Self-cleaning dust remover

Abstract

The invention discloses a self-cleaning dust remover, and relates to the technical field of dust removers. When the self-cleaning dust remover is used, a shell is arranged at the top of a stock bin, a lower cavity is communicated with the stock bin, and a negative pressure connector is externally connected with negative pressure equipment; during working, a negative pressure environment is formed in the shell, dust in the stock bin enters the lower cavity under the action of pressure difference, airflow is filtered through the cloth bag filter cartridge, and the dust is intercepted on the surface of the cloth bag filter cartridge; when excessive dust is attached to the surface of the cloth bag filter cartridge, compressed air is blown to the inner side and the inner side of the cloth bag filter cartridge through the main pulse pipe and the auxiliary pulse pipe, and high-pressure air from the inner side of the cloth bag filter cartridge blows the dust attached to the surface of the cloth bag filter cartridge into a preset dust deposition hopper below the cloth bag filter cartridge. High-pressure air from the outer side of the cloth bag filter cartridge is obliquely blown to the outer surface of the cloth bag filter cartridge, so that relatively firm impurities adhered to the surface of the cloth bag filter cartridge can be blown away from the cloth bag filter cartridge, the self-cleaning efficiency is improved, and the purpose of collecting dust is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of dust collectors, in particular to a self-cleaning dust collector. Background Art

[0002] Pulse bag dust collectors are primarily used for dust removal in industries such as foundry, machining, metallurgy, ceramics, glass, chemicals, and grain processing. They effectively remove heavy-gravity foundry sand, metal cuttings, and medium-gravity dusts such as cement dust, ceramic dust, gypsum powder, asbestos powder, carbon powder, pigment, bakelite powder, and plastic powder, ensuring that emission concentrations remain below national emission standards. Pulse bag dust collectors offer advantages such as small size, high airflow capacity, compact structure, and ease of use and reliability.

[0003] Under the traction of the fan power, a negative pressure environment is formed inside the dust collector, in the dust collection pipe and at the dust collection hood. The dust at the dust-raising point enters the dust collector under the action of the pressure difference. The air flow is filtered through the dust filter bag and the dust is trapped on the surface of the bag. The pulse signal is regularly input to the pulse valve through the PLC controller. The high-pressure wind of the compressed gas blows the dust adhering to the surface of the filter bag down and collects it in the dust hopper, thereby achieving the purpose of collecting dust. The treated clean gas is discharged from the chimney through the dust removal fan.

[0004] Although the above-mentioned traditional pulse bag dust collector can perform self-cleaning, since it only sets high-pressure air to blow from the inside of the bag to the outside of the bag, the cleaning effect on some impurities that are firmly adhered to the outside of the bag is poor.

[0005] In view of this, there is an urgent need for a self-cleaning dust collector to solve the defects in the prior art. Summary of the Invention

[0006] In view of the problems existing in the prior art, the present invention solves the problem with the following technical structure.

[0007] To achieve the above object, the present invention adopts the following technical solutions: A self-cleaning dust collector comprises: a housing and a self-cleaning mechanism, wherein a partition plate is provided in the housing, the partition plate dividing the interior of the housing into two cavities, the two cavities being an upper cavity and a lower cavity, the upper cavity being located above the partition plate, and the lower cavity being located below the partition plate, the housing being provided with a negative pressure interface communicating with the upper cavity, and the bottom of the housing being configured as an opening; A plurality of bag filter cartridges are provided on the partition plate, and the opening ends of the plurality of bag filter cartridges are connected to the upper cavity; The self-cleaning mechanism includes a main pulse tube and an auxiliary pulse tube. The main pulse tube is provided with a plurality of main blowing pipes, and the plurality of main blowing pipes extend to the inner side of the bag filter respectively. The auxiliary pulse tube is provided with a plurality of auxiliary blowing pipes, and the plurality of auxiliary blowing pipes are arranged in the lower cavity. The plurality of auxiliary blowing pipes are respectively arranged on the outer sides of the bag filter respectively, and the air outlet direction of the auxiliary blowing pipe is inclined to point to the outer side of the bag filter.

[0008] The self-cleaning mechanism includes an air supply device, and the main pulse tube and the auxiliary pulse tube are both connected to the air supply device.

