CN103032591A - Throttle valve - Google Patents
Throttle valve Download PDFInfo
- Publication number
- CN103032591A CN103032591A CN 201110303943 CN201110303943A CN103032591A CN 103032591 A CN103032591 A CN 103032591A CN 201110303943 CN201110303943 CN 201110303943 CN 201110303943 A CN201110303943 A CN 201110303943A CN 103032591 A CN103032591 A CN 103032591A
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- CN
- China
- Prior art keywords
- valve
- spool
- throttle
- stem
- throttle valve
- 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 relates to a throttle valve, which comprises a valve body, a valve cover, a valve stem and a valve core. The valve cover is fixedly connected with the valve body, the center of the valve cover is provided with the valve stem, the lower end of the valve stem is provided with the valve core, the valve core moves up and down along with rotation of the valve stem and is connected with the inner cavity of the valve body in a sealing way, the upper end of the valve stem is provided with a valve hood, and the valve hood is sleeved on the valve stem and can drive the valve stem to rotate; and a spherical structure is adopted by the end part of the valve core, the inner cavity of the valve body is correspondingly provided with a concave structure matched with the end part of the valve core, the end part of the valve core and the surface of the concave structure are provided with a wear-resistant carburized layer, and the lower end of the valve hood is close to the upper surface of the valve cover. Compared with the prior art, impurities cannot easily enter threads of the valve stem due to the valve hood at the upper end of the valve stem, the throttle valve cannot be easily worn in long-term use due to the wear-resistant carburized layers on the contact surfaces of the valve core and the inner cavity of the valve body, and the service life of the throttle valve is prolonged. Moreover, the throttle valve has the advantages of compact structure, long service life and good sealing effects.
Description
Technical field
The present invention relates to throttle valve, the throttle valve of especially a kind of good sealing effect, long service life.
Background technique
Existing throttle valve generally is comprised of valve body, valve gap, valve rod, handwheel and spool, described valve gap is connected with valve seal and fixes, the valve gap center is equipped with valve rod, the lower end of valve rod is equipped with spool, spool is located between the import and outlet of valve body, spool can rotate with valve rod and move up and down, and is tightly connected with body cavity formation.At present, outside the valve rod of existing throttle valve and the surface of contact of valve gap often are exposed to, there is easily impurity to enter in the screw thread of valve rod, affects the sealing of valve rod; On the other hand, the surface of contact of spool and body cavity also weares and teares because of long-term the use easily, thereby affects the working life of throttle valve.
Summary of the invention
For the deficiency of above existing throttle valve, the purpose of this invention is to provide a kind of valve rod upper end with valve bonnet, the throttle valve of long service life, good sealing effect.
The objective of the invention is by realizing by the following technical solutions:
Throttle valve, comprise valve body, valve gap, valve rod and spool, described valve gap is connected with valve body and fixes, the valve gap center is provided with valve rod, and the lower end of valve rod is provided with spool, and spool is located between the import and outlet of valve body, spool can rotate to move up and down and to form with body cavity with valve rod and be tightly connected, described valve rod and valve gap are flexibly connected by screw thread, and the valve rod upper end is provided with valve bonnet, and valve bonnet is set on the valve rod and can be with ovable valve stem to rotate.
As the preferred technical solution of the present invention, described valve body import and valve outlet coaxial line.
As the preferred technical solution of the present invention, the end of described spool is made as spheric structure, and body cavity is corresponding to be provided with the concave structure suitable with the spool end.
As the preferred technical solution of the present invention, the end of described spool and the surface of described concave structure are provided with wear-resisting carburized case.
As the preferred technical solution of the present invention, the lower end of described valve bonnet is near the upper surface of valve gap.
As the preferred technical solution of the present invention, the import of described valve body and outlet are respectively equipped with the flange fillet.
The invention has the beneficial effects as follows: with respect to prior art, the upper end of valve rod of the present invention is with valve bonnet, and impurity etc. are difficult for entering in the screw thread of valve rod, and the surface of contact of spool and body cavity is provided with wear-resisting carburized case, long-term use is not easy to wear yet, thus the working life of having improved throttle valve.Compact structure of the present invention, long service life, good sealing effect.
Description of drawings
The invention will be further described below in conjunction with accompanying drawing and specific embodiment:
Fig. 1 is structural representation of the present invention.
Embodiment
As shown in Figure 1, throttle valve, comprise valve body 1, valve gap 2, valve rod 3 and spool 5, described valve gap 2 is tightly connected with valve body 1 and fixes, and valve gap 2 centers are provided with valve rod 3, the lower end of valve rod 3 is provided with spool 5, spool 5 is located at the import 11 of valve body and exports between 12, and spool 5 can rotate to move up and down and form with body cavity with valve rod 5 and be tightly connected, and described valve rod 3 is flexibly connected by screw thread with valve gap 2, valve rod 3 upper ends are provided with valve bonnet 4, and valve bonnet 4 is set on the valve rod 3 and can be with ovable valve stem 3 to rotate.
In the present embodiment, described valve body import 11 and valve outlet 12 coaxial lines, the end of described spool 5 is made as spheric structure, and body cavity is corresponding to be provided with the concave structure 6 suitable with the spool end, and the surface of the end of spool 5 and described concave structure 6 is provided with wear-resisting carburized case.The lower end of the described valve bonnet 4 of present embodiment is near the upper surface of valve gap 2, and import 11 and the outlet 12 of described valve body are respectively equipped with flange fillet 13.
Claims (6)
1. throttle valve, comprise valve body, valve gap, valve rod and spool, described valve gap is connected with valve body and fixes, the valve gap center is provided with valve rod, and the lower end of valve rod is provided with spool, and spool is located between the import and outlet of valve body, spool can rotate to move up and down and to form with body cavity with valve rod and be tightly connected, it is characterized in that: described valve rod and valve gap are flexibly connected by screw thread, and the valve rod upper end is provided with valve bonnet, and valve bonnet is set on the valve rod and can be with ovable valve stem to rotate.
2. throttle valve according to claim 1 is characterized in that: described valve body import and valve outlet coaxial line.
3. throttle valve according to claim 2, it is characterized in that: the end of described spool is made as spheric structure, and body cavity is corresponding to be provided with the concave structure suitable with the spool end.
4. throttle valve according to claim 3, it is characterized in that: the end of described spool and the surface of described concave structure are provided with wear-resisting carburized case.
5. throttle valve according to claim 1 is characterized in that: the upper surface of the close valve gap in the lower end of described valve bonnet.
6. throttle valve according to claim 1, it is characterized in that: the import of described valve body and outlet are respectively equipped with the flange fillet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110303943 CN103032591A (en) | 2011-10-08 | 2011-10-08 | Throttle valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110303943 CN103032591A (en) | 2011-10-08 | 2011-10-08 | Throttle valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103032591A true CN103032591A (en) | 2013-04-10 |
Family
ID=48019813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110303943 Pending CN103032591A (en) | 2011-10-08 | 2011-10-08 | Throttle valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103032591A (en) |
-
2011
- 2011-10-08 CN CN 201110303943 patent/CN103032591A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130410 |