CN207005370U - One kind exempts from drain valve seat low resistance force counter flow stop - Google Patents
One kind exempts from drain valve seat low resistance force counter flow stop Download PDFInfo
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- CN207005370U CN207005370U CN201720808710.6U CN201720808710U CN207005370U CN 207005370 U CN207005370 U CN 207005370U CN 201720808710 U CN201720808710 U CN 201720808710U CN 207005370 U CN207005370 U CN 207005370U
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- Prior art keywords
- valve seat
- valve body
- low resistance
- resistance force
- ring seal
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Abstract
It the utility model is related to SMART FLUID manufacturing field of equipment, more particularly to one kind exempts from drain valve seat low resistance force counter flow stop, including drain connection, sluicing flap, main valve body, spring base, spring, the first O-ring seal, valve rod, the second O-ring seal, auxiliary valve body, the 3rd O-ring seal, diaphragm, bonnet, piston, the 4th O-ring seal, regulating bolt.Sluicing flap directly contacts sealing with main valve body, and the intermediate connections of bonnet and valve rod are provided with piston and used as fluctuation adjuster.The utility model provides and a kind of can effectively avoid valve seat and O-ring from fastening product caused by not in place or valve seat loosens sluicing and the low resistance force counter flow stop for the phenomenon that causes when forefront pressure fluctuates larger to sluice without reason.
Description
Technical field
It the utility model is related to SMART FLUID manufacturing field of equipment, more particularly to one kind is exempted from drain valve seat low resistance force counter and prevented
Only device.
Background technology
Backflow preventer (backflow preventer) be it is a kind of using retaining element composition prevent feedwater piping
The device that current flow backwards, it is mainly used in urban water supply, water-supplying unit is into considered critical pipeline during general pollution unit water supply
Press water can only one-way flow waterpower control combination device.Its function is that Jie in pipeline is definitely prevented under any operating mode
Matter is flow backwards or siphon is flow backwards, and avoids flowing backwards the purpose polluted to reach.With the growth of backflow preventer service life, some are tight
Close reinforcing position can start to loosen, and larger fluctuation occur in valve forefront pressure sometimes, case above can cause to sluice
Phenomenon.Most of product in the market is all difficult to avoid problem above.
Therefore be badly in need of one kind can effectively avoid valve seat and O-ring fasten product caused by not in place or valve seat loosens sluice and before
Side pressure fluctuation causes to sluice without reason the low resistance force counter flow stop of phenomenon when larger.
Utility model content
In view of problem above, the utility model, which provides one kind, can effectively avoid valve seat from fastening not in place or valve with O-ring
Cause to sluice without reason the low resistance force counter flow stop of phenomenon when product caused by seat loosens sluices and forefront pressure fluctuation is larger.
In order to realize above-mentioned purpose of utility model, the utility model provides following technical scheme：
One kind exempts from drain valve seat low resistance force counter flow stop, including drain connection, sluicing flap, main valve in the utility model
Body, spring base, spring, the first O-ring seal, valve rod, the second O-ring seal, auxiliary valve body, the 3rd O-ring seal, diaphragm, valve
Lid, piston, the 4th O-ring seal, regulating bolt, the drain connection are located at backflow preventer bottom, the sluicing flap
Located at the top of drain connection, the main valve body is located at the left end of backflow preventer, and the sluicing flap directly connects with main valve body
Sealing is touched, can effectively avoid valve seat from fastening sealing leak caused by not in place or valve seat loosens with O-ring causes product to be let out always
Water.The stem bottom is connected with sluicing flap, is provided with spring inside the main valve body, the spring is fixed on spring base
On, for first O-ring seal on main valve body, second O-ring seal and the 3rd O-ring seal are located at auxiliary valve body
On, the auxiliary valve body is located at the offside of main valve body, and the diaphragm is located at valve rod top center position, plays isolating seal, institute
The intermediate connections for stating bonnet and valve rod are provided with piston, and the piston pumps, and make here as fluctuation adjuster
With the perpendicularity of raising valve rod and sluicing flap；Avoid causing the phenomenon to sluice without reason when forefront pressure fluctuation is larger.The work
Sealed between plug and bonnet by the 4th O-ring seal, the piston is adjusted provided with regulating bolt.
It is fixed below the sluicing flap provided with stator nut, the outside of the stator nut is provided with spacer.
The right part of the main valve body includes preceding non-return valve seat and preceding check valve disc, and the preceding non-return valve seat stops before being located at
Go back to the left side lower end of valve disc.
The left part of the auxiliary valve body includes rear non-return valve seat and rear check valve disc, and the rear non-return valve seat is in rear non-return
The left side upper end of valve disc.
The auxiliary valve body is provided with stud and hex nut is locked.
