CN113975903A

CN113975903A - Environmental protection equipment filter bag leak detector

Info

Publication number: CN113975903A
Application number: CN202111632997.9A
Authority: CN
Inventors: 关海中; 关建磊; 吴金; 肖少林
Original assignee: Shandong Hailin Environmental Protection Equipment Engineering Co ltd
Current assignee: Shandong Hailin Environmental Protection Equipment Engineering Co ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-01-28

Abstract

The invention discloses a leak detector for a filter bag of environmental protection equipment, which relates to the technical field of dust removal equipment and comprises a main frame mechanism, a light sensation mechanism, a display mechanism and a sealing mechanism. The supporting net is fixedly arranged on the fixing ring, the bottom of the supporting net is fixedly provided with light guide fibers, and the filter bag is arranged outside the supporting net; the adjusting cylinder is slidably mounted on a support ring of the fixing ring, a ring support is fixedly mounted inside the support ring, the ring support is fixedly mounted outside the fixing ring, canvas is slidably mounted on the ring support, and the canvas is in an open state when the filter bag is used for filtering; the light sensing mechanism is arranged in the sealing mechanism, the fixed disc is fixedly arranged in the support ring, the laser emitter is rotatably arranged at the output ends of the four cylinders at the bottom of the fixed disc, and the cylinders drive the light of the laser emitter to vertically inject into the optical fiber; the cylinder is fixedly installed above the support ring, the filter screen disc is rotatably installed on the cylinder, when the filter screen is broken and leaked, the filter screen disc is parallel to the end face of the cylinder, and the quantity of the impurities on the filter screen disc reflects the size of the leak.

Description

Environmental protection equipment filter bag leak detector

Technical Field

The invention relates to the technical field of dust removing equipment, in particular to a filter bag leak detector of environmental protection equipment.

Background

In a bag-type duster apparatus, the filter bag is the heart of the duster, which has a great influence on its performance, so that it should be checked frequently. Sometimes, the new filter bag is damaged, burnt, corroded and the like after running in the dust remover. Experience has shown that filter bag servicing work is the largest part of bag house maintenance management. For the failure of the filter bag, the commonly used detection method is complicated and depends on the rich experience of maintenance workers. The condition of the filter bag in operation can be reflected by the reading and the change of the differential pressure meter, and for a large-scale bag type dust collector, the resistance value is recorded every day, and the damage, the deterioration and the blockage of the filter bag are analyzed and checked in time. The condition of the smoke dust at the exhaust port is observed by naked eyes, and if the exhaust smoke dust can be seen from the exhaust port, the filter bag is damaged. In order to determine the damage position, the ash removal operation needs to be manually operated and switched chamber by chamber, a valve is closed chamber by chamber, an exhaust port is observed, once the chamber filtration with the damaged filter bag stops, the smoke and dust are not discharged outwards, and only which chamber has the damaged filter bag can be judged by the method. The maintenance inspection during the shutdown is mainly to observe the wear degree of the filter bag by naked eyes, and see whether the conditions such as deterioration, damage, aging, perforation and the like exist; observing the dust deposition condition of the non-filtering surface of the filter bag by experience; checking whether the filter bags rub or collide with each other; and (5) checking whether the filter bag or the dust is wet or drenched to cause the bonding condition. This completely manual detection method is time consuming and requires high maintenance personnel.

Publication No. CN207081519U discloses a leak detection device for a dust removal filter bag, which comprises a circular tube type shell; a motor is arranged in the shell; the rotating shaft of the motor is provided with a rotating blade; a protective net is arranged on the right side of the rotating blade in the shell; the upper end of the shell is provided with a handle and a containing buckle A, and the lower end of the shell is provided with a supporting seat; the right end of the shell is hermetically connected with a canvas telescopic hose; the left end of the canvas flexible hose is of a conical structure, and a closing-up structure is arranged at the lower end port; a receiving buckle B is arranged on the outer side of the closing structure; a dust detector is arranged on the canvas flexible pipe; the electrostatic probe of the dust detector is arranged inside the canvas flexible pipe; the device can accurately find out whether the filter bag is damaged.

