Positive and negative pressure linked multi-tube dust remover

Abstract

The utility model discloses a positive and negative pressure linked multi-tube dust remover which comprises a box body, an air purification chamber, a filter chamber, an air storage device, a filter bag device and a blowing tube are arranged in the box body, and the air purification chamber is communicated with an air suction device; and the filtering chamber is communicated with an air blowing device. The air blowing device is used for continuously disturbing the air flow of the filter chamber, dust is not easy to be attached to the surface of the adjacent filter bag again after being removed from the filter bag, the speed of adhering and accumulating the dust on the filter bag is reduced, the dust of the filter bag can be removed under the condition of no shutdown, the frequent shutdown is reduced, and the replacement frequency of the filter bag is reduced; besides, by controlling the continuous operation of the air suction device and the air blowing device, positive pressure can be generated at the dusty gas inlet, negative pressure can be generated at the purified gas outlet, and a positive and negative pressure linked circulating air duct is formed in the box body, so that the dusty gas is smoother to circulate, and the dust removal efficiency of the dust remover is improved.

Description

Technical Field

[0001] This utility model relates to the field of grain filtration and storage, and in particular to a multi-tube dust collector with positive and negative pressure linkage. Background Technology

[0002] During the harvesting, transportation, processing, and storage of grains, various impurities often become mixed in due to the influence of various environmental factors. Inorganic impurities in grains include dust, mud, sand, mud lumps, stones, bricks, tiles, coal slag, glass shards, and metal objects; organic impurities include plant roots, stems, leaves, shells, and weed seeds. Impurities pose a significant threat to grain quality and safe production. Therefore, grains need to be screened and impurities removed before storage. During the impurity removal process, a large amount of dust and particles are generated. The dust-laden gas generated in this process needs to be purified before it can be released. In existing pulse dust collectors, the outlet pipe is connected to the fan during operation. When the fan is turned on, a negative pressure is created inside the chamber. Air carrying dust enters the chamber through the inlet pipe and can pass through the filter bags to exit through the outlet. The dust is isolated by the filter bags. After working for a period of time, the filter bags need to be cleaned. During cleaning, the pulse controller sequentially triggers each control valve to open the pulse valve. Air is sprayed into the corresponding filter bags through the nozzles. The filter bags expand rapidly and instantly, causing the dust accumulated on the surface of the filter bags to fall off, thereby achieving the cleaning of the filter bags.

[0003] In the aforementioned pulse jet baghouse dust collectors, to avoid affecting the operation of other equipment, operators often perform dust cleaning without shutting down the machine. They clean several sets of filter bags first, while the remaining filter bags can continue filtering normally, alternating between cleaning them. However, during this alternating cleaning process, some dust that falls off the filter bags can easily be carried by the airflow and re-attach to the surface of adjacent filter bags that have just been cleaned. This results in a less than ideal cleaning effect, requiring frequent shutdowns for cleaning, leading to low dust removal efficiency and making it unsuitable for continuous grain storage operations. In addition, during the pulse reverse blowing cleaning process, the filter bags will rapidly inflate, posing a significant risk of cracking at the filter bag seams during prolonged operation. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a multi-tube dust collector with positive and negative pressure linkage.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] This utility model discloses a multi-tube dust collector with positive and negative pressure linkage, comprising a housing; a clean air chamber is formed on the upper side of the housing, and a filter chamber is provided below the clean air chamber; an air storage device is fixed on the outer side of the clean air chamber; a plurality of filter bag devices are arranged in an array inside the filter chamber, and an installation hole is opened on the bottom plate of the clean air chamber corresponding to each filter bag device; a plurality of blow pipes are provided in the clean air chamber, and each blow pipe has a blow nozzle above each filter bag device; each blow pipe is connected to the air storage device; clean air outlets are respectively opened on the two side walls of the clean air chamber, and a suction device is connected to the outside of each clean air outlet to generate negative pressure in the clean air chamber; a dust-laden gas inlet is opened on one side wall of the filter chamber, and a blowing device is connected to the outside of the dust-laden gas inlet to generate positive pressure in the filter chamber; a plurality of dust hoppers are formed at the bottom of the filter chamber, and a fixing frame is also connected to the bottom of the housing.

