Stable-driving magnetic suspension type rotary vane pump

Abstract

The utility model belongs to the field of vehicle parts, and particularly relates to a stably-driven magnetic suspension type rotary vane pump which comprises a cover body, a motor, a magnet assembly and a rotor assembly, a fixed blocking plate is arranged in the cover body, a first cavity is formed between the upper end of the cover body and the blocking plate, and a communicating hole used for being connected with the outside is further formed in the side wall of the first cavity. A rotor assembly is arranged in the first cavity; a second cavity is formed between the lower end of the cover body and the barrier plate; a magnet assembly is arranged in the second cavity; the rotor assembly comprises a rotary vane, a connecting body and placing cavities, the connecting body is arranged in the first cavity, the placing cavities which are oppositely arranged in pairs are formed in the connecting body, and the rotary vane slides on the placing cavities; a plurality of transversely-arranged grooves are formed in the side end of the rotary piece, the tail end face of the rotary piece is inclined, and the rotary piece is driven by the magnet assembly to rotate along the inner side wall of the cover body in an attached mode. Accumulative errors of parts are reduced or avoided in the early stage of design, and the working efficiency of the pump is further improved.

Description

Technical Field

[0001] The utility model belongs to the field of vehicle parts, and in particular relates to a stably driven magnetic suspension type rotary vane pump. Background Art

[0002] Motor fuel vehicles need to regularly check the sealing of the oil circuit to ensure the normal operation and safety of the fuel system. If there is a leak in the oil circuit, the fuel may drip onto hot surfaces or other engine parts, increasing the risk of fire and causing fuel waste. The current method for testing the sealing of the oil circuit of fuel vehicles is to use the car's fuel engine to provide power to evacuate the entire pipeline system. However, vehicles with mixed oil and gas are only driven by batteries for a long time and the fuel engine cannot be started, resulting in the inability to test the sealing of the pipeline for a long time. There are similar functional tests on the market using vacuum pumps. Vacuum pumps are especially used to provide pressure for the brake actuators of motor vehicles with pneumatic brake booster systems, provide vacuum for pneumatic brake boosters, and use vacuum pumps to suck residual air from the vacuum chamber and release it into the atmosphere. However, there are defects such as long-term product aging and the inability of the cavity to completely isolate oil and gas leakage.

[0003] In recent years, the application of magnetic levitation technology has brought new ideas to the design of pumps. Magnetic levitation technology uses magnetic force to achieve the suspension and transmission of objects, and has the advantages of no contact, no wear, low noise, and low vibration. As a positive displacement pump, the rotary vane pump compresses the fluid to do work by changing the volume inside the pump. It has the characteristics of strong self-priming ability and low pressure pulsation. Combining magnetic levitation technology with rotary vane pumps can further improve the performance of the pump and broaden its application range. At present, although there are some magnetic levitation pump products on the market, most of them are concentrated on the design of centrifugal pumps, and the research and development of magnetic levitation rotary vane pumps is still in its infancy. Therefore, the development of a stably driven magnetic levitation rotary vane pump is of great significance to improving the performance of the pump and meeting the needs of special working occasions. Utility Model Content

[0004] The utility model aims to provide a stably driven magnetic suspension type rotary vane pump, aiming to solve the above problems.

[0005] To achieve the above-mentioned purpose, the utility model provides a stably driven magnetic levitation rotary vane pump, including a cover body, a motor, a magnet assembly and a rotor assembly. The lower end of the cover body is connected to the motor, and a fixed baffle plate is arranged in the cover body. A first cavity is formed between the upper end of the cover body and the baffle plate. A connecting hole for connecting to the outside world is also arranged on the side wall of the first cavity, and a rotor assembly is arranged in the first cavity; a second cavity is formed between the lower end of the cover body and the baffle plate; a magnet assembly is arranged in the second cavity; the motor is connected to one end of the magnet assembly through the lower end of the cover body, and the other end of the magnet assembly is magnetically connected to the rotor assembly. The rotor assembly includes a rotary vane, a connector and a placement cavity. The connector is arranged in the first cavity, and placement cavities arranged opposite to each other are arranged on the connector, and the rotary vane slides on the placement cavity; a plurality of transversely arranged grooves are arranged on the side end of the rotary vane, and the end surface of the rotary vane is inclined. Driven by the magnet assembly, the rotary vane rotates along the inner wall of the cover body.

[0006] Furthermore, the end surface of the rotary blade is provided with a first end and a second end, the length of the first end from the connecting body is less than the length of the second end from the connecting body; the second end is fitted and rotated on the inner side wall of the cover body.

[0007] Furthermore, a partition is provided in the second cavity, which divides the first cavity into an upper cavity and a lower cavity. The magnet assembly includes an upper magnet and a lower magnet. The upper magnet is located in the upper cavity and the lower magnet is located in the lower cavity. The upper magnet and the lower magnet are magnetically connected so that the two rotate synchronously.

[0008] Furthermore, the motor is connected to the lower magnet via a first connecting shaft, and the upper end of the cover is connected to the upper magnet via a second connecting shaft.

[0009] Furthermore, a support base is provided between the first connecting shaft and the lower magnet, and a similar support base is also provided between the second connecting shaft and the upper magnet.

[0010] Furthermore, a surrounding first cavity is provided between the cover body and the blocking plate, and a first sealing ring is provided in the first cavity.

[0011] Furthermore, a protective connecting portion is extended downward from the blocking plate, a surrounding second cavity is provided between the protective connecting portion and the separating plate, and a second sealing ring is provided in the second cavity.

[0012] Furthermore, a gap is provided between the protective connection portion and the magnet assembly.

[0013] Furthermore, the lower end of the cover body is also connected to the base, and a second cavity is formed between the base and the blocking plate. The driving end of the motor extends into the base and is connected to the lower magnet. First connecting holes are provided on all sides of the base, and a second connecting hole is provided on the cover body at a relative position. A screw passes through the first connecting hole in turn and is locked and connected with the second connecting hole.

[0014] Furthermore, a connecting hole for connecting to the outside world is provided on the side wall of the cover body, and the connecting hole includes an air inlet and an air outlet. The air inlet transmits the external airflow to the inside of the first cavity, and the air outlet transmits the mixed airflow of oil, gas and air in the first cavity to the outside world.

[0015] The above one or more technical solutions in the stably driven magnetic suspension rotary vane pump provided by the embodiment of the utility model have at least the following technical effects:

[0016] The motor drives the magnet assembly to rotate in the second chamber, and the magnet assembly magnetically drives the rotor assembly to perform circular motion in the first chamber. The rotor assembly inhales oil and gas from the connecting hole, and the air is mixed with the oil and gas and then discharged from the connecting hole to prevent the accumulation of oil and gas from leaking and contacting the motor rotation. The rotor assembly controls the oil and gas and effectively prevents the risk of oil and gas entering the motor. The side end of the rotor is provided with a number of transverse grooves, which not only enhances the strength and stability of the rotor, reduces resistance, reduces the operating load current, and increases the service life. At the same time, the end surface of the rotor is designed to be oblique, which can fit tightly against the inner wall of the cover during rotation, reduce the contact area, reduce operating noise, and reduce or avoid the cumulative errors of parts in the early design stage, further improving the working efficiency of the pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 A structural diagram of a stably driven magnetically suspended rotary vane pump provided in an embodiment of the utility model.

[0019] Figure 2 An exploded view of a stably driven magnetically suspended rotary vane pump provided in an embodiment of the utility model.

[0020] Figure 3 A partial view of the rotor assembly of a stably driven magnetically suspended rotary vane pump provided in an embodiment of the utility model.

[0021] Figure 4 A cross-sectional view of a stably driven magnetically suspended rotary vane pump provided in an embodiment of the utility model.

[0022] Figure 5 A top view of a hidden cover of a stably driven magnetically suspended rotary vane pump provided in an embodiment of the utility model.

[0023] Description of main reference numerals: 100, cover; 110, base; 120, motor; 130, blocking plate; 140, first cavity; 150, second cavity;

[0024] 200, magnet assembly; 210, separator; 220, upper chamber; 230, lower chamber; 240, upper magnet; 250, lower magnet;

[0025] 300, rotor assembly; 310, rotor vane; 320, connector; 330, placement cavity; 340, groove; 350, first connecting shaft; 360, second connecting shaft; 370, first end; 380, second end;

[0026] 400, support seat;

[0027] 500, first cavity; 510, first sealing ring; 520, protective connection portion; 530, second cavity; 540, second sealing ring;

[0028] 600, first connection hole; 610, second connection hole; 620, screw;

[0029] 700, connecting hole; 710, air inlet hole; 720, air outlet hole. DETAILED DESCRIPTION

[0030] The following describes the embodiments of the present invention in detail. Figures 1 to 5 , wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. Figures 1 to 5 The described embodiments are exemplary and are intended to be used to explain the embodiments of the present invention, but should not be construed as limiting the present invention.

[0031] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0033] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0034] In the embodiment of the utility model, this case provides a stably driven magnetic suspension vane 310 pump, including a cover body 100, a motor 120, a magnet assembly 200 and a rotor assembly 300. The lower end of the cover body 100 is connected to the motor 120, and a fixed blocking plate 130 is provided in the cover body 100. A first cavity 140 is formed between the upper end of the cover body 100 and the blocking plate 130. A connecting hole 700 for connecting to the outside world is also provided on the side wall of the first cavity 140. The rotor assembly 300 is provided in the first cavity 140; a second cavity 150 is formed between the lower end of the cover body 100 and the blocking plate 130; and the magnet assembly 200 is provided in the second cavity 150. 00; the motor 120 passes through the lower end of the cover body 100 and is connected to one end of the magnet assembly 200, and the other end of the magnet assembly 200 is magnetically connected to the rotor assembly 300. The rotor assembly 300 includes a rotor 310, a connector 320 and a placement cavity 330. The connector 320 is arranged in the first cavity 140, and the connector 320 is provided with placement cavities 330 arranged opposite to each other in pairs, and the rotor 310 slides on the placement cavity 330; a plurality of transversely arranged grooves 340 are provided on the side end of the rotor 310, and the end surface of the rotor 310 is oblique, and under the drive of the magnet assembly 200, the rotor 310 rotates along the inner wall of the cover body 100.

[0035] Specifically, the motor 120 drives the magnet assembly 200 to rotate in the second chamber, and the magnet assembly 200 magnetically drives the rotor assembly 300 to perform circular motion in the first chamber. The rotor assembly 300 inhales oil and gas from the connecting hole 700, and the air is mixed with the oil and gas and then discharged from the connecting hole 700 to avoid the accumulation of oil and gas leakage and contact with the rotation of the motor 120. The rotor assembly 300 controls the oil and gas to effectively prevent the risk of oil and gas entering the motor 120. The side end of the rotor 310 is provided with a plurality of transverse grooves 340, which not only enhances the strength and stability of the rotor 310. At the same time, the end surface of the rotor 310 is designed to be oblique, which can fit closely to the inner wall of the cover body 100 during the rotation process, reduce the contact area, reduce the operating noise, and reduce or avoid the cumulative error of parts in the early design stage, further improving the working efficiency of the pump.

[0036] In another embodiment of the utility model, the end surface of the rotary vane 310 is provided with a first end 370 and a second end 380, and the length of the first end 370 from the connecting body 320 is less than the length of the second end 380 from the connecting body 320; the second end 380 is fitted and rotated on the inner wall of the cover body 100. Specifically, the oblique design, where only the second end 380 is fitted with the inner wall of the cover body 100, can not only reduce resistance, reduce operating load current, and increase service life while ensuring the mobilization of oil and gas in and out, but also reduce the contact area, reduce operating noise, and improve customer experience.

[0037] In another embodiment of the utility model, a separator 210 is provided in the second cavity 150, and the separator 210 divides the second cavity 150 into an upper cavity 220 and a lower cavity 230, and the magnet assembly 200 includes an upper magnet 240 and a lower magnet 250, the upper magnet 240 is located in the upper cavity 220, and the lower magnet 250 is located in the lower cavity 230, and the upper magnet 240 and the lower magnet 250 are magnetically connected so that the two rotate synchronously. The motor 120 is connected to the lower magnet 250 through the first connecting shaft 350, and the upper end of the cover 100 is connected to the upper magnet 240 through the second connecting shaft 360. Specifically, first, the separator 210 divides the second cavity 150 into an upper cavity 220 and a lower cavity 230, so that the upper magnet 240 and the lower magnet 250 can be located in different spaces respectively. This design not only makes the layout of the magnets more reasonable, but also helps to optimize the distribution of the magnetic field, thereby improving the effect of magnetic suspension. At the same time, the presence of the separator 210 can also reduce the magnetic interference between the magnets, ensuring the stable operation of the magnet assembly 200. Secondly, the upper magnet 240 and the lower magnet 250 are connected by magnetic connection to achieve synchronous rotation. This contactless transmission method eliminates the friction and wear in traditional mechanical transmission, further improving the operation stability and reliability of the pump. At the same time, due to the introduction of the connecting shaft, the rotation of the magnet assembly 200 is smoother, reducing the generation of vibration and noise.

[0038] In another embodiment of the utility model, the end surface of the rotating blade 310 is provided with a first end 370 and a second end 380, and the length of the first end 370 from the connecting body 320 is less than the length of the second end 380 from the connecting body 320; the second end 380 is fitted and rotated on the inner side wall of the cover body 100. Specifically,

[0039] In another embodiment of the utility model, a support seat 400 is provided between the first connecting shaft 350 and the lower magnet 250, and the same support seat 400 is also provided between the second connecting shaft 360 and the upper magnet 240. Specifically, if the lower magnet 250 is directly connected to the first connecting shaft 350, the connection will be unstable and easy to fall off. A support seat 400 is provided between the two, so that the first connecting shaft 350 is connected to the lower magnet 250 through the support seat 400, thereby enhancing the stability of the connection.

[0040] In another embodiment of the utility model, a surrounding first cavity 500 is provided between the cover body 100 and the blocking plate 130, and a first sealing ring 510 is provided in the first cavity 500. A protective connecting portion 520 is extended downward from the blocking plate 130, and a surrounding second cavity 530 is provided between the protective connecting portion 520 and the separator 210, and a second sealing ring 540 is provided in the second cavity 530. Specifically, the first sealing ring 510 and the arrangement of the first sealing ring 510 prevent oil and gas from leaking therefrom and penetrating into the motor 120. This sealing design ensures that the pump can maintain a stable pressure during operation and avoids performance degradation or failure due to leakage.

[0041] In another embodiment of the utility model, a gap is provided between the protective connection portion 520 and the magnet assembly 200 to prevent interference when the magnet assembly 200 moves.

[0042] In another embodiment of the utility model, the lower end of the cover 100 is also connected to the base 110, and a second cavity 150 is formed between the base 110 and the blocking plate. The driving end of the motor 120 extends into the base 110 and is connected to the lower magnet 250. The base 110 is provided with first connection holes 600 on all sides, and the cover 100 is provided with second connection holes 610 at the corresponding position. A screw 620 passes through the first connection hole 600 in turn and is locked and connected with the second connection hole 610. This design method is a common threaded connection method. By locking the screw 620, the cover 100 and the base 110 can be tightly connected and fixed together, with a simple structure and tight connection.

