CN202091580U - Return water control valve - Google Patents
Return water control valve Download PDFInfo
- Publication number
- CN202091580U CN202091580U CN2011201634294U CN201120163429U CN202091580U CN 202091580 U CN202091580 U CN 202091580U CN 2011201634294 U CN2011201634294 U CN 2011201634294U CN 201120163429 U CN201120163429 U CN 201120163429U CN 202091580 U CN202091580 U CN 202091580U
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- valve
- valve body
- gland
- piston
- inner valve
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- Expired - Fee Related
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Abstract
The utility model discloses a return water control valve, which belongs to the technical field of plumbing parts. A valve body is cylindrical, both sides of the valve body are respectively provided with a water inlet tube and a water outlet tube, the water outlet tube is connected with an inner valve body, a drain valve is arranged on the bottom of the valve body, an upper valve cover is arranged on the top of the valve body, a pressure water inlet tube is arranged on the top of the upper valve cover, the upper valve cover is fixed on a valve cover by bolts, the cylindrical inner valve body is arranged on the bottom of the valve cover, the valve cover is provided with a hole, a valve rod arranged in the hole passes through the inner valve body and gets to the bottom of a valve clack, a spacing ring is arranged in the inner valve body, a screen plate is arranged on the lower end of the inner valve body, a piston is respectively arranged from the top down in the inner valve body, the lower end of the piston is provided with a clamped pad, which is clamped on the valve rod, a spring is arranged under the piston, a bowl-shaped part with a relief port is arranged on the lower end of the spring, a first annular sleeve is arranged upon the edge of the upper end of the bowl-shaped part, a gland is arranged on the lower end, a water outlet is arranged upon the gland, the gland is hollow and round, and presses the spacing ring, and a rubber washer and a valve clack are respectively arranged on the bottom of the gland, and are firmly connected with the valve rod.
Description
Technical field
The utility model relates to a kind of backwater control valve, belongs to hot-water heating part technical field.
Background technique
At present, the existing back-water valve (BWV) that uses only plays the effect of the flow direction of unidirectional control water, and the impurity in system and the boiler is with water running, obstruction, contaminated system and boiler, and system and boiler operatiopn need be cleared up to certain hour, otherwise lose heat.
Summary of the invention
In order to overcome above-mentioned deficiency, the utility model provides a kind of backwater control valve, and this backwater control valve can effectively be separated system water and boiler water, but and impurity screening.
The technological scheme that its technical problem that solves the utility model adopts is: the backwater control valve is by valve body, inner valve body, system's intake pipe, the pressure intake pipe, valve rod, blowdown valve, flap, the filtration sieve plate is formed, valve body is a cylindrical shape, the one side is provided with system's intake pipe, opposite side is provided with system's outlet pipe, system's outlet pipe connects inner valve body, valve body lower end is provided with blowdown valve, the valve body top is provided with valve upper cover, the valve upper cover top is provided with the pressure intake pipe, valve upper cover is by being bolted on the valve gap, the valve gap lower end is provided with the cylindrical shape inner valve body, valve gap is provided with and is provided with valve rod in the hole, hole and runs through inner valve body to the flap lower end, be provided with limited ring in the inner valve body, the lower end is provided with the filtration sieve plate, be respectively equipped with piston in the inner valve body from top to bottom, piston is provided with O type rubber ring one, the piston lower end is provided with the card pad, and the card pad is stuck on the valve rod, and piston has spring, the spring lower end is provided with the bowl type spare of band relief hole, bowl type spare upper end-face edge top is equipped with the annular cover, and the below is equipped with gland, and the gland top is provided with water outlet, gland is a hollow circular, the gland lower end is provided with O type rubber ring two, and gland is pressed on the limited ring, and the gland lower end is respectively equipped with rubber washer, flap is fixedly connected on the valve rod.
The beneficial effects of the utility model are: can carry out heat supply according to using needs to determine whether to open back-water valve (BWV), guarantee that effectively the water in the heating system does not reflux, not lose heat; Filter sieve plate can be effectively with foreign material in the intrasystem water as: sand, waste plastics, sawdust filter in valve body, are got rid of the pollution that mitigation system and boiler are interior by blowdown valve; Usability is good, and installation, maintenance is easy, the open and close sensitivity.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the utility model backwater control valve structural drawing.
Among the figure 1, system's intake pipe, 2, the valve gap body, 3, valve upper cover, 4, the pressure intake pipe, 5, valve rod, 6, system's outlet pipe, 7, O type rubber ring one, 8, annular cover, 9, bowl type spare, 10, O type rubber ring two, 11, rubber washer, 12, blowdown valve, 13, piston, 14, spring, 15, limited ring, 16, gland, 17, flap, 18, filter sieve plate, 19, valve body, 20, inner valve body, 21, water outlet.
