Blade type oil delivery pump capable of discharging impurities

Abstract

The invention discloses a vane type oil delivery pump capable of discharging impurities, and relates to the technical field of oil delivery pumps, the vane type oil delivery pump capable of discharging impurities comprises an oil delivery pump cover and a pump body, one side of the oil delivery pump cover is fixedly connected with the pump body, the oil delivery pump cover and the pump body form the vane type oil delivery pump, the oil delivery pump cover comprises a cover body, and the cover body is fixedly connected with the pump body. The cover body is fixedly connected with the pump body, an oil inlet hole and an oil outlet hole are vertically formed in one side of the cover body, the oil inlet hole and the oil outlet hole are connected with an oil inlet pressure relief valve and an oil outlet pressure relief valve respectively, and an oil inlet groove and an oil outlet groove are formed in the side, close to the pump body, of the cover body. Oil is transmitted to the two sides of the rotor through centrifugal force and pressure generated by rotation of the rotor and the blades, abrasion of the rotor to the cover body and the pump body is reduced, meanwhile, the surfaces of the blades are covered with oil, the blades and the rotor are in a floating state, direct friction between the blades and the stator is reduced, and the service life of the pump is prolonged. And noise of rotation of the blades and the rotor is reduced.

Description

Technical Field

[0001] This invention relates to the field of oil pump technology, specifically to a vane-type oil pump capable of removing impurities. Background Technology

[0002] Oil pumps are mechanical devices used to transport petroleum and its products, and are widely used in the petroleum industry, chemical industry, transportation and other fields. Among them are vane pumps, which mainly use rotating vanes to drive the flow of oil. They utilize the centrifugal force and pressure difference generated by the rotation of the vanes in the pump body to draw oil in from the inlet and discharge it through the outlet.

[0003] During the process of transporting oil, solid particles may accumulate or corrode within the oil or the transmission pipeline after prolonged use. The internal structure of a vane pump is intricate, with the vanes tightly fitted to the pump body wall. These solid particles can cause severe wear on the internal structure, disrupting the fit of the vanes and affecting the normal operation of the pump. Furthermore, the multiple vanes arranged in a ring around the rotor repeatedly rub against the pump body wall during rotation, exacerbating vane wear and shortening the pump's lifespan. Summary of the Invention

[0004] The purpose of this invention is to provide a vane-type oil pump capable of removing impurities, in order to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A vane-type oil pump capable of removing impurities includes an oil pump cover and a pump body, one side of which is fixedly connected to the pump body, and the oil pump cover and the pump body constitute a vane-type oil pump. The oil pump cover includes a cover body, which is fixedly connected to the pump body. An oil inlet and an oil outlet are vertically opened on one side of the cover body. An oil inlet pressure relief valve and an oil outlet pressure relief valve are respectively connected to the oil inlet and the oil outlet. An oil inlet groove and an oil outlet groove are opened on the side of the cover body near the pump body. The pump body includes a stator, one side of which is connected to a cover. A rotor is provided on the inner wall of the stator, and blades are arranged in a ring around the edge of the rotor. The side of the stator away from the cover is sealed and connected by a cover plate, and a drive shaft is connected to the center of the rotor.

[0006] In one embodiment, both the oil inlet groove and the oil outlet groove are arc-shaped grooves, symmetrically arranged vertically about one side of the cover. The oil inlet groove and the oil outlet groove are connected to the oil inlet hole and the oil outlet hole, respectively. The inner walls of the oil inlet groove and the oil outlet groove create a low-pressure environment through the rotation of the rotor and blades. A short pipe is provided at the position where the oil inlet hole connects to the oil inlet groove, with the top of the short pipe being lower than the top of the oil inlet groove. A strip-shaped groove is formed on the right side of the oil inlet groove, with a depth less than that of the oil inlet groove. Rotating the drive shaft drives the rotor to rotate on the inner wall of the stator. The rotation of the rotor and blades draws oil into the oil inlet groove through the oil inlet hole. The oil is guided through the short pipe, first contacting the rotor and blades to uniformly mix and accelerate lubrication. The continuous rotation of the rotor and blades carries the oil into the strip-shaped groove, utilizing the depth difference between the strip-shaped groove and the oil inlet groove to separate particulate matter in the oil.

[0007] In one embodiment, a guide groove is provided on the right side of the oil outlet groove, and the guide groove communicates with the oil outlet groove. The guide groove is arc-shaped, and its center coincides with that of the oil outlet groove. The inner wall of the oil outlet groove is connected to the oil outlet pressure relief valve through a hole. After the rotor and blades draw in oil through the oil inlet groove, the eccentric arrangement of the rotor and stator, with the rotor away from the inner wall of the stator, causes the space between the blades and the stator to decrease during rotation. The pressure forces the oil into the oil outlet groove. During rotor rotation, the guide groove pre-guides the oil, reducing the pressure between the rotor and blades, increasing the oil flow rate, and accelerating the oil transfer efficiency.

[0008] In one embodiment, the inner wall of the oil inlet groove is connected to an oil inlet pressure relief valve via a pressure relief hole. A protrusion is provided between the pressure relief hole and the short pipe in the oil inlet groove. The two sides of the protrusion are rounded, and the height of the protrusion is lower than the depth of the oil inlet groove. An oil distribution ring groove is formed on the side of the oil inlet groove near the oil inlet hole, and an oil collection ring groove is formed on the side of the oil inlet groove near the pressure relief hole. Both the oil distribution ring groove and the oil collection ring groove are arc-shaped, and their centers coincide with the center of the rotor. The protrusion separates the oil in the oil inlet groove. Under the rotation of the rotor, a high and low pressure environment is formed in the oil inlet groove. The oil inlet hole, oil inlet groove, protrusion, and strip groove cause the oil flow to swirl. The height difference between the strip groove and the oil inlet groove forms a Tesla valve structure, which quickly filters particulate matter in the oil while preventing oil backflow.

[0009] In one embodiment, the stator has several slots along its edge, each slot holding a blade. One side of the blade is flush with the inner wall of the stator, and the other side of the blade is connected to the stator via the slots. The blade and the slots form an internal pressure chamber. The oil distribution ring groove and the oil collection ring groove communicate with the internal pressure chamber. Both the oil distribution ring groove and the oil collection ring groove communicate with the oil inlet groove. After the oil enters the oil inlet groove, under the centrifugal force of the rotating rotor, the blades move outward, creating a negative pressure in the internal pressure chamber. This draws some of the oil from the oil inlet groove into the internal pressure chamber through the oil distribution ring groove. As the rotor continues to rotate, after the oil enters and exits the oil inlet groove, the blades contract under the pressure of the stator, squeezing the internal pressure chamber and pushing the oil in the internal pressure chamber onto the cover plate, thus lubricating the rotor and the cover plate.

[0010] In one embodiment, the blade includes a slider that is movably engaged with the rotor. A spring is disposed on the side of the slider near the rotor. A through hole is formed inside the slider, and one end of the spring is engaged with the slider through the through hole. A retaining ring is disposed on the inner wall of the through hole, and one end of the spring abuts against the retaining ring. The through hole inside the blade communicates with an internal pressure chamber. After oil is drawn into the internal pressure chamber, centrifugal force propels the oil into the through hole, lubricating the area where the blade contacts the inner wall of the stator and sealing the contact surface between the blade and the stator, thereby increasing the contact degree between the blade and the stator and improving the efficiency of oil transmission.

[0011] In one embodiment, the spring has a circular hole at one end near the retaining ring, and the slider has a slot on the side near the inner wall of the stator, which communicates with the through hole. The slot is biased towards one side of the slider. Adjacent blades form an oil delivery chamber, which communicates with the inner pressure chamber through the slot and through hole. When the pressure in the oil delivery chamber is too high, oil flows into the inner pressure chamber through the slot and through hole. As the blades move outward with the rotation of the rotor, the negative pressure in the inner pressure chamber is balanced by absorbing the oil in the oil delivery chamber. After the inner pressure chamber is filled with oil, the position of the blades is stabilized, reducing blade sway and noise generation. When the oil in the inner pressure chamber rotates to communicate with the oil receiving ring groove, the oil flows under pressure through the oil receiving ring groove into the left side of the oil inlet groove. A protrusion buffers the flow, supplementing the subsequent oil delivery and ensuring a stable oil flow rate. Pressure is released and balanced through the oil inlet pressure relief valve on the left side of the oil inlet groove, simultaneously collecting and cleaning solid particles filtered out of the oil.

[0012] In one embodiment, two retaining rings are provided, symmetrically distributed about the midpoint of the through hole. A floating ball is provided between the two retaining rings, the diameter of which is larger than the inner wall diameter of the retaining ring. The two retaining rings and the floating ball constitute a pressure stabilizing chamber. A pressure relief pipe is provided inside the slider, one end of which is connected to the pressure stabilizing chamber, and the other end of which is connected to the inner pressure chamber. Both retaining rings have chamfered edges on the side closest to the floating ball. As the oil flows through the inner wall of the through hole, it pushes the floating ball to move. During normal rotor rotation, under the action of centrifugal force, the floating ball comes into contact with the retaining ring furthest from the spring. The floating ball separates the oil delivery chamber and the internal pressure chamber. When the pressure in the internal pressure chamber is too high, the pressure pushes the floating ball to detach from the retaining ring, and the oil flows into the internal pressure chamber through the pressure relief pipe and through hole, quickly relieving the pressure on the oil. The oil in the internal pressure chamber flows into the oil inlet groove through the oil collection ring groove. The pressure relief is regulated by the oil inlet pressure relief valve to reduce the impact of uneven pressure on the blades and quickly adjust the oil pressure autonomously to ensure stable operation of the internal oil delivery.

[0013] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: The present invention utilizes the centrifugal force and pressure generated by the rotation of the rotor and blades to transfer oil to both sides of the rotor, reducing the wear of the cover and pump body caused by the rotor rotation. At the same time, the surface of the blades is covered with oil, so that the blades and rotor are in a floating state, reducing the direct friction between the blades and the stator, reducing the noise of the blades and rotor rotation. The oil flow between the blades and the rotor avoids the wear of the internal structure by the remaining solid particles after the oil is squeezed out, extending the service life of the device. The oil is filtered by the oil inlet groove, which makes it convenient for the user to collect and clean the solid particles through the pressure relief valve. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is an exploded view of the structure of the present invention; Figure 3 This is a side view cross-sectional structural schematic diagram of the present invention; Figure 4 This is a schematic diagram of the oil pump cover structure of the present invention; Figure 5 This is a schematic diagram of the slider and spring connection structure of the present invention; Figure 6 This is a schematic diagram of the cross-sectional structure of the blade of the present invention; Figure 7 This is a schematic diagram of the blade structure of the present invention.

[0015] In the picture: 1. Oil pump cover; 101. Cover body; 102. Oil inlet hole; 1021. Short pipe; 103. Oil outlet hole; 104. Oil inlet pressure relief valve; 105. Oil outlet pressure relief valve; 106. Oil inlet groove; 1061. Strip groove; 107. Protrusion; 108. Oil distribution ring groove; 109. Oil collection ring groove; 1010. Oil outlet groove; 1011. Guide groove; 2. Pump body; 201. Stator; 202. Rotor; 203. Blade; 2031. Slider; 2032. Spring; 2033. Through hole; 2034. Snap ring; 2035. Floating ball; 2036. Pressure relief pipe; 2037. Groove; 204. Cover plate; 205. Drive shaft. Detailed Implementation

[0016] 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.

[0017] Please see Figures 1-7 The present invention provides the following technical solution: A vane-type oil pump capable of removing impurities includes an oil pump cover 1 and a pump body 2. One side of the oil pump cover 1 is fixedly connected to the pump body 2. The oil pump cover 1 and the pump body 2 constitute a vane-type oil pump. The oil pump cover 1 includes a cover body 101, which is fixedly connected to the pump body 2. An oil inlet hole 102 and an oil outlet hole 103 are vertically opened on one side of the cover body 101. An oil inlet pressure relief valve 104 and an oil outlet pressure relief valve 105 are respectively connected to the oil inlet pressure relief valve 104 and the oil outlet pressure relief valve 105. An oil inlet groove 106 and an oil outlet groove 1010 are opened on the side of the cover body 101 near the pump body 2. The pump body 2 includes a stator 201, one side of which is connected to the cover 101. A rotor 202 is provided on the inner wall of the stator 201. Blades 203 are arranged in a ring around the edge of the rotor 202. The side of the stator 201 away from the cover 101 is sealed and connected by a cover plate 204. A drive shaft 205 is connected to the center of the rotor 202. The center of the rotor 202 is eccentrically set about the center of the stator 201.

[0018] Both the oil inlet groove 106 and the oil outlet groove 1010 are arc-shaped grooves. The oil inlet groove 106 and the oil outlet groove 1010 are symmetrically arranged vertically about one side of the cover 101. The oil inlet groove 106 and the oil outlet groove 1010 are connected to the oil inlet hole 102 and the oil outlet hole 103, respectively. The rotor 202 is driven to rotate via the drive shaft 205, causing the rotor 202 and the blades 203 to rotate close to one side of the oil inlet groove 106 and the oil outlet groove 1010, thus accelerating the rotation of the oil inlet groove. The airflow on one side of the oil inlet groove 106 and the oil outlet groove 1010 creates a low-pressure environment on the inner wall of the oil inlet groove 106 and the oil outlet groove 1010. The low-pressure environment generates suction. A short pipe 1021 is provided at the position where the oil inlet hole 102 communicates with the oil inlet groove 106. The top horizontal height of the short pipe 1021 is lower than the top horizontal height of the oil inlet groove 106. A strip groove 1061 is opened on the right side of the oil inlet groove 106, and the strip groove 1061 communicates with the oil inlet groove 106. Rotating the drive shaft 205 causes the rotor 202 to rotate on the inner wall of the stator 201. The rotor 202 and blades 203 rotate. The oil inlet 102 is connected to the oil supply pipeline via a pipe fitting. The suction generated by the rotation of the rotor 202 draws oil into the oil inlet groove 106 through the oil inlet 102. The oil is guided by a short pipe 1021, the end of which faces the rotor 202 and blades 203, ensuring the oil first contacts the rotor 202 and blades 203, accelerating lubrication. Simultaneously, the oil is drawn into the oil inlet groove 106 and stirred by the rotation of the rotor 202 and blades 203. The oil and impurities in the oil inlet groove 106 are uniformly mixed. The vertical depth of the oil inlet groove 106 is greater than that of the strip groove 1061. Utilizing the depth difference between the strip groove 1061 and the oil inlet groove 106, the rotor 202 and the blade 203 rotate on the side of the oil inlet groove 106, causing the upper layer of oil in the oil inlet groove 106 to flow and be screened. Utilizing the arc-shaped structure of the oil inlet groove 106, the solid particles in the oil sink to the bottom after rotating along the arc-shaped inner wall of the oil inlet groove 106. The pure oil at the top of the oil inlet groove 106 is scraped by the blade 203 and flows along the strip groove 1061 to separate the particulate matter in the oil.

[0019] A guide groove 1011 is provided on the right side of the oil outlet groove 1010. The guide groove 1011 is connected to the oil outlet groove 1010 and is arc-shaped. The center of the guide groove 1011 coincides with that of the oil outlet groove 1010. The inner wall of the oil outlet groove 1010 is connected to the oil outlet pressure relief valve 105 through a hole. After the rotor 202 and the blades 203 draw in oil through the oil inlet groove 106, due to the eccentric setting of the rotor 202, the side of the rotor 202 away from the inner wall of the stator 201, and the space between the blades 203 and the stator 201 decreases during rotation. The pressure forces the oil into the oil outlet groove 1010. During the rotation of the rotor 202, the guide groove 1011 pre-guides the oil, reduces the pressure between the rotor 202 and the blades 203, increases the flow rate of the oil, and accelerates the oil transmission efficiency.

[0020] The inner wall of the oil inlet groove 106 is connected to the oil inlet pressure relief valve 104 through the pressure relief hole. A protrusion 107 is provided between the pressure relief hole and the short pipe 1061 in the oil inlet groove 106. The two sides of the protrusion 107 are rounded. The height of the protrusion 107 is lower than the depth of the oil inlet groove 106. An oil distribution ring groove 108 is provided on one side of the oil inlet groove 106, and an oil collection ring groove 109 is provided on the other side of the oil inlet groove 106. Both the oil distribution ring groove 108 and the oil collection ring groove 109 are arc-shaped. The center of the oil distribution ring groove 108 and the oil collection ring groove 109 coincides with the center of the rotor 202. The oil in the oil inlet groove 106 is divided into two parts by the protrusion 107. The rotor 202 rotates towards the strip groove 1061, so that most of the oil is transported through the strip groove 1061. Some oil and solid particles remain in the oil inlet groove 106. The protrusion 107 blocks the solid particles deposited at the bottom of the oil inlet groove 106. Oil continuously enters the oil inlet groove 106, and some oil is forced into the oil distribution ring groove 108 under pressure to lubricate the sides of the rotor 202 and blades 203. The rotor 202 and blades 203 rotate continuously. The oil adhering to the side is collected through the oil collection ring groove 109. The oil flows into the oil inlet groove 106 along the oil collection ring groove 109, so that the oil circulation is formed on both sides of the oil inlet groove 106. The flow diameter of the oil is changed by the setting of the protrusion 107, creating a high and low pressure environment in the oil inlet groove 106. The oil inlet hole 102, the oil inlet groove 106, the protrusion 107 and the strip groove 1061 make the oil flow form a swirling motion, so that the inner wall of the oil inlet groove 106 forms a Tesla valve structure, reducing the backflow of oil and impurity solid particles.

[0021] The rotor 202 has several slots equidistantly arranged in an annular shape on its edge. Each slot is fitted with a blade 203. One side of the blade 203 is in contact with the inner wall of the stator 201, and the other side of the blade 203 is connected to the rotor 202 through the slot. The blade 203 and the slot form an internal pressure chamber. During the rotation of the rotor 202 and the blade 203, the rotor 202 is eccentrically positioned about the center of the stator 201. The space inside the internal pressure chamber increases and decreases as the blade 203 slides. The pressure inside the internal pressure chamber decreases when the blade 203 slides out of the rotor 202 and increases when the blade 203 is squeezed inward of the rotor 202. The oil distribution ring groove 108 and the oil collection ring groove 109 are connected to the internal pressure chamber. Both the oil distribution ring groove 108 and the oil collection ring groove 109 are connected to the oil inlet groove 106. After the oil enters the oil inlet groove 106, under the centrifugal force of the rotor 202, the blades 203 move outward, creating a negative pressure in the inner pressure chamber. This draws some of the oil in the oil inlet groove 106 into the inner pressure chamber through the oil distribution ring groove 108. The rotor 202 continues to rotate. After the oil enters the oil outlet groove 1010, the blades 203 contract under the pressure of the stator 201. The blades 203 squeeze the inner pressure chamber, pushing the oil in the inner pressure chamber onto the cover plate 204, thus lubricating the rotor 202 and the cover plate 204.

[0022] The blade 203 includes a slider 2031, which is movably engaged with the rotor 202. A spring 2032 is provided on the side of the slider 2031 near the rotor 202. A through hole 2033 is provided inside the slider 2031. One end of the spring 2032 is engaged with the slider 2031 through the through hole 2033. A retaining ring 2034 is provided on the inner wall of the through hole 2033, and one end of the spring 2032 abuts against the retaining ring 2034. The through hole 2033 inside the blade 203 communicates with the internal pressure chamber. After oil is drawn into the internal pressure chamber, centrifugal force propels the oil into the through hole 2033, lubricating the area where the blade 203 contacts the inner wall of the stator 201 and sealing the contact surface between the blade 203 and the stator 201, increasing the contact degree between the blade 203 and the stator 201 and improving the efficiency of oil transmission.

