A kind of automobile body painting exhaust gas rotary concentrator equipment

Abstract

The present application relates to the technical field of waste gas treatment, in particular to a kind of automobile body painting waste gas runner concentration equipment, including concentration processing box, main shaft group and moving screen group, through accurate airflow control and the high-efficiency adsorption of molecular sieve plate, the efficient adsorption and purification of harmful ingredients in waste gas are realized.Especially through the volume change of cavity volume generated by eccentric motion of cylinder sleeve ring, the recyclable ingredients in waste gas can be effectively desorbed and concentrated on the surface of molecular sieve plate, improve the waste gas purification efficiency, and recover the valuable ingredients in waste gas.The airflow in the equipment can pass through the molecular sieve plate multiple times, improve the desorption effect, while continuously operating at lower energy consumption, reduce the equipment downtime, prolong the service life of the equipment.Compared with the traditional waste gas treatment technology, the present application has efficient waste gas treatment capacity, low energy consumption, high resource recovery rate and stable operation, and has wide application prospect.

Description

Technical Field

[0001] This invention relates to the field of waste gas treatment technology, specifically to a rotary concentrator for waste gas from automobile body painting. Background Technology

[0002] Currently, the automotive painting industry typically uses traditional exhaust gas purification equipment for treatment. These devices mostly rely on simple physical filtration or chemical adsorption principles to purify the exhaust gas. Common exhaust gas treatment devices include activated carbon adsorption units, wet scrubbing towers, and electrostatic precipitators. These traditional devices generally adsorb harmful substances from the exhaust gas using adsorbents or filter media, and then clean themselves by periodically replacing or regenerating the adsorbent. However, these traditional devices have the following drawbacks in treating exhaust gas: Traditional technologies mostly rely on single adsorption or filtration methods, which often results in unsatisfactory removal of harmful substances from waste gas, especially when treating high-concentration waste gas. In such cases, purification efficiency is low, harmful components are not completely removed, and emission standards cannot be met. Existing technologies often rely solely on simple airflow filtration and adsorption processes to recover recyclable components from waste gas. This leads to insufficient desorption and recovery of recyclable components, resulting in resource waste and increased treatment costs.

[0003] Most traditional waste gas treatment equipment requires significant energy to maintain its operation, especially for efficient purification and desorption of waste gases. This results in low operating efficiency and high energy consumption, leading to increased treatment costs. Furthermore, the short maintenance and operation cycles further increase operating costs for businesses. Existing equipment requires frequent replacement or cleaning of the adsorbent material, resulting in prolonged downtime and high maintenance costs. Over long-term operation, the performance of the adsorbent gradually deteriorates, affecting the overall efficiency of waste gas treatment.

[0004] In view of this, this paper studies and improves upon the existing problems, and provides a rotary concentrator for automotive body painting exhaust gas to solve the current problems. The aim is to solve the problems and improve the practical value through this technology. Summary of the Invention

[0005] This invention provides a rotary concentrator for exhaust gas from automotive body painting, designed to effectively purify the exhaust gas generated during the painting process and recover its usable components. Through its unique structure and working principle, this equipment significantly improves exhaust gas purification efficiency, reduces environmental pollution, and effectively recovers recyclable components from the exhaust gas, possessing broad application value and market prospects.

[0006] A rotary concentrator for automotive body painting exhaust gas includes a concentrator box, a main shaft assembly, and a moving screen assembly. The concentrator box has an inlet end cap and an exhaust end cap on both sides. An acirculation channel and a treatment chamber are formed inside the concentrator box, with the acirculation channel surrounding the outer periphery of the treatment chamber. A clean gas outlet and an exhaust gas inlet, communicating with both ends of the acirculation channel, are fixedly connected to the surface of the concentrator box. The surface of the concentrator box has a clean gas inlet, and the surface of the exhaust end cap has several exhaust holes. A rotary valve core is rotatably installed inside the exhaust end cap, and a valve port is formed on the surface of the rotary valve core. The design of the concentrator box ensures that the exhaust gas can flow fully between the acirculation channel and the treatment chamber after entering the equipment, and is discharged through the clean gas outlet after thorough purification. The exhaust end cap and rotary valve core ensure unidirectional flow of the exhaust gas, thereby improving the exhaust gas treatment efficiency.

