• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A sampling device (1) for providing a particle sample from a gas stream in a channel. The device (1) is configured to be inserted into the channel through an opening (140) therein. The device (1) comprises a shaft (2) which has an inner tube (8) and an outer tube (7). The outer tube (7) is rotatable around the inner tube (8). The device further comprises a transition chamber (3), a rotatable portion (4) and one or more extraction pipes (5) The extraction pipes are attached to and extending in a substantial radial direction from the rotatable portion (4). The extraction pipes (5) comprises one or more sampling nozzles (6). The rotatable portion (4) and outer tube (7) comprises gear parts (9,10) adapted for meshing engagement. The device (1) further comprising a housing (100) adapted to accommodate the gear parts (9,10) of the rotatable portion (4) and the outer tube (7).
    公开号:DK201870808A1
    申请号:DKP201870808
    申请日:2018-12-11
    公开日:2020-07-09
    发明作者:Wedell Anders
    申请人:Mark & Wedell As；
    IPC主号:
    专利说明:

    Protective housing for angular gear and sampling device comprising said protective housing
    Background
    The present invention relates to a device for providing a particle sample, typically coal dust, from a gas stream in a vertical pipe in accordance with Danish standard DS/ISO 9931. To obtain such a sample a suitable device comprises a rotatable probe which obtains uniform samples by rotating nozzles located on the rotatable probe in one full circle. The sample retrieved in accordance with DS/ISO 9931 is an isokinetic sample, meaning that the flow velocity used to retrieve a dust sample in the probe is equal to the flow velocity in the channel. The amount of dust retrieved from the channel is therefore an indication of the dust transported in the channel and can be used to increase or lower the flow of dust to a determined optimum.
    Optimization of the flow of fuel dust into a combustion chamber has great economic and environmental impact. An excessive supply of fuel is not only an undesirable expense, but may also result in an unbalanced air/fuel ratio and therefore increased production of pollutants.
    Such a device is known by the prior art from EP1009990 B1. The particular device comprises a shaft and a probe head located on the distal end of the shaft. The shaft has an inner tube of a size suitable for transporting the required amount of dust sample from the probe head to an analysis apparatus coupled to the device. The probe head rotates by means of an angular gear. The device is fixed to the exterior of a channel and the probe head is inserted and withdrawn to/from the interior of the channel through an opening in the channel. A two parted cover is mounted on the distal end of the shaft near the probe head so that when the probe head is withdrawn from the interior, the cover aligns with the internal channel wall and seals the opening.
    A further development of the device is known from WO2004/081539 which provides an automatic system for surveillance of coal dust supply. The device is coupled to a suction channel and a weighing and measuring unit. This unit generates a data signal to control the flow (suction) in the conveyer tube
    DK 2018 70808 A1 and thereby the withdrawal of samples. This device comprises a so called “dustless” connection, easily allowing the device to be mounted and dismounted to/from the channel and inserted through an opening therein. The “dustless” connection utilizes pressurized air to maintain dust inside the channel when the connector is open.
    The opening in the “dustless” connection is only slightly larger than the probe head. This has the effect that the probe may pass, while the pressurized air effectively provides an overpressure in the entire opening so that no dust enters the opening.
    The device further comprises a screen plate which screen plate has a surface perpendicular to the flow of the flowing channel. The screen plate is located on the downstream side of the probe and therefore protects the probe against wear caused by colliding coal dust particles, when the probe is in its inactive position.
    Since the screen plate is relatively thin and has a width smaller than the diameter of the opening in the dustless connection, it may pass in and out of the channel through the opening therein.
    It takes approx. 8 min to obtain a representative sample after which the probe is removed from the channel in order not to be worn out by the colliding coal dust particles.
    There is, however, a desire to obtain continuous samples or at least samples for much longer sampling periods, in order to surveil the fuel feed flow. The use of the prior art devices for such long sampling periods would cause damage to the probe and dust clogging the moving parts.
    There is therefore a need for a sampling device with improved durability and reliability. Simultaneously, the improved device must be able to engage and fit through the dimensions of existing “dustless” connectors, since changing existing dustless connectors would provide a large expense, rendering the use of a new sampling device profitable.
    Summary of invention
    It is the object of the invention to provide an improved particle sampling
    DK 2018 70808 A1 device which fits to existing equipment, e.g. “dust-less connectors” and which has improved durability so that it may obtain samples during longer sampling periods without being damaged by the flow of particles. Thus, according to a first aspect of the invention, this and other objects is achieved with a device comprising:
    a shaft having a proximal end and a distal end, the shaft comprising an inner tube and an outer tube, said inner and outer tube being coaxially fixed in respect to each other and said outer tube being rotatable around the inner tube;
    a transition chamber located at the distal end of the shaft and fluidly connected to the inner tube;
    a rotatable portion translationally fixed to the transition chamber and being rotatable around a first rotation axis, said first rotation axis is perpendicular to the shaft; said rotatable portion further comprising one or more extraction pipes, attached to and extending in a radial direction from the rotatable portion, said extraction pipes being in fluid communication with the transition chamber and comprising a plurality of sampling nozzles located at a radial distance from the rotatable portion;
    wherein said rotatable portion and outer tube comprise gear parts adapted for mutually meshing engagement thereby forming an angular gear and wherein the device further comprises a housing adapted to house the said angular gear while allowing rotation of the outer tube and the rotatable portion.
    When the sampling device is arranged for intended use in a vertical flowing channel, i.e. the nozzles are facing down towards the direction of dust flow, the first rotation axis should be substantially vertical.
    It has surprisingly been found by the inventors that it is possible to mount a housing according to the invention around the angular gear of the sampling device, while still allowing it to be inserted through an opening in the flowing channel without any modifications to the size of the opening, and without reducing the dimensions and hence strength of the movable parts. This is
    DK 2018 70808 A1 also the case when a dustless connector is coupled to the opening.
    The housing effectively isolates the gear parts both in the rotatable portion and in the outer tube. This ensures that dust particles from the channel cannot damage or clog the angular gear. The housing is designed with an internal geometry so it fits tight around a portion of the rotating parts, i.e. the rotatable portion and the outer tube, and the non-rotating parts, i.e. the transition chamber. This has the benefit that the gear parts are more securely engaged and therefore the angular velocity ratio between two gear parts remains constant throughout the entire mesh. The probe is thereby rotated as intended, and a more reliable sampling device is thereby provided. Additionally, a controlled rotation of the probe ensures that the probe fully rotates to its inactive position after a sample, so that it can be retrieved from the channel without any difficulty.
    The term probe refers to the parts of the sampling device located at the distal end of the shaft and includes the transition chamber, the rotatable portion, the extraction pipes and the nozzles. When the housing accommodates the transition chamber and the angular gear the housing also forms part of the probe. This is the portion of the sampling device with the largest dimensions, which enters the channel through the opening.
    The opening in the flowing channel is typically a circular through hole which is adapted to the size of the probe. On the outside of the channel a sealing mechanism (dustless connection) covers the opening and allows the probe to enter through the hole without any release of particle from the channel. Since the probe including the housing may fit into the existing opening adapted for a probe without a housing the cost of replacing the dustless connection can be saved. In a preferred embodiment a gasket is located between the housing and the rotatable portion and/or the outer tube.
    By having a gasket such as a packing or an O-ring between the rotatable portion and the outer tube, the internal of the housing is sealed.
    The housing thereby advantageously allows for lubrication of the angular gear. Since the housing houses and isolates the gear parts from the surrounding dust particles in the channel, the risk of getting dust stuck in the oil
    DK 2018 70808 A1 and clocking the angular gear is reduced. Similarly, the friction in the angular gear is reduced resulting in a smoother rotation.
