Blade for vane pump

Abstract

The invention relates to the technical field of vane pumps, in particular to a vane for a vane pump, which comprises a vane with a cuboid overall shape, an oil through hole, a groove, a spring hole and a concave surface, two sides of the vane are arc-shaped surfaces, sharp corners of the arc-shaped surfaces and the upper plane are removed to form fillets, the oil through hole is formed in the center of the vane, and the groove is formed in the center of the vane. The grooves are formed in the two sides of the blade, the spring holes are formed in the bottom of the blade, the concave faces are formed in the top of the blade, the blade is used for reducing the weight of the blade, the blade adopts the injection molding technology, machining is not needed, the manufacturing technology is extremely simple, the technological performance is good, cost can be well controlled, high temperature is not prone to being generated due to friction between the blade and the inner wall of the metal stator, and the service life is long. The small-displacement vane pump is simple in structure, excellent in overall performance and high in cost performance, the blank of non-metal vane pumps of the small-displacement vane pump is achieved, localization of the small-displacement vane pump is greatly promoted, and development of the small-displacement vane pump is promoted.

Description

Technical Field

[0001] The invention relates to the technical field of vane pumps, in particular to a vane for a vane pump. Background Art

[0002] As we all know, in the field of hydraulics, the pump is one of the most important components and the heart of the hydraulic system. The design structure of the hydraulic pump varies according to the application scenario. Among them, the vane pump has a small size, high unit displacement, low operating noise, long life, simple structure, and a wide range of application scenarios.

[0003] The importance of vanes in vane pumps is self-evident. Its design directly affects the performance and life of the pump. Currently, there are few small-displacement vane pumps on the market. Most of the vanes are metal vanes, which have complex manufacturing processes, high material requirements, high costs, and are prone to high temperatures due to friction during operation. In order to solve the above problems, a vane pump is needed. Summary of the invention

[0004] 1. Technical issues to be resolved In view of the deficiencies in the prior art, the present invention provides a vane for a vane pump to solve the problems raised in the above background technology.

[0005] (II) Technical solution To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a vane for a vane pump, comprising a vane with an overall rectangular shape, an oil hole, a groove, a spring hole and a concave surface, the two sides of the vane are arc-shaped arc-shaped surfaces, the arc-shaped surface has high roughness, and the sharp corners of the arc surface and the upper plane are removed to form fillets, the fillets are the contact and friction points between the vane and the stator, the design of the arc-shaped surface ensures the sealing performance while ensuring that the vane can move smoothly in the vane pump, realize volume changes to achieve the purpose of oil suction and discharge, the oil hole is opened in the center of the vane, the size of the oil hole is calculated, and it ensures the efficiency of the vane pump within a reasonable range, avoids the vane from being blocked by volume vacuum due to being too small, or reduces the efficiency of the vane pump due to being too large, the groove is opened on both sides of the vane, and is used to mark batch number, code and other information, the spring hole is opened at the bottom of the vane, and is used to install a spring, and the spring provides thrust for the vane to achieve the sealing of the vane and the wear compensation of the vane, and the concave surface is opened at the top of the vane, and is used to reduce the weight of the vane and save materials.

[0006] Preferably, the blades are made of PEEK material, which has good oil resistance, high temperature resistance and wear resistance.

[0007] Furthermore, the blades are manufactured by injection molding, without the need for machining, and the manufacturing process is simple, with good process performance and the ability to effectively control costs.

[0008] Furthermore, the specific numerical interval of the diameter range of the oil hole is 1. This range is based on the working principle and performance requirements of the vane pump, and is determined through precise calculations and multiple experiments to ensure the efficiency and stability of the vane pump during operation.

[0009] In a further solution, the specific numerical range of the curvature radius of the arc-shaped surfaces on both sides is 2, and the curvature radius is adapted to the inner contour of the vane pump stator to ensure good sealing and smoothness during the movement of the vanes.

