An oil leak-proof valve stem

Abstract

This utility model belongs to the field of valve stem technology, and particularly relates to an oil-leakage-proof valve stem. One end of the stem is a connecting part with a connecting hole and an internal thread for connecting with a drive component. The other end is a mounting part, which fixes the valve stem to a fixed component such as the cylinder end cap of an oil cylinder or pneumatic cylinder. Several oil storage grooves are provided in the middle of the stem, and the number of oil storage grooves can be set according to different needs. An oil storage component for storing lubricating oil is sleeved inside the oil storage groove. When the valve stem reciprocates in the oil cylinder or pneumatic cylinder, the oil storage component is squeezed by the inner wall of the cylinder, and the lubricating oil inside the oil storage component flows out from the end of the oil storage component to lubricate the stem, achieving continuous lubrication. The connection between the stem and the mounting part is inclined to reduce movement resistance. At the same time, the inclined surface can slow down the loss of lubricating oil when the valve stem reciprocates in the vertical direction.

Description

Technical Field

[0001] This utility model belongs to the field of valve stem technology, and in particular relates to an oil-leakage-proof valve stem. Background Technology

[0002] In hydraulic or pneumatic cylinders, the valve stem is the core moving component, and its lubrication performance directly affects the stability and service life of the equipment. Existing valve stem lubrication structures usually use surface coating with lubricating oil or simple oil grooves for lubrication. However, the lubricating oil is easily lost due to the reciprocating motion of the valve stem, resulting in a decrease in lubrication effect. Utility Model Content

[0003] The purpose of this utility model is to provide an oil-leakage-proof valve stem to address the aforementioned technical problems and solve the issues raised in the background art.

[0004] In view of this, the present invention provides an oil leak-proof valve stem, wherein a connecting part is fixedly provided at one end of the stem body and an installation part is fixedly provided at the other end, and the connection between the stem body and the installation part is inclined.

[0005] Oil storage tanks are provided in the middle of the rod body;

[0006] The oil reservoir contains an oil storage component for storing lubricating oil. When the oil storage component is squeezed, the lubricating oil inside the oil storage component will flow out from the end of the oil storage component to lubricate the rod.

[0007] In the above technical solution, the oil storage component is further composed of an extrusion part and a rolled edge part. The cross-section of the extrusion part is arc-shaped, and the rolled edge part is fixedly connected to both sides of the extrusion part. The cross-section of the rolled edge part is semi-circular, and part of the rolled edge part is in contact with the end wall of the oil storage tank. An oil storage space is formed between the extrusion part, the two rolled edge parts and the oil storage tank.

[0008] In the above technical solution, the diameter of the extrusion section is larger than the diameter of the rod.

[0009] In the above technical solution, furthermore, a wear-resistant plate is fixedly sleeved on the outer surface of the oil reservoir.

[0010] In the above technical solution, furthermore, the extrusion part and the wear-resistant sheet are provided with a connection hole, and an injection oil plug is fixedly connected to the connection hole.

[0011] Furthermore, the above technical solution also includes:

[0012] The lubrication ring grooves are distributed on the outside of the rod body and are located close to the oil reservoir.

[0013] In the above technical solution, the extrusion part and the rolled edge part are integrally formed.

[0014] In the above technical solution, furthermore, several oil outlet grooves are opened on both sides of the oil storage tank.

[0015] The beneficial effects of this utility model are as follows:

[0016] 1. When the valve stem reciprocates in the oil cylinder or air cylinder, the oil reservoir is squeezed by the inner wall of the cylinder, and the lubricating oil inside the oil reservoir flows out from the end of the oil reservoir to lubricate the stem, thus achieving continuous lubrication.

[0017] 2. Wear-resistant plates are fixedly fitted on the outer surface of the oil reservoir. The wear-resistant plates can enhance the wear resistance and prevent damage caused by excessive friction during the reciprocating motion of the extrusion part.

[0018] 3. Several oil outlet grooves are provided on both sides of the oil storage tank to facilitate the outflow of lubricating oil. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a structural cross-sectional view of the present invention;

[0021] Figure 3 This is a utility model Figure 2 A magnified view of a section at point A in the middle;

[0022] The markings in the diagram are as follows: 1-rod body, 2-connecting part, 3-mounting part, 4-oil reservoir, 6-oil reservoir component, 7-sloping surface, 8-extrusion part, 9-rolled edge part, 10-wear-resistant plate, 11-injection plug, 12-lubricating ring groove, 13-oil outlet groove. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0024] Example 1:

[0025] This embodiment provides an oil leakage prevention valve stem, including:

[0026] The rod body 1 has a connecting part 2 fixedly installed at one end and an installation part 3 fixedly installed at the other end. The connection between the rod body 1 and the installation part 3 is an inclined surface 7.

[0027] Oil storage tank 4, several oil storage tanks 4 are opened in the middle of the rod body 1;

[0028] The oil storage component 6 is installed inside the oil storage tank 4 to store lubricating oil. When the oil storage component 6 is squeezed, the lubricating oil inside the oil storage component 6 will flow out from the end of the oil storage component 6 to lubricate the rod body 1.

[0029] As can be seen in this embodiment, one end of the rod body 1 is a connecting part 2, which has a connecting hole with an internal thread for connecting with the drive component. The other end is a mounting part 3, which is used to fix the valve rod to a fixed component such as the cylinder end cap of the oil cylinder or air cylinder. Several oil storage grooves 4 are provided in the middle of the rod body 1. The two ends of the oil storage grooves 4 are rounded. The number of oil storage grooves 4 can be set according to different needs. An oil storage component 6 for storing lubricating oil is sleeved inside the oil storage groove 4. When the valve rod reciprocates in the oil cylinder or air cylinder, the oil storage component 6 will be squeezed by the inner wall of the cylinder. The lubricating oil inside the oil storage component 6 will flow out from the end of the oil storage component 6 to lubricate the rod body 1, so as to achieve continuous lubrication. The connection between the rod body 1 and the mounting part 3 is inclined 7 to reduce the movement resistance. At the same time, the inclined surface 7 can slow down the loss of lubricating oil when the valve rod reciprocates in the vertical direction.

[0030] Example 2:

[0031] This embodiment provides an oil leakage prevention valve stem, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0032] The oil storage component 6 is composed of an extrusion part 8 and a rolled edge part 9. The cross-section of the extrusion part 8 is arc-shaped, and the rolled edge part 9 is fixedly connected to both sides of the extrusion part 8. The cross-section of the rolled edge part 9 is semi-circular, and part of the rolled edge part 9 is in contact with the end wall of the oil storage tank 4. An oil storage space is formed between the extrusion part 8, the two rolled edge parts 9 and the oil storage tank 4.

[0033] As can be seen in this embodiment, the oil storage component consists of an extrusion part 8 and a rolled edge part 9. The cross-section of the extrusion part 8 is arc-shaped, and the rolled edge part 9 is integrally formed on both sides of the extrusion part 8. The cross-section of the rolled edge part 9 is semi-circular, and part of the rolled edge part 9 is in contact with the end wall of the oil storage tank 4. An oil storage space is formed between the extrusion part 8, the two rolled edge parts 9, and the oil storage tank 4. The extrusion part 8 and the rolled edge part 9 can be made of elastic materials such as rubber. When the valve stem reciprocates, the cylinder body extrudes the extrusion part 8. During the deformation process, the extrusion part 8 squeezes out the lubricating oil filled in the oil storage space from the rolled edge part 9 to achieve a lubrication effect, realize continuous lubrication, and reduce waste.

[0034] Example 3:

[0035] This embodiment provides an oil leakage prevention valve stem, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0036] The diameter of the extrusion section 8 is larger than the diameter of the rod 1.

[0037] As can be seen from this embodiment, the diameter of the extrusion part 8 is larger than the diameter of the rod body 1, so that the cylinder body can extrude the extrusion part 8.

[0038] Example 4:

[0039] This embodiment provides an oil leakage prevention valve stem, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0040] The outer surface of the oil reservoir 6 is fixedly fitted with a wear-resistant plate 10.