Although the technical problem of low detection efficiency is solved and the labor force is reduced in the prior art, one check is needed, which is not only troublesome, but also can not directly solve the subsequent work of filter bag breakage, and if the detection is not timely, the air is greatly polluted, so that an environment-friendly device filter bag leak detector is urgently needed.

Disclosure of Invention

Aiming at the technical problems, the technical scheme adopted by the invention is as follows: the utility model provides an environmental protection equipment filter bag leak detector, includes body frame mechanism, light sense mechanism, display mechanism, closing mechanism.

The main frame mechanism comprises a fixing ring and a supporting net, the supporting net is fixedly arranged on the fixing ring, optical fibers are fixed at the bottom of the supporting net, and the filter bag is fixedly arranged outside the supporting net; the sealing mechanism comprises a support ring and an adjusting cylinder, the support ring is fixedly arranged on a fixing ring, the adjusting cylinder is slidably arranged on the support ring, a ring support is fixedly arranged in the support ring, the ring support is fixedly arranged outside the fixing ring, canvas is slidably arranged on the ring support, and the canvas is in an open state by the adjusting cylinder when a filter bag is used for filtering; the light sensing mechanism is arranged inside the sealing mechanism and comprises a fixed disk and a laser emitter, the fixed disk is fixedly arranged inside the support ring, four air cylinders are rotatably arranged at the bottom of the fixed disk, the laser emitter is rotatably arranged at the output ends of the four air cylinders, and the air cylinders drive light rays of the laser emitter to vertically irradiate into the optical fiber; the display mechanism is arranged above the closing mechanism and comprises a cylinder and a filter screen disc, the cylinder is fixedly arranged above the support ring, the filter screen disc is rotatably arranged on the cylinder, when the filter screen is broken, the filter screen disc is parallel to the end face of the cylinder, and the quantity of sundries on the filter screen disc reflects the size of a leak.

Further, body frame mechanism still includes light screen, clearance ring, and the light screen has a plurality ofly, and the crisscross fixed mounting of a plurality of light screens is on solid fixed ring, and clearance ring slidable mounting is provided with a plurality of photosensitive sensor on the light screen. The light screen carries out the shading to the light that laser emitter gived off, when changing the filter bag, washs solid fixed ring, and when the filter bag was damaged, dust got into solid fixed ring, and light-sensitive sensor experienced the light, gave display mechanism with information transfer.

Further, the closing mechanism still includes closed cylinder, slide bar, and closed cylinder fixed mounting is on the support ring, adjusts a section of thick bamboo fixed mounting and at closed cylinder's output, and the slide bar has a plurality ofly, and the first end fixed mounting of slide bar is on the canvas, and the slide bar second end is provided with reset spring, and reset spring sets up in ring carrier below. When the closed cylinder extends, the adjusting cylinder pushes the canvas to expand, the sliding rod moves towards the direction of the closed cylinder on the ring support, the return spring compresses, and the filter bag filters the gas with impurities; when the closed cylinder contracts, the adjusting cylinder moves towards the closed cylinder, the reset spring extends, the sliding rod moves towards the opposite direction of the closed cylinder on the ring support, the canvas is closed, and the filter bag does not filter gas any more.

Further, light sense mechanism still includes dust hood, stabilizing spring, and the dust hood setting is outside at the fixed disk, and dust hood fixed mounting is on the fixed disk, and stabilizing spring sets up between fixed disk and laser emitter, and the first end fixed mounting of stabilizing spring is on the fixed disk, and the second end fixed mounting of stabilizing spring is on laser emitter. The cylinder drives the laser emitter to swing, and the stabilizing spring enables the laser emitter to swing more stably.