The upside of the diaphragm is provided with diaphragm top board, and the downside of the diaphragm is provided with diaphragm lower platen.
The diaphragm is locked on bonnet by hexagon thin nut.
The bonnet is located at backflow preventer the top.
The right side of the bonnet is provided with hexagonal socket nut and outer-hexagonal nut is fixed.
The lower section of the bonnet is provided with rubber blanket.
The advantages of the utility model and beneficial effect are：There is provided one kind can effectively avoid valve seat and O-ring fasten less than
Product caused by position or valve seat loosen sluices, and improves the perpendicularity of valve rod and sluicing flap, when avoiding forefront pressure fluctuation larger
Cause to sluice without reason the low resistance force counter flow stop of phenomenon.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, before creative labor is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is backflow preventer structure schematic diagram.
Description of reference numerals
1. before the main valve body 6. of 4. sluicing flap of drain connection 2. stator nut, 3. spacer 5. before non-return valve seat 7. only
Return after the valve rod 12. of 8. spring base of valve disc, 9. 10. first O-ring seal of spring 11. check valve disc after non-return valve seat 13.
14. the diaphragm of 15. 17. stud of the 3rd O-ring seal of auxiliary valve body 16., 18. hex nut of the second O-ring seal 19.
The outer-hexagonal spiral shell of 24. hexagonal socket nut of lower platen 20. diaphragm, 21. diaphragm top board, 22. hexagon thin nut, 23. bonnet 25.
The regulating bolt of 27. the 4th O-ring seal of piston 28. of female 26. rubber blanket 29.
Embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is further described.Implement below
Example is only used for clearly illustrating the technical solution of the utility model, and can not limit protection model of the present utility model with this
Enclose.
One kind exempts from drain valve seat low resistance force counter flow stop, as shown in figure 1, including drain connection 1, sluicing flap 4, main valve
Body 5, spring base 8, spring 9, the first O-ring seal 10, valve rod 11, the second O-ring seal 14, auxiliary valve body 15, the 3rd O-shaped sealing
Circle 16, diaphragm 20, bonnet 23, piston 27, the 4th O-ring seal 28, regulating bolt 29, drain connection 1 are located at backflow preventer
Bottom, sluicing flap 4 are located at the top of drain connection 1, and main valve body 5 is located at the left end of backflow preventer, sluicing flap 4 and master
Valve body 5 directly contacts sealing, and can effectively avoid valve seat from fastening sealing leak caused by not in place or valve seat loosens with O-ring causes
Product sluices always.The bottom of valve rod 11 is connected with sluicing flap 4, and the inside of main valve body 5 is provided with spring 9, and spring 9 is fixed on spring
On seat 8, for the first O-ring seal 10 on main valve body 5, the second O-ring seal 14 and the 3rd O-ring seal 16 are located at auxiliary valve body
On 15, auxiliary valve body 15 is located at the offside of main valve body 5, and diaphragm 20 is located at the top center position of valve rod 11, plays isolating seal, valve
The intermediate connections of lid 23 and valve rod 11 are provided with piston 27, and piston 27 pumps, and make here as fluctuation adjuster
With the perpendicularity of raising valve rod 11 and sluicing flap 4；Avoid causing the phenomenon to sluice without reason when forefront pressure fluctuation is larger.It is living
Sealed between plug 27 and bonnet 23 by the 4th O-ring seal 28, piston 27 is adjusted provided with regulating bolt 29.
The lower section of sluicing flap 4 is fixed provided with stator nut 2, and the outside of stator nut 2 is provided with spacer 3.
The right part of main valve body 5 includes preceding non-return valve seat 6 and preceding check valve disc 7, and preceding non-return valve seat 6 is located at preceding check-valves
The left side lower end of disk 7.
The left part of auxiliary valve body 15 includes rear non-return valve seat 12 and rear check valve disc 13, and rear non-return valve seat 12 is in rear non-return
The left side upper end of valve disc 13.
Auxiliary valve body 15 is provided with stud 17 and hex nut 18 is locked.
The upside of diaphragm 20 is provided with diaphragm top board 21, and the downside of the diaphragm 20 is provided with diaphragm lower platen 19.
Diaphragm 20 is locked on bonnet 23 by hexagon thin nut 22.
Bonnet 23 is located at backflow preventer the top.
The right side of bonnet 23 is provided with hexagonal socket nut 24 and outer-hexagonal nut 25 is fixed.
The lower section of bonnet 23 is provided with rubber blanket 26.
