A new pulse filter element type dust removal tank

Abstract

The present application relates to dust removal equipment technical field, specifically to a new pulse filter element type dust removal tank, including tank body, dust removal filter cartridge and dust removal cloth bag are arranged in the tank body, dust removal cloth bag is arranged several, is located below dust removal filter cartridge, the height of several dust removal cloth bag top gradually reduces from the tank body inner wall to the baffle arrangement, the baffle is located in the tank body, and dust collection cavity is formed between the baffle and the tank body inner wall, dust collection plate is arranged above several dust removal cloth bags, dust collection plate is arranged obliquely, and the top of several dust removal cloth bags is matched, dust inlet pipe is arranged below dust removal cloth bag, dust inlet pipe is connected with separation cover, and the opening of separation cover is downward.The present application adopts the technical scheme of primary cloth bag dust removal+secondary filter cartridge dust removal combination, can form dust concentration gradient, makes the same dust removal device suitable for the requirement of different dust removal emission concentration.

Description

Technical Field

[0001] This invention relates to the field of dust removal equipment technology, and more specifically to a novel pulse filter dust collector. Background Technology

[0002] Processing enterprises generate a lot of dust during the processing and production process. If this dust is directly emitted, it will damage the environment and harm human health. Therefore, it is necessary to filter the dust in the air. Existing technology usually uses filter cartridges or filter bags to filter dust. For example, Chinese patent CN20476847U discloses a cartridge dust collector in the field of dust removal devices, including a dust collection box. The lower side of the dust collection box is provided with a dust collection hopper. The lower side wall of the dust collection box is provided with a dust inlet, and the upper side wall is provided with an air outlet. The dust collection box is provided with a partition plate. A clean air chamber and a dust filtration chamber are formed above and below the partition plate, respectively. Filter cartridges are vertically arranged in the dust filtration chamber. The upper opening of the filter cartridge is connected to the clean air chamber. A guide plate is provided in the dust filtration chamber. A nozzle is provided in the clean air chamber for each filter cartridge. The air jet direction of the nozzle is set one-to-one with the opening of the filter cartridge. The air inlet of the nozzle is connected to the air outlet of the spray bar. The air inlet of the spray bar is connected to the air storage tank through a solenoid valve. The control interface of the solenoid valve is electrically connected to a pulse controller. The structure is compact, easy to clean, has high dust removal efficiency, and is environmentally friendly and clean. It can be used for dust filtration and collection during grain transportation and processing. Industrial filter cartridges and pleated filter bags can significantly increase the filtration area, reduce filtration velocity and resistance, and achieve ultra-low emissions of particulate matter less than 10 mg / m³ or even 5 mg / m³. Baghouse dust collectors typically use needle-punched felt structures and can achieve emissions greater than 10 mg / m³. my country's industrial scale is vast and its processes numerous, with various complex processes and operating conditions, placing high demands on dust collection equipment. Existing dust collection equipment lacks a gradient in dust concentration at the emission outlet, making it impossible for the same dust collection device to meet the requirements of different dust emission concentrations. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and to propose a new type of pulse filter dust collector, whose discharge port can meet the requirements of the same dust collection device for different dust emission concentrations.

[0004] The technical solution adopted by this invention to solve its technical problem is:

[0005] A novel pulse-jet filter dust collector includes a tank body; a dust collector cartridge and dust collector bags are disposed inside the tank body; several dust collector bags are disposed below the dust collector cartridges; the top height of the several dust collector bags gradually decreases from the inner wall of the tank body towards the partition; the partition is located inside the tank body and forms a dust collection chamber with the inner wall of the tank body; a dust collection plate is disposed above the several dust collector bags; the dust collection plate is inclined and matches the top of the several dust collector bags; a dust inlet pipe is disposed below the dust collector bags, and the dust inlet pipe is connected to a separation hood, the separation hood opening downwards. This invention employs a combined primary bag filter and secondary cartridge filter technology, creating a dust concentration gradient that allows the same dust collection device to meet different dust emission concentration requirements. The dust collection plate and chamber in this solution collect the dust generated after primary bag filtration. The invention uses a downward-opening feeding mode, solving the problem of conventional horizontal tangential feed inlets affecting bag filter dust collection. This avoids horizontal tangential airflow, preventing dust from easily adhering to the filter bags and improving the dust collection efficiency and service life of the filter bags.

