CN204387436U - Antifreezing check valve - Google Patents
Antifreezing check valve Download PDFInfo
- Publication number
- CN204387436U CN204387436U CN201520002273.XU CN201520002273U CN204387436U CN 204387436 U CN204387436 U CN 204387436U CN 201520002273 U CN201520002273 U CN 201520002273U CN 204387436 U CN204387436 U CN 204387436U
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- CN
- China
- Prior art keywords
- drain opening
- flap
- valve
- waste pipe
- safety check
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- 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.)
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- Safety Valves (AREA)
Abstract
The utility model discloses a kind of antifreezing check valve, relate to Fluid valve technical field, comprise valve body and internal flap thereof, described valve body is provided with material feeding mouth and discharge port, the cavity lowest part formed at material feeding mouth and flap is provided with drain opening and leaves a small―gap suture between drain opening and flap, described drain opening place is provided with waste pipe, and described waste pipe is provided with valve.By the cavity lowest part formed at valve body material feeding mouth and flap, a drain opening is set, drain opening place installs a valvular waste pipe of band, just can by outside the hydrops exits valve body in safety check cavity, safety check can be avoided to endure cold because of low temperature, cause the freezing or non-serviceable situation of safety check to occur.The utility model has the advantage that structure is simple, antifreezing effect is good, can emptying safety check cavity inner product liquid, prevents safety check from freezing to use and affects and produce normal operation.
Description
Technical field
The utility model relates to Fluid valve technical field.
Background technique
Safety check is the valve controlling pipeline internal medium single flow direction, is generally arranged on as required on vertical pipe or horizontal pipe, and under the fluid pressure action of a direction flowing, flap is opened; When fluid flows in the other direction, act on valve seat by the deadweight of hydrodynamic pressure and flap and flap, thus cut off flowing, be used for preventing the medium in pipeline from flowing backwards.Safety check belongs to a kind of automatic valve, and its effect is the function ensureing medium directional flow in pipeline and unlikely refluence, to try to avert accidents.
On existing pipeline, safety check used has cast iron and cast steel two kinds of materials, and in the safety check of cast iron quality, flap is hinge, and in the safety check of cast steel, flap is spring, and these two kinds of safety check all can be applicable on vertical pipe or horizontal pipe.The safety check used on the pipeline of interruption conveying liquid for those, when medium stops flowing, if be applied in the northern area problem that just existence one is antifreeze.Usual way installs a Draw off valve on the pipeline of safety check front end, but still can put unclean for some hydrops in the cavity flap side of safety check, can, once occur that safety check freezes, not being that safety check is freezing, can not using exactly because freezing.
Model utility content
Technical problem to be solved in the utility model be to provide a kind of structure simple, can the antifreezing check valve of the inner hydrops of emptying safety check, antifreezing effect is good.
For solving the problems of the technologies described above, technical solution adopted in the utility model is:
A kind of antifreezing check valve, comprise valve body and internal flap thereof, described valve body is provided with material feeding mouth and discharge port, the cavity lowest part formed at material feeding mouth and flap is provided with drain opening and leaves a small―gap suture between drain opening and flap, described drain opening place is provided with waste pipe, and described waste pipe is provided with valve.
Preferably, described drain opening and waste pipe screw-thread fit, and sealing strip is provided with between drain opening and waste pipe, the valve on described waste pipe is ball valve, and described ball valve and waste pipe joint are also provided with sealing strip.
Preferably, described drain opening distance flap distance is 1 ~ 2mm, and described drain opening diameter is 15mm, and the specification of described ball valve is DN15.
