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CN-121977087-A - Soft sealing type ball valve and use method thereof

CN121977087ACN 121977087 ACN121977087 ACN 121977087ACN-121977087-A

Abstract

The invention discloses a soft sealing type ball valve and a use method thereof, and relates to the technical field of valve bodies, wherein the soft sealing type ball valve comprises a valve body, a ball body, a drainage pipeline and a pressure relief pipeline, wherein the pressure relief pipeline is arranged in the valve body; the device comprises a ball valve, a water guide assembly, a pressure stabilizing assembly, a buffer assembly, a plurality of components, a pressure stabilizing assembly, a buffering assembly and a buffering assembly, wherein the water guide assembly is used for guiding waste water discharged by a pressure relief pipeline, the pressure stabilizing assembly extrudes a ball when the ball valve is in a use state, the buffer assembly buffers high-pressure liquid discharged by the interior of the water relief pipeline when an opening of the water relief pipeline is overlapped with the pressure relief pipeline, the ball valve performance is optimized through cooperation of the plurality of components, the pressure relief pipeline in the valve body and the ball valve are accurately aligned, residual liquid flows into a water guide cavity to be intensively discharged, corrosion and scale are prevented, the pressure stabilizing assembly is elastically attached to the ball, vibration is inhibited and abrasion is reduced, the pressure stabilizing assembly is actively separated when the ball valve is closed, the rotation resistance is reduced, and the buffer assembly shunts the high-pressure liquid, and abrasion is reduced.

Inventors

  • WANG YUHOU
  • WANG XINRUI
  • WANG WENCHENG
  • WANG YIREN
  • YANG DENG

Assignees

  • 温州天裕阀门科技有限公司

Dates

Publication Date
20260505
Application Date
20260318

Claims (9)

