Heating equipment for producing constant-temperature high-performance waterborne polyurethane finish paint

Abstract

The invention discloses heating equipment for producing constant-temperature high-performance waterborne polyurethane finish paint, belongs to the field of polyurethane finish paint, and aims to solve the problems that the heating speed is increased by mainly adopting a mixing mode when the conventional heating equipment for producing the polyurethane finish paint is used for heating, but the polyurethane finish paint has certain viscosity, so that the heating efficiency is low. In order to solve the problems of low bubble discharging speed and influence on production efficiency due to the fact that bubbles at the bottom of the heating device are difficult to move to the upper part during mixing, the heating device for producing the constant-temperature high-performance waterborne polyurethane finish paint comprises a shell, a feeding hole formed in one side of the upper part of the shell, and a discharging hole formed in the lower part of the shell, the heating plate is arranged in the middle of the shell, the reciprocating mechanism is arranged above the shell, through the reciprocating mechanism and the pushing mechanism, the reciprocating mechanism drives the pushing mechanism to do reciprocating motion when doing reciprocating motion, the pushing mechanism pulls paint on the lower portion to the upper portion for exhausting, and therefore the purpose of improving the exhausting efficiency is achieved.

Description

Technical Field

[0001] The invention relates to the field of polyurethane topcoat, and in particular to a heating device for producing a constant-temperature high-performance water-based polyurethane topcoat. Background Art

[0002] Constant temperature high performance waterborne polyurethane topcoat heating device usually refers to equipment used to heat waterborne polyurethane topcoat on a coating production line. The main function of this device is to help the waterborne polyurethane topcoat to cure and dry quickly after coating, thereby improving coating efficiency and coating quality.

[0003] The publication number is CN203990420U, which includes a kettle body and a kettle cover connected to the kettle body, and is characterized in that: a stirring shaft is installed through the kettle cover, a stirring motor is connected to the stirring shaft outside the kettle cover, a stirring paddle is provided on the stirring shaft inside the kettle cover, and a rotating wheel is also provided at the center of the bottom of the kettle body, and a scraper is connected to the rotating wheel and rotates closely against the inner wall of the kettle body. The existing heating equipment for polyurethane topcoat production mainly adopts a mixing method to accelerate the heating speed during heating, but the polyurethane topcoat has a certain viscosity, and the bubbles at the bottom are difficult to move to the top during mixing, which makes the bubble discharge speed slow, affecting the production efficiency.

[0004] To solve the above problems, a constant temperature high performance waterborne polyurethane topcoat production heating device is proposed. Summary of the invention

[0005] The purpose of the present invention is to provide a constant temperature and high-performance heating device for producing water-based polyurethane topcoat, which solves the problem that the existing heating device for producing polyurethane topcoat mainly adopts a mixing method to accelerate the heating speed during heating, but the polyurethane topcoat has a certain viscosity, and the bubbles at the bottom are difficult to move to the top during mixing, which makes the bubble discharge speed slow and affects the production efficiency.

[0006] To achieve the above object, the present invention provides the following technical solution: a constant temperature high-performance waterborne polyurethane topcoat production heating device, comprising a housing, a feed port arranged inside one side of the upper side of the housing, a discharge port arranged inside the lower side of the housing, a heating plate arranged inside the middle of the housing, a reciprocating mechanism arranged above the housing, and a pushing mechanism arranged below the reciprocating mechanism;

[0007] The pushing mechanism includes an elastic component and a sliding component, and the sliding component is arranged below the elastic component;

[0008] The reciprocating mechanism includes a motor fixedly connected to the top of the shell, the output end of the motor is fixedly connected to the first rotating shaft, the other end of the first rotating shaft is fixedly connected to the first rotating rod, a first hole is provided inside the other side of the top of the shell, a first push rod is provided on the inner side of the first hole, the upper end of the first push rod is fixedly connected to the first connecting plate, a first guide hole is provided on the inner side of the first connecting plate, a first guide rod is provided on the inner side of the first guide hole, and the first guide rod is connected to the first rotating rod in a fixed manner.

[0009] Preferably, the appearance structure of the first push rod is a cuboid, and the outer side surface of the first push rod fits with the inner side surface of the first hole.

[0010] Preferably, the appearance structural shapes of both ends of the first guide hole are straight lines, and the appearance structural shape of the middle end of the first guide hole is arc-shaped, and the matching mode of the first guide hole and the first guide rod is clearance matching.

[0011] Preferably, the elastic component includes a second push rod fixedly connected to the lower end of the first push rod, a first slide groove is arranged inside the second push rod, a first slider is arranged on the inner side of the first slide groove, a first fixing plate is fixedly connected to the lower end of the first slider, a third connecting plate is fixedly connected to the lower end of the first fixing plate, a second hole is arranged inside the third connecting plate, a second connecting plate is fixedly connected to the lower end of the third connecting plate, a third hole is arranged in the middle of the second connecting plate, a guide groove is opened on the outer side of one side surface of the shell, a point a is arranged on the outer side of the upper end of the guide groove, a point b is arranged on the inner side of the upper end of the guide groove, a point c is arranged on the outer side of the lower end of the guide groove, and a A point b is provided on the inner side of the lower end, a second guide rod is provided on the inner side of the guide groove, the second guide rod is connected to the first fixed plate in a fixed connection, grooves are provided at both ends of the second connecting plate, a spring is fixedly connected to the inner side of the groove, the upper end of the spring is fixedly connected to the first baffle, a second slide groove is provided on the middle end of the outer shell close to the guide groove, a second slider is provided on the inner side of the second slide groove, a sliding plate is fixedly connected to the end of the second slider away from the inner wall of the outer shell, an elastic telescopic rod is fixedly connected to the side of the sliding plate close to the guide groove, the second baffle is fixedly connected to the side of the elastic telescopic rod close to the guide groove, and a push plate is fixedly connected to the inner wall of the other side of the outer shell.

[0012] Preferably, the width of the upper end of the first sliding block is greater than the width of the lower end of the first sliding block, and the outer surface of the first sliding block is in contact with the inner surface of the first sliding groove.

[0013] Preferably, the width of the second baffle plate on a side close to the second slide groove is greater than the width of the third hole.

[0014] Preferably, two side surfaces of the upper end of the first baffle are inclined surfaces, and the appearance structure of the lower end of the first baffle is a rectangular parallelepiped.

[0015] Preferably, the width of the second sliding block at an end away from the sliding plate is greater than the width of the second sliding block at an end close to the sliding plate.

[0016] Preferably, point a of the guide groove is closer to the push plate than point b of the guide groove, and point c of the guide groove is farther away from the push plate than point d of the guide groove.

[0017] Preferably, the sliding assembly includes an exhaust fan fixedly connected to both sides of the outer shell, the air inlet of the exhaust fan is fixedly connected to the suction pipe, one side of the first slide groove is internally connected with a fourth hole, the inner side of the fourth hole is provided with a fourth connecting plate, the fourth connecting plate is connected to the first slider in a fixed manner, the upper end of the fourth connecting plate is fixedly connected to a fixed telescopic rod, the fixed telescopic rod is connected to the suction pipe in a fixed manner, and the suction pipe is connected to the outer shell in a lateral sliding connection.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention provides a constant temperature, high-performance water-based polyurethane topcoat production heating equipment, which uses a reciprocating mechanism and a pushing mechanism, so that the reciprocating mechanism drives the pushing mechanism to reciprocate when performing reciprocating motion, so that the pushing mechanism pulls the paint below to the top for exhaust. Compared with the prior art, the paint below can be moved to the top, thereby achieving the purpose of improving the exhaust efficiency.

[0020] 2. The invention provides a constant temperature high performance waterborne polyurethane topcoat production heating device. The sliding assembly in the reciprocating mechanism can drive the pushing mechanism to move horizontally, so that the adsorption range of the exhaust fan is improved. Compared with the prior art, the dead angle or local over-extraction is reduced, thereby achieving the purpose of more bubbles being sucked out. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the front cross-sectional structure of the housing of the present invention;

[0023] Figure 3 is a schematic diagram of a front cross-sectional structure of a second connecting plate of the present invention;

[0024] Figure 4 It is a schematic diagram of the front view structure of the guide groove of the present invention;

[0025] Figure 5 For the present invention Figure 2 Schematic diagram of the structure at B in the middle;

[0026] Figure 6 For the present invention Figure 1 Schematic diagram of the structure at point A in the middle.

[0027] In the figure: 1, housing; 2, feed port; 3, discharge port; 4, heating plate; 5, reciprocating mechanism; 6, pushing mechanism; 61, elastic component; 62, sliding component; 501, motor; 502, first rotating shaft; 503, first rotating rod; 504, first hole; 505, first push rod; 506, first connecting plate; 507, first guide hole; 508, first guide rod; 6101, second push rod; 6102, first slide groove; 6103, first slider; 6104, first fixing plate; 6105, third connecting plate; 6106, first guide hole; 6107, first guide hole; 6108, first guide rod; 6109, second push rod; 6110, first slide groove; 6111, first sliding block; 6112, first fixing plate; 6113, third connecting plate; 6114, first fixing plate; 6115, third connecting plate; 6116, first guide hole; 6117, first guide hole; 6118, first guide rod; 6119, second push rod; 6120, first slide groove; 6121, first sliding block; 6122, first fixing plate; 6123, third connecting plate; 6124, first fixing plate; 6125, third connecting plate; 6126, first fixing plate; 6127, first fixing plate; 6128, first connecting plate; 6129, first connecting plate; 6130, first connecting plate; 6131, first connecting plate; 6132, first connecting plate; 6133, first connecting plate; 6134, first fixing plate; 6135, first connecting plate; 6136, first connecting plate; 6137, first connecting plate; 6138, first connecting plate; 6139, first 106, second hole; 6107, second connecting plate; 6108, third hole; 6109, guide groove; 6110, second guide rod; 6111, groove; 6112, spring; 6113, first baffle; 6114, second slide groove; 6115, second slider; 6116, sliding plate; 6117, elastic telescopic rod; 6118, second baffle; 6119, push plate; 6201, exhaust fan; 6202, suction pipe; 6203, fourth hole; 6204, fourth connecting plate; 6205, fixed telescopic rod. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-Figure 6 The present invention provides a technical solution: a constant temperature high-performance waterborne polyurethane topcoat production heating device, comprising a shell 1, a feed port 2 arranged inside one side of the upper part of the shell 1, a discharge port 3 arranged inside the lower part of the shell 1, a heating plate 4 arranged inside the middle of the shell 1, a reciprocating mechanism 5 arranged above the shell 1, and a pushing mechanism 6 arranged below the reciprocating mechanism 5;

[0030] The pushing mechanism 6 includes an elastic component 61 and a sliding component 62, and the sliding component 62 is arranged below the elastic component 61;

[0031] The reciprocating mechanism 5 includes a motor 501 fixedly connected to the top of the housing 1, the output end of the motor 501 is fixedly connected to the first rotating shaft 502, the other end of the first rotating shaft 502 is fixedly connected to the first rotating rod 503, a first hole 504 is provided inside the other side of the top of the housing 1, a first push rod 505 is provided inside the first hole 504, the appearance structure of the first push rod 505 is a rectangular parallelepiped, and the outer side surface of the first push rod 505 is in contact with the inner side surface of the first hole 504, so that the first push rod 505 does not rotate when it moves inside the first hole 504, the upper end of the first push rod 505 is fixedly connected to the first connecting plate 506, the inner side of the first connecting plate 506 is provided with The first guide hole 507, a first guide rod 508 is arranged on the inner side of the first guide hole 507, the connection mode of the first guide rod 508 and the first rotating rod 503 is a fixed connection, the appearance structural shapes of the two ends of the first guide hole 507 are straight lines, and the appearance structural shape of the middle end of the first guide hole 507 is arc-shaped, and the cooperation mode of the first guide hole 507 and the first guide rod 508 is a clearance cooperation, so that when the first guide rod 508 moves inside the straight hole of the first guide hole 507, it can drive the first connecting plate 506 to move up and down, and when the first guide rod 508 moves inside the arc hole of the first guide hole 507, it will not drive the first connecting plate 506 to move up and down.