[0009] The main pulse tube and the auxiliary pulse tube are both provided with pulse valves.

[0010] The auxiliary blowing pipe includes an annular pipe, which is annular and is sleeved on the outside of the bag filter. The annular pipe is connected to the auxiliary pulse pipe. A plurality of air outlet pipes are provided on the annular pipe, and the air outlet direction of the air outlet pipe is inclined to the outside of the bag filter.

[0011] The auxiliary blowing pipe includes a plurality of annular pipes arranged in sequence from top to bottom.

[0012] The plurality of air outlet pipes are evenly distributed around the circumference.

[0013] The bag filter cartridges are arranged in multiple rows in the horizontal direction, and each row of filter cartridges is provided with a main pulse tube and an auxiliary pulse tube.

[0014] The shell is provided with an upper cover plate on the top of the upper cavity.

[0015] The upper cover plate is fixed to the housing by bolts.

[0016] A weighing sensor is provided at the partition plate.

[0017] The above structure of the present invention can achieve the following beneficial effects: During use, the shell is placed on the top of the silo so that the lower cavity is connected to the silo, and the negative pressure interface is connected to a negative pressure device. During operation, a negative pressure environment is formed inside the shell, so that the dust in the silo enters the lower cavity under the action of the pressure difference, and the air flow is filtered through the cloth filter cartridge, and the dust is trapped on the surface of the cloth filter cartridge. When there is too much dust attached to the surface of the cloth filter cartridge, compressed gas is blown to the inside and outside of the cloth filter cartridge through the main pulse tube and the auxiliary pulse tube. The high-pressure wind from the inside of the cloth filter cartridge blows the dust attached to the surface of the cloth filter cartridge into the pre-set dust storage hopper below, while the high-pressure wind from the outside of the cloth filter cartridge obliquely blows to the outer surface of the cloth filter cartridge, which can blow the impurities that are more firmly attached to the surface of the cloth filter cartridge away from the cloth filter cartridge, thereby improving the self-cleaning efficiency and achieving the purpose of collecting dust. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the structure of this embodiment; Figure 2 This is a structural diagram from another perspective of this embodiment.

[0019] In the figure: 1. Shell; 2. Partition plate; 3. Bag filter cartridge; 4. Main pulse tube; 5. Auxiliary pulse tube; 6. Main injection pipe; 7. Air supply device; 8. Ring pipe; 9. Air outlet pipe; 10. Upper cover. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0021] It should be noted that the terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, apparatus, product or equipment that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or are inherent to these processes, methods, products or equipment.

[0022] The following is combined with Figure 1-2 This application is described in further detail.

[0023] refer to Figure 1-Figure 2 A self-cleaning dust collector is shown, comprising: a housing 1 and a self-cleaning mechanism. A partition plate 2 is provided within the housing 1, which divides the interior of the housing 1 into two cavities, an upper cavity and a lower cavity. The upper cavity is located above the partition plate 2, and the lower cavity is located below the partition plate 2. A negative pressure interface is provided on the housing 1 that communicates with the upper cavity, and the bottom of the housing 1 is configured as an opening. A plurality of bag filter cartridges 3 are provided on the partition plate 2, and the opening ends of the plurality of bag filter cartridges 3 are all connected to the upper cavity; The self-cleaning mechanism includes a main pulse tube 4 and an auxiliary pulse tube 5. The main pulse tube 4 is provided with a number of main blowing tubes 6, and the main blowing tubes 6 respectively extend to the inner side of the bag filter 3. The auxiliary pulse tube 5 is provided with a number of auxiliary blowing tubes, and the auxiliary blowing tubes are arranged in the lower cavity. The auxiliary blowing tubes are respectively arranged on the outside of the bag filter 3, and the air outlet direction of the auxiliary blowing tube is inclined to point to the outside of the bag filter 3.

