CN112728151A - Ball valve with multiple sealing track structure - Google Patents
Ball valve with multiple sealing track structure Download PDFInfo
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- CN112728151A CN112728151A CN202011642158.0A CN202011642158A CN112728151A CN 112728151 A CN112728151 A CN 112728151A CN 202011642158 A CN202011642158 A CN 202011642158A CN 112728151 A CN112728151 A CN 112728151A
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- ball
- guide pin
- sealing
- bearing
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- 238000007789 sealing Methods 0.000 title claims abstract description 76
- 238000012856 packing Methods 0.000 claims abstract description 43
- 238000003825 pressing Methods 0.000 claims abstract description 10
- 239000004519 grease Substances 0.000 claims description 12
- 125000006850 spacer group Chemical group 0.000 claims description 12
- 210000004907 gland Anatomy 0.000 claims description 9
- 238000012544 monitoring process Methods 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 230000002035 prolonged effect Effects 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000002131 composite material Substances 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 7
- 230000000670 limiting effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000004429 Calibre Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
Images
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
- F16K5/0663—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
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
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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
- 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
-
- 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
- F16K5/0689—Packings between housing and plug
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
Abstract
The invention discloses a ball valve with a multi-sealing track structure, which relates to the technical field of ball valves and comprises a valve body, a valve cover, a ball body guide pin, a valve seat assembly, a valve rod, a packing press sleeve, a guide pin bearing, a lower support bearing and a guide bearing, wherein the ball body guide pin is arranged at one end, close to the valve cover, of the ball body; the packing pressing sleeve and the guide bearing are rotationally connected with the valve rod; the guide pin and the guide pin bearing are positioned on one end, close to the ball body, of the valve cover; the lower support bearing covers the bottom of the ball body. The invention has the following beneficial effects: (1) the composite multiple sealing structure in the form of double soft and hard sealing greatly improves the sealing performance and the service life of the valve. (2) The valve rod of the large-diameter valve adopts an integrated valve rod, so that the operation reliability of the valve is improved. (3) The valve rod guide rail pin shaft is arranged below and close to the ball body, so that the service life of the guide pin is greatly prolonged. (4) The lower part of the sphere is supported by the spherical surface, so that the supporting area is increased, and the support is not easy to lose efficacy.
Description
Technical Field
The invention relates to the technical field of ball valves, in particular to a ball valve with a multi-seal track structure.
Background
Ball valves come out in the 50 th of the 20 th century, and with the rapid development of science and technology and the continuous improvement of production processes and product structures, the ball valves have rapidly developed into a main valve class in short 40 years. The use of ball valves is increasing year by year in countries with industrially developed western industries. Existing ball valves are generally: 1. a single soft or hard seal; 2. the valve rod of the large-caliber valve adopts a two-section type; 3. the valve rod guide rail pin shaft is arranged on the upper part and is far away from the ball body; 4. the lower part of the ball body is supported by adopting line contact, and the main defects are that: 1. a single soft or hard seal, which is susceptible to leakage; 2. the valve rod of the large-diameter valve adopts two sections, and the joint of the valve rods at two ends is easy to lose efficacy; 3. the valve rod guide rail pin shaft is arranged on the upper part and is far away from the ball body, and the guide pin is easy to lose efficacy, so that the valve cannot be opened or closed; 4. the lower part of the ball body is supported by adopting line contact, and the ball body is easy to lose efficacy, so that the valve cannot be opened or closed.
Disclosure of Invention
1. Technical problem to be solved by the invention
Aiming at the technical problems, the invention provides a ball valve with a multi-seal track structure, which adopts a composite multi-seal structure of double soft seals and double hard seals, thereby greatly prolonging the service life of the valve; the valve rod of the large-diameter valve adopts an integrated valve rod, so that the operation reliability of the valve is improved; the valve rod guide rail pin shaft is arranged below and is close to the ball body, so that the service life of the guide pin is greatly prolonged; the lower part of the sphere is supported by the spherical surface, so that the supporting area is increased, and the support is not easy to lose efficacy.
