Industrial waste gas purification device

Abstract

The invention relates to the field of waste gas treatment, in particular to an industrial waste gas purification device which comprises a spraying box, a partition plate, a filter screen, a sprayer and an air pump, the partition plate, the filter screen, the sprayer and the air pump are fixedly connected into the spraying box, the partition plate and the filter screen are horizontally arranged, the partition plate is located below the filter screen, silk threads of the filter screen are made of elastic materials, and the sprayer is located above the filter screen; the rolling ball, the rotating shaft, the push rod and the rotating motor are located in the spraying box, the rotating motor is fixedly connected with the spraying box, the rotating motor and the rolling ball are located below the sprayer and above the filter screen, the lower surface of the rolling ball is in pressing contact fit with the upper surface of the filter screen, one end of the push rod is connected with the rolling ball, and the other end of the push rod is connected with the rotating shaft. The other end of the push rod is fixedly connected with the rotating shaft; the rolling ball rolls the upper surface of the filter screen to form a lower pit; the input end of the air pump is connected with the top of the space below the partition plate, and the output port of the air pump communicates with the bottom of the space above the partition plate. The contact efficiency of waste gas and water mist can be improved, waste of water resources is reduced, and the purification cost is reduced.

Description

Technical Field

[0001] The present application relates to the field of waste gas treatment, and in particular to an industrial waste gas purification device. Background Art

[0002] In the process of industrial production, a large amount of waste gas is inevitably generated. These waste gases not only pollute the air environment inside the factory, affecting the health of workers and production safety, but also seriously threaten the air quality and aggravate the problem of environmental pollution if they are directly discharged into the external environment without effective purification. Therefore, the timely discharge and efficient purification of industrial waste gas have become an indispensable and important part of the industrial production process.

[0003] For the purification of industrial waste gas, existing technologies have developed a variety of methods, including but not limited to water purification, spray purification, electrostatic adsorption purification, etc. Among them, spray purification technology is widely used in various industrial production scenarios because of its relatively low cost and significant purification effect. The core of spray purification technology is to introduce waste gas into a spray device (such as a spray tank, spray box or spray tower), spray fine water mist into the device, and use the physical effect of water mist and particulate matter in the waste gas to achieve the capture of particulate matter and partial dissolution and purification of gas.

[0004] Although spray purification technology has many advantages, it still faces many challenges in its actual application. First, the rising movement state of exhaust gas in the spray device has significant uncertainty and is easily affected by factors such as ambient temperature differences, spray intensity and uneven distribution, resulting in reduced contact efficiency between exhaust gas and water mist. Secondly, the density of water mist and exhaust gas in different areas changes dynamically during the spraying process. When the water mist density in the local area is insufficient and the exhaust gas density is high, it is easy for the exhaust gas to be discharged without fully contacting the water mist. This not only reduces the purification efficiency, but also causes a waste of water resources. In addition, the water mist that does not effectively participate in the spraying process and directly falls cannot be fully utilized, further increasing the purification cost and reducing the overall purification effect. Summary of the invention

[0005] In view of this, an industrial waste gas purification device is proposed to improve the contact efficiency between waste gas and water mist, while reducing water resource waste and lowering purification costs.

[0006] The present application provides an industrial waste gas purification device, comprising a spray box and a partition, a filter, a sprayer, and an air pump fixedly connected to the inside of the spray box, the partition and the filter are arranged horizontally, the partition is located below the filter, the wire of the filter is made of elastic material, and the sprayer is located above the filter; it also includes a rolling ball, a rotating shaft, a push rod, and a rotating motor located inside the spray box, the rotating motor is fixedly connected to the spray box, the rotating motor and the rolling ball are located below the sprayer and above the filter, the lower surface of the rolling ball is pressed and contacted with the upper surface of the filter, one end of the push rod is connected to the rolling ball, and the other end of the push rod is fixedly connected to the rotating shaft, the rotating shaft passes through the center of the filter, the outer side surface of the rotating shaft is provided with a limiting groove, the center position of the filter is inserted into the limiting groove, and the rolling ball rolls on the upper surface of the filter to form a lower pit; the input end of the air pump is connected to the top of the space below the partition, and the output port of the air pump is connected to the bottom of the space above the partition.

[0007] In some embodiments of the above-mentioned industrial waste gas purification device, the end of the push rod close to the rolling ball is fixedly connected to a U-shaped retaining frame with an opening facing downward, the upper and middle part of the rolling ball is located inside the retaining frame, and the inner side of the lower end of the retaining frame is fixedly connected to a fixed shaft, and the fixed shaft passes through the center of the rolling ball along the radial direction of the rotating shaft and is rotatably connected to the rolling ball.

[0008] In some embodiments of the above industrial waste gas purification device, the rolling ball is configured as a hollow structure, and the rolling ball is made of an elastic material.

[0009] In some embodiments of the above-mentioned industrial waste gas purification device, a plurality of support frames are fixedly connected inside the rolling ball, each of the support frames is located on a plane passing through the central axis of the rolling ball, and each of the support frames is distributed in a circular array around the central axis of the rolling ball.

[0010] In some embodiments of the above-mentioned industrial waste gas purification device, a steel ball is arranged inside the rolling ball, the inner side surface of the support frame is arranged parallel to the inner wall of the rolling ball, and the maximum distance of the inner side surface of the support frame in the vertical direction is greater than the diameter of the steel ball.

[0011] In some embodiments of the above industrial waste gas purification device, a layer of densely arranged bristles is fixedly connected to the outer side of the rolling ball, and the bristles are arranged along the radial direction of the rolling ball.

[0012] In some embodiments of the above-mentioned industrial waste gas purification device, the industrial waste gas purification device also includes a first upper bracket, a first lower bracket, and a second bracket arranged in sequence from bottom to top and fixedly connected to the inside of the spray box, the rotating motor is fixedly connected to the center of the first upper bracket, the upper end of the rotating shaft is rotatably connected to the center of the upper bracket, the lower end of the rotating shaft is rotatably connected to the center of the first lower bracket, the filter, the rolling ball, and the push rod are located between the first upper bracket and the first lower bracket; the sprayer is fixedly connected to the center position of the second bracket.

[0013] In some embodiments of the above-mentioned industrial waste gas purification device, the rolling ball and the push rod are arranged in pairs and are symmetrically arranged on both sides of the rotating shaft with a point on the rotating shaft as the center symmetry point, one of the rolling balls is located under the filter and is pressed tightly with the lower surface of the filter and rolls the lower surface of the filter to form an upper pit, and the upper edge of the lower pit and the lower edge of the upper pit are circular in shape and the diameter is equal to the radius of the filter.

[0014] In some embodiments of the above-mentioned industrial waste gas purification device, the first upper bracket, the first lower bracket, the rotating motor, the rotating shaft, the push rod, the rolling ball, and the filter constitute a filter assembly, and there are multiple filter assemblies, each of which is arranged in a vertical direction, and the rotating shafts in adjacent filter assemblies rotate in opposite directions.

[0015] In some embodiments of the above-mentioned industrial waste gas purification device, the sprayer and the second bracket constitute a spray assembly, there are multiple spray assemblies, each of the spray assemblies is located between two adjacent filter assemblies, and the sprayer has two groups of nozzles and is respectively arranged upward and downward.

[0016] Beneficial effects of the present invention: During the spraying process, the air pump blows the exhaust gas below the partition to the space above the partition. The separation of the filter can prevent the airflow from concentrating in one direction and moving upward, which is conducive to maintaining the stability of the downward movement state of the spray at various locations, maintaining the uniformity of the distribution of spray and exhaust gas at various locations, and facilitating the landing of particles in the exhaust gas captured by water droplets. After the spray falls on the filter, it wets the filter. When some particles in the exhaust gas pass through the mesh of the wet filter, they can be adsorbed and captured by the water on the surface of the filter. Under the tension and siphon effect of the water, the water will wet various positions of the filter. Therefore, even if the local spray density above the filter is uneven, the degree of wetting of the filter at various locations can be consistent, which can make up for the defect of reduced local spray density. It does not completely rely on adsorption and capture during the spray falling process, but also relies on the continuous adsorption and capture of the filter. When there is no spray locally, the filter at the corresponding position can still be in a wet state, and the spray volume and spray density can be appropriately reduced. The falling water mist is collected above the partition to form a pool. The waste gas output from the outlet of the air pump enters the pool and rises in the form of bubbles. In this process, it contacts the water in the pool, and part of the waste gas is adsorbed. The spray volume and spray density can be further appropriately reduced. Therefore, the contact efficiency between the waste gas and the water mist can be improved, while reducing the waste of water resources and the purification cost.

