Dust removal device

Abstract

The utility model belongs to the industrial dust control technical field. Dust removal device, include: dust removal box, dust removal box one side sets up the maintenance cabin door of side open type, filter assembly, side installs in dust removal box, utilizes the maintenance cabin door of side open type and realizes the installation and replacement of filter assembly, sprays and blows the component, including: gas pocket, sets up above the top board of dust removal box, electromagnetic pulse valve group, electromagnetic pulse valve air inlet among electromagnetic pulse valve group is vertically set on the top gas outlet of gas pocket, sprays and blows the pipe, sets up on gas pocket. The utility model is used to solve the technical problem that pulse bag type dust collector of existing adopts traditional right angle type sprays and blows the pipe and clears ash, and the pressure loss is high, and the spray resistance is high, and the airflow distribution is uneven.

Description

Technical Field

[0001] This utility model belongs to the field of industrial dust control technology, specifically relating to a dust removal device. Background Technology

[0002] In material handling systems of industries such as grain, building materials, metallurgy, and chemicals, dust pollution generated during silo operations has become a key bottleneck restricting green production. Traditional dust removal equipment suffers from three major technical challenges:

[0003] (1) Structural contradictions caused by spatial adaptability defects:

[0004] Existing pulse-jet bag filters generally employ a top-mounted vertical bag-changing structure, a design that reveals fundamental flaws in industrial settings with limited ceiling height. In actual installations in indoor plants or integrated silo systems, the conflict between the building's net height and the operating space above the equipment is particularly pronounced. Taking a typical plant with a ceiling height of 4.5m as an example, the traditional top-mounted bag-changing structure requires at least 1.8m of operating space, reducing the usable height of the equipment itself to below 2.7m. If the dust collector needs to be installed at the top of the system, the space becomes even more cramped, making it difficult to accommodate the installation requirements of long filter bags. This dual limitation of space and structure significantly weakens the equipment's adaptability to compact process systems.

[0005] Existing pulse jet bag filters generally adopt a top-vertical bag replacement structure. In indoor factories or integrated silo systems with limited floor height, the clearance between the top of the equipment and the building structure is often less than 1.5 meters or even lower, which requires maintenance personnel to crouch down to replace the filter bags.

[0006] Regarding dust exposure, dust diffusion in confined spaces exhibits a "chimney effect." Actual measurement data shows that under clearance conditions of 1.5 meters or lower, the instantaneous dust concentration in the bag-changing work area rises sharply, far exceeding the requirements of GBZ 2.1-2019 "Occupational Exposure Limits for Hazardous Factors in the Workplace." When working in combustible dust environments (such as starch workshops and aluminum-magnesium powder silos), the duration of the explosive atmosphere is extended several times over, and the explosive pentagonal parameter Kst accumulates exponentially due to spatial constraints.

[0007] (2) Maintenance safety bottleneck: Although the conventional side-opening structure solves the space problem to some extent, the filter bag fixing still adopts the traditional elastic expansion ring or snap-fit ​​sealing method, which poses a risk of filter bag falling off and causing unplanned shutdown. In addition, this structure occupies a large space and requires personnel to enter the equipment to change bags. Similarly, as mentioned in (1), there is a major explosion safety hazard in the confined space. Although the conventional side-opening dust collector partially solves the space problem, its filter bag fixing mechanism still uses the traditional bottom-mounted type, which poses a double safety hazard:

[0008] (2-1) Ergonomic defects: Filter bag replacement requires people to enter the enclosed space inside the equipment, which is small and makes the operation difficult;

[0009] (2-2) Inherent safety defects: For example, in combustible dust environments such as aluminum powder (LEL < 60 g / m³) and magnesium powder (LEL < 20 g / m³), internal operation of equipment may cause secondary dust generation, causing the local dust concentration to momentarily exceed the lower explosive limit, violating the mandatory requirement of Article 6.3.2 of the "Dust Explosion Prevention Safety Regulations" (GB 15577-2018) that "continuous monitoring of dust concentration should be carried out during internal operation of equipment".

