Dust recovery device for sulfamic acid production

Abstract

The invention discloses a dust recovery device used in sulfamic acid production, and relates to the technical field of sulfamic acid production environmental protection, the dust recovery device comprises a recovery cabin, an axial flow fan is fixedly installed on the inner cavity wall of the recovery cabin, a vibration assembly is arranged on the axial flow fan, and the inner cavity of the recovery cabin is communicated with an air inlet pipe and an air outlet pipe; the vibration assembly in the device adopts a non-contact mode of combining vibration and rotation, so that the filter element moves during dust filtration, and dust is further prevented from being deposited on the filter element on the basis of reducing abrasion to the filter element; the problems that the surface of the filtering element is repeatedly brushed by a brush in a physical contact mode during filtering, the filtering element is abraded or damaged due to long-time brushing, and dust leaks to the external environment are solved, so that the dust filtering efficiency is improved, and air pollution caused by the fact that the dust leaks to the external environment is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of environmental protection in sulfamic acid production, and more specifically, to a dust recovery device used in sulfamic acid production. Background Art

[0002] The dust recovery device used in sulfamic acid production is a device in the advanced environmental protection industry for capturing and recovering dust particles generated during the production process. The main purpose of this device is to prevent dust from being directly discharged into the external air environment, thereby reducing air pollution, protecting the ecological environment, and maximizing the recovery of raw materials, making it more convenient for ecological environment construction.

[0003] Patent No. "CN215692538U" mentions a dust recovery device used in a sulfamic acid production system, including a recovery box. A set of moving wheels is installed at the bottom of the recovery box. The top of the recovery box is connected to a recovery tank. A suction pump is installed inside one side of the recovery tank. One end of the suction pump is connected to a flange connection pipe. A filter cylinder is connected to the inner side of the recovery tank near the lower position through a set of support members. Multiple filter holes are provided on both sides of the filter cylinder. A rotating shaft is disposed through the middle position inside the filter cylinder. The rotating shaft is rotatably connected to the inside of the filter cylinder, and a cleaning brush row is installed on the outer side of the rotating shaft along the circumferential direction at equal intervals inside the filter cylinder.

[0004] For the above-mentioned dust recovery device, a rotating brush is provided between two filter elements. During dust filtration, the brush reciprocally brushes the surface of the filter element to prevent blockage of the filter holes of the filter plate element. This method relies on physical contact. Prolonged brushing of the filter element by the brush will cause wear or damage to the filter element, resulting in unfiltered dust gas being directly discharged into the external environment, causing air pollution.

[0005] And when cleaning the filter element, a method of reciprocally brushing the filter element with a brush and flushing the filter element with water is used. The brush in this method will shed hair during long-term use, thus blocking the pores of the filter element, resulting in a decline in the filtering effect. At the same time, the introduction of water will cause the dust on the filter element to absorb moisture and agglomerate, making it more difficult to clean.

[0006] To solve the above problems, the inventor has proposed a dust recovery device used in sulfamic acid production. Summary of the Invention

[0007] To solve the above technical problems, a dust recovery device used in sulfamic acid production is provided. This technical solution solves the problems raised in the above background art.

[0008] To achieve the above objectives, the present invention can adopt the following technical solutions:

[0009] The present invention provides a dust recovery device for use in the production of sulfamic acid, including a recovery chamber. An axial flow fan is fixedly installed on the inner cavity wall of the recovery chamber, and an air inlet pipe and an air outlet pipe are communicated with the inner cavity of the recovery chamber;

[0010] A vibration assembly is arranged on the axial flow fan. The vibration assembly includes a cavity rod fixedly connected to the fan of the axial flow fan. A first fixed disk is fixedly connected to the cavity rod. A connecting rod is slidably connected in the cavity rod. A spring is sleeved outside the connecting rod. A second fixed disk is fixedly connected to the connecting rod. A rotating cylinder is fixedly connected to the end of the connecting rod away from the axial flow fan. Four ventilation holes are symmetrically formed in the rotating cylinder. Four filter plates are symmetrically installed on the rotating cylinder through bolts. A plurality of pulley seats are fixedly connected to the inner wall of the rotating cylinder at equal intervals in a circular shape. A frame is fixedly connected to the inner cavity wall of the recovery chamber. A fixed ring is fixedly connected to the inner wall of the frame. A plurality of convex blocks are fixedly connected to the fixed ring at equal intervals in a circular shape.

