An energy-saving direct-drive high-speed turbine vacuum pump

Abstract

This invention discloses an energy-saving direct-drive high-speed turbine vacuum pump, relating to the field of energy-saving vacuum pumps. It solves the problem of existing direct-drive high-speed turbine vacuum pumps having difficulty in flexibly controlling the impeller rotation state according to needs, resulting in energy consumption and waste. The pump includes a body, a drive mechanism, a first volute, and a second volute. The drive mechanism includes a drive shaft, a first impeller, a second impeller, a control component, and a transmission component. This invention can control the drive shaft to rotate the first impeller for suction when the required suction intensity is relatively low. When high-intensity suction is required, the control component connects the input end of the second volute to the output end of the first volute, and the transmission component operates in conjunction, causing the second impeller to engage with the outer wall of the drive shaft. The drive shaft synchronously drives the first and second impellers to rotate for suction, inputting the accelerated fluid in the first volute into the second volute for secondary acceleration, thus increasing the suction intensity.

Description

Technical Field

[0001] This invention relates to the field of energy-saving vacuum pump technology, specifically to an energy-saving direct-drive high-speed turbine vacuum pump. Background Technology

[0002] A turbine vacuum pump is a vacuum-generating device that relies on a high-speed rotating centrifugal impeller to perform work on gas. The gas is drawn in and discharged from the volute outlet. Due to its advantages such as not requiring working fluid, saving electricity and water, and recovering outlet energy, it has been widely used in papermaking, chemical and other fields. A direct-drive high-speed turbine vacuum pump is a device that achieves a vacuum effect by directly driving the impeller to rotate through the output of a high-speed motor.

[0003] Existing direct-drive high-speed turbine vacuum pumps have a relatively fixed number of volutes. In use, they typically drive one or more sets of impellers to rotate simultaneously via a high-speed motor to pump fluid. However, due to different usage scenarios, the required pumping intensity varies. Existing turbine vacuum pumps cannot flexibly adjust the operating state of multiple sets of impellers according to the required pumping intensity during motor rotation. This results in the equipment being unable to reduce the number of driven impellers when operating at low power, leading to unnecessary energy waste. Summary of the Invention

[0004] The purpose of this invention is to provide an energy-saving direct-drive high-speed turbine vacuum pump that allows for flexible control of the number of impellers, improves operational flexibility, and reduces energy waste, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an energy-saving direct-drive high-speed turbine vacuum pump, comprising a body and a drive mechanism. A first volute and a second volute are fixedly connected to the body. The drive mechanism includes a drive shaft mounted on the body. A first impeller is disposed within the first volute, and a second impeller is disposed within the second volute. The first impeller is coaxially and fixedly connected to the drive shaft. The drive shaft passes through the second impeller and does not contact the inner wall of the second impeller. The body is provided with a control component for controlling the communication state between the input end of the second volute and the output end of the first volute. The body is also provided with a transmission component for controlling the transmission connection state between the second impeller and the drive shaft. The drive mechanism can achieve relatively low required suction intensity by using the drive shaft... The drive shaft drives the first impeller to rotate, achieving a suction operation. When high-intensity suction is required, the input end of the second volute is connected to the output end of the first volute via the control component. During the connection process, the transmission component operates in conjunction, causing the second impeller to engage with the outer wall of the drive shaft. The drive shaft synchronously drives the first and second impellers to rotate and perform suction, and the fluid accelerated in the first volute is input into the second volute for secondary acceleration, increasing the suction intensity. When the control component disconnects the connection between the first and second volutes, there is no friction between the drive shaft and the second impeller during rotation, reducing energy consumption, facilitating flexible control of the number of operating impellers, improving operational flexibility, and reducing energy waste.

[0006] Preferably, the transmission component includes a fixed disk fixedly mounted on the side of the second volute, the second impeller being coaxially rotatably connected to the side of the fixed disk, the drive shaft passing through the fixed disk and rotatably connected to the fixed disk, the outer wall of the drive shaft having a plurality of sets of helical tooth grooves evenly formed, the second impeller having a first sliding groove formed inside, a first slider being slidably connected inside the first sliding groove, the first slider having a helical tooth block fixedly connected to it capable of interlocking with the helical tooth groove, and the second impeller having a drive component for controlling the sliding state of the first slider, facilitating control of the transmission connection state between the second impeller and the drive shaft.