[0010] (3) Limitations of dust removal efficiency: In recent years, dust removal technology has developed in two main directions: one is compact structure, such as using side-mounted large-size flat bags to reduce equipment height by 40%; the other is intelligent maintenance, which reduces the bag replacement time for a single person to a lower level through quick-release mechanisms. For extra-large flat bags (envelope-type structure), existing pulse jet cleaning systems have dust removal blind spots. Experiments show that when using traditional right-angle jet pipes for dust removal, the pressure loss is high, the jet resistance is high, the airflow distribution is uneven, and there is a risk of air leakage or jet deflection at the connection parts. Utility Model Content

[0011] The purpose of this utility model is to provide a dust removal device to solve the technical problems of high pressure loss, high blowing resistance and uneven airflow distribution when the existing pulse bag dust collector uses traditional right-angle jet pipes for dust removal.

[0012] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a dust removal device, characterized in that it includes:

[0013] A dust collector housing, wherein a side-opening maintenance door is provided on one side of the dust collector housing;

[0014] The filter assembly is mounted on the side inside the dust collection box, and the filter assembly can be installed and replaced using the side-opening maintenance door;

[0015] The blowing assembly includes:

[0016] An air chamber is located above the top plate of the dust collector housing;

[0017] An electromagnetic pulse valve assembly, wherein the air inlet of the electromagnetic pulse valve in the electromagnetic pulse valve assembly is vertically disposed on the top air outlet of the air tank;

[0018] A blowpipe is installed on the air tank.

[0019] This invention is the first to adopt a vertically mounted submerged pulse valve, directly connecting it to the top outlet of the air tank. This design eliminates the airflow bend required for traditional installations, reducing pressure loss during injection.

[0020] This invention features a side-mounted bag replacement design, effectively solving space constraints and significantly improving maintenance convenience. The design eliminates the need to replace bags from the top, reducing maintenance difficulty while ensuring safety and reliability.

[0021] This utility model features a side-opening maintenance hatch and a quick-release bag assembly module, enabling the maintenance of all filter bags to be completed within a single-sided maintenance channel. Furthermore, the maintenance process does not require entering the dust collector, completely eliminating the risk of dust exposure.

[0022] To solve the technical problem of how the jet pipe works, this utility model adopts the following technical solution, wherein the jet pipe includes:

[0023] One blowpipe is vertically installed on the air tank;

[0024] The second blowpipe is coaxially disposed below the first blowpipe via a sealing connector.

[0025] The electromagnetic pulse valve of this utility model is installed directly above the nozzle, so that the first and second nozzles are in a vertical line, which can effectively reduce the reduced spray resistance caused by the bend.

[0026] To solve the technical problem of how to implement the sealing connection, the present invention adopts the following technical solution: the sealing connection includes a sealing fitting sleeve for connecting the connection ends of the first blow pipe and the second blow pipe;

[0027] A sealing groove is provided at the end of the first blow pipe, and a sealing element is provided in the sealing groove for sealing the sealing sleeve with the first blow pipe.

[0028] This invention features a sealing groove seat at the bottom of the first blowpipe and a sealing groove fitting sleeve installed at the top of the second blowpipe. When the sealing groove seat and the sealing groove fitting sleeve mate, the sealing element increases the contact area between the bottom of the sealing groove seat and the sealing fitting sleeve, thus achieving a sealing effect. Furthermore, it ensures that the first and second blowpipes of the solenoid valve are aligned vertically.

[0029] For large-sized flat bags (envelope-style structure, e.g., dimensions ≥ 500 × 1000 mm), existing pulse single-layer arrangement jet cleaning systems have physical cleaning blind spots, with no pulse cleaning failure near the bag opening. To solve the above technical problems, this utility model adopts the following technical solution: the electromagnetic pulse valve group includes several rows of electromagnetic pulse valves arranged at intervals; adjacent rows of electromagnetic pulse valves are staggered.

[0030] This invention features multiple rows of staggered electromagnetic pulse valve mounting positions on the top plane of the air tank, with the electromagnetic pulse valves installed vertically to form a three-dimensional spray matrix. This reduces the spacing between adjacent spray pipes to 100mm, breaking through the original limitation of the minimum installation size of the pulse valve and increasing the effective spray points by 30% within a limited space.