Sluicing flap 4 directly contacts sealing with valve body 5, it is not necessary to the flat seal of valve seat 6, effectively avoids sealing from letting out
Leakage causes product to sluice.The junction of bonnet 23 and valve rod 11 increase fluctuation adjuster, i.e. piston 27, piston 27 are up and down reciprocatingly transported
It is dynamic, controllability is added, and the perpendicularity of valve rod 11 and sluicing flap 4 is improved, avoid causing when forefront pressure fluctuation is larger
The phenomenon to sluice without reason.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc., the utility model should be included in
Protection domain within.
Claims (10)
1. one kind exempts from drain valve seat low resistance force counter flow stop, it is characterised in that including drain connection, sluicing flap, main valve body,
Spring base, spring, the first O-ring seal, valve rod, the second O-ring seal, auxiliary valve body, the 3rd O-ring seal, diaphragm, bonnet,
Piston, the 4th O-ring seal, regulating bolt, the drain connection are located at backflow preventer bottom, and the sluicing flap is located at
The top of drain connection, the main valve body are located at the left end of backflow preventer, and the sluicing flap directly contacts close with main valve body
Envelope, the stem bottom are connected with sluicing flap, are provided with spring inside the main valve body, the spring is fixed on spring base
On, for first O-ring seal on main valve body, second O-ring seal and the 3rd O-ring seal are located at auxiliary valve body
On, the auxiliary valve body is located at the offside of main valve body, and the diaphragm is located at valve rod top center position, plays isolating seal, institute
The intermediate connections for stating bonnet and valve rod are provided with piston, and the piston pumps, and make here as fluctuation adjuster
With being sealed between the piston and bonnet by the 4th O-ring seal, the piston is adjusted provided with regulating bolt
Section.
2. one kind according to claim 1 exempts from drain valve seat low resistance force counter flow stop, it is characterised in that the drain valve
It is fixed below valve provided with stator nut, the outside of the stator nut is provided with spacer.
3. one kind according to claim 1 exempts from drain valve seat low resistance force counter flow stop, it is characterised in that the main valve body
Right part include preceding non-return valve seat and preceding check valve disc, the left side lower end of check valve disc before the preceding non-return valve seat is located at.
4. one kind according to claim 1 exempts from drain valve seat low resistance force counter flow stop, it is characterised in that the auxiliary valve body
Left part include rear non-return valve seat and rear check valve disc, it is described after non-return valve seat in the left side upper end of rear check valve disc.
5. one kind according to claim 1 exempts from drain valve seat low resistance force counter flow stop, it is characterised in that the auxiliary valve body
It is provided with stud and hex nut is locked.
6. one kind according to claim 1 exempts from drain valve seat low resistance force counter flow stop, it is characterised in that the diaphragm
Upside is provided with diaphragm top board, and the downside of the diaphragm is provided with diaphragm lower platen.
7. one kind according to claim 1 exempts from drain valve seat low resistance force counter flow stop, it is characterised in that the diaphragm leads to
Hexagon thin nut is crossed to be locked on bonnet.
8. one kind according to claim 1 exempts from drain valve seat low resistance force counter flow stop, it is characterised in that the bonnet is set
In backflow preventer topmost.
9. one kind according to claim 1 exempts from drain valve seat low resistance force counter flow stop, it is characterised in that the bonnet
Right side is provided with hexagonal socket nut and outer-hexagonal nut is fixed.
10. one kind according to claim 1 exempts from drain valve seat low resistance force counter flow stop, it is characterised in that the bonnet
Lower section be provided with rubber blanket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720808710.6U CN207005370U (en) | 2017-07-05 | 2017-07-05 | One kind exempts from drain valve seat low resistance force counter flow stop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720808710.6U CN207005370U (en) | 2017-07-05 | 2017-07-05 | One kind exempts from drain valve seat low resistance force counter flow stop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207005370U true CN207005370U (en) | 2018-02-13 |
Family
ID=61452413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720808710.6U Active CN207005370U (en) | 2017-07-05 | 2017-07-05 | One kind exempts from drain valve seat low resistance force counter flow stop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207005370U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108591543A (en) * | 2018-07-13 | 2018-09-28 | 中阀控股（集团）有限公司 | A kind of low resistance force counter flow stop |
-
2017
- 2017-07-05 CN CN201720808710.6U patent/CN207005370U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108591543A (en) * | 2018-07-13 | 2018-09-28 | 中阀控股（集团）有限公司 | A kind of low resistance force counter flow stop |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200721 Address after: 201505 workshop 2, No. 5369 Nanting Road, Tinglin Town, Jinshan District, Shanghai Patentee after: Pulian power fluid control (Shanghai) Co., Ltd Address before: Suzhou City, Jiangsu province 215300 Kunshan city Yushan Town North Road No. 1111 room 2 Patentee before: SUZHOU PULIAN POWER INTELLIGENT FLUID CONTROL Co.,Ltd. |