Paint mist tail gas filtering device

Abstract

The paint mist tail gas filtering device comprises a feeding mechanism, a filtering mechanism and a filtering cylinder, the feeding mechanism is connected with the filtering cylinder, and the filtering mechanism is arranged in the filtering cylinder; an air inlet and an air outlet are formed in the filter cartridge, the filter mechanism is located between the air inlet and the air outlet, and a filter cotton belt is arranged in the filter mechanism; the cleaning mechanism is located below the filter cartridge, and the cleaning mechanism is used for cleaning the filter cotton belt; the feeding mechanism is located between the discharging end of the filtering mechanism and the feeding end of the cleaning mechanism, and the feeding mechanism is used for pulling the cleaned filtering cotton belt in the cleaning mechanism into the filtering mechanism and pulling the used filtering cotton belt in the filtering mechanism into the cleaning mechanism. According to the paint mist tail gas filtering device, the filtering mechanism, the feeding mechanism and the cleaning mechanism are arranged, automatic feeding can be achieved, the cleaning mechanism can clean the used filtering cotton belt in the filtering mechanism, and therefore cyclic utilization is achieved, and the cost of the filtering cotton belt is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of paint mist tail gas treatment equipment, in particular to a paint mist tail gas filtering device. BACKGROUND

[0002] The tail gas generated in the paint spraying coating operation is mainly composed of liquid paint mist and gaseous organic dust, and if it is directly discharged, it will pollute the production environment and equipment, so the paint spraying tail gas needs to be treated and filtered to meet the environmental emission requirements.

[0003] In the prior art, the paint spraying tail gas is mostly treated by washing and absorption, activated carbon filtration or direct combustion, however, in the washing and absorption, a corresponding washing liquid needs to be provided, and multiple cycles of washing are required to meet the environmental emission requirements, so the device structure is large and the filtering efficiency is low; in the activated carbon filtration device, the activated carbon needs to be replaced manually and regularly, and the replacement procedure is complex; and when the paint mist tail gas is treated by direct combustion, the preheating energy consumption is high and the treatment cost is high.

[0004] Therefore, the treatment method for paint mist tail gas in the prior art has further improvement space. CONTENT OF THE UTILITY MODEL

[0005] Therefore, in view of the technical problems of the prior art that the paint mist tail gas needs to be filtered multiple times, the filter replacement procedure is complex, and the filtering efficiency is low, the present application provides a paint mist tail gas filtering device which can automatically replace the filter cotton belt and automatically clean the filter cotton belt, thereby reducing the cost and improving the filtering efficiency.

[0006] The present application provides a paint mist tail gas filtering device, which comprises a feeding mechanism, a filtering mechanism and a filter cartridge, the feeding mechanism is connected with the filter cartridge, and the filtering mechanism is arranged in the filter cartridge;

[0007] The filter cartridge is provided with an air inlet and an air outlet, the filtering mechanism is located between the air inlet and the air outlet, and the filtering mechanism is provided with a filter cotton belt;

[0008] The cleaning mechanism is located below the filter cartridge, and the cleaning mechanism is used for cleaning the filter cotton belt;

[0009] The feeding mechanism is located between the discharge end of the filtering mechanism and the feeding end of the cleaning mechanism, and is used for pulling the filter cotton belt that has been cleaned in the cleaning mechanism into the filtering mechanism and pulling the filter cotton belt that has been used in the filtering mechanism into the cleaning mechanism.

[0010] Compared with the prior art, the paint mist tail gas filtering device has a filtering mechanism, a feeding mechanism and a cleaning mechanism, and the filtering mechanism is located between the air inlet and the air outlet of the filter cartridge. When the paint mist tail gas flows from the air inlet to the air outlet, it will pass through the filtering mechanism, thereby realizing the filtering of the paint mist tail gas. In the present application, the filtering of the paint mist tail gas is realized by using the filter cotton belt. The material of the filter cotton belt is a multi-layer structure, which can effectively adsorb dust and other substances in the paint mist tail gas, thereby improving the filtering effect. In addition, the present application provides a feeding mechanism. The feeding mechanism can drive the filter cotton belt to move, thereby realizing the automatic replacement of the filter core, saving labor cost, simplifying the replacement procedure and improving the filtering efficiency. In addition, the cleaning mechanism can clean the used filter cotton belt in the filtering mechanism. The cleaned filter cotton belt will be pulled into the filtering mechanism again by the feeding mechanism, thereby realizing the recycling, reducing the cost of the filter cotton belt and the labor replacement time and cost, thereby improving the work efficiency.