[0043] In another embodiment of the utility model, a connecting hole 700 for connecting to the outside world is further provided on the side wall of the cover body 100, and the connecting hole 700 includes an air inlet hole 710 and an air outlet hole 720. The air inlet hole 710 transmits the air flow from the outside world to the inside of the first cavity 140, and the air outlet hole 720 transmits the air flow mixed with oil, gas and air inside the first cavity 140 to the outside world to enhance connectivity.

[0044] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A stable driven magnetically suspended rotary vane pump, characterized in that: The motor comprises a cover body, a motor, a magnet assembly and a rotor assembly, the lower end of the cover body is connected to the motor, a fixed blocking plate is provided in the cover body, a first cavity is formed between the upper end of the cover body and the blocking plate, a connecting hole for connecting to the outside world is also provided on the side wall of the first cavity, and a rotor assembly is provided in the first cavity; a second cavity is formed between the lower end of the cover body and the blocking plate; a magnet assembly is provided in the second cavity; the motor is connected to one end of the magnet assembly through the lower end of the cover body, and the other end of the magnet assembly is magnetically connected to the rotor assembly, and the rotor assembly comprises a rotor, a connector and a placement cavity, the connector is provided in the first cavity, the placement cavities arranged opposite to each other in pairs are provided on the connector, and the rotor slides on the placement cavity; a plurality of transversely arranged grooves are provided on the side ends of the rotor, and the end surface of the rotor is oblique, so that the rotor rotates along the inner side wall of the cover body under the drive of the magnet assembly.

2. The stably driven magnetically suspended rotary vane pump according to claim 1, characterized in that: The end surface of the rotary blade is provided with a first end and a second end, the distance between the first end and the connecting body is less than the distance between the second end and the connecting body; the second end is fitted and rotated on the inner side wall of the cover body.

3. The stably driven magnetically suspended rotary vane pump according to claim 1, characterized in that: A partition is provided in the second cavity, and the partition divides the first cavity into an upper cavity and a lower cavity. The magnet assembly includes an upper magnet and a lower magnet. The upper magnet is located in the upper cavity, and the lower magnet is located in the lower cavity. The upper magnet and the lower magnet are magnetically connected so that the two rotate synchronously.

4. The stably driven magnetically suspended rotary vane pump according to claim 3, characterized in that: The motor is connected to the lower magnet via a first connecting shaft, and the upper end of the cover is connected to the upper magnet via a second connecting shaft.

5. The stably driven magnetically suspended rotary vane pump according to claim 4, characterized in that: A support seat is provided between the first connecting shaft and the lower magnet, and a similar support seat is also provided between the second connecting shaft and the upper magnet.

6. The stably driven magnetically suspended rotary vane pump according to claim 1, characterized in that: A surrounding first cavity is provided between the cover body and the blocking plate, and a first sealing ring is provided in the first cavity.

7. The stably driven magnetically suspended rotary vane pump according to claim 3, characterized in that: A protective connecting portion extends downward from the blocking plate, a surrounding second cavity is provided between the protective connecting portion and the separating plate, and a second sealing ring is provided in the second cavity.

8. The stably driven magnetically suspended rotary vane pump according to claim 7, characterized in that: A gap is provided between the protective connection portion and the magnet assembly.

9. The stably driven magnetically suspended rotary vane pump according to claim 3, characterized in that: The lower end of the cover body is also connected to the base, and the second cavity is formed between the base and the blocking plate. The driving end of the motor extends into the base and is connected to the lower magnet. First connecting holes are provided on all sides of the base, and the cover body is provided with a second connecting hole at a relative position. A screw passes through the first connecting hole in turn and is locked and connected with the second connecting hole.

10. The stably driven magnetically suspended rotary vane pump according to any one of claims 1 to 9, characterized in that: The side wall of the cover body is also provided with a connecting hole for connecting to the outside world, and the connecting hole includes an air inlet hole and an air outlet hole. The air inlet hole transmits the external airflow to the inside of the first cavity, and the air outlet hole transmits the internal oil gas and air mixed airflow of the first cavity to the outside world.

Images