CN215861982U - Flexibly connected valve rod needle head - Google Patents
Flexibly connected valve rod needle head Download PDFInfo
- Publication number
- CN215861982U CN215861982U CN202122131142.XU CN202122131142U CN215861982U CN 215861982 U CN215861982 U CN 215861982U CN 202122131142 U CN202122131142 U CN 202122131142U CN 215861982 U CN215861982 U CN 215861982U
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- China
- Prior art keywords
- valve rod
- syringe needle
- needle
- steel ball
- needle head
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Abstract
The utility model discloses a flexibly connected valve rod needle head, which comprises: the transmission screw thread, bottom fixedly connected with valve rod, the one end that the transmission screw thread was kept away from to the valve rod is connected with syringe needle, and inside swing joint has the steel ball, the steel ball is the annular at the inner wall of syringe needle and distributes, and the end cap, gomphosis are in the inside of syringe needle, and are riveting connection structure between end cap and the syringe needle. This flexonics's valve rod syringe needle docks valve rod and syringe needle, passes the syringe needle with the steel ball again, makes the steel ball place in the junction of valve rod and syringe needle, docks end cap and syringe needle again, later fixes the end cap inside the syringe needle through the mode of fine welding for 360 rotations carry out between valve rod accessible steel ball and the syringe needle, thereby avoid traditional part to lead to the valve rod card to die easily through the cooperation between the disalignment or the fracture.
Description
Technical Field
The utility model relates to the technical field of valve rod needle heads, in particular to a flexibly connected valve rod needle head.
Background
The valve rod is not only a moving part and a stressed part but also a sealing part in the opening and closing process of the valve. At the same time, it is impacted and corroded by the media and also rubs against the filler.
If patent 201620306791.5 an antirust and wear-resistant valve rod, including the body of rod, body of rod one end is equipped with the screw thread section of connecting the case, and the body of rod other end is equipped with the fixed part that is used for fixed hand wheel, fixed part terminal surface center is equipped with the oil filler point, is equipped with the oil outlet with the oil filler point intercommunication on the body of rod circumference. The rust-proof wear-resistant valve rod can better improve the rust-proof wear-resistant capability of the valve rod.
This prior art solution also presents the following problems when in use:
1. when the parts are used, a valve rod of the valve is easy to clamp or break, so that the whole valve is damaged, and a series of maintenance at the later stage is further caused, and the service life of the valve rod can influence the service life of the whole valve;
2. the friction force between the valve rod and the needle head is large when the valve rod and the needle head rotate, so that the flexibility of the valve rod and the needle head when the valve rod and the needle head rotate is reduced.
Improvements are needed to address the above issues to meet market demands.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a flexibly connected valve rod needle head to solve the problems that the valve rod is easy to clamp or break off when parts are used, the whole valve is damaged, a series of maintenance is further caused in the later period, and the service life of the valve rod can influence the service life of the whole valve.
In order to achieve the purpose, the utility model provides the following technical scheme: a flexibly linked valve stem needle comprising:
the bottom of the transmission thread is fixedly connected with a valve rod, and one end of the valve rod, which is far away from the transmission thread, is connected with a needle head;
the needle head is movably connected with a steel ball inside, and the steel ball is annularly distributed on the inner wall of the needle head;
the plug is embedded in the needle head, and a riveting connection structure is arranged between the plug and the needle head.
Preferably, the material of syringe needle is carbide, and the recess of caving in is seted up at the top of syringe needle to the size and the valve rod bottom surface size phase-match of syringe needle top recess, through above-mentioned structure, be convenient for dock syringe needle and valve rod.
Preferably, the bottom of valve rod is connected with the sphere, the sphere is the arc structure, and the sphere is tangent with the top surface of syringe needle, and through above-mentioned structure, the sphere reduces the frictional force that valve rod and syringe needle are connected.
Preferably, steel ball surface swing joint has the valve rod, and the steel ball plays the effect with syringe needle and valve rod chucking location, the valve rod passes through and can form 360 rotations between steel ball and the syringe needle, and through above-mentioned structure, the steel ball is with syringe needle and valve rod chucking location.
Preferably, the choke plug and the needle head are fixed through a fiber welding mode, and the choke plug is fixed inside the needle head through the structure.
Compared with the prior art, the utility model has the beneficial effects that: this flexonics's valve rod syringe needle is provided with the steel ball, docks valve rod and syringe needle, passes the syringe needle with the steel ball again, makes the steel ball place in the junction of valve rod and syringe needle, docks end cap and syringe needle again, later fixes the end cap inside the syringe needle through the mode of fine welding to make more nimble when the valve rod passes through the syringe needle and rotates.