[0011] Preferably, the cleaning mechanism comprises a cleaning tank and an ultrasonic generator. The cleaning tank is loaded with a cleaning liquid for cleaning the filter cotton belt.

[0012] The ultrasonic generator is arranged in the cleaning tank for assisting in cleaning the filter cotton belt.

[0013] Preferably, the cleaning mechanism comprises a first feeding port and a first discharging port, and the filtering mechanism comprises a second feeding port and a second discharging port.

[0014] The first feeding port and the second discharging port are arranged on the same side, and the feeding mechanism is located between the first feeding port and the second discharging port.

[0015] The first discharging port and the second feeding port are arranged on the same side.

[0016] Preferably, a spraying area and a drying area are arranged between the first discharging port and the second feeding port. The spraying area is located above the drying area.

[0017] The spraying area is used for spraying the filter cotton belt, and the drying area is used for drying the sprayed filter cotton belt.

[0018] The drying area and the second feeding port are provided with a detector for detecting whether the filter cotton belt needs to be replaced.

[0019] Preferably, the feeding mechanism comprises a reel assembly and a driving assembly. The reel assembly is connected with the driving assembly, and the driving assembly is connected with the filter cartridge. The driving assembly is used for driving the reel assembly to rotate.

[0020] The filter cotton belt is attached to a reel assembly for driving the filter cotton belt to move.

[0021] Preferably, the reel assembly comprises a first reel and a second reel, which are arranged in parallel along the same horizontal plane.

[0022] The first reel is rotatably connected to both ends of the filter cartridge, and the second reel is rotatably connected to both ends of the filter cartridge.

[0023] The first reel is connected to the driving assembly.

[0024] Preferably, the reel assembly further comprises a third reel and a fourth reel, which are arranged in parallel along the same vertical plane, and the third reel is rotatably connected to both ends of the filter cartridge, and the second reel is rotatably connected to both ends of the filter cartridge.

[0025] In the vertical direction, the third reel is located above the first reel, and the fourth reel is located above the third reel.

[0026] In the horizontal direction, the third reel is located on the side of the first reel close to the filter cartridge, and the first reel is located between the second reel and the third reel.

[0027] Preferably, the filter cartridge is provided with a clamping mechanism, which comprises an upper clamping plate and a lower clamping plate, and the upper clamping plate and the lower clamping plate have a material passing channel therebetween for the filter cotton belt to pass through.

[0028] The clamping mechanism is provided on the outside of the inlet and the outlet, and the material passing channel is in communication with the inlet and the outlet.

[0029] Preferably, the upper clamping plate and the lower clamping plate are provided with a driving oil cylinder, which is used to drive the upper clamping plate and the lower clamping plate to move in the vertical direction to change the size of the material passing channel.

[0030] The side of the upper clamping plate and the lower clamping plate close to the material passing channel is provided with a roller to reduce the friction on the filter cotton belt.

[0031] Preferably, the filter mechanism comprises a filter screen, which is connected to the inner wall of the filter cartridge.

[0032] The filter screen is divided into an upper filter screen and a lower filter screen, the upper filter screen is arranged at the upper end of the lower filter screen, and the upper filter screen and the lower filter screen have a space for accommodating the filter cotton belt.

[0033] The paint mist tail gas filter device of the present application has at least the following technical effects:

[0034] 1、By setting the feeding mechanism, the filter core in the filter mechanism can be automatically replaced, the filter core replacement procedure is saved, the labor cost is reduced, and the filtering efficiency is improved; and the cleaning mechanism is arranged below the filter cylinder, the cleaning mechanism can be used to clean the used filter cotton belt, so that the paint mist tail gas filtering device can have a cleaning function, the cleaned filter cotton belt can be driven by the feeding mechanism to be conveyed into the filter mechanism, realizing recycling, and greatly reducing the use cost.

[0035] 2、By setting the clamping mechanism outside the discharge port and the feeding port, the clamping mechanism includes an upper clamping plate and a lower clamping plate, a material passing channel is formed between the upper clamping plate and the lower clamping plate, and the upper clamping plate and the lower clamping plate can displace along the vertical direction under the action of the driving oil cylinder, so as to change the size of the material passing channel, so as to cooperate with the feeding of the filter mechanism, that is, when the filter mechanism feeds, the material passing channel is enlarged, and the filter cotton belt is quickly fed into the filter mechanism, and when the filter mechanism works, the material passing channel is reduced, so as to clamp the filter cotton belt, so that the filter cotton belt is not easily shaken, and the discharge port and the feeding port are shielded, so that the paint mist tail gas in the filter cylinder is difficult to leak from the discharge port and the feeding port;

[0036] 3、By setting the reel assembly and the driving assembly, the reel assembly is attached to the filter cotton belt, and the driving assembly is used to drive the reel assembly to rotate, so that the reel assembly can pull the filter cotton belt, and automatic cotton replacement in the filter mechanism is realized. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 is a front view structural schematic diagram of a paint mist tail gas filtering device provided by an embodiment of the present application;

[0038] Figure 2 is a side view structural schematic diagram of a paint mist tail gas filtering device provided by an embodiment of the present application;

[0039] Figure 3 is Figure 1 an enlarged schematic diagram of part A of

[0040] Figure 4 is Figure 1 an enlarged schematic diagram of part B of

[0041] Figure 5 is a structural schematic diagram of a filter mechanism provided by an embodiment of the present application.

[0042] Reference signs: 1, paint mist tail gas filtering device; 2, filter cartridge; 3, filter cotton belt; 4, air inlet; 5, air outlet; 6, detector; 7, filtering mechanism; 8, cleaning tank; 9, upper filter screen; 10, lower filter screen; 11, upper support column; 12, lower support column; 13, connecting part; 14, filtering part; 15, clamping mechanism; 16, upper clamping plate; 17, lower clamping plate; 18, material passing channel; 19, drive oil cylinder; 20, drive assembly; 21, reel assembly; 22, first reel; 23, second reel; 24, third reel; 25, fourth reel; 26, fifth reel; 27, roller; 28, first feeding port; 29, first discharging port; 30, sleeve; 31, ultrasonic generator; 32, second feeding port; 33, second discharging port; 34, sixth reel; 35, seventh reel; 36, eighth reel; 37, ninth reel; 38, spraying area; 39, drying area. DETAILED DESCRIPTION

[0043] In order for those skilled in the art to better understand the technical solutions of the present disclosure, the present disclosure will be described in detail, clearly and completely below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present disclosure and do not limit the present disclosure.

[0044] In the description of the present application, if the first, second, etc. are described for the purpose of distinguishing technical features, it should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the sequence of the technical features indicated.

[0045] Those skilled in the art should understand that in the disclosure of the present application, the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the above terms cannot be understood as limiting the present application.

[0046] The present application will be further described in detail below in combination with the drawings, see Figures 1 to 5 Description.

[0047] As Figures 1 to 2 shown, the present application provides a paint mist tail gas filtering device (hereinafter referred to as filtering device 1), which is used for filtering treatment of paint mist tail gas, so that the treated paint mist tail gas can meet the emission standard, avoiding environmental pollution.

[0048] Specifically, the filtering device 1 comprises a feeding mechanism, a filtering mechanism 7 and a filter cartridge 2, the filter cartridge 2 is internally provided with a space for accommodating paint mist tail gas, as shown in Figure 1 、 Figure 2 The bottom of the filter cartridge 2 is provided with supporting legs to elevate and support the filter cartridge 2, the lower sidewall of the filter cartridge 2 is provided with an air inlet 4, and the upper end surface of the filter cartridge 2 is provided with an air outlet 5, i.e. the air outlet 5 is located at the upper end of the air inlet 4, wherein a suction fan is arranged on one side of the air outlet 5 to suction and send the paint mist tail gas from the air inlet 4 to the air outlet 5; as shown in Figure 1 The filtering mechanism 7 is arranged in the filter cartridge 2, and the filtering mechanism 7 is located between the air outlet 5 and the air inlet 4 in the vertical direction, i.e. the air inlet 4, the filtering mechanism 7 and the air outlet 5 are sequentially arranged from bottom to top, the filtering mechanism 7 is internally provided with a filter cotton belt 3, the filter cotton belt 3 has a multi-layer structure and has good filtering effect, when the suction fan is running, the paint mist tail gas will pass through the filtering mechanism 7 in the process of flowing from the air inlet 4 to the air outlet 5, and the filter cotton belt 3 in the filtering mechanism 7 can better adsorb organic dust and other substances in the paint mist tail gas, so that the paint mist tail gas flowing out of the air outlet 5 has been filtered and treated to reach the environmental protection emission standard and is discharged outward;

[0049] In the embodiment, as shown in Figure 1 A cleaning mechanism is arranged below the filter cartridge 2 to clean the filter cotton belt 3 after filtering; the feeding mechanism is located between the discharge end of the filtering mechanism 7 and the feeding end of the cleaning mechanism, and is used to pull the filter cotton belt 3 that has been cleaned in the cleaning mechanism into the filtering mechanism 7, and is used to pull the filter cotton belt 3 that has been used in the filtering mechanism 7 into the cleaning mechanism, i.e. the cleaning mechanism can clean the filter cotton belt 3 that has been used in the filtering mechanism 7, the cleaned filter cotton belt 3 will be pulled into the filtering mechanism 7 again by the feeding mechanism, so as to realize recycling, reduce the cost of the filter cotton belt 3, and reduce the labor replacement time and cost, thereby improving the work efficiency.