[0007] As a preferred embodiment of this utility model, the air storage device includes a compressed air storage tank and a solenoid valve. The compressed air storage tank is fixed to the side wall of the housing by a bracket. The solenoid valve is disposed between the blow pipe and the compressed air storage tank. The inlet end of the solenoid valve is connected to the compressed air storage tank, and the outlet end of the solenoid valve is connected to the blow pipe. The solenoid valves are evenly distributed along the compressed air storage tank and are used to provide pulsed airflow to the blow pipe.

[0008] As a preferred technical solution of this utility model, the filter bag device includes a filter bag frame and a filter bag. The filter bag frame is cylindrical in shape and is placed in the mounting hole of the bottom plate of the clean air chamber. The filter bag is sleeved on the outside of the filter bag frame, and the center of the filter bag is coaxially arranged with the blow nozzle.

[0009] As a preferred embodiment of this utility model, the suction device includes a motor, a suction fan, a suction pipe, and a clean air discharge box. The output end of the motor is fixedly connected to the rotating shaft of the suction fan. The inlet end of the suction fan is connected to the suction pipe for drawing clean gas from the clean air chamber. The outlet end of the suction fan is connected to the clean air discharge box. The upper end of the suction pipe is connected to the clean air chamber through the clean air outlet. The top of the clean air discharge box is also rotatably connected to a movable cover plate via a hinge. The motor base is mounted on the fixed frame via a bracket.

[0010] As a preferred technical solution of this utility model, the blowing device includes a blower, a dust inlet hopper, and a blowing pipe. One end of the blowing pipe is connected to the filter chamber through the dust-laden gas inlet, and the other end of the blowing pipe is connected to the outlet of the blower. The inlet of the blower is connected to the dust inlet hopper for drawing in dust-laden gas and blowing the dust-laden gas into the filter chamber. The blower is mounted on the fixed frame by a bracket.

[0011] As a preferred embodiment of this utility model, the compressed air storage tank is connected to an external air compressor, and the solenoid valve is a pulse-type solenoid valve used to provide pulse-type compressed air to the filter bag device.

[0012] As a preferred embodiment of this utility model, the two suction devices are symmetrically arranged along the center of the box, and the suction fan drives the suction pipe to generate negative pressure in the clean air chamber, which is used to drive the purified gas to be discharged.

[0013] As a preferred embodiment of this utility model, the blower drives the blower tube to generate positive pressure in the filter chamber, which is used to drive the dust-laden gas into the filter chamber for filtration.

[0014] As a preferred embodiment of this utility model, the ash hopper is welded to the bottom of the housing and communicates with the filter chamber. The ash hopper is used to discharge the heavier dust particles from the dust-laden gas.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. By continuously agitating the airflow in the filter chamber through the blowing device, the dust is less likely to re-adhere to the surface of adjacent filter bags after being removed from the filter bags. This reduces the speed at which dust adheres and accumulates on the filter bags, allowing the filter bags to be cleaned without stopping the machine. This reduces the problem of frequent machine shutdowns, lowers the frequency of filter bag replacement, and provides excellent protection for the dust collector filter bags.

[0017] 2. By controlling the continuous operation of the suction and blowing devices, positive pressure can be generated at the dust-laden gas inlet and negative pressure at the clean gas outlet, forming a positive and negative pressure linkage circulation duct inside the housing. This makes the dust-laden gas flow more smoothly, resulting in a more ideal filter bag cleaning effect and improving the dust removal efficiency of the dust collector. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is the front view of this utility model;

[0021] Figure 3 This is a side view of the present invention;

[0022] Figure 4 This is a side view of the present invention;

[0023] Figure 5 This is a cross-sectional structural schematic diagram of the present invention;

[0024] In the diagram: 1. Housing; 2. Air storage device; 3. Filter bag device; 4. Suction device; 5. Blowing device; 6. Fixing frame; 11. Clean air chamber; 12. Filter chamber; 13. Blow pipe; 14. Blow nozzle; 15. Clean air outlet; 16. Dust-laden gas inlet; 17. Dust hopper; 21. Compressed air storage tank; 22. Solenoid valve; 31. Filter bag frame; 32. Filter bag; 41. Motor; 42. Suction fan; 43. Suction pipe; 44. Clean air discharge box; 45. Movable cover; 51. Blower; 52. Dust hopper; 53. Blowing pipe. Detailed Implementation

[0025] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0026] In the attached diagram, all identical reference numerals refer to the same components.

[0027] like Figure 1-5 As shown, this utility model provides a multi-tube dust collector with positive and negative pressure linkage, including a housing 1; a clean air chamber 11 is formed on the upper side of the housing 1, and a filter chamber 12 is provided below the clean air chamber 11. The clean air chamber 11 and the filter chamber 12 are separated by a bottom plate on the clean air chamber 11.

[0028] An air storage device 2 is fixed on the outside of the clean air chamber 11; several filter bag devices 3 are arranged in an array inside the filter chamber 12. An installation hole is opened on the bottom plate of the clean air chamber 11 for each filter bag device 3. The filter bag device 3 is used to filter the dust-laden gas flowing from the filter chamber 12 to the clean air chamber 11. The purified gas enters the clean air chamber 11, and dust and other solid particles are attached to the outer surface of the filter bag 32.

[0029] The clean air chamber 11 is equipped with multiple blow pipes 13, and each blow pipe 13 is equipped with a blow nozzle 14 corresponding to the top of each filter bag device 3; each blow pipe 13 is connected to the air storage device 2, and a pulse airflow is generated on the inner surface of the filter bag 32 through the blow nozzle 14, so that the filter bag 32 expands and deforms rapidly, shaking off the dust on the surface of the filter bag 32.

[0030] Clean air outlets 15 are respectively provided on the two side walls of the clean air chamber 11. Each clean air outlet 15 is connected to a suction device 4 on the outside, which is used to generate negative pressure in the clean air chamber 11.

[0031] A dust-laden gas inlet 16 is provided on one side wall of the filter chamber 12, and a blowing device 5 is connected to the outside of the dust-laden gas inlet 16 to generate positive pressure in the filter chamber 12.

[0032] Several ash hoppers 17 are formed at the bottom of the filter chamber 12, and a fixing frame 6 is also connected to the bottom of the box body 1.

[0033] For further details, please refer to the appendix. Figure 5 The air storage device 2 includes a compressed air storage tank 21 and a solenoid valve 22. The compressed air storage tank 21 is fixed to the side wall of the housing 1 by a bracket. The solenoid valve 22 is located between the blow pipe 13 and the compressed air storage tank 21. The inlet end of the solenoid valve 22 is connected to the compressed air storage tank 21, and the outlet end of the solenoid valve 22 is connected to the end of the blow pipe 13. The solenoid valves 22 are evenly distributed along the compressed air storage tank 21 and are used to provide pulsed airflow to the blow pipe 13.

[0034] In this embodiment, the compressed air storage tank 21 is connected to an external air compressor (not shown). The solenoid valve 22 is in a timed opening mode, which controls the compressed air storage tank 21 to provide pulse airflow to the blowpipe 13 connected to it, thereby periodically injecting compressed air into the filter bag 32, so that the dust attached to the surface of the filter bag 32 is periodically removed from the surface of the filter bag 32 and falls off, and is discharged from the bottom of the ash hopper 17 after settling.

[0035] For further details, please refer to the appendix. Figure 5 The filter bag device 3 includes a filter bag frame 31 and a filter bag 32. The filter bag frame 31 is cylindrical and is placed in the mounting hole of the bottom plate of the clean air chamber 11. The filter bag 32 is sleeved on the outside of the filter bag frame 31. The center of the filter bag 32 is coaxially arranged with the blow nozzle 14, which is used to periodically spray compressed gas into the filter bag 32 to shake off the dust on the outer surface of the filter bag 32.

