Oil pump with optimized rotating structure

Abstract

The utility model relates to the technical field of oil pumps, and discloses an oil pump with an optimized rotating structure, which comprises a pump body, an oil distribution disc is arranged in the pump body, an outer rotor is rotatably connected in the oil distribution disc, a rotor shaft is rotatably connected in the pump body, and an inner rotor fixedly sleeves the top end of the rotor shaft. Two guide columns are fixedly connected to the outer circumferential face of the oil distribution disc, and two guide grooves are formed in the pump body. According to the oil pump with the optimized rotating structure, the guide column and the guide groove are arranged, the oil distribution disc is promoted to slide within a range, the elastic element is arranged in the guide groove, acting force opposite to the displacement direction is applied to the oil distribution disc, the situation that the oil distribution disc is seriously abraded due to the action of radial force is effectively avoided, and the inner rotor and the outer rotor are promoted to be attached all the time; the best sealing effect is maintained, and the problem that the oil distribution disc is affected by the radial force of the gear set, generates tiny displacement and is continuously abraded is solved.

Description

Technical Field

[0001] This application relates to the field of oil pump technology, specifically to an oil pump with an optimized rotating structure. Background Technology

[0002] An oil pump is a lightweight and compact pump, mainly divided into three categories: inline, distributor, and unit. Oil pumps require a power source to operate, usually driven by the crankshaft gear of an engine to operate the camshaft below. Oil pumps play a key role in construction machinery, and the quantity, pressure, and time of pumping oil need to be very precise, and they can be automatically adjusted according to the load.

[0003] When the oil pump is running, its internal gear set will generate radial force. This force will cause the oil distribution plate to make a slight displacement. If it operates like this for a long time, the oil distribution plate will gradually reduce its working efficiency due to continuous wear. In severe cases, it may even cause the oil pump to fail, affecting the overall performance and stability of the equipment. Utility Model Content

[0004] To address the shortcomings of existing technologies, this application provides an oil pump with an optimized rotating structure. This pump has the advantages of enabling the distribution plate to slide within a certain range and applying a force to the distribution plate in the opposite direction of displacement, effectively preventing severe wear of the distribution plate due to radial force, ensuring that the inner and outer rotors are always in contact, and maintaining the best sealing effect. This solves the problem that the distribution plate will undergo slight displacement and continuous wear due to the radial force of the gear set during oil pump operation.

[0005] To achieve the above objectives, this application provides the following technical solution: an oil pump with an optimized rotating structure, comprising a pump body, an oil distribution plate inside the pump body, an outer rotor rotatably connected inside the oil distribution plate, a rotor shaft rotatably connected inside the pump body, an inner rotor fixedly sleeved at the top end of the rotor shaft, two guide posts fixedly connected to the outer circumferential surface of the oil distribution plate, two guide grooves opened inside the pump body, the outer circumferential surfaces of the guide posts being slidably inserted into the pump body through the guide grooves, and an elastic element inside each guide groove, the end of the elastic element near the guide post being fixedly connected to the guide post, and the end of the elastic element away from the guide post being fixedly connected to the inner wall of the guide groove.

[0006] With the above solution, since the oil distribution plate will undergo slight displacement and continuous wear due to the radial force of the gear set during the operation of the oil pump, by setting guide pillars and guide grooves, the oil distribution plate is made to slide within a range. By setting elastic elements inside the guide grooves, a force opposite to the displacement direction is applied to the oil distribution plate, which effectively avoids severe wear of the oil distribution plate due to the radial force, and ensures that the inner rotor and outer rotor are always in contact, maintaining the best sealing effect.

[0007] Furthermore, the inner rotor is located inside the outer rotor, and the inner rotor meshes with the outer rotor.

[0008] The above scheme enables the inner rotor to drive the outer rotor to move, thereby realizing the intake, compression and discharge of liquid.

