A feed processing plant bag dust removal device

Abstract

The application provides a feed processing workshop cloth bag dust removal device, and relates to the technical field of dust removal equipment. The device comprises a box body, the bottom end of the box body is fixedly connected with an air inlet pipe, the inner wall of the top of the box body is fixedly provided with a partition plate, an air outlet cavity is formed between the upper surface of the partition plate and the inner top wall of the box body, the top end of the box body is fixedly connected with an air outlet pipe, the air outlet pipe is connected with the air outlet cavity, and a plurality of filter bag cylinders are fixedly arranged on the middle part of the partition plate. The device can introduce high-pressure air into the guide air pipe, rotate and blow the inner wall of the filter bag cylinder through the arc-shaped air jet pipe, and ensure the cleaning effect of the filter bag cylinder. In addition, the high air pressure in the guide air pipe can also drive the piston block and the magnet block to move downward at the same time, the piston block drives a plurality of annular brushes to clean the outer surface of the filter bag cylinder, effectively removes the dust accumulated on the outer surface of the filter bag cylinder, and further improves the cleaning effect of the filter bag cylinder.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of dust removal equipment, in particular to a bag filter for feed processing workshop. BACKGROUND

[0002] The bag filter is a kind of dry filter dust device, the filter bag is made of filter cloth, the dust-containing gas is filtered by the filter cloth, the dust with large particle size and specific gravity is settled down due to gravity, and the gas containing fine dust is purified by blocking the dust when passing through the filter bag. It is widely used in dust removal operation in the fields of mine, cement and feed processing.

[0003] After a period of use, a layer of dust is accumulated on the surface of the filter bag due to the effects of screening, collision, retention, diffusion and static electricity. As the dust accumulates on the surface of the filter material, the dust removal efficiency is continuously reduced, and the resistance is also continuously increased. When the pressure difference between the inside and outside of the filter bag is large, the filter bag is cleaned by the dust cleaning mechanism.

[0004] The dust cleaning mechanism is composed of a gas bag, a blowing pipe and an electromagnetic pulse control valve. A blowing pipe is arranged at the top of the outlet of each row of filter bags in the filter chamber, and a blowing port is arranged opposite to the center of the filter bag on the lower side of the blowing pipe. A pulse valve is arranged on each blowing pipe and communicates with the compressed air gas bag. When cleaning, the pulse electromagnetic valve is opened, and high-pressure air is blown into the inside of the filter bag through the blowing port, so that the air pressure in the filter bag is suddenly increased, and the dust accumulated outside the filter bag is removed.

[0005] The bag filter applied to the feed processing workshop is prone to mold and adhesion of the dust accumulated on the filter bag in the warm and humid season. Therefore, the cleaning effect of the conventional blowing pipe dust cleaning mechanism on the filter bag is poor, the pores of the filter bag are easily blocked, and the filter bag needs to be replaced frequently, which is high in use cost. Therefore, the bag filter for feed processing workshop is provided. SUMMARY

[0006] The present application provides the following technical scheme to solve the above technical problems: a bag filter for feed processing workshop, comprising a box body, a gas inlet pipe is fixedly connected to the bottom end of the box body, an inner wall of the top of the box body is fixedly provided with a partition plate, an air outlet cavity is formed between the upper surface of the partition plate and the inner top wall of the box body, an air outlet pipe is fixedly connected to the top end of the box body and communicates with the air outlet cavity, a plurality of filter bag barrels are fixedly arranged in the middle of the partition plate, the filter bag barrel is composed of a cloth bag barrel and a hard mesh barrel fixedly sleeved in the cloth bag barrel, a fixed plate is fixedly arranged at the bottom end of the filter bag barrel, and the top end of the filter bag barrel communicates with the air outlet cavity.

[0007] The cleaning mechanism comprises a gas guide pipe arranged inside the filter bag cylinder, the top of the gas guide pipe is fixed to the inner wall of the filter bag cylinder through a fixing frame, the bottom end of the gas guide pipe is fixed to the middle of the fixing plate, a plurality of shunt holes are arranged in the middle of the gas guide pipe, a sleeve pipe is rotatably sleeved on the outer surface of the gas guide pipe, and the sleeve pipe can slide up and down on the outer surface of the gas guide pipe, the outer surface of the sleeve pipe is fixedly connected with two rows of arc-shaped air jet pipes, and the two rows of arc-shaped air jet pipes are symmetrically arranged about the central axis of the gas guide pipe.

[0008] The cleaning mechanism further comprises a piston cylinder fixed to the bottom of the fixing plate and connected with the bottom end of the gas guide pipe, a piston block is slidably arranged in the piston cylinder, the bottom surface of the piston block is fixed with a piston rod, the bottom end of the piston rod extends below the piston cylinder and is fixed with a ring-shaped frame, a tension spring is fixed between the top of the piston cylinder and the ring-shaped frame, a group of pull rods are fixed at the edge of the ring-shaped frame, a plurality of ring-shaped brushes arranged in an equidistant vertical array are fixed between the group of pull rods, and the ring-shaped brushes are slidably sleeved on the outer surface of the filter bag cylinder.

[0009] When the ring-shaped brushes move downward to clean the outer surface of the filter bag cylinder, the sleeve pipe and the arc-shaped air jet pipes can also sway up and down.

[0010] Specifically, an iron ring is fixed to the inner wall of the bottom of the sleeve pipe and slidably sleeved on the outer surface of the gas guide pipe, a swivel ring is rotatably sleeved on the top end and the bottom end of the sleeve pipe, a compression spring is fixed to the side face of each swivel ring away from the other swivel ring, the two compression springs are sleeved on the outside of the gas guide pipe, and the ends of the two compression springs away from the sleeve pipe are in sliding contact with the fixing frame and the fixing plate respectively, a connecting rod is fixed to the top surface of the piston block, the top end of the connecting rod extends into the gas guide pipe and is fixed with a magnet block, and the position of the magnet block corresponds to the position of the iron ring.

[0011] Further, a high-pressure gas bag is arranged outside the box, an electromagnetic valve is connected to the high-pressure gas bag, the output end of the electromagnetic valve is connected to the top end of the gas guide pipe through a high-pressure hose, the electromagnetic valve is electrically connected with an external controller, and a dust discharge valve is fixedly connected to the bottom of the box.

[0012] Further, an iron sheet hopper is fixed to the inner wall of the lower part of the box, the air inlet pipe extends into the box through the opening in the bottom of the iron sheet hopper and extends above the iron sheet hopper.

[0013] A support frame is arranged above the iron sheet hopper, the top of the air inlet pipe is fixed to the inner wall of the box through the support frame, a first conical hopper is sleeved on the top end of the air inlet pipe, an opening is arranged in the top end of the first conical hopper, a second conical hopper is arranged above the first conical hopper, and the first conical hopper and the second conical hopper are fixed to the support frame.

[0014] Further, the upper part of the air outlet of the air inlet pipe is provided with a cover plate, the inner wall of the top end of the air inlet pipe is fixedly provided with a support, a sliding rod is slidably arranged at the middle part of the support, a stop block is fixedly arranged at the bottom end of the sliding rod, and the top end of the sliding rod is fixedly arranged on the bottom surface of the cover plate.

[0015] Compared with the prior art, the bag dust removal device for the feed processing workshop has the following beneficial effects:

[0016] I. The bag dust removal device for the feed processing workshop, high-pressure air is introduced into the air guide pipe, so that the arc-shaped air jet pipe can rotate and blow the inner wall of the filter bag cylinder, thereby ensuring the cleaning effect of the filter bag cylinder; at the same time, due to the high air pressure in the air guide pipe, the piston block and the magnet block can be simultaneously moved downward, the piston block drives the plurality of annular brushes to clean the outer surface of the filter bag cylinder, thereby effectively removing the dust accumulated on the outer surface of the filter bag cylinder, further improving the cleaning effect of the filter bag cylinder, and thereby ensuring the dust removal effect and reducing the replacement frequency of the filter bag cylinder.

