CN207213256U - A kind of sluicing double containment type low resistance force counter flow stop - Google Patents
A kind of sluicing double containment type low resistance force counter flow stop Download PDFInfo
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- CN207213256U CN207213256U CN201720808709.3U CN201720808709U CN207213256U CN 207213256 U CN207213256 U CN 207213256U CN 201720808709 U CN201720808709 U CN 201720808709U CN 207213256 U CN207213256 U CN 207213256U
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- sluicing
- valve body
- low resistance
- resistance force
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Abstract
It the utility model is related to SMART FLUID manufacturing field of equipment, more particularly to a kind of sluicing double containment type low resistance force counter flow stop, including drain connection, backflow preventer main body, valve rod, diaphragm, bonnet, piston, regulating bolt, backflow preventer main body includes drain valve seat, sluicing flap, main valve body, auxiliary valve body, the second O-ring seal is additionally provided with main valve body, auxiliary valve body is provided with the 3rd O-ring seal and the 4th O-ring seal, valve rod is located between main valve body and auxiliary valve body, the intermediate connections of bonnet and valve rod are provided with piston, piston pumps, used here as fluctuation adjuster, sealed between piston and bonnet by the 5th O-ring seal, piston is adjusted provided with regulating bolt.The utility model can provide that a kind of sealing effectiveness is good, and the sluicing double containment type low resistance force counter flow stop of the phenomenon to sluice without reason is reduced when forefront pressure fluctuation is larger.
Description
Technical field
SMART FLUID manufacturing field of equipment is the utility model is related to, more particularly to a kind of sluicing double containment type low resistance force counter
Preventer.
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 a kind of sealing effectiveness of urgent need is good, the sluicing double density of the phenomenon to sluice without reason is reduced when forefront pressure fluctuation is larger
Envelope type low resistance force counter flow stop.
Utility model content
In view of problem above, the utility model provides that a kind of sealing effectiveness is good, and forefront pressure fluctuation is reduced when larger
The sluicing double containment type low resistance force counter flow stop of the phenomenon to sluice without reason.
In order to realize above-mentioned purpose of utility model, the utility model provides following technical scheme：It is a kind of in the utility model
Sluicing double containment type low resistance force counter flow stop, including drain connection, backflow preventer main body, valve rod, diaphragm, bonnet, piston,
Regulating bolt, the backflow preventer main body include drain valve seat, sluicing flap, main valve body, auxiliary valve body, the drain connection position
In the bottom of backflow preventer, for the drain valve seat above drain connection, the top of the drain valve seat is provided with stator spiral shell
Mother, the first O-ring seal is added between drain valve seat and the stator nut, spring, the bullet are provided with inside the main valve body
Spring is fixed on spring base, and the second O-ring seal is additionally provided with the main valve body, and the auxiliary valve body is provided with the 3rd O-shaped sealing
Circle and the 4th O-ring seal, the valve rod are located between main valve body and auxiliary valve body, and the auxiliary valve body is located at the offside of main valve body,
The intermediate connections of the bonnet and valve rod are provided with piston, and the piston pumps, here as fluctuation adjuster
Use, sealed between the piston and bonnet by the 5th O-ring seal, the piston is adjusted provided with regulating bolt
Section.
The auxiliary valve body and bonnet are attached fixation, the outer-hexagonal nut by hexagonal socket nut and outer-hexagonal nut
On be additionally provided with rubber blanket, to prevent nut loosening.The left part of the auxiliary valve body includes rear non-return valve seat and rear check valve disc,
Non-return valve seat is in the left side upper end of rear check valve disc after described.The auxiliary valve body is provided with stud and hex nut is locked
Fasten.
The periphery of the drain valve seat is provided with spacer, and the sluicing flap is located above drain valve seat.
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 diaphragm is located at valve rod top center position, plays isolating seal, and the upside of the diaphragm is provided with diaphragm
Pressing plate, the downside of the diaphragm are provided with diaphragm lower platen.The diaphragm top board tightens fixation using hexagon thin nut.
The right side of the bonnet is provided with hexagonal socket nut and outer-hexagonal nut is fixed.
