• 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:
    Mixing machine comprising at least one container arranged with a device for mixing raw materials, molding mix, prefabricated materials and more. for a finished product in which the container has an opening for receiving raw materials and an opening for guiding the finished product out of the container of the forced mixer, where the forced mixer is provided with at least one of the openings a safety lock preventing persons from coming into contact with the moving parts of the forced mixer.
    公开号:DK201300378A1
    申请号:DK201300378
    申请日:2013-06-19
    公开日:2015-01-12
    发明作者:Tommy Bredal
    申请人:Staring Maskinfabrik As；
    IPC主号:
    专利说明:

    Mixer. The present invention relates to a safety device for a mixing machine. The invention further relates to a mixing machine, such as a forced mixer, a flow mixer, a counter flow mixer and the like. with the safety device fitted. The invention further relates to a method for retrofitting a safety device according to the invention to a mixing machine.
    Mixing machines are characterized by comprising a container provided with a device for forcibly mixing raw materials into a finished product, the container having an opening for receiving raw materials, and an opening for guiding the finished product out of the composite mixer container.
    For an explanation of the invention, without limiting this in any way to the scope of application of the application, as an example, forced mixers are used for the manufacture of concrete and building mortar. Concrete and mortar are made from solid raw materials, such as sand, gravel, cement, water and more. and mix to an appropriate consistency in the compulsive mixer. Mixers, including forced mixers and other types of mixers, are also used in the industry for a variety of purposes, for example in the manufacture of food and medicine. Mixers are also used in the chemical industry, for example in the manufacture of paints.
    Forced mixers for making concrete and building mortar are available in several variants and sizes. Thus, a composite mixer may be a stationary plant adapted to process large quantities of raw materials in the manufacture of concrete or mortar. In addition, there are also mobile plants that enable the practical and demand-controlled production of concrete or mortar directly on the construction site. For an example of such a mobile plant in the form of a compulsory mixer, please refer to DK 2006 00321 U3, Staring Maskinfabrik A / S. Handling raw materials and the finished product is hard physical work that is stressful for the staff who operate the composite mixer and carry out the construction work. Therefore, the working environment rules on construction sites are constantly changing towards the manual work being taken over by machines. For example, conveyor belts, lifting boxes and the like are used. for lifting the raw materials into the forced mixer so that the handling of raw materials with hand blades is relieved. Similarly, the finished product is received in tubs, however, most often by wheel bearings which, depending on size, may be motorized.
    Great effort must be made to force the raw materials into the finished product into the finished product. Therefore, there are also high requirements for personal safety to prevent people from coming into contact with the moving parts of the mixer.
    The authorities therefore stipulate that the inlet of the forced mixer, which is arranged to receive raw materials into the container, must be protected with a grille to ensure that persons cannot come into contact with the moving parts. This grid must be designed in accordance with standard EN 12151: 2007.
    Further, it is a requirement that the outlet of the mixer, for extracting the finished product, is provided with a grille which ensures that persons are prevented from coming into contact with the moving parts of the forced mixer. This must also be in accordance with EN 12151: 2007.
    Do not ignore personal safety at work. However, the statutory grids cause a major disadvantage to the construction workers, as the raw materials tend to stop the grating. It is therefore necessary to continuously remove the build-up of material on the grid. This causes some manual labor and irritation. The problem is of course greater when the raw materials include cement or other that can harden or solidify and build up a layer on the grating that is difficult to remove. The problem appears both on the grid in the inlet and on the grid in the outlet. The moment of annoyance is so great that the construction workers, in frustration, either remove the protective cover with the grille or make a hole in it, after which the forced mixer is no longer legal and can cause personal injury.
    Of course, if a conveyor belt, lift box or the like is used to handle raw materials into the forced mixer, the problem is of course no less, since the raw materials are supplied in a continuous stream, and persist on the same area of the grid. If the construction workers frustrate a hole in the grid where the raw materials are delivered or the finished product is taken out, this is obviously an illegal act that can have safety consequences. Depending on the positioning of the conveyor belt relative to the inlet, there will be an opening where persons will be able to come into contact with the movable mixer parts. The conveyor belt must also be attached to the place where the hole is cut. At the same time, clearance between conveyor belt and grate must meet the requirements set by the aforementioned standard, which in practice means that the outlined problem remains unsolved as the grate still prevents the passage of raw materials into the mixer. Furthermore, the mixer must be equipped with a safety switch that functions to remove the belt, the mixer motor will immediately stop.
    Therefore, it is necessary to provide a solution to the outlined problem that the openings for the inlet and outlet of the forced mixer are clogged by raw materials and finished product respectively, without compromising the high requirements for personal safety.
    This is provided by the invention by designing a safety device as described in claim 1, wherein the safety device, in the form of a safety lock, is adapted for mounting on an inlet opening and / or an outlet opening on a mixing machine, wherein the passage through the security lock is dimensioned in such a way that material can pass, for example in portions, but that it is prevented that persons, through the security lock, can come into contact with parts located on the other side of the security lock, for example the moving parts of the mixer .
    By providing the mixer with the safety lock, a safety cut can be allowed to be made in the protective lid in which the safety lock is mounted. In one embodiment, the security lock comprises a housing with a first opening acting as an inlet and a second opening serving as an outlet, wherein the housing is provided with at least two lock gates configured such that the lock gates regulate the size of the opening through the security lock.
    Thus, depending on the configuration of the lock gates, it is possible to provide a solution that closes for a safety-critical opening all the way through the security lock, although material can fill the lock very well and pass from the opening, which acts as an inlet to the opening, that acts as an outlet. It is a given that the design must take into account the design of the structure so that the gravitational forces help to move the material through the safety lock. In one embodiment, the lock gates are configured to form at least two lock chambers, which means that when one lock chamber is connected to the opening in the cabinet which acts as an outlet, another lock chamber is connected to the opening in the cabinet which acts as an inlet. Thus, there will be no direct connection through the sluice, and the weight of the material admitted to the security sluice through the opening acting as an inlet will thus help to empty the sluice chamber connected to the opening in the housing which acts as an outlet. In yet another embodiment, the security lock comprises a drum. Furthermore, the drum is suspended in the cabinet rotatable about its axis, in a bearing, formed in the housing in such a way that the bearing in the housing and the bearing counterpart in the drum together form the bearing.
    The bearing, formed in the housing, is in one embodiment configured as a through shaft, alternatively two shaft pins, wherein the bearing counterpart formed on the drum is a through tube, or two bushings, or tube pins configured to form counterpart to the bearing. in the cabinet. In a further embodiment, the bearing, formed in the housing, is a bearing in the form of a bushing, for example, formed with a ball bearing, or two pipe pins, where the bearing counterpart formed on the drum is a through shaft, or two shaft pins configured for to form a counterpart to the enclosure designed in the cabinet. In one embodiment, the drum is provided with at least two slats acting as sluice gates between the opening acting as an inlet and the opening acting as an outlet. In the case of a drum, the sluice chamber can be described as the space between the housing enclosing the drum and the diameter of the drum limited in extent by the distance between the slats. Thus, material can be transferred in portions between the inlet and the outlet without being able to access persons all the way through the lock.
    It is understood that the slats are formed on, or attached to, the drum so that they project radially from the drum relative to the axis of rotation of the drum. Hereby they can describe lock chambers by closing off a volume, moving the drum around the axis of rotation. In order to effectively close the lock chamber and avoid compromising the safety distance between a person and the moving parts, it would be appropriate if the cabinet is adapted to the shape of the drum with slats so that the inside diameter of the cabinet matches the diameter of the drum. Similarly, it will be appropriate if the center of the diameter of the cabinet, like the drum, is the shaft on which the drum is rotatably suspended. In one embodiment, the slats are formed or secured to the drum so that they describe the same angle of rotation over the entire length of the drum's suspension or rotation axis. This opens and closes the slats over the entire length at the same time. In another embodiment, the slats are formed, or secured to the drum, such that they describe a screw relative to the length of the drum's suspension axis. Thus, the auger can range from being greater than zero degrees across the length of the axis to describing multiple turns (x times 360 degrees), perhaps as much as 50 turns around the axis, depending on its length, which may help to provide an efficient passage of materials through the security lock.
    In order to achieve a simple construction, in one embodiment, the safety lock drum is formed with slats which are a fixed and non-replaceable part of the drum. The slats described herein may be designed in their full extent, but may also in another embodiment be intended to be extended by a replaceable slat.
    To facilitate this, in another embodiment, the safety lock drum is provided with an adapter for attaching loose interchangeable slats to the drum. The adapter can itself be part of a slat.
    Depending on the use of the mixer and the desired properties of the blades in connection with cleaning ease, prevention of build-up of material on the blades, etc. For example, the slats may be wholly or partially made of at least one of the materials: plastic, teflon, rubber or metal, stainless steel, aluminum.
    For example, for use of a compulsive mixer in the pharmaceutical or food industry, it would be desirable to be able to design the entire composite mixer, including the safety lock, in acid-resistant stainless steel with the cleaning benefits it brings. For a composite mixer for concrete, or mortar manufacture, a slab incorporating flexible materials, such as rubber, will be particularly suitable as it is durable, and resistant to mechanical impact from hard gravel fractions, etc.
    The slats may additionally be provided with a gasket, a scraper, or a broom to help keep the sluice clean and functional.
