CN202867863U - Single-seat regulating valve - Google Patents
Single-seat regulating valve Download PDFInfo
- Publication number
- CN202867863U CN202867863U CN 201220520817 CN201220520817U CN202867863U CN 202867863 U CN202867863 U CN 202867863U CN 201220520817 CN201220520817 CN 201220520817 CN 201220520817 U CN201220520817 U CN 201220520817U CN 202867863 U CN202867863 U CN 202867863U
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- CN
- China
- Prior art keywords
- valve
- seat
- valve body
- spool
- gap
- 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 relates to a single-seat regulating valve which controls pipe flow, in particular to the single-seat regulating valve which is stable in performance and not easy to damage. The single-seat regulating valve comprises a valve body and a valve deck which is provided with a central channel, wherein a linear clamp is arranged between the valve body and the valve deck, an oriented channel which is coaxial to the central channel is arranged in the center of the linear clamp, a valve seat is arranged in an inner cavity of the valve body, a valve core is arranged on the valve seat, one end of the valve core is inserted into the oriented channel and connected with one end of the valve rod, the other end of the valve rod penetrates through the central channel and extends out of the valve deck, a joint pin is arranged between the valve rod and the valve core, and the joint pin is connected with the valve core in a threading mode. The single-seat regulating valve has the advantages of being stable in performance, not easy to damage and long in service life.
Description
Technical field
The utility model relates to a kind of single-seat adjusting valve of controlling pipeline flow, relates in particular to the single-seat adjusting valve of a kind of stable performance, non-easy damaged.
Background technique
In automation control system, modulating valve, is regulated spool stroke by the actuator supporting with it according to the command signal of control system as the terminal actuating device in the automatic regulating system, thereby reaches the purpose of adjust flux.Single-seat adjusting valve structure commonly used is comprised of valve body, valve seat, spool, valve gap, valve rod, filling body, fastening piece and Sealing.When supporting actuator accepted control signal and carries out up and down straight-line displacement action, spool was positioned at the below, and modulating valve is closed condition; Spool is positioned at the top, and modulating valve is opening state.At present, the pins that adopt are connected the Placement that this linkage structure exposes more between the spool of single-seat adjusting valve and the valve rod, and the spool guide element surface that is easy to damage when the assembling pin causes the valve seal performance to reduce, and usability is unstable, and the life-span is short.In addition, the valve gap of above-mentioned single-seat adjusting valve adopts with valve body and is threaded, and when installation is fastening, easily causes the sealing gasket distortion inconsistent because the moment of torsion control that applies is bad, has certain hidden danger that leaks outside.
Summary of the invention
The technical problems to be solved in the utility model provide a kind of valve rod and valve core connecting structure more hidden, the single-seat adjusting valve of stable performance, non-easy damaged.
For solving the problems of the technologies described above, the utility model provides a kind of single-seat adjusting valve, comprise valve body and the valve gap that offers central passage, be provided with liner clamp between described valve body and the valve gap, described liner clamp center offers the guide channel coaxial with described central passage; Described body cavity is provided with valve seat, described valve seat disposes spool, and described spool one end stretches into guide channel and connects an end of valve rod, and the other end of described valve rod passes central passage and stretches out outside the valve gap, be provided with attachment post between described valve rod and the spool, described attachment post is threaded with spool.The utility model uses attachment post to connect as the transition between valve rod and the spool, attachment post and spool are threaded connection, in the situation that guarantee that join strength is hidden at valve core inside with linkage structure, can not scratch the guide channel wall of liner clamp, guaranteed the sealing of valve body, improve the stability of whole modulating valve, prolonged working life simultaneously.
As preferably, described attachment post is connected with threaded stem.This structure is easy to connect.
As preferably, described attachment post and valve rod are also by being welded to connect.This structural strengthening the join strength of valve rod and attachment post.
As preferably, be provided with the first sealing gasket between described valve body and the valve gap, be provided with the second sealing gasket between valve body and the liner clamp, described valve gap is provided with spacing rank, is provided with the limit dais suitable with described spacing rank on the valve body.This structure has guaranteed the sealing of valve body, prevents that simultaneously valve gap from causing sealing gasket to be out of shape inconsistent situation because the moment of torsion control that applies is bad when installation is fastening and occuring, eliminate the hidden danger that leaks outside.
As preferably, described valve seat bottom is connected with valve body screw thread, is provided with sealing gasket between valve seat top and the valve body.This structure is easy for installation, has guaranteed the sealing between valve seat and the valve body.
Therefore, the utlity model has the characteristics of stable performance, non-easy damaged, long service life.
Description of drawings
Accompanying drawing 1 is the structural representation of a kind of single-seat adjusting valve of the utility model.
Accompanying drawing 2 is the structure enlarged diagram of a kind of spacing rank of the utility model and limit dais.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail, obviously, described embodiment only is part embodiment of the present utility model.