The advantages of the utility model and beneficial effect are：It is good to provide a kind of sealing effectiveness, forefront pressure fluctuation is larger
When reduce the sluicing double containment type low resistance force counter flow stop of phenomenon to sluice without reason.Sluicing flap using valve body seal and
Valve seat double containment designs, and increases product sealing effectiveness；Bonnet and valve rod junction increase piston improve as fluctuation adjuster
The perpendicularity of valve rod and sluicing flap, again avoid causing the phenomenon to sluice without reason when forefront pressure fluctuation is larger.
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 sluicing double containment type low resistance force counter flow stop structural representation.
Description of reference numerals
1. the spacer of 2. 3. first O-ring seal of drain valve seat, 4. stator nut of drain connection 5.
6. the spring base of check valve disc 10. before non-return valve seat 9. before the main valve body 8. of sluicing flap 7.
11. check valve disc after non-return valve seat 15. after the valve rod 14. of 12. second O-ring seal of spring 13.
16. the stud of 17. the 4th O-ring seal of auxiliary valve body 18. of the 3rd O-ring seal 19.
20. the hexagon thin nut of 23. diaphragm top board of hex nut 21. diaphragm lower sheeting, 22. diaphragm 24.
25. the piston of 28. rubber blanket of bonnet 26. hexagonal socket nut, 27. outer-hexagonal nut 29.
30. the regulating bolt of the 5th O-ring seal 31.
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.
A kind of sluicing double containment type low resistance force counter flow stop, as shown in figure 1, including drain connection 1, backflow preventer master
Body, valve rod 13, diaphragm 22, bonnet 25, piston 29, regulating bolt 31, backflow preventer main body include drain valve seat 2, drain valve
Valve 6, main valve body 7, auxiliary valve body 17, drain connection 1 are located at the bottom of backflow preventer, and drain valve seat 2 is on drain connection 1
Side, the top of drain valve seat 2 are provided with stator nut 4, the first O-ring seal 3 are added between drain valve seat 2 and stator nut 4, main
The inside of valve body 7 is provided with spring 11, and spring 11 is fixed on spring base 10, and the second O-ring seal 12 is additionally provided with main valve body 7, secondary
Valve body 17 is provided with the 3rd O-ring seal 16 and the 4th O-ring seal 18, and valve rod 13 is located between main valve body 7 and auxiliary valve body 17.
Auxiliary valve body 17 is located at the offside of main valve body 7, and the intermediate connections of bonnet 25 and valve rod 13 are provided with piston 29, and piston 29 is up and down reciprocatingly
Motion, use here as fluctuation adjuster, sealed between piston 29 and bonnet 25 by the 5th O-ring seal 30,
Piston 29 is adjusted provided with regulating bolt 31.
Auxiliary valve body 17 and bonnet 25 are attached fixation, outer-hexagonal nut by hexagonal socket nut 26 and outer-hexagonal nut 27
Rubber blanket 28 is additionally provided with 27, to prevent nut loosening.The left part of auxiliary valve body 17 includes rear non-return valve seat 14 and rear non-return
Valve disc 15, rear non-return valve seat 14 is in the left side upper end of rear check valve disc 15.Auxiliary valve body 17 is provided with stud 19 and hexagonal spiral shell
Mother 20 is locked.
The periphery of drain valve seat 2 is provided with spacer 5, and sluicing flap 6 is located at the top of drain valve seat 2.
The right part of main valve body 7 includes preceding non-return valve seat 8 and preceding check valve disc 9, and preceding non-return valve seat 8 is located at preceding check-valves
The left side lower end of disk 9.
Diaphragm 22 is located at the top center position of valve rod 13, plays isolating seal, and the upside of diaphragm 22, which is provided with diaphragm, presses
Plate 23, the downside of diaphragm are provided with diaphragm lower platen 21.Diaphragm top board 23 tightens fixation using hexagon thin nut 24.
The right side of bonnet 25 is provided with hexagonal socket nut 26 and outer-hexagonal nut 27 is fixed.
Sluicing flap 6 increases product sealing effectiveness, in addition, valve using the sealing of valve itself and the design of valve seat double containment
Lid 25 and the junction of valve rod 13 increase piston 29 improve the perpendicularity of valve rod 13 and sluicing flap 6 as adjuster is fluctuated,
Avoid causing the phenomenon to sluice without reason when forefront pressure fluctuation is larger again.
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 (9)
1. a kind of sluicing double containment type low resistance force counter flow stop, it is characterised in that including drain connection, backflow preventer master
Body, valve rod, diaphragm, bonnet, piston, regulating bolt, the backflow preventer main body include drain valve seat, sluicing flap, main valve
Body, auxiliary valve body, the drain connection are located at the bottom of backflow preventer, and the drain valve seat is described above drain connection
The top of drain valve seat is provided with stator nut, and the first O-ring seal, the master are added between drain valve seat and the stator nut
Valve inner is provided with spring, and the spring is fixed on spring base, and the second O-ring seal is additionally provided with the main valve body, described
Auxiliary valve body is provided with the 3rd O-ring seal and the 4th O-ring seal, and the valve rod is located between main valve body and auxiliary valve body, described
Auxiliary valve body is located at the offside of main valve body, and the intermediate connections of the bonnet and valve rod are provided with piston, and the piston is up and down reciprocatingly transported
It is dynamic, use here as fluctuation adjuster, sealed between the piston and bonnet by the 5th O-ring seal, it is described
Piston is adjusted provided with regulating bolt.
A kind of 2. sluicing double containment type low resistance force counter flow stop according to claim 1, it is characterised in that the secondary valve
Body and bonnet are attached fixation by hexagonal socket nut and outer-hexagonal nut, and rubber blanket is additionally provided with the outer-hexagonal nut.
A kind of 3. sluicing double containment type low resistance force counter flow stop according to claim 1, it is characterised in that the sluicing
The periphery of valve seat is provided with spacer, and the sluicing flap is located above drain valve seat.
A kind of 4. sluicing double containment type low resistance force counter flow stop according to claim 1, it is characterised in that the main valve
The right part of body includes preceding non-return valve seat and preceding check valve disc, before the preceding non-return valve seat is located under the left side of check valve disc
End.
A kind of 5. sluicing double containment type low resistance force counter flow stop according to claim 1, it is characterised in that the secondary valve
The left part of body includes rear non-return valve seat and rear check valve disc, and the rear non-return valve seat is in the left side upper end of rear check valve disc.
A kind of 6. sluicing double containment type low resistance force counter flow stop according to claim 1, it is characterised in that the secondary valve
Body is provided with stud and hex nut is locked.
A kind of 7. sluicing double containment type low resistance force counter flow stop according to claim 1, it is characterised in that the diaphragm
Valve rod top center position is located at, plays isolating seal, the upside of the diaphragm is provided with diaphragm top board, under the diaphragm
Side is provided with diaphragm lower platen.
A kind of 8. sluicing double containment type low resistance force counter flow stop according to claim 1, it is characterised in that the diaphragm
Top board tightens fixation using hexagon thin nut.
A kind of 9. sluicing double containment type low resistance force counter flow stop according to claim 1, it is characterised in that the bonnet
Right side be provided with hexagonal socket nut and outer-hexagonal nut and be fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720808709.3U CN207213256U (en) | 2017-07-05 | 2017-07-05 | A kind of sluicing double containment type low resistance force counter flow stop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720808709.3U CN207213256U (en) | 2017-07-05 | 2017-07-05 | A kind of sluicing double containment type low resistance force counter flow stop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207213256U true CN207213256U (en) | 2018-04-10 |
Family
ID=61812410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720808709.3U Active CN207213256U (en) | 2017-07-05 | 2017-07-05 | A kind of sluicing double containment type low resistance force counter flow stop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207213256U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113063008A (en) * | 2021-03-30 | 2021-07-02 | 铜陵兴荣阀门管件有限公司 | Single-diaphragm low-resistance backflow preventer |
-
2017
- 2017-07-05 CN CN201720808709.3U patent/CN207213256U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113063008A (en) * | 2021-03-30 | 2021-07-02 | 铜陵兴荣阀门管件有限公司 | Single-diaphragm low-resistance backflow preventer |
| CN113063008B (en) * | 2021-03-30 | 2024-01-26 | 铜陵兴荣阀门管件有限公司 | Single-diaphragm low-resistance backflow preventer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200724 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. |
|
| TR01 | Transfer of patent right |