CN116697082A - Pneumatic track ball valve with shock resistance function - Google Patents
Pneumatic track ball valve with shock resistance function Download PDFInfo
- Publication number
- CN116697082A CN116697082A CN202310979744.1A CN202310979744A CN116697082A CN 116697082 A CN116697082 A CN 116697082A CN 202310979744 A CN202310979744 A CN 202310979744A CN 116697082 A CN116697082 A CN 116697082A
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- Prior art keywords
- valve
- valve rod
- sleeve
- ball
- bearing
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- Pending
Links
- 230000035939 shock Effects 0.000 title claims description 21
- 238000012856 packing Methods 0.000 claims description 52
- 238000003825 pressing Methods 0.000 claims description 28
- 238000005096 rolling process Methods 0.000 claims description 19
- 239000002184 metal Substances 0.000 claims description 15
- 238000004804 winding Methods 0.000 claims description 15
- 229910002804 graphite Inorganic materials 0.000 claims description 13
- 239000010439 graphite Substances 0.000 claims description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 12
- 210000004907 gland Anatomy 0.000 claims description 10
- 125000006850 spacer group Chemical group 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 239000000428 dust Substances 0.000 claims description 4
- 230000002265 prevention Effects 0.000 claims description 3
- 230000008646 thermal stress Effects 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0647—Spindles or actuating means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
- F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/16—Actuating devices; Operating means; Releasing devices actuated by fluid with a mechanism, other than pulling-or pushing-rod, between fluid motor and closure member
- F16K31/163—Actuating devices; Operating means; Releasing devices actuated by fluid with a mechanism, other than pulling-or pushing-rod, between fluid motor and closure member the fluid acting on a piston
- F16K31/1635—Actuating devices; Operating means; Releasing devices actuated by fluid with a mechanism, other than pulling-or pushing-rod, between fluid motor and closure member the fluid acting on a piston for rotating valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/52—Mechanical actuating means with crank, eccentric, or cam
- F16K31/528—Mechanical actuating means with crank, eccentric, or cam with pin and slot
- F16K31/5284—Mechanical actuating means with crank, eccentric, or cam with pin and slot comprising a tap or cock
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
- F16K41/023—Spindle sealings with stuffing-box ; Sealing rings for spindles which only rotate, i.e. non-rising spindles
- F16K41/026—Spindle sealings with stuffing-box ; Sealing rings for spindles which only rotate, i.e. non-rising spindles for rotating valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0663—Packings
- F16K5/0694—Spindle sealings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
- F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
- F16K5/20—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces
- F16K5/201—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces with the housing or parts of the housing mechanically pressing the seal against the plug
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
Abstract
The invention belongs to the field of valve structures, and relates to a pneumatic track ball valve with an impact resistance function, which comprises a valve bank, a bracket, a valve rod, a guide pin, a pneumatic actuator and an impact resistance supporting component, wherein the bracket is arranged at the upper part of the valve bank, the middle part of the bracket movably penetrates through the valve rod for controlling the valve bank to open and close, a spiral guide groove is formed on the valve rod, the bracket is provided with the guide pin embedded in the spiral guide groove, the upper part of the bracket is connected with the pneumatic actuator for driving the valve rod opening and closing valve group, a connecting shaft of the pneumatic actuator is movably connected with the valve rod through a low friction actuator, the low friction actuator supports the valve rod to rotate independently, and the impact resistance supporting component is arranged on the bracket. The thrust cylindrical roller bearing not only can effectively reduce the friction force generated between the valve rod and the connecting shaft of the pneumatic actuator, so that the valve can be opened and closed more smoothly, but also can reduce the impact of the pneumatic actuator on the valve rod, and the service life of the valve is prolonged.
Description
Technical Field
The invention belongs to the field of valve structures, and relates to a pneumatic track ball valve with an impact resistance function.
Background
The track ball valve is a key device in a fluid conveying system in the petroleum, chemical and natural gas industry, and the sealing performance and the service life of the track ball valve directly determine the safety, the high efficiency and the stability of the system operation.
The valve rod guide pin and the rolling shaft on the ball body of the conventional track ball valve are fixed, the valve rod is required to frequently move up and down in the valve opening and closing process, the valve rod can slide through the surface of the guide pin in a hard way, unidirectional hard friction is formed for a long time, a large sliding friction force is generated, and the impact force generated by opening and closing is added, so that the valve rod and the guide pin are damaged, and accordingly faults occur;
in addition, the connecting shaft of the pneumatic actuator is locked or coaxial with the valve rod of the track ball valve, so that the piston or the connecting shaft in the actuator cylinder needs to rotate along with the valve rod for a long time, the performance of the actuator is reduced, and the sealing element of the piston in the actuator cylinder is extremely easy to damage.
According to the defects in the prior art, the pneumatic track ball valve with the shock resistance is designed to overcome the defects in the prior art, reduce friction and unnecessary transmission, avoid damage and ensure the service life.
Disclosure of Invention
The invention aims to overcome the defects of large friction force and impact force, unnecessary transmission, easy damage and low service life in the prior art, and aims to provide the pneumatic track ball valve with the functions of reducing friction and unnecessary transmission, avoiding damage and ensuring the service life and impact resistance.
In order to solve the technical problems, the invention provides the pneumatic track ball valve with the shock resistance function, which comprises a valve bank, a bracket, a valve rod, a guide pin, a pneumatic actuator and a shock-resistant supporting component, wherein the bracket is arranged at the upper part of the valve bank, the middle part of the bracket movably penetrates through the valve rod for controlling the valve bank to open and close, a spiral guide groove is formed in the valve rod, the bracket is provided with the guide pin embedded in the spiral guide groove, the upper part of the bracket is connected with the pneumatic actuator for driving the valve rod to open and close the valve bank, a connecting shaft of the pneumatic actuator is movably connected with the valve rod through a low friction force actuator, the low friction force actuator supports the valve rod to rotate independently, and the shock-resistant supporting component is arranged on the bracket.
Preferably, the impact-resistant supporting component comprises a bearing sleeve, a second inner hexagon screw, a bearing gland, an antifriction gasket and a needle bearing, wherein the bearing sleeve penetrates through the position of the support, provided with the guide pin, the guide pin movably penetrates through one end of the bearing sleeve, the other end of the bearing sleeve is connected with the bearing gland through the second inner hexagon screw, one side, close to the guide pin, of the bearing gland is provided with the antifriction gasket which is in contact with the guide pin, and the needle bearing surrounding the guide pin is arranged on the inner side of the bearing sleeve.
Preferably, the low friction force driver comprises a shoulder, a shell, a first socket head cap screw, a second socket head cap ring, a thrust cylindrical roller bearing and a limit rib, wherein the upper end of the valve rod is provided with a limit groove, the lower part of the connecting shaft is provided with the shoulder, two opposite shells are surrounded between the valve rod and the connecting shaft and are connected through the first socket head cap screw, the inner side of the shell is provided with the second socket head cap ring embedded with the limit groove and the two thrust cylindrical roller bearings respectively positioned on the upper side and the lower side of the second socket head cap ring, the upper thrust cylindrical roller bearing is positioned below the shoulder, the lower thrust cylindrical roller bearing is sleeved on the valve rod, the inner side of the support is provided with the limit rib, the outer side of the shell is provided with the limit groove, the limit groove slides on the limit rib and the limit groove are mutually limited.
Preferably, the impact-resistant supporting assembly further comprises a spacer bush, two or more needle bearings are arranged, and a spacer bush with an isolation protection function is arranged between every two adjacent needle bearings.
Preferably, the valves include valve gap, metal winding pad two, disk seat subassembly, spheroid, conflict subassembly and locating part, the upper portion of valve body is connected with the valve gap, has placed metal winding pad two between valve gap and the valve body, and leg joint is in the upper portion of valve gap, is equipped with the disk seat subassembly on the runner of valve body, and the interior bottom rotation of valve body is equipped with the spheroid with disk seat subassembly contact, and the valve rod lower extreme extends to inside the spheroid, and spheroid upper portion is equipped with the conflict subassembly with the valve rod contact, and the valve rod is rotatory through conflict subassembly transmission spheroid, and spheroid upper portion is equipped with the locating part that is used for spacing valve rod, exists the clearance between locating part and the valve rod.
