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Novel reversing valve

A reversing valve, a new type of technology, used in multi-port valves, safety valves, balance valves, etc., can solve the problems of product connection, complex debugging, large overall shape and high cost, and achieve low cost and flexible pressure setting. , the effect of low manufacturing cost

Active Publication Date: 2014-03-26
WUZHONG INSTR
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Obviously, the adoption of this solution has the disadvantages of complex product connection and debugging, large overall size and high cost.

Method used

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Embodiment Construction

[0018] Such as figure 2 , 3 , 4, and 5, the present invention is a new reversing valve, including a base 1, on which a reversing chamber 2, a piston chamber 3 and a pressure regulating chamber 4 are installed sequentially from bottom to top, wherein in the reversing The chamber 2 is respectively opened with a first inlet (namely A port), a second inlet (namely C port) and an outlet (namely B port), and a double spool part 5 is installed in the reversing chamber 2, the double spool The lower end of the part 5 is connected with the base 1 through the return spring 6 and its upper end is connected with the air control piston 8 installed in the air pressure chamber 7 in the piston chamber 3; wherein a diaphragm tray part 9 is installed in the pressure regulating chamber 4, in which An exhaust hole 20 is arranged in the middle of the diaphragm tray part 9, and the lower end of the exhaust hole 20 communicates with the air pressure chamber 7 in the aforementioned piston chamber 3 ...

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Abstract

The invention relates to a novel reversing valve. The novel reversing valve is characterized in that the novel reversing valve comprises a base (1), a reversing cavity (2), a piston cavity (3) and a pressure regulating cavity (4) are sequentially installed on the base (1) from bottom to top, the reversing cavity (2) is provided with a first inlet, a second inlet and an outlet, a double-valve-element component (5) is installed in the reversing cavity (2), the lower end of the double-valve-element component (5) is connected with the base (1) through a reset spring (6), the upper end of the double-valve-element component (5) is connected with an air-controlled piston (8) installed in an air pressure cavity (7) in the piston cavity (3), a diaphragm tray component (9) is installed in the pressure regulating cavity (4), and an exhaust hole (20) is formed in the middle of the diaphragm tray component (9). The pilot-operated type operating principle is adopted in the novel reversing valve, and the novel reversing valve can detect air source pressure and achieve automatic reversing and can be applied to the field of pneumatic interlocking or safety control in the instrument and meter industry.

Description

technical field [0001] The invention relates to a novel reversing valve. Background technique [0002] The traditional control scheme is as follows: when it is necessary to detect the pressure of the air source and realize the reversing of the air path in the pneumatic control circuit, the combination of "pneumatic pressure switch" and "pneumatic control reversing valve" is used to realize it. Such as figure 1 As shown, the traditional control scheme is briefly described with the control case of the pneumatic control valve in the process control industry. The pressure reducing valve depressurizes the air source and inputs it to the positioner, and the positioner controls the pneumatic actuator according to the input 4-20mA current signal; when the pressure of the air source of the pressure reducing valve is lower than the set value of the fault point of the air source The timing control system requires the pneumatic actuator to discharge the compressed air to the atmospher...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K17/10
CPCF15B13/023F16K11/065F16K17/10
Inventor 马玉山高强余少华
Owner WUZHONG INSTR
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