CN2358308Y

CN2358308Y - Antifreezing valve

Info

Publication number: CN2358308Y
Application number: CN 99203546
Authority: CN
Inventors: 李治安; 李滨辉
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-02-11
Filing date: 1999-02-11
Publication date: 2000-01-12
Anticipated expiration: 2009-02-11

Abstract

The utility model discloses an antifreezing valve, comprising a branch passage, a switch seat, a switch core, a pressure chamber, a corrugated pipe and a diversion hole. The utility model is characterized in that the lower part of the switch core is provided with a half through pipe, wherein, the pipe wall of which is provided with at least one pressure relief hole of the switch core; the switch seat is provided with a pressure relief hole of the switch seat corresponding to the pressure relief hole of the switch core; the pressure relief hole of the switch seat is communicated with the branch passage. The antifreezing valve can lead medium to pass through in a high flow rate. The antifreezing valve can also lead medium to continuously pass through in a lower flow rate according to the requirement. Especially in cold area, medium with a low flow rate continuously flows, and a pipe line can not be frozen.

Description

Antifreezing valve

The utility model relates to the valve that a kind of controlling liquid flows in pipeline, be suitable for especially using when needs are regulated the fluid flow size.

China Patent No. is 97229665.4 " a kind of valve shut-off means ", it is to establish the pressure release affluent channel on valve gap and valve body, operation equipment is arranged on the affluent channel, bellows is arranged in the valve body, have pod apertures on the bellows, the manipulation operations device can make the elastic bellows lifting in the valve body, plays the effect that medium is passed through or end.It can open and close the big caliber valve of high pressure with little actuation force, laborsaving saving time, for operation equipment miniaturization, automation are provided convenience, but it also has deficiency, it can only open and close, rate-of flow big or small wayward can't be used with the place that prevents to freeze needing medium to have less flow constantly to flow.

The utility model is intended to provide a kind of antifreezing valve, and it not only can make passing through of medium large flow, and can constantly pass through with less flow as required, especially at cold area, and constantly mobile small flow media flow, pipeline is unlikely to freeze.

Task of the present utility model is to realize like this, it includes affluent channel, switch base, switch core, pressure chamber, bellows, pod apertures, it is characterized in that, the bottom of switch core is half siphunculus, has a switch core relief hole on the tube wall of half siphunculus at least, one and the corresponding switch base relief hole of switch core relief hole are arranged on the switch base, and switch base relief hole and affluent channel are communicated with.

The utility model is under normal state, can open and close the medium that makes big flow by or end, when needing, as long as change the position of switch core than small flow, because the switch core relief hole in a plurality of different apertures is arranged, so also can regulate of the size of " than small flow "." the long stream of little water " can be arranged at cold area like this, make pipeline avoid freezing, guarantee that media flow is unimpeded.

Fig. 1 is the structural representation of full closing state of the present utility model.

Fig. 2 is the structural representation of big discharge value state of the present utility model.

Fig. 3 is the structural representation of rill flux state of the present utility model.

In the accompanying drawings: 1. affluent channel 2. switch bases 3. switch base relief holes 4. switch cores 5. switch core relief holes 6. half siphunculus 7. pressure chambers 8. bellowss 9. pod apertures 10. water intakes 11. water outlets

Below in conjunction with accompanying drawing an embodiment of the present utility model is described in further detail.

Switch core 4 is the main switch of valve, its lower end is half siphunculus 6, on half siphunculus, 6 walls, has a switch core relief hole 5 at least, the pore size of each switch core relief hole 5 differs, vary, switch base 2 is that a Sealing inwall has the rubber in the sulfuration, which is provided with and switch core relief hole 5 corresponding switch base relief holes 3, this switch base relief hole 3 and affluent channel 1 are connected, and another opening and the water outlet 11 of this affluent channel 1 communicate.

The working principle of this valve is such: when needs are opened valve, make large aperture switch core relief hole 5 corresponding switch base relief holes 3 on the switch core 4 by operation equipment, affluent channel 1 is opened, medium is by half siphunculus 6, flow to affluent channel 1 by switch core relief hole 5 and switch base relief hole 3 again, Zhongdao water outlet 11, pressure in this while pressure chamber 7 descends, the pressure of bellows 8 lower ends is greater than the pressure on its top, the pressure difference that produces forces bellows 8 to shrink, and valve is opened.In like manner, when the switch core relief hole 5 on the switch core 4 was in closed condition, medium entered in the pressure chamber 7 by the pod apertures on the bellows 89, the balance of pressure at two ends up and down of bellows 8, and bellows 8 elongations reset water outlet 11 sealings.When adjusting switch core 4 and make the corresponding switch base relief hole 3 of the switch core relief hole 5 of small aperture, because the aperture of switch core relief hole 5 is far smaller than the aperture of pod apertures 9, so the pressure in the pressure chamber 7 does not almost change, bellows 8 leans on the elastic force of self with valve closing, this moment, the medium of small flow promptly entered pressure chamber 7 from pod apertures 9, and after half siphunculus 6, switch core relief hole 5, switch base relief hole 3 enter affluent channel 1, finally flow out from water outlet 11, realized " doing little by little without a break ".

Claims

1, antifreezing valve, it includes affluent channel, switch base, switch core, pressure chamber, bellows, pod apertures, it is characterized in that: the bottom of switch core is half siphunculus, has a switch core relief hole on the tube wall of half siphunculus at least, one and the corresponding switch base relief hole of switch core relief hole are arranged on the switch base, and switch base relief hole and affluent channel are communicated with.