• 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:
    1. HIGHLY EFFICIENT INDUSTRIAL FILTER for trapping solid particles from a moving gas or steam with a filter cloth from a single tape, zigzag folded into flat pockets, fitted with clean and dusty sides of their surfaces with freely suspended spacers, and with a device for blowing filter cloth through the fact that on the filtering multi-pocket inset 6 are made at both ends of the filter fabric tape transverse sealing cuffs 9 and pockets formed by the side edges of the filter fabric are sewed by vertical seams 7 and with longitudinal elastic cuffs 8 made of the same fabric that are attached to the upper part of the pockets by other horizontal seams 7, while the length of the seams 7 coming from 1 t / f of the active filtration surface is less 1.5 m, the said filter insert 6 is located on the partition wall 4, which separates the dusty section of the filter from the outlet chamber 5 and on which the separating corners 14 create grilles, into the holes of which the pockets fi are inserted The lithrome insert 6 and its sealing cuffs 8, 9 are pressed against the dividing wall 4 of the pressure sealing frame 18, the contour of which is formed by channels, facing down with their shelves 19 and forming the sealing contours on the cuffs 8, 9 of the filter insert 6, and the length of this the seals coming from 1 m of the active filtration surface is less than 0.2 m, and the hermetic welded seams 11 of the partition 4 have a length of less than 2.5 cm by 1 m of the active filtration surface, herewith The sheet lining 26 of the filter chamber 2 and the sheet lining 27 of the output chamber 5 are attached to the contour corner 10 of the partition 4 by welds 24. 2. The filter according to claim 1, characterized in that i above the ceiling 12 of the partition 4 corresponding to one filter (L With a rotary multi-pocket insert 6, output shaft 30 and purge shaft 31 are arranged one after the other, each of which has a saddle 32, on one side of which is a common shaft 33, on which the outlet valve 34 located in you one shaft 30 under the saddle 32 and the purge valve 35 disposed in the purge shaft 31 above the seat 32, the valves 34 and 35 on the shaft 33 are mounted at an angle to one another ;: 4 and the shaft is controlled by the fingers 41 cl | and 42 regeneration disks 39 by means of cam 36. 3. Filter by paragraphs. 1 and 2, characterized in that the purge pits 31 through the purge part 51, the purge pipe 49, the metering valve 48 and the bend 46, provided with a control valve 47, are connected to the outlet pipe 45 behind the fan.
    公开号:SU1014579A1
    申请号:SU797770730
    申请日:1979-08-07
    公开日:1983-04-30
    发明作者:Йири Альбрехт
    申请人:Вызкумны Устав Вздухотехники (Инопредприятие)；
    IPC主号:
    专利说明:

    The invention relates to a device for the purification of gases by filtration and can be used in various industries that require purification of gases. In existing industrial filters with filter elements in the form of sleeves or differently arranged pockets, very low output dust concentrations are achieved compared with other types of industrial dust collectors. Filters are known that achieve an output concentration below 50 mg / m of gas or steam, and some manufacturers guarantee an output concentration below 20 mg / m for their filters. However, the known industrial filters or dust collectors do not provide output concentrations that are constantly so low, i.e., below 1 mg / m, so that the purified gas or steam can be returned to the working space. New types of high-performance filter fabrics make it possible to achieve an output concentration below 1 mg / m, however, their application in practice slightly increases the efficiency of dust collection. Evaluation of the quality of well-known industrial filters from the point of view of the existing solution of the above problems shows that there is still no reason for a filter that has a comprehensive solution to this problem. Thus, for example, the method of sealing filter fabrics in existing filters does not provide, under operating conditions, perfect separation of cleaned and dusty sections. In bag filters, there is usually more than 2.5 m of the length of the joints of filter cloth per 1 m of filtration surface, and slip through these joints increases. The total length of the sealing surfaces, which for bag or pocket filters with individual pockets is usually more than 0.5 m per 1 m of the filtration surface, adversely affects the output concentration. The known designs of the dividing walls between the cleaned and dusty filter sections require a considerable length of welded joints that cannot be tested for leaks during the manufacturing process. Enough of a negligible weld defect and due to the resulting leakage, the entire effect of the filter is lost. Re-blowing is the most common type of regeneration. If air used for purging is sucked from the closest surrounding of the filter, then dusting of the clean side of the filter cloth may occur, since the concentration of pollution in the atmosphere of industrial plants varies between 1 and 10 mg / m of gas or steam. Therefore, by blowing on the clean side of the fabric, dust is precipitated, which is released and carried to the outlet. If gas or steam from the blower pipe of the fan is used to blow through, the output concentrations are ten mg / m. Another unfavorable factor is a larger backwash rate, which is generally not measured and not regulated. Studies have shown that, first of all, when dust containing particles less than 1 µm is captured, the output concentration increases sharply with an increase in the purge rate. The object of the invention is to provide an output concentration of the order of tenths of mg / m of gas or steam over the entire service life of the filter cloth and, after replacing the filter inserts under operating conditions, is to use highly efficient filter cloths with a fundamentally new way of solving a whole number of elements industrial filter designs. First of all, we have in mind the optimal solution of the following problems, which determine the value of the output concentration: the quality and total length of the joints of filter cloth related to the filtration surface; ensuring tightness of fastening of filter fabric inside the filter; making a partition between the cleaned and dusty sections of the filter in terms of density; ensuring reliable density in the operational replacement of filter cloth; preventing the dusting of the filter cloth from the clean side when purging it; optimization and control of reverse blowdown; a regeneration method comprising attaching the filter fabric and spacers to prevent mechanical loading of the filter fabric. A highly efficient industrial filter according to the invention ensures the achievement of a low concentration of solid particles in the purified gas or vapor. Its essence lies in the fact that on the multi-pocket filter insert there are transverse sealing cuffs and pockets formed on both sides of the filter fabric tape and pockets formed by connecting the lateral edges of the filter fabric ribbon with vertical seams. To the top of the pockets other horizontal seams attached longitudinal sealing cuffs from the same filter fabric. The length of the seams coming from 1 m of the active filtration surface is less than 1.5 m. This filter insert is located on the partition wall separating the dusty section of the filter from its exit chamber. The partition walls are formed by the dividing corners of the lattice, into the holes of which the pockets of the filter insert are inserted, and its sealing cuffs are pressed against the partition wall by a pressure seal frame. The contour of the frame is formed by channels facing down with their shelves and forming one after another closed sealing contours on the cuffs of the filter insert. At the same time, the length of this seal, the arrival of a conduit with 1 m of active filtration surface, is less than 0.2 m. The length of hermetic welded seams of the dividing partition, which comes with 1 m of active filtration surface, is less than 2.5 cm. As a common sheet filter chamber, 15 and sheet obshchivka output chamber attached to the contour corner of the separation wall by welds. At the same time, a highly efficient filter makes it possible to achieve in output conditions in output conditions well below 1 mg / m. Operational measurements show extremely low values, which are within hundredths of mg / m, over the entire service life of the filter cloth, which is 25 due to a low mechanical load during the regeneration period, at least 12,000 hours of operation. When these extremely low output concentrations are reached, it is possible to return the cleaned gas or steam back to the working month-30 that, due to which during the winter period there is a considerable saving of energy, which otherwise would have to be spent on heating the newly supplied air. In the summertime, purified gas or a fan outlet can be used to condition the air in workplaces. The gas or vapor purified in the proposed device and fed into the working room has a concentration of contaminants 40 to 10-100 times lower than the concentration of contamination in the working atmosphere of industrial production. As a result of recirculation, the concentration in the working atmosphere decreases, almost reaching the value of the output concentration from the filter, which greatly improves the working conditions and reduces the presence of dust. In industries where, because of the composition or temperature, it is not possible to return the cleaned gas or steam to the workplace, it is released into the atmosphere. Compared to existing filters, the outlet concentration is so low that not only is there no need to build expensive chimneys, but in most cases the emitted gas or steam is cleaner than the surrounding air. As a result of the use of a highly efficient industrial filter, the harmful effects of solid emissions on the surrounding area are eliminated and an overall improvement in the environment is achieved. FIG. 1 shows a longitudinal side section of two chambers of a four-chamber filter; in fig. 2 is a section A-A in FIG. one; in fig. 3 - part of the partition wall, filter insert with 4 pockets and sealing frame, an axonometric view showing the fastening of the filter insert to the partition wall; in fig. 4 - dividing partition, general appearance; in fig. 5 — part of the filter and outlet chambers with sealing elements on a larger scale, lateral cross-section; in fig. 6 - part of the regeneration panel with the output and purge shafts and valves, axonometric view; in fig. 7-9 are a schematic depiction of the positions of the valves controlling the cam and fingers; in fig. 10 - top part of the filter, adapted to purge with ambient gas or steam, partial section. Four filter chambers 2 are symmetrically arranged in a quadrilateral housing in plan 1 with an outlet part between opposing pairs of chambers 2. Gas or steam for cleaning enter the filter through the inlet part 3. Separate filter chambers 2 are located under the partition wall 4 separating the clean output chambers 5 at the top of the dusty filter section at the bottom. In each of the filter chambers 2 there is a multi-pocket insert 6, made of a single zigzag folded filter fabric tape, with individual pockets formed by joining the side edges of the filter fabric tape with seams 7 (Fig. 3). The ends of the filter fabric tape form longitudinal sealing cuffs 8. Transverse sealing cuffs 9 are made of the same fabric, connected in corresponding places of the belt also by the tongues 7. The total length of the schv 7 of the eight-pocket filter insert 6, which has an active filtration surface of 25 m, is 22 , 7 m. The dividing wall 4 (Fig. 4) consists of a contour angle 10 with welds 11 at the corners, with overlapping 12 above the inlet part 3 and with connecting elements 13 above the space between adjacent filters. Cameras 2. Between the connecting elements 13 and the opposite parts of the contour corner 10, separating corners 14 are installed, forming a grate above each filter chamber 2, through the holes of which the pockets of the filter insert 6 are passed. The upper horizontal parts of the filter insert b rest on longitudinal separating corners 14, and its longitudinal and transverse cuffs 8 and 9 are adjacent to the contour corner; to the connecting element 13 and the overlap 12. The total length of the welds 11 requiring tightness, the contour angle 10, the overlap {2 and the connecting elements 13 of the partition 4 is 100 irf of the active filtration surface of all four filter inserts. Between the individual planar elements of the filter insert 6, outer spacing wire cages 15 and inner spacing wire cages 16 are placed, which prevent the pockets from sticking together both in filtration mode and in reverse purge mode. The outer frames 15 are freely suspended by means of the suspensions 17 to the partition angles 14 and the contour corner 10 of the partition 4. The internal frames 16 are freely suspended from the pressure seal frame 18. The cuffs 8 and 9 of the filter insert 6 are sandwiched between the partition partition 4 and the shelves 19 of the contour channel pressure seal a frame 19 in which there are holes 20 for the pins 21. On the contour corners 10, the overlap 12 and the connecting element 13 of the partition 4 there are vertical pins 21 and in m The filter cartridge inserts 8, 9 have corresponding holes 22, through which the filter insert 6 is strung on the pins 21. The diameter of the holes 22 in the cuffs 8 and 9 of the insert 6 is about 20% smaller than the diameter of the pins 21 in order to ensure tightness when the filter insert 6 is tight pins 21. A valve 23 (see Fig. 5) of the flange 19 of the channel of the presser sealing frame 18 is pressed against the cuffs 8 and 9 of the filter insert 6 so that the shelves 19 of the presser sealing frame 18 form two positioned closed seals one after the other contouring circuits. The total length of the seal is 11.5 per 100 m of the active filtration surface of all four filter inserts 6. The contour corner 10 of the partition wall 4 is welded to the contour corner 10 by the seam 24 of the lateral sheet skin 25 of the filter chamber 2, which goes down into the chute 26. K the upper part of the contour corner 10 is welded by a separate seam 24 of the side sheet skin 27 of the exit chamber 5, which is closed by a removable cover 28, properly sealed on the filter housing 1. Removable covers 28 provide access to the filter inserts 6 when they are replaced and sealed. Replacing the pocket filter inserts 6 is simple and very fast; On the upper part of the filter housing 1, a regeneration panel is formed between the pairs of covers, formed by a base plate 29, on which two exit shafts 30 are made, each of which is common to two adjacent filter chambers 2, and two blowing shafts 31, also common to two adjacent filter chambers 2 (Fig. 1, 6). Seats 32 are installed inside both shields 30 and 31 with separate openings for both adjacent filter 2 and outlet chambers 5v. Shafts 33 are installed on their sides, passing through the outlet shaft 30 and the purge shaft 31 of the corresponding filter and output chambers 2 and 5. On the shaft 33 is fixed at the exit shaft 30 by a taper valve 34 under the saddle 32, at the purge shaft 31 a purge valve 35 over the saddle. 32, and the angle between the two valves 34 and 35 is approximately 70 °. Both valves 34 and 35 are simultaneously controlled by a cam 36 mounted on shaft 33. Between the saddles 32 in the exit shaft 30 and the purge shaft 31 of the adjacent output chambers 5, they reach the overlap 12 of the longitudinal walls 37. Their branching under the overlap 12 forms the inlet part 3 between adjacent pairs of filter chambers 2. Similarly arranged under the base plate 29 of the regeneration panel are transverse dividing walls 38, reaching to the dividing wall 4 and extending above and below the dividing wall 4 between the two adjacent output and filter chambers 2 and 5 (Fig. 1). On the plate of the regeneration panel base 29, a rotating regeneration disk 39 is placed for regeneration of the filter insert 6 (Fig. 1), driven from the electric motor 40 through the reducer, with the purge valve opening finger 41 and the closing finger 42 of the purge valve 35 (Fig. 7-9 ). The valves of all four output and filter chambers 5 and 2 are controlled in the same way. The output shafts 30 have an output part 43 to which a fan 44 is connected, to the pressure side of which is connected an outlet pipe 45 equipped with an elbow 46. , and measuring valve 48, purge pipe 49, connected by means of connecting purge parts 50 to purge shafts 3. The described embodiment involves the return purging of the filter cloth with purified gas or rum. In the embodiment shown in FIG. 10, the filter is adapted to purge with sufficiently clean air. Blow shafts 31 are directly connected to the surrounding atmosphere through the exit portion.
    51. The purge pipe connected to the outlet of the intake fan 44 falls away.
    The filter works as follows.
    The contaminated gas or steam is fed into the filter through the inlet part 3, from where it passes into the upper part of the jar 26 and further into the separate filter chambers 2. On the outer surface of the pockets of the multi-filter insert 6, solid particles are trapped and the purified gas or vapor flows through the output chambers 5 in the output of 30 through the open outlet valves 34. The fan 44 diverts the purified gas or steam through the outlet part 43 to the output pipe 45.
    When the filter is operated, the filtration phase regularly alternates, in which solid particles are trapped on the filter inserts 6, and the regeneration phase, during which all four filter chambers 2 are gradually blown in the opposite direction, and the dust caught on the surface of the fabric is released and falls into the drain 26 .
    The purging of the multi-pocket filter 6 of the insert 6 (Fig. 1) is carried out from the outlet conduit 45. A control valve 47 is installed in the elbow 46, the purpose of which is to set the purge speed optimally. The adjustment is made with the help of a measuring valve 48 calibrated in terms of filtration speed. The actual purge is controlled by fingers 41 and 42 on the regeneration disk 39 (Fig. 7-9, the impact of which on the cam 36 causes the shaft 33 to turn in one or the other direction, while simultaneously disconnecting the output the valve 34 and the purge valve 36 of the respective filter chamber 2 to the position for filtering or for purging. The valves 34 and 35 are pressed against their support planes on the saddle 32 by the excessive pressure of gas or steam from one Fig. 7-9 shows the order of this closing and opening of the valves 34 and 35. Fig. 7 shows the outlet valve 34 in the open position and the purge valve 35 in the closed position. In Fig. 8 the opening finger 41 The blower valve 35 has moved to a position where, after contact with the cam 36, it gradually opens the purge valve 35 and closes the outlet valve 34. When the opening feld 41 comes out of contact with the cam 36, the purge valve 35 is almost open and the outlet valve 34 is closed. The overpressure from the purge pipe 49, which is also transmitted to the output shaft 30 under the outlet valve 34 to be closed, together with the vacuum effect inside the filter acting above the outlet valve 34, presses the outlet valve 34 to the saddle 32 and thus blocks the communication of this space with the outlet part 43 Under these conditions, the multi-pocket filter insert 6 is purged. Upon further rotation of the regeneration disk 39, the closing valve 42 comes in contact with the other side of the cam 36, and the entire control process proceeds in the opposite direction, and by the end of this process, when suction occurs through the output shaft 30 under the influence of overpressure from the purge pipe 49 and the vacuum inside of the filter, the purge valve 35 is pressed against the seat 32. During one revolution of the regeneration disk 39, all four filter chambers 5 are gradually purged.
    Since the final pressing of the valves 34 and 35 is carried out automatically under the influence of overpressure on one side of the corresponding valve 34 or 35, the shafts 33 can be mounted on sliding bearings with a large gap without lubrication points. On the same basis, there is no need for precise fit of individual parts of the whole mechanism, since under the influence of dynamic forces and static pressures, valves 34 and 35 will automatically take the correct position with respect to the saddles 32.
    The described implementation of the proposed filter is only one of the possible; many elements can be modified. For example, it is possible to press the clamping sealing frame 18 to the cuffs 8 and 9 of the filter insert 6 with the help of sealing washers and nuts with pins x 21, provided with cutting, or without using pins 21 with this. that the clamping elements are supported on the projections of the side plating 27 of the exit chamber 5 and the longitudinal and transverse dividing walls 37 and 38 with increased rigidity.
    In cases where there are very low concentrations of contaminants in the vicinity of the filter in the atmosphere and there is no need to carry out a reverse purge with purified gas or steam, it is possible to use ambient air for purging. In this embodiment, the purge portions 49, 50 are omitted and a simple outlet portion 51 is used. The remaining portions of the filter remain unchanged. The operation of the filter is similar to that described above.
    The proposed filter can be used as pressure. In this case, it is necessary to use a purge fan built into the purge line, which would suck in the cleaned gas or steam from the outlet line, if necessary, or the gas or steam from the filter surround.
