Dry-type trolley structure for dry-type paint spraying chamber of coating line

Abstract

The invention relates to the technical field of coating equipment, and particularly discloses a dry-type trolley structure for a dry-type paint spraying chamber of a coating line, the dry-type trolley structure comprises a paint spraying chamber and a trolley body, the paint spraying chamber is divided into a spraying area, an adsorption area and a maintenance area from top to bottom, and a mounting pipeline in the adsorption area is used for placing a trolley. The trolley is composed of the driving module and the filtering module, the driving module can achieve transverse and longitudinal movement of the trolley, and replacement and maintenance of the filtering module are facilitated. The filtering module comprises a front coarse-efficiency layer and a rear high-efficiency layer, and paint mist can be effectively filtered. Sealing devices are arranged at the two ends of the mounting pipeline, and the connecting parts with the filtering modules adopt structures such as flanges and magnetic stickers to enhance sealing. In addition, movement of all parts of the trolley is achieved through cooperation of sliding rails and rollers, and equipment maintenance is facilitated through an access door. The paint mist filtering effect is improved, the filtering module is convenient to replace, the equipment sealing performance is enhanced, the maintenance cost is reduced, and the overall operation efficiency of a coating line is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of painting equipment, and particularly to a dry trolley structure for a dry spray booth in a painting line. Background Art

[0002] At present, with the booming development of the painting industry, dry spray booths have gradually occupied an important position in the market with their significant advantages such as environmental protection and energy conservation, and have become the mainstream choice to replace traditional wet spray booths. The core function of a dry spray booth is to effectively treat the paint mist generated during the painting process. As a key filtering device among them, the performance of the dry trolley directly affects the operation effect of the entire spray booth.

[0003] Many problems that urgently need to be solved have emerged in the actual application of existing dry trolleys. From the perspective of the filtering effect, there are defects in the filtering materials and structural designs adopted by some dry trolleys, making it difficult to efficiently capture tiny paint mist particles. For example, some dry trolleys rely only on simple filter meshes or a single filtering layer, and have a low filtering efficiency for paint mist particles with a particle size less than 10 microns, resulting in a large amount of paint mist escaping. This will not only impose a burden on the subsequent waste gas treatment system, but may also pollute the working environment, affect the physical health of operators, and at the same time reduce the surface quality of the sprayed workpieces, resulting in defects.

[0004] In terms of the replacement of the filtering module, the current dry trolleys generally face the dilemma of inconvenient operation. The connection methods between the filtering modules of many dry trolleys and the vehicle body are complex. When replacing, a variety of tools are often required, consuming a large amount of time and manpower. Taking the common bolt fixation method as an example, the staff needs to screw off the bolts one by one to disassemble the filtering module. After replacing the new module, the bolts need to be reinstalled and tightened again. The whole process is cumbersome and time-consuming. Moreover, in some cases, the filtering module needs to be replaced during downtime, which has a great impact on the continuous operation of the painting production line. According to statistics, the average downtime caused by each replacement of the filtering module can reach several hours, seriously reducing production efficiency and increasing production costs. For example, Chinese Patent CN218655166U discloses a new dry trolley structure applied to a dry spray booth in a painting line, belonging to the technical field of dry spray booths in painting lines. It includes a dry trolley body, the dry trolley body is arranged in a dry outer frame at the lower part of the spray booth, a slide rail is fixed on the inner wall of the top of the dry outer frame at the lower part of the spray booth, a pulley group is fixed at the top end of the dry trolley body, and the dry trolley body is slidably connected to the slide rail through the pulley group. The technical solution provided by this patent adopts an overall removal solution when maintaining the dry trolley, and requires downtime for maintenance, affecting work efficiency.

[0005] Therefore, an innovative dry trolley structure is needed to solve the above problems. Summary of the Invention

[0006] To solve the above problems, the present invention adopts the following technical solutions.