[0010] On the basis of the above-mentioned solution, the specific numerical range of the depth of the spring hole is 3, and the depth design can ensure the stability of the spring after installation and provide appropriate thrust to the blade.

[0011] Further on the basis of the above scheme, the specific numerical range of the depth of the grooves on both sides is 4, and the specific numerical range of the width is 5. The size design of the grooves can not only meet the clear readability of the marking information, but also will not adversely affect the overall strength and performance of the blade.

[0012] Further on the basis of the above scheme, the specific numerical range of the depth of the concave surface is 6, and the shape and depth of the concave surface are optimized and designed to reduce the weight of the blade without affecting the mechanical properties of the blade and the working performance in the vane pump.

[0013] (III) Beneficial effects Compared with the prior art, the present invention provides a vane for a vane pump, which has the following beneficial effects: The blades used in the vane pump have good oil resistance, high temperature resistance and wear resistance. The blades are made of injection molding technology and do not require machining. The manufacturing process is extremely simple and the process performance is good. The cost can be well controlled. Moreover, the friction with the inner wall of the metal stator is not easy to generate high temperature, the service life is long, the overall performance is excellent, and the cost performance is very high. It fills the gap of non-metallic material vane pumps for small-displacement vane pumps, greatly promotes the localization of small-displacement vane pumps, and promotes the development of small-displacement vane pumps. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 It is a schematic diagram of the planar structure of the oil through hole of the present invention; Figure 3 It is a schematic diagram of the planar structure of the arc-shaped surface of the present invention; Figure 4 For the present invention Figure 3 Schematic diagram of the cross-sectional structure at BB in the middle; Figure 5 For the present invention Figure 3Schematic diagram of the local enlarged structure at point A in the middle.

[0015] In the figure: 1. blade; 2. arc-shaped surface; 3. rounded corner; 4. oil hole; 5. groove; 6. spring hole; 7. concave surface. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] See also Figures 1 to 5 A vane for a vane pump comprises a vane 1 having an overall rectangular shape, an oil hole 4, a groove 5, a spring hole 6 and a concave surface 7. The overall shape of the vane 1 in this embodiment is a rectangular parallelepiped, which is convenient for orderly arrangement and movement in a specific space of the vane pump. The vane 1 is made of PEEK (polyetheretherketone), which has excellent oil resistance, high temperature resistance and wear resistance. In the working environment of the vane pump, it is often exposed to various hydraulic oils and generates heat during operation. The PEEK material can maintain stable performance under such conditions and is not prone to chemical reactions or physical deformation. At the same time, its good wear resistance ensures that the surface wear of the vane 1 is small during frequent friction with components such as the stator, thereby extending the service life of the vane 1, reducing the frequency of replacing the vane 1, and reducing maintenance costs.