[0023] A round hole is provided at one end of the spring 2032 near the retaining ring 2034, and a slot 2037 is provided on the side of the slider 2031 near the inner wall of the stator 201. The slot 2037 is connected to the through hole 2033 and is biased towards one side of the slider 2031. Adjacent blades 203 form an oil delivery chamber, which is connected to the inner pressure chamber via a slot 2037 and a through hole 2033. When the pressure in the oil delivery chamber is too high, oil flows into the inner pressure chamber through the slot 2037 and the through hole. As the blades 203 move outward with the rotation of the rotor 202, the negative pressure in the inner pressure chamber is balanced by absorbing the oil in the oil delivery chamber. After the inner pressure chamber is filled with oil, the position of the blades 203 is stabilized, reducing the swaying of the blades 203 and reducing noise generation. When the oil in the inner pressure chamber rotates to connect with the oil collection ring groove 109, the oil flows into the left side of the oil inlet groove 106 under pressure through the oil collection ring groove 109. On the side, the bump 107 provides buffering and replenishes the subsequent oil transmission, ensuring a stable oil flow rate. The oil in the inlet groove 106 is depressurized and balanced by the inlet pressure relief valve 104 on the left side. The oil in the inlet groove 106 enters the internal pressure chamber through the oil distribution ring groove 108, and then flows back to the left side of the inlet groove 106 through the oil collection ring groove 109. The pressure relief hole of the inlet hydraulic valve 104 is located on the left side of the bump 107. The bump 107 screens solid particles in the oil. When the inlet pressure relief valve 104 is opened, it discharges the solid particles deposited at the bottom of the inlet groove 106, thus collecting and cleaning the solid particles filtered out of the oil while depressurizing.

[0024] Two retaining rings 2034 are provided, and the two retaining rings 2034 are symmetrically distributed about the midpoint of the through hole 2033. A floating ball 2035 is provided between the two retaining rings 2034. The diameter of the floating ball 2035 is larger than the inner wall diameter of the retaining ring 2034. The two retaining rings 2034 and the floating ball 2035 constitute a pressure stabilizing chamber. A pressure relief pipe 2036 is provided inside the slider 2031. One end of the pressure relief pipe 2036 is connected to the pressure stabilizing chamber, and the other end of the pressure relief pipe 2036 is connected to the inner pressure chamber. Both retaining rings 2034 have chamfered edges on the side closest to the floating ball 2035. As the oil flows through the inner wall of the through hole 2033, it pushes the floating ball 2035 to move. During the normal rotation of the rotor 202, under the action of centrifugal force, the floating ball 2035 comes into contact with the retaining ring 2034 away from the spring 2032. The floating ball 2035 separates the oil delivery chamber and the internal pressure chamber. When the pressure in the internal pressure chamber is too high, the pressure pushes the floating ball 2035 to break away from the retaining ring 2034. The oil flows to the internal pressure chamber through the pressure relief pipe 2036 and the through hole 2033, quickly relieving the pressure of the oil. The oil in the internal pressure chamber flows into the oil inlet groove 106 through the oil collection ring groove 109. The pressure relief is regulated by the oil inlet pressure relief valve 104 to reduce the impact of uneven pressure on the blade 203, quickly and autonomously adjust the oil pressure, and ensure the stable operation of the internal oil delivery.