Preferably, the valve seat assembly comprises an extension tube and a valve body, the extension tube is welded on the flow passage of the valve body, one side of the extension tube, which is close to the ball body, is welded with the valve body which is in watertight contact with the ball body, and a V-shaped notch is formed in the inner side of one end of the valve body, which is welded with the extension tube, and is used for absorbing thermal stress generated during welding.
Preferably, the abutting component comprises a second shaft sleeve and a rolling shaft, the second shaft sleeve is symmetrically welded on the inner side of the upper part of the sphere, the rolling shaft penetrates through the second shaft sleeve in a rotating mode, two parallel wedge-shaped faces are arranged at the lower end of the valve rod, and the wedge-shaped faces are used for extruding the rolling shaft.
Preferably, the valve cover further comprises a first shaft sleeve, a packing pad, graphite packing, a packing pressing sleeve, a sliding bearing, a packing pressing plate and a limit screw, wherein the lower portion of the valve cover is connected with the first shaft sleeve positioned in the valve cover, the packing pad is arranged on the first shaft sleeve, graphite packing is placed on the packing pad, the packing pressing sleeve is slidably arranged on the upper portion of the valve cover, the packing pressing sleeve is used for compressing the graphite packing, the sliding bearing sleeved on the valve rod is arranged on the inner side of the packing pressing sleeve, the upper side of the valve cover is connected with the packing pressing plate in contact with the packing pressing sleeve, and the first shaft sleeve is in threaded connection with the valve cover and/or the eccentric position of the first shaft sleeve is connected with the valve cover through the limit screw.
Preferably, the valve body is further provided with a rubber ring and an O-shaped ring, the rubber ring used for watertight is connected to one side, which is contacted with the ball body, of the valve body, and the O-shaped ring is arranged between the guide pin and the bearing sleeve and plays a role in dust prevention.
Preferably, the valve further comprises a bottom cover, a first metal winding pad, an adjusting pad and a ball shaft sleeve, the lower part of the valve body is connected with the bottom cover, the first metal winding pad is arranged between the bottom cover and the valve body, the adjusting pad for adjusting the height of the ball body is arranged on the upper part of the bottom cover, the ball shaft sleeve is arranged on the upper part of the adjusting pad, the lower part of the ball body protrudes to form a cylindrical part, and the cylindrical part rotates to penetrate through the ball shaft sleeve.
On the basis of overcoming the defects of the prior art, the invention can also achieve the following beneficial effects:
1. the thrust cylindrical roller bearing not only can effectively reduce the friction force generated between the valve rod and the connecting shaft of the pneumatic actuator, so that the valve can be opened and closed more smoothly, but also can reduce the impact of the pneumatic actuator on the valve rod, and the service life of the valve is prolonged.
2. The design of the rolling guide pin and the rolling shaft structure greatly reduces the friction force between the valve rod and the guide pin and between the valve rod and the rolling shaft, and greatly reduces the abrasion to the valve rod, the guide pin and the rolling shaft in the valve switching process.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a cross-sectional view of the housing of the valve body, valve cover, bracket, etc. of the present invention.
Fig. 3 is a cross-sectional view of the bearing housing and inner shell such as the housing of the present invention.
Fig. 4 is an enlarged view of the portion a of fig. 3, specifically illustrating the structure of the guide pin, antifriction washer, and needle bearing according to the present invention.
Fig. 5 is an enlarged view of the portion B of fig. 3, specifically, a schematic structure of the connection between the valve rod and the connecting shaft.
Fig. 6 is an enlarged view of fig. 3C, showing a schematic structure of a valve seat assembly according to the present invention.
Fig. 7 is a cross-sectional view taken at N-N of fig. 2 in accordance with the present invention.
Fig. 8 is an enlarged view of fig. 3D of the present invention.