[0018] The two sides of the blade 1 are arc-shaped arc-shaped surfaces 2 with high roughness, and the sharp corners between the arc surface and the upper plane are removed to form fillets 3. Fillets 3 are the contact and friction points between the blade 1 and the stator. The design of the arc-shaped surface 2 ensures the sealing performance while ensuring that the blade 1 can move smoothly in the vane pump to achieve volume changes to achieve the purpose of oil suction and discharge. The two sides of the blade 1 are arc-shaped arc-shaped surfaces 2 with high roughness. This high-roughness design is not rough processing, but is specially treated to make its surface microstructure better fit with the inner wall of the stator, thereby ensuring the sealing performance. When the vane pump is working, the blade 1 Driven by the rotor, the blade 1 rotates at a high speed in the stator, and a dynamic seal is formed between the arc surface 2 and the inner wall of the stator to prevent the hydraulic oil from leaking in the gap between the blade 1 and the stator, ensuring that the vane pump can effectively realize the oil suction and discharge functions. For example, when the blade 1 moves from the oil suction area to the oil pressure area of ​​the stator, the arc surface 2 can effectively prevent the hydraulic oil from flowing back from the high-pressure side to the low-pressure side, ensuring the pressure establishment and flow output of the pump. The design of the arc surface 2 can also ensure that the blade 1 moves smoothly in the vane pump to achieve volume changes to achieve the purpose of oil suction and discharge. The arc-shaped profile allows the blade 1 to slide smoothly in the stator during rotation, reducing There is less friction resistance and jamming between the blade 1 and the inner wall of the stator. At the same time, this shape is conducive to forming a reasonable volume change space during the movement of the blade 1. When the blade 1 extends outward in the rotor slot, the volume between the blade 1 and the stator increases, forming a negative pressure to achieve the oil suction process. When the blade 1 retracts into the rotor slot, the volume decreases, the hydraulic oil is pressed out, and the oil discharge process is completed. Through this smooth movement and precise volume change control, the vane pump can efficiently convert mechanical energy into hydraulic energy and provide a stable power source for the hydraulic system. The sharp corners of the arc surface 2 and the upper plane are removed to form a fillet 3, which is the contact between the blade 1 and the stator. At the friction point, the presence of fillet 3 greatly reduces the stress concentration phenomenon when blade 1 contacts with the stator during movement, avoiding premature wear or damage of blade 1 due to excessive stress at the sharp corners. During the long-term continuous operation of the vane pump, friction constantly occurs between blade 1 and stator. The design of fillet 3 can make the friction more uniform and gentle, reduce the heat generated by friction, and reduce the impact of high temperature on the material properties of blade 1 and stator. At the same time, the surface of fillet 3 is also finely processed to make it have certain wear resistance and self-lubrication, further extending the service life of blade 1 and stator, and improving the overall reliability and stability of the vane pump.

[0019] The oil hole 4 is opened in the center of the blade 1. The size of the oil hole 4 is calculated to ensure the efficiency of the vane pump within a reasonable range, and avoid the vane 1 being blocked by volume vacuum due to being too small, or the vane pump efficiency being reduced due to being too large. The oil hole 4 is opened in the center of the blade 1, and its size is calculated accurately. This calculation process involves many factors such as the working principle of the vane pump, the characteristics of the hydraulic oil, and the movement speed of the vane 1 in the pump. For example, in a small vane pump, the size of the oil hole 4 is within a reasonable range to ensure the efficiency of the vane pump. If the oil hole 4 is too small, during the movement of the blade 1, the back side of the blade 1 (contacting the oil hole 4) will be damaged. When the blade 1 moves from the oil suction area to the oil pressure area, due to the existence of the vacuum cavity, the hydraulic oil cannot be filled to the back of the blade 1 in time, which will cause the blade 1 to be subjected to greater resistance, affecting the movement speed of the blade 1 and the oil suction efficiency of the pump. In severe cases, the blade 1 may even be unable to move normally, resulting in a failure of the vane pump. On the contrary, if the oil through hole 4 is too large, when the blade 1 is in the oil pressure area, too much hydraulic oil will flow back to the oil suction area through the oil through hole 4, reducing the output pressure and oil discharge efficiency of the vane pump, causing energy waste and system performance degradation. Therefore, the precise design of the size of the oil through hole 4 is one of the important links to ensure the efficient operation of the vane pump.

[0020] Grooves 5 are provided on both sides of the blade 1 for marking batch numbers, codes and other information. Grooves 5 are provided on both sides of the blade 1. During the production process of the blade 1, in order to facilitate quality traceability and management, each batch of blades 1 will be marked with the corresponding batch number in the groove 5. At the same time, in some special application scenarios, codes can also be marked in the groove 5 to identify the model, specifications or other specific information of the blade 1. For example, in a large hydraulic system, a variety of vane pumps of different specifications may be used. The code on the blade 1 can be used to quickly and accurately identify the pump type to which the blade 1 belongs, which is convenient for equipment maintenance and management. The mark in the groove 5 is usually laser engraved or other permanent marking methods to ensure that the marking information will not wear out or disappear during the entire service life of the blade 1.

[0021] The spring hole 6 is provided at the bottom of the blade 1 for installing a spring, which provides thrust for the blade 1 to achieve sealing of the blade 1 and compensation for wear of the blade 1. The spring hole 6 is provided at the bottom of the blade 1 and is circular in shape. The diameter matches the outer diameter of the selected spring, and the depth is determined according to the length of the spring. The spring is installed in the spring hole 6, with one end of the spring abutting against the bottom of the spring hole 6 and the other end contacting the corresponding spring seat on the rotor. During the operation of the vane pump, the spring provides thrust for the blade 1, so that the blade 1 always maintains close contact with the inner wall of the stator to achieve sealing of the blade 1. When the blade 1 moves in the rotor slot, due to the force of the spring, the blade 1 can follow the movement trajectory of the rotor in time to ensure the contact between the blade 1 and the stator. The spring can improve the sealing performance between the blades 1 and the stator to prevent leakage of hydraulic oil. At the same time, the spring also plays a role in compensating for the wear of the blade 1. As the vane pump runs for a long time, a certain degree of wear will inevitably occur between the blade 1 and the stator, resulting in a gradual increase in the gap between the blade 1 and the stator. At this time, the thrust of the spring can make the blade 1 automatically adjust its position within a certain range to compensate for the gap change caused by wear and keep the sealing performance relatively stable. For example, when the blade 1 is worn by 0.1 mm, the spring will push the blade 1 outward by 0.1 mm, so that the gap between the blade 1 and the stator is restored to a state close to the initial state, thereby extending the service life of the vane pump and reducing the performance degradation and failure probability caused by the wear of the blade 1.

[0022] The concave surface 7 is provided at the top of the blade 1 to reduce the weight of the blade 1 and save materials. The concave surface 7 is provided at the top of the blade 1. The shape of the concave surface 7 can be circular, elliptical or other suitable shapes. The design of the concave surface 7 is mainly used to reduce the weight of the blade 1 and save materials. In the vane pump, a large number of blades 1 rotate at high speed. Reducing the weight of the blade 1 can reduce the rotational inertia of the rotor, reduce the power required to drive the vane pump, and improve the efficiency of the vane pump. For example, through the design of the concave surface 7, the weight of each blade 1 can be reduced. For the entire vane pump, it can significantly reduce energy consumption, especially in the case of long-term continuous operation, the energy-saving effect is more obvious. In reducing the weight of the blade 1, the weight of the blade 1 can be reduced. While reducing weight, the design of the concave surface 7 also takes into account the impact on the strength and performance of the blade 1. Through the reasonable design of the shape and size of the concave surface 7 and the optimization of the overall structure of the blade 1, it is ensured that the blade 1 can still maintain sufficient strength and rigidity while reducing weight, and meet the working requirements of the vane pump under high-pressure and high-speed operation conditions. For example, a gradual transition design is adopted at the edge of the concave surface 7 to avoid stress concentration, ensuring that the blade 1 will not break or deform when subjected to hydraulic oil pressure and centrifugal force. At the same time, the existence of the concave surface 7 will not affect the matching accuracy and movement performance between the blade 1 and other components (such as a rotor, a stator, etc.), ensuring that the vane pump can operate stably and reliably.