[0017] II. When high-pressure air is introduced into the air guide pipe of the bag dust removal device for the feed processing workshop, the magnet block moves downward, the magnetic attraction force between the magnet block and the iron ring can drive the sleeve and the plurality of arc-shaped air jet pipes to suddenly move downward, and the elastic force of the compression spring can make the sleeve and the arc-shaped air jet pipes swing up and down under the action of inertia, that is, the arc-shaped air jet pipe can rotate and blow the inner wall of the filter bag cylinder, and at the same time, the up-and-down swinging of the arc-shaped air jet pipe can improve the coverage range of the arc-shaped air jet pipe for blowing the inner wall of the filter bag cylinder, so that the arc-shaped air jet pipe can more comprehensively blow the inner wall of the filter bag cylinder, that is, the concentrated airflow at the air outlet of the filter bag cylinder can more comprehensively sweep the inner wall of the filter bag cylinder, thereby further improving the cleaning effect of the filter bag cylinder.

[0018] Other advantages, objects, and features of the present application will be apparent to those skilled in the art from the following specification, in some degree of certainty, and in some degree of certainty, based on the study of the following, or can be taught from the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a schematic diagram of the three-dimensional structure of the present application;

[0020] Figure 2 is a schematic diagram of the three-dimensional structure of the inside of the box in the present application Figure 1 ;

[0021] Figure 3 is a schematic diagram of the three-dimensional structure of the inside of the box in the present application Figure 2 ;

[0022] Figure 4 is a schematic diagram of the cross-sectional structure of the box in the present application;

[0023] Figure 5 Figure 1 is a perspective view of the filter bag cylinder and cleaning mechanism of the present application;

[0024] Figure 6 Figure 2 is a perspective view of the single filter bag cylinder and cleaning mechanism of the present application;

[0025] Figure 7 Figure 3 is a perspective view of the filter bag cylinder of the present application;

[0026] Figure 8 Figure 4 is a cross-sectional view of the filter bag cylinder and cleaning mechanism of the present application;

[0027] Figure 9 Figure 5 is a partial cross-sectional view of the filter bag cylinder and cleaning mechanism of the present application;

[0028] Figure 10 Figure 6 is a partial perspective view of the cleaning mechanism of the present application;

[0029] Figure 11 Figure 7 is a cross-sectional view of the bottom of the box of the present application;

[0030] Figure 12 Figure 8 is a cross-sectional view of the top end of the air inlet pipe of the present application.

[0031] In the figure:

[0032] 1. Box

[0033] 2. Air inlet pipe; 21. Cover plate; 22. Support; 23. Slide rod; 24. Stop block

[0034] 3. Partition; 4. Air outlet pipe

[0035] 5. Filter bag cylinder; 51. Cloth bag cylinder; 52. Hard mesh cylinder; 53. Fixing plate

[0036] 6. Cleaning mechanism; 61. Air guide pipe; 62. Fixing frame; 63. Shunt hole; 64. Sleeve; 65. Arc-shaped air jet pipe; 66. Piston cylinder; 67. Piston block; 68. Piston rod; 69. Ring-shaped frame; 610. Tension spring; 611. Pull rod; 612. Ring-shaped brush; 613. Iron ring; 614. Swivel ring; 615. Compression spring; 616. Linking rod; 617. Magnet block

[0037] 7. High-pressure air bag; 71. Solenoid valve; 72. High-pressure hose

[0038] 8. Dust discharge valve; 9. Iron sheet hopper; 10. Support frame; 11. First conical hopper; 12. Second conical hopper DETAILED DESCRIPTION

[0039] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0040] With reference to Figures 1-12 The present application provides the following embodiment: a feed processing plant cloth bag dust removal device, including box 1, the bottom end of box 1 is fixedly connected with air inlet pipe 2, the inner wall of the top of box 1 is fixedly connected with partition plate 3, the upper surface of partition plate 3 and the inner top wall of box 1 form an air outlet cavity, the top end of box 1 is fixedly connected with air outlet pipe 4, and air outlet pipe 4 is connected with air outlet cavity.

