A deformation-resistant disc and a water-cooled energy-saving vacuum pump

Abstract

This invention belongs to the field of water ring vacuum pump technology, specifically a deformation-resistant disc and water ring energy-saving vacuum pump, including a pump body motor. A pump casing is installed at one end of the pump body motor. An impeller is rotatably connected inside the pump casing. A main shaft is fixed inside the impeller. The impeller is located at the lower part of the pump casing. The end of the pump body motor shaft is fixedly connected to one end of the main shaft. A disc is installed at the end of the pump casing away from the pump body motor. An air inlet pipe is fixed on one side of the disc away from the pump casing. An air outlet pipe is provided on one side of the air inlet pipe and fixedly connected to the disc. An exhaust port is opened on one side of the disc, and an air inlet port is opened on the other side of the disc. The exhaust port and air inlet port are respectively located on both sides of the bottom end of the main shaft. By placing water-absorbing cotton inside the connecting shell, the moisture in the gas flowing inside the air outlet pipe can be absorbed. Then, according to the weight of the absorbed moisture, a micro water pump inputs a corresponding weight of water into the pump casing, which can achieve precise water replenishment inside the pump casing.

Description

Technical Field

[0001] This invention belongs to the field of water ring vacuum pump technology, specifically a deformation-resistant disc and water ring energy-saving vacuum pump. Background Technology

[0002] A water ring vacuum pump is a device used to extract gas. It is widely used in chemical, pharmaceutical, and food processing industries. When in use, the water ring vacuum pump compresses air through the gap between the internal water ring and the impeller, and then outputs the compressed air.

[0003] A Chinese patent with publication number CN212898928U discloses a water-cooled energy vacuum pump, which relates to the field of vacuum pump technology. The pump includes a pump body, a drive shaft at one end of the pump body, and a conveying box on the outside of the drive shaft. An impeller is located inside the conveying box at one end of the drive shaft. A filter plate is used to filter impurities and particles in the air.

[0004] The above-mentioned technical solution requires the air to be compressed through the gap between the water ring and the impeller during use. Therefore, the air will contain some moisture when it is output. Long-term operation will lead to insufficient water inside the pump casing, resulting in a gap between the impeller and the water ring, which will prevent the output of gas with sufficient pressure. When adding water to the pump casing, the amount of water consumed cannot be determined. Adding too much water will increase the resistance of the impeller rotation, thereby increasing the consumption of electrical energy.

[0005] Therefore, the present invention provides a deformation-resistant disc and a water-cooled energy-saving vacuum pump. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by this invention to solve its technical problem is as follows: The present invention provides an anti-deformation disc and water-cooled energy-saving vacuum pump, comprising a pump body motor, a pump casing mounted at one end of the pump body motor, an impeller rotatably connected inside the pump casing, a main shaft fixed inside the impeller, the impeller positioned below the pump casing, the end of the pump body motor's rotating shaft fixedly connected to one end of the main shaft, a disc mounted at the end of the pump casing away from the pump body motor, an air inlet pipe fixedly attached to one side of the disc away from the pump casing, an air outlet pipe provided on one side of the air inlet pipe, the air outlet pipe fixedly connected to the disc, an exhaust port opened on one side of the disc's interior, an air inlet port opened on the other side of the disc's interior, and an exhaust port... The air inlet and outlet are respectively located on both sides of the bottom of the main shaft. The exhaust port is connected to the interior of the air outlet pipe, and the air inlet is connected to the interior of the air inlet pipe. A water ring is installed inside the pump casing. A water inlet is installed at the bottom of the disc. A miniature water pump is installed at the end of the disc away from the pump casing. A water supply pipe is fixed to the drain port of the miniature water pump. The other end of the water supply pipe is connected to the water inlet. A connecting box is fixed in the middle of the air outlet pipe. A connecting shell is installed inside the connecting box. A connecting column is fixed at the bottom of the connecting shell. A weighing sensor is installed at the end of the connecting column away from the connecting shell. Water-absorbing cotton is installed inside the connecting shell. A drain pipe is fixed at the bottom of the connecting box. The drain pipe is connected to the interior of the water tank.

[0008] Preferably, the disc has an installation groove inside, a support ring is installed inside the installation groove, and multiple rollers are evenly spaced inside the support ring. The end of the main shaft away from the pump body motor is rotatably connected to the middle of the support ring.