Furthermore, the light sensation mechanism also comprises a photoresistor, the photoresistor is fixedly arranged at the bottom of the optical fiber, and the photoresistor is electrically connected with the optical fiber. When the light of the laser emitter vertically irradiates the optical fiber, the photoresistor changes to reflect the integrity of the filter bag.

Furthermore, a round hole is formed in the bottom of the dust separation cover. The light of the laser emitter is emitted out of the dust shield through the round hole.

Further, display mechanism still includes adjustment cylinder, bull stick, and adjustment cylinder rotates and installs outside the drum, and the first end of bull stick rotates and installs the output at adjustment cylinder, and the bull stick second end rotates and installs outside the drum, and filter screen dish fixed mounting is held at the bull stick second. The telescopic driving rotating rod of the adjusting cylinder rotates outside the cylinder, and the rotating rod drives the filter screen disc to rotate when rotating.

Furthermore, the display mechanism further comprises two groups of limiting blocks, the distance between the two limiting blocks and the second end of the rotating rod is equal, and the two limiting blocks limit the swinging angle of the rotating rod to be 90 degrees. The rotating rod swings to drive the filter screen disc to rotate, so that the rotation angle of the filter screen disc is 90 degrees.

Compared with the prior art, the invention has the beneficial effects that: (1) dust is irradiated by laser, light scattering is received by a photosensitive sensor, and damage of the leakage net is found in time; (2) when the filter bag is replaced, the cleaning ring cleans the fixing ring, so that the cleanness of the fixing ring is ensured; (3) the optical fiber and the photoresistor are assisted to visually judge the integrity of the filter bag, so that the damaged filter bag is prevented from being installed; (4) the quantity of sundries on the filter screen disc directly reflects the leakage degree of the filter bag; (5) the environmental protection equipment is provided with a plurality of filter bags, and the sealing mechanism directly seals the leaked filter bags when the leakage degree of the filter bags is large, so that unfiltered gas is prevented from leaking.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

FIG. 2 is a schematic view of the overall structure of the present invention in half section.

Fig. 3 is a schematic view of a main frame mechanism of the present invention.

FIG. 4 is a schematic view of a cleaning ring of the present invention.

Fig. 5 is a schematic view of a photosensor according to the present invention.

FIG. 6 is a schematic view of a light-sensing mechanism according to the present invention.

Fig. 7 is a partially enlarged schematic view of C of fig. 1.

Fig. 8 is a schematic illustration of the position of the cylinder and the filter screen discs according to the invention.

FIG. 9 is a schematic view of a portion of the display mechanism of the present invention.

Fig. 10 is a partially enlarged schematic view of B of fig. 3.

Fig. 11 is a partially enlarged schematic view of a in fig. 2.

Fig. 12 is a partially enlarged schematic view of D of fig. 4.

Reference numerals: 1-a main frame mechanism; 101-a supporting net; 102-a shutter plate; 103-cleaning ring; 104-a fixed ring; 105-a photosensitive sensor; 2-a light-sensing mechanism; 201-dust isolation hood; 202-fixing the disc; 203-air cylinder; 204-a stabilizing spring; 205-a laser transmitter; 206-optical fiber; 207-a photoresistor; 3-a display mechanism; 301-a cylinder; 302-a filter screen disc; 303-adjusting the cylinder; 304-a turn bar; 305-a limiting block; 4-a closure mechanism; 401-support ring; 402-a closed cylinder; 403-a conditioning cylinder; 404-canvas; 405-a sliding bar; 406-a return spring; 407-Ring scaffold.

Detailed Description

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

Example (b): the leak detector for the filter bag of the environmental protection equipment, as shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9, fig. 10, fig. 11 and fig. 12, comprises a main frame mechanism 1, a light sensing mechanism 2, a display mechanism 3 and a closing mechanism 4.