2. Technical scheme
In order to solve the problems, the technical scheme provided by the invention is as follows:
a ball valve with a multi-seal track structure comprises a valve body, a valve cover, a ball body guide pin, a valve seat assembly, a valve rod, a packing press sleeve, a guide pin bearing, a lower support bearing and a guide bearing, wherein the valve body is fixedly connected with the valve cover; the packing pressing sleeve and the guide bearing are rotationally connected with the valve rod; the guide pin and the guide pin bearing are positioned at one end, close to the ball, of the valve cover, and an arc-shaped groove matched with the guide pin is formed in the corresponding position of the valve rod; the lower support bearing is positioned at the bottom of the ball body, and the bottom of the ball body is coated by the lower support bearing. The valve body is used for passing through the medium, and the spheroid is rotated by the valve rod and is driven and rotate, and the spheroid has the through-hole that link up, rotates to certain angle, and this through-hole is not sealed by the valve body, and this through-hole of accessible medium rotatory to another angle is closed promptly, and the valve is closed. The sealing ring and the ball body are sealed by a soft sealing structure, the valve seat is made of metal, the hardness is high, and the sealing ring and the ball body are of a hard sealing structure, so that a double soft and hard sealing structure is formed. The monitoring channel is communicated with the valve seat and the sealing surface of the sealing ring, and can detect whether leakage occurs and the leakage degree in real time through an external leakage detecting port. The packing pressing sleeve and the guide bearing form a double-guide structure of the valve rod, so that the stability of the valve rod during movement is ensured, and the valve is smoothly opened and closed. The guide pin and the guide pin bearing are arranged below and close to the ball body. The valve rod rotates in the circumferential direction by axial movement, so that the guide pin, the guide pin bearing and the valve rod between the ball bodies have larger torque and tensile stress, the distance is reduced by the underlying guide pin, the risk of valve rod shaking or fatigue is reduced, the operating torque of the valve is reduced, the friction force at the pin shaft is reduced, the service life of the guide pin is greatly prolonged, and the operating reliability is improved. The lower part of the sphere is supported by the spherical surface coating, and the sphere is more stable under the high-pressure working condition.
Optionally, an O-ring and a cladding pad are arranged at the joint of the guide pin and the guide pin bearing. The O-shaped ring and the coating pad are used for improving the sealing performance and the buffering performance of the guide pin and the guide pin bearing, and the service life is prolonged.
Optionally, one end of the valve cover, which is far away from the ball body, is provided with a packing pad, a spacer ring, packing and a packing gland, the packing pad, the spacer ring, the packing and the packing gland are stacked to form a sealing structure with the valve rod, and the end is fixedly connected with a support. The packing gasket and the packing are pressed to be in contact with the valve rod and used for improving the sealing performance, the spacer ring is used for conveniently adding grease, and the packing gland is used for pressing the packing gasket and the packing and preventing the packing from flying out.
Optionally, the dual soft and hard sealing structure is a valve seat wrapping sealing ring, the valve seat and the sealing ring are both in contact with the ball body, the monitoring channel is communicated with a cavity formed by the valve seat and the valve body from the sealing ring, and the cavity is communicated to an external leak detection port. The contact surfaces of the sealing ring, the valve seat and the ball body are sealing surfaces, the sealing effect of the sealing surfaces directly influences the performance of the valve, and the double soft and hard sealing structure can achieve high sealing performance.
Optionally, a sealing gasket is arranged on a sealing surface between the valve cover and the valve body. The sealing gasket is used for improving the sealing performance and preventing leakage.
Optionally, the two ends of the arc-shaped groove form an angle of 90 degrees in the cross-sectional direction of the valve rod. The guide pin moves in the arc-shaped groove, the valve rod rotates in the circumferential direction through axial movement, the rotating angle of the valve rod is determined by the shape of the arc-shaped groove, and the 90-degree angle is the opening and closing angle of the ball body.
Optionally, valve rod one end stretches into the spheroid, spheroid uide pin joint is in the valve rod, the joint one end cross-section of valve rod is the rectangle. The ball body guide pin is a limiting structure of the ball body, the valve rod rotates, and the ball body guide pin rotates together to drive the ball body to rotate.
