Vacuum pump suitable for high-humidity environment

Abstract

The invention discloses a vacuum pump suitable for a high-humidity environment, and relates to the technical field of vacuum pumps, the vacuum pump comprises an exhaust pipe body, an air inlet pipe body, a filter, two first limiting shells and two second limiting shells, the two first limiting shells are connected in a sliding mode, and the first limiting shells can be movably connected with adjacent first sealing rings in a clamped mode; the first limiting shell and the second limiting shell can be movably connected with the exhaust pipe body and the air inlet pipe body in a clamped mode. When the first exhaust pipe exhausts air, air flow enters the first exhaust pipe through the connecting pipe, heat dissipation of the spiral frame and the guide cylinder is accelerated through the air flow, so that the guide cylinder and the spiral frame are kept at the low temperature, and when moisture enters from the lower end of the second exhaust pipe, the moisture makes contact with the guide cylinder and the spiral frame to be condensed into water drops, and then the water drops slide out along the outer portion of the spiral frame; in cooperation with the adsorption effect of the filter screen, moisture entering is reduced, the filtering effect of the filter is kept, and the service life of the filter is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of vacuum pumps, and particularly to a vacuum pump suitable for high-humidity environments. Background Art

[0002] A vacuum pump is a device used to generate and maintain a vacuum environment, and is widely used in multiple fields such as scientific research, industrial production, and medical equipment. Its functions include: 1. Generating a vacuum. The vacuum pump can extract the air in a closed container, making the pressure in the container lower than the atmospheric pressure, thereby forming a vacuum environment; 2. Maintaining the vacuum: After the vacuum system reaches a certain vacuum degree, the vacuum pump can continue to work to maintain the vacuum degree of the system and prevent air from re-entering, etc. If the extracted gas contains harmful components, an exhaust filter should be used to purify the gas before discharging.

[0003] In high-humidity conditions, the vacuum pump and the internal filter will be affected in many aspects. In a high-humidity environment, the water vapor content in the air is high. For the pipeline at the connection between the pump and other parts of the vacuum system, if the seal is not tight, moisture can enter, which may cause the internal parts of the pump to rust more quickly; when moisture enters the vacuum pump filter, the water vapor may condense into liquid water on the surface of the filter element. These liquid waters will gradually accumulate, block the pores of the filter element, and increase the resistance of the filter; some existing vacuum pumps do not treat the moisture in the exhaust pipe, resulting in a large amount of moisture entering the interior of the exhaust filter, affecting its filtering effect and at the same time reducing its service life. Moreover, the existing means of replacing the exhaust filter are also relatively cumbersome, requiring the entire disassembly of the exhaust pipe and then taking out the exhaust filter, making the vacuum pump not easy to adapt to high-humidity working environments. Summary of the Invention

[0004] The purpose of the present invention is to provide a vacuum pump suitable for high-humidity environments to solve the problems raised in the above background art.

[0005] To solve the above technical problems, a vacuum pump suitable for high-humidity environments provided by the present invention includes an exhaust pipe body, an intake pipe body, and a filter.

[0006] An exhaust pipe one and an exhaust pipe two are fixedly connected and communicated to the outside of the exhaust pipe body. A connecting pipe is slidably connected between the exhaust pipe one and the exhaust pipe two. An airbag for limiting the filter is fixedly connected to the inner wall of the connecting pipe. A spiral frame is fixedly connected to the inside of the exhaust pipe two.

[0007] Furthermore, two first limiting shells and two second limiting shells are arranged outside the exhaust pipe body. The two first limiting shells are slidably connected to each other. The first limiting shell can be movably clamped with the adjacent first sealing ring. Both the first limiting shell and the second limiting shell can be movably clamped with the exhaust pipe body and the intake pipe body. Sealing rings and sealing strips are fixedly connected to the outsides of the first limiting shell and the second limiting shell respectively. Limiting rods are slidably connected to both sides of the limiting rod. One end of the limiting rod can be movably clamped with the adjacent second limiting shell. A plurality of first springs are fixedly connected between the limiting rod and the first limiting shell.

[0008] Furthermore, a guiding cylinder is fixedly connected between the inner walls of the second exhaust pipe. The spiral frame is fixedly connected to the inner wall of the guiding cylinder. Both the spiral frame and the guiding cylinder are made of aluminum. A filter screen is fixedly connected between the inner walls of the second exhaust pipe.

[0009] Furthermore, a support plate is fixedly sleeved on the outer wall of the first exhaust pipe. The second exhaust pipe penetrates through the support plate and is fixedly connected thereto. Two vertical rods are symmetrically and fixedly connected to the top of the support plate. Both the two vertical rods penetrate through the connecting pipe and are slidably connected thereto.

[0010] Furthermore, a clamping seat is arranged between the two first limiting shells. The clamping seat is fixedly connected to the support plate. Connecting rods are slidably connected to both ends of the clamping seat. The connecting rods are fixedly connected to the adjacent first limiting shell. A pulling plate is slidably connected to the outer wall of the clamping seat. Two second springs are fixedly connected between the pulling plate and the clamping seat. Four inserting rods are fixedly connected to the bottom of the pulling plate. All the inserting rods can be movably clamped with the adjacent connecting rod.

[0011] Furthermore, limiting rings are arranged outside the opposite ends of the first exhaust pipe and the second exhaust pipe. Two cross bars are fixedly connected to the outer walls of the first exhaust pipe and the second exhaust pipe respectively. The cross bars penetrate through the adjacent limiting rings and are slidably connected thereto. Third springs are fixedly connected between the limiting rings and the adjacent cross bars. Sealing rings are fixedly embedded in the inner walls of the limiting rings.

[0012] Furthermore, two auxiliary frames are fixedly connected to the top of the support plate. A top rod is slidably connected inside the auxiliary frame. A lead screw is rotatably connected inside the auxiliary frame. The lead screw penetrates through the adjacent top rod and is in threaded connection therewith. A rotating rod is fixedly connected between the two lead screws.

[0013] Furthermore, a positioning shell is fixedly sleeved on the outer wall of the connecting pipe. A fixing ring is fixedly connected to the inner wall of the connecting pipe. Four sliders are slidably connected inside the positioning shell. A regulating ring is rotatably connected between the inner walls of the positioning shell. Four arc-shaped grooves are equidistantly formed on one side of the regulating ring. A clamping rod is movably clamped inside the arc-shaped groove. One end of the clamping rod is fixedly connected to the adjacent slider. A pressing plate is fixedly sleeved on the outer wall of the clamping rod. The pressing plate penetrates through the connecting pipe and is slidably connected thereto.

[0014] Further, a snap ring is rotatably connected to one side of the positioning shell. A grip rod is fixedly sleeved inside the snap ring. One end of the grip rod penetrates through the positioning shell and is fixedly connected to the adjustment ring.

[0015] Further, a fixing screw is screwed on one side of the positioning shell. The fixing screw can penetrate through the grip rod and is movably clamped with it.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. When the first exhaust pipe exhausts, the airflow enters the interior of the first exhaust pipe through the connecting pipe. The airflow accelerates the heat dissipation of the spiral frame and the guiding cylinder, so that the guiding cylinder and the spiral frame maintain a relatively low temperature. When moisture enters from the lower end of the second exhaust pipe, it condenses into water droplets by contacting the guiding cylinder and the spiral frame and then slides out along the outside of the spiral frame. With the adsorption effect of the filter screen, the entry of moisture is reduced, which is beneficial to maintaining the filtering effect of the filter and prolonging its service life.

[0018] 2. Rotate the rotating rod to drive the two lead screws to rotate, drive the two ejector rods to move outward in the opposite direction, so as to push the two limiting rings away from each other, move the connecting pipe downward to contact the two auxiliary frames, and rotate the rotating rod in the opposite direction to clamp the two limiting rings at both ends of the connecting pipe. Rotate the snap ring to move multiple pressing plates to squeeze the airbag, so that the airbag deforms to limit and seal the filter, making the replacement of the filter more convenient and beneficial to adapting to a high-humidity environment.

[0019] 3. Slide the first limiting shell to make it abut against the outer walls at both ends of the exhaust pipe body, and then insert the insertion rod into the connecting rod to limit the two first limiting shells. Then, connect the two second limiting shells to the first limiting shell. The first limiting shell and the second limiting shell cooperate to wrap the two connecting flanges on the exhaust pipe body. The airtightness between the first limiting shell and the second limiting shell is strengthened by the first sealing ring and the sealing strip, which is convenient to enhance the sealing effect at the connecting flanges of the exhaust pipe body and the intake pipe body, reduce the entry of moisture, and prolong the service life of the vacuum pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the overall structural schematic diagram of the present invention;

[0021] Figure 2 is the cross-sectional structural schematic diagram of the second limiting shell in the present invention;

[0022] Figure 3 is in the present invention Figure 2 is the partial enlarged structural schematic diagram at A in;

[0023] Figure 4 is the side-sectional structural schematic diagram of the connecting pipe in the present invention;

[0024] Figure 5Schematic side-sectional structure diagram of the auxiliary frame in the present invention;

[0025] Figure 6 Schematic side-sectional structure diagram of the positioning shell in the present invention;

[0026] Figure 7 In the present invention Figure 6 Schematic diagram of the partial enlarged structure at position B in

[0027] In the figure: 10. First limit shell; 101. First sealing ring; 102. Sealing strip; 103. Limit rod; 104. First spring; 11. Second limit shell; 12. Exhaust pipe body; 13. Intake pipe body; 14. First exhaust pipe; 141. Second exhaust pipe; 142. Connecting pipe; 1421. Airbag; 1422. Fixed ring; 143. Spiral frame; 144. Guide tube; 145. Filter screen; 15. Support plate; 151. Vertical rod; 16. Clamping seat; 161. Connecting rod; 162. Pulling plate; 163. Second spring; 164. Insertion rod; 17. Limit ring; 171. Second sealing ring; 172. Cross bar; 173. Third spring; 174. Auxiliary frame; 175. Lead screw; 176. Jacking rod; 177. Rotating rod; 18. Positioning shell; 181. Slide block; 182. Regulation ring; 183. Arc-shaped groove; 184. Clamping rod; 185. Pressing plate; 186. Snap ring; 187. Holding rod; 188. Fixed screw; 20. Filter. Detailed implementation manners

[0028] 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] Please refer to Figures 1-7 , the present invention provides a technical solution: a vacuum pump applicable to a high-humidity environment, including an exhaust pipe body 12, an intake pipe body 13, and a filter 20. An exhaust pipe one 14 and an exhaust pipe two 141 are fixedly connected and communicated to the outside of the exhaust pipe body 12. A connecting pipe 142 is slidably connected between the exhaust pipe one 14 and the exhaust pipe two 141. An airbag 1421 for limiting the filter 20 is fixedly connected to the inner wall of the connecting pipe 142. A spiral frame 143 is fixedly connected to the inside of the exhaust pipe two 141.

[0030] During specific implementation, when installing the first limiting shell 10, the first limiting shell 10 is slidably connected and abutted against the outer walls at both ends of the exhaust pipe body 12. Then, the insertion rod 164 is inserted into the inside of the connecting rod 161 to limit the two first limiting shells 10. Then, the two second limiting shells 11 are clamped with the first limiting shell 10, and the limiting rod 103 is inserted into the adjacent second limiting shell 11 for quick limiting. The first limiting shell 10 and the second limiting shell 11 cooperate to wrap the two connecting flanges on the exhaust pipe body 12. The airtightness between the first limiting shell 10 and the second limiting shell 11 is strengthened through the first sealing ring 101 and the sealing strip 102, so as to strengthen the sealing of the connection part on the exhaust pipe body 12 and reduce the intrusion of moisture. While the two first limiting shells 10 are fixed externally, the positions of the card seat 16 and the support plate 15 are also fixed at the same time. The first exhaust pipe 14 is fixedly connected to the exhaust pipe body 12. The first exhaust pipe 14 introduces gas into the filter 20 for filtration and then discharges it. When the first exhaust pipe 14 exhausts, the air flow enters the inside of the first exhaust pipe 14 through the connecting pipe 142. The air flow accelerates the heat dissipation of the spiral frame 143 and the guiding cylinder 144, so that the guiding cylinder 144 and the spiral frame 143 maintain a lower temperature. When moisture enters from the lower end of the second exhaust pipe 141, it condenses into water droplets by contacting the guiding cylinder 144 and the spiral frame 143 and then slides out along the outside of the spiral frame 143, reducing the entry of moisture and better adapting to a high-humidity environment;

[0031] When installing the filter 20, the filter 20 is inserted into the inside from one end of the connecting pipe 142 close to the first exhaust pipe 14, so that one end of the filter 20 contacts the fixing ring 1422. Then, the clamping ring 186 is rotated to drive the regulating ring 182 to rotate, so as to drive the clamping rod 184 to drive the pressing plate 185 to move through a plurality of arc-shaped grooves 183, so that the plurality of pressing plates 185 squeeze the airbag 1421, causing the airbag 1421 to deform and then abut against the adjacent end of the filter 20. While limiting the filter 20, one end of the filter 20 is sealed, so as to ensure that the discharged gas is concentrated and filtered through the inside of the filter 20 and then discharged, thereby improving the filtering effect. Then, the rotating rod 177 is rotated to drive the two lead screws 175 to rotate, driving the two ejector rods 176 to move outward in the opposite direction, so as to push the two limiting rings 17 away from each other. The connecting pipe 142 is moved downward to contact the two auxiliary frames 174, and the rotating rod 177 is rotated in the opposite direction to clamp the two limiting rings 17 at both ends of the connecting pipe 142, making the replacement of the filter 20 more convenient and conducive to adapting to a high-humidity environment.

[0032] Refer to Figures 1-3, there are two first limiting shells 10 and two second limiting shells 11 arranged outside the exhaust pipe body 12. The two first limiting shells 10 are slidably connected to each other. The first limiting shell 10 can be movably clamped with the adjacent first sealing ring 101. Both the first limiting shell 10 and the second limiting shell 11 can be movably clamped with the exhaust pipe body 12 and the intake pipe body 13. Sealing rings 101 and sealing strips 102 are fixedly connected to the outsides of both the first limiting shell 10 and the second limiting shell 11. Both sides of the limiting rod 103 are slidably connected to the limiting rod 103. One end of the limiting rod 103 can be movably clamped with the adjacent second limiting shell 11. A plurality of first springs 104 are fixedly connected between the limiting rod 103 and the first limiting shell 10;

[0033] A clamping seat 16 is arranged between the two first limiting shells 10. The clamping seat 16 is fixedly connected to the support plate 15. Connecting rods 161 are slidably connected to both ends of the clamping seat 16. The connecting rods 161 are fixedly connected to the adjacent first limiting shell 10. A pulling plate 162 is slidably connected to the outer wall of the clamping seat 16. Two second springs 163 are fixedly connected between the pulling plate 162 and the clamping seat 16. Four inserting rods 164 are fixedly connected to the bottom of the pulling plate 162. All the inserting rods 164 can be movably clamped with the adjacent connecting rod 161;

[0034] A support plate 15 is fixedly sleeved on the outer wall of the first exhaust pipe 14. The second exhaust pipe 141 penetrates through the support plate 15 and is fixedly connected thereto. Two vertical rods 151 are symmetrically and fixedly connected to the top of the support plate 15. Both vertical rods 151 penetrate through the connecting pipe 142 and are slidably connected thereto.

[0035] During specific implementation, when installing the two first limiting shells 10, slide and connect the first limiting shells 10 to make them close to the outer walls at both ends of the exhaust pipe body 12. Then, insert the inserting rods 164 into the inside of the connecting rods 161 to limit the two first limiting shells 10. Then, connect the two second limiting shells 11 with the first limiting shells 10, and quickly limit them by inserting the limiting rods 103 into the inside of the adjacent second limiting shells 11. The two connecting flanges on the exhaust pipe body 12 are wrapped by the cooperation of the first limiting shells 10 and the second limiting shells 11. The airtightness between the first limiting shells 10 and the second limiting shells 11 is strengthened by the sealing rings 101 and the sealing strips 102, so as to strengthen the sealing of the connection part on the exhaust pipe body 12 and reduce the intrusion of moisture. While fixing the outsides of the two first limiting shells 10, the positions of the clamping seat 16 and the support plate 15 are also fixed at the same time, so as to fix the support plate 15 and the components thereon.

[0036] Refer to Figure 4 , a guiding cylinder 144 is fixedly connected between the inner walls of the second exhaust pipe 141. The spiral frame 143 is fixedly connected to the inner wall of the guiding cylinder 144. Both the spiral frame 143 and the guiding cylinder 144 are made of aluminum. A filter screen 145 is fixedly connected between the inner walls of the second exhaust pipe 141.

