Low-pressure pulse bag-type dust collector

Abstract

The utility model relates to the technical field of bag-type dust removers, in particular to a low-pressure pulse bag-type dust remover, which comprises a dust removal box, a sealing cover arranged at the top of the dust removal box, an electromagnetic pulse valve box arranged at the right end of the sealing cover, a fan arranged at the left end of the sealing cover and connected with a connecting pipe in the electromagnetic pulse valve box through a connecting pipe. A shielding and supporting device is arranged at the position, close to the bottom, of the left end of the dust removal box, a guide hopper communicated with the interior is arranged at the bottom of the dust removal box, and a dust collecting assembly is arranged below the guide hopper. According to the low-pressure pulse bag-type dust collector, an air inlet pipe with a one-way valve is fixedly combined with a dust collection box with a discharge pipe, a positioning plate with a plurality of cloth bags is matched with a positioning groove in an inserted mode, spray pipes in the cloth bags penetrate out of the tops and extend into a sealing cover, and the tops of the spray pipes are connected to connecting pipes in a corresponding draught fan and electromagnetic pulse valve box in an inserted mode. And the fan performs low-pressure pulse on the spray pipe in a specified time period to blow compressed air, so that cloth bag dust removal cooperation is realized.

Description

A low-pressure pulse bag filter Technical Field

[0001] This utility model relates to the technical field of baghouse dust collectors, specifically a low-pressure pulse baghouse dust collector. Background Technology

[0002] Low-pressure pulse jet baghouse dust collector is a high-efficiency and environmentally friendly industrial dust removal equipment, mainly used to treat dust particles in industrial waste gas. Its core working principle is to capture dust through bag filtration technology and use a low-pressure pulse jet cleaning system to periodically remove the dust accumulated on the filter bags, thereby maintaining the high-efficiency operation of the equipment.

[0003] Utility model CN220003357U discloses a low-pressure pulse bag dust collector, including a dust collection assembly. The dust collection assembly includes a dust collection box, a fan, a top cover, an electromagnetic pulse valve box, and a dust hopper. It also includes a slide assembly and an angle adjustment assembly. The bottom of the dust hopper is provided with a discharge port, the slide assembly is installed at the discharge port, and the angle adjustment assembly is installed at the bottom of the slide assembly. When the dust collector is in use, when the dust is discharged through the dust hopper, it will fall directly to the ground or into the collection box. During the dust's fall, it is easy to disperse, affecting collection and causing air pollution, thus affecting the convenience and practicality of the dust collector.

[0004] The above-mentioned technical solution, by setting a sliding structure at the bottom of the dust hopper, allows dust to slide down through the sliding structure when it falls for collection, avoiding direct drop and thus reducing dust generation. This facilitates collection and treatment while reducing air pollution, resulting in better collection and utilization. However, the dust collector has a simple structure when filtering air, and the filtration time inside the dust collection box is short. Air mixed with large and small dust particles enters the interior and clogs the single filter structure, affecting the filtration effect per pass. It requires continuous low-pressure pulse cleaning of the filter bags for filtration and dust removal, increasing energy consumption and reducing dust removal efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide a low-pressure pulse bag filter to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A low-pressure pulse bag filter dust collector includes a dust collection box, a sealing cover on the top of the dust collection box, an electromagnetic pulse valve box on the right end of the sealing cover, a fan on the left end of the sealing cover, the fan being connected to a connecting pipe in the electromagnetic pulse valve box via a connecting pipe, a positioning groove in the middle of the top of the dust collection box, a filter bag assembly in the middle of the positioning groove, a shielding device near the bottom of the left end of the dust collection box, a guide hopper communicating with the interior at the bottom of the dust collection box, and a dust collection assembly below the guide hopper.