[0009] Preferably, the support ring has locking holes at both the top and bottom, and guide shells at both the top and bottom. A spring is fixed inside the guide shell, and a locking pin is fixed at the other end of the spring. The locking pin is slidably connected inside the guide shell and can engage with the locking hole.

[0010] Preferably, there are three connecting shells, and a rotating shaft is rotatably connected inside the connecting box. The three connecting shells are evenly distributed on the outside of the rotating shaft, and all three connecting shells are fixedly connected to the rotating shaft through a weighing sensor at the bottom.

[0011] Preferably, a geared disc is fixed at the end of the rotating shaft away from the pump casing, and a micro motor is provided below the geared disc. The micro motor is installed on the outside of the connecting box, and a gear is fixed at the end of the rotating shaft of the micro motor. The gear meshes with the geared disc.

[0012] Preferably, three push blocks are fixed at equal intervals on the outer side of the rotating shaft away from the gear plate, and a button is provided below the push block, which is fixedly connected to the connecting box.

[0013] Preferably, baffles are fixed on both sides of the connecting shell, and sealing rings are fixed inside the two connection ports of the connecting box and the air outlet pipe.

[0014] Preferably, the interior of the connecting shell is provided with a flow guide groove, and the bottom end of the flow guide groove is provided with a flow guide hole.

[0015] Preferably, the inside of the connecting box is provided with a flow guide groove, and a sealing gasket is fixed on the side of the flow guide groove near the air outlet pipe. The outer diameter of the sealing gasket is larger than the inner diameter of the flow guide hole.

[0016] Preferably, the connecting shell has an extrusion plate inside, and a push rod is fixed to the top of the extrusion plate. The push rod is slidably connected to the connecting column between the connecting shell and the rotating shaft. A transmission gear is rotatably connected inside the connecting column. A threaded rod is fixed to the bottom of the transmission gear. The bottom of the threaded rod is threadedly connected to the inside of the push rod. A rack is provided on both sides of the transmission gear. The rack is fixedly connected to the inner wall of the connecting box. The rack can mesh with the transmission gear. The two sides of the transmission gear near the rack extend from the inside of the connecting column.

[0017] The beneficial effects of this invention are as follows:

[0018] 1. The present invention provides an anti-deformation disc and a water-cooled energy-saving vacuum pump, which can absorb moisture from the gas flowing inside the outlet pipe by setting water-absorbing cotton inside the connecting shell. Then, according to the weight of the absorbed water, the micro water pump inputs the corresponding weight of water into the pump shell, thereby achieving precise water replenishment inside the pump shell.

[0019] 2. The anti-deformation disc and water-cooled energy-saving vacuum pump of the present invention can support one end of the main shaft through the roller inside the support ring. The support ring is detachable inside the mounting groove, which facilitates the replacement of the support ring and prevents the disc from deforming due to direct contact with the rotating shaft of the main shaft. Attached Figure Description

[0020] The invention will now be further described with reference to the accompanying drawings.

[0021] Figure 1 This is a perspective view of the present invention;

[0022] Figure 2 This is a schematic diagram of the internal structure of the pump casing in this invention;

[0023] Figure 3 This is a schematic diagram of the rear cross-sectional structure of the pump casing in this invention;

[0024] Figure 4 This is a schematic diagram of the disk structure in this invention;

[0025] Figure 5 This is a schematic diagram of the support ring structure in this invention;

[0026] Figure 6 This is a schematic diagram of the internal structure of the connecting box in this invention;

[0027] Figure 7This is a schematic diagram of the internal structure of the connecting shell in this invention;

[0028] Figure 8 This is a schematic diagram of the extrusion plate structure in this invention.

[0029] In the diagram: 1. Pump body and motor; 11. Pump casing; 111. Impeller; 112. Main shaft; 113. Water ring; 12. Disc; 121. Inlet pipe; 122. Outlet pipe; 123. Exhaust port; 124. Inlet; 125. Water inlet; 126. Mounting groove; 13. Support ring; 131. Roller; 132. Locking hole; 133. Guide shell; 134. Locking post; 135. Spring; 2. Connecting box; 21. Connecting shell; 2 11. Flow guide channel; 212. Flow guide hole; 213. Baffle plate; 22. Rotating shaft; 221. Push block; 222. Button; 223. Gear plate; 224. Micro motor; 23. Drain pipe; 24. Sealing ring; 241. Flow guide groove; 242. Sealing gasket; 25. Extrusion plate; 251. Push rod; 252. Threaded rod; 253. Transmission gear; 254. Rack; 3. Water tank; 31. Micro water pump; 32. Water supply pipe. Detailed Implementation