[0007] The main shaft assembly includes a shaft, a crank wheel, and a cylinder ring rotatably sleeved on the outside of the crank wheel. The surface of the crank wheel is provided with a stop wheel that slides against the inner side of the cylinder ring. The center of the cylinder ring is offset from the shaft axis. The eccentric motion of the main shaft assembly drives the cylinder ring to rotate eccentrically, thereby pushing the sliding guide frame to reciprocate within the arc groove, effectively improving the speed and accuracy of exhaust gas treatment.

[0008] The moving screen assembly includes a shaft pin, a sliding guide frame, and a spring fixed to the surface of the concentration box. The shaft pin is rotatably mounted inside the concentration box, and one end of the shaft pin has a rotating lug plate fixedly connected to the surface of the sliding guide frame. A one-way valve plate and a molecular sieve plate are snapped together on the inner side of the sliding guide frame. The inner side of the concentration box has several evenly distributed arc grooves, and the sliding guide frame is slidably mounted inside the arc grooves. One end of the shaft pin is connected to the end of the spring. The design of the moving screen assembly effectively promotes the desorption and concentration of waste gas through the reciprocating motion of the sliding guide frame, enabling harmful substances in the waste gas to be effectively adsorbed by the molecular sieve plate, while ensuring the stability of the equipment during long-term operation.

[0009] In a preferred embodiment, the present invention can be further configured such that: a cooling box is provided on the surface of the exhaust gas inlet for cooling and introducing exhaust gas from automobile body painting; the exhaust gas inlet, the treatment chamber and the clean gas outlet form an exhaust gas passage, so that the exhaust gas passes through the surface of each molecular sieve plate for adsorption and purification one by one.

[0010] Through the above technical solution, the cooling box can effectively reduce the temperature of the exhaust gas, making it easier for harmful substances in the exhaust gas to be adsorbed by the molecular sieve plate, thereby enhancing the purification effect of the exhaust gas.

[0011] In a preferred embodiment, the present invention can be further configured as follows: the clean gas inlet has a built-in one-way air inlet valve for one-way input of clean gas, and a gas heater is provided on its surface for heating the clean gas; the clean gas inlet is connected to the interior of the processing chamber and an annular air inlet is provided at the connection point.

[0012] The above technical solution allows pure gas to enter the equipment stably through the combined use of a one-way inlet valve and a gas heater, and by increasing the temperature of the pure gas, it promotes the desorption of components adsorbed by the molecular sieve plate.

[0013] In a preferred embodiment, the present invention can be further configured as follows: a plurality of the sliding guide frames are evenly distributed in the circumferential direction, and adjacent sliding guide frames slide against the surface of the cylinder liner ring to form independent cavities, and each independent cavity changes volume as the cylinder liner ring swings eccentrically; the exhaust through hole is connected to each independent cavity in a one-to-one correspondence.

[0014] Through the above technical solution, the uniform distribution of the sliding guide frame and the eccentric movement of the cylinder liner ring can form multiple independent cavities. The volume change within the cavities enables the exhaust gas to be desorbed and concentrated more efficiently inside the equipment.

[0015] In a preferred embodiment, the present invention can be further configured such that: the rotary valve core is fixedly connected to the end of the shaft and rotates synchronously with the shaft; the outer wall of the rotary valve core slides against the surface of the exhaust end cover for sealing the exhaust port; and the valve port is located on the side offset from the center of the cylinder liner ring for opening a single exhaust port to release gas.

[0016] Through the above technical solution, the design of the rotary valve core ensures precise control of the exhaust port, enabling exhaust gas to be released unidirectionally when needed, thus avoiding backflow and leakage of exhaust gas.

[0017] In a preferred embodiment, the present invention can be further configured such that: the outer periphery of the one-way valve plate slides against the inner side of the arc groove and the two sides of the guide frame are connected to the inner side of the treatment chamber, for guiding the exhaust gas through the surface of the one-way valve plate and the molecular sieve plate; the surface of the one-way valve plate is provided with a plurality of valve controls and deflectable valve plates, for the airflow to unidirectionally flow from the exhaust gas inlet to the clean gas outlet inside the circulation channel.

[0018] The above technical solution ensures the unidirectional flow of exhaust gas, thereby effectively improving the efficiency of exhaust gas purification and preventing reverse flow of air.

[0019] In a preferred embodiment, the present invention can be further configured such that: the spring is in the shape of a planar helical spring, and the two ends of the spring are respectively fixed to the inner side of the concentration treatment box and the end of the shaft pin, for driving the shaft pin and the sliding guide frame to deflect, so that one side of the sliding guide frame always maintains elastic contact with the cylinder ring surface.

[0020] Through the above technical solution, the elastic force provided by the clock spring ensures that the sliding guide frame can always be in close contact with the cylinder liner ring surface, thereby ensuring the continuous and efficient operation of the equipment during long-term operation.

[0021] In a preferred embodiment, the present invention can be further configured such that the molecular sieve plate is composed of multiple honeycomb structural units, which are used to effectively adsorb harmful substances in waste gas and have good air permeability and chemical adsorption performance.

[0022] Through the above technical solution, the honeycomb structure molecular sieve plate has a higher surface area and stronger adsorption capacity, which can effectively remove harmful substances in waste gas, maintain good air permeability, and improve work efficiency while ensuring purification effect.

[0023] The automotive body painting exhaust gas rotary concentrator provided by this invention, through its ingenious design and optimized structural components, makes the exhaust gas purification and component recovery process more efficient and stable. The unique design and function of each component ensures that the exhaust gas can be fully purified and useful components can be effectively recovered during the treatment process, thereby greatly improving the equipment's purification efficiency and resource recovery capacity, and has broad prospects for industrial applications.

[0024] The beneficial effects achieved by this invention are as follows: 1. In this invention, precise airflow control and the efficient adsorption of molecular sieve plates achieve highly efficient adsorption and purification of harmful components in waste gas. In particular, after the waste gas undergoes dual treatment by the cooling chamber and molecular sieve plates, the pollutant content in the waste gas is significantly reduced, thereby greatly improving purification efficiency. The design employing eccentric motion and cavity volume variation allows for the effective desorption and concentration of recyclable components in the waste gas on the surface of the molecular sieve plates. Through this recovery process, not only is the purification efficiency of the waste gas improved, but the effective recovery of valuable components from the waste gas is also achieved.

[0025] 2. In this invention, the eccentric movement of the cylinder liner ring causes volume changes in multiple cavities, creating a dynamic effect on exhaust gas flow. Airflow enters as the cavity volume increases; as the volume decreases, the airflow pressure increases, forcing the exhaust gas through the guide frame and molecular sieve plate. Because the low-speed, high-temperature airflow more effectively desorbs adsorbed harmful substances from the molecular sieve plate surface when passing through it, repeated passage through the molecular sieve plate not only improves the desorption effect but also enhances the recovery efficiency of recyclable components in the exhaust gas. Harmful components in the exhaust gas, after being desorbed on the surface of the molecular sieve plate, can be recycled again, improving resource recovery efficiency.

[0026] 3. In this invention, the eccentric motion of the cylinder liner ring drives the airflow to be split and repeatedly pass through the sliding guide frame and molecular sieve plate, enabling the equipment to operate continuously with low energy consumption and reducing downtime. Because the airflow can pass through the molecular sieve plate multiple times, the molecular sieve plate can maintain high purification efficiency for a longer period, extending the equipment's service life and reducing maintenance frequency. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present invention; Figure 2 This is an exploded structural diagram of an embodiment of the present invention; Figure 3 This is a schematic diagram of the internal structure of the circulation channel and the processing chamber according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the installation structure of the moving screen assembly according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the exhaust end cap and rotary valve core structure according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the main shaft assembly and exhaust end cover structure according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the moving screen assembly structure according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the one-way valve plate and molecular sieve plate structure according to an embodiment of the present invention.

