Cloth bag dust removal device for feed processing workshop

Abstract

The invention provides a feed processing workshop cloth bag dust removal device, and relates to the technical field of dust removal equipment.The feed processing workshop cloth bag dust removal device comprises a box body, the bottom end of the box body fixedly communicates with an air inlet pipe, a partition plate is fixed to the inner wall of the top of the box body, an air outlet cavity is formed between the upper surface of the partition plate and the inner top wall of the box body, and the top end of the box body fixedly communicates with an air outlet pipe; the air outlet pipe is communicated with the air outlet cavity; and a plurality of filter bag cylinders are fixed in the middle of the partition plate. According to the cloth 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 spraying pipe can perform rotary spraying on the inner wall of the filter bag cylinder, and the cleaning effect on the filter bag cylinder is ensured; meanwhile, due to the fact that the air pressure in the air guide pipe is large, a piston block and a magnet block can be pushed to move downwards at the same time, the piston block drives a plurality of annular brushes to clean the outer surface of the filter bag cylinder, dust accumulated outside the filter bag cylinder can be effectively brushed away, and the cleaning effect on the filter bag cylinder is further improved.

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 at 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: I. The bag dust removal device for the feed processing workshop, high-pressure air is introduced into the guide air 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 guide air pipe, the piston block and the magnet block can be simultaneously moved downward, the piston block drives the multiple 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 reducing the replacement frequency of the filter bag cylinder.

[0016] II. When high-pressure air is introduced into the guide air pipe, the magnet block moves downward, the magnetic attraction force between the magnet block and the iron ring can drive the sleeve and the multiple 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 the up-and-down swinging of the arc-shaped air jet pipe can improve the coverage range of the arc-shaped air jet pipe 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.

[0017] 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

[0018] Figure 1 is a schematic diagram of the three-dimensional structure of the present application; Figure 2 is a schematic diagram of the three-dimensional structure of the box body in the present application Figure 1 ; Figure 3 is a schematic diagram of the three-dimensional structure of the box body in the present application Figure 2 ; Figure 4 is a schematic diagram of the three-dimensional structure of the box body in the present application Figure 5 is a schematic diagram of the three-dimensional structure of the box body in the present application Figure 6It is the three-dimensional structure schematic diagram of single filter bag cylinder and cleaning mechanism in the application; Figure 7 It is the three-dimensional structure schematic diagram of filter bag cylinder in the application; Figure 8 It is the front section structure schematic diagram of filter bag cylinder and cleaning mechanism in the application; Figure 9 It is the local front section structure schematic diagram of filter bag cylinder and cleaning mechanism in the application; Figure 10 It is the local structure three-dimensional diagram of cleaning mechanism in the application; Figure 11 It is the section structure schematic diagram of box bottom in the application; Figure 12 It is the section structure schematic diagram of air inlet pipe top end in the application.

[0019] In the figure: 1, box; 2, air inlet pipe; 21, cover plate; 22, support; 23, sliding rod; 24, stop block; 3, partition; 4, air outlet pipe; 5, filter bag cylinder; 51, cloth bag cylinder; 52, hard mesh cylinder; 53, fixed plate; 6, cleaning mechanism; 61, air guide pipe; 62, fixed frame; 63, shunt hole; 64, sleeve; 65, arc-shaped air jet pipe; 66, piston cylinder; 67, piston block; 68, piston rod; 69, annular frame; 610, tension spring; 611, pull rod; 612, annular brush; 613, iron ring; 614, rotating ring; 615, compression spring; 616, link rod; 617, magnet block; 7, high-pressure air bag; 71, electromagnetic valve; 72, high-pressure hose; 8, dust discharge valve; 9, iron sheet bucket; 10, support frame; 11, first conical bucket; 12, second conical bucket. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application.

[0021] Please refer to Figures 1-12The application provides the following implementation: a feed processing workshop cloth bag dust removal device, which comprises a box body 1, the bottom end of the box body 1 is fixedly connected with an air inlet pipe 2, the inner wall of the top of the box body 1 is fixedly connected with a partition plate 3, an air outlet cavity is formed between the upper surface of the partition plate 3 and the inner top wall of the box body 1, the top end of the box body 1 is fixedly connected with an air outlet pipe 4, and the air outlet pipe 4 is connected with the air outlet cavity.

[0022] A plurality of filter bag cylinders 5 are fixedly connected to the middle part of the partition plate 3, the filter bag cylinder 5 is composed of a cloth bag cylinder 51 and a hard mesh cylinder 52 which is fixedly sleeved in the cloth bag cylinder 51, the hard mesh cylinder 52 is a cylindrical shape and provides hard support for the cloth bag cylinder 51, the bottom end of the filter bag cylinder 5 is fixedly connected with a fixed plate 53 (as shown in the figure), and the top end of the filter bag cylinder 5 is connected with the air outlet cavity. Figure 7

[0023] The air to be filtered enters the inside of the box body 1 through the air inlet pipe 2, the dust with large specific gravity in the air settles at the bottom of the box body 1, the fine dust is filtered and intercepted by the plurality of filter bag cylinders 5, so that the air is purified, and the purified air is discharged to the outside of the box body 1 through the air outlet pipe 4.

[0024] Please refer to Figures 5-10 A cleaning mechanism 6 is arranged on each filter bag cylinder 5, the cleaning mechanism 6 comprises a gas guide pipe 61 arranged in the filter bag cylinder 5, the top of the gas guide pipe 61 is fixedly connected with the inner wall of the filter bag cylinder 5 through a fixing frame 62, the bottom end of the gas guide pipe 61 is fixedly connected to the middle part of the fixed plate 53, a plurality of shunt holes 63 are formed in the middle part 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.

[0025] When high-pressure air is introduced into the gas guide pipe 61, the high-pressure air enters the sleeve pipe 64 through the shunt holes 63 and is sprayed out through the plurality of arc-shaped air injection pipes 65, so that the inner wall of the filter bag cylinder 5 is sprayed and blown, which is beneficial to blow away the blocked dust in the gap of the filter bag cylinder 5 and make the dust accumulated on the outer wall of the filter bag cylinder 5 fall off; at the same time, since the arc-shaped air injection pipes 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 injection pipes 65 rotate together, so that the inner wall of the filter bag cylinder 5 can be rotated and sprayed and blown, and the cleaning effect of the filter bag cylinder 5 is ensured.

[0026] ​The cleaning mechanism 6 further comprises a piston cylinder 66 fixed at the bottom of the fixed plate 53 and communicating with the bottom end of the air guide pipe 61, the inside of the piston cylinder 66 slidingly arranged with a piston block 67, the bottom surface of the piston block 67 fixed with a piston rod 68, the bottom end of the piston rod 68 extending below the piston cylinder 66 and fixed with a ring-shaped frame 69, the ring-shaped frame 69 and the top of the piston cylinder 66 fixed with a tension spring 610, the edge of the ring-shaped frame 69 fixed with a group of pull rods 611, a plurality of ring-shaped brushes 612 arranged in an equidistant vertical array fixed between the group of pull rods 611, the ring-shaped brushes 612 slidingly sleeved on the outer surface of the filter bag cylinder 5. Wherein, the upward tension provided by the tension spring 610 for the ring-shaped frame 69, so that the plurality of ring-shaped brushes 612 are in a high position state in the natural state.

[0027] 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 rod 611 and the ring-shaped brush 612 move downward together, that is, the plurality of ring-shaped brushes 612 can clean the outer surface of the filter bag cylinder 5, which can effectively remove the dust accumulated on the outer surface of the filter bag cylinder 5, further improve 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.

[0028] When the ring-shaped brush 612 moves downward to clean the outer surface of the filter bag cylinder 5, the sleeve pipe 64 and the arc-shaped air jet pipe 65 can also move up and down.

[0029] Specifically, the inner wall of the bottom of the sleeve pipe 64 is fixed with an iron ring 613, the iron ring 613 is slidingly sleeved on the outer surface of the air guide pipe 61, the top end and the bottom end of the sleeve pipe 64 are rotatably sleeved with a rotating ring 614, the side surface of the two rotating rings 614 away from each other is fixed with a compression spring 615, 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, 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 air guide pipe 61 and is fixed with a magnet block 617, and 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 material of the magnet block 617 can be selected from neodymium iron boron.

[0030] 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, and further improve 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, the arc-shaped air pipes 65 can rotate and spray the inner wall of the filter bag cylinder 5, and the up-and-down swinging of the arc-shaped air pipes 65 can improve the coverage range of the spraying of the arc-shaped air pipes 65 on the inner wall of the filter bag cylinder 5, so that the arc-shaped air pipes 65 can more comprehensively spray the inner wall of the filter bag cylinder 5, that is, the concentrated airflow at the outlet of the filter bag cylinder 5 can more comprehensively sweep the inner wall of the filter bag cylinder 5, further improving the cleaning effect of the filter bag cylinder 5.

[0031] 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, thereby realizing the above-mentioned cleaning work.

[0032] In addition, it should be noted that in the specific implementation process, 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. In order 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.

[0033] 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.

[0034] Please refer to Figure 2 , Figure 4 , Figure 11 and Figure 12 as further solutions: 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.

[0035] 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 air 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.

[0036] The upper side of the air 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 air 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.

[0037] 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, the scope of the present application being defined by the appended claims rather than the above description, and all changes falling within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. A bag dust removal device for a feed processing workshop, comprising a box body (1), the bottom end of the box body (1) is fixedly connected to an air intake pipe (2), and is characterized in that: A partition (3) is fixed to the inner wall of the top of the box (1), an air outlet pipe (4) is fixedly connected to the top of the box (1), a plurality of filter bag cylinders (5) are fixed to the middle of the partition (3), the filter bag cylinders (5) are composed of a bag cylinder and a hard mesh cylinder fixedly sleeved inside the bag cylinder, and a fixing plate (53) is fixed to the bottom end of the bag cylinder (5); Each filter bag tube (5) is provided with a cleaning mechanism (6), the cleaning mechanism (6) comprising an air guide tube (61) provided inside the filter bag tube (5), the top of the air guide tube (61) being fixed to the inner wall of the filter bag tube (5) via a fixing frame (62), the bottom end of the air guide tube (61) being fixed to the middle of the fixing plate (53), a plurality of diversion holes (63) being provided in the middle of the air guide tube (61), a sleeve (64) being rotatably sleeved on the outer surface of the air guide tube (61), and the sleeve (64) being able to slide up and down on the outer surface of the air guide tube (61), and two rows of arc-shaped air injection pipes (65) being fixedly connected to the outer surface of the sleeve (64); The cleaning mechanism (6) further comprises a piston cylinder (66) fixed to the bottom of the fixed plate (53), and the piston cylinder (66) is connected to the bottom end of the air guide tube (61), a piston block (67) is slidably provided 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 with an annular frame (69), a tension spring (610) is fixed between the annular frame (69) and the top of the piston cylinder (66), a group of pull rods (611) is fixed at the edge of the annular frame (69), a plurality of annular brushes (612) in an equidistant vertical array are fixed between the group of pull rods (611), and 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 cause the sleeve (64) and the arc-shaped air injection pipe (65) to shake up and down.

2. A bag dust removal device for a feed processing workshop according to claim 1, characterized in that: An iron ring (613) is fixed to the inner wall of the bottom of the sleeve (64), 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 both rotatably sleeved with a rotating ring (614), and the two rotating rings (614) are fixed with a compression spring (615) on the side away from each other. The two compression springs (615) are both 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 in sliding contact with the fixing frame (62) and the fixing plate (53) respectively. A connecting rod (616) is fixed to the top surface of the piston block (67), and the top end of the connecting rod (616) extends to the inside of the air guide tube (61) and is fixed with a magnet block (617), and the position of the magnet block (617) corresponds to the position of the iron ring (613).

3. The bag dust removal device for a feed processing workshop according to claim 1, characterized in that: A high-pressure air bag (7) is provided outside the box (1), and the high-pressure air bag (7) is connected to a solenoid valve (71). The output end of the solenoid valve (71) is connected to the top end of the air guide pipe (61) through a high-pressure hose (72).

4. A bag dust removal device for a feed processing workshop according to claim 3, characterized in that: The solenoid valve (71) is electrically connected to an external controller, and the bottom of the box (1) is fixedly connected to a dust exhaust valve (8).

5. The bag dust removal device for a feed processing workshop according to claim 1, characterized in that: An iron bucket (9) is fixed to the inner wall of the lower middle portion of the box body (1), and the air intake pipe (2) extends into the interior of the box body (1), passes through an opening at the bottom of the iron bucket (9), and extends to the top of the iron bucket (9).

6. The bag dust removal device for a feed processing workshop according to claim 5, characterized in that: A support frame (10) is provided above the iron bucket (9), and the top of the air intake pipe (2) is fixed to the inner wall of the box body (1) through the support frame (10). A first cone bucket (11) is provided on the top end of the air intake pipe (2), and an opening is provided at the top end of the first cone bucket (11). A second cone bucket (12) is provided above the first cone bucket (11), and both the first cone bucket (11) and the second cone bucket (12) are fixed to the support frame (10).

7. The bag dust removal device for a feed processing workshop according to claim 1, characterized in that: A cover plate (21) is provided above the air outlet of the air inlet pipe (2), a bracket (22) is fixed to the inner wall of the top end of the air inlet pipe (2), a slide rod (23) is slidably provided in the middle of the bracket (22), a stopper (24) is fixed to the bottom end of the slide rod (23), and the top end of the slide rod (23) is fixed to the bottom surface of the cover plate (21).

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