阅读说明：本技术 一种v型球阀 (V-shaped ball valve ) 是由 徐国华 于 2019-11-16 设计创作，主要内容包括：本发明涉及球阀技术领域,尤其涉及的是一种V型球阀。本发明一种V型球阀,包括阀体、阀杆、阀瓣、阀座、驱动装置、球形瓣和安装于阀体前侧的拆装结构。通过拆装结构可将与阀瓣可拆卸安装的球形瓣进行在线拆卸损坏的球形瓣、安装新的球形瓣,有效解决阀门球体密封面被磨损后需要停止运行管道、拆卸阀门进行维修,造成人力、物力的大量浪费的问题。(The invention relates to the technical field of ball valves, in particular to a V-shaped ball valve. The invention relates to a V-shaped ball valve which comprises a valve body, a valve rod, a valve clack, a valve seat, a driving device, a spherical clack and a dismounting structure arranged on the front side of the valve body. Can dismantle the spherical lamella of damage, install new spherical lamella on line with valve clack demountable installation's spherical lamella through dismouting structure, effectively solve the sealed face of valve spheroid and need the shut down pipeline, dismantle the valve and maintain after being worn and torn, cause the problem of a large amount of wastes of manpower, material resources.)

1. A V-shaped ball valve comprises a valve body, a valve rod, a valve clack and a valve seat; the valve clack is arranged at the inner end of the valve rod and rotates along the central axis of the valve rod along with the valve rod; an inlet cavity and an outlet cavity are arranged in the valve body, and the valve clack is positioned between the inlet cavity and the outlet cavity; the valve rod penetrates through the valve body and extends outwards to the outside of the valve body; the valve seat is arranged in the oral cavity; the method is characterized in that: the valve also comprises a dismounting structure arranged on the front side of the valve body; the outer side of the valve clack is provided with a detachable spherical clack; when the valve is closed for use, the outer spherical surface of the spherical valve is pressed against the inner side of the valve seat.

2. A V-shaped ball valve according to claim 1, wherein: the positioning screw is also included; a mounting hole is formed in the middle of the outer end face of the valve clack; the middle of the spherical petal is provided with a spherical petal outer through hole; the positioning screws are respectively matched with the mounting holes and the spherical petal outer through holes; when the valve is used, the positioning screw sequentially penetrates through the outer through hole and the mounting hole of the spherical valve, and the spherical valve is mounted on the outer side surface of the valve clack; the front side of the valve body is provided with a dismounting through hole, and the inner diameter of the dismounting through hole is not smaller than the outer diameter of the spherical valve; the dismounting structure is detachably arranged at the dismounting through opening; the inner end part of the dismounting structure is provided with a dismounting head matched with the positioning screw.

3. A V-shaped ball valve according to claim 2, wherein: an inner polygonal groove is formed in the outer side of the positioning screw; the dismounting structure comprises a guide sleeve, a pull rod and an adjusting ring; the guide sleeve is detachably arranged in the disassembly through hole; the outer side of the guide sleeve is provided with a concave step; the pull rod is sleeved inside the guide sleeve in a matching manner; the axial length of the pull rod is greater than that of the guide sleeve; the adjusting ring is arranged in the concave step through a limiting ring, and the inner wall of the adjusting ring is in threaded connection with the outer wall of the pull rod; the assembling and disassembling head is a polygonal head matched with the inner polygonal groove and is arranged on the inner end face of the pull rod.

4. A V-shaped ball valve according to claim 3, wherein: the outer end face of the valve clack is provided with two symmetrically arranged concave mounting grooves, and the mounting hole is positioned between the two concave mounting grooves; a positioning rod is arranged on the inner side of the spherical valve, an inner through hole of the spherical valve is formed in the middle of the positioning rod, and the inner diameter of the inner through hole of the spherical valve is equal to that of the mounting hole; the inner diameter of the through hole outside the spherical lobe is not less than the outer diameter of the positioning screw; each inwards concave mounting groove is internally provided with a waterproof structure which can be opened and closed, and each waterproof structure comprises a waterproof block; when the spherical valve is arranged on the valve clack, the two waterproof blocks are matched and shielded at the inner side of the outer through hole of the spherical valve, so that the positioning screw and the waterproof structure are sealed between the concave mounting groove and the inner side of the spherical valve.

5. A V-shaped ball valve according to claim 4, wherein: the dismounting structure also comprises an isolation sleeve, a mobile adjusting device and an outer sealing plate; the outer diameter of the isolation sleeve is equal to the inner diameter of the dismounting through hole, and the inner diameter of the isolation sleeve is not smaller than the outer diameter of the spherical valve; the movable adjusting device is arranged on the outer side of the valve body and connected with the outer wall of the isolating sleeve and used for driving the isolating sleeve to move inside and outside; the outer diameter of the guide sleeve is matched with the inner diameter of the isolation sleeve, and the guide sleeve is in key connection with the isolation sleeve;

the outer sealing plate is arranged on the outer side of the valve body through an adjusting screw rod assembly; the middle of the outer sealing plate is fixedly connected with the outer wall of the guide sleeve;

the waterproof structure further comprises a U-shaped rod, a return spring, a clamping block and a first compression spring; the width of the U-shaped rod is matched with the inner diameter of the concave mounting groove, and the U-shaped rod comprises a first convex rod and a second convex rod which are equal in height; the first convex rod is close to the edge of the valve clack, and the second convex rod is close to the mounting hole; the second convex rod is a wedge-shaped block with a narrow inner part and a wide outer part, and the side surface of the second convex rod facing the first convex rod is an inclined surface; the reset spring is connected and arranged between the inner side surface of the U-shaped rod and the bottom of the concave mounting groove; the fixture block is arranged between the first convex rod and the second convex rod, and a fixture block groove matched with the inner side edge of the spherical valve is formed in the outer end face of the fixture block; the waterproof block comprises a wedge-shaped part and an outer shielding part; the wedge-shaped part is positioned between the first convex rod and the second convex rod, the wedge-shaped part is a wedge-shaped block which is matched with the second convex rod and is wide in inside and narrow in outside, and the side surface close to the second convex rod is an inclined surface; the area of the outer shielding part is not less than half of the area of the outer through hole of the spherical valve; the first compression spring is connected and installed between the clamping block and the wedge-shaped part, so that the wedge-shaped part is normally abutted against the second convex rod;

the distance between the first convex rods of the two waterproof structures is not smaller than the inner diameter of the isolation sleeve, and the distance between the first convex rods of the two waterproof structures is not larger than the outer diameter of the isolation sleeve;

when the isolating sleeve moves inwards to enable the first convex rod to drive the U-shaped rod and the second convex rod to move inwards to the inwards concave mounting groove, the wedge-shaped parts and the outer shielding parts of the two waterproof structures move back to back along with the second convex rod to enable the positioning screw to be exposed, so that the multiple sides of the inner end part of the pull rod move inwards to be connected with the inner multiple side grooves of the positioning screw in a matched mode, and the spherical petals are disassembled and assembled;

when the spacer sleeve moves outwards, the U-shaped rod moves outwards under the action of the return spring, so that the wedge-shaped parts and the outer shielding parts of the two waterproof structures move in opposite directions along with the second convex rod and completely shield the outer through hole of the spherical valve.

6. A V-shaped ball valve according to claim 4 or 5, wherein: the inner wall of the through hole outside the spherical petal is provided with an annular groove;

a rod hole is formed in the middle of the pull rod along the axial direction of the pull rod; the rod hole is internally sleeved with an inner pull rod matched with the rod hole; the polygonal head is arranged on the inner end surface of the inner pull rod; an inner flange which is radially inward is arranged at the inner end part of the rod hole, and the inner diameter of the inner flange is not less than the outer diameter of the polygonal head; an inner sleeve is axially and inwardly arranged on the inner end face of the inner flange, and the inner diameter of the inner sleeve is equal to that of the inner flange; the side wall of the inner sleeve is provided with a connecting device, and the length of the connecting device is greater than the thickness of the side wall of the inner sleeve; the connecting device is matched with the annular groove; the distance from the connecting device to the inner end face of the inner sleeve is equal to the distance from the annular groove to the inner side face of the spherical valve; the outer diameter of the inner sleeve is not larger than the inner diameter of the through hole outside the spherical valve; the outer side of the connecting device is normally flush with the outer wall of the inner sleeve; when the multi-edge head moves inwards, the connecting device is extruded to move towards the outer wall of the inner sleeve;

a second compression spring is arranged between the inner flange and the inner end face of the inner pull rod; the second compression spring enables the polygonal head to be normally retracted in the inner sleeve, the inner flange and the rod hole;

the outer end of the inner pull rod is provided with an inner adjusting ring, the outer side of the inner adjusting ring is fixedly connected with the inner pull rod, the inner diameter of the inner side of the inner adjusting ring is matched with the outer diameter of the pull rod, and the inner side of the inner adjusting ring is in threaded connection with the outer end of the pull rod.

7. A V-shaped ball valve according to claim 5, wherein: the mobile adjusting device comprises a worm and a turbine adjusting ring; the worm is in transmission connection with the turbine adjusting ring; the inner wall of the turbine adjusting ring is in threaded connection with the outer wall of the isolating sleeve.

8. A V-shaped ball valve according to claim 5 or 7, wherein: a protective cover is arranged on the outer side of the valve body, and the inner side of the protective cover is fixed on the outer wall of the valve body; the mobile adjusting device is positioned in the protective cover.

9. A V-shaped ball valve according to claim 8, wherein: the outer end part of the protective sleeve is provided with a lug block which is outward in the radial direction; the adjusting screw assembly comprises an adjusting nut, a bolt and a pre-pressing spring; the bolt sequentially penetrates through the lug block, the outer sealing plate, the pre-pressing spring and the adjusting nut from inside to outside and is in threaded connection with the adjusting nut.

10. A V-shaped ball valve according to claim 1, wherein: the outer diameter of the valve clack is smaller than the inner diameter of the inlet cavity; the valve clack is connected with the valve rod through a key; and a lower valve rod is arranged between the lower part of the valve clack and the valve body.

Technical Field

The invention relates to the technical field of ball valves, in particular to a V-shaped ball valve.

Background

The V-shaped ball valve is widely applied to systems such as petroleum pipelines, natural gas pipelines, chemical engineering and the like. When the existing V-shaped ball valve is used, the sealing surface of the ball body is easily abraded and has poor sealing property. When the sealing surface of the ball is abraded, the pipeline needs to be stopped, the valve is disassembled for maintenance, and the ball body of the valve is replaced, so that a great deal of manpower and material resources are wasted.

Disclosure of Invention

The invention aims to overcome the defects and provide the V-shaped ball valve with the ball valve clack capable of being replaced online.

In order to achieve the purpose, the technical solution of the invention is as follows: a V-shaped ball valve comprises a valve body, a valve rod, a valve clack, a valve seat, a driving device, a support, a positioning ring, a packing, a gland and a dismounting structure arranged on the front side of the valve body.

The valve clack is arranged at the inner end of the valve rod and rotates along the central axis of the valve rod along with the valve rod; an inlet cavity and an outlet cavity are arranged in the valve body, and the valve clack is positioned between the inlet cavity and the outlet cavity; the valve rod penetrates through the valve body and extends outwards to the outside of the valve body; the valve seat is mounted in the outlet cavity.

The driving device is arranged at the upper end part of the valve rod and used for driving the valve rod to rotate. The driving device can be a worm gear, a pneumatic driving device, a hydraulic driving device, an electric device and the like. The support is arranged between the valve body and the driving device, and the lower part of the support is provided with a through hole with the inner diameter larger than that of the valve rod. Be equipped with the position circle between valve rod and the valve body, the position circle can also be equipped with position circle, well position circle and lower position circle from top to bottom in proper order, and the position circle is used for making valve rod and valve clack stable connection. The packing is filled on the positioning ring and is fixed between the valve body and the valve rod by the gland, and the valve rod can be stably installed on the valve body by the packing and the gland.

The outer side of the valve clack is provided with a detachable spherical clack; when the valve is closed for use, the outer spherical surface of the spherical valve is pressed against the inner side of the valve seat.

When the spherical valve clack rotates to the front side of the valve body along with the valve clack and the valve rod, the spherical valve clack can be disassembled and replaced through the disassembling and assembling structure, and the online replacement of the spherical valve clack of the V-shaped ball valve is realized.

Preferably, the device further comprises a positioning screw; a mounting hole is formed in the middle of the outer end face of the valve clack; the middle of the spherical petal is provided with a spherical petal outer through hole; the positioning screws are respectively matched with the mounting holes and the spherical petal outer through holes; when the valve is used, the positioning screw sequentially penetrates through the outer through hole and the mounting hole of the spherical valve, and the spherical valve is mounted on the outer side surface of the valve clack; the front side of the valve body is provided with a dismounting through hole, and the inner diameter of the dismounting through hole is not smaller than the outer diameter of the spherical valve; the dismounting structure is detachably arranged at the dismounting through opening; the inner end part of the dismounting structure is provided with a dismounting head matched with the positioning screw.

The spherical valve is detachably arranged on the outer side surface of the valve clack through a positioning screw. The spherical valve can be replaced on line by the dismounting structure with the mounting and dismounting head matched with the positioning screw through the dismounting through hole.

Preferably, an inner polygonal groove is formed in the outer side of the positioning screw; the dismounting structure comprises a guide sleeve, a pull rod and an adjusting ring; the guide sleeve is detachably arranged in the disassembly through hole; the outer side of the guide sleeve is provided with a concave step; the pull rod is sleeved inside the guide sleeve in a matching manner; the axial length of the pull rod is greater than that of the guide sleeve; the adjusting ring is arranged in the concave step through a limiting ring, and the inner wall of the adjusting ring is in threaded connection with the outer wall of the pull rod; the assembling and disassembling head is a polygonal head matched with the inner polygonal groove and is arranged on the inner end face of the pull rod.

Preferably, the outer end face of the valve flap is provided with two symmetrically arranged concave mounting grooves, and the mounting hole is positioned between the two concave mounting grooves; a positioning rod is arranged on the inner side of the spherical valve, an inner through hole of the spherical valve is formed in the middle of the positioning rod, and the inner diameter of the inner through hole of the spherical valve is equal to that of the mounting hole; the inner diameter of the through hole outside the spherical lobe is not less than the outer diameter of the positioning screw; each inwards concave mounting groove is internally provided with a waterproof structure which can be opened and closed, and each waterproof structure comprises a waterproof block; when the spherical valve is arranged on the valve clack, the two waterproof blocks are matched and shielded at the inner side of the outer through hole of the spherical valve, so that the positioning screw and the waterproof structure are sealed between the concave mounting groove and the inner side of the spherical valve. The waterproof structure can prevent the positioning screw from being corroded by a medium in the valve body and influencing the matching degree between the polygonal groove and the polygonal head in the positioning screw.

Preferably, the dismounting structure further comprises an isolation sleeve, a mobile adjusting device and an outer sealing plate; the outer diameter of the isolation sleeve is equal to the inner diameter of the dismounting through hole, and the inner diameter of the isolation sleeve is not smaller than the outer diameter of the spherical valve; the movable adjusting device is arranged on the outer side of the valve body and connected with the outer wall of the isolating sleeve and used for driving the isolating sleeve to move inside and outside; the outer diameter of the guide sleeve is matched with the inner diameter of the isolation sleeve, and the guide sleeve is in key connection with the isolation sleeve;

the outer sealing plate is arranged on the outer side of the valve body through an adjusting screw rod assembly; the middle of the outer sealing plate is fixedly connected with the outer wall of the guide sleeve;

the waterproof structure further comprises a U-shaped rod, a return spring, a clamping block and a first compression spring; the width of the U-shaped rod is matched with the inner diameter of the concave mounting groove, and the U-shaped rod comprises a first convex rod and a second convex rod which are equal in height; the first convex rod is close to the edge of the valve clack, and the second convex rod is close to the mounting hole; the second convex rod is a wedge-shaped block with a narrow inner part and a wide outer part, and the side surface of the second convex rod facing the first convex rod is an inclined surface; the reset spring is connected and arranged between the inner side surface of the U-shaped rod and the bottom of the concave mounting groove; the fixture block is arranged between the first convex rod and the second convex rod, and a fixture block groove matched with the inner side edge of the spherical valve is formed in the outer end face of the fixture block; the waterproof block comprises a wedge-shaped part and an outer shielding part; the wedge-shaped part is positioned between the first convex rod and the second convex rod, the wedge-shaped part is a wedge-shaped block which is matched with the second convex rod and is wide in inside and narrow in outside, and the side surface close to the second convex rod is an inclined surface; the area of the outer shielding part is not less than half of the area of the outer through hole of the spherical valve; the first compression spring is connected and installed between the clamping block and the wedge-shaped part, so that the wedge-shaped part is normally abutted against the second convex rod;

the distance between the first convex rods of the two waterproof structures is not smaller than the inner diameter of the isolation sleeve, and the distance between the first convex rods of the two waterproof structures is not larger than the outer diameter of the isolation sleeve;

when the isolating sleeve moves inwards to enable the first convex rod to drive the U-shaped rod and the second convex rod to move inwards to the inwards concave mounting groove, the wedge-shaped parts and the outer shielding parts of the two waterproof structures move back to back along with the second convex rod to enable the positioning screw to be exposed, so that the multiple sides of the inner end part of the pull rod move inwards to be connected with the inner multiple side grooves of the positioning screw in a matched mode, and the spherical petals are disassembled and assembled;

when the spacer sleeve moves outwards, the U-shaped rod moves outwards under the action of the return spring, so that the wedge-shaped parts and the outer shielding parts of the two waterproof structures move in opposite directions along with the second convex rod and completely shield the outer through hole of the spherical valve.

Preferably, the inner wall of the through hole outside the spherical valve is provided with an annular groove;

a rod hole is formed in the middle of the pull rod along the axial direction of the pull rod; the rod hole is internally sleeved with an inner pull rod matched with the rod hole; the polygonal head is arranged on the inner end surface of the inner pull rod; an inner flange which is radially inward is arranged at the inner end part of the rod hole, and the inner diameter of the inner flange is not less than the outer diameter of the polygonal head; an inner sleeve is axially and inwardly arranged on the inner end face of the inner flange, and the inner diameter of the inner sleeve is equal to that of the inner flange; the side wall of the inner sleeve is provided with a connecting device, and the length of the connecting device is greater than the thickness of the side wall of the inner sleeve; the connecting device is matched with the annular groove; the distance from the connecting device to the inner end face of the inner sleeve is equal to the distance from the annular groove to the inner side face of the spherical valve; the outer diameter of the inner sleeve is not larger than the inner diameter of the through hole outside the spherical valve; the outer side of the connecting device is normally flush with the outer wall of the inner sleeve; when the multi-edge head moves inwards, the connecting device is extruded to move towards the outer wall of the inner sleeve;

a second compression spring is arranged between the inner flange and the inner end face of the inner pull rod; the second compression spring enables the polygonal head to be normally retracted in the inner sleeve, the inner flange and the rod hole;

the outer end of the inner pull rod is provided with an inner adjusting ring, the outer side of the inner adjusting ring is fixedly connected with the inner pull rod, the inner diameter of the inner side of the inner adjusting ring is matched with the outer diameter of the pull rod, and the inner side of the inner adjusting ring is in threaded connection with the outer end of the pull rod.

Preferably, the movement adjusting device comprises a worm and a worm wheel adjusting ring; the worm is in transmission connection with the turbine adjusting ring, and the worm is in transmission connection with the turbine adjusting ring through a turbine and a worm. The inner wall of the turbine adjusting ring is in threaded connection with the outer wall of the isolating sleeve.

Preferably, a protective cover is arranged on the outer side of the valve body, and the inner side of the protective cover is fixed on the outer wall of the valve body; the outer sealing plate is arranged on the outer side of the protective cover through an adjusting screw rod assembly; the middle of the outer sealing plate is fixedly connected with the outer wall of the guide sleeve; the mobile adjusting device is positioned in the protective cover.

Preferably, the outer end part of the protective sleeve is provided with a lug block which is outward in the radial direction; the adjusting screw assembly comprises an adjusting nut, a bolt and a pre-pressing spring; the bolt sequentially penetrates through the lug block, the outer sealing plate, the pre-pressing spring and the adjusting nut from inside to outside and is in threaded connection with the adjusting nut.

Initially, the pre-pressing spring is in a compressed state under the action of the adjusting nut, so that the outer sealing plate presses the upper end face of the protective cover to form sealing, the movable adjusting device, the isolating sleeve, the guide sleeve and the like can be protected, and parts are prevented from being polluted and the like.

Preferably, the outer diameter of the valve flap is smaller than the inner diameter of the inlet cavity; the valve clack is connected with the valve rod through a key; and a lower valve rod is arranged between the lower part of the valve clack and the valve body. The valve clack can enter the valve body through the inlet cavity and then is in key connection with the valve rod, so that the assembly of the valve clack, the valve rod and other components of the V-shaped ball valve is facilitated.

One of the operation instructions of the invention:

the process of disassembling the spherical valve: firstly, a valve rod is rotated through a driving device to drive a valve clack (spherical clack) to rotate by 90 degrees, and the valve is in a full-open state at the moment;

secondly, the worm is rotated to drive the turbine adjusting ring to rotate, and the turbine adjusting ring is in threaded connection with the isolating sleeve, and the isolating sleeve is in key connection with the guide sleeve, so that the isolating sleeve can be driven to move towards the valve clack by rotating the turbine adjusting ring; the inner end surface of the isolating sleeve pushes the U-shaped rod to move towards the inner mounting groove, and at the moment, the isolating sleeve, the U-shaped rod and the valve clack form an isolating cavity isolated from the interior of the valve body together, so that media in the valve body are effectively isolated outside the isolating cavity; meanwhile, the U-shaped rod drives the waterproof block to move towards opposite directions of two sides, and the positioning screw is exposed;

then, the adjusting ring is rotated to drive the pull rod and the inner pull rod to move inwards, so that the inner end face of the pull rod compresses the outer end face of the positioning screw, and the connecting device is flush with the annular groove of the outer through hole of the spherical petal;

then, the inner adjusting ring is rotated to drive the inner pull rod to continuously move inwards, and the inner pull rod pushes and extrudes the connecting device to stretch into the annular groove; and the inner pull rod is continuously moved inwards, so that the multi-edge head at the inner end of the inner pull rod extends into the concave multi-edge groove on the outer end face of the positioning screw. At the moment, the adjusting nut is rotated to move the adjusting nut outwards, and the pre-pressing spring is extended and released;

then, rotating the inner pull rod to drive the positioning screw to screw out, driving the pull rod to move outwards while screwing out the positioning screw, and driving the spherical valve to move outwards by the connecting device;

finally, the spherical valve is pulled out, and finally the adjusting nut is dismounted, so that the spherical valve, the guide sleeve, the inner pull rod and the pull rod can be pulled out together.

Reinstallation of the spherical flap: placing a new spherical valve into the outer end face of the valve clack through the isolation cavity, pressing the positioning rod by using a positioning screw and screwing; and then the disassembled parts are reinstalled.

By adopting the technical scheme, the invention has the beneficial effects that: when the V-shaped ball valve is used, the ball valve which is detachably arranged with the valve clack can be disassembled and damaged on line and a new ball valve can be installed through the disassembling and assembling structure.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of FIG. 1 along the line A-A;

FIG. 3 is a schematic view of the spherical flap of FIG. 1 in a disassembled state from direction A-A;

FIG. 4 is a schematic view of the structure of FIG. 3 from E-E;

fig. 5 is an enlarged view of the portion C in fig. 3.

Description of the main reference numerals:

1. a valve body; 2. an inlet chamber; 3. a valve flap; 4. a lower positioning ring; 5. a middle positioning ring; 6. an upper positioning ring; 7. a filler; 8. a gland; 9. a support; 10. a valve stem; 11. a drive device; 12. a valve seat; 13. a spherical flap; 14. positioning a rod; 15. a waterproof block; 16. a set screw; 17. an outlet chamber; 18. a lower end cover; 19. a lower valve stem; 20. a connecting device; 21. an isolation sleeve; 22. a turbine adjusting ring; 23. a protective cover; 24. a worm; 25. a guide sleeve; 26. a second compression spring; 27. a limiting ring; 28. an adjusting ring; 29. a pull rod; 30. an inner pull rod; 31. an inner adjusting ring; 32. an outer sealing plate; 33. adjusting the nut; 34. a bolt; 35. pre-pressing a spring; 36. a polygonal head; 37. an isolation chamber; 38. a first compression spring; 39. a U-shaped rod; 40. a return spring; 41. mounting holes; 42. a spherical lobe outer through hole; 43. disassembling and assembling the through hole; 44. an inner polygonal groove; 45. a concave step; 46. an inward concave mounting groove; 47. a through hole in the spherical lobe; 48. a clamping block; 49. a first nose bar; 50. a second nose bar; 51. a fixture block groove; 52. a wedge portion; 53. an outer shielding portion; 55. an annular groove; 56. a rod hole; 57. an inner flange; 58. an inner sleeve; 59. an ear piece.

Detailed Description

The invention is further described below with reference to the figures and the specific embodiments. The directional phrases used in this disclosure include, for example: the directional terms such as up, down, left, right, inner, outer, etc. are used only with reference to the orientation of the attached FIG. 1 of the specification. Accordingly, the directional terminology used is intended to be illustrative only and is not intended to be limiting of the invention.

As shown in fig. 1-5, the V-shaped ball valve of the present invention comprises a valve body 1, a valve stem 10, a valve flap 3, a valve seat 12, a driving device 11, a bracket 9, a positioning ring, a packing 7, a gland 8, and a detachable structure installed on the front side of the valve body 1.

The valve clack 3 is arranged at the inner end of the valve rod 10 and rotates along the central axis of the valve rod 10; an inlet cavity 2 and an outlet cavity 17 are arranged in the valve body 1, and the valve clack is positioned between the inlet cavity 2 and the outlet cavity 17. The valve rod 10 penetrates through the valve body 1 and extends outwards to the outside of the valve body 1; the valve seat 12 is mounted in the outlet chamber 17.

The driving device 11 is mounted on the upper end of the valve rod 10 and is used for driving the valve rod 10 to rotate. The driving device 11 may be a worm gear, a pneumatic driving device, a hydraulic driving device, an electric device, or the like. The support 9 is arranged between the valve body 1 and the driving device 11, and the lower part of the support 9 is provided with a through hole with the inner diameter larger than that of the valve rod 10. Be equipped with the position circle between valve rod 10 and the valve body 1, the position circle can also be equipped with position circle 6, well position circle 5 and lower position circle 4 from top to bottom in proper order, and the position circle is used for making valve rod 10 and valve clack 3 stable connection. The packing 7 is filled on the positioning ring and is fixed between the valve body 1 and the valve rod 10 by the gland 8, and the packing 7 and the gland 8 can ensure that the valve rod 10 is stably installed on the valve body 1.

The outer side of the valve clack 3 is provided with a detachable spherical clack 13; when closed, the outer spherical surface of the spherical flap 13 abuts against the inner side of the valve seat 12.

When the spherical valve clack 13 rotates to the front side of the valve body 1 along with the valve clack 3 and the valve rod 10, the spherical valve clack 13 can be detached and replaced through the dismounting structure, and the operation of replacing the spherical valve clack 13 on line of the V-shaped ball valve is realized.

The outer diameter of the valve clack 3 is smaller than the inner diameter of the inlet cavity 2; the valve clack 3 is in key connection with the valve rod 10; a lower valve rod 19 is arranged between the lower part of the valve clack 3 and the valve body 1, and the lower valve rod 19 is fixed at the lower part of the valve body 1 through a lower end cover 18. The valve clack 2 can enter the valve body 1 through the inlet cavity 2 and then is in key connection with the valve rod 10, so that the assembly of the V-shaped ball valve clack 3, the valve rod 10 and other components is facilitated.

The present invention also includes a set screw 16. A mounting hole 41 is formed in the middle of the outer end face of the valve clack 2; the middle of the spherical petal 13 is provided with a spherical petal outer through hole 42; the positioning screws 16 are respectively matched with the mounting holes 41 and the spherical petal outer through holes 32; when in use, the positioning screw 16 sequentially passes through the spherical flap outer through hole 42 and the mounting hole 41, and the spherical flap 13 is mounted on the outer side surface of the valve flap 3; the front side of the valve body 1 is provided with a dismounting through hole 43, and the inner diameter of the dismounting through hole 43 is not smaller than the outer diameter of the spherical valve 13; the dismounting structure is detachably arranged at the dismounting through hole 43; the inner end part of the dismounting structure is provided with a dismounting head matched with the positioning screw 16.

The spherical flap 13 is detachably mounted on the outer side of the valve flap 3 by a set screw 16. The removable structure with the attachment and detachment head matching the set screw 16 allows the spherical flap 13 to be replaced online by removing the through opening 43.

In a further embodiment, an inner polygonal groove 44 is formed on the outer side of the positioning screw 16; the dismounting structure comprises a guide sleeve 25, a pull rod 29 and an adjusting ring 28; the guide sleeve 25 is detachably arranged in the disassembling through hole 43; a concave step 45 is arranged on the outer side of the guide sleeve 25; the pull rod 29 is sleeved inside the guide sleeve 25 in a matching way; the axial length of the pull rod 29 is greater than that of the guide sleeve 25; the adjusting ring 28 is arranged in the concave step 45 through a limiting ring 27, and the inner wall of the adjusting ring 28 is in threaded connection with the outer wall of the pull rod 29; the mounting and dismounting head is a polygonal head 36 matched with an inner polygonal groove 44 and is arranged on the inner end surface of the pull rod 29.

In a further specific embodiment, two symmetrically arranged concave mounting grooves 46 are formed in the outer end surface of the valve flap 3, and the mounting hole 41 is located between the two concave mounting grooves 46; a positioning rod 14 is arranged on the inner side of the spherical flap 13, a spherical flap inner through hole 47 is formed in the middle of the positioning rod 14, and the inner diameter of the spherical flap inner through hole 47 is equal to that of the mounting hole 41. In this embodiment, the inner diameter of the spherical out-flap through hole 42 is not smaller than the outer diameter of the set screw 16; each concave mounting groove 46 is internally provided with a waterproof structure which can be opened and closed, and the waterproof structure comprises a waterproof block 15; when the spherical valve 13 is installed on the valve flap 3, the two waterproof blocks 15 are matched to shield the inner side of the outer through hole 42 of the spherical valve, so that the positioning screw 16 and the waterproof structure are sealed between the concave installation groove 46 and the inner side of the spherical valve 13.

In a further embodiment, the detachable structure further includes a spacer 21, a movement adjusting device and an outer sealing plate 32. In this embodiment, the outer diameter of the isolation sleeve 21 is equal to the inner diameter of the dismounting through opening 43, and the inner diameter of the isolation sleeve 21 is not smaller than the outer diameter of the spherical flap 13; the movable adjusting device is arranged on the outer side of the valve body 1 and is connected with the outer wall of the isolation sleeve 21 and used for driving the isolation sleeve 21 to move inside and outside; the outer diameter of the guide sleeve 25 is matched with the inner diameter of the isolation sleeve 21, and the guide sleeve 25 is in key connection with the isolation sleeve 21;

the outer sealing plate 32 is arranged on the outer side of the valve body 1 through an adjusting screw assembly; the middle of the outer closing plate 32 is fixedly connected with the outer wall of the guide sleeve 25;

the waterproof structure further comprises a U-shaped rod 39, a return spring 40, a clamping block 48 and a first compression spring 38; the width of the U-shaped rod 39 is matched with the inner diameter of the concave mounting groove 46, and the U-shaped rod 39 comprises a first convex rod 49 and a second convex rod 50 which are equal in height; the first convex rod 49 is close to the edge of the valve clack 3, and the second convex rod 50 is close to the mounting hole 41; the second protruding rod 50 is a wedge-shaped block with a narrow inner part and a wide outer part, and the side surface of the second protruding rod 50 facing the first protruding rod 49 is an inclined surface. The return spring 40 is connected and installed between the inner side surface of the U-shaped rod 39 and the bottom of the concave installation groove 46, and the return spring 40 can be a belleville spring. The fixture block 48 is arranged between the first convex rod 49 and the second convex rod 50, and a fixture block groove 51 matched with the inner side edge of the spherical petal 13 is arranged on the outer end surface of the fixture block 48; the waterproof block 15 comprises a wedge-shaped portion 52 and an outer shielding portion 53; the wedge-shaped part 52 is positioned between the first convex rod 49 and the second convex rod 50, the wedge-shaped part 52 is a wedge-shaped block which is matched with the second convex rod 50 and has a wide inner part and a narrow outer part, and the side surface close to the second convex rod 50 is an inclined surface; the area of the outer shielding part 53 is not less than half of the area of the spherical lobe outer through hole 42; the first compression spring 38 is connected and installed between the fixture block 48 and the wedge-shaped part 52, so that the wedge-shaped part 52 is normally abutted against the second convex rod 50;

the distance between the first convex rods 49 of the two waterproof structures is not less than the inner diameter of the isolation sleeve 21, and the distance between the first convex rods 49 of the two waterproof structures is not more than the outer diameter of the isolation sleeve 21;

when the isolating sleeve 21 moves inwards to enable the first convex rod 49 to drive the U-shaped rod 39 and the second convex rod 50 to move towards the inner concave mounting groove 46, the wedge-shaped parts 52 and the outer shielding parts 53 of the two waterproof structures move back to back along with the second convex rod 50, so that the positioning screw 16 is exposed, the multi-edge head 36 at the inner end part of the pull rod 29 conveniently moves inwards to be connected with the inner multi-edge groove 44 of the positioning screw 16 in a matching manner, and the spherical lobe 13 is disassembled;

when the isolation sleeve 21 moves outwards, the U-shaped rod 39 moves outwards under the action of the return spring 40, so that the wedge-shaped parts 52 and the outer shielding parts 53 of the two waterproof structures move towards each other along with the second convex rod 50 to completely shield the outer through holes 42 of the spherical petals.

In a further specific embodiment, the inner wall of the through hole 42 outside the spherical petal is provided with an annular groove 55;

a rod hole 56 is formed in the middle of the pull rod 29 along the axial direction of the pull rod; the rod hole 56 is internally sleeved with an inner pull rod 30 matched with the rod hole; the multi-edge head 36 is arranged on the inner end surface of the inner pull rod 30; the inner end part of the rod hole 56 is provided with a radial inward inner flange 57, and the inner diameter of the inner flange 57 is not less than the outer diameter of the polygonal head 36; an inner sleeve 58 is axially and inwardly arranged on the inner end surface of the inner flange 57, and the inner diameter of the inner sleeve 58 is equal to that of the inner flange 57; the connecting device 20 is arranged on the side wall of the inner sleeve 58, and the length of the connecting device 20 is greater than the thickness of the side wall of the inner sleeve 58; the connecting device 20 is matched with the annular groove 55; the distance from the connecting device 20 to the inner end surface of the inner sleeve 58 is equal to the distance from the annular groove 55 to the inner side surface of the spherical valve 13; the outer diameter of the inner sleeve 58 is not greater than the inner diameter of the outer through hole 42 of the spherical valve; the outer side of the connecting device 20 is normally flush with the outer wall of the inner sleeve 58; as multilateral head 36 moves inwardly, connecting device 20 is squeezed to move toward the outer wall of inner sleeve 58;

a second compression spring 26 is arranged between the inner flange 57 and the inner end face of the inner pull rod 30; the second compression spring 26 normally retracts the polygonal head 36 into the inner sleeve 58, the inner flange 57 and the rod hole 56;

an inner adjusting ring 31 is arranged at the outer end of the inner pull rod 30, the outer side of the inner adjusting ring 31 is fixedly connected with the inner pull rod 30, the inner diameter of the inner side of the inner adjusting ring 31 is matched with the outer diameter of the pull rod 29, and the inner side of the inner adjusting ring 31 is in threaded connection with the outer end of the pull rod 29.

In a further embodiment, the movement adjustment means comprises a worm 24 and a worm wheel adjustment ring 22; the worm 24 and the worm wheel adjusting ring 22 form a worm wheel and worm wheel transmission connection. The inner wall of the turbine adjusting ring 22 is in threaded connection with the outer wall of the isolating sleeve 21.

In a further specific embodiment, a protective cover 23 is arranged on the outer side of the valve body 1, and the inner side of the protective cover 23 is fixed on the outer wall of the valve body 1; the outer sealing plate 32 is arranged on the outer side of the protective cover 23 through an adjusting screw rod assembly; the middle of the outer closing plate 32 is fixedly connected with the outer wall of the guide sleeve 25; the movement adjusting means is located within the protective cover 23.

In a further embodiment, the outer end of the protective sheath 23 is provided with a radially outward lug 59; the adjusting screw assembly comprises an adjusting nut 33, a bolt 34 and a pre-pressing spring 35; the bolt 34 sequentially penetrates through the lug block 59, the outer sealing plate 32, the pre-pressing spring 35 and the adjusting nut 33 from inside to outside and is in threaded connection.

Initially, the pre-compression spring 35 is in a compressed state under the action of the adjusting nut 33, so that the outer sealing plate 32 presses the upper end face of the protective cover 23 to form a seal, thereby protecting the movable adjusting device, the isolation sleeve 21, the guide sleeve 25 and the like and avoiding parts from being polluted and the like.

As shown in fig. 1-5, one of the operational instructions for use of the present invention:

the process of disassembling the spherical valve: firstly, the valve rod 10 is rotated through a driving device to drive the valve clack 3 (and the spherical clack 13) to rotate by 90 degrees, and the valve is in a full-open state at the moment;

secondly, the worm 24 is rotated to drive the turbine adjusting ring 22 to rotate, and the turbine adjusting ring 22 is in threaded connection with the isolating sleeve 21, and the isolating sleeve 21 is in key connection with the guide sleeve 25, so that the isolating sleeve 21 can be driven to move towards the valve clack 3 by rotating the turbine adjusting ring 22; the inner end face of the isolation sleeve 21 pushes the U-shaped rod 39 to move towards the inner mounting groove 46, and at the moment, the isolation sleeve 21, the U-shaped rod 39 and the valve clack 3 jointly form an isolation cavity isolated from the interior of the valve body, so that a medium in the valve body 1 is effectively isolated outside the isolation cavity; meanwhile, the U-shaped rod 39 drives the waterproof block 15 to move towards opposite directions of two sides, and the positioning screw 16 is exposed;

then, the adjusting ring 28 is rotated to drive the pull rod 29 and the inner pull rod 30 to move inwards, so that the inner end surface of the pull rod 29 compresses the outer end surface of the positioning screw 16, and the connecting device 20 is flush with the annular groove 55 of the spherical petal outer through hole 42;

then, the inner adjusting ring 31 is rotated to drive the inner pull rod to move inwards continuously, and the inner pull rod pushes and extrudes the connecting device 20 to extend into the annular groove 55; and continuing to move the inner tie rod 30 inwardly so that the polygonal head 36 at the inner end of the inner tie rod 30 extends into the concave polygonal groove 44 in the outer end face of the set screw 16. At the moment, the adjusting nut 33 is rotated to enable the adjusting nut 33 to move outwards, and the pre-pressing spring 35 is extended and released;

then, the inner pull rod 30 is rotated to drive the positioning screw 16 to be screwed out, the positioning screw 16 is screwed out and simultaneously drives the pull rod 29 to move outwards, and the connecting device 20 drives the spherical valve 13 to move outwards;

finally, the spherical valve 13 is pulled out, and finally the adjusting nut 33 is dismounted, so that the spherical valve 13, the guide sleeve 21, the inner pull rod 30 and the pull rod 29 can be pulled out together.

Reinstallation of the spherical flap: a new spherical valve 13 is placed on the outer end face of the valve clack 3 through the isolation cavity, and a positioning screw 16 is used for pressing a positioning rod 14 and screwing the positioning rod; and then the disassembled parts are reinstalled.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the present invention, and all equivalent variations and modifications made in the claims of the present invention should be included in the scope of the present invention.