Improved logic valve

Abstract

The utility model discloses an improved logic valve which comprises a valve body, connecting cavities are formed in the two ends of the interior of the valve body respectively, quick-plug connectors are arranged in the connecting cavities, a connecting channel is formed in the middle of the interior of the valve body, and the connecting channel is communicated with the two connecting cavities. The surface of the inner wall of the connecting cavity is fixedly connected with a limiting block matched with the quick connector, and a valve element assembly is arranged in the connecting channel. In combination with the structural design, the internal design is simplified, the quick connector is arranged to facilitate connection in the use process, meanwhile, the sealing ring is arranged between the quick connector and the valve body, a gap between the quick connector and the valve body can be reduced, the connection sealing performance of the quick connector and the valve body is improved, and therefore the service life of a product is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of logic valve technology, specifically an improved logic valve. Background Technology

[0002] Logic valves are cartridge-mounted valves that control the flow direction, pressure, and flow rate of the main hydraulic circuit by opening, closing, and the amount of opening. Logic valves are widely used in high-pressure, high-flow, or ultra-high-flow hydraulic systems, and are applicable to a wide range of machinery, including large machine tools, bending machines, die-casting machines, plastic injection molding machines, copper rolling mills, and various heavy industrial machinery, vehicles, and ships.

[0003] However, most existing logic valves have an inadequate and unreasonable structure, poor sealing performance, and use threaded connections for fixing, which makes disassembly and assembly inconvenient, shortens their service life, and makes them difficult to use. Summary of the Invention

[0004] The purpose of this utility model is to provide an improved logic valve to solve the problems mentioned in the background art, such as the fact that most existing logic valves have an insufficiently compact and reasonable structure, poor sealing performance, and use threaded connections for fixing, which are inconvenient to disassemble and assemble, have a short service life, and are not convenient to use.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an improved logic valve, comprising a valve body, wherein connecting cavities are respectively opened at both ends of the valve body, quick-connect fittings are provided in the connecting cavities, a connecting channel is opened in the middle of the valve body, and the connecting channel communicates with the two connecting cavities, a limiting block that cooperates with the quick-connect fittings is fixedly connected to the inner wall surface of the connecting cavity, and a valve core assembly is provided in the connecting channel.

[0006] Preferably, the quick-connector includes a fixed cylinder, a connecting cylinder, and a sealing ring. The fixed cylinder is engaged with the inner wall of the connecting cavity. The connecting cylinder is movably connected inside the fixed cylinder. A sealing ring is fitted onto the front end of the fixed cylinder, and the sealing ring is in contact with the inner wall of the connecting cavity.

[0007] Preferably, a connecting block is fixedly connected to the surface of the fixed cylinder behind the sealing ring, and the connecting block and the limiting block are interlocked.

[0008] Preferably, the connecting cylinder includes a plug cylinder and elastic connecting strips. Multiple elastic connecting strips are fixedly connected to one end face of the plug cylinder in a ring shape, and the elastic connecting strips are movably connected to the inner wall of the fixed cylinder.

[0009] Preferably, the sealing ring includes a collar and a sealing ring. The collar is sleeved on the surface of the fixed cylinder, and a connecting groove is formed on the surface of the collar, in which the sealing ring is engaged. Beneficial effects

[0010] Compared with existing technologies, the beneficial effects of this utility model are as follows:

[0011] The structural design of this utility model is simplified. By setting a quick-connect connector, it is easy to connect during use. At the same time, a sealing ring is set between the quick-connect connector and the valve body to reduce the gap between them, increase the sealing performance of the connection, and thus improve the service life of the product. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0014] Figure 3 This is a schematic diagram of the quick-connect connector structure of this utility model.

