Low torque ball valve

Abstract

The application relates to the technical field of ball valves, and discloses a low-torque ball valve which comprises a ball valve, the upper side of the ball valve is provided with a control assembly, the inner side of the ball valve is provided with a valve core assembly, the inside of the ball valve is sealingly provided with valve body bases on the two sides close to the valve core assembly, the lower side of the ball valve is provided with a blowdown assembly, the control assembly comprises a flange joint fixedly installed, an L-shaped guide opening is formed in the flange joint, a control box is fixedly arranged at the upper end of the flange joint, a driving gear is rotatably arranged in the inner side of one side of the control box, and a control rod is movably arranged in the inner sides of the ball valve, the flange joint and the control box. The low-torque ball valve can avoid the frictional rotation of a valve clack and a valve body base, reduce the frictional force and the resistance and abrasion caused by the frictional force, prolong the service life of the ball valve, and can adopt different driving modes.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ball valves, in particular to a low-torque ball valve. BACKGROUND

[0002] As a key component in the field of fluid control, ball valves are widely used in industrial systems such as petroleum, chemical industry, natural gas, etc. They achieve the opening and closing and regulation of fluid by rotating the ball. However, the traditional ball valve has a large opening and closing torque during operation, especially under high pressure, high temperature or large size working conditions. The main reason is that the friction resistance between the ball and the valve seat sealing surface increases sharply with the increase of medium pressure; at the same time, in order to ensure the sealing performance, the pre-tightening type valve seat design will further increase the pressure of the contact surface, resulting in the increase of friction torque. In addition, factors such as material expansion difference caused by temperature change and medium crystallization will also increase the friction resistance, making manual operation difficult, increasing the energy consumption of electric actuators, and even accelerating the wear of sealing elements, affecting the service life and reliability of the valve. SUMMARY

[0003] The main purpose of the present application is to provide a low-torque ball valve, which can effectively solve the problems in the background art.

[0004] To achieve the above purpose, the technical scheme adopted by the present application is:

[0005] A low-torque ball valve, comprising a ball valve, a control assembly is arranged on the upper side of the ball valve, a valve core assembly is arranged on the inner side of the ball valve, valve body bases are sealingly arranged on both sides of the valve core assembly inside the ball valve, a blowdown assembly is arranged on the lower side of the ball valve, the control assembly comprises a flange joint fixedly installed, an L-shaped guide hole is formed in the flange joint, a control box is fixedly arranged on the upper end of the flange joint, a drive gear is rotatably arranged inside one side of the control box, a control rod is movably arranged inside the ball valve, the flange joint and the control box, a handle is threadedly connected to the position corresponding to the L-shaped guide hole on one side of the control rod, a transmission gear one is fixedly arranged on the inner side of the control box close to the position of the control rod, a rotating rod is rotatably arranged on both sides of the control box close to the control rod, a pressing block is fixedly arranged on the outer side of each of the two groups of rotating rods, a transmission gear two is fixedly arranged on the outer side of each of the two groups of rotating rods close to the rear side of the pressing block, two groups of transmission shafts are rotatably arranged on the rear side of the control box, a transmission gear three is fixedly arranged on the outer side of each of the two groups of transmission shafts close to the inner side of the control box, a hand wheel is threadedly connected to the upper side of the control rod, a flange seat is fixedly arranged on the upper end and the rear side of the control box, and a drive motor is installed on each of the two groups of flange seats.

[0006] Preferably, the valve core assembly includes a control block fixedly disposed at the lower end of the control rod. The front and rear ends of the control block are respectively fixedly disposed with fixed shafts. Two sets of connecting parts are rotatably disposed on the outer side of the two sets of fixed shafts. A ball ring is sleeved on the outer side of the control block. Valve discs are fixedly disposed on both sides. A slot is opened on the upper side of the two sets of valve discs corresponding to the position of the connecting part on the front side. Several sets of balance holes are opened on the upper side of the ball ring and the two sets of valve discs.

[0007] Preferably, the sewage discharge assembly includes a connecting seat fixedly disposed on the lower side of the ball valve, a connecting pipe fixedly installed at the lower end of the connecting seat, a bottom pipe seat fixedly disposed on the connecting seat and the connecting pipe, a plurality of water outlets being opened on the upper side of the bottom pipe seat near the inner side of the ball valve, a sealing plug being movably disposed on the inner side of the bottom pipe seat, a spring being fixedly disposed between the sealing plug and the upper inner wall of the bottom pipe seat, a pull rod being fixedly disposed on the upper end of the sealing plug, and a pull block being fixedly disposed on the upper end of the pull rod.

[0008] Preferably, the control box consists of a cover plate and a box body, the drive gear and the transmission gear are meshed, the drive gear rotating shaft and a set of transmission shafts are respectively inserted into the inner sides of two sets of flange seats, and the control rod passes through the ball valve, the flange joint and the upper side of the control box.

[0009] Preferably, the handle passes through the L-shaped guide opening, the pressure block presses on the upper end of the first transmission gear, the two sets of second transmission gears are respectively meshed with a third transmission gear, the two sets of third transmission gears are meshed with each other, the movable sleeve on the lower side of the handwheel is fixedly installed on the upper end of the control box by bolts, and the two sets of drive motor rotating shafts are respectively engaged with the drive gear rotating shaft and a set of transmission shafts.

[0010] Preferably, the control block is positioned between the upper notch of the ball ring and the two sets of valve discs, and the contact surfaces of the control block with the ball ring and valve discs are inclined.

[0011] Preferably, the two sets of connecting parts on the fixed shaft are respectively inserted into the slots on the upper side of the two sets of valve discs, the ball ring is made of elastic metal material, the ball ring is in a compressed state, and the two sets of valve discs are sealed and fitted to the two sets of valve body bases.

[0012] Preferably, the sealing plug is fitted to the inner side of the bottom pipe seat at the position corresponding to the water outlet, and the pull rod passes through the inside of the ball ring, the control block, and the control rod.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1、Through rotating the hand wheel to control the control rod connected by screw to drive the control block to move up and down, thereby realizing the control of the valve core assembly, and through holding the handle to rotate by 90 degrees along the L-shaped guide opening, the control rod can be driven to rotate, realizing the rotation of the valve core assembly, completing the closing and opening work of the ball valve, in addition, when using the electric control mode, the handle connected by screw with the hand wheel is disassembled, and then two groups of driving motors are installed, so that the rotating shaft of the driving motor is clamped together with the butt joint driving gear and the transmission shaft, and the above work can be realized by the control of the driving motor, realizing the manual and electric two different controls, and different driving modes can be used according to the use.

[0015] 2、When the control block is moved upward by driving the control rod, the vertical deformation of the ball ring occurs, the handle drives the control rod to drive the valve core assembly to rotate by 90 degrees, and then the hand wheel is rotated to move the control rod downward, so that the control block is pressed into the two groups of valve petals to support the ball ring and the two groups of valve petals, and the ball ring is attached to the two groups of valve body bases, realizing the closing purpose, and the ball valve can be opened by reversing and repeating the above, and the deformation of the control ball ring avoids the friction between the two groups of valve petals and the two groups of valve body bases, effectively reducing the resistance caused by the friction and the wear caused by the friction, reducing the subsequent sealing performance, and prolonging the service life of the ball valve.

[0016] 3、By opening the balance hole, the inside of the ball ring and the ball valve cavity are communicated, the pressure difference between the two sides is reduced, and the torque required for opening or closing the valve is also reduced.

