Positive and negative pressure linked multi-tube dust remover

Abstract

The invention 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 pipe 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 without shutdown, 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] The invention relates to the field of grain filtering and storage, and in particular to a multi-tube dust collector with positive and negative pressure linkage. Background Art

[0002] In the process of grain collection, transportation, processing and storage, due to the influence of various environmental factors, various impurities are often mixed into the grain. The inorganic impurities in the grain include dust, sand, mud, stone, bricks and rubble, coal slag, glass slag and metal objects; organic impurities include plant roots, stems, leaves, shells, weed seeds, etc. Impurities have great harm to grain quality and safe production. Therefore, the grain needs to be screened and cleaned before storage. A large amount of dust and particles will be generated in the process of cleaning. The dust-containing gas generated in this process needs to be dedusted and purified before it can be discharged. During the operation of the existing pulse dust collector, the outlet pipe will be connected to the fan. When the fan is turned on, negative pressure will be formed in the box. The air containing dust enters the box from the inlet pipe. The air can pass through the filter bag and go out from the outlet. The dust will be isolated by the filter bag. After working for a period of time, the filter bag needs to be cleaned. During cleaning, the pulse controller will sequentially trigger each control valve to open the pulse valve, and air will be sprayed into the corresponding filter bag from the nozzle. The filter bag will expand rapidly in an instant, causing the dust accumulated on the surface of the filter bag to fall off, thereby realizing the cleaning of the filter bag.

[0003] The pulse bag dust collector mentioned above is often cleaned without stopping the machine in order not to affect the operation of other equipment during the cleaning process. Several groups of filter bags are cleaned first, and the remaining filter bags can filter normally and perform cleaning alternately. However, during the alternating cleaning process, some dust removed from the filter bags is easy to fall off the surface of the filter bags and then attach to the surface of the adjacent filter bags that have just been cleaned with the airflow, resulting in unsatisfactory cleaning effects. Frequent shutdowns for cleaning are required, resulting in low dust removal efficiency and making it difficult to apply to continuous grain storage operations. In addition, during the pulse reverse air cleaning process, the filter bags will swell rapidly, and there is a greater risk of cracking at the seams of the filter bags after long-term operation. Summary of the invention

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

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: The invention relates to a multi-tube dust collector with positive and negative pressure linkage, comprising a box body; a clean air chamber is formed on the upper side of the box body, and a filter chamber is arranged 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 distributed in an array inside the filter chamber, and a mounting hole is provided on the bottom plate of the clean air chamber corresponding to each of the filter bag devices; a plurality of blowing pipes are provided in the clean air chamber, and a blowing port is provided on each of the blowing pipes corresponding to the top of each of the filter bag devices; each of the blowing pipes is respectively connected with the air storage device; clean air outlets are respectively provided on both side walls of the clean air chamber, and an air suction device is connected to the outer side of each of the clean air outlets for generating negative pressure in the clean air chamber; a dust-containing gas inlet is provided on one side wall of the filter chamber, and a blowing device is connected to the outer side of the dust-containing gas inlet for generating positive pressure in the filter chamber; a plurality of ash hoppers are formed at the bottom of the filter chamber, and a fixing frame is also connected to the bottom of the box body.

[0006] As a preferred technical solution of the present invention, 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 enclosure body by a bracket, the solenoid valve is arranged 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, the outlet end of the solenoid valve is connected to the blow pipe, and the solenoid valves are evenly distributed along the compressed air storage tank for providing pulsed airflow to the blow pipe.

[0007] As a preferred technical solution of the present invention, 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 blowing port.

[0008] As a preferred technical solution of the present invention, 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 sucking clean gas in 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 through a hinge, and the motor base is installed on the fixed frame through a bracket.

[0009] As a preferred technical solution of the present invention, the blowing device includes a hair dryer, an ash hopper and a blowing pipe, one end of the blowing pipe is connected to the filter chamber through the dust-containing gas inlet, and the other end of the blowing pipe is connected to the outlet of the hair dryer; the inlet of the hair dryer is connected to the ash hopper for sucking the dust-containing gas and blowing the dust-containing gas into the filter chamber, and the hair dryer is installed on the fixed frame through a bracket.

[0010] As a preferred technical solution of the present invention, the compressed air storage tank is connected to an external air compressor, and the solenoid valve is a pulse solenoid valve for providing pulse compressed air to the filter bag device.

[0011] As a preferred technical solution of the present invention, the two suction devices are symmetrically arranged along the center of the box body, and the suction fan drives the suction pipe to generate negative pressure in the clean air chamber to drive the purified gas to be discharged.

[0012] As a preferred technical solution of the present invention, the hair dryer drives the blowing pipe to generate positive pressure in the filter chamber, which is used to drive the dust-containing gas into the filter chamber for filtration.