[0031] To solve the technical problem of how to implement an electromagnetic pulse valve, this utility model adopts the following technical solution, wherein the electromagnetic pulse valve is a submerged electromagnetic pulse valve.

[0032] To address the technical issue of how to install electromagnetic pulse valves, this invention adopts the following technical solution: the electromagnetic pulse valve is mounted on the dust collector housing via a valve seat and connecting parts. The pulse valves are fixed together by connecting parts using pulse valve seats.

[0033] To address the technical problem of blowpipe detachment due to vibration, this invention employs the following technical solution: the bottom of the blowpipe is connected to the bottom plate of the dust collector housing via a limiting component. This limiting component transmits the jetting recoil force to the bottom plate of the dust collector housing. This invention adds a limiting component, shifting the force-bearing position, preventing the blowpipe from detaching, and reducing the risk of blowpipe failure.

[0034] To address the technical problem of how to implement the limiting component, this utility model adopts the following technical solution, wherein the limiting component includes:

[0035] A limiting block is provided at the bottom of the second blowpipe;

[0036] A positioning plate is disposed on the bottom plate of the dust collector; the positioning plate and the limiting block are connected by a connector.

[0037] This invention adds limiting blocks to both ends of the blowpipe, which can effectively prevent the bolts from loosening due to the impact force generated by the pressure during blowing; it can apply all the impact force to the positioning plate, avoid the bolts from loosening due to vibration, and thus prevent the blowpipe from falling off, reducing the risk of blowpipe failure.

[0038] To address the technical challenge of implementing the filtration assembly, this invention employs the following technical solution: the filtration assembly includes a tube sheet and filter bags disposed on the tube sheet; the tube sheet is located inside the dust collector housing where the side-opening maintenance door is located; and the filter bags are flat filter bags.

[0039] This utility model adopts an envelope-shaped flat filter bag, and the tube sheet is changed from the top of the dust collector to the side. The envelope-shaped flat filter bag combined with the side bag replacement design overcomes the technical problem of space limitation. By transferring the bag replacement operation position from the top to the side, the maintenance operation height is significantly reduced, the risk of working at height is reduced, and the convenience, safety and reliability of maintenance are effectively improved while saving equipment installation and maintenance space.

[0040] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: the side-opening maintenance compartment door is hinged to the dust removal box body;

[0041] The dust collector housing is equipped with a locking assembly for locking the side-opening maintenance door. A side-opening maintenance door is located at the corresponding position of the filter bag opening; the door is connected to the dust collector housing via a hinge and is equipped with a locking assembly. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the dust removal device of this utility model;

[0043] Figure 2 This is a structural schematic diagram of the dust removal device of this utility model (with some side panels of the dust removal box and some side-opening maintenance doors removed).

[0044] Figure 3 This is a side view of the dust removal device of this utility model (with the side panel of the dust removal box removed).

[0045] Figure 4 This is a top view of the electromagnetic pulse valve assembly of the dust removal device of this utility model;

[0046] Figure 5 This is a perspective view of the electromagnetic pulse valve assembly of the dust removal device of this utility model, and an enlarged view of part A in the view;

[0047] Figure 6 This is a side view of the dust removal device of this utility model and an enlarged view of part B in the figure;

[0048] Figure 7 This is a side view of the dust removal device of this utility model and an enlarged view of part C in the figure;

[0049] In the picture:

[0050] 10. Dust removal equipment;

[0051] 100 Dust collector housing; 101 Top plate; 102 Side plate; 103 Bottom plate; 110 Side-opening maintenance door; 120 Locking assembly; 130 Hinge assembly;

[0052] 200 filter elements; 210 filter bags;

[0053] 300 Pulse jet assembly; 310 Air manifold; 320 Electromagnetic pulse valve assembly; 321 Electromagnetic pulse valve; 330 Pulse jet pipe; 331 Pulse jet pipe one; 3310 Sealing groove seat; 332 Pulse jet pipe two; 333 Sealing mating sleeve; 340 Limiting assembly; 341 Limiting block; 342 Positioning plate; 343 Connecting piece. Detailed Implementation

[0054] The present utility model will be further described below in conjunction with the accompanying drawings.

