CN209943578U - Pneumatic limiting accurate control ball valve - Google Patents
Pneumatic limiting accurate control ball valve Download PDFInfo
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- CN209943578U CN209943578U CN201920677644.2U CN201920677644U CN209943578U CN 209943578 U CN209943578 U CN 209943578U CN 201920677644 U CN201920677644 U CN 201920677644U CN 209943578 U CN209943578 U CN 209943578U
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- valve
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- adjusting bolt
- position adjusting
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Abstract
The utility model discloses a pneumatic spacing accurate control ball valve, which comprises a valve body connected with a valve cover through bolts and nuts to form an integrated structure, wherein the inner cavities of the valve body and the valve cover are provided with flow passages; the ball body is arranged in the flow channel and is arranged on the valve cover through the metal valve seat, and the bottom end of the valve rod is in floating connection with the ball body; the end face of the outer edge of the valve rod is provided with an extension sleeve, the upper part of the extension sleeve is provided with a support, the upper part of the support is provided with an air cylinder, the air cylinder is connected with the top end of the valve rod, and the valve rod is driven by the air cylinder to rotate to drive the ball body to rotate to open or close the ball valve; the cylinder also comprises a limiting device, and the complete opening or the complete closing of the ball body is accurately controlled through the limiting device. The utility model discloses simple structure installs limiting cam in the cylinder, at the rotatory in-process of cam, and the spacing protruding structure through special design on limiting cam is spacing at the mode on full open position adjusting bolt or full cut-off position bolt, can the complete opening or the complete closure of accurate control flap.
Description
Technical Field
The utility model relates to a pneumatic ball valve technical field especially relates to a pneumatic spacing accurate control ball valve.
Background
The pneumatic ball valve is a valve device driven by air pressure, the working principle of the pneumatic ball valve is that the air pressure is used for driving a ball body to rotate, when the ball body rotates by 90 degrees, the axis of a through hole and the axis of the valve form an included angle of 90 degrees, and the ball body blocks a flow passage, so that fluid is cut off. However, the pneumatic ball valve on the market at present mainly has the following defects: when the valve rod is driven by air pressure to drive the ball body to rotate, the rotating angle is difficult to control, and the problem of incomplete opening or incomplete closing can exist, so that the situation of incomplete opening or complete closing can exist, the sealing cannot be completely realized, and the normal use of the ball valve can be directly influenced.
In order to overcome not enough and the defect among the background art, the utility model provides a pneumatic spacing accurate control ball valve opens or closes completely through stop device accurate control valve door.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a pneumatic spacing accurate control ball valve that opens completely or close completely through stop device accurate control valve.
The utility model discloses a realize through following technical scheme:
the utility model provides a spacing accurate control ball valve of pneumatics, includes the valve body, the valve gap that is connected with the valve body, installs the spheroid in the valve body and the valve rod that is connected with the spheroid, wherein:
the valve body is connected with the valve cover through bolts and nuts to form an integrated structure, and a flow channel comprising a flow channel inlet and a flow channel outlet is arranged in the inner cavities of the valve body and the valve cover;
the ball body is arranged in the flow channel and is arranged on the valve cover through the metal valve seat, a notch is formed in the ball body, and the bottom end of the valve rod is embedded into the notch and is in floating connection with the ball body;
the ball valve is characterized in that the outer edge end face of the bottom end of the valve rod is connected with the valve body through a bearing, the outer edge end face of the valve rod is provided with an extension sleeve, the upper part of the extension sleeve is provided with a support, the upper part of the support is provided with an air cylinder, the air cylinder is connected with the top end of the valve rod, and the valve rod is driven by the air cylinder to rotate to drive the ball body to rotate to open or close;
the cylinder also comprises a limiting device, and the complete opening or the complete closing of the ball body is accurately controlled through the limiting device.
Further, stop device includes spacing cam, full open position adjusting bolt and full close position adjusting bolt, spacing cam installs in the cylinder and rotatory under the drive of cylinder, and spacing cam passes through the shaft coupling transmission and connects the valve rod, the bottom of cylinder is provided with full open position adjusting bolt and full close position adjusting bolt in the position corresponding with spacing cam, and it is spacing to carry out spacing cam through full open position adjusting bolt when the spheroid is opened completely, carries out spacingly through full close position adjusting bolt when the spheroid is closed completely to spacing cam.
Furthermore, a pair of limiting protrusions are arranged on the limiting cam, the limiting protrusions protrude out of the end face of the outer edge of the limiting cam to form a limiting structure matched with the full-open position adjusting bolt and the full-close position adjusting bolt, and when the ball body is completely opened, the full-open position adjusting bolt abuts against one limiting protrusion on the limiting cam to complete limiting of the full-open position; when the ball body is completely closed, the full-closed position adjusting bolt props against the other limiting bulge on the limiting cam to complete the limiting of the full-closed position.
Further, the fully-opened position adjusting bolt and the fully-closed position adjusting bolt are symmetrically arranged at the lower position of the limiting cam at intervals through the locking nut, and the fully-opened position adjusting bolt and the fully-closed position adjusting bolt are arranged in a region between a pair of limiting protrusions on the limiting cam.
Further, the stop device also comprises a position indicator, and the position indicator displays a fully-opened position and a fully-closed position of the valve.
Furthermore, the valve rod is provided with a graphite gasket, a combined filler, the graphite gasket and a pressing sleeve from bottom to top in sequence at the position where the lengthening sleeve is connected with the support, the pressing sleeve is connected with a pressing plate, and the pressing plate is installed on the support through a bolt and a nut.
Further, a disc spring is installed on the pressing plate, and the bolt penetrates through the disc spring and the pressing plate and is fixed through a nut.
Furthermore, a spring is arranged between the metal valve seat and the valve cover, and the spring is embedded in the other side wall of the metal valve seat opposite to the ball body and connected with the valve cover.
Further, the spring is arranged in a protruding mode relative to the metal valve seat and used for adjusting the sealing gap between the metal valve seat and the ball body after the metal valve seat is worn.
Furthermore, metal winding gaskets are arranged between the valve body and the valve cover and between the valve body and the lengthening sleeve.
The utility model has the advantages that: the utility model discloses simple structure installs limit cam in the cylinder, at the rotatory in-process of cam, through the spacing protruding structure of special design spacing mode on full open position adjusting bolt or full cut-off position bolt on the limit cam, can the complete opening or the complete closure of accurate control flap, the spring can adjust the sealed clearance after the metal valve seat wearing and tearing in addition and guarantee the leakproofness, convenient and practical.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a partially enlarged view of a portion a of fig. 1.
Fig. 3 is a partially enlarged view of the upper part B of fig. 1.
Fig. 4 is a schematic diagram of the state of the ball valve when the ball valve is completely opened.
Fig. 5 is a schematic diagram of the state of the ball valve of the present invention when it is completely closed.
Wherein:
1. a valve body;
2. a valve cover;
3. a sphere;
4. a valve stem;
5. a bolt;
6. a nut;
7. a flow channel;
8. a metal valve seat;
9. a notch;
10. a bearing;
11. lengthening the sleeve;
12. a support;
13. a cylinder;
14. a limiting device;
141. a limiting cam;
1411. a limiting bulge;
142. a fully open position adjusting bolt;
143. a fully closed position adjusting bolt;
144. a position indicator;
15. a coupling;
16. locking the nut;
17. a graphite gasket;
18. combining fillers;
19. pressing the sleeve;
20. pressing a plate;
21. a disc spring;
22. a spring;
23. a metal wound gasket.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
As shown in fig. 1 to 5, the pneumatic limiting precise control ball valve comprises a valve body 1, a valve cover 2 connected with the valve body 1, a ball body 3 installed in the valve body 1, and a valve rod 4 connected with the ball body 3, wherein the valve body 1 is connected with the valve cover 2 through a bolt 5 and a nut 6 to form an integrated structure, and a flow channel 7 including a flow channel inlet and a flow channel outlet is arranged in inner cavities of the valve body 1 and the valve cover 2; the ball body 3 is arranged in the flow passage 7 and is arranged on the valve cover 2 through the metal valve seat 8, a notch 9 is formed in the ball body 3, and the bottom end of the valve rod 4 is embedded into the notch 9 and is in floating connection with the ball body 3; the outer edge end face of the bottom end of the valve rod 4 is connected with the valve body 1 through a bearing 10, the outer edge end face of the valve rod 4 is provided with an extension sleeve 11, the upper part of the extension sleeve 11 is provided with a support 12, the upper part of the support 12 is provided with an air cylinder 13, the air cylinder 13 is connected with the top end of the valve rod 4, and the valve rod 4 is driven by the air cylinder 13 to rotate to drive the ball body 3 to rotate to open or close the ball valve; the cylinder 13 also comprises a stop device 14, by means of which stop device 14 the complete opening or complete closing of the ball 3 is precisely controlled.
In the present embodiment, the limiting device 14 includes a limiting cam 141, a fully-opened position adjusting bolt 142, and a fully-closed position adjusting bolt 143, the limiting cam 141 is installed in the cylinder 13 and is driven to rotate by the cylinder 13, the limiting cam 141 is in transmission connection with the valve rod 4 through the coupling 15, the fully-opened position adjusting bolt 142 and the fully-closed position adjusting bolt 143 are provided at the bottom of the cylinder 13 at a position corresponding to the limiting cam 141, as shown in fig. 4 and 5, the limiting cam 141 is limited by the fully-opened position adjusting bolt 142 when the sphere 3 is fully opened, and the limiting cam 141 is limited by the fully-closed position adjusting bolt 143 when the sphere 3 is fully closed.
More specifically, the limiting cam 141 is provided with a pair of limiting protrusions 1411, the pair of limiting protrusions 1411 protrude out of the outer edge end face of the limiting cam 141 to form a limiting structure matched with the fully-opened position adjusting bolt 142 and the fully-closed position adjusting bolt 143, the limiting structure is a special structure for limiting and arranged on the limiting cam 141, when the sphere 3 is completely opened, the fully-opened position adjusting bolt 142 abuts against one limiting protrusion 1411 on the limiting cam 141 to complete limiting of the fully-opened position, and the fully-opened state is schematically shown in fig. 3; when the ball 3 is completely closed, the fully-closed position adjusting bolt 143 stops the fully-closed position against another stop protrusion 1411 of the stop cam 141, and the completely-closed state is schematically shown in fig. 4.
In the present embodiment, as seen in fig. 4 and 5, the fully-open position adjusting bolt 142 and the fully-closed position adjusting bolt 143 are disposed at positions below the limit cam 141 at intervals symmetrically by the lock nut 16, and the fully-open position adjusting bolt 142 and the fully-closed position adjusting bolt 413 are disposed in an area between a pair of limit protrusions 1411 on the limit cam 141.
More specifically, as shown in fig. 4, when the ball 3 needs to be completely opened, the air cylinder 13 drives the limiting cam 141 to drive the valve rod 4 through the coupler 15, so that the ball 3 rotates in one direction until a limiting protrusion 1411 on the limiting cam 141 is clamped and limited when rotating to the full-open position adjusting bolt 142, and at this time, the ball 3 is in a completely opened state;
as shown in fig. 5, when the ball 3 needs to be completely closed, the air cylinder 13 drives the limiting cam 141 to drive the valve rod 4 through the coupler 15, so that the ball 3 rotates in the opposite direction until another limiting protrusion 1411 on the limiting cam 141 is clamped and limited when rotating to the fully-closed position adjusting bolt 143, and at this time, the ball 3 is in a completely closed state;
therefore, as seen in fig. 4 and 5, the action of the limiting protrusion 1411 on the limiting cam 141 catching or disengaging the fully-opened adjusting bolt 142 and the fully-closed adjusting bolt 143 during the rotation is a natural and consistent action, except that the ball 3 is in the fully-opened or fully-closed state, and the fully-opened adjusting bolt 142 and the fully-closed adjusting bolt 143 are arranged without any interference with the rotation of the limiting cam 141 in other states, so that the limiting device 14 can accurately control the full-opened or fully-closed of the ball 3.
