A high pressure hard seal ball valve

Abstract

The present invention relates to the technical field of ball valves, and in particular to a high-pressure hard-sealed ball valve. It comprises a first shell, one side of the first shell is detachably connected to a second shell, the first shell and the second shell are both fixed with seals, the first shell is rotatably connected to a blocking ball, the blocking ball is sealingly matched with the two sealings, one side of the blocking ball is fixed with a rotating part that rotatably matches with the first shell, the second shell is detachably connected to a material guide shell on a side away from the first shell, the material guide shell is sealingly and slidably connected to a first sliding shell, the first sliding shell is rotatably connected to a circular array of rotating baffles that are all located in the material guide shell. The present invention adopts a method of pre-treating the pipeline before the high-pressure hard-sealed ball valve is used to reduce the pressure of the liquid in the pipeline in advance, thereby reducing the impact force of the liquid in the pipeline on the ball and increasing the service life of the ball.

Description

Technical Field

[0001] The invention relates to the technical field of ball valves, and in particular to a high-pressure hard-sealed ball valve. Background Art

[0002] In the high-pressure water pipes in urban water supply systems and water conservancy projects, in order to ensure the sealing of the liquid in the pipe, a high-pressure hard-sealed ball valve is usually used. It is a valve specially designed to work in a high-pressure environment. It is mainly used to control the flow rate of the liquid in the pipe and the opening and closing of the pipe. The high-pressure hard-sealed ball valve is composed of a valve seat, a ball and other parts. Its high sealing performance mainly depends on the precise grinding and matching between the ball and the valve seat.

[0003] When a traditional high-pressure hard-sealed ball valve is blocking a pipeline, the high-pressure water flow will directly impact the ball. When the high-pressure water flow carries granular impurities, the granular impurities will impact the sealing surface of the ball along with the flow of the high-pressure water flow, causing physical wear on the sealing surface of the ball, thereby reducing the sealing between the ball and the valve seat, and causing leakage, thereby reducing the service life of the ball and the valve seat. Summary of the invention

[0004] In order to solve the problem that when a traditional high-pressure hard-sealed ball valve is used to block a pipeline, the high-pressure water flow carrying granular impurities causes physical wear on the sealing surface of the ball, thereby reducing the service life, the present invention provides a high-pressure hard-sealed ball valve.

[0005] The technical solution of the present invention is: a high-pressure hard-sealed ball valve, comprising a first shell, a second shell being detachably connected to one side of the first shell, sealing members being fixedly connected inside the first shell and the second shell, a sealing ball being rotatably connected to the first shell, the sealing ball being sealingly matched with the two sealing members, a rotating member being fixedly connected to one side of the sealing ball and rotatably matched with the first shell, a material guide shell being detachably connected to the side of the second shell away from the first shell, the material guide shell being sealingly and slidably connected to a first sliding shell, and the first sliding shell being rotatably connected to a ring-shaped array of rotating baffles all located inside the material guide shell.

[0006] Furthermore, the material guide shell is fixedly connected to a limit frame of an annular array, the limit frames of the annular array are all provided with sliding grooves, the rotating baffles are slidably and rotatably matched with the adjacent limit frames and the sliding grooves thereon, the number of the limit frames and the rotating baffles is the same, the back sides of the rotating baffles of the annular array are fixedly connected with gears, an electric push rod is provided on the side of the material guide shell away from the second shell body, the telescopic end of the electric push rod is fixedly connected to the first sliding shell, and the rotating baffles of the annular array are all in contact and matched with the material guide shell.

[0007] Furthermore, one side of the material guide shell close to the second shell body is fixedly connected with an annular array of extrusion frames with the same number as the rotating baffles, the extrusion frames of the annular array are all fixedly connected with first elastic telescopic parts, the telescopic ends of the first elastic telescopic parts of the annular array are all fixedly connected with rack frames, and the rack frames are connected to the adjacent gear transmission.

[0008] Further, the first sliding shell is fixedly connected to a second elastic telescopic member of an annular array, the telescopic end of the second elastic telescopic member is fixedly connected to a U-shaped limit frame, the rotating baffle is slidably connected to the second sliding shell, the second sliding shell is rotatably connected to a side away from the adjacent rotating baffle with a fixing member, the fixing member is limited and slidably matched with the adjacent U-shaped limit frame, the fixing member is extrusion-matched with the adjacent extrusion frame, the rotating baffle is slidably connected to a symmetrical shielding shell, the shielding shell is limited and slidably connected to a shielding plate, the second sliding shell is hinged on one side located in the adjacent rotating baffle with a symmetrical hinged rod, and the hinged rod is hinged to the adjacent shielding plate.

[0009] Furthermore, a third sliding shell is slidably connected inside the material guide shell, a connecting piece is fixedly connected to the side of the third sliding shell facing the rotating baffles in the annular array, the connecting piece is slidably matched with the opposite sides of all the rotating baffles, all the shielding shells and all the shielding plates, the third sliding shell is fixedly connected to an annular array of Z-shaped plates with the same number as the rotating baffles, the side of the Z-shaped plate away from the third sliding shell is rotatably matched with the adjacent rotating baffle, and the Z-shaped plates in the annular array are all slidably matched with the material guide shell.

[0010] Furthermore, the rotating baffles of the annular array are all located between the third sliding shell and the second shell, and a guide surface is provided on a side of the third sliding shell away from the rotating baffles of the annular array.

[0011] Furthermore, it also includes a liquid holding shell, which is fixedly connected to the outer periphery of the material guiding shell and away from the side of the second shell body, a piston is sealingly and slidably connected inside the liquid holding shell, a compressible gas is arranged inside the liquid holding shell, the liquid holding shell is fixedly connected and connected with a symmetrical L-shaped tube, and the symmetrical L-shaped tubes penetrate the material guiding shell and are connected with it on the side away from the liquid holding shell.

[0012] Furthermore, a material feeding piece is fixedly connected to the outer side of the middle part of the first sliding shell, the rotating baffle is provided with symmetrical and linear array communicating holes, the material feeding piece is fixedly connected and connected to the outer peripheral side of the second sliding shell of the annular array, the material feeding piece is connected to the material guide shell through the rotating baffle and the symmetrical and linear array communicating holes on the rotating baffle, and the side of the material feeding piece away from the rotating baffle of the annular array is fixedly connected and connected to the liquid containing shell.

[0013] Furthermore, one side of the liquid containing shell is fixedly connected and communicated with a first connecting tube, the third sliding shell is provided with a plurality of connecting holes, the side of the first connecting tube away from the liquid containing shell passes through the material guiding shell and is fixedly connected and communicated with the third sliding shell, and the first connecting tube is communicated with the material guiding shell through the third sliding shell and a plurality of connecting holes on the third sliding shell.

[0014] Furthermore, a second connecting pipe is fixedly connected and communicated with the other side of the liquid containing shell, and a side of the second connecting pipe away from the liquid containing shell is fixedly connected and communicated with the material guiding shell, and the rotating baffles of the annular array are all located between the first connecting pipe and the second connecting pipe.

[0015] Compared with the prior art, the technical effect achieved by the present invention is as follows: the present invention adopts a method of pre-treating the pipeline before the high-pressure hard-sealed ball valve is used to reduce the pressure of the liquid in the pipeline in advance, thereby reducing the impact force of the liquid in the pipeline on the ball and increasing the service life of the ball; in the process of sealing the material guide shell, the baffle plate cooperates with the adjacent baffle shell to seal the inside of the material guide shell and cut off the liquid in the material guide shell, thereby achieving the effect of preferentially sealing the "pipeline" before the sealing ball, which is used to solve the problem that in the process of sealing the first shell, the sealing ball is affected by granular impurities in the water flow, causing the sealing surface of the sealing ball to be worn, thereby resulting in the sealing effect of the sealing ball being reduced and unable to maintain the seal on the first shell. Problem: After the baffle plate contacts the adjacent baffle plate, the outer peripheral sides of all rotating baffles are in contact with the inner side of the guide shell, thereby enhancing the stability of all rotating baffles; the present invention adopts a method of real-time monitoring of the pressure in the pipeline. When the pressure in the pipeline increases, the piston is compressed to store energy, and this part of the energy is released when the pressure drops, thereby balancing the pressure fluctuations, and through the method of multi-pipeline connection, the water hammer pressure wave is dispersed in a uniform manner, so that each connecting pipe can independently absorb a part of the water hammer energy, thereby effectively relieving the pressure on the main pipeline and protecting the pipeline system. Relying on the multi-pipeline connection method, even if one or two connecting pipes fail, the other connecting pipes can continue to function, thereby improving the safety of pipeline pressure relief. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view of the three-dimensional structure of the present invention;

[0017] Figure 2 It is a front cross-sectional view of the three-dimensional structure of the present invention;

[0018] Figure 3 is a three-dimensional structural cross-sectional view of the second shell of the present invention;

[0019] Figure 4 It is a right view of the three-dimensional structure of the material guide shell of the present invention;

[0020] Figure 5 It is a three-dimensional structural cross-sectional view of the first sliding shell of the present invention;

[0021] Figure 6 It is a three-dimensional structural cross-sectional view of the material guide shell of the present invention;

[0022] Figure 7 It is a three-dimensional structural schematic diagram of the gear and rack frame of the present invention;

[0023] Figure 8 It is a schematic diagram of the three-dimensional structure of the rotating baffle and the limiting frame of the present invention;

[0024] Fig. 9 It is a three-dimensional structural cross-sectional view of the rotating baffle of the present invention;

[0025] Fig.10 It is a sectional view of the three-dimensional structure of the shielding shell of the present invention.