[0023] Finally, see Figure 1In this embodiment, the blade 1 is made of PEEK material, which has good oil resistance, high temperature resistance and wear resistance. In this embodiment, the blade 1 is made of PEEK (polyetheretherketone) material. PEEK material has excellent oil resistance. In an environment where it is in contact with various hydraulic oils for a long time, its chemical structure is stable and will not expand, deform or deteriorate due to oil erosion. For example, in some hydraulic systems that use specific additives or work in a high temperature environment, ordinary material blades 1 may swell, causing the blade 1 to change in size and affect the normal operation of the vane pump, while the PEEK material blade 1 can maintain good dimensional stability and mechanical properties. The PEEK material has excellent wear resistance. During the operation of the vane pump, the blade 1 frequently rubs against the inner wall of the stator. The surface of the PEEK material blade 1 can withstand this friction and has an extremely low wear rate. After actual testing, after simulating the operation of the vane pump for a certain period of time (such as 1000 hours), the wear amount of the PEEK material blade 1 is significantly reduced compared with the traditional metal blade 1, which greatly extends the service life of the blade 1 and reduces the maintenance cost and replacement frequency of the equipment.

[0024] The blade 1 is manufactured by injection molding, which does not require machining. The manufacturing process is simple, the process performance is good, and the cost can be effectively controlled. The blade 1 is manufactured by injection molding, which has significant advantages over traditional machining methods. The injection molding process does not require complex machining operations such as cutting and grinding, which greatly simplifies the manufacturing process. By heating and melting PEEK plastic particles and injecting them into the precision mold cavity, the blade 1 with complex shape and high dimensional accuracy can be quickly and efficiently produced. For example, for complex structures such as the arc surface 2, oil hole 4, groove 5, spring hole 6 and concave surface 7 on the blade 1, the injection molding process can be formed in one time, avoiding the error accumulation caused by multiple clamping, positioning and processing operations during the machining process, ensuring the high precision and consistency of the dimensions of each part of the blade 1. The mold of the injection molding process has a high degree of repeatability and adjustability. Only by replacing molds of different specifications, blades 1 of various models and size requirements can be easily produced, which can well meet the diverse design requirements of the vane pump, especially suitable for the mass production of small-displacement vane pumps. This manufacturing process not only improves production efficiency, but also effectively reduces production costs, making the manufacture of the blade 1 more economical and efficient.

[0025] The specific numerical interval of the diameter range of the oil hole 4 is 1. This range is based on the working principle and performance requirements of the vane pump, and is determined through precise calculations and multiple experiments to ensure the efficiency and stability of the vane pump during operation. The oil hole 4 is opened in the central position of the blade 1, and the specific numerical interval of its diameter range is 1. This range is based on the working principle and performance requirements of the vane pump, and is determined after precise calculations and multiple experimental verifications. The oil hole 4 plays a key role in the operation of the vane pump. It ensures that during the movement of the blade 1, a vacuum cavity will not be formed on the back of the blade 1 due to poor flow of hydraulic oil, and at the same time it cannot be too large to affect the efficiency of the vane pump. When the diameter of the oil hole 4 is too small, for example, less than 1, during the rapid movement of the blade 1 from the oil suction area to the oil pressure area of ​​the stator, the hydraulic oil replenishment speed on the back of the blade 1 cannot keep up with the blade 1 movement speed, it is easy to produce vacuum cavity, which will cause blade 1 to be subjected to greater negative pressure resistance, making the movement of blade 1 unsmooth, and even jamming, seriously affecting the oil suction efficiency and overall performance of the vane pump. On the contrary, if the diameter of the oil hole 4 is too large, exceeding 2, when the blade 1 is in the oil pressure area, too much hydraulic oil will flow back from the high-pressure side to the low-pressure side through the oil hole 4, causing ineffective circulation of the hydraulic oil, reducing the output pressure and oil discharge efficiency of the vane pump. For example, when performing performance testing on the vane pump, it was found that when the diameter of the oil hole 4 increased to a certain extent, the output flow of the vane pump was significantly reduced, the pressure built up slowly, and could not meet the working requirements of the system. Therefore, controlling the diameter of the oil hole 4 within the range of 1-2 can maximize its working efficiency and stability while ensuring the normal suction and discharge of the vane pump.