[0007] A dry trolley structure for a dry spray booth of a painting line, comprising A spray booth, comprising a spraying area, an adsorption area and a maintenance area arranged from top to bottom. The adsorption area includes a dry trolley installation area and a communication area. The communication area connects the spraying area and the trolley installation area. The trolley installation area includes a number of installation pipes arranged horizontally. One end of the installation pipe connected to the communication area is provided with a first closing device, and the other end of the installation pipe is provided with a second closing device. An exhaust mechanism is provided at one end of the adsorption area away from the communication area; A vehicle body, which is slidably arranged horizontally in the installation pipe. The vehicle body includes a driving module and a filtering module. The driving module includes a horizontal moving device and a longitudinal suspension mechanism. The longitudinal suspension mechanism is arranged at the bottom of the horizontal moving device, and the filtering module is arranged at the bottom of the longitudinal suspension mechanism. The horizontal moving device is used to drive the longitudinal suspension mechanism to move horizontally in the installation pipe. An inspection passage is provided between the maintenance area and the adsorption area. The longitudinal suspension mechanism drives the filtering module to move up and down, and an inspection door is provided at the inspection passage.

[0008] Preferably, the filtering module includes a front-stage coarse-effect layer and a rear-stage high-efficiency layer. The front-stage coarse-effect layer is a honeycomb dry filter paper box in a hexagonal array, and the rear-stage high-efficiency layer is a filter bag.

[0009] Preferably, the filtering module includes a housing. A mounting plate one is vertically arranged on one side of the housing facing the communication area. A number of jacks one arranged in a hexagonal array are provided on the mounting plate one. A mounting two is vertically arranged at the rear side of the mounting plate one. Jacks two corresponding to the jacks one are provided on the mounting two. Both ends of the dry filter paper box are respectively inserted into the jacks one and the jacks two. A mounting plate three is provided on the other side of the housing. A number of mounting holes are provided on the mounting plate three. The filter bag is installed on the mounting holes. An air guide pipe is provided between the mounting plate two and the mounting plate three. Both ends of the air guide pipe respectively cover the areas where a number of jacks two are located and the areas where a number of mounting holes are located.

[0010] Preferably, a stop edge is provided on the inner wall of one end of the installation pipe facing the communication area, and the outer side edge of one end of the housing facing the communication area is in contact with the stop edge.

[0011] Preferably, a closed magnetic sticker one and a magnetic sticker two are respectively provided on the opposite sides of the baffle and the outer side edge of one end of the housing facing the communication area, and the magnetic sticker one and the magnetic sticker two attract each other.

[0012] Preferably, an upper storage cavity and a lower storage cavity are respectively arranged on the upper surface and the lower bottom surface of the installation pipeline. The first closing device includes a first telescopic mechanism arranged inside the upper storage cavity. The extending end of the first telescopic mechanism is connected with a first cover plate through a rotating shaft. A groove is arranged at the bottom of the first cover plate. A second telescopic mechanism is arranged inside the lower storage cavity. A claw is arranged at the extending end of the telescopic mechanism. The second closing device includes a second cover plate. The side edge of the second cover plate is hinged to the installation pipeline. A third telescopic mechanism is rotatably arranged inside the upper installation cavity. The extending end of the third telescopic mechanism is rotatably connected with the top of the second cover plate. A fourth telescopic mechanism is rotatably arranged inside the lower installation cavity. The extending end of the fourth telescopic mechanism is rotatably connected with the bottom of the second cover plate.

[0013] Preferably, two first slide rails pointing to the communication area are arranged on the inner bottom surface of the upper installation cavity. A first slider is slidably arranged on the first slide rails. Connecting arms are arranged at both upper ends of the cover plate. The rotating shaft is arranged between the two connecting arms. The rotating shaft penetrates through the two first sliders. Sealing rings are arranged at the edge positions of the inner sides of the first cover plate and the second cover plate.

[0014] Preferably, a second slide rail parallel to the extending direction of the installation pipeline is horizontally arranged at the inner top of the installation pipeline. The transverse moving device includes a chassis. A first roller corresponding to the second slide rail is arranged at the side of the chassis. The first roller rolls on the second slide rail. A driving motor is further arranged on the chassis. The output end of the driving motor is connected with the middle part of one of the first rollers.

[0015] Preferably, a third slide rail parallel to the extending direction of the installation pipeline is horizontally arranged at the inner bottom of the installation track. A second roller corresponding to the third slide rail is arranged at the bottom of the filtering module. The second roller rolls on the third slide rail. The third slide rail includes fixed sections on both sides and a moving section. The moving section is arranged on the upper surface of the maintenance door. The two fixed sections are respectively arranged on both sides of the moving section and are aligned with the moving section. A locking device is arranged between the maintenance door and the installation pipeline.

