Efficient gas cylinder cleaning and drying integrated device
By designing an integrated device for efficient cleaning and drying of gas cylinders, the problem of dirt and grease obscuring markings on the outer wall of gas cylinders has been solved, achieving all-round cleaning and drying, improving the recognizability of markings and reducing the intensity of manual labor.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-14
- Publication Date
- 2026-04-07
AI Technical Summary
The outer walls of existing gas cylinders accumulate dirt and grease due to long-term exposure to the environment, causing the markings to be obscured. Manual cleaning is labor-intensive and incomplete.
A high-efficiency integrated cleaning and drying device for gas cylinders was designed, including a conveyor track, a conveyor belt, a lifting mechanism, a cleaning component, and a drying mechanism. The gas cylinders are conveyed by the conveyor belt, rotated by the lifting mechanism, and sprayed by the cleaning component. The drying mechanism then dries them by blowing air.
It achieves comprehensive cleaning and drying of the outer wall of the gas cylinder, avoids cleaning dead spots, improves the recognizability of the marking information, and reduces the intensity of manual labor.
Smart Images

Figure CN224087536U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a gas cylinder technical field, especially relate to a gas cylinder high -efficient cleaning and drying integration device. BACKGROUND
[0002] The existing gas cylinder is in the exposed environment for a long time, and dirt, grease and other impurities will accumulate on the outer wall, which will shield the original identification information of the bottle body and affect the recognition degree. The existing gas cylinder outer wall cleaning is usually cleaned by manual, which not only has high labor intensity, but also has the problem of incomplete cleaning.
[0003] Therefore, the gas cylinder high -efficient cleaning and drying integration device is provided to meet the needs. UTILITY MODEL CONTENTS
[0004] The purpose of the present application is to provide a kind of gas cylinder high -efficient cleaning and drying integration device, it aims at solving the problem that gas cylinder is in the exposed environment for a long time, and dirt, grease and other impurities will accumulate on the outer wall, which will shield the original identification information of the bottle body and affect the recognition degree.
[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a kind of gas cylinder high -efficient cleaning and drying integration device, including integrated box, conveying track and conveying belt, conveying track is equipped with conveying belt, conveying belt is driven by motor, the outer wall of integrated box is equipped with hole intercommunicating before and after, and integrated box is divided into two groups of space before and after, a group of conveying tracks is arranged in the bottom of integrated box, characterized by: top surface of conveying belt is equipped with placing seat, the inner wall of placing seat is equipped with slot, limit block is hinged in slot, torsional spring is arranged at the hinge of limit block, and gas cylinder is inserted on placing seat;
[0006] A cleaning assembly is arranged in the front space of the integrated box. To cooperate with the cleaning assembly, a water tank is arranged on the top surface of the integrated box. The water tank is provided with a water pump. The water pump is inserted into the front space through a water pipe, and a spray head is arranged at the end of the water pipe.
[0007] A hoisting mechanism for lifting the gas cylinder is arranged on the top of the front space, and a drying mechanism for cleaning the outer wall of the gas cylinder is arranged in the rear space.
[0008] Preferably, the cleaning assembly includes a cleaning bin, a cleaning roller, a cleaning motor and a second push cylinder. The second push cylinder is arranged on the inner wall of the front space. Two second push cylinders are arranged in one group and symmetrically arranged on the left and right sides. The cleaning bin is arranged at the telescopic end of the second push cylinder. The opposite surface of the cleaning bin is provided with a slot. The cleaning roller is rotatably connected in the slot. The cleaning motor is arranged at the bottom of the cleaning bin to drive the cleaning roller to rotate.
[0009] Preferably, the lifting mechanism comprises a first push cylinder, a connecting column, a rotating mechanism, a driving gear, a driven gear, a clamping cover, an extension block and a slide column, the first push cylinder is arranged on the integrated box, a connecting column is rotatably connected to the extension end of the first push cylinder, the outer wall of the connecting column is provided with the rotating mechanism, the bottom surface of the connecting column is provided with the clamping cover, a second bottom plate is arranged below the rotating mechanism, the top surface of the second bottom plate is provided with a clamping motor, the driving shaft of the clamping motor penetrates through the second bottom plate, a driving gear is arranged on the driving shaft of the clamping motor, an extension hole is arranged in the outer wall of the clamping cover and communicates with the inside, the extension hole is of a rectangular structure, an extension block is slidably connected in the extension hole, the top surface of the extension block is provided with a slide column, and a set of driven gears are rotatably connected to the outer wall of the clamping cover, the driven gears are meshed with each other between the driving gear, and a slide way is arranged on the driven gear and used for sliding the slide column, and the slide way is of an arc structure.
