CN2931976Y - Current limiting check valve - Google Patents
Current limiting check valve Download PDFInfo
- Publication number
- CN2931976Y CN2931976Y CN 200620062117 CN200620062117U CN2931976Y CN 2931976 Y CN2931976 Y CN 2931976Y CN 200620062117 CN200620062117 CN 200620062117 CN 200620062117 U CN200620062117 U CN 200620062117U CN 2931976 Y CN2931976 Y CN 2931976Y
- Authority
- CN
- China
- Prior art keywords
- valve body
- water
- valve
- spool
- face
- 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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Abstract
The utility model discloses a current limiting inverted valve, which comprises a valve body and a valve plug, wherein the valve body is volume-shaped, one end of the valve body is flat surface and the other end is crown face and is provided with a center through-hole and a plurality of water-inlet entries on the long direction. The valve plug is a flexible body, which comprises an arc-shaped upstream surface, a flat backflow proof surface and a connecting volume, wherein two ends of the connecting volume are respectively connected on the inner surface of the upstream surface and the backflow proof surface. The valve plug connecting volume is arranged in the center through-hole of the valve body, the upstream surface of which is arrange on the inner end of the valve body crown face, and the backflow proof surface is arranged on the inner end of the valve body flat surface. Due to the arc-shaped upstream surface of the valve plug, when the pressure difference of the valve plug upstream surface is bigger than a given strain force value, part of the upstream surface will deform after pressure and block the passage mouth to slow down the flow and serve as current limiting. When stop supplying water, the backflow proof surface will firmly attach to the other end of the valve body to close the upper water outlet and prevent water from flowing back to the water supply system from the water outlet.
Description
Technical field
The utility model relates to a kind of water flow valve, particularly relates to a kind of current limliting check valve.
Background technique
At present, there is following defective in the inlet valve that is installed in the water pipeline: 1, in water pipeline, when water flow pressure is excessive, flow rate of water flow is very fast, flow instability easily produces strong water attack, makes bad phenomenon such as the inefficacy of inlet valve valve closing, water level instability, life-span shorten easily.2, when water pipe is cut off the water, the water system that can flow backwards back from the intake pipe of inlet valve of the water in the water tank causes water to pollute.
The model utility content
The purpose of this utility model is to provide a kind of current limliting check valve, and it can current limliting when hydraulic pressure is big, and current limliting not during low pressure when water pipe is cut off the water, can prevent that the aqueous reflux in the water tank from returning water system.
For achieving the above object, technical solution of the present utility model is:
The utility model is a kind of current limliting check valve; It mainly is made up of valve body and spool; Described valve body is a Cylindrical object, and an one interior edge face is the plane, and another interior edge face is an arc surface, vertically is provided with a central through bore and a plurality of intake tunnel along it; Described spool is a flexible body, and it is by being circular-arc upstream face, being plane anti-down stream interface and attachment post and forming, and described attachment post two ends terminate at the interior edge face of upstream face and anti-down stream interface; Described spool attachment post is nested with in the central through bore of valve body, and its upstream face is arranged in the circular arc interior edge face of valve body, and its anti-down stream interface is arranged on the plane interior edge face of valve body.
Described spool upstream face is bowl-shape or hemispherical.
Described spool is the rubber spool.
After adopting such scheme, the utility model is provided with a spool of being made by flexible material such as rubber, the upstream face of this spool and anti-down stream interface are fitted in respectively on two end faces of valve body, during water inlet, the whole face of rubber spool upstream face of hemisphere face shape is subjected to the effect of hydraulic pressure, the upstream face back side has only water port place to be subjected to the effect of hydraulic pressure, thereby the suffered active force in two sides, front and back is unequal, produces pressure difference.When the rubber pressure difference that acts on hemisphere face shape when setting rubber deformation power value, rubber produces distortion, has sealed the part cross section of water port, thereby has reached metering function; When the rubber pressure difference that acts on hemisphere face shape during less than the rubber deformation power value set, rubber does not produce distortion, and the cross section of water port does not change, and flow velocity does not change yet, promptly not living metering function.And anti-down stream interface can tightly be fitted on another end face of valve body when no water flowing, with the sealing of the inlet on the valve body, prevents that the water of water tank is back to water system from water outlet.
Below in conjunction with the drawings and specific embodiments the utility model is further described.
Description of drawings
Fig. 1 is a three-dimensional exploded view of the present utility model;
Fig. 2 is an axonometric drawing of the present utility model;
Fig. 3 is the sectional view of the utility model valve body;
Fig. 4 A is the working state figure of the utility model when not having water flowing;
Working state figure when Fig. 4 B is the low hydraulic pressure of the utility model;
Working state figure when Fig. 4 C is the high hydraulic pressure of the utility model;
Fig. 5 A is the not working state figure during current limliting of the utility model spool;
Working state figure when Fig. 5 B is the utility model spool current limliting;
Fig. 6 is the utility model user mode figure.
Embodiment
As shown in Figure 1, the utility model is a kind of current limliting check valve; It is made up of valve body 1, spool 2 and seal ring 3.
As shown in Figure 1 and Figure 2, described valve body 1 is a Cylindrical object, and an one interior edge face 11 is an arc surface, and another interior edge face 12 is the plane, vertically is provided with a central through bore 13 and a plurality of intake tunnel 14 along it.
As shown in Figure 1, described spool 2 flexible body for making by rubber material, integral body is dumbbell shaped.It is by being circular-arc upstream face 21, being plane anti-down stream interface 22 and attachment post 23 and forming.Described attachment post 23 two ends terminate at the center of the interior edge face of upstream face 21 and anti-down stream interface 22.Described spool 2 attachment posts 23 are nested with in the central through bore 13 of valve body 1, its upstream face 21 is arranged in the circular arc interior edge face 12 of valve body 1, and when water flow pressure was big, upstream face 21 centers one circle can be fitted in circular arc interior edge face 12 and make a circle outward and then can be out of shape, and part is stopped up 14 mouthfuls of intake tunnels; Its anti-down stream interface 22 is arranged on the plane interior edge face 11 of valve body 1, water system stop to cistern water supply the time, rubber spool upstream face resiles, and anti-down stream interface 22 backwaters to water pressure greater than the water pressure of intake tunnel 14 directions, anti-down stream interface 22 can tightly be fitted on the valve body 1 plane interior edge face 11.The upstream face 21 of spool 2 can be bowl-shape or hemispherical, so that circular arc interior edge face 12 shapes of better and valve body 1 adapt.
Described seal ring 3 is socketed on the outer peripheral surface of valve body 1, so that the airtight intake tunnel 101 interior (as shown in Figure 6) that is installed in inlet valve 10.
Working principle of the present utility model (as shown in Figure 1):
The utility model is made the upstream face 21 of spool 2 and plane interior edge face 11 and the circular arc interior edge face 12 that anti-down stream interface 22 is fitted in valve body 1 respectively by rubber material.Because the upstream face 21 of spool 2 is circular-arc.When not producing current limliting when no water flowing (shown in Fig. 4 A) and low hydraulic pressure (shown in Fig. 4 B) (shown in Fig. 5 A), spool 2 upstream faces 21 are rounded; When water inlet, the upstream face 2 whole faces of spool 2 are subjected to the effect of hydraulic pressure, the back side of the upstream face 2 of spool 2 has only intake tunnel 14 places to be subjected to the effect of hydraulic pressure, thereby the suffered active force in two sides, front and back is unequal, produce pressure difference, when pressure difference is set the deformation force value greater than spool 2, part spool 2 upstream faces 21 pressurizeds that extend on the water intake 141 (as shown in Figure 3) of valve body 1 intake tunnel 14 can be out of shape (shown in Fig. 4 C, 5B), horizontal area increases, part is stopped up 14 mouthfuls of intake tunnels, flow channel is reduced, thereby play the effect of current limliting.Water system stop to cistern water supply the time, rubber spool upstream face resiles, and anti-down stream interface 22 backwaters to water pressure greater than the water pressure (shown in Fig. 4 A) of intake tunnel 14 directions, spool 2 slides in valve body 1 central through bore 13, anti-down stream interface 22 being fitted on the valve body 1 plane interior edge face 11 tightly, water outlet 142 sealings with the intake tunnel on the valve body 1 14 prevent that the water of water tank is back to water system from water outlet 142, pollute water system.
Claims (3)
1, a kind of current limliting check valve; It is characterized in that: it mainly is made up of valve body and spool; Described valve body is a Cylindrical object, and an one interior edge face is the plane, and another interior edge face is an arc surface, vertically is provided with a central through bore and a plurality of intake tunnel along it; Described spool is a flexible body, and it is by being circular-arc upstream face, being plane anti-down stream interface and attachment post and forming, and described attachment post two ends terminate at the interior edge face of upstream face and anti-down stream interface; Described spool attachment post is nested with in the central through bore of valve body, and its upstream face is arranged on the circular arc interior edge face of valve body, and its anti-down stream interface is arranged on the plane interior edge face of valve body.
2, current limliting check valve according to claim 1 is characterized in that: described spool upstream face is bowl-shape or hemispherical.
3, current limliting check valve according to claim 1 is characterized in that: described spool is the rubber spool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620062117 CN2931976Y (en) | 2006-07-20 | 2006-07-20 | Current limiting check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620062117 CN2931976Y (en) | 2006-07-20 | 2006-07-20 | Current limiting check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2931976Y true CN2931976Y (en) | 2007-08-08 |
Family
ID=38348475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620062117 Expired - Fee Related CN2931976Y (en) | 2006-07-20 | 2006-07-20 | Current limiting check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2931976Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106136884A (en) * | 2015-04-03 | 2016-11-23 | 佛山市顺德区美的饮水机制造有限公司 | Current damping device and water purifier |
-
2006
- 2006-07-20 CN CN 200620062117 patent/CN2931976Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106136884A (en) * | 2015-04-03 | 2016-11-23 | 佛山市顺德区美的饮水机制造有限公司 | Current damping device and water purifier |
| CN106136884B (en) * | 2015-04-03 | 2019-11-08 | 佛山市顺德区美的饮水机制造有限公司 | Water flow damping device and water purifier |
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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: 20070808 |