Novel single-cylinder pump body structure

Abstract

The utility model relates to the technical field of single-cylinder pump bodies, in particular to a novel single-cylinder pump body structure which comprises an oil mass sleeve positioning portion, a pump body positioning portion, a flange plate, a small cylinder and a large cylinder, the pump body positioning portion is arranged at the top of the oil mass sleeve positioning portion, and the flange plate is arranged on the pump body positioning portion. A large cylinder is arranged at the top of the pump body positioning part, a small cylinder is arranged at the top of the large cylinder, a flange plate is arranged at the connecting position of the pump body positioning part and the large cylinder, the bottom face of the flange plate is a pump body mounting face, the pump body mounting face is provided with four edges, and every two adjacent edges are connected through an arc-shaped section. According to the single-cylinder plunger pump, the pump body mounting surfaces in different shapes are arranged, so that the problem that a sealing surface needs to be covered by a connecting plate is solved, and the pump body of the single-cylinder plunger pump is convenient to mount; and the oil return pipe mounting hole and the oil inlet pipe mounting hole are formed, so that the problem of unsmooth oil feeding at high speed caused by mounting deformation is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of single-cylinder pump bodies, in particular to a novel single-cylinder pump body structure. Background Art

[0002] The existing pump body mounting flange is small, and a connecting plate needs to be added to cover the sealing surface. The oil return and oil inlet holes of the pump body are the same during operation, which will cause poor oil inlet at high speeds. If the hole is deformed when the pump assembly is installed, the oil pump will not work properly. In order to avoid the oil pump not working properly due to deformation of the hole during installation.

[0003] Therefore, the utility model provides a novel single-cylinder pump body structure. Utility Model Content

[0004] The utility model provides a novel single-cylinder pump body structure to solve the above technical problems.

[0005] In order to achieve the above-mentioned purpose, an embodiment of the utility model provides a new single-cylinder pump body structure, including: an oil volume sleeve positioning part, a pump body positioning part, a flange, a small cylindrical barrel and a large cylindrical barrel, the pump body positioning part is arranged on the top of the oil volume sleeve positioning part, the top of the pump body positioning part is provided with a large cylindrical barrel, and the top of the large cylindrical barrel is provided with a small cylindrical barrel, a flange is arranged at the connecting position of the pump body positioning part and the large cylindrical barrel, the bottom surface of the flange is the pump body mounting surface, and two assembly holes symmetrical along the center line of the small cylindrical barrel are arranged on the pump body mounting surface, and the pump body mounting surface has four edges, and two adjacent edges are connected by an arc segment.

[0006] Furthermore, the four sides of the pump body mounting surface are a, b, c and d respectively, the length of a is equal to the length of b, the length of c is equal to the length of d, and the length of a is greater than the length of c.

[0007] Furthermore, the four sides of the pump body mounting surface are a, b, c and d respectively, the length of a is smaller than the length of b, and the length of c is equal to the length of d.

[0008] Furthermore, the four sides of the pump body mounting surface are a, b, c and d respectively, the length of a is greater than the length of b, and the length of c is equal to the length of d.

[0009] Furthermore, the large cylindrical barrel is provided with an oil return pipe mounting hole and an oil inlet pipe mounting hole.

[0010] Furthermore, a threaded hole is provided at the center of the small cylindrical tube.

[0011] Furthermore, the top surface of the large cylindrical barrel is provided with a first conical surface, and the bottom surface of the pump body positioning portion is provided with a second conical surface.

[0012] Furthermore, a backing groove is provided on the surface of the pump body positioning portion.

[0013] Furthermore, a pin hole is provided on the bottom surface of the pump body positioning portion.

[0014] Furthermore, a small middle hole and a large middle hole are formed at the center positions of the oil volume sleeve positioning portion, the pump body positioning portion, the small cylindrical tube and the large cylindrical tube, the oil inlet pipe mounting hole is connected to the small middle hole through the oil inlet hole, and the oil return pipe mounting hole is connected to the large middle hole and the small middle hole through the oil return hole.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] By setting the pump body installation surface of different shapes, the problem of needing a connecting plate to cover the sealing surface is solved, making the single-cylinder plunger pump body easier to install;