[0017] The rolling ball moves in a circle around the axis of rotation, and the rolling filter forms a lower pit on the filter with a continuously switched position. In the lower pit, the farther away from the plane where the filter is not rolled, the greater the degree of stretching of the filter mesh and the larger the mesh size. On the one hand, it can facilitate the passage of exhaust gas, and on the other hand, it can realize the self-cleaning of the filter. On the other hand, it can push the exhaust gas below the filter to generate momentum in the circumferential direction, so that the exhaust gas spirals up, increasing the probability of the exhaust gas colliding with the wire of the filter mesh during the process of passing through the mesh of the filter, that is, improving the adsorption and capture efficiency of the exhaust gas. On the other hand, it can provide excess water on the filter to gather and drip into the lower pit to avoid the mesh of the filter being blocked by water. During the process of resetting and leveling the pit, the water on the surface of the filter and the particles in the exhaust gas can more easily fall off the filter under the action of inertia. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the present application and, together with the description, serve to explain the principles of the present application.

[0019] Figure 1 It is a schematic diagram of the structure of the industrial waste gas purification device in the embodiment of the present application; Figure 2 It is a schematic diagram of the structure of the filter screen in the embodiment of the present application; Figure 3 yes Figure 2 Top view of the middle filter; Figure 4 yes Figure 2Side view of the middle filter; Figure 5 is a schematic diagram of the structure of a rolling ball in an embodiment of the present application; Figure 6 Rolling ball edge Figure 5 Sectional view along line AA; Figure 7 This is a schematic diagram of the structure of an industrial waste gas purification device in one embodiment of the present application; Figure 8 It is a structural schematic diagram of an industrial waste gas purification device in another embodiment of the present application.

[0020] Description of reference numerals: 100, spray box; 102, partition; 104, filter; 106, sprayer; 108, air pump; 110, rolling ball; 112, rotating shaft; 114, push rod; 116, rotating motor; 118, limit groove; 120, lower pit; 122, retaining frame; 124, fixed shaft; 126, support frame; 128, steel ball; 130, bristles; 132, first upper bracket; 134, first lower bracket; 136, second bracket; 138, upper pit; 140, nozzle; 142, pool. DETAILED DESCRIPTION

[0021] Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same figure numbers in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings need not be drawn to scale unless otherwise specified. The special word "exemplary" here means "used as an example, embodiment or illustrative". Any embodiment described here as "exemplary" is not necessarily interpreted as being superior to or better than other embodiments. In addition, in order to better illustrate the present application, those skilled in the art should understand that numerous specific details are given in each embodiment below. Without certain specific details, the present application can also be implemented. In some embodiments, methods, means and elements well known to those skilled in the art are not described in detail to highlight the subject matter of the present application.

