CN203463672U

CN203463672U - Anti-freezing valve

Info

Publication number: CN203463672U
Application number: CN201320551528.9U
Authority: CN
Inventors: 张瀛钊; 陈通
Original assignee: TIANJIN BUGATTI ENVIRONMENTAL PROTECTION TECHNOLOGY DEVELOPMENT Co Ltd
Current assignee: TIANJIN BUGATTI ENVIRONMENTAL PROTECTION TECHNOLOGY DEVELOPMENT Co Ltd
Priority date: 2013-09-04
Filing date: 2013-09-04
Publication date: 2014-03-05
Anticipated expiration: 2023-09-04

Abstract

The utility model discloses an anti-freezing valve suitable for cold regions in the north. The anti-freezing valve mainly comprises a water inlet (7), a water outlet (2), a valve body (6), a valve rod (3), a valve core (8), a valve seat (10) and a handle (1), wherein the upper half part of the valve core (8) extends into the valve body (6), and the lower half part of the valve core extends into the water inlet (7); the inner cavity of the water outlet (2) is communicated with the inner cavity of the valve body; the valve seat (10) is arranged under the joint of the water outlet and the valve body; a seal ring (9) is arranged between the valve seat and the lower end surface of the valve core; openings are formed in the upper and lower ends of the valve body (6); a telescopic cavity (5) matched with the inner cavity of the valve body in size is formed in the valve body; the outer circle of the telescopic cavity (5) is corrugated pipe-shaped. When the handle is operated to close the valve, the handle is rotated to lift up the valve rod to drive the upper end surface of the telescopic cavity to move up, the space of the telescopic cavity is increased, the valve core moves up under the effect of a spring, the passages of the water inlet and the water outlet are closed, and residual water in the water outlet and the freezable section at the upper end flows into the telescopic cavity, so that the breakup of a valve and a pipeline due to freezing expansion of the residual water in the valve body and the pipeline is prevented.

Description

Antifreezing valve

Technical field

The utility model relates to a kind of device of controlling flow of fluid, relates in particular to a kind of antifreezing valve.

Background technique

Chinese invention patent application publication No. CN102966766A discloses a kind of antifreezing valve, on the basis of existing valve, set up weep hole, by outside the water expulsion valve of retaining in valve closing rear valve body, solved the problem of cold time valve bursting by freezing, but this valve generally can only tilt to be arranged on wall, have certain use narrow limitation, the water of discharging besides valve body is a kind of waste after all, is also a kind of environmental pollution.

Summary of the invention

In order to overcome the deficiency of prior art valve, the utility model provides a kind of valve, and this valve can not only solve the problem of valve bursting by freezing cold season, and easy to use, simple in structure.

The technological scheme that the utility model solves its technical problem employing is: valve mainly comprises water intake, water outlet, valve body, valve rod, spool, valve seat, handle, upper half part of spool stretches in valve body, lower half portion is in water intake, water outlet inner chamber is communicated with body cavity, water outlet and valve body be communicated with position have valve seat below, between valve seat and spool lower end surface, there is seal ring, there is opening at the upper and lower two ends of valve body, in it, also have shape and the corresponding telescopic cavity of its inner cavity size, the cylindrical of telescopic cavity is corrugated, upper-end surface is hard material, lower end and valve seal connect, the first half of spool is stretched in telescopic cavity by the lower end mouth of valve body, Lower Half is placed in water inlet, the upper end-hole of valve body is fixed with conduit, in conduit, there is valve rod, valve rod lower end is connected in the upper-end surface of telescopic cavity, upper end and handle interlock.As everyone knows, at below ground certain depth, although at cold winter temperature also above zero, can not freeze, this valve in use, what inside have that the valve body of telescopic cavity is partly embedded in underground certain depth does not freeze place, work as operating grip, during throttle down, handle rotates mentions valve rod, drive on telescopic cavity upper-end surface and move, telescopic cavity space increases, spool moves under the effect of spring, close into, the path of water outlet, water outlet and can the section of freezing in upper end the remaining water of part flow into telescopic cavity, prevented because the freezing expansion of remaining water in valve body and pipeline makes bursting apart of valve and pipeline.

The beneficial effects of the utility model are, utilize backwater principle to prevent the expansion of freezing of remaining water, bursting by freezing valve; Can install by forward, meet convention, easy to use; Only increased a telescopic cavity, simple in structure.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the utility model is described further.

Fig. 1 is an embodiment's of the utility model longitudinal section organigram.

Fig. 2 is the use schematic diagram of the utility model antifreezing valve.

In figure: 1. handle, 2. water outlet, 3. valve rod, 4. conduit, 5. telescopic cavity, 6. valve body, 7. water intake, 8. spool, 9. seal ring, 10. valve seat, 11. external water pipes, 12. ground.

Embodiment

In the embodiment shown in fig. 1, valve mainly comprises water intake (7), water outlet (2), valve body (6), valve rod (3), spool (8), valve seat (10), handle (1), upper half part of spool (8) stretches in valve body (6), lower half portion is in water intake (7), water outlet (2) inner chamber is communicated with body cavity, water outlet and valve body be communicated with position have valve seat (10) below, between valve seat and spool lower end surface, there is seal ring (9), there is opening at the upper and lower two ends of valve body (6), in it, also have shape and the corresponding telescopic cavity of its inner cavity size (5), the cylindrical of telescopic cavity (5) is corrugated tube shape, upper-end surface is hard material, lower end and valve body (6) sealed connection, the first half of spool (8) is stretched in telescopic cavity by the lower end mouth of valve body, Lower Half is placed in water intake, the upper end-hole of valve body (6) is fixed with conduit (4), in conduit, there is valve rod (3), valve rod (3) lower end is connected in the upper-end surface of telescopic cavity (5), on handle with position local device, there are two axis holes, on one is connected to water outlet and valve body connecting leg by bearing pin, another and valve rod link.

When above-mentioned antifreezing valve is used, water intake is communicated with the external water pipe (11) of water supply, valve body (6) be embedded in the following certain depth in ground (12) in cold season also nonfreezing aspect.

Claims

1. an antifreezing valve, mainly comprise water intake (7), water outlet (2), valve body (6), valve rod (3), spool (8), valve seat (10), handle (1), spool (8) is in valve body (6), water outlet (2) inner chamber is communicated with water intake (7) by spool (8), it is characterized in that: there is opening at the upper and lower two ends of valve body (6), in it, also have shape and the corresponding telescopic cavity of its inner cavity size (5), the cylindrical of telescopic cavity is corrugated, upper-end surface is hard material, lower end and valve body (6) sealed connection, the first half of spool (8) is stretched in telescopic cavity (5) by the lower end mouth of valve body (6), Lower Half is placed in water intake, the upper end-hole of valve body (6) is fixed with conduit (4), in conduit, there is valve rod (3), valve rod lower end is bound up on the upper-end surface of telescopic cavity (5), upper end and handle (1) interlock.

2. antifreezing valve according to claim 1, is characterized in that: the upper-end surface of described telescopic cavity (5) is hard material.

3. antifreezing valve according to claim 1, is characterized in that: described handle (1) is upper has two axis holes with position local device, and on one is connected to water outlet and valve body connecting leg by bearing pin, another and valve rod link.