High-precision hydraulic valve sleeve

Abstract

The utility model relates to the technical field of hydraulic valve sleeves, in particular to a high-precision hydraulic valve sleeve which comprises a valve sleeve shell, annular grooves are formed in the outer wall of the valve sleeve shell from top to bottom at equal intervals, and outer holes are formed in the positions, located on the outer wall of the valve sleeve shell, of one sides of the annular grooves. The screen is located on one side of the communicating hole, meanwhile, the communicating hole is located on one side of the outer hole, when hydraulic oil enters the outer hole of the valve sleeve shell, the hydraulic oil flows into the communicating hole, impurities in the hydraulic oil are blocked by the screen at the moment, and then the hydraulic oil flowing into the inner cavity of the valve sleeve inner barrel is cleaner; a threaded limiting rod rotates on the outer wall of a mounting block, one end of the threaded limiting rod drives an arc-shaped limiting plate to move towards the inner side, then the arc-shaped limiting plate drives a limiting sliding rod to move towards the inner side, the position of the arc-shaped limiting plate is adjusted, the arc-shaped limiting plate is attached to the outer wall of a valve element, and a proper gap can be adjusted; and the fixing effect on the valve element is better.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic valve valve sleeve technical field, concretely is a kind of high-precision hydraulic valve valve sleeve. BACKGROUND

[0002] Hydraulic valve is a kind of automation element operated by pressure oil, it is controlled by pressure oil of pressure regulating valve, usually combined with electromagnetic pressure regulating valve, it can be used for remote control of water and electricity station oil, gas, water pipeline system's on-off. It is often used in clamping, control, lubrication and other oil circuit, hydraulic valve sleeve plays a vital role in hydraulic system, it is one of main components of valve, its performance and quality directly affect the stability and reliability of entire hydraulic system, if impurities or pollutants are contained in hydraulic oil, these substances can enter between valve sleeve and valve core, aggravate wear and cause leakage, such as prior art represented by a kind of high-precision hydraulic valve sleeve (publication number CN212226155U), the patent technology is through in valve sleeve shell and located in the valve sleeve shell and with its matching valve sleeve inner sleeve, the top of the valve sleeve shell is provided with a plurality of evenly distributed annular grooves one, tapered oil port and annular groove two, the both ends of the valve sleeve inner sleeve are symmetrically provided with a plurality of evenly distributed limit racks, the both ends in the valve sleeve shell are provided with limit grooves matched with the limit racks, the top of the limit groove in the valve sleeve shell is provided with hole, the hole is provided with a plurality of groups of link mechanisms. Advantage: make the installation and disassembly between valve sleeve inner sleeve and valve sleeve shell more simple and convenient, reduce the labor intensity when installing and disassembling, when valve sleeve inner sleeve wears and needs to be replaced, make it only need to replace valve sleeve inner sleeve, save resources;And the tungsten carbide coating on the surface of valve sleeve inner sleeve, make the valve sleeve have high wear resistance, improve precision, and greatly prolong the service life of valve sleeve, thereby effectively solve the prior art problems, but its structure still needs to be improved, as follows:

[0003] In the scheme, there is a cooperation gap problem between valve core and valve sleeve, whether too large or too small, it is easy to cause hydraulic clamping phenomenon, seriously affect the normal operation and stability of system, the device cannot adjust the gap of valve body and valve sleeve, therefore, a kind of high-precision hydraulic valve sleeve is needed to improve the above problems. UTILITY MODEL CONTENTS

[0004] In order to solve the cooperation gap problem between valve core and valve sleeve when installing hydraulic valve sleeve, whether too large or too small, it is easy to cause hydraulic clamping phenomenon, seriously affect the normal operation and stability of system, the device cannot adjust the gap of valve body and valve sleeve, the utility model provides a kind of high-precision hydraulic valve sleeve to solve the above problems.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A high-precision hydraulic valve sleeve, comprising a sleeve shell, a plurality of annular grooves are equidistantly arranged on the outer wall of the sleeve shell from top to bottom, an outer hole is arranged on one side of the annular groove and on the outer wall of the sleeve shell, a fixing member is arranged on the inner wall of the sleeve shell, and a limiting assembly is mounted on the inner wall of the fixing member.

[0007] As a preferred scheme of the utility model, the fixing member comprises a sleeve inner cylinder, the sleeve inner cylinder is plug-in mounted on the inner wall of the sleeve shell, a threaded groove is arranged on one side of the outer wall of the sleeve inner cylinder, the threaded groove is threadedly connected on the inner wall of the sleeve shell, and a communication hole is arranged on the outer wall of the sleeve inner cylinder.

