CN102094981A - Throttle valve - Google Patents
Throttle valve Download PDFInfo
- Publication number
- CN102094981A CN102094981A CN 201110051230 CN201110051230A CN102094981A CN 102094981 A CN102094981 A CN 102094981A CN 201110051230 CN201110051230 CN 201110051230 CN 201110051230 A CN201110051230 A CN 201110051230A CN 102094981 A CN102094981 A CN 102094981A
- Authority
- CN
- China
- Prior art keywords
- valve
- valve rod
- pressure release
- spool
- rotation
- 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.)
- Pending
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Abstract
The invention discloses a throttle valve. The throttle valve comprises a valve body, a valve core, a rotary valve stem, a valve cover and a handle, wherein the valve core is arranged in the valve body; the handle is connected with the rotary valve stem; the valve cover covers the upper side of the valve body; a choke of the valve body is provided with an L-shaped sealing step; an inverted trapezoidal structure is formed on the lower part of the valve core and is matched with the L-shaped sealing step; a pressure relief valve stem is screwed on the lower part of the rotary valve stem; the lower part of the pressure relief valve stem is extended into a pressure relief valve passage of the valve core; and the lower end of the pressure relief valve stem is provided with a pressure relief valve core. The throttle valve has the characteristics of high sealing property, long service time and labor saving in opening.
Description
Technical field
The present invention relates to a kind of valve, specifically a kind of throttle valve.
Background technique
Existing throttle valve in use, impurity in the fluid and particle etc. are bigger to the destruction of sealing surface, this valve seal failure occurs in use for some time easily.So existing throttle valve working life is short, reliability is low.Be used in as existing throttle valve in the pipeline of high-velocity fluid, seal failure occur easilier.
Summary of the invention
The objective of the invention is to design a kind of throttle valve.
The present invention will solve is that seal failure, working life is short, reliability is low problem appear in existing throttle valve easily.
Technological scheme of the present invention is: the present invention includes valve body, spool, rotation valve rod, valve gap and handle, spool is located in the valve body, and handle is connected with rotation valve rod, and valve gap is placed on the valve body upside.Valve body restriction place is provided with L type sealed step, the spool downside is the inverted ladder type structure, this inverted ladder type structure and L type sealed step coupling, and the rotation valve rod bottom is rotary with the pressure release valve rod, this pressure release stem lower portion is inserted in the Decompression valves road of spool, and the lower end of pressure release valve rod is provided with pressure releasing valve core.
Advantage of the present invention is: the present invention can delay the seal failure time well, prolongs valve working life and has improved reliability.Because valve of the present invention, under opening state, ducted fluid is less at the flow velocity at sealing surface place, and impurity in the fluid and particle etc. are died down to the destruction of sealing surface.The present invention is used in the pipeline of high-velocity fluid, and is more obvious in the advantage aspect sealing reliability and working life.Unlatching of the present invention is also comparatively laborsaving.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the A-A generalized section (under the opening state) of Fig. 1.
Fig. 3 is the structural representation under Fig. 2 closed condition.
Fig. 4 is a valve body structure schematic representation of the present invention.
Embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
As shown in the figure, the present invention includes valve body 3, spool 10, rotation valve rod 16, valve gap 2 and handle 1.Spool 10 is located in the valve body 3.Handle 1 is connected with rotation valve rod 16.Valve gap 2 is placed on valve body 3 upsides.Valve body restriction place is provided with L type sealed step 11.Spool 10 downsides are inverted ladder type structure 12, this inverted ladder type structure 12 and L type sealed step 11 couplings, and when inverted ladder type structure 12 combines with the sealing surface 18 of L type sealed step 11, this throttling valve seal.
Be provided with limiting stopper 7 on the top of spool 10,7 are provided with limit chamber 18 in the limiting stopper.Pressure release valve rod 6 is provided with limited ring 15, and limited ring 15 is positioned at limit chamber 18, and there is spring 14 on the top, bottom of limited ring 15, and there is annular cushion block 8 on the top, bottom of spring 14.
Be provided with pressure release valve rod road 5 in the rotation valve rod 16.The bottom of rotation valve rod 16 is provided with internal thread, and the epimere of pressure release valve rod 6 is provided with outside thread 17, and the outside thread 17 of pressure release valve rod is threaded onto on the internal thread of rotation valve rod.Flow indicator collet 4 is equipped with at the top of valve gap 2.
Working principle of the present invention is: down, handle with sleeve 1, the rotation valve rod 16 of valve gap 2 inside rotate thereupon, and the pressure release valve rod 6 that is connected with rotation valve rod 16 is upwards spurred in off position, and the pressure releasing valve core 9 of pressure release valve rod 6 lower ends is opened.Along with the rotation of handle 1, pressure release valve rod 6 pushes up limiting stopper 7, and drives limiting stopper 7 and spool 10 integral body move upward, the seal failure of sealing surface 19 between spool 10 and the valve body 3, and throttle valve is opened.Owing to finished the pressure release action in spool 10 upper chamber 20, can easily spool 10 be mentioned so pressure balance on the spool 10, handle 1 drive pressure release valve rod 6, finish breakdown action, and can monitor the valve flow size, thereby regulate pipeline flow by flow indicator collet 4.
Under this throttling opening of valves state, counter clockwise direction handle with sleeve 1, make pressure releasing valve core 9 contact and seal with spool 10, be rotated further handle 1, pressure release valve rod 6 reaches lower limit and drives spool 10 and moves to sealing surface 19 directions simultaneously, and finally finish spool 10 and contact airtightly with valve body 3, realize sealing.
Throttle valve of the present invention is under opening state, because sealing surface 19 is in the flex point place of " L " sealed step structure, therefore, ducted rate of flow of fluid is less at this place, a little less than the destructions to sealing surface 19 such as impurity in the fluid and particle, delay its seal failure time well, prolonged the reliability of working life and sealing.
Claims (4)
1. throttle valve, comprise valve body, spool, rotation valve rod, valve gap and handle, spool is located in the valve body, and handle is connected with rotation valve rod, and valve gap is placed on the valve body upside, it is characterized in that valve body restriction place is provided with L type sealed step, the spool downside is the inverted ladder type structure, this inverted ladder type structure and L type sealed step coupling, and the rotation valve rod bottom is rotary with the pressure release valve rod, this pressure release stem lower portion is inserted in the Decompression valves road of spool, and the lower end of pressure release valve rod is provided with pressure releasing valve core.
2. throttle valve according to claim 1 is characterized in that the top of spool is provided with limiting stopper, is provided with limit chamber in the limiting stopper, the pressure release valve rod is provided with limited ring, limited ring is positioned at limit chamber, and there is spring on the top, bottom of limited ring, and there is annular cushion block on the top, bottom of spring.
3. throttle valve according to claim 1 is characterized in that being provided with in the rotation valve rod pressure release valve rod road, and the rotation valve rod lower inside is provided with internal thread, and the epimere of pressure release valve rod is provided with outside thread, and the external thread rotary of pressure release valve rod is on the internal thread of rotation valve rod.
4. throttle valve according to claim 1 is characterized in that the flow indicator collet is equipped with at the top of valve gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110051230 CN102094981A (en) | 2011-03-03 | 2011-03-03 | Throttle valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110051230 CN102094981A (en) | 2011-03-03 | 2011-03-03 | Throttle valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102094981A true CN102094981A (en) | 2011-06-15 |
Family
ID=44128186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110051230 Pending CN102094981A (en) | 2011-03-03 | 2011-03-03 | Throttle valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102094981A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2179937Y (en) * | 1993-11-18 | 1994-10-19 | 唐荷法 | Double-seal stop valve for air conditioner |
| EP1150051A2 (en) * | 2000-04-26 | 2001-10-31 | ARI-ARMATUREN ALBERT RICHTER GmbH & Co.KG. | Safety valve |
| CN201526691U (en) * | 2009-06-23 | 2010-07-14 | 汪玉奎 | Self-relief gate valve |
| CN201531621U (en) * | 2009-09-28 | 2010-07-21 | 株洲华清阀门机械制造有限公司 | Energy-saving balance corrugated pipe valve |
-
2011
- 2011-03-03 CN CN 201110051230 patent/CN102094981A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2179937Y (en) * | 1993-11-18 | 1994-10-19 | 唐荷法 | Double-seal stop valve for air conditioner |
| EP1150051A2 (en) * | 2000-04-26 | 2001-10-31 | ARI-ARMATUREN ALBERT RICHTER GmbH & Co.KG. | Safety valve |
| CN201526691U (en) * | 2009-06-23 | 2010-07-14 | 汪玉奎 | Self-relief gate valve |
| CN201531621U (en) * | 2009-09-28 | 2010-07-21 | 株洲华清阀门机械制造有限公司 | Energy-saving balance corrugated pipe valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20110615 |