[0024] Based on the above structure, when in use, the shell 1 is placed on the top of the silo (so that the shell 1 is connected to the silo through the bottom opening), the lower cavity is connected to the silo, and the negative pressure interface is connected to the negative pressure equipment; when working, a negative pressure environment is formed inside the shell 1 (upper cavity, lower cavity), so that the dust in the silo enters the lower cavity under the action of pressure difference, and the air flow is filtered through the bag filter 3, and the dust is trapped on the surface of the bag filter 3; when there is too much dust attached to the surface of the bag filter 3, the dust is discharged to the bag filter through the main pulse tube 4 and the auxiliary pulse tube 5. Compressed gas is sprayed on the inner and outer sides of the bag filter cartridge 3 (the main pulse tube 4 and the auxiliary pulse tube 5 can work simultaneously or sequentially according to a rule). The high-pressure wind from the inside of the bag filter cartridge 3 blows the dust attached to the surface of the bag filter cartridge 3 into the pre-set dust storage hopper below, while the high-pressure wind from the outside of the bag filter cartridge 3 is blown obliquely (from top to bottom) toward the outer surface of the bag filter cartridge 3, which can blow the impurities that are more firmly attached to the surface of the bag filter cartridge 3 away from the bag filter cartridge 3, thereby improving the self-cleaning efficiency and achieving the purpose of collecting dust.

[0025] like Figure 1 and Figure 2 As shown, the self-cleaning mechanism includes an air supply device 7, and the main pulse tube 4 and the auxiliary pulse tube 5 are both connected to the air supply device 7, and compressed gas is provided to the main pulse tube 4 and the auxiliary pulse tube 5 through the air supply device 7. The air supply device 7 can be an air bag, etc.; and pulse valves are provided on the main pulse tube 4 and the auxiliary pulse tube 5, and the conduction of the main pulse tube 4 and the auxiliary pulse tube 5 are controlled respectively by the pulse valves, etc., and pulse signals can be regularly input to the pulse valves through the PLC controller, so that the main pulse tube 4 and the auxiliary pulse tube 5 clean the bag filter 3 according to a certain rule.

[0026] like Figure 1 As shown, in order to further improve the self-cleaning effect, the auxiliary blowing pipe includes an annular pipe 8, which is annular and sleeved on the outside of the bag filter drum 3. The annular pipe 8 is connected to the auxiliary pulse tube 5, and a plurality of air outlet pipes 9 are provided on the annular pipe 8. The air outlet direction of the air outlet pipe 9 is tilted to point to the outside of the bag filter drum 3 (in this embodiment, the air outlet pipe 9 is tilted from top to bottom) of the outside of the bag filter drum 3. In this way, the compressed gas is divided into a plurality of air outlet pipes 9 through the annular pipe 8, and the bag filter drum 3 is sprayed at different circumferential positions to reduce the dead angle of the spraying. The plurality of air outlet pipes 9 are preferably evenly distributed in the circumference of the bag filter drum 3; and the auxiliary blowing pipe includes a plurality of annular pipes 8 arranged in sequence from top to bottom, that is, the air outlet pipe 9 is provided with multiple layers to ensure that different height positions on the outside of the bag filter drum 3 have a better cleaning effect.

[0027] like Figure 2As shown, in order to improve the dust removal effect, several bag filter cartridges 3 are arranged in multiple rows in the horizontal direction, and each row of filter cartridges 3 is provided with a main pulse tube 4 and an auxiliary pulse tube 5, that is, each main pulse tube 4 or each auxiliary pulse tube 5 outputs high-pressure air to several bag filter cartridges 3 respectively, so as to ensure that the pressure of the high-pressure air blown to the bag filter cartridges 3 is large enough to ensure a better cleaning effect.

[0028] like Figure 1 As shown, in order to facilitate disassembly and maintenance of the interior of the shell 1, the shell 1 is provided with an upper cover plate 10 on the top of the upper cavity, and the upper cover plate 9 is fixed to the shell 1 by bolts. By screwing the bolts, the upper cover plate 10 can be removed and the interior of the shell 1 can be repaired and maintained.

[0029] A further optimization is that a weighing sensor is provided at the partition plate 2, and the partition plate 2 is movably arranged in the shell 1. The partition plate 2 is weighed by the weighing sensor. When there is a lot of dust attached to the bag filter 3 installed on the partition plate 2, the weighing sensor detects that the weight of the partition plate is large and exceeds the preset value, and then the bag filter 3 is cleaned by the self-cleaning mechanism.