  1. 1. The utility model provides a soft seal formula ball valve, includes valve body (1), spheroid (4), drainage pipe (5), disk seat (10) and sealing washer (11), its characterized in that still includes: the pressure release pipeline (9) is arranged in the valve body (1), when the ball valve is turned and closed, the opening of the drainage pipeline (5) is overlapped with the pressure release pipeline (9), and residual liquid in the drainage pipeline (5) is discharged along the pressure release pipeline (9); The water guide assembly (6) is arranged at one end of the valve body (1) and is used for guiding the wastewater discharged by the pressure relief pipeline (9); the pressure stabilizing component (7) is movably connected to the inside of the pressure relief pipeline (9) and is used for adjusting the extrusion force on the sphere (4); the buffer component (8) is fixedly connected to the output end of the pressure stabilizing component (7), and when the opening of the drainage pipeline (5) is overlapped with the pressure release pipeline (9), the buffer component (8) buffers high-pressure liquid discharged from the inside of the drainage pipeline (5).
  2. 2. The soft seal ball valve of claim 1, wherein said ball valve further comprises: A water inlet pipe (2) which is arranged inside the valve body (1); The valve rod (3) is arranged in the valve body (1) and fixedly connected with the ball body (4) and is used for driving the ball body (4) to rotate; the inner cavity (14) is formed in the inner wall of the valve body (1) and is communicated with the pressure relief pipeline (9), the flow cavity (12) is arranged between the valve seat (10) and the valve body (1), the air inlet (13) is communicated between the inner cavity (14) and the flow cavity (12), and the air pressure inside the pressure relief pipeline (9) enters the flow cavity (12) along the inner cavity (14) and the air inlet (13).
  3. 3. A soft sealing ball valve according to claim 2, characterized in that the water guiding assembly (6) comprises: the shell (601) is arranged at one end of the valve body (1) and used for supporting the pressure stabilizing component (7) and guiding the waste water discharged by the pressure relief pipeline (9), and the water guide cavity (603) is formed in the shell (601) and used for guiding the waste water in the pressure relief pipeline (9); The conical pipeline (602) is arranged in the shell (601), one end of the conical pipeline (602) is connected with the water outlet of the pressure relief pipeline (9), the other end of the conical pipeline is communicated with the water guide cavity (603), and the inner diameter of the conical pipeline (602) gradually increases from one end to the other end of the pressure relief pipeline (9) and is used for conveying wastewater in the pressure relief pipeline (9); And a water outlet (604) which is arranged in the shell (601), wherein one end of the water outlet (604) is communicated with the water guide cavity (603) and is used for discharging the waste water in the water guide cavity (603) outwards.
  4. 4. A soft sealing ball valve according to claim 3, characterized in that the pressure stabilizing assembly (7) comprises: A driving rod (701) which is arranged at one end of the shell (601), and the output end of the driving rod (701) is provided with a supporting piece (702) for receiving and transmitting the acting force of the driving rod (701); And an exhaust port (703) provided inside the support member (702) for adjusting the air pressure in the pressure release pipe (9).
  5. 5. A soft seal ball valve according to claim 4, wherein the pressure stabilizing assembly (7) further comprises: A rotation baffle (705) which is arranged at one end of the exhaust port (703) far away from the sphere (4), and the rotation baffle (705) rotates unidirectionally in the direction far away from the sphere (4); And the sealing ring (704) is arranged on the outer side of the supporting piece (702) and is used for being in sealing fit with the inner wall of the pressure relief pipeline (9).
  6. 6. A soft sealing ball valve according to claim 4, characterized in that the buffer assembly (8) comprises: An elastic member (801) disposed at one end of the support member (702) away from the driving rod (701) for transmitting the force of the support member (702); The buffer plate (802) is arranged at the other end of the elastic piece (801) and is used for receiving high-pressure liquid discharged from the inside of the drainage pipeline (5), and the other end of the buffer plate (802) is elastically pressed and contacted with the outer surface of the sphere (4) and is used for adjusting the extrusion force to the sphere (4).
  7. 7. A soft sealing ball valve according to claim 6, wherein the damping assembly (8) further comprises: A flow guide port (803) which is uniformly provided inside the buffer plate (802) and changes the flow direction of the high-pressure liquid; and the blocking rod (804) is arranged at one end of the buffer plate (802) away from the ball body (4), and the blocking rod (804) corresponds to the air outlet (703) and is in sealing sliding connection and is used for blocking the air outlet (703) when the supporting piece (702) moves towards the direction approaching the ball body (4).
  8. 8. The soft sealing ball valve according to claim 4, wherein the ball body (4) is in sealing rotation connection with the inner wall of the valve body (1), the drainage pipeline (5) is arranged at the axis of the ball body (4) and is matched with the inner diameter of the water inlet pipeline (2), the inner diameter of the drainage pipeline (5) is matched with the inner diameter of the end part of the pressure release pipeline (9), the valve seat (10) is movably connected between the valve body (1) and the ball body (4) and is elastically connected between the valve seat (10) and the valve body (1) through an elastic ring, the sealing ring (11) is arranged at the end part of the valve seat (10) and is elastically extruded and contacted with the side wall of the ball body (4), and the sealing ring (11) is provided with elasticity and the end part is a friction surface and is used for elastically attaching the side wall of the ball body (4).
  9. 9. A method of using a soft seal ball valve, said method of using a soft seal ball valve as defined in claim 7, comprising the steps of: s1, when the ball valve is normally used, the driving rod (701) drives the supporting piece (702) to move towards the direction close to the ball body (4), and the supporting piece (702) drives the buffer plate (802) to squeeze the ball body (4); S2, when the ball valve is used and the water flow fluctuates, the driving rod (701) drives the buffer plate (802) to move towards the direction close to the ball body (4) through the supporting piece (702) and presses the surface of the ball body (4), the blocking rod (804) blocks the exhaust port (703), the air pressure in the pressure release pipeline (9) is increased, the air pressure enters the flow cavity (12) along the inner cavity (14) and the air inlet (13), the air pressure in the flow cavity (12) is increased, the thrust force applied to the valve seat (10) is increased, and the valve seat (10) moves towards the end close to the ball body (4) and increases the supporting force of the sealing ring (11) on the ball body (4); S3, when the ball valve needs to be closed, the driving rod (701) drives the buffer plate (802) to move in a direction away from the ball body (4) through the supporting piece (702) and separate from the surface of the ball body (4), the blocking rod (804) is separated from the exhaust port (703), the internal air pressure of the pressure relief pipeline (9) is reduced, the internal air pressure of the flow cavity (12) is discharged along the air inlet (13) and the inner cavity (14), the internal air pressure of the flow cavity (12) is reduced in proportion and applies thrust to the valve seat (10), and the valve seat (10) moves towards the end away from the ball body (4) and reduces the supporting force of the sealing ring (11) on the ball body (4); S4, the ball body (4) rotates to enable the drainage pipeline (5) to coincide with the pressure relief pipeline (9), the buffer plate (802) buffers high-pressure liquid, the diversion port (803) shunts the high-pressure liquid, and residual liquid in the drainage pipeline (5) is discharged along the pressure relief pipeline (9); s5, the supporting piece (702) moves back and forth along the pressure relief pipeline (9), high-frequency negative pressure is formed inside the pressure relief pipeline (9), and residual liquid inside the drainage pipeline (5) is sucked and discharged.