The marks in the drawings are: 1-valve body, 2-ball, 3-bottom cover, 4-adjusting pad, 5-ball sleeve, 6-metal winding pad one, 7-connector one, 8-valve seat assembly, 9-valve cover, 10-metal winding pad two, 11-valve rod, 12-packing pad, 13-graphite packing, 14-packing press sleeve, 15-slide bearing, 16-packing press plate, 17-connector two, 18-bracket, 19-connecting shaft, 20-pneumatic actuator, 21-connector three, 22-thrust cylindrical roller bearing, 23-shell, 24-split ring, 25-socket head cap screw one, 26-connector four, 27-connector five, 28-sleeve one, 30-rolling shaft, 31-sleeve two, 32-stopper, 33-bearing sleeve, 34-bearing press cover, 35-guide pin, 36-antifriction spacer, 37-socket head cap screw two, 38-needle bearing, 39-spacer, 40-O-ring.
Detailed Description
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The invention is further described below with reference to the drawings and examples.
Example 1: the utility model provides a pneumatic track ball valve with shock resistance function, as shown in fig. 1-4, including the valves, the support 18, the valve rod 11, the guide pin 35, pneumatic actuator 20 and shock-resistant supporting component, valve group upper portion is equipped with support 18, the middle part activity of support 18 is run through and is used for the valve rod 11 of control valves switching, open on the valve rod 11 has spiral guide slot, be equipped with the guide pin 35 of embedding spiral guide slot on the support 18, the shape of the one end of guide pin 35 embedding spiral guide slot is hemispherical, be used for reducing the frictional force between guide pin 35 and the spiral guide slot, support 18 upper portion is connected with the pneumatic actuator 20 that is used for driving valve rod 11 to open and close valve group, pneumatic actuator 20's connecting axle 19 links to each other with valve rod 11 activity through low friction force actuator, low friction force actuator supports valve rod 11 rotation alone, be equipped with the shock-resistant supporting component that is used for supporting guide pin 35 adaptability activity on the support 18.
As shown in fig. 3 and 4, the impact-resistant support assembly comprises a bearing sleeve 33, a second socket head cap screw 37, a bearing gland 34, an antifriction gasket 36 and a needle bearing 38, wherein the bearing sleeve 33 is penetrated at the position of the support 18 provided with the guide pin 35, the guide pin 35 movably penetrates through one end of the bearing sleeve 33, the other end of the bearing sleeve 33 is connected with the bearing gland 34 through the second socket head cap screw 37, one side of the bearing gland 34, which is close to the guide pin 35, is provided with the antifriction gasket 36 contacted with the guide pin 35, the antifriction gasket 36 can be replaced according to the abrasion degree or the size of the guide pin 35, and the needle bearing 38 surrounding the guide pin 35 is arranged on the inner side of the bearing sleeve 33.
As shown in fig. 3 and 5, the low friction force driver comprises a shoulder, a shell 23, a first socket head cap screw 25, a split ring 24, a thrust cylindrical roller bearing 22 and a limit rib, wherein an inwards concave limit groove is formed in the upper end of the valve rod 11, a shoulder is arranged at the lower part of the connecting shaft 19, the diameter of the shoulder is larger than that of the connecting shaft 19, two opposite shells 23 are surrounded between the valve rod 11 and the connecting shaft 19, the two opposite shells 23 are connected through the first socket head cap screw 25, a split ring 24 embedded in the limit groove and two thrust cylindrical roller bearings 22 respectively arranged on the upper side and the lower side of the split ring 24 are arranged on the inner side of the shell 23, the upper thrust cylindrical roller bearing 22 surrounds the valve rod 11 and the connecting shaft 19 and is positioned below the shoulder, the lower thrust cylindrical roller bearing 22 is sleeved on the valve rod 11, a limit rib is arranged on the inner side of the bracket 18, the outer side of the shell 23 is provided with a limit groove which slides on the limit rib, and the limit rib and the limit groove are mutually limited, so that the low friction force driver is prevented from rotating along with the valve rod 11.
As shown in fig. 3 and 4, the impact-resistant support assembly further includes a spacer bush 39, two needle bearings 38 are provided, and a spacer bush 39 having an insulation protection function is provided between each two adjacent needle bearings 38, and the spacer bush 39 is located inside the bearing bush 33.
