CN101328978A - Half-type connecting apparatus of needle type throttling valve - Google Patents
Half-type connecting apparatus of needle type throttling valve Download PDFInfo
- Publication number
- CN101328978A CN101328978A CNA2008100212531A CN200810021253A CN101328978A CN 101328978 A CN101328978 A CN 101328978A CN A2008100212531 A CNA2008100212531 A CN A2008100212531A CN 200810021253 A CN200810021253 A CN 200810021253A CN 101328978 A CN101328978 A CN 101328978A
- Authority
- CN
- China
- Prior art keywords
- hough
- valve rod
- syringe needle
- crossover sub
- adapter
- 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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- Fuel-Injection Apparatus (AREA)
Abstract
The invention discloses a 'half' type connecting device for a needle-type throttle valve. The connecting device is formed by a half (2) and an adapter (3), wherein, a valve rod (4) and a needle head (1) are connected with each other through the half (2) and the adapter (3); the half (2) consists of two halves; a round lug boss inside the half (2) is in snap connection in a groove of the needle head (1); the outside of the half (2) is connected with the adapter (3) through a thread; and the adapter (3) is connected with the valve rod (4) through the thread. The connecting device has the advantages of pure mechanical connection, reliable connection, impact resistance, welding omission of the hard metal needle head, cracking prevention and high joint strength.
Description
Technical field
The present invention relates to connection set, be specifically related to a kind of " Hough " type connection set that is applicable to that valve rod is connected with the cemented carbide syringe needle in the pin type throttle valve.
Background technique
At present, valve rod and cemented carbide syringe needle are most in the pin type throttle valve adopts bearing pin to add brazing to be connected, this mode causes cemented carbide syringe needle cracking when welding easily, the cemented carbide syringe needle fractures especially easily in the using process of oil field, thereby make whole throttle valve shorter working life, valve rod and syringe needle add the difficult unification of axis in man-hour, maintenance difficult.
Summary of the invention
The objective of the invention is to: a kind of " Hough " type connection set of pin type throttle valve is provided, solves valve rod and the anti-fracture of syringe needle, weld cracking problem, improve join strength, prolongation throttle valve working life by this connection set.
Technical solution of the present invention is: this connection set is made of Hough, crossover sub, valve rod and syringe needle interconnect by Hough and crossover sub, Hough is made up of two halves, the boss decometer of Hough inside closes and is connected in the needle recess, the Hough outside is by the crossover sub that is threaded, and crossover sub is by the valve rod that is threaded.
During installation, on the cemented carbide needle recess, be coated with locking glue, fast the Hough engaging be bonded in the needle recess; To coat locking glue on the Hough outside thread again, crossover sub is screwed in the assemblying body of Hough and syringe needle and tightens and put in place by screw thread; At last the head of valve rod is coated locking glue, valve rod by screw fit in crossover sub and tighten, thereby realize being connected of valve rod and syringe needle.
The present invention has the following advantages:
1, this connection set is pure mechanical connection, connects reliably shock resistance.
2, the cemented carbide syringe needle need not welding, can not produce fracture, the join strength height.
3, valve rod and syringe needle add axis unification in man-hour, easy-maintaining.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Among the figure: 1. cemented carbide syringe needle, 2. Hough, 3. crossover sub, 4. valve rod.
Embodiment
As shown in Figure 1, this connection set is made of Hough 2, crossover sub 3, valve rod 4 and syringe needle 1 interconnect by Hough 2 and crossover sub 3, Hough 2 is made up of two halves, the boss decometer of Hough 2 inside closes and is connected in syringe needle 1 groove, Hough 2 outsides are by the crossover sub 3 that is threaded, and crossover sub 3 is by the valve rod 4 that is threaded.
During installation, on cemented carbide syringe needle 1 groove, be coated with locking glue, fast Hough 2 engagings be bonded in recessed 1 groove of syringe needle; To coat locking glue on Hough 2 outside threads again, crossover sub 3 is screwed in the assemblying body of Hough 2 and syringe needle 1 and tightens and put in place by screw thread; At last the head of valve rod 4 is coated locking glue, valve rod 4 by screw fit in crossover sub 3 and tighten, thereby realize being connected of valve rod 4 and syringe needle 1.
Claims (1)
1. " Hough " type connection set of pin type throttle valve, it is characterized in that: this connection set is made of Hough (2), crossover sub (3), valve rod (4) and syringe needle (1) interconnect by Hough (2) and crossover sub (3), Hough (2) is made up of two halves, the inner boss decometer of Hough (2) closes and is connected in syringe needle (1) groove, Hough (2) is outside by the crossover sub that is threaded (3), and crossover sub (3) is by the valve rod that is threaded (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100212531A CN101328978A (en) | 2008-07-23 | 2008-07-23 | Half-type connecting apparatus of needle type throttling valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100212531A CN101328978A (en) | 2008-07-23 | 2008-07-23 | Half-type connecting apparatus of needle type throttling valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101328978A true CN101328978A (en) | 2008-12-24 |
Family
ID=40204929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100212531A Pending CN101328978A (en) | 2008-07-23 | 2008-07-23 | Half-type connecting apparatus of needle type throttling valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101328978A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101566239B (en) * | 2009-05-22 | 2011-01-12 | 苏州新锐硬质合金有限公司 | Valve needle for needle type throttle valve |
| CN101666383B (en) * | 2009-09-16 | 2011-06-08 | 苏州新锐硬质合金有限公司 | Novel valve needle of needle-type throttle valve |
-
2008
- 2008-07-23 CN CNA2008100212531A patent/CN101328978A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101566239B (en) * | 2009-05-22 | 2011-01-12 | 苏州新锐硬质合金有限公司 | Valve needle for needle type throttle valve |
| CN101666383B (en) * | 2009-09-16 | 2011-06-08 | 苏州新锐硬质合金有限公司 | Novel valve needle of needle-type throttle 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 | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20081224 |