Multi-stage turbine type vacuum pump

Abstract

The invention belongs to the technical field of vacuum pumps, and particularly relates to a multistage turbine type vacuum pump which comprises a bottom shell, a top shell is installed at the top end of the bottom shell, air inlet holes are formed in the same ends of the bottom shell and the top shell, air outlet holes are formed in the ends, away from the air inlet holes, of the bottom shell and the top shell, and a driving motor is arranged at the end, away from the air inlet holes, of the bottom shell. A rotating shaft is fixed to the end of a rotating shaft of the driving motor, a plurality of front rotating discs are rotationally connected into the bottom shell and the top shell, the rotating shaft penetrates through the bottom shell and the top shell, the rotating shaft is sleeved with the front rotating discs, a rear rotating disc is arranged on one side of each front rotating disc, and a plurality of first blades are arranged between the front rotating discs and the rear rotating disc at equal intervals; the first blade can be driven to adjust the inclination angle by rotating the rear rotating disc, the air suction amount of the vacuum pump can be adjusted by adjusting the inclination angle, the air suction amount can be increased when large air suction amount is needed, the rear rotating disc can be reversely rotated in daily use to recover to the normal state, and normal use is not affected.

Description

Technical Field

[0001] The invention belongs to the technical field of vacuum pumps, in particular to a multi-stage turbine vacuum pump. Background Art

[0002] A vacuum pump is a device that is often used in industrial production. Vacuum pumps are divided into different types according to their uses. The multi-stage turbine vacuum pump adopts a multi-stage series impeller structure. It compresses the gas step by step through high-speed rotating impellers to achieve high vacuum and high pumping speed. It is suitable for semiconductors, papermaking, chemical industry and other fields.

[0003] A Chinese patent with an existing announcement number of CN118309671B discloses a high-speed turbine vacuum pump, including: a guide cover, a pump shaft is installed in the middle of the guide cover, and a plurality of turbine assemblies with equal spacing and linear distribution are installed on the outside of the pump shaft; the pump shaft is cylindrical, and a plurality of fixed bosses with equal spacing and linear distribution are fixedly sleeved on the outside; a plurality of fixed bosses with equal spacing and fixedly sleeved on the pump shaft, and turbine assemblies are sleeved on the outside of the fixed bosses and the movable bosses. When the pump shaft rotates, the plurality of turbine assemblies can rotate synchronously. When the turbine assembly is disassembled and replaced, the limit stopper at one end of the pump shaft is removed, and the turbine assembly can be disassembled, repaired, replaced, etc.

[0004] During use, the above-mentioned technical solution needs to rotate the turbine inside the deflector shell to extract air. During use, the vacuum pump air speed will be adjusted according to production needs. However, the adjustment process can only be achieved by increasing the speed of the motor. When the demand for pump air volume is high, the air supply demand cannot be met, thereby affecting the production efficiency.

[0005] To this end, the present invention provides a multi-stage turbine vacuum pump. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problems is: a multi-stage turbine vacuum pump described in the present invention comprises a bottom shell, a top shell is installed on the top of the bottom shell, inner channels are opened inside the bottom shell and the top shell, an air inlet is opened at the same end of the bottom shell and the top shell, an air outlet is opened at one end of the bottom shell and the top shell away from the air inlet, a driving motor is arranged at one end of the bottom shell away from the air inlet, a rotating shaft end of the driving motor is fixed with a rotating shaft, a plurality of front turntables are rotatably connected inside the bottom shell and the top shell, the rotating shaft runs through the inside of the bottom shell and the top shell, the front turntable is sleeved on the outside of the rotating shaft, a rear turntable is arranged on one side of the front turntable, a plurality of first blades are arranged at equal intervals between the front turntable and the rear turntable, the first blade is rotatably connected to the rear turntable, a connecting column is fixed on the side of the front turntable close to the rear turntable, a second blade is slidably connected to one side of the first blade, an end of the second blade close to the connecting column is rotatably connected to the outer side of the connecting column, the rotating shaft runs through the inside of the rear turntable and the connecting column, and a locking component is arranged inside the connecting column.

[0008] Preferably, a slide groove is provided on the side of the first blade close to the second blade, a guide plate is fixed on the side of the first blade close to the slide groove, a slide groove is also provided on the side of the second blade close to the guide plate, a guide plate is also fixed on the side of the second blade close to the slide groove, the guide plate of the first blade is slidably connected to the inside of the slide groove of the second blade, and the guide plate of the second blade is slidably connected to the inside of the slide groove of the first blade.

[0009] Preferably, a rotating hole is provided on one side of the connecting column close to the rear turntable, and a rotating ring is fixed on one side of the rear turntable close to the connecting column. The rotating ring is rotatably connected to the inside of the rotating hole, and a plurality of tooth grooves are provided at equal intervals at the top of the inside of the rotating ring. An output gear is provided below the middle of the tooth groove, and the output gear is meshed with the tooth groove. A first motor is installed inside the connecting column, and the end of the rotating shaft of the first motor is fixedly connected to the output gear.

[0010] Preferably, limit blocks are provided on both sides of the tooth groove.

[0011] Preferably, the locking assembly includes a plurality of fixing grooves equidistantly arranged on both sides of the rotating ring, electric telescopic rods are installed on both sides of the connecting column, and a clamping plate is fixed to the end of the electric telescopic rod, which can be engaged with the fixing grooves.

[0012] Preferably, a rotating column is fixed at one end of the rear rotating disk away from the front rotating disk, a plurality of teeth are fixed at equal intervals on the outside of an end of the rotating column close to the first gear, a plurality of first gears are fixed at equal intervals on the outside of the rotating shaft, a supporting sleeve is sleeved on the outside of the rotating column, the supporting sleeve is fixed to the inside of the bottom shell, a supporting column is fixed to the top of the supporting sleeve, a sliding hole is provided inside the supporting column, a lifting column is slidably connected to the inside of the sliding hole, a side of the lifting column away from the rear rotating disk is rotatably connected to the second gear, a second transmission gear is fixed on the side of the second gear away from the support column, the bottom end of the second gear can be meshed and connected with the rotating column, and the bottom end of the second transmission gear can be meshed and connected with the first gear.

[0013] Preferably, three positioning grooves are evenly spaced at one end of the rotating column away from the rear rotating disk, three telescopic holes are evenly spaced inside the first gear, a clamping column is slidably connected inside the telescopic hole, and one end of the clamping column can be engaged with the positioning groove.

[0014] Preferably, a second motor is installed at the top of the support column, a screw is rotatably connected to the sliding interior of the support column, the screw is threadedly connected to the lifting column, and the end of the rotating shaft of the second motor is fixedly connected to the screw.

[0015] Preferably, multiple groups of support shells are fixed at equal intervals on the outside of the rotating shaft, and each group of support shells is provided with three support shells, and the three support shells match the positions of the telescopic holes. The clamping column is slidably connected to the inside of the support shell, and the top of the clamping column is meshed and connected with a first transmission gear, and the first transmission gear is rotatably connected to the inside of the support shell, and the side of the first transmission gear away from the first gear is meshed and connected with a telescopic frame, and the telescopic frame is slidably connected to the inside of the support shell, and both sides of the top of the telescopic frame are rotatably connected to rollers, and a lasso is provided on the outside of the rotating shaft, and the lasso is slidably connected to the inside of the groove body of the roller, and a rotating block is fixed to the end of the second transmission gear away from the second gear, and the top of the lasso is fixedly connected to the rotating block.

[0016] Preferably, a spring is fixed to the top end of the telescopic frame, and the bottom end of the spring is fixedly connected to the supporting shell.

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

[0018] 1. The multi-stage turbine vacuum pump described in the present invention can drive the first blade to adjust the inclination angle by rotating the rear turntable. The suction volume of the vacuum pump can be adjusted by adjusting the inclination angle, and the suction volume can be increased when a larger suction volume is required. In daily use, the rear turntable can be rotated in the opposite direction to return to a normal state without affecting normal use.

[0019] 2. The multi-stage turbine vacuum pump described in the present invention can change the transmission mode between the rotating column and the first gear by controlling the second gear. When a larger suction volume is required, the second gear participates in the transmission between the first gear and the rotating column, which can increase the transmission ratio and increase the rotation speed of the rear turntable, thereby achieving the rotation speed of the rear turntable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 is a stereogram of the present invention;

[0022] Figure 2 It is a schematic diagram of the internal structure of the bottom shell in the present invention;

[0023] Figure 3 It is a schematic diagram of the front turntable structure of the present invention;

[0024] Figure 4 It is a schematic diagram of the rear turntable structure in the present invention;

[0025] Figure 5 is a schematic diagram of the first blade structure in the present invention;

[0026] Figure 6 It is a schematic diagram of the connecting column structure in the present invention;

[0027] Figure 7 is a schematic diagram of the second gear structure in the present invention;

[0028] Figure 8 It is a schematic diagram of the lasso structure in the present invention;

[0029] Fig. 9 It is a schematic diagram of the clamping column structure in the present invention.

[0030] In the figure: 1, bottom shell; 11, top shell; 12, air inlet; 13, air outlet; 14, inner channel; 2, drive motor; 21, rotating shaft; 22, first gear; 221, telescopic hole; 23, support shell; 231, clamping column; 232, first transmission gear; 233, telescopic frame; 234, spring; 235, roller; 24, lasso; 3, front turntable; 31, first blade; 311, second blade; 312, slide groove; 313, Guide plate; 32, rear turntable; 321, swivel; 322, tooth groove; 323, fixing groove; 324, clamping plate; 325, electric telescopic rod; 326, rotating column; 327, positioning groove; 33, connecting column; 331, rotating hole; 34, first motor; 341, output gear; 4, second gear; 41, support sleeve; 42, support column; 421, lifting column; 422, second motor; 423, screw; 43, second transmission gear. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0032] like Figures 1 to 5 As shown, a multi-stage turbine vacuum pump according to an embodiment of the present invention comprises a bottom shell 1, a top shell 11 is installed at the top of the bottom shell 1, inner channels 14 are provided inside the bottom shell 1 and the top shell 11, an air inlet 12 is provided at the same end of the bottom shell 1 and the top shell 11, an air outlet 13 is provided at one end of the bottom shell 1 and the top shell 11 away from the air inlet 12, a driving motor 2 is provided at one end of the bottom shell 1 away from the air inlet 12, a rotating shaft 21 is fixed at the end of the rotating shaft of the driving motor 2, a plurality of front turntables 3 are rotatably connected inside the bottom shell 1 and the top shell 11, and the rotating shaft 21 runs through the bottom shell 1 and the top shell 11. Inside, the front turntable 3 is sleeved on the outside of the rotating shaft 21, a rear turntable 32 is arranged on one side of the front turntable 3, a plurality of first blades 31 are arranged at equal intervals between the front turntable 3 and the rear turntable 32, the first blades 31 are rotatably connected to the rear turntable 32, a connecting column 33 is fixed to the side of the front turntable 3 close to the rear turntable 32, a second blade 311 is slidably connected to one side of the first blade 31, one end of the second blade 311 close to the connecting column 33 is rotatably connected to the outer side of the connecting column 33, the rotating shaft 21 runs through the inside of the rear turntable 32 and the connecting column 33, and a locking component is arranged inside the connecting column 33;

[0033] A vacuum pump is used in industrial production. When in use, the air inlet 12 is connected to the air inlet pipe, and the air outlet 13 is connected to the air outlet pipe. Then, the driving motor 2 is started to drive the rotating shaft 21 to rotate. At this time, the rotating shaft 21 drives multiple rear turntables 32 to rotate, and the rear turntable 32 drives the front turntable 3 and the first blade 31 to rotate. During the rotation, one end of the front turntable 3 inhales gas from the air inlet 12. At this time, the gas enters between the front turntable 3 and the rear turntable 32. Then, during the rotation of the first blade 31, the air flow is promoted. The first blade 31 pushes the gas between the front turntable 3 and the rear turntable 32 into the inner channel 14. At the same time, the front turntable 3 of the next stage inhales gas through the inner channel 14 to accelerate the gas circulation speed inside the inner channel 14. In this way, multi-stage gas transportation can achieve gas pressurization and speed increase.