[0028] Figure label: 100. Concentration treatment box; 110. Inlet end cap; 120. Exhaust end cap; 130. Clean gas outlet; 140. Waste gas inlet; 101. Circulation channel; 102. Treatment chamber; 103. Arc slide groove; 111. Clean gas inlet; 112. Gas heater; 121. Exhaust vent; 122. Rotary valve core; 123. Valve port; 141. Cooling box; 200. Main shaft assembly; 210. Shaft; 220. Crankshaft wheel; 230. Cylinder liner ring; 221. Pusher wheel; 300. Moving screen assembly; 310. Shaft pin; 320. Sliding guide frame; 330. Clock spring; 340. Molecular sieve plate; 311. Rotary ear plate; 321. One-way valve plate. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0030] It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the invention.

[0031] The following is in conjunction with the appendix Figures 1-8 This invention describes a rotary concentrator for exhaust gas from automotive body painting, provided by some embodiments thereof.

[0032] Implementation

[0033] The automobile body painting exhaust gas rotary concentrator includes a concentrator box 100, a main shaft assembly 200 and a moving screen assembly 300. The concentrator box 100 has an air inlet end cover 110 and an exhaust end cover 120 on both sides, and the concentrator box 100 has an aerodynamic channel 101 and a treatment chamber 102 inside. The aerodynamic channel 101 is sleeved around the outer periphery of the treatment chamber 102. The surface of the concentrator box 100 is fixedly connected to a clean gas outlet 130 and an exhaust gas inlet 140 that communicate with both ends of the aerodynamic channel 101. The moving screen assembly 300 includes a shaft pin 310, a sliding guide frame 320, and a spring 330 fixed to the surface of the concentration box 100. The shaft pin 310 is rotatably mounted on the inner side of the concentration box 100 and has a rotating ear plate 311 fixedly connected to the surface of the sliding guide frame 320 at one end. A one-way valve plate 321 and a molecular sieve plate 340 are snapped together on the inner side of the sliding guide frame 320. Several evenly distributed arc grooves 103 are provided on the inner side of the concentration box 100, and the sliding guide frame 320 is slidably mounted on the inner side of the arc grooves 103. One end of the shaft pin 310 is connected to the end of the spring 330.

[0034] The surface of the concentration treatment box 100 is provided with a clean gas inlet 111, and the surface of the exhaust end cover 120 is provided with a number of exhaust holes 121. A rotary valve core 122 is rotatably installed inside the exhaust end cover 120, and a valve port 123 is opened on the surface of the rotary valve core 122. The surface of the exhaust gas inlet 140 is provided with a cooling box 141 for cooling and introducing exhaust gas from automobile body painting. The exhaust gas inlet 140, the treatment chamber 102 and the clean gas outlet 130 form an exhaust gas passage, so that the exhaust gas passes through the surface of each molecular sieve plate 340 for adsorption and purification.

[0035] The rotary valve core 122 is fixedly connected to the end of the shaft 210 and rotates synchronously with the shaft 210. The outer wall of the rotary valve core 122 slides against the surface of the exhaust end cover 120 to seal the port of the exhaust through hole 121. The valve port 123 is located on the side offset from the center of the cylinder liner ring 230 to open the single exhaust through hole 121 and release gas. The clean gas inlet 111 has a built-in one-way intake valve for one-way input of clean gas, and a gas heater 112 is provided on its surface for heating the clean gas. The clean gas inlet 111 is connected to the interior of the treatment chamber 102 and an annular intake hole is provided at the connection.

[0036] Several sliding guide frames 320 are evenly distributed in the circumferential direction, and adjacent sliding guide frames 320 slide against the surface of the cylinder liner ring 230 to form independent cavities. Each independent cavity changes volume as the cylinder liner ring 230 swings eccentrically. The exhaust port 121 is connected to each independent cavity in a corresponding manner. The main shaft assembly 200 includes a shaft 210, a crank wheel 220, and a cylinder liner ring 230 rotatably sleeved on the outside of the crank wheel 220. The surface of the crank wheel 220 is provided with a stop wheel 221 that slides against the inside of the cylinder liner ring 230. The center of the cylinder liner ring 230 is offset from the axis of the shaft 210.