[0022] Combination Figures 1 to 4As shown, the embodiment of the present application provides an industrial waste gas purification device, including a spray box 100 and a partition 102, a filter 104, a sprayer 106, and an air pump 108 fixedly connected to the inside of the spray box 100, the partition 102 and the filter 104 are arranged horizontally, the partition 102 is located below the filter 104, the wire of the filter 104 is made of elastic material, and the sprayer 106 is located above the filter 104; it also includes a rolling ball 110, a rotating shaft 112, a push rod 114, and a rotating motor 116 located inside the spray box 100, the rotating motor 116 is fixedly connected to the spray box 100, and the rotating motor 116 and the rolling ball 110 are located at the spray The lower surface of the rolling ball 110 is pressed and contacted with the upper surface of the filter 104, one end of the push rod 114 is connected to the rolling ball 110, and the other end of the push rod 114 is fixedly connected to the rotating shaft 112, the rotating shaft 112 passes through the center of the filter 104, and the outer side surface of the rotating shaft 112 is provided with a limiting groove 118, the center position of the filter 104 is inserted into the limiting groove 118, and the rolling ball 110 rolls on the upper surface of the filter 104 to form a lower pit 120; the input end of the air pump 108 is connected to the top of the space below the partition 102, and the output port of the air pump 108 is connected to the bottom of the space above the partition 102. The bottom of the spray box 100 is connected to an air inlet pipe, and the bottom of the space above the partition 102 is connected to a water outlet pipe. The air inlet pipe is connected to the exhaust gas source (such as an exhaust pipe), and the water outlet pipe leads to the wastewater collection area or is connected to the sprayer 106 after passing through the water pump for radial circulation. Preferably, the output port of the air pump 108 is aligned with the movement path of the rolling ball 110 in the vertical direction.

[0023] During the spraying process, the air pump 108 blows the exhaust gas below the partition 102 to the space above the partition 102. The separation of the filter 104 can prevent the airflow from concentrating in one direction and moving upward, which is beneficial to maintaining the stability of the downward movement state of the spray at various locations, maintaining the uniformity of the distribution of the spray and exhaust gas at various locations, and facilitating the landing of particles in the exhaust gas captured by the water mist droplets. After the spray falls on the filter 104, the filter 104 is wetted. When some particles in the exhaust gas pass through the mesh of the wet filter 104, they can be adsorbed and captured by the water on the surface of the filter 104. Under the tension and siphon effect of the water, the water will wet various positions of the filter 104. Therefore, even if the local spray density above the filter 104 is uneven, the wetting degree of the filter 104 can be consistent, which can make up for the defect of reduced local spray density. It does not completely rely on the adsorption and capture during the spray falling process, but also relies on the continuous adsorption and capture of the filter 104. When there is no spray locally, the filter 104 at the corresponding position can still be in a wet state, and the spray amount and spray density can be appropriately reduced. The falling water mist is collected above the partition 102 to form a pool 142. The exhaust gas output from the output port of the air pump 108 enters the pool 142 and rises in the form of bubbles. In this process, it contacts the water in the pool 142, and some exhaust gas is adsorbed, and the spray amount and spray density can be further appropriately reduced. Therefore, the contact efficiency between exhaust gas and water mist can be improved, while reducing water resource waste and lowering purification costs.

[0024] The rolling ball 110 performs circular motion around the rotating shaft 112, and at the same time, the rolling filter 104 forms a lower pit 120 on the filter 104, which continuously switches positions. In the lower pit 120, the farther away from the plane where the filter 104 is not rolled, the greater the degree of stretching of the mesh of the filter 104 and the larger the mesh size. On the one hand, it is convenient for the exhaust gas to pass through, and on the other hand, it can realize the self-cleaning of the filter 104. On the other hand, it can promote the exhaust gas below the filter 104 to generate momentum in the circumferential direction, so that the exhaust gas spirals up, and increase the probability of the exhaust gas colliding with the wire of the filter 104 during the process of passing through the mesh of the filter 104, that is, the adsorption and capture efficiency of the exhaust gas is improved. On the other hand, it can provide excess water on the filter 104 to gather and drip into the lower pit 120 to prevent the mesh of the filter 104 from being blocked by water. During the process of resetting and leveling the pit, the water on the surface of the filter 104 and the particles in the exhaust gas can more easily fall off the filter 104 under the action of inertia.

[0025] Combination Figure 5 and Figure 6As shown, in some exemplary implementations of the present embodiment, one end of the push rod 114 close to the rolling ball 110 is fixedly connected to a U-shaped retaining frame 122 with an opening facing downward, the middle and upper part of the rolling ball 110 is located inside the retaining frame 122, and the inner side of the lower end of the retaining frame 122 is fixedly connected to a fixed shaft 124, which passes through the center of the rolling ball 110 along the radial direction of the rotating shaft 112 and is rotatably connected to the rolling ball 110.

