A regulating ball valve with pressure reduction and noise reduction functions

Abstract

The present invention discloses a regulating ball valve with pressure reduction and noise reduction functions, which relates to the technical field of ball valves, including a shell, an electric control mechanism is arranged above the shell, a sphere and a petal are arranged inside the shell, the petal is in an arc shape, a fluid channel is opened in the middle area of ​​the sphere, the petal is located in the gap between the sphere and the shell, the electric control mechanism is used to change the deflection angle of the petal relative to the sphere, and then close one end of the fluid channel, the vertical cross section of the fluid channel is a symmetrical triangle, and the height of the through section of the fluid channel close to the horizontal center line of the shell is less than the height of the through section away from the horizontal center line of the shell. The present invention optimizes the fluid channel so that the passage path of the fluid does not need to be deflected at a large angle, and the fluid travel route is roughly a straight line, so as to avoid large differences in the passage cross section of the fluid in a short time, so as to cause phenomena such as turbulent flash cavitation and generate noise.

Description

Technical Field

[0001] The invention relates to the technical field of ball valves, in particular to a regulating ball valve with pressure reduction and noise reduction functions. Background Art

[0002] Ball valves are mainly used in pipelines to cut off, distribute and change the flow direction of the medium. They can be closed tightly by simply rotating 90° and using a very small torque. Therefore, ball valves are most suitable for use as switches and cut-off valves.

[0003] When a ball valve is used as a control valve, the moment the valve is opened or closed, it will cause a large disturbance to the medium. Especially under high pressure difference conditions, the valve will produce large vibration and noise, affecting the service life and reliability of the valve.

[0004] During use of the existing ball valve, the movement path of the fluid will deflect at a large angle according to the deflection of the ball valve, resulting in a large difference in the passage cross section of the fluid in a short period of time while the fluid passes through the ball valve. Summary of the invention

[0005] The object of the present invention is to provide a regulating ball valve with pressure reduction and noise reduction functions to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a regulating ball valve with pressure reduction and noise reduction functions, comprising a shell, an electric control mechanism is arranged above the shell, a ball and a petal are arranged inside the shell, the petal is in an arc shape, a fluid channel is opened in the middle area of ​​the ball, the petal is located in the gap between the ball and the shell, and the electric control mechanism is used to change the deflection angle of the petal relative to the ball, thereby closing one end of the fluid channel;

[0007] The vertical cross section of the fluid channel is a symmetrical triangle, and the height of the through cross section of the fluid channel on the side close to the horizontal center line of the shell is smaller than the height of the through cross section on the side away from the horizontal center line of the shell;

[0008] Before using the ball valve, it is necessary to install the ball valve. There are flanges on both sides of the shell. The ball valve is connected to the pipeline through the flanges. Then the ball valve is put into use. During the use of the ball valve, the fluid enters the ball valve from the pipeline, and then the fluid passes through the ball in the middle of the ball valve. The middle area of ​​the ball is provided with a fluid channel, and the direction of the fluid channel is the same as the direction of the pipelines on both sides of the ball valve.

[0009] A flap is provided between the outer shell and the sphere, one end of the flap is connected to an electric control mechanism, and the electric control mechanism is used to control the deflection state of the flap. During the operation of the electric control mechanism, the electric control mechanism drives the half disk to rotate with the central axis of the sphere as the center. The outer shell and the sphere are fixedly connected, and the inner wall size of the flap matches the outer wall size of the sphere. After the flap is deflected, the inner wall of the flap closes one side of the fluid channel. The flap changes the input end or output end of one side of the fluid channel, thereby limiting the flow volume through the ball valve;

[0010] The arrangement of the ball and the petal is relative to the spherical valve core with a through hole in the prior art. In the prior art, the spherical valve core is directly deflected so that a part of the through hole on the spherical valve core is closed by the inner wall of the ball valve housing, thereby changing the output of the ball valve. In the prior art, the path of the fluid changes synchronously. In the fully open state, the passage path of the fluid is a straight line. When the spherical valve core is deflected, the passage path of the fluid needs to be twisted multiple times, and the size of the fluid passage cross-section changes multiple times, so that turbulent flash cavitation and other phenomena occur, thereby generating noise;

[0011] The vertical cross-section of the fluid channel is two symmetrically arranged triangles. When the ball valve changes from a closed state to an open state, one side of the two petals fits against each other, and then the drive motor starts to control the petals to deflect about the central axis of the sphere. As the two petals fit against the wall on one side and separate from each other, the area of ​​the triangular cross-section increases, thereby achieving precise control of the passing flow.

