Large-flow reversing valve with self-locking function

Abstract

The utility model discloses a large-flow reversing valve with a self-locking function, and relates to the technical field of reversing valves, the large-flow reversing valve with the self-locking function is provided with a connector assembly, a valve element assembly and a self-locking operation assembly, and the self-locking function of the reversing valve can be achieved through linkage between the valve element assembly and the self-locking operation assembly. The connector assembly and the valve body are connected with each other and can be used for being connected with an external pipeline, connection is more stable, meanwhile, the sealing ring and the O-shaped ring are arranged at the joint assembly and the valve body, the dual-sealing effect can be achieved, external impurities are prevented from entering the valve body from a gap between the joint assembly and the valve body, the impurities can be prevented from entering the valve element assembly, and the service life of the valve element assembly is prolonged. And the situation that the valve element assembly is damaged or blocked can be avoided, and the valve element assembly is more durable.

Description

Technical Field

[0001] The utility model relates to the technical field of reversing valves, in particular to a reversing valve with a large flow rate and a self-locking function. Background Art

[0002] At present, large-flow reversing valves with self-locking function are often used to control the flow direction of liquids, especially in the coal mining industry. However, most reversing valves with self-locking function have poor structural sealing properties and are not very stable when connected to external pipelines.

[0003] For example, the utility model with patent number CN201822104901.1 discloses a reversing valve with a self-locking mechanism, wherein a self-locking mechanism is arranged on the handle assembly, and the self-locking mechanism comprises a self-locking groove formed on the top of the valve cover, a connecting assembly is arranged on the valve cover, a reset member is arranged between the connecting assembly and the handle assembly, and a corrugated rubber sleeve that can move with the handle assembly connects the handle assembly and the connecting assembly; in the above structure, a self-locking groove is arranged on the valve cover, and the handle assembly is inserted into the self-locking groove. During operation, the handle assembly needs to be pulled out of the self-locking groove along the axial direction of the handle assembly before the handle assembly can be swung, which can effectively avoid misoperation of the handle assembly due to unexpected force and ensure the reliability of the reversing valve. In addition, the connecting assembly can seal the connection between the handle assembly and the valve cover, and a corrugated rubber sleeve is arranged at the connection between the handle assembly and the connecting assembly, with multiple protections to avoid dust accumulation or large foreign matter falling into the handle assembly, which causes the handle assembly to be stuck, and has good sealing performance and high safety performance.

[0004] The reversing valve in this patent has no external joints, and the pipe can only be inserted into the valve body to connect with the valve core assembly. The sealing performance is not very good and the connection is not stable enough. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a reversing valve with a large flow rate and a self-locking function, which solves the problem that the reversing valve has no external connector.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a large-flow reversing valve with self-locking function, including a valve body, a joint assembly is installed on the valve body, a valve core assembly is installed inside the valve body, a self-locking operating assembly is installed outside the valve body, the self-locking operating assembly includes a connecting seat, a rotating block is installed inside the connecting seat through an axis, a rotating rod is fixedly connected to the outside, a handle is fixedly installed on the end of the rotating rod, a first stop is provided on one side of the rotating block, and a second stop is provided on the other side of the rotating block, the first stop and the second stop are installed in the connecting seat through the axis, the rotating rod and the rotating block are connected to each other through a connecting rod, and a guide groove corresponding to the connecting rod is opened on the surface of the connecting seat.

[0007] Preferably, the connector assembly comprises a first connector, and a second connector is disposed on the side of the first connector.

[0008] Furthermore, external joints are arranged outside the first connector and the second connector, and connecting grooves corresponding to the first connector and the second connector are opened on the surface of the valve body.

[0009] Furthermore, a sealing ring is provided at the junction of the first connector, the second connector and the valve body, and an O-ring is provided on the side of the sealing ring.

[0010] Preferably, the valve core assembly includes a first valve core, a second valve core is arranged on the side of the first valve core, and a third valve core is arranged outside the second valve core.

[0011] Furthermore, a fourth valve core is disposed outside the first valve core, springs are disposed outside the first valve core, the fourth valve core, the second valve core and the third valve core, and a sealing sleeve is disposed outside the spring.

[0012] Beneficial Effects

[0013] The utility model provides a large flow reversing valve with a self-locking function. Compared with the prior art, it has the following beneficial effects:

[0014] The large-flow reversing valve with self-locking function can realize the self-locking function of the reversing valve by setting a joint assembly, a valve core assembly and a self-locking operating assembly. The self-locking function of the reversing valve can be achieved through the linkage between the valve core assembly and the self-locking operating assembly. The joint assembly and the valve body are connected to each other and can be used to connect external pipelines. The connection is more stable. At the same time, sealing rings and O-rings are provided at the joint assembly and the valve body, which can play a double sealing role to prevent external impurities from entering the valve body through the gap between the joint assembly and the valve body. Not only can impurities be prevented from entering the valve core assembly, but also the valve core assembly can be prevented from being damaged or stuck, making it more durable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a side view of the utility model;

[0017] Figure 3 It is a cross-sectional view of the utility model;

[0018] Figure 4 It is a structural schematic diagram of the self-locking state of the self-locking operating component in the utility model.

[0019] In the figure: 1. valve body; 2. joint assembly; 201. first connector; 202. second connector; 203. external connector; 3. valve core assembly; 301. first valve core; 302. second valve core; 303. third valve core; 304. fourth valve core; 305. spring; 306. sealing sleeve; 4. self-locking operation assembly; 401. connecting seat; 402. rotating block; 403. first stop block; 404. second stop block; 405. rotating rod; 406. handle; 407. connecting rod; 5. sealing ring; 6. O-ring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-4 The utility model provides a technical solution: a reversing valve with a large flow rate and a self-locking function, comprising a valve body 1, a joint assembly 2 is installed on the valve body 1, a valve core assembly 3 is installed inside the valve body 1, a self-locking operating assembly 4 is installed outside the valve body 1, and the self-locking operating assembly 4 comprises a connecting seat 401, a rotating block 402 is installed inside the connecting seat 401 through an axis, a rotating rod 405 is fixedly connected to the outside, a handle 406 is fixedly installed at the end of the rotating rod 405, a first stopper 403 is arranged on one side of the rotating block 402, and a second stopper 404 is arranged on the other side of the rotating block 402 The first stopper 403 and the second stopper 404 are installed in the connecting seat 401 through the shaft. Through the setting of the first stopper 403 and the second stopper 404, it can be linked with the valve core assembly 3. Rotating the rotating block 402 can change the direction of the first stopper 403 and the second stopper 404 to achieve self-locking or opening. The rotating rod 405 and the rotating block 402 are connected to each other through the connecting rod 407. A guide groove corresponding to the connecting rod 407 is provided on the surface of the connecting seat 401. By setting the guide groove, it can play a limiting role to prevent the connecting rod 407 from falling off.

[0022] The joint assembly 2 includes a first connector 201, a second connector 202 is arranged on the side of the first connector 201, an external connector 203 is arranged outside the first connector 201 and the second connector 202, a connection groove corresponding to the first connector 201 and the second connector 202 is opened on the surface of the valve body 1, and the external connector 203 can be connected to an external pipeline for easy disassembly and installation, a sealing ring 5 is arranged at the junction of the first connector 201, the second connector 202 and the valve body 1, and an O-ring 6 is arranged on the side of the sealing ring 5, by arranging the sealing ring 5 and the O-ring 6 , which can play a double sealing role to prevent impurities from entering the valve body 1 through the gap. The valve core assembly 3 includes a first valve core 301, a second valve core 302 is arranged on the side of the first valve core 301, a third valve core 303 is arranged outside the second valve core 302, and a fourth valve core 304 is arranged outside the first valve core 301. A spring 305 is arranged outside the first valve core 301 and the fourth valve core 304, the second valve core 302 and the third valve core 303, and a sealing sleeve 306 is arranged outside the spring 305. The spring 305 can be used to buffer the force.

[0023] During operation, the valve core assembly 3 is first installed inside the valve body 1. After installation, the joint assembly 2 is fixed on the valve body 1, and the external pipeline is connected to the two external joints 203. When locking is required, the handle 406 can be held, the rotating rod 405 can be rotated, the direction of the rotating block 402 can be changed, and the first stop block 403 or the second stop block 404 can be pushed to rotate. The self-locking function of the reversing valve can be realized through the linkage between the valve core assembly 3 and the self-locking operation assembly 4. The joint assembly 2 and the valve body 1 are connected to each other and can be used to connect the external pipeline. The connection is more stable. At the same time, a sealing ring 5 and an O-ring 6 are provided at the joint assembly 2 and the valve body, which can play a double sealing role to prevent external impurities from entering the valve body 1 through the gap between the joint assembly 2 and the valve body 1. Not only can impurities be prevented from entering the valve core assembly 3, but also the valve core assembly 3 can be prevented from being damaged or stuck, making it more durable.

[0024] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. A large flow rate reversing valve with a self-locking function, comprising a valve body (1), characterized in that: A joint assembly (2) is mounted on the valve body (1), a valve core assembly (3) is mounted inside the valve body (1), a self-locking operating assembly (4) is mounted outside the valve body (1), the self-locking operating assembly (4) comprises a connecting seat (401), a rotating block (402) is mounted inside the connecting seat (401) via a shaft, a rotating rod (405) is fixedly connected to the outside, a handle (406) is fixedly mounted on the end of the rotating rod (405), a first stopper (403) is arranged on one side of the rotating block (402), and a second stopper (404) is arranged on the other side of the rotating block (402), the first stopper (403) and the second stopper (404) are mounted in the connecting seat (401) via a shaft, the rotating rod (405) and the rotating block (402) are connected to each other via a connecting rod (407), and a guide groove corresponding to the connecting rod (407) is provided on the surface of the connecting seat (401).

2. A large flow rate reversing valve with self-locking function according to claim 1, characterized in that: The joint assembly (2) comprises a first connector (201), and a second connector (202) is arranged on the side of the first connector (201).

3. A large flow rate reversing valve with self-locking function according to claim 2, characterized in that: The first connecting head (201) and the second connecting head (202) are provided with external joints (203) on the outside, and the surface of the valve body (1) is provided with connecting grooves corresponding to the first connecting head (201) and the second connecting head (202).

4. A large flow rate reversing valve with self-locking function according to claim 3, characterized in that: A sealing ring (5) is provided at the junction between the first connector (201) and the second connector (202) and the valve body (1), and an O-ring (6) is provided on the side of the sealing ring (5).

5. A large flow rate reversing valve with self-locking function according to claim 1, characterized in that: The valve core assembly (3) comprises a first valve core (301), a second valve core (302) is arranged on the side of the first valve core (301), and a third valve core (303) is arranged outside the second valve core (302).

6. A large flow rate reversing valve with self-locking function according to claim 5, characterized in that: A fourth valve core (304) is arranged outside the first valve core (301), a spring (305) is arranged outside the first valve core (301), the fourth valve core (304), the second valve core (302) and the third valve core (303), and a sealing sleeve (306) is arranged outside the spring (305).

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