CN200958638Y - Nozzle check valve - Google Patents
Nozzle check valve Download PDFInfo
- Publication number
- CN200958638Y CN200958638Y CN 200620122840 CN200620122840U CN200958638Y CN 200958638 Y CN200958638 Y CN 200958638Y CN 200620122840 CN200620122840 CN 200620122840 CN 200620122840 U CN200620122840 U CN 200620122840U CN 200958638 Y CN200958638 Y CN 200958638Y
- Authority
- CN
- China
- Prior art keywords
- guide rod
- flap
- spring
- gland
- valve body
- 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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- Check Valves (AREA)
Abstract
This utility model relates to spray nozzle type check valve, including a valve body, a valve clack, a cover, a spring, a shaft sleeve and a guide rod, the valve body with a medium inlet channel and an outlet channel is connected with cover with center hole, the valve clack is installed in the valve body, consisted of a link block, a fluid guide pipe and a valve clack main body; the shaft sleeve which can fix guide rod is installed in the center hole of cover; the guide rod is connected with the valve clack via connecting holes; one end of spring is fixed on the cover and the other end is fixed at the left end of guide rod. The useful effects of this utility model are that the installation is convenient, and this utility model can be installed vertically and horizontally; the weight of valve clack is light, the stroke is short, and the on-off is rapid; no impact and noise will occur when closing; the spring isn't directly connected with medium and the service life is longer.
Description
Technical field
The utility model relates to a kind of nozzle-type safety check.
Background technique
The nozzle-type safety check is installed in pipe-line system, and it mainly acts on is to prevent that medium from flowing backwards, and the protection fore device is avoided the impact of reflux medium, is mainly used in the pipeline mounted pump outlet port of industrial departments such as drainage system, petrochemical industry.Common nozzle formula safety check is installed on the pipeline at present, realize its function by its flap deadweight and medium reaction force, but when entrance point does not have medium, flap impacts to valve body with scram, is unfavorable for the safe handling of nozzle-type safety check, flap falls from valve gap in use simultaneously, easily produce the skew of position, make valve can not well stop the refluence of medium, also can produce leakage phenomenon when serious.
The model utility content
The purpose of this utility model provides the nozzle-type safety check, the open and close of the flap of this nozzle-type safety check are to be in the dynamic equilibrium of forces system, so no matter how the pressure medium of entrance point changes, this nozzle-type safety check operates steadily, valve body is not had impact.
The purpose of this utility model is to be achieved through the following technical solutions:
The nozzle-type safety check, comprise valve body, flap, gland, spring, axle sleeve and guide rod, wherein, valve body with medium inlet passage and flow pass is fixedlyed connected with the gland with center hole, flap is installed in the valve body, is made up of contiguous block, honeycomb duct, flap main body and guide rod attachment hole; But be inlaid with the axle sleeve of positioning and guiding bar in the gland center hole; Described guide rod left end is connected and fixed nut, right-hand member embeds in the guide rod attachment hole of flap, and fixedly connected with flap to guarantee that guide rod and flap can move around along the axle sleeve in the gland center hole synchronously through the guide rod attachment screw, simultaneously, move in order to limit this, compressed spring is housed between gland and set screw nut, so that flap contacts with valve body, described spring one end is fixed on the gland, and the described spring the other end is fixed on the guide rod left end set screw nut.When no MEDIA FLOW was crossed valve body, flap always was in closed condition under the spring force effect; When entrance point has MEDIA FLOW fashionable, flap breaks away from valve seat, valve opening at medium active force lower compression spring; When medium ended suddenly, flap quick closedown under spring and medium reaction force acts prevented medium back flow and produces water hammer, with the safe operation of installing behind the Protective valve.
The beneficial effect of nozzle-type safety check described in the utility model: valve body structure length is short, be convenient to install, and vertical, substantially horizontal all can; Flap is in light weight, and stroke is shorter, opens and closes rapidly; It is streamlined that medium channel is, and fluid resistance is little; But the pressure loss does not have impact, noiseless when closing in allowed band; And pressure spring directly do not contact with medium, thereby the life-span is longer.
Description of drawings
With embodiment the utility model is described in further detail with reference to the accompanying drawings below.
Fig. 1 is the cross-sectional view of the described nozzle-type safety check of the utility model embodiment;
Fig. 2 is the cross-sectional view of the described nozzle-type safety check of the utility model embodiment flap.
Among the figure:
1, valve body; 2, flap; 3, gland attachment screw; 4, gland; 5, guide rod; 6, set screw nut; 7, spring; 8, axle sleeve; 9, guide rod attachment screw; 10, medium inlet passage; 11, medium flow pass; 12, guide rod attachment hole; 13, contiguous block; 14, honeycomb duct; 15, flap main body.
Embodiment
Shown in Fig. 1-2, the described nozzle-type safety check of the utility model embodiment, comprise flap 2, valve body 1, gland 4, spring 7, axle sleeve 8 and guide rod 5 with guide rod attachment hole 12, the valve body 1 that wherein has medium inlet passage 10 and medium flow pass 11 is fixedlyed connected with the gland 4 with center hole by gland attachment screw 3, simultaneously, in the center hole of gland 4, be inlaid with the axle sleeve 8 of positioning and guiding bar 5 effects.Described guide rod 5 left ends connect the set screw nut 6 that connects with spot welding, right-hand member embeds in the guide rod attachment hole 12 of flap 2, and fixedly connected with flap 2 to guarantee that guide rod 5 and flap 2 can move around along the axle sleeve 8 in gland 4 center holes synchronously through guide rod attachment screw 9, simultaneously, move in order to limit this, between gland 4 and set screw nut 6, compressed spring 7 is housed so that flap 2 contacts with valve body 1, spring 7 one ends are fixed on the gland 4, the spring the other end is fixed on the guide rod 5 left end set screw nuts 6, thereby guarantees that medium inlet passage 10 is not having to be in closed condition under the external force effect all the time; Described flap 2 is installed in the valve body 1, is made up of contiguous block 13, honeycomb duct 14, flap main body 15 and guide rod attachment hole 12.
In the work, when medium inlet passage 10 has high-pressure medium to enter, because the positive pressure effect of medium, promote flap 2, while pressure spring 7, flap 2 moves right, valve opening, medium enter pipeline 10 and connect, and fluid can flow out this nozzle-type safety check from medium flow pass 11 smoothly; Otherwise after the pressure medium at 10 mouthfuls of places of medium inlet passage was cut off, to left movement, valve was closed rapidly flap 2 under the reaction of the elastic force of spring 7 and pressure medium, reaches effectively, prevents in good time the purpose that medium flows backwards, and the protection fore device; Simultaneously, because the open and close of flap 2 are to be in the dynamic equilibrium of forces system, so no matter how the pressure medium of entrance point changes, this nozzle-type safety check operation is all very steady, add the airflow design of medium channel, do not have impact when making this nozzle-type safety check operation.
Claims (1)
1, nozzle-type safety check, comprise valve body (1), flap (2), gland (4), spring (7), axle sleeve (8) and guide rod (5), wherein valve body (1) has medium inlet passage (10) and medium flow pass (11), gland (4) has center hole, valve body (1) is fixedlyed connected with gland (4), flap (2) is installed in the valve body (1), and flap (2) is made up of contiguous block (13), honeycomb duct (14), flap main body (15); Gland (4) but be inlaid with the axle sleeve (8) of positioning and guiding bar (5) in the center hole; It is characterized in that: guide rod (5) left end is connected and fixed nut (6), and right-hand member embeds in the guide rod attachment hole (12) of flap (2); Between gland (4) and the set screw nut (6) spring (7) is housed, spring (7) one ends are fixed on the gland (4), and the other end is fixed on the guide rod left end set screw nut (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620122840 CN200958638Y (en) | 2006-07-26 | 2006-07-26 | Nozzle check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620122840 CN200958638Y (en) | 2006-07-26 | 2006-07-26 | Nozzle check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200958638Y true CN200958638Y (en) | 2007-10-10 |
Family
ID=38785520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620122840 Expired - Lifetime CN200958638Y (en) | 2006-07-26 | 2006-07-26 | Nozzle check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200958638Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107567560A (en) * | 2015-02-24 | 2018-01-09 | 古德温国际有限公司 | Nozzle and non-return valve |
| CN108474489A (en) * | 2015-11-20 | 2018-08-31 | 武内普莱斯工业株式会社 | Check valve structure, the jet element and extrusion-type container for having used it |
-
2006
- 2006-07-26 CN CN 200620122840 patent/CN200958638Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107567560A (en) * | 2015-02-24 | 2018-01-09 | 古德温国际有限公司 | Nozzle and non-return valve |
| US10837564B2 (en) | 2015-02-24 | 2020-11-17 | Goodwin Plc | Nozzle check valve |
| CN108474489A (en) * | 2015-11-20 | 2018-08-31 | 武内普莱斯工业株式会社 | Check valve structure, the jet element and extrusion-type container for having used it |
| CN108474489B (en) * | 2015-11-20 | 2020-11-03 | 武内普莱斯工业株式会社 | Check valve structure, nozzle member using same, and squeeze container |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20071010 |
|
| EXPY | Termination of patent right or utility model |