[0032] The elastic component 61 includes a second push rod 6101 fixedly connected to the lower end of the first push rod 505, a first slide groove 6102 is arranged inside the second push rod 6101, a first slider 6103 is arranged inside the first slide groove 6102, the upper end width of the first slider 6103 is greater than the lower end width of the first slider 6103, and the outer surface of the first slider 6103 is in contact with the inner surface of the first slide groove 6102, so that the first slider 6103 can move inside the first slide groove 6102 without moving out of the inner side of the first slide groove 6102, the lower end of the first slider 6103 is fixedly connected to the first fixing plate 6104, the lower end of the first fixing plate 6104 is fixedly connected to the third connecting plate 6105, and the third connecting plate 610 5 is provided with a second hole 6106, the lower end of the third connecting plate 6105 is fixedly connected with the second connecting plate 6107, the middle of the second connecting plate 6107 is provided with a third hole 6108, a guide groove 6109 is provided on the outer side of one side of the housing 1, a point a is provided on the outer side of the upper end of the guide groove 6109, a point b is provided on the inner side of the upper end of the guide groove 6109, a point c is provided on the outer side of the lower end of the guide groove 6109, a point b is provided on the inner side of the lower end of the guide groove 6109, a second guide rod 6110 is provided on the inner side of the guide groove 6109, and the second guide rod 6110 is connected to the first fixing plate 6104 in a fixed connection manner, and grooves 6111 are provided at both ends of the second connecting plate 6107, and the inner side of the groove 6111 A spring 6112 is fixedly connected, and the upper end of the spring 6112 is fixedly connected to a first baffle 6113, and the two side surfaces of the upper end of the first baffle 6113 are inclined surfaces, and the appearance structure of the lower end of the first baffle 6113 is a rectangular parallelepiped, so that the second baffle 6118 can push the first baffle 6113 to move downward along the trajectory of the first baffle 6113, and a second slide groove 6114 is provided at the middle end of the side of the shell 1 close to the guide groove 6109, and a second slider 6115 is provided on the inner side of the second slide groove 6114, and a sliding plate 6116 is fixedly connected to the end of the second slider 6115 away from the inner wall of the shell 1, and an elastic telescopic rod 6117 is fixedly connected to the side of the sliding plate 6116 close to the guide groove 6109, and the elastic telescopic rod 6117 is close to the guide groove 6109. A second baffle 6118 is fixedly connected to one side of the guide groove 6109, and a push plate 6119 is fixedly connected to the inner wall of the other side of the shell 1. The width of the second baffle 6118 near the second slide groove 6114 is greater than the width of the third hole 6108, so that the second connecting plate 6107 can support the second baffle 6118. The width of the second slider 6115 away from the sliding plate 6116 is greater than the width of the second slider 6115 near the sliding plate 6116, so that the second slider 6115 can move inside the second slide groove 6114, but the second slider 6115 will not move inside the second slide groove 6114. Point a of the guide groove 6109 is closer to the push plate 6119 than point b of the guide groove 6109.And point c of the guide groove 6109 is farther away from the push plate 6119 than point d of the guide groove 6109, so that when the second guide rod 6110 moves to the position of point a and moves downward, it can move to the side of the guide groove 6109 close to the push plate 6119, and when the second guide rod 6110 moves to the position of point c and moves upward, it can move to the side of the guide groove 6109 away from the push plate 6119.

[0033] The sliding assembly 62 includes an exhaust fan 6201 fixedly connected to both sides of the outer shell 1, the air inlet of the exhaust fan 6201 is fixedly connected to the suction pipe 6202, one side of the first slide groove 6102 is internally connected to the fourth hole 6203, the inner side of the fourth hole 6203 is provided with a fourth connecting plate 6204, the fourth connecting plate 6204 is connected to the first slider 6103 in a fixed connection, the upper end of the fourth connecting plate 6204 is fixedly connected to a fixed telescopic rod 6205, the fixed telescopic rod 6205 is connected to the suction pipe 6202 in a fixed connection, and the suction pipe 6202 is connected to the outer shell 1 in a lateral sliding connection.