    The safety lock according to the invention is applicable to both new and existing mixers of various makes. For example, an existing mixer can be brought into compliance with existing legislation by replacing the protective cap with a cap with the statutory grid pattern, in which a suitable cut is made to allow the safety lock to be mounted and where the safety lock is mounted.
    The security lock is further arranged so that the opening, which is intended to act as an inlet for raw materials for the manufacture of a finished product, can receive raw materials thrown in, such as when delivered with a hand operated bucket.
    The security lock is also designed to, and suitable for, receiving raw materials delivered to the opening with a conveyor belt, without the constant flow of material leading to stopping the security lock as the material is effectively passed through the security lock. The same will apply where the inlet of the security lock receives raw materials delivered from a lift box arranged to lift raw materials up to the opening of the security lock. It is noted that with the mounting of the safety lock, all safety requirements for fixing a conveyor belt outlet to the inlet on the mixer lapse, as the safety distance for persons is no longer critical. In a particular embodiment, the safety lock is adapted to be mounted under the discharge flap of the mixer, thereby removing the grating and clogging and avoiding irritation. In another aspect of the invention, which has a background in a mixing machine, for example a forced mixer, a flow mixer, a counter flow mixer and the like, the mixing machine comprises a container arranged with a device for forced mixing raw materials into a finished product, where the container has an aperture for receiving raw materials and an aperture for passing the finished product out of the forced mixer container where the mixing machine is further provided on at least one of the apertures, and most often on both, with the safety device as described which prevents persons from entering contact with the movable mixer parts.
    The invention also includes a method of retrofitting a safety device on the inlet of a mixing machine comprising:
    A first step wherein an opening for receiving the security device according to the invention is made in the security grate or lid, alternatively, the existing security grating or lid is removed and replaced with a lid in which an opening for receiving the security device according to the invention is made, and another step in which the safety device according to the invention is mounted, either when the safety grate or lid is mounted on the mixer or before it is mounted on the mixer, after which the mixer is ready for use and meets the applicable regulatory requirements.
    The invention also includes a method for retrofitting a safety device on the outlet of a mixing machine comprising: a first step of removing the safety grate under the discharge flap, and a second step of mounting the safety device according to the invention over the opening under the discharge flap, after which the mixing machine is ready for use and meets the applicable regulatory requirements.
    An exemplary embodiment of the forced mixer according to the invention will be described in the following with reference to the accompanying drawing, in which:
    FIG. 1 shows a forced mixer with a safety lock,
    FIG. 2 shows a cross section of a forced mixer; FIG. 3 shows the housing of the safety lock; FIG. 4 shows the security lock separately; FIG. 5 is a cross-sectional view of the security lock; FIG. 6 shows the drum for the safety lock separately, together with the shaft for hanging the drum in the cabinet.
    The FIG. 1, the forced mixer container 2, arranged to receive the raw materials, either through the grate constituting the protective lid 3, or through the security lock 4. The forced mixer 1, which is shown to be transportable and provided with wheels 5, and a supporting foot 6, and a drawbar 7. The finished product is withdrawn at the bottom of the container 2 from a discharge flap (not shown), and thus can be guided directly into a wheelbase for application to the place of use. Conveniently, the discharge flap is also provided with a safety lock 8, which is specially adapted to be mounted thereon.
    Furthermore, as shown in FIG. 2 is provided with a movable device 9 which mixes the raw materials and prepares the finished product.
    FIG. 3 shows the security lock 4.8 in perspective. The enclosure for the security lock 4,8 is prepared for mounting in the protective cover 3, by means of the mounting holes 10, in the foot of the enclosure and is effectively mounted with an appropriate bolt connection. When the safety lock 4 is mounted in the protective cover 3, through the cutout made, the housing rests on the protective cover 3.
    As shown in FIG. 4, showing the safety lock separately, a drum 11 is suspended freely rotatable on a shaft 12, secured in two passages 13,14 performed on the side pieces 15,16. The drum 11 is provided with slats 17, and the two shields 18, 19 are adapted to precisely enclose the slats 17.
    FIG. 5 shows a cross-section of the security lock 4, showing that the slats 17 mutually describe locking chambers 20, the distance here being dimensioned so that a locking chamber 20 is first opened for delivery of its contents into the opening 21, which acts as output when the locking chamber 20 is closed to receive input from aperture 22 which acts as input. This ensures that persons cannot come into direct contact with the moving parts which are in the compartment mixer container 2.
    FIG. 5 shows the drum 11 for the security lock 4, separated together with the shaft 12, for hanging the drum 11 in the cabinet for the security lock 4.8. From this it can be seen that the drum 11 is composed of a tube 23 which can rotate on the shaft 12. The shaft 11 is clamped in the side pieces 15,16 by the nuts 24, 25. Furthermore, the tube 20 of the drum 11 is provided with cutters 26 for receiving of slats 17 which, if the material allows, can be welded together with the tube 23 to form a rotor similar to drum 11. The drum 11, with the built-in locks described by the distance between the slats 17, can carry a quantity of material through the safety lock 4 , 8 for each time the lock is filled and emptied.
    Mounted on the protective cover 3, the passage of material takes place through the security lock 4 at an angle where the gravitational forces can help cause the drum 11 to rotate. This results in a "vacuum" effect, where material being delivered pulls new material into the lock. Since the drum 11 is suspended easily rotatable about the shaft 12, without great friction, and the slats 17 are designed to prevent materials from adhering to the slats 17, or to the shields 18, 19, raw materials are easily and uncomplicatedly inserted into the container 2. The same applies to finished products in case the safety lock 4.8 is mounted on the discharge flap.
    Whether the security lock is supplied to materials manually with a hand operated bucket, or the supply is via a conveyor belt or lifting box, does not matter to the operation of the system, as the lock is designed to receive and forward material, be it raw material or finished product, without this accumulating say, or form coating in the opening.
    权利要求:
    Claims (10)
    [1]
    A safety device comprising a safety lock with an inlet and an outlet, wherein the safety lock is adapted for mounting on an inlet opening and / or an outlet opening on a mixing machine, where the passage through the safety lock is dimensioned in such a way that material can pass through. , for example in portions, but preventing persons from coming into contact with parts located on the other side of the safety lock, such as the moving parts of the mixer.
    [2]
    Security device according to claim 1, characterized in that the security lock comprises a housing with a first opening which acts as an inlet and a second opening which acts as an outlet, wherein the housing is provided with at least two lock gates, configured so that the lock gates regulate. the size of the opening through the security lock.
    [3]
    Security device according to claim 2, characterized in that the locking gates are configured to form at least two locking chambers, which means that when one locking chamber is connected to the opening in the housing which acts as an outlet, another locking chamber is connected to the opening. in the cabinet which acts as inlet.
    [4]
    Security device according to claim 3, characterized in that the security lock comprises a drum, wherein the drum is suspended in the cabinet rotatable about its axis, in a bearing, formed in the housing in such a way that the bearing in the housing and the bearing counterpart in the drum form the bearing, and wherein the drum is provided with at least two slats acting as sluice gates between the opening acting as the input and the opening acting as output.
    [5]
    Safety device according to claim 4, characterized in that the slats are formed on or attached to the drum so that they radially extend from the drum relative to the drum's suspension axis.
    [6]
    Safety device according to claim 5, characterized in that the slats are formed or fixed on the drum, so that they describe the same angle of rotation over the entire length of the drum's suspension axis.
    [7]
    Security device according to one of claims 4 to 6, characterized in that the safety lock drum is formed with slats which are a fixed and non-replaceable part of the drum and / or that the safety lock drum is provided with an adapter for fixing loose interchangeable slats on the drum.
    [8]
    Security device according to one of claims 4 to 7, characterized in that the slats are made wholly or partially of at least one of the materials: plastic, teflon, rubber, or metal, stainless steel, aluminum.
    [9]
    Security device according to one of claims 7 to 8, characterized in that the slats are further provided with a gasket, a scraper or a broom.
    [10]
    A mixing machine such as, for example, a forced mixer, a flow mixer, a counter flow mixer and the like, wherein the mixing machine comprises at least one container provided with a device for forced mixing raw materials into a finished product, the container having an opening for receiving raw materials, and an opening for passing the finished product out of the container, characterized in that the mixing machine is provided on at least one of the openings with the safety lock according to one of claims 1 to 9.
    类似技术:
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    同族专利:
    公开号 | 公开日
    DK178426B1|2016-02-22|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    GB1384307A|1972-05-26|1975-02-19|Farmhand Uk Ltd|Mobile equipment for milling and mixing animal foodstuffs|
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    JP2006076766A|2004-09-13|2006-03-23|Nippon Alum Co Ltd|Highly hermetic rotary valve|
    DE102005048733A1|2005-10-12|2007-04-26|Coperion Waeschle Gmbh & Co. Kg|Rotary gating device for the delivery of granulated material has a radial bucket wheel having tips with sealing strips|
    WO2008135503A1|2007-05-04|2008-11-13|S.A. Lhoist Recherche Et Developpement|Method for continuously projecting low density concrete|
    US20110081178A1|2009-10-02|2011-04-07|Xerox Corporation|Waste Cyclone Dispense System with Controlled Rotating Cylinder Gate|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DK201300378|2013-06-19|
    DK201300378A|DK178426B1|2013-06-19|2013-06-19|Mixer|DK201300378A| DK178426B1|2013-06-19|2013-06-19|Mixer|
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