[0017] By setting the oil return pipe mounting hole and the oil inlet pipe mounting hole, the phenomenon that the oil pump cannot work normally due to deformation of the center hole during installation is avoided, and the problem of poor oil supply at high speed caused by installation deformation is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 This is a front view of a novel single-cylinder pump body structure of the utility model;

[0020] Figure 2 A three-dimensional diagram of an optimal embodiment of a novel single-cylinder pump body structure of the utility model;

[0021] Figure 3 This is a bottom view of a novel single-cylinder pump body structure of the utility model;

[0022] Figure 4 This is a front cross-sectional view of a novel single-cylinder pump body structure of the utility model;

[0023] Figure 5 It is a cross-sectional view of the large cylindrical barrel of the utility model;

[0024] Figure 6 This is a structural diagram of the first embodiment of the flange of the utility model;

[0025] Figure 7 This is a structural diagram of a second embodiment of the flange of the utility model;

[0026] Figure 8 This is a structural diagram of the third embodiment of the flange of the utility model.

[0027] Among them, 1. Oil volume sleeve positioning part; 2. Oil return pipe mounting hole; 3. Oil inlet pipe mounting hole; 4. Small cylindrical tube; 5. Threaded hole; 6. First conical surface; 7. Large cylindrical tube; 8. Flange; 9. Mounting hole; 10. Pump body positioning part; 11. Back-cut groove; 12. Second conical surface; 14. Pin hole; 16. Small middle hole; 17. Large middle hole; 18. Oil inlet hole; 19. Oil return hole; 21. Pump body mounting surface. DETAILED DESCRIPTION

[0028] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0029] See also Figure 1 .like Figure 1 As shown, at least one embodiment provides a new type of single-cylinder pump body structure, a mounting flange 8 is provided in the middle part of the pump body, the mounting flange 8 is provided with an assembly hole 9 and a mounting hole 13 for fixing the pump body, a large cylindrical barrel 7 and a small cylindrical barrel 4 are provided on the upper part of the mounting flange 8, an oil return pipe mounting hole 2 and an oil inlet pipe mounting hole 3 are provided on the large cylindrical barrel 7, the distances from the centers of the oil return pipe mounting hole 2 and the oil inlet pipe mounting hole 3 to the pump body mounting surface 21 are the same, and the distance is D (13≤D≤16), a threaded hole 5 is provided on the top of the small cylindrical barrel 4, a first conical surface 6 transition is provided between the large cylindrical barrel 7 and the small cylindrical barrel 4, an oil quantity sleeve positioning part 1 and a pump body positioning part 10 are provided below the mounting flange 8, a second conical surface 12 transition is provided between the oil quantity sleeve positioning part 1 and the pump body positioning part 10, and a back-off groove 11 is provided between the pump body positioning part 10 and the mounting flange 8 to ensure that the outer diameters of the pump body positioning part 10 are consistent. The mounting flange 8 can have different shapes, one side of the mounting flange 8 is larger than the other side, a pin hole 14 is provided on the lower end surface of the pump body positioning portion 10, a threaded hole 5 is provided in the middle upper part of the pump body, a small middle hole 16 is provided in the middle part, and a large middle hole 17 is provided in the lower part, the diameter of the small middle hole 16 is smaller than the diameter of the large middle hole 17, the length of the large middle hole 17 is not less than the length of the oil sleeve positioning portion 1, the oil inlet pipe mounting hole 3 and the small middle hole 16 are connected by the oil inlet hole 18, and the oil return pipe mounting hole 2 and the small middle hole 16 are connected by the oil return hole 19.

[0030] In the first embodiment, specifically, the pump body comprises: an oil volume sleeve positioning portion 1, a pump body positioning portion 10, a flange 8, a small cylindrical tube 4 and a large cylindrical tube 7. The pump body positioning portion 10 is arranged at the top of the oil volume sleeve positioning portion 1, and the bottom surface of the pump body positioning portion 10 is provided with a second conical surface 12. A backing groove 11 is provided on the surface of the pump body positioning portion 10. A pin hole 14 is provided on the bottom surface of the pump body positioning portion 10.

[0031] A large cylindrical barrel 7 is arranged on the top of the pump body positioning part 10, and an oil return pipe mounting hole 2 and an oil inlet pipe mounting hole 3 are arranged on the large cylindrical barrel 7. A small cylindrical barrel 4 is arranged on the top of the large cylindrical barrel 7, and a first conical surface 6 is arranged on the top surface of the large cylindrical barrel 7, and a threaded hole 5 is arranged at the center position of the small cylindrical barrel 4.

[0032] A flange 8 is provided at the connection position between the pump body positioning portion 10 and the large cylindrical tube 7. The bottom surface of the flange 8 is a pump body mounting surface 21. Two assembly holes 9 symmetrical along the center line of the small cylindrical tube 4 are provided on the pump body mounting surface 21. The pump body mounting surface 21 has four sides, and two adjacent sides are connected by an arc segment. The four sides of the pump body mounting surface 21 are a, b, c and d in sequence. The length of a is equal to the length of b, the length of c is equal to the length of d, and the length of a is greater than the length of c.

[0033] A small middle hole 16 and a large middle hole 17 are formed at the center positions of the oil volume sleeve positioning part 1, the pump body positioning part 10, the small cylindrical tube 4 and the large cylindrical tube 7. The oil inlet pipe mounting hole 3 is connected to the small middle hole 16 via the oil inlet hole 18, and the oil return pipe mounting hole 2 is connected to the large middle hole 17 and the small middle hole 16 via the oil return hole 19.

[0034] In the second embodiment, the pump body comprises: an oil volume sleeve positioning portion 1, a pump body positioning portion 10, a flange 8, a small cylindrical tube 4 and a large cylindrical tube 7. The pump body positioning portion 10 is arranged on the top of the oil volume sleeve positioning portion 1, and a second conical surface 12 is arranged on the bottom surface of the pump body positioning portion 10. A backing groove 11 is provided on the surface of the pump body positioning portion 10. A pin hole 14 is arranged on the bottom surface of the pump body positioning portion 10.

[0035] A large cylindrical barrel 7 is arranged on the top of the pump body positioning part 10, and an oil return pipe mounting hole 2 and an oil inlet pipe mounting hole 3 are arranged on the large cylindrical barrel 7. A small cylindrical barrel 4 is arranged on the top of the large cylindrical barrel 7, and a first conical surface 6 is arranged on the top surface of the large cylindrical barrel 7, and a threaded hole 5 is arranged at the center position of the small cylindrical barrel 4.

[0036] A flange 8 is provided at the connection position between the pump body positioning portion 10 and the large cylindrical tube 7. The bottom surface of the flange 8 is a pump body mounting surface 21. Two assembly holes 9 symmetrical along the center line of the small cylindrical tube 4 are provided on the pump body mounting surface 21. The pump body mounting surface 21 has four sides, and two adjacent sides are connected by an arc segment. The four sides of the pump body mounting surface 21 are a, b, c and d in sequence. The length of a is less than the length of b, and the length of c is equal to the length of d.

[0037] A small middle hole 16 and a large middle hole 17 are formed at the center positions of the oil volume sleeve positioning part 1, the pump body positioning part 10, the small cylindrical tube 4 and the large cylindrical tube 7. The oil inlet pipe mounting hole 3 is connected to the small middle hole 16 via the oil inlet hole 18, and the oil return pipe mounting hole 2 is connected to the large middle hole 17 and the small middle hole 16 via the oil return hole 19.

[0038] In the third embodiment, the pump body comprises: an oil volume sleeve positioning part 1, a pump body positioning part 10, a flange 8, a small cylindrical tube 4 and a large cylindrical tube 7. The pump body positioning part 10 is arranged on the top of the oil volume sleeve positioning part 1, and a second conical surface 12 is arranged on the bottom surface of the pump body positioning part 10. A backing groove 11 is provided on the surface of the pump body positioning part 10. A pin hole 14 is arranged on the bottom surface of the pump body positioning part 10.

[0039] A large cylindrical barrel 7 is arranged on the top of the pump body positioning part 10, and an oil return pipe mounting hole 2 and an oil inlet pipe mounting hole 3 are arranged on the large cylindrical barrel 7. A small cylindrical barrel 4 is arranged on the top of the large cylindrical barrel 7, and a first conical surface 6 is arranged on the top surface of the large cylindrical barrel 7, and a threaded hole 5 is arranged at the center position of the small cylindrical barrel 4.

[0040] A flange 8 is provided at the connection position between the pump body positioning portion 10 and the large cylindrical tube 7. The bottom surface of the flange 8 is a pump body mounting surface 21. Two assembly holes 9 symmetrical along the center line of the small cylindrical tube 4 are provided on the pump body mounting surface 21. The pump body mounting surface 21 has four sides, and two adjacent sides are connected by an arc segment. The four sides of the pump body mounting surface 21 are a, b, c and d in sequence. The length of a is greater than the length of b, and the length of c is equal to the length of d.

[0041] A small middle hole 16 and a large middle hole 17 are formed at the center positions of the oil volume sleeve positioning part 1, the pump body positioning part 10, the small cylindrical tube 4 and the large cylindrical tube 7. The oil inlet pipe mounting hole 3 is connected to the small middle hole 16 via the oil inlet hole 18, and the oil return pipe mounting hole 2 is connected to the large middle hole 17 and the small middle hole 16 via the oil return hole 19.

[0042] To sum up, by setting pump body mounting surfaces 21 of different shapes, the problem of needing a connecting plate to cover the sealing surface is solved, making the single-cylinder plunger pump body easy to install; by setting the return oil pipe mounting hole 2 and the inlet oil pipe mounting hole 3, the phenomenon of the oil pump not being able to work normally due to deformation of the center hole during installation is avoided, and the problem of poor oil inlet at high speed caused by installation deformation is solved.

[0043] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without departing from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A new type of single-cylinder pump body structure, characterized in that: include: An oil volume sleeve positioning portion (1), a pump body positioning portion (10), a flange (8), a small cylindrical barrel (4) and a large cylindrical barrel (7), wherein the pump body positioning portion (10) is arranged at the top of the oil volume sleeve positioning portion (1), a large cylindrical barrel (7) is arranged at the top of the pump body positioning portion (10), and a small cylindrical barrel (4) is arranged at the top of the large cylindrical barrel (7), a flange (8) is arranged at the connection position between the pump body positioning portion (10) and the large cylindrical barrel (7), the bottom surface of the flange (8) is a pump body mounting surface (21), and two assembly holes (9) symmetrically arranged along the center line of the small cylindrical barrel (4) are arranged on the pump body mounting surface (21), and the pump body mounting surface (21) has four edges, and two adjacent edges are connected by an arc segment.

2. A novel single-cylinder pump body structure as claimed in claim 1, characterized in that: The four sides of the pump body installation surface (21) are a, b, c and d in sequence, the length of a is equal to the length of b, the length of c is equal to the length of d, and the length of a is greater than the length of c.

3. A novel single-cylinder pump body structure as claimed in claim 1, characterized in that: The four sides of the pump body installation surface (21) are a, b, c and d in sequence, the length of a is smaller than the length of b, and the length of c is equal to the length of d.

4. A novel single-cylinder pump body structure as claimed in claim 1, characterized in that: The four sides of the pump body installation surface (21) are a, b, c and d in sequence, the length of a is greater than the length of b, and the length of c is equal to the length of d.

5. A novel single-cylinder pump body structure according to any one of claims 1 to 4, characterized in that: The large cylindrical barrel (7) is provided with an oil return pipe mounting hole (2) and an oil inlet pipe mounting hole (3).

6. A novel single-cylinder pump body structure as claimed in claim 1, characterized in that: A threaded hole (5) is provided at the center of the small cylindrical tube (4).

7. A novel single-cylinder pump body structure as claimed in claim 1, characterized in that: The top surface of the large cylindrical barrel (7) is provided with a first conical surface (6), and the bottom surface of the pump body positioning portion (10) is provided with a second conical surface (12).

8. A novel single-cylinder pump body structure as claimed in claim 1, characterized in that: A cutter retreat groove (11) is provided on the surface of the pump body positioning portion (10).

9. A novel single-cylinder pump body structure as claimed in claim 1, characterized in that: The bottom surface of the pump body positioning portion (10) is provided with a pin hole (14).

10. A novel single-cylinder pump body structure as claimed in claim 5, characterized in that: A small middle hole (16) and a large middle hole (17) are formed at the center positions of the oil volume sleeve positioning portion (1), the pump body positioning portion (10), the small cylindrical tube (4) and the large cylindrical tube (7); the oil inlet pipe mounting hole (3) and the small middle hole (16) are connected via an oil inlet hole (18); and the oil return pipe mounting hole (2) and the large middle hole (17) and the small middle hole (16) are connected via an oil return hole (19).

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