CN2260930Y - Automatic non-return valve - Google Patents
Automatic non-return valve Download PDFInfo
- Publication number
- CN2260930Y CN2260930Y CN 96227766 CN96227766U CN2260930Y CN 2260930 Y CN2260930 Y CN 2260930Y CN 96227766 CN96227766 CN 96227766 CN 96227766 U CN96227766 U CN 96227766U CN 2260930 Y CN2260930 Y CN 2260930Y
- Authority
- CN
- China
- Prior art keywords
- valve base
- valve seat
- valve
- automatic check
- upper valve
- 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 relates to an automatic check valve, mainly comprising an upper valve seat, a valve body, a sealed ball and a lower valve seat. The valve body is arranged between the upper valve seat and the lower valve seat, and the upper valve seat is fixedly connected with the lower valve seat through a screw rod. Guide rods are arranged in the valve body and respectively connected with the upper valve seat and the lower valve seat, the sealed ball is arranged between the guide rods, and the bottom of the sealed ball is provided with a bar-shaped convex rod. The valve can be used for a vacuum device which contains liquid and effectively prevent liquid from back flowing to a vacuum system. The utility model has the advantages of simple structure, simple processing, reliable motion, low cost and long service life.
Description
The utility model relates to water-ring pump vacuum pump safety check, specifically is a kind of automatic check valve.
Now, the pump of being sold on market safety check, mostly be a fly valve or vacuum electromagnetic gas charging valve to be set at pumping hole more, the former works as pump and shuts down suddenly, have little time throttle down, it is inevitable to backflow, though the latter closes with motor synchronous, but therefore valve is oil lubrication, also have electromagnetic coil because of long-term contact water smoke, each parts can get rusty in the valve, and circuit damages, so Security is relatively poor, tightness is bad, and in use, people have designed the float-ball type safety check, as the disclosed ZL91217693 vacuum valve of Chinese patent, be that a ball float is settled at the position that the sucking pipe at vacuum vessel connects with vacuum chamber, though this device plays the effect of necessarily preventing to backflowing of working medium liquid, because of amount of movement in sucking pipe and vacuum chamber point of attachment bigger, the position, float chamber is bad, so still existed action unreliable, poor sealing performance, the defective that working life is short.
The purpose of this utility model be to provide a kind of simple in structure, sealing is tight, the automatic check valve of reliable in action, long service life.
The utility model is realized by following scheme:
It is automatic check valve, mainly comprise upper valve base, valve body, ball sealer, lower valve base, between upper valve base and the lower valve base valve body is installed, upper valve base and lower valve base are fixedly connected with screw rod, guide rod is installed in valve body and is connected upper valve base and lower valve base respectively, ball sealer is placed between the guide rod, and the ball sealer bottom has the strip bulge bar.
Yielding support is installed in above-mentioned lower valve base air outlet, and yielding support is by three or three above convex partss.
Above-mentioned yielding support outer cover shock mount.
Above-mentioned upper valve base suction port is installed a dish-shaped resilient pad.
Above-mentioned guide rod is by forming more than three or three.
Describe in further detail below in conjunction with accompanying drawing:
Fig. 1, the utility model cross-sectional view.
Fig. 2, the utility model yielding support cross-sectional view.
Among the figure: 1 upper valve base, 2 dish pads, 3 screw rods, 4 valve bodies, 5 guide rods, 6 ball sealers, 7 springs, 8 yielding supports, 9 times valve bodies
Start vacuum pump, when normal working, ball sealer 6 is under the air-flow effect, with spring 7 compressions, ball sealer 6 is pressed on the yielding support 8 on lower valve base 9 air outlets closely, because yielding support 8 adopts elastic material to make, and projection has strengthened ventilation area, thus reduced the flow resistance when bleeding, if pump is because of having a power failure or the unexpected stall of other reasons, when working medium liquid backflows, ball sealer 6 is upwards floated along guide rod 5, be pressed in closely on the dish-shaped pad 2 of upper valve base 1, because the resiliently deformable that dish pad 2 produces, strengthened area of contact with ball sealer 6, thereby guaranteed the tightness in the vacuum system, in addition owing to yielding support 8 outer cover shock mounts 7, so strengthened the mechanical return of ball sealer 6, simultaneously, under the effect of guide rod 5, the top of ball sealer 6 when backflowing, working medium liquid is contacted with dish pad 2 all the time, make it to have guaranteed tight, reliability, ball sealer 6 can adopt and vacuumize glass marble, also can adopt the vacuum sphere of other materials.
This valve also can be used for being equipped with the vacuum system of liquid, and can prevent effectively that liquid from backflowing in the vacuum system.
The utlity model has following advantage:
1, simple in structure, handling ease.
2, reliable in action, applied widely.
3, low, the long service life of cost.
Claims (5)
1, a kind of automatic check valve, mainly comprise upper valve base, valve body, ball sealer, lower valve base, it is characterized in that between upper valve base and the lower valve base valve body being installed, upper valve base and lower valve base are fixedly connected with screw rod, guide rod is installed in valve body and is connected upper valve base and lower valve base respectively, ball sealer is placed between the guide rod, and the ball sealer bottom has the strip bulge bar.
2, automatic check valve according to claim 1 is characterized in that lower valve base air outlet installation yielding support, and yielding support is by three or three above convex sets.
3, according to claim 1,2 described automatic check valves, it is characterized in that yielding support outer cover shock mount.
4, automatic check valve according to claim 3 is characterized in that the upper valve base suction port installs a dish-shaped pad.
5, automatic check valve according to claim 1 is characterized in that guide rod is by forming more than three or three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96227766 CN2260930Y (en) | 1996-04-19 | 1996-04-19 | Automatic non-return valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96227766 CN2260930Y (en) | 1996-04-19 | 1996-04-19 | Automatic non-return valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2260930Y true CN2260930Y (en) | 1997-08-27 |
Family
ID=33905801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96227766 Expired - Fee Related CN2260930Y (en) | 1996-04-19 | 1996-04-19 | Automatic non-return valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2260930Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103307320A (en) * | 2013-06-18 | 2013-09-18 | 清华大学 | Passive one-way isolating valve, pipeline and pebble-bed high-temperature gas cooled reactor |
| CN103629397A (en) * | 2013-11-05 | 2014-03-12 | 马兆良 | Automatic pressure leakage block valve |
| CN111543372A (en) * | 2020-06-18 | 2020-08-18 | 山东省海洋资源与环境研究院(山东省海洋环境监测中心、山东省水产品质量检验中心) | Fishing platform with floating artificial fish reef |
-
1996
- 1996-04-19 CN CN 96227766 patent/CN2260930Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103307320A (en) * | 2013-06-18 | 2013-09-18 | 清华大学 | Passive one-way isolating valve, pipeline and pebble-bed high-temperature gas cooled reactor |
| CN103629397A (en) * | 2013-11-05 | 2014-03-12 | 马兆良 | Automatic pressure leakage block valve |
| CN103629397B (en) * | 2013-11-05 | 2016-10-26 | 马兆良 | Releasing pressure automatically blocked valve |
| CN111543372A (en) * | 2020-06-18 | 2020-08-18 | 山东省海洋资源与环境研究院(山东省海洋环境监测中心、山东省水产品质量检验中心) | Fishing platform with floating artificial fish reef |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |