CN206386547U - Balanced type gas control angle pedestal valve - Google Patents

Abstract

The utility model discloses a balanced air-controlled angle seat valve, which comprises a valve body, a valve core and a valve stem, and also includes a valve air control device for realizing valve switch control, a pressure maintaining device for realizing secondary pressurization, and a valve air control device for realizing secondary pressurization. The main seal structure of the valve is cut off and opened. The valve air control device includes a cylinder, a spring and a piston located in the cylinder. One end of the spring is fixed on the top of the cylinder, and the other end is fixed on the piston. The device is connected, the pressure maintaining device includes a pressure chamber, the pressure chamber is connected with the valve body, the valve core and the valve stem, and the main sealing structure of the valve includes a valve core gasket at the bottom of the valve core, and a valve core gasket at the bottom of the valve core gasket. spool gasket. The utility model has a simple and compact structure. By using the pressure of the medium itself, the secondary pressurization is performed to realize good sealing of the high-pressure medium, save energy consumption, reduce costs, improve life, and realize a low energy consumption and high-efficiency control mechanism.

Description

Balanced Air Control Angle Seat Valve

technical field

The utility model belongs to the technical field of air control valves, in particular to a balanced air control angle seat valve.

Background technique

In the developed modern industry, as the vision of Industry 4.0 rises to the national strategic layout, the degree of automation in various industries needs to be improved urgently. The air control valve realizes the perfect control of automation, effective sealing mechanism and rapid response control effect. It is used in chemical industry, filling industry, printing and dyeing textile industry, rubber industry, pharmaceutical industry, water treatment industry, environmental protection industry, gas industry, high temperature Sterilization, foaming machinery and other related fields are widely used, but due to the complex sealing structure and large control mechanism of this type of valve, the valve is easy to wear and tear, and its life is low. It is suitable for ordinary traditional industries, but it cannot be fully satisfied with the fast-response modern industries.

Contents of the invention

Aiming at the deficiencies of the existing technology, the utility model provides a balanced air-controlled angle seat valve with compact structure, good sealing of high-pressure medium through secondary pressurization, and fulfillment of modern industry's requirements for safety and reliability. Severe working conditions, reduce costs, increase life, and achieve low energy consumption, high-efficiency control mechanism.

In order to solve the above technical problems, the technical solution adopted by the utility model is: a balanced air-controlled angle seat valve, including a valve body, a valve core and a valve stem, and also includes a valve air control device for realizing valve switch control, realizing secondary charging The pressure maintaining device and the main sealing structure of the valve realize the cutting and opening of the medium. The valve air control device includes a cylinder, a spring and a piston in the cylinder. One end of the spring is fixed on the top of the cylinder, and the other end is fixed on the piston. The valve The air control device is connected with the pressure maintaining device through the connection structure, the pressure maintaining device includes a pressure chamber, the pressure chamber is connected with the valve body, the valve core and the valve stem, and the main sealing structure of the valve includes a valve core seal at the bottom of the valve core Pad, the spool gasket at the bottom of the spool gasket.

Further, the side wall of the cylinder is provided with a first air intake hole and a second air intake hole connected to an external air control device.

Further, a viewing window is provided in the center of the top of the cylinder.

Further, the bottom of the cylinder is provided with an end cover.

Further, the upper part of the connection structure is connected to the end cover, and the lower part is connected to the pressure chamber.

Further, the upper part of the valve stem is fixedly connected with the piston.

Compared with the prior art, the utility model has the advantages of:

(1) By using the pressure of the medium itself, the medium is introduced into the pressure chamber to form a secondary pressurization, and the small cylinder, the small air source pressure and the spring preload are used to achieve good sealing of the high-pressure medium ;

(2) The structure is compact and beautiful, and the appearance is simple and exquisite, which meets the needs of modern industry for safety and reliability, and can meet harsh working conditions. Under the same working conditions, it saves energy consumption, reduces costs, improves life, and achieves low energy consumption. consumption, high performance control mechanism.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a schematic diagram of the closed state of the utility model;

Fig. 3 is a schematic diagram of the open state of the utility model.

In the figure: 1. Window; 2. Cylinder; 3. Spring; 4. Piston; 5. End cover; 6. Connection structure; 7. Valve body; 8. Valve core; 9. Valve core gasket; 10. Valve core Gasket; 11. Valve stem; 12. Pressure chamber; 13. First air inlet; 14. Second air inlet.

detailed description

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail.

