CN202188147U - Valve rod - Google Patents
Valve rod Download PDFInfo
- Publication number
- CN202188147U CN202188147U CN2011202273359U CN201120227335U CN202188147U CN 202188147 U CN202188147 U CN 202188147U CN 2011202273359 U CN2011202273359 U CN 2011202273359U CN 201120227335 U CN201120227335 U CN 201120227335U CN 202188147 U CN202188147 U CN 202188147U
- Authority
- CN
- China
- Prior art keywords
- seal plug
- swingle
- shrinkage pool
- valve rod
- rotating rod
- 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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- Lift Valve (AREA)
- Taps Or Cocks (AREA)
Abstract
The utility model discloses a valve rod which comprises a rotating rod and a seal plug. The valve rod is characterized in that the rotating rod and the seal plug are in a split structure, the rotating rod can rotate relative to the seal plug, and at least one end surface leading the seal plug to be pressed downwards is arranged on the rotating rod. In the utility model, the rotation of the rotating rod does not drive the seal plug to rotate, the seal plug is pressed downwards during the process that the rotating rod is screwed downwards so as to lead the seal plug to do vertical movement instead of circular movement, therefore, the abrasion on the conical surface or a sealing opening (valve opening) of the seal plug is reduced, and the service life of the seal plug is greatly improved.
Description
Technical field
The utility model relates to a kind of valve rod, and this valve rod can be applicable on the products such as cutting tool, flowmeter.
Background technique
In cutting products such as tool, flowmeter, be provided with a valve rod, described valve rod be mainly used in through with the cooperating of valve opening, thereby realize that the sealing throttling of product and flow finely tune.
Current valve rod is as shown in Figure 4; This valve rod comprises swingle and seal plug, and described swingle and seal plug are structure as a whole, and mainly there is following deficiency in this valve rod: 1) because the influence of processing technique and process equipment; The circle of seal plug portion is beated and is difficult to guarantee with coaxality; Sealing effect is not good enough, makes the after-sales service amount of product very big, causes great manpower, financial resources waste; 2) in use; Seal plug and sealed mouth (valve opening) are done the circumference friction; Because the user is for reaching the overweight valve rod of screwing of better seal effect, very easily cause the heavy wear of seal plug or sealed mouth (valve opening), cause the sealing difficulty and make product rejection; 3) the valve opening material hardness has just with the good of material, and difficult more along with the reduction of material hardness when making the sealing of valve rod and these material fit, valve rod has limited the application development of low-durometer material.
Summary of the invention
The utility model is to deficiency of the prior art, and a kind of valve rod of not easy to wear, long service life is provided.
In order to solve the problems of the technologies described above, the utility model is able to solve through following technical proposals: a kind of valve rod, comprise swingle and seal plug, and it is characterized in that said swingle and seal plug are for dividing body structure, this swingle can relatively rotate with seal plug.
In the technique scheme, the lower end of said swingle is provided with first shrinkage pool, and said seal plug is located in this first shrinkage pool, and the end of said first shrinkage pool is narrow contracting inwardly.
In the technique scheme, the roof of said first shrinkage pool is provided with second shrinkage pool, and the upper-end surface of said seal plug is provided with the 3rd shrinkage pool, is provided with rotating sphere in said second shrinkage pool and the 3rd shrinkage pool.
In the technique scheme, said swingle is that face contacts with seal plug, and said swingle is or/and the end face of seal plug contact is the narrow face that contracts.
In the technique scheme, the outer side wall of the lower end of said swingle also is provided with a narrow portion of contracting.
Beneficial effect: the utility model compared with prior art; Have following beneficial effect: 1) the utility model swingle rotates, and does not drive seal plug and rotates, and seal plug is pressed down in the process that swingle is down twisted; Thereby make seal plug only move up and down; And do not make circular movement, and reduced the wearing and tearing of the seal plug conical surface or sealed mouth (valve opening), greatly improved the working life of seal plug.
2) the utility model: in seal process; Owing to have certain free gap diametrically between swingle, rotating sphere, the seal plug; Thereby it is self-align that seal plug can be realized, greatly eliminated the morpheme error owing to the conical surface in the course of working and main body, makes sealing more reliable.
3) the utility model in use; Because the conical surface of seal plug is done compressing of axial direction for a long time to sealed mouth (valve opening) and is loosened; Played grinding virtually, thereby made sealed mouth (valve opening) degree of finish increasingly high, helped sealing more sealed mouth (valve opening); Reduced requirement, stopped in use to take place the phenomenon of leakage basically the valve opening material hardness.
Description of drawings
Fig. 1 is installed on the structural representation of cutting torch for the utility model.
Fig. 2 is the utility model embodiment one a structural representation.
Fig. 3 is the utility model embodiment two a structural representation.
Fig. 4 is the structural representation of valve rod in the existing technology.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail: embodiment one; See Fig. 1～Fig. 2, a kind of valve rod comprises swingle 1; The upper end of said swingle 1 is provided with knob 7; This swingle 1 is twisted through the outside thread that is provided with on its sidewall and is located on the handle of cutting torch, during turning knob 7, can make swingle 1 rise or descend with respect to the cutting torch handle.