[0026] The central axis of rotation of the rolling ball 110 is arranged along the radial direction of the rotating shaft 112, so as to facilitate the rolling of the rolling ball 110 on the filter screen 104, reduce the relative sliding degree between the rolling ball 110 and the filter screen 104, and prevent the filter screen 104 from being worn or scratched.

[0027] In some exemplary implementations of this embodiment, the rolling ball 110 is configured as a hollow structure, and the rolling ball 110 is made of an elastic material.

[0028] The rolling ball 110 is filled with gas at a certain pressure. When the rolling ball 110 rolls on the filter 104, the rolling ball 110 is deformed to a certain extent, which helps the rolling ball 110 to climb upward along the inner wall of the lower pit 120 (in fact, the rolling ball 110 does not move upward. This description takes the filter 104 as a reference object, and the rolling ball 110 moves relative to the filter 104).

[0029] In some exemplary implementations of this embodiment, a plurality of support frames 126 are fixedly connected inside the rolling ball 110 , each support frame 126 is located on a plane passing through the central axis of the rolling ball 110 , and each support frame 126 is distributed in a circular array around the central axis of the rolling ball 110 .

[0030] The support frame 126 can support the inner wall of the rolling ball 110 to prevent the rolling ball 110 from deforming along the axial direction of its own rotation center.

[0031] In some exemplary implementations of this embodiment, a steel ball 128 is provided inside the rolling ball 110, the inner side surface of the support frame 126 is arranged parallel to the inner wall of the rolling ball 110, and the maximum distance of the inner side surface of the support frame 126 in the vertical direction is greater than the diameter of the steel ball 128.

[0032] When the rolling ball 110 rolls on the filter 104, the steel ball 128 moves relatively around the central axis of the rolling ball 110, and intermittently collides with the support frame 126 (the width of the support frame 126 along the radial direction of the rolling ball 110 is smaller than the radius of the steel ball 128), causing the rolling ball 110 to vibrate. The rolling ball 110 transmits the vibration to the filter 104, causing the filter 104 to vibrate, which is conducive to shaking off excess water and adsorbed particles on the filter 104, especially shaking off the water collected in the lower pit 120. During the vibration process, it is more conducive to the particles at other positions on the filter 104 to gather in the lower pit 120 with the water flow.

[0033] In some exemplary implementations of the present embodiment, a layer of densely arranged bristles 130 is fixedly connected to the outer side of the rolling ball 110 , and the bristles 130 are arranged along the radial direction of the rolling ball 110 .

[0034] On one hand, the bristles 130 have a water absorbing function, and the absorbed water is squeezed out during the extrusion process to flush the rolled position of the filter 104, thereby cleaning the filter 104; on the other hand, when the bristles 130 are inserted into the mesh of the filter 104, the filter 104 can be rolled and cleaned; on the other hand, the grip of the rolling ball 110 on the filter 104 can be improved, thereby improving the rolling efficiency of the rolling ball 110.

[0035] Combination Figure 7 As shown, in some exemplary implementations of the present embodiment, the industrial waste gas purification device also includes a first upper bracket 132, a first lower bracket 134, and a second bracket 136 which are arranged in sequence from bottom to top and fixedly connected to the inside of the spray box 100, the rotating motor 116 is fixedly connected to the center of the first upper bracket 132, the upper end of the rotating shaft 112 is rotatably connected to the center of the upper bracket, the lower end of the rotating shaft 112 is rotatably connected to the center of the first lower bracket 134, the filter 104, the rolling ball 110, and the push rod 114 are located between the first upper bracket 132 and the first lower bracket 134; the sprayer 106 is fixedly connected to the center position of the second bracket 136.