[0008] As a preferred scheme of the utility model, the communication hole is located on one side of the outer hole, an installation ring groove is arranged on the end face of the sleeve inner cylinder, the connection between the installation ring groove and the communication hole is a communication structure, and a screen is plug-in mounted on the inner wall of the installation ring groove.

[0009] As a preferred scheme of the utility model, the limiting assembly comprises a mounting block, a plurality of mounting blocks are inlaidly mounted at the ports of the sleeve shell, and a threaded limiting rod is threadedly connected on the outer wall of the mounting block.

[0010] As a preferred scheme of the utility model, an arc-shaped limiting plate is rotatably connected to the inner cavity of the sleeve inner cylinder and located at one end of the threaded limiting rod, and a limiting slide rod is mounted at one end of the arc-shaped limiting plate.

[0011] As a preferred scheme of the utility model, one end of the limiting slide rod sequentially penetrates the sleeve inner cylinder and the sleeve shell, and the connecting mode of the limiting slide rod with the sleeve inner cylinder and the sleeve shell is sliding connection.

[0012] As a preferred scheme of the utility model, a plurality of outer holes are arranged on the outer wall of the sleeve shell, and a plurality of communication holes are arranged on the outer wall of the sleeve inner cylinder.

[0013] As a preferred scheme of the utility model, the communication hole is located on one side of the arc-shaped limiting plate, the screen is located on one side of the communication hole, the threaded limiting rod and the limiting slide rod are respectively located at the opposite ports of the sleeve shell, and the threaded limiting rod and the limiting slide rod are both multi-section plug-in splicing structures.

[0014] Compared with the prior art, the utility model discloses a limiting assembly is arranged in the high accuracy hydraulic valve valve bush, can realize the adjustment fixed of valve core, rotates the threaded limiting rod, makes the threaded limiting rod rotate on the outer wall of mounting block, and then makes the one end of threaded limiting rod drive arc limiting plate move to the inboard, when arc limiting plate moves to the inboard in the inner chamber of valve bush inner tube, makes arc limiting plate drive limiting slide rod move to the inboard, and then adjusts the position of arc limiting plate, makes arc limiting plate adhere on the outer wall of valve core, can adjust to the suitable clearance, and the fixed effect of valve core is better, thereby solve the cooperation clearance problem between valve core and valve bush, no matter too big or too small, all extremely easy to cause hydraulic clamping phenomenon, seriously influence the normal operation and stability problem of system.

[0015] The utility model discloses a fixing piece is set up in the high accuracy hydraulic valve valve bush, can realize the screening of the hydraulic oil that valve bush passes, because the screen is located at the one side of the communicating hole, and the communicating hole is located at the one side of the outer hole, when the outer hole of valve bush casing enters the hydraulic oil, the hydraulic oil flows into the communicating hole, the impurity in the hydraulic oil is blocked by the screen at this time, and then make the hydraulic oil that flows into the inner chamber of valve bush inner tube be cleaner, thereby solve the problem that the hydraulic oil contains the impurity or pollutant, these substances can enter between valve bush and valve core, aggravate the wear and tear and cause the problem of leakage. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is whole structure schematic diagram of the utility model;

[0017] Figure 2 It is top view structure schematic diagram of the utility model;

[0018] Figure 3 It is valve bush casing analysis structure schematic diagram of the utility model;

[0019] Figure 4 It is A structure schematic diagram of the utility model Figure 3 ;

[0020] Figure 5 It is B structure schematic diagram of the utility model Figure 3 .

[0021] In the drawing: 1, valve bush casing;2, annular groove;3, outer hole;4, fixing piece;401, valve bush inner tube;402, threaded groove;403, communicating hole;404, mounting ring groove;405, screen;5, limiting assembly;501, mounting block;502, threaded limiting rod;503, arc limiting plate;504, limiting slide rod. DETAILED DESCRIPTION

[0022] Clearly, the described embodiments are merely a part of the embodiments of the present application, but not all the embodiments, based on the embodiments in the present application, all the other embodiments obtained by the ordinary skilled in the art without creative labor shall fall within the scope of protection of the present application.

[0023] Embodiment: please refer to Figures 1-5 The utility model discloses a high-precision hydraulic valve bushing, including bushing casing 1, the equal interval is seted up annular groove 2 from top to bottom on the outer wall of bushing casing 1, the one side of annular groove 2 and be located on the outer wall of bushing casing 1 and set up outer hole 3, the inner wall of bushing casing 1 is provided with fixed part 4, and the inner wall of fixed part 4 is installed with limit component 5.

[0024] In this embodiment, specific reference is made to Figure 1 , Figure 2 , Figure 3 and Figure 5 , fixed part 4 includes bushing inner tube 401, bushing inner tube 401 is inserted and installed on the inner wall of bushing casing 1, and threaded groove 402 is set up on the outer wall of one side of bushing inner tube 401, threaded groove 402 is screw connected on the inner wall of bushing casing 1, and communication hole 403 is set up on the outer wall of bushing inner tube 401, communication hole 403 is located at one side of outer hole 3, installation ring groove 404 is set up on the end face of bushing inner tube 401, the connection of installation ring groove 404 and communication hole 403 is communicated structure, and screen 405 is inserted and installed on the inner wall of installation ring groove 404.

[0025] In this embodiment, specific reference is made to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , limit component 5 includes mounting block 501, and mounting block 501 is provided with multiple groups and is embedded in the port of bushing casing 1 respectively, threaded limit rod 502 is screw connected on the outer wall of mounting block 501, arc-shaped limit plate 503 is rotatably connected in the inner cavity of bushing inner tube 401 and at one end of threaded limit rod 502, limit sliding rod 504 is installed at one end of arc-shaped limit plate 503, and one end of limit sliding rod 504 penetrates bushing inner tube 401 and bushing casing 1 in sequence, and the connection mode of limit sliding rod 504 and bushing inner tube 401 and bushing casing 1 is sliding connection.

[0026] Among them, the outer hole 3 is provided with multiple groups and is located on the outer wall of the valve sleeve shell 1, the communication hole 403 is provided with multiple groups and is located on the outer wall of the valve sleeve inner cylinder 401, the communication hole 403 is located on one side of the arc limiting plate 503, the screen 405 is located on one side of the communication hole 403, the threaded limiting rod 502 and the limiting slide rod 504 are respectively located at the opposite ends of the valve sleeve shell 1, and the threaded limiting rod 502 and the limiting slide rod 504 are both under the action of a multi-section plug-in splicing structure, when the limiting assembly 5 needs to adjust the position, only need to increase the number of threaded limiting rods 502 and limiting slide rods 504 for splicing and extension according to the demand, to adapt to different limiting requirements, and after installation, the excess threaded limiting rods 502 and limiting slide rods 504 are disassembled, to prevent the one end of the threaded limiting rod 502 and the limiting slide rod 504 from being higher than the outer wall of the valve sleeve shell 1, which may cause the installation of the valve sleeve shell 1 to be blocked.

[0027] The high-precision hydraulic valve sleeve in the scheme works, the inner wall of the valve sleeve shell 1 is provided with a fixed part 4, the valve sleeve inner cylinder 401 is plug-in installed on the inner wall of the valve sleeve shell 1, a threaded groove 402 is formed on one side of the outer wall of the valve sleeve inner cylinder 401, the threaded groove 402 is threadedly connected to the inner wall of the valve sleeve shell 1, the valve sleeve inner cylinder 401 is inserted into the inner wall of the valve sleeve shell 1, when the valve sleeve inner cylinder 401 moves to the appropriate position, only need to rotate the valve sleeve inner cylinder 401, and then make the valve sleeve inner cylinder 401 further fixed by being threadedly connected to the inner wall of the valve sleeve shell 1 through the threaded groove 402, at the same time, an installation ring groove 404 is formed on the end face of the valve sleeve inner cylinder 401, the connection between the installation ring groove 404 and the communication hole 403 is a communication structure, the screen 405 is plug-in installed on the inner wall of the installation ring groove 404, under the action of the screen 405 located on one side of the communication hole 403, at the same time, the communication hole 403 is located on one side of the outer hole 3, when the outer hole 3 of the valve sleeve shell 1 enters the hydraulic oil, the hydraulic oil flows into the communication hole 403, at this time, the impurities in the hydraulic oil are blocked by the screen 405, and then the hydraulic oil flowing into the inner cavity of the valve sleeve inner cylinder 401 is cleaner, thereby solving the problem that the hydraulic oil contains impurities or pollutants, which may enter between the valve sleeve and the valve core, aggravate the wear and cause leakage.