[0030] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0031] like Figures 1 to 6As shown in the embodiment of the present invention, an anti-deformation disc and water-cooled energy-saving vacuum pump includes a pump body motor 1. A pump housing 11 is installed at one end of the pump body motor 1. An impeller 111 is rotatably connected inside the pump housing 11. A main shaft 112 is fixed inside the impeller 111. The impeller 111 is located at the lower part of the pump housing 11. The end of the rotating shaft of the pump body motor 1 is fixedly connected to one end of the main shaft 112. A disc 12 is installed at the end of the pump housing 11 away from the pump body motor 1. An air inlet pipe 121 is fixed on one side of the disc 12 away from the pump housing 11. An air outlet pipe 122 is provided on one side of the air inlet pipe 121 and is fixedly connected to the disc 12. An exhaust port 123 is opened on one side of the interior of the disc 12, and an air inlet 124 is opened on the other side of the interior of the disc 12. The exhaust port 123 and the air inlet 124 are separate. The exhaust port 123 is connected to the interior of the air outlet pipe 122, and the air inlet 124 is connected to the interior of the air inlet pipe 121. A water ring 113 is provided inside the pump housing 11. A water inlet 125 is provided at the bottom of the disc 12. A micro water pump 31 is provided at the end of the disc 12 away from the pump housing 11. A water supply pipe 32 is fixed to the drain port of the micro water pump 31. The other end of the water supply pipe 32 is connected to the water inlet 125. A connecting box 2 is fixed in the middle of the air outlet pipe 122. A connecting shell 21 is provided inside the connecting box 2. A connecting column is fixed at the bottom of the connecting shell 21. A weighing sensor is installed at the end of the connecting column away from the connecting shell 21. Water-absorbing cotton is provided inside the connecting shell 21. A drain pipe 23 is fixed at the bottom of the connecting box 2. The drain pipe 23 is connected to the interior of the water tank 3.

[0032] In industrial production and processing, gas transportation is often required, which is where water ring vacuum pumps are used. During operation, the inlet pipe 121 is connected to the intake pipe, and the outlet pipe 122 is connected to the exhaust pipe. Water is then added to the water tank 3, and the micro water pump 31 is started, supplying water through the water pipe 32 to the inlet 125. The inlet 125 delivers water into the pump casing 11. Once sufficient water is injected into the pump casing 11, the micro water pump 31 stops operating. Then, the pump motor 1 is started, driving the main shaft 112 to rotate. The main shaft 112 drives the impeller 111 to rotate. The rotation of the impeller 111 generates centrifugal force, throwing the water below the pump casing 11 to the surrounding area until a water ring 113 is formed. Figure 3As shown, the lower inner side of the water ring 113 is tangent to the bottom end of the main shaft 112, and the upper inner side of the water ring 113 is tangent to the impeller 111. A small part of the impeller 111 is inserted into the interior of the water ring 113, which forms a crescent-shaped cavity inside the water ring 113. The crescent-shaped cavity is divided into multiple chambers by the blades of the impeller 111. When the impeller 111 rotates, the chamber passes the position of the air inlet 124. At this time, the air inlet 124 can input gas into the interior of the chamber. The impeller 111 rotates to transport the air in the chamber. When the impeller 111 drives the chamber with gas to rotate 180°, the shape of the water ring 113 will reduce the volume of the chamber. At this time, the gas inside the chamber is compressed. Then, after the impeller 111 drives the chamber to rotate to the position of the exhaust port 123, the gas in the chamber will be transported to the interior of the exhaust pipe 122 through the exhaust port 123. This reciprocating operation can realize the pumping of air.

[0033] However, during this process, the water ring 113 will come into contact with the gas. When the gas is discharged, it will carry away the water. If too much water is discharged, a gap will be generated between the water ring 113 and the outer end of the impeller 111. At this time, the air in multiple chambers will communicate with each other, which will eventually lead to a decrease in the gas pressure entering the exhaust port 123, affecting the conveying efficiency. Moreover, when actively replenishing water, it is difficult to control the amount of water replenished. When the amount of water in the water ring 113 is too large, the contact area between the impeller 111 and the water ring 113 will increase, which will lead to an increase in the resistance of the impeller 111 rotation, resulting in an increase in the energy consumption when the pump motor 1 rotates.