As shown in Figure 1, the balanced air-controlled angle seat valve includes a valve body 7, a valve core 8 and a valve stem 11, and also includes a valve air control device for realizing valve switch control, a pressure maintaining device for realizing secondary pressurization, and realizing The main sealing structure of the valve for cutting off and opening the medium. The valve air control device includes a cylinder 2, a spring 3 and a piston 4 located in the cylinder 2. One end of the spring 3 is fixed on the top of the cylinder 2, and the other end is fixed on the piston 4. The valve air control The device is connected to the pressure maintaining device through the connection structure 6. The pressure maintaining device includes a pressure chamber 12. The pressure chamber 12 is connected with the valve body 7, the valve core 8 and the valve stem 11 to form a sealed cavity structure. The upper part of the valve stem 11 is fixed to the piston 4. Connection, the lower part of the valve stem 11 is connected to the valve core 8, the bottom of the valve stem 11 is provided with a hole, the main sealing structure of the valve includes a valve core gasket 9 located at the bottom of the valve core 8, a valve core gasket located at the bottom of the valve core gasket 9 10.

The side wall of the cylinder 2 is provided with a first air intake hole 13 and a second air intake hole 14 connected with an external air control device, a window 1 is provided in the center of the top of the cylinder 2, an end cover 5 is provided at the bottom of the cylinder 2, and the upper part of the connection structure 6 It is connected with the end cover 5, and the lower part is connected with the pressure chamber 12. The compressed air enters the cylinder 2 alternately from the first air inlet 13 and the second air inlet 14 to supply air, and pushes the piston 4 to reciprocate, so as to realize the opening and closing of the valve. .

As shown in Figure 2, the closing of the valve is achieved in the following way: after the compressed air enters the cylinder 2 from the second air inlet 14, the pressure of the compressed air and the spring force of the spring 3 force the piston 4 to move downward and stop at the valve core 8, the valve core gasket 9, at this time, the medium can enter the pressure chamber 12 through the hole at the valve stem 11, and the pressure chamber 12 forms a sealed cavity structure with the connecting structure 6, valve body 7, valve core 8, and valve stem 11. The secondary pressurization of the pressure-maintenance of the medium forces the medium to stay at the left end of the valve core 8 to realize the valve closing.

As shown in Figure 3, the opening of the valve is realized in the following way: after the compressed air enters the cylinder 2 from the first air inlet 13, the piston 4 is forced to move upward, at this time, the valve stem 11 moves upward, driving the valve core 8, The spool gasket 9 and the spool spacer 10 move upward together, and now the medium flows from the left end of the spool 8 to the right end of the spool 8, and the medium passes through the valve body 7 channels to realize the valve opening.

To sum up, the utility model has a compact and beautiful structure, simple and exquisite appearance, and uses the pressure of the medium itself to introduce the medium into the pressure chamber for secondary pressurization. Under the condition of the function, it can realize the good sealing of the high-pressure medium; it can realize the demand of modern industry for safety and reliability, and can meet the harsh working conditions. Under the same working conditions, it can save energy consumption, reduce costs and increase the service life , to achieve low energy consumption, high-efficiency control mechanism.

Of course, the above description is not a limitation of the present utility model, and the present utility model is not limited to the above-mentioned examples. Those of ordinary skill in the art can make changes, modifications, additions or replacements within the essential scope of the present utility model. All should belong to the protection scope of the present utility model.

Claims (6)

1. Balanced air-controlled angle seat valve, including valve body, valve core and valve stem, is characterized in that it also includes a valve air control device for valve switch control, a pressure-holding device for secondary pressurization, and a pressure-retaining device for the medium. The main sealing structure of the valve is cut off and opened. The valve air control device includes a cylinder, a spring and a piston in the cylinder. One end of the spring is fixed on the top of the cylinder, and the other end is fixed on the piston. The pressure maintaining device includes a pressure chamber, the pressure chamber is connected with the valve body, the valve core and the valve stem, and the main sealing structure of the valve includes a valve core gasket at the bottom of the valve core, a valve core gasket at the bottom of the valve core Spool gasket. 2. The balanced air-controlled angle seat valve according to claim 1, characterized in that: the side wall of the cylinder is provided with a first air inlet and a second air inlet connected to an external air control device. 3. The balanced air control angle seat valve according to claim 2, characterized in that: a window is set in the center of the top of the cylinder. 4. The balanced air control angle seat valve according to claim 3, characterized in that: the bottom of the cylinder is provided with an end cover. 5. The balanced air-controlled angle seat valve according to any one of claims 1-4, characterized in that: the upper part of the connection structure is connected to the end cover, and the lower part is connected to the pressure chamber. 6. The balanced air-operated angle seat valve according to claim 1, characterized in that: the upper part of the valve stem is fixedly connected with the piston.