[0017] 4、When the control valve core assembly closes the ball valve, part of the medium is retained in the inside of the ball valve, the blocking of the water outlet is removed by pulling the pull block, the pull rod and the sealing plug upward, and the medium is discharged outward through the bottom pipe base and the connecting pipe, so that the influence of the residual medium on the next transportation is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the low-torque ball valve of the application;

[0019] Figure 2 It is a schematic diagram of the internal structure of the low-torque ball valve of the application;

[0020] Figure 3 It is a schematic diagram of the electric ball valve structure of the low-torque ball valve of the application;

[0021] Figure 4 It is a schematic diagram of the control assembly structure of the low-torque ball valve of the application;

[0022] Figure 5 It is a schematic diagram of the internal structure of the control assembly of the low-torque ball valve of the application;

[0023] Figure 6 It is a schematic diagram of the Figure 5Enlarged structural schematic view of middle A part;

[0024] Figure 7 Partial structural schematic view of control assembly of low torque ball valve of the present application

[0025] Figure 8 Partial structural schematic view of control assembly of low torque ball valve of the present application;

[0026] Figure 9 Structural schematic view of valve core assembly of low torque ball valve of the present application;

[0027] Figure 10 Low torque ball valve of the present application Figure 9 Enlarged structural schematic view of middle B part;

[0028] Figure 11 Partial expanded structural schematic view of valve core assembly of low torque ball valve of the present application;

[0029] Figure 12 Structural schematic view of blowdown assembly of low torque ball valve of the present application.

[0030] In the figure: 1, ball valve; 2, control assembly; 21, flange joint; 22, L-shaped guide port; 23, control box; 24, driving gear; 25, control rod; 26, handle; 27, transmission gear one; 28, rotating rod; 29, pressing block; 210, transmission gear two; 211, transmission shaft; 212, transmission gear three; 213, hand wheel; 214, flange seat; 215, driving motor; 3, valve core assembly; 31, control block; 32, fixed shaft; 33, connecting piece; 34, ball ring; 35, valve flap; 36, notch; 37, balance hole; 4, valve body base; 5, blowdown assembly; 51, connecting seat; 52, connecting pipe; 53, bottom pipe seat; 54, water outlet; 55, sealing plug; 56, spring; 57, pull rod; 58, pull block. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described in combination with the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application.

[0032] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the relative positional relationship of the orientation or position, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application.

[0033] Please refer toFigures 1-12 The application provides a low-torque ball valve, which comprises a ball valve 1, a control assembly 2 arranged on the upper side of the ball valve 1, a valve core assembly 3 arranged on the inner side of the ball valve 1, valve body bases 4 arranged on both sides of the ball valve 1 close to the valve core assembly 3, and a blowdown assembly 5 arranged on the lower side of the ball valve 1, wherein the control assembly 2 comprises a flange joint 21 fixedly arranged, an L-shaped guide hole 22 formed in the flange joint 21, a control box 23 fixedly arranged on the upper end of the flange joint 21, a drive gear 24 rotatably arranged on one side of the control box 23, a control rod 25 movably arranged in the ball valve 1, the flange joint 21 and the control box 23, a handle 26 threadedly connected to the control rod 25 at a position corresponding to the L-shaped guide hole 22, a transmission gear one 27 fixedly arranged on the outer side of the control rod 25 close to the inner side of the control box 23, a rotating rod 28 rotatably arranged on the inner side of the control box 23 close to both sides of the control rod 25, a pressing block 29 fixedly arranged on the outer side of each of the two rotating rods 28 close to the rear side of the pressing block 29, a transmission gear two 210 fixedly arranged on the outer side of each of the two rotating rods 28 close to the rear side of the pressing block 29, two sets of transmission shafts 211 rotatably arranged on the rear side of the control box 23, a transmission gear three 212 fixedly arranged on the outer side of each of the two sets of transmission shafts 211 close to the inner side of the control box 23, a hand wheel 213 threadedly connected to the upper side of the control rod 25, and two sets of flange seats 214 fixedly arranged on the upper end and the rear side of the control box 23, wherein each of the two sets of flange seats 214 is provided with an electrically controlled drive motor 215.