[0008] The filter bag assembly includes a positioning plate and a plurality of filter bags disposed between the positioning plates. The center of each filter bag is hollow and has a spray pipe inside. The top of the spray pipe extends out of the filter bag and into the connecting pipe corresponding to the electromagnetic pulse valve box on the sealing cover.

[0009] The shielding device includes a fixed plate and an electric push rod connected to the left end of the fixed plate. The telescopic arm of the electric push rod extends into the interior of the fixed plate, and a sealing plate is provided inside the fixed plate. One end of the sealing plate protrudes from the fixed plate and is inserted into the space of the inner wall of the dust collection box.

[0010] The dust collection assembly includes a collection box and a drawer that is inserted into the bottom of the collection box. The top of the collection box is tightly fitted to the bottom of the guide hopper, and the guide hopper extends into the interior of the collection box. A slot is provided on the front surface of the collection box, and the drawer is inserted into the slot. A transparent window is provided near the top of the front surface of the collection box, and an exhaust pipe is also provided near the transparent window on the front surface of the collection box.

[0011] Furthermore, the lower surface of the dust collector is provided with support legs near the four corners, and the top of each support leg is welded and fixed to the outer wall of the dust collector. The left end face of the dust collector is provided with an air inlet pipe that communicates with the interior, and the air inlet pipe is provided with a one-way valve.

[0012] In this invention, the entire structure is supported by four supporting legs. With the air inlet pipe equipped with a one-way valve, the air that needs to be filtered and dusted enters the dust collection box from the left end of the air inlet pipe through the one-way valve. The one-way valve prevents the air from flowing back.

[0013] Specifically, the dust collector has an exhaust pipe connected to the interior on the right end face, and a butterfly valve is installed on the exhaust pipe. The exhaust pipe and the air inlet pipe are both welded and fixed to the dust collector.

[0014] In this invention, with the discharge pipe equipped with a butterfly valve, the butterfly valve opens to facilitate the discharge of air filtered by the dust collector, and the butterfly valve closes to facilitate low-pressure pulse dust removal operation inside, reducing the impact of internal air leakage on dust removal.

[0015] It should be noted that a sealing strip is provided on the lower surface of the sealing cover near the outer edge, a sealing groove is provided on the top of the dust collector corresponding to the sealing strip, and a locking block is provided on the outer wall of the sealing cover near the four corners. A through hole is provided on each locking block, and a fixing bolt is provided in the through hole. A screw hole is provided on the outer wall of the dust collector corresponding to the fixing bolt.

[0016] In this invention, the top of the sealing strip is bonded and fixed to the bottom of the sealing cover, and the sealing strip is inserted into the sealing groove to increase the sealing performance of the sealing cover and the dust collector assembly. The fixing bolt passes through the through hole and is threadedly connected to the corresponding screw hole to fix the position of the sealing cover and the dust collector.

[0017] Furthermore, the top of the sealing cover has an annular groove, and a side cover is provided in the annular groove. The four corners of the side cover are all connected to the sealing cover by screws. The electromagnetic pulse valve box is fixedly connected to the sealing cover. The fan is fixedly connected to the sealing cover by screws. The electromagnetic pulse valve box and the fan are connected by a connecting pipe. The top of the nozzle is fixedly connected to the corresponding connecting pipe by screws.

[0018] In this invention, the side cover facilitates manual removal of the screws. Once the side cover is opened, the connecting pipe and spray pipe, which have grooves at the bottom of the annular groove, are inserted and installed, and then fixed in place by the screws. The fan is connected to an external power source and operates in conjunction with an electromagnetic pulse valve box. The electromagnetic pulse valve box contains an electromagnetic pulse valve, and the electromagnetic pulse valve is connected to a controller. The controller is set to start at a fixed time interval. When the set time is reached, the controller initiates the dust removal program, the electromagnetic pulse valve opens rapidly, and compressed air enters the connecting pipe and then the spray pipe, forming a high-speed airflow that impacts the filter bag, thus achieving the dust removal operation.