Description

Soft sealing type ball valve and use method thereof Technical Field The invention relates to the technical field of valve bodies, in particular to a soft sealing type ball valve and a use method thereof. Background The ball valve is a key core valve for controlling fluid in the industrial field, the core drives the spherical opening and closing member to rotate by 90 degrees through the valve rod to realize medium on-off, distribution and flow direction adjustment, and the ball valve is composed of a valve body, a ball body, the valve rod, a valve seat and the like, can be divided into various types according to a sealing mode and a ball body fixing mode, and can adapt to different working condition demands such as normal temperature and low pressure, high temperature and high pressure, strong corrosion and the like. Chinese patent publication No. CN111795172a discloses a ball valve, which comprises a valve body, wherein a channel and a mounting hole are arranged in the valve body, an upper end cover is installed at the upper end of the mounting hole, and a lower end cover is installed at the lower end of the mounting hole. The publication number CN121007226B discloses a fire hydrant valve body, which relates to the technical field of valves and comprises a valve pipe and a cleaning unit, wherein the cleaning unit comprises a valve rod assembly rotatably arranged at the top of the valve pipe and a scraping assembly rotatably arranged at the bottom of the valve rod assembly, and the scraping assembly is rotatably connected with the valve pipe. According to the technical scheme, the problems exist in the use process, namely, the specific residue prevention design is lacking, liquid is easy to accumulate in the drainage pipeline and in the gap between the ball body and the valve body after the drainage pipeline is closed, particularly, mineral substances and corrosive components in the residue liquid are difficult to discharge under a high-pressure working condition, the pipeline is corroded and scaled due to long-term adhesion, the resistance of the next opening is increased, the flatness of a sealing surface is damaged, and parts are blocked when the device is seriously affected. Meanwhile, irregular fluctuation caused by pipeline resistance and flow velocity change in the liquid circulation process can drive the ball body to vibrate continuously, and the traditional structure lacks an effective stable limiting mechanism, so that the ball body is continuously impacted on the valve seat and the valve body, the surface abrasion of the three parts is aggravated, the sealing performance is easily reduced after long-time use, and the whole service life of the ball valve is greatly shortened. In the closing process of the traditional ball valve, extrusion force between the valve seat and the ball body continuously exists, especially extrusion force is applied to the ball body by the valve seat at the maximum in the initial closing process state, and due to the fact that rotation resistance of the ball body is increased due to the fact that a pre-release structure is lacked, clamping stagnation phenomenon is easy to occur, secondary damage such as valve rod deformation and ball body surface scratch is easy to occur in forced operation, and if the sealing ring at the end portion of the valve seat is adhered to the ball body, tearing damage of the sealing ring is easy to occur when the sealing ring is directly rotated to separate the sealing ring from the sealing ring, so that the follow-up sealing effect is affected. In addition, when the ball valve is closed, the drainage pipeline and the pressure relief pipeline coincide in a transition stage, the flow section is suddenly contracted to enable high-pressure liquid to form a water knife, a corresponding buffer protection component is not arranged in a traditional structure, the high-speed jet directly impacts the sealing ring for sealing, and the sealing ring is scratched, damaged or even torn to cause sealing failure. Meanwhile, although liquid in the drainage pipeline flows into the pressure relief pipeline under the action of gravity, a part of liquid is inevitably remained in the drainage pipeline, and meanwhile, certain residues are remained in the pressure relief pipeline, so that the residual liquid has adverse effects of corroding the inner wall of the pipeline and the like, and the service life of the pipeline is reduced. Therefore, it is especially necessary to develop a soft sealing ball valve with the functions of high-efficiency residue prevention, stable vibration prevention, high-pressure buffering, impurity removal, closing resistance reduction and long-term elastic compensation sealing. Disclosure of Invention The invention aims to provide a soft sealing type ball valve and a use method thereof, so as to solve the problems in the background technology. In order to achieve the purpose, the invention provides the following technical scheme that the so