[0016] Preferably, the longitudinal suspension mechanism includes a winding mechanism arranged at the bottom of the chassis. A plurality of guide rods are vertically arranged at the side of the chassis. A sleeve corresponding to the guide rods is arranged at the side of the filtering module. The guide rods slide inside the sleeves. The connecting belt wound on the winding mechanism is connected with the top of the filtering module. A limiting ring is arranged on the guide rods.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention adopts a filtering module structure combining a front pre-filter layer and a rear high-efficiency layer, which can effectively filter paint mist particles with different particle sizes, improve the filtering effect, and ensure that the discharged gas meets the environmental protection requirements. The honeycomb dry filter paper boxes in a hexagonal array increase the filtering area and make the air flow distribution more uniform, further improving the filtering efficiency.

[0018] The filtering module of the present invention can be lifted and moved through a longitudinal suspension mechanism. Cooperating with the lateral moving device, the filtering module can be conveniently removed from the installation pipeline for replacement or maintenance without shutting down the machine for complex operations, thus improving the production efficiency of the painting line.

[0019] Between the installation pipeline and the filtering module of the present invention, good sealing is achieved through structures such as edge guards, magnetic stickers, and sealing rings. The design of the closing device also enhances the sealing performance at both ends of the installation pipeline, effectively preventing paint mist leakage and protecting the working environment.

[0020] In the present invention, the provision of the maintenance passage and the maintenance door facilitates the maintenance and servicing by the staff. The design of the slide rail structure makes the movement of the filtering module and the trolley smoother, reducing the maintenance difficulty and cost. Brief Description of the Drawings

[0021] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the structure at the installation pipeline of the present invention; Figure 3 is a schematic diagram of the structure of the filtering module of the present invention; Figure 4 is a partial right view of the filtering module of the present invention; Figure 5 is a schematic diagram of the structure of the driving module of the present invention; Figure 6 is a top view of the lateral moving device of the present invention; Figure 7 is Figure 2 a partial schematic diagram at position A in Figure 8 is Figure 2 a partial schematic diagram at position B in Figure 9 is Figure 2 a partial schematic diagram at position C in

[0022] In the figure: 1, spray booth; 11, spraying area; 12, adsorption area; 121, dry trolley installation area; 122, connection area; 123, exhaust mechanism; 13, maintenance area; 131, inspection passage; 132, inspection door; 1321, locking device; 2, installation pipe; 21, first closing device; 22, second closing device; 23, edge stop; 24, magnetic tile 1; 25, upper storage cavity; 26, lower storage cavity; 27, slide rail 1; 28, slider 1; 29, sealing ring; 210, slide rail 2; 211, telescopic mechanism 1; 212, rotating shaft; 213, cover plate 1; 214, groove; 215, telescopic mechanism 2; 216, claw; 217, connecting arm; 221, cover plate 2; 222, telescopic mechanism 3; 223, telescopic mechanism 4; 3, drive module; 31, lateral moving device; 311, chassis; 312, roller 1; 313, drive motor; 32, longitudinal suspension mechanism; 321, winding mechanism; 322, guide rod; 323, connecting belt; 324, limit ring; 4, filtration module; 41, pre-filter coarse efficiency layer; 411, dry filter paper box; 42, post-filter high efficiency layer; 421, filter bag; 43, housing; 431, mounting plate 1; 4311, jack 1; 432, mounting plate 2; 4321, jack 2; 433, mounting plate 3; 4331, mounting hole; 434, air duct; 435, magnetic tile 2; 44, roller 2; 45, sleeve; 50, slide rail 3; 501, fixed section; 502, moving section. Detailed implementation manners

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and defined, terms such as "installation", "equipped with", "sheathed / connected", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Embodiment

[0026] As Figure 1-9 shown, in this embodiment, a dry trolley structure for a dry spray booth of a painting line includes a spray booth 1 and a vehicle body.

[0027] In this embodiment, the spray booth 1 is divided into a spraying area 11, an adsorption area 12, and a maintenance area 13 from top to bottom. The adsorption area 12 includes a dry trolley installation area 121 and a communication area 122. The communication area 122 connects the spraying area 11 and the trolley installation area 121. A number of horizontally arranged installation pipes 2 are provided in the trolley installation area 121. One end of the installation pipe 2 is connected to the communication area 122, and a first closing device 21 is provided at this end; the other end is provided with a second closing device 22. An exhaust mechanism 123 is installed at one end of the adsorption area 12 away from the communication area 122. In actual work, the spraying area 11 is used to spray paint on workpieces. The paint mist enters the communication area 122 along with the air flow, then enters the adsorption area 12 through the installation pipes 2, and after being filtered, it is discharged by the exhaust mechanism 123. The first closing device 21 and the second closing device 22 can be closed when needed. For example, when replacing the filter module or maintaining the installation pipes, it can prevent the paint mist from leaking. In this embodiment, the exhaust mechanism 123 is an exhaust fan.