[0036] For further details, please refer to the appendix. Figure 3The suction device 4 includes a motor 41, a suction fan 42, a suction pipe 43, and a clean air discharge box 44. The output end of the motor 41 is fixedly connected to the rotating shaft of the suction fan 42. The inlet end of the suction fan 42 is connected to the suction pipe 43 for sucking up clean gas from the clean air chamber 11. The outlet end of the suction fan 42 is connected to the clean air discharge box 44. The upper end of the suction pipe 43 is connected to the clean air chamber 11 through the clean air outlet 15. The top of the clean air discharge box 44 is also rotatably connected to a movable cover plate 45 via a hinge. The base of the motor 41 is mounted on the fixed frame 6 via a bracket.

[0037] In this embodiment, the motor 41 drives the suction fan 42 to rotate, thereby generating negative pressure in the suction pipe, which draws the clean gas in the clean air chamber 11 into the suction fan 42, and then discharges it through the clean air discharge box 44. The movable cover 45 automatically opens upward under the impact of the airflow from bottom to top generated by the suction fan 42, and discharges the purified gas.

[0038] For further details, please refer to the appendix. Figure 2 The blowing device 5 includes a blower 51, a dust inlet 52, and a blowing pipe 53. One end of the blowing pipe 53 is connected to the filter chamber 12 through the dust-laden gas inlet 16, and the other end of the blowing pipe 53 is connected to the outlet of the blower 51. The inlet of the blower 51 is connected to the dust inlet 52 for sucking up the dust-laden gas and blowing the dust-laden gas into the filter chamber 12. The blower 51 is mounted on the fixed frame 6 by a bracket.

[0039] In this embodiment, the dust-laden gas generated after screening is drawn in from the dust inlet hopper 52 by the suction force generated by the blower 51, and then enters the filter chamber 12 through the blower pipe 53, thereby generating positive pressure in the filter chamber 12 and continuously disturbing the airflow in the filter chamber 12. After the dust is removed from the filter bag 32, it is not easy for it to re-adhere to the surface of the adjacent filter bag 32, which reduces the speed at which dust adheres and accumulates on the filter bag 32. Thus, the filter bag 32 can be cleaned without stopping the machine, reducing the problem of frequent shutdowns.

[0040] Furthermore, the compressed air storage tank 21 is connected to an external air compressor (not shown), and the solenoid valve 22 is a pulse solenoid valve. The compressed air storage tank 21 continuously supplies pulse compressed air to the filter bag device 3 through the solenoid valve 22.

[0041] Furthermore, the two suction devices 4 are arranged symmetrically along the center of the housing 1, and the suction fan 42 drives the suction pipe 43 to generate negative pressure in the clean air chamber 11, which is used to drive the purified gas to be discharged.

[0042] Furthermore, the airflow generated by the blower 51, after passing through the blower pipe 53, generates positive pressure in the filter chamber 12, thereby driving the dust-laden gas into the filter chamber 12 for filtration.

[0043] Furthermore, the ash hopper 17 is welded to the bottom of the housing 1 and is connected to the filter chamber 12. The heavier components in the dust-laden gas are discharged from the ash hopper 17 after settling.

[0044] This utility model is a multi-tube dust collector with positive and negative pressure linkage. By controlling the continuous operation of the suction device and the blowing device, positive pressure can be generated at the dust-laden gas inlet and negative pressure generated at the clean gas outlet, forming a positive and negative pressure linkage circulation duct in the box. The dust-laden gas flows more smoothly and the dust removal efficiency of the dust collector is improved.

[0045] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A multi-tube dust collector with positive and negative pressure linkage, characterized in that, Includes a housing (1); a clean air chamber (11) is formed on the upper side of the housing (1), and a filter chamber (12) is provided below the clean air chamber (11); an air storage device (2) is fixed on the outside of the clean air chamber (11); several filter bag devices (3) are arranged in an array inside the filter chamber (12), and an installation hole is opened on the bottom plate of the clean air chamber (11) corresponding to each filter bag device (3); multiple blow pipes (13) are provided inside the clean air chamber (11), and each blow pipe (13) is provided with a blow nozzle (14) above each filter bag device (3); each blow pipe (13) is provided with a blow nozzle (14) above each filter bag device (3); 3) All are connected to the gas storage device (2); clean gas outlets (15) are respectively opened on the two side walls of the clean gas chamber (11), and a suction device (4) is connected to the outside of each clean gas outlet (15) to generate negative pressure in the clean gas chamber (11); a dust-laden gas inlet (16) is opened on one side wall of the filter chamber (12), and a blowing device (5) is connected to the outside of the dust-laden gas inlet (16) to generate positive pressure in the filter chamber (12); a number of ash hoppers (17) are formed at the bottom of the filter chamber (12), and a fixing frame (6) is also connected to the bottom of the box (1).