[0050] Specifically, as shown in Figure 1As shown, the cleaning mechanism includes a first inlet 28 and a first outlet 29, and the filtering mechanism 7 includes a second inlet 32 and a second outlet 33; wherein the first inlet 28 is disposed on the same side as the second outlet 33, i.e. the first inlet 28 of the cleaning mechanism is disposed on the same side as the second outlet 33 of the filtering mechanism 7, and the feeding mechanism is located between the first inlet 28 and the second outlet 33; the first outlet 29 is disposed on the same side as the second inlet 32, i.e. the first outlet 29 of the cleaning mechanism is disposed on the same side as the second inlet 32 of the filtering mechanism 7; in this embodiment, the filter cotton belt 3 has a ring belt structure, and in use, the feeding mechanism pulls the filter cotton belt 3 in the filtering mechanism 7 out of the second outlet 33, enters the cleaning mechanism from the first inlet 28 of the cleaning mechanism, and the filter cotton belt 3 in the cleaning mechanism is pulled out of the first outlet 29 and enters the filtering mechanism 7 from the second inlet 32, achieving autonomous reciprocating circulation without the need for manual replacement of the filter cotton belt 3, thereby increasing the filtering efficiency and reducing labor costs.

[0051] Further, as shown in Figure 1 the cleaning mechanism includes a cleaning tank 8 and an ultrasonic generator 31, the cleaning tank 8 is located below the filter cylinder 2, the cleaning tank 8 is loaded with cleaning liquid, and the ultrasonic generator 31 is disposed in the cleaning tank 8. The ultrasonic generator 31 is at least one, which generates ultrasonic vibration to assist in accelerating the cleaning of the filter cotton belt 3; the bottom of the cleaning tank 8 is provided with a liquid outlet, and the upper end is provided with a liquid inlet to realize the replacement of the cleaning liquid. In this application, the ultrasonic generator 31 is two, which are respectively arranged at the upper end and the lower end of the cleaning tank 8, thereby increasing the uniformity to increase the cleaning effect.

[0052] Further, as shown in Figure 1 the upper end of the cleaning tank 8 is provided with a sixth spool 34 and a seventh spool 35, the sixth spool 34 and the seventh spool 35 are disposed in the cleaning tank 8 along the horizontal direction, and the sixth spool 34 and the seventh spool 35 are rotatably connected to the cleaning tank 8; the sixth spool 34 and the seventh spool 35 are spaced apart along the horizontal direction, the sixth spool 34 is close to the first inlet end of the cleaning tank 8, and the seventh spool 35 is close to the first outlet 29 end of the cleaning tank 8, and the filter cotton belt 3 is sequentially attached to the outer side of the lower end of the sixth spool 34 and the seventh spool 35. Among them, the lower end of the cleaning driven wheel is located in the cleaning liquid, which can bring the filter cotton belt 3 into the cleaning liquid, and also enable the filter cotton belt 3 between the two cleaning driven wheels to enter the cleaning liquid, thereby increasing the cleaning area of the filter cotton belt 3. In addition, it can also tension the filter cotton belt 3, so that the feeding mechanism can pull the filter cotton belt 3 out of the cleaning mechanism.

[0053] Further, as shown in Figure 4As shown, the fifth roller 26 is arranged on the opposite side wall of the feeding mechanism, connected to the outer side wall of the filter cylinder 2, and rotationally connected; the fifth roller 26 is located between the first discharge port 29 of the cleaning mechanism and the second feeding port 32 of the filtering mechanism 7, and has a horizontal spacing between the fifth roller 26 and the second discharge port in the horizontal direction, so as to increase the supporting length of the filter cotton belt 3 between the filtering mechanism and the cleaning mechanism, and to have a spacing between the filter cotton belt 3 and the filter cylinder 2, so that the filter cotton belt 3 outside the fifth roller 26 can be quickly air-dried, and the fifth roller 26 cooperates with the seventh roller 35 to tension the filter cotton belt 3.

[0054] Further, as shown in the drawings, Figure 4 As shown, the eighth roller 36 is arranged on the cleaning tank 8, and the ninth roller 37 is arranged below the feeding mechanism, the upper end surface of the eighth roller 36 and the lower end surface of the ninth roller 37 are on the same plane, and the eighth roller 36 cooperates with the ninth roller 37 to change the path of the filter cotton belt 3, so that the path is a multi-fold curve, to increase the contact points of the filter cotton belt 3, tension the filter cotton belt 3, and make the movement of the filter cotton belt 3 more smooth.