[0041] A plurality of filter bag barrels 5 are fixedly connected to the middle of partition plate 3, the filter bag barrel 5 is composed of a cloth bag barrel 51 and a hard mesh barrel 52 fixedly sleeved in the cloth bag barrel 51, the hard mesh barrel 52 is a cylindrical shape, which provides hard support for the cloth bag barrel 51, and the bottom end of the filter bag barrel 5 is fixedly connected with a fixed plate 53 (as shown in Figure 7 The top end of the filter bag barrel 5 is connected with the air outlet cavity.

[0042] The air to be filtered enters the inside of box 1 through air inlet pipe 2, the dust with large specific gravity in the air settles at the bottom of box 1, and the fine dust is filtered and intercepted by the plurality of filter bag barrels 5 to realize the purification of the air, and the purified air is discharged to the outside of box 1 through air outlet pipe 4.

[0043] With reference to Figures 5-10 A cleaning mechanism 6 is arranged on each filter bag barrel 5, the cleaning mechanism 6 includes a gas guide pipe 61 arranged in the filter bag barrel 5, the top of the gas guide pipe 61 is fixedly connected with the inner wall of the filter bag barrel 5 through a fixing frame 62, the bottom end of the gas guide pipe 61 is fixedly connected with the middle of the fixed plate 53, a plurality of shunt holes 63 are arranged in the middle of the gas guide pipe 61, a sleeve pipe 64 is rotatably sleeved on the outer surface of the gas guide pipe 61, the sleeve pipe 64 can slide up and down on the outer surface of the gas guide pipe 61, and the sleeve pipe 64 and the outer surface of the gas guide pipe 61 form a nearly sealed cylindrical gas guide cavity. Two rows of arc-shaped air injection pipes 65 are fixedly connected with the outer surface of the sleeve pipe 64, and the two rows of arc-shaped air injection pipes 65 are symmetrically arranged about the central axis of the gas guide pipe 61.

[0044] When high-pressure air is introduced into the air guide pipe 61, the high-pressure air enters the sleeve pipe 64 through the shunt hole 63 and is sprayed out through the plurality of arc-shaped air jets 65 to spray and blow the inner wall of the filter bag cylinder 5, which is conducive to blowing out the dust clogging in the gap of the filter bag cylinder 5 and causing the dust accumulated on the outer wall of the filter bag cylinder 5 to fall off; at the same time, since the arc-shaped air jets 65 are arc-shaped, when the inner wall of the filter bag cylinder 5 is sprayed and blown, the sleeve pipe 64 and the arc-shaped air jets 65 rotate together, which can rotate and spray the inner wall of the filter bag cylinder 5 to ensure the cleaning effect of the filter bag cylinder 5.

[0045] The cleaning mechanism 6 further comprises a piston cylinder 66 fixed at the bottom of the fixed plate 53, and the piston cylinder 66 is in communication with the bottom end of the air guide pipe 61. A piston block 67 is slidably arranged in the piston cylinder 66. A piston rod 68 is fixed to the bottom surface of the piston block 67. The bottom end of the piston rod 68 extends below the piston cylinder 66 and is fixed with a ring-shaped frame 69. A tension spring 610 is fixed between the top of the piston cylinder 66 and the ring-shaped frame 69. A group of pull rods 611 are fixed at the edge of the ring-shaped frame 69. A plurality of ring-shaped brushes 612 arranged in an equidistant vertical array are fixed between the group of pull rods 611. The ring-shaped brushes 612 are slidably sleeved on the outer surface of the filter bag cylinder 5. The tension spring 610 provides an upward pulling force for the ring-shaped frame 69, so that the plurality of ring-shaped brushes 612 are in a high position in a natural state.

