Air release valve

Abstract

The utility model discloses an air release valve which comprises a valve body, the side wall of the valve body is provided with a deflation port communicated with the valve body, a valve rod which is assembled with the valve body in a sealing and rotating mode is arranged in the valve body, the valve rod is provided with a pressing arm which is located in the valve body and extends to the position where the valve body is communicated with the deflation port, and the pressing arm is provided with a valve plate matched with the deflation port. One end of the valve rod extends out of the valve body and is connected with an opening and closing driving mechanism which is arranged on the valve body and is used for driving the valve rod to rotate so as to open and close the air outlet of the valve plate; the opening and closing driving mechanism comprises an oil cylinder hinged to the valve body, a telescopic rod of the oil cylinder faces the extending end of the valve rod and is hinged to a rocker arm, and the end, away from the oil cylinder, of the rocker arm is fixedly connected with the extending end of the valve rod. The valve is simple in structure, stable in performance and long in service life, the valve rod can be rapidly and effectively driven to rotate through the oil cylinder and the rocker arm so as to drive the valve plate to open and close the air outlet, the response speed is high, the structure is reliable, and manpower is not needed.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field, concretely relates to an air release valve. BACKGROUND

[0002] In fluid systems, such as water supply, drainage, air conditioning and refrigeration systems, the pressure inside the system often needs to be accurately controlled. The traditional air release valve usually has the problems of slow response speed, easy damage, etc., which leads to the decrease of system efficiency and the increase of maintenance cost. Therefore, developing an air release valve with fast response speed and reliable structure to improve the stability and reliability of the system is the problem that the present technical personnel need to solve at present. SUMMARY

[0003] The technical problem to be solved by the utility model is to provide an air release valve to solve the problems in the background art.

[0004] To solve the above technical problems, the utility model adopts the following technical scheme.

[0005] The air release valve comprises a valve body, wherein a gas outlet is arranged on the side wall of the valve body and communicates with the valve body, a valve rod is arranged in the valve body and is sealingly and rotatably assembled with the valve body, a pressure arm is arranged on the valve rod and extends into the valve body and communicates with the gas outlet, and a valve plate is arranged on the pressure arm and is matched with the gas outlet; one end of the valve rod extends out of the valve body and is connected with an opening and closing driving mechanism arranged on the valve body and used for driving the valve rod to rotate to open and close the valve plate and the gas outlet; the opening and closing driving mechanism comprises an oil cylinder hinged to the valve body, a telescopic rod of the oil cylinder is arranged towards the extending end of the valve rod and is hinged with a rocker arm, and one end of the rocker arm away from the oil cylinder is fixedly connected with the extending end of the valve rod.

[0006] Preferably, an oil cylinder support is arranged on the outer side wall of the valve body and is opposite to the valve rod, and the bottom of the oil cylinder away from the telescopic rod is hinged to the oil cylinder support.

[0007] Preferably, a sealing ring is arranged on the edge of the valve plate and is used for sealing between the valve plate and the gas outlet after the valve plate closes the gas outlet.

[0008] Preferably, an inlet and an outlet are arranged at the two ends of the valve body and communicate with the valve body.

[0009] Preferably, reinforcing ribs are arranged on the outer walls of the gas outlet, the inlet and the outlet in the circumferential direction and are connected with the valve body.

[0010] Preferably, a manhole is arranged on the side wall of the valve body, a manhole cover is arranged on the manhole and is openably connected with the valve body and is used for covering the manhole, and a manhole pad is arranged on the inner side wall edge of the manhole cover and is used for sealing between the manhole cover and the valve body.

[0011] Preferably, the outer end of the vent port away from the valve body is provided with a flange for connecting an external pipeline.

[0012] The technological advancements achieved by this utility model are as follows, due to the adoption of the above technical solutions.

[0013] This utility model has a simple structure, stable performance and long service life. Through the set oil cylinder and rocker arm, it can quickly and effectively drive the valve stem to rotate, thereby driving the valve plate to open and close the vent port. It not only has a fast response speed and reliable structure, but also requires no manual labor. Attached Figure Description

[0014] Figure 1 This is a first-view structural diagram of the present invention;

[0015] Figure 2 This is a schematic diagram of the second-view structure of the present invention;

[0016] Figure 3 This is a schematic diagram of the third-view structure of this utility model;

[0017] Figure 4 This is a cross-sectional view of the present invention.

