Guide sleeve assembly convenient to install

Abstract

The utility model discloses a guide sleeve assembly convenient to install, and relates to the technical field of guide sleeves, an outer sealing rubber ring making contact with the inner wall of a valve body is installed in an outer sealing groove, two liquid storage cavities are formed in the outer side of a guide sleeve body through sealing rings, a flow guide hole is formed in an end plate, and the flow guide hole is communicated with the outer sealing rubber ring. Backflow holes are formed in the side surfaces of the two ends of the guide sleeve main body, the two ends of the guide sleeve main body are further sleeved with filter screens, the filter screens cover the backflow holes, inner sealing grooves are formed in the inner surfaces of the two ends of the guide sleeve main body, and inner sealing rubber rings are installed in the inner sealing grooves; the backflow holes formed in the side surfaces of the two ends of the guide sleeve body enable the sealing cavity to communicate with the liquid storage cavity, and the filter screens arranged outside the backflow holes have the effect of filtering impurities in liquid, so that the situation that the impurities enter a gap between the guide sleeve body and the guide rod to increase abrasion is avoided, and the situation that the guide rod deflects during guiding due to abrasion is avoided; therefore, the guiding stability of the guide sleeve assembly to the guide rod is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of guide sleeves, in particular to a guide sleeve assembly with convenient installation. Background Art

[0002] A hydraulic valve is an automated component operated by pressure oil. It is controlled by the pressure oil of a distribution valve and is usually used in combination with an electromagnetic distribution valve. It can be used to remotely control the on-off of the oil, gas, and water pipeline systems in a hydropower station. The guide sleeve assembly is used to guide the guide rod of the hydraulic valve and provide support for the stable movement of the guide rod. The guide sleeve assembly is usually installed in the valve body by a circlip to achieve the purpose of convenient installation.

[0003] When the existing guide sleeve assembly with convenient installation is in use, due to the gap between the guide rod and the guide sleeve, once metal debris enters the gap, it is easy to cause scratches on the guide sleeve and the guide rod, resulting in skewed guiding after the guide rod wears, reducing the working reliability. Summary of the Utility Model

[0004] The utility model aims at the deficiencies of the existing technology and provides the following technical solution: a guide sleeve assembly with convenient installation, including a guide sleeve body. End plates for supporting and installed in the valve body are integrally formed at both ends of the guide sleeve body. A convex ring for limiting the end plate is provided on the inner surface of one end of the valve body. A limiting groove is opened at the other end of the valve body. A circlip for limiting the end plate at the other end of the guide sleeve body is installed in the limiting groove. A sealing ring is integrally formed in the middle of the guide sleeve body. An outer sealing groove is opened at the edge of the sealing ring. An outer sealing rubber ring in contact with the inner wall of the valve body is installed in the outer sealing groove. Two liquid storage cavities are formed between the outer side of the guide sleeve body and the inner wall of the valve body through the sealing ring. Diversion holes are opened on the end plates. Return holes are opened on the side surfaces at both ends of the guide sleeve body. Filter nets are sleeved at both ends of the guide sleeve body and cover the outside of the return holes. Inner sealing grooves are opened on the inner surfaces at both ends of the guide sleeve body. Inner sealing rubber rings are installed in the inner sealing grooves.

[0005] As an improvement of the above technical solution, a diversion groove is opened in the middle of the guide sleeve body.

[0006] As an improvement of the above technical solution, the diversion groove includes an annular groove and a vertical groove that are perpendicular to each other, and both ends of the vertical groove are communicated with the return holes.

[0007] As an improvement of the above technical solution, limiting card slots communicated with the return holes are opened on the outer surfaces at both ends of the guide sleeve body. The inner ring bosses of the filter nets are installed in the limiting card slots.

[0008] As an improvement of the above technical solution, the diversion groove is communicated with the liquid storage cavity through the filter net.

[0009] As an improvement of the above technical solution, both the end plate and the sealing ring are of circular ring structure.

[0010] The beneficial effects of the present utility model are as follows: through the end plates integrally formed at both ends of the guide sleeve body, when the guide sleeve body is installed inside the valve body, the end plate at one end of the guide sleeve body is limited by the convex ring provided on the inner surface of the valve body, and the end plate at the other end of the guide sleeve body is limited by the snap ring installed in the limiting groove provided on the inner surface of the valve body, achieving the purpose of rapid installation of the guide sleeve assembly; the outer ring of the sealing ring integrally formed in the middle of the guide sleeve body is provided with an outer sealing groove, and an outer sealing rubber ring is installed in the outer sealing groove, so that two liquid storage cavities are formed between the outer wall of the guide sleeve body and the inner wall of the valve body through the outer sealing rubber ring, and inner sealing rubber rings are installed in the inner sealing grooves provided on the inner surfaces at both ends of the guide sleeve body, so that when the hydraulic valve guide rod is installed inside the guide sleeve body, a sealing cavity is formed between the guide sleeve body and the guide rod through the inner sealing rubber ring, and the return holes provided on the side surfaces at both ends of the guide sleeve body enable the sealing cavity to communicate with the liquid storage cavity, and the filter screen provided outside the return holes plays a role in filtering impurities in the liquid, thereby avoiding impurities from entering the gap between the guide sleeve body and the guide rod to increase wear and preventing the guide rod from being skewed during guiding due to wear, thus improving the guiding stability of the guide sleeve assembly for the guide rod and enhancing the working reliability. Description of the Drawings

[0011] Figure 1 is a three-dimensional structure diagram of the present utility model;

[0012] Figure 2 is a sectional view I structure diagram of the present utility model;

[0013] Figure 3 is a sectional view II structure diagram of the present utility model.

[0014] Reference numerals: 1, guide sleeve body; 2, end plate; 3, sealing ring; 4, outer sealing groove; 5, outer sealing rubber ring; 6, diversion hole; 7, return hole; 8, limiting card slot; 9, filter screen; 10, inner sealing groove; 11, inner sealing rubber ring; 12, diversion groove; 13, valve body; 14, limiting groove; 15, snap ring. Detailed Embodiments

[0015] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0016] Please refer to Figures 1-3, the present utility model provides a technical solution: a conveniently installed guide sleeve assembly, including a guide sleeve main body 1. At both ends of the guide sleeve main body 1, end plates 2 integrally formed and serving as a support inside the valve body 13 are provided. On the inner surface of one end of the valve body 13, a convex ring for limiting the end plate 2 is provided. On the inner surface of the other end of the valve body 13, a limiting groove 14 is opened. Inside the limiting groove 14, a snap ring 15 for limiting the end plate 2 at the other end of the guide sleeve main body 1 is installed. In the middle of the guide sleeve main body 1, a sealing ring 3 is integrally formed. On the edge of the sealing ring 3, an outer sealing groove 4 is opened. Inside the outer sealing groove 4, an outer sealing rubber ring 5 in contact with the inner wall of the valve body 13 is installed. On the outside of the guide sleeve main body 1, two liquid storage cavities are formed with the inner wall of the valve body 13 through the sealing ring 3. On the end plate 2, a diversion hole 6 is opened. On the side surfaces at both ends of the guide sleeve main body 1, return holes 7 are opened. At both ends of the guide sleeve main body 1, a filter net 9 is also sleeved, and the filter net 9 covers the outside of the return holes 7. On the inner surfaces at both ends of the guide sleeve main body 1, inner sealing grooves 10 are opened. Inside the inner sealing grooves 10, inner sealing rubber rings 11 are installed.

[0017] In this implementation scheme, through the end plates 2 integrally formed at both ends of the guide sleeve main body 1, when the guide sleeve main body 1 is installed inside the valve body 13, the end plate 2 at one end of the guide sleeve main body 1 is limited by the convex ring provided on the inner surface of the valve body 13, while the end plate 2 at the other end of the guide sleeve main body 1 is limited by the snap ring 15 installed in the limiting groove 14 opened on the inner surface of the valve body 13, achieving the purpose of quickly installing the guide sleeve assembly; and on the outer ring of the sealing ring 3 integrally formed in the middle of the guide sleeve main body 1, an outer sealing groove 4 is opened, and an outer sealing rubber ring 5 is installed inside the outer sealing groove 4, so that two liquid storage cavities are formed between the outside of the guide sleeve main body 1 and the inner wall of the valve body 13 through the outer sealing rubber ring 5. Inside the inner sealing grooves 10 opened on the inner surfaces at both ends of the guide sleeve main body 1, inner sealing rubber rings 11 are installed. When the hydraulic valve guide rod is installed inside the guide sleeve main body 1, a sealing cavity is formed between the guide sleeve main body 1 and the guide rod through the inner sealing rubber ring 11. The return holes 7 opened on the side surfaces at both ends of the guide sleeve main body 1 enable the sealing cavity to communicate with the liquid storage cavity. The filter net 9 provided outside the return holes 7 plays a role in filtering impurities in the liquid, thereby preventing impurities from entering the gap between the guide sleeve main body 1 and the guide rod to increase wear, and preventing the guide rod from skewing during guiding due to wear, thereby improving the guiding stability of the guide sleeve assembly for the guide rod.

[0018] Specifically, a diversion groove 12 is opened in the middle of the guide sleeve main body 1. In this embodiment, through the diversion groove 12 opened in the middle of the guide sleeve main body 1, the liquid storage amount in the sealing cavity between the guide sleeve main body 1 and the guide rod is increased by the diversion groove 12, which is beneficial for lubrication when the guide rod moves inside the guide sleeve main body 1.