Optionally, the edge of the clamping end of the valve rod is provided with a chamfer structure. The chamfer structure is used for matching the internal shape of the ball body, and the valve rod is prevented from being clamped.
Optionally, elastic cylindrical pins are arranged between the valve cover and the valve body, between the valve cover and the support and at the other end of the support.
Optionally, a grease injection valve and a one-way valve are arranged at the horizontal position of the spacer ring of the valve cover. The grease injection valve is used for adding grease into the filler, and the one-way valve is used for preventing the internal grease from leaking.
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:
(1) the utility model provides a multiple sealing track structure ball valve, the compound multiple seal structure of dual soft or hard sealed form has improved the sealing performance and the life of valve greatly.
(2) The embodiment of the application provides a multiple sealed track structure ball valve, heavy-calibre valve rod adopts the integral type valve rod, has improved the reliability of valve operation.
(3) The utility model provides a multiple sealing track structure ball valve, valve rod guide rail round pin axle put down, are close to the spheroid, have improved the life of uide pin greatly.
(4) According to the ball valve with the multi-seal track structure, the lower portion of the ball body is supported by the spherical surface, so that the supporting area is increased, and the supporting is not prone to failure.
Drawings
Fig. 1 is a full sectional view of a ball valve with a multi-seal track structure according to an embodiment of the present invention;
fig. 2 is a half sectional view of a ball valve with a multi-seal track structure according to an embodiment of the present invention;
fig. 3 is a partial sectional view of a ball valve having a multi-seal track structure according to an embodiment of the present invention;
fig. 4 is a schematic view of an external leak detection port of a ball valve with a multi-seal track structure according to an embodiment of the present invention.
1a3, valve body; 2a, a valve cover; 3e, a sphere; 3e1, ball guide pin; 4a, a valve seat assembly; 4a1, valve seat; 4b, a sealing ring; 4c, monitoring a channel; 4d, an external leak detection port; 5a5, valve stem; 5e, a guide pin; 5e1, O-ring; 5e2, wrapping pad; 5f, a guide pin bearing; 6a, a filler pad; 6b, packing and pressing; 6c, a packing gland; 6d, filling; 6f, spacer rings; 7. a support; 8f1, lower support bearing; 8f2, guide bearing; 12a, a gasket; 22c, a resilient cylindrical pin; 25a, a grease injection valve; 25c, one-way valve.
Detailed Description
For a further understanding of the present invention, reference will now be made in detail to the embodiments illustrated in the drawings.
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings. The terms first, second, and the like in the present invention are provided for convenience of describing the technical solution of the present invention, and have no specific limiting effect, but are all generic terms, and do not limit the technical solution of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular 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. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. The technical solutions in the same embodiment and the technical solutions in different embodiments can be arranged and combined to form a new technical solution without contradiction or conflict, and the technical solutions are within the scope of the present invention.
Examples
With reference to fig. 1-4, the ball valve with the multi-seal track structure comprises a valve body 1a3, a valve cover 2a, a ball body 3e, a ball body guide pin 3e1, a valve seat assembly 4a, a valve rod 5a5, a packing pressing sleeve 6b, a guide pin 5e, a guide pin bearing 5f, a lower support bearing 8f1 and a guide bearing 8f2, wherein the valve body 1a3 and the valve cover 2a are fixedly connected in a stud and nut mode, and the ball valve is convenient and rapid to use and low in cost. The spheroid 3e is located valve body 1a3, valve rod 5a5 one end stretches into spheroid 3e, spheroid uide pin 3e1 joint is in valve rod 5a5, the joint one end cross-section of valve rod 5a5 is the rectangle. One end of the valve rod 5a5 has a certain arc bending for matching the shape inside the sphere 3e after rotation, so as to avoid the valve failure caused by being blocked. The edge of the clamping end of the valve rod 5a5 is provided with a chamfer structure. The chamfer configuration is intended to match the internal shape of the ball 3e and avoid jamming of the valve stem 5a 5. The valve body 1a3 is used for passing through the medium, and the spheroid 3e is rotated by the rotation of valve rod 5a5 and is driven and rotates, and the spheroid 3e has a through-hole that link up, rotates to certain angle, and this through-hole is not sealed by valve body 1a3, and accessible medium rotates to another angle this through-hole and is closed, and the valve is closed. The valve rod 5a5 is provided with a reverse seal and a blowout prevention structure.
One end of the sphere 3e, which is close to the valve cap 2a, is provided with a sphere guide pin 3e1, the sphere guide pin 3e1 is a limiting structure of the sphere 3e, the valve rod 5a5 rotates, and the sphere guide pin 3e1 rotates together to drive the sphere 3e to rotate. The valve seat assembly 4a is in sealing contact with the ball 3e, a sealing ring 4b and a monitoring channel 4c are arranged on a sealing surface, and the sealing ring 4b is positioned in the middle of the valve seat 4a1 to form a double soft and hard sealing structure. The double soft and hard sealing structure is characterized in that a sealing ring 4b is wrapped by a valve seat 4a1, the valve seat 4a1 and the sealing ring 4b are both in contact with a ball body 3e, the monitoring channel 4c penetrates from the sealing ring 4b to a cavity formed by the valve seat 4a1 and a valve body 1a3, and the cavity is communicated to an external leakage detection port 4 d. The contact surfaces of the sealing ring 4b, the valve seat 4a1 and the ball 3e are sealing surfaces, the sealing effect of the sealing surfaces directly influences the performance of the valve, and the double soft and hard sealing structure can achieve extremely high sealing performance. The external leak detection port 4d can detect a leak condition using a specific tool.
The packing pressing sleeve 6b and the guide bearing 8f2 are rotationally connected with the valve rod 5a 5; the guide pin 5e and the guide pin bearing 5f are positioned at one end of the valve cover 2a close to the ball body 3e, and an arc-shaped groove matched with the guide pin 5e is arranged at the corresponding position on the valve rod 5a 5. The arc-shaped groove has both ends at 90 degrees in the sectional direction of the valve rod 5a 5. The guide pin 5e moves in the arc-shaped groove, the valve rod 5a5 rotates in the circumferential direction by the axial movement, so the shape of the arc-shaped groove determines the rotation angle of the valve rod 5a5, and 90 degrees is the opening and closing angle of the ball 3 e.
The lower support bearing 8f1 is located at the bottom of the sphere 3e, the bottom of the sphere 3e is provided with a cylindrical protrusion, and the lower support bearing 8f1 covers the bottom protrusion of the sphere 3 e. The lower support of the sphere 3e is supported by spherical coating, and the sphere 3e is more stable under high-pressure working conditions.
The sealing ring 4b and the ball 3e are sealed by a soft sealing structure, the valve seat 4a1 is made of metal and has higher hardness, and the sealing ring is a hard sealing structure to form a double soft and hard sealing structure. The monitoring passage 4c communicates with the valve seat 4a1 and the sealing surface of the sealing ring 4b, and can detect whether leakage occurs and the leakage degree in real time through the external leakage detecting port 4 d. The packing pressing sleeve 6b and the guide bearing 8f2 form a double-guide structure of the valve rod 5a5, so that the stability of the valve rod 5a5 in movement is ensured, and the valve is opened and closed smoothly. The guide pin 5e and the guide pin bearing 5f are disposed downward, close to the ball 3 e. Because the valve rod 5a5 rotates in the circumferential direction by axial movement, the guide pin 5e and the valve rod 5a5 between the guide pin bearing 5f and the ball 3e have larger torque and tensile stress, and the distance is reduced by the underlying guide pin 5e, so that the risk of shaking or fatigue of the valve rod 5a5 is reduced, the valve operation torque is reduced, the friction force at the pin shaft is reduced, the service life of the guide pin 5e is greatly prolonged, and the operation reliability is improved. And an O-shaped ring 5e1 and a coating pad 5e2 are arranged at the joint of the guide pin 5e and the guide pin bearing 5 f. The O-shaped ring 5e1 and the coating pad 5e2 are used for improving the sealing performance and the buffering performance of the guide pin 5e and the guide pin bearing 5f, and prolonging the service life.
One end of the valve cover 2a, which is far away from the ball body 3e, is provided with a packing pad 6a, a spacer ring 6f, a packing 6d and a packing gland 6c, the packing pad 6a, the spacer ring 6f, the packing 6d and the packing gland 6c are stacked to form a sealing structure with the valve rod 5a5, and the end is fixedly connected with a support 7. The packing pad 6a and the packing 6d are pressed into contact with the valve stem 5a5 for improving sealing performance, the spacer ring 6f is used to facilitate grease addition, and the packing gland 6c is used to press the packing pad 6a and the packing 6d and prevent the packing 6d from flying out. And a sealing gasket 12a is arranged at the sealing surface between the valve cover 2a and the valve body 1a 3. The gasket 12a is used to improve sealing performance and prevent leakage. Elastic cylindrical pins 22c are arranged between the valve cap 2a and the valve body 1a3, between the valve cap 2a and the bracket 7 and at the other end of the bracket 7. The horizontal position of the spacer ring 6f of the valve cover 2a is provided with a grease injection valve 25a and a one-way valve 25 c. The grease filling valve 25a is used for adding grease into the packing 6d, and the check valve 25c is used for preventing the internal grease from leaking to the outside.
The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.
Claims (10)
1. A ball valve with a multi-seal track structure is characterized by comprising a valve body, a valve cover, a ball body guide pin, a valve seat assembly, a valve rod, a packing pressing sleeve, a guide pin bearing, a lower support bearing and a guide bearing, wherein the valve body is fixedly connected with the valve cover; the packing pressing sleeve and the guide bearing are rotationally connected with the valve rod; the guide pin and the guide pin bearing are positioned at one end, close to the ball, of the valve cover, and an arc-shaped groove matched with the guide pin is formed in the corresponding position of the valve rod; the lower support bearing is positioned at the bottom of the ball body, and the bottom of the ball body is coated by the lower support bearing.
2. The ball valve with multiple sealing track structures as claimed in claim 1, wherein the joint of the guide pin and the guide pin bearing is provided with an O-ring and a coating pad.
3. The ball valve with multiple sealing track structures as claimed in claim 1, wherein the end of the valve cover away from the ball body is provided with a packing pad, a spacer ring, a packing and a packing gland, the packing pad, the spacer ring, the packing and the packing gland are stacked to form a sealing structure with the valve stem, and a bracket is fixedly connected to the end.
4. The ball valve with multiple sealing track structures as claimed in claim 1, wherein the double soft and hard sealing structure is a valve seat wrapping a sealing ring, the valve seat and the sealing ring both contact with the ball body, the monitoring channel penetrates from the sealing ring to a cavity formed by the valve seat and the valve body, and the cavity is communicated to an external leak detection port.
5. The ball valve with multiple sealing track structures as claimed in claim 1, wherein a sealing gasket is arranged at the sealing surface between the valve cover and the valve body.
6. The ball valve of claim 1, wherein the two ends of the arc-shaped groove are 90 degrees in the cross-sectional direction of the valve stem.
7. The ball valve with the multi-seal track structure as claimed in claim 1, wherein one end of the valve rod extends into the ball body, the ball body guide pin is clamped on the valve rod, and the section of the clamped end of the valve rod is rectangular.
8. The ball valve with multiple sealing track structures as claimed in claim 7, wherein the edge of the clamping end of the valve rod is provided with a chamfer structure.
9. The ball valve with multiple sealing track structures as claimed in any one of claims 1 to 8, wherein elastic cylindrical pins are arranged between the valve cover and the valve body, between the valve cover and the bracket and at the other end of the bracket.
10. The ball valve with multiple sealing track structures as claimed in any one of claims 1 to 8, wherein the horizontal position of the spacer ring of the valve cover is provided with a grease injection valve and a one-way valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011642158.0A CN112728151A (en) | 2020-12-31 | 2020-12-31 | Ball valve with multiple sealing track structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011642158.0A CN112728151A (en) | 2020-12-31 | 2020-12-31 | Ball valve with multiple sealing track structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112728151A true CN112728151A (en) | 2021-04-30 |
Family
ID=75609161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011642158.0A Pending CN112728151A (en) | 2020-12-31 | 2020-12-31 | Ball valve with multiple sealing track structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112728151A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113309871A (en) * | 2021-06-07 | 2021-08-27 | 自贡自高阀门有限公司 | Valve rod guide structure of forced sealing ball valve |
| CN116697082A (en) * | 2023-08-07 | 2023-09-05 | 艾坦姆流体控制技术(山东)有限公司 | Pneumatic track ball valve with shock resistance function |
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|---|---|---|---|---|
| CN1884881A (en) * | 2006-07-03 | 2006-12-27 | 徐林斌 | Swinging ball valve |
| CN202402688U (en) * | 2011-12-31 | 2012-08-29 | 上海开维喜阀门集团有限公司 | Forced seal ball valve |
| CN102734484A (en) * | 2011-03-31 | 2012-10-17 | 上海耐莱斯·詹姆斯伯雷阀门有限公司 | Lifting rod-type ball valve |
| CN203309176U (en) * | 2013-06-20 | 2013-11-27 | 球豹阀门有限公司 | Rail-mounted hard seal ball valve |
| CN204164409U (en) * | 2014-10-10 | 2015-02-18 | 方正阀门集团有限公司 | Rail mounted ultra low temperature hard seal fixing ball valve |
| CN105864451A (en) * | 2016-06-12 | 2016-08-17 | 成都成高阀门有限公司 | Detachable valve seat sealing structure and track ball valve with same |
| CN207111974U (en) * | 2017-07-18 | 2018-03-16 | 浙江国成阀门有限公司 | Eccentric half-ball valve with soft or hard dual-seal |
| CN108980398A (en) * | 2018-09-20 | 2018-12-11 | 四川凯茨阀门制造有限公司 | A kind of compact-sized double-seal ball valve valve seat |
| CN111828668A (en) * | 2019-04-17 | 2020-10-27 | 成都成高阀门有限公司 | High-performance valve seat sealing structure and track type ball valve comprising same |
| CN112145739A (en) * | 2020-10-16 | 2020-12-29 | 太仓优尼泰克精密机械有限公司 | Gas-supply pipe on-line monitoring lifting rod type ball valve |
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| CN203309176U (en) * | 2013-06-20 | 2013-11-27 | 球豹阀门有限公司 | Rail-mounted hard seal ball valve |
| CN204164409U (en) * | 2014-10-10 | 2015-02-18 | 方正阀门集团有限公司 | Rail mounted ultra low temperature hard seal fixing ball valve |
| CN105864451A (en) * | 2016-06-12 | 2016-08-17 | 成都成高阀门有限公司 | Detachable valve seat sealing structure and track ball valve with same |
| CN207111974U (en) * | 2017-07-18 | 2018-03-16 | 浙江国成阀门有限公司 | Eccentric half-ball valve with soft or hard dual-seal |
| CN108980398A (en) * | 2018-09-20 | 2018-12-11 | 四川凯茨阀门制造有限公司 | A kind of compact-sized double-seal ball valve valve seat |
| CN111828668A (en) * | 2019-04-17 | 2020-10-27 | 成都成高阀门有限公司 | High-performance valve seat sealing structure and track type ball valve comprising same |
| CN112145739A (en) * | 2020-10-16 | 2020-12-29 | 太仓优尼泰克精密机械有限公司 | Gas-supply pipe on-line monitoring lifting rod type ball valve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113309871A (en) * | 2021-06-07 | 2021-08-27 | 自贡自高阀门有限公司 | Valve rod guide structure of forced sealing ball valve |
| CN116697082A (en) * | 2023-08-07 | 2023-09-05 | 艾坦姆流体控制技术(山东)有限公司 | Pneumatic track ball valve with shock resistance function |
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