[0037] During specific implementation, the spiral frame 143 is fixed through the guide tube 144. When the first exhaust pipe 14 exhausts, the air flow enters the interior of the first exhaust pipe 14 through the connecting pipe 142. The air flow accelerates the heat dissipation of the spiral frame 143 and the guide tube 144, enabling the guide tube 144 and the spiral frame 143 to maintain a relatively low temperature. When moisture enters from the lower end of the second exhaust pipe 141, it condenses into water droplets upon contact with the guide tube 144 and the spiral frame 143 and then slides out along the exterior of the spiral frame 143, reducing the entry of moisture and better adapting to a high-humidity environment. At the same time, the filter screen 145 is made of sodium acrylate material, which is a breathable and moisture-absorbing filter screen. It can reduce the entry of moisture and can absorb hundreds or even thousands of times its own weight of water. It has good water absorption and mild material properties, and does not generate heat or toxic substances during the water absorption process. By knocking on the exterior of the second exhaust pipe 141, the filter screen 145 can be vibrated, so that the moisture adsorbed by the filter screen 145 can be detached and slide down to the exterior of the second exhaust pipe 141.

[0038] Refer to Figures 4-5 , limiting rings 17 are provided on the outer sides of the opposite ends of the first exhaust pipe 14 and the second exhaust pipe 141. Two cross bars 172 are fixedly connected to the outer walls of the first exhaust pipe 14 and the second exhaust pipe 141. The cross bars 172 penetrate through the adjacent limiting rings 17 and are slidably connected thereto. A third spring 173 is fixedly connected between the limiting rings 17 and the adjacent cross bars 172. A second sealing ring 171 is fixedly embedded on the inner wall of the limiting ring 17;

[0039] Two auxiliary frames 174 are fixedly connected to the top of the support plate 15. A top rod 176 is slidably connected inside the auxiliary frame 174. A lead screw 175 is rotatably connected inside the auxiliary frame 174. The lead screw 175 penetrates through the adjacent top rod 176 and is threadedly connected thereto. A rotating rod 177 is fixedly connected between the two lead screws 175.

[0040] During specific implementation, when limiting the connecting pipe 142, first, the connecting pipe 142 is supported by the auxiliary frame 174. By rotating the rotating rod 177, the two lead screws 175 are driven to rotate, thereby driving the two top rods 176 to move into the interior of the auxiliary frame 174. Under the reset action of the third spring 173, the limiting rings 17 gradually approach the auxiliary frame 174. Then, the two limiting rings 17 are snapped onto the outer sides of the two ends of the connecting pipe 142, and the airtightness is enhanced by the second sealing ring 171. The connecting pipe 142 can be quickly limited, making the disassembly of the connecting pipe 142 more convenient and facilitating the replacement of the filter 20, so as to better adapt to a high-humidity environment.

[0041] Refer to Figures 6-7, a positioning shell 18 is fixedly sleeved on the outer wall of the connecting pipe 142, a fixing ring 1422 is fixedly connected to the inner wall of the connecting pipe 142, four sliders 181 are slidably connected inside the positioning shell 18, a regulating ring 182 is rotatably connected between the inner walls of the positioning shell 18, four arc-shaped grooves 183 are equidistantly arranged on one side of the regulating ring 182, a clamping rod 184 is movably clamped inside the arc-shaped groove 183, one end of the clamping rod 184 is fixedly connected to the adjacent slider 181, a pressing plate 185 is fixedly sleeved on the outer wall of the clamping rod 184, and the pressing plate 185 penetrates through the connecting pipe 142 and is slidably connected thereto;

[0042] A clamping ring 186 is rotatably connected to one side of the positioning shell 18, a holding rod 187 is fixedly sleeved inside the clamping ring 186, and one end of the holding rod 187 penetrates through the positioning shell 18 and is fixedly connected to the regulating ring 182;

[0043] A fixing screw 188 is screwed on one side of the positioning shell 18, and the fixing screw 188 can penetrate through the holding rod 187 and is movably clamped thereto.

[0044] During specific implementation, when installing the filter 20, the filter 20 is inserted into the inside from one end of the connecting pipe 142 close to the exhaust pipe 14, so that one end of the filter 20 contacts the fixing ring 1422. Then, the clamping ring 186 is rotated to drive the regulating ring 182 to rotate, so as to drive the clamping rod 184 to drive the pressing plate 185 to move through a plurality of arc-shaped grooves 183, so that the plurality of pressing plates 185 squeeze the airbag 1421, causing the airbag 1421 to deform and then abut against the adjacent end of the filter 20. While limiting the filter 20, one end of the filter 20 is sealed, so as to ensure that the discharged gas is concentrated and filtered through the inside of the filter 20 and then discharged, thereby improving the filtering effect.