[0055] Further, as shown in the drawings, Figure 1 As shown, the first discharge port 29 and the second feeding port 32 are provided with a spraying area 38 and a drying area 39, and the spraying area 38 is located above the drying area 39; the spraying area 38 is used for spraying the filter cotton belt 3, and the spraying area 38 adopts a spraying head to spray the filter cotton belt 3 pulled out of the cleaning mechanism after cleaning, to realize secondary cleaning, and the drying area 39 is used for drying the sprayed filter cotton belt 3, which can be dried by a drying machine or natural drying, to ensure that the filter cotton belt 3 entering the filtering mechanism 7 is dry.

[0056] It should be noted that, in general, the filter cotton belt 3 stays in the filtering mechanism 7 for about 24 hours, therefore, the feeding mechanism pulls out the cleaned filter cotton belt 3 and stays in the drying area 39 below the fifth roller 26 for 24 hours, so that the filter cotton belt 3 can be naturally air-dried, and when entering the filtering mechanism 7, the filter cotton belt 3 has been air-dried, which will not affect the filtering effect.

[0057] In another optional embodiment of the present application, a detector 6 is arranged between the fifth spool 26 and the second feeding port 32, the detector 6 is connected to a connecting frame for mounting the detector 6, and a support rod is further arranged on the connecting frame, the detector 6 is located between the support rod and the second feeding port 32, and the support rod is used for supporting the filter cotton belt 3 to pass through the detector 6. When the detector 6 detects the filter cotton belt 3, it indicates that there is still filter cotton belt 3 in the cleaning mechanism, that is, the filter device 1 still has filter cotton belt 3 at this time. However, when the detector 6 does not detect the filter cotton belt 3, it indicates that the filter cotton belt 3 needs to be replaced. The detector 6 can be an infrared sensor or other sensing device. The detector 6 is used to detect whether the filter cotton belt 3 needs to be replaced, and plays a role of timely reminding the operator to replace the filter cotton belt 3, thereby improving the use convenience.

[0058] As shown in Figure 1 , Figure 3 , the filter mechanism 7 comprises a filter screen, the filter screen is connected with the inner wall of the filter cylinder 2, the filter screen is made of metal material, the filter screen is divided into an upper filter screen 9 and a lower filter screen 10, the upper filter screen 9 is arranged at the upper end of the lower filter screen 10, and the upper filter screen 9 and the lower filter screen 10 have a space for accommodating the filter cotton belt 3. The lower filter screen 10 is used for supporting the filter cotton belt 3, and the upper filter screen 9 is used for limiting the upward movement of the filter cotton belt 3 under the action of the fan. The distance between the upper filter screen 9 and the lower filter screen 10 is not much different from the thickness of the filter cotton belt 3, so that the filter mechanism 7 can better hold the filter cotton belt 3.

[0059] In the embodiment, as shown in Figure 1 , the opposite two side walls of the filter cylinder 2 are provided with a feeding port and a discharging port, the filter cotton belt 3 outside the filter cylinder 2 enters the filter mechanism 7 from the feeding port, and is then conveyed from the filter mechanism 7 to the outside of the filter cylinder 2 from the discharging port; a feeding mechanism is connected with the outer side wall of the filter cylinder 2, and the feeding mechanism is arranged on the same side of the discharging port. The feeding mechanism is used for pulling the filter cotton belt 3 to move, and the filter cotton belt 3 moves from the feeding port to the discharging port, so as to realize the replacement of the filter cotton belt 3 in the filter mechanism 7. The feeding mechanism is arranged below the filter mechanism 7, so as to facilitate pulling the filter mechanism 7.

[0060] As shown in Figures 1 to 4 , the feeding mechanism comprises a driving assembly 20 and a spool assembly 21, the driving assembly 20 is fixedly connected with the filter cylinder 2, and the spool assembly 21 is rotatably connected with the filter cylinder 2. The driving assembly 20 is connected with the spool assembly 21 to drive the spool assembly 21 to rotate. The spool assembly 21 is provided between the filter cotton belt 3, that is, the filter cotton belt 3 is attached to the spool assembly 21, so as to pull the filter cotton belt 3.