[0026] The specific numerical range of the curvature radius of the arc-shaped surface 2 on both sides is 2. The curvature radius is adapted to the inner contour of the vane pump stator to ensure good sealing and smoothness during the movement of the vane 1. When the vane pump is working, the vane 1 rotates at a high speed in the stator, and the arc-shaped surface 2 fits tightly with the inner wall of the stator to form a dynamic seal. The appropriate curvature radius can ensure that the vane 1 always maintains good sealing performance during the movement, and effectively prevents the hydraulic oil from leaking in the gap between the vane 1 and the stator. When the curvature radius is too large or too small, it will affect the gap between the vane 1 and the stator. If the radius of curvature is too large, the contact area between blade 1 and the inner wall of the stator will be reduced, the sealing pressure will be uneven, and leakage points will easily appear in local areas, causing hydraulic oil leakage and reducing the volumetric efficiency of the vane pump. For example, it is found in actual use that when the radius of curvature exceeds the design range, the leakage of the vane pump increases significantly and the system pressure is unstable. If the radius of curvature is too small, blade 1 will generate greater friction resistance with the inner wall of the stator during movement, which will not only increase energy consumption, but may also cause increased wear of blade 1 and the stator, shortening the service life of the equipment.

[0027] The specific numerical range of the depth of the spring hole 6 is 3, and its depth design can ensure the stability of the spring after installation and provide appropriate thrust to the blade 1. The depth design of the spring hole 6 is directly related to the stability of the spring after installation and the thrust provided to the blade 1. The appropriate depth can ensure that the spring is in a stable working state after installation, and will not easily fall out due to being too shallow, nor will the spring compression be unstable due to being too deep. When the depth of the spring hole 6 is too shallow, the spring may not be able to expand and contract normally due to insufficient space when subjected to pressure changes during the movement of the blade 1, and may even fall out of the spring hole 6, causing the blade 1 to lose the thrust of the spring and be unable to fit tightly against the inner wall of the stator, thereby seriously affecting the sealing performance and working efficiency of the vane pump. On the contrary, if the depth of the spring hole 6 is too large, the compression of the spring in the hole may exceed a reasonable range, making the thrust provided by the spring to the blade 1 unstable, which may cause the blade 1 to shake or seal poorly during movement, which will also affect the performance of the vane pump.

[0028] The specific numerical range of the depth of the grooves 5 on both sides is 4, and the specific numerical range of the width is 5. The size design of the grooves 5 can not only meet the clarity and readability of the marking information, but also will not have an adverse effect on the overall strength and performance of the blade 1. The main function of the grooves 5 is to mark batch numbers, codes and other information. The size design ensures that the marking information is clear and read while ensuring that it will not have an adverse effect on the overall strength and performance of the blade 1. If the depth of the grooves 5 is too large, the strength of the blade 1 in this part will be weakened, and cracks or fractures will easily occur from the grooves 5 when the blade 1 is subjected to greater pressure or impact force. Similarly, if the width of the grooves 5 is too large, the effective bearing area of ​​the blade 1 will be reduced, affecting the mechanical properties of the blade 1 in the vane pump.

[0029] The specific numerical range of the depth of the concave surface 7 is 6. The shape and depth of the concave surface 7 are optimized and designed to reduce the weight of the blade 1 without affecting the mechanical properties of the blade 1 and the working performance in the vane pump. Reducing the weight of the blade 1 is of great significance to the operation of the vane pump. In the vane pump, multiple blades 1 rotate at high speed with the rotor. Reducing the weight of the blade 1 can reduce the rotational inertia of the rotor and reduce the power required to drive the vane pump, thereby improving the efficiency of the vane pump and reducing energy consumption. For example, through the design of the concave surface 7, the weight of the blade 1 can be reduced by about 10%-20%. In the case of long-term continuous operation, The energy-saving effect is significant. However, the design of the concave surface 7 cannot be at the expense of the strength and working performance of the blade 1. The depth of the concave surface 7 is optimized within the range of 6, which can not only effectively reduce the weight, but also ensure that the blade 1 still has sufficient strength and rigidity under the action of various forces such as hydraulic oil pressure, centrifugal force and friction with the stator. For example, through finite element analysis and actual tests, it is found that when the depth of the concave surface 7 is within this range, the stress distribution of the blade 1 is uniform, and there will be no stress concentration leading to damage of the blade 1, and the movement performance and sealing performance of the blade 1 in the vane pump can also be effectively guaranteed.