[0028] In this embodiment, the vehicle body is slidably arranged transversely in the installation pipeline 2 and includes a driving module 3 and a filtering module 4. The driving module 3 includes a transverse moving device 31 and a longitudinal suspension mechanism 32. The longitudinal suspension mechanism 32 is installed at the bottom of the transverse moving device 31, and the filtering module 4 is arranged at the bottom of the longitudinal suspension mechanism 32. The transverse moving device 31 can drive the longitudinal suspension mechanism 32 to move transversely in the installation pipeline 2, facilitating the movement of the vehicle body between the working position and the maintenance position. The longitudinal suspension mechanism 32 can drive the filtering module 4 to move up and down, facilitating the replacement of the filtering module or the inspection and maintenance thereof. An inspection passage 131 is provided between the maintenance area 13 and the adsorption area 12, and an inspection door 132 is installed at the inspection passage 131. The inspection door 132 can ensure the sealing between the maintenance area 13 and the adsorption area 12 when no maintenance operation is carried out.

[0029] In this embodiment, the filtering module 4 is composed of a front-stage coarse-effect layer 41 and a rear-stage high-efficiency layer 42. The front-stage coarse-effect layer 41 adopts honeycomb-shaped dry filter paper boxes in a hexagonal array. This structure can increase the filtering area, improve the filtering efficiency, and make the air flow distribution more uniform. The rear-stage high-efficiency layer 42 is a filter bag, which can further filter tiny paint mist particles to ensure that the discharged gas meets the environmental protection standards. The filtering module 4 further includes a housing 43. A mounting plate one 431 is vertically arranged on one side of the housing 43 facing the communication area 122. There are a number of jacks one 4311 arranged in a hexagonal array on the mounting plate one 431 for installing the honeycomb-shaped dry filter paper boxes. A mounting plate two 432 is vertically arranged at the rear of the mounting plate one 431. Jacks two 4321 are arranged corresponding to the jacks one 4311 on the mounting plate two 432. The two ends of the dry filter paper box 411 are respectively inserted into the jacks one 4311 and the jacks two 4321 to ensure stable installation. A mounting plate three 433 is arranged on the other side of the housing 43. There are a number of mounting holes 4331 on the mounting plate three 433, and the filter bag 421 is installed on the mounting holes 4331. An air guide pipe 434 is arranged between the mounting plate two 432 and the mounting plate three 433. The two ends of the air guide pipe 434 respectively cover the areas where a number of jacks two 4321 are located and the areas where a number of mounting holes 4331 are located, enabling the gas filtered by the front-stage coarse-effect layer 41 to smoothly enter the rear-stage high-efficiency layer 42 for re-filtering.

[0030] In this embodiment, a retaining edge 23 is provided on the inner wall of one end of the installation pipe 2 facing the communication area 122, and the outer side edge of one end of the outer shell 43 facing the communication area 122 is in contact with the retaining edge 23, which plays a role in positioning and sealing. Closed magnetic tiles 24 and 435 are respectively provided on the opposite sides of the retaining edge 23 and the outer side edge of one end of the outer shell 43 facing the communication area 122. The magnetic tiles 24 and 435 attract each other, further enhancing the sealing performance between the installation pipe 2 and the filtering module 4 and preventing paint mist leakage.

