Sealing structure for oil pump

Abstract

The utility model discloses a sealing structure for an oil pump, which relates to the technical field of oil pumps and comprises an oil pump main body, a connecting cover is arranged at the lower bottom end of the oil pump main body, and a sealing mechanism for improving sealing performance is arranged between the oil pump main body and the connecting cover. According to the engine oil pump, the sealing mechanism is arranged between the engine oil pump main body and the connecting cover, so that the condition of engine oil seepage in the use process can be effectively avoided, and the use of the engine oil pump main body is reduced; according to the sealing mechanism, an elastic sealing gasket and a protruding block are inserted into two inner clamping grooves to form sealing, after the elastic sealing gasket enters the inner clamping grooves, the elastic sealing gasket deforms and achieves the blocking purpose, and then sealant is injected into a sealant groove, so that a sealing plate is connected with an upper mounting frame and a lower mounting frame together; the sealing effect is further improved, and the connectivity is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to machine oil pump technical field, concretely is a kind of sealing structure for machine oil pump. BACKGROUND

[0002] As a key component in modern internal combustion engine system, the machine oil pump plays an important role in delivering machine oil to each lubricating part of the engine. It is usually installed in the engine oil pan or directly driven by the crankshaft. Through precise pumping mechanism, it ensures the circulation of machine oil inside the engine, providing necessary lubrication and cooling for key components such as pistons, cylinder walls and bearings, effectively reducing friction and wear between components, prolonging the service life of the engine, and maintaining the high efficiency and stable operation of the engine.

[0003] In the current structure of machine oil pump, the combination of machine oil pump generally adopts a simple splicing method of pump body and connecting cover. However, this splicing method has a significant problem, i.e. the contact surface between pump body and connecting cover is prone to become a weak link for machine oil leakage. Since the small gap between the contact surfaces cannot be completely eliminated, machine oil can easily seep out of these gaps during high-pressure pumping, resulting in a decrease in the sealing performance of the machine oil pump. The seepage of machine oil not only reduces the working efficiency of the machine oil pump, but also may adversely affect the overall performance of the engine. SUMMARY

[0004] Technical problem to be solved

[0005] The purpose of the utility model is to make up for the shortcomings of the prior art, and to provide a sealing structure for machine oil pump. The sealing mechanism is used to seal the contact surface between the machine oil pump body and the connecting cover, thereby increasing the sealing effect and avoiding the seepage of machine oil during use.

[0006] Technical scheme

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a sealing structure for machine oil pump, comprising a machine oil pump body, a connecting cover is arranged at the lower bottom end of the machine oil pump body, a sealing mechanism for increasing the sealing performance is arranged between the machine oil pump body and the connecting cover, and a plurality of fastening bolts penetrating through the connecting cover are fixedly connected in an annular array on the outer side wall of the machine oil pump body.

[0008] Preferably, the sealing mechanism comprises a sealing plate arranged between the connecting cover and the machine oil pump body, the end of the sealing plate is integrally formed with a protruding block, the end of each of the two protruding blocks is fixedly connected with an elastic sealing gasket capable of deforming, the inside of the machine oil pump body is fixedly connected with an upper mounting bracket, and the inner top end of the connecting cover is fixedly connected with a lower mounting bracket.

[0009] Preferably, the upper mounting frame and the lower mounting frame are internally provided with inner clamping grooves, and the protruding blocks are inserted into the inner clamping grooves, and the elastic sealing gaskets are sealingly connected in the inner clamping grooves.

[0010] Preferably, the opposite sides of the upper mounting frame and the lower mounting frame are fixedly connected with oil-blocking protrusions, and the upper and lower end faces of the sealing plate are provided with oil discharge grooves matched with the oil-blocking protrusions.

[0011] Preferably, the opposite sides of the upper mounting frame and the lower mounting frame and the upper and lower end faces of the sealing plate close to the protruding blocks are provided with glue grooves, and the glue grooves are filled with sealing glue for increasing the sealing performance.