[0011] Preferably, a polytetrafluoroethylene coating is arranged on the inner cavity wall of the recovery chamber. A hatch door is arranged on the recovery chamber. Valves are arranged on both the air inlet pipe and the air outlet pipe.

[0012] Preferably, the connecting rod is composed of a cylinder and rectangular bodies symmetrically arranged on both sides of the cylinder. One end of the spring is fixedly connected to the first fixed disk, and the other end of the spring is fixedly connected to the second fixed disk.

[0013] Preferably, the rotating cylinder is adapted to the frame. The shapes of each ventilation hole and the filter plate are both fan-shaped.

[0014] Preferably, the pulleys on each pulley seat are in rolling fit with the fixed ring. The shape of each convex block is trapezoidal, and the number of convex blocks is equal to the number of pulley seats.

[0015] Preferably, a collection assembly is arranged at the bottom of the recovery chamber. The collection assembly includes a fixed frame fixedly connected to the bottom of the recovery chamber. Four jacks are symmetrically formed in the fixed frame. A recovery box is slidably connected in the fixed frame. Water is contained in the recovery box. Four insertion blocks are symmetrically fixedly connected to the recovery box. A connecting threaded pipe is communicated with the recovery chamber. A solid threaded cylinder is in threaded connection with the connecting threaded pipe. A hollow column is fixedly connected to the upper surface of the solid threaded cylinder. A plurality of exhaust holes are equidistantly formed in a circular shape on the outer surface of the hollow column. A hollow threaded cylinder is fixedly connected to the outer surface of the exhaust hole.

[0016] Preferably, each insertion block is clamped with the adjacent jack. A sealing ring is arranged on one side of the recovery box close to the insertion block. A handle is fixedly installed on the outer wall of the recovery box.

[0017] Preferably, a sealing ring is provided on one side of the solid threaded cylinder close to the top of the connecting threaded pipe, a filter screen is provided on each exhaust hole, and the hollow threaded cylinder is adapted to the connecting threaded pipe.

[0018] As described above, the advantages of the present invention are:

[0019] Compared with the prior art in which a rotating brush reciprocates to brush the surface of the filter element to prevent the filter element from being blocked, the vibration assembly in the present device adopts a non-contact method combining vibration and rotation, so that the filter element moves during dust filtration. On the basis of reducing the wear of the filter element, it further prevents dust from depositing on the filter element, solving the problem that the brush reciprocates to brush the surface of the filter element during filtration by physical contact, and the long-term brushing causes wear or damage to the filter element, resulting in dust leakage to the external environment. In this way, both the dust filtration efficiency is improved, and the dust leakage to the external environment and the resulting air pollution are avoided.

[0020] Compared with the prior art in which a brush reciprocates to brush and water flushes the filter element for cleaning, the vibration assembly in the present device cooperates with the axial flow fan, so that the agglomerated dust on the filter element is sucked and shaken off in the pores of the filter element through continuous vibration. It solves the problem that during the process of cleaning the filter element by water flushing and brush scrubbing, the long-term contact between the brush and the filter element will not only damage the filter element, but also cause the brush to wear and shed hair, resulting in the blockage of the pores of the filter element by the residues of the brush. In this way, both the service life of the filter element is extended, and the possibility of blockage of the pores of the filter element is reduced.

[0021] Compared with the prior art in which a brush reciprocates to brush and water flushes the filter element for cleaning, the vibration assembly in the present device cooperates with the collection assembly. Through the rotation of the filter element, the dust on the filter element is thrown off the filter element, and further the dust on the filter element in the cleaning step can be directly recycled, solving the problem that when the filter element is flushed with water, the dust on the filter element and the dust on the brush absorb moisture and agglomerate, resulting in the adhesion of the dust agglomerates to the filter element, thus requiring additional cleaning treatment. In this way, the dust recovery efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a front three-dimensional schematic view of the overall structure shown in the present invention;

[0023] Figure 2 is a three-dimensional schematic view of the internal section of the recovery cabin shown in the present invention;

[0024] Figure 3 is a three-dimensional schematic view of the related components of the first fixing plate and the connecting rod shown in the present invention;

[0025] Figure 4 Exploded three-dimensional schematic diagram of the rotating cylinder and filter plate shown in the present invention;

[0026] Figure 5 Exploded three-dimensional schematic diagram of the related components of the rotating cylinder and pulley seat shown in the present invention;

[0027] Figure 6 Exploded three-dimensional schematic diagram of the related components of the fixed ring and bump shown in the present invention;

[0028] Figure 7 Planar schematic diagram of the related components of the bump and pulley seat shown in the present invention;

[0029] Figure 8 Exploded three-dimensional schematic diagram of the recovery cabin and fixed frame shown in the present invention;

[0030] Figure 9 Exploded three-dimensional schematic diagram of the fixed frame and recovery frame shown in the present invention;

[0031] Figure 10 Exploded three-dimensional schematic diagram of the related components of the recovery cabin and connecting threaded pipe shown in the present invention;

[0032] Figure 11 Exploded three-dimensional schematic diagram of the solid threaded cylinder and hollow column shown in the present invention.

[0033] Among them, the reference numerals in the present invention are:

[0034] 1. Recovery cabin; 2. Axial flow fan; 3. Intake pipe; 4. Exhaust pipe;

[0035] Vibration assembly: 51. Cavity rod; 52. First fixed disk; 53. Connecting rod; 54. Spring; 55. Second fixed disk; 56. Rotating cylinder; 57. Ventilation hole; 58. Filter plate; 59. Pulley seat; 510. Frame; 511. Fixed ring; 512. Bump;

[0036] Collection assembly: 61. Fixed frame; 62. Jack; 63. Recovery frame; 64. Insert block; 65. Connecting threaded pipe; 66. Solid threaded cylinder; 67. Hollow column; 68. Exhaust hole; 69. Hollow threaded cylinder. Detailed implementation manners

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0038] Embodiments provided by the present invention will be elaborated in detail below:

[0039] A dust recovery device used in the production of sulfamic acid, as Figure 1 and Figure 2 shown, includes a recovery chamber 1. A axial flow fan 2 is fixedly installed on the inner cavity side wall of the recovery chamber 1. The axial flow fan in the axial flow fan 2 can be reversed, and when reversed, the air flow direction is opposite. The inner cavity of the recovery chamber 1 is communicated with an air inlet pipe 3 and an air outlet pipe 4. The air inlet pipe 3 and the air outlet pipe 4 are respectively located on both sides of the axial flow fan 2. The air inlet pipe 3, the axial flow fan in the axial flow fan 2, and the air outlet pipe 4 are located on the same axis, so as to ensure the efficiency of the axial flow fan 2 sucking gas and discharging filtered gas;

[0040] As Figures 2 to 7 shown, a vibration assembly is arranged on the axial flow fan 2. The vibration assembly includes a cavity rod 51 fixedly connected to the fan of the axial flow fan 2. The cavity rod 51 is located at the axial center position of the fan. A fixed disk one 52 is fixedly connected to the outer surface of the cavity rod 51. A connecting rod 53 is horizontally slidably connected in the cavity rod 51. A spring 54 is sleeved outside the connecting rod 53. The part of the cavity rod 51 away from the axial flow fan 2 is located inside the spring 54. A fixed disk two 55 is fixedly connected to the outer surface of the connecting rod 53. One end of the connecting rod 53 away from the axial flow fan 2 is fixedly connected to a rotating cylinder 56. Four ventilation holes 57 are symmetrically arranged on the rotating cylinder 56. Four filter plates 58 are symmetrically installed on the rotating cylinder 56 through bolts. The four filter plates 58 are all located on the side close to the axial flow fan 2. Each filter plate 58 corresponds to each ventilation hole 57. A plurality of pulley seats 59 are fixedly connected to the inner wall of the rotating cylinder 56 at equal intervals in the circumferential direction. The plurality of pulley seats 59 are located on the side away from the connecting rod 53. A frame 510 is fixedly connected to the inner cavity wall of the recovery chamber 1. A fixed ring 511 is fixedly connected to the inner wall of the frame 510. A plurality of convex blocks 512 are fixedly connected to the side of the fixed ring 511 close to the rotating cylinder 56 at equal intervals in the circumferential direction. Each pulley seat 59 is in contact with the fixed ring 511.