[0055] Embodiment 1

[0056] As Figure 1 shown, the dust removal device 10 includes a dust removal box body 100, a filtering component 200, and a jetting component 300.

[0057] As Figure 2 shown, the dust removal box body 100 includes a top plate 101, three side plates 102, and a bottom plate 103. A side-opening maintenance hatch 110 is provided on one side of the dust removal box body 100 without a side plate installed. The side-opening maintenance hatch 110 is hinged to the dust removal box body 100. Specifically, a hinge component 130 is installed between the side-opening maintenance hatch 110 and the dust removal box body 100. Preferably, the number of side-opening maintenance hatches 110 is four. The four side-opening maintenance hatches 110 form a "field" - shaped structure. A handle is installed on each side-opening maintenance hatch 110 to facilitate opening and closing of the hatch.

[0058] In one embodiment, a locking component 120 is provided on the dust removal box body 110 for locking the side-opening maintenance hatch 110 to the dust removal box body 100.

[0059] The filtering component 200 is installed on the side inside the dust removal box body 100, and the installation and replacement of the filtering component are realized by using the side-opening maintenance hatch 110.

[0060] In one embodiment, as Figure 2 、 Figure 3 shown, the filtering component 200 includes a flower plate and filter bags 210. Filter bags 210 are provided on the flower plate. The flower plate is arranged on one side inside the dust removal box body where the side-opening maintenance hatch is located. Preferably, the filter bags 210 are flat filter bags.

[0061] The present utility model adopts an envelope - type flat filter bag, and the flower plate is changed from the top of the dust collector to the side. The connection method between the filter bag mouth and the filter bag frame is the same as the traditional design (using an elastic expansion ring or bolt pressing). A side-opening maintenance hatch is provided at the corresponding position of the filter bag mouth. The hatch is connected to the dust removal box body through a hinge and is equipped with an airtight locking component.

[0062] The present utility model adopts an envelope - type flat cloth bag combined with a side bag - changing design, which overcomes the technical problem of space limitation. By transferring the bag - changing operation position from the top to the side, the maintenance operation height is significantly reduced, the risk of working at height is reduced, and while saving the installation and maintenance space of the equipment, the maintenance convenience, safety, and reliability are effectively improved;

[0063] As Figure 4 、 Figure 5 、 Figure 3As shown, the jet cleaning assembly 300 includes an air tank 310, an electromagnetic pulse valve group 320, and a jet pipe 330. The air tank 310 is installed above the top plate 101 of the dust collector housing 100.

[0064] In one embodiment, the electromagnetic pulse valve assembly 320 includes several rows of electromagnetic pulse valves 321 arranged at intervals. In this embodiment, the electromagnetic pulse valve assembly 320 includes two rows of electromagnetic pulse valves 321. The electromagnetic pulse valves 321 in adjacent rows are staggered. The air inlets of the electromagnetic pulse valves 321 are vertically arranged on the top air outlet of the air reservoir 310.

[0065] In one embodiment, the electromagnetic pulse valve 321 is a submerged electromagnetic pulse valve. The submerged electromagnetic pulse valve is vertically installed directly above the square air tank, and the air inlet of the electromagnetic pulse valve is directly connected to the air outlet at the top of the air tank, eliminating the need for traditional bends in the pipeline and achieving zero-turn airflow delivery.

[0066] In one embodiment, the electromagnetic pulse valve 321 is mounted on the dust collector housing 100 via a valve seat 322 and a connector 333. The electromagnetic pulse valves are fixed together by a bolt assembly of pulse valve seats.

[0067] This utility model's electromagnetic pulse valve adopts a submerged structure and is installed directly above, reducing the number of bends in the airflow transmission process. From a fluid dynamics perspective, this reduces the jetting resistance and improves the transmission efficiency and stability of the jetting airflow. Combined with the staggered arrangement, it further reduces the valve gap, enhancing the compactness and coordination of the pulse jetting system.