[0034] When heating the constant temperature high-performance water-based polyurethane topcoat, the heating plate 4 is started for heating, and it is necessary to accelerate the discharge of bubbles, and the motor 501 is started to drive the first rotating shaft 502 to rotate, so that the first guide rod 508 rotates. Because the first guide rod 508 is arranged on the inner side of the first guide hole 507, and because the appearance and structural shapes of the two ends of the first guide hole 507 are straight lines, and the appearance and structural shape of the middle end of the first guide hole 507 is arc-shaped, when the first guide rod 508 moves inside the straight hole, it can push the first connecting plate 506 and the first push rod 505 to move up and down, and drive the first slider 6103 and the first fixed plate 6104 to move up and down. When the first fixed plate 6104 moves downward, the second guide rod 6110 is on the inner side of the guide groove 6109 close to the push plate 6119, through the polyurethane above. The topcoat covers the polyurethane topcoat below. When the second guide rod 6110 moves upward, it can move to the inner side of the guide groove 6109 away from the push plate 6119, so that the first fixed plate 6104 moves toward the middle inner side, so that the second baffle plate 6118 pushes the first baffle plate 6113 to move toward the inner side of the groove 6111. When the second baffle plate 6118 moves to the upper end of the second connecting plate 6107, it blocks the bottom of the first fixed plate 6104, and drives the top glue below to move upward. When the second guide rod 6110 moves to point a of the guide groove 6109, the push plate 6119 pushes the second baffle plate 6118 to move past the position of the first baffle plate 6113, so that the polyurethane topcoat falls and moves to the upper layer under the action of gravity, so that the exhaust fan 6201 and the suction pipe 6202 can more easily suck out the bubbles, thereby improving the exhaust efficiency.

[0035] When the first fixed plate 6104 moves laterally, it drives the first slider 6103, the fourth connecting plate 6204, the fixed telescopic rod 6205 and the suction pipe 6202 to move laterally. By moving the suction pipe 6202 back and forth, it can ensure that the air inside the entire shell 1 is evenly extracted, reducing dead corners or local over-extraction, so that more bubbles can be sucked out.

[0036] When the first fixed plate 6104 is discharging material, the suction pipe 6202 will just move to the position where the first fixed plate 6104 is discharging material, collect and lower the bubbles of the polyurethane topcoat moving from the bottom, so that the bubbles can be sucked out better.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A constant temperature high performance waterborne polyurethane topcoat production heating device, comprising a housing (1), a feed port (2) arranged inside one side of the upper part of the housing (1), a discharge port (3) arranged inside the lower part of the housing (1), and a heating plate (4) arranged inside the middle of the housing (1), characterized in that: A reciprocating mechanism (5) is disposed above the housing (1), and a pushing mechanism (6) is disposed below the reciprocating mechanism (5); The pushing mechanism (6) comprises an elastic component (61) and a sliding component (62), wherein the sliding component (62) is arranged below the elastic component (61); The reciprocating mechanism (5) comprises a motor (501) fixedly connected to the top of the housing (1); the output end of the motor (501) is fixedly connected to a first rotating shaft (502); the other end of the first rotating shaft (502) is fixedly connected to a first rotating rod (503); a first hole (504) is provided inside the other side of the top of the housing (1); a first push rod (505) is provided inside the first hole (504); the upper end of the first push rod (505) is fixedly connected to a first connecting plate (506); a first guide hole (507) is provided inside the first connecting plate (506); a first guide rod (508) is provided inside the first guide hole (507); the first guide rod (508) is connected to the first rotating rod (503) in a fixed manner.

2. A constant temperature high performance waterborne polyurethane topcoat production heating device according to claim 1, characterized in that: The first push rod (505) has an appearance structure of a rectangular parallelepiped, and the outer side surface of the first push rod (505) fits the inner side surface of the first hole (504).

3. A constant temperature high performance waterborne polyurethane topcoat production heating device according to claim 1, characterized in that: The appearance and structural shapes of the two ends of the first guide hole (507) are straight lines, and the appearance and structural shape of the middle end of the first guide hole (507) is arc-shaped, and the matching mode of the first guide hole (507) and the first guide rod (508) is clearance matching.