[0006] Furthermore, a secondary vent is provided on the top of the tank and a primary vent is provided on the side. The primary vent is located above the dust collection chamber and below the dust removal filter cartridge.

[0007] Furthermore, dust concentration testers are installed at the feed inlet, secondary exhaust port, and primary exhaust port of the dust inlet pipe. By detecting the dust concentration at the feed inlet, the dust concentration of the incoming material can be analyzed, warnings can be issued for exceeding the standard, and environmental protection treatment can be carried out on the mixer that meets the dust feed concentration. Several dust concentration testers are connected to the control box, which transmits the dust concentration detection results to the control box, and the control box automatically controls the workflow.

[0008] Furthermore, the dust inlet pipe bends downwards inside the tank and connects to a separation hood at the bottom. The separation hood has a trumpet-shaped structure. This invention employs a downward-bending dust inlet pipe within the tank, coupled with a separation hood, which allows for pre-separation of gas and dust, with the dust falling and the gas rising.

[0009] Furthermore, the dust inlet pipe adopts a large-small head structure at the feed port outside the tank body, which aims to slow down the powder flow rate, increase gravity separation, and more effectively achieve the effect of gas-ash separation.

[0010] Furthermore, the lower end of the dust collection chamber is connected to a dust collection pipe, through which dust is transported to external equipment.

[0011] Furthermore, the top of the dust collector filter cartridge is provided with a perforated plate and a two-stage pulse backflushing assembly; the top of the dust collector bag is provided with a first-stage pulse backflushing assembly.

[0012] Furthermore, the baffle extends downwards to the bottom of the tank. The dust collection chamber is divided into an upper dust collection chamber and a lower dust collection chamber by an inclined metal baffle. A spare hole is provided on the side of the lower dust collection chamber. The high end of the baffle is hinged to the baffle. The bottom of the baffle is supported by a spring, which is always compressed, pressing the baffle upwards to ensure close contact between the lower end of the baffle and the inner wall of the tank. The baffle is also equipped with a magnet for attracting the baffle, which is inclined and cooperates with the downwardly rotated baffle. The above structural design improves the flexibility of dust removal.

[0013] Furthermore, a scraper is slidably mounted on the top surface of the baffle. Pull ropes are fixedly mounted on both the front and rear sides of the scraper. The pull rope connected to the rear side of the scraper passes through the baffle and connects to a vertical spring (second spring), which is mounted on the partition via a fixing seat. The pull rope connected to the front side of the baffle extends downwards through the baffle to a spare hole. When it is necessary to thoroughly clean the particles on the surface of the baffle, the baffle is attracted to a magnet, and the scraper can be pulled downwards by the pull rope. The scraper automatically resets under the action of the spring (second spring), realizing the scraper's reciprocating motion up and down on the surface of the baffle.

[0014] Technical effects of the present invention:

[0015] Compared with the prior art, the novel pulse filter dust collector of the present invention has the following advantages:

[0016] 1. The present invention adopts a technical solution that combines primary bag dust collection with secondary cartridge dust collection, which can form a dust concentration gradient, so that the same dust collection device can be suitable for different dust emission concentration requirements. The dust collection plate and dust collection chamber used in this technical solution are used to collect the dust generated after primary bag filtration.

[0017] 2. This invention adopts a downward-opening feeding mode, which solves the problem of conventional horizontal tangential feeding ports affecting bag dust collection. It avoids horizontal tangential air intake, making it less likely for dust to stick to the dust collector bag, thus improving the dust collection effect and service life of the dust collector bag. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structural principle of the novel pulse filter dust collector of Embodiment 1 of the present invention;

[0019] Figure 2 This is a schematic diagram of the dust collection plate structure in Embodiment 1 of the present invention;

[0020] Figure 3 This is a schematic diagram of the structural principle of the novel pulse filter dust collector of Embodiment 2 of the present invention;

[0021] Figure 4 For the present invention Figure 3 Enlarged view of the structure of part A.