The beneficial effect adopting technique scheme to produce is: arrange a drain opening by the cavity lowest part formed at valve body material feeding mouth and flap, drain opening place installs a valvular waste pipe of band, just can by outside the hydrops exits valve body in safety check cavity, safety check can be avoided to endure cold because of low temperature, cause the freezing or non-serviceable situation of safety check to occur.The utility model has the advantage that structure is simple, antifreezing effect is good, can emptying safety check cavity inner product liquid, prevents from it from freezing causing safety check not use and affects and produce normal operation.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment 1;
Fig. 2 is the sectional drawing of valve body in Fig. 1;
Fig. 3 is the structural representation of embodiment 2;
Fig. 4 is the sectional drawing of valve body in Fig. 3;
In figure: 1-valve body, 2-flap, 3-material feeding mouth, 4-discharge port, 5-drain opening, 6-waste pipe, 7-valve.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
A kind of antifreezing check valve, comprise valve body 1 and internal flap 2 thereof, described valve body 1 is provided with material feeding mouth 3 and discharge port 4, the cavity lowest part formed at material feeding mouth 3 and flap 2 is provided with drain opening 5 and leaves a small―gap suture between drain opening 5 and flap 2, described drain opening place 5 is provided with waste pipe 6, described waste pipe 6 is provided with valve 7, and the small―gap suture between drain opening 5 and flap 2 can be avoided waste pipe 6 to enter drain opening 5 crossing dark and affect flap 2 action or accidentally injure flap 2 sealing surface because processing drain opening 5 and affect safety check working effect; Described drain opening 5 and waste pipe 6 screw-thread fit, and sealing strip is provided with between drain opening 5 and waste pipe 6, valve 7 on described waste pipe 6 is ball valve, and described ball valve and waste pipe 6 joint are also provided with sealing strip, and sealing strip can ensure that the connection sealing of drain opening 5, ball valve and waste pipe 6 is good; Described drain opening 5 is 1 ~ 2mm apart from flap 2 distance, and described drain opening 5 diameter is 15mm, and the specification of described ball valve is DN15.
Embodiment 1: for the antifreezing check valve of cast iron quality as shown in Figure 1, 2, when it is arranged on horizontal pipe, processes a drain opening 5 at material feeding mouth 3 side valve body 1 lowest part, next-door neighbour's flap 2 apart from 1 ~ 2mm place electric drill; When safety check is arranged on vertical pipeline, in the top of flap 2 distance flap 2 about 1 ~ 2mm place processing drain opening 5; Then machining internal thread in drain opening 5, is wrapped with sealing strip and drain opening 5 screw-thread fit by a waste pipe 6 with ball valve, also can be directly screwed in drain opening 5 by ball valve.
Embodiment 2: for the antifreezing check valve of cast steel as shown in Figure 3,4, when it is arranged on horizontal pipe, process the drain opening 5 that diameter is 15mm at material feeding mouth 3 side valve body 1 lowest part, next-door neighbour's flap 2 apart from 1 ~ 2mm place gas cutting; When safety check is arranged on vertical pipeline, in the top of flap 2 distance flap 2 about 1 ~ 2mm place processing drain opening 5; Then weld in drain opening 5 specification be the monofilament head of DN15 as waste pipe 6, then the ball valve being wound around sealing strip and DN15 on monofilament head screws.
In sum, the utility model has the advantage that structure is simple, antifreezing effect is good, by the cavity lowest part formed at valve body 1 material feeding mouth 3 and flap 2, a drain opening 5 is set, a waste pipe 6 with valve 7 is installed at drain opening 5 place, just can by outside the hydrops exits valve body 1 in safety check cavity, safety check can be avoided to endure cold because of low temperature, cause the freezing or non-serviceable situation of safety check to occur, ensure to produce and carry out smoothly.
Claims (3)
1. an antifreezing check valve, comprise valve body (1) and internal flap (2) thereof, described valve body (1) is provided with material feeding mouth (3) and discharge port (4), it is characterized in that: the cavity lowest part formed at material feeding mouth (3) and flap (2) is provided with drain opening (5) and leaves a small―gap suture between drain opening (5) and flap (2), described drain opening place (5) is provided with waste pipe (6), and described waste pipe (6) is provided with valve (7).
2. antifreezing check valve according to claim 1, it is characterized in that: described drain opening (5) and waste pipe (6) screw-thread fit, and sealing strip is provided with between drain opening (5) and waste pipe (6), valve (7) on described waste pipe (6) is ball valve, and described ball valve and waste pipe (6) joint are also provided with sealing strip.
3. antifreezing check valve according to claim 2, is characterized in that: described drain opening (5) distance flap (2) distance is 1 ~ 2mm, and described drain opening (5) diameter is 15mm, and the specification of described ball valve is DN15.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520002273.XU CN204387436U (en) | 2015-01-05 | 2015-01-05 | Antifreezing check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520002273.XU CN204387436U (en) | 2015-01-05 | 2015-01-05 | Antifreezing check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204387436U true CN204387436U (en) | 2015-06-10 |
Family
ID=53360158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520002273.XU Active CN204387436U (en) | 2015-01-05 | 2015-01-05 | Antifreezing check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204387436U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108286619A (en) * | 2017-01-09 | 2018-07-17 | 朱凤梧 | A kind of check-valves automatic anti-freezing device |
-
2015
- 2015-01-05 CN CN201520002273.XU patent/CN204387436U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108286619A (en) * | 2017-01-09 | 2018-07-17 | 朱凤梧 | A kind of check-valves automatic anti-freezing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |