CN221037901U - Bypass valve sealing performance detection device for bag-type dust collector - Google Patents
Bypass valve sealing performance detection device for bag-type dust collector Download PDFInfo
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- CN221037901U CN221037901U CN202323029057.8U CN202323029057U CN221037901U CN 221037901 U CN221037901 U CN 221037901U CN 202323029057 U CN202323029057 U CN 202323029057U CN 221037901 U CN221037901 U CN 221037901U
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- air
- box body
- bypass valve
- valve
- sealing
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- 238000007789 sealing Methods 0.000 title claims abstract description 56
- 239000000428 dust Substances 0.000 title claims abstract description 44
- 238000001514 detection method Methods 0.000 title claims abstract description 27
- 238000005192 partition Methods 0.000 claims abstract description 18
- 230000007246 mechanism Effects 0.000 claims abstract description 16
- 230000000149 penetrating effect Effects 0.000 claims abstract description 11
- 238000007599 discharging Methods 0.000 claims abstract description 5
- 229920001971 elastomer Polymers 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 4
- 229920001973 fluoroelastomer Polymers 0.000 description 4
- 238000001914 filtration Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 210000003437 trachea Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
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- Details Of Valves (AREA)
Abstract
The utility model belongs to the field of bag-type dust collectors, and particularly relates to a bypass valve sealing performance detection device for a bag-type dust collector, which comprises an upper box body, a middle box body and a lower box body which are arranged in a stacked manner, wherein a discharging end seat is arranged at the bottom of the lower box body; the dust removing mechanism comprises an air inlet end seat and a clean air end seat which are arranged at two ends of the middle box body, an inclined air channel partition plate is arranged between the air inlet end seat and the clean air end seat, and a plurality of filter bags are arranged on the air channel partition plate at intervals; the bypass mechanism comprises a bypass valve penetrating through the inner cavities of the upper box body and the middle box body; because the sealing groove and the sealing channel which is sealed by the valve plate are combined with the two air pipes to form a detection passage, compressed air after the pressure of the pressure reducing valve is reduced by the air pipes is filled into the sealing groove of the bypass valve, the sealing detection mechanism is isolated from the atmosphere when the sealing detection mechanism is not used by the stop valve, and the sealing performance of the inner sealing groove is judged by the pressure value of the external pressure gauge, so that the effect that a person does not need to stop to enter the dust remover to possibly check is achieved.
Description
Technical Field
The utility model relates to the field of bag-type dust collectors, in particular to a bypass valve sealing performance detection device for a bag-type dust collector.
Background
The working principle of the bag-type dust remover of the boiler is that dust-containing gas enters a filtering chamber from a lower part wind cone, dust is retained on the outer surface of the filtering bag after the dust-containing gas is filtered by the filtering bag, clean gas flows into a gas purifying chamber from a bag opening, and is discharged into the atmosphere by a draught fan; when the dust on the outer surface of the filter bag is continuously increased, the control system starts a dust removing program, the pulse valves are opened one by one, compressed air blows the filter bag through the nozzles to remove dust, so that the dust on the surface of the filter bag falls off to the dust hopper, and then the dust is discharged out of the dust remover through the air locking dust discharging valve.
At present, most of the built-in bypass valves of the dust collectors in the market use fluororubber strips in sealing, the fluororubber strips are compressed by a pressing plate, a part which is not compressed and a valve plate form sealing, the fluororubber strips used under smoke for a long time are easy to age and lose efficacy, the sealing performance of the fluororubber strips and the valve plate is poor after the elasticity cannot be recovered, the dust collectors are discharged out of standard when serious, when the bypass valve adopts a built-in mode of the dust collectors, the sealing of a sealing surface is required to be checked again after installation and operation, the dust collectors are difficult to stop, and maintenance personnel enter the dust collectors to check.
Disclosure of utility model
Object of the utility model
In order to solve the technical problems in the background art, the utility model provides a bypass valve sealing performance detection device for a bag-type dust collector, which has the characteristic of checking the sealing performance of a built-in bypass valve of the bag-type dust collector through external equipment under the condition of no shutdown.
(II) technical scheme
In order to solve the technical problems, the utility model provides a bypass valve sealing performance detection device for a bag-type dust collector, which comprises an upper box body, a middle box body and a lower box body which are arranged in a stacked manner, wherein a discharging end seat is arranged at the bottom of the lower box body;
The dust removing mechanism comprises an air inlet end seat and a clean air end seat which are arranged at two ends of the middle box body, an inclined air channel partition plate is arranged between the air inlet end seat and the clean air end seat, and a plurality of filter bags are arranged on the air channel partition plate at intervals;
The bypass mechanism comprises a bypass valve penetrating through the inner cavities of the upper box body and the middle box body, an air guide cylinder penetrating through the air duct partition plate is arranged at the bottom of the bypass valve, a sealing groove with an inner groove is arranged at the joint of the bypass valve and the air guide cylinder, and a sealing piece is arranged in the sealing groove;
The middle part of the bypass valve is provided with a driving cylinder, the output end of the driving cylinder is provided with a piston rod capable of sliding up and down, and the bottom of the piston rod is connected with a valve plate which presses and covers the sealing groove;
The sealing detection mechanism comprises two groups of air pipes penetrating through the sealing groove, one air pipe is provided with a first stop valve and a pressure reducing valve in sequence along the air inlet direction, and the other air pipe is provided with a second stop valve and a pressure gauge in sequence along the air outlet direction.
Preferably, the inner cavity of the upper box body is divided into a dust-air zone and a clean-air zone by the air duct partition plate, and the upper part and the lower part of the filter bag penetrate into the clean-air zone and the dust-air zone respectively.
Preferably, the opening end of the air guide cylinder penetrates into the dust-air space separated by the air channel partition plate.
Preferably, the seal is a hollow rubber member with a raised edge attached to the valve plate.
Preferably, the sealing channel sealed by the sealing groove and the valve plate is combined with the two air pipes to form a detection passage.
Preferably, an air gap is reserved between the valve plate and the valve channel of the bypass valve.
The technical scheme of the utility model has the following beneficial technical effects: because seal groove and valve plate confined seal channel and two trachea combination are the detection passageway, fill the seal groove of bypass valve with the compressed air after the relief pressure valve decompression through the trachea, keep apart seal detection mechanism with the atmosphere when not using through first stop valve and second stop valve, judge the sealing performance of inside seal groove by the pressure value of external manometer, reach the effect that need not shut down personnel and get into the dust remover inside just probably carry out the inspection.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic cross-sectional view of the present utility model;
Fig. 3 is a schematic structural view of a seal detection mechanism according to the present utility model.
Reference numerals:
1. An upper case; 2. a middle box body; 3. a lower box body; 4. a discharge end seat; 51. an air inlet end seat; 52. an air duct partition; 53. a filter bag; 54. a clean gas end seat; 61. a bypass valve; 62. a gas cylinder; 63. sealing grooves; 64. a seal; 65. a driving cylinder; 66. a piston rod; 67. a valve plate; 71. an air pipe; 72. a first stop valve; 73. a pressure reducing valve; 74. a second shut-off valve; 75. a pressure gauge.
Detailed Description
The objects, technical solutions and advantages of the present utility model will become more apparent by the following detailed description of the present utility model with reference to the accompanying drawings. It should be understood that the description is only illustrative and is not intended to limit the scope of the utility model. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present utility model.