[0037] The outer periphery of the one-way valve plate 321 slides against the inner side of the arc sliding groove 103 and the two sides of the sliding guide frame 320 are connected to the inner side of the treatment chamber 102. It is used to guide the exhaust gas through the surface of the one-way valve plate 321 and the molecular sieve plate 340. The surface of the one-way valve plate 321 is provided with several valve controls and deflectable valve plates, which are used to guide the airflow unidirectionally from the exhaust gas inlet 140 to the clean gas outlet 130 inside the circulation channel 101. The spring 330 is in the shape of a planar helical spring, and its two ends are fixed to the inner side of the concentration treatment box 100 and the end of the shaft pin 310, respectively. It is used to drive the shaft pin 310 and the sliding guide frame 320 to deflect, so that one side of the sliding guide frame 320 always maintains elastic contact with the surface of the cylinder liner ring 230. The molecular sieve plate 340 is composed of multiple honeycomb structure units, which are used to effectively adsorb harmful substances in the exhaust gas.

[0038] This embodiment details the working principle, structure, and usage of a rotary concentrator for automotive body painting exhaust gas. The equipment includes a concentrator box 100, a main shaft assembly 200, and a moving screen assembly 300. These components work in concert to achieve efficient purification of exhaust gas and recovery of usable components.

[0039] The concentration treatment box 100 is a sealed shell structure, with an air inlet end cap 110 and an exhaust end cap 120 on its two sides, respectively. Inside the box, there is a treatment chamber 102 and a surrounding circulation channel 101, which form a ring-shaped arrangement and constitute the core space of the airflow treatment path.

[0040] The surface of the concentration treatment box is provided with: exhaust gas inlet 140: connected to the exhaust gas outlet of the external body painting process through the cooling box 141, used to introduce high-temperature exhaust gas; clean gas outlet 130: connected to the outlet of the circulation channel 101, to discharge the treated and purified gas. Clean gas inlet 111: Used to introduce high-temperature pure gas to complete molecular sieve regeneration. A one-way inlet valve and gas heater 112 are provided at the inlet to ensure unidirectional gas flow and heating. The exhaust end cover 120 has multiple exhaust holes 121 on its surface, with a rotary valve core 122 rotatably mounted inside. The valve core has a valve port 123 on its surface for controlling the gas discharge. The rotary valve core 122 is fixed to the end of the main shaft 210 and rotates synchronously with the shaft. The outer wall of the valve core maintains a sliding seal with the inner surface of the end cover, ensuring the exhaust holes are closed when not in use, thus preventing leakage. When the valve port 123 rotates to a certain hole position, the cavity is opened for exhaust.

[0041] The main shaft assembly 200 includes: a shaft 210, a crank wheel 220, and an externally eccentrically rotatable cylinder liner ring 230. The crank wheel 220 is fixedly installed in the middle of the shaft 210, and the cylinder liner ring 230 is eccentrically sleeved on the outside of the crank wheel 220, with its center offset from the axis of the shaft 210, forming an eccentric mechanism.

[0042] Driven by the motor, the shaft 210 drives the crank wheel 220 to rotate, which in turn causes the cylinder ring 230 to rotate eccentrically. The outer surface of the cylinder ring 230 forms sliding contact with multiple sliding guide frames 320 in the moving screen assembly, and drives the sliding guide frames to slide back and forth through its eccentric path.

[0043] The moving screen assembly 300 includes several sliding guide frames 320 symmetrically distributed in the circumferential direction. Each sliding guide frame is rotatably connected to the inner wall of the concentration treatment box 100 by a shaft pin 310, and is subjected to a rebound force by a spring 330 at one end, so that it always maintains elastic contact with the outer wall of the cylinder sleeve ring 230.

[0044] The sliding guide frame 320 slides along the inner arc sliding groove 103, and is fitted with: a one-way valve plate 321 to realize the directional flow of waste gas; and a molecular sieve plate 340 with a honeycomb structure to adsorb VOCs and other harmful substances in the waste gas.

