CN201180297Y - Backpressure valve for preventing sewage water return - Google Patents
Backpressure valve for preventing sewage water return Download PDFInfo
- Publication number
- CN201180297Y CN201180297Y CNU2008200550675U CN200820055067U CN201180297Y CN 201180297 Y CN201180297 Y CN 201180297Y CN U2008200550675 U CNU2008200550675 U CN U2008200550675U CN 200820055067 U CN200820055067 U CN 200820055067U CN 201180297 Y CN201180297 Y CN 201180297Y
- Authority
- CN
- China
- Prior art keywords
- valve
- spool
- valve body
- joint
- valve core
- 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 - Lifetime
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Abstract
The utility model relates to the technical field of valve, in particular to a check valve capable of preventing sewage from flowing back. The check valve comprises a valve body, a joint and a valve core. One end of the joint is connected with the valve body, and the other end of the joint is connected with a water pipe; a support frame is arranged in and fixed with the valve body; a guide pole is fixed on the support frame; the valve core is arranged on the guide pole. The check valve is characterized in that the valve core is a hollow pipe with an opened lower end and a closed upper end, and a cutoff component is arranged on the valve core. The utility model has the advantages that the check valve is simple in structure and convenient to install, utilizes the buoyancy of the valve core to allow a tapered part of the valve core reach cutoff surface ahead of water surface, and has good check effect.
Description
[technical field]
The utility model relates to valve technology field, relates in particular to a kind of flap valve that can prevent sewage backflow.
[background technology]
Flap valve is a kind of valve that medium can only be passed through from a side direction, has strict directionality, and main effect is to prevent that the medium in the pipeline from flowing backwards.The blowdown drainage system of some multilayers, little high level, highrise building all adopts sewage to connect sewer pipe by pond or floor drain and is discharged to city master's blowdown main at present.In use, because various effluent stream are crossed drainage pipe, some dirts are accumulated in bend, junction easily, cause line clogging, thereby cause backing up of sewage, vast and indoor floor, furniture etc.In some drainage and exhaust systems, use flap valve at present, prevent backing up of sewage.This flap valve is made up of valve body and spool, and its spool is floatable spherical object.But this flap valve requires not have particle, no strip impurity in the medium, in order to avoid impurity blocks stop surface during medium back flow, causes to be not closed completely the medium refluence.
[summary of the invention]
The purpose of this utility model is to provide a kind of simple in structure, flap valve that prevents sewage backflow that non-return is effective.
The technical solution of the utility model: a kind of flap valve that prevents sewage backflow, comprise valve body, joint and spool, one end of joint is connected on the valve body, the other end connects water pipe, be provided with bracing frame in the valve body and fixedly connected, be fixed with lead on the bracing frame, be mounted with spool on the lead with valve body, spool is the hollow tube of lower ending opening, upper end closed, and spool is provided with cut-off parts.
Described cut-off parts is the cone that a bottom surface is slightly larger than the water pipe internal diameter; Post pad on the cut-off parts, post the guiding compressing tablet on the another side of pad.
The beneficial effects of the utility model, simple in structure, easy for installation, utilize the buoyancy of spool to make the tapered portion of spool arrive stop surface prior to the water surface, non-return is effective.
[description of drawings]
Fig. 1 is an overall schematic of the present utility model;
Fig. 2 is an A-A sectional view among Fig. 1.
[specific embodiment]
Below in conjunction with the drawings and specific embodiments the utility model is described in detail:
The present embodiment flap valve, comprise valve body 5, joint 1,8 and spool 4, joint 1,8 is respectively by being threaded in the two ends of valve body 5, the other end water receiving pipe of joint, be provided with bracing frame 6 in the valve body 5 and fixedly connected, be fixed with lead 7 on the bracing frame 6, be mounted with spool 4 on the lead 7 with valve body 5, spool 4 is hollow tubes of a lower ending opening, upper end closed, and spool 4 is provided with the cone 9 that a bottom surface is slightly larger than the water pipe internal diameter.Post pad 3 on the cone 9, post guiding compressing tablet 2 on the another side of pad 3.Do not send noise in the time of just can not bumping against because of spool and valve body during closure of check ring like this, and utilize self-closing phenomenon to make the tightr of flap valve closure, sewage is difficult for flowing backwards.The spool 4 of present embodiment flap valve adopts hollow tube to make, when sewage flows backwards, utilize water the buoyancy of spool 4 to be made the tapered portion 9 of spool 4 arrive stop surface, make the stop surface sealing better with having the pad 3 that ductile material makes, thereby reach the purpose of non-return prior to the water surface.
Claims (3)
1, a kind of flap valve that prevents sewage backflow, comprise valve body, joint and spool, one end of joint is connected on the valve body, the other end connects water pipe, be provided with bracing frame in the valve body and fixedly connected, be fixed with lead on the bracing frame, be mounted with spool on the lead with valve body, it is characterized in that spool is the hollow tube of lower ending opening, upper end closed, spool is provided with cut-off parts.
2, a kind of flap valve that prevents sewage backflow according to claim 1 is characterized in that described cut-off parts is the cone that a bottom surface is slightly larger than the water pipe internal diameter.
3, a kind of flap valve that prevents sewage backflow according to claim 2 is characterized in that posting on the cut-off parts pad, posts the guiding compressing tablet on the another side of pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200550675U CN201180297Y (en) | 2008-01-25 | 2008-01-25 | Backpressure valve for preventing sewage water return |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200550675U CN201180297Y (en) | 2008-01-25 | 2008-01-25 | Backpressure valve for preventing sewage water return |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201180297Y true CN201180297Y (en) | 2009-01-14 |
Family
ID=40249797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200550675U Expired - Lifetime CN201180297Y (en) | 2008-01-25 | 2008-01-25 | Backpressure valve for preventing sewage water return |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201180297Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110117977A (en) * | 2018-02-06 | 2019-08-13 | 上海岭帜电器科技有限公司 | A kind of method preventing sewage outflow and its single slope drainage valve |
-
2008
- 2008-01-25 CN CNU2008200550675U patent/CN201180297Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110117977A (en) * | 2018-02-06 | 2019-08-13 | 上海岭帜电器科技有限公司 | A kind of method preventing sewage outflow and its single slope drainage valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |