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CN-122014878-A - Three-way reversing ball valve

CN122014878ACN 122014878 ACN122014878 ACN 122014878ACN-122014878-A

Abstract

The application relates to the technical field of fluid control valves, in particular to a three-way reversing ball valve. The three-way reversing ball valve comprises a valve body, a valve core and a rotary driving mechanism, wherein the valve core is rotationally connected to a valve cavity, a flow passage is arranged in the valve cavity, at least one flexible part is arranged on the wall part of the flow passage, the core is provided with a turbulence triggering mechanism which responds to the rotary motion of the valve core and applies acting force to the flexible part to deform the flexible part, when the valve core rotates to a slurry filling position for communicating a main interface and a first auxiliary interface, the flow passage is unobstructed, and when the valve core rotates to a flushing position for communicating the main interface and a second auxiliary interface, the turbulence triggering mechanism is automatically triggered to enable the flexible part to deform inwards, so that the local cross section area of the flow passage is reduced or an inwardly protruding turbulence structure is formed. The application realizes the self-adaptive adjustment of two working conditions of slurry low-resistance conveying and flushing water high-efficiency cleaning on a single valve, and is particularly suitable for grouting backfilling and pipeline cleaning procedures in mining and civil construction.

Inventors

  • DAI XIANCAI
  • WANG CHUIHONG
  • WANG YUYAN
  • FANG WENBO
  • QIN SITAO
  • JIANG QI
  • ZHANG JING

Assignees

  • 上海凯工阀门股份有限公司

Dates

Publication Date
20260512
Application Date
20260325

Claims (10)

  1. 1. A three-way reversing ball valve, comprising: a valve cavity (13) is formed in the middle of the valve body (1), and a main interface (121), a first auxiliary interface (111) and a second auxiliary interface (112) which are communicated with the valve cavity (13) are arranged on the valve body (1); The valve core (2) is rotationally connected in the valve cavity (13), a flow passage (21) allowing fluid to pass through is arranged in the valve core (2), and the wall part of the flow passage (21) at least comprises a flexible part capable of elastically deforming; The rotary driving mechanism (3) is fixedly arranged on the valve body (1) and is used for driving the valve core (2) to rotate, and adjusting the position of the internal flow passage (21) in the valve cavity (13) so as to drive the two ends of the flow passage (21) to be selectively communicated with the main interface (121) and the first auxiliary interface (111) or the main interface (121) and the second auxiliary interface (112) along with the rotation of the valve core (2); and the turbulence triggering mechanism is configured to respond to the rotary motion of the valve core (2) and apply a force to the flexible part to drive the flexible part to deform so as to reduce the local cross-sectional area of the flow channel (21) when the flow channel is communicated with the main interface (121) and the second auxiliary interface (112) or form an inward protruding turbulence structure.
  2. 2. The three-way reversing ball valve according to claim 1, wherein a valve rod (22) is arranged at the upper end of the valve core (2), an operation cavity (23) is formed in the valve core, a lower pressing plate (231) for pressing the flexible part and an elastic piece for driving the lower pressing plate (231) to be far away from the flexible part are arranged in the operation cavity (23), an axial guide hole (221) is formed in the valve rod (22), the turbulence triggering mechanism comprises a pressing assembly and a triggering rod (24) which is slidably connected in the guide hole (221), and the pressing assembly can drive the triggering rod (24) to act on the lower pressing plate (231) in the rotating process of the valve core (2), so that the lower pressing plate (231) overcomes the acting force of the elastic piece to move towards the direction close to the flexible part to deform the flexible part.
  3. 3. The three-way reversing ball valve according to claim 2, wherein the lower pressure plate (231) is fixedly arranged at the lower end of the trigger rod (24), a limiting cover (25) is arranged at the top of the operating cavity (23), the trigger rod (24) penetrates through the limiting cover (25), a positioning convex ring (243) is arranged on the outer wall of the trigger rod (24), and the elastic piece is sleeved on the trigger rod (24) and is arranged between the limiting cover (25) and the positioning convex ring (243).
  4. 4. The three-way reversing ball valve according to claim 2, wherein the lower pressure plate (231) is hinged on the inner wall of the operation cavity (23), a guide groove (233) is formed in the back of the lower pressure plate (231), a push pin (241) which is connected in the guide groove (233) in a sliding manner is arranged at the end of the trigger rod (24), and the elastic piece is a torsion spring (235) arranged at the hinged position of the lower pressure plate (231).
  5. 5. The three-way reversing ball valve according to claim 2, wherein the pressing assembly comprises a thimble (114) fixedly arranged on the valve body (1) and an arc-shaped guide surface (242) arranged on the trigger rod (24), the arc-shaped guide surface (242) can be abutted with the thimble (114) under the action of an elastic piece, and a limit key (245) for limiting the rotation of the trigger rod (24) is arranged between the trigger rod (24) and the guide hole (221).
  6. 6. The three-way reversing ball valve according to claim 5, wherein a notch limit groove (222) communicated with the guide hole (221) is formed in the side wall of the middle section of the valve rod (22), a support rod (113) is arranged on the valve body (1), the thimble (114) is arranged on the support rod (113), the thimble (114) is abutted with the arc-shaped guide surface (242) in the notch limit groove (222), and the upper end of the valve rod (22) is connected to the rotary driving mechanism (3).
  7. 7. The three-way reversing ball valve according to claim 2, wherein a plurality of through holes are formed in the side wall, close to the operation cavity (23), of the flow channel (21), the flexible portion is a flexible rubber film (211) arranged in the through holes, a plurality of circular arc protruding portions (234) matched with the through holes are arranged on the lower pressing plate (231), and the circular arc protruding portions (234) are abutted against the flexible rubber film (211) to provide supporting force for the flexible rubber film (211).
  8. 8. The three-way reversing ball valve according to claim 7, wherein an installation groove matched with the flexible rubber membrane (211) is formed in the outer wall of the flow passage (21), a shaping gland (212) is arranged in the installation groove, and the flexible rubber membrane (211) is fixedly arranged in an accommodating space surrounded by the shaping gland (212) and the installation groove.
  9. 9. The three-way reversing ball valve according to claim 2, wherein the lower pressure plate (231) is matched with the operation cavity (23), is connected to the inner wall of the operation cavity (23) in a sliding manner, divides the operation cavity (23) into an upper movable cavity (237) and a lower sealing cavity (238), the flexible portion is located in the lower sealing cavity (238), and the lower pressure assembly can drive the trigger rod (24) to act on the lower pressure plate (231) in the rotating process of the valve core (2), so that the lower pressure plate (231) moves towards the direction approaching to the flexible portion against the acting force of the elastic piece, and the flexible portion is driven to deform by increasing the air pressure of the lower sealing cavity (238).
  10. 10. The three-way reversing ball valve according to claim 1, wherein the valve body (1) is formed by splicing an upper valve cover (11) and a lower valve seat (12), the lower valve seat (12) is of a conical structure, the main interface (121) is arranged on the lower valve seat (12), the first auxiliary interface (111) and the second auxiliary interface (112) are arranged on the upper valve cover (11), and at least two lifting lugs (122) are uniformly distributed on the side wall of the lower valve seat (12).

Description

Three-way reversing ball valve Technical Field The application relates to the technical field of fluid control valves, in particular to a three-way reversing ball valve. Background In the field of mining and civil construction, in particular in the working procedures involving grouting backfill, such as foundation reinforcement, pile foundation engineering and tunnel lining, two critical fluid delivery phases are generally involved. The first stage is a pouring stage of high-concentration and high-viscosity slurry, wherein the slurry comprises cement slurry, cement mortar or chemical slurry and the like. The second stage is a clean water or low-pressure flushing water flushing stage for cleaning the inner cavity of the conveying pipeline and the valve body after the filling is finished. Currently, three-way reversing valves are commonly used as core components for realizing flow path switching in the process. The typical mode of operation is that during the priming phase, the valve is switched to the slurry path, communicating the main line from the pumping device with the priming branch leading to the backfill area, in order to ensure that the slurry can pass with minimum resistance and maximum flow, thus avoiding sedimentation blockages. In the flushing stage, the valve is switched to a flushing waterway, the main pipeline is communicated with a flushing branch leading to a drainage or recovery system, and the valve cavity and an upstream pipeline are thoroughly flushed by high-speed water flow, so that slurry residue is prevented and solidification is prevented. However, the traditional three-way reversing valve has obvious limitation in practical application, and the shape and the size of the flow passage inside the valve core are fixed. This fixed structure causes the valve to become dilemma when facing two different conditions. In particular, to ensure smooth filling of the slurry, the flow channels are generally designed to be relatively wide and straight to reduce flow resistance. However, when the valve is switched to a flushing mode, the water flow speed is obviously reduced due to the overlarge cross-sectional area of the flow channel, the flushing force and turbulence effect required by flushing are weakened, the cleaning efficiency is low, the dead angle of the valve cavity is easy to remain with slurry, and valve clamping stagnation or sealing failure can be caused by long-term accumulation. On the contrary, if the flow channel is designed to be smaller to improve the flushing effect, the passing ability of the slurry is seriously hindered, and even the blocking risk is directly caused. Therefore, there is a long-felt need in the art to develop a three-way reversing valve capable of intelligently adapting to different fluid conditions, an ideal valve can automatically adjust fluid dynamics characteristics of an internal flow channel while realizing flow channel switching, specifically, an unobstructed flow channel is provided when slurry is conveyed, and a local throttling or turbulent flow structure can be actively formed in a specific branch, namely a flushing branch when flushing is performed, so that water flow speed is improved, turbulence is enhanced, efficient and thorough cleaning is realized, meanwhile, the valve structure is kept compact and operation linkage is kept, and a solution capable of realizing dual functions of flow channel switching and self-adaptive flow channel adjustment through single valve core rotation operation and integration is not available in the prior art. Disclosure of Invention In order to overcome the defects of the prior art, the application provides the three-way reversing ball valve, which can automatically change the form of an internal flow passage according to a switched flow passage, thereby simultaneously meeting the two distinct working condition requirements of slurry low-resistance conveying and high-efficiency washing of washing water. The application is realized by the following technical scheme: A three-way reversing ball valve comprising: The middle part of the valve body is provided with a valve cavity, and the valve body is provided with a main interface, a first auxiliary interface and a second auxiliary interface which are communicated with the valve cavity; The valve core is rotationally connected in the valve cavity, a flow passage allowing fluid to pass through is arranged in the valve core, and the wall part of the flow passage at least comprises a flexible part capable of elastically deforming; The rotary driving mechanism is fixedly arranged on the valve body and used for driving the valve core to rotate, and the position of the internal flow passage in the valve cavity is adjusted so as to drive the two ends of the flow passage to be selectively communicated with the main interface and the first auxiliary interface or the main interface and the second auxiliary interface along with the rotation of the valve core; And the turbulence