[0012] Preferably, the fastening bolts penetrate the end faces of the sealing plate and the connecting cover, and the lower bottom end of the connecting cover is provided with fastening nuts threadedly connected with the fastening bolts.

[0013] Preferably, the inner diameter of the sealing plate is the same as the inner diameters of the upper mounting frame and the lower mounting frame, and the outer diameter of the sealing plate is the same as the end face size of the connecting cover.

[0014] Beneficial effects:

[0015] Compared with the prior art, the sealing structure for the oil pump has the following beneficial effects:

[0016] Firstly, the sealing mechanism is arranged between the oil pump body and the connecting cover, so that the oil seepage during use is effectively avoided, thereby reducing the use of the oil pump body.

[0017] Secondly, the oil-blocking protrusions and the oil discharge grooves are arranged, the sealing plate covers the top of the oil-blocking protrusions on the lower mounting frame, the oil-blocking protrusions at the lower end of the upper mounting frame are connected with the sealing plate, and the oil seepage is effectively blocked due to the trapezoidal arrangement of the oil-blocking protrusions and the oil discharge grooves.

[0018] Other advantages, objects and features of the present application will be clarified in the following description, and will be apparent to those skilled in the art based on the following description, or can be taught from the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the bottom structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the cross-sectional structure of the oil pump body of this utility model;

[0022] Figure 4 This is a cross-sectional structural diagram of the connecting cover and sealing plate of this utility model;

[0023] Figure 5 This utility model Figure 4 A magnified structural diagram of point A in the middle.

[0024] In the diagram: 1. Oil pump body; 2. Connecting cover; 3. Sealing mechanism; 31. Sealing plate; 311. Protrusion; 312. Elastic sealing gasket; 313. Glue groove; 32. Upper mounting bracket; 33. Lower mounting bracket; 34. Inner groove; 35. Oil drain groove; 36. Oil blocking protrusion; 4. Fastening bolt; 5. Fastening nut. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] like Figure 1 - Figure 5 As shown, this utility model provides a technical solution: a sealing structure for an oil pump, including an oil pump body 1, a connecting cover 2 provided at the bottom end of the oil pump body 1, a sealing mechanism 3 for increasing sealing between the oil pump body 1 and the connecting cover 2, and a plurality of fastening bolts 4 that penetrate the connecting cover 2 are fixedly connected in a ring array to the outer side wall of the oil pump body 1.

[0027] It should be noted that the annular array of fastening bolts 4 on the outer wall of the oil pump body 1 not only provides uniform clamping force, but also achieves a firm connection between the two by penetrating the connecting cover 2. This connection method not only enhances the overall stability of the sealing structure, but also facilitates subsequent maintenance and disassembly, ensuring the reliability and durability of the oil pump body 1 in long-term use. The sealing mechanism 3 and the fastening bolts 4 form a complementary sealing and fixing system. The sealing mechanism 3 ensures the sealing of the oil pump, while the fastening bolts 4 further consolidate this sealing effect through physical tightening.

[0028] like Figure 3 , Figure 4 and Figure 5 As shown, the sealing mechanism 3 includes a sealing plate 31 disposed between the connecting cover 2 and the oil pump body 1. The end of the sealing plate 31 is integrally formed with a protrusion 311. The ends of the two protrusions 311 are fixedly connected with elastic sealing gaskets 312 that can deform. An upper mounting bracket 32 ​​is fixedly connected inside the oil pump body 1. A lower mounting bracket 33 is fixedly connected to the inner top of the connecting cover 2. Both the upper mounting bracket 32 ​​and the lower mounting bracket 33 have an inner groove 34. The protrusions 311 are inserted into the inner groove 34, and the elastic sealing gaskets 312 are sealed and connected inside the inner groove 34.

[0029] It should be noted that the elastic sealing gasket 312, as a key component in the sealing mechanism 3, is designed with materials that ensure it can deform appropriately under pressure, fitting tightly against the wall of the inner groove 34. This deformation sealing mechanism not only effectively prevents oil leakage but also adapts to the small displacements and vibrations generated by the oil pump under different operating conditions, maintaining the durability and stability of the sealing effect. The protrusion 311 at the end of the sealing plate 31 achieves precise insertion and engagement with the inner groove 34 inside the upper mounting bracket 32 ​​and the lower mounting bracket 33. This not only simplifies the installation process and ensures the accurate installation position of the sealing mechanism 3 but also enhances the overall stability of the sealing structure through physical locking. The tight fit between the protrusion 311 and the inner groove 34 further improves the sealing effect and prevents oil leakage.

[0030] like Figure 3 , Figure 4 and Figure 5 As shown, an oil-blocking protrusion 36 is fixedly connected to the side of the upper mounting bracket 32 ​​opposite to the lower mounting bracket 33. Oil drain grooves 35 that cooperate with the oil-blocking protrusions 36 are provided on both the upper and lower end faces of the sealing plate 31. Adhesive grooves 313 are provided on the side of the upper mounting bracket 32 ​​opposite to the lower mounting bracket 33 and on both the upper and lower end faces of the sealing plate 31 near the protrusion 311. The interior of the adhesive grooves 313 is filled with sealant to increase the sealing performance.

[0031] It should be noted that the oil-blocking protrusion 36 is fixedly connected to the opposite side of the upper mounting bracket 32 ​​and the lower mounting bracket 33, forming a clever cooperation with the oil drain grooves 35 opened on the upper and lower end faces of the sealing plate 31. When the oil pump is running, if a small amount of oil seeps into the vicinity of the sealing mechanism 3, the oil-blocking protrusion 36 can effectively block the direct leakage path of the oil, while the oil drain groove 35 provides a channel to guide the oil out, avoiding the accumulation of oil between the sealing plate 31 and the mounting bracket, thereby reducing the risk of oil leakage. The sealant is filled in the glue grooves 313 opened on the opposite side of the upper mounting bracket 32 ​​and the lower mounting bracket 33 and on the upper and lower end faces of the sealing plate 31 near the protrusion 311. This design further improves the sealing performance of the sealing mechanism 3.

[0032] like Figure 1 and Figure 2 As shown, the fastening bolt 4 passes through the end face of the sealing plate 31 and the connecting cover 2, and several fastening nuts 5 are provided at the bottom of the connecting cover 2, which are threadedly connected to the fastening bolt 4. The inner diameter of the sealing plate 31 is the same as the inner diameter of the upper mounting bracket 32 ​​and the lower mounting bracket 33, and the outer diameter of the sealing plate 31 is the same as the end face size of the connecting cover 2.

[0033] It should be noted that the fastening bolt 4 passes through the sealing plate 31 and the connecting cover 2, and is threadedly connected to the fastening nut 5 located at the bottom of the connecting cover 2. This not only ensures a tight fit between the sealing plate 31, the connecting cover 2 and the oil pump body 1, but also enhances the stability of the entire sealing structure through a physical locking mechanism. During the operation of the oil pump, the fastening bolt 4 and the fastening nut 5 can effectively resist the loosening tendency caused by vibration and impact, and maintain the durability of the sealing effect.

[0034] Working Principle: Between the oil pump body 1 and the connecting cover 2, the sealing mechanism 3 aims to fundamentally solve the problem of oil leakage, thereby extending the service life of the oil pump body 1. This seal is achieved by inserting an elastic sealing gasket 312 and a protruding block 311 into two inner grooves 34. When the elastic sealing gasket 312 enters the inner groove 34, its material properties allow it to deform appropriately, tightly adhering to the wall of the inner groove 34, effectively preventing oil penetration. Furthermore, to further enhance the sealing effect, adhesive grooves 313 are formed on the opposite sides of the upper mounting bracket 32 ​​and lower mounting bracket 33, as well as on the upper and lower end faces of the sealing plate 31 near the protruding block 311. These grooves are filled with sealant. After curing, the sealant forms a tough and elastic sealing layer, further tightly connecting the sealing plate 31 to the upper mounting bracket 32 ​​and lower mounting bracket 33, thus improving sealing performance. This design also enhances the structural connectivity, ensuring the stability and reliability of the oil pump during operation. The oil-blocking protrusions 36 are fixedly connected to the opposite sides of the upper mounting bracket 32 ​​and the lower mounting bracket 33, respectively. The upper and lower end faces of the sealing plate 31 are provided with oil drain grooves 35 that cooperate with the oil-blocking protrusions 36. When the sealing plate 31 covers the top of the oil-blocking protrusions 36 on the lower mounting bracket 33 and connects with the oil-blocking protrusions 36 at the lower end of the upper mounting bracket 32, the three form a tight contact. Since both the oil-blocking protrusions 36 and the oil drain grooves 35 adopt a trapezoidal design, this structure not only increases the contact area and improves the sealing effect, but also effectively blocks the seepage path of the oil. Even if a small amount of oil seeps into this area, it will be blocked by the barrier formed by the oil-blocking protrusions 36 and the oil drain grooves 35, and guided to a safe area through the oil drain grooves 35, thus avoiding oil leakage and ensuring the efficient and stable operation of the oil pump.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sealing structure for an oil pump, comprising an oil pump body (1), characterized in that: The bottom end of the oil pump body (1) is provided with a connecting cover (2), and a sealing mechanism (3) to increase the sealing is provided between the oil pump body (1) and the connecting cover (2). A number of fastening bolts (4) that penetrate the connecting cover (2) are fixedly connected to the outer side wall of the oil pump body (1) in an annular array.

2. The sealing structure for an oil pump according to claim 1, characterized in that: The sealing mechanism (3) includes a sealing plate (31) disposed between the connecting cover (2) and the oil pump body (1). The end of the sealing plate (31) is integrally formed with a protrusion (311). The ends of the two protrusions (311) are fixedly connected with elastic sealing gaskets (312) that can deform. The oil pump body (1) is fixedly connected with an upper mounting bracket (32), and the inner top of the connecting cover (2) is fixedly connected with a lower mounting bracket (33).

3. A sealing structure for an oil pump according to claim 2, characterized in that: Both the upper mounting bracket (32) and the lower mounting bracket (33) have an inner slot (34) inside, and the protrusion (311) is inserted into the inner slot (34), and the elastic sealing gasket (312) is sealed and connected to the inner slot (34).

4. A sealing structure for an oil pump according to claim 3, characterized in that: An oil-blocking protrusion (36) is fixedly connected to the side opposite to the lower mounting bracket (33) of the upper mounting bracket (32), and an oil drain groove (35) is provided on both the upper and lower end faces of the sealing plate (31) to cooperate with the oil-blocking protrusion (36).

5. A sealing structure for an oil pump according to claim 4, characterized in that: The upper mounting bracket (32) and the lower mounting bracket (33) opposite to each other, as well as the upper and lower end faces of the sealing plate (31) near the protrusion (311), are provided with glue grooves (313), and the inside of the glue grooves (313) is filled with sealant to increase the sealing performance.

6. A sealing structure for an oil pump according to claim 2, characterized in that: The fastening bolt (4) penetrates the end face of the sealing plate (31) and the connecting cover (2), and a plurality of fastening nuts (5) are provided at the bottom end of the connecting cover (2) and are threadedly connected to the fastening bolt (4).

7. A sealing structure for an oil pump according to claim 2, characterized in that: The inner diameter of the sealing plate (31) is the same as that of the upper mounting bracket (32) and the lower mounting bracket (33), and the outer diameter of the sealing plate (31) is the same as that of the end face of the connecting cover (2).

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