[0009] Furthermore, both guide posts are located on the axis of the oil distribution plate, and the two guide posts are arranged symmetrically.

[0010] The above scheme allows the guide post to support the distribution plate, enabling the distribution plate to slide within a certain range.

[0011] Furthermore, the outer circumferential surface of the outer rotor is provided with a limiting protrusion, and the inner wall of the oil distribution plate is provided with a limiting groove. The limiting protrusion is rotatably connected to the oil distribution plate through the limiting groove.

[0012] The above scheme restricts the outer rotor, preventing it from easily detaching from the oil distribution plate and improving the stability of the outer rotor's movement.

[0013] Furthermore, each of the guide posts has two sliders fixedly connected to its outer circumferential surface, and each of the guide grooves has two sliding grooves on its inner wall. The sliders are slidably connected to the pump body through the sliding grooves.

[0014] The above scheme restricts the guide column, preventing it from rotating and ensuring it always moves laterally, thus improving the stability of the distribution plate's movement.

[0015] Furthermore, an elastic sealing sleeve is fixedly fitted onto the outer circumferential surface of the oil distribution plate, and the outer surface of the elastic sealing sleeve is fixedly connected to the interior of the pump body.

[0016] Through the above solution, the elastic sealing sleeve can not only prevent oil leakage, but also reduce friction and wear between the oil distribution plate and the pump body. At the same time, the elastic sealing sleeve also has a certain elastic recovery ability, which can adapt to the small displacement of the oil distribution plate during rotation, ensuring the stable operation of the oil pump.

[0017] Furthermore, the oil distribution plate is made of stainless steel alloy.

[0018] Through the above solution, the stainless steel material has excellent corrosion resistance and strength, ensuring that the oil distribution plate maintains stable performance during long-term use.

[0019] Furthermore, the elastic element is a metal bellows.

[0020] Through the above scheme, the metal bellows has excellent flexibility and elastic recovery ability, which can apply a reaction force to the guide post, causing the oil distribution plate to move back, and at the same time causing the inner rotor and outer rotor to fit tightly together, maintaining the best sealing effect.

[0021] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0022] This optimized rotating oil pump, by setting guide pillars and guide grooves, causes the oil distribution plate to slide within a certain range. By setting elastic elements inside the guide grooves, a force opposite to the displacement direction is applied to the oil distribution plate, which effectively avoids severe wear of the oil distribution plate due to radial force. This ensures that the inner and outer rotors are always in contact, maintaining the best sealing effect and solving the problem that the oil distribution plate will continuously wear due to slight displacement caused by the radial force of the gear set. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the entire application;

[0024] Figure 2 This is a structural diagram of the pump body for this application;

[0025] Figure 3 This is a cross-sectional front view of the structure of this application;

[0026] Figure 4 This is a top view of the cross-section structure of this application.

[0027] In the picture:

[0028] 1. Pump body; 2. Oil distribution plate; 3. Outer rotor; 4. Rotor shaft; 5. Inner rotor; 6. Guide column; 7. Guide groove; 8. Elastic element; 9. Limiting protrusion; 10. Limiting groove; 11. Sliding block; 12. Sliding groove; 13. Elastic sealing sleeve. Detailed Implementation

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

[0030] Please see Figure 1 , Figure 2 and Figure 3An optimized rotating structure oil pump in this embodiment includes a pump body 1. An oil distribution plate 2 is provided inside the pump body 1. An outer rotor 3 is rotatably connected inside the oil distribution plate 2. A rotor shaft 4 is rotatably connected inside the pump body 1. An inner rotor 5 is fixedly sleeved at the top of the rotor shaft 4. Two guide posts 6 are fixedly connected to the outer circumferential surface of the oil distribution plate 2. Two guide grooves 7 are opened inside the pump body 1. The outer circumferential surfaces of the guide posts 6 are slidably inserted into the pump body 1 through the guide grooves 7. Each guide groove 7 has an elastic element 8 inside. The end of the elastic element 8 near the guide post 6 is fixedly connected to the guide post 6, and the end of the elastic element 8 away from the guide post 6 is fixedly connected to the inner wall of the guide groove 7.

[0031] Please see Figure 1 , Figure 3 and Figure 4 The inner rotor 5 is located inside the outer rotor 3. The inner rotor 5 meshes with the outer rotor 3, enabling the inner rotor 5 to drive the outer rotor 3 to move, thereby realizing the intake, compression and discharge of liquid.

[0032] Please see Figure 3 and Figure 4 Both guide posts 6 are located on the axis of the oil distribution plate 2. The two guide posts 6 are symmetrically arranged. The guide posts 6 can support the oil distribution plate 2, enabling the oil distribution plate 2 to slide within a certain range.

[0033] Please see Figure 3 The outer circumferential surface of the outer rotor 3 is provided with a limiting protrusion 9, and the inner wall of the oil distribution plate 2 is provided with a limiting groove 10. The limiting protrusion 9 is rotatably connected to the oil distribution plate 2 through the limiting groove 10, thereby restricting the outer rotor 3 and preventing the outer rotor 3 from easily falling out of the oil distribution plate 2, thus improving the stability of the movement of the outer rotor 3.

[0034] Please see Figure 3 and Figure 4 Two sliders 11 are fixedly connected to the outer circumference of each guide post 6, and two sliding grooves 12 are opened on the inner wall of each guide groove 7. The sliders 11 are slidably connected to the pump body 1 through the sliding grooves 12 to restrict the guide post 6, prevent the guide post 6 from rotating, and make the guide post 6 always move laterally, thereby improving the stability of the oil distribution plate 2 movement.

[0035] Please see Figure 1 , Figure 3 and Figure 4 An elastic sealing sleeve 13 is fixedly fitted onto the outer circumferential surface of the oil distribution plate 2. The outer surface of the elastic sealing sleeve 13 is fixedly connected to the inside of the pump body 1. The elastic sealing sleeve 13 can not only prevent oil leakage, but also reduce friction and wear between the oil distribution plate 2 and the pump body 1. At the same time, the elastic sealing sleeve 13 also has a certain elastic recovery ability, which can adapt to the small displacement of the oil distribution plate 2 during rotation, ensuring the stable operation of the oil pump.

[0036] Please see Figure 1 , Figure 3 and Figure 4 The oil distribution plate 2 is made of stainless steel alloy. Stainless steel has excellent corrosion resistance and strength, ensuring that the oil distribution plate 2 maintains stable performance during long-term use.

[0037] Please see Figure 3 and Figure 4 The elastic element 8 is a metal bellows. The metal bellows has excellent flexibility and elastic recovery ability, which can apply a reaction force to the guide post 6, causing the oil distribution plate 2 to move back, and at the same time causing the inner rotor 5 and the outer rotor 3 to stick together to maintain the best sealing effect.

[0038] This embodiment of an oil pump with an optimized rotating structure, by setting guide pillars 6 and guide grooves 7, causes the oil distribution plate 2 to slide within a certain range. By setting elastic elements 8 inside the guide grooves 7, a force opposite to the displacement direction is applied to the oil distribution plate 2, which effectively avoids severe wear of the oil distribution plate 2 due to the radial force. This ensures that the inner rotor 5 and the outer rotor 3 are always in contact, maintaining the best sealing effect, and solves the problem that the oil distribution plate 2 will continuously wear due to slight displacement caused by the radial force of the gear set.

[0039] It should be noted that the inner rotor 5 is eccentrically positioned relative to the outer rotor 3.

[0040] The working principle of the above embodiments is as follows:

[0041] When the oil pump starts, the rotor shaft 4 drives the inner rotor 5 to rotate. Because the inner rotor 5 is eccentrically positioned relative to the outer rotor 3, a series of sealed chambers are formed at the contact point. The distribution plate 2 slides into the guide groove 7 inside the pump body 1 via the guide post 6 on its outer circumference, ensuring that the distribution plate 2 can slide smoothly within a certain range. The elastic element 8 and guide post 6 apply a certain preload to maintain the stable position of the distribution plate 2. The cooperation between the limiting protrusion 9 and the limiting groove 10 on the distribution plate 2 ensures the stable rotation of the outer rotor 3, preventing it from falling off or shaking. During the operation of the oil pump, due to the radial force generated by the gear set, the distribution plate 2 may be affected by slight displacement. At this time, the guide post 6 guides... The slide is within the groove 7, and at the same time, the elastic element 8 deforms, absorbing and buffering this displacement. When the radial force disappears or decreases, the elastic element 8 uses its excellent flexibility and elastic recovery ability to push the guide column 6 and the oil distribution plate 2 back to their original positions. The elastic sealing sleeve 13 not only prevents oil leakage, but also reduces friction and wear between the oil distribution plate 2 and the pump body 1. The stainless steel alloy oil distribution plate 2 has excellent corrosion resistance and strength, ensuring the stability and reliability of the oil pump during long-term use. The slider 11 can restrict the guide column 6 through the setting of the sliding groove 12, preventing the guide column 6 from rotating and causing the guide column 6 to always move laterally, thereby improving the stability of the movement of the oil distribution plate 2.

[0042] 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0043] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An oil pump with an optimized rotating structure, comprising a pump body (1), characterized in that: The pump body (1) is provided with an oil distribution plate (2) inside. An outer rotor (3) is rotatably connected inside the oil distribution plate (2). A rotor shaft (4) is rotatably connected inside the pump body (1). An inner rotor (5) is fixedly sleeved on the top of the rotor shaft (4). Two guide posts (6) are fixedly connected to the outer circumferential surface of the oil distribution plate (2). Two guide grooves (7) are opened inside the pump body (1). The outer circumferential surface of the guide post (6) is slidably inserted into the pump body (1) through the guide groove (7). Each guide groove (7) is provided with an elastic element (8). The end of the elastic element (8) close to the guide post (6) is fixedly connected to the guide post (6), and the end of the elastic element (8) away from the guide post (6) is fixedly connected to the inner wall of the guide groove (7).

2. The oil pump with an optimized rotating structure according to claim 1, characterized in that: The inner rotor (5) is located inside the outer rotor (3), and the inner rotor (5) meshes with the outer rotor (3).

3. The oil pump with an optimized rotating structure according to claim 1, characterized in that: Both guide posts (6) are located on the axis of the oil distribution plate (2), and the two guide posts (6) are symmetrically arranged.

4. The oil pump with an optimized rotating structure according to claim 1, characterized in that: The outer circumferential surface of the outer rotor (3) is provided with a limiting protrusion (9), and the inner wall of the oil distribution plate (2) is provided with a limiting groove (10). The limiting protrusion (9) is rotatably connected to the oil distribution plate (2) through the limiting groove (10).

5. The oil pump with an optimized rotating structure according to claim 1, characterized in that: Two sliders (11) are fixedly connected to the outer circumference of each guide post (6), and two sliding grooves (12) are opened on the inner wall of each guide groove (7). The sliders (11) are slidably connected to the pump body (1) through the sliding grooves (12).

6. The oil pump with an optimized rotating structure according to claim 1, characterized in that: An elastic sealing sleeve (13) is fixedly fitted onto the outer circumferential surface of the oil distribution plate (2), and the outer surface of the elastic sealing sleeve (13) is fixedly connected to the interior of the pump body (1).

7. The oil pump with an optimized rotating structure according to claim 1, characterized in that: The oil distribution plate (2) is made of stainless steel alloy.

8. The oil pump with an optimized rotating structure according to claim 1, characterized in that: The elastic element (8) is a metal bellows.

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