As shown in fig. 3, 4, 5, the main frame mechanism 1, the supporting net 101 is fixedly mounted on the fixing ring 104, the filter bag is fixedly mounted outside the supporting net 101, the light shielding plates 102 are multiple, the light shielding plates 102 are fixedly mounted on the fixing ring 104 in a staggered manner, the cleaning ring 103 is slidably mounted on the light shielding plates 102, the light shielding plates 102 are provided with a plurality of photosensitive sensors 105, the photosensitive sensors 105 sense light rays and can change, and when the filter bag is replaced, the cleaning ring 103 cleans the fixing ring 104.

As shown in fig. 10, 11, and 12, in the sealing mechanism 4, a supporting ring 401 is fixedly mounted on the fixing ring 104, a sealing cylinder 402 is fixedly mounted on the supporting ring 401, an adjusting cylinder 403 is fixedly mounted at an output end of the sealing cylinder 402, the adjusting cylinder 403 is slidably mounted on the supporting ring 401, and the sealing cylinder 402 drives the adjusting cylinder 403 to slide on the supporting ring 401; the adjusting cylinder 403 is arranged above the canvas 404 in a sliding mode, the ring support 407 is fixedly mounted at the bottom of the support ring 401, the ring support 407 is fixedly mounted outside the fixing ring 104, the canvas 404 is mounted on the ring support 407 in a sliding mode, when the filter bag is used for filtering, the adjusting cylinder 403 enables the canvas 404 to be in an open state, and after the filter bag is damaged, the canvas 404 is closed.

A plurality of sliding rods 405 are provided, the first end of each sliding rod 405 is fixedly arranged on the canvas 404, the second end of each sliding rod 405 is provided with a return spring 406, the return springs 406 are arranged below the ring supports 407, when the closed air cylinder 402 extends, the adjusting cylinders 403 push the canvas 404 to expand, the sliding rods 405 move towards the closed air cylinder 402 on the ring supports 407, the return springs 406 compress, and the filter bags filter the gas with impurities; when the closed cylinder 402 contracts, the adjusting cylinder 403 moves towards the closed cylinder 402, the return spring 406 extends, the sliding rod 405 moves towards the opposite direction of the closed cylinder 402 on the ring support 407, the canvas 404 is closed, and the filter bag does not filter gas any more.

As shown in fig. 6 and 7, the light sensing mechanism 2 is arranged inside the closing mechanism 4, the fixed disk 202 is fixedly installed inside the supporting ring 401, the dust-proof cover 201 is arranged outside the fixed disk 202, the dust-proof cover 201 is fixedly installed on the fixed disk 202, the number of the cylinders 203 is four, the four cylinders 203 are rotatably installed at the bottom of the fixed disk 202, the laser emitter 205 is rotatably installed at the output end of the four cylinders 203, and the cylinders 203 drive the laser emitter 205 to swing; the bottom of the dust hood 201 is provided with a round hole, light of the laser emitter 205 is emitted out of the dust hood 201 through the round hole, the stabilizing spring 204 is arranged between the fixed disc 202 and the laser emitter 205, the first end of the stabilizing spring 204 is fixedly arranged on the fixed disc 202, the second end of the stabilizing spring 204 is fixedly arranged on the laser emitter 205, and the stabilizing spring 204 enables the laser emitter 205 to swing more stably; the photoresistor 207 is fixedly arranged at the bottom of the optical fiber 206, the photoresistor 207 is electrically connected with the optical fiber 206, and when light rays of the laser emitter 205 vertically irradiate the optical fiber 206, the photoresistor 207 changes to reflect the integrity of the filter bag.