In this embodiment, stop device 14 still includes position indicator 144, and position indicator 144 shows the complete open position of valve and complete closed position, and the operating personnel of being convenient for can more audio-visually see the on-off state of valve, and this application position indicator adopts the product that model MECHANICALSWICHS/2SPDT was produced and sold by Hubei Hangzhou Rong electrical appliances Limited company, and because position indicator is prior art, it is not repeated in this application.
In the embodiment, as shown in fig. 3, the valve rod 4 is provided with a graphite gasket 17, a combined packing 18, a graphite gasket 17 and a pressing sleeve 19 in sequence from bottom to top at a position where the extension sleeve 11 is connected with the bracket 12, the pressing sleeve 19 is connected with a pressing plate 20, the pressing plate 20 is mounted on the bracket 12 through a bolt 5 and a nut 6, the pressing plate 20 is provided with a disc spring 21, the bolt 5 penetrates through the disc spring 21 and the pressing plate 20 and is fixed through the nut 6, the arrangement of the disc spring 21 increases the flexibility of the whole fastening system, reduces the influence of loosening of a preload load of the bolt 5 caused by creep deformation or different thermal expansion of the packing and the like, improves the sealing performance of the packing gland, and prolongs the service life of.
In the present embodiment, as shown in fig. 4, a spring 22 is installed between the metal valve seat 8 and the valve cover 2, the spring 22 is embedded in the other side wall of the metal valve seat 8 opposite to the ball 3 and connected to the valve cover 2, and the spring 22 is protruded opposite to the metal valve seat 8 for adjusting the sealing gap between the metal valve seat 8 and the ball 3 after the metal valve seat 8 is worn, so that the sealing performance can be ensured even after the metal valve seat 8 is worn.
In this embodiment, the metal winding gasket 23 is installed between the valve body 1 and the bonnet 2 and between the valve body 1 and the extension sleeve 11, the metal winding gasket 238 is provided with a metal inner reinforcing ring and a metal outer positioning ring, the maximum compression degree is controlled by the inner steel ring and the outer steel ring, and the sealing performance is remarkable.
The utility model has the advantages that: the utility model discloses simple structure installs limit cam in the cylinder, at the rotatory in-process of cam, through the spacing protruding structure of special design spacing mode on full open position adjusting bolt or full cut-off position bolt on the limit cam, can the complete opening or the complete closure of accurate control flap, the spring can adjust the sealed clearance after the metal valve seat wearing and tearing in addition and guarantee the leakproofness, convenient and practical.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a spacing accurate control ball valve of pneumatics which characterized in that: including the valve body, the valve gap that is connected with the valve body, install spheroid in the valve body and the valve rod that is connected with the spheroid, wherein:
the valve body is connected with the valve cover through bolts and nuts to form an integrated structure, and a flow channel comprising a flow channel inlet and a flow channel outlet is arranged in the inner cavities of the valve body and the valve cover;
the ball body is arranged in the flow channel and is arranged on the valve cover through the metal valve seat, a notch is formed in the ball body, and the bottom end of the valve rod is embedded into the notch and is in floating connection with the ball body;
the ball valve is characterized in that the outer edge end face of the bottom end of the valve rod is connected with the valve body through a bearing, the outer edge end face of the valve rod is provided with an extension sleeve, the upper part of the extension sleeve is provided with a support, the upper part of the support is provided with an air cylinder, the air cylinder is connected with the top end of the valve rod, and the valve rod is driven by the air cylinder to rotate to drive the ball body to rotate to open or close;
the cylinder also comprises a limiting device, and the complete opening or the complete closing of the ball body is accurately controlled through the limiting device.