[0034] Therefore, a connecting box 2 is fixed inside the air outlet pipe 122. The interior of the connecting box 2 is connected through a connecting shell 21. The absorbent cotton inside the connecting shell 21 can absorb the moisture inside the gas discharged from the air outlet pipe 122. At this time, the absorbent cotton inside the connecting shell 21 will gradually become heavier due to water absorption. The weighing sensor monitors the weight in real time. When the weight reaches the preset value, the micro water pump 31 is started to replenish a certain amount of water into the pump shell 11. The amount of water replenished is determined by conducting experiments before use. The total weight added to the absorbent cotton and the weight of the gas that is not absorbed by the absorbent cotton can make the micro water pump 31 replenish the amount of water into the pump shell 11 more accurately, reducing the resistance of the impeller 111 and the power consumption of the pump motor 1.

[0035] like Figures 1 to 5 As shown, the inside of the disc 12 is provided with an installation groove 126, and a support ring 13 is installed inside the installation groove 126. Multiple rollers 131 are equally spaced inside the support ring 13. The end of the main shaft 112 away from the pump body motor 1 is rotatably connected to the middle of the support ring 13.

[0036] When the main shaft 112 rotates, its end rotates inside the support ring 13. The roller 131 can reduce the friction between the support ring 13 and the end of the main shaft 112. During use, the support ring 13 can support the main shaft 112. If the support ring 13 is damaged, it can be removed from the mounting groove 126 and replaced. This can prevent the end of the main shaft 112 from directly contacting the disc 12, which would cause the disc 12 to deform. At the same time, the absorbed water can be input from the inside of the connecting box 2 into the water tank 3 through the drain pipe 23, reducing water loss.

[0037] like Figures 1 to 5 As shown, the top and bottom ends of the support ring 13 are provided with locking holes 132, and the top and bottom ends of the support ring 13 are provided with guide shells 133. A spring 135 is fixed inside the guide shell 133, and a locking post 134 is fixed at the other end of the spring 135. The locking post 134 is slidably connected inside the guide shell 133 and can engage with the locking hole 132.

[0038] When the support ring 13 needs to be replaced, the connecting plate of the locking pin 134 is engaged. At this time, the connecting plate causes the locking pin 134 to separate from the inside of the locking hole 132. Then the support ring 13 can be taken out from the inside of the mounting groove 126. Then the new support ring 13 is inserted into the inside of the mounting groove 126. At this time, the spring 135 pushes the locking pin 134 into the inside of the locking hole 132, which can fix the support ring 13 inside the mounting groove 126. At this time, the replacement of the support ring 13 can be completed, making it easier to replace the support ring 13 and preventing the disc 12 from deforming.

[0039] like Figures 1 to 7 As shown, there are three connecting shells 21. A rotating shaft 22 is rotatably connected inside the connecting box 2. The three connecting shells 21 are evenly distributed on the outside of the rotating shaft 22. All three connecting shells 21 are fixedly connected to the rotating shaft 22 through a weighing sensor at the bottom.

[0040] Once the absorbent cotton inside the connecting shell 21 reaches the expected weight, it will affect the flow of gas inside the vent pipe 122. At this time, the rotating shaft 22 will rotate, which will drive the connecting shell 21 to rotate. When the rotating shaft 22 rotates, it will cause the three connecting shells 21 to switch their positions. At this time, the connecting shell 21 used to connect the vent pipe 122 can be rotated to the bottom, and the non-absorbent connecting shell 21 can be switched to the connection point of the vent pipe 122. This can prevent the absorbent cotton from affecting the gas flow of the vent pipe 122 after absorbing water.

[0041] like Figures 1 to 6 As shown, a geared disc 223 is fixed at one end of the rotating shaft 22 away from the pump housing 11. A micro motor 224 is arranged below the geared disc 223. The micro motor 224 is installed on the outside of the connecting box 2. A gear is fixed at the end of the rotating shaft of the micro motor 224, and the gear meshes with the geared disc 223.

[0042] When the rotating shaft 22 needs to rotate, the micro motor 224 is started to rotate, which drives the gear disk 223 to rotate. The gear disk 223 drives the rotating shaft 22 to rotate, which makes it easier to switch the position of the connecting shell 21.

