Oil pump

Abstract

The utility model relates to the technical field of oil pump equipment, and provides an oil pump which comprises a pump body, a shaft hole of the pump body is connected with an installation ring and forms an oil way gap, and the oil way gap is communicated with a piston hole and an oil pumping hole which are formed in the shaft body of the pump body. The oil way gap is communicated with a small oil injection pipe, and the small oil injection pipe is further communicated with an impeller chamber of the pump body. By means of the piston hole, the oil pumping hole and the oil outlet hole, oil in the two pipelines can be converged at the position of the small oil injection pipe by sharing the small oil injection pipe, the oil supply pressure of each pipeline can be changed, uniform and stable oil pressure can be formed, and therefore the oil supply efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil pump equipment, specifically to an oil pump. Background Art

[0002] A sewing machine is a machine that stitches sewing materials through sewing threads, including a needle bar mechanism, a thread take-up mechanism, a feeding mechanism, a thread hooking mechanism, a pressing mechanism, a winding device, a lubricating device, etc. During its working process, an oil pump is required to supply oil to the parts inside the sewing machine to prevent metal parts from stopping working due to heat generated during high-speed operation. The existing oil pump adopts single-tube oil supply. When working at high speed or under heavy load, the single oil circuit system cannot provide uniform and stable oil pressure, resulting in insufficient oil pressure at some lubrication points and affecting the oil supply effect. Therefore, we propose an oil pump. Content of the Utility Model

[0003] (1) Technical Problems to be Solved

[0004] In view of the deficiencies of the prior art, the utility model provides an oil pump, which overcomes the deficiencies of the prior art, is reasonably designed and has a compact structure, and solves the problems raised in the background art.

[0005] (2) Technical Solutions

[0006] To achieve the above objectives, the utility model is realized through the following technical solutions:

[0007] An oil pump, including a pump body, an installation ring is connected to the shaft hole of the pump body to form an oil passage gap, and the oil passage gap is communicated with a piston hole and an oil suction hole opened on the shaft body of the pump body;

[0008] An oil injection small tube is communicated with the oil passage gap, and the oil injection small tube is also communicated with the impeller chamber of the pump body.

[0009] Preferably, the piston hole and the oil suction hole are radially communicated on the distribution plate.

[0010] Preferably, the inner wall of the side wall of the impeller chamber is provided with a groove, and an oil outlet hole communicated with the oil injection small tube is opened on the groove.

[0011] Preferably, the oil outlet hole is arranged along the axial direction of the pump body.

[0012] Preferably, an oil drain port and an oil suction hole are opened on the inner wall of the shaft hole of the pump body, and the oil drain port and the oil suction hole are arranged oppositely.

[0013] Preferably, a pressure relief hole is opened on the side wall of the impeller chamber of the pump body.

[0014] Preferably, a distribution plate is communicated with the impeller chamber of the pump body, and an oil supply hole is communicated with the distribution plate.

[0015] Preferably, the arc-shaped flange provided on the flow distribution plate extends along the axial surface side of the pump body, and an oil supply groove path is provided between the pump body and the flow distribution plate through the arc-shaped flange.

[0016] (III) Advantageous Effects

[0017] The embodiment of the present utility model provides an oil pump. It has the following advantageous effects:

[0018] 1. By providing the piston holes, oil extraction holes, and oil outlet holes, the oil in the two pipelines can converge at the injection small pipe through the shared injection small pipe, which can change the oil supply pressure of each pipeline and form a uniform and stable oil pressure, thereby improving the oil supply efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the present utility model;

[0020] Figure 2 is the present utility model Figure 1 schematic diagram from another perspective;

[0021] Figure 3 is the present utility model passing through Figure 1 side view schematic diagram;

[0022] Figure 4 is the present utility model Figure 3 sectional schematic diagram of line A-A;

[0023] Figure 5 is the present utility model Figure 3 sectional schematic diagram of line B-B.

[0024] In the figure: 1. Pump body; 11. Installation ring; 12. Piston hole; 13. Oil extraction hole; 14. Injection small pipe; 15. Oil outlet hole; 16. Groove; 2. Flow distribution plate; 21. Oil supply hole; 22. Pressure relief hole; 23. Oil discharge port; 24. Oil suction hole. SPECIFIC EMBODIMENTS

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0026] Refer to the attached Figures 1-5, The oil pump includes a pump body 1. An installation ring 11 is connected to the shaft hole of the pump body 1 to form an oil passage gap. The oil passage gap is arranged around the shaft hole of the pump body 1 and is connected to a piston hole 12 and an oil suction hole 13 opened on the shaft body of the pump body 1. The piston hole 12 and the oil suction hole 13 are radially connected on a distribution disk 2. An oil injection small tube 14 is connected to the oil passage gap, and the oil injection small tube 14 is also connected to the impeller chamber of the pump body 1. The impeller chamber is connected to an oil supply hole 21. A check valve is also sleeved on the oil supply pipe 21 to prevent the oil from flowing back into the oil supply pipe 21 when the pump body 1 stops working. The oil supply hole 21 is connected to the oil injection small tube 14, and the piston hole 12, the oil suction hole 13, and the oil injection small tube 14 are interconnected. After the piston hole 12 sucks oil into the oil pump, part of the oil after the piston movement is extracted by the oil suction hole 13, and the other part is sprayed by the oil injection small tube 14 to cool important parts, forming a double pipeline between them. Through the shared oil injection small tube 14, the oil in the two pipelines can converge at the oil injection small tube 14 to form a stable oil flow, thus improving the oil supply efficiency. The two pipelines share one oil injection small tube 14, and each pipeline can still independently adjust the oil supply pressure to ensure that each lubrication point can obtain appropriate oil pressure under different working conditions, which helps to optimize the oil distribution and reduce the lubrication deficiency problem caused by uneven oil supply, thereby improving the lubrication effect. Compared with a completely independent double pipeline system, the design of sharing the oil injection small holes reduces the number of pipelines and connection components, simplifies the overall structure of the system, and reduces the complexity of installation and maintenance.

[0027] In this embodiment, a groove 16 is provided inward on the side wall of the impeller chamber. The groove 16 facilitates the entry of oil. An oil outlet hole 15 connected to the oil injection small tube 14 is opened on the groove 16, and the oil outlet hole 15 is arranged along the axial direction of the pump body 1.

[0028] In this embodiment, an oil drain port 23 and an oil suction hole 24 are opened on the inner wall of the shaft hole of the pump body 1. The oil drain port 23 and the oil suction hole 24 are arranged opposite to each other, and the relative arrangement of the oil drain port 23 and the oil suction hole 24 allows the oil to form a circulation in the pump body.

[0029] In this embodiment, a pressure relief hole 22 is opened on the side wall of the impeller chamber of the pump body 1. The impeller chamber is a chamber for accommodating the impeller, and the side wall of the impeller chamber is on the axial side of the pump body 1.

[0030] In this embodiment, a distribution disk 2 is connected to the impeller chamber of the pump body 1. An oil supply hole 21 is connected to the distribution disk 2. The oil supply hole 21 is connected to the impeller chamber of the pump body 1. The oil supply hole 21 admits oil, and the oil suction hole 24 discharges oil, making the oil circuit form a loop.

[0031] Further, the arc-shaped flange provided on the distribution disk 2 extends along the axial side of the pump body 1. An oil supply groove path is provided between the pump body 1 and the distribution disk 2 through the arc-shaped flange.

[0032] It should be noted that, in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element. [[ID=].]

[0033] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An oil pump comprising a pump body (1), characterized in that: A mounting ring (11) is connected to the shaft hole of the pump body (1) to form an oil passage gap, and the oil passage gap is communicated with a piston hole (12) and an oil extraction hole (13) provided on the shaft of the pump body (1); The oil passage gap is connected to an oil injection pipe (14), and the oil injection pipe (14) is also connected to the impeller chamber of the pump body (1).

2. The oil pump according to claim 1, wherein: The piston hole (12) and the oil extraction hole (13) are radially connected on the distribution plate (2).

3. The oil pump according to claim 1, wherein: A groove (16) is provided inwardly on the side wall of the impeller chamber, and an oil outlet hole (15) communicating with the oil injection pipe (14) is provided on the groove (16).

4. The oil pump according to claim 3, wherein: The oil outlet hole (15) is arranged along the axial direction of the pump body (1).

5. The oil pump according to claim 1, wherein: An oil discharge port (23) and an oil suction hole (24) are provided on the inner wall of the shaft hole of the pump body (1), and the oil discharge port (23) and the oil suction hole (24) are arranged opposite to each other.

6. The oil pump according to claim 1, wherein: A pressure relief hole (22) is provided on the side wall of the impeller chamber of the pump body (1).

7. The oil pump according to any one of claims 1 to 6, characterized in that: The impeller chamber of the pump body (1) is connected to a distribution plate (2), and the distribution plate (2) is connected to an oil supply hole (21).

8. The oil pump according to claim 7, wherein: The arc-shaped flange provided on the distribution plate (2) extends along the axial surface side of the pump body (1), and an oil supply groove is provided between the pump body (1) and the distribution plate (2) through the arc-shaped flange.

Images