CN200965075Y

CN200965075Y - Cut-off valve

Info

Publication number: CN200965075Y
Application number: CN 200620159169
Authority: CN
Inventors: 何应广
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-05-18
Filing date: 2006-11-22
Publication date: 2007-10-24
Anticipated expiration: 2016-11-22

Abstract

The utility model relates to a check valve which controls the on-and-off of the firedamp, liquefied gas and water, etc. The utility model includes a valve body and a valve core; the valve body is provided with an inlet passage and an outlet passage; the valve core is rotatablely arranged in the valve body; the inlet passage and the outlet passage are in line; the valve core is provided with a connecting passage; the external walls of the valve core at two sides of the connecting passage are respectively provided with a concave hole which is embedded with an elastic sealing pad whose area is larger than the areas of the inlet passage and the outlet passage; the connecting passage is communicated with the inlet passage and the outlet passage and is in the same line with the inlet passage and the outlet passage; after the connecting passage is staggered with the inlet passage and the outlet passage, the two elastic sealing pads are respectively and correspondingly closed the inlet passage and the outlet passage. The utility model has simple sound structure, low cost, large airflow, good sealing performance, safe and reliable usage, beautiful appearance, and can be widely suitable for controlling the on-and-off of the firedamp, liquefied gas and water, etc.

Description

Stop valve

Technical field

The utility model relates to a kind of stop valve that break-makes such as biogas, liquefaction G﹠W are used of controlling.

Background technique

Existing this gas valve complex structure, the cost height, the expensive agricultural material market that is not suitable for of price, and the gas-entered passageway in the valve body does not lead directly to the circulation passage of giving vent to anger, they are separated in valve body fully to be provided with partition between gas-entered passageway and outlet passageway, gas-entered passageway and outlet passageway are realized the connected sum blocking-up by the back pressure chamber in the valve core, and the throughput that this mode is passed through is little.

Summary of the invention

Therefore, the purpose of this utility model is to provide a kind of simple in structure, cost is low and flow is big stop valve.

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

A kind of stop valve, comprise valve body and spool, be provided with stand in channel in the valve body and go out passage, spool is rotating to be located in the valve body, described stand in channel and go out passage and be positioned at always on the line, be provided with communication passage in the valve core, respectively be provided with a pit on the spool outer wall of communication passage both sides, be inlaid with elastic sealing gasket in the pit, the area of elastic sealing gasket is greater than stand in channel and go out aisle spare, be located along the same line with it when communication passage is communicated with stand in channel and goes out passage, communication passage stagger stand in channel and go out passage after, two elastic sealing gaskets can corresponding respectively sealing stand in channels and are gone out passage.

Be provided with between described spool bottom and the body cavity bottom and limit the qualification mechanism that spool rotates in 90 degree scopes.

Described qualification mechanism is that the spool bottom surface is stretched out a card article downwards, outstanding two fixture blocks on the paired angle in corresponding body cavity bottom surface, and card article is located between two fixture blocks.

The utility model structural design advantages of simple, cost is low, and throughput is big, and good seal performance is safe and reliable, and beautiful shape can be widely used in controlling the break-make of biogas, gas, natural G﹠W etc.

Description of drawings

Structural representation when Fig. 1 ventilates for present embodiment;

Fig. 2 is the A-A sectional view;

Structural representation when Fig. 3 closes for present embodiment;

Fig. 4 is the axial decomposing schematic representation of present embodiment;

Fig. 5 is the plan view of valve body.

Embodiment

The utility model is described in further detail below in conjunction with drawings and Examples.

Embodiment, in conjunction with Fig. 1 to Fig. 5, a kind of gas valve, comprise valve body 1 and spool 2, valve body 1 is provided with stand in channel 3 and goes out passage 4, spool 2 is by pressing female 5 rotatable being located in the valve body 1, spool 2 tops are provided with handwheel 6, at stand in channel 3 with go out to be provided with the communication passage 7 that is communicated with stand in channel 3 and goes out passage 4 in spool 2 bodies between the passage 4, respectively be provided with a pit 8 on spool 2 outer walls of communication passage 7 both sides, be inlaid with elastic sealing gasket 9 in the pit 8, the surface area of two elastic sealing gaskets 9 is greater than stand in channel 3 and the area that goes out passage 4, the three was positioned on the straight line when communication passage 7 was communicated with stand in channels and goes out passage, communication passage stagger stand in channel and go out passage after, two elastic sealing gaskets 9 are with can corresponding respectively sealing stand in channel 3 and go out passage 4.

Spool 2 bottom surfaces are stretched out a card article 10 downwards, outstanding two fixture blocks 11 on the paired angle in corresponding valve body 1 inner chamber bottom surface, and card article 10 is located between two fixture blocks 11, and spool 2 can only be done 90 degree rotations between two fixture blocks 11, realize closing the gas venting.Spool 2 outer walls of communication passage 7 tops are provided with seal ring 12.

Claims

1, a kind of stop valve, comprise valve body and spool, be provided with stand in channel in the valve body and go out passage, spool is rotating to be located in the valve body, it is characterized in that: described stand in channel and go out passage and be positioned at always on the line, be provided with communication passage in the valve core, respectively be provided with a pit on the spool outer wall of communication passage both sides, be inlaid with elastic sealing gasket in the pit, the area of elastic sealing gasket is greater than stand in channel and go out aisle spare, be located along the same line with it when communication passage is communicated with stand in channel and goes out passage, communication passage stagger stand in channel and go out passage after, two elastic sealing gaskets can corresponding respectively sealing stand in channels and are gone out passage.

2, according to the described stop valve of claim 1, it is characterized in that: be provided with between described spool bottom and the body cavity bottom and limit the qualification mechanism that spool rotates in 90 degree scopes.

3, according to the described stop valve of claim 2, it is characterized in that: described qualification mechanism is that the spool bottom surface is stretched out a card article downwards, outstanding two fixture blocks on the paired angle in corresponding body cavity bottom surface, and card article is located between two fixture blocks.