CN102829199A - Non-rising stem gate valve - Google Patents
Non-rising stem gate valve Download PDFInfo
- Publication number
- CN102829199A CN102829199A CN2012101386382A CN201210138638A CN102829199A CN 102829199 A CN102829199 A CN 102829199A CN 2012101386382 A CN2012101386382 A CN 2012101386382A CN 201210138638 A CN201210138638 A CN 201210138638A CN 102829199 A CN102829199 A CN 102829199A
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- China
- Prior art keywords
- valve
- gate valve
- rising stem
- hollow circular
- inside screw
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- 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.)
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Abstract
The invention discloses a non-rising stem gate valve. The gate valve comprises a valve deck and a valve rod connected below the valve deck, wherein valve flaps are fixedly connected at the tail end of the valve rod by valve flap nuts; and a spiral convex plate is arranged on the inner wall of the valve deck and is fit with a hollow cylinder (1) with a plurality of wedge-shaped heaves at the surface. The gate valve has simple structure, is easy to assemble, works reliably and is lower in cost lower than the traditional locking gland type non-rising stem gate valve.
Description
Technical field
The present invention relates to inside screw non-rising stem type gate valve.
Background technique
Gate valve is the Vertical direction of open-shut device-flap along the path center line, move up (unlatching), move down the valve of (closing).Gate valve is widely used in the pipeline and controls fluid as a kind of start-stop device.Inside screw non-rising stem type gate valve accounts for more than 80% of gate valve kind.Inside screw non-rising stem type gate valve is that valve rod is when making circular movement; The restricted gate valve of straight line motion up and down of valve rod, valve rod makes flap nut moving linearly (receiving the restriction of flap because of the circular movement of flap nut) through trapezoidal thread; Drive flap and move up and down, open and close function thereby gate valve is satisfied as straight line.
See that from traditional form the restriction valve rod is straight line motion up and down, upwards lean on valve gap spacing; The main downwards stopping gland type that leans on is spacing spacing, as shown in Figure 1 with the stopping nut type, and the stopping gland type is spacing to be fixed by bolts on the valve gap because of gland; Defective is that the big part of volume is many, as shown in Figure 2, and Thrust nut is spacing; Defective is a processed complex, and nut is prone to loosening.
Summary of the invention
The purpose of this invention is to provide a kind of simple in structure, assembling easily, the straight-line inside screw non-rising stem type gate valve of restriction valve rod of reliable operation.
Technological scheme of the present invention is a kind of inside screw non-rising stem type gate valve; It comprises valve gap and the valve rod that is connected in the valve gap below; Said valve stem end is connected with flap through the flap nut; Said valve gap inwall is provided with the helical boss, and said helical boss is adaptive to have the surface to have the protruding hollow circular cylinder of some wedge shapes.
The improvement of such scheme is to embed between the wedge shape convexity of said hollow circular cylinder some stop blocks are arranged.
The further improvement of such scheme is that the wedge shape of described hollow circuit cylinder surface is raised to rare two.
Further improving of such scheme is that described stop block upper end is provided with the jump ring that the limited motion block moves upward.
The invention has the beneficial effects as follows that structure is simple, assembling is easy, reliable operation, manufacture cost also is lower than traditional stopping gland type and stopping nut type inside screw non-rising stem type gate valve.
Description of drawings
Fig. 1 is a stopping gland type inside screw non-rising stem type gate valve schematic representation;
Fig. 2 is a stopping nut type inside screw non-rising stem type gate valve schematic representation;
Fig. 3 is a schematic representation of the present invention;
Fig. 4 is an organigram of the present invention;
Fig. 5 is the hollow circular cylinder schematic representation;
Fig. 6 is the valve gap schematic representation.
Embodiment
As shown in Figure 4, a kind of inside screw non-rising stem type gate valve, it comprises valve gap and the valve rod that is connected in the valve gap below; Said valve stem end is connected with flap through the flap nut; As shown in Figure 6, said valve gap inwall is provided with the helical boss, and said helical boss is adaptive to have the surface to have the protruding hollow circular cylinder 1 of some wedge shapes; Hollow circular cylinder 1 is as shown in Figure 5, embeds the stop block 2 that has some restriction hollow circular cylinders 1 to move in a circle between the wedge shape convexity of said hollow circular cylinder 1.
Hollow circular cylinder 1 is suitable through the protruding helical boss with the valve gap inwall of the wedge shape on surface; The protruding rotation of hollow circular cylinder 1 surperficial wedge shape embeds the helicoid of valve gap boss when assembling; Hollow circular cylinder 1 surperficial wedge shape convexity is the arc that thickness narrows gradually from cross section, can make tightr that the hollow circular cylinder and the helicoid of valve gap boss combine in rotation like this.Valve rod passes hollow circular cylinder 1 and stretches into valve inner, when valve rod moves upward, has valve gap spacing, when valve rod moves downward, has hollow circular cylinder 1 spacing.The stop block 2 that between hollow circular cylinder 1 surperficial wedge shape convexity, inserts has limited the circular movement of limiting stopper, makes valve rod more stable when moving up and down.The jump ring of packing on stop block 2 tops has limited stop block 2 and has moved upward, and has avoided stop block 2 from valve gap, to come off.Preference of the present invention is that hollow circular cylinder 1 surperficial wedge shape is raised with three, and stop block 2 also has three accordingly, and the present invention makes the simple of part change, and the helicoid location has compensated part's machining errors and made the very easy of processing change.
Claims (4)
1. inside screw non-rising stem type gate valve; It comprises valve gap and the valve rod that is connected in the valve gap below; Said valve stem end is connected with flap through the flap nut, it is characterized in that said valve gap inwall is provided with the helical boss, and said helical boss is adaptive to have the surface to have the protruding hollow circular cylinder (1) of some wedge shapes.
2. a kind of inside screw non-rising stem type gate valve as claimed in claim 1 is characterized in that embedding between the wedge shape convexity of said hollow circular cylinder (1) stop block (2) that has some restriction hollow circular cylinders (1) to move in a circle.
3. according to claim 1 or claim 2 a kind of inside screw non-rising stem type gate valve is characterized in that the wedge shape on described hollow circular cylinder (1) surface is raised to rare two.
4. a kind of inside screw non-rising stem type gate valve as claimed in claim 3 is characterized in that described stop block (2) upper end is provided with the jump ring (3) that limited motion block (2) moves upward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210138638 CN102829199B (en) | 2012-05-08 | 2012-05-08 | Non-rising stem gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210138638 CN102829199B (en) | 2012-05-08 | 2012-05-08 | Non-rising stem gate valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102829199A true CN102829199A (en) | 2012-12-19 |
| CN102829199B CN102829199B (en) | 2013-12-25 |
Family
ID=47332435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210138638 Active CN102829199B (en) | 2012-05-08 | 2012-05-08 | Non-rising stem gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102829199B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010004106A1 (en) * | 1999-12-21 | 2001-06-21 | Kenji Waragai | Gate valve |
| CN2890547Y (en) * | 2005-11-25 | 2007-04-18 | 孙炜 | Structure for preventing outward leakage of valve |
| JP2009030661A (en) * | 2007-07-25 | 2009-02-12 | Hara Kogyo Kk | Gate valve |
| CN201258975Y (en) * | 2008-08-22 | 2009-06-17 | 安徽省屯溪高压阀门有限公司 | Wedge-type single shutter gate valve |
| CN201326767Y (en) * | 2008-11-01 | 2009-10-14 | 黎其银 | Ball valve with integral ball valve core and valve rod |
-
2012
- 2012-05-08 CN CN 201210138638 patent/CN102829199B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010004106A1 (en) * | 1999-12-21 | 2001-06-21 | Kenji Waragai | Gate valve |
| CN2890547Y (en) * | 2005-11-25 | 2007-04-18 | 孙炜 | Structure for preventing outward leakage of valve |
| JP2009030661A (en) * | 2007-07-25 | 2009-02-12 | Hara Kogyo Kk | Gate valve |
| CN201258975Y (en) * | 2008-08-22 | 2009-06-17 | 安徽省屯溪高压阀门有限公司 | Wedge-type single shutter gate valve |
| CN201326767Y (en) * | 2008-11-01 | 2009-10-14 | 黎其银 | Ball valve with integral ball valve core and valve rod |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102829199B (en) | 2013-12-25 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 244000 No. 951, north section of Taishan Avenue, Tongling Development Zone, Anhui Patentee after: TONGLING TIANHAI FLOW CONTROL CO., LTD. Address before: 244000 No. 951, north section of Taishan Avenue, Tongling Development Zone, Anhui Patentee before: Tongling Tianhai Flow Control Co., Ltd. |