    In a preferred embodiment the housing is adapted for being disassembled. This ensures that a mounted housing can be detached from the probe if the gear parts e.g. needs to be cleaned or lubricated. The housing may then be re-assembled around the angular gear. In a preferred embodiment this is achieved by a housing comprising at least two housing elements comprising mutually corresponding surfaces. The housing may additionally comprise different types of joining means such as a hole with internal thread and a corresponding screw or bolt
    The mutually corresponding surfaces may have profiles which ensure that the housing only can be assembled in the correct way. When the surfaces engage, it also ensures a tighter fit. When the mutually corresponding surfaces of the at least two housing elements are engaged as intended, the joining means may be applied to join the at least two housing elements together. It should be noted that the joining means only join the housing elements together, they are not fastened to any parts inside og outside of the housing.
    In a preferred embodiment, the housing comprises a first housing element, a second housing element, joining means and preferably a gasket, said housing is adapted for being disassembled. It should be noted that the gasket is an optional additional protection of the gear parts, and there may be situations where it may not be necessary and can be omitted.
    By having a housing composed of two housing elements a housing is provided which is easy to assemble and which requires few joining means. Since it is a requirement that the housing is compact and may pass through the small opening in the flow channel, as few joining means as possible are desired since they take up large space. This is because e.g. the screw heads will protrude on at least one surface of the first housing element, and require a threaded hole in the second housing element (or vice versa) in order to be screwed into place. To reliably keep the housing in place the joining means needs to be placed in areas of certain thickness.
    The size of the channel opening i.e. in the dustless connector, was
    DK 2018 70808 A1 adapted for a probe without a housing. It was therefore previously believed that it was impossible to provide a housing which could protect the angular gear and still enter through the opening. A housing which is adapted for being disassembled and which includes joining means was even more impossible since the acquired additional space. However, the inventers realized that the size of the channel opening determines the maximum width and height of the housing. However, the length may be adjusted as desired to create space for the joining means.
    When the housing is arranged for normal use the length of the housing is defined as the direction from the proximal end of the shaft to the distal end of the shaft. The height is defined as the direction of the first axis
    In a preferred embodiment, the housing has a length which is longer than the length of the rotatable portion.
    Preferably at last one attachment means is at least partially located in the housing more distal than the transition chamber and/or rotatable portion.
    The housing may be further elongated towards to proximal end or the distal end.
    In a preferred embodiment, the joining means are located at least partially on the proximal side of the transition chamber, or on the distal side of the transition chamber.
    Preferably at least one set of joining means are located at least partially on the proximal side of the transition chamber and at least one set of joining means are at least partially located on the distal side of the transition chamber.
    In a preferred embodiment, the housing, when it is in an assembled state, comprises two openings. The two openings are for accommodating a portion of the shaft and the rotatable portion, respectively. The dimensions of each opening are adapted for tight enclosure of the portion of the shaft and the rotatable portion, respectively.
    Typically, the ratio between the gear part of the outer tube and the gear part of the rotatable portion is 1:2. In such cases the ratio between the two openings may similarly be around 1:2.
    DK 2018 70808 A1
    The two openings are both connected to an enclosure in the housing which accommodates the angular gear.
    In a preferred embodiment, the first opening is located in the first housing element and arranged to accommodate a portion of the rotatable portion, and the second opening being comprised of two semi-circular cut-outs in each of the first and second housing elements, said second opening arranged to accommodate a portion of the shaft.
    When at least one opening is formed by several different housing elements, it is much easier to mount the housing on the sampling device, without having to disassemble the entire sampling device.
    The lower surface of the housing, i.e. which is faced downwards during intended use, is exposed to a large flow of small particles during sampling. It is therefore preferred that this opening is a single cut-out whereby connections between several housing elements are avoided in this surface.