2. The multi-tube dust collector with positive and negative pressure linkage according to claim 1, characterized in that, The air storage device (2) includes a compressed air storage tank (21) and a solenoid valve (22). The compressed air storage tank (21) is fixed to the side wall of the housing (1) by a bracket. The solenoid valve (22) is located between the blow pipe (13) and the compressed air storage tank (21). The inlet end of the solenoid valve (22) is connected to the compressed air storage tank (21), and the outlet end of the solenoid valve (22) is connected to the blow pipe (13). The solenoid valves (22) are evenly distributed along the compressed air storage tank (21) and are used to provide pulsed airflow to the blow pipe (13).

3. A multi-tube dust collector with positive and negative pressure linkage according to claim 1, characterized in that, The filter bag device (3) includes a filter bag frame (31) and a filter bag (32). The filter bag frame (31) is cylindrical in shape and is placed in the mounting hole of the bottom plate of the clean air chamber (11). The filter bag (32) is sleeved on the outside of the filter bag frame (31), and the center of the filter bag (32) is coaxial with the blow nozzle (14).

4. A multi-tube dust collector with positive and negative pressure linkage according to claim 1, characterized in that, The suction device (4) includes a motor (41), a suction fan (42), a suction pipe (43), and a clean air discharge box (44). The output end of the motor (41) is fixedly connected to the rotating shaft of the suction fan (42). The inlet end of the suction fan (42) is connected to the suction pipe (43) for sucking up clean gas from the clean air chamber (11). The outlet end of the suction fan (42) is connected to the clean air discharge box (44). The upper end of the suction pipe (43) is connected to the clean air chamber (11) through the clean air outlet (15). The top of the clean air discharge box (44) is also rotatably connected to a movable cover plate (45) via a hinge. The base of the motor (41) is mounted on the fixed frame (6) via a bracket.

5. A multi-tube dust collector with positive and negative pressure linkage according to claim 1, characterized in that, The blowing device (5) includes a blower (51), a dust inlet hopper (52) and a blowing pipe (53). One end of the blowing pipe (53) is connected to the filter chamber (12) through the dust-laden gas inlet (16), and the other end of the blowing pipe (53) is connected to the outlet of the blower (51). The inlet of the blower (51) is connected to the dust inlet hopper (52) for sucking up dust-laden gas and blowing the dust-laden gas into the filter chamber (12). The blower (51) is mounted on the fixed frame (6) by a bracket.

6. A multi-tube dust collector with positive and negative pressure linkage according to claim 2, characterized in that, The compressed air storage tank (21) is connected to an external air compressor, and the solenoid valve (22) is a pulse solenoid valve used to provide pulse compressed air to the filter bag device (3).

7. A multi-tube dust collector with positive and negative pressure linkage according to claim 4, characterized in that, Two suction devices (4) are arranged symmetrically along the center of the housing (1). The suction fan (42) drives the suction pipe (43) to generate negative pressure in the clean air chamber (11) to drive the purified gas to be discharged.

8. A multi-tube dust collector with positive and negative pressure linkage according to claim 5, characterized in that, The blower (51) drives the blow pipe (53) to generate positive pressure in the filter chamber (12) to drive the dust-laden gas into the filter chamber (12) for filtration.

9. A multi-tube dust collector with positive and negative pressure linkage according to claim 1, characterized in that, The ash hopper (17) is welded to the bottom of the box (1) and communicates with the filter chamber (12). The ash hopper (17) is used to discharge the heavier dust in the dust-containing gas.

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