1. Butt joint valve rod and syringe needle, pass the syringe needle with the steel ball again, make the steel ball place the junction at valve rod and syringe needle, dock end cap and syringe needle again, later fix the end cap inside the syringe needle through the mode of fine welding for 360 rotations are carried out between valve rod accessible steel ball and the syringe needle, thereby avoid traditional part to lead to the valve rod card to die easily through the cooperation between the disalignment or fracture.
2. When the valve rod and the needle head are matched to rotate, the friction force generated when the valve rod and the needle head rotate is reduced by the contact mode of tangency between the spherical surface and the needle head, so that the valve rod is more flexible and convenient to rotate.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic cross-sectional front view of the present invention;
fig. 3 is a front sectional view of the needle of the present invention.
In the figure: 1. a drive screw; 2. a valve stem; 3. a needle head; 4. spherical surface; 5. a steel ball; 6. and (7) a plug.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: a flexibly linked valve stem needle comprising:
The material of syringe needle 3 is carbide, and the recess that caves in is seted up at the top of syringe needle 3 to the size and the 2 bottom surface size phase-matchs of valve rod of 3 top recesses of syringe needle, the bottom of valve rod 2 is connected with sphere 4, sphere 4 is the arc structure, and sphere 4 is tangent with the top surface of syringe needle 3, and when the cooperation was rotated between valve rod 2 and syringe needle 3, produced frictional force when tangent contact mode between sphere 4 and the syringe needle 3 reduced rotating between valve rod 2 and the syringe needle 3, thereby more nimble convenience when making valve rod 2 rotate.
5 surface swing joint of steel ball has valve rod 2, and 5 plays the effect with 2 chucking location of syringe needle 3 and valve rod, valve rod 2 can form 360 rotations through between steel ball 5 and the syringe needle 3, it is fixed through the fiber welding mode between end cap 6 and the syringe needle 3, dock valve rod 2 and syringe needle 3, pass syringe needle 3 with steel ball 5 again, make steel ball 5 place the junction at valve rod 2 and syringe needle 3, dock end cap 6 and syringe needle 3 again, later fix end cap 6 inside syringe needle 3 through the mode of fiber welding, make and carry out 360 rotations between 2 accessible steel balls of valve rod 5 and the syringe needle 3, thereby avoid traditional part to lead to valve rod 2 card to die or the fracture easily through the cooperation between the disalignment.
The working principle is as follows: as shown in fig. 1-3, when the flexibly connected valve rod needle is used, firstly, the valve rod 2 is butted with the needle 3, then the steel ball 5 passes through the needle 3, the steel ball 5 is placed at the joint of the valve rod 2 and the needle 3, then the plug 6 is butted with the needle 3, and then the plug 6 is fixed inside the needle 3 in a fiber welding manner, so that the valve rod 2 can rotate 360 degrees through the steel ball 5 and the needle 3, thereby avoiding the phenomenon that the valve rod 2 is stuck or broken easily due to the matching of traditional parts between different shafts, which is the working principle of the flexibly connected valve rod needle.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A flexibly connected valve stem needle, comprising:
the bottom of the transmission thread (1) is fixedly connected with a valve rod (2), and one end, far away from the transmission thread (1), of the valve rod (2) is connected with a needle head (3);
the needle head (3) is movably connected with a steel ball (5) inside, and the steel ball (5) is annularly distributed on the inner wall of the needle head (3);
the plug (6) is embedded in the needle head (3), and a riveting connection structure is formed between the plug (6) and the needle head (3).
2. The flexibly connected valve rod needle head as claimed in claim 1, wherein the needle head (3) is made of hard alloy, the top of the needle head (3) is provided with a concave groove, and the size of the concave groove at the top of the needle head (3) is matched with the size of the surface at the bottom of the valve rod (2).
3. A flexibly connected valve stem needle according to claim 1, wherein the bottom of the valve stem (2) is connected with a spherical surface (4), the spherical surface (4) is of an arc structure, and the spherical surface (4) is tangent to the top surface of the needle (3).
4. A flexibly connected valve rod needle head according to claim 1, wherein the valve rod (2) is movably connected to the surface of the steel ball (5), the steel ball (5) is used for clamping and positioning the needle head (3) and the valve rod (2), and the valve rod (2) can rotate 360 degrees with the needle head (3) through the steel ball (5).
5. A flexibly connected valve stem needle as claimed in claim 1, wherein the plug (6) and the needle (3) are fixed by means of soldering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122131142.XU CN215861982U (en) | 2021-09-06 | 2021-09-06 | Flexibly connected valve rod needle head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122131142.XU CN215861982U (en) | 2021-09-06 | 2021-09-06 | Flexibly connected valve rod needle head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215861982U true CN215861982U (en) | 2022-02-18 |
Family
ID=80246535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122131142.XU Active CN215861982U (en) | 2021-09-06 | 2021-09-06 | Flexibly connected valve rod needle head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215861982U (en) |
-
2021
- 2021-09-06 CN CN202122131142.XU patent/CN215861982U/en active Active
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