As shown in fig. 8 and 9, in the display mechanism 3, a cylinder 301 is fixedly arranged above a support ring 401, a filter screen disc 302 is rotatably arranged on the cylinder 301, and in an initial state, the end surface of the filter screen disc 302 is perpendicular to the end surface of the cylinder 301; the adjusting cylinder 303 is rotatably mounted outside the cylinder 301, the first end of the rotating rod 304 is rotatably mounted at the output end of the adjusting cylinder 303, the second end of the rotating rod 304 is rotatably mounted outside the cylinder 301, the filter screen disc 302 is fixedly mounted at the second end of the rotating rod 304, the rotating rod 304 is driven to rotate outside the cylinder 301 by the telescopic driving of the adjusting cylinder 303, and the filter screen disc 302 is driven to rotate when the rotating rod 304 rotates; the stopper 305 is total two sets ofly, two stopper 305 and the distance of bull stick 304 second end equal, two stopper 305 restriction bull stick 304's swing angle is 90 degrees, the swing of bull stick 304 drives filter screen dish 302 and rotates, the turned angle that makes filter screen dish 302 is 90 degrees, when the filter screen leaks, filter screen dish 302 is parallel with drum 301's terminal surface, the filter bag is no longer gaseous, then debris on the gas fall on filter screen dish 302, debris quantity reaction leak size on the filter screen dish 302.

The working principle is as follows: fixing ring 104 fixed mounting is in the gas outlet department of environmental protection equipment, with filter bag fixed mounting outside supporting network 101, the air current direction is from the extroversion to the inside flow, flow to light screen 102 from the filter bag promptly, laser emitter 205 jets out light, start cylinder 203, cylinder 203 drives laser emitter 205 swing, laser emitter 205's light is through the round hole that separates dust hood 201 bottom, when shining on optical fiber 206 perpendicularly, photo resistance 207 changes, the integrality of reaction filter bag, be initial state this moment, the terminal surface of filter screen dish 302 is perpendicular with the terminal surface of drum 301.

When the filter bag is damaged, the damaged part can not continuously filter the impurities in the gas, the impurities enter the space formed by the plurality of light shielding plates 102, at this time, due to the Tyndall effect, light rays are scattered, the photosensitive sensor 105 receives a light signal, the photosensitive resistor 207 changes, that is, the filter bag is damaged, which indicates that dust enters, the photosensitive sensor 105 transmits the signal to the adjusting cylinder 303, the adjusting cylinder 303 receives the signal, the rotating rod 304 is driven to rotate, the rotating rod 304 drives the filter screen disc 302 to rotate, the rotating angle of the filter screen disc 302 is 90 degrees under the limitation of the limiting block 305, the filter screen disc 302 is parallel to the end surface of the cylinder 301, because the filter bag does not filter the gas any more, the impurities in the gas fall on the filter screen disc 302, when the impurities in the filter screen disc 302 are too much, the damage of the filter bag is large, at this time, the closed cylinder 402 contracts, the adjusting cylinder 403 moves towards the closed cylinder 402, the return spring 406 is extended and the sliding rod 405 moves on the ring support 407 in the opposite direction to the closed cylinder 402, the sailcloth 404 closes and the filter bag no longer filters the gas.

Waiting for the maintenance personnel to change the broken filter bag, when changing the filter bag, the cleaning ring 103 cleans the fixing ring 104.

The present invention is not limited to the above-described embodiments, and those skilled in the art will be able to make various modifications without creative efforts from the above-described conception and fall within the scope of the present invention.

Claims

1. A leak detector for filter bags of environmental protection equipment comprises a main frame mechanism (1), a light sensing mechanism (2), a display mechanism (3) and a sealing mechanism (4); the method is characterized in that: the main frame mechanism (1) comprises a fixing ring (104) and a supporting net (101), the supporting net (101) is fixedly arranged on the fixing ring (104), optical fibers (206) are fixed at the bottom of the supporting net (101), and filter bags are fixedly arranged outside the supporting net (101); the sealing mechanism (4) comprises a supporting ring (401) and an adjusting cylinder (403), the supporting ring (401) is fixedly installed on the fixing ring (104), the adjusting cylinder (403) is installed on the supporting ring (401) in a sliding mode, a ring support (407) is fixedly installed inside the supporting ring (401), the ring support (407) is fixedly installed outside the fixing ring (104), a canvas (404) is installed on the ring support (407) in a sliding mode, and when the filter bag is filtered, the canvas (404) is in an open state due to the adjusting cylinder (403); the light sensing mechanism (2) is arranged inside the sealing mechanism (4), the light sensing mechanism (2) comprises a fixed disc (202) and a laser emitter (205), the fixed disc (202) is fixedly arranged inside the support ring (401), four air cylinders (203) are rotatably arranged at the bottom of the fixed disc (202), the laser emitter (205) is rotatably arranged at the output ends of the four air cylinders (203), and light rays of the laser emitter (205) are driven by the air cylinders (203) to vertically irradiate into the optical fiber (206); display mechanism (3) sets up the top at closing mechanism (4), display mechanism (3) are including drum (301), filter screen dish (302), and drum (301) fixed mounting is in support ring (401) top, and filter screen dish (302) rotate to be installed on drum (301), and when the filter screen broke, filter screen dish (302) are parallel with the terminal surface of drum (301), debris quantity reaction leak size on filter screen dish (302).

2. The leak detector for the filter bag of the environmental protection equipment as claimed in claim 1, wherein: the main frame mechanism (1) further comprises a plurality of light shading plates (102) and cleaning rings (103), wherein the light shading plates (102) are fixedly mounted on the fixing rings (104) in a staggered mode, the cleaning rings (103) are slidably mounted on the light shading plates (102), and the light shading plates (102) are provided with a plurality of photosensitive sensors (105).

3. The leak detector for the filter bag of the environmental protection equipment as claimed in claim 2, wherein: the sealing mechanism (4) further comprises a sealing cylinder (402) and a sliding rod (405), the sealing cylinder (402) is fixedly mounted on the support ring (401), the adjusting cylinder (403) is fixedly mounted at the output end of the sealing cylinder (402), the sliding rod (405) is multiple, the first end of the sliding rod (405) is fixedly mounted on the canvas (404), the second end of the sliding rod (405) is provided with a reset spring (406), and the reset spring (406) is arranged below the ring support (407).

4. The leak detector for the filter bag of the environmental protection equipment as claimed in claim 3, wherein: light sense mechanism (2) still include dust hood (201), stabilizing spring (204), and dust hood (201) sets up in fixed disk (202) outside, and dust hood (201) fixed mounting is on fixed disk (202), and stabilizing spring (204) set up between fixed disk (202) and laser emitter (205), and the first end fixed mounting of stabilizing spring (204) is on fixed disk (202), and stabilizing spring (204) second end fixed mounting is on laser emitter (205).

5. The leak detector for the filter bag of the environmental protection equipment as claimed in claim 4, wherein: the light sensing mechanism (2) further comprises a photoresistor (207), the photoresistor (207) is fixedly installed at the bottom of the optical fiber (206), and the photoresistor (207) is electrically connected with the optical fiber (206).

6. The leak detector for the filter bag of the environmental protection equipment as claimed in claim 5, wherein: the bottom of the dust separation cover (201) is provided with a round hole.

7. The leak detector for the filter bag of the environmental protection equipment as claimed in claim 6, wherein: display mechanism (3) still include adjustment cylinder (303), bull stick (304), and adjustment cylinder (303) rotate and install in drum (301) outside, and the first end of bull stick (304) is rotated and is installed the output at adjustment cylinder (303), and bull stick (304) second end is rotated and is installed in drum (301) outside, and filter screen dish (302) fixed mounting is held at bull stick (304) second.

8. The leak detector for the filter bag of the environmental protection equipment as claimed in claim 7, wherein: the display mechanism (3) further comprises two groups of limiting blocks (305), the distance between the two limiting blocks (305) and the second end of the rotating rod (304) is equal, and the two limiting blocks (305) limit the swinging angle of the rotating rod (304) to be 90 degrees.