    This bottom housing element provides a base for mounting one or more additional housing elements on top. It additionally provides space for threaded holes and thereby allow the corresponding joining means to be attached thereto, in a direction perpendicular to the bottom surface, i.e. in a direction parallel to the first rotation axis. This particular design allows for a compact housing design.
    In a preferred embodiment, at least one of the housing element has a substantially semi-circular cross section, when seen from an end view. By end view is meant from a direction going from the proximal end of the shaft to the distal end of the shaft, or vice versa.
    This design provides at least one housing element which is adapted to the circular shape of the opening. It thereby functions as guiding means when the probe is inserted into the opening of the channel. Typically, the opening is around 39 mm, but may also be larger, depending on the type of particle sample to be retrieved.
    For instance, the extraction pipes and nozzles may be larger when a particle sample of wood chips or pulverized wood is sampled. In such cases the opening may be e.g. 46 mm.
    DK 2018 70808 A1
    In a preferred embodiment the housing is made of metal, such as aluminum, stainless steel or hardened steel. Depending of the type of particles to be sampled, and the temperature inside of the channel, the housing may alternatively be made out of a polymer such as polyethylene, since polyethylene during some conditions, have shown desired properties with regards to low erosion.
    In a preferred embodiment, the rotation portion comprises an annular recess for receiving a gasket, and a gasket accommodated in said recess. Preferably the recess is located between the gear part of the rotatable portion and the extraction pipes. Alternatively, the annular recess and the gasket could be comprised in a housing element.
    In another aspect the invention relates to a protective housing suitable for accommodating an angular gear, said housing comprising at least one housing element, at least a first opening and second opening located in said at least one housing element, said first opening being arranged to accommodate a portion of a first rotating member, said second opening being arranged to accommodate a portion of a second rotating member, the first opening and second opening being located in two different planes perpendicular to each other, thereby allowing said first and second rotating member to rotate around a first and second axes, said first and second axes thereby being perpendicular to each other, wherein the housing is adapted for housing said angular gear and at least one non-rotating member, and said housing comprises a recess inside the at least one housing element to engage to the at least one non-rotating member whereby the housing is rotatably fixed without being connected to any parts located outside the housing.
    The protective housing provides means for protecting the angular
    DK 2018 70808 A1 gears of existing sampling devices, by retrofitting the housing to existing equipment. In particular the protecting housing may be retrofitted onto sampling devices for obtaining samples according to standard ISO 9931.
    By the wording “without being connected to any parts located outside the housing” is meant that the housing is not supported by any elements not fully or partially accommodated in the housing.
    The first and second rotating members may circular or cylindrical elements which rotates along their circumferential and which allow for an internal flow of fluid, such as the rotatable portion and the outer tube. The non-rotating member may be the transition chamber. In preferred embodiment the protective housing is composed of a first housing element, a second housing element, joining means and preferably a gasket, and is adapted for being disassembled. This allows for easy retrofitting onto existing equipment.
    A recess in at least one of the housing elements is adapted for engagement with the non-rotating member, i.e. the transition chamber. The other housing member(s) are then joined thereto by the joining means.
    In this way the housing is engaged with non-rotating parts but not fastened thereto.
    In a preferred embodiment the housing fits inside a circular channel of Ø 39 mm. This ensures that the housing fits inside existing channel openings.
    Brief Description of Drawings
    In the following description embodiments of the invention will be described with reference to the schematic drawings, in which
    Fig. 1 is a perspective view of a sampling device without a housing according to one embodiment of the invention;
    Fig. 2 is a perspective view of a sampling device comprising a protective housing according to one embodiment of the invention;
    Fig. 3 is an exploded view of a sampling device comprising a protective housing according to one embodiment of the invention;
    Fig. 4 is a perspective view of a protective housing according to one embodiment of the invention;
    DK 2018 70808 A1
    Fig. 5 is a perspective view of a protective housing according to one embodiment of the invention, seen from another angle;
    Fig. 6 shows a section of the housing of Fig. 4 seen from a top view;
    Fig. 7 shows a section of the housing of Fig. 4 seen from a proximal side;
    Fig. 8 shows a section of the housing of Fig. 4 seen from a different side view;
    Fig. 9 shows the cross section B-B of the housing of Fig. 8; and
    Fig. 10 shows the cross section C-C of the housing of Fig. 8.
