CN103438224A

CN103438224A - Frost valve

Info

Publication number: CN103438224A
Application number: CN2013104006939A
Authority: CN
Inventors: 张瀛钊; 杨银书
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: 2013-12-11

Abstract

The invention discloses a frost valve suitable for northern cold areas, which mainly comprises a water inlet (7), a water outlet (2), a valve body (6), a valve stem (3),, a valve core (8), a valve seat (10) and a grip (1), wherein the upper part of the valve core (8) extends into the valve body (6), and the lower part is in 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 communication position 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; the upper and lower ends of the valve body (6) are respectively provided with an opening; a retractable chamber (5) with the corresponding shape and size with the inner cavity is arranged in the valve body (6); and the outer ring of the retractable chamber (5) is in a corrugated pipe shape, When the grip (1) is operated to close the valve, the grip is rotated to lift the valve stem so as to drive the upper end surface of the retractable chamber to move upwards, so that the space of the retractable chamber is increased; the valve core moves upwards under the action of the spring to close the channels of the water inlet and the water outlet; and residual water at the water outlet and the freezable section on the upper end flows into the retractable chamber, thereby preventing the valve and pipeline from cracking due to the freezing expansion of the residual water in the valve body and pipeline.

Description

Antifreezing valve

Technical field

The present invention relates to a kind of device of controlling flow of fluid, relate in particular to a kind of antifreezing valve.

Background technique

Chinese invention patent application publication No. CN102966766A discloses a kind of antifreezing valve, set up weep hole on the basis of existing valve, by outside the water expulsion valve of retaining in the 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, certain use narrow limitation is arranged, and 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 invention provides a kind of valve, 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 present invention 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, the water outlet inner chamber is communicated with body cavity, water outlet and valve body be communicated with position below valve seat is arranged, between valve seat and spool lower end surface, seal ring is arranged, there is opening at the upper and lower two ends of valve body, also have shape and the corresponding telescopic cavity of its inner cavity size in it, 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, valve rod is arranged in conduit, the valve rod lower end is connected in the upper-end surface of telescopic cavity, upper end and handle interlock.As everyone knows, at the below ground certain depth, although at cold winter temperature also above zero, can not freeze, this valve in use, what inside have the valve body of telescopic cavity partly to be embedded in underground certain depth does not freeze place, work as operating grip, during throttle down, handle rotates mentions valve rod, drive on the telescopic cavity upper-end surface and move, the telescopic cavity space increases, spool moves under the effect of spring, close into, the path of water outlet, water outlet reaches in upper end can flow into telescopic cavity by the section of freezing remaining water partly, prevented that due to remaining water the freezing expansion in valve body and pipeline makes bursting apart of valve and pipeline.

The invention has the beneficial effects as follows, utilize the 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.

The accompanying drawing explanation

Below in conjunction with drawings and Examples, the present invention is described further.

Fig. 1 is the longitudinal section organigram of one embodiment of the invention.

Fig. 2 is the use schematic diagram of antifreezing valve of the present invention.

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 below valve seat (10) is arranged, seal ring (9) is arranged between valve seat and spool lower end surface, there is opening at the upper and lower two ends of valve body (6), also have shape and the corresponding telescopic cavity of its inner cavity size (5) in it, 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), valve rod (3) is arranged in conduit, valve rod (3) lower end is connected in the upper-end surface of telescopic cavity (5), on handle with position local device, two axis holes are arranged, 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 intake (2) inner chamber is communicated with water intake (2) by spool (8), it is characterized in that: there is opening at the upper and lower two ends of valve body (6), also have shape and the corresponding telescopic cavity of its inner cavity size (5) in it, 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), valve rod (3) is arranged in conduit, the 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, it is characterized in that: the cylindrical corrugated material of described telescopic cavity (5) is flexible 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.