Embodiment 1:
Referring to accompanying drawing 1 and accompanying drawing 2, a kind of single-seat adjusting valve of the utility model, comprise valve body 1 and offer the valve gap 5 of central passage 17, be provided with liner clamp 4 between described valve body and the valve gap, described liner clamp 4 centers offer the guide channel 18 coaxial with described central passage 17; Described valve body 1 inner chamber is provided with valve seat 2, described valve seat 2 disposes spool 3, described spool 3 one ends stretch into guide channel 18 and an end of the attachment post 19 that is spirally connected, the other end of described attachment post 19 valve rod 6 that is spirally connected, described valve rod 6 passes central passage 17 and stretches out outside the valve gap, attachment post 19 and valve rod 6 are also by being welded to connect, and soldering point is four, is evenly distributed on the connecting line of valve rod and attachment post upper surface.Be provided with the first sealing gasket 14 between described valve body and the valve gap, be provided with the second sealing gasket 15 between valve body and the liner clamp, described valve gap is provided with spacing rank 21, is provided with the limit dais 22 suitable with described spacing rank 21 on the valve body.Described valve seat bottom is connected with valve body screw thread, is provided with the 3rd sealing gasket 16 between valve seat top and the valve body.
During installation, the conical lower end of spool 3 stretches in the Seal cage of valve seat 2, and the liner clamp 4 of packing into successively, valve gap 5 arrange between valve body 1 and the liner clamp 4 and the first sealing gasket 14 be set with Leakage prevention between the second sealing gasket 15, liner clamp 4 and the valve gap 5.Valve body 1 and valve gap 5 are connected with nut by double-screw bolt 12 and are connected and are fastened to spacing rank 21.By valve gap 5 upper ends pack into successively stuffing box 7, Gland 8, pressing plate 9, be fastened on the valve gap 5 with double-screw bolt 11, nut 10, during fastening nut, note adjusting the straight line motion flexibility of valve rod, and guarantee the sealing of valve gap and valve rod.
During use, the flange by valve body 1 two ends is connected with pipeline and gets final product.
The utility model single-seat adjusting valve, pneumatic or the electric linear-motion actuator that can accept 4mA～20mA standard straight flow control signals drives, make straight-line displacement with movable valve plug and change captured area between spool and the valve seat, by the spool figure curve stable adjusting control is carried out in rate-of flow, pressure, stable, thing position etc.Mainly be applicable to the automation control system than fields such as small pressure difference, the degree of regulation requirement is high, leakage rate is little oil, chemical industry, metallurgy, medication, Utilitiess.
Should be understood that above-described embodiment only is used for explanation the utility model and is not used in the scope of the present utility model that limits.Should be understood that in addition those skilled in the art can make various changes or modifications the utility model after the content of having read the utility model instruction, these equivalent form of values fall within the application's appended claims limited range equally.
Claims (5)
1. single-seat adjusting valve, comprise valve body (1) and offer the valve gap (5) of central passage (17), be provided with liner clamp (4) between described valve body and the valve gap, described liner clamp (4) center offers the guide channel (18) coaxial with described central passage (17); Described valve body (1) inner chamber is provided with valve seat (2), described valve seat (2) disposes spool (3), described spool (3) one ends stretch into guide channel (18) and connect an end of valve rod (6), the other end of described valve rod (6) passes central passage (17) and stretches out outside the valve gap, it is characterized in that: be provided with attachment post (19) between described valve rod and the spool, described attachment post (19) is threaded with spool.
2. single-seat adjusting valve according to claim 1, it is characterized in that: described attachment post (19) is threaded with valve rod (6).
3. single-seat adjusting valve according to claim 2 is characterized in that: described attachment post (19) and valve rod (6) are also by being welded to connect.
4. single-seat adjusting valve according to claim 1, it is characterized in that: be provided with the first sealing gasket (14) between described valve body and the valve gap, be provided with the second sealing gasket (15) between valve body and the liner clamp, described valve gap is provided with spacing rank (21), is provided with the limit dais (22) suitable with described spacing rank (21) on the valve body.
5. single-seat adjusting valve according to claim 1, it is characterized in that: described valve seat bottom is connected with valve body screw thread, is provided with the 3rd sealing gasket (16) between valve seat top and the valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220520817 CN202867863U (en) | 2012-10-12 | 2012-10-12 | Single-seat regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220520817 CN202867863U (en) | 2012-10-12 | 2012-10-12 | Single-seat regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202867863U true CN202867863U (en) | 2013-04-10 |
Family
ID=48034585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220520817 Expired - Fee Related CN202867863U (en) | 2012-10-12 | 2012-10-12 | Single-seat regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202867863U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109506001A (en) * | 2018-12-03 | 2019-03-22 | 四川鹿台科技有限公司 | A kind of novel protection against erosion compensation flap |
-
2012
- 2012-10-12 CN CN 201220520817 patent/CN202867863U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109506001A (en) * | 2018-12-03 | 2019-03-22 | 四川鹿台科技有限公司 | A kind of novel protection against erosion compensation flap |
| CN109506001B (en) * | 2018-12-03 | 2020-03-31 | 四川鹿台科技有限公司 | Novel anti-scouring balance valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130410 Termination date: 20171012 |