[0010] Preferably, the rotating mechanism comprises a first bottom plate, a driven synchronous wheel, a driving synchronous wheel, a synchronous belt and a gas cylinder rotating motor, the extension end of the first push cylinder is provided with an L-shaped connecting piece, the bottom of the connecting piece is provided with the first bottom plate, the connecting column is slidably connected to the first bottom plate, the connecting column is provided with the driven synchronous wheel which is coaxial with the connecting column, the driving synchronous wheel is rotatably connected to the first bottom plate, the middle part of the driving synchronous wheel is provided with a polygonal hole, a groove is arranged on the integrated box, the gas cylinder rotating motor is arranged in the groove, the driving shaft of the gas cylinder rotating motor is matched with the polygonal hole, a hole corresponding to the polygonal hole is arranged on the first bottom plate, and the driving synchronous wheel and the driven synchronous wheel are connected through the synchronous belt.
[0011] Preferably, the drying mechanism comprises a fan, a wind pipe, a lifting screw, a positioning rod, a lifting motor, a blowing piece and a secondary lug, the inner wall of the rear space is provided with a mounting plate, the mounting plates are symmetrically arranged on the left and right, the lifting screw and the positioning rod are rotatably connected to the mounting plates respectively, the lifting screw is driven by the lifting motor, a set of annular blowing pieces are arranged between the lifting screw and the positioning rod, the top surface of the blowing piece is provided with an air duct, the inner wall of the air duct is provided with an air outlet which communicates with the outside, a cover plate is arranged on the top surface of the blowing piece, two groups of symmetrical secondary lugs are arranged on the outer wall of the blowing piece, the two groups of secondary lugs are threadedly connected to the lifting screw and the positioning rod respectively, the cover plate is provided with an air inlet hole which communicates with the air duct, and the air inlet hole is connected to the fan arranged on the top of the integrated box through the wind pipe.
[0012] In conclusion, the technical effects and advantages of the utility model are as follows:
[0013] According to the utility model, the conveying belt and the placing seat are designed, so that the staff can directly place the gas cylinder to be cleaned on the placing seat and directly move the gas cylinder to the integrated box for cleaning under the driving of the conveying belt.
[0014] The utility model discloses, through the lifting mechanism cooperation and cleaning assembly, water pump, water tank, shower head that are equipped in the integral box, the gas cylinder is lifted to the front space, avoids in the process of cleaning, because the gas cylinder is inserted in the placing seat, appears the cleaning dead angle, and through the rotating mechanism in the lifting mechanism, the gas cylinder can swing left and right, to ensure that the outer wall of gas cylinder is washed evenly, avoids the emergence of cleaning dead angle.
[0015] The utility model discloses, through the drying mechanism that is equipped in the rear space, after completing the cleaning task, the reciprocating motion of the lifting of the blower piece removes the water mark etc. that is attached on the outer wall of gas cylinder, ensures the cleanliness of the outer wall of gas cylinder. DRAWINGS
[0016] In order to more clearly illustrate the technical scheme in the embodiment of the present application or prior art, the following will be briefly introduced the drawing needed to be used in the embodiment or prior art description, obviously, the drawing in the following description is only some embodiments of the present application, for those skilled in the art, under the premise of not paying creative labor, still can obtain other drawings according to these drawings.
[0017] Figure 1 It is the structure schematic drawing of the utility model;
[0018] Figure 2 It is the local section structure schematic drawing of the utility model Figure One ;
[0019] Figure 3 It is the placing seat structure schematic drawing of the utility model;
[0020] Figure 4 It is the cleaning storehouse structure schematic drawing of the utility model;
[0021] Figure 5 It is the lifting mechanism structure schematic drawing of the utility model;
[0022] Figure 6 It is the lifting mechanism section structure schematic drawing of the utility model;
[0023] Figure 7 It is the clamping cover structure schematic drawing of the utility model;
[0024] Figure 8 It is the local section structure schematic drawing of the utility model Figure Two ;
[0025] Figure 9 It is the blower piece structure schematic drawing of the utility model.
[0026] As shown in the figure: 1, conveying track; 2, conveying belt; 3, placing seat; 4, integrated box; 5, water pipe; 6, water tank; 7, No. 1 push cylinder; 8, connecting column; 9, No. 1 bottom plate; 10, driven synchronous wheel; 11, driving synchronous wheel; 12, synchronous belt; 13, gas cylinder rotation motor; 14, No. 2 bottom plate; 15, clamping motor; 16, driving gear; 17, driven gear; 170, slide; 18, clamping cover; 180, telescopic hole; 19, telescopic block; 20, slide column; 21, cleaning bin; 22, cleaning roller; 23, cleaning motor; 24, No. 2 push cylinder; 25, fan; 26, air pipe; 27, lifting screw; 28, positioning rod; 29, lifting motor; 30, blowing piece; 300, air duct; 301, air outlet; 31, auxiliary ear; 32, cover plate. DETAILED DESCRIPTION
[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0028] Embodiment: refer to Figures 1-9 As shown in the figure, an efficient gas cylinder cleaning and drying integrated device comprises an integrated box 4, a conveying track 1, a lifting mechanism, a cleaning assembly, and a drying mechanism. A passageway is arranged on the integrated box 4 and communicates between front and back, and two groups of spaces are arranged inside the integrated box 4. A lifting mechanism for lifting the gas cylinder and a cleaning assembly for cleaning the outer wall of the gas cylinder are arranged in the front space. A water tank 6 is arranged on the integrated box 4, and a water pump is arranged in the water tank 6. The water outlet of the water pump is connected with a water pipe 5, the water pipe 5 is inserted into the front space, and a spray head is arranged at the free end of the water pipe 5. The gas cylinder is cleaned by the cleaning assembly. After cleaning, the gas cylinder is transported to the rear space by the conveying track 1, the conveying belt 2, and the placing seat 3 (as shown in the figure) arranged below the integrated box 4, and the outer wall of the gas cylinder is treated by the drying mechanism. Figure 1 As shown in the figure, an efficient gas cylinder cleaning and drying integrated device comprises an integrated box 4, a conveying track 1, a lifting mechanism, a cleaning assembly, and a drying mechanism. A passageway is arranged on the integrated box 4 and communicates between front and back, and two groups of spaces are arranged inside the integrated box 4. A lifting mechanism for lifting the gas cylinder and a cleaning assembly for cleaning the outer wall of the gas cylinder are arranged in the front space. A water tank 6 is arranged on the integrated box 4, and a water pump is arranged in the water tank 6. The water outlet of the water pump is connected with a water pipe 5, the water pipe 5 is inserted into the front space, and a spray head is arranged at the free end of the water pipe 5. The gas cylinder is cleaned by the cleaning assembly. After cleaning, the gas cylinder is transported to the rear space by the conveying track 1, the conveying belt 2, and the placing seat 3 (as shown in the figure) arranged below the integrated box 4, and the outer wall of the gas cylinder is treated by the drying mechanism.
[0029] As an embodiment in the present embodiment, the conveying track 1 is in U-shaped structure, and a group of conveying belts 2 are arranged in the conveying track 1. The conveying belts 2 are driven by a motor, and a plurality of placing seats 3 are arranged on the conveying belts 2. A slot is arranged on the inner wall of the placing seat 3, and a limiting block is hinged in the slot. A torsion spring is arranged at the hinge of the limiting block. After the gas cylinder is placed in the placing seat 3, the gas cylinder is centered, corrected, and limited by the limiting block.