[0025] Working principle of the invention: First, connect the oil inlet 102 and oil outlet 103 to the oil pipeline. Connect the drive shaft 205 to the output shaft of the motor. Start the motor to drive the drive shaft 205 to rotate. Rotating the drive shaft 205 drives the rotor 202 to rotate on the inner wall of the stator 201. The rotor 202 and blades 203 rotate, drawing oil into the oil inlet groove 106 through the oil inlet 102. The oil is guided through the short pipe 1021. The oil first contacts the rotor 202 and blades 203, mixing the oil evenly and accelerating the lubrication of the rotor 202 and blades 203. The rotor 202 and blades 203 continue to rotate, carrying the oil into the strip groove 1061. Utilize the depth difference between the strip groove 1061 and the oil inlet groove 106 to separate particulate matter in the oil. After the rotor 202 and blades 203 draw in oil through the oil inlet groove 106, the rotor 202 is eccentrically positioned so that it is away from the inner wall of the stator 201. As the rotor 202 rotates, the space between the blades 203 and the stator 201 decreases, and the pressure forces the oil into the oil outlet groove 1010. During the rotation of the rotor 202, the guide groove 1011 pre-guides the oil, reducing the pressure between the rotor 202 and the blades 203, increasing the flow rate of the oil, and accelerating the transmission efficiency of the oil. The oil in the oil inlet groove 106 is separated by the protrusion 107. Under the rotation of the rotor 202, a high and low pressure environment is formed in the oil inlet groove 106. The oil inlet hole 102, the oil inlet groove 106, the protrusion 107 and the strip groove 1061 make the oil flow form a swirling motion. The height difference between the strip groove 1061 and the oil inlet groove 106 forms a Tesla valve structure, which quickly filters particulate matter in the oil and prevents the backflow of the oil. Both the oil distribution ring groove 108 and the oil collection ring groove 109 are connected to the oil inlet groove 106. After the oil enters the oil inlet groove 106, under the centrifugal force of the rotor 202, the blades 203 move outward, creating a negative pressure in the inner pressure chamber. This draws some of the oil in the oil inlet groove 106 into the inner pressure chamber through the oil distribution ring groove 108. The rotor 202 continues to rotate. After the oil enters and exits the oil inlet groove 1010, the blades 203 contract under the pressure of the stator 201. The blades 203 squeeze the inner pressure chamber, pushing the oil in the inner pressure chamber onto the cover plate 204, thus lubricating the rotor 202 and the cover plate 204. The through hole 2033 inside the blade 203 is connected to the internal pressure chamber. After oil is drawn into the internal pressure chamber, the centrifugal force pushes the oil into the through hole 2033 to lubricate the position where the blade 203 and the inner wall of the stator 201 are in contact, and to seal the contact surface between the blade 203 and the stator 201 with oil, thereby increasing the contact degree between the blade 203 and the stator 201 and improving the efficiency of oil transmission. Adjacent blades 203 form an oil delivery chamber, which is connected to the inner pressure chamber via a slot 2037 and a through hole 2033. When the pressure in the oil delivery chamber is too high, the oil flows into the inner pressure chamber through the slot 2037 and the through hole. As the blades 203 move outward with the rotation of the rotor 202, the negative pressure in the inner pressure chamber is balanced by absorbing the oil in the oil delivery chamber. After the inner pressure chamber is filled with oil, the position of the blades 203 is stabilized, reducing the swaying of the blades 203 and reducing noise. When the oil in the inner pressure chamber rotates to connect with the oil receiving ring groove 109, the oil flows under pressure through the oil receiving ring groove 109 into the left side of the oil inlet groove 106. The protrusion 107 provides buffering and supplements the subsequent oil transmission, ensuring a stable oil delivery flow rate. The oil inlet pressure relief valve 104 on the left side of the oil inlet groove 106 provides pressure relief and balance, and at the same time, the oil is filtered. Solid particles are collected and cleaned. The two retaining rings 2034 are chamfered on the side near the floating ball 2035. As the oil flows through the inner wall of the through hole 2033, it pushes the floating ball 2035 to move. During the normal rotation of the rotor 202, under the action of centrifugal force, the floating ball 2035 is in contact with the retaining ring 2034 away from the spring 2032. The floating ball 2035 separates the oil delivery chamber and the internal pressure chamber. When the pressure in the internal pressure chamber is too high, the pressure pushes the floating ball 2035 to break away from the retaining ring 2034. The oil flows to the internal pressure chamber through the pressure relief pipe 2036 and the through hole 2033, which quickly relieves the pressure of the oil. The oil in the internal pressure chamber flows into the oil inlet groove 106 through the oil collection ring groove 109. The pressure relief is regulated by the oil inlet pressure relief valve 104 to reduce the impact of uneven pressure on the blade 203. The oil pressure is quickly and autonomously adjusted to ensure the stable operation of the internal oil delivery.

[0026] 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.

[0027] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A vane-type oil pump capable of removing impurities, comprising an oil pump cover (1) and a pump body (2), characterized in that: One side of the oil pump cover (1) is fixedly connected to the pump body (2), and the oil pump cover (1) and the pump body (2) constitute a vane-type oil pump. The oil pump cover (1) includes a cover body (101), which is fixedly connected to the pump body (2). An oil inlet hole (102) and an oil outlet hole (103) are vertically opened on one side of the cover body (101). An oil inlet pressure relief valve (104) and an oil outlet pressure relief valve (105) are respectively connected to the oil inlet hole (102) and the oil outlet hole (103). An oil inlet groove (106) and an oil outlet groove (1010) are opened on the side of the cover body (101) near the pump body (2). The pump body (2) includes a stator (201), one side of which is connected to the cover (101). A rotor (202) is provided on the inner wall of the stator (201). Blades (203) are arranged in a ring around the edge of the rotor (202). The side of the stator (201) away from the cover (101) is sealed by a cover plate (204). A drive shaft (205) is connected to the center of the rotor (202). The center of the rotor (202) is eccentrically set about the center of the stator (201).