[0043] like Figures 1 to 6 As shown, three push blocks 221 are fixed at equal intervals on the outer side of the rotating shaft 22 away from the gear plate 223. A button 222 is provided below the push block 221, and the button 222 is fixedly connected to the connecting box 2.

[0044] When the connecting shell 21 rotates, the rotating shaft 22 will simultaneously drive the push block 221 to rotate. At this time, the push block 221 will rotate to the position of the button 222, and the push block 221 will press the button 222. When pressed, the micro water pump 31 will be started to replenish water to the inside of the pump shell 11, and the rotation of the micro motor 224 will be stopped, thus realizing automatic water replenishment.

[0045] like Figures 1 to 7 As shown, baffles 213 are fixed on both sides of the connecting shell 21, and sealing rings 24 are fixed inside the two connecting ports of the connecting box 2 and the air outlet pipe 122.

[0046] When the absorbent cotton inside the connecting shell 21 absorbs water, the baffle plate 213 can retain the water overflowing from the absorbent cotton inside the connecting shell 21. At the same time, the sealing ring 24 can contact the baffle plate 213 to seal the connection between the connecting shell 21 and the air outlet pipe 122, preventing air leakage when the air outlet pipe 122 exhausts air, which would result in insufficient pressure.

[0047] like Figures 1 to 7 As shown, a flow guide groove 211 is provided inside the connecting shell 21, and a flow guide hole 212 is provided at the bottom end of the flow guide groove 211.

[0048] After absorbing water, the absorbent cotton moves to the bottom of the connecting box 2 along with the connecting shell 21. The water in the absorbent cotton is guided by the guide groove 211. Then the guide groove 211 guides the water into the interior of the guide hole 212. The guide hole 212 can drain the water into the interior of the connecting box 2 for easy drainage.

[0049] like Figures 1 to 7 As shown, the inside of the connecting box 2 is provided with a flow guide groove 241. A sealing gasket 242 is fixed on the side of the flow guide groove 241 near the air outlet pipe 122. The outer diameter of the sealing gasket 242 is larger than the inner diameter of the flow guide hole 212.

[0050] When the water from the absorbent cotton is drained into the interior of the connecting box 2, the guide groove 241 will guide the flow. At the same time, in order to prevent air leakage from the guide hole 212 during use, a sealing gasket 242 is provided. When the connecting shell 21 is rotated to the connection port of the air outlet pipe 122, the sealing gasket 242 will block the guide hole 212, thus preventing air leakage from the guide hole 212.

[0051] like Figures 1 to 8 As shown, a pressing plate 25 is provided inside the connecting shell 21. A push rod 251 is fixed to the top of the pressing plate 25. The push rod 251 is slidably connected to the connecting column between the connecting shell 21 and the rotating shaft 22. A transmission gear 253 is rotatably connected inside the connecting column. A threaded rod 252 is fixed to the bottom end of the transmission gear 253. The bottom end of the threaded rod 252 is threadedly connected to the inside of the push rod 251. A rack 254 is provided on both sides of the transmission gear 253. The rack 254 is fixedly connected to the inner wall of the connecting box 2. The rack 254 can mesh with the transmission gear 253. The two sides of the transmission gear 253 near the rack 254 extend out from the inside of the connecting column.

[0052] When the absorbent cotton inside the connecting shell 21 drains water, a squeezing plate 25 is installed to make the drainage speed faster. When the connecting shell 21 moves downward from the connection port of the air outlet 122, the transmission gear 253 will mesh with the first rack 254. At this time, the transmission gear 253 drives the threaded rod 252 to rotate, which can drive the push rod 251 to extend out from the connecting post of the connecting shell 21. The push rod 251 pushes the squeezing plate 25 to squeeze the absorbent cotton, which can squeeze out the water in the absorbent cotton. Then, when the rotating shaft 22 drives the connecting shell 21 to continue to move, the transmission gear 253 will separate from the first rack 254 and then mesh with the other rack 254. The second rack 254 can drive the transmission gear 253 to rotate in the opposite direction. At this time, the squeezing plate 25 can be driven back to the initial position, realizing the automatic squeezing out of the water in the absorbent cotton.

