CN216951765U - High-precision mirror grinding valve ball - Google Patents
High-precision mirror grinding valve ball Download PDFInfo
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- CN216951765U CN216951765U CN202220775246.6U CN202220775246U CN216951765U CN 216951765 U CN216951765 U CN 216951765U CN 202220775246 U CN202220775246 U CN 202220775246U CN 216951765 U CN216951765 U CN 216951765U
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- pin
- positioning seat
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Abstract
The utility model discloses a high-precision mirror grinding valve ball body which comprises a valve rod, a valve ball, a pin, a positioning seat and steel balls, wherein a rectangular groove with a medium channel central line in parallel symmetry is arranged at the upper part of the spherical surface of the valve ball, a flat end part matched with the width of the rectangular groove is arranged at one end of the valve rod and is embedded into the rectangular groove of the valve ball, the valve ball is connected with the valve rod through the pin, a circular boss is arranged at the center of the lower part of the spherical surface of the valve ball and is in clearance fit with a central hole of the positioning seat, a plurality of steel balls are arranged between the circular boss at the lower part of the spherical surface of the valve ball and the positioning seat, the valve ball and the steel balls are in rolling fit, and the valve rod and the circular boss of the valve ball are on the same axial line. According to the technical scheme, the reduction of ball valve parts and the reduction of assembly difficulty are realized, the related structures of the end cover at the lower part of the ball valve and the valve body are reduced, and the problems of complex structure and high assembly difficulty of the ball valve are solved.
Description
Technical Field
The utility model relates to a ball valve, in particular to a high-precision mirror-surface grinding valve ball.
Background
The ball valve is driven by the valve rod and rotates around the axis of the ball valve to realize opening and closing functions, and has the characteristics of good wear resistance, superior sealing performance, light opening and closing, long service life and the like, and is widely applied. In a common ball valve, a handle drives a valve rod to rotate, the valve rod drives a valve ball to rotate, and the valve ball is in sealing fit with a ball seat to open and close a medium channel. In the assembling process, a valve body, a valve seat, a valve ball and the like are assembled firstly, and finally a valve rod, a packing seal, a packing pressing sleeve and a handle are assembled; the valve ball is generally processed into the cooperation of an arc-shaped wide groove and an arc-shaped flat head on the valve rod, the cooperation of the two has a larger swing range, a positioning shaft sleeve and an end cover need to be added on the lower part of the valve ball, the structure is complex, and the assembly difficulty is large.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provide a high-precision mirror-polished valve ball.
The technical scheme includes that the high-precision mirror grinding valve ball body comprises a valve rod, a valve ball, a pin, a positioning seat and steel balls, wherein a rectangular groove which is parallel and symmetrical to the central line of a medium channel is formed in the upper portion of the spherical surface of the valve ball, a flat end portion which is matched with the width of the rectangular groove is arranged at one end of the valve rod and is embedded into the rectangular groove of the ball valve, the valve ball is connected with the valve rod through the pin, a circular boss is arranged in the center of the lower portion of the spherical surface of the valve ball and is in clearance fit with the central hole of the positioning seat, the steel balls are arranged between the circular boss and the positioning seat on the lower portion of the spherical surface of the valve ball, the valve ball and the circular boss of the valve ball are arranged on the same axial line, and the surface of the valve ball is formed through high-precision mirror grinding.
According to the technical scheme, the reduction of ball valve parts and the reduction of assembly difficulty are realized, the end cover at the lower part of the valve ball and the related structure of the valve body are reduced, the valve body, the valve rod, the handle and other parts can be combined together during assembly, then the assembly of the valve ball, the positioning seat and the steel ball is installed, the valve ball and the valve rod are connected through the reloading pin, the valve seat is reloaded, the assembly of the ball valve is completed, and the problems that the ball valve is complex in structure and large in assembly difficulty are solved.
The valve ball and the pin for connecting the valve rod are arranged in the middle of the symmetrical surface of the arc-shaped surface of the rectangular groove and penetrate through one side or two sides of the groove, and the valve ball is in interference fit with the pin.
The hole that the valve rod is connected with the valve ball is a waist round hole, the center of the waist round hole corresponds to the pin hole on the valve ball, and the valve rod is in clearance fit with the pin.
The pin for connecting the valve ball and the valve rod is an elastic cylindrical pin.
The technical scheme realizes reliable connection of the valve ball and the valve rod, and ensures the reliability of ball valve driving.
The size of the spherical surface of the end part of the circular boss of the valve ball is consistent with that of the spherical surfaces of other parts.
The valve body is characterized by further comprising a valve body, the plane portion of the positioning seat is matched with the valve ball, the arc surface of the positioning seat is matched with the valve body, the positioning seat is arranged in the cavity of the valve body, and a steel ball containing cavity is formed in the periphery of the center hole of the positioning seat.
And a steel ball groove is formed around the circular boss of the valve ball, and corresponds to the steel ball containing cavity of the positioning seat.
Above-mentioned technical scheme has guaranteed the structural relation of valve ball, positioning seat and steel ball, has reduced the resistance of ball valve opening and closing in-process.
The edge of the rectangular groove of the valve ball is arc-shaped.
The valve ball is made of stainless steel, and a hard alloy coating is arranged on the spherical surface of the valve ball and is 0.2 mm thick.
Above-mentioned technical scheme has realized the surface strength and the precision of ball valve, has guaranteed the durability of ball valve.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is within the scope of the present invention for those skilled in the art to obtain other drawings based on these drawings without inventive labor;
FIG. 1 is a cross-sectional view of an embodiment of the high precision mirror polished valve ball of the present invention applied to a ball valve;
FIG. 2 is a perspective view of a high precision mirror polished valve ball according to an embodiment of the present invention;
FIG. 3 is a perspective view of a valve ball of the high precision mirror grinding valve ball of the present invention;
FIG. 4 is a perspective view of a valve ball of the high precision mirror polished valve ball of the present invention;
in the figure, 1-valve rod, 11-flat end, 12-waist circular hole, 2-valve ball, 21-medium channel, 22-rectangular groove, 23-cylindrical boss, 231-steel ball groove, 24-pin hole, 3-elastic cylindrical pin, 4-steel ball, 5-positioning seat, 51-steel ball containing cavity, 6-valve body, 7-O-shaped ring, 8-valve seat, 9-packing, 10-pressing screw sleeve and 11-handle.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings.
In the embodiment of the utility model shown in fig. 1 to 4, the valve rod 1, the valve ball 2, the elastic cylindrical pin 3, the steel ball 4, the positioning seat 5, the valve body 6 and the valve seat 8 are made of stainless steel, the pressing thread sleeve 10 and the handle 11 are made of carbon steel, and the O-shaped ring is made of fluororubber;
the upper part of the spherical surface of the valve ball 2 is provided with a rectangular groove 22 which is symmetrical in parallel with the central line of the medium channel 21, the middle position of the symmetrical surface of the arc-shaped surface of the rectangular groove 22 is provided with a pin hole 24, the center of the lower part of the spherical surface of the valve ball 2 is provided with a circular boss 23, a steel ball groove 231 is arranged around the circular boss 23 of the ball 2, the edge of the rectangular groove 22 of the valve ball 2 is arc-shaped, the spherical size of the end part of the circular boss 23 of the valve ball 2 is consistent with that of the spherical surface of other parts, the spherical surface of the valve ball 2 is provided with a hard alloy coating, the thickness is 0.2 mm, and the roughness of the spherical surface of the valve ball is less than 0.4 mu m; the lower end of the valve rod 1 is provided with a flat end part 11 matched with the width of the rectangular groove 22, and the flat end part 11 of the valve rod 1 is provided with a waist circular hole 12; the positioning seat 5 is provided with a central hole, and the center of the plane part of the positioning seat is provided with a steel ball containing cavity 51;
the lower end of the valve ball 2 is provided with a positioning seat 5, a plurality of steel balls 4 are arranged between the valve seat 2 and the plane side of the positioning seat 5, a cylindrical boss 23 at the lower end of the valve ball 2 is in clearance fit with a central hole of the positioning seat 5, a steel ball groove 231 at the lower end of the valve ball 2 corresponds to a steel ball containing cavity of the positioning seat 5, the cylindrical boss 23 of the valve ball 2 rotates in the central hole of the positioning seat 5, and the valve ball 2 is in rolling fit with the steel balls 4;
