Throttling pneumatic valve

Abstract

The utility model discloses a throttling pneumatic valve, which belongs to the technical field of valves and comprises a pneumatic ball valve and a pneumatic actuator, the pneumatic actuator controls the pneumatic ball valve to be opened and closed, two ends of the pneumatic ball valve are respectively connected with a feeding pipe and a discharging pipe, an air inlet end of the pneumatic actuator is connected with a dry air source, and an air outlet end of the pneumatic actuator is connected with an air outlet pipe. And the air outlet end of the throttle valve is connected with the outside. According to the utility model, the throttle valve is arranged at the air outlet end of the pneumatic actuator, so that the opening and closing speed of the pneumatic ball valve can be slowed down, and the water hammer phenomenon in the feeding pipe and the discharging pipe is eliminated; an exhaust pipe of the throttle valve is led to the outside, so that the influence of noise on the indoor working environment is reduced; the pneumatic actuator is connected with a dry air source, so that the service life of the pneumatic actuator is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a throttling pneumatic valve. Background Art

[0002] The process in which the fluid in a pressure pipeline causes the conversion of momentum due to the change in velocity, resulting in a sudden change in pipeline pressure, is called the water hammer phenomenon. Especially for pneumatic valves, due to their rapid opening and closing, it is extremely easy to cause the water hammer phenomenon in the pressure pipeline, leading to violent vibration of the pipeline, generating huge noise, and even flushing open the joints, causing accidents.

[0003] According to the investigation and analysis, the frequent opening and closing or rapid opening and closing of the valve is the direct cause of the water hammer phenomenon. Delaying the opening and closing time of the valve can fundamentally solve this kind of pipeline water hammer problem. Summary of the Utility Model

[0004] In view of the above problems, the utility model provides a throttling pneumatic valve to solve one or more technical problems existing in the prior art, and at least provide a beneficial choice or create conditions.

[0005] In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0006] A throttling pneumatic valve includes a pneumatic ball valve and a pneumatic actuator. The pneumatic actuator controls the opening and closing of the pneumatic ball valve. The two ends of the pneumatic ball valve are respectively connected with a feed pipe and a discharge pipe. The air inlet end of the pneumatic actuator is connected with a dry air source, and its air outlet end is connected with a throttle valve. The air outlet end of the throttle valve is connected to the outside.

[0007] Preferably, the pneumatic actuator is a two-position five-way solenoid valve, and there are two throttle valves, which are respectively connected to the air outlet ports of the two valve cavities of the throttle valve.

[0008] Preferably, several throttle valves are connected in parallel to a main pipe, and the main pipe extends to the outside of the room. The main pipe located outside the room is connected with a muffler.

[0009] Advantages of the Utility Model

[0010] By arranging a throttle valve at the air outlet end of the pneumatic actuator, the utility model can slow down the opening and closing speed of the pneumatic ball valve, thereby eliminating the water hammer phenomenon in the feed pipe and the discharge pipe; the exhaust pipe of the throttle valve is led to the outside of the room to reduce the influence of noise on the indoor working environment; the pneumatic actuator is connected with a dry air source to extend the service life of the pneumatic actuator. Brief Description of the Drawings

[0011] Figure 1 is the flowchart of the embodiment;

[0012] Figure 2 is the perspective view of the embodiment;

[0013] Figure 3 is the front view of the embodiment;

[0014] Description of reference numerals: 1 - pneumatic ball valve; 2 - pneumatic actuator; 3 - feed pipe; 4 - discharge pipe; 5 - throttle valve; 6 - main pipe; 7 - silencer, 8 - inlet pipe, 9 - outlet pipe. Specific embodiments

[0015] The technical solution of the present utility model will be described below in conjunction with the drawings and embodiments.

[0016] Embodiment: A throttling pneumatic valve includes a pneumatic ball valve 1 and a pneumatic actuator 2. The pneumatic actuator 2 controls the opening and closing of the pneumatic ball valve 1. The two ends of the pneumatic ball valve 1 are respectively connected with a feed pipe 3 and a discharge pipe 4. The pneumatic actuator 2 is a two-position five-way solenoid valve. When the left working position of the pneumatic actuator 2 is connected, the pneumatic ball valve 1 opens. When the right working position of the pneumatic actuator 2 is connected, the pneumatic ball valve 1 closes. The air inlet end of the pneumatic actuator 2 is connected to a dry air source. The dry air source is connected to the pneumatic actuator 2 through an inlet pipe 8 and then controls the opening of the pneumatic ball valve 1. Its air outlet end is connected with a throttle valve 5. There are two throttle valves 5, which are respectively connected to the air outlet of the two valve cavities of the throttle valve 5 to control the air return speed of the pneumatic actuator 2, thereby controlling the opening and closing movement speed of the pneumatic ball valve 1 and eliminating the water hammer phenomenon. The air outlet end of the throttle valve 5 is connected to the outside.

[0017] Specifically, the two throttle valves 5 are connected in parallel to a main pipe 6. The main pipe 6 extends to the outside of the room. A silencer 7 is connected to the main pipe 6 located outside the room, which greatly reduces the noise of the working environment.

[0018] Working principle and beneficial effects: When the left working position of the pneumatic actuator 2 is connected, the compressed gas of the dry air source enters the pneumatic ball valve 1 through the pneumatic actuator 2, thereby opening the channel between the feed pipe 3 and the discharge pipe 4. The gas comes out of the pneumatic actuator 2 and passes through the throttle valve 5 to control its flow rate, so that the opening speed of the pneumatic ball valve slows down, thereby eliminating the water hammer phenomenon in the feed pipe 3 and the discharge pipe 4 and extending the service life of the feed pipe 3 and the discharge pipe 4.

[0019] In the description of the present utility model, it should be understood that the terms "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, as well as a specific orientation structure and operation. Therefore, it should not be construed as a limitation to the present utility model. In addition, "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0020] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "connection", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0021] The above has described in detail an embodiment of the present utility model, with a focus on an interference fit socket and spigot connection structure with a rigid plug and a flexible socket, but the above content is only a preferred embodiment of the present utility model and cannot be considered as limiting the scope of implementation of the present utility model. All equivalent changes and improvements made according to the scope of the application of the present utility model should still fall within the scope covered by the patent of the present utility model.

Claims

1. A throttling pneumatic valve, comprising a pneumatic ball valve (1) and a pneumatic actuator (2), wherein the pneumatic actuator (2) controls the opening and closing of the pneumatic ball valve (1), and the two ends of the pneumatic ball valve (1) are respectively connected to a feed pipe (3) and a discharge pipe (4), characterized in that: The air inlet end of the pneumatic actuator (2) is connected to a dry air source, and the air outlet end thereof is connected to a throttle valve (5), and the air outlet end of the throttle valve (5) is connected to the outside world.

2. A throttling pneumatic valve according to claim 1, characterized in that: The pneumatic actuator (2) is a two-position five-way solenoid valve, and there are two throttle valves (5), which are respectively connected to the air outlets of two valve chambers of the throttle valve (5).

3. A throttling pneumatic valve according to claim 1, characterized in that: A plurality of the throttle valves (5) are connected in parallel to a main pipe (6), and the main pipe (6) extends outdoors. The main pipe (6) located outdoors is connected to a muffler (7).

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