[0034] The control box 23 is composed of a cover plate and a box body, the drive gear 24 and the transmission gear one 27 are in meshing arrangement, the rotating shafts of the drive gear 24 and one set of the transmission shafts 211 are respectively inserted into the inner sides of the two sets of flange seats 214, the control rod 25 passes through the upper sides of the ball valve 1, the flange joint 21 and the control box 23, the handle 26 passes through the inner part of the L-shaped guide hole 22, the pressing block 29 is pressed on the upper end of the transmission gear one 27, the two sets of transmission gear two 210 are respectively in meshing arrangement close to one set of the transmission gear three 212, the two sets of transmission gear three 212 are in meshing arrangement with each other, the lower side of the hand wheel 213 is movably sleeved and fixedly arranged on the upper end of the control box 23 by means of bolts, and the rotating shafts of the two sets of drive motors 215 are respectively in clamping arrangement with the rotating shafts of the drive gear 24 and one set of the transmission shafts 211.

[0035] The control lever 25 is controlled by rotating the hand wheel 213 to drive the control block 31 to move up and down, thereby controlling the valve core assembly 3. By holding the handle 26 and rotating it by 90 degrees along the L-shaped guide opening 22, the control lever 25 can be rotated to rotate the valve core assembly 3, thereby completing the closing and opening of the ball valve 1. In addition, by removing the hand wheel 213 and the threaded handle 26, and then installing two sets of drive motors 215 on the upper end of the flange seat 214, the rotating shaft of the drive motor 215 is engaged with the butt joint drive gear 24 and the transmission shaft 211. The upper drive motor 215 drives the drive gear 24 to rotate, and the control lever 25 can be rotated by 90 degrees, thereby completing the closing or opening of the valve core assembly 3 in the ball valve 1. The rear drive motor 215 drives the transmission shaft 211 and a set of transmission gears three 212 to rotate, and the two sets of meshing transmission gears three 212 simultaneously drive the two sets of meshing transmission gears two 210, the rotating lever 28 and the pressing block 29 to rotate synchronously. The two sets of pressing blocks 29 push the transmission gear one 27 and the control lever 25 downward to move the control lever 25 and the control block 31, thereby completing the deformation of the valve core assembly 3. When rotating upward, the pull block 58 is pulled to drive the blowdown assembly 5, thereby realizing manual and electric control.

[0036] The valve core assembly 3 includes a control block 31 fixedly arranged at the lower end of the control lever 25. The control block 31 is fixedly arranged with a fixed shaft 32 at the front and rear ends, respectively. Two sets of connecting pieces 33 are rotatably arranged outside the two fixed shafts 32. A ball ring 34 is sleeved outside the control block 31, and valve flaps 35 are fixedly arranged on both sides. Grooves 36 are arranged on the upper sides of the two valve flaps 35 corresponding to the positions of the front side connecting pieces 33. A plurality of balance holes 37 are arranged on the upper sides of the ball ring 34 and the two valve flaps 35.

[0037] The control block 31 is arranged between the upper side gap of the ball ring 34 and the two valve flaps 35. The contact surfaces of the control block 31, the ball ring 34 and the valve flaps 35 are arranged obliquely. The two sets of connecting pieces 33 arranged on the fixed shaft 32 are inserted into the groove 36 arranged on the upper side of the two valve flaps 35. The ball ring 34 is made of elastic metal material and is in an extruded state. The two valve flaps 35 are sealingly arranged with the two valve body bases 4.

[0038] When the control block 31 is moved upward by pulling the driving control rod 25, the control block 31 of the inclined structure pulls the two groups of valve petals 35 and the ball ring 34 through the front and rear connecting pieces 33, respectively. Since the bottom of the ball ring 34 is connected with the bottom pipe seat 53, pulling the ball ring 34 causes vertical deformation. The handle 26 drives the control rod 25 to rotate the valve core assembly 3 by 90 degrees, and then rotates the hand wheel 213 to move the control rod 25 downward to press the control block 31 into the two groups of valve petals 35 to separate the ball ring 34 and the two groups of valve petals 35, and then the two groups of valve body bases 4 are attached to achieve the purpose of closing. When opening, the control block 31 is moved to control the deformation of the ball ring 34, so that the two groups of valve petals 35 are separated from the two groups of valve body bases 4, and then the two groups of valve petals 35 are rotated to separate the two groups of valve body bases 4. The two sides of the deformed ball ring 34 correspond to the two groups of valve body bases 4 to complete the flow of the medium. When operating, the deformation of the ball ring 34 prevents the two groups of valve petals 35 from rubbing with the two groups of valve body bases 4, effectively reducing the friction force and the wear caused by friction, thereby reducing the subsequent sealing performance and prolonging the service life of the ball valve 1. In addition, by opening a plurality of balance holes 37, the inside of the ball ring 34 is communicated with the pressure in the ball valve 1, thereby reducing the pressure difference on both sides and reducing the torque required for opening or closing the valve.

[0039] The blowdown assembly 5 includes a connecting seat 51 fixedly arranged on the lower side of the ball valve 1, a connecting pipe 52 fixedly installed at the lower end of the connecting seat 51, and a bottom pipe seat 53 fixedly arranged with the connecting seat 51 and the connecting pipe 52. A plurality of water outlets 54 are arranged on the upper side of the bottom pipe seat 53 near the inner side of the ball valve 1. A sealing plug 55 is movably arranged in the inner side of the bottom pipe seat 53. A spring 56 is fixedly arranged between the sealing plug 55 and the inner wall on the upper side of the bottom pipe seat 53. A pull rod 57 is fixedly arranged at the upper end of the sealing plug 55. A pull block 58 is fixedly arranged at the upper end of the pull rod 57.

[0040] The sealing plug 55 is sealed and attached to the position corresponding to the water outlet 54 in the inner side of the bottom pipe seat 53. The pull rod 57 passes through the inside of the ball ring 34, the control block 31, and the control rod 25.

[0041] When the control valve core assembly 3 closes the ball valve 1, part of the medium remains in the inside of the ball valve 1. Therefore, when opening next time, it is necessary to consider whether the two kinds of medium can be mixed. If not, the sealing plug 55 can be removed from the shielding of the water outlet 54 by pulling the pull block 58 and the pull rod 57 upward to move, so that the bottom pipe seat 53 and the connecting pipe 52 are discharged outward to reduce the influence of the remaining medium on the next transportation.

[0042] Working principle: first connecting pipe 52 and the collection of wastewater pipes connected, in use, by rotating hand wheel 213 control screw control rod 25 drive control block 31 to move up and down, thus achieving the control of valve core assembly 3, and by holding the handle 26 along the L type guide port 22 rotation 90 degrees, can drive control rod 25 rotation, realize the rotation of valve core assembly 3, complete the ball valve 1 closing and opening work, in addition, by removing the hand wheel 213 and screw handle 26, and then install two sets of drive motor 215 to two sets of flange seat 214 upper end, make drive motor 215 rotation shaft and butt joint drive gear 24, transmission shaft 211 together, and the upper drive motor 215 by driving gear 24 rotation, drive transmission gear one 27, control rod 25 can realize 90 degrees rotation, complete the valve core assembly 3 to the ball valve 1 in the closing or opening work, cooperate with the rear drive motor 215 drive butt joint transmission shaft 211 and a set of transmission gear three 212 rotation, and two sets of meshing transmission gear three 212 will drive the meshing of two sets of transmission gear two 210, rotating rod 28, block 29 synchronous rotation, by two sets of block 29 transmission gear one 27, control rod 25 down, realize the control of control block 31 movement, complete the deformation of valve core assembly 3, and rotate upward, can pull the pull block 58, complete the drive work of the pollution control assembly 5, the whole realization of manual and electric two different control, can be used according to different driving mode; when the drive control rod 25 upward pull control block 31 movement, the control block 31 of inclined structure by front and back side connecting piece 33 respectively pull two sets of valve 35 and ball ring 34, because the bottom of the ball ring 34 and the bottom pipe seat 53 connection, so pull the ball ring 34 perpendicular state deformation, by handle 26 drive control rod 25 drive valve core assembly 3 rotation 90 degrees, and then rotate the hand wheel 213 make control rod 25 move down, extrude control block 31 into two sets of valve 35 between the ball ring 34, two sets of valve 35 prop open, adhere to two sets of valve body base 4, realize the purpose of closing, when opening, the same reason drive control block 31 movement, control ball ring 34 deformation, make two sets of valve 35 and two sets of valve body base 4 after the adhesion, and then rotate work prop open two sets of valve 35, deformation of the ball ring 34 both sides corresponding to two sets of valve body base 4, complete the medium flow work, and in the operation, control ball ring 34 deformation makes two sets of valve 35 avoid with two sets of valve body base 4 friction rotation, effectively reduce the resistance of friction and wear caused by friction, resulting in subsequent sealing performance reduction, prolong the service life of ball valve 1, in addition, by opening several balance hole 37, can make ball ring 34 inside and ball valve 1 cavity pressure communication, reduce both sides of the pressure difference, also can reduce the torque required for opening or closing valve;Finally in the control valve core assembly 3 closes ball valve 1, there will be part of the medium remains in the ball valve 1 inside, so next time to open, need to consider two medium can be mixed, if not, can be pulled up by pulling block 58, pull rod 57 movement, so that the sealing plug 55 remove the shielding of the water outlet 54, by the bottom pipe seat 53, connecting pipe 52 to the outside, reduce the impact of the remaining medium to the next delivery.