[0041] Further, as Figure 1 shown, a polytetrafluoroethylene coating is provided on the inner cavity wall of the recovery chamber 1. Since the polytetrafluoroethylene coating has good anti-adhesion and stability, gas dust in the production of amino acid yellow is not easily attached to the inner cavity wall of the recovery chamber 1. A hatch is provided on the upper surface of the recovery chamber 1. Workers can install the filter plate 58 by opening the hatch. Valves are provided on both the air inlet pipe 3 and the air outlet pipe 4. Workers can filter dust by opening and closing the valves on the air inlet pipe 3 and the air outlet pipe 4.

[0042] Further, as Figure 3As shown, the connecting rod 53 is composed of a cylinder and rectangular parallelepipeds symmetrically arranged on both sides of the cylinder. The cylinder and the rectangular parallelepipeds of the connecting rod 53 can be adapted to the cavity rod 51, so that the connecting rod 53 can rotate together with the cavity rod 51. One end of the spring 54 far from the rotating cylinder 56 is fixedly connected to the first fixed disk 52, and the other end of the spring 54 is fixedly connected to the second fixed disk 55.

[0043] Furthermore, as Figure 2 and Figure 4 shown, the rotating cylinder 56 is adapted to the frame 510. The shape of each ventilation hole 57 and the filter plate 58 is fan-shaped. Each filter plate 58 can cover the adjacent ventilation holes 57, so as to ensure that the gas containing dust passes through the filter plate 58 completely and then passes out through the ventilation holes 57.

[0044] Furthermore, as Figures 5 to 7 shown, the pulleys on each pulley seat 59 are in rolling fit with the fixed ring 511, and the pulley seat 59 moves annularly along the end face of the fixed ring 511. The shape of each convex block 512 is trapezoidal. The number of convex blocks 512 is equal to the number of pulley seats 59, and the convex blocks 512 and the pulley seats 59 are alternately distributed.

[0045] Furthermore, as Figures 8 to 11 shown, a collection assembly is provided at the bottom of the recovery cabin 1. The collection assembly includes a fixed frame 61 fixedly connected to the bottom surface of the recovery cabin 1. Four jacks 62 are symmetrically opened on the outer wall of the fixed frame 61. A recovery frame 63 is horizontally slidably connected in the fixed frame 61. Water is contained in the recovery frame 63, and the dust is recovered by using the adsorbability of water to dust. Four insertion blocks 64 are symmetrically and fixedly connected to one side of the recovery frame 63 close to the jacks 62. A connecting threaded pipe 65 is communicated with the upper surface of the recovery cabin 1. A solid threaded cylinder 66 is threadedly connected in the connecting threaded pipe 65. A hollow column 67 is fixedly communicated with one side of the solid threaded cylinder 66 far from the recovery cabin 1. A plurality of exhaust holes 68 are equidistantly and annularly opened on the outer surface of the hollow column 67. A hollow threaded cylinder 69 is fixedly connected to the outer surface of the exhaust holes 68. The solid threaded cylinder 66, the hollow column 67 and the hollow threaded cylinder 69 are located on the same axis.

[0046] Furthermore, as Figure 8 and Figure 9 shown, the insertion blocks 64 and the jacks 62 are in interference fit. Each insertion block 64 is clamped with the adjacent jack 62. Thus, after the insertion blocks 64 are inserted into the adjacent jacks 62, the insertion blocks 64 remain stationary. A sealing ring is provided on one side of the recovery frame 63 close to the insertion blocks 64. The sealing ring is used to ensure that the dust in the gas does not leak from the recovery frame 63 to the external environment. A handle is fixedly installed on the outer wall of the recovery frame 63. The staff can pull out the recovery frame 63 by pulling the handle to collect the dust.

[0047] Furthermore, as Figure 10and Figure 11 As shown in Figure 11 , a sealing ring is provided on one side of the solid threaded cylinder 66 close to the top of the connecting threaded pipe 65. The sealing ring is used to ensure that the dust in the gas does not leak from the connecting threaded pipe 65 to the external environment. A filter screen is provided on each exhaust hole 68. When the four filter plates 58 are self-cleaned, the filter screen on the exhaust hole 68 can prevent the dust from spreading to the external environment. The hollow threaded cylinder 69 is adapted to the connecting threaded pipe 65, and the staff can screw the hollow threaded cylinder 69 into the inside of the connecting threaded pipe 65 through the thread.