As shown in fig. 3 and 4, the valve further comprises a rubber ring and an O-ring 40, the side of the valve body, which is contacted with the ball body 2, is connected with the rubber ring for watertight, the O-ring 40 is arranged between the guide pin 35 and the bearing sleeve 33, the O-ring 40 plays a role in dust prevention, and dust is prevented from entering the bearing sleeve 33 to influence the movement performance of the needle bearing 38.
An operator can apply the corresponding technical scheme in the device to the technology of the valve structure according to specific conditions, and the assembling process is as follows: mounting the pneumatic actuator 20 to the bracket 18 and tightening the third connection 21; the valve rod 11 is sleeved with a thrust cylindrical roller bearing 22 and a split ring 24, the connecting position of the actuator connecting shaft 19 and the valve rod 11 is adjusted, then the valve rod 11 is sleeved with a shell 23, and an inner hexagon screw I25 is screwed; sequentially installing the needle bearing 38, the spacer bush 39, the needle bearing 38, the O-shaped ring 40 and the guide pin 35 into the bearing sleeves 33, then installing the two bearing sleeves 33 into the installation holes on the two sides of the bracket 18 respectively, and accurately embedding the guide pin 35 into the spiral guide grooves on the two sides of the valve rod 11 (in the process, the position of the valve rod 11 can be properly adjusted according to the requirement so as to accurately embed the guide pin 35 into the valve rod 11); the antifriction gasket 36 and the bearing gland 34 are arranged, and the second hexagon socket head cap screw 37 is screwed; when the valve rod 11 is lifted and lowered under the thrust action of the pneumatic actuator 20 in the valve opening and closing process, the connecting shaft 19 of the pneumatic actuator 20 cannot rotate along with the valve rod 11, the performance of the pneumatic actuator 20 cannot be influenced, and the two thrust cylindrical roller bearings 22 not only can effectively reduce the friction force generated between the valve rod 11 and the connecting shaft 19 of the pneumatic actuator 20, so that the valve is opened and closed more smoothly; and meanwhile, the impact of the pneumatic actuator 20 on the valve rod 11 can be reduced, and the service life of the valve is prolonged.
Example 2: on the basis of embodiment 1, as shown in fig. 2, 3 and 7, the valve group comprises a valve cover 9, a metal winding pad two 10, a valve seat assembly 8, a ball 2, a collision assembly and a limiting piece 32, wherein the valve cover 9 is connected to the upper part of the valve body 1, the metal winding pad two 10 is arranged between the valve cover 9 and the valve body 1, a bracket 18 is connected to the upper part of the valve cover 9, a valve rod 11 movably penetrates through the valve cover 9, the valve seat assembly 8 is arranged on a runner of the valve body 1, the ball 2 in contact with the valve seat assembly 8 is rotationally arranged in the valve body 1, the ball 2 is hollow, the lower end of the valve rod 11 extends into the ball 2, the upper part of the ball 2 is provided with the collision assembly in contact with the valve rod 11, the valve rod 11 rotates through the collision assembly transmission ball 2, the limiting piece 32 for limiting the valve rod 11 is arranged on the upper part of the ball 2, and a gap exists between the limiting piece 32 and the valve rod 11, so that the valve rod 11 is ensured to have a movable space.
As shown in fig. 3 and 6, the valve seat assembly 8 comprises an extension tube and a valve body, the extension tube is welded on the runner of the valve body 1, one side of the extension tube, which is close to the ball body 2, is welded with the valve body which is in contact with the ball body 2 to be watertight, a V-shaped notch is formed in the inner side of one end of the valve body welded with the extension tube, and the V-shaped notch is used for absorbing thermal stress generated during welding, so that deformation of the valve seat and the extension tube cannot be influenced.
As shown in fig. 2 and 7, the abutting component comprises a second shaft sleeve 31 and a rolling shaft 30, the second shaft sleeve 31 is symmetrically welded on the inner side of the upper part of the sphere 2, the rolling shaft 30 is rotatably penetrated through the second shaft sleeve 31, and two parallel wedge-shaped surfaces are arranged at the lower end of the valve rod 11 and are used for extruding the rolling shaft 30.