[0053] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A water-cooled energy-saving vacuum pump, characterized in that: The system includes a pump body motor (1), a pump casing (11) mounted on one end of the pump body motor (1), an impeller (111) rotatably connected inside the pump casing (11), a main shaft (112) fixed inside the impeller (111), the impeller (111) being located at the bottom inside the pump casing (11), the end of the shaft of the pump body motor (1) being fixedly connected to one end of the main shaft (112), and a disc (12) mounted on the end of the pump casing (11) away from the pump body motor (1). An air inlet pipe (121) is fixed on one side of the disc (12) away from the pump housing (11). An air outlet pipe (122) is provided on one side of the air inlet pipe (121). The air outlet pipe (122) is fixedly connected to the disc (12). An exhaust port (123) is provided on one side of the interior of the disc (12), and an air inlet port (124) is provided on the other side of the interior of the disc (12). The exhaust port (123) and the air inlet port (124) are respectively located at the bottom end of the main shaft (112). On both sides, the exhaust port (123) is connected to the interior of the air outlet pipe (122), and the air inlet (124) is connected to the interior of the air inlet pipe (121). A water ring (113) is provided inside the pump casing (11). A water inlet (125) is provided at the bottom of the disc (12). A miniature water pump (31) is provided at one end of the disc (12) away from the pump casing (11). A water delivery pipe (32) is fixed to the drain outlet of the miniature water pump (31). The other end of the water delivery pipe (32) The end is connected to the inlet (125), and the middle of the outlet pipe (122) is fixed with a connecting box (2). The connecting box (2) is equipped with a connecting shell (21). The bottom end of the connecting shell (21) is fixed with a connecting column. The end of the connecting column away from the connecting shell (21) is equipped with a weighing sensor. The inside of the connecting shell (21) is equipped with absorbent cotton. The bottom end of the connecting box (2) is fixed with a drain pipe (23). The drain pipe (23) is connected to the inside of the water tank (3). There are three connecting shells (21). The connecting box (2) is rotatably connected to the shaft (22). The three connecting shells (21) are evenly distributed on the outside of the shaft (22). The three connecting shells (21) are fixedly connected to the shaft (22) through the weighing sensor at the bottom. A gear plate (223) is fixed at one end of the shaft (22) away from the pump casing (11). A micro motor (224) is provided below the gear plate (223). The micro motor (224) is installed on the outside of the connecting box (2). A gear is fixed at the end of the shaft of the micro motor (224). The gear meshes with the gear plate (223). Three push blocks (221) are fixed at equal intervals on the outer side of the rotating shaft (22) away from the gear plate (223). A button (222) is provided below the push block (221), and the button (222) is fixedly connected to the connecting box (2). Both sides of the connecting shell (21) are fixed with baffles (213), and the two connecting ports of the connecting box (2) and the air outlet pipe (122) are fixed with sealing rings (24). The interior of the connecting shell (21) is provided with a flow guide groove (211), and the bottom end of the flow guide groove (211) is provided with a flow guide hole (212). The inside of the connecting box (2) is provided with a flow guide groove (241). A sealing gasket (242) is fixed on the side of the flow guide groove (241) near the air outlet pipe (122). The outer diameter of the sealing gasket (242) is larger than the inner diameter of the flow guide hole (212). An extrusion plate (25) is provided inside the connecting shell (21). A push rod (251) is fixed at the top of the extrusion plate (25). The push rod (251) is slidably connected in the connecting column between the connecting shell (21) and the rotating shaft (22). A transmission gear (253) is rotatably connected inside the connecting column. A threaded rod (252) is fixed at the bottom of the transmission gear (253). The bottom of the threaded rod (252) is threadedly connected to the inside of the push rod (251). A rack (254) is provided on both sides of the transmission gear (253). The rack (254) is fixedly connected to the inner wall of the connecting box (2). The rack (254) can mesh with the transmission gear (253). The two sides of the transmission gear (253) near the rack (254) extend from the inside of the connecting column.

2. The water-cooled energy-saving vacuum pump according to claim 1, characterized in that: The disc (12) has an installation groove (126) inside, and a support ring (13) is installed inside the installation groove (126). Multiple rollers (131) are evenly spaced inside the support ring (13). The end of the main shaft (112) away from the pump body motor (1) is rotatably connected to the middle of the support ring (13).

3. The water-cooled energy-saving vacuum pump according to claim 2, characterized in that: The top and bottom ends of the support ring (13) are provided with locking holes (132), and the top and bottom ends of the support ring (13) are provided with guide shells (133). A spring (135) is fixed inside the guide shell (133), and a locking post (134) is fixed at the other end of the spring (135). The locking post (134) is slidably connected inside the guide shell (133), and the locking post (134) can engage with the locking hole (132).

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