CN201288864Y - Welding stainless steel backflow preventer - Google Patents
Welding stainless steel backflow preventer Download PDFInfo
- Publication number
- CN201288864Y CN201288864Y CNU2008202074673U CN200820207467U CN201288864Y CN 201288864 Y CN201288864 Y CN 201288864Y CN U2008202074673 U CNU2008202074673 U CN U2008202074673U CN 200820207467 U CN200820207467 U CN 200820207467U CN 201288864 Y CN201288864 Y CN 201288864Y
- Authority
- CN
- China
- Prior art keywords
- water
- welded
- water outlet
- sluicing
- cylindrical shell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Check Valves (AREA)
Abstract
The utility model provides a welded stainless steel backflow preventer which consists of a water inlet, a water inlet check valve clack, cylindrical shell, a valve cover, a septum, a water outlet check valve clack, a water outlet, a water escape valve clack and a discharge opening. The water inlet and the water outlet are respectively welded on both sides of the cylindrical shell; the discharge opening is welded on an end cover on the bottom of the cylindrical shell; a water discharge guide lever is arranged inside of the cylindrical shell between the water inlet and the water outlet; a cylindrical shell flange is welded on the upside of the cylindrical shell; the cylindrical shell flange is connected with the valve cover via a bolt; the valve cover is communicated with the water outlet via a communicating tube; the septum is additionally arranged between the valve cover and the cylindrical shell flange. The utility model adopts the welded cylindrical shell structure, has simple processing, convenient assembly, light weight and good sanitary conditions, and the stainless steel materials are not easy to rust.
Description
1, technical field
The utility model relates to a kind of backflow preventer, especially a kind of welded stainless steel backflow preventer.
2, background technique
The backflow preventer of prior art mostly is the cast carbon steel valve body, and volume is big, Heavy Weight, and the assembling trouble, and be not easy to install, the carbon steel backflow preventer is installed on the Drinking Water pipeline simultaneously, and long-term the use gets rusty easily, and do not meet the hygienic requirements of Drinking Water.
3, model utility content
In view of the deficiency that above-mentioned prior art exists, the utility model provide a kind of easy to process, volume is little, in light weight, the reliable welded stainless steel backflow preventer of health.
The technological scheme that its technical problem that solves the utility model adopts is: the welded stainless steel backflow preventer is by water intake, water inlet non-return flap, cylindrical shell, valve gap, barrier film, go out the Water Check Valve lobe, water outlet, sluicing flap and discharge opening are formed, water intake and water outlet are welded on the both sides of cylindrical shell respectively, discharge opening is welded on the end socket of cylindrical shell bottom, wherein, water intake is welded with the water intake flange, and at water intake welding water inlet Boilor check valve seat, water inlet non-return flap is fixed on on the water Boilor check valve seat by water inlet safety check guide rod, dispose into water check-valve spring on the water inlet safety check guide rod, water inlet non-return flap can move axially along water intake under the effect of water inlet safety check guide rod and water inlet check-valve spring; Equally, water outlet is welded with water outlet flange and water outlet Boilor check valve seat, going out the Water Check Valve lobe is fixed on the water outlet Boilor check valve seat by going out the Water Check Valve guide rod, go out to dispose the water outlet check-valve spring on the Water Check Valve guide rod, go out the Water Check Valve lobe and under the effect that goes out Water Check Valve guide rod and water outlet check-valve spring, can move axially along water outlet; Inner barrel in the middle of water intake and water outlet is equiped with the sluicing guide rod, and be welded with shell flange on cylindrical shell top, shell flange is connected by bolt with valve gap, valve gap is communicated with water intake by cross over pipe, in the middle of valve gap and shell flange, be equipped with barrier film, and be fixed on the sluicing guide rod by barrier film die holder and barrier film punch holder, barrier film die holder and the preparation of sluicing spring, the sluicing spring is arranged on the sluicing spring seat, sluicing spring seat and sluicing spring and shell flange preparation, the barrier film punch holder, barrier film, the barrier film die holder, sluicing spring and sluicing spring seat are located at the upper end of sluicing guide rod from top to bottom successively, the lower end of sluicing guide rod is provided with the sluicing flap, sluicing flap and the drain valve seat sealing preparation that is welded on discharge opening, in discharge opening, also weld under the drain valve seat and be shaped on sluicing guide rod positioning plate, the weldering of discharge opening flange is built in the lower end of discharge opening.
The beneficial effects of the utility model are, adopt the welding type tube structure, and processing is simple, and easy to assembly, in light weight, stainless steel material is difficult for getting rusty, and sanitary condition is good.
4, description of drawings
Accompanying drawing 1 is a structural representation of the present utility model.
Among the figure, 1, water intake, 2, the water intake flange, 3, the water inlet Boilor check valve seat, 4, water inlet non-return flap, 5, water inlet safety check guide rod, 6, the water inlet check-valve spring, 7, cylindrical shell, 8, shell flange, 9, the sluicing spring seat, 10, bolt, 11, barrier film, 12, the sluicing spring, 13, the barrier film die holder, 14, the barrier film punch holder, 15, the sluicing guide rod, 16, cross over pipe, 17, valve gap, 18, go out the Water Check Valve guide rod, 19, the water outlet check-valve spring, 20, the water outlet Boilor check valve seat, 21, go out the Water Check Valve lobe, 22, water outlet, 23, the water outlet flange, 24, end socket, 25, the sluicing flap, 26, drain valve seat, 27, sluicing guide rod positioning plate, 28, discharge opening, 29, the discharge opening flange.
5, embodiment
Explain below doing with regard to 1 pair of welded stainless steel backflow preventer of the present utility model of accompanying drawing below.
As shown in Figure 1, welded stainless steel backflow preventer of the present utility model is by water intake (1), water inlet non-return flap (4), cylindrical shell (7), valve gap (17), barrier film (11), go out Water Check Valve lobe (21), water outlet (22), sluicing flap (25) and discharge opening (28) are formed, water intake (1) and water outlet (22) are welded on the both sides of cylindrical shell (7) respectively, discharge opening (28) is welded on the end socket (24) of cylindrical shell (7) bottom, wherein, water intake (1) is welded with water intake flange (2), and at water intake (1) welding water inlet Boilor check valve seat (3), water inlet non-return flap (4) is fixed on on the water Boilor check valve seat (3) by the safety check guide rod (5) of intaking, dispose into water check-valve spring (6) on the water inlet safety check guide rod (5), water inlet non-return flap (4) can move axially along water intake (1) under the effect of water inlet safety check guide rod (5) and water inlet check-valve spring (6); Equally, water outlet (22) is welded with water outlet flange (23) and water outlet Boilor check valve seat (20), going out Water Check Valve lobe (21) is fixed on the water outlet Boilor check valve seat (20) by going out Water Check Valve guide rod (18), go out to dispose water outlet check-valve spring (19) on the Water Check Valve guide rod (18), go out Water Check Valve lobe (21) and under the effect that goes out Water Check Valve guide rod (18) and water outlet check-valve spring (19), can move axially along water outlet (22); Cylindrical shell (7) inside in the middle of water intake (1) and water outlet (22) is equiped with sluicing guide rod (15), and be welded with shell flange (8) on cylindrical shell (7) top, shell flange (8) is connected by bolt (10) with valve gap (17), valve gap (17) is communicated with water intake (1) by cross over pipe (16), at the middle barrier film (11) that is equipped with of valve gap (17) and shell flange (8), and be fixed on the sluicing guide rod (15) by barrier film die holder (13) and barrier film punch holder (14), barrier film die holder (13) and sluicing spring (12) preparation, sluicing spring (12) is arranged on sluicing spring seat (9), sluicing spring seat (9) and sluicing spring (12) and shell flange (8) preparation, barrier film punch holder (14), barrier film (11), barrier film die holder (13), sluicing spring (12) and sluicing spring seat (9) are located at the upper end of sluicing guide rod (15) from top to bottom successively, the lower end of sluicing guide rod (15) is provided with sluicing flap (25), sluicing flap (25) and drain valve seat (26) the sealing preparation that is welded on discharge opening (28), in discharge opening (28), also weld under the drain valve seat (26) and be shaped on sluicing guide rod positioning plate (27), discharge opening flange (29) weldering is built in the lower end of discharge opening (28).
Institute it should be noted that, above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, the technical solution of the utility model is made amendment or is equal to replacement, and do not break away from the spirit and scope of technical solutions of the utility model, all should be encompassed in the middle of the claim scope of the present utility model.
Claims (4)
1, a kind of welded stainless steel backflow preventer is by water intake, water inlet non-return flap, cylindrical shell, valve gap, barrier film, go out the Water Check Valve lobe, water outlet, sluicing flap and discharge opening are formed, it is characterized in that: water intake and water outlet are welded on the both sides of cylindrical shell respectively, discharge opening is welded on the end socket of cylindrical shell bottom, water intake is welded with the water intake flange, and at water intake welding water inlet Boilor check valve seat, water inlet non-return flap is fixed on on the water Boilor check valve seat by water inlet safety check guide rod, dispose into water check-valve spring on the water inlet safety check guide rod, water inlet non-return flap can move axially along water intake under the effect of water inlet safety check guide rod and water inlet check-valve spring, inner barrel in the middle of water intake and water outlet is equiped with the sluicing guide rod, and be welded with shell flange on cylindrical shell top, shell flange is connected by bolt with valve gap, and valve gap is communicated with water intake by cross over pipe.
2, welded stainless steel backflow preventer according to claim 1, it is characterized in that: water outlet is welded with water outlet flange and water outlet Boilor check valve seat, going out the Water Check Valve lobe is fixed on the water outlet Boilor check valve seat by going out the Water Check Valve guide rod, go out to dispose the water outlet check-valve spring on the Water Check Valve guide rod, go out the Water Check Valve lobe and under the effect that goes out Water Check Valve guide rod and water outlet check-valve spring, can move axially along water outlet.