As shown in fig. 2 and 3, the valve further comprises a bottom cover 3, a first metal winding pad 6, an adjusting pad 4 and a ball sleeve 5, the bottom cover 3 is connected to the lower portion of the valve body 1, the first metal winding pad 6 is arranged between the bottom cover 3 and the valve body 1, the adjusting pad 4 for adjusting the height of the ball 2 to align the center of the ball 2 with the center of the valve body 1 is arranged on the upper portion of the bottom cover 3, the ball sleeve 5 is arranged on the upper portion of the adjusting pad 4, the lower portion of the ball 2 protrudes to form a cylindrical portion, the cylindrical portion rotates to penetrate through the ball sleeve 5, and the adjusting pad 4 is used for replacing according to the abrasion degree and the penetration degree of the cylindrical portion into the ball sleeve 5.
Placing the valve body 1 horizontally, accurately installing the valve seat assembly 8 into the valve body 1 and completing welding with the valve body 1; the ball sleeve 5, the adjusting pad 4 and the metal winding pad I6 are arranged at the lower end of the valve body 1, the bottom cover 3 is arranged, and the connecting piece I7 is screwed; the rolling shaft 30 and the shaft hole at the upper end of the ball body 2 are sleeved with the rolling shaft 30, and then spot welding is performed on the position of the top end outside the sleeve of the rolling shaft 30, so that the rolling shaft 30 can smoothly rotate in the shaft sleeve before and after spot welding; then, the limiting pieces 32 are arranged in threaded holes at two ends of the shaft hole on the ball body 2, and the limiting pieces 32 at two sides are adjusted to be deep into the shaft hole and are positioned at symmetrical positions, so that the limiting pieces 32 at two sides can be positioned at the center of the shaft hole on the ball body 2 when the valve rod 11 is assembled, a certain gap is reserved between the limiting pieces 32 at two sides and the valve rod 11, and the valve rod 11 is ensured to have a movable gap; and then the lower shaft of the ball body 2 is aligned with the inner hole of the ball shaft sleeve 5 and is arranged in the valve body 1, the center line of the flow channel of the ball body 2 is overlapped with the center line of the flow channel of the valve body 1 through rotary adjustment, the sealing surface of the ball body 2 can be completely attached to the sealing surface of the valve seat assembly 8, and the upper and lower positions of the ball body 2 can be adjusted by modifying the thickness of the adjusting pad 4 if necessary.
Example 3: on the basis of embodiment 2, as shown in fig. 2, 3 and 8, the valve cover further comprises a first shaft sleeve 28, a packing pad 12, a graphite packing 13, a packing pressing sleeve 14, a sliding bearing 15, a packing pressing plate 16 and a limit screw, wherein the lower part of the valve cover 9 is connected with the first shaft sleeve 28 positioned in the valve cover, the packing pad 12 is arranged on the first shaft sleeve 28, the graphite packing 13 is arranged on the packing pad 12, the packing pressing sleeve 14 is slidably arranged on the upper part of the valve cover 9, the packing pressing sleeve 14 is used for pressing the graphite packing 13, the sliding bearing 15 sleeved on the valve rod 11 is arranged on the inner side of the packing pressing sleeve 14, the upper side of the valve cover 9 is connected with the packing pressing plate 16 in contact with the packing pressing sleeve 14, the valve rod 11 movably penetrates through the packing pressing plate 16, the first shaft sleeve 28 is in threaded connection with the valve cover 9, and the eccentric position of the first shaft sleeve 28 is connected with the valve cover 9 through the limit screw.
Filling a valve cover 9 with a packing pad 12 and a graphite packing 13 in sequence, filling a packing pressing sleeve 14 (a sliding bearing 15 is arranged in the packing pressing sleeve 14) and a packing pressing plate 16 above the graphite packing 13, and screwing a stud nut (screwing is not needed firstly, because the valve rod 11 needs to be adjusted when a guide pin 35 is arranged at the back); the bracket 18 is mounted to the valve cap 9 and the stud nut is tightened, ensuring a seal at the valve stem 11 by the flexible graphite packing 13.