[0045] The eccentric movement of the cylinder ring 230 forms multiple closed variable cavities. Each cavity is surrounded by adjacent sliding guide frames 320 and the cylinder ring 230. Its volume changes dynamically with the rotation of the cylinder ring, driving the airflow through the molecular sieve plate 340 to achieve adsorption-desorption cycle.

[0046] In this embodiment, the sliding guide frames 320 are evenly distributed in a circumferential direction, and adjacent sliding guide frames 320 slide against the surface of the cylinder liner ring 230 to form independent cavities. The cavities change volume as the cylinder liner ring 230 moves eccentrically. The exhaust port 121 is connected to each independent cavity in a corresponding manner to ensure sufficient purification and component recovery during the exhaust gas flow process.

[0047] Driven by the motor, the shaft 210 and crank wheel 220 rotate, which in turn drives the cylinder liner ring 230 to perform eccentric motion. The eccentric motion pushes the sliding guide frame 320 to reciprocate inside the arc sliding groove 103, so that the exhaust gas enters the circulation channel 101 after passing through the cooling box 141 and moves along the inner side of the circulation channel 101, and finally passes through multiple molecular sieve plates 340 for adsorption and purification. The purified exhaust gas is discharged through the clean gas outlet 130.

[0048] Furthermore, under the eccentric movement of the cylinder liner ring 230, multiple variable cavities are formed between the adjacent sliding guide frame 320 and the cylinder liner ring 230. The volume changes of these cavities cause the exhaust gas to undergo desorption and concentration treatment multiple times through the molecular sieve plate 340 under the action of the airflow. In this process, the low-speed, high-temperature airflow effectively desorbs the recyclable components adsorbed in the exhaust gas, and the recovered components are discharged through the rotary valve core 122.

[0049] The rotary valve core 122 is fixedly connected to the end of the shaft 210 and rotates synchronously with the shaft 210. The outer wall of the rotary valve core 122 slides against the surface of the exhaust end cover 120 to seal the exhaust port 121, ensuring no leakage of exhaust gas during treatment. When exhaust gas needs to be released, the position of the rotary valve core 122 is adjusted to open the valve port 123, allowing gas to be discharged from the exhaust port 121.

[0050] The surface of the one-way valve plate 321 is provided with several valve-controlled and deflectable valve plates, which can control the one-way flow of air according to the needs of airflow. When the exhaust gas flows through the circulation channel 101, it passes through the surfaces of the one-way valve plate 321 and the molecular sieve plate 340, effectively purifying and desorbing harmful components in the exhaust gas. The deflection of the valve plates enhances the flexibility and effectiveness of the exhaust gas flow.

[0051] The spring 330 is in the shape of a flat helical spring, with its two ends fixed to the inside of the concentration treatment box 100 and the end of the shaft pin 310, respectively, for driving the shaft pin 310 and the sliding guide frame 320 to deflect. The elastic force provided by the spring 330 ensures that the sliding guide frame 320 always maintains tight contact with the surface of the cylinder liner ring 230, thereby ensuring the continuous and efficient operation of the equipment during long-term operation.

[0052] The molecular sieve plate 340 is composed of multiple honeycomb structure units, which have a higher surface area and stronger adsorption capacity. It can effectively adsorb harmful substances in waste gas while maintaining good air permeability. This not only ensures the removal of harmful substances in waste gas but also keeps the purification effect stable, extending the service life of the equipment.

[0053] Implementation

[0054] Based on the first embodiment, this embodiment makes several improvements to the equipment, increases the adjustability of exhaust gas purification and desorption effects, and optimizes the airflow control system.

[0055] In this embodiment, an adjustable crankshaft wheel 220 is added to the main shaft assembly 200. By adjusting the eccentric motion amplitude of the crankshaft wheel 220, the eccentric motion range of the cylinder liner ring 230 can be changed, thereby optimizing the motion frequency and amplitude of the sliding guide frame 320 within the arc groove 103. This improvement allows the equipment to be flexibly adjusted according to different exhaust gas treatment requirements, thus improving exhaust gas treatment efficiency.

