CN2646499Y

CN2646499Y - Gas valve

Info

Publication number: CN2646499Y
Application number: CN 03274211
Authority: CN
Inventors: 何应广
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-09-02
Filing date: 2003-09-02
Publication date: 2004-10-06
Anticipated expiration: 2013-09-02

Abstract

The utility model relates to a fuel gas valve comprising a valve body, a valve plug, a fixed ceramic piece and an active ceramic piece. The fixed ceramic piece is fixed onto the valve body; the active ceramic piece is fixed onto the valve plug and can rotate along with the valve plug; the active ceramic piece is pressed on the fixed ceramic piece; the head face of the valve plug directly over the active ceramic piece forms inward an air charge concave chamber; air inlets and outlets are respectively arranged on the active ceramic piece and the fixed ceramic piece; the air inlet and outlet on the fixed ceramic piece are always communicated with the air incoming passage and the air outgoing passage; the air inlet and outlet on the active ceramic piece can form an up and down through communication with the air inlet and outlet on the fixed ceramic piece or can thoroughly stagger from the inlet and outlet on the fixed ceramic piece along with the rotation of the valve plug. An air incoming hole is also arranged on the active ceramic piece; and the air incoming hole can be communicated with the air incoming inlet on the fixed ceramic piece along with the rotation of the valve plug. The utility model comes in simple and reasonable structure, whose valve sealing performance is greatly improved, can be extensively applied with prolonged life expectancy.

Description

Gas valve

Technical field

The utility model relates to a kind of valve that is used to control usefulness such as biogas, liquid gas and rock gas, specifically relates to a kind of gas valve of being made up of valve body, spool, Dingtao ceramics and moving ceramic plate.

Background technique

Existing gas valve is tapering sealing, and serious wear between spool and the valve body, sealability are not fine, cooperates stuckly easily, and lack working life, the processed complex of valve body and spool.

Summary of the invention

Therefore, the purpose of this utility model is to provide that a kind of sealability significantly improves, valve body and spool process simple gas valve.

The purpose of this utility model is to realize like this.

A kind of gas valve, comprise valve body, spool, Dingtao ceramics and moving ceramic plate, described spool is located in the valve body rotationally, moving ceramic plate and Dingtao ceramics are located between spool and the valve body, moving ceramic plate rides over above the ceramics of Dingtao, Dingtao ceramics and valve body are fixed, moving ceramic plate and spool are fixing also can be with valve core rotation, spool end over against moving ceramic plate top is inflated cavity to internal shaping one, respectively be provided with suction port and air outlet on moving ceramic plate and the Dingtao ceramics, suction port on the ceramics of Dingtao and air outlet all the time with valve body on gas-entered passageway and outlet passageway communicate, be provided with seal washer between Dingtao ceramics and the valve body surface of contact, can or stagger with suction port on the ceramics of Dingtao and air outlet up/down perforation fully with the rotation of spool in suction port and air outlet on the moving ceramic plate, also be provided with inlet hole on the moving ceramic plate, and this inlet hole can communicate with the suction port on the ceramics of Dingtao with the spool rotation, guarantees that inflating cavity is filled with pressurized gas all the time, also is provided with seal ring between moving ceramic plate and the spool surface of contact.

Brief description principle of the present utility model once: when the suction port on moving ceramic plate and the Dingtao ceramics and air outlet respectively with valve body on gas-entered passageway and outlet passageway when connecting, the inflating cavity of moving ceramic plate top is filled gas, when moving ceramic plate is rotated when closing gas circuit, stagger in suction port on the moving ceramic plate and suction port and the air outlet on air outlet and the Dingtao ceramics, but the inlet hole on the at this moment moving ceramic plate can communicate with the suction port on the ceramics of Dingtao, make the inflating cavity of moving ceramic plate top still continue inflation, utilize the air pressure principle, gas is sealed in the air outlet that makes ceramic plate compress the Dingtao ceramics, and spool also is subjected to the extruding of high-pressure gas, makes cooperating of spool and other member also be squeezed closely knitly.

Above-mentioned purpose also can be done further perfect by following technical proposals.

Gas-entered passageway and outlet passageway on the described valve body are located along the same line, the valve body bottom surface plate washer that upwards is shaped between gas-entered passageway and outlet passageway, and this plate washer extends below the ceramics of Dingtao, and gas-entered passageway and outlet passageway are separated in valve body fully.

Seal washer shape between described Dingtao ceramics and the valve body surface of contact is the figure of eight.Described valve body upper end-hole has the breach of one section 90 degree arc length, the outer wall of described spool is provided with a lug, lug hangs on the breach of valve body upper end-hole and rotates in this breach with the rotation of spool, makes suction port, air outlet and inlet hole and suction port on the ceramics of Dingtao and air outlet contraposition on the moving ceramic plate.Described moving ceramic plate and Dingtao ceramics radially respectively stretch out two ears along it and are used for fixing with spool and valve body.

The utility model structural design advantages of simple, the processing of valve body is very convenient simple, spool significantly reduces with material, cost reduces, the processing of spool is also very convenient simple, and the sealability of valve is greatly enhanced, and the material of valve can be selected the material that adapts for use according to combustion gas kind difference, using scope is extensive, and increase working life.

Description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is Fig. 1 decomposing state schematic representation.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

A kind of gas valve, comprise valve body 1, spool 2, Dingtao ceramics 3, moving ceramic plate 4, rotation hand wheel 5, spool 2 and valve body 1, rotation hand wheel 5 assembling all-in-one-pieces are pressed female 6, described spool 2 is located in the valve body 1 rotationally, valve body 1 upper end-hole has the breach 10 of one section 90 degree arc length, the outer wall of spool 2 is provided with a lug 20, and lug 20 hangs on the breach 10 of valve body 1 upper end-hole and rotates in this breach 10 with the rotation of spool 2.Between spool 2 and valve body 1, be provided with moving ceramic plate 4 and Dingtao ceramics 3, moving ceramic plate 4 rides over above the Dingtao ceramics 3, Dingtao ceramics 3 is fixing with valve body 1 by its radially-protruding two ears 30, moving ceramic plate 4 is fixed with spool 2 by its radially-protruding two ears 40 and can be rotated with spool 2, spool 2 end faces over against moving ceramic plate 4 tops are inflated cavity 21 to internal shaping one, respectively are provided with

suction port

41,31 and

air outlet

42,32 on moving ceramic plate 4 and the Dingtao ceramics 3.Suction port 31 on the Dingtao ceramics 3 and air outlet 32 all the time with valve body 1 on gas-entered passageway 11 and outlet passageway 12 communicate, gas-entered passageway 11 and outlet passageway 12 on the described valve body 1 are located along the same line, the valve body 1 bottom surface plate washer 13 that upwards is shaped between gas-entered passageway 11 and outlet passageway 12, this plate washer 13 extends below the Dingtao ceramics 3, gas-entered passageway 11 and outlet passageway 12 are separated in valve body 1 fully, and seal washer 14 shapes between Dingtao ceramics 3 and valve body 1 surface of contact are the figure of eight.Can or stagger with suction port 31 on the Dingtao ceramics 3 and air outlet 32 up/down perforations fully with the rotation of spool 2 in suction port 41 and air outlet 42 on the moving ceramic plate 4, also be provided with inlet hole 43 on the moving ceramic plate 4, and this inlet hole 43 can communicate with the suction port 31 on the Dingtao ceramics 3 with spool 2 rotations, guarantee that inflating cavity 21 is filled with pressurized gas all the time, be provided with O-ring seals 22 between moving ceramic plate 4 and spool 2 surface of contact.

Claims

1, a kind of gas valve, comprise valve body, spool, Dingtao ceramics and moving ceramic plate, it is characterized in that: described spool is located in the valve body rotationally, moving ceramic plate and Dingtao ceramics are located between spool and the valve body, moving ceramic plate rides over above the ceramics of Dingtao, Dingtao ceramics and valve body are fixed, moving ceramic plate and spool are fixing also can be with valve core rotation, spool end over against moving ceramic plate top is inflated cavity to internal shaping one, respectively be provided with suction port and air outlet on moving ceramic plate and the Dingtao ceramics, suction port on the ceramics of Dingtao and air outlet all the time with valve body on gas-entered passageway and outlet passageway communicate, be provided with seal washer between Dingtao ceramics and the valve body surface of contact, can or stagger with suction port on the ceramics of Dingtao and air outlet up/down perforation fully with the rotation of spool in suction port and air outlet on the moving ceramic plate, also be provided with inlet hole on the moving ceramic plate, and this inlet hole can communicate with the suction port on the ceramics of Dingtao with the spool rotation, guarantee that inflating cavity is filled with pressurized gas all the time, also be provided with seal ring between moving ceramic plate and the spool surface of contact.

2, according to the described gas valve of claim 1, it is characterized in that: gas-entered passageway and outlet passageway on the described valve body are located along the same line, valve body bottom surface between gas-entered passageway and the outlet passageway plate washer that upwards is shaped, this plate washer extends below the ceramics of Dingtao, and gas-entered passageway and outlet passageway are separated in valve body fully.

3, according to claim 1 or 2 described gas valves, it is characterized in that: the seal washer shape between described Dingtao ceramics and the valve body surface of contact is the figure of eight.

4, according to the described gas valve of claim 1, it is characterized in that: described valve body upper end-hole has the breach of one section 90 degree arc length, the outer wall of described spool is provided with a lug, lug hangs on the breach of valve body upper end-hole and rotates in this breach with the rotation of spool, makes suction port, air outlet and inlet hole and suction port on the ceramics of Dingtao and air outlet contraposition on the moving ceramic plate.

5, according to the described gas valve of claim 1, it is characterized in that: described moving ceramic plate and Dingtao ceramics radially respectively stretch out two ears along it and are used for fixing with spool and valve body.