[0026] Figure numbers: 10-first shell, 11-second shell, 12-seal, 13-blocking ball, 14-rotating member, 15-material guide shell, 16-first sliding shell, 17-rotating baffle, 20-limiting frame, 22-gear, 23-electric push rod, 30-extrusion frame, 31-first elastic telescopic member, 32-rack frame, 40-second elastic telescopic member, 41-U-shaped limiting frame, 42-fixing member, 43-second sliding shell, 44-shielding shell, 45-shielding plate, 46-hinge rod, 50-third sliding shell, 51-connecting member, 52-Z-shaped plate, 60-liquid storage shell, 61-piston, 62-L-shaped tube, 7-feeding member, 8-first connecting tube, 9-second connecting tube. DETAILED DESCRIPTION

[0027] The present invention is further described below in conjunction with specific embodiments. It should also be noted that, unless otherwise clearly specified and limited, terms such as "setting" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In order to solve the problem that when traditional high-pressure hard-sealed ball valves are used to block pipelines, high-pressure water flow carrying granular impurities will cause physical wear on the sealing surface of the ball, thereby reducing the service life, the present invention adopts a method of pre-treating the pipeline before the high-pressure hard-sealed ball valve is used to reduce the pressure of the liquid in the pipeline in advance, thereby reducing the impact force of the liquid in the pipeline on the ball.

[0029] Example 1: A high pressure hard seal ball valve, please refer to Figure 1-Figure 7, including a first shell 10, the right side of the first shell 10 is detachably connected to the second shell 11, the inner side of the first shell 10 and the inner side of the second shell 11 are fixedly connected with a seal 12, the seal 12 is a hard sealing ring, the first shell 10 is limitedly rotatably connected with a blocking ball 13, the blocking ball 13 and the two sealing members 12 are sealed and rotated, the two sealing members 12 are used to perform hard sealing on the blocking ball 13, and the upper side of the blocking ball 13 is fixedly connected with a rotating ring that is limitedly rotated with the first shell 10 Part 14, the right side of the second shell body 11 is detachably connected with a material guide shell 15, the outer side of the material guide shell 15 is slidingly connected with a first sliding shell 16 in a limiting seal, and the first sliding shell 16 is rotatably connected with four rotating baffles 17 in an annular array in a limiting seal, and the facing parts of the rotating baffles 17 in the annular array are all located in the material guide shell 15. Through the rotation of the rotating baffles 17, part of the space in the material guide shell 15 is blocked, thereby reducing the circulation of liquid in the material guide shell 15, thereby reducing the impact of the liquid on the blocking ball 13.

[0030] Please refer to Figure 3-Figure 8 , the guide shell 15 is fixedly connected with four limit frames 20 of the annular array, and the back sides of the four limit frames 20 of the annular array are provided with sliding grooves, and the rotating baffle 17 slides and rotates with the adjacent limit frames 20 and the sliding grooves thereon. When the rotating baffle 17 is located on the right part of the adjacent limit frame 20, the rotating baffle 17 can only slide left and right. When the rotating baffle 17 is located on the left part of the adjacent limit frame 20, the rotating baffle 17 can not only slide left and right, but also rotate. The back sides of the four rotating baffles 17 of the annular array are fixedly connected with gears 22, and an electric push rod 23 is provided on the left side of the guide shell 15. The telescopic end of the electric push rod 23 is fixedly connected to the first sliding shell 16. The rotating baffles 17 of the annular array are all in contact with the guide shell 15. The four vertical edges of the rotating baffle are provided with arc surfaces for guiding the liquid, so as to reduce the impact force of the liquid on the side of the rotating baffle 17.

[0031] Please refer to Figure 3-Figure 8 Four extrusion racks 30 in an annular array are fixedly connected to the left side of the material guide shell 15, and a first elastic telescopic member 31 is fixedly connected to the middle of the annular array extrusion rack 30. The first elastic telescopic member 31 is a multi-stage elastic telescopic rod. The telescopic ends of the first elastic telescopic members 31 in the annular array are fixedly connected to a rack rack 32, and the rack rack 32 is transmission-connected to the adjacent gear 22.

[0032] Please refer to Figure 6-Figure 10The outer peripheral side of the first sliding shell 16 is fixedly connected with four second elastic telescopic members 40 in an annular array, and the telescopic end of the second elastic telescopic member 40 is fixedly connected with a U-shaped limit frame 41. The rotating baffle 17 is limited and sealed and slidably connected with a second sliding shell 43. The second sliding shell 43 is rotatably connected with a fixing member 42 on the side away from the adjacent rotating baffle 17. The fixing member 42 is limited and slidably matched with the adjacent U-shaped limit frame 41. The back side of the annular array distribution fixing members 42 is provided with an inclined surface, and the inclined surface faces the left side. The right side of the annular array extrusion frame 30 is provided with an inclined surface, and the inclined surface faces the right side. The inclined surface on the extrusion frame 30 is pressed and matched with the inclined surface on the adjacent fixing member 42. The rotating baffle 17 is sealed and slidably connected with two symmetrical shielding shells 4 4. A baffle plate 45 is slidably connected to the limit seal in the baffle shell 44. A symmetrical hinged rod 46 is hinged on one side of the second sliding shell 43 located in the adjacent rotating baffle plate 17. The hinged rod 46 is hinged to the adjacent baffle plate 45. When the baffle plate 45 on the rotating baffle plate 17 rotates to contact the adjacent baffle plate 45 on the adjacent rotating baffle plate 17, the liquid in the guide shell 15 is cut off, thereby achieving the effect of preferentially blocking the "pipeline" before the blocking ball 13, which is used to solve the problem that when the blocking ball 13 is blocking the first shell 10, the blocking ball 13 is affected by granular impurities in the water flow, and the sealing surface of the blocking ball 13 is worn, thereby resulting in the sealing effect of the blocking ball 13 being reduced and unable to maintain the sealing of the first shell 10.

[0033] Please refer to Figure 4 and Figure 6-Figure 8 The guide shell 15 is limitedly slidably connected with a third sliding shell 50, which is cross-shaped. A connecting member 51 is fixedly connected to the middle of the left side of the third sliding shell 50. The connecting member 51 is composed of a fixed ball and a connecting rod fixed to each other. The fixed ball on the connecting member 51 is slidably matched with the opposite sides of all the rotating baffles 17, all the shielding shells 44 and all the shielding plates 45. The left side of the connecting member 51 is a spherical surface. The opposite sides of all the rotating baffles 17, all the shielding shells 44 and all the shielding plates 45 slide along the left spherical surface of the connecting member 51. The left side of the third sliding shell 50 is fixedly connected with a ring array of Z-shaped plates 52 with the same number as the rotating baffles 17. The left side of the Z-shaped plate 52 is limited and rotated with the adjacent rotating baffles 17. The Z-shaped plates 52 in the ring array are all slidably matched with the guide shell 15. The rotating baffles 17 in the ring array are all located between the third sliding shell 50 and the second shell 11. A guide surface is provided on the right side of the third sliding shell 50. The cross-section of the third sliding shell 50 is composed of an isosceles triangle and a rectangle. The surfaces corresponding to the two waists of the isosceles triangle are guide surfaces.

[0034] When the device is needed to control the flow rate of liquid in a pipeline, the user places the device between two pipelines and fixes them with bolts. After the device is installed, the liquid in the pipeline flows from the right to the left, and the liquid flowing to the left impacts the right side of the third sliding shell 50. Under the effect of the isosceles triangle in the cross section of the right side of the third sliding shell 50, the liquid is guided to reduce the resistance of the third sliding shell 50 to the liquid. Under the effect of the third sliding shell 50 guiding the liquid, the impact of the liquid on the right side of all the rotating baffles 17 is reduced, thereby enhancing the stability of all the rotating baffles 17.

[0035] When it is necessary to cut off the liquid in the pipeline, the user controls the electric push rod 23 to push the first sliding shell 16 to the left. During the movement of the first sliding shell 16 to the left, all the rotating baffles 17, all the gears 22 and the parts thereon are driven to move to the left synchronously (under the limiting effect of the limit frame 20, the rotating baffles 17 will not rotate randomly during the movement). During the movement of all the rotating baffles 17 to the left, they move to the left along the adjacent limit frames 20 respectively. During the movement of the back sides of all the rotating baffles 17 to the left, they move to the left along the slide grooves on the limit frame 20 respectively. All the rotating baffles 17 drive the third sliding shell 50 to move to the left in the material guide shell 15 through all the Z-shaped plates 52.

[0036] When all the rotating baffles 17 have slid to the left of the adjacent limiting frame 20, the limiting of all the rotating baffles 17 has been released (all the rotating baffles 17 can rotate freely), and the gear 22 is now meshed with the adjacent rack rack 32. With the movement of the first sliding shell 16, the gear 22 drives the adjacent rotating baffle 17 to rotate along the adjacent rack rack 32 (through the rotation of the rotating baffle 17, part of the space in the material guide shell 15 is blocked, thereby reducing the flow of liquid in the material guide shell 15, and further reducing the impact of the liquid on the blocking ball 13). After the rotating baffle 17 rotates 90°, the adjacent gear 22 contacts the right side surface of the middle part of the adjacent rack rack 32, thereby realizing the limiting of the rotation angle of the adjacent gear 22 and the rotating baffle 17.

[0037] When all the rotating baffles 17 have rotated 90°, and at this time all the fixing members 42 have respectively contacted the right side of the adjacent extrusion frame 30, and then the first sliding shell 16 continues to move to the left. During this process, the first sliding shell 16 drives all the rotating baffles 17 to move to the left synchronously. During the movement of the rotating baffles 17 to the left, the adjacent rack frame 32 is squeezed to the left, so that the telescopic parts of all the first elastic telescopic members 31 retract to the left. During the movement of the rotating baffles 17 and the adjacent fixing members 42 to the left, they are blocked by the extrusion frame 30, so that the inclined surface of the extrusion frame 30 squeezes the inclined surface of the adjacent fixing member 42, so that the fixing member 42 drives the adjacent second sliding shell 43 to move in the direction of the axis of the guide shell 15 (during the movement of the fixing member 42), the first sliding shell 16 drives all the rotating baffles 17 to move to the left synchronously. The adjacent U-shaped limit frame 41 is driven to squeeze the telescopic part of the adjacent second elastic telescopic member 40, thereby realizing the force storage of the second elastic telescopic member 40). During the movement of the second sliding shell 43, the two adjacent hinged rods 46 are squeezed, and the two hinged rods 46 respectively squeeze the adjacent baffle plates 45, so that the baffle plates 45 are rotated along the left side of the connecting member 51. After the baffle plates 45 are rotated to the side away from the connecting member 51 and are limited by the adjacent baffle shells 44, the baffle plates 45 drive the adjacent baffle shells 44 to rotate synchronously along the connecting member 51. When the baffle plates 45 on the rotating baffle plate 17 are rotated to contact the adjacent baffle plates 45 on the adjacent rotating baffle plate 17, the liquid in the guide shell 15 has been cut off, thereby realizing the effect of preferentially blocking the "pipeline" before the blocking ball 13.

[0038] When the baffle plate 45 on the rotating baffle plate 17 contacts the adjacent baffle plate 45 on the adjacent rotating baffle plate 17, the sealing of the material guide shell 15 is completed. At this time, under the action of the movement of the first sliding shell 16, the outer peripheral sides of all the rotating baffle plates 17 are fitted with the left side of the middle part of the material guide shell 15, so as to enhance the stability of all the rotating baffle plates 17. After completing the above steps, the telescopic part of the electric push rod 23 stops moving. Through the above steps, the effect of pre-sealing the material guide shell 15 is achieved, which is used to solve the problem that in the process of sealing the first shell 10, the sealing ball 13 is affected by the granular impurities in the water flow, and the sealing surface of the sealing ball 13 is worn, thereby resulting in the sealing effect of the sealing ball 13 being reduced and unable to maintain the sealing of the first shell 10.

[0039] When the sealing inside the material guide shell 15 is completed, the user operates the rotating part 14, and the rotating part 14 drives the sealing ball 13 to rotate. During the rotation of the sealing ball 13, it contacts with the two sealing parts 12, so as to achieve hard sealing during the rotation of the sealing ball 13. The sealing ball 13 can seal the first shell 10 and the second shell 11 only after rotating 90°.

[0040] After the blocking inside the first shell 10 and the second shell 11 is completed, the user controls the electric push rod 23 to drive the first sliding shell 16 to move to the right and reset. The first sliding shell 16 drives all the rotating baffles 17 and their attached parts to move to the right (the adjacent rack frame 32 is also reset and moved during the movement of the rotating baffle 17, and the telescopic part of the first elastic telescopic member 31 is reset and moved to the right during the movement of the rack frame 32). Taking the movement process of one of the rotating baffles 17 and its attached parts as an example, during the movement of the rotating baffle 17 to the right, the fixing member 42 thereon gradually breaks away from the contact with the adjacent extrusion frame 30. Under the action of the elastic force released by the second elastic telescopic member 40, the U-shaped limit frame 41 drives the adjacent fixing member 42 and the adjacent second sliding shell 43 to move in the direction away from the axis of the material guide shell 15. During the reset movement of the second sliding shell 43, the adjacent two shielding plates 45 are dragged by the adjacent two hinged rods 46, and the adjacent shielding shell 44 is driven by the shielding plate 45 to reset and rotate along the left side of the connecting member 51, and the connection between the material guide shell 15 and the second shell 11 is gradually restored.

[0041] When the fixing member 42 moves along with the adjacent rotating baffle 17 until the fixing member 42 is no longer squeezed by the adjacent squeezing frame 30, the telescopic portion of the first elastic telescopic member 31 moves to the extreme position. At this time, the rotating baffle 17 still moves to the right along with the first sliding shell 16. Under the action of the engagement between the rack frame 32 and the adjacent gear 22, the rotating baffle 17 rotates during the process of resetting and moving.

[0042] When the rotating baffle 17 moves to the point where the gear 22 on it is no longer in contact with the adjacent rack 32, the rotating baffle 17 has been reset and rotated to Figure 6 In the state, the rotating baffle 17 has contacted the adjacent limiting frame 20, and the limiting frame 20 limits the adjacent rotating baffle 17 so that the rotating baffle 17 will not rotate at will. Figure 6 After the state is in, the user no longer operates the electric push rod 23.

[0043] When it is necessary to release the blockage of the pipeline, the staff controls the rotating member 14 to make the rotating member 14 drive the blocking ball 13 to rotate in the opposite direction, thereby releasing the blockage of the first shell 10 and the second shell 11, so that the first shell 10 and the second shell 11 can continue to transport liquid.

[0044] During the normal process of conveying liquid in a pipeline, when the valve or pump at the end of the pipeline suddenly stops, the liquid flow stops instantly, but due to the inertia of the liquid, the liquid near the valve or pump will continue to flow in the pipeline, and the subsequent liquid in the pipeline will continue to push, which will cause the pressure in the pipeline to rise sharply. This situation is the water hammer phenomenon. When the water hammer phenomenon occurs in the pipeline, it will cause the pipeline, the ball in the valve, the joint and other components to suffer mechanical stress, causing rupture, deformation or loosening, and in severe cases, it will cause damage to the pipeline structure.

[0045] In order to solve the above-mentioned problems, the present invention adopts a method of real-time monitoring of the pressure in the pipeline. When the pressure in the pipeline increases, the piston 61 is compressed to store energy, and this energy is released when the pressure drops, so as to balance the fluctuations caused by the pressure. By connecting multiple pipelines, the water hammer pressure wave is dispersed in a uniform manner, so that each connecting pipe can independently absorb a part of the water hammer energy, thereby effectively relieving the pressure on the main pipeline and protecting the pipeline system. In addition, relying on the connection method of multiple pipelines, even if one or two connecting pipes fail, the other connecting pipes can continue to function, thereby improving the safety of pipeline pressure relief.

[0046] Example 2: Based on Example 1, please refer to Figure 1-Figure 4 and Figure 6 , also includes a liquid holding shell 60, the liquid holding shell 60 is fixedly connected to the right part of the upper side of the material guiding shell 15, and a piston 61 is slidably connected to the liquid holding shell 60 through a limit seal, and a compressible gas is arranged in the liquid holding shell 60, and the compressible gas in the liquid holding shell 60 is located above the piston 61, and the lower side of the liquid holding shell 60 is fixedly connected and connected with two front-to-back symmetrical L-shaped tubes 62, and the lower sides of the two front-to-back symmetrical L-shaped tubes 62 both penetrate the material guiding shell 15 and are connected thereto. When the pressure in the material guiding shell 15 increases, part of the pressurized liquid flows into the liquid holding shell 60 through the two L-shaped tubes 62, so that the piston 61 in the liquid holding shell 60 floats upward, thereby alleviating the pressure fluctuation in the material guiding shell 15, and the two L-shaped tubes 62 are both located below the piston 61.

[0047] Please refer to Figure 3 and Figure 6-Figure 8The outer side of the middle of the first sliding shell 16 is fixedly connected to a material feeding member 7 located below the piston 61. The material feeding member 7 is composed of a fixed ring and five bellows that are fixedly connected and connected to each other. The rotating baffle 17 is provided with symmetrical and linear array of connecting holes. The material feeding member 7 is fixedly connected and connected to the outer side of the annular array second sliding shell 43. The four bellows on the material feeding member 7 near the center of the inner fixed ring are respectively connected to the material guide shell 15 through the adjacent second sliding shell 43, the adjacent rotating baffle 17 and the symmetrical and linear array of connecting holes on the adjacent rotating baffle 17. The right end of the bellows on the right side of the material feeding member 7 is connected to the liquid holding shell 60. The high-pressure liquid in the material guide shell 15 is fixedly connected and communicated. The high-pressure liquid in the material guide shell 15 enters the rotating baffle 17 through the communicating holes on all the rotating baffles 17 that are close to the liquid side and in a linear array, and is guided to the material feeding member 7 through the rotating baffle 17. The material feeding member 7 transports the liquid to the liquid holding shell 60, so that the piston 61 moves upward, thereby achieving the effect of reducing the pressure in the material guide shell 15. Under the action of the liquid entering the rotating baffle 17 through the communicating holes on the annular array rotating baffle 17 that are close to the liquid side and in a linear array, the pressure of the liquid is released in a circumferentially uniform manner, thereby reducing the impact of the high-pressure liquid on the components in the material guide shell 15.

[0048] Please refer to Figure 4 , Figure 6 and Figure 8 The right side of the liquid holding shell 60 is fixedly connected and communicated with a first connecting pipe 8 located below the piston 61. The lower side of the first connecting pipe 8 is corrugated. A plurality of connecting holes are arranged on the right side of the third sliding shell 50. The lower side of the first connecting pipe 8 passes through the material guide shell 15 and is fixedly connected and communicated with the third sliding shell 50. The first connecting pipe 8 is communicated with the material guide shell 15 through the third sliding shell 50 and a plurality of connecting holes thereon. The first connecting pipe 8 is used to share the pressure of the material guide shell 15. The left side of the liquid holding shell 60 is fixedly connected and communicated with a second connecting pipe 9 located below the piston 61. The left side of the second connecting pipe 9 is fixedly connected and communicated with the material guide shell 15. The rotating baffles 17 of the annular array are all located between the first connecting pipe 8 and the second connecting pipe 9. The liquid enters the liquid holding shell 60 through the second connecting pipe 9, causing the piston 61 to float upward, thereby achieving buffering of the left side of the material guide shell 15.

[0049] When water hammer occurs in the pipeline, part of the liquid with increased pressure flows through the material guide shell 15, and part of the pressurized liquid flows into the liquid holding shell 60 through the two L-shaped tubes 62, causing the piston 61 in the liquid holding shell 60 to float upward, thereby alleviating the pressure fluctuation in the material guide shell 15. Another part of the liquid with increased pressure flows into the third sliding shell 50 through all the connecting holes on the third sliding shell 50, and flows into the liquid holding shell 60 through the third sliding shell 50 and the first connecting tube 8, causing the piston 61 to continue to float upward and squeeze the compressible gas in the liquid holding shell 60, thereby further alleviating the pressure fluctuation in the material guide shell 15.

[0050] When it is necessary to block the material guide shell 15, the first sliding shell 16 moves to the left so that the right side bellows on the material feeding member 7 is stretched, and the blocking process of the rotating baffle 17 can be repeated in Example 1. The second sliding shell 43 pulls the adjacent bellows inside the material feeding member 7 when it moves in the axial direction of the material guide shell 15, and the material guide shell 15 is blocked during the rotation of the rotating baffle 17 and its accessory parts.

[0051] When the material guide shell 15 encounters high-pressure liquid in the blocked state (this situation occurs when: the pump suddenly stops working, which causes the water hammer phenomenon mentioned above), the liquid enters the rotating baffle 17 through the connecting holes on all the rotating baffles 17 that are close to the liquid side and in a linear array, and is guided to the material feeding member 7 through the rotating baffle 17, and the material feeding member 7 transports the liquid to the liquid holding shell 60, so that the piston 61 moves upward and squeezes the compressible gas in the liquid holding shell 60 to achieve the effect of reducing pressure. Under the action of the liquid entering the rotating baffle 17 through the connecting holes on the annular array rotating baffle 17 that are close to the liquid side and in a linear array, the pressure of the liquid is released in a circumferentially uniform manner, thereby reducing the impact of the high-pressure liquid on the components in the material guide shell 15.

[0052] In the process of all rotating baffles 17 releasing the blockage in the material guide shell 15, the liquid gradually enters the second shell 11 from the material guide shell 15 (the premise of this situation is that the blocking ball 13 has blocked the first shell 10 and the second shell 11). When the liquid in the material guide shell 15 enters the second shell 11 at a pressure higher than the pressure required for work, the liquid enters the liquid holding shell 60 through the second connecting pipe 9, causing the piston 61 to float upward and squeeze the compressible gas in the liquid holding shell 60, thereby achieving pressure relief when exchanging the liquids in the material guide shell 15 and the second shell 11.

[0053] When the pressure in the material guiding shell 15 is stable, the piston 61 is reset and moved downward along the liquid holding shell 60 under the action of the pressure release of the compressible gas in the liquid holding shell 60 .

[0054] While the disclosure has been described with respect to only a limited number of embodiments, those skilled in the art, having benefit of this disclosure, will appreciate that numerous other embodiments can be devised which do not depart from the scope of the invention.

Claims

1. A high pressure hard seal ball valve, characterized by: The invention comprises a first shell (10), one side of the first shell (10) is detachably connected to a second shell (11), the first shell (10) and the second shell (11) are both fixedly connected with sealing members (12), the first shell (10) is rotatably connected to a blocking ball (13), the blocking ball (13) is sealingly matched with the two sealing members (12), one side of the blocking ball (13) is fixedly connected to a rotating member (14) rotatably matched with the first shell (10), the second shell (11) is detachably connected to a material guide shell (15) on a side away from the first shell (10), the material guide shell (15) is sealingly slidably connected to a first sliding shell (16), the first sliding shell (16) is rotatably connected to rotating baffles (17) in an annular array and all located in the material guide shell (15); The material guide shell (15) is fixedly connected to a limiting frame (20) of an annular array, and the limiting frames (20) of the annular array are all provided with sliding grooves. The rotating baffles (17) are slidably and rotationally matched with the adjacent limiting frames (20) and the sliding grooves thereon. The number of the limiting frames (20) and the rotating baffles (17) is the same. The back side of the rotating baffles (17) of the annular array is fixedly connected to a gear (22). The side of the material guide shell (15) away from the second shell (11) is provided with an electric push rod (23), and the telescopic end of the electric push rod (23) is fixedly connected to the first sliding shell (16). The rotating baffles (17) of the annular array are all in contact with and matched with the material guide shell (15); A side of the material guide shell (15) close to the second shell body (11) is fixedly connected with an annular array of extrusion racks (30) whose number is the same as the number of the rotating baffles (17); the annular array of extrusion racks (30) are all fixedly connected with first elastic telescopic parts (31); the telescopic ends of the first elastic telescopic parts (31) of the annular array are all fixedly connected with rack racks (32); the rack racks (32) are drivingly connected with the adjacent gears (22); The first sliding shell (16) is fixedly connected to a second elastic telescopic member (40) in an annular array, the telescopic end of the second elastic telescopic member (40) is fixedly connected to a U-shaped limit frame (41), the rotating baffle (17) is slidably connected to a second sliding shell (43), the second sliding shell (43) is rotatably connected to a fixing member (42) at a side away from the adjacent rotating baffle (17), the fixing member (42) is limitedly slidably matched with the adjacent U-shaped limit frame (41), the fixing member (42) is extrusion-matched with the adjacent extrusion frame (30), the rotating baffle (17) is slidably connected to a symmetrical shielding shell (44), the shielding shell (44) is limitedly slidably connected to a shielding plate (45), the second sliding shell (43) is hingedly connected to a symmetrical hinged rod (46) at one side located inside the adjacent rotating baffle (17), and the hinged rod (46) is hingedly connected to the adjacent shielding plate (45); A third sliding shell (50) is slidably connected inside the material guide shell (15); a connecting member (51) is fixedly connected to a side of the third sliding shell (50) facing the rotating baffles (17) in the annular array; the connecting member (51) is slidably matched with the opposite sides of all the rotating baffles (17), all the shielding shells (44) and all the shielding plates (45); the third sliding shell (50) is fixedly connected to an annular array of Z-shaped plates (52) whose number is the same as the rotating baffles (17); a side of the Z-shaped plates (52) away from the third sliding shell (50) is rotatably matched with an adjacent rotating baffle (17); and the Z-shaped plates (52) in the annular array are all slidably matched with the material guide shell (15).

2. A high pressure hard seal ball valve according to claim 1, characterized in that: The rotating baffles (17) of the annular array are all located between the third sliding shell (50) and the second shell (11), and a guide surface is provided on a side of the third sliding shell (50) away from the rotating baffles (17) of the annular array.

3. A high pressure hard seal ball valve according to claim 1, characterized in that: The invention also comprises a liquid containing shell (60), wherein the liquid containing shell (60) is fixedly connected to the outer periphery of the material guiding shell (15) and is away from the side of the second shell body (11), a piston (61) is sealingly and slidably connected inside the liquid containing shell (60), a compressible gas is arranged inside the liquid containing shell (60), and the liquid containing shell (60) is fixedly connected to and communicated with a symmetrical L-shaped tube (62), and the symmetrical L-shaped tube (62) on the side away from the liquid containing shell (60) both penetrates the material guiding shell (15) and is communicated with it.

4. A high pressure hard seal ball valve according to claim 3, characterized in that: A material feeding member (7) is fixedly connected to the outer side of the middle part of the first sliding shell (16); the rotating baffle (17) is provided with symmetrical communication holes in a linear array; the material feeding member (7) is fixedly connected and connected to the outer peripheral side of the annular array second sliding shell (43); the material feeding member (7) is connected to the material guide shell (15) through the rotating baffle (17) and the symmetrical communication holes in a linear array on the rotating baffle (17); the side of the material feeding member (7) away from the annular array rotating baffle (17) is fixedly connected and connected to the liquid holding shell (60).

5. A high pressure hard seal ball valve according to claim 4, characterized in that: A first connecting pipe (8) is fixedly connected to and communicated with one side of the liquid holding shell (60); the third sliding shell (50) is provided with a plurality of communicating holes; a side of the first connecting pipe (8) away from the liquid holding shell (60) passes through the material guiding shell (15) and is fixedly connected to and communicated with the third sliding shell (50); the first connecting pipe (8) is communicated with the material guiding shell (15) through the third sliding shell (50) and a plurality of communicating holes on the third sliding shell (50).

6. A high pressure hard seal ball valve according to claim 5, characterized in that: The other side of the liquid holding shell (60) is fixedly connected to and communicated with a second connecting pipe (9), and the side of the second connecting pipe (9) away from the liquid holding shell (60) is fixedly connected to and communicated with the material guiding shell (15), and the rotating baffles (17) of the annular array are all located between the first connecting pipe (8) and the second connecting pipe (9).

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