Embodiment
As shown in Figure 1, valve body 19 is a cylindrical shape, the one side is provided with system's intake pipe 1, opposite side is provided with system's outlet pipe 6, system's outlet pipe 6 connects inner valve body 20, valve body 19 lower ends are provided with blowdown valve 12, valve body 19 tops are provided with valve upper cover 3, valve upper cover 3 tops are provided with pressure intake pipe 4, valve upper cover 3 is by being bolted on the valve gap 2, valve gap 2 lower ends are provided with cylindrical shape inner valve body 20, valve gap 2 is provided with and is provided with valve rod 5 in the hole, hole and runs through inner valve body 20 to flap 17 lower ends, be provided with limited ring 15 in the inner valve body 20, the lower end is provided with filters sieve plate 18, be respectively equipped with piston 13 in the inner valve body 20 from top to bottom, piston 13 is provided with O type rubber ring 1, piston 13 lower ends are provided with the card pad, and the card pad is stuck on the valve rod 5, and piston 13 has spring 14, spring 14 lower ends are provided with the bowl type spare 9 of band relief hole, bowl type spare upper end-face edge top is equipped with annular cover 1, and the below is equipped with gland 16, and gland 16 tops are provided with water outlet 21, gland 16 is a hollow circular, gland 16 lower ends are provided with O type rubber ring 2 10, and gland 16 is pressed on the limited ring 15, and gland 16 lower ends are respectively equipped with rubber washer 11, flap 17 is fixedly connected on the valve rod 5.
Its working procedure is: high pressure water is entered by pressure intake pipe 4 and depresses valve rod 5 in the valve upper cover 3, valve rod 5 descending relief holes by bowl type spare 9 are let out except that pressure, rubber washer 11, flap 17 that valve rod 5 connects move down thereupon, produce the gap between rubber washer 11 and the gland 16, at this moment, water in the heating system is entered in the valve body 19 by system's intake pipe 1, filtration sieve plate 18 by inner valve body 20 bottoms enters inner valve body 20, and the water outlet 21 that flows through on the gland 16 by the gap that produces between rubber washer 11 and the gland 16 flows into boiler by system's outlet pipe 6; When stopping, the high pressure water in the pressure intake pipe 4 stops to supply water, and valve rod 5 is return under the effect of spring 14, and rubber washer 11, flap 17 reset thereupon and close gap with gland 16, by flowing of water.
Claims (1)
1. backwater control valve, by valve body, inner valve body, system's intake pipe, the pressure intake pipe, valve rod, blowdown valve, flap, the filtration sieve plate is formed, it is characterized in that: valve body (19) is cylindrical shape, the one side is provided with system's intake pipe (1), opposite side is provided with system's outlet pipe (6), system's outlet pipe (6) connects inner valve body (20), valve body (19) lower end is provided with blowdown valve (12), valve body (19) top is provided with valve upper cover (3), valve upper cover (3) top is provided with pressure intake pipe (4), valve upper cover (3) is by being bolted on the valve gap (2), valve gap (2) lower end is provided with cylindrical shape inner valve body (20), valve gap (2) is provided with and is provided with valve rod (5) in the hole, hole and runs through inner valve body (20) to flap (17) lower end, be provided with limited ring (15) in the inner valve body (20), the lower end is provided with filters sieve plate (18), be respectively equipped with piston (13) in the inner valve body (20) from top to bottom, piston (13) is provided with O type rubber ring one (7), piston (13) lower end is provided with the card pad, the card pad is stuck on the valve rod (5), piston (13) has spring (14), spring (14) lower end is provided with the bowl type spare (9) of band relief hole, bowl type spare upper end-face edge top is equipped with annular cover one (8), the below is equipped with gland (16), gland (16) top is provided with water outlet (21), gland (16) is a hollow circular, gland (16) lower end is provided with O type rubber ring two (10), gland (16) is pressed on the limited ring (15), and gland (16) lower end is respectively equipped with rubber washer (11), flap (17) is fixedly connected on the valve rod (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201634294U CN202091580U (en) | 2011-05-20 | 2011-05-20 | Return water control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201634294U CN202091580U (en) | 2011-05-20 | 2011-05-20 | Return water control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202091580U true CN202091580U (en) | 2011-12-28 |
Family
ID=45366648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201634294U Expired - Fee Related CN202091580U (en) | 2011-05-20 | 2011-05-20 | Return water control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202091580U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110595076A (en) * | 2019-10-22 | 2019-12-20 | 广东瑞发水箱制品有限公司 | Full-automatic pressure-bearing non-pressure operation system of water storage type water heater |
-
2011
- 2011-05-20 CN CN2011201634294U patent/CN202091580U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110595076A (en) * | 2019-10-22 | 2019-12-20 | 广东瑞发水箱制品有限公司 | Full-automatic pressure-bearing non-pressure operation system of water storage type water heater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111228 Termination date: 20160520 |