The lower end of said swingle 1 is provided with first shrinkage pool 10, is equipped with seal plug 3 in this first shrinkage pool 10, and described seal plug 3 can upper and lower slippage in first shrinkage pool 10.The roof of said first shrinkage pool 10 is provided with second shrinkage pool 12, and the upper-end surface of said seal plug 3 is provided with the 3rd shrinkage pool 30, is provided with rotating sphere 5 in said second shrinkage pool 12 and the 3rd shrinkage pool 30.Between swingle 1 and seal plug 3, rotating sphere 5 is arranged; Can reduce the frictional force between swingle 1 and the seal plug 3 greatly; When swingle 1 rotated, seal plug 3 was difficult for can only under the effect of swingle 1, moving in Vertical direction along with swingle 1 rotates like this.
The outer side wall of the lower end of said swingle 1 also is provided with a narrow portion 14 of contracting, and is provided with the past easily interior contraction in lower end (concrete working principle details below) that the narrow portion 14 of contracting can make swingle 1.
During installation, rotating sphere 5 is placed in the 3rd shrinkage pool 30 of seal plug 3 upper ends, then seal plug 3 is penetrated in first shrinkage pool 10, and make the upper end of rotating sphere 5 be positioned at second shrinkage pool 12.Then the narrow portion 14 of contracting of swingle 1 lower end is inserted in the sleeve, beat swingle 1 gently, swingle 1 is moved down, the narrow portion 14 of contracting is inwardly shunk the lower end of swingle 1 by the sleeve extruding, prevents that seal plug 3 breaks away from swingle 1.
During use, turning knob 7 makes down slippage of swingle 1; Because be provided with rotating sphere 5 between swingle 1 and the seal plug 3, the frictional force between swingle 1 and the seal plug 3 is less, swingle 1 rotates like this; Not driving seal plug 3 rotates; Seal plug 3 is pressed down in the process that swingle 1 is down twisted, thereby makes 3 of seal plugs move up and down, and does not make circular movement; The wearing and tearing of seal plug 3 conical surfaces or sealed mouth (valve opening) have been reduced, the working life of greatly having improved seal plug 3.
In addition; The utility model also has other one big advantage: in seal process; Owing to have certain free gap diametrically between swingle 1, rotating sphere 5, the seal plug 3; Thereby it is self-align that seal plug 3 can be realized, greatly eliminated the morpheme error owing to the conical surface in the course of working and main body, makes sealing more reliable.
In addition; The utility model in use because the conical surface of seal plug 3 is done compressing of axial direction for a long time to sealed mouth 9 (valve opening) and loosened, has played the grinding to sealed mouth 9 (valve opening) virtually; Thereby make sealed mouth 9 (valve opening) degree of finish increasingly high; Help sealing more, reduced requirement, stopped in use to take place the phenomenon of leakage basically the valve opening material hardness.
Embodiment two, compare with embodiment one, difference only is that the roof of said first shrinkage pool 10 directly contacts with seal plug 3 upper-end surfaces.The upper-end surface of said seal plug 3 is a narrow face 32 that contracts, thereby when the roof of the shrinkage pool 10 of winning was contacted with seal plug 3 upper-end surfaces, frictional force was less, thereby makes when swingle 1 rotates, and seal plug 3 is along with rotating together.Being appreciated that also can be at the narrow face 16 that contracts that is provided with of the roof of said first shrinkage pool 10, as long as when the roof of first shrinkage pool 10 is contacted with seal plug 3 upper-end surfaces, frictional force is less to get final product.
Claims (5)
1. a valve rod comprises swingle (1) and seal plug (3), it is characterized in that, said swingle (1) is the branch body structure with seal plug (3), and this swingle (1) can relatively rotate with seal plug (3).
2. valve rod as claimed in claim 1 is characterized in that, the lower end of said swingle (1) is provided with first shrinkage pool (10), and said seal plug (3) is located in this first shrinkage pool (10), and the end of said first shrinkage pool (10) is narrow contracting inwardly.
3. valve rod as claimed in claim 2; It is characterized in that; The roof of said first shrinkage pool (10) is provided with second shrinkage pool (12); The upper-end surface of said seal plug (3) is provided with the 3rd shrinkage pool (30), is provided with rotating sphere (5) in said second shrinkage pool (12) and the 3rd shrinkage pool (30).
4. valve rod as claimed in claim 2 is characterized in that, said swingle (1) and seal plug (3) are for face contacts, and said swingle (1) is or/and the end face of seal plug (3) contact is the narrow face that contracts.
5. valve rod as claimed in claim 2 is characterized in that, the outer side wall of the lower end of said swingle (1) also is provided with a narrow portion of contracting (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202273359U CN202188147U (en) | 2011-06-30 | 2011-06-30 | Valve rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202273359U CN202188147U (en) | 2011-06-30 | 2011-06-30 | Valve rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202188147U true CN202188147U (en) | 2012-04-11 |
Family
ID=45919599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202273359U Expired - Fee Related CN202188147U (en) | 2011-06-30 | 2011-06-30 | Valve rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202188147U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747796A (en) * | 2015-02-10 | 2015-07-01 | 杭州电子科技大学 | Valve rod and valve bush of turbine regulating valve |
-
2011
- 2011-06-30 CN CN2011202273359U patent/CN202188147U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747796A (en) * | 2015-02-10 | 2015-07-01 | 杭州电子科技大学 | Valve rod and valve bush of turbine regulating 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 |
Granted publication date: 20120411 Termination date: 20150630 |
|
| EXPY | Termination of patent right or utility model |