[0068] The blowpipe 330 is mounted on the air reservoir 310. In one embodiment, such as... Figure 6 As shown, the blowpipe 330 includes a first blowpipe 331 and a second blowpipe 332. The first blowpipe 331 is vertically mounted on the air chamber 310, that is, the first blowpipe 331 is perpendicularly mounted to the air chamber 310. The second blowpipe 332 is coaxially mounted below the first blowpipe 331 via a sealing connector.

[0069] In one embodiment, the sealing connector includes a sealing sleeve 333 for connecting the ends of the first and second blowpipes. A sealing groove 3310 is provided at the end of the first blowpipe 331 for installing a seal to seal the connection between the sealing sleeve 333 and the first blowpipe 331. The seal is preferably an O-ring.

[0070] Pulse valves are arranged in a double-layered, staggered pattern on the top plane of the air tank, forming a three-dimensional jet matrix. A sealing groove seat is installed at the bottom of the first submerged pulse valve jet pipe, and a sealing groove mating sleeve is installed at the top of the second jet pipe. When the sealing groove seat and the sealing groove mating sleeve are mated, an O-ring is present, which increases the contact area between the bottom of the sealing groove seat and the sealing groove mating sleeve, thus achieving a sealing effect. Figure 6As shown. It is also necessary to ensure that the first and second jet pipes of the solenoid valve are in a vertical line.

[0071] A limiting block is added to the lower part of the second blowpipe, and the bottom of the second blowpipe is rigidly connected directly to the limiting block. Then, the limiting block and the positioning plate are in rigid contact again. Figure 7 As shown, the purpose is to transmit the jetting recoil force to the positioning plate through the limit block, so as to prevent the connecting bolts from loosening due to vibration.

[0072] In one embodiment, such as Figure 7 As shown, the bottom of the blowpipe 330 is connected to the bottom plate 103 of the dust collector housing 100 via a limiting component 340. The limiting component 340 is used to transmit the blowback force to the bottom plate of the dust collector housing. Specifically, the limiting component 340 includes a limiting block 341 and a positioning plate 342. The limiting block 341 is disposed at the bottom of the blowpipe 332. The positioning plate 342 is disposed on the bottom plate 103 of the dust collector housing 100; the positioning plate 342 and the limiting block 341 are connected via a connector 343.

[0073] This invention adds a limiting component to shift the force-bearing position. Adding a limiting block to the end face of the blowpipe effectively prevents the bolts from loosening due to the impact force generated during blowing. This measure ensures that all impact force is applied to the positioning plate, preventing the bolts from loosening due to vibration, thus preventing the blowpipe from falling off and reducing the risk of blowpipe failure.

[0074] This invention features limiting blocks at both ends of the blow pipe. Through mechanical structural optimization, the impact force generated by the blow pressure is transferred to the guide positioning plate, effectively suppressing the loosening tendency of the bolts caused by vibration. This prevents the blow pipe from falling off from the perspective of mechanical connection stability, significantly reducing the probability of blow system failure and ensuring the stability and continuity of equipment operation.

[0075] The innovative point of this utility model is:

[0076] 1. Side-mounted optimized jet path

[0077] This utility model adopts an envelope-shaped flat cloth bag and a side-mounted bag replacement design, effectively solving the space limitation problem and significantly improving maintenance convenience. The design, which eliminates the need to replace the bag from the top, reduces maintenance difficulty while ensuring safety and reliability.

[0078] 2. Optimize the design of the electromagnetic pulse valve

[0079] The submerged electromagnetic pulse valve is installed directly above the nozzle, ensuring that blowpipe one and blowpipe two are vertically aligned. This effectively reduces the decrease in blow resistance caused by bends. Figure 4 , Figure 5 As shown, the pulse valves are staggered to reduce valve gaps.

[0080] 2.1. Submerged pulse valve installation above and airflow optimization technology.

[0081] Addressing the technical bottlenecks of high jet resistance and uneven airflow distribution caused by traditional pulse valve installation methods, this invention is the first to adopt a submerged pulse valve with a vertically mounted structure directly connected to the top outlet of the air tank. This design eliminates the airflow bend required by traditional installations, reducing pressure loss during jetting.