[0015] The correspondence between the labels and component names in the attached figures is as follows:

[0016] 1. Valve body; 2. Quick-connect fitting; 3. Connecting cavity; 4. Connecting channel; 5. Valve core assembly; 21. Fixed cylinder; 22. Connecting cylinder; 23. Sealing ring; 31. Limiting block; 221. Connecting cylinder; 222. Elastic connecting strip;

[0017] 231. Collar; 232. Connecting groove; 233. Sealing ring. Detailed Implementation

[0018] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "front," "rear," "inner," "outer," "vertical," and "horizontal," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] like Figure 1-3This is a schematic diagram of the structure of an improved logic valve according to a preferred embodiment of the present invention. In this embodiment, the improved logic valve includes a valve body 1, with connecting cavities 3 at both ends of the valve body 1. A quick-connect connector 2 is provided in the connecting cavity 3. A connecting channel 4 is provided in the middle of the valve body 1, and the connecting channel 4 communicates with the two connecting cavities 3. A limiting block 31 that cooperates with the quick-connect connector 2 is fixedly connected to the inner wall surface of the connecting cavity 3. A valve core assembly 5 is provided in the connecting channel 4. Combined with the structural design of the present invention, its internal design is simplified, and the quick-connect connector facilitates connection during use.

[0021] In this embodiment, the quick-connect connector 2 includes a fixed cylinder 21, a connecting cylinder 22, and a sealing ring 23. The fixed cylinder 21 is interlocked with the inner wall of the connecting cavity 3. A connecting block 211 is fixedly connected to the surface of the fixed cylinder 21 behind the sealing ring 23, and the connecting block 211 is interlocked with the limiting block 31 to fix and limit the fixed cylinder during use. The connecting cylinder 22 is movably connected inside the fixed cylinder 21, and the connecting cylinder 22 is used to connect with the connected part. The sealing ring 23 is sleeved on the surface of the fixed cylinder 21 at the front end, and the sealing ring 23 is in contact with the inner wall of the connecting cavity 3. At the same time, the sealing ring 23 is provided between the quick-connect connector 2 and the valve body to reduce the gap between them and increase the sealing performance of the connection.

[0022] In this embodiment, the connecting cylinder 22 includes a receiving cylinder 221 and elastic connecting strips 222. Multiple elastic connecting strips 222 are fixedly connected to one end face of the receiving cylinder 221 in a ring shape, and the elastic connecting strips 222 are movably connected to the inner wall of the fixed cylinder 21 to achieve mutual connection with the connected parts.

[0023] In this embodiment, the sealing ring 23 includes a collar 231 and a sealing ring 233. The collar 231 is sleeved on the surface of the fixed cylinder 21. A connecting groove 232 is provided on the surface of the collar 231, and the sealing ring 233 is snapped into the connecting groove 232. The structural design achieves the effect of increasing the sealing performance.

[0024] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. An improved logic valve, comprising a valve body (1), characterized in that: The valve body (1) has connecting cavities (3) at both ends. A quick-connect connector (2) is provided in the connecting cavity (3). A connecting channel (4) is provided in the middle of the valve body (1). The connecting channel (4) communicates with the two connecting cavities (3). A limiting block (31) that cooperates with the quick-connect connector (2) is fixedly connected to the inner wall surface of the connecting cavity (3). A valve core assembly (5) is provided in the connecting channel (4). The quick-connect connector (2) includes a fixed cylinder (21), a connecting cylinder (22) and a sealing ring (23). The fixed cylinder (21) is engaged with the inner wall of the connecting cavity (3). The connecting cylinder (22) is movably connected inside the fixed cylinder (21). A sealing ring (23) is sleeved on the front end of the surface of the fixed cylinder (21). The sealing ring (23) is in contact with the inner wall of the connecting cavity (3).

2. The improved logic valve according to claim 1, characterized in that: The surface of the fixed cylinder (21) is fixedly connected to a connecting block (211) behind the sealing ring (23), and the connecting block (211) and the limiting block (31) are engaged with each other.

3. The improved logic valve according to claim 1, characterized in that: The connecting cylinder (22) includes a connector cylinder (221) and elastic connecting strips (222). One end face of the connector cylinder (221) is fixedly connected with a plurality of elastic connecting strips (222) in an annular shape, and the elastic connecting strips (222) are movably connected to the inner wall of the fixed cylinder (21).

4. The improved logic valve according to claim 2, characterized in that: The sealing ring (23) includes a collar (231) and a sealing ring (233). The collar (231) is sleeved on the surface of the fixed cylinder (21). A connecting groove (232) is provided on the surface of the collar (231), and the sealing ring (233) is engaged in the connecting groove (232).

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