[0031] In this embodiment, an upper storage cavity 25 and a lower storage cavity 26 are respectively provided on the upper surface and the lower bottom surface of the installation pipe 2. The first closing device 21 includes a first telescopic mechanism 211 disposed inside the upper storage cavity 25. The extending end of the first telescopic mechanism 211 is connected to a first cover plate 213 through a rotating shaft 212, and a groove 214 is provided at the bottom of the first cover plate 213. A second telescopic mechanism 215 is disposed in the lower storage cavity 26, and a claw 216 is provided at the extending end of the second telescopic mechanism 215. When it is necessary to close the connection between the installation pipe 2 and the communication area 122, first control the second telescopic mechanism 215 to extend, and then push out the first cover plate 213 by extending the first telescopic mechanism 211. The first cover plate 213 rotates around the rotating shaft 212 to cover the port of the installation pipe 2. Then control the second telescopic mechanism 215 to contract, and the claw 216 is caught in the groove 214 at the bottom of the first cover plate 213 to achieve fixation and sealing. The second closing device 22 includes a second cover plate 221, and the side of the second cover plate 221 is hinged to the installation pipe 2. A third telescopic mechanism 222 is rotatably disposed in the upper storage cavity 25, and the extending end of the third telescopic mechanism 222 is rotatably connected to the top of the second cover plate 221; a fourth telescopic mechanism 223 is rotatably disposed in the lower storage cavity 26, and the extending end of the fourth telescopic mechanism 223 is rotatably connected to the bottom of the second cover plate 221. By controlling the extension and contraction of the third telescopic mechanism 222 and the fourth telescopic mechanism 223, the opening and closing of the second cover plate 221 can be realized, and the other end of the installation pipe 2 can be closed and opened. Two first slide rails 27 pointing to the communication area 122 are provided on the inner bottom surface of the upper storage cavity 25, and a first slider 28 is slidably disposed on the first slide rails 27. Connecting arms 217 are provided on both sides of the upper end of the first cover plate 213, and the rotating shaft 212 is disposed between the two connecting arms 217 and penetrates through the two first sliders 28, such a structure makes the first cover plate 213 more stable during the opening and closing process. Sealing rings 29 are provided at the edge positions of the inner sides of the first cover plate 213 and the second cover plate 221 to further improve the sealing performance of the closing device. In this embodiment, the first telescopic mechanism 211, the second telescopic mechanism 215 and the third telescopic mechanism 222 are all electrically controlled telescopic rods, and the fourth telescopic mechanism 223 is a telescopic rod of general nature without self-contracting function. Partition plates are provided in the middle of the upper storage cavity 25 and the lower storage cavity 26, dividing the upper storage cavity 25 and the lower storage cavity 26 into front and rear sections.

[0032] In this embodiment, a second slide rail 210 parallel to the extending direction of the installation pipeline 2 is horizontally arranged at the inner top of the installation pipeline 2. The lateral moving device 31 of the driving module 3 includes a chassis 311. A first roller 312 is arranged on the side of the chassis 311 corresponding to the second slide rail 210, and the first roller 312 rolls on the second slide rail 210. A driving motor 313 is also arranged on the chassis 311, and the output end of the driving motor 313 is connected to the middle of one of the first rollers 312. After the driving motor 313 is started, it drives the first roller 312 to rotate, so that the chassis 311 moves laterally on the second slide rail 210, realizing the lateral displacement of the trolley in the installation pipeline 2.

[0033] In this embodiment, a third slide rail 50 parallel to the extending direction of the installation pipeline 2 is horizontally arranged at the inner bottom of the installation pipeline 2. A second roller 44 is arranged at the bottom of the filtering module 4 corresponding to the third slide rail 50, and the second roller 44 rolls on the third slide rail 50. The third slide rail 50 includes fixed sections 501 on both sides and a moving section 502. The moving section 502 is arranged on the upper surface of the inspection door 132, and the two fixed sections 501 are respectively arranged on both sides of the moving section 502 and are aligned with the moving section 502. When the inspection door 132 needs to be opened, the filtering module 4 can be first moved to the moving section 502, and then the locking device 1321 is unlocked to open the inspection door 132. At this time, the moving section 502 moves and opens along with the inspection door 132. A locking device 1321 is arranged between the inspection door 132 and the installation pipeline 2 to ensure the sealing performance and stability when the inspection door 132 is closed. In this embodiment, the locking device 1321 is a bolt structure and is unlocked manually.

[0034] In this embodiment, the longitudinal suspension mechanism 32 of the driving module 3 includes a winding mechanism 321 arranged at the bottom of the chassis 311. A plurality of guide rods 322 are vertically arranged on the side of the chassis 311. A sleeve 45 is arranged on the side of the filtering module 4 corresponding to the guide rods 322, and the guide rods 322 slide in the sleeve 45. A connecting belt 323 is wound on the winding mechanism 321, and the connecting belt 323 is connected to the top of the filtering module 4. When the winding mechanism 321 works, the lifting movement of the filtering module 4 can be realized by winding and unwinding the connecting belt 323. A limit ring 324 is arranged on the guide rods 322 to limit the lifting height of the filtering module 4 and prevent it from rising excessively.