    Detailed description
    Referring initially to Fig. 1, a general configuration of a sampling device 1 for providing a particle sample from a gas stream, in the form of a so called Pulverized Fuel Sampler (PFS), is shown. The sampling device 1 comprises a shaft 2, a transition chamber 3, a rotatable portion 4, said rotatable portion 4 having four extraction pipes 5 which in one end are fluidly connected to the transition chamber 3.
    The extraction pipes 5 are extending in a radial direction from the rotatable portion 4. In the other end, each of the extraction pipes 5 comprises sampling nozzles 6. The nozzles 6 are located at different radial distances from the center of the rotation portion 4 so that samples are obtained at four different distances from the center of a flowing channel (not shown). The number of extraction pipes 5 and number of nozzles 6 could in an alternative be adjusted for different applications.
    The shaft 2 comprises an outer tube 7 and an inner tube 8, cf. Fig. 3. The outer tube 7 comprises a gear part 9, such as a pinion. The rotatable portion 4 comprises a gear part 10, such as a crown wheel. The gear parts 9 and 10 form an angular gear 11. The inner tube 8 is fixed to the transition chamber 3. The inner tube 8 and the transition chamber 3 are fluidly connected so that sample material may flow from the flowing channel into the sampling nozzles 6 through the extraction pipes 5, the transition chamber 3 and through the inner tube 8 and further to an analyser apparatus coupled thereto (not shown). The
    DK 2018 70808 A1 outer tube 7 may rotate around the inner tube 8. The rotatable portion 4 is rotatable around the transition chamber 3. By means of the angular gear 11 a rotation of the outer tube 7 will cause the rotatable portion 4 to rotate.
    Turning now to Fig. 2, a general configuration of a sampling device 1 comprising a housing 100 according to one embodiment of the invention is shown. The housing 100 is attached to the sampling device 1 to house the angular gear 11. The housing 100 allows for protection of the angular gear 11, while allowing rotation of the outer tube 7, rotatable portion 4 and the extraction pipes 5. The extraction pipes 5 are in Fig. 2 shown in their passive position, which allows the extraction pipes 5 to enter through an opening 140 of a vertical channel (not shown). The housing 100 is composed of a first housing element 101 and a second housing element 102. The first housing element 101 and the second housing element 102 are attached to each other by joining means in the form of screws 110. The housing 100 is by means of the joining means adapted for being disassembled. Therefore, the housing 100 may be retrofitted onto existing sampling devices 1.
    Turning now to Fig. 3, an exploded view of a sampling device 1 comprising a housing 100 according to one embodiment of the invention is shown.
    During mounting (or retrofitting) of an assembled housing 100, to a sampling device 1, the screws 110 are unscrewed from the screw holes 111, whereby the first housing element 101 and the second housing element 102 may be taken apart. The rotatable portion 4 including the extraction pipes 5 and nozzles 6 is removed from the transition chamber 3 by unscrewing a bottom screw 150. The inner tube 8 and the transition chamber 3 are then placed in the first housing element 101. A ring gasket 151 is placed in the annular recess 152 of the rotatable portion 4. The rotatable portion 4 is thereafter re-attached to the transition chamber 3 through a first opening 201 in the first housing element 101, and rotatably fastened by means of the bottom screw 150. The first opening 201 is a through hole, which has a geometry adapted for accommodating a part of the rotatable portion 4 and a portion of the transition chamber 3. In the proximal end of the first housing element 101 the first housing element 101 has a semi-circular cut-out 205. The semi-circular cut-out 205 comprises
    DK 2018 70808 A1 an annular recess 153 arranged for accommodating a ring gasket 154. During assembling, the transition chamber 3, is placed in the first housing element 101 so that the inner tube 8 is located in the semi-circular cut-out 205. The second housing element 102 comprises a corresponding semi-circular cut-out 206, which together with the semi-circular cut-out 205 forms a circular second opening 202 for accommodating a portion the shaft 2.