As shown in fig. 2, the bottom cover 3 is detachably connected to the valve body 1 through a first connecting piece 7, the packing pressing plate 16 is detachably connected to the valve cover 9 through a second connecting piece 17, the pneumatic actuator 20 is detachably connected to the bracket 18 through a third connecting piece 21, the valve cover 9 is detachably connected to the valve body 1 and the bracket 18 through a fifth connecting piece 27 and a fourth connecting piece 26 respectively, and the limiting piece 32, the first connecting piece 7, the second connecting piece 17, the third connecting piece 21, the fourth connecting piece 26 and the fifth connecting piece 27 are composed of bolts and nuts.
The foregoing examples have shown only the preferred embodiments of the invention, which are described in more detail and are not to be construed as limiting the scope of the invention. It should be noted that modifications, improvements and substitutions can be made by those skilled in the art without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (10)
1. The utility model provides a pneumatic track ball valve with shock resistance function, a serial communication port, including the valves, support (18), valve rod (11), guide pin (35), pneumatic actuator (20) and shock-resistant supporting component, valves upper portion is equipped with support (18), support (18) middle part activity is run through has valve rod (11) that are used for controlling valves switching, it has spiral guide slot to open on valve rod (11), be equipped with guide pin (35) of embedding spiral guide slot on support (18), support (18) upper portion is connected with pneumatic actuator (20) that are used for driving valve rod (11) to open and close valve group, connecting axle (19) of pneumatic actuator (20) link to each other with valve rod (11) activity through low friction force transmission, low friction force transmission supports valve rod (11) and rotates alone, be equipped with shock-resistant supporting component on support (18).
2. The pneumatic track ball valve with the shock resistance function according to claim 1, wherein the shock resistance support assembly comprises a bearing sleeve (33), a second inner hexagon screw (37), a bearing gland (34), a friction reducing gasket (36) and a needle bearing (38), the bearing sleeve (33) penetrates through the position of the support (18) provided with the guide pin (35), the guide pin (35) movably penetrates through one end of the bearing sleeve (33), the other end of the bearing sleeve (33) is connected with the bearing gland (34) through the second inner hexagon screw (37), one side, close to the guide pin (35), of the bearing gland (34) is provided with the friction reducing gasket (36) in contact with the guide pin (35), and the needle bearing (38) surrounding the guide pin (35) is arranged on the inner side of the bearing sleeve (33).
3. The pneumatic track ball valve with the shock resistance function according to claim 1, wherein the low friction force driver comprises a shoulder, a shell (23), a first inner hexagon screw (25), a split ring (24), a thrust cylindrical roller bearing (22) and a limit rib, the upper end of the valve rod (11) is provided with a limit groove, the lower part of the connecting shaft (19) is provided with the shoulder, two opposite shells (23) are surrounded between the valve rod (11) and the connecting shaft (19), the two opposite shells (23) are connected through the first inner hexagon screw (25), the inner side of the shell (23) is provided with the split ring (24) embedded with the limit groove and the two thrust cylindrical roller bearings (22) respectively positioned at the upper side and the lower side of the split ring (24), the upper thrust cylindrical roller bearing (22) is positioned below the shoulder, the lower thrust cylindrical roller bearing (22) is sleeved on the valve rod (11), the inner side of the bracket (18) is provided with the limit rib, the outer side of the shell (23) is provided with the limit groove, and the limit groove slides on the limit rib and the limit rib is mutually limited with the limit groove.
4. The pneumatic track ball valve with the shock resistance function according to claim 2, wherein the shock resistance support assembly further comprises a spacer (39), two or more needle bearings (38) are arranged, and the spacer (39) with the isolation protection function is arranged between every two adjacent needle bearings (38).
5. The pneumatic track ball valve with shock resistance according to claim 1, wherein the valve group comprises a valve cover (9), a metal winding pad two (10), a valve seat assembly (8), a ball body (2), a collision assembly and a limiting piece (32), the valve cover (9) is connected to the upper portion of the valve body (1), the metal winding pad two (10) is arranged between the valve cover (9) and the valve body (1), the support (18) is connected to the upper portion of the valve cover (9), the valve seat assembly (8) is arranged on a runner of the valve body (1), the ball body (2) contacted with the valve seat assembly (8) is rotationally arranged in the valve body (1), the lower end of the valve rod (11) extends into the ball body (2), the collision assembly contacted with the valve rod (11) is arranged on the upper portion of the ball body (2), the valve rod (11) is driven to rotate through the collision assembly, the limiting piece (32) used for limiting the valve rod (11) is arranged on the upper portion of the ball body (2), and a gap exists between the limiting piece (32) and the valve rod (11).