[0022] In the diagram, the components are: 1. Tank body; 2. Dust collector filter cartridge; 3. Dust collector bag; 4. Dust collection plate; 5. Baffle plate; 6. Dust collection chamber; 7. Dust inlet pipe; 8. Separation hood; 9. Dust collection pipe; 10. Feed valve; 11. Dust concentration tester; 12. Fixing frame; 13. Perforated plate; 14. Secondary pulse backflushing assembly; 15. Feed inlet; 16. Secondary exhaust port; 17. Primary exhaust port; 18. Control box; 19. Safety valve; 20. Pressure gauge; 21. Discharge port; 22. Air inlet; 23. Manhole; 24. Primary pulse backflushing assembly; 25. Baffle; 26. Spring 1; 27. Scraper; 28. Pull rope; 29. ​​Spring 2; 30. Fixing base; 31. Spare hole; 32. Magnet; 601 upper dust collection chamber; 602 lower dust collection chamber. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0024] Example 1

[0025] like Figure 1 and 2 As shown, this embodiment relates to a novel pulse filter dust collector, which includes a tank body 1; the bottom of the tank body 1 has a conical structure and the top has an elliptical structure; a safety valve 19 and a pressure gauge 20 are provided on the top of the tank body 1, and a discharge port 21 and an air inlet 22 are provided on the bottom side of the tank body 1; a maintenance manhole 23 is provided on the top, side and bottom of the tank body respectively.

[0026] Inside the tank 1, from top to bottom, are arranged a dust collector filter cartridge 2 and a dust collector bag 3; the bottom of the dust collector bag 3 is fixed to the inner wall of the tank by a fixing bracket 12; the top of the dust collector filter cartridge 2 is provided with a perforated plate 13 and a secondary pulse back-blowing assembly 14; the top of the dust collector bag 3 is provided with a primary pulse back-blowing assembly 24; a dust collection plate 4 is provided above the primary pulse back-blowing assembly 24; the dust collection plate 4 is inclined and matches the top of several dust collector bags 3.

[0027] Several dust collector bags 3 are provided and located below the dust collector filter cartridge 2; the top height of the several dust collector bags 3 gradually decreases from the inner wall of the tank 1 to the partition 5; the partition 5 is located inside the tank 1 and forms a dust collection chamber 6 between it and the inner wall of the tank 1. The bottom of the dust collection chamber 6 is closed, and one side of the lower end of the dust collection chamber 6 is connected to the dust collection pipe 9, through which the dust is transported to external equipment.

[0028] A dust inlet pipe 7 is installed below the dust collector bag 3, and the dust inlet pipe 7 is connected to a separation hood 8, with the opening of the separation hood 8 facing downwards. The dust inlet pipe 7 bends downwards inside the tank body 1, and its bottom connects to the separation hood 8, which has a trumpet-shaped structure. The inlet 15 of the dust inlet pipe 7 outside the tank body 1 adopts a reducing head structure, and a feed valve 10 is installed on the dust inlet pipe 7, located outside the tank body 1. This invention uses a structure where the dust inlet pipe 7 bends downwards inside the tank, and a separation hood 8 is added, which can pre-separate the gas and dust, allowing the dust to fall and the gas to rise; the reducing head structure can slow down the flow rate of the powder and increase gravity separation.

[0029] The tank body 1 is provided with a secondary vent 16 on the top and a primary vent 17 on the side. The primary vent 17 is located above the dust collection chamber 6 and below the dust filter cartridge 2. Dust concentration testers 11 are provided at the feed inlet of the dust inlet pipe 7, the secondary vent 16, and the primary vent 17. Several dust concentration testers 11 are connected to the control box 18 to transmit the dust concentration detection results to the control box 18, which then automatically controls the workflow.

