CN2672559Y

CN2672559Y - Safety valve reflux structure of electric water heater

Info

Publication number: CN2672559Y
Application number: CN 03209829
Authority: CN
Inventors: 詹征
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-08-18
Filing date: 2003-08-18
Publication date: 2005-01-19
Anticipated expiration: 2013-08-18

Abstract

The utility model relates to the improvement of a safety valve reflux structure of a water heater. The utility model comprises a reflux valve seat, a sealing gasket, a water outlet disk, a check spring which is arranged on the water outlet disk and the reflux valve seat, a water press column, a reflux spring and a press cap, wherein, the water press column, the reflux spring and the press cap are orderly arranged in the reflux valve seat, wherein, a ring groove is arranged on the side wall of the port of the reflux valve seat; the sealing gasket is embedded and fixed on the ring groove, and is abutted to a water inlet of the valve body to be sealed by the check spring; the water outlet disk is abutted on a water outlet of the valve body. Because reflux water enters the press cap by pushing aside the water press column, the reflux water is decompressed directly by the water inlet of a safety valve, and the sealing gasket can not be impacted, oscillation and whistle can not be generated or the sealing gasket is flushed out, and return check and seal can not ensured. Compared with the prior art, the utility model has the advantages of simple structure, long service life, no whistle, etc.

Description

The electric water heater safety valve return-flow structure

Technical field

The utility model relates to the safety valve that uses on a kind of water heater, particularly to the improvement of water heater safety's valve return-flow structure.

Background technology

Return-flow structure is the critical piece in water heater safety's valve, and it mainly acts on is that the electric heater inner bag is shielded, and the reverse sealing function when running water is cut off the water supply.The electric water heater safety valve of present domestic use is usually because the problem of this structure, and when running water to certain pressure and oppositely during pressure release, uttering long and high-pitched sounds appears in safety valve easily; When running water was cut off the water supply, hot water flow backwards; And during the anti-pressure release of inner bag high pressure, sealing gasket is recoiled by high pressure and can not import the centre bore of return valve seat again, like this, causes the check-valves disabler.

The utility model content

The purpose of the utility model is to provide a kind of no howling, when pipeline changes suddenly, and the non-wiping electric water heater safety valve return-flow structure of seal.

The technical solution of the utility model is such: it is arranged in the electric water heater safety valve, comprise return valve seat, be contained in sealing gasket, the water tray at return valve seat two ends respectively and be contained in water tray and return valve seat on check spring and place setting-out post, reflux spring, pressure cap in the return valve seat successively.Wherein be positioned at return valve seat port sidewall and be provided with ring recess, sealing gasket is mounted on the ring recess, and is sealed on the water inlet of valve body by the check spring roof pressure; Water tray by roof pressure on the delivery port of valve body.

Because sealing gasket is embedded on the return valve seat outer wall, water heater safety's valve recirculation water on the delivery port when pressure release enters pressure cap by backing down the setting-out post, really connected the pressure release of safety valve water inlet, and do not impact sealing gasket, do not utter long and high-pitched sounds so can not produce vibration, or wash out sealing gasket and can not guarantee non-return sealing.

Obviously, the utility model is compared with existing technology, has advantages such as simple in structure, long service life, no howling.

Following structure embodiment shown in the drawings is described in further detail the utility model.

Description of drawings

Fig. 1 is the structural representation that adopts the electric hot water safety valve of the utility model structure, and Fig. 2 is the utility model structure enlarged drawing, and Fig. 3 is an another kind of structural representation of the present utility model.

Among the figure: 1, return valve seat; 11, inlet opening; 12, apopore; 13, ring recess; 2, sealing gasket; 3, pressure cap; 4, reflux spring; 5, check spring; 6, setting-out post; 7, little sealing gasket; 8, water tray; 9, valve body; 91, water inlet; 92, delivery port; 61, guide post; 611, spacing projection.

The specific embodiment

Referring to Fig. 1, Fig. 2, adopt the electric heater return-flow structure of the utility model structure to comprise return valve seat 1, sealing gasket 2, water tray 8 and be contained in the check spring 5 on water tray 8 and the return valve seat 1 and place setting-out post 6, reflux spring 4, pressure cap 3 in the return valve seat 1 successively.Return valve seat 1 is cylindrical, pressure release inlet opening 11 and pressure release apopore 12 are arranged on it, pressure release inlet opening 11 is towards safety valve valve body 9 water inlets 91, pressure release apopore 12 is towards valve body 9 delivery ports 92, water tray 8 is fixed on return valve seat 1 towards water inlet 91 1 ends, and by check spring 5 roof pressures on water inlet 91; Have ring recess 13 on return valve seat 1 apopore 12 outer walls, sealing gasket 2 is embedded on the ring recess 13, and by check spring 5 roof pressures on delivery port 92.Pressure cap 3 is fixed on the apopore 12, and on inlet opening 11, the other end of reflux spring 4 is against on the pressure cap 3 setting-out post 6 by reflux spring 4 closedtops.

Setting-out post 6 also can have guide post 61 and little sealing gasket 7 stretches out inlet opening 11 in the utility model, and be provided with spacing projection 611 on guide post 61 tops, like this, can limit under the effect of pressure reduction, freely stretch stroke and be not separated from water tray 8 of setting-out post 6, referring to Fig. 3.

Claims

1, a kind of electric water heater safety valve return-flow structure, be arranged in the electric water heater safety valve, it comprises return valve seat (1), be contained in the sealing gasket (2) at return valve seat (1) two ends respectively, water tray (8), be contained in the check spring (5) on water tray (8) and the return valve seat (1), place the setting-out post (6) in the return valve seat (1) successively, reflux spring (4), pressure cap (3), it is characterized in that: be positioned at return valve seat (1) port sidewall and be provided with ring recess (13), sealing gasket (2) is embedded on the ring recess (13), and withstood on water inlet (91) sealing of valve body (9), water tray (8) is withstood on the delivery port (92) of valve body (9).

2, according to the described electric water heater safety valve return-flow structure of claim 2, it is characterized in that: described setting-out post (6) can have guide post (61), and guide post (61) top is provided with spacing projection (611).