2. The pneumatic limit precision control ball valve according to claim 1, characterized in that: stop device includes spacing cam, full open position adjusting bolt and full cut-off position adjusting bolt, spacing cam installs in the cylinder and rotatory under the drive of cylinder, and spacing cam passes through the shaft coupling transmission and connects the valve rod, the bottom of cylinder is provided with full open position adjusting bolt and full cut-off position adjusting bolt in the position corresponding with spacing cam, and it is spacing to carry out spacing cam through full open position adjusting bolt when the spheroid is opened completely, carries on spacingly through full cut-off position adjusting bolt to spacing cam when the spheroid is closed completely.
3. The pneumatic limit precision control ball valve according to claim 2, characterized in that: the limiting cam is provided with a pair of limiting bulges, the limiting bulges protrude out of the end face of the outer edge of the limiting cam to form a limiting structure matched with the full-open position adjusting bolt and the full-close position adjusting bolt, and when the ball body is completely opened, the full-open position adjusting bolt abuts against one limiting bulge on the limiting cam to complete the limiting of the full-open position; when the ball body is completely closed, the full-closed position adjusting bolt props against the other limiting bulge on the limiting cam to complete the limiting of the full-closed position.
4. The pneumatic limit precision control ball valve according to claim 3, characterized in that: the fully-opened position adjusting bolt and the fully-closed position adjusting bolt are symmetrically arranged at the lower position of the limiting cam at intervals through the locking nut, and the fully-opened position adjusting bolt and the fully-closed position adjusting bolt are arranged in a region between a pair of limiting protrusions on the limiting cam.
5. The pneumatic limit precision control ball valve according to claim 2, characterized in that: the stop device also includes a position indicator that displays a fully open position and a fully closed position of the valve.
6. The pneumatic limit precision control ball valve according to claim 1, characterized in that: the valve rod is provided with a graphite gasket, a combined filler, a graphite gasket and a pressing sleeve from bottom to top in sequence at the position where the lengthening sleeve is connected with the support, the pressing sleeve is connected with a pressing plate, and the pressing plate is installed on the support through a bolt and a nut.
7. The pneumatic limit precision control ball valve according to claim 6, characterized in that: and the pressing plate is provided with a disc spring, and the bolt penetrates through the disc spring and the pressing plate and is fixed through a nut.
8. The pneumatic limit precision control ball valve according to claim 1, characterized in that: and a spring is arranged between the metal valve seat and the valve cover, and the spring is embedded in the other side wall of the metal valve seat opposite to the ball body and is connected with the valve cover.
9. The pneumatic limit precision control ball valve according to claim 7, wherein: the spring is arranged in a protruding mode relative to the metal valve seat and used for adjusting the sealing gap between the metal valve seat and the ball body after the metal valve seat is abraded.
10. The pneumatic limit precision control ball valve according to claim 1, characterized in that: and metal winding gaskets are arranged between the valve body and the valve cover and between the valve body and the lengthening sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920677644.2U CN209943578U (en) | 2019-05-13 | 2019-05-13 | Pneumatic limiting accurate control ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920677644.2U CN209943578U (en) | 2019-05-13 | 2019-05-13 | Pneumatic limiting accurate control ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209943578U true CN209943578U (en) | 2020-01-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920677644.2U Active CN209943578U (en) | 2019-05-13 | 2019-05-13 | Pneumatic limiting accurate control ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209943578U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110030398A (en) * | 2019-05-13 | 2019-07-19 | 苏州工业园区思达德阀门有限公司 | A kind of accurate control ball valve of pneumatic limit |
-
2019
- 2019-05-13 CN CN201920677644.2U patent/CN209943578U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110030398A (en) * | 2019-05-13 | 2019-07-19 | 苏州工业园区思达德阀门有限公司 | A kind of accurate control ball valve of pneumatic limit |
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