[0034] When the gas delivery volume is required to be high, the speed of the driving motor 2 needs to be increased, but the working noise is large under high speed. Therefore, the first blade 31 is set to be rotatably connected with the rear turntable 32. When the gas delivery volume needs to be increased, the locking assembly is unlocked, and then the rear turntable 32 is rotated, and the front turntable 3 remains stationary. At this time, the rear turntable 32 can drive the first blade 31 to rotate. At this time, the second blade 311 will be limited by the connecting column 33. After the first blade 31 is driven to rotate, it will tilt. When the first blade 31 tilts, it will be pulled to slide between it and the second blade 311 to form a new blade, and then the locking assembly is locked. The parts are locked again, and the adjustable angles of the first blade 31 and the second blade 311 are between 0° and 30°. When the angle increases, the suction volume will increase, which can be used in the case of short-term high suction volume demand. However, the energy consumption will increase more between 20° and 30°. Therefore, when the suction volume is not high, the rear turntable 32 is reversed and adjusted to the normal angle. In this way, the angles of the first blade 31 and the second blade 311 can be freely adjusted, which can quickly increase the suction volume under special circumstances, and improve the pumping efficiency of the vacuum pump. At the same time, the noise caused by high-speed pumping can be reduced by increasing the pumping volume.

[0035] like Figures 1 to 5 As shown, a slide groove 312 is provided on a side of the first blade 31 close to the second blade 311, a guide plate 313 is fixed on a side of the first blade 31 close to the slide groove 312, a slide groove 312 is also provided on a side of the second blade 311 close to the guide plate 313, a guide plate 313 is also fixed on a side of the second blade 311 close to the slide groove 312, the guide plate 313 of the first blade 31 is slidably connected to the inside of the slide groove 312 of the second blade 311, and the guide plate 313 of the second blade 311 is slidably connected to the inside of the slide groove 312 of the first blade 31;

[0036] During the process of adjusting the angle of the first blade 31 and the second blade 311, it is necessary to pull the first blade 31, and the first blade 31 and the second blade 311 will slide between them. In order to ensure the connection between the first blade 31 and the second blade 311, a slide groove 312 and a guide plate 313 are provided. The guide plate 313 is slidably connected inside the slide groove 312, which can ensure the connection between the first blade 31 and the second blade 311, and at the same time make the first blade 31 and the second blade 311 form a complete surface to prevent air leakage during the vacuum process.

[0037] like Figures 3 to 6As shown, a rotating hole 331 is provided on one side of the connecting column 33 close to the rear rotating disk 32, a rotating ring 321 is fixed on one side of the rear rotating disk 32 close to the connecting column 33, the rotating ring 321 is rotatably connected inside the rotating hole 331, a plurality of tooth grooves 322 are evenly spaced at the top of the rotating ring 321, an output gear 341 is provided below the middle of the tooth groove 322, the output gear 341 is meshed and connected with the tooth groove 322, a first motor 34 is installed inside the connecting column 33, and the end of the rotating shaft of the first motor 34 is fixedly connected with the output gear 341;

[0038] When the angle of the first blade 31 and the second blade 311 needs to be adjusted, the rear turntable 32 needs to be rotated. In order to facilitate the rotation of the rear turntable 32, a first motor 34 is set. When adjusting, the first motor 34 is started to drive the output gear 341 to rotate. The output gear 341 rotates to drive the tooth groove 322. The tooth groove 322 drives the rotating ring 321 to rotate. When the rotating ring 321 rotates, it will drive the rear turntable 32 to rotate. At this time, the angle of the first blade 31 and the second blade 311 can be adjusted.

[0039] like Figure 6 As shown, limit blocks are provided on both sides of the tooth groove 322;

[0040] The limit block can limit the two sides of the tooth groove 322 to block the output gear 341. When the rotating ring 321 rotates more than 30°, the limit block can prevent the rotating ring 321 from continuing to rotate, thereby preventing the angle between the first blade 31 and the second blade 311 from being too large and affecting the air extraction efficiency.