[0030] Working principle: This invention has the following multiple working modes:

[0031] When the process requires particulate matter emissions greater than 10 mg / m³, automatic control via control box 18 can be used to employ only a single-stage bag filter filtration system, with venting through the primary exhaust port 17 in the middle of tank 1. In other words, for processes with lower requirements, only single-stage dust removal is needed. The dust concentration after primary dust removal is monitored. If the requirements are met, signal feedback will automatically close the exhaust valve at the upper secondary exhaust port 16 and the secondary pulse backflushing assembly 14, allowing venting through the middle primary exhaust port 17. If the requirements are not met, signal feedback will also automatically close the middle primary exhaust port 17, activate the upper secondary exhaust port 16, and start the primary and secondary pulse backflushing assemblies 24 and 14 for both primary and secondary dust removal.

[0032] When the process requires particulate matter emissions to be less than 10 mg / m³, automatic control via control box 18 is required. This necessitates a primary bag filter + secondary cartridge filter system, with venting through the secondary vent 16 at the top of tank 1. For processes with higher requirements, the concentration after secondary venting needs to be monitored to ensure it meets the requirements. If it does, the intermediate primary vent 17 should be automatically closed, the upper secondary vent 16 activated, and the primary and secondary pulse backflushing components 24 and 14 of the primary and secondary dust collectors initiated.

[0033] This invention adopts a technical solution that combines primary bag filter dust collection with secondary cartridge filter dust collection. The primary bag filter dust collection and / or secondary cartridge filter dust collection can be selected according to actual needs, so that the same dust collection device can be suitable for different dust emission concentration requirements.

[0034] Example 2

[0035] like Figure 3 and 4 As shown, this embodiment involves a novel pulse-jet filter dust collector, the structure of which is basically the same as that of Embodiment 1, except that:

[0036] The partition 5 extends downward to the bottom of the tank 1 and seals with the bottom of the tank 1. The dust collection chamber 6 is divided into an upper dust collection chamber 601 and a lower dust collection chamber 602 by an inclined metal baffle 25. A spare hole 31 is provided on the side of the lower dust collection chamber 602. The high end of the baffle 25 is hinged to the partition 5, and the hinge can be sealed to prevent gas from escaping. The bottom of the baffle 25 is supported by a spring 26. The spring 26 is always in a compressed state, pressing the baffle 25 upward so that the lower end of the baffle 25 is in close contact with the inner wall of the tank 1. A magnet 32 ​​for adsorbing the baffle 25 is also provided on the partition 5. The magnet 32 ​​is inclined and cooperates with the baffle 25 after it is rotated downward. The above-mentioned structural design improves the flexibility of dust collection. If the dust collection pipe 9 becomes blocked, the baffle 25 can be pulled down by opening the spare hole 31 and fixed by the magnet 32. The spare hole 31 can be connected to the external dust collection pipeline. The particles are discharged into the lower dust collection chamber 602 and then into the external dust collection pipeline. On the other hand, when there are many particles in the upper dust collection chamber 601, the baffle 25 rotates downward under the pressure of the particles, discharging some of the particles into the lower dust collection chamber 602, so as to temporarily solve the problem that the upper dust collection chamber 601 is prone to blockage of the dust collection pipe 9 due to excessive dust collection.

[0037] A scraper 27 is slidably mounted on the top of the upper surface of the baffle 25. Pull ropes 28 are fixedly mounted on both the front and rear sides of the scraper 27. The pull rope 28 connected to the rear side of the scraper 27 passes through the baffle 25 and connects to a vertical spring 29. The spring 29 is mounted on the partition 5 via a fixing seat 30. The pull rope 28 connected to the front side of the baffle 25 passes through the baffle 25 and extends downwards to the spare hole 31. When it is necessary to thoroughly clean the particles on the surface of the baffle 25, the baffle 25 is attracted to the magnet 32, and the scraper 27 can be pulled downwards by the pull rope 28. The scraper 27 automatically resets under the action of the spring 29, realizing the reciprocating motion of the scraper 27 on the upper surface of the baffle 25.

