CN203703181U - Needle-shaped valve plug - Google Patents
Needle-shaped valve plug Download PDFInfo
- Publication number
- CN203703181U CN203703181U CN201420000710.XU CN201420000710U CN203703181U CN 203703181 U CN203703181 U CN 203703181U CN 201420000710 U CN201420000710 U CN 201420000710U CN 203703181 U CN203703181 U CN 203703181U
- Authority
- CN
- China
- Prior art keywords
- needle
- closure member
- conical head
- shaped valve
- needle plug
- 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
- 239000012530 fluid Substances 0.000 claims abstract description 14
- 229920000297 Rayon Polymers 0.000 claims description 5
- 239000003292 glue Substances 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 claims description 4
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Abstract
The utility model discloses a needle-shaped valve plug. The needle-shaped valve plug comprises a tapered head, a connecting member and a closure member made of cemented carbide. One end of the connecting member is fixed on the tapered head and the other end of the connecting member is fixedly connected with a valve rod. The closure member is fixed between the tapered head and the valve rod via the connecting member. When fluid is intercepted, the outer surface of the closure member and the inner surface of a valve seat are sealed in a matching mode. The needle-shaped valve plug has following beneficial effects: rigidity, strength and toughness of the needle-shaped valve plug are improved; impact resistance of the needle-shaped valve plug is also enhanced; and the purpose of prolonging service lifetime of the needle-shaped valve is fulfilled.
Description
Technical field
The utility model relates to a kind of needle-valve, relates in particular to a kind of needle plug.
Background technique
Needle-valve is a kind of reset valve, and its valve plug is aciculiform, is conventionally made up of steel, and needle plug coordinates with valve seat can block or regulate fluid flow, and convection cell is realized trickle adjusting continuously.In the time that valve rod drives needle plug to move to valve seat direction, needle plug coordinates and is becoming tight with valve base chamber, and the sectional area of fluid output diminishes, and fluid flow diminishes thereupon.In the time that needle plug and valve base chamber closely cooperate, fluid flow is truncated.In the time that valve rod drives needle plug to depart from valve seat, needle plug and the pine that also becomes coordinating of valve base chamber, thus the sectional area of fluid output increases, and fluid flow increases thereupon.But in actual use, because the impact force of pipeline inner fluid is very large, and the toughness of the needle plug of being made up of steel is poor, needle plug is not only easily fracture under the impact of fluid, also easily deform, not only cause the working life of needle-valve short, also cause there is gap between needle plug and valve seat, can not effectively block fluid.
Model utility content
The purpose of this utility model is to overcome the above-mentioned problems in the prior art, a kind of needle plug is provided, the utility model can strengthen rigidity intensity and the toughness of needle plug, improves the impact resistance of needle plug, reaches and extends the needle-valve object in working life.
For achieving the above object, the technical solution adopted in the utility model is as follows:
A kind of needle plug, it is characterized in that: comprise conical head, link and the closure member of being made by cemented carbide, one end of described link is fixed on conical head, the other end is fixedly connected with valve rod, described closure member is fixed between conical head and valve rod by link, while blocking fluid, the internal surface fitted seal of the outer surface of described closure member and valve seat.
Described link is that integral type is arranged on the connecting rod on conical head, and described closure member middle part is provided with attachment hole, and described connecting rod is connected with threaded stem through after attachment hole.
The joint of described closure member and conical head is provided with viscose glue.
Employing the utility model has the advantage of:
One, in the utility model, the closure member that is mainly used in blocking fluid adopts cemented carbide to make, and closure member is fixed between conical head and valve rod by link, this structural reinforcing rigidity intensity and the toughness of needle plug, significantly improve the impact resistance of needle plug, make whole needle plug can bear larger impact force, permanent use is also not easy deformation and fracture; In addition, because needle plug is indeformable, the better tightness while damming between needle plug and valve seat, causes the effect of damming also better, is conducive to extend the working life of needle-valve.