[0045] Working principle: When installing the first limiting shell 10, the first limiting shell 10 is slidably connected and abutted against the outer walls at both ends of the exhaust pipe body 12. Then, the insertion rod 164 is inserted into the inside of the connecting rod 161 to limit the two first limiting shells 10. Then, the two second limiting shells 11 are clamped with the first limiting shell 10, and the limiting rod 103 is inserted into the adjacent second limiting shell 11 for quick limiting. The two connecting flanges on the exhaust pipe body 12 are wrapped by the cooperation of the first limiting shell 10 and the second limiting shell 11. The airtightness between the first limiting shell 10 and the second limiting shell 11 is strengthened by the first sealing ring 101 and the sealing strip 102, so as to strengthen the sealing of the connection part on the exhaust pipe body 12 and reduce the intrusion of moisture. While the two first limiting shells 10 are fixed externally, the positions of the clamping seat 16 and the support plate 15 are also fixed at the same time. The first exhaust pipe 14 is fixedly connected to the exhaust pipe body 12. The first exhaust pipe 14 introduces gas into the filter 20 for filtering and then discharging. When the first exhaust pipe 14 exhausts, the air flow enters the inside of the first exhaust pipe 14 through the connecting pipe 142. The air flow accelerates the heat dissipation of the spiral frame 143 and the guiding cylinder 144, so that the guiding cylinder 144 and the spiral frame 143 maintain a lower temperature. When moisture enters from the lower end of the second exhaust pipe 141, it condenses into water droplets by contacting the guiding cylinder 144 and the spiral frame 143 and then slides out along the outside of the spiral frame 143, reducing the entry of moisture and better adapting to the high humidity environment;

[0046] When installing the filter 20, the filter 20 is inserted into the inside from the end of the connecting pipe 142 close to the first exhaust pipe 14, so that one end of the filter 20 contacts the fixing ring 1422. Then, the clamping ring 186 is rotated to drive the regulating ring 182 to rotate, so as to drive the clamping rod 184 to drive the pressing plate 185 to move through a plurality of arc-shaped grooves 183, so that the plurality of pressing plates 185 squeeze the air bag 1421, causing the air bag 1421 to deform and then abut against the adjacent end of the filter 20. While limiting the filter 20, one end of the filter 20 is sealed, so as to ensure that the discharged gas is concentrated and filtered through the inside of the filter 20 and then discharged, thereby improving the filtering effect. Then, the rotating rod 177 is rotated to drive the two lead screws 175 to rotate, driving the two ejector rods 176 to move outward in the opposite direction, so as to push the two limiting rings 17 away from each other. The connecting pipe 142 is moved downward to contact the two auxiliary frames 174, and the rotating rod 177 is rotated in the reverse direction to clamp the two limiting rings 17 at both ends of the connecting pipe 142, making the replacement of the filter 20 more convenient and conducive to adapting to the high humidity environment.

[0047] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied to other related technical fields, shall be included in the patent protection scope of the present invention by the same token.

Claims

1. A vacuum pump applicable to a high-humidity environment, comprising an exhaust pipe body (12), an intake pipe body (13) and a filter (20), characterized in that, An exhaust pipe one (14) and an exhaust pipe two (141) are fixedly communicated with the outside of the exhaust pipe body (12). A connecting pipe (142) is slidably connected between the exhaust pipe one (14) and the exhaust pipe two (141). An airbag (1421) for limiting the filter (20) is fixedly connected to the inner wall of the connecting pipe (142). A spiral frame (143) is fixedly connected to the inside of the exhaust pipe two (141).

2. The vacuum pump applicable to a high-humidity environment according to claim 1, wherein: Two limiting shells one (10) and two limiting shells two (11) are arranged outside the exhaust pipe body (12). The two limiting shells one (10) are slidably connected to each other. The limiting shell one (10) can be movably clamped with an adjacent sealing ring one (101). Both the limiting shell one (10) and the limiting shell two (11) can be movably clamped with the exhaust pipe body (12) and the intake pipe body (13). Sealing rings one (101) and sealing strips (102) are fixedly connected to the outside of both the limiting shell one (10) and the limiting shell two (11). Limiting rods (103) are slidably connected to both sides of the limiting rod (103). One end of the limiting rod (103) can be movably clamped with an adjacent limiting shell two (11). A plurality of first springs (104) are fixedly connected between the limiting rod (103) and the limiting shell one (10).