[0030] Working principle: The vane pump uses a vane. When the vane 1 is used, the worker first places it at the required position of the vane pump. When the vane pump is working, the thrust provided by the spring makes the vane 1 in close contact with the stator to ensure sealing. As the rotor rotates, the vane 1 reciprocates in the stator. Due to the curved surface design on both sides, the volume changes to complete the oil suction and discharge process. The oil hole 4 ensures that no vacuum cavity is formed during the movement of the vane 1 to affect the operation.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vane for a vane pump, characterized in that: include: A blade (1) having an overall rectangular parallelepiped shape; Both sides of the blade (1) are arc-shaped arc surfaces (2), the arc surface (2) has a high degree of roughness, and the sharp corners between the arc surface and the upper plane are removed to form fillets (3), the fillets (3) are the contact and friction points between the blade (1) and the stator, and the design of the arc surface (2) ensures sealing performance while ensuring that the blade (1) moves smoothly in the vane pump, realizing volume changes to achieve the purpose of oil suction and discharge; An oil through hole (4), the oil through hole (4) being opened at the center of the blade (1), the size of the oil through hole (4) being calculated to ensure the efficiency of the vane pump within a reasonable range, and avoiding the vane pump (1) being blocked by a volume vacuum due to being too small, or the vane pump (1) being reduced in efficiency due to being too large; Grooves (5), the grooves (5) being provided on both sides of the blade (1) and used for marking information such as batch number and code; A spring hole (6), the spring hole (6) being opened at the bottom of the blade (1) and used for installing a spring, the spring providing thrust for the blade (1) to achieve sealing of the blade (1) and compensation for blade wear; A concave surface (7) is provided on the top of the blade (1) and is used to reduce the weight of the blade (1) and save material.

2. A vane for a vane pump according to claim 1, characterized in that: The blade (1) is made of PEEK material, which has good oil resistance, high temperature resistance and wear resistance.

3. The vane for a vane pump according to claim 1, characterized in that: The blade (1) is manufactured by injection molding, does not require machining, has a simple manufacturing process, good process performance, and can effectively control costs.

4. The vane for a vane pump according to claim 1, characterized in that: The specific numerical interval of the diameter range of the oil hole (4) is 1. This range is based on the working principle and performance requirements of the vane pump and is determined through precise calculations and multiple experiments to ensure the efficiency and stability of the vane pump during operation.

5. The vane for a vane pump according to claim 1, characterized in that: The specific numerical range of the curvature radius of the arc-shaped surfaces (2) on both sides is 2, and the curvature radius is adapted to the inner contour of the vane pump stator to ensure good sealing and smoothness during the movement of the vanes (1).

6. The vane for a vane pump according to claim 1, characterized in that: The specific numerical range of the depth of the spring hole (6) is 3, and its depth design can ensure the stability of the spring after installation and provide a suitable thrust for the blade (1).

7. The vane for a vane pump according to claim 1, characterized in that: The specific numerical range of the depth of the grooves (5) on both sides is 4, and the specific numerical range of the width is 5. The size design of the grooves (5) can ensure the clear readability of the marking information without adversely affecting the overall strength and performance of the blade (1).

8. The vane for a vane pump according to claim 1, characterized in that: The specific numerical range of the depth of the concave surface (7) is 6. The shape and depth of the concave surface (7) are optimized and designed to reduce the weight of the blade (1) without affecting the mechanical properties of the blade (1) and the working performance of the blade (1) in the vane pump.

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