[0030] In summary, when in use, the shell 1 is placed on the top of the silo so that the lower cavity is connected to the silo, and the negative pressure interface is connected to a negative pressure device; when working, a negative pressure environment is formed inside the shell 1, so that the dust in the silo enters the lower cavity under the action of the pressure difference, and the air flow is filtered through the cloth bag filter drum 3, and the dust is trapped on the surface of the cloth bag filter drum 3; when there is too much dust attached to the surface of the cloth bag filter drum 3, compressed gas is blown to the inside and outside of the cloth bag filter drum 3 through the main pulse tube 4 and the auxiliary pulse tube 5, and the high-pressure wind from the inside of the cloth bag filter drum 3 blows the dust attached to the surface of the cloth bag filter drum 3 into the pre-set dust storage hopper below, while the high-pressure wind from the outside of the cloth bag filter drum 3 is tilted to the outer surface of the cloth bag filter drum 3, which can blow away the impurities that are more firmly attached to the surface of the cloth bag filter drum 3, thereby improving the self-cleaning efficiency and achieving the purpose of collecting dust.

[0031] The above are only preferred embodiments of the present application, and the present invention is not limited to the above embodiments. It is understood that other improvements and variations directly derived or imagined by those skilled in the art without departing from the spirit and concept of the present invention should be considered to be included in the scope of protection of the present invention.

Claims

1. A self-cleaning dust collector, characterized in that: include: A shell (1) and a self-cleaning mechanism, wherein a partition plate (2) is provided in the shell (1), and the partition plate (2) divides the interior of the shell (1) into two cavities, the two cavities being an upper cavity and a lower cavity, the upper cavity being located above the partition plate (2), and the lower cavity being located below the partition plate (2), the shell (1) being provided with a negative pressure interface communicating with the upper cavity, and the bottom of the shell (1) being arranged to be open; A plurality of bag filter cartridges (3) are provided on the partition plate (2), and the opening ends of the plurality of bag filter cartridges (3) are all connected to the upper cavity; The self-cleaning mechanism comprises a main pulse tube (4) and an auxiliary pulse tube (5), wherein the main pulse tube (4) is provided with a plurality of main blowing tubes (6), and the plurality of main blowing tubes (6) respectively extend to the inner side of the bag filter cartridge (3), and the auxiliary pulse tube (5) is provided with a plurality of auxiliary blowing tubes, wherein the plurality of auxiliary blowing tubes are arranged in the lower cavity, and the plurality of auxiliary blowing tubes are respectively arranged on the outer side of the plurality of bag filter cartridges (3), and the air outlet direction of the auxiliary blowing tube is inclined to point to the outer side of the bag filter cartridge (3).

2. A self-cleaning dust collector according to claim 1, characterized in that: The self-cleaning mechanism comprises an air supply device (7), and the main pulse tube (4) and the auxiliary pulse tube (5) are both connected to the air supply device (7).

3. The self-cleaning dust collector according to claim 2, characterized in that: The main pulse tube (4) and the auxiliary pulse tube (5) are both provided with pulse valves.

4. The self-cleaning dust collector according to claim 1, characterized in that: The auxiliary blowing pipe includes an annular pipe (8), the annular pipe (8) is annular, the annular pipe (8) is sleeved on the outside of the bag filter cartridge (3), the annular pipe (8) is connected to the auxiliary pulse pipe (5), and a plurality of air outlet pipes (9) are provided on the annular pipe (8), and the air outlet direction of the air outlet pipes (9) is inclined to point to the outside of the bag filter cartridge (3).

5. The self-cleaning dust collector according to claim 4, characterized in that: The auxiliary blowing pipe comprises a plurality of annular pipes (8) arranged sequentially from top to bottom.

6. The self-cleaning dust collector according to claim 4, characterized in that: The plurality of air outlet pipes (9) are evenly distributed around the circumference.

7. The self-cleaning dust collector according to claim 1, characterized in that: The plurality of bag filter cartridges (3) are arranged in multiple rows in the horizontal direction, and each row of filter cartridges (3) is provided with a main pulse tube (4) and an auxiliary pulse tube (5).

8. The self-cleaning dust collector according to claim 1, characterized in that: The housing (1) is provided with an upper cover plate (10) on the top of the upper cavity.

9. The self-cleaning dust collector according to claim 8, characterized in that: The upper cover plate (9) is fixed to the housing (1) by means of bolts.

10. The self-cleaning dust collector according to claim 1, characterized in that: A weighing sensor is provided at the partition plate (2).

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