[0048] During operation:

[0049] The device can improve the efficiency of dust filtration. The following are the detailed steps:

[0050] The staff opens the valves on the air inlet pipe 3 and the air outlet pipe 4, connects the air inlet pipe 3 to the sulfamic acid production equipment, and then starts the axial flow fan 2 through the controller, so that the axial flow fan in the axial flow fan 2 rotates forward, thereby sucking the dust gas generated in the sulfamic acid production;

[0051] During the forward rotation of the axial flow fan in the axial flow fan 2, the cavity rod 51 rotates forward together with the axial flow fan, so that the connecting rod 53 and the rotating cylinder 56 rotate forward together, and further the four filter plates 58 on the rotating cylinder 56 rotate forward;

[0052] During the forward rotation of the rotating cylinder 56, the pulleys on the multiple pulley seats 59 on the rotating cylinder 56 move in a circular motion along the annular plane of the fixed ring 511. The following describes the pulley on the pulley seat 59 passing through a fixed ring 511:

[0053] During the circular motion of the pulley on the pulley seat 59 along the annular plane of the fixed ring 511, when the pulley seat 59 moves from the plane of the fixed ring 511 to the inclined surface of the convex block 512, the inclined surface of the convex block 512 presses the pulley seat 59, so that the rotating cylinder 56, the second fixed disk 55 and the connecting rod 53 rotate forward and move horizontally along the inner wall of the cavity rod 51 towards the side close to the axial flow fan 2. At this time, the second fixed disk 55 presses the spring 54, so that the spring 54 is in a compressed state. When the pulley on the pulley seat 59 moves to the plane of the convex block 512, the rotating cylinder 56, the second fixed disk 55 and the connecting rod 53 do not move horizontally and only rotate forward. When the pulley on the pulley seat 59 moves from the plane of the convex block 512 to the plane of the fixed ring 511, the spring 54 rebounds and resets, so that the rotating cylinder 56, the second fixed disk 55 and the connecting rod 53 rotate forward and move horizontally along the inner wall of the cavity rod 51 towards the side away from the axial flow fan 2 and return to the initial position;

[0054] During the forward rotation of the rotary cylinder 56, the pulleys on the pulley seat 59 will pass through multiple fixed rings 511. Therefore, the rotary cylinder 56 will perform small-amplitude reciprocating lateral movement, further causing the rotary cylinder 56 and the filter plate 58 to vibrate. In this way, when the axial flow fan sucks the dust gas in the sulfamic acid production equipment into the recovery chamber 1 and the dust gas is filtered through the filter plate 58, the filter plate 58 vibrates while rotating forward. Through the non-contact method combining rotation and vibration, it is possible to prevent dust from clogging in the filter holes of the filter plate 58 and make the filtered gas pass through the filter plate 58 more smoothly and be discharged to the external environment through the air outlet pipe 4. At the same time, the rotating filter plate 58 will cause the dust on the filter plate 58 to be thrown off to the side wall of the recovery chamber 1 and fall into the recovery frame 63. The water in the recovery frame 63 adsorbs the thrown-off dust, thereby maintaining the cleanliness of the filter plate 58 during filtration.

[0055] In the above process, compared with the prior art method of using a rotating brush to reciprocally brush the surface of the filter element to prevent the filter element from being clogged, the vibration assembly in this device uses a non-contact method combining vibration and rotation to make the filter element move during dust filtration. On the basis of reducing the wear of the filter element, it further prevents dust from depositing on the filter element, solving the problem that the brush reciprocally brushes the surface of the filter element during filtration by physical contact, and the long-term brushing causes wear or damage to the filter element, resulting in dust leakage to the external environment. In this way, both the dust filtration efficiency is improved and the dust leakage to the external environment and the resulting air pollution are avoided.

[0056] After the device cleans the filter element, the dust on the filter element can be recovered. The following are the detailed steps:

[0057] When it is necessary to clean the filter plate 58, the staff rotates the hollow column 67 counterclockwise, so that the hollow column 67 drives the solid threaded cylinder 66 to disengage from the connecting threaded pipe 65. Then, the hollow threaded cylinder 69 is aligned with the connecting threaded pipe 65, and the hollow column 67 is rotated clockwise, so that the hollow column 67 drives the hollow threaded cylinder 69 to insert into the connecting threaded pipe 65. At this time, the space below the connecting threaded pipe 65 is connected to the external environment. Then, the staff closes the valve on the air inlet pipe 3;

[0058] Then, the staff makes the axial flow fan in the axial flow fan 2 reverse through the controller to change the air flow direction and suck the dust on the filter plate 58. At this time, the external air enters the interior of the recovery chamber 1 from the air outlet pipe 4 and is discharged outward through the exhaust holes 68 on the hollow column 67;

[0059] During the reverse rotation of the axial flow fan, the rotating cylinder 56 is driven to reverse together, causing the pulleys on the multiple pulley seats 59 of the rotating cylinder 56 to perform circular motion along the annular plane of the fixed ring 511. When the pulley on the pulley seat 59 moves from the plane of the fixed ring 511 to the inclined plane of the bump 512, the inclined plane of the bump 512 presses the pulley on the pulley seat 59, causing the rotating cylinder 56, the second fixed disk 55, and the connecting rod 53 to move horizontally along the inner wall of the cavity rod 51 towards the side close to the axial flow fan 2 while reversing. At this time, the second fixed disk 55 presses the spring 54, causing the spring 54 to be in a compressed state. When the pulley on the pulley seat 59 moves to the plane of the bump 512, the rotating cylinder 56, the second fixed disk 55, and the connecting rod 53 do not move horizontally and only reverse. When the pulley on the pulley seat 59 moves from the plane of the bump 512 to the plane of the fixed ring 511, the spring 54 rebounds and resets, causing the rotating cylinder 56, the second fixed disk 55, and the connecting rod 53 to move horizontally along the inner wall of the cavity rod 51 towards the side away from the axial flow fan 2 while reversing and return to the initial position;

[0060] In this way, when the axial flow fan sucks the dust on the filter plate 58, the filter plate 58 will reverse and vibrate. The vibration causes the dust in the filter holes of the filter plate 58 to be shaken loose, and along with the reverse rotation of the filter plate 58, the dust is thrown off the filter plate 58 and falls into the recovery box 63. The water in the recovery box 63 adsorbs the thrown-off dust, and part of the dust flows towards the hollow column 67 with the gas and is intercepted by the filter screen in the hollow column 67, thus realizing the recovery of dust during the cleaning process;

[0061] After the cleaning is completed, the staff pulls out the recovery box 63 through the handle on the recovery box 63 to recover the dust collected in the recovery box 63. Subsequently, the hollow column 67 is rotated counterclockwise, causing the hollow column 67 to drive the hollow threaded cylinder 69 to disengage from the connecting threaded pipe 65 to recover the dust collected in the hollow column 67;

[0062] After the dust recovery process is completed, the solid threaded cylinder 66 is aligned with the connecting threaded pipe 65, and the hollow column 67 is rotated clockwise, causing the hollow column 67 to drive the solid threaded cylinder 66 to screw into the inside of the connecting threaded pipe 65. Subsequently, the valve on the air inlet pipe 3 is closed, and it is ensured that the valves on the air inlet pipe 3 and the air outlet pipe 4 are both in the closed state for the next recovery of dust in the production of sulfamic acid.

[0063] In the above process, compared with the prior art method of cleaning the filter element by reciprocatingly scrubbing with a brush and flushing with water flow, the vibration assembly and the axial flow fan in this device cooperate with each other, so that the agglomerated dust on the filter element is shaken off in the pores of the filter element through continuous vibration while being suctioned. This solves the problem that during the process of cleaning the filter element by water flow flushing and brush scrubbing, the long-term contact between the brush and the filter element will not only damage the filter element, but also cause the brush to wear and shed hair, resulting in the blockage of the pores of the filter element by the brush residues. In this way, the service life of the filter element is extended, and the possibility of blockage of the pores of the filter element is reduced.

[0064] In the above process, compared with the prior art method of cleaning the filter element by reciprocatingly scrubbing with a brush and flushing with water flow, the vibration assembly and the collection assembly in this device cooperate with each other. Through the rotation of the filter element, the dust on the filter element is thrown off the filter element, and further enables the dust on the filter element in the cleaning step to be directly recovered, solving the problem that when flushing the filter element with water flow, the dust on the filter element and the dust on the brush absorb moisture and agglomerate, resulting in the adhesion of the dust agglomerates to the filter element, thus requiring additional cleaning treatment. In this way, the recovery efficiency of the dust is improved.

[0065] The above are only the embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, 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 dust recovery device for use in the production of aminosulfonic acid, comprising a recovery chamber (1), characterized in that: An axial flow fan (2) is fixedly mounted on the inner cavity wall of the recovery cabin (1), and the inner cavity of the recovery cabin (1) is connected to an air inlet pipe (3) and an air outlet pipe (4); The axial flow fan (2) is provided with a vibration assembly, the vibration assembly comprising a cavity rod (51) fixedly connected to the fan of the axial flow fan (2), the cavity rod (51) being fixedly connected to a first fixing plate (52), a connecting rod (53) being slidably connected inside the cavity rod (51), a spring (54) being sleeved on the outer side of the connecting rod (53), a second fixing plate (55) being fixedly connected to the connecting rod (53), and an end of the connecting rod (53) away from the axial flow fan (2) being fixedly connected to a rotating shaft. A rotating drum (56), wherein four ventilation holes (57) are symmetrically provided on the rotating drum (56), four filter plates (58) are symmetrically mounted on the rotating drum (56) by means of bolts, a plurality of pulley seats (59) are fixedly connected in an annular manner at equal intervals to the inner wall of the rotating drum (56), a frame (510) is fixedly connected to the inner wall of the recovery chamber (1), a fixing ring (511) is fixedly connected to the inner wall of the frame (510), and a plurality of protrusions (512) are fixedly connected in an annular manner at equal intervals to the fixing ring (511).

2. The dust recovery device for use in the production of aminosulfonic acid according to claim 1, characterized in that: The inner wall of the recovery cabin (1) is provided with a polytetrafluoroethylene coating, the recovery cabin (1) is provided with a cabin door, and the air inlet pipe (3) and the air outlet pipe (4) are both provided with valves.

3. The dust recovery device for use in the production of aminosulfonic acid according to claim 1, characterized in that: The connecting rod (53) is composed of a cylinder and rectangular parallelepipeds symmetrically arranged on both sides of the cylinder. One end of the spring (54) is fixedly connected to the first fixing plate (52), and the other end of the spring (54) is fixedly connected to the second fixing plate (55).

4. The dust recovery device for use in the production of aminosulfonic acid according to claim 1, characterized in that: The rotating cylinder (56) is adapted to the frame (510), and each of the ventilation holes (57) and the filter plate (58) is in the shape of a sector.

5. The dust recovery device for use in the production of aminosulfonic acid according to claim 1, characterized in that: The pulley on each pulley seat (59) is in rolling cooperation with the fixing ring (511), the shape of each protrusion (512) is trapezoidal, and the number of the protrusions (512) is equal to the number of the pulley seats (59).

6. The dust recovery device for use in the production of aminosulfonic acid according to claim 1, characterized in that: A collecting assembly is provided at the bottom of the recovery cabin (1), the collecting assembly comprising a fixing frame (61) fixedly connected to the bottom of the recovery cabin (1), the fixing frame (61) being symmetrically provided with four plug holes (62), a recovery frame (63) being slidably connected inside the fixing frame (61), the recovery frame (63) being filled with water, four plug blocks (64) being symmetrically fixedly connected to the recovery frame (63), a connecting threaded pipe (65) being connected to the recovery cabin (1), a solid threaded cylinder (66) being internally threadedly connected to the connecting threaded pipe (65), a hollow column (67) being fixedly connected to the upper surface of the solid threaded cylinder (66), a plurality of exhaust holes (68) being equidistantly provided in an annular shape on the outer surface of the hollow column (67), and a hollow threaded cylinder (69) being fixedly connected to the outer surface of the exhaust hole (68).

7. The dust recovery device for use in the production of aminosulfonic acid according to claim 6, characterized in that: Each of the plug blocks (64) is snap-fitted to a neighboring plug hole (62); a sealing ring is provided on one side of the recovery frame (63) close to the plug block (64); and a handle is fixedly mounted on the outer wall of the recovery frame (63).

8. The dust recovery device for use in the production of aminosulfonic acid according to claim 6, characterized in that: A sealing ring is provided on one side of the solid threaded barrel (66) close to the top of the connecting threaded tube (65), a filter screen is provided on each of the exhaust holes (68), and the hollow threaded barrel (69) is adapted to fit the connecting threaded tube (65).

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