As shown in fig. 1-3, the bypass valve sealing performance detection device for the bag-type dust collector provided by the utility model comprises an upper box body 1, a middle box body 2 and a lower box body 3 which are arranged in a laminated manner, wherein a discharging end seat 4 is arranged at the bottom of the lower box body 3;
The dust removing mechanism comprises an air inlet end seat 51 and a clean air end seat 54 which are arranged at two ends of the middle box body 2, an inclined air channel partition plate 52 is arranged between the air inlet end seat 51 and the clean air end seat 54, and a plurality of filter bags 53 are arranged on the air channel partition plate 52 at intervals;
The bypass mechanism comprises a bypass valve 61 penetrating through the inner cavities of the upper box body 1 and the middle box body 2, an air guide cylinder 62 penetrating through the air channel partition plate 52 is arranged at the bottom of the bypass valve 61, a sealing groove 63 with an inner groove is arranged at the joint of the bypass valve 61 and the air guide cylinder 62, and a sealing piece 64 is arranged in the sealing groove 63;
A driving cylinder 65 is arranged in the middle of the bypass valve 61, a piston rod 66 capable of sliding up and down is arranged at the output end of the driving cylinder 65, and the bottom of the piston rod 66 is connected with a valve plate 67 which presses the sealing groove 63;
The seal detection mechanism includes two sets of air pipes 71 penetrating through the inside of the seal groove 63, a first stop valve 72 and a pressure reducing valve 73 are sequentially arranged on one air pipe 71 along the air inlet direction, and a second stop valve 74 and a pressure gauge 75 are sequentially arranged on the other air pipe 71 along the air outlet direction.
It should be noted that: the inner cavity of the upper box body 1 is divided into a dust-air zone and a clean-air zone by an air duct partition plate 52, and the upper part and the lower part of the filter bag 53 respectively penetrate into the clean-air zone and the dust-air zone; when the bypass valve 61 is closed, the dust gas is purified by the filter bag 53 and then enters the inner cavity to float up until entering the upper clean gas zone, and the clean gas can be discharged to the outside because the clean gas zone is communicated with the clean gas end seat 54.
As an example of the operation of the bypass valve 61: when the smoke working condition exceeds the use working condition which can be borne by the filter bag of the bag-type dust collector, the bypass valve 61 starts to work, the driving cylinder 65 drives the piston rod 66 to shrink and drives the valve plate 67 to move upwards, the air guide cylinder 62 in the sealed state is switched to be in a penetrating state, the opening end of the air guide cylinder 62 penetrates into the dust-air space separated by the air channel partition plate 52, an air gap is reserved between the valve plate 67 and the valve channel of the bypass valve 61, and the dust air is directly discharged out of the lower dust-air space of the middle box body 1 along the air gap in an upward floating mode.
In this embodiment, the seal 64 is a hollow rubber member, the raised edge of which is attached to the valve plate 67 to perform axial sealing at the bypass valve 61 and the air tube 62, and when the sealing stability needs to be detected, the sealing channel closed by the seal groove 63 and the valve plate 67 is combined with the two air tubes 71 to form a detection path, compressed air after the pressure reduction of the pressure reducing valve 73 is filled into the seal groove 63 of the bypass valve 61 through the air tubes 71, the seal detecting mechanism is isolated from the atmosphere when not in use through the first stop valve 72 and the second stop valve 74, and the sealing performance of the inner seal groove 63 is judged by the pressure value of the external pressure gauge 75, so that the effect that the detection is possible without stopping personnel entering the interior of the dust remover is achieved.
As a detection example: when the bypass valve 61 is found to be likely to leak and the sealing performance needs to be detected after the installation of the bypass valve 61 is completed and during normal operation, the highest pressure of the pressure reducing valve 73 is regulated according to the resistance level of the dust remover, the two stop valves are sequentially opened along the gas conveying direction, the change of the pointer of the pressure gauge 75 is observed, after a period of time of filling of compressed air into the sealing groove 63 in the bypass valve 61, if the pointer of the pressure gauge 75 slowly rises and the pressure value is close to the set output pressure of the pressure reducing valve 73, the bypass valve 61 is proved to be well sealed; if the pointer of the pressure gauge 75 is not moving or frequently jumps at a low position, the pressure value set by the pressure regulating valve 73 is always too large, which indicates that the sealing performance of the bypass valve 61 is poor and the air leakage phenomenon exists.
It is to be understood that the above-described embodiments of the present utility model are merely illustrative of or explanation of the principles of the present utility model and are in no way limiting of the utility model. Accordingly, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present utility model should be included in the scope of the present utility model. Furthermore, the appended claims are intended to cover all such changes and modifications that fall within the scope and boundary of the appended claims, or equivalents of such scope and boundary.
Claims (6)
1. The bypass valve sealing performance detection device for the bag-type dust collector is characterized by comprising an upper box body (1), a middle box body (2) and a lower box body (3) which are arranged in a laminated mode, wherein a discharging end seat (4) is arranged at the bottom of the lower box body (3);
the dust removing mechanism comprises an air inlet end seat (51) and an air purifying end seat (54) which are arranged at two ends of the middle box body (2), an inclined air duct partition plate (52) is arranged between the air inlet end seat (51) and the air purifying end seat (54), and a plurality of filter bags (53) are arranged on the air duct partition plate (52) at intervals;
The bypass mechanism comprises a bypass valve (61) penetrating through the inner cavities of the upper box body (1) and the middle box body (2), an air guide cylinder (62) penetrating through the air channel partition plate (52) is arranged at the bottom of the bypass valve (61), a sealing groove (63) with an inner groove is formed in the joint of the bypass valve (61) and the air guide cylinder (62), and a sealing piece (64) is arranged in the sealing groove (63);
A driving cylinder (65) is arranged in the middle of the bypass valve (61), a piston rod (66) capable of sliding up and down is arranged at the output end of the driving cylinder (65), and the bottom of the piston rod (66) is connected with a valve plate (67) which presses the sealing groove (63);
the sealing detection mechanism comprises two groups of air pipes (71) penetrating through the sealing groove (63), one air pipe (71) is sequentially provided with a first stop valve (72) and a pressure reducing valve (73) along the air inlet direction, and the other air pipe (71) is sequentially provided with a second stop valve (74) and a pressure gauge (75) along the air outlet direction.
2. The bypass valve sealing performance detection device for the bag-type dust collector according to claim 1, wherein the inner cavity of the upper box body (1) is divided into a dust-air section and a clean-air section by the air duct partition plate (52), and the upper part and the lower part of the filter bag (53) penetrate into the clean-air section and the dust-air section respectively.
3. The bypass valve sealing performance detection device for the bag-type dust collector according to claim 2, wherein the opening end of the air guide cylinder (62) penetrates into the dust-air space partitioned by the air passage partition plate (52).
4. The bypass valve sealing performance detection device for a bag-type dust collector according to claim 1, wherein the sealing member (64) is a hollow rubber member, and the raised edge thereof is attached to the valve plate (67).
5. The bypass valve sealing performance detection device for the bag-type dust collector according to claim 1, wherein a sealing channel closed by the sealing groove (63) and the valve plate (67) is combined with two air pipes (71) to form a detection passage.
6. The bypass valve sealing performance detection device for a bag-type dust collector according to claim 1, wherein an air gap is left between the valve plate (67) and a valve passage of the bypass valve (61).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323029057.8U CN221037901U (en) | 2023-11-08 | 2023-11-08 | Bypass valve sealing performance detection device for bag-type dust collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323029057.8U CN221037901U (en) | 2023-11-08 | 2023-11-08 | Bypass valve sealing performance detection device for bag-type dust collector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221037901U true CN221037901U (en) | 2024-05-28 |
Family
ID=91177109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323029057.8U Active CN221037901U (en) | 2023-11-08 | 2023-11-08 | Bypass valve sealing performance detection device for bag-type dust collector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221037901U (en) |
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2023
- 2023-11-08 CN CN202323029057.8U patent/CN221037901U/en active Active
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