the valve ball 2 and the positioning seat 5 are arranged in a valve body cavity of the valve body 6, and the arc surface of the positioning seat 5 is matched with the valve body 6; the valve rod 1 is arranged in a valve rod shaft hole at the upper part of the valve body 6, the center of a waist circular hole 12 of the valve rod 1 corresponds to a pin hole 24 of the valve ball 2, a flat end part 11 of the valve rod 1 is in clearance fit with a rectangular groove 22 of the valve ball 2, the valve rod 1 and the valve ball 2 are connected by an elastic cylindrical pin 3, the elastic cylindrical pin 3 does not protrude out of the surface of the valve ball 2, the elastic cylindrical pin 3 is in clearance fit with the valve rod 1, the elastic cylindrical pin 3 is in interference fit with the valve ball, and the axial center line of the valve rod 1 is vertical to the center line of a medium channel 21 of the valve ball; set up packing 9 in the valve rod shaft hole and compress tightly swivel nut 10, compress tightly swivel nut 10 and compress tightly packing 9 and seal up valve rod 1 and valve body 6, 1 upper end of valve rod sets up handle 11, 6 both sides of valve body set up disk seat 8, positioning seat 5 and two disk seat 8 clearance fit, disk seat 8 passes through O type circle 1 and the sealed cooperation of valve body 6, spherical sealing surface and the sealed cooperation of valve ball 2 in the disk seat 8, leave the pretension space between disk seat 8 and the valve body 6, both ends disk seat 8 is connected through the fastener and is sealed 2 pretensions of valve ball, handle 11 drive valve ball 2 rotates the circulation that realizes the medium passageway of ball valve and ends.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the scope of the present invention is not to be limited by the embodiments, and therefore, the appended claims are intended to cover all such modifications and changes as fall within the true spirit and scope of the utility model.
Claims (9)
1. High accuracy mirror surface grinds valve spheroid, including valve rod and valve ball, its characterized in that: the valve ball is characterized by further comprising a pin, a positioning seat and steel balls, wherein a rectangular groove which is symmetrical in parallel with the central line of the medium channel is formed in the upper portion of the spherical surface of the valve ball, a flat end portion which is matched with the width of the rectangular groove is embedded into the rectangular groove of the valve ball, the valve ball is connected with the valve rod through the pin, a circular boss is arranged in the center of the lower portion of the spherical surface of the valve ball, the circular boss is in clearance fit with the central hole of the positioning seat, a plurality of steel balls are arranged between the circular boss in the lower portion of the spherical surface of the valve ball and the positioning seat, the valve ball is in rolling fit with the steel balls, the valve rod and the circular boss of the valve ball are located on the same axial line, and the surface of the valve ball is formed through high-precision mirror grinding.
2. The high precision mirror-ground valve ball according to claim 1, wherein: the valve ball and the pin for connecting the valve rod are arranged in the middle of the symmetrical surface of the arc-shaped surface of the rectangular groove and penetrate through one side or two sides of the groove, and the valve ball is in interference fit with the pin.
3. The high precision mirror-ground valve ball according to claim 2, wherein: the hole that the valve rod is connected with the valve ball is a waist round hole, the center of the waist round hole corresponds to the pin hole on the valve ball, and the valve rod is in clearance fit with the pin.
4. The high precision mirror-ground valve ball according to claim 3, wherein: the pin for connecting the valve ball and the valve rod is an elastic cylindrical pin.
5. The high precision mirror-ground valve ball according to claim 4, wherein: the spherical surface size of the end part of the circular boss of the valve ball is consistent with that of other parts.
6. The high precision mirror-ground valve ball according to claim 5, wherein: the positioning seat is arranged in a valve body cavity, and a steel ball containing cavity is arranged around a center hole of the positioning seat.
7. The high accuracy mirror-ground valve ball of claim 6, wherein: and a steel ball groove is arranged around the circular boss of the valve ball, and corresponds to the steel ball containing cavity of the positioning seat.
8. The high-precision mirror-ground valve ball according to one of claims 1 to 7, wherein: the edge of the rectangular groove of the valve ball is arc-shaped.
9. The high precision mirror-ground valve ball according to claim 8, wherein: the spherical material of valve ball is stainless steel, valve ball surface is provided with the carbide coating, thickness 0.2 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220775246.6U CN216951765U (en) | 2022-04-01 | 2022-04-01 | High-precision mirror grinding valve ball |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220775246.6U CN216951765U (en) | 2022-04-01 | 2022-04-01 | High-precision mirror grinding valve ball |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216951765U true CN216951765U (en) | 2022-07-12 |
Family
ID=82300593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220775246.6U Active CN216951765U (en) | 2022-04-01 | 2022-04-01 | High-precision mirror grinding valve ball |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216951765U (en) |
-
2022
- 2022-04-01 CN CN202220775246.6U patent/CN216951765U/en active Active
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