[0013] As a preferred technical solution of the present invention, the ash hopper is welded to the bottom of the box body and is connected to the filter chamber. The ash hopper is used to discharge heavier dust in the dust-containing gas.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The airflow in the filter chamber is continuously disturbed by the blowing device. After the dust is removed from the filter bag, it is not easy to re-attach to the surface of the adjacent filter bag, which reduces the speed of dust accumulation on the filter bag. Therefore, the filter bag can be cleaned without stopping the machine, reducing the frequent shutdown problem and the replacement frequency of the filter bag, which can play a good protective role on the dust removal filter bag; 2. 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 can be generated at the clean gas outlet, forming a circulating air duct with positive and negative pressure linkage in the box, and the dust-laden gas flows more smoothly, making the filter bag cleaning effect more ideal and improving the dust removal efficiency of the dust collector. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a front view of the present invention; Figure 3 is a side view of the present invention; Figure 4 is a side view of the present invention; Figure 5 It is a cross-sectional structural schematic diagram of the present invention; In the figure: 1. box body; 2. air storage device; 3. filter bag device; 4. air suction device; 5. blowing device; 6. fixing frame; 11. clean air chamber; 12. filter chamber; 13. blowing pipe; 14. blowing port; 15. clean air outlet; 16. dust-containing gas inlet; 17. ash 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. ash inlet; 53. blowing pipe. DETAILED DESCRIPTION

[0016] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0017] In the drawings, the same reference numerals all refer to the same components.

[0018] like Figure 1-5 As shown, the present invention provides a multi-tube dust collector with positive and negative pressure linkage, comprising a box body 1; a clean air chamber 11 is formed on the upper side of the box body 1, a filter chamber 12 is provided below the clean air chamber 11, and the clean air chamber 11 and the filter chamber 12 are separated by a bottom plate on the clean air chamber 11; An air storage device 2 is fixed outside the clean air chamber 11; a plurality of filter bag devices 3 are arranged in an array inside the filter chamber 12, and a mounting hole is provided on the bottom plate of the clean air chamber 11 corresponding to each filter bag device 3. The filter bag device 3 is used to filter the dust-containing gas flowing from the filter chamber 12 to the clean air chamber 11. The purified gas enters the clean air chamber 11, and solid particles such as dust are attached to the outer surface of the filter bag 32; A plurality of blowing pipes 13 are provided in the clean air chamber 11, and a blowing port 14 is provided on each blowing pipe 13 corresponding to the top of each filter bag device 3; each blowing pipe 13 is respectively connected to the air storage device 2, and a pulse airflow is generated on the inner surface of the filter bag 32 through the blowing port 14, so that the filter bag 32 is rapidly expanded and deformed, and dust on the surface of the filter bag 32 is shaken off; Clean air outlets 15 are respectively provided on the two side walls of the clean air chamber 11, and the outer side of each clean air outlet 15 is connected to an air suction device 4 for generating negative pressure in the clean air chamber 11; 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 a positive pressure in the filter chamber 12; A plurality 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 body 1 .

[0019] For further information, please see the attached 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 enclosure 1 through a bracket. The solenoid valve 22 is arranged between the blowing 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 blowing 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 blowing pipe 13.

[0020] In this embodiment, the compressed air storage tank 21 is connected to an external air compressor (not shown), and the solenoid valve 22 adopts a timed opening mode to control the compressed air storage tank 21 to provide a pulsed airflow to the injection pipe 13 connected thereto, thereby regularly injecting compressed air into the filter bag 32, so that the dust attached to the surface of the filter bag 32 is regularly detached from the surface of the filter bag 32 and falls off, and is discharged from the bottom of the ash hopper 17 after sedimentation.

[0021] For further information, please see the attached 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 in shape and is placed in the mounting hole of the bottom plate of the clean air chamber 2. 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 blowing port 14, which is used to regularly spray compressed gas into the filter bag 32 to shake off the dust on the outer surface of the filter bag 32.

[0022] For further information, please see the attached Figure 3 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 clean air in 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 42 is also rotatably connected to a movable cover plate 45 through a hinge, and the base of the motor 41 is installed on the fixed frame 6 through a bracket.

[0023] In this embodiment, the motor 41 drives the suction fan 42 to rotate, thereby generating negative pressure in the suction pipe, sucking the clean gas in the clean air chamber 11 into the suction fan 42, and then discharging it through the clean air discharge box 44. The movable cover 45 automatically opens upward under the impact of the bottom-up airflow generated by the suction fan 42 to discharge the purified gas.

[0024] For further information, please see the attached Figure 2The blowing device 5 includes a hair dryer 51, an ash hopper 52 and a blowing pipe 53. One end of the blowing pipe 53 is connected to the filter chamber 12 through the dust-containing gas inlet 16, and the other end of the blowing pipe 53 is connected to the outlet of the hair dryer 51; the inlet of the hair dryer 51 is connected to the ash hopper 52, which is used to absorb the dust-containing gas and blow the dust-containing gas into the filter chamber 12. The hair dryer 51 is installed on the fixed frame 6 through a bracket.