3. The vacuum pump applicable to a high-humidity environment according to claim 1, wherein: A guiding cylinder (144) is fixedly connected between the inner walls of the exhaust pipe two (141). The spiral frame (143) is fixedly connected to the inner wall of the guiding cylinder (144). Both the spiral frame (143) and the guiding cylinder (144) are made of aluminum. A filter screen (145) is fixedly connected between the inner walls of the exhaust pipe two (141).

4. The vacuum pump applicable to a high-humidity environment according to claim 1, characterized in that: A support plate (15) is fixedly sleeved on the outer wall of the exhaust pipe one (14). The exhaust pipe two (141) passes through the support plate (15) and is fixedly connected to it. Two vertical rods (151) are symmetrically and fixedly connected to the top of the support plate (15). Both the two vertical rods (151) pass through the connecting pipe (142) and are slidably connected to it.

5. The vacuum pump applicable to a high-humidity environment according to claim 4, wherein: A clamping seat (16) is arranged between the two limiting shells one (10). The clamping seat (16) is fixedly connected to the support plate (15). Connecting rods (161) are slidably connected to both ends of the clamping seat (16). The connecting rods (161) are fixedly connected to an adjacent limiting shell one (10). A pulling plate (162) is slidably connected to the outer wall of the clamping seat (16). Two second springs (163) are fixedly connected between the pulling plate (162) and the clamping seat (16). Four inserting rods (164) are fixedly connected to the bottom of the pulling plate (162). All the plurality of inserting rods (164) can be movably clamped with an adjacent connecting rod (161).

6. The vacuum pump applicable to a high-humidity environment according to claim 5, wherein: Limit rings (17) are provided on the outer sides of the opposite ends of the first exhaust pipe (14) and the second exhaust pipe (141). Two cross bars (172) are fixedly connected to the outer walls of the first exhaust pipe (14) and the second exhaust pipe (141). The cross bars (172) penetrate through the adjacent limit rings (17) and are slidably connected thereto. A third spring (173) is fixedly connected between the limit rings (17) and the adjacent cross bars (172). A second sealing ring (171) is fixedly embedded in the inner wall of the limit ring (17).

7. The vacuum pump applicable to a high-humidity environment according to claim 6, wherein: Two auxiliary frames (174) are fixedly connected to the top of the support plate (15). A top rod (176) is slidably connected inside the auxiliary frames (174). A lead screw (175) is rotatably connected inside the auxiliary frames (174). The lead screw (175) penetrates through the adjacent top rod (176) and is in threaded connection therewith. A rotating rod (177) is fixedly connected between the two lead screws (175).

8. The vacuum pump applicable to a high-humidity environment according to claim 1, characterized in that: A positioning shell (18) is fixedly sleeved on the outer wall of the connecting pipe (142). A fixing ring (1422) is fixedly connected to the inner wall of the connecting pipe (142). Four sliders (181) are slidably connected inside the positioning shell (18). A regulating ring (182) is rotatably connected between the inner walls of the positioning shell (18). Four arc-shaped grooves (183) are equidistantly formed on one side of the regulating ring (182). A clamping rod (184) is movably clamped inside the arc-shaped groove (183). One end of the clamping rod (184) is fixedly connected to the adjacent slider (181). A pressing plate (185) is fixedly sleeved on the outer wall of the clamping rod (184). The pressing plate (185) penetrates through the connecting pipe (142) and is slidably connected thereto.

9. The vacuum pump applicable to a high-humidity environment according to claim 8, wherein: A clamping ring (186) is rotatably connected to one side of the positioning shell (18). A holding rod (187) is fixedly sleeved inside the clamping ring (186). One end of the holding rod (187) penetrates through the positioning shell (18) and is fixedly connected to the regulating ring (182).

10. A vacuum pump applicable to a high-humidity environment as described in claim 9, characterized in that: A fixing screw (188) is threadedly connected to one side of the positioning shell (18). The fixing screw (188) can penetrate through the holding rod (187) and is movably clamped therewith.

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