Two, in the utility model, described link is that integral type is arranged on the connecting rod on conical head, described closure member middle part is provided with attachment hole, described connecting rod is connected with threaded stem through after attachment hole, and in this structure, valve rod and connecting rod can play the role of fastening to closure member, closure member and conical head are combined closely, the overall steadiness that ensures needle plug is better, and meanwhile, this structure also makes the I&M of needle plug more convenient.
Three, in the utility model, the joint of described closure member and conical head is provided with viscose glue, by viscose glue, conical head and closure member can closely be linked together, and further improves whole needle plug stability in use.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Being labeled as in figure: 1, link, 2, closure member, 3, valve rod, 4, conical head.
Embodiment
A kind of needle plug, comprise conical head 4, link 1 and the closure member 2 of being made by cemented carbide, one end of described link 1 is fixed on conical head 4, the other end is fixedly connected with valve rod 3, described closure member 2 is fixed between conical head 4 and valve rod 3 by link 1, while blocking fluid, the internal surface fitted seal of the outer surface of described closure member 2 and valve seat.
Preferred implementation of the present utility model is, described link 1 is connecting rod, and described connecting rod and conical head 4 are one-body molded, the attachment hole that described closure member 2 middle parts offer and connecting rod external diameter size is suitable, and described connecting rod is threaded with valve rod 3 through after attachment hole.After needle plug has been connected with valve rod 3, the surperficial close contact of valve rod 3 ends and closure member 2, prevents that closure member 2 is shifted.But be not limited to above-mentioned preferred implementation, for example, the quantity of described connecting rod can be many.
Another preferred implementation of the present utility model is, in order to improve stability and the impact resistance of whole needle plug, is provided with viscose glue in described closure member 2 and the joint of conical head 4, makes closure member 2 be connected closelyr with conical head 4.
In the utility model, the outer surface of described closure member 2 preferably with the outer surface rounding off of conical head 4.
In the utility model, described closure member 2 adopts cemented carbide to make, described conical head 4 and contiguous block are made up of steel, coordinate the closure member 2 sealing to adopt cemented carbide manufacture with valve seat owing to only having, therefore both ensured rigidity intensity and the toughness of needle plug, ensured again that the cost of whole needle plug was comparatively cheap.
Claims (3)
1. a needle plug, it is characterized in that: comprise conical head (4), link (1) and the closure member (2) of being made by cemented carbide, one end of described link (1) is fixed on conical head (4), the other end is fixedly connected with valve rod (3), described closure member (2) is fixed between conical head (4) and valve rod (3) by link (1), while blocking fluid, the outer surface of described closure member (2) and the internal surface fitted seal of valve seat.
2. a kind of needle plug as claimed in claim 1, it is characterized in that: described link (1) is arranged on the connecting rod on conical head (4) for integral type, described closure member (2) middle part is provided with attachment hole, and described connecting rod is threaded with valve rod (3) through after attachment hole.
3. a kind of needle plug as claimed in claim 1 or 2, is characterized in that: described closure member (2) is provided with viscose glue with the joint of conical head (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420000710.XU CN203703181U (en) | 2014-01-02 | 2014-01-02 | Needle-shaped valve plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420000710.XU CN203703181U (en) | 2014-01-02 | 2014-01-02 | Needle-shaped valve plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203703181U true CN203703181U (en) | 2014-07-09 |
Family
ID=51053626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420000710.XU Expired - Fee Related CN203703181U (en) | 2014-01-02 | 2014-01-02 | Needle-shaped valve plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203703181U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108488394A (en) * | 2018-05-03 | 2018-09-04 | 温州职业技术学院 | A kind of biconial fluid pressure type valve |
-
2014
- 2014-01-02 CN CN201420000710.XU patent/CN203703181U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108488394A (en) * | 2018-05-03 | 2018-09-04 | 温州职业技术学院 | A kind of biconial fluid pressure type 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: 20140709 |