[0025] In this embodiment, the dust-containing gas generated after screening enters the ash hopper 52 due to the suction force generated by the hair dryer 51, and then enters the filter chamber 12 through the blowing pipe 53, thereby generating positive pressure in the filter chamber 12, continuously disturbing the airflow in the filter chamber 12, and the dust is not easy to re-attach to the surface of the adjacent filter bag 32 after being removed from the filter bag 32, thereby reducing the speed of dust adhesion and accumulation on the filter bag 32, so that the filter bag 32 can be cleaned without stopping the machine, thereby reducing the problem of frequent shutdowns.

[0026] 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 provides pulse compressed air to the filter bag device 3 through the solenoid valve 22 .

[0027] Furthermore, the two air suction devices 4 are symmetrically arranged along the center of the box body 1, and the air suction fan 42 drives the air suction pipe 43 to generate negative pressure in the clean air chamber 11, which is used to drive the purified gas to be discharged.

[0028] Furthermore, the airflow generated by the blower 51 generates positive pressure in the filter chamber 12 after passing through the blow pipe 53 , thereby driving the dust-containing gas into the filter chamber 12 for filtration.

[0029] Furthermore, the ash hopper 17 is welded to the bottom of the box body 1 and is connected to the filter chamber 12 . The heavier components in the dust-containing gas are discharged from the ash hopper 17 after sedimentation.

[0030] The present invention 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 can be generated at the clean gas outlet, forming a circulating air duct with positive and negative pressure linkage in the box, so that the dust-laden gas circulates more smoothly and the dust removal efficiency of the dust collector is improved.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A multi-tube dust collector with positive and negative pressure linkage, characterized in that: The invention comprises a box body (1); a clean air chamber (11) is formed on the upper side of the box body (1), and a filter chamber (12) is provided below the clean air chamber (11); an air storage device (2) is fixed outside the clean air chamber (11); a plurality of filter bag devices (3) are arranged in an array inside the filter chamber (12), and a mounting hole is provided on the bottom plate of the clean air chamber (11) corresponding to each of the filter bag devices (3); a plurality of blowing pipes (13) are provided inside the clean air chamber (11), and a blowing port (14) is provided on each of the blowing pipes (13) corresponding to the top of each of the filter bag devices (3); each of the blowing pipes (1 3) are respectively connected to the gas storage device (2); clean air outlets (15) are respectively provided on the two side walls of the clean air chamber (11), and each of the clean air outlets (15) is connected to an air suction device (4) on the outside for generating negative pressure in the clean air chamber (11); a dust-containing gas inlet (16) is provided on one side wall of the filter chamber (12), and the dust-containing gas inlet (16) is connected to an air blowing device (5) on the outside for generating positive pressure in the filter chamber (12); a plurality 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 body (1).

2. The multi-tube dust collector with positive and negative pressure linkage according to claim 1 is characterized in that: The air storage device (2) comprises 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) via a bracket; the solenoid valve (22) is arranged between the blowing 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); the outlet end of the solenoid valve (22) is connected to the blowing pipe (13); the solenoid valve (22) is evenly distributed along the compressed air storage tank (21) and is used to provide a pulsed airflow to the blowing pipe (13).

3. The multi-tube dust collector with positive and negative pressure linkage according to claim 1 is characterized in that: The filter bag device (3) comprises a filter bag frame (31) and a filter bag (32); the filter bag frame (31) is cylindrical in shape and is placed in a mounting hole of a bottom plate of the clean air chamber (2); the filter bag (32) is sleeved on the outside of the filter bag frame (31); and the center of the filter bag (32) is coaxially arranged with the blowing port (14).

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

5. The multi-tube dust collector with positive and negative pressure linkage according to claim 1 is characterized in that: The blowing device (5) comprises a blower (51), an ash inlet (52) and a blow pipe (53); one end of the blow pipe (53) is connected to the filter chamber (12) via the dust-containing gas inlet (16), and the other end of the blow pipe (53) is connected to the outlet of the blower (51); the inlet of the blower (51) is connected to the ash inlet (52) for absorbing dust-containing gas and blowing the dust-containing gas into the filter chamber (12); the blower (51) is mounted on the fixing frame (6) via a bracket.

6. The multi-tube dust collector with positive and negative pressure linkage according to claim 2 is characterized in that: The compressed air storage tank (21) is in communication with 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. The multi-tube dust collector with positive and negative pressure linkage according to claim 4 is characterized in that: The two air suction devices (4) are symmetrically arranged along the center of the box body (1), and the air suction fan (42) drives the air suction pipe (43) to generate negative pressure in the clean air chamber (11) to drive the purified gas to be discharged.

8. The multi-tube dust collector with positive and negative pressure linkage according to claim 5, characterized in that: The blower (51) drives the blowing pipe (53) to generate positive pressure in the filter chamber (12), so as to drive the dust-containing gas to enter the filter chamber (12) for filtration.

9. The 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 body (1) and is connected to the filter chamber (12); the ash hopper (17) is used to discharge heavier dust in the dust-containing gas.

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