[0007] Preferably, the driving component includes multiple sets of second sliders installed inside the second impeller. The second impeller has a second groove, and the second sliders are slidably connected to the inner wall of the second groove. A first tension spring is fixedly connected to the first slider and fixedly connected to the first groove. A first spring is fixedly connected to the side of the second slider and fixedly connected to the second groove. The first slider has an inclined surface that can slide and fit against the second slider. The fixed plate has a pusher for controlling the sliding state of the second slider, which facilitates the control of the sliding state of the first slider.

[0008] Preferably, the pushing component includes a first magnetic ring installed in the fixed disk, a first annular groove is formed in the fixed disk, the first magnetic ring is slidably connected to the inner wall of the first annular groove in the horizontal direction, a second annular groove is formed in the second impeller, a second magnetic ring is slidably connected in the second annular groove in the horizontal direction, multiple sets of second sliders are fixedly connected to the second magnetic ring, the side of the second magnetic ring facing the first magnetic ring is magnetically repelled by the first magnetic ring, and the fixed disk is provided with a moving component for controlling the moving state of the first magnetic ring, so as to facilitate the control of the sliding state of the second slider.

[0009] Preferably, the movable component includes multiple sets of third sliders fixedly installed on the side of the first magnetic ring. A storage cavity is provided in the fixed disk for storing hydraulic oil. Multiple sets of third sliding grooves are provided in the fixed disk. The two ends of the third sliding grooves are respectively connected to the storage cavity and the first annular groove. The third slider is slidably connected to the inner wall of the third sliding groove. A second tension spring is fixedly connected to the end of the third slider away from the first magnetic ring and fixedly connected to the inner wall of the storage cavity. The control component can control the hydraulic pressure inside the storage cavity during the adjustment process, which facilitates the control of the movement state of the first magnetic ring.

[0010] Preferably, the control component includes a first output pipe mounted on the first volute, a bent pipe fixedly connected to the side of the second volute away from the fixed disk, a storage pipe fixedly connected to the outer wall of the bent pipe, a sleeve connecting pipe movably sleeved on the outer wall of the bent pipe, the sleeve connecting pipe movably sleeved with the inner wall of the storage pipe, a connecting pipe communicating with the storage pipe, one end of the connecting pipe being fixedly connected to the fixed disk and communicating with the storage cavity, and a connector for communicating with the first output pipe on the sleeve connecting pipe, so as to facilitate control of the communication state between the input end of the second volute and the output end of the first volute.

[0011] Preferably, the connector includes a delivery pipe connected to one end of the sleeve, a threaded pipe rotatably connected to the end of the delivery pipe away from the sleeve, the threaded pipe being threaded to the inner wall of the first output pipe, and a second spring fixedly connected to the end of the sleeve away from the delivery pipe, the second spring being fixedly connected to the storage pipe, facilitating the connection of the sleeve to the first output pipe.

[0012] Preferably, the first volute has an input port at the end away from the second volute, the second volute has a second output pipe connected to its side, and a drive motor is fixedly connected to the body. The output end of the drive motor is coaxially fixedly connected to one end of the drive shaft, which facilitates the driving of the drive shaft and the delivery of airflow.

[0013] Preferably, a fixing ring is fixedly connected inside the first annular groove, and the fixing ring is used to separate the first magnetic ring and the second magnetic ring.

[0014] Preferably, an installation tube is fixedly connected to the side of the first volute, the installation tube is fixedly connected to the side of the bend, and the drive shaft passes through the bend and the installation tube and is rotatably connected to the inner wall of the installation tube, so that the outer wall of the drive shaft can be wrapped, so that during suction, the external airflow will not seep into the second volute through the connection between the drive shaft and the bend.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] This invention provides an energy-saving direct-drive high-speed turbine vacuum pump, solving the problem of existing direct-drive high-speed turbine vacuum pumps where it is difficult to flexibly control the impeller rotation state according to needs, resulting in energy consumption and waste. This device can control the drive shaft to rotate the first impeller when the required suction intensity is relatively low, achieving suction operation. When high-intensity suction is required, the input end of the second volute is connected to the output end of the first volute via a control component. During the connection process, the transmission component operates, causing the second impeller to engage with the outer wall of the drive shaft. The drive shaft synchronously drives the first and second impellers to rotate and perform suction, and the fluid accelerated in the first volute is input into the second volute for secondary acceleration, increasing the suction intensity. When the control component disconnects the connection between the first and second volutes, there is no friction between the drive shaft and the second impeller during rotation, reducing energy loss and achieving energy saving. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a partial structural diagram of the drive mechanism of the present invention;

[0019] Figure 3 This is a partial structural diagram of the control component of the present invention;

[0020] Figure 4 This is a partial structural cross-sectional view of the control component of the present invention;

[0021] Figure 5 for Figure 4 Enlarged view of region A in the middle;

[0022] Figure 6 This is a partial structural diagram of the transmission component of the present invention;

[0023] Figure 7 This is a partial structural diagram of the pusher component of the present invention;

[0024] Figure 8 for Figure 7 Enlarged view of region B in the middle;

[0025] Figure 9 This is a partial cross-sectional view of the pushing component of the present invention;

[0026] Figure 10 for Figure 9 Enlarged view of region C;

[0027] Figure 11 for Figure 9 Enlarged view of region D in the middle.

[0028] In the diagram: 1. Body; 2. First volute; 3. Second volute; 4. Drive shaft; 5. First impeller; 6. Second impeller; 7. Fixed disc; 8. Helical tooth groove; 9. First slide groove; 10. First slider; 11. Helical tooth block; 12. Second slider; 13. Second slide groove; 14. First tension spring; 15. First spring; 16. Inclined surface; 17. First magnetic ring; 18. First annular groove; 19. Second annular groove; 20. Second magnetic ring; 21. Third slider; 22. Storage cavity; 23. Third slide groove; 24. Second tension spring; 25. First output pipe; 26. Bend pipe; 27. Storage pipe; 28. Sleeve pipe; 29. ​​Connecting pipe; 30. Conveying pipe; 31. Threaded pipe; 32. Second spring; 33. Input port; 34. Second output pipe; 35. Drive motor; 36. Fixed ring; 37. Mounting pipe. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Example 1: Please refer to Figures 1-11The diagram illustrates an energy-saving direct-drive high-speed turbine vacuum pump, comprising a body 1 and a drive mechanism. A first volute 2 and a second volute 3 are fixedly connected to the body 1. The drive mechanism includes a drive shaft 4 mounted on the body 1. A drive motor 35 (preferably a YYHS-40 model) is fixedly connected to the body 1. The output end of the drive motor 35 is coaxially and fixedly connected to one end of the drive shaft 4. A first impeller 5 is housed within the first volute 2, and a second impeller 6 is housed within the second volute 3. The first impeller 5 is coaxially and fixedly connected to the drive shaft 4. The drive shaft 4 passes through the second impeller 6 but does not contact the inner wall of the second impeller 6. The body 1 is equipped with a control component for controlling the connection between the input end of the second volute 3 and the output end of the first volute 2. The body 1 is also equipped with a control component for controlling the connection between the second impeller 6 and the drive shaft 4. The transmission components connected between the drive shafts 4 enable the drive mechanism to rotate the first impeller 5 when the required suction intensity is relatively low, thus achieving suction operation. When high-intensity suction is required, the input end of the second volute 3 is connected to the output end of the first volute 2 via the control component. During the connection process, the transmission components operate in conjunction, causing the second impeller 6 to engage with the outer wall of the drive shaft 4. The drive shaft 4 synchronously drives the first impeller 5 and the second impeller 6 to rotate and perform suction, and the fluid accelerated in the first volute 2 is input into the second volute 3 for secondary acceleration, increasing the suction intensity. When the control component disconnects the connection between the first volute 2 and the second volute 3, there is no friction between the rotation of the drive shaft 4 and the second impeller 6, reducing energy consumption.

[0031] In this embodiment, the device can control the drive shaft 4 to rotate the first impeller 5 when the required suction intensity is relatively low, thereby achieving the suction operation. When high-intensity suction is required, the input end of the second volute 3 is connected to the output end of the first volute 2 through the control component. During the connection process, the transmission component is activated, causing the second impeller 6 to engage with the outer wall of the drive shaft 4. The drive shaft 4 synchronously drives the first impeller 5 and the second impeller 6 to rotate and perform suction, and the accelerated fluid in the first volute 2 is input into the second volute 3 for secondary acceleration, thereby increasing the suction intensity. When the control component disconnects the connection between the first volute 2 and the second volute 3, there is no friction between the drive shaft 4 and the second impeller 6 during the rotation process, reducing energy loss and achieving energy saving.

[0032] Example 2: Please refer to Figures 2-11This embodiment further illustrates Embodiment 1. The transmission component shown in the figure includes a fixed disk 7 fixedly installed on the side of the second volute 3. The second impeller 6 is coaxially rotatably connected to the side of the fixed disk 7. The drive shaft 4 passes through the fixed disk 7 and is rotatably connected to the fixed disk 7. Multiple sets of helical tooth grooves 8 are evenly opened on the outer wall of the drive shaft 4. A first sliding groove 9 is opened in the second impeller 6. A first slider 10 is slidably connected in the first sliding groove 9. A helical tooth block 11 that can be inserted into the helical tooth groove 8 is fixedly connected on the first slider 10. The cross sections of the helical tooth block 11 and the helical tooth groove 8 are both right-angled triangles. A drive component for controlling the sliding state of the first slider 10 is provided in the second impeller 6.

[0033] The driving component includes multiple sets of second sliders 12 installed in the second impeller 6. The second impeller 6 has a second slide groove 13. The second sliders 12 are slidably connected to the inner wall of the second slide groove 13. A first tension spring 14 is fixedly connected to the first slider 10 and fixedly connected to the first slide groove 9. A first spring 15 is fixedly connected to the side of the second slider 12 and fixedly connected to the second slide groove 13. The first slider 10 has an inclined surface 16 that can slide and fit with the second slider 12. The fixed plate 7 has a pusher for controlling the sliding state of the second slider 12.

[0034] The pushing component includes a first magnetic ring 17 installed in a fixed disk 7. A first annular groove 18 is formed in the fixed disk 7. The first magnetic ring 17 is slidably connected to the inner wall of the first annular groove 18 in the horizontal direction. A second annular groove 19 is formed in the second impeller 6. A second magnetic ring 20 is slidably connected in the second annular groove 19 in the horizontal direction. Multiple sets of second sliders 12 are fixedly connected to the second magnetic ring 20. The side of the second magnetic ring 20 facing the first magnetic ring 17 is magnetically repelled by the first magnetic ring 17. A fixed ring 36 is fixedly connected in the first annular groove 18. The fixed ring 36 is used to separate the first magnetic ring 17 and the second magnetic ring 20. A moving component is provided in the fixed disk 7 to control the movement state of the first magnetic ring 17.

[0035] The moving component includes multiple sets of third sliders 21 fixedly installed on the side of the first magnetic ring 17. A storage cavity 22 is provided in the fixed disk 7 for storing hydraulic oil. Multiple sets of third sliding grooves 23 are provided in the fixed disk 7. The two ends of the third sliding grooves 23 are respectively connected to the storage cavity 22 and the first annular groove 18. The third sliders 21 are slidably connected to the inner wall of the third sliding grooves 23. The end of the third slider 21 away from the first magnetic ring 17 is fixedly connected to a second tension spring 24 fixedly connected to the inner wall of the storage cavity 22. The control component can control the hydraulic pressure inside the storage cavity 22 during the adjustment process.

