CN2298387Y - Straight check valve - Google Patents
Straight check valve Download PDFInfo
- Publication number
- CN2298387Y CN2298387Y CN 96250824 CN96250824U CN2298387Y CN 2298387 Y CN2298387 Y CN 2298387Y CN 96250824 CN96250824 CN 96250824 CN 96250824 U CN96250824 U CN 96250824U CN 2298387 Y CN2298387 Y CN 2298387Y
- Authority
- CN
- China
- Prior art keywords
- flap
- valve barrel
- guide sleeve
- valve
- 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 - Fee Related
Links
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- Check Valves (AREA)
Abstract
The utility model relates to a check valve, comprising a valve body, a valve clack and a sealing member. The valve body is composed of a left and a right parts, and a guide sleeve is arranged between the right valve body and the valve clack. Springs are arranged on the end surface of the right side of the valve clack and in the step of the right valve body. The utility model can be reliably closed in smaller negative direction pressure, and can be simultaneously suitable for the installation and use of horizontal and vertical occasions.
Description
The utility model relates to a kind of valve, specifically about a kind of safety check.
The safety check that domestic production is at present used has two kinds, a kind of is Lift check valve, and another kind is a Swing check valve, these two kinds of safety check low cost of manufactures, applied range, its deficiency is: the level that all only is applicable to is installed, and relies on the flap deadweight to close, and needs bigger reverse pressure when closing, as service time when longer, flap and rotating shaft incrustation thereof get rusty, make flap open dumb, can not return or be not closed completely, do not have the non-return seal action.
To be that design is a kind of both be applicable to vertical installation occasion to the purpose of this utility model, and the level that is applicable to is again installed occasion, the Through-conduit check valve that hour also can reliably close at reverse pressure.
The purpose of this utility model can be realized by following scheme; Line check valves comprises valve body, flap and Sealing, and valve body is made up of left and right sides two-part, and a guide sleeve is arranged between right valve barrel and flap, between the interior step of the right side of flap and right valve barrel spring is housed.
The utility model with have technology to compare to have simple in structure, easy to maintenance, reliable operation, and can be applicable to installing and using of level and vertical two kinds of occasions.
Fig. 1 is the sectional view of the utility model line check valves.
Now in conjunction with the accompanying drawings the utility model is further described.
The utility model comprises left valve barrel 1, right valve barrel 3, Sealing 2, flap 5, one guide sleeve 4 is arranged between right valve barrel 3 and flap 5, guide sleeve 4 inner circumferences are shaped on two above muscle, step in the middle of the muscle is that flap 5 is driven high limit stoper, in the guide sleeve between flap 5 right sides and the right valve barrel 3 spring 6 is housed.Left valve barrel 1 and right valve barrel 3 are connected by flange, and the sealing surface of left valve barrel 1 and flap 5 is by directly built-up welding processing on the plane of left valve barrel 1 of stainless steel electrode.Flap 5, guide sleeve 4, spring 6 all adopt stainless steel material.
The line check valves of said structure is opened and closed by the mobile realization of medium, and when upstream pressure increased, flap was opened automatically, and medium flows through between the guide sleeve supporting rib; When downstream pressure during greater than upstream pressure, flap is closed automatically by spring thrust and medium reverse resistance, reaches the purpose that stops adverse current.
Claims (3)
1, a kind of line check valves, comprise valve body, flap, diaphragm seal, it is characterized in that described valve body is made up of left valve barrel (1) and right valve barrel (3), between right valve barrel (3) and flap (5), a guide sleeve (4) is arranged, between the interior step of the right side of flap (5) and right valve barrel (3), spring (6) is housed.
2, according to the line check valves of claim 1, it is characterized in that the interior garden of described guide sleeve (4) is shaped on two above muscle on week, flap (5) moves in the muscle of guide sleeve (4), is equipped with the limited step that a restriction flap moves to right in the muscle interposition.
3,, it is characterized in that described left valve barrel (1) is connected by flange with right valve barrel (3) according to the line check valves of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96250824 CN2298387Y (en) | 1996-12-14 | 1996-12-14 | Straight check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96250824 CN2298387Y (en) | 1996-12-14 | 1996-12-14 | Straight check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2298387Y true CN2298387Y (en) | 1998-11-25 |
Family
ID=33921492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96250824 Expired - Fee Related CN2298387Y (en) | 1996-12-14 | 1996-12-14 | Straight check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2298387Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107372232A (en) * | 2017-09-14 | 2017-11-24 | 葛洪伟 | aquatic animal breeding device |
-
1996
- 1996-12-14 CN CN 96250824 patent/CN2298387Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107372232A (en) * | 2017-09-14 | 2017-11-24 | 葛洪伟 | aquatic animal breeding device |
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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 |