[0041] As can be seen from this embodiment, a wear-resistant plate 10 is fixedly sleeved on the outer surface of the oil reservoir 6. The wear-resistant plate 10 can enhance the wear resistance and avoid damage caused by excessive friction during the reciprocating motion of the extrusion part 8. The wear-resistant plate 10 can be made of polytetrafluoroethylene, which has strong wear resistance and extends service life.

[0042] Example 5:

[0043] This embodiment provides an oil leakage prevention valve stem, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0044] The extrusion section 8 and the wear-resistant plate 10 are provided with a connection hole, and an injection oil plug 11 is fixedly connected to the connection hole.

[0045] As can be seen in this embodiment, the extrusion part 8 and the wear-resistant plate 10 are provided with a connection hole, and an injection plug 11 is fixedly connected to the connection hole. The injection plug 11 is a one-way sealing structure to prevent oil backflow. Lubricating oil is injected into the oil storage component 6 through the injection plug 11.

[0046] Example 6:

[0047] This embodiment provides an oil leakage prevention valve stem, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0048] Also includes:

[0049] Lubrication ring groove 12 is distributed on the outer side of rod body 1 and is located close to oil reservoir 4.

[0050] As can be seen from this embodiment, the lubrication ring groove 12 is distributed on the outer side of the rod body 1, and the lubrication ring groove 12 is set close to the oil storage tank 4, and the lubrication ring groove 12 can store lubricating oil.

[0051] Example 7:

[0052] This embodiment provides an oil leakage prevention valve stem, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0053] The extrusion section 8 and the rolled edge section 9 are integrally formed.

[0054] As can be seen from this embodiment, the extrusion part 8 and the rolled edge part 9 are integrally formed, resulting in high structural strength and long service life.

[0055] Example 8:

[0056] This embodiment provides an oil leakage prevention valve stem, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0057] Several oil outlet channels 13 are provided on both sides of the oil storage tank 4.

[0058] As can be seen from this embodiment, several oil outlet grooves 13 are provided on both sides of the oil storage tank 4, and the oil outlet grooves 13 are provided to facilitate the outflow of lubricating oil.

[0059] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A leak-proof valve stem, characterized in that, include: The rod (1) has a connecting part (2) fixedly provided at one end and an installation part (3) fixedly provided at the other end. The connection between the rod (1) and the installation part (3) is an inclined surface (7). Oil storage tank (4), and several oil storage tanks (4) are provided in the middle of the rod (1); Oil storage component (6): The oil storage tank (4) is fitted with an oil storage component (6) for storing lubricating oil. When the oil storage component (6) is squeezed, the lubricating oil inside the oil storage component (6) will flow out from the end of the oil storage component (6) to lubricate the rod body (1).

2. The oil leak-proof valve stem according to claim 1, characterized in that, The oil storage component (6) is composed of an extrusion part (8) and a rolled edge part (9). The cross-section of the extrusion part (8) is arc-shaped, and the rolled edge part (9) is fixedly connected to both sides of the extrusion part (8). The cross-section of the rolled edge part (9) is semi-circular, and part of the rolled edge part (9) is in contact with the end wall of the oil storage tank (4). An oil storage space is formed between the extrusion part (8), the two rolled edge parts (9) and the oil storage tank (4).

3. The oil leak-proof valve stem according to claim 2, characterized in that, The diameter of the extrusion part (8) is larger than the diameter of the rod (1).

4. The oil leak-proof valve stem according to claim 3, characterized in that, The outer surface of the oil storage component (6) is fixedly fitted with a wear-resistant plate (10).

5. The oil leak-proof valve stem according to claim 4, characterized in that, The extrusion part (8) and the wear-resistant plate (10) are provided with a connection hole, and an injection plug (11) is fixedly connected to the connection hole.

6. The oil leak-proof valve stem according to claim 1, characterized in that, Also includes: Lubrication ring groove (12) is distributed on the outside of the rod body (1) and is located close to the oil reservoir (4).

7. The oil leak-proof valve stem according to claim 2, characterized in that, The extrusion part (8) and the rolled edge part (9) are integrally formed.

8. The oil leak-proof valve stem according to claim 1, characterized in that, Several oil outlet channels (13) are provided on both sides of the oil storage tank (4).

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