Three-linkage switching valve

Abstract

The three-linkage switching valve is characterized in that the output end of a driving motor is connected with a first valve element arranged in a first valve body through a first rotating rod, piezoelectric sensors are symmetrically installed on the two sides of the first valve body, one end of the first valve body is connected with a second valve body, and the other end of the first valve body is connected with a second rotating rod; the first valve element is connected with a second valve element arranged in the second valve body through a second rotating rod, one end of the second valve body is connected with a third valve body, the second valve element is connected with a third valve element arranged in the third valve body through a third rotating rod, and the other end of the third valve body is connected with a connector. According to the three-linkage switching valve, in order to solve the problems that an existing switching valve often drives a set of valve elements to be opened and closed through a set of motors, and linkage does not exist between the valve elements, the output end of a driving motor is connected with a first valve element arranged in a first valve body through a first rotating rod; and one end of the first valve body is connected with the second valve body.

Description

Technical Field

[0001] The utility model relates to the technical field of switching valves, in particular to a three-link switching valve. Background Art

[0002] The switching valve (forced valve) is a pneumatic switch valve installed at the hot end of the switching heat exchanger (or cold storage device). The valve plate is opened and closed using the connecting rod structure principle. The switch of the switching valve is controlled by the signal compressed air from the solenoid valve. According to the different roles in the process, there are air and dirty nitrogen switching valves, pure nitrogen suppression valves, dirty nitrogen three-way valves, etc. In terms of structural type, there are two types: vertical and horizontal. The vertical switching valve can be divided into two types: air-open type and air-closed type. The air-open type means that when the signal compressed air is cut off, the valve disc can automatically open by its own weight; otherwise, it is an air-closed type. The choice of air-open and air-closed is determined by the safety of the device. The nitrogen switching valve uses the air-open type, and the air switching valve uses the air-closed type. The existing switching valves are often opened and closed by a group of motors driving a group of valve cores, and there is no linkage between the valve cores. Therefore, a three-link switching valve is proposed to solve the above problems. Utility Model Content

[0003] The utility model aims to provide a three-link switching valve to solve the problem that the existing switching valves mentioned in the above background technology are often opened and closed by a group of motors driving a group of valve cores, and there is no linkage between the valve cores.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a three-link switching valve, including a driving motor, wherein the output end of the driving motor is connected to a first valve core arranged inside a first valve body through a first rotating rod, piezoelectric sensors are symmetrically installed on both sides of the first valve body, and one end of the first valve body is connected to the second valve body, the first valve core is connected to a second valve core arranged inside the second valve body through a second rotating rod, and one end of the second valve body is connected to a third valve body, the second valve core is connected to a third valve core arranged inside the third valve body through a third rotating rod, and the other end of the third valve body is connected to a joint.

[0005] Preferably, a joint for use with a driving motor is provided at one end of the first valve body, and a sealing gasket is installed inside the joint.

[0006] The above technical solution makes it easy to connect with the output end of the driving motor.

[0007] Preferably, the first valve body and the second valve body as well as the second valve body and the third valve body are connected by bolts and nuts.

[0008] The above technical solution facilitates the installation of the first valve body and the second valve body, as well as the installation of the second valve body and the third valve body.

[0009] Preferably, sealing gaskets for use with the first valve body, the second valve body and the third valve body are respectively arranged inside the first valve body, the second valve body and the third valve body.

[0010] Through the above technical solution: the sealing performance of the first valve body, the second valve body and the third valve body is improved.

[0011] Preferably, the output end of the driving motor is equipped with an anti-rotation device to prevent the output end of the driving motor from rotating.

[0012] Through the above technical solution: prevent the output end of the drive motor from rotating

[0013] Preferably, the third valve body is connected to the second valve body via a connecting body.

[0014] Through the above technical solution: it is easy to transport through the connector.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows: the three-linkage switching valve, the device solves the problem that the existing switching valves are often opened and closed by a group of valve cores driven by a group of motors, and there is no linkage between the valve cores. By connecting the output end of the driving motor to the first valve core arranged inside the first valve body through the first rotating rod, and one end of the first valve body is connected to the second valve body, the first valve core is connected to the second valve core arranged inside the second valve body through the second rotating rod, and one end of the second valve body is connected to the third valve body, the second valve core is connected to the third valve core arranged inside the third valve body through the third rotating rod, and the other end of the third valve body is connected to the joint, so the first valve core, the second valve core and the third valve core can be driven to move by the driving motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall front view cross-sectional structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the overall front view structure of the utility model;

[0018] Figure 3 It is a frontal perspective schematic diagram of the utility model as a whole;

[0019] Figure 4 It is a rear perspective schematic diagram of the entire utility model.

[0020] In the figure: 1. driving motor; 2. first rotating rod; 3. first valve body; 301. first valve core; 302. piezoelectric sensor; 303. connector; 4. second valve body; 401. second valve core; 5. second rotating rod; 501. third valve body; 502. third valve core; 6. third rotating rod; 7. connector; 8. connector. DETAILED DESCRIPTION

[0021] 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.

[0022] See also Figure 1-4 The utility model provides a technical solution: a three-link switching valve, wherein the output end of a driving motor 1 is connected to a first valve core 301 disposed inside a first valve body 3 through a first rotating rod 2, and one end of the first valve body 3 is connected to a second valve body 4, the first valve core 301 is connected to a second valve core 401 disposed inside the second valve body 4 through a second rotating rod 5, and one end of the second valve body 4 is connected to a third valve body 501, the second valve core 401 is connected to a third valve core 502 disposed inside the third valve body 501 through a third rotating rod 6, and the other end of the third valve body 501 is connected to a connector 7.

[0023] In a further embodiment, a connector 303 for use with the drive motor 1 is disposed at one end of the first valve body 3 , and a sealing gasket is installed inside the connector 303 .

[0024] Specifically, piezoelectric sensors 302 are symmetrically installed on both sides of the first valve body 3 .

[0025] In a further embodiment, the first valve body 3 and the second valve body 4 as well as the second valve body 4 and the third valve body 501 are connected by bolts and nuts.

[0026] In a further embodiment, sealing gaskets for use with the first valve body 3 , the second valve body 4 , and the third valve body 501 are respectively disposed inside the first valve body 3 , the second valve body 4 , and the third valve body 501 .

[0027] In a further embodiment, an anti-rotation device is installed at the output end of the drive motor 1 to prevent the output end of the drive motor 1 from rotating.

[0028] Specifically, the third valve body 501 is connected to the second valve body 4 via the connecting body 8 .

[0029] When in use, the driving motor 1 is turned on, and the output end of the driving motor 1 drives the first valve core 301 to move through the first rotating rod 2. Since the first valve core 301 is connected to the second valve core 401 arranged inside the second valve body 4 through the second rotating rod 5, it can drive the second valve core 401 to move. Since the second valve core 401 is connected to the third valve core 502 arranged inside the third valve body 501 through the third rotating rod 6, it can drive the third valve body 501 to move.

[0030] The directions or positional relationships indicated by terms such as "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the protection content of the present invention.

[0031] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A three-link switching valve, comprising a drive motor (1), characterized in that: The output end of the driving motor (1) is connected to a first valve core (301) disposed inside a first valve body (3) via a first rotating rod (2); piezoelectric sensors (302) are symmetrically mounted on both sides of the first valve body (3); one end of the first valve body (3) is connected to a second valve core (401) disposed inside the second valve body (4) via a second rotating rod (5); one end of the second valve body (4) is connected to a third valve body (501); the second valve core (401) is connected to a third valve core (502) disposed inside the third valve body (501) via a third rotating rod (6); and the other end of the third valve body (501) is connected to a connector (7).

2. A three-link switching valve according to claim 1, characterized in that: A connector (303) for use with the drive motor (1) is provided at one end of the first valve body (3), and a sealing gasket is installed inside the connector (303).

3. A three-link switching valve according to claim 1, characterized in that: The first valve body (3) and the second valve body (4), as well as the second valve body (4) and the third valve body (501) are all connected via bolts and nuts.

4. A three-link switching valve according to claim 1, characterized in that: The first valve body (3), the second valve body (4) and the third valve body (501) are respectively provided with sealing gaskets for use with the first valve body (3), the second valve body (4) and the third valve body (501).

5. The three-link switching valve according to claim 1, characterized in that: The output end of the drive motor (1) is provided with an anti-self-rotation device to prevent the output end of the drive motor from self-rotating.

6. A three-link switching valve according to claim 1, characterized in that: The third valve body (501) is connected to the second valve body (4) via a connecting body (8).

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