[0012] Further, the electric control mechanism includes a drive motor, a gear set and an arc-shaped rack, the drive motor is connected to the housing, the drive motor is connected to the gear set through a coupling, the arc-shaped rack is located on both sides of the gear set, the arc-shaped rack is meshed with the gear set, and the arc-shaped rack is connected to the petal;

[0013] The upper and lower ends of the sphere are provided with connecting shafts, and the sphere is connected to the outer shell through the connecting shaft, wherein the upper connecting shaft is hollow, and a gear set and an arc-shaped rack are provided inside the connecting shaft, and the upper end of the petal penetrates the outer wall of the connecting shaft and is connected to the arc-shaped rack, the arc-shaped rack is slidably connected to the connecting shaft, and the gear set is rotatably connected to the connecting shaft, and the gear set is composed of two gears of the same size, and when the driving motor rotates, the two gears are synchronously deflected in opposite directions, and the output end of the driving motor is connected to the gear set through a coupling, and the driving motor is connected to the outer shell;

[0014] When the ball valve needs to change the fluid output, or when the ball valve is opened and closed, the output shaft of the drive motor rotates forward or reversely, and the drive motor drives the petals to deflect through the gear set and the arc-shaped rack. The deflected petals cover one end of the fluid channel, and the output of the fluid output in the ball valve is changed by changing the coverage area of ​​the petals on the fluid channel.

[0015] Furthermore, a strip plate is provided on one side of the petal, the strip plate is connected to the petal through a spring and a variable resistor, the strip plate is provided in the gap between the sphere and the shell, a plurality of through holes are provided on the strip plate, and the strip plate is connected to the arc-shaped rack;

[0016] The strip plate is arranged near the input end of the ball valve. When the ball valve is in the open state, one side of the ball and the flap is instantly filled with fluid. Since the strip plate is provided with through holes, the fluid can contact the flap through the through holes. Since the fluid carries a certain pressure, the pressure directly acts on the flap. Since the flap is connected to the strip plate through a spring;

[0017] When the pressure in the fluid acts on the flap, the fluid pushes the flap to deflect along the central axis of the sphere, forcing the flap to move toward the side where the output end of the housing is located, until the wall surfaces of the two flaps close to the output end of the housing fit together. At this time, the deflected flap completely closes the fluid channel, so that the ball valve is in a disconnected state.

[0018] The flap and the strip plate are connected by a spring, a circular hole is opened on one side of the flap, one end of the spring is inside the circular hole, the spring is received in the circular hole without external force, the spring is electrically connected to the control center, the control center changes the expansion and contraction strength of the spring by changing the current intensity passing through the spring, and the flap is deflected under the action of the fluid pressure, when the fluid pressure at the input end is too large, the flap can actively disconnect the fluid movement inside the ball valve, and change the contraction state of the spring by changing the current intensity passing through the spring, thereby changing the maximum fluid pressure passing through the ball valve;

[0019] A piezoresistance is provided at the connection between the spring and the strip plate. The piezoresistance will deform under the action of fluid pressure. At the same time, the piezoresistance is electrically connected to the control center. When the piezoresistance is deformed, pressure acts on the piezoresistance, and the resistance element inside the piezoresistance will undergo physical deformation due to mechanical stress, which in turn affects the resistivity of the resistance material. The control center determines the fluid pressure at the input end of the ball valve by judging the resistance value of the circuit where the piezoresistance is located.

[0020] Furthermore, the through cross section of the fluid channel near the input end is smaller than the through cross section of the middle of the fluid channel, and an arc groove is provided on one side of the middle of the sphere near the input end of the shell, the arc groove is separated from the fluid channel, and the fluid channel is symmetrical front and back about the center axis of the arc groove;

[0021] An electrically controlled water outlet valve is provided on one side of the lower part of the housing close to the input end, and the upper end of the electrically controlled water outlet valve is connected to the arc groove;

[0022] When the fluid passes through the ball valve, since the input end of the fluid channel is a number of tiny through holes, when the fluid carries impurities, impurities larger than the through holes will be restricted by the input end of the fluid channel, and the impurities on the input end of the fluid channel continue to increase, causing the pressure at the inlet and outlet ends of the ball valve to continue to increase;

[0023] At this time, the strip plate can be controlled to deflect through the electric control mechanism, and the strip plate slides along the outer wall of the sphere. During the movement of the strip plate, impurities on the surface of the sphere are gathered until the impurities on the surface of the sphere are pushed into the arc groove. At the same time, with the deflection of the strip plate, the strip plate drives the petals to move synchronously, and the springs between the strip plate and the petals are simultaneously fed with the maximum current intensity, so that the strip plate and the petals are completely fitted together. When the strip plate pushes the impurities into the arc groove, the petals synchronously close the input end of the fluid channel, and then the electric control water outlet valve under the shell is opened, and the fluid inside the pipeline can leave through the arc groove and the electric control water outlet valve. The fluid forms a flow inside the arc groove, and the fluid in a flowing state will drive the impurities to leave through the electric control water outlet valve, thereby realizing the self-cleaning of impurities inside the shell.

[0024] Furthermore, the sphere is composed of a guide ring and a disc, a plurality of through holes are opened on both sides of the guide ring, and the disc is located in the middle of the guide ring, and the disc divides the through hole into two upper and lower parts;

[0025] The guide ring and the disc cooperate with each other. Since the flow channel inside the sphere has been optimized, the fluid will be affected by the guide ring and the disc when passing through the sphere. The fluid is blocked by the guide ring and the disc, and the flow velocity of the fluid is reduced. The fluid is filled in the internal space of the sphere to avoid turbulent flash cavitation after the fluid leaves the sphere, thereby reducing the noise caused by the fluid passing through the ball valve and avoiding cavitation inside the ball valve and pipeline due to cavitation, which may cause damage to the ball valve and pipeline.

[0026] Furthermore, the sphere also includes a reed, which is connected to the disc through a spring shaft, and a plurality of reeds are arranged on the upper and lower sides of the disc, and the reeds are wavy;

[0027] The reed is arranged inside the sphere, and the outer wall of the reed is wavy. When the fluid passes through the inside of the sphere, the reed continuously guides the fluid, and in the process of fluid guiding, it continuously absorbs the kinetic energy in the fluid to reduce the impact of high-pressure and high-speed flowing fluid on the inner wall of the sphere and the inner wall of the pipe.

[0028] Furthermore, a plurality of cylinders are arranged on one side of the housing near the output end, the size of the cylinders increases from the side near the housing input end to the side near the housing output end, the cylinders are arranged concentrically, and the outer wall of the cylinders is provided with a plurality of through holes;

[0029] The arrangement of several cylinders and through holes on the surface of the cylinders means that after the fluid leaves the sphere, the cross-section increases instantly and the air pressure in the space where the fluid is located decreases instantly. The through holes on the surface of the cylinders further limit the flow rate of the fluid leaving the ball valve, so that the fluid is confined between the sphere and the cylinder after leaving the sphere, avoiding flash evaporation due to reduced air pressure and further reducing noise generation.

[0030] Furthermore, the side of the cylinder close to the output end of the housing is a baffle, the cylinders are connected by spring rods, and a plurality of baffles form a partition plate after overlapping;

[0031] A limiting ring is provided on one side of the housing close to the output end, and the limiting ring cooperates with the partition plate to seal the output end of the housing, and the adjacent contact surfaces of the limiting ring and the baffle plate are both inclined surfaces;

[0032] The cylinders are connected through springs and piezoelectric plates, wherein the baffle plate in the middle is circular and the baffle plate on the outside is annular. When the pressure at the output end of the ball valve is high, the fluid will impact the baffle plate until several baffle plates overlap each other and contact is made between several baffle plates and the limit ring, thereby closing the output end of the ball valve to prevent the fluid pressure output by the ball valve from being too high.

[0033] The spring rod is configured such that the spring rod is composed of a hollow round rod and an internal spring, one end of the hollow round rod is connected to the inner wall of the outer shell, the cylinder and the hollow round rod are slidingly connected, the spring inside the spring rod is electrically connected to the control center, and the control center changes the expansion and contraction strength of the spring by changing the current intensity passing through the spring. During the use of the ball valve, the current intensity passing through the spring is changed, thereby changing the contraction state of the spring and changing the maximum fluid pressure leaving the ball valve.

[0034] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0035] By setting the sphere and the petals, the fluid channel is optimized so that the fluid's passage path does not need to be deflected at a large angle, and the fluid's travel route is roughly a straight line, avoiding large differences in the fluid's passage cross-section in a short period of time. At the same time, the setting of the internal structure of the sphere slows down the movement speed of the fluid inside the sphere to avoid the fluid from entering a low-pressure environment from a high-pressure environment in a short period of time, resulting in turbulent flash cavitation and other phenomena, thereby generating noise. At the same time, with the help of the strip plate and the cylinder, the pressure is reduced at the input and output ends of the ball valve to further reduce the noise intensity generated by the fluid passing through the ball valve, thereby avoiding the short service life of the ball valve due to high-frequency vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0037] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0038] Figure 2 It is a left side structural schematic diagram of the present invention;

[0039] Figure 3 It is a schematic diagram of the main cross-sectional structure of the present invention;

[0040] Figure 4 It is a schematic diagram of the spherical fluid structure of the present invention;

[0041] Figure 5 It is a schematic diagram of the petal and sphere structure viewed from above of the present invention;

[0042] Figure 6 The present invention Figure 5 The enlarged structural diagram at A in the middle;

[0043] Figure 7 It is a schematic diagram of the spherical body of the present invention in a top view and in full cross-section;

[0044] Figure 8 It is a schematic diagram of the three-dimensional structure of the cylinder, the circular plate and the limiting ring of the present invention.

[0045] In the figure: 1. housing; 2. electric control mechanism; 201. gear set; 202. arc-shaped rack; 3. sphere; 301. arc-shaped groove; 302. guide ring; 303. disc; 304. spring; 4. petal; 401. strip plate; 5. cylinder; 501. spoiler; 502. limit ring. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] See also Figure 1-Figure 8 The present invention provides a technical solution: a regulating ball valve with pressure reduction and noise reduction functions, comprising a shell 1, an electric control mechanism 2 is arranged above the shell 1, a ball 3 and a flap 4 are arranged inside the shell 1, the flap 4 is arc-shaped, a fluid channel is opened in the middle area of ​​the ball 3, the vertical section of the fluid channel is a symmetrical triangle, the height of the through section of the fluid channel close to the horizontal center line of the shell 1 is smaller than the height of the through section away from the horizontal center line of the shell 1, and the through section of the fluid channel close to the input end is smaller than the through section of the middle of the fluid channel;

[0048] The petal 4 is located in the gap between the sphere 3 and the housing 1. An arc groove 301 is provided on one side of the middle of the sphere 3 close to the input end of the housing 1. The arc groove 301 is separated from the fluid channel. The fluid channel is symmetrical front and back about the central axis of the arc groove 301.

[0049] The sphere 3 is composed of a guide ring 302 and a disc 303. A plurality of through holes are provided on both sides of the guide ring 302. The disc 303 is located in the middle of the guide ring 302. The disc 303 divides the through hole into two parts, an upper part and an lower part.

[0050] The sphere 3 also includes a reed 304, which is connected to the disc 303 through a spring shaft. A plurality of reeds 304 are arranged on the upper and lower sides of the disc 303, and the reeds 304 are wavy in shape.

[0051] An electrically controlled water outlet valve is provided on one side of the lower part of the housing 1 near the input end, and the upper end of the electrically controlled water outlet valve is connected to the arc groove 301;

[0052] A strip plate 401 is provided on one side of the petal 4, and the strip plate 401 is connected to the petal 4 through a spring and a variable resistor. The strip plate 401 is provided in the gap between the sphere 3 and the housing 1, and a plurality of through holes are provided on the strip plate 401. The strip plate 401 is connected to the arc-shaped rack 202;

[0053] The electric control mechanism 2 includes a driving motor, a gear set 201 and an arc-shaped rack 202. The driving motor is connected to the housing 1. The driving motor is connected to the gear set 201 through a coupling. The arc-shaped rack 202 is located on both sides of the gear set 201. The arc-shaped rack 202 is meshed with the gear set 201. The arc-shaped rack 202 is connected to the petal 4. The electric control mechanism 2 is used to change the deflection angle of the petal 4 relative to the sphere 3, thereby closing one end of the fluid channel.

[0054] A plurality of cylinders 5 are arranged on one side of the housing 1 close to the output end. The size of the cylinders 5 increases from the side close to the input end of the housing 1 to the side close to the output end of the housing 1. The cylinders 5 are arranged concentrically. The outer wall of the cylinders 5 is provided with a plurality of through holes.

[0055] The side of the cylinder 5 close to the output end of the housing 1 is a baffle 501, and the cylinders 5 are connected by spring rods. A plurality of baffles 501 form a partition plate after being overlapped.

[0056] A limit ring 502 is provided on one side of the housing 1 close to the output end. The limit ring 502 cooperates with the partition plate to seal the output end of the housing 1. The adjacent contact surfaces of the limit ring 502 and the baffle plate 501 are both inclined surfaces.

[0057] The arrangement of the sphere 3 and the petals 4 optimizes the fluid passage so that the passage path of the fluid does not need to be deflected at a large angle, and the fluid travels in a roughly straight line, thereby avoiding large differences in the passage cross-section of the fluid in a short period of time. At the same time, the arrangement of the internal structure of the sphere 3 slows down the movement speed of the fluid inside the sphere 3, thereby avoiding the fluid from entering a low-pressure environment from a high-pressure environment in a short period of time, resulting in turbulent flash cavitation and the like, thereby generating noise. At the same time, in conjunction with the strip plate 401 and the cylinder 5, a pressure reduction treatment is performed at the input and output ends of the ball valve, thereby further reducing the noise intensity generated when the fluid passes through the ball valve, thereby avoiding a short service life of the ball valve due to high-frequency vibration.

[0058] Working principle of the present invention:

[0059] Before the ball valve is used, it needs to be installed. There are flanges on both sides of the housing 1. The ball valve is connected to the pipeline through the flanges. Then the ball valve is put into use. During the use of the ball valve, the fluid enters the ball valve from the pipeline, and then the fluid passes through the ball body 3 in the middle of the ball valve. The middle area of ​​the ball body 3 is provided with a fluid channel, and the direction of the fluid channel is the same as the direction of the pipelines on both sides of the ball valve;

[0060] A flap 4 is provided between the housing 1 and the sphere 3, one end of the flap 4 is connected to the electric control mechanism 2, and the electric control mechanism 2 is used to control the deflection state of the flap 4. During the operation of the electric control mechanism 2, the electric control mechanism 2 drives the half disk 2 to rotate with the central axis of the sphere 3 as the center. The housing 1 and the sphere 3 are fixedly connected, and the inner wall size of the flap 4 matches the outer wall size of the sphere 3. After the flap 4 is deflected, the inner wall of the flap 4 closes one side of the fluid channel. The flap 4 changes the input end or the output end of one side of the fluid channel, thereby limiting the flow volume through the ball valve;

[0061] The arrangement of the ball 3 and the petal 4 is relative to the spherical valve core with a through hole in the prior art. In the prior art, the spherical valve core is directly deflected so that a part of the through hole on the spherical valve core is closed by the inner wall of the ball valve housing, thereby changing the output of the ball valve. In the prior art, the path of the fluid changes synchronously. In the fully open state, the passage path of the fluid is a straight line. When the spherical valve core is deflected, the passage path of the fluid needs to be twisted multiple times, and the size of the fluid passage cross-section changes multiple times, so that turbulent flash cavitation and other phenomena occur, thereby generating noise;

[0062] The vertical cross section of the fluid channel is two symmetrically arranged triangles. When the ball valve changes from a closed state to an open state, one side of the two flaps 4 fits against each other, and then the drive motor starts to control the flaps 4 to deflect about the central axis of the sphere 3. As the two flaps 4 fit against one side of the wall and separate from each other, the area of ​​the triangular cross section increases, thereby achieving precise control of the flow rate.

[0063] The upper and lower ends of the sphere 3 are provided with connecting shafts, and the sphere 3 is connected to the housing 1 through the connecting shafts, wherein the connecting shaft located at the top is hollow, and a gear set 201 and an arc-shaped rack 202 are provided inside the connecting shaft, and the upper end of the petal 4 passes through the outer wall of the connecting shaft and is connected to the arc-shaped rack 202, and the arc-shaped rack 202 is slidably connected to the connecting shaft, and the gear set 201 is rotationally connected to the connecting shaft, and the gear set 201 is composed of two gears of the same size. When the driving motor rotates, the two gears are synchronously deflected in opposite directions, and the output end of the driving motor is connected to the gear set 201 through a coupling, and the driving motor is connected to the housing 1;

[0064] When the ball valve needs to change the fluid output, or when the ball valve is opened or closed, the output shaft of the driving motor rotates forward or reversely, and the driving motor drives the petal 4 to deflect through the gear set 201 and the arc-shaped rack 202. The deflected petal 4 covers one end of the fluid channel, and the output of the fluid output in the ball valve is changed by changing the coverage area of ​​the petal 4 on the fluid channel;

[0065] The strip plate 401 is arranged on the flap 4 near the ball valve input end. When the ball valve is in the open state, one side of the ball 3 and the flap 4 is instantly filled with fluid. Since the strip plate 401 is provided with a through hole, the fluid can contact the flap 4 through the through hole. Since the fluid carries a certain pressure, the pressure directly acts on the flap 4. Since the flap 4 is connected to the strip plate 401 through a spring;

[0066] When the pressure in the fluid acts on the flap 4, the fluid pushes the flap 4 to deflect along the central axis of the sphere 3, forcing the flap 4 to move toward the side where the output end of the housing 1 is located, until the side walls of the two flaps 4 close to the output end of the housing 1 fit together. At this time, the deflected flap 4 completely closes the fluid channel, so that the ball valve is in a disconnected state.

[0067] The flap 4 and the strip plate 401 are connected by a spring. A circular hole is provided on one side of the flap 4. One end of the spring is inside the circular hole. In the absence of external force, the spring is received in the circular hole. The spring is electrically connected to the control center. The control center changes the expansion and contraction strength of the spring by changing the current intensity passing through the spring. Secondly, the flap 4 is deflected under the action of the fluid pressure. When the fluid pressure at the input end is too large, the flap 4 can actively disconnect the fluid movement inside the ball valve, and change the contraction state of the spring by changing the current intensity passing through the spring, thereby changing the maximum fluid pressure passing through the ball valve.

[0068] A piezoresistance is provided at the connection between the spring and the strip plate 401. The piezoresistance will be deformed under the action of fluid pressure. At the same time, the piezoresistance is electrically connected to the control center. When the piezoresistance is deformed, the pressure acts on the piezoresistance, and the resistance element inside the piezoresistance will be physically deformed due to mechanical stress, which in turn affects the resistivity of the resistance material. The control center determines the resistance value of the circuit where the piezoresistance is located, and then determines the fluid pressure at the input end of the ball valve.

[0069] When the fluid passes through the ball valve, since the input end of the fluid channel is a number of tiny through holes, when the fluid carries impurities, impurities larger than the through holes will be restricted by the input end of the fluid channel, and the impurities on the input end of the fluid channel continue to increase, causing the pressure at the inlet and outlet ends of the ball valve to continue to increase;

[0070] At this time, the strip plate 401 can be controlled to deflect by the electric control mechanism, and the strip plate 401 slides along the outer wall of the sphere 3. During the movement of the strip plate 401, impurities on the surface of the sphere 3 are gathered until the impurities on the surface of the sphere 3 are pushed into the arc groove 301. At the same time, with the deflection of the strip plate 401, the strip plate 401 drives the petal 4 to move synchronously, and the spring between the strip plate 401 and the petal 4 is simultaneously supplied with the maximum current intensity, so that the strip plate 401 and the petal 4 are completely fitted. When the strip plate 401 pushes the impurities into the arc groove 301, the petal 4 synchronously closes the input end of the fluid channel, and then the electric control water outlet valve under the shell 1 is opened, and the fluid inside the pipeline can leave through the arc groove 301 and the electric control water outlet valve. The fluid forms a flow inside the arc groove 301, and the fluid in a flowing state drives the impurities to leave through the electric control water outlet valve, thereby realizing the self-cleaning of impurities inside the shell 1.

[0071] The guide ring 302 and the disc 303 cooperate with each other. Since the flow channel inside the sphere 3 is optimized, when the fluid passes through the sphere 3, the fluid will be affected by the guide ring 302 and the disc 303. Under the obstruction of the guide ring 302 and the disc 303, the fluid is filled in the internal space of the sphere 3 by reducing the flow rate of the fluid, thereby avoiding the occurrence of turbulent flash cavitation after the fluid leaves the sphere 3, thereby reducing the noise caused by the fluid passing through the ball valve, and at the same time avoiding cavitation caused by cavitation inside the ball valve and the pipeline, thereby causing damage to the ball valve and the pipeline;

[0072] The reed 304 is arranged inside the sphere 3, and the outer wall of the reed 304 is wavy. When the fluid passes through the sphere 3, the reed 304 continuously guides the fluid, and in the process of guiding the fluid, the kinetic energy in the fluid is continuously absorbed to reduce the impact of the high-pressure and high-speed flowing fluid on the inner wall of the sphere 3 and the inner wall of the pipeline;

[0073] The arrangement of several cylinders 5 and the through holes on the surface of the cylinder 5, after the fluid leaves the sphere 3, the pressure in the space where the fluid is located is instantly reduced due to the instantaneous increase in the cross section. The through holes on the surface of the cylinder 5 further limit the flow rate of the fluid leaving the ball valve, so that the fluid is confined between the sphere 3 and the cylinder 5 after leaving the sphere 3, avoiding flash evaporation due to reduced pressure, and further reducing the generation of noise;

[0074] The cylinders 5 are connected through springs and piezoelectric plates, wherein the middle baffle plate 501 is circular, and the outer baffle plate 501 is annular. When the pressure at the output end of the ball valve is relatively high, the fluid will impact the baffle plate 501 until several baffle plates 501 overlap each other, and at the same time, several baffle plates 501 come into contact with the limit ring 502, thereby closing the output end of the ball valve to prevent the fluid pressure output by the ball valve from being too high.

[0075] The spring rod is configured such that the spring rod is composed of a hollow round rod and an internal spring. One end of the hollow round rod is connected to the inner wall of the outer shell 1. The cylinder 5 and the hollow round rod are slidably connected. The spring inside the spring rod is electrically connected to the control center. The control center changes the expansion and contraction strength of the spring by changing the current intensity passing through the spring. During the use of the ball valve, the current intensity passing through the spring is changed to change the contraction state of the spring, thereby changing the maximum fluid pressure leaving the ball valve.

[0076] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0077] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A regulating ball valve with pressure reduction and noise reduction functions, comprising a housing (1), characterized in that: An electric control mechanism (2) is arranged above the shell (1), a sphere (3) and a petal (4) are arranged inside the shell (1), the petal (4) is arc-shaped, a fluid channel is opened in the middle area of ​​the sphere (3), the petal (4) is located in the gap between the sphere (3) and the shell (1), and the electric control mechanism (2) is used to change the deflection angle of the petal (4) relative to the sphere (3), thereby closing one end of the fluid channel; The vertical cross section of the fluid channel is a symmetrical triangle, and the height of the through section of the fluid channel on the side close to the horizontal center line of the housing (1) is smaller than the height of the through section on the side away from the horizontal center line of the housing (1); The electric control mechanism (2) comprises a drive motor, a gear set (201) and an arc-shaped rack (202); the drive motor is connected to the housing (1); the drive motor is connected to the gear set (201) via a coupling; the arc-shaped rack (202) is located on both sides of the gear set (201); the arc-shaped rack (202) is meshedly connected to the gear set (201); and the arc-shaped rack (202) is connected to the petal (4); A strip plate (401) is provided on one side of the petal (4); the strip plate (401) is connected to the petal (4) via a spring and a variable resistor; the strip plate (401) is arranged in the gap between the sphere (3) and the housing (1); a plurality of through holes are provided on the strip plate (401); and the strip plate (401) is connected to the arc-shaped rack (202); The through cross section of the fluid channel close to the input end is smaller than the through cross section of the middle of the fluid channel, an arc groove (301) is provided on one side of the middle of the sphere (3) close to the input end of the housing (1), the arc groove (301) is separated from the fluid channel, and the fluid channel is symmetrical front and back about the central axis of the arc groove (301); An electrically controlled water outlet valve is provided on a side of the lower portion of the housing (1) close to the input end, and the upper end of the electrically controlled water outlet valve is connected to the arc-shaped groove (301); The upper and lower ends of the sphere (3) are provided with connecting shafts, and the sphere (3) is connected to the housing (1) via the connecting shafts, wherein the connecting shaft located at the top is hollow, and a gear set (201) and an arc-shaped rack (202) are provided inside the connecting shaft, and the upper end of the petal (4) penetrates the outer wall of the connecting shaft and is connected to the arc-shaped rack (202), the arc-shaped rack (202) and the connecting shaft are slidably connected, and the gear set (201) and the connecting shaft are rotationally connected, and the gear set (201) is composed of two gears of the same size, and when the drive motor rotates, the two gears are synchronously deflected in opposite directions, and the output end of the drive motor is connected to the gear set (201) via a coupling, and the drive motor is connected to the housing (1).

2. The regulating ball valve with pressure reduction and noise reduction function according to claim 1 is characterized in that: The sphere (3) is composed of a guide ring (302) and a disc (303). A plurality of through holes are provided on both sides of the guide ring (302). The disc (303) is located in the middle of the guide ring (302). The disc (303) divides the through hole into two upper and lower parts.

3. The regulating ball valve with pressure reduction and noise reduction function according to claim 2 is characterized in that: The sphere (3) also includes a reed (304), which is connected to the disc (303) via a spring shaft. A plurality of reeds (304) are arranged on the upper and lower sides of the disc (303), and the reeds (304) are wavy in shape.

4. The regulating ball valve with pressure reduction and noise reduction function according to claim 1 or 3, characterized in that: A plurality of cylinders (5) are arranged on a side close to the output end in the housing (1), the size of the cylinders (5) increasing from the side close to the input end of the housing (1) to the side close to the output end of the housing (1), the cylinders (5) are arranged concentrically, and the outer walls of the cylinders (5) are provided with a plurality of through holes.

5. The regulating ball valve with pressure reduction and noise reduction function according to claim 4 is characterized in that: A baffle plate (501) is provided on one side of the cylinder (5) close to the output end of the housing (1); the cylinders (5) are connected to each other via spring rods; and a plurality of baffle plates (501) form a partition plate when overlapped; A limit ring (502) is provided on one side of the housing (1) close to the output end, and the limit ring (502) cooperates with the partition plate to seal the output end of the housing (1), and adjacent contact surfaces of the limit ring (502) and the baffle plate (501) are both inclined surfaces.

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