[0035] The working principle of the above technical solution is: During use, when the spray booth starts working, keep the cover plate 1 and the cover plate 2 in the open state. The spraying area 11 performs the spraying operation, and the exhaust mechanism 123 is opened. The paint mist enters the communication area 122 along with the air flow, and then enters the adsorption area 12 through the installation pipe 2. In the adsorption area 12, the paint mist first passes through the pre-filter coarse layer 41 of the filter module 4 for preliminary filtration to remove the paint mist with larger particles, and then passes through the post-filter high-efficiency layer 42 for further filtration of fine particles. The filtered gas is discharged by the exhaust mechanism 123. During the working process, the driving module 3 needs to drive the trolley to move horizontally in the installation pipe 2 so that the baffle 23 and the outer side edge of one end of the housing 43 of the filter module 4 facing the communication area 122 are mutually attached to ensure the sealing performance.

[0036] When it is necessary to replace the filter module 4, ensure that the cover plate 1 and the cover plate 2 at both ends of the installation pipe where the corresponding filter module 4 is located are in the closed state. Then, move the trolley to the position corresponding to the maintenance passage 131 through the horizontal moving device 31 of the driving module 3, and then start the winding mechanism 321 of the longitudinal suspension mechanism 32 to lift the filter module 4. When the filter module 4 is slightly lifted to a certain height, open the maintenance door 132. At this time, continue to lower the filter module 4 through the longitudinal suspension mechanism 32 to remove it from the installation pipe 2. After replacing the new filter module 4, install it back to the original position according to the reverse steps, close the maintenance door 132, and fix it through the locking device 1321 to ensure the sealing performance. During the replacement process, pay attention to avoiding collision with other parts of the equipment to ensure the operation safety. The above is only the preferred specific implementation manner of the present invention; however, the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its improvement concept, makes equivalent substitution or change, and should be covered by the protection scope of the present invention.

Claims

1. A dry trolley structure for a dry spray booth of a painting line, characterized in that Comprising: A spray booth (1), including a spraying area (11), an adsorption area (12), and a maintenance area (13) arranged from top to bottom. The adsorption area (12) includes a dry trolley installation area (121) and a communication area (122). The communication area (122) connects the spraying area (11) and the trolley installation area (121). The trolley installation area (121) includes a number of installation pipes (2) arranged horizontally. One end of the installation pipe (2) connected to the communication area (122) is provided with a first closing device (21), and the other end of the installation pipe (2) is provided with a second closing device (22). An exhaust mechanism (123) is provided at one end of the adsorption area (12) away from the communication area (122). A vehicle body, horizontally slidably arranged in the installation pipe (2). The vehicle body includes a driving module (3) and a filtering module (4). The driving module (3) includes a horizontal moving device (31) and a longitudinal suspension mechanism (32). The longitudinal suspension mechanism (32) is arranged at the bottom of the horizontal moving device (31), and the filtering module (4) is arranged at the bottom of the longitudinal suspension mechanism (32). The horizontal moving device (31) is used to drive the longitudinal suspension mechanism (32) to move horizontally in the installation pipe (2). An inspection passage (131) is arranged between the maintenance area (13) and the adsorption area (12). The longitudinal suspension mechanism (32) drives the filtering module (4) to move up and down. An inspection door (132) is arranged at the inspection passage (131).

2. The dry trolley structure for a dry spray booth of a painting line according to claim 1, wherein: The filtering module (4) includes a front pre-filter layer (41) and a rear high-efficiency layer (42). The front pre-filter layer (41) is a honeycomb dry filter paper box in a hexagonal array, and the rear high-efficiency layer (42) is a filter bag.

3. The dry trolley structure for a dry spray booth of a painting line according to claim 2, characterized in that: The filtering module (4) includes a housing (43). A first mounting plate (431) is vertically arranged on one side of the housing (43) facing the communication area (122). A number of jacks one (4311) arranged in a hexagonal array are provided on the first mounting plate (431). A second mounting plate (432) is vertically arranged at the rear of the first mounting plate (431). Jacks two (4321) corresponding to the jacks one (4311) are provided on the second mounting plate (432). Both ends of the dry filter paper box (411) are respectively inserted into the jacks one (4311) and the jacks two (4321). A third mounting plate (433) is arranged on the other side of the housing (43). A number of mounting holes (4331) are provided on the third mounting plate (433). The filter bag (421) is installed on the mounting holes (4331). An air guiding pipe (434) is arranged between the second mounting plate (432) and the third mounting plate (433). Both ends of the air guiding pipe (434) respectively cover the areas where a number of jacks two (4321) are located and the areas where a number of mounting holes (4331) are located.