[0018] The components are: 1. Valve body, 11. Inlet, 12. Outlet, 13. Vent, 14. Reinforcing rib, 2. Valve stem, 3. Pressure arm, 4. Valve plate, 5. Hydraulic cylinder, 6. Rocker arm, 7. Hydraulic cylinder bracket, 8. Manhole cover, 9. Sealing ring, 10. Flange. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0020] An air release valve, combined with Figures 1 to 3 As shown, the device includes a valve body 1, with an inlet 11 and an outlet 12 at both ends. The inlet 11 and outlet 12 are positioned opposite each other and communicate with the valve body 1. An air vent 13 is provided on the side wall of the valve body 1 and communicates with the valve body 1. A valve stem 2 is disposed within the valve body 1 and is rotatably and sealingly assembled with the valve body 1. Figure 4 As shown, a pressure arm 3 is provided on the valve stem 2. The pressure arm 3 is located in the valve body 1 and extends to the connection between the valve body 1 and the vent port 13. A valve plate 4 is provided on the pressure arm 3, and the valve plate 4 is adapted to the vent port 13. One end of the valve stem 2 extends out of the valve body 1 and is connected to an opening and closing drive mechanism. The opening and closing drive mechanism is provided on the valve body 1 and is used to drive the valve stem 2 to rotate, thereby realizing the opening and closing of the vent port 13 by the valve plate 4.

[0021] The outer side wall of the valve body 1 is provided with a cylinder support 7, and the cylinder support 7 is arranged opposite to the valve rod 2.

[0022] The edge of the valve plate 4 is provided with a sealing ring 9, and the sealing ring 9 is used to realize the sealing between the air outlet 13 and the valve plate 4 after the air outlet 13 is closed by the valve plate 4, so that the sealing property of the valve body 1 is ensured.

[0023] The side wall of the valve body 1 is provided with a manhole, and the manhole is provided with a manhole cover 8; the manhole cover 8 is openably connected with the valve body 1, and the manhole cover 8 is used to cover the manhole.

[0024] The outer end of the air outlet 13 away from the valve body 1 is provided with a flange 10, and the flange 10 can be externally connected with a pipeline. The outer wall of the air outlet 13, the feeding port 11 and the discharging port 12 is circumferentially provided with a reinforcing rib 14, and the reinforcing rib 14 is connected between the air outlet 13, the feeding port 11 and the discharging port 12 and the valve body 1, so that the connecting strength of the air outlet 13, the feeding port 11 and the discharging port 12 and the valve body 1 is improved.

[0025] In use, the valve rod 2 is driven to rotate by the cylinder 5, the valve rod 2 drives the valve plate 4 to rotate, and the opening and closing of the air outlet 13 is realized.

Claims

1. Air release valve comprising a valve body (1), characterized in that: The side wall of the valve body (1) is provided with a gas exhaust port (13) communicated with the valve body (1), the valve body (1) is provided with a valve rod (2) sealingly and rotatably assembled in the valve body (1), the valve rod (2) is provided with a pressing arm (3) located in the valve body (1) and extending to the position where the valve body (1) is communicated with the gas exhaust port (13), and the pressing arm (3) is provided with a valve plate (4) matched with the gas exhaust port (13); one end of the valve rod (2) extending out of the valve body (1) is connected with an opening and closing driving mechanism arranged on the valve body (1) and used for driving the valve rod (2) to rotate so as to open and close the valve plate (4) to open and close the gas exhaust port (13); the opening and closing driving mechanism comprises an oil cylinder (5) hinged to the valve body (1), the telescopic rod of the oil cylinder (5) is arranged towards the extending end of the valve rod (2) and is hinged with a rocker arm (6), and one end of the rocker arm (6) away from the oil cylinder (5) is fixedly connected with the extending end of the valve rod (2).

2. The air release valve of claim 1, wherein: The outer side wall of the valve body (1) is provided with an oil cylinder support (7) arranged opposite to the valve rod (2), and the bottom of the telescopic rod of the oil cylinder (5) is hinged to the oil cylinder support (7).

3. The air release valve of claim 1, wherein: The edge of the valve plate (4) is provided with a sealing ring (9) used for sealing between the valve plate (4) and the gas exhaust port (13) after the valve plate (4) closes the gas exhaust port (13).

4. The air release valve of claim 1, wherein: The two ends of the valve body (1) are oppositely provided with a feeding port (11) and a discharging port (12) communicated with the valve body (1).

5. The air release valve of claim 4, wherein: The outer walls of the gas exhaust port (13), the feeding port (11) and the discharging port (12) are circumferentially provided with reinforcing ribs (14) connected with the valve body (1).

6. The air release valve of claim 1, wherein: The side wall of the valve body (1) is provided with a manhole, the manhole is provided with a manhole cover (8) openably connected with the valve body (1) and used for covering the manhole, and the inner side wall edge of the manhole cover (8) is provided with a manhole gasket used for sealing between the manhole cover (8) and the valve body (1).

7. The air release valve of claim 1, wherein: The outer end of the gas exhaust port (13) away from the valve body (1) is provided with a flange (10) used for connecting with a pipeline.

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