4. A constant temperature high performance waterborne polyurethane topcoat production heating device according to claim 1, characterized in that: The elastic component (61) includes a second push rod (6101) fixedly connected to the lower end of the first push rod (505), a first slide groove (6102) is arranged inside the second push rod (6101), a first slider (6103) is arranged inside the first slide groove (6102), a first fixed plate (6104) is fixedly connected to the lower end of the first slider (6103), a third connecting plate (6105) is fixedly connected to the lower end of the first fixing plate (6104), and a second hole is arranged inside the third connecting plate (6105). The lower end of the third connecting plate (6105) is fixedly connected to the second connecting plate (6107), the middle of the second connecting plate (6107) is provided with a third hole (6108), a guide groove (6109) is provided on the outer side of one side of the housing (1), a point a is provided on the outer side of the upper end of the guide groove (6109), a point b is provided on the inner side of the upper end of the guide groove (6109), a point c is provided on the outer side of the lower end of the guide groove (6109), and a point b is provided on the inner side of the lower end of the guide groove (6109). A second guide rod (6110) is arranged on the inner side of the guide groove (6109), and the second guide rod (6110) is connected to the first fixing plate (6104) in a fixed manner. Grooves (6111) are arranged at both ends of the second connecting plate (6107), and a spring (6112) is fixedly connected to the inner side of the groove (6111), and a first baffle (6113) is fixedly connected to the upper end of the spring (6112). A second slide groove (6113) is provided on the middle end of one side of the housing (1) close to the guide groove (6109). 14), a second slider (6115) is provided on the inner side of the second slide groove (6114), and a sliding plate (6116) is fixedly connected to one end of the second slider (6115) away from the inner wall of the housing (1), and an elastic telescopic rod (6117) is fixedly connected to the side of the sliding plate (6116) close to the guide groove (6109), and a second baffle (6118) is fixedly connected to the side of the elastic telescopic rod (6117) close to the guide groove (6109), and a push plate (6119) is fixedly connected to the inner wall of the other side of the housing (1).

5. A constant temperature high performance waterborne polyurethane topcoat production heating device according to claim 4, characterized in that: The width of the upper end of the first slider (6103) is greater than the width of the lower end of the first slider (6103), and the outer surface of the first slider (6103) is in contact with the inner surface of the first slide groove (6102).

6. A constant temperature high performance waterborne polyurethane topcoat production heating device according to claim 4, characterized in that: The width of the second baffle (6118) on the side close to the second slide groove (6114) is greater than the width of the third hole (6108).

7. A constant temperature high performance waterborne polyurethane topcoat production heating device according to claim 4, characterized in that: The two side surfaces of the upper end of the first baffle (6113) are inclined surfaces, and the appearance structure of the lower end of the first baffle (6113) is a rectangular parallelepiped.

8. The constant temperature high performance waterborne polyurethane topcoat production heating device according to claim 4, characterized in that: The width of the second slider (6115) at one end away from the sliding plate (6116) is greater than the width of the second slider (6115) at one end close to the sliding plate (6116).

9. A constant temperature high performance waterborne polyurethane topcoat production heating device according to claim 4, characterized in that: Point a of the guide groove (6109) is closer to the push plate (6119) than point b of the guide groove (6109), and point c of the guide groove (6109) is farther away from the push plate (6119) than point d of the guide groove (6109).

10. The constant temperature high performance waterborne polyurethane topcoat production heating device according to claim 1, characterized in that: The sliding assembly (62) includes an exhaust fan (6201) fixedly connected to both sides of the outer shell (1); an air inlet of the exhaust fan (6201) is fixedly connected to an air suction pipe (6202); one side of the first slide groove (6102) is internally connected to a fourth hole (6203); a fourth connecting plate (6204) is provided on the inner side of the fourth hole (6203); the fourth connecting plate (6204) is connected to the first sliding block (6103) in a fixed manner; a fixed telescopic rod (6205) is fixedly connected to the upper end of the fourth connecting plate (6204); the fixed telescopic rod (6205) is connected to the air suction pipe (6202) in a fixed manner; and the air suction pipe (6202) is connected to the outer shell (1) in a transverse sliding manner.

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