CN102192332A

CN102192332A - Anti-siphon vacuum break valve

Info

Publication number: CN102192332A
Application number: CN2010101199391A
Authority: CN
Inventors: 梅静容; 祝云霞; 王朝阳
Original assignee: NINGBO HUACHENG VALVE CO Ltd
Current assignee: NINGBO HUACHENG VALVE CO Ltd
Priority date: 2010-03-08
Filing date: 2010-03-08
Publication date: 2011-09-21
Anticipated expiration: 2030-03-08
Also published as: CN102192332B

Abstract

The invention relates to an anti-siphon vacuum break valve which comprises a valve body, a water inlet, a water outlet, a restoring spring and a valve plug and is characterized in that the valve plug comprises an upper disk, a lifting valve and a lower disk; the restoring spring enables the lower disk to maintain a downward seal water inlet trend; the upper disk and the top of the lifting valve are connected by virtue of a connecting piece; the lower disk and the bottom of the lifting valve are spliced by virtue of a bolt; a bearing nut is sleeved on the bolt; the bearing nut is arranged between the lower disk and the lifting valve so as to support the lifting valve; the lower disk and a first valve port are matched; the upper disk and a second valve port are matched; the first valve port is arranged at the water inlet; and the second valve port is arranged at an air inlet, thus the structure of the break valve is more reasonable, and the break valve is more convenient to assemble.

Description

Anti-siphon vacuum cutout valve

Technical field

The present invention relates to a kind of anti-siphon vacuum cutout valve.

Background technique

Owing to often being easy to generate vacuum or being lower than barometric pressure because of reason such as cut off the water in the water supply system, cause pipe-line system siphon water backflow phenomenon, severe patient may cause the pollution of water supply system, in traditional technology, official seal siphon reflux is arranged for effectively anti-siphon, simultaneously guarantee that again system does not reveal, by being set, the one-way valve diaphragm seal that links realizes the mode of the sealing mouth same period, often cause the water flow pressure loss of pipe-line system excessive, the patent No. to have occurred be 200620042501.7 a kind of flashing valve anti-siphon means in order to address this problem, and comprises an envelope pore film sheet, leachy diaphragm support, corrugated telescopic cover, ventilation support, Returnning spring, limited ring, bayonet lock, O type circle, wherein diaphragm support props up envelope pore film sheet, and corrugated telescopic cover is enclosed within on the diaphragm support all the time, diaphragm support can move up and down in ventilation support, and ventilation support is communicated with outside air.Compare with existing anti-siphon reflux, have very low relatively water flow pressure loss, be not easy simultaneously to produce and leak, its defective is that assembling is complicated, needs further to improve.

Summary of the invention

Technical problem to be solved by this invention is the present situation at prior art, provides a kind of both rational in infrastructure, again the anti-siphon vacuum cutout valve of assembling easily.

The present invention solves the problems of the technologies described above and the technological scheme that adopts is: a kind of anti-siphon vacuum cutout valve, comprise valve body, water intake, water outlet, Returnning spring and spool, it is characterized in that: described spool comprises dish, poppet valve and lower wall, Returnning spring keeps down lower wall and is sealed into mouth of a river trend, the described dish of going up utilizes link to be connected with the top of poppet valve, the bottom of described lower wall and poppet valve utilizes the bolt socket connection, on this bolt, be with bearing screwed cap, described bearing screwed cap is arranged between lower wall and the poppet valve, be used for supporting poppet valve, described lower wall matches with first valve port, last dish matches with second valve port, this first valve port is arranged on the lower water inlet place, and second valve port is arranged on the upper air inlets place.

As improvement, described lower wall is being set with the triangle saddle near inlet end, and the triangle saddle adopts bolt to be connected with lower wall.

As improvement, be provided with pad between described link and the last dish.

As improvement, the described second valve port place is provided with bonnet and sealing gasket, and this bonnet is arranged on the top of valve body, and the bottom outside face and the valve interior wall of described bonnet fit tightly, and sealing gasket is fixedly installed on the bottom of bonnet.

As improvement, the top of described valve body is with cover cap, and this cover cap utilizes Philip's head screw to be connected with the top of bonnet.

Compared with prior art, the invention has the advantages that: be connected to each other between dish, poppet valve and the lower wall in the utilization and make its structure more reasonable, be more prone to assembling, make it fundamentally solve the problem of siphon and water conservancy diversion, the setting of bonnet, sealing gasket has also better prevented the leakage of liquid, in order better to support spool, on lower wall, be provided with the triangle saddle, the reasonable integral structure practicality.

Description of drawings

Fig. 1 is a structure sectional view of the present invention;

Fig. 2 is the plan view of poppet valve among the present invention;

Fig. 3 is an A-A sectional view among Fig. 2;

Fig. 4 is the plan view of bonnet among the present invention;

Fig. 5 is the sectional view of Fig. 4.