[0041] like Figure 6 As shown, the locking assembly includes a plurality of fixing grooves 323 which are evenly spaced on both sides of the inner side of the rotating ring 321, and electric telescopic rods 325 are installed on both sides of the inner side of the connecting column 33. A clamping plate 324 is fixed to the end of the electric telescopic rod 325, and the clamping plate 324 can be engaged with the fixing groove 323;

[0042] During use, it is necessary to ensure that the front turntable 3 and the rear turntable 32 are in a fixed state. Therefore, a card plate 324 is arranged to be inserted into the inside of the fixing groove 323 during use. At this time, the swivel ring 321 can be fixed to the connecting column 33, so that the front turntable 3 and the rear turntable 32 can be fixed. When the angle of the first blade 31 and the second blade 311 needs to be adjusted, the electric telescopic rod 325 is started to pull the card plate 324 out of the fixing groove 323, and then the adjustment is performed. After the adjustment is completed, the electric telescopic rod 325 is started to push the card plate 324 into the current fixing groove 323, which can fix the swivel ring 321 and the connecting column 33, and the locking state of the swivel ring 321 and the connecting column 33 can be freely controlled.

[0043] like Figures 1 to 8As shown, a rotating column 326 is fixed to one end of the rear rotating disk 32 away from the front rotating disk 3, a plurality of teeth are fixed to the outside of the rotating column 326 at equal intervals at one end close to the first gear 22, a plurality of first gears 22 are fixed to the outside of the rotating shaft 21 at equal intervals, a supporting sleeve 41 is sleeved on the outside of the rotating column 326, the supporting sleeve 41 is fixed to the inside of the bottom shell 1, a supporting column 42 is fixed to the top of the supporting sleeve 41, a sliding hole is provided inside the supporting column 42, a lifting column 421 is slidably connected to the inside of the sliding hole, a side of the lifting column 421 away from the rear rotating disk 32 is rotatably connected to the second gear 4, a side of the second gear 4 away from the supporting column 42 is fixed to the second transmission gear 43, the bottom end of the second gear 4 can be meshed and connected with the rotating column 326, and the bottom end of the second transmission gear 43 can be meshed and connected with the first gear 22;

[0044] When a high air extraction volume is required, a high rotation speed will also increase the air extraction volume. Therefore, when the air extraction volume is to be further increased after the first blade 31 is adjusted to 30°, the lifting column 421 moves downward inside the sliding part of the support column 42, and the lifting column 421 drives the second gear 4 to move downward, and the second gear 4 is meshed with the teeth of the rotating column 326. At the same time, the second transmission gear 43 is meshed with the first gear 22. At this time, the second transmission gear 43 is driven to rotate by the first gear 22, and the second transmission gear 43 drives the rotating column 326 to rotate, which can increase the transmission ratio between the first gear 22 and the rotating column 326, thereby increasing the rotation speed of the rotating column 326, and allowing the rear turntable 32 to drive the first blade 31 to rotate faster, thereby increasing the air extraction volume to a certain extent.

[0045] like Figures 1 to 9 As shown, three positioning grooves 327 are evenly spaced at one end of the rotating column 326 away from the rear rotating disk 32, and three telescopic holes 221 are evenly spaced inside the first gear 22. A clamping column 231 is slidably connected inside the telescopic hole 221, and one end of the clamping column 231 can be engaged with the positioning groove 327;

[0046] When the air extraction volume is not high, the lifting column 421 rises and drives the second gear 4 and the second transmission gear 43 to separate from the rotating column 326 and the first gear 22 respectively. Then the clamping column 231 extends from the inside of the telescopic hole 221, and when the first gear 22 rotates, the clamping column 231 is driven to be inserted into the inside of the positioning groove 327. At this time, the rotating column 326 is connected to the first gear 22, so that the first gear 22 can directly drive the rotating column 326 to rotate, and it is in a normal energy consumption state during daily use.

[0047] like Figures 1 to 7 As shown, a second motor 422 is installed at the top of the support column 42, a screw 423 is rotatably connected to the sliding interior of the support column 42, the screw 423 is threadedly connected to the lifting column 421, and the end of the rotating shaft of the second motor 422 is fixedly connected to the screw 423;

[0048] When the position of the second gear 4 needs to be adjusted, the second motor 422 is started to drive the screw 423 to rotate. At this time, the screw 423 drives the lifting column 421 to rise and fall in the sliding hole of the support column 42, and the connection state of the second gear 4 and the second transmission gear 43 can be switched.

[0049] like Figures 1 to 9 As shown, multiple groups of support shells 23 are fixed at equal intervals on the outside of the rotating shaft 21, and each group of support shells 23 is provided with three support shells, and the three support shells 23 match the positions of the telescopic holes 221. The clamping column 231 is slidably connected to the inside of the support shell 23, and the upper part of the clamping column 231 is meshedly connected with the first transmission gear 232, and the first transmission gear 232 is rotatably connected to the inside of the support shell 23, and the side of the first transmission gear 232 away from the first gear 22 is meshedly connected with a telescopic frame 233, and the telescopic frame 233 is slidably connected to the inside of the supporting shell 23, and the two sides of the top of the telescopic frame 233 are rotatably connected with rollers 235, and the outside of the rotating shaft 21 is sleeved with a lasso 24, and the lasso 24 is slidably connected to the inside of the groove of the roller 235, and a rotating block is fixed to the end of the second transmission gear 43 away from the second gear 4, and the top of the lasso 24 is fixedly connected to the rotating block;

[0050] When it is necessary to make the first gear 22 directly drive the rotating column 326, it is first necessary to lift the second gear 4 and separate it from the rotating column 326. During the lifting process of the second gear 4, the rotating block will be pulled by the second transmission gear 43, and the rotating block will lift the lasso 24 upward. During the lifting process, the lasso 24 will be tightened in the direction of the rotating shaft 21 due to the pulling force. At this time, the pulling force of the lasso 24 drives the roller 235, and the roller 235 pushes the telescopic frame 233 to move into the support shell 23. At this time, the telescopic frame 233 drives the first transmission gear 232 to rotate, and the first transmission gear 232 drives the clamping column 231 to extend from the inside of the support shell 23, thereby completing the switching of the connection state between the second gear 4 and the rotating column 326 and the clamping column 231 and the positioning groove 327. At the same time, when the rotating shaft 21 rotates, the roller 235 will also be driven to rotate, and the roller 235 can rotate within the circle of the lasso 24.

[0051] like Figures 1 to 9 As shown, a spring 234 is fixed to the top of the telescopic frame 233, and the bottom end of the spring 234 is fixedly connected to the support shell 23;

[0052] When the second gear 4 moves downward and engages with the rotating column 326, the rotating block of the second transmission gear 43 will loosen the lasso 24 downward. At this time, the elastic force of the spring 234 can push up the telescopic frame 233, and at the same time, the clamping column 231 is pulled back to the inside of the supporting shell 23 through the first transmission gear 232. The roller 235 pushes the lasso 24 to expand to the initial state, which can realize the automatic adjustment of the connection state between the clamping column 231 and the positioning groove 327.

[0053] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A multi-stage turbine vacuum pump, characterized in that: The invention comprises a bottom shell, a top shell is installed on the top of the bottom shell, inner channels are opened inside the bottom shell and the top shell, an air inlet hole is opened at the same end of the bottom shell and the top shell, an air outlet hole is opened at the end of the bottom shell and the top shell away from the air inlet hole, a driving motor is arranged at the end of the bottom shell away from the air inlet hole, a rotating shaft is fixed at the end of the rotating shaft of the driving motor, a plurality of front turntables are rotatably connected inside the bottom shell and the top shell, the rotating shaft passes through the inside of the bottom shell and the top shell, the front turntable is sleeved on the outside of the rotating shaft, a rear turntable is arranged on one side of the front turntable, a plurality of first blades are arranged at equal intervals between the front turntable and the rear turntable, the first blade is rotatably connected to the rear turntable, a connecting column is fixed on the side of the front turntable close to the rear turntable, a second blade is slidably connected to one side of the first blade, an end of the second blade close to the connecting column is rotatably connected to the outer side of the connecting column, the rotating shaft passes through the inside of the rear turntable and the connecting column, and a locking assembly is arranged inside the connecting column.