[0036] In some exemplary implementations of the present embodiment, the rolling balls 110 and the push rods 114 are arranged in pairs and are symmetrically arranged on both sides of the rotating shaft 112 with a point on the rotating shaft 112 as the center symmetry point. One of the rolling balls 110 is located below the filter screen 104 and is pressed tightly with the lower surface of the filter screen 104 and rolls the lower surface of the filter screen 104 to form an upper pit 138. The spray box 100 adopts a cylindrical box body with an open top and a closed bottom. The filter screen 104 is circular in shape. The edge of the filter screen 104 is fixedly connected to a frame and is fixedly connected to the inner wall of the spray box 100 through the frame. The upper edge of the lower pit 120 and the lower edge of the upper pit 138 are circular in shape and have a diameter equal to the radius of the filter screen 104. The edge of the pit refers to the boundary between the pit and the filter screen 104 where it is not rolled (such as Figure 3 The dotted line indicated by B in the figure indicates the boundary).

[0037] The lower pit 120 and the upper pit 138 move synchronously around the rotating shaft 112 in a circular motion, which improves the surface shape transformation efficiency of the filter 104, and at the same time generates circumferential momentum for the water mist and airflow in the space above the filter 104. The airflows above and below the filter 104 all spiral upward, which improves the directionality of the airflow. The horizontal motion component of the airflow can improve the collision efficiency between the exhaust gas and the water mist. The weight of the water mist droplets is different from the weight, volume, and shape of the particles in the exhaust gas. Therefore, the two will move relative to each other in the horizontal direction during the spiral motion. Moreover, the water mist droplets generally move downward, while the exhaust gas generally rises, so they will also move relative to each other in the vertical direction. The spiral airflow can eliminate part of the turbulence, thereby improving the contact efficiency between the exhaust gas and the water mist. On the other hand, the filter 104 is subjected to periodic upward and downward rolling, which is conducive to the shedding of particles, dirt, and water adsorbed on the filter 104, thereby improving the self-cleaning efficiency of the filter 104.

[0038] Combination Figure 8 As shown, in some exemplary implementations of the present embodiment, the first upper bracket 132, the first lower bracket 134, the rotating motor 116, the rotating shaft 112, the push rod 114, the rolling ball 110, and the filter screen 104 constitute a filter assembly, and there are multiple filter assemblies, each filter assembly is arranged in a vertical direction, and the rotating shafts 112 in adjacent filter assemblies rotate in opposite directions.

[0039] Between two adjacent filter components, the airflow passing through the lower filter component rises in a clockwise spiral. When it encounters the upper filter component, it is thrusted counterclockwise, offsetting part of the clockwise motion, or being driven to counterclockwise spiral motion. During this state switching process, the airflow convection speed can be increased, and the water droplets and mist droplets shaken off by the upper filter component grid form secondary water mist. The secondary water mist and the rising airflow convection improve the adsorption and purification efficiency of the exhaust gas. Since the airflow motion state switching is regular, it will not produce large turbulence.

[0040] In some exemplary implementations of this embodiment, the sprayer 106 and the second bracket 136 constitute a spray assembly, there are multiple spray assemblies, each spray assembly is located between two adjacent filter assemblies, and the sprayer 106 has two groups of nozzles 140 and is respectively arranged upward and downward.

[0041] The spray assembly can spray the space between two adjacent filter assemblies to avoid insufficient spray density near the lower filter assembly.

[0042] The embodiments of the present application have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. An industrial waste gas purification device, characterized in that: The invention comprises a spray box (100), a partition (102) fixedly connected to the inside of the spray box (100), a filter (104), a sprayer (106), and an air pump (108), wherein the partition (102) and the filter (104) are arranged horizontally, the partition (102) is located below the filter (104), the wires of the filter (104) are made of elastic material, and the sprayer (106) is located above the filter (104); and further comprises a rolling ball (110), a rotating shaft (112), a push rod (114), and a rotating motor (116) located inside the spray box (100), wherein the rotating motor (116) is fixedly connected to the spray box (100), and the rotating motor (116) and the rolling ball (110) are located below the sprayer (106) and above the filter. Above the net (104), the lower surface of the rolling ball (110) is pressed and contacted with the upper surface of the filter screen (104), one end of the push rod (114) is connected to the rolling ball (110), and the other end of the push rod (114) is fixedly connected to the rotating shaft (112), the rotating shaft (112) passes through the center of the filter screen (104), and the outer side surface of the rotating shaft (112) is provided with a limiting groove (118), the center position of the filter screen (104) is inserted into the limiting groove (118), and the rolling ball (110) rolls on the upper surface of the filter screen (104) to form a lower pit (120); the input end of the air pump (108) is connected to the top of the space below the partition (102), and the output port of the air pump (108) is connected to the bottom of the space above the partition (102).