[0038] To prevent scraper 27 from blocking particles on baffle 25, scraper 27 is in its original position and is tightly attached to baffle 5 under the downward pulling action of spring 29.

[0039] The free end of the pull rope 28 connected to the front side of the baffle 25 is provided with a pull ring. The pull ring serves two purposes: firstly, to allow the pull rope to hang down, and secondly, to prevent the pull rope from falling off the baffle 25.

[0040] The above-described specific embodiments are merely specific examples of the present invention. The patent protection scope of the present invention includes, but is not limited to, the above-described specific embodiments. Any appropriate changes or modifications made by a person skilled in the art that conform to the claims of the present invention should fall within the patent protection scope of the present invention.

Claims

1. A novel pulse-jet filter dust collector, characterized in that: Includes a tank (1); the tank (1) is equipped with a dust collector filter cartridge (2) and a dust collector bag (3); several dust collector bags (3) are provided and located below the dust collector filter cartridge (2); the height of the top of the several dust collector bags (3) gradually decreases from the inner wall of the tank (1) to the partition (5); the partition (5) is located inside the tank (1) and forms a dust collection chamber (6) between it and the inner wall of the tank (1); a dust collection plate (4) is provided above the several dust collector bags (3); the dust collection plate (4) is inclined and matches the top of the several dust collector bags (3); a dust inlet pipe (7) is provided below the dust collector bags (3), and the dust inlet pipe (7) is connected to a separation hood (8), the separation hood (8) opening downwards; The tank (1) is provided with a secondary vent (16) at the top and a primary vent (17) on the side. The primary vent (17) is located above the dust collection chamber (6) and below the dust removal filter cartridge (2). The partition (5) extends downward to the bottom of the tank (1). The dust collection chamber (6) is divided into an upper dust collection chamber (601) and a lower dust collection chamber (602) by an inclined metal baffle (25). A spare hole (31) is provided on the side of the lower dust collection chamber (602). The high end of the baffle (25) is hinged to the partition (5). The bottom of the baffle (25) is supported by a spring (26) to the partition (5). The spring (26) is always in a compressed state, pressing the baffle (25) upward so that the lower end of the baffle (25) is in close contact with the inner wall of the tank (1). The partition (5) also has A magnet (32) is provided for adsorbing the baffle (25). The magnet (32) is tilted and cooperates with the baffle (25) after it is rotated downward. A scraper (27) is slidably provided on the top of the upper surface of the baffle (25). Pull ropes (28) are fixedly provided on both the front and rear sides of the scraper (27). The pull rope (28) connected to the rear side of the scraper (27) passes through the baffle (25) and is connected to the second vertical spring (29). The second spring (29) is installed on the partition (5) through the fixing seat (30). The pull rope (28) connected to the front side of the baffle (25) passes through the baffle (25) and extends downward to the spare hole (31).

2. The novel pulse filter dust collector according to claim 1, characterized in that: Dust concentration testers (11) are installed at the feed inlet of the dust inlet pipe (7), the secondary exhaust port (16), and the primary exhaust port (17). Several dust concentration testers (11) are connected to the control box (18).

3. The novel pulse filter dust collector according to claim 1, characterized in that: The dust inlet pipe (7) bends downward inside the tank (1) and is connected to the separation hood (8) at the bottom. The separation hood (8) has a horn-shaped structure.

4. The novel pulse filter dust collector according to claim 1, characterized in that: The dust inlet pipe (7) adopts a large-small head structure at the feed inlet (15) outside the tank body (1).

5. The novel pulse filter dust collector according to claim 1, characterized in that: The lower end of the dust collection chamber (6) is connected to the dust collection pipe (9).

6. The novel pulse filter dust collector according to claim 1, characterized in that: The dust collector filter cartridge (2) is provided with a perforated plate (13) and a secondary pulse backflushing assembly (14) at the top; the dust collector bag (3) is provided with a primary pulse backflushing assembly (24) at the top.

7. The novel pulse filter dust collector according to claim 1, characterized in that: A pull ring is provided at the free end of the pull rope (28) connected to the front side of the baffle (25).

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