[0061] Specifically, as shown in Figure 1 , Figure 3As shown, the reel assembly 21 comprises a first reel 22 and a second reel 23, the first reel 22 and the second reel 23 are parallel and spaced apart along the same horizontal plane, the second reel 23 is located outside the first reel 22, and the spacing between the first reel 22 and the second reel 23 is just enough for the filter cotton belt 3 to pass through; the two ends of the first reel 22 are rotationally connected with the filter cartridge 2, and the two ends of the second reel 23 are rotationally connected with the filter cartridge 2; wherein, the first reel 22 is connected with the driving assembly 20, the filter cotton belt 3 is attached to the outside of the first reel 22, and the second reel 23 is used to cooperate with the first reel 22 to clamp the filter cotton belt 3, so as to ensure that the first reel 22 can pull the filter cotton belt 3 when driven by the driving assembly 20. In this embodiment, the driving assembly 20 comprises a driving motor, the driving motor is fixedly connected with the filter cartridge 2, the rotating shaft of the driving motor is arranged along the same straight line as the first reel 22, and the rotating shaft of the driving motor is fixedly connected with the first reel 22. The first reel 22 and the second reel 23 are rod-shaped, which can rotate relative to the filter cartridge 2, and the length of the first reel 22 and the second reel 23 is at least greater than the width of the filter cotton belt 3, so that the filter cotton belt 3 can move smoothly.

[0062] In this embodiment, by arranging the feeding mechanism and the discharge port on the same side, the length of the filter cotton belt 3 pulled by the first reel 22 can be better controlled. In actual use, the length of the filter cotton belt 3 required in the filtering mechanism 7 can be calculated to match the length of the filter cotton belt 3 that can be pulled by the first reel 22 in one rotation, and the required length of pulling can be determined by setting the number of rotations of the first reel 22, so that the filter cotton belt 3 in the filtering mechanism 7 can be replaced exactly when the feeding mechanism feeds once.

[0063] Further, as shown in the drawings, Figure 2 The first reel 22 of the present application is provided with a sleeve 30, the sleeve 30 is fixedly connected with the first reel 22, that is, the sleeve 30 is directly sleeved on the first reel 22; wherein, the sleeve 30 is provided with a plurality of annular protrusions, the plurality of annular protrusions are equidistantly spaced apart, the plurality of annular protrusions increase the contact points between the sleeve 30 and the filter cotton belt 3, thereby increasing the friction on the filter cotton belt 3, so that the first reel 22 can pull the filter cotton belt 3 in cooperation with the second reel 23.

[0064] Further, as shown in the drawings, Figure 1As shown, the feeding mechanism further comprises a third roller 24 and a fourth roller 25, which are located between the first roller 22 and the discharge port and are used to tension the filter cotton belt 3 to prevent the filter cotton belt 3 from loosening between the discharge port and the first roller 22, thereby avoiding affecting the pulling effect of the first roller 22 on the filter cotton belt 3; the third roller 24 and the fourth roller 25 are arranged in parallel and spaced apart along the same vertical plane, the two ends of the third roller 24 are rotatably connected to the filter cylinder 2, and the two ends of the second roller 23 are rotatably connected to the filter cylinder 2; wherein, in the vertical direction, the third roller 24 is located above the first roller 22; in the horizontal direction, the third roller 24 is located on the side of the first roller 22 close to the filter cylinder 2, the first roller 22 is located between the second roller 23 and the third roller 24, and the fourth roller 25 has a spacing with the discharge port; the filter cotton belt 3 passes through the outside of the fourth roller 25, the inside of the third roller 24 and the outside of the first roller 22 in sequence, so that the filter cotton belt 3 has not a single straight line but a zigzag line between the discharge port and the first roller 22, thereby increasing the stress points of the filter cotton belt 3, on the one hand, to tension the filter cotton belt 3 so that the pulling force of the first roller 22 on the filter cotton belt 3 is not reduced, and on the other hand, to make the filter cotton belt 3 move more smoothly to ensure smooth feeding.

[0065] As shown in the drawings, Figures 1 to 4 The filter cylinder 2 is provided with a clamping mechanism 15 connected to the outer wall of the filter cylinder 2, which is arranged outside the feeding port and the discharge port and comprises an upper clamping plate 16 and a lower clamping plate 17 with a material passing channel 18 therebetween, which is communicated with the feeding port and the discharge port for the filter cotton belt 3 to pass through, wherein the opening size of the material passing channel 18 in the vertical direction can be adjusted, when the filter mechanism 7 needs to replace the filter cotton belt 3, the material passing channel 18 is enlarged to speed up the filter cotton belt 3 to quickly enter the filter mechanism 7 or the used filter cotton belt 3 to quickly output from the filter mechanism 7; when the filter mechanism 7 is working, the opening of the material passing channel 18 in the vertical direction is reduced to less than the thickness of the filter cotton belt 3 to clamp the filter cotton belt 3 so that the filter cotton belt 3 does not easily shake and the discharge port and the feeding port are shielded, preventing the paint mist in the filter cylinder 2 from leaking out of the discharge port and the feeding port.