[0019] It is worth noting that the right end of the fixing plate is welded and fixed to the left end of the dust collector, and the interior of the fixing plate is connected to the interior space of the dust collector. The electric push rod is fixedly connected to the fixing plate by screws. The sealing plate is slidably inserted into the interior space of the fixing plate, and the width of the outer wall of the sealing plate is adapted to the width of the inner wall of the dust collector.

[0020] In this invention, the electric push rod is connected to an external power source, and the telescopic arm extends to push the sealing plate from inside the fixed plate into the dust collector. The right end face of the sealing plate is tightly fitted with the right side of the inner wall of the dust collector, and the front and rear faces of the sealing plate are tightly fitted with the corresponding inner wall faces of the dust collector. The sealing plate seals the bottom of the dust collector, which helps with air dust filtration. The air leakage from the gap when the sealing plate is tightly fitted with the dust collector is very small compared to the air filtered by the filter bags, and the leakage does not affect the air dust filtration. The telescopic arm of the electric push rod shortens, allowing the sealing plate to enter the fixed plate from the dust collector. The dust blown out by the low-pressure pulse of the filter bags falls naturally into the bottom of the dust collector under the action of gravity.

[0021] Furthermore, the top of the guide hopper is welded and fixed to the bottom of the dust collection box, the top of the collection box is welded and fixed to the middle of the outer wall of the guide hopper, and the bottom of the guide hopper is near the top of the drawer.

[0022] In this invention, with the help of the guide bucket, the dust falling from the bottom of the dust collector box under the action of gravity is guided into the drawer in the collection box for convenient centralized collection and discharge.

[0023] Specifically, the width of the drawer's outer wall is adapted to the width of the slot's inner wall, a pull handle is provided on the drawer's outer wall, the four sides of the transparent window are bonded and fixed to the side wall of the collection box, and the exhaust pipe is welded and fixed to the collection box.

[0024] In this invention, the transparent window is made of tempered glass, which allows outsiders to observe the dust collection inside. The pull handle facilitates the pushing and pulling of the drawer for taking out or placing items. The exhaust pipe helps to vent air from the inside of the collection box, allowing dust inside the dust collection box to fall vertically.

[0025] In addition, the width of the outer wall of the positioning plate is adapted to the width between the two positioning grooves, the cloth bags are evenly distributed, and the cloth bags are fixedly connected to the positioning plate by screws. The aperture of the cloth bag decreases from left to right on the panel. Each spray pipe is provided with a branch pipe, which is evenly distributed. The branch pipe and the spray pipe are integrally formed. Each branch pipe is provided with several nozzles, which are evenly distributed in a ring. The spray pipe is engaged with the top of the cloth bag by a gasket.

[0026] In this invention, four filter bags work together, with the filter bag pores decreasing in size from left to right, filtering particles from large to small in sequence. This reduces the clogging of the filter bag mesh by uneven particle size, which would affect the low-pressure pulse dust removal. Each filter bag is equipped with multiple branch pipes, and with the help of nozzles, the filter bag is flushed from the inside out to remove dust particles attached to it, making it convenient for the next air filtration.

[0027] Compared with the prior art, the beneficial effects of this utility model are:

[0028] 1. This utility model combines and fixes an air inlet pipe with a one-way valve and a dust collector box with an exhaust pipe. A positioning plate with multiple filter bags is inserted into a positioning slot. The nozzle in the filter bag extends from the top into the sealing cover. The top of the nozzle is inserted into the connecting pipe between the corresponding fan and the electromagnetic pulse valve box. This enables the fan to blow compressed air into the nozzle with low-pressure pulses during a specified time period, thereby achieving dust collection with the filter bag.

[0029] 2. This utility model, by setting up a dust collection component, collects dust particles falling from the bottom guide hopper of the dust collector in cooperation with the drawer and the collection box. The shielding device, in cooperation with the electric push rod and the fixed plate, adjusts the sealing plate to move from the fixed plate into the dust collector. When filtering dust from the air, the sealing plate is located inside the dust collector. When it is necessary to clean dust particles from the filter bag, the sealing plate is located inside the fixed plate. The sealing cover, in cooperation with the sealing strip, increases the sealing performance with the dust collector. Attached Figure Description

[0030] Figure 1 is a schematic diagram of the overall structure of this utility model;

[0031] Figure 2 is a schematic diagram of the side cover of this utility model in the open state;

[0032] Figure 3 is a schematic diagram of the structure of this utility model showing the dust removal box and drawer separated.

[0033] Figure 4 is a schematic diagram of the sealing cap structure of this utility model;

[0034] Figure 5 is a schematic cross-sectional view of the filter bag assembly of this utility model.

[0035] Figure 6 is a schematic cross-sectional view of the dust collector box of this utility model;

[0036] Figure 7 is a schematic cross-sectional view of the overall dust collection state of this utility model.

[0037] The meanings of the labels in the diagram are as follows:

[0038] 1. Dust collector; 10. Guide hopper; 11. Positioning groove; 12. Sealing groove; 13. Screw hole; 14. Air inlet pipe; 140. One-way valve; 15. Discharge pipe; 150. Butterfly valve;

[0039] 2. Sealing cover; 20. Annular groove; 200. Side cover; 21. Electromagnetic pulse valve box; 22. Fan; 23. Clamping block; 230. Perforation; 231. Fixing bolt; 24. Sealing strip;

[0040] 3. Ash collection assembly; 30. Collection box; 300. Slot; 301. Transparent window; 302. Exhaust pipe; 31. Drawer;

[0041] 4. Covering device; 40. Fixing plate; 41. Electric push rod; 42. Sealing plate;

[0042] 5. Filter bag assembly; 50. Positioning plate; 51. Filter bag; 52. Spray pipe; 520. Branch pipe; 521. Nozzle. Detailed Implementation

[0043] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0044] Please refer to Figures 1-7. This embodiment provides a technical solution:

[0045] A low-pressure pulse bag dust collector includes a dust collection box 1. Support legs are provided on the lower surface of the dust collection box 1 near the four corners. The tops of the support legs are welded and fixed to the outer wall of the dust collection box 1. An air inlet pipe 14 communicating with the interior is provided on the left end face of the dust collection box 1. A one-way valve 140 is provided on the air inlet pipe 14.

[0046] In this utility model, the whole is supported by four supporting legs. With the cooperation of the air inlet pipe 14 with one-way valve 140, the air that needs to be filtered and dusted enters the dust collection box 1 from the left end of the air inlet pipe 14 through the one-way valve 140. The one-way valve 140 prevents the air from flowing back.

[0047] Furthermore, a discharge pipe 15 communicating with the interior is provided on the right end face of the dust collector 1. A butterfly valve 150 is provided on the discharge pipe 15. The discharge pipe 15 and the air inlet pipe 14 are both welded and fixed to the dust collector 1.

[0048] In this utility model, with the discharge pipe 15 equipped with a butterfly valve 150, when the butterfly valve 150 is open, it helps to discharge the air filtered by the dust collector 1. When the butterfly valve 150 is closed, it helps to perform low-pressure pulse dust removal operation inside, reducing the impact of internal air leakage on the dust removal process.

[0049] Specifically, the dust collector 1 is provided with a sealing cover 2 on the top, and a sealing strip 24 is provided on the lower surface of the sealing cover 2 near the outer edge. A sealing groove 12 is provided on the top of the dust collector 1 corresponding to the sealing strip 24. A locking block 23 is provided on the outer wall of the sealing cover 2 near the four corners. A through hole 230 is provided on the locking block 23, and a fixing bolt 231 is provided in the through hole 230. A screw hole 13 is provided on the outer wall of the dust collector 1 corresponding to the fixing bolt 231.