[0056] This embodiment improves the molecular sieve plate 340 in the moving sieve assembly 300 by using a more efficient adsorption material, enabling the molecular sieve plate 340 to adsorb more waste gas components. Furthermore, the one-way valve plate 321 is equipped with an adjustable valve plate, which can adjust the airflow channel according to changes in waste gas flow rate, improving the stability and flexibility of waste gas treatment.

[0057] This embodiment optimizes the structure of the exhaust gas inlet 140 and the treatment chamber 102, enabling the exhaust gas to be distributed more evenly upon entering the equipment and improving the contact efficiency between the exhaust gas and the molecular sieve plates 340. After passing through the cooling box 141, the exhaust gas can flow more evenly to each molecular sieve plate 340, ensuring that pollutants in the exhaust gas are fully adsorbed and removed.

[0058] This invention provides a high-efficiency rotary concentrator for exhaust gas from automotive body painting. Through its unique structural design and working principle, it effectively purifies exhaust gas and recovers usable components. By optimizing and improving various parts of the equipment, this invention not only enhances exhaust gas treatment efficiency but also allows for flexible adjustments to suit different working environments.

[0059] Working principle and usage process of this invention: Driven by the motor, the shaft 210 and crank wheel 220 rotate, which in turn drives the cylinder liner ring 230 to perform eccentric motion inside the treatment chamber 102. This eccentric motion drives the sliding guide frame 320 to reciprocate inside the corresponding arc groove 103, causing the sliding guide frame 320 to continuously reciprocate into the circulation channel 101 and the interior of the treatment chamber 102. This process allows the exhaust gas to be cooled by the cooling box 141, then enters the circulation channel 101 and moves along the inner side of the circulation channel 101. Finally, it is adsorbed by multiple molecular sieve plates 340, completing the purification of the exhaust gas. The purified exhaust gas is output through the clean gas outlet 130, and the recyclable components in the exhaust gas are retained on the surface of the molecular sieve plates 340.

[0060] Furthermore, during the eccentric movement of the cylinder ring 230, multiple variable cavities are formed between adjacent cylinder rings 230. As the cylinder ring 230 moves eccentrically, the volume of these cavities changes. When the volume increases, a low-speed airflow heated by the air heater 112 is introduced at one end of the intake port. Under the eccentric movement of the cylinder ring 230, this airflow compresses the volume of the variable cavities, thereby forcing the airflow through the one-way valve plate 321 and the molecular sieve plate 340. The high-temperature, low-speed airflow effectively desorbs recyclable components from the exhaust gas as it passes through the molecular sieve plate 340. This airflow is finally discharged through the open exhaust port 121 and valve port 123.

[0061] When shaft 210 rotates, rotary valve core 122 rotates synchronously. When cylinder ring 230 rotates, it compresses a certain cavity, increasing the internal airflow pressure. Part of the airflow moves through molecular sieve plate 340 to the lower cavity, while another part overflows through the open exhaust port 121 and valve port 123. Driven by cylinder ring 230, some airflow repeatedly passes through multiple molecular sieve plates 340 for desorption, thereby improving the desorption effect and effectively enhancing the concentration effect. Specifically, when the volume of the cavity between the sliding guide frames 320 increases, the low-speed, high-temperature airflow is introduced into the individual cavities inside the processing chamber 102 through the annular air inlet. Under the rotation of cylinder ring 230, some airflow moves through molecular sieve plate 340 to the lower cavity, while another part overflows through the open exhaust port 121 and valve port 123, thus achieving efficient desorption.