6. The pneumatic track ball valve with the shock resistance function according to claim 5, wherein the valve seat assembly (8) comprises an extension pipe and a valve body, the extension pipe is welded on a runner of the valve body (1), one side of the extension pipe, which is close to the ball body (2), is welded with the valve body which is in contact with the ball body (2) to be watertight, a V-shaped notch is formed in the inner side of one welded end of the valve body and the extension pipe, and the V-shaped notch is used for absorbing thermal stress generated during welding.
7. The pneumatic track ball valve with impact resistance according to claim 5, wherein the abutting component comprises a second shaft sleeve (31) and a rolling shaft (30), the second shaft sleeve (31) is symmetrically welded on the inner side of the upper part of the ball body (2), the rolling shaft (30) is rotatably penetrated through the second shaft sleeve (31), and two parallel wedge-shaped surfaces are arranged at the lower end of the valve rod (11) and used for extruding the rolling shaft (30).
8. The pneumatic track ball valve with the shock resistance according to claim 1, further comprising a first shaft sleeve (28), a packing pad (12), graphite packing (13), a packing pressing sleeve (14), a sliding bearing (15), a packing pressing plate (16) and a limit screw, wherein the lower part of the valve cover (9) is connected with the first shaft sleeve (28) positioned in the first shaft sleeve, the packing pad (12) is arranged on the first shaft sleeve (28), the graphite packing (13) is arranged on the packing pad (12), the packing pressing sleeve (14) is slidably arranged on the upper part of the valve cover (9), the packing pressing sleeve (14) is used for pressing the graphite packing (13), the sliding bearing (15) sleeved on the valve rod (11) is arranged on the inner side of the packing pressing sleeve (14), the upper side of the valve cover (9) is connected with the packing pressing plate (16) in contact with the packing pressing sleeve (14), the first shaft sleeve (28) is in threaded connection with the valve cover (9), and/or the eccentric position of the first shaft sleeve (28) is connected with the valve cover (9) through the limit screw.
9. The pneumatic track ball valve with the impact resistance function according to claim 6, further comprising a rubber ring and an O-shaped ring (40), wherein the rubber ring for watertight is connected to one side of the valve body, which is contacted with the ball body (2), the O-shaped ring (40) is arranged between the guide pin (35) and the bearing sleeve (33), and the O-shaped ring (40) plays a role in dust prevention.
10. The pneumatic track ball valve with the shock resistance function according to claim 5, further comprising a bottom cover (3), a first metal winding pad (6), an adjusting pad (4) and a ball sleeve (5), wherein the bottom cover (3) is connected to the lower portion of the valve body (1), the first metal winding pad (6) is arranged between the bottom cover (3) and the valve body (1), the adjusting pad (4) for adjusting the height of the ball body (2) is arranged on the upper portion of the bottom cover (3), the ball sleeve (5) is arranged on the upper portion of the adjusting pad (4), the lower portion of the ball body (2) protrudes to form a cylindrical portion, and the cylindrical portion rotates to penetrate through the ball sleeve (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310979744.1A CN116697082A (en) | 2023-08-07 | 2023-08-07 | Pneumatic track ball valve with shock resistance function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310979744.1A CN116697082A (en) | 2023-08-07 | 2023-08-07 | Pneumatic track ball valve with shock resistance function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116697082A true CN116697082A (en) | 2023-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310979744.1A Pending CN116697082A (en) | 2023-08-07 | 2023-08-07 | Pneumatic track ball valve with shock resistance function |
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| Country | Link |
|---|---|
| CN (1) | CN116697082A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117781263A (en) * | 2024-02-26 | 2024-03-29 | 艾坦姆流体控制技术(山东)有限公司 | Adjustable temperature and pressure reducer assembly |
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