4. The dry trolley structure for a dry spray booth of a painting line according to claim 3, wherein: A baffle (23) is arranged on the inner wall of one end of the installation pipe (2) facing the communication area (122). The outer side edge of one end of the housing (43) facing the communication area (122) is in contact with the baffle (23).

5. The dry trolley structure for a dry spray booth of a painting line according to claim 4, characterized in that: On the outer sides of the side edges facing each other at one ends of the retaining edge (23) and the outer shell (43) towards the communication area (122), a closed magnetic tile one (24) and a magnetic tile two (435) are respectively arranged, and the magnetic tile one (24) and the magnetic tile two (435) attract each other.

6. The dry trolley structure for a dry spray booth of a painting line according to claim 1, characterized in that: On the upper surface and the lower bottom surface of the installation pipeline (2), an upper storage cavity (25) and a lower storage cavity (26) are respectively arranged. The first closing device (21) includes a telescopic mechanism one (211) arranged inside the upper storage cavity (25). The extending end of the telescopic mechanism one (211) is connected with a cover plate one (213) through a rotating shaft (212). A groove (214) is arranged at the bottom of the cover plate one (213). A telescopic mechanism two (215) is arranged in the lower storage cavity (26). A claw (216) is arranged at the extending end of the telescopic mechanism two (215). The second closing device (22) includes a cover plate two (221). The side edge of the cover plate two (221) is hinged with the installation pipeline (2). A telescopic mechanism three (222) is rotatably arranged in the upper storage cavity (25). The extending end of the telescopic mechanism three (222) is rotatably connected with the top of the cover plate two (221). A telescopic mechanism four (223) is rotatably arranged in the lower storage cavity (26). The extending end of the telescopic mechanism four (223) is rotatably connected with the bottom of the cover plate two (221).

7. The dry trolley structure for a dry spray booth of a painting line according to claim 6, wherein: On the inner bottom surface of the upper storage cavity (25), two slide rails one (27) pointing to the communication area (122) are arranged. A slide block one (28) is slidably arranged on the slide rails one (27). Connecting arms (217) are arranged at both upper ends of the cover plate one (213). The rotating shaft (212) is arranged between the two connecting arms (217). The rotating shaft (212) penetrates through the two slide blocks one (28). Sealing rings (29) are arranged at the edge positions of the inner sides of the cover plate one (213) and the cover plate two (221).

8. The dry trolley structure for a dry spray booth of a painting line according to claim 1, characterized in that: On the inner top of the installation pipeline (2), a slide rail two (210) parallel to the extending direction of the installation pipeline (2) is horizontally arranged. The transverse moving device (31) includes a chassis (311). A roller one (312) corresponding to the slide rail two (210) is arranged at the side part of the chassis (311). The roller one (312) rolls on the slide rail two (210). A driving motor (313) is also arranged on the chassis (311). The output end of the driving motor (313) is connected with the middle part of one of the rollers one (312).

9. The dry trolley structure for a dry spray booth of a painting line according to claim 8, characterized in that: On the inner bottom of the installation pipeline (2), a slide rail three (50) parallel to the extending direction of the installation pipeline (2) is horizontally arranged. A roller two (44) corresponding to the slide rail three (50) is arranged at the bottom of the filtering module (4). The roller two (44) rolls on the slide rail three (50). The slide rail three (50) includes fixed sections (501) on both sides and a moving section (502). The moving section (502) is arranged on the upper surface of the inspection door (132). The two fixed sections (501) are respectively arranged on both sides of the moving section (502) and are aligned with the moving section (502). A locking device (1321) is arranged between the inspection door (132) and the installation pipeline (2).

10. A dry trolley structure for a dry spray booth of a painting line, characterized in that: The longitudinal suspension mechanism (32) includes a winding mechanism (321) disposed at the bottom of the chassis (311). A plurality of guide rods (322) are vertically disposed on the side of the chassis (311). A sleeve (45) is disposed on the side of the filter module (4) corresponding to the guide rods (322). The guide rods (322) slide within the sleeve (45). A connecting belt (323) wound on the winding mechanism (321) is connected to the top of the filter module (4). A limit ring (324) is disposed on the guide rods (322).

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