[0046] When high-pressure air is introduced into the air guide pipe 61, the piston block 67, the piston rod 68, the ring-shaped frame 69, the pull rods 611 and the ring-shaped brushes 612 move downward together, so that the outer surface of the filter bag cylinder 5 can be cleaned by the plurality of ring-shaped brushes 612, which can effectively brush off the dust accumulated on the outer surface of the filter bag cylinder 5, further improving the cleaning effect of the filter bag cylinder 5, thereby ensuring the dust removal effect and reducing the replacement frequency of the filter bag cylinder 5.

[0047] When the ring-shaped brushes 612 move downward to clean the outer surface of the filter bag cylinder 5, the sleeve pipe 64 and the arc-shaped air jets 65 can also move up and down.

[0048] Specifically, an iron ring 613 is fixed to the inner wall of the bottom of the sleeve pipe 64 and is slidably sleeved on the outer surface of the air guide pipe 61. A rotating ring 614 is rotatably sleeved at the top end and the bottom end of the sleeve pipe 64. A compression spring 615 is fixed to the side surface of each of the two rotating rings 614 away from each other. The two compression springs 615 are sleeved on the outside of the air guide pipe 61, and the ends of the two compression springs 615 away from the sleeve pipe 64 are in sliding contact with the fixed frame 62 and the fixed plate 53, respectively. A connecting rod 616 is fixed to the top surface of the piston block 67. A magnet block 617 is fixed to the top end of the connecting rod 616 and extends into the air guide pipe 61. The position of the magnet block 617 corresponds to the position of the iron ring 613. In order to ensure that the magnet block 617 and the iron ring 613 have reliable magnetic attraction, the magnet block 617 can be made of neodymium iron boron.

[0049] In summary, when high-pressure air is introduced into the air guide pipe 61, the inner wall of the filter bag cylinder 5 can be rotated and sprayed, ensuring the cleaning effect of the filter bag cylinder 5. At the same time, due to the high pressure in the air guide pipe 61, the piston block 67 and the magnet block 617 can also be pushed to move downward at the same time, the piston block 67 drives the multiple annular brushes 612 to clean the outer surface of the filter bag cylinder 5, which can effectively brush off the dust accumulated on the outer surface of the filter bag cylinder 5, further improving the cleaning effect of the filter bag cylinder 5. When the magnet block 617 moves downward, the magnetic attraction between the magnet block 617 and the iron ring 613 can also drive the sleeve pipe 64 and the multiple arc-shaped air pipes 65 to move downward suddenly, and the elastic force of the compression spring 615 can make the sleeve pipe 64 and the arc-shaped air pipes 65 swing up and down under the action of inertia, that is, by combining the rotation and spraying of the arc-shaped air pipes 65 on the inner wall of the filter bag cylinder 5 with the up-and-down swinging of the arc-shaped air pipes 65, the coverage of the spraying of the arc-shaped air pipes 65 on the inner wall of the filter bag cylinder 5 can be improved, so that the arc-shaped air pipes 65 can spray the inner wall of the filter bag cylinder 5 more comprehensively, that is, the concentrated airflow at the outlet of the filter bag cylinder 5 can sweep the inner wall of the filter bag cylinder 5 more comprehensively, further improving the cleaning effect of the filter bag cylinder 5.

[0050] The box body 1 is externally provided with a high-pressure air tank 7, the high-pressure air tank 7 is communicated with an electromagnetic valve 71, the output end of the electromagnetic valve 71 is communicated with the top end of the air guide pipe 61 through a high-pressure hose 72, and the electromagnetic valve 71 is electrically connected with an external controller. The high-pressure air tank 7 is filled with high-pressure air by using an external high-pressure air pump, and when the filter bag cylinder 5 needs to be cleaned, the working state of the electromagnetic valve 71 is controlled by the controller to provide pulse airflow to the air guide pipe 61, for example, the pulse frequency can be set as: 3 seconds on-3 seconds off-3 seconds on-3 seconds off……Of course, higher pulse frequencies can also be set on the basis of the pulse frequency to achieve the effect of vibration and realize the above-mentioned cleaning work.