2. The impurity-removing vane-type oil pump according to claim 1, characterized in that: The oil inlet groove (106) and the oil outlet groove (1010) are both set as arc-shaped grooves. The oil inlet groove (106) and the oil outlet groove (1010) are symmetrically arranged on one side of the cover (101). The oil inlet groove (106) and the oil outlet groove (1010) are connected to the oil inlet hole (102) and the oil outlet hole (103) respectively. The inner wall of the oil inlet groove (106) and the oil outlet groove (1010) forms a low-pressure environment through the rotation of the rotor (202) and the blade (203). A short pipe (1021) is provided at the position where the oil inlet hole (102) connects with the oil inlet groove (106). A strip groove (1061) is opened on the right side of the oil inlet groove (106).

3. A vane-type oil pump capable of removing impurities according to claim 2, characterized in that: A guide groove (1011) is provided on the right side of the oil outlet groove (1010). The guide groove (1011) is connected to the oil outlet groove (1010). The guide groove (1011) is arc-shaped. The center of the guide groove (1011) coincides with that of the oil outlet groove (1010). The inner wall of the oil outlet groove (1010) is connected to the oil outlet pressure relief valve (105) through a hole.

4. A vane-type oil pump capable of removing impurities according to claim 3, characterized in that: The inner wall of the oil inlet groove (106) is connected to the oil inlet pressure relief valve (104) through the pressure relief hole. A protrusion (107) is provided between the pressure relief hole and the short pipe (1021) in the oil inlet groove (106). The two sides of the protrusion (107) are rounded. An oil distribution ring groove (108) is provided on the side of the oil inlet groove (106) near the oil inlet hole (102). An oil collection ring groove (109) is provided on the side of the oil inlet groove (106) near the pressure relief hole. Both the oil distribution ring groove (108) and the oil collection ring groove (109) are arc-shaped. The center of the oil distribution ring groove (108) and the oil collection ring groove (109) coincides with the center of the rotor (202).

5. A vane-type oil pump capable of removing impurities according to claim 4, characterized in that: The stator (201) has several slots equidistantly arranged in an annular shape on its edge. Each slot is fitted with a blade (203). One side of the blade (203) is in contact with the inner wall of the stator (201), and the other side of the blade (203) is connected to the stator (201) through the slot. The blade (203) and the slot form an internal pressure chamber. The oil distribution ring groove (108) and the oil collection ring groove (109) are connected to the internal pressure chamber.

6. A vane-type oil pump capable of removing impurities according to claim 5, characterized in that: The blade (203) includes a slider (2031), which is movably engaged with the rotor (202). A spring (2032) is provided on the side of the slider (2031) near the rotor (202). A through hole (2033) is provided inside the slider (2031). One end of the spring (2032) is engaged with the slider (2031) through the through hole (2033). A retaining ring (2034) is provided on the inner wall of the through hole (2033). One end of the spring (2032) abuts against the retaining ring (2034).

7. A vane-type oil pump capable of removing impurities according to claim 6, characterized in that: The spring (2032) has a round hole at one end near the retaining ring (2034), and the slider (2031) has a slot (2037) on one side near the inner wall of the stator (201). The slot (2037) is connected to the through hole (2033), and the slot (2037) is set to one side of the slider (2031).

8. A vane-type oil pump capable of removing impurities according to claim 7, characterized in that: Two retaining rings (2034) are provided, and the two retaining rings (2034) are symmetrically distributed about the midpoint of the through hole (2033). A floating ball (2035) is provided between the two retaining rings (2034). The diameter of the floating ball (2035) is larger than the inner wall diameter of the retaining ring (2034). The two retaining rings (2034) and the floating ball (2035) constitute a pressure stabilizing chamber. A pressure relief pipe (2036) is provided inside the slider (2031). One end of the pressure relief pipe (2036) is connected to the pressure stabilizing chamber, and the other end of the pressure relief pipe (2036) is connected to the inner pressure chamber.

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