    The first opening 201 and second opening 202 are located in two different planes perpendicular to each other in the form of the proximal side of the housing 100 and the bottom side of the housing 100. Thereby the housing 100 is adapted for housing an angular gear 11, in which the rotating members, i.e. the outer tube 7 and the rotatable portion 4 rotates around two perpendicular axes.
    The first and second openings 201,202 are of a size corresponding to the rotatable member 4 and the outer tube 7. The gaskets 151 and 154 ensure a tight seal of the enclosure of the housing 100 and allows the rotatable portion 4 and outer tube 7 to rotate during use.
    It is shown that the inner tube 7 and the outer tube 8 are coaxially fixed in respect to each other, and that the outer tube 7 may be moved translationally towards the proximal end of the device 1. Once the gear parts 9 and 10 are brought into meshing engagement, by moving the gear part 9 of the outer tube 7 towards the transition chamber 3, the second housing element 102 may be placed onto the first housing element 101. This locks the angular gear 11 into place.
    The second housing element 102 has an internal recess adapted for the accommodating and engaging with the non-rotating transition chamber 3 and a portion of the shaft. By engaging the internal recess with the non-rotating transition chamber 3, the housing 100 is rotatably fixed without being connected to any parts located outside of the housing 100.
    Turning now to Fig. 4 to 9, a protective housing according to one embodiment of the invention is shown in greater detail. The housing 100 comprises a first housing element 101 and a second housing element 102. The first
    DK 2018 70808 A1 housing element 101 comprises an opening 201 for accommodating the rotatable portion 4. The first housing element 101 and the second housing element 102 comprises a semi-circular cut out 205, 206. When the housing 100 is in an assembled state the semi-circular cut outs 205, 205, together form a circular second opening 202 for accommodating a portion of the shaft 2. The diameter of the second opening is substantially the diameter of the outer tube 8, so that the second opening 105 may enclose the outer tube 8.
    The first opening 201 and second opening 202 are connected form a cavity inside the housing 100.
    Near the bottom of the first opening 201 the opening is larger than near the top. This is because the lower portion of the opening 210 is adapted for accommodating a portion of the rotatable portion 4, while the upper portion 211 is adapted for accommodating a portion of the transition chamber 3.
    The upper surface of the first housing element 101 and the lower surface of the second housing element 102 has mutually corresponding surfaces. They have profiles which are engaged when assembled, such that the housing 100 only may be assembled in the correct way. When the surfaces engage, it also ensures a tighter fit.
    Turning to Fig. 8 in which the housing 100 is shown from a cross sectional side view. It is shown that the housing 100 is extended further than the lower portion of the opening 210. By extending the length of the housing 100, room is provided for the joining means 110.
    This is in detail shown in Fig. 6. The joining means are at least partially located towards the distal end and proximal end than the enclosure for the transition chamber 3.
    The housing 100 is shown from the distal side in Fig. 7. The second housing element 102 has a substantially semi-circular cross section which ensures that the housing 100 may pass through a circular opening 140 of Ø 39 mm. This is shown in more detail in Fig. 9 and Fig. 10 in which a circular opening 140 is shown. The shape of the housing element 102 serves as a guide when the housing is to be entered or withdrawn through the opening 140. When the circumference of the second housing element 102 abuts the inner edge of
    DK 2018 70808 A1 the opening 140, the housing 100 may be pushed or pulled to easily slide it through the opening 140.