    The symmetrical arrangement of the filter housing with a square plan and an inlet chamber in the middle enables simple
    aggregating the housings side by side or one after the other into larger filter installations with the required capacity. 30 33 33 40 J8
    It is recognized as an invention according to the results of the examination carried out by the Office for the Invention of the Czechoslovak Socialist Republic. 1 Hz
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    权利要求:
    Claims (3)
    [1]
    I. HIGH EFFICIENCY INDUSTRIAL FILTER for trapping solid particles from moving gas or steam with a filter cloth from a single tape zigzag folded in the form of flat pockets equipped with free and dusty sides of their surfaces with freely suspended spacers and with a device for blowing filter cloth, characterized the fact that the transverse sealing cuffs 9 and pockets formed by the connection are made on the multi-pocket filter insert 6 at both ends of the filter cloth ribbon Shackle edges of the filter cloth tape vertical joints 7 and 8 longitudinal sealing sleeves from the same fabric, which is attached to the top of the other pockets horizontal welds 7, wherein the length of the seam 7 per 1 m 2 of the active filtering surface, is less than 1.5 m , the specified filter insert 6 is located on the dividing wall 4, which separates the dusty section of the filter from the output chamber 5 and on which dividing corners 14 create gratings, in the openings of which pockets of the filter are inserted th insert 6 and its sealing cuffs 8, 9 are pressed against the dividing wall 4 of the pressing sealing frame 18, the contour of which is formed by channels facing downwards by their shelves 19 and forming sealing contours located one after another on the cuffs 8, 9 of the filter insert 6, and the length this seal attributable to 1 m 2 of the active filter surface is less than 0.2 m, and hermetic welds 11 of the partition wall 4 have a length less than 2.5 cm per 1 m 2 of the active filtering surface, thus both sheets sheathing 26 and filter chamber 2 and the sheeting 27 of the discharge chamber 5 are attached to the contoured corner 10 of the partition wall 4 by welds 24.
    [2]
    2. Filter by π. 1, characterized in that over the overlap 12 of the dividing wall 4, corresponding to one filter multi-pocket insert 6, are located one after the other the output shaft 30 and the purge shaft 31, in each of which a saddle 32 is installed, on one side of which there is a common shaft 33, on which the outlet valve 34 is located, located in the outlet shaft 30 under the seat 32, and the purge valve 35, located in the purge shaft 31 above the seat 32, the valves 34 and 35 on the shaft 33 are installed at an angle to one another and the shaft is controlled by fingers and 41 and 42 of the regeneration disk 39 by the cam 36.
    [3]
    3. The filter according to paragraphs. 1 and 2, characterized in that the purge shafts 31 through the purge part 51, the purge pipe 49, the metering valve 48, and the elbow 46 provided with a control valve 47 are connected to the outlet pipe 45 behind the fan.
    类似技术:
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    同族专利:
    公开号 | 公开日
    CS208254B1|1981-09-15|
    ATA580879A|1984-03-15|
    DE2931403C2|1987-03-05|
    AT376142B|1984-10-10|
    DE2931403A1|1980-03-20|
    DD156115A3|1982-08-04|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    RU2697689C1|2018-09-19|2019-08-16|Артем Сергеевич Ткаченко|Sleeve / cartridge filter|DE441252C|1925-05-23|1927-03-02|Buehler Ag Geb|Slider for temporarily switching off one filter chamber after the other from the dust air flow in order to pass the counter air flow through filters with filter hoses divided into chambers|
    NL108914C|1958-01-08|1900-01-01|
    DE7510986U|1975-04-08|1975-10-23|Noel Marquet & Cie Sa|POCKET FILTER|
    GB1579231A|1976-07-03|1980-11-19|Lucas Industries Ltd|Method of manufacturing a filter element|GB2162768B|1984-08-06|1989-01-11|Tilghman Wheelabrator Ltd|Filtering apparatus|
    DE3505729A1|1985-02-15|1986-08-21|Deutsche Filterbau GmbH, 4000 Düsseldorf|METHOD FOR CLEANING FILTER ELEMENTS|
    US4808203A|1986-01-17|1989-02-28|Hubert Sabourin Inc.|Dust collector|
    US5405421A|1993-09-22|1995-04-11|Swisher, Jr.; George W.|Gas stream filtering system using filtered gas for reverse flow cleaning|
    US6890365B2|2003-05-09|2005-05-10|Dillman Equipment, Inc.|Reverse-flow baghouse|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    CS785840A|CS208254B1|1978-09-11|1978-09-11|High-efficiency industrial filter|
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