[0028] Through, the mounting block 501 is provided with multiple groups and is respectively embeddedly installed at the port of the valve sleeve shell 1, the outer wall of the mounting block 501 is threadedly connected with the threaded limiting rod 502, under the action of the threaded limiting rod 502, first, the valve core is inserted into the inner cavity of the limiting assembly 5, then the threaded limiting rod 502 is rotated, the threaded limiting rod 502 is rotated on the outer wall of the mounting block 501, and then one end of the threaded limiting rod 502 drives the arc-shaped limiting plate 503 to move inward, the limiting slide rod 504 is installed at one end of the arc-shaped limiting plate 503, one end of the limiting slide rod 504 penetrates the valve sleeve inner cylinder 401 and the valve sleeve shell 1 in turn, and the connecting mode of the limiting slide rod 504 and the valve sleeve inner cylinder 401 and the valve sleeve shell 1 is sliding connection, under the action that the arc-shaped limiting plate 503 moves to the middle in the inner cavity of the valve sleeve inner cylinder 401, the arc-shaped limiting plate 503 drives the limiting slide rod 504 to move inward, since the arc-shaped limiting plate 503 is provided with multiple groups, only the threaded limiting rod 502 is rotated to drive the arc-shaped limiting plate 503 to move, and then the position of the arc-shaped limiting plate 503 is adjusted, the arc-shaped limiting plate 503 is attached to the outer wall of the valve core, and the gap can be adjusted to be appropriate, the fixing effect of the valve core is better, thereby solving the cooperation gap problem between the valve core and the valve sleeve, no matter whether the gap is too large or too small, hydraulic clamping phenomenon is easily caused, and the normal operation and stability of the system are seriously affected.

[0029] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A high-precision hydraulic valve bushing, comprising a bushing housing (1), characterized in that: The outer wall of the valve sleeve shell (1) is provided with annular grooves (2) equidistantly from top to bottom, one side of the annular grooves (2) and on the outer wall of the valve sleeve shell (1) is provided with an outer hole (3), the inner wall of the valve sleeve shell (1) is provided with a fixing part (4), and the inner wall of the fixing part (4) is provided with a limiting assembly (5).

2. A high precision hydraulic valve bushing according to claim 1, characterized in that: The fixing part (4) comprises a valve sleeve inner cylinder (401), the valve sleeve inner cylinder (401) is plug-in mounted on the inner wall of the valve sleeve shell (1), a threaded groove (402) is formed in the outer wall of one side of the valve sleeve inner cylinder (401), the threaded groove (402) is threadedly connected to the inner wall of the valve sleeve shell (1), and a communication hole (403) is formed in the outer wall of the valve sleeve inner cylinder (401).

3. A high precision hydraulic valve bushing according to claim 2, characterized in that: The communication hole (403) is located on one side of the outer hole (3), an installation ring groove (404) is formed in the end face of the valve sleeve inner cylinder (401), the connection between the installation ring groove (404) and the communication hole (403) is a communication structure, and a screen (405) is plug-in mounted on the inner wall of the installation ring groove (404).

4. A high precision hydraulic valve bushing according to claim 3, characterized in that: The limiting assembly (5) comprises a mounting block (501), the mounting block (501) is provided with a plurality of groups and is respectively inlaidly mounted at the ports of the valve sleeve shell (1), and a threaded limiting rod (502) is threadedly connected to the outer wall of the mounting block (501).

5. A high precision hydraulic valve bushing according to claim 4, characterized in that: An arc-shaped limiting plate (503) is rotationally connected to the inner cavity of the valve sleeve inner cylinder (401) and one end of the threaded limiting rod (502), one end of the arc-shaped limiting plate (503) is provided with a limiting slide rod (504).

6. A high precision hydraulic valve bushing according to claim 5, characterized in that: One end of the limiting slide rod (504) penetrates the valve sleeve inner cylinder (401) and the valve sleeve shell (1) in sequence, and the connecting mode of the limiting slide rod (504) with the valve sleeve inner cylinder (401) and the valve sleeve shell (1) is sliding connection.

7. A high precision hydraulic valve bushing according to claim 6, characterized in that: The outer hole (3) is provided with a plurality of groups and is respectively located on the outer wall of the valve sleeve shell (1), and the communication hole (403) is provided with a plurality of groups and is respectively located on the outer wall of the valve sleeve inner cylinder (401).

8. A high precision hydraulic valve bushing according to claim 7, characterized in that: The communication hole (403) is located on one side of the arc-shaped limiting plate (503), the screen (405) is located on one side of the communication hole (403), the threaded limiting rod (502) and the limiting slide rod (504) are respectively located at the opposite ports of the valve sleeve shell (1), and the threaded limiting rod (502) and the limiting slide rod (504) are both multi-section plug-in splicing structures.

Images