[0051] In addition, it should be noted that during the cleaning process of the device, part of the high-pressure gas in the air guide pipe 61 will be sprayed out through the multiple arc-shaped air pipes 65, which will cause the air pressure at the bottom of the air guide pipe 61 to decrease, thereby reducing the pushing force on the piston block 67. To ensure that the pushing force on the piston block 67 is sufficient to overcome the remaining tension of the tension spring 610, the magnetic attraction between the magnet block 617 and the iron ring 613, and the system friction, the inner diameter of the piston cylinder 66 and the cross-sectional area of the piston block 67 can be further increased, or the air pressure of the high-pressure air tank 7 can be increased, the elastic coefficient of the tension spring 610 can be adjusted, and in addition, lightweight materials can be used to reduce the system weight of the cleaning mechanism 6, so as to ensure that the air pressure at the bottom of the air guide pipe 61 can push the piston block 67 and the magnet block 617 to move downward at the same time, and the piston block 67 drives the multiple annular brushes 612 to clean the outer surface of the filter bag cylinder 5.

[0052] The bottom of the box 1 is fixedly communicated with a dust discharging valve 8, through which the dust accumulated at the bottom of the box 1 is discharged to the lower side of the box 1, and then the accumulated dust is centrally treated.

[0053] Please refer to Figure 2 , Figure 4 , Figure 11 and Figure 12 , as further solutions:

[0054] The inner wall of the lower part of the box 1 is fixedly provided with an iron sheet hopper 9, the air inlet pipe 2 extends to the inside of the box 1 through the opening at the bottom of the iron sheet hopper 9 and extends to the upper side of the iron sheet hopper 9. The dust in the box 1 slides to the bottom of the box 1 through the iron sheet hopper 9, and the air convection above and below the iron sheet hopper 9 is weakened through the iron sheet hopper 9, so as to avoid the dust accumulated at the bottom of the box 1 from being lifted up under the action of the air flow.

[0055] The upper side of the iron sheet hopper 9 is provided with a support frame 10, the top of the air inlet pipe 2 is fixed to the inner wall of the box 1 through the support frame 10, the top end of the air inlet pipe 2 is sleeved with a first conical hopper 11, the top end of the first conical hopper 11 is provided with an opening, the upper side of the first conical hopper 11 is provided with a second conical hopper 12, and the first conical hopper 11 and the second conical hopper 12 are fixed to the support frame 10. The air flow velocity above the gas outlet at the top end of the air inlet pipe 2 is reduced, which is conducive to the settlement of the dust with large specific gravity.

[0056] The upper side of the gas outlet of the air inlet pipe 2 is provided with a cover plate 21, the inner wall of the top end of the air inlet pipe 2 is fixedly provided with a support 22, the middle part of the support 22 is slidingly provided with a sliding rod 23, the bottom end of the sliding rod 23 is fixedly provided with a stop block 24, and the top end of the sliding rod 23 is fixed to the bottom surface of the cover plate 21. Through the scheme, the gas outlet of the air inlet pipe 2 forms a one-way valve structure, so as to avoid the dust in the box 1 from entering the inside of the air inlet pipe 2.

[0057] It is apparent for those skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but rather can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary and not limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and range of the equivalent elements of the claims are intended to be embraced therein.

Claims

1. A bag filter dust collector for a feed processing workshop, comprising a housing (1), wherein an air inlet pipe (2) is fixedly connected to the bottom end of the housing (1), characterized in that: The inner wall of the top of the box (1) is fixed with a partition (3), and the top of the box (1) is fixedly connected with an air outlet pipe (4). Multiple filter bag cylinders (5) are fixed in the middle of the partition (3). The filter bag cylinder (5) is composed of a cloth bag cylinder and a rigid mesh cylinder fixedly fitted inside the cloth bag cylinder. A fixing plate (53) is fixed at the bottom of the filter bag cylinder (5). Each of the filter bag cylinders (5) is provided with a cleaning mechanism (6). The cleaning mechanism (6) includes an air guide pipe (61) disposed inside the filter bag cylinder (5). The top of the air guide pipe (61) is fixed to the inner wall of the filter bag cylinder (5) by a fixing bracket (62). The bottom end of the air guide pipe (61) is fixed to the middle of the fixing plate (53). Multiple diversion holes (63) are opened in the middle of the air guide pipe (61). A sleeve (64) is rotatably sleeved on the outer surface of the air guide pipe (61). The sleeve (64) can slide up and down on the outer surface of the air guide pipe (61). Two rows of arc-shaped jet pipes (65) are fixedly connected to the outer surface of the sleeve (64). The cleaning mechanism (6) also includes a piston cylinder (66) fixed to the bottom of the fixing plate (53), and the piston cylinder (66) is connected to the bottom end of the air guide pipe (61). A piston block (67) is slidably arranged inside the piston cylinder (66). A piston rod (68) is fixed to the bottom surface of the piston block (67). The bottom end of the piston rod (68) extends to the bottom of the piston cylinder (66) and is fixed to an annular frame (69). A tension spring (610) is fixed between the annular frame (69) and the top of the piston cylinder (66). A set of pull rods (611) is fixed at the edge of the annular frame (69). A plurality of annular brushes (612) arranged in a vertical array at equal distances are fixed between the set of pull rods (611). The annular brushes (612) are slidably sleeved on the outer surface of the filter bag cylinder (5). When the annular brush (612) moves downward to clean the outer surface of the filter bag cylinder (5), it can also make the sleeve (64) and the arc-shaped jet pipe (65) shake up and down. The inner wall of the bottom of the sleeve (64) is fixed with an iron ring (613), and the iron ring (613) is slidably sleeved on the outer surface of the air guide tube (61). The top and bottom ends of the sleeve (64) are rotatably sleeved with rotating rings (614). The two rotating rings (614) are fixed with compression springs (615) on the side away from each other. The two compression springs (615) are sleeved on the outside of the air guide tube (61), and the ends of the two compression springs (615) away from the sleeve (64) are slidably in contact with the fixing frame (62) and the fixing plate (53) respectively. The top surface of the piston block (67) is fixed with a connecting rod (616). The top end of the connecting rod (616) extends into the interior of the air guide tube (61) and is fixed with a magnet block (617). The position of the magnet block (617) corresponds to the position of the iron ring (613).

2. The bag filter dust collector for a feed processing workshop according to claim 1, characterized in that: The box (1) is equipped with a high-pressure air tank (7) on the outside. A solenoid valve (71) is connected to the high-pressure air tank (7). The output end of the solenoid valve (71) is connected to the top of the air guide pipe (61) through a high-pressure hose (72).

3. The bag filter dust collector for a feed processing workshop according to claim 2, characterized in that: The solenoid valve (71) is electrically connected to an external controller, and a dust discharge valve (8) is fixedly connected to the bottom of the housing (1).

4. The bag filter dust collector for a feed processing workshop according to claim 1, characterized in that: The inner wall of the lower part of the box (1) is fixed with a sheet metal bucket (9), and the air inlet pipe (2) extends into the interior of the box (1), passes through the opening at the bottom of the sheet metal bucket (9), and extends to the top of the sheet metal bucket (9).

5. A bag filter dust collector for a feed processing workshop according to claim 4, characterized in that: A support frame (10) is provided above the sheet metal bucket (9). The top of the air inlet pipe (2) is fixed to the inner wall of the box (1) through the support frame (10). A first cone bucket (11) is sleeved on the top of the air inlet pipe (2). The top of the first cone bucket (11) has an opening. A second cone bucket (12) is provided above the first cone bucket (11). Both the first cone bucket (11) and the second cone bucket (12) are fixed to the support frame (10).

6. The bag filter dust collector for a feed processing workshop according to claim 1, characterized in that: The air inlet (2) is provided with a cover plate (21) above the air outlet. A bracket (22) is fixed on the inner wall of the top of the air inlet (2). A slide rod (23) is slidably provided in the middle of the bracket (22). A stop block (24) is fixed at the bottom of the slide rod (23). The top of the slide rod (23) is fixed on the bottom surface of the cover plate (21).

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