[0050] In this utility model, the top of the sealing strip 24 is bonded and fixed to the bottom of the sealing cover 2, and the sealing strip 24 is inserted into the sealing groove 12 to increase the sealing performance of the combination of the sealing cover 2 and the dust collector 1. The fixing bolt 231 passes through the through hole 230 and is threadedly connected to the corresponding screw hole 13 to fix the position of the sealing cover 2 and the dust collector 1.

[0051] Furthermore, the right end of the sealing cover 2 is provided with an electromagnetic pulse valve box 21, and the left end of the sealing cover 2 is provided with a fan 22. The fan 22 is connected to the connecting pipe in the electromagnetic pulse valve box 21 through a connecting pipe. The top of the sealing cover 2 is provided with an annular groove 20, and a side cover 200 is provided in the annular groove 20. The four corners of the side cover 200 are all threaded through by screws and connected to the sealing cover 2. The electromagnetic pulse valve box 21 is fixedly connected to the sealing cover 2, and the fan 22 is fixedly connected to the sealing cover 2 by screws. The electromagnetic pulse valve box 21 and the fan 22 are connected by a connecting pipe, and the top of the nozzle 52 is fixedly connected to the corresponding connecting pipe by screws.

[0052] In this invention, the side cover 200 facilitates manual removal of the screws. Once the side cover 200 is opened, the connecting pipe in the groove at the bottom of the annular groove 20 is inserted into the spray pipe 52 for installation, and then fixed in place by the screws. The fan 22 is connected to an external power source and works in conjunction with the electromagnetic pulse valve box 21. The electromagnetic pulse valve box 21 contains an electromagnetic pulse valve, and a controller is attached to the electromagnetic pulse valve. The controller is set to start at a fixed time interval. When the set time is reached, the controller initiates the dust removal program, the electromagnetic pulse valve opens rapidly, and compressed air enters the connecting pipe and then the spray pipe 52, forming a high-speed airflow that impacts the filter bag 51, thus achieving the dust removal operation in the filter bag 51.

[0053] Secondly, a positioning groove 11 is provided in the middle of the top of the dust collector 1, a filter bag assembly 5 is provided in the middle of the positioning groove 11, a shielding device 4 is provided at the left end of the dust collector 1 near the bottom, a guide hopper 10 communicating with the interior is provided at the bottom of the dust collector 1, and a dust collection assembly 3 is provided below the guide hopper 10.

[0054] Specifically, the filter bag assembly 5 includes a positioning plate 50 and a plurality of filter bags 51 disposed between the positioning plate 50. The center of each filter bag 51 is hollow and a nozzle 52 is provided inside. The top of the nozzle 52 passes through the filter bag 51 and extends into the connecting pipe corresponding to the electromagnetic pulse valve box 21 on the sealing cover 2.

[0055] It should be noted that the width of the outer wall of the positioning plate 50 is adapted to the width between the two positioning grooves 11. The cloth bags 51 are evenly distributed and are fixedly connected to the positioning plate 50 by screws. The aperture of the cloth bags 51 decreases from left to right on the panel. Each spray pipe 52 is provided with a branch pipe 520, which is evenly distributed. The branch pipe 520 and the spray pipe 52 are integrally formed. Each branch pipe 520 is provided with several nozzles 521, which are evenly distributed in a ring. The spray pipe 52 is engaged with the top of the cloth bag 51 by a gasket.

[0056] In this invention, four filter bags 51 are used in combination, with the pore size of the filter bags 51 decreasing from left to right. The filter particles are filtered from large to small in sequence, reducing the uneven clogging of the mesh on the filter bags 51 by uneven particle size, which would affect the low-pressure pulse dust removal. Each filter bag 51 is equipped with multiple branch pipes 520, and with the help of nozzles 521, the filter bags 51 are flushed from the inside out to remove the dust particles attached to the filter bags 51, making it convenient for the next air filtration.

[0057] Furthermore, the shielding device 4 includes a fixed plate 40 and an electric push rod 41 connected to the left end of the fixed plate 40. The telescopic arm of the electric push rod 41 extends into the interior of the fixed plate 40, and a sealing plate 42 is provided inside the fixed plate 40. One end of the sealing plate 42 extends out of the fixed plate 40 and is inserted into the inner wall space of the dust collection box 1.

[0058] It is worth noting that the right end of the fixing plate 40 is welded and fixed to the left end of the dust collector 1, and the interior of the fixing plate 40 is connected to the interior space of the dust collector 1. The electric push rod 41 is fixedly connected to the fixing plate 40 by screws. The sealing plate 42 is slidably inserted into the interior space of the fixing plate 40, and the width of the outer wall of the sealing plate 42 is adapted to the width of the inner wall of the dust collector 1.

[0059] In this invention, the electric push rod 41 is connected to an external power source, and the telescopic arm extends to push the sealing plate 42 from inside the fixed plate 40 into the dust collection box 1. The right end face of the sealing plate 42 is tightly fitted with the right side of the inner wall of the dust collection box 1, and the front and rear faces of the sealing plate 42 are tightly fitted with the corresponding inner wall faces of the dust collection box 1. The sealing plate 42 seals the bottom of the dust collection box 1, which helps to filter the air dust. The air leakage from the gap when the sealing plate 42 is tightly fitted with the dust collection box 1 is very small compared to the air filtered by the filter bag 51. The leakage does not affect the air dust filtration. The telescopic arm of the electric push rod 41 shortens, so that the sealing plate 42 enters the fixed plate 40 from the dust collection box 1. The dust blown out by the low-pressure pulse of the filter bag 51 falls naturally into the bottom of the dust collection box 1 under the action of gravity.

[0060] Furthermore, the ash collection component 3 includes a collection box 30 and a drawer 31 that is inserted into the bottom of the collection box 30. The top of the collection box 30 is tightly fitted to the bottom of the guide hopper 10, and the guide hopper 10 extends into the interior of the collection box 30. A slot 300 is provided on the front surface of the collection box 30, and the drawer 31 is inserted into the slot 300. A transparent window 301 is provided on the front surface of the collection box 30 near the top, and an exhaust pipe 302 is also provided on the front surface of the collection box 30 near the transparent window 301.

[0061] Secondly, the top of the guide hopper 10 is welded and fixed to the bottom of the dust collection box 1, the top of the collection box 30 is welded and fixed to the middle of the outer wall of the guide hopper 10, and the bottom of the guide hopper 10 is close to the top of the drawer 31.

[0062] In this invention, with the cooperation of the guide bucket 10, the dust falling from the bottom of the dust collection box 1 under the action of gravity is guided into the drawer 31 in the collection box 30 for convenient centralized collection and discharge.

[0063] In addition, the width of the outer wall of drawer 31 is adapted to the width of the inner wall of slot 300. A pull handle is provided on the outer wall of drawer 31. The four sides of transparent window 301 are glued and fixed to the side wall of collection box 30. Exhaust pipe 302 is welded and fixed to collection box 30.

[0064] In this utility model, the transparent window 301 is made of tempered glass, which makes it convenient for outsiders to observe the dust collection inside through the transparent window 301. With the help of the handle, the drawer 31 can be pushed and pulled out or placed. With the help of the exhaust pipe 302, it helps to exhaust the air inside the collection box 30, so that the dust inside the dust collection box 1 can fall vertically.

[0065] In this embodiment of the low-pressure pulse bag filter, during use, the dust collection box 1 with the guide hopper 10 is first assembled and fixed with the collection box 30. Then, the drawer 31 is inserted and connected to the part with the transparent window 301 and the exhaust pipe 302. Multiple nozzles 52 with branch pipes 520 are respectively assembled and fixed with the corresponding filter bags 51. The filter bags 51 are fixed on the positioning plate 50 from left to right, and the diameter of the filter bags 51 decreases from left to right. The positioning plate 50 is inserted into the positioning groove 11. The top of the nozzle 52 extends into the annular groove 20 on the sealing cover 2. The connecting pipe that passes through the electromagnetic pulse valve box 21 is inserted and matched accordingly, and the end of the connecting pipe is connected to the conveying air pipe of the fan 22. Then, the sealing cover 2 is inserted and matched with the sealing groove 12 on the top of the dust collector box 1 through the sealing strip 24, and the locking block 23 is locked in the top position of the dust collector box 1 in sequence. The fixing bolt 231 passes through the through hole 230 and is threadedly connected to the corresponding screw hole 13 to fix the position of the sealing cover 2 and the dust collector box 1. Finally, the air inlet pipe 14 is connected to the air pipe mixed with dust in the outside, and the exhaust pipe 15 is connected to the conveying pipe.

[0066] When air filtration is required, the electric push rod 41 is connected to an external power source, and the telescopic arm extends to push the sealing plate 42 from inside the fixed plate 40 into the dust collector 1. The right end face of the sealing plate 42 is tightly fitted with the right side of the inner wall of the dust collector 1, and the front and rear faces of the sealing plate 42 are tightly fitted with the corresponding inner wall faces of the dust collector 1. The sealing plate 42 seals the bottom of the dust collector 1, which helps to filter the air. The air leakage from the gap when the sealing plate 42 is tightly fitted with the dust collector 1 is very small compared to the air filtered by the filter bag 51, and the leakage does not affect the air dust filtration.

[0067] First, connect the fan 22 to the external power supply and work with the electromagnetic pulse valve box 21. The electromagnetic pulse valve in the electromagnetic pulse valve box 21 is connected to the controller. The controller is set to a fixed time period and starts once every six hours. Before starting, close the butterfly valve 150. When the set time arrives, the controller starts the dust removal program, the electromagnetic pulse valve opens quickly, compressed air enters the connecting pipe, and then enters the nozzle 52, forming a high-speed airflow that impacts the filter bag 51 to achieve the dust removal operation in the filter bag 51. The cleaned dust particles fall to the bottom of the dust collector 1. The control switch is activated to control the extension arm of the electric push rod 41 to shorten, so that the sealing plate 42 enters the fixed plate 40 from the dust collector 1. The dust blown out by the low-pressure pulse in the filter bag 51 falls naturally to the bottom of the dust collector 1 under the action of gravity.

[0068] When the filter bag assembly 5 needs to be disassembled and replaced, first remove the screws on the side cover 200. After the side cover 200 is opened, it is easy to separate the top of the nozzle 52 from the connecting pipe on the fan 22. Then, remove the fixing bolt 231 and the sealing cover 2. This allows the positioning plate 50 to be removed from the positioning groove 11, and the filter bag 51 can be removed and replaced.

Claims

1. A low-pressure pulse bag filter dust collector, comprising a dust collection box, characterized in that: The dust collector is equipped with a sealing cover on top. An electromagnetic pulse valve box is located at the right end of the sealing cover, and a fan is located at the left end. The fan is connected to a connecting pipe in the electromagnetic pulse valve box via a connecting pipe. A positioning groove is formed in the middle of the top of the dust collector, and a filter bag assembly is located in the middle of the positioning groove. A shielding device is located near the bottom of the left end of the dust collector. A guide hopper communicating with the interior is located at the bottom of the dust collector, and a dust collection assembly is located below the guide hopper. The filter bag assembly includes a positioning plate and multiple filter bags located between the positioning plate. The center of each filter bag is hollow, and a spray pipe is located inside. The top of the spray pipe extends from the filter bag to the electromagnetic pulse valve box on the sealing cover. The connecting pipe corresponding to the flushing valve box includes a shielding device comprising a fixed plate and an electric push rod connected to the left end of the fixed plate. The telescopic arm of the electric push rod extends into the interior of the fixed plate, and a sealing support plate is provided inside the fixed plate. One end of the sealing support plate protrudes from the fixed plate and is inserted into the inner wall space of the dust collector. The dust collection assembly includes a collection box and a drawer inserted into the bottom of the collection box. The top of the collection box is tightly fitted to the bottom of the guide hopper. The guide hopper extends into the interior of the collection box. A slot is provided on the front end face of the collection box. The drawer is inserted into the slot. A transparent window is provided near the top on the front end face of the collection box. An exhaust pipe is also provided near the transparent window on the front end face of the collection box.

2. The low-pressure pulse bag filter dust collector according to claim 1, characterized in that: The dust collector has support legs at the four corners on its lower surface. The tops of the support legs are welded to the outer wall of the dust collector. The left end face of the dust collector has an air inlet pipe that communicates with the interior. The air inlet pipe is equipped with a one-way valve.

3. The low-pressure pulse bag filter according to claim 2, characterized in that: The dust collector is provided with an exhaust pipe that communicates with the interior on the right end face. The exhaust pipe is equipped with a butterfly valve. The exhaust pipe and the air inlet pipe are both welded and fixed to the dust collector.

4. The low-pressure pulse bag filter according to claim 1, characterized in that: A sealing strip is provided on the lower surface of the sealing cover near the outer edge. A sealing groove is provided on the top of the dust collector corresponding to the sealing strip. A locking block is provided on the outer wall of the sealing cover near the four corners. A through hole is provided on each locking block. A fixing bolt is provided in the through hole. A screw hole is provided on the outer wall of the dust collector corresponding to the fixing bolt.

5. The low-pressure pulse bag filter dust collector according to claim 1, characterized in that: The top of the sealing cover has an annular groove, and a side cover is provided in the annular groove. The four corners of the side cover are all threaded through by screws and connected to the sealing cover. The electromagnetic pulse valve box is fixedly connected to the sealing cover. The fan is fixedly connected to the sealing cover by screws. The electromagnetic pulse valve box and the fan are connected by a connecting pipe, and the top of the nozzle is fixedly connected to the corresponding connecting pipe by screws.

6. The low-pressure pulse bag filter according to claim 1, characterized in that: The right end of the fixing plate is welded and fixed to the left end of the dust collector box, and the interior of the fixing plate is connected to the interior space of the dust collector box. The electric push rod is fixedly connected to the fixing plate by screws. The sealing plate is slidably inserted into the interior space of the fixing plate, and the width of the outer wall of the sealing plate is adapted to the width of the inner wall of the dust collector box.

7. The low-pressure pulse bag filter according to claim 1, characterized in that: The top of the guide hopper is welded and fixed to the bottom of the dust collector, the top of the collection box is welded and fixed to the middle of the outer wall of the guide hopper, and the bottom of the guide hopper is near the top of the drawer.

8. The low-pressure pulse bag filter according to claim 7, characterized in that: The width of the drawer's outer wall is adapted to the width of the slot's inner wall. A pull handle is provided on the drawer's outer wall. The four sides of the transparent window are bonded and fixed to the side wall of the collection box. The exhaust pipe is welded and fixed to the collection box.

9. The low-pressure pulse bag filter according to claim 1, characterized in that: The width of the outer wall of the positioning plate is adapted to the width between the two positioning grooves. The cloth bags are evenly distributed and are fixedly connected to the positioning plate by screws. The aperture of the cloth bag decreases from left to right on the panel. Each spray pipe is provided with a branch pipe, which is evenly distributed. The branch pipe and the spray pipe are integrally formed. Each branch pipe is provided with several nozzles, which are evenly distributed in a ring. The spray pipe is engaged with the top of the cloth bag by a gasket.

Images