[0066] Specifically, as shown in the drawings, Figure 2 The end of the upper clamping plate 16 and the lower clamping plate 17 away from the material passing channel 18 is provided with a driving oil cylinder 19 connected to the outer wall of the filter cylinder 2, which is extended and retracted to drive the upper clamping plate 16 and the lower clamping plate 17 to move towards the material passing channel 18, i.e. the upper clamping plate 16 and the lower clamping plate 17 move in opposite directions to adjust the size of the material passing channel 18.

[0067] Further, as shown in Figure 3 The upper clamping plate 16 and the lower clamping plate 17 are provided with rollers 27 near one side of the material passing channel 18. The rollers 27 can roll relative to the upper clamping plate 16 and the lower clamping plate 17. When the filter cotton belt 3 passes through the material passing channel 18, the filter cotton belt 3 contacts the rollers 27, which can reduce the friction on the filter cotton belt 3, reduce the wear of the filter cotton belt 3, ensure the structural integrity of the filter cotton belt 3, and avoid affecting the filtering performance of the filter cotton belt 3.

[0068] It should be noted that the driving of the feeding mechanism and the clamping mechanism 15 in the present application is linked in the background, that is, when the feeding mechanism is driven, the clamping mechanism 15 is also correspondingly driven to realize the function of automatically replacing the filter cotton belt 3. The time for replacing the filter cotton belt 3, that is, the driving time and the driving interval time of the feeding mechanism can be set in the background, so that when the filter cotton belt 3 in the filtering mechanism 7 is almost used up, the filter cotton belt 3 can be automatically and timely replaced, which saves time and labor, saves labor cost and replacement procedure, and can normally operate without supervision, greatly improving the filtering efficiency.

[0069] In another optional embodiment of the present application, as shown in Figure 5 The filtering mechanism 7 further comprises support columns which are in a columnar structure. The outer side wall of the support column is connected with the side wall of the filter cylinder 2, and the support column is arranged on the side of the filter cylinder 2 at the inlet and the outlet. The support column is divided into an upper support column 11 and a lower support column 12. The upper filter screen 9 is connected with the upper support column 11, and the lower filter screen 10 is connected with the lower support column 12.

[0070] Further, the filter screen comprises a connecting portion 13 and a filtering portion 14. The connecting portion 13 is in an L shape. In the connecting portion 13 of the upper filter screen 9, the connecting portion 13 is connected with the upper side wall and the inner side wall of the upper support column 11. In the connecting portion 13 of the lower filter screen 10, the connecting portion 13 is connected with the lower side wall and the inner side wall of the lower support column 12. In the present embodiment, the distance between the lower side wall of the upper support column 11 and the upper side wall of the lower support column 12 is L1, and the distance between the lower side wall of the filtering portion 14 of the upper filter screen 9 and the upper side wall of the filtering portion 14 of the lower filter screen 10 is L2. L1>L2, that is, the distance between the two filtering portions 14 is smaller than the distance between the two support columns. The filter screen is mostly made of metal material, and the end portion has burrs or sharp corners which can damage the structure of the filter cotton belt 3. Therefore, such arrangement can avoid the contact between the end portion of the filter screen and the filter cotton belt 3, reduce the wear of the filter cotton belt 3 by the filter screen, and as far as possible ensure the structural integrity of the filter cotton belt 3 and the filtering performance of the filter cotton belt 3.

[0071] It should be noted that the embodiments of the present application can be arbitrarily combined into new embodiments under the condition that the technical solutions do not conflict and can coexist.

[0072] The above has been made a detailed introduction to the present application, the principle and implementation mode of the present application are described in this paper by applying specific examples, the above example is only used to help understand the present application and the core idea. It should be pointed out that for ordinary skilled in the art, without departing from the principle of the present application, the present application can be improved and modified, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A paint mist exhaust filtration device characterized by, The device comprises a feeding mechanism, a filtering mechanism (7) and a filter cartridge (2), the feeding mechanism is connected with the filter cartridge (2), and the filtering mechanism (7) is arranged in the filter cartridge (2); An air inlet (4) and an air outlet (5) are arranged on the filter cartridge (2), the filtering mechanism (7) is located between the air inlet (4) and the air outlet (5), and the filtering mechanism (7) is provided with a filter cotton belt (3); The device further comprises a cleaning mechanism, the cleaning mechanism is located below the filter cartridge (2), and the cleaning mechanism is used for cleaning the filter cotton belt (3); The feeding mechanism is located between the discharge end of the filtering mechanism (7) and the feeding end of the cleaning mechanism, the feeding mechanism is used for pulling the filter cotton belt (3) cleaned in the cleaning mechanism into the filtering mechanism (7), and is used for pulling the filter cotton belt (3) used in the filtering mechanism (7) into the cleaning mechanism.