[0062] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0063] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A rotary concentrator for exhaust gas from automobile body painting, characterized in that, include: The concentrator has a concentration box (100), a main shaft assembly (200), and a moving screen assembly (300). The concentration box (100) is provided with an air inlet end cover (110) and an exhaust end cover (120) on both sides. The concentrator (100) has an inner circulation channel (101) and a processing chamber (102). The circulation channel (101) is sleeved around the outer periphery of the processing chamber (102). The surface of the concentration box (100) is fixedly connected with a clean gas outlet (130) and an exhaust gas inlet (140) that communicate with both ends of the circulation channel (101). The moving sieve assembly (300) includes a pivot pin (310), a sliding guide frame (320), and a spring (330) fixed to the surface of the concentration box (100). The pivot pin (310) is rotatably mounted on the inner side of the concentration box (100) and has a rotating ear plate (311) fixedly connected to the surface of the sliding guide frame (320) at one end. A one-way valve plate (321) and a molecular sieve plate (340) are snapped together on the inner side of the sliding guide frame (320). The inner side of the concentration box (100) is provided with several evenly distributed arc grooves (103), and the sliding guide frame (320) is slidably mounted on the inner side of the arc grooves (103). One end of the pivot pin (310) is connected to the spring. The end of the spring (330) is connected to the main shaft assembly (200), which includes a shaft (210), a crank wheel (220), and a cylinder ring (230) rotatably sleeved on the outside of the crank wheel (220). The surface of the crank wheel (220) is provided with a stop wheel (221) that slides against the inside of the cylinder ring (230). The center of the cylinder ring (230) is offset from the axis of the shaft (210). A plurality of sliding guide frames (320) are evenly distributed along the circumferential direction. An independent cavity is formed between two adjacent sliding guide frames (320) and the cylinder ring (230). The volume of each independent cavity changes with the eccentric movement of the cylinder ring (230). The surface of the concentration treatment box (100) is provided with a clean gas inlet (111), and the surface of the exhaust end cover (120) is provided with a number of exhaust through holes (121). A rotary valve core (122) is rotatably installed on the inner side of the exhaust end cover (120), and a valve port (123) is opened on the surface of the rotary valve core (122). The rotary valve core (122) is fixedly connected to the end of the shaft (210) and rotates synchronously with the shaft (210). The outer wall of the rotary valve core (122) slides against the surface of the exhaust end cover (120) to seal the port of the exhaust through hole (121). The valve port (123) is located on the side offset from the center of the cylinder liner ring (230) for opening a single exhaust through hole (121) to release gas. The exhaust through hole (121) is connected to each of the independent cavities one by one.

2. The automotive body painting exhaust gas rotary concentrator according to claim 1, characterized in that, The surface of the exhaust gas inlet (140) is provided with a cooling box (141), which is used to cool and introduce exhaust gas from automobile body painting. The exhaust gas inlet (140), the treatment chamber (102) and the clean gas outlet (130) form an exhaust gas passage, so that the exhaust gas passes through the surface of each molecular sieve plate (340) for adsorption and purification.

3. The automotive body painting exhaust gas rotary concentrator according to claim 1, characterized in that, The clean gas inlet (111) has a built-in one-way air inlet valve for one-way input of clean gas, and the surface of the clean gas inlet (111) is provided with a gas heater (112), which is used for heating the clean gas. The clean gas inlet (111) is connected to the interior of the processing chamber (102), and an annular air inlet hole is provided at the connection.

4. The automotive body painting exhaust gas rotary concentrator according to claim 1, characterized in that, The outer periphery of the one-way valve plate (321) slides against the inner side of the arc sliding groove (103), and the two sides of the sliding guide frame (320) are connected to the inner side of the treatment chamber (102) to guide the exhaust gas through the surface of the one-way valve plate (321) and the molecular sieve plate (340). The surface of the one-way valve plate (321) is provided with several valve controls and deflectable valve plates to allow the airflow to unidirectionally flow from the exhaust gas inlet (140) to the clean gas outlet (130) inside the circulation channel (101).

5. The automotive body painting exhaust gas rotary concentrator according to claim 1, characterized in that, The spring (330) is in the shape of a planar spiral spring, and the two ends of the spring (330) are respectively fixed to the inner side of the concentration treatment box (100) and the end of the shaft pin (310), which are used to drive the shaft pin (310) and the sliding guide frame (320) to deflect, so that one side of the sliding guide frame (320) always maintains elastic contact with the surface of the cylinder ring (230).

6. The automotive body painting exhaust gas rotary concentrator according to claim 1, characterized in that, The molecular sieve plate (340) is composed of multiple honeycomb structural units, which are used to effectively adsorb harmful substances in the exhaust gas.

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