[0036] In this embodiment, when the required suction strength is low, the connection between the first volute 2 and the second volute 3 is disconnected by the control component, reducing the hydraulic pressure in the storage cavity 22. Under the pull of the second tension spring 24, the third slider 21 slides towards one side of the storage cavity 22 within the third groove 23, thereby moving the first magnetic ring 17 away from the second magnetic ring 20. This reduces the repulsive force of the first magnetic ring 17 on the second magnetic ring 20. At this time, under the push of the first spring 15, the second slider 12 pushes the second magnetic ring 20 towards the first magnetic ring 17, reducing the thrust of the second slider 12 on the inclined plane 16, thus... The first slider 10 can slide away from the drive shaft 4 under the pull of the first tension spring 14, releasing the helical tooth block 11 from the helical tooth groove 8. Since there is a certain gap between the outer wall of the drive shaft 4 and the inner wall of the second impeller 6, the rotation of the drive shaft 4 will not drive the second impeller 6 to rotate. The drive motor 35 is started, and the drive motor 35 directly drives the drive shaft 4 to make the first impeller 5 rotate. At this time, the suction function can be completed only through the first volute 2, drawing the fluid from the input end into the first volute 2 through the first impeller 5, and then discharging it from its output end, thus completing the function of fluid acceleration.

[0037] When it is necessary to increase the suction strength, the output end of the first volute 2 is connected to the input end of the second volute 3 through the control component. During the connection process, the hydraulic pressure in the storage cavity 22 is increased in conjunction with the hydraulic oil. Under the push of the hydraulic oil, the third slider 21 and the first magnetic ring 17 slide together toward the side of the second magnetic ring 20. The second magnetic ring 20 is subjected to an increased repulsive force from the first magnetic ring 17, so that the second magnetic ring 20 and the second slider 12 gradually slide together toward the side of the first slider 10. The second slider 12 pushes the inclined surface 16 to make the first slider 10 slide toward the side of the drive shaft 4. The first tension spring 14 is stretched. The first slider 10 drives the helical tooth block 11 to gradually fit into the outer wall of the helical tooth groove 8. It can accurately slide into the helical tooth groove 8 during the subsequent rotation of the drive shaft 4. Thus, during the subsequent rotation of the drive shaft 4, the helical tooth block 11, the first slider 10 and the second impeller 6 can rotate together.

[0038] It is worth noting that during the process of the first magnetic ring 17 moving towards the second magnetic ring 20, the first magnetic ring 17 will at most move to a position where it abuts against the fixed ring 36. At this time, the second magnetic ring 20 can be pushed to slide by magnetic force alone. During the pushing process, the first magnetic ring 17 and the second magnetic ring 20 do not come into contact, thereby avoiding the situation where the pressure of the two sets of parts is too high during the pushing process, which increases the frictional resistance of the second impeller 6 and causes energy waste. At the same time, the frictional force on the side of the second impeller 6 during the rotation is only the fixed frictional force between it and the fixed disk 7. The frictional force required for the rotation of the second impeller 6 can be reduced by setting a bearing between them.

[0039] Example 3: Please refer to Figures 2-8 This embodiment further illustrates Embodiment 1. The control components shown in the figure include a first output pipe 25 mounted on the first volute 2, a bent pipe 26 fixedly connected to the side of the second volute 3 away from the fixed disk 7, an installation pipe 37 fixedly connected to the side of the first volute 2, the installation pipe 37 being fixedly connected to the side of the bent pipe 26, a drive shaft 4 passing through the bent pipe 26 and the installation pipe 37 and being rotatably connected to the inner wall of the installation pipe 37, a storage pipe 27 fixedly connected to the outer wall of the bent pipe 26, a sleeve pipe 28 movably sleeved on the outer wall of the bent pipe 26, the sleeve pipe 28 being movably sleeved to the inner wall of the storage pipe 27, a connecting pipe 29 communicating with the storage pipe 27, one end of the connecting pipe 29 being fixedly connected to the fixed disk 7 and communicating with the storage cavity 22, and a connector for communicating with the first output pipe 25 being provided on the sleeve pipe 28.