3, welded stainless steel backflow preventer according to claim 1 is characterized in that: be equipped with barrier film in the middle of valve gap and shell flange.
4, welded stainless steel backflow preventer according to claim 1, it is characterized in that: barrier film punch holder, barrier film, barrier film die holder, sluicing spring and sluicing spring seat are located at the upper end of sluicing guide rod from top to bottom successively, the lower end of sluicing guide rod is provided with the sluicing flap, sluicing flap and the drain valve seat sealing preparation that is welded on discharge opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202074673U CN201288864Y (en) | 2008-10-29 | 2008-10-29 | Welding stainless steel backflow preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202074673U CN201288864Y (en) | 2008-10-29 | 2008-10-29 | Welding stainless steel backflow preventer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201288864Y true CN201288864Y (en) | 2009-08-12 |
Family
ID=40980546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202074673U Expired - Fee Related CN201288864Y (en) | 2008-10-29 | 2008-10-29 | Welding stainless steel backflow preventer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201288864Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936412A (en) * | 2010-07-26 | 2011-01-05 | 杭州春江阀门有限公司 | Right-angle backflow preventer |
| CN101614292B (en) * | 2009-07-21 | 2011-05-18 | 武汉大禹阀门制造有限公司 | Backflow preventer |
| CN102261499A (en) * | 2011-05-17 | 2011-11-30 | 天津市国威给排水设备制造有限公司 | Double-diaphragm backflow preventer without external piping and capable of preventing abnormal water drainage of water draining opening |
| CN103470825A (en) * | 2013-08-28 | 2013-12-25 | 陈银周 | Novel low-resistance pressure-relief type backflow preventer |
| CN103511687A (en) * | 2013-09-17 | 2014-01-15 | 天津市倒流防止器制造有限公司 | Novel backflow prevention device structure |
-
2008
- 2008-10-29 CN CNU2008202074673U patent/CN201288864Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101614292B (en) * | 2009-07-21 | 2011-05-18 | 武汉大禹阀门制造有限公司 | Backflow preventer |
| CN101936412A (en) * | 2010-07-26 | 2011-01-05 | 杭州春江阀门有限公司 | Right-angle backflow preventer |
| CN101936412B (en) * | 2010-07-26 | 2012-10-10 | 杭州春江阀门有限公司 | Right-angle backflow preventer |
| CN102261499A (en) * | 2011-05-17 | 2011-11-30 | 天津市国威给排水设备制造有限公司 | Double-diaphragm backflow preventer without external piping and capable of preventing abnormal water drainage of water draining opening |
| CN103470825A (en) * | 2013-08-28 | 2013-12-25 | 陈银周 | Novel low-resistance pressure-relief type backflow preventer |
| CN103470825B (en) * | 2013-08-28 | 2016-01-20 | 陈银周 | Novel low-resistance pressure-relief type backflow preventer |
| CN103511687A (en) * | 2013-09-17 | 2014-01-15 | 天津市倒流防止器制造有限公司 | Novel backflow prevention device structure |
| CN103511687B (en) * | 2013-09-17 | 2017-01-04 | 天津市倒流防止器制造有限公司 | A kind of Novel backflow prevention device structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201288864Y (en) | Welding stainless steel backflow preventer | |
| CN201366279Y (en) | Straight-through pipeline filter | |
| CN101749461B (en) | Screw-thread backflow prevention device being free from being equipped with external conduit | |
| CN106495083B (en) | A kind of device for facilitating outwork personnel to drink bottled water | |
| CN201359121Y (en) | Solar water-feeding check valve | |
| CN103629070B (en) | Little, the multiduty high-pressure service pump of a kind of volume | |
| CN202418791U (en) | Quick energy-saving vent valve | |
| CN102486237A (en) | Backflow preventer with built-in filter screen and no external piping | |
| CN202252594U (en) | Sanitary bottom valve on raw material suction station | |
| CN201651748U (en) | Full automatic gas pressurization floater drain valve | |
| CN109027341A (en) | One-way flow check-valves capable of reversing | |
| CN201428924Y (en) | Natural gas drain valve | |
| CN2877281Y (en) | Water drinking device for livestock | |
| CN209679578U (en) | A kind of water purifier aluminium shell filter core | |
| CN204126991U (en) | Motor tricycle hydraulic oil container | |
| CN208804291U (en) | One-way flow check-valves capable of reversing | |
| CN209005548U (en) | Chlorine tail gas recycle absorption plant | |
| CN202132558U (en) | Built-in filter screen and backflow preventer without built-out piping | |
| CN2520442Y (en) | Single-flow check valve with double-layer valve core | |
| CN202144778U (en) | Plunger piston diaphragm pump | |
| CN212454723U (en) | Hydraulic plunger pump for conveying thick slurry | |
| CN206738643U (en) | A kind of ramp type screw down nonreturn valve | |
| CN211599642U (en) | Hydraulic pump is with preventing fracture formula check valve convenient to installation | |
| CN201368327Y (en) | Super-displacement lever ball-float type steam trap | |
| CN201391439Y (en) | Manual vacuum water suction pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090812 Termination date: 20111029 |