[0082] 2.2 Three-dimensional misaligned pulse valve array layout

[0083] Breaking away from the existing single-layer arrangement of pulse valves, a novel three-dimensional staggered valve assembly structure is developed. Double-layered, staggered pulse valve mounting positions are set on the top plane of the air tank, maintaining vertical installation to form a three-dimensional jetting matrix. For example... Figure Three This layout (example: 1.5” valve, minimum installation size 130) reduces the spacing between adjacent blowpipes to 100mm (breaking the original minimum installation size limit of the pulse valve), increasing the effective blowpipe points by 30% within a limited space.

[0084] 2.3 Modular Valve Assembly Maintenance System

[0085] The innovative design of the side-opening maintenance door and quick-release bag assembly module allows for the maintenance of all filter bags to be completed within a single-sided maintenance channel, without requiring entry into the dust collector, thus completely eliminating the risk of dust exposure.

[0086] This invention relates to a pulse-jet bag filter for dust collection in confined indoor spaces and integrated pulverizing systems with silos. It specifically addresses safety maintenance needs in flammable and explosive dust environments and optimizes the cleaning efficiency of large-format flat bags.

[0087] This utility model adopts an envelope-shaped flat filter bag and a side-mounted bag replacement design, side-mounted optimized blowing path, submerged pulse valves installed directly above and airflow optimization technology, and a three-dimensional staggered pulse valve array layout, which ensures the stability and continuity of equipment operation and improves the effective competitiveness of this type of dust collector.

[0088] Based on the advantages of the side-mounted structure, this utility model creatively integrates the two major technical dimensions of safety maintenance and dust removal efficiency into a system, forming an innovative solution suitable for complex working conditions.

[0089] The above embodiments are only for illustrating the technical features and concept of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made according to the spirit and implementation of this utility model should be covered within the protection scope of this utility model.

Claims

1. A dust removal device, characterized in that it comprises: A dust collector housing, wherein a side-opening maintenance door is provided on one side of the dust collector housing; The filter assembly is mounted on the side inside the dust collection box, and the filter assembly can be installed and replaced using the side-opening maintenance door; The blowing assembly includes: An air chamber is located above the top plate of the dust collector housing; An electromagnetic pulse valve assembly, wherein the air inlet of the electromagnetic pulse valve in the electromagnetic pulse valve assembly is vertically disposed on the top air outlet of the air tank; A blowpipe is installed on the air tank.

2. The dust removal device according to claim 1, characterized in that, The jet pipe includes: One blowpipe is vertically installed on the air tank; The second blowpipe is coaxially disposed below the first blowpipe via a sealing connector.

3. The dust removal device according to claim 2, characterized in that, The sealing connector includes a sealing sleeve for connecting the connection ends of the first jet pipe and the second jet pipe. A sealing groove is provided at the end of the first blow pipe, and a sealing element is provided in the sealing groove for sealing the sealing sleeve with the first blow pipe.

4. The dust removal device according to claim 1, characterized in that, The electromagnetic pulse valve group includes several rows of electromagnetic pulse valves arranged at intervals; the electromagnetic pulse valves in adjacent rows are staggered.

5. The dust removal device according to claim 4, characterized in that, The electromagnetic pulse valve is a submerged electromagnetic pulse valve.

6. The dust removal device according to claim 4, characterized in that, The electromagnetic pulse valve is mounted on the dust collector body via a valve seat and a connecting piece.

7. The dust removal device according to claim 2, characterized in that, The bottom of the blowpipe is connected to the bottom plate of the dust collector via a limiting component, which is used to transmit the blowback force to the bottom plate of the dust collector.

8. The dust removal device according to claim 7, characterized in that, The limiting component includes: A limiting block is provided at the bottom of the second blowpipe; A positioning plate is disposed on the bottom plate of the dust collector; the positioning plate and the limiting block are connected by a connector.

9. The dust removal device according to claim 1, characterized in that, The filter assembly includes a tube sheet and filter bags disposed on the tube sheet; the tube sheet is disposed on one side inside the dust collection chamber where the side-opening maintenance door is located; the filter bags are flat filter bags.

10. The dust removal device according to claim 1, characterized in that, The side-opening maintenance hatch is hinged to the dust removal box; The dust collection box is equipped with a locking assembly for locking the side-opening maintenance hatch.

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