Embodiment

Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.

A kind of as described in Figure 1 anti-siphon vacuum cutout valve, comprise valve body 1, water intake 2, water outlet 3, Returnning spring 4 and spool, this water intake 2 is arranged on the bottom of valve body 1, water outlet 3 is arranged on a side of valve body 1, air intlet 19 is arranged on the upper end of valve body 1, Returnning spring 4 and spool are arranged in the valve pocket 5, described spool comprises dish 6, poppet valve 7 (shown in Fig. 2～3) and lower wall 8, described Returnning spring 4 is arranged between lower wall 8 and the bonnet 10, lower wall 8 is kept down be sealed into mouth of a river trend, be with cover cap 9 at the top of valve body 1, below cover cap 9, be provided with bonnet 10, the top of this bonnet 10 (shown in Fig. 4～5) utilizes countersunk head Philip's head screw 11 to be connected with the center of cover cap 9, the bottom outside face of described bonnet 10 and the top inner wall of valve body 1 fit tightly, be fixed with sealing gasket 12 in the bottom of bonnet 10, the described dish 6 gone up utilizes bolt 13 to be connected with the top of poppet valve 7, this bolt 13 passes the hole of pad 14 and last Pan6Chu and the worm structure in the poppet valve 7 is connected and fixed, pad 14 is arranged on bolt 13 and goes up between the dish 6, described lower wall 8 is utilizing bolt 15 to be connected with triangle saddle 16 near water intake 2 ends, is furnished with nut 17 in the bottom of this bolt 15, the bottom endoporus of poppet valve 7 is inserted at the top of described bolt 15, the bottom of poppet valve 7 is linked to each other with lower wall 8, on this bolt 15, also be arranged with bearing screwed cap 18, this bearing screwed cap 18 is arranged between lower wall 8 and the poppet valve 7, supports poppet valve 7.Lower wall 8 is matched with first valve port, on coil 6 and match with second valve port, described first valve port is arranged on the lower water inlet place, second valve port is arranged on upper air inlets 19 places.

Assembling should be cleaned each part earlier before the present invention, must not have any impurity to bring in the valve body 1, need before coming into operation through the 0.6Mpa air tightness test, pressurize after 15 seconds no any leakage just can normally use.

Working principle of the present invention is further described:

When water intake 2 water inlet and water flow pressure just often, under the effect of hydraulic pressure, overcome the elastic force of Returnning spring 4, valve body 1 separates with lower wall 8, first valve port is opened, under the effect of hydraulic pressure, lower wall 8 drives poppet valve 7 and goes up dish 6 and up move, and then dish 6 and bonnet 10 are combined closely simultaneously, second valve port is closed, water supply system is separated with air intlet, and anti-sealing overflows, current are normal in the pipeline at water intake 2 and water outlet 3 places;

When the water flow pressure that does not have water or a water outlet 3 when water intake 2 is higher than the water flow pressure of water intake 2, under the effect of Returnning spring 4 power, lower wall 8 contacts with valve body 1, and first valve port is closed, and prevents aqueous reflux, and then bonnet 10 and last dish 6 are broken away from, second valve port is opened, and suction port has air to enter, and has destroyed the vacuum in the water system pipeline, prevent the water siphon or the backflow of water outlet 3, prevented from well that water from causing secondary pollution and preventing water consumption device or water pump are caused impact of water hammer.

Claims

1. anti-siphon vacuum cutout valve, comprise valve body, water intake, water outlet, Returnning spring and spool, it is characterized in that: described spool comprises dish, poppet valve and lower wall, Returnning spring keeps down lower wall and is sealed into mouth of a river trend, the described dish of going up utilizes link to be connected with the top of poppet valve, the bottom of described lower wall and poppet valve utilizes the bolt socket connection, on this bolt, be with bearing screwed cap, described bearing screwed cap is arranged between lower wall and the poppet valve, be used for supporting poppet valve, described lower wall matches with first valve port, last dish matches with second valve port, described first valve port is arranged on the lower water inlet place, and second valve port is arranged on the upper air inlets place.

2. anti-siphon vacuum cutout valve according to claim 1 is characterized in that: described lower wall is being set with the triangle saddle near inlet end, and the triangle saddle is connected with lower wall by same bolt.

3. anti-siphon vacuum cutout valve according to claim 1 is characterized in that: be provided with pad between described link and the last dish.

4. anti-siphon vacuum cutout valve according to claim 1, it is characterized in that: the described second valve port place is provided with bonnet and sealing gasket, this bonnet is arranged on the top of valve body, and the bottom outside face and the valve interior wall of described bonnet fit tightly, and sealing gasket is fixedly installed on the bottom of bonnet.

5. anti-siphon vacuum cutout valve according to claim 4, it is characterized in that: the top of described valve body is with cover cap, and this cover cap utilizes Philip's head screw to be connected with the top of bonnet.