[0040] The connector includes a delivery pipe 30 connected to one end of the sleeve 28. The end of the delivery pipe 30 away from the sleeve 28 is rotatably connected to a threaded pipe 31, which can be threadedly connected to the inner wall of the first output pipe 25. The end of the sleeve 28 away from the delivery pipe 30 is fixedly connected to a second spring 32, which is fixedly connected to the storage pipe 27. The end of the first volute 2 away from the second volute 3 is provided with an input port 33, and the side of the second volute 3 is connected to a second output pipe 34.

[0041] In this embodiment, when it is necessary to increase the suction strength, the delivery pipe 30 is rotated so that one end of the threaded pipe 31 is opposite to one end of the first output pipe 25. Then, the delivery pipe 30 is pushed to insert the threaded pipe 31 into the first output pipe 25, and the threaded pipe 31 is rotated to make it threadedly connected to the inner wall of the first output pipe 25. At this time, the delivery pipe 30 will drive the sleeve pipe 28 to slide in the storage pipe 27. The sleeve pipe 28 pushes the hydraulic oil in the storage pipe 27 to the connecting pipe 29, and then delivers it to the storage cavity 22 through the connecting pipe 29, which can increase the hydraulic strength in the storage cavity 22. When the threaded pipe 31 is connected to the first output pipe 25, the connection control between the drive shaft 4 and the second impeller 6 is realized simultaneously. Sealing rings can be set at the end of the threaded pipe 31 and at each connection and sliding point inside the delivery pipe 30 and the sleeve pipe 28 to improve the sealing performance and prevent fluid overflow.

[0042] During the rotation of the drive shaft 4, fluid is drawn into the first volute 2 through the inlet 33, accelerated by the first impeller 5, and discharged from the first output pipe 25. After passing through the delivery pipe 30 and the sleeve pipe 28, it is transported to the bend pipe 26 and then drawn into the second volute 3. After being accelerated by the second impeller 6, it is discharged from the second output pipe 34 on the side of the second volute 3. At this time, the fluid velocity further increases, and the suction force generated by the whole device is greater, which can achieve a greater vacuuming requirement. When it is necessary to disconnect the connection between the delivery pipe 30 and the first output pipe 25, the threaded pipe 31 is rotated in the opposite direction to complete the disconnection. At the same time, under the push of the second spring 32, the sleeve pipe 28 is gradually pushed. With the pull of the second tension spring 24, the hydraulic oil in the storage chamber 22 can be pushed into the storage pipe 27 through the connecting pipe 29 for storage, thereby reducing the pressure in the storage chamber 22. At the same time, the connection between the helical tooth groove 8 and the helical tooth block 11 is disconnected, and the connection between the first output pipe 25 and the delivery pipe 30 is also disconnected.