    权利要求:
    Claims (10)
    [1] PATENT CLAIMS
    1. A sampling device (1) for providing a particle sample from a gas stream in a channel, said device (1) being configured to be inserted into said channel through an opening (140) therein, the device (1) comprising:
    a shaft (2) having a proximal end and a distal end the shaft (2) comprising an inner tube (8) and an outer tube (7) said inner and outer tube (8,7) being coaxially fixed in respect to each other and said outer tube (7) being rotatable around the inner tube (8);
    a transition chamber (3) located at the distal end of the shaft (2) and fluidly connected to the inner tube (8);
    a rotatable portion (4) translationally fixed to the transition chamber (3) and being rotatable around a first rotation axis, said first rotation axis is perpendicular to the shaft (2); said rotatable portion (4) further comprising one or more extraction pipes (5), attached to and extending in a substantial radial direction from the rotatable portion (4), said extraction pipes (5) being in fluid communication with the transition chamber (3) and comprising one or more sampling nozzles (6) located at a radial distance from the rotatable portion (4);
    wherein said rotatable portion (4) and outer tube (7) comprising gear parts (9,10) adapted for meshing engagement and wherein the device (1) further comprising a housing (100) adapted to accommodate the gear parts (9,10) of the rotatable portion (4) and the outer tube (7) while allowing rotation of the outer tube (7) and the rotatable portion (4).
    [2] 2. The sampling device according to claim 1, characterized in that the housing comprises a first housing element, a second housing element one or more gaskets and joining means and is adapted for being disassembled.
    [3] 3. The sampling device according to any previous claim, characterized in that the first and second housing elements comprises mutually corresponding surfaces.
    DK 2018 70808 A1
    [4] 4. The sampling device according to any previous claim, characterized in that the housing in an assembled state comprises two openings.
    [5] 5. The sampling device according to claim 4, wherein the first opening being located in the first housing element is arranged to accommodate a portion of the rotatable portion, the second opening being comprised of two semi-circular cut-outs in the first and second housing elements, said second opening arranged to accommodate a portion of the shaft.
    [6] 6. Sampling device according to any previous claim, characterized in that at least one of the housing elements has a substantially semi-circular cross section.
    [7] 7. Sampling device according to any previous claim, characterized in that the housing is if of hardened steel.
    [8] 8. A protective housing suitable for accommodating an angular gear, said housing comprising at least one housing element, at least a first opening and second opening located in said at least one housing element, said first opening being arranged to accommodate a portion of a first rotating member, said second opening being arranged to accommodate a portion of a second rotating member, the first opening and second opening being located in two different planes perpendicular to each other, thereby allowing said first and second rotating member to rotate around a first and second axis, said first and second axes thereby being perpendicular to each other, wherein the housing is adapted for housing said angular gear and at least one non-rotating member, and said housing comprises a recess inside the at least one housing element to engage to the at least one non-rotating member whereby the housing
    DK 2018 70808 A1 is rotatably fixed without being connected to any parts located outside the housing.
    [9] 9. Protective housing according to claim 9, characterized in that the
    5 housing comprises of a first housing element, a second housing element, one or more gaskets and joining means and is adapted for being disassembled.
    [10] 10. Protective housing according to claim 9 or 10, characterized in that the housing fits inside a circular channel of Ø 39 mm.
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    同族专利:
    公开号 | 公开日
    DK180172B1|2020-07-14|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2020-07-09| PAT| Application published|Effective date: 20200612 |
    2020-07-14| PME| Patent granted|Effective date: 20200714 |
    2021-07-23| PBP| Patent lapsed|Effective date: 20181211 |
    优先权:
    申请号 | 申请日 | 专利标题
    DKPA201870808A|DK180172B1|2018-12-11|2018-12-11|Protective housing for angular gear and sampling device comprising said protective housing|DKPA201870808A| DK180172B1|2018-12-11|2018-12-11|Protective housing for angular gear and sampling device comprising said protective housing|
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