[0019] Specifically, the flow guiding groove 12 includes an annular groove and a vertical groove that are perpendicular to each other, and both ends of the vertical groove communicate with the return holes 7. In this embodiment, through the flow guiding groove 12 composed of a buffer and a vertical groove, and both ends of the vertical groove communicate with the return holes 7, so that the flow guiding groove 12 communicates with the return holes 7, facilitating the mutual flow of the liquid in the flow guiding groove 12 and the liquid in the liquid storage cavity.

[0020] Specifically, limiting card slots 8 communicating with the return holes 7 are formed on the outer surfaces of both ends of the guide sleeve body 1, and the inner ring boss of the filter net 9 is installed in the limiting card slots 8. In this embodiment, it is convenient for the limiting card slots 8 to limit the filter net 9, preventing the filter net 9 from shifting after installation and increasing the stability of the installation of the filter net 9.

[0021] Specifically, the flow guiding groove 12 communicates with the liquid storage cavity through the filter net 9. In this embodiment, it is convenient for the liquid inside and outside the guide sleeve body 1 to flow mutually.

[0022] Specifically, both the end plate 2 and the sealing ring 3 are of circular ring structure. In this embodiment, the stability of the structure of the guide sleeve body 1 is increased.

[0023] During installation, the guide sleeve body 1 is placed into the valve body 13. At this time, the end plate 2 at the lower end of the guide sleeve body 1 is supported by the convex ring, and the snap ring 15 is installed in the limiting groove 14 to limit the end plate 2 at the upper end of the guide sleeve body 1. During use, since the outer sealing groove 4 is provided with an outer sealing rubber ring 5, two liquid storage cavities are formed above and below the guide sleeve body 1 through the outer sealing rubber ring 5, and the inner sealing rubber ring 11 installed in the inner sealing groove 10 formed on the inner surfaces of both ends of the guide sleeve body 1 enables a sealing cavity to be formed between the guide sleeve body 1 and the guide rod when the guide rod is installed inside the guide sleeve body 1. When the guide rod moves upward, the space above the valve body 13 decreases due to the upward movement of the guide rod, and the air below the valve body 13 increases due to the upward movement of the guide rod. At this time, the liquid above the valve body 13 flows into the upper liquid storage cavity through the flow guiding holes 6 at the upper end of the guide sleeve body 1, and the liquid in the upper liquid storage cavity flows into the sealing cavity through the return holes 7 after being filtered by the filter net 9. The liquid in the sealing cavity plays a role in lubricating the guide rod in the guide sleeve body 1 after being guided through the flow guiding groove 12, and the liquid in the sealing cavity flows into the lower liquid storage cavity through the return holes 7, and the liquid in the lower liquid storage cavity flows into the valve body 13 through the flow guiding holes 6 at the lower end of the guide sleeve body 1.

[0024] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it.

Claims

1. A conveniently installed guide bushing assembly, comprising a guide bushing body (1), characterized in that: Both ends of the guide sleeve body (1) are integrally formed with end plates (2) installed inside the valve body (13) for support. On the inner surface of one end of the valve body (13), there is a convex ring for limiting the end plate (2). On the other end of the valve body (13), a limiting groove (14) is provided. Inside the limiting groove (14), a circlip (15) for limiting the end plate (2) at the other end of the guide sleeve body (1) is installed. In the middle of the guide sleeve body (1), a sealing ring (3) is integrally formed. On the edge of the sealing ring (3), an outer sealing groove (4) is provided. Inside the outer sealing groove (4), an outer sealing rubber ring (5) in contact with the inner wall of the valve body (13) is installed. On the outer side of the guide sleeve body (1), two liquid storage cavities are formed with the inner wall of the valve body (13) through the sealing ring (3). On the end plate (2), a diversion hole (6) is provided. On the side surfaces at both ends of the guide sleeve body (1), return holes (7) are provided. On both ends of the guide sleeve body (1), filter nets (9) are also sleeved, and the filter nets (9) cover the outside of the return holes (7). On the inner surfaces at both ends of the guide sleeve body (1), inner sealing grooves (10) are provided. Inside the inner sealing grooves (10), inner sealing rubber rings (11) are installed.

2. The bushing assembly for convenient installation according to claim 1, wherein: In the middle of the guide sleeve body (1), a diversion groove (12) is provided.

3. The bushing assembly for convenient installation according to claim 2, characterized in that: The diversion groove (12) includes a ring groove and a vertical groove that are perpendicular to each other, and both ends of the vertical groove are communicated with the return holes (7).

4. The bushing assembly for convenient installation according to claim 2, characterized in that: On the outer surfaces at both ends of the guide sleeve body (1), limiting card slots (8) communicated with the return holes (7) are provided. The inner ring bosses of the filter nets (9) are installed in the limiting card slots (8).

5. The bushing assembly for convenient installation according to claim 3, characterized in that: The diversion groove (12) is communicated with the liquid storage cavity through the filter net (9).

6. A bushing assembly for convenient installation according to claim 1, characterized in that: Both the end plate (2) and the sealing ring (3) are of circular ring structure.

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