[0030] As an embodiment in this embodiment, the lifting mechanism: a hole is arranged in the middle of the inner top surface of the front space, a set of No. 1 push cylinder 7 is arranged in the hole, the bottom surface of the telescopic end of the No. 1 push cylinder 7 is rotatably connected with a set of connecting columns 8, in order to drive the rotation of the connecting columns 8, a rotating mechanism is arranged on the telescopic end of the No. 1 push cylinder 7, and the connecting columns 8 in the rotating mechanism hole rotate; a No. 2 bottom plate 14 is arranged on the outer wall of the connecting column 8, a set of clamping motors 15 is arranged on the No. 2 bottom plate 14, a set of drive gears 16 is arranged on the drive shaft of the clamping motor 15 (and the drive gears 16 are located below the No. 2 bottom plate 14), a clamping cover 18 connected with the connecting column 8 is arranged at the bottom of the connecting column 8, a telescopic hole 180 is arranged on the inner wall of the clamping cover 18, a telescopic block 19 capable of limiting the head of the gas cylinder is slidably connected in the telescopic hole 180, a sliding column 20 is arranged on the top surface of the telescopic block 19 (located outside the clamping cover 18), a set of rotatably connected driven gears 17 is arranged on the outer wall of the clamping cover 18, the driven gears 17 are meshed with the drive gears 16, a plurality of arc-shaped slideways 170 are arranged on the driven gears 17, and the sliding column 20 is slidably connected in the slideways 170. Therefore, when the clamping motor 15 works, the telescopic block 19 will perform telescopic movement to clamp the end of the gas cylinder.
[0031] As an embodiment in this embodiment, the rotating mechanism: the No. 1 bottom plate 9 is connected with the No. 1 push cylinder 7 through the L-shaped connecting piece arranged on the outer wall of the No. 1 push cylinder 7, and the No. 1 bottom plate 9 follows the lifting of the No. 1 push cylinder 7 during the telescopic movement of the telescopic end of the No. 1 push cylinder 7. Therefore, in order to keep the gas cylinder rotating motor 13 still capable of driving the drive synchronous wheel 11 to rotate on the No. 1 bottom plate 9, a plurality of side holes are arranged in the middle of the drive synchronous wheel 11, the side holes are hexagonal, and the telescopic end of the gas cylinder rotating motor 13 is a multi-sided column, so as to ensure that the No. 1 bottom plate 9 still does not affect the rotation of the drive synchronous wheel 11 driven by the gas cylinder rotating motor 13 during the lifting of the No. 1 bottom plate 9. A driven synchronous wheel 10 coaxial with the connecting column 8 is arranged on the connecting column 8, the driven synchronous wheel 10 is connected with the drive synchronous wheel 11 through a synchronous belt 12, and the connecting column 8 drives the gas cylinder to reciprocate under the transmission of the above structure when the gas cylinder rotating motor 13 on the start-up integrated box 4 is started.
[0032] As an embodiment in this embodiment, the cleaning assembly: after the gas cylinder is lifted by the above lifting mechanism, a No. 2 push cylinder 24 arranged on the inner wall of the front space is started to work (the two No. 2 push cylinders 24 are a set and symmetrically arranged left and right), a set of cleaning bins 21 is arranged on the telescopic end of the No. 2 push cylinder 24, grooves are arranged on the opposite surfaces of the cleaning bins 21, cleaning rollers 22 rotatably connected in the grooves are driven by cleaning motors 23, and the above spray heads are matched to clean the outer wall of the gas cylinder.
[0033] As an embodiment in this embodiment, after the above operation is completed, the gas cylinder is placed back into the placement seat 3 and then continuously transported to the rear space.
[0034] As an embodiment in the embodiment, the drying mechanism: through the mounting plate provided on the inner wall of the rear space, the mounting plate is two for a group, and two groups are symmetrically arranged, the lifting screw 27 and the positioning rod 28 are rotatably connected on the two groups of mounting plates respectively; the annular blowing piece 30 located between the lifting screw 27 and the positioning rod 28 is provided with two groups of left-right symmetrical auxiliary ears 31 on the outer wall of the blowing piece 30, one group of auxiliary ears 31 is threadedly connected on the lifting screw 27, and the other group of auxiliary ears 31 is slidably connected on the positioning rod 28, so that when the lifting screw 27 is driven to rotate by the lifting motor 29 on the mounting plate, the blowing piece 30 can move up and down in the rear space, and the top surface of the blowing piece 30 is provided with an annular air duct 300, and the air outlet 301 communicating with the air duct 300 is arranged on the inner wall of the blowing piece 30, the cover plate 32 is arranged on the top surface of the blowing piece 30, the cover plate 32 is provided with an air inlet, and the fan 25 arranged on the top of the integrated box 4 is connected with the air inlet through the air pipe 26, so that when the fan 25 works, the gas is discharged from the air outlet 301 to blow the outer wall of the gas cylinder at multiple angles, and the drying treatment is completed.