2. A multi-stage turbine vacuum pump according to claim 1, characterized in that: A slide groove is provided on the side of the first blade close to the second blade, a guide plate is fixed on the side of the first blade close to the slide groove, a slide groove is also provided on the side of the second blade close to the guide plate, a guide plate is also fixed on the side of the second blade close to the slide groove, the guide plate of the first blade is slidably connected to the inside of the slide groove of the second blade, and the guide plate of the second blade is slidably connected to the inside of the slide groove of the first blade.

3. A multi-stage turbine vacuum pump according to claim 1, characterized in that: A rotating hole is provided on one side of the connecting column close to the rear turntable, and a rotating ring is fixed on one side of the rear turntable close to the connecting column. The rotating ring is rotatably connected to the inside of the rotating hole, and a plurality of tooth grooves are provided at equal intervals on the top of the inside of the rotating ring. An output gear is provided below the middle of the tooth groove, and the output gear is meshed and connected with the tooth groove. A first motor is installed inside the connecting column, and the end of the rotating shaft of the first motor is fixedly connected to the output gear.

4. A multi-stage turbine vacuum pump according to claim 3, characterized in that: Limit blocks are arranged on both sides of the tooth groove.

5. A multi-stage turbine vacuum pump according to claim 3, characterized in that: The locking assembly includes a plurality of fixing grooves which are evenly spaced on both sides of the rotating ring. Electric telescopic rods are installed on both sides of the connecting column. A clamping plate is fixed on the end of the electric telescopic rod, and the clamping plate can be engaged with the fixing groove.

6. A multi-stage turbine vacuum pump according to claim 1, characterized in that: A rotating column is fixed at one end of the rear rotating disk away from the front rotating disk, and a plurality of teeth are fixed at equal intervals on the outside of the rotating column at one end of the rotating column close to the first gear, and a plurality of first gears are fixed at equal intervals on the outside of the rotating shaft, and a supporting sleeve is provided on the outside of the rotating column, and the supporting sleeve is fixed to the inside of the bottom shell, and a supporting column is fixed to the top of the supporting sleeve, and a sliding hole is provided inside the supporting column, and a lifting column is slidably connected to the inside of the sliding hole, and a second gear is rotatably connected to the side of the lifting column away from the rear rotating disk, and a second transmission gear is fixed to the side of the second gear away from the support column, and the bottom end of the second gear can be meshed and connected with the rotating column, and the bottom end of the second transmission gear can be meshed and connected with the first gear.

7. A multi-stage turbine vacuum pump according to claim 6, characterized in that: Three positioning grooves are evenly spaced at one end of the rotating column away from the rear rotating disk, three telescopic holes are evenly spaced inside the first gear, and a clamping column is slidably connected inside the telescopic hole, and one end of the clamping column can be engaged with the positioning groove.

8. A multi-stage turbine vacuum pump according to claim 6, characterized in that: A second motor is installed at the top of the support column, a screw rod is rotatably connected to the sliding interior of the support column, the screw rod is threadedly connected to the lifting column, and the end of the rotating shaft of the second motor is fixedly connected to the screw rod.

9. A multi-stage turbine vacuum pump according to claim 6, characterized in that: Multiple groups of support shells are fixed at equal intervals on the outside of the rotating shaft, and each group of support shells is provided with three support shells, and the three support shells match the positions of the telescopic holes. The clamping column is slidably connected to the inside of the support shell, and the top of the clamping column is meshed and connected with a first transmission gear, and the first transmission gear is rotatably connected to the inside of the support shell, and the side of the first transmission gear away from the first gear is meshed and connected with a telescopic frame, and the telescopic frame is slidably connected to the inside of the supporting shell, and both sides of the top of the telescopic frame are rotatably connected to rollers, and a lasso is provided on the outside of the rotating shaft, and the lasso is slidably connected to the inside of the groove body of the roller, and a rotating block is fixed to the end of the second transmission gear away from the second gear, and the top of the lasso is fixedly connected to the rotating block.

10. A multi-stage turbine vacuum pump according to claim 9, characterized in that: A spring is fixed at the top end of the telescopic frame, and the bottom end of the spring is fixedly connected to the supporting shell.

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