[0043] It is worth noting that: similar structures can be set with multiple sets of second volutes 3, second impellers 6, control components and transmission components on the body 1. By adjusting the number of connected second volutes 3 and the number of second impellers 6 connected to the drive shaft 4 in a synchronous control manner, the suction intensity can be controlled more flexibly. During operation, the drive shaft 4 only drives the impellers connected to it to rotate, and there is no frictional resistance between it and other impellers, which reduces energy waste and achieves the purpose of energy saving.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An energy-saving direct-drive high-speed turbo vacuum pump, characterized by, include: The body has a first volute and a second volute fixedly connected to it. Also includes: The drive mechanism includes a drive shaft mounted on the machine body. A first impeller is housed in a first volute, and a second impeller is housed in a second volute. The first impeller is coaxially and fixedly connected to the drive shaft. The drive shaft passes through the second impeller but does not contact its inner wall. The machine body is equipped with a control component for controlling the connection between the input end of the second volute and the output end of the first volute, and a transmission component for controlling the transmission connection between the second impeller and the drive shaft. When the required suction intensity is relatively low, the drive mechanism drives the first impeller to rotate via the drive shaft to achieve suction. When high-intensity suction is required, the control component connects the input end of the second volute to the output end of the first volute, and the transmission component operates in conjunction with this connection to achieve high suction intensity. The second impeller engages with the outer wall of the drive shaft for transmission. The drive shaft synchronously drives the first and second impellers to rotate and draw fluid, transferring the accelerated fluid from the first volute into the second volute for secondary acceleration, thus increasing the suction intensity. When the control unit disconnects the connection between the first and second volutes, there is no friction between the drive shaft and the second impeller during rotation. The transmission component includes a fixed disk fixedly mounted on the side of the second volute. The second impeller is coaxially rotatably connected to the side of the fixed disk. The drive shaft passes through the fixed disk and is rotatably connected to it. Multiple sets of helical toothed grooves are evenly distributed on the outer wall of the drive shaft. A first sliding groove is provided inside the second impeller, and a first slider is slidably connected within the first sliding groove. An inclined plate that can interlock with the helical toothed groove is fixedly connected to the first slider. The toothed block has a second impeller containing a drive component for controlling the sliding state of the first slider. The drive component includes multiple sets of second sliders installed within the second impeller. A second groove is formed within the second impeller, and the second sliders are slidably connected to the inner wall of the second groove. A first tension spring is fixedly connected to the first slider and to the first groove. A first spring is fixedly connected to the side of the second slider and to the second groove. The first slider has an inclined surface that can slide against the second slider. A fixed disk has a push component for controlling the sliding state of the second slider. The push component includes a first magnetic ring installed within the fixed disk. A first annular groove is formed within the fixed disk, and the first magnetic ring is slidably connected to the inner wall of the first annular groove in a horizontal direction. The second impeller has a second annular groove. A second magnetic ring is slidably connected horizontally within the two annular grooves. Multiple sets of second sliders are fixedly connected to the second magnetic rings. The side of the second magnetic ring facing the first magnetic ring is magnetically repelled by the first magnetic ring. A moving component is provided in the fixed disk to control the movement of the first magnetic ring. The moving component includes multiple sets of third sliders fixedly installed on the side of the first magnetic ring. A storage cavity is provided in the fixed disk for storing hydraulic oil. Multiple sets of third sliding grooves are provided in the fixed disk. The two ends of the third sliding grooves are respectively connected to the storage cavity and the first annular groove. The third slider is slidably connected to the inner wall of the third sliding groove. The end of the third slider away from the first magnetic ring is fixedly connected to a second tension spring fixedly connected to the inner wall of the storage cavity. The control component can control the hydraulic pressure inside the storage cavity during the adjustment process.

2. The energy-saving direct-drive high-speed turbo vacuum pump according to claim 1, characterized in that: The control components include a first output pipe mounted on a first volute, a bent pipe fixedly connected to the side of the second volute away from the fixed disk, a storage pipe fixedly connected to the outer wall of the bent pipe, a sleeve connecting pipe movably sleeved on the outer wall of the bent pipe, the sleeve connecting pipe movably sleeved with the inner wall of the storage pipe, a connecting pipe connected to the storage pipe, one end of the connecting pipe being fixedly connected to the fixed disk and communicating with the storage cavity, and a connector for communicating with the first output pipe on the sleeve connecting pipe.

3. The energy-saving direct-drive high-speed turbo vacuum pump according to claim 2, characterized in that: The connector includes a delivery pipe connected to one end of the sleeve, a threaded pipe rotatably connected to the end of the delivery pipe away from the sleeve, the threaded pipe being threaded to the inner wall of the first output pipe, and a second spring fixedly connected to the end of the sleeve away from the delivery pipe, the second spring being fixedly connected to the storage pipe.

4. The energy-saving direct-drive high-speed turbo vacuum pump according to claim 1, characterized in that: The first volute has an input port at the end away from the second volute, and the second volute has a second output pipe connected to its side. A drive motor is fixedly connected to the body, and the output end of the drive motor is coaxially and fixedly connected to one end of the drive shaft.

5. The energy-saving direct-drive high-speed turbine vacuum pump according to claim 1, characterized in that: A fixing ring is fixedly connected inside the first annular groove, and the fixing ring is used to separate the first magnetic ring and the second magnetic ring.

6. The energy-saving direct-drive high-speed turbine vacuum pump according to claim 2, characterized in that: The first volute is fixedly connected to the side of an installation tube, which is fixedly connected to the side of a bend. The drive shaft passes through the bend and the installation tube and is rotatably connected to the inner wall of the installation tube.

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