CN201615258U - Swing check valve - Google Patents
Swing check valve Download PDFInfo
- Publication number
- CN201615258U CN201615258U CN2010201505208U CN201020150520U CN201615258U CN 201615258 U CN201615258 U CN 201615258U CN 2010201505208 U CN2010201505208 U CN 2010201505208U CN 201020150520 U CN201020150520 U CN 201020150520U CN 201615258 U CN201615258 U CN 201615258U
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- CN
- China
- Prior art keywords
- valve
- pendant
- screw
- swing check
- hanging
- 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
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- Check Valves (AREA)
Abstract
The utility model discloses a swing check valve, which comprises a valve body, a valve cap, a valve clack, a rocking lever and a pendant, wherein a sealing valve seat is arranged on the valve body; the valve clack and the sealing valve seat are arranged and fixed at the lower end of the rocking lever in a correspondingly matching way; the upper end of the rocking lever is rotationally mounted at the lower part of the pendant; a pendant fixing plate is arranged on the valve body, the pendant is fixedly mounted on the pendant fixing plate through a pendant screw, and the head of the pendant screw faces the inner wall of the valve cap; a bulge fixing block corresponding to the head end of the pendant screw is fixedly arranged on the inner wall of the valve cap; and the lower end surface of the bulge fixing block and the head end of the pendant screw are in clearance right-facing fit. The swing check valve has the advantages that the water hammer effect can be resisted to prevent the screw fixing the pendant from falling off, so as to enhance the operational safety and stability of the valve.
Description
Technical field
The utility model relates to a kind of valve, specifically is meant to be used for the Swing check valve that pipeline prevents the medium effluent.
Background technique
Swing check valve claims one-way valve or check valve again, belongs to the category of safety check, and Swing check valve is used for pipe-line system, and the power of the mobile generation of tube road medium itself realizes opening and closing automatically, and belongs to a kind of automatic valve.Present known Swing check valve is mainly by valve body, valve gap, flap, rocking bar with hang and form, and wherein hangs generally by screw in valve body, is used to being rotationally connected of rocking bar to provide to rotate fulcrum is installed.When its working principle was following current, fluid entered valve from the import of Swing check valve, fluid be subjected to the bottom flap stop that flow rate of fluid reduces, the part dynamic pressure changes into hydrostatic pressure on flap, and flap rotation is upwardly opened; During adverse current, fluid passes back into valve from the outlet of Swing check valve, and the hydrostatic pressure of fluid closes the flap bottom on the flap of opening, and flap stops fluid reflux.
But because the moment that Swing check valve is opening and closing, because medium is a directional flow, open and close along with flap, medium reduces to zero from the refluence speed of maximum, and pressure raises rapidly, generation may have " water hammer " phenomenon of destruction to pipe-line system, often make rocking bar, hang and bear incessantly pressure, make that being used for fixing the screw loosening of hanging comes off and can't play fixation and cause the accident.
The model utility content
The purpose of this utility model is in order to overcome the shortcoming and defect that prior art exists, and a kind of toner screw that can resist " water hammer " and prevent from fixedly to hang is provided, thereby improves valve working Security and stable Swing check valve.
For achieving the above object, the technical solution of the utility model is a Swing check valve, include valve body, valve gap, flap, rocking bar and hanging, described valve body is provided with seal valve seat, described flap and the setting of seal valve seat corresponding matching and be fixed in the lower end of rocking bar, the upper end of described rocking bar is rotated and is installed on the below of hanging, described valve body is provided with hangs fixed plate, described hanging by hanging screw is installed on and hangs on the fixed plate, and hang the inwall of the head of screw over against valve gap, be set with protruding fixed block corresponding to the top position of hanging screw on the inwall of described valve gap, and lower end surface that should the projection fixed block with hang the screw head end and constitute the gap over against cooperating.By this setting, the valve gap the inside is corresponding to the protruding positioning block of setting up of the top of hanging screw, therefore no matter the valve opening and closing instantaneous pressure is much, the top of hanging screw is subjected to spacing, can't come off, all the time play fixation, when guaranteeing the Swing check valve applicable performance, surge pressure that will " water hammer " reduces to minimum.
Further being provided with is described protruding fixed block and valve gap integrally casting moulding setting.The manufacturing of valve gap and protruding fixed block is convenient in this setting, and the adhesive strength height
Further be provided with is that described rocking bar is hung by rotatable being installed on of lateral pin.
Below in conjunction with specification drawings and specific embodiments the utility model is done further introduction.
Description of drawings
Fig. 1 the utility model embodiment structural representation.
Embodiment
Embodiment of the present utility model as shown in Figure 1, include valve body 1, valve gap 2, flap 3, rocking bar 4 and hang 5, described valve body 1 is provided with seal valve seat 11, described flap 3 and seal valve seat 11 corresponding matching settings and be fixed in the lower end of rocking bar 4, the upper end of described rocking bar 4 is rotated to be installed on and is hung 5 below, described valve body 1 is provided with hangs fixed plate 12, describedly hang 5 and be fixedly installed in and hang on the fixed plate 12 by hanging screw 51, and hang the inwall of the head of screw 51 over against valve gap 2, be set with protruding fixed block 21 corresponding to the top position of hanging screw 51 on the inwall of described valve gap 2, and lower end surface that should projection fixed block 21 with hang screw 51 head ends and constitute the gap over against cooperating, the utility model is when implementing, described protruding fixed block 21 is provided with valve gap 2 integrally casting moulding, be convenient to the manufacturing of valve gap 2 and protruding fixed block 21, and the two adhesive strength height, in addition, described rocking bar 4 is hung on 5 by lateral pin 41 rotatable being installed on.The utility model, valve gap 2 the insides are corresponding to the protruding positioning block 21 of setting up of the top of hanging screw 51, therefore no matter the valve opening and closing instantaneous pressure is much, the top of hanging screw 51 is subjected to spacing, can't come off, all the time play fixation, when guaranteeing the Swing check valve applicable performance, surge pressure that will " water hammer " reduces to minimum.
Claims (3)
1. Swing check valve, include valve body, valve gap, flap, rocking bar and hanging, described valve body is provided with seal valve seat, described flap and the setting of seal valve seat corresponding matching and be fixed in the lower end of rocking bar, the upper end of described rocking bar is rotated and is installed on the below of hanging, described valve body is provided with hangs fixed plate, described hanging by hanging screw is installed on and hangs on the fixed plate, and hang the inwall of the head of screw over against valve gap, it is characterized in that: be set with protruding fixed block corresponding to the head end of hanging screw on the inwall of described valve gap, and lower end surface that should the projection fixed block with hang the screw head end and constitute the gap over against cooperating.
2. a kind of Swing check valve according to claim 1 is characterized in that: described protruding fixed block and the moulding of valve gap integrally casting are provided with.
3. a kind of Swing check valve according to claim 1 and 2 is characterized in that: described rocking bar is hung by rotatable being installed on of lateral pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201505208U CN201615258U (en) | 2010-03-31 | 2010-03-31 | Swing check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201505208U CN201615258U (en) | 2010-03-31 | 2010-03-31 | Swing check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201615258U true CN201615258U (en) | 2010-10-27 |
Family
ID=43001627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201505208U Expired - Fee Related CN201615258U (en) | 2010-03-31 | 2010-03-31 | Swing check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201615258U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103411003A (en) * | 2013-08-07 | 2013-11-27 | 兰州高压阀门有限公司 | High-pressure, high-alloy and large-diameter hydrocracking check valve and casting technology thereof |
-
2010
- 2010-03-31 CN CN2010201505208U patent/CN201615258U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103411003A (en) * | 2013-08-07 | 2013-11-27 | 兰州高压阀门有限公司 | High-pressure, high-alloy and large-diameter hydrocracking check valve and casting technology thereof |
| CN103411003B (en) * | 2013-08-07 | 2016-02-17 | 兰州高压阀门有限公司 | Hydrocracking high pressure, high alloy, heavy caliber safety check and casting technique thereof |
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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: 20101027 Termination date: 20140331 |