[0035] The utility model works as follows: after the gas cylinder is placed in the placing seat 3, it is centrally positioned under the design of the limiting block, then the motor on the conveying track 1 is started, the motor drives the conveying belt 2 to run on the conveying track 1, then the gas cylinder is conveyed into the front space of the integrated box 4, then the first push cylinder 7 is started, the telescopic end of the first push cylinder 7 is telescopic, the connecting column 8 is lowered, the head of the gas cylinder is covered by the clamping cover 18, then the clamping motor 15 on the second bottom plate 14 is started again, the clamping motor 15 drives the driving gear 16 to rotate, the rotating driving gear 16 drives the driven gear 17 meshing therewith to rotate on the clamping cover 18, the slide 170 on the driven gear 17 drives the slide column 20 to move, the telescopic block 19 slides in the telescopic hole 180, and the inner end of the telescopic block 19 abuts against the head of the gas cylinder, then the first push cylinder 7 is started again, the first push cylinder 7 is retracted, the gas cylinder is pulled up, the gas cylinder rotating motor 13 in the integrated box 4 is started, the gas cylinder rotating motor 13 drives the driving synchronous wheel 11 on the first bottom plate 9 to rotate (the first bottom plate 9 is fixed on the telescopic end of the first push cylinder 7 through the L-shaped connecting piece), the driven synchronous wheel 10 is driven to rotate through the synchronous belt 12, the driven synchronous wheel 10 is coaxially arranged with the connecting column 8, so that the connecting column 8 rotates with the driven synchronous wheel 10, and the purpose of driving the gas cylinder to rotate reciprocatingly is achieved.
[0036] Afterwards, the second push cylinder 24 works, pushes the cleaning bin 21 to the middle, and then starts the cleaning motor 23 at the bottom of the cleaning bin 21. The cleaning motor 23 drives the cleaning roller 22 to rotate in the cleaning bin 21. The brush on the cleaning roller 22 cleans the outer wall of the gas cylinder. During the process, the water pump in the water tank 6 works simultaneously, and water is sprayed from the nozzle through the water pipe 5 to moisten the outer wall of the gas cylinder. After cleaning, the above-mentioned mechanism is operated in reverse to put the gas cylinder back into the placing seat 3.
[0037] After the above operation is completed, the conveyor belt 2 continues to convey and sends the gas cylinder to the rear space. Then, the lifting motor 29 on the mounting plate is started, the lifting motor 29 drives the lifting screw 27 to rotate, under the cooperation of the positioning rod 28, the blowing piece 30 is driven to move up and down through the two groups of auxiliary ears 31. During the process, the fan 25 works, the fan 25 sends the air to the air duct 300 through the air pipe 26, and discharges from the air outlet 301 to dry the gas cylinder.
[0038] The mechanical and electrical connection disclosed in the utility model is a common means adopted by those skilled in the art, and can be inspired by limited tests, and belongs to the public knowledge.
[0039] The components not described in detail in the present application are prior art.
[0040] Finally, it should be pointed out that: the above only for the preferred embodiments of the utility model, and does not limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can modify the technical scheme recorded in the foregoing embodiments, or equivalent replacement to part of technical features, any modification, equivalent replacement, improvement etc. within the spirit and principles of the utility model, should be included in the protection scope of the utility model.
Claims
1. A gas cylinder high-efficiency cleaning and drying integrated device, comprising an integrated box (4), a conveyor track (1), and a conveyor belt (2), wherein the conveyor track (1) is provided with the conveyor belt (2), the conveyor belt (2) is driven by a motor, the outer wall of the integrated box (4) is provided with interconnected holes, and the interior of the integrated box (4) is divided into two sets of spaces, and a set of the conveyor track (1) is provided at the bottom of the integrated box (4), characterized in that: A placement seat (3) is provided on the top surface of the conveyor belt (2). The inner wall of the placement seat (3) is provided with a groove. A limit block is hinged in the groove. A torsion spring is provided at the hinge of the limit block. The gas cylinder is inserted into the placement seat (3). A cleaning component is provided in the front space of the integrated box (4). In order to cooperate with the cleaning component, a water tank (6) is provided on the top surface of the integrated box (4). The water tank (6) is equipped with a water pump. The water pump is inserted into the front space through a water pipe (5), and a nozzle is provided at the end of the water pipe (5). The front space is equipped with a lifting mechanism for hoisting gas cylinders at the top, and a drying mechanism for cleaning the outer wall of the gas cylinders is provided in the rear space.
2. The integrated device for high-efficiency cleaning and drying of gas cylinders according to claim 1, characterized in that: The cleaning assembly includes a cleaning chamber (21), a cleaning roller (22), a cleaning motor (23), and a second push cylinder (24). The second push cylinder (24) is provided on the inner wall of the front space. The two second push cylinders (24) are arranged in a group and are symmetrically arranged on the left and right. The cleaning chamber (21) is provided at the telescopic end of the second push cylinder (24). The opposite side of the cleaning chamber (21) is provided with a groove. The cleaning roller (22) is rotatably connected in the groove. The cleaning motor (23) that drives the cleaning roller (22) to rotate is provided at the bottom of the cleaning chamber (21).
3. The integrated device for high-efficiency cleaning and drying of gas cylinders according to claim 1, characterized in that: The lifting mechanism includes a first push cylinder (7), a connecting column (8), a rotating mechanism, a drive gear (16), a driven gear (17), a clamping cover (18), a telescopic block (19), and a sliding column (20). The first push cylinder (7) is mounted on an integrated box (4), and the connecting column (8) is rotatably connected to the telescopic end of the first push cylinder (7). A rotating mechanism is provided on the outer wall of the connecting column (8). A clamping cover (18) is provided on the bottom surface of the connecting column (8), and a second base plate (14) is provided below the rotating mechanism. A clamping motor (15) is provided on the top surface of the second base plate (14), and the drive shaft of the clamping motor (15) passes through the second base plate (14). The clamping motor (15) has a drive gear (16) on its drive shaft. The clamping cover (18) has a telescopic hole (180) that communicates with the interior on its outer wall. The telescopic hole (180) is rectangular. The telescopic block (19) is slidably connected in the telescopic hole (180). The top surface of the telescopic block (19) has a sliding column (20). A set of driven gears (17) is rotatably connected to the outer wall of the clamping cover (18). The driven gears (17) mesh with the drive gear (16). The driven gears (17) have a slide rail (170) for the sliding column (20) to slide on the driven gears (17). The slide rail (170) is arc-shaped.
4. The integrated device for high-efficiency cleaning and drying of gas cylinders according to claim 3, characterized in that: The rotating mechanism includes a base plate (9), a driven synchronous wheel (10), a driving synchronous wheel (11), a synchronous belt (12), and a gas cylinder rotary motor (13). The telescopic end of the first push cylinder (7) is located on an L-shaped connector, and the bottom of the connector is provided with a base plate (9). A connecting column (8) is slidably connected to the base plate (9), and a driven synchronous wheel (10) is coaxially provided on the connecting column (8). A driving synchronous wheel (11) is rotatably connected to the base plate (9). The driving synchronous wheel (11) has a polygonal hole in the middle. A groove is provided on the integrated box (4), and a gas cylinder rotary motor (13) is provided in the groove. The drive shaft of the gas cylinder rotary motor (13) is adapted to the polygonal hole. A hole corresponding to the position of the polygonal hole is provided on the base plate (9). The driving synchronous wheel (11) and the driven synchronous wheel (10) are connected by a synchronous belt (12).
5. The integrated device for high-efficiency cleaning and drying of gas cylinders according to claim 1, characterized in that: The drying mechanism includes a fan (25) and a duct (26), a lifting screw (27), a positioning rod (28), a lifting motor (29), a blower (30), and an auxiliary lug (31). Mounting plates are provided on the inner wall of the rear space. The mounting plates are symmetrically arranged on the left and right sides, and the lifting screw (27) and the positioning rod (28) are rotatably connected to the two mounting plates respectively. The lifting screw (27) is driven by the lifting motor (29), and a set of annular blowers (30) is provided between the lifting screw (27) and the positioning rod (28). The top surface of the blower (30)... A duct (300) is provided, and an air outlet (301) connecting to the outside is provided on the inner wall of the duct (300). A cover plate (32) is provided on the top surface of the blower (30), and two sets of symmetrical auxiliary ears (31) are provided on the outer wall of the blower (30). The two sets of auxiliary ears (31) are respectively threaded to the lifting screw (27) and the positioning rod (28). An air inlet is provided on the cover plate (32), and the air inlet is connected to the duct (300). The air inlet is connected to the fan (25) located on the top of the integrated box (4) through the air pipe (26).