2. The industrial waste gas purification device according to claim 1, characterized in that: One end of the push rod (114) close to the rolling ball (110) is fixedly connected to a U-shaped retaining frame (122) with an opening facing downwards; the upper middle portion of the rolling ball (110) is located inside the retaining frame (122); the inner side of the lower end of the retaining frame (122) is fixedly connected to a fixed shaft (124); the fixed shaft (124) passes through the center of the rolling ball (110) along the radial direction of the rotating shaft (112) and is rotatably connected to the rolling ball (110).

3. The industrial waste gas purification device according to claim 2, characterized in that: The rolling ball (110) is configured as a hollow structure, and the rolling ball (110) is made of an elastic material.

4. The industrial waste gas purification device according to claim 3, characterized in that: A plurality of support frames (126) are fixedly connected inside the rolling ball (110), each of the support frames (126) is located on a plane passing through the central axis of the rolling ball (110), and each of the support frames (126) is distributed in a circular array around the central axis of the rolling ball (110).

5. The industrial waste gas purification device according to claim 4, characterized in that: A steel ball (128) is arranged inside the rolling ball (110), the inner side surface of the support frame (126) is arranged parallel to the inner wall of the rolling ball (110), and the maximum distance of the inner side surface of the support frame (126) in the vertical direction is greater than the diameter of the steel ball (128).

6. The industrial waste gas purification device according to claim 3, characterized in that: A layer of densely arranged bristles (130) is fixedly connected to the outer side surface of the rolling ball (110), and the bristles (130) are arranged along the radial direction of the rolling ball (110).

7. The industrial waste gas purification device according to any one of claims 1 to 6, characterized in that: The industrial waste gas purification device further comprises a first upper bracket (132), a first lower bracket (134), and a second bracket (136) which are sequentially arranged from bottom to top and fixedly connected inside the spray box (100); the rotating motor (116) is fixedly connected to the center of the first upper bracket (132); the upper end of the rotating shaft (112) is rotatably connected to the center of the upper bracket; the lower end of the rotating shaft (112) is rotatably connected to the center of the first lower bracket (134); the filter screen (104), the rolling ball (110), and the push rod (114) are located between the first upper bracket (132) and the first lower bracket (134); and the sprayer (106) is fixedly connected to the center of the second bracket (136).

8. The industrial waste gas purification device according to claim 7, characterized in that: The rolling balls (110) and the push rods (114) are arranged in pairs and are symmetrically arranged on both sides of the rotating shaft (112) with a point on the rotating shaft (112) as the center symmetry point. One of the rolling balls (110) is located below the filter screen (104) and is pressed tightly against the lower surface of the filter screen (104) and rolls the lower surface of the filter screen (104) to form an upper pit (138). The upper edge of the lower pit (120) and the lower edge of the upper pit (138) are circular in shape and have a diameter equal to the radius of the filter screen (104).

9. The industrial waste gas purification device according to claim 8, characterized in that: The first upper bracket (132), the first lower bracket (134), the rotating motor (116), the rotating shaft (112), the push rod (114), the rolling ball (110), and the filter screen (104) constitute a filter assembly. There are a plurality of filter assemblies, each of which is arranged in a vertical direction, and the rotating shafts (112) in adjacent filter assemblies rotate in opposite directions.

10. The industrial waste gas purification device according to claim 9, characterized in that: The sprayer (106) and the second bracket (136) form a spray assembly. There are a plurality of spray assemblies, each of which is located between two adjacent filter assemblies. The sprayer (106) has two groups of spray heads (140) which are respectively arranged upward and downward.

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