2. The device according to claim 1, wherein The cleaning mechanism comprises a cleaning tank (8) and an ultrasonic generator (31), the cleaning tank (8) is loaded with a cleaning liquid and is used for cleaning the filter cotton belt (3); and the ultrasonic generator (31) is arranged in the cleaning tank (8) and is used for assisting in cleaning the filter cotton belt (3).

3. The device according to claim 1, wherein The cleaning mechanism comprises a first feeding port (28) and a first discharge port (29), and the filtering mechanism (7) comprises a second feeding port (32) and a second discharge port (33); the first feeding port (28) is arranged on the same side as the second discharge port (33), the feeding mechanism is located between the first feeding port (28) and the second discharge port (33); and the first discharge port (29) is arranged on the same side as the second feeding port (32).

4. The device according to claim 3, wherein A spraying area (38) and a drying area (39) are arranged between the first discharge port (29) and the second feeding port (32), the spraying area (38) is located above the drying area (39); the spraying area (38) is used for spraying the filter cotton belt (3), and the drying area (39) is used for drying the filter cotton belt (3) after spraying; and a detector (6) is arranged between the drying area (39) and the second feeding port (32), and the detector (6) is used for detecting whether the filter cotton belt (3) needs to be replaced.

5. The device according to any one of claims 1 to 4, wherein The feeding mechanism comprises a reel assembly (21) and a driving assembly (20), the reel assembly (21) is connected with the driving assembly (20), the driving assembly (20) is connected with the filter cartridge (2), and the driving assembly (20) is used for driving the reel assembly (21) to rotate; and the filter cotton belt (3) is attached to the reel assembly (21), and the reel assembly (21) is used for moving the filter cotton belt (3). ​ ​ ​ ​ ​ ​ 6.The paint mist exhaust filtering device according to claim 5, characterized in that, the reel assembly (21) comprises a first reel (22) and a second reel (23) which are arranged in parallel along the same horizontal plane; the first reel (22) is rotatably connected to the filter cartridge (2) at both ends, and the second reel (23) is rotatably connected to the filter cartridge (2) at both ends; wherein the first reel (22) is connected to the driving assembly (20). 7.The paint mist exhaust filtering device according to claim 6, characterized in that, the reel assembly (21) further comprises a third reel (24) and a fourth reel (25) which are arranged in parallel along the same vertical plane, the third reel (24) is rotatably connected to the filter cartridge (2) at both ends, and the second reel (23) is rotatably connected to the filter cartridge (2) at both ends; in the vertical direction, the third reel (24) is located above the first reel (22), and the fourth reel (25) is located above the third reel (24); in the horizontal direction, the third reel (24) is located on the side of the first reel (22) close to the filter cartridge (2), and the first reel (22) is located between the second reel (23) and the third reel (24). 8.The paint mist exhaust filtering device according to claim 5, characterized in that, the filter cartridge (2) is provided with a clamping mechanism (15), the clamping mechanism (15) comprises an upper clamping plate (16) and a lower clamping plate (17), and the upper clamping plate (16) and the lower clamping plate (17) have a material passing channel (18) therebetween for the filter cotton belt (3) to pass through; wherein opposite side walls of the filter cartridge (2) are provided with an inlet and an outlet, and the inlet and the outlet are both provided with a clamping mechanism (15) outside, and the material passing channel (18) is in communication with the inlet and the outlet. 9.The paint mist exhaust filtering device according to claim 8, characterized in that, the upper clamping plate (16) and the lower clamping plate (17) are provided with a driving oil cylinder (19), and the driving oil cylinder (19) is used to drive the upper clamping plate (16) and the lower clamping plate (17) to move in the vertical direction to change the size of the material passing channel (18); wherein the side of the upper clamping plate (16) and the lower clamping plate (17) close to the material passing channel (18) is provided with a roller (27) to reduce the friction on the filter cotton belt (3). 10.The paint mist exhaust filtering device according to claim 5, characterized in that, the filtering mechanism (7) comprises a filter screen, and the filter screen is connected to the inner side wall of the filter cartridge (2); the filter screen is divided into an upper filter screen (9) and a lower filter screen (10), the upper filter screen (9) is arranged at the upper end of the lower filter screen (10), and the upper filter screen (9) and the lower filter screen (10) have a space for accommodating the filter cotton belt (3).

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