[0043] The electrical components in the present application are the existing structures in the art, and the use and connection modes are the common knowledge in the art, the working principles are the known technologies, and the models are selected according to the actual use, so the detailed explanation is not given.

[0044] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made thereto without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A low-torque ball valve, comprising a ball valve (1), characterized in that: A control assembly (2) is provided on the upper side of the ball valve (1), a valve core assembly (3) is provided on the inner side of the ball valve (1), and a valve body base (4) is sealed on both sides of the ball valve (1) near the valve core assembly (3). A drain assembly (5) is provided on the lower side of the ball valve (1). The control assembly (2) includes a flange joint (21) fixedly installed. An L-shaped guide port (22) is provided on the flange joint (21). A control box (23) is fixedly installed on the upper end of the flange joint (21). A drive gear (24) is rotatably installed inside one side of the control box (23). A control rod (25) is movably installed inside the ball valve (1), the flange joint (21), and the control box (23). A handle (26) is threadedly connected to one side of the control rod (25) at the position corresponding to the L-shaped guide port (22). The outer side of the control rod (25) is close to the... A transmission gear 1 (27) is fixedly installed inside the control box (23). Rotating rods (28) are rotatably installed on both sides of the control box (23) near the control rod (25). Pressure blocks (29) are fixedly installed on the outer sides of the two sets of rotating rods (28). Transmission gear 2 (210) is fixedly installed on the outer sides of the two sets of rotating rods (28) near the rear side of the pressure blocks (29). Two sets of transmission shafts (211) are rotatably installed on the rear side of the control box (23). Transmission gear 3 (212) is fixedly installed on the outer sides of the two sets of transmission shafts (211) near the inside of the control box (23). A handwheel (213) is threadedly connected to the upper side of the control rod (25). Flange seats (214) are fixedly installed on the upper end and rear side of the control box (23). Electric drive motors (215) are installed on both sets of flange seats (214). The valve core assembly (3) includes a control block (31) fixedly installed at the lower end of the control rod (25). The front and rear ends of the control block (31) are respectively fixedly installed with fixed shafts (32). Two sets of connecting parts (33) are rotatably installed on the outer side of the two sets of fixed shafts (32). A ball ring (34) is sleeved on the outer side of the control block (31). Valve discs (35) are fixedly installed on both sides. A slot (36) is opened on the upper side of the two sets of valve discs (35) corresponding to the position of the connecting part (33) on the front side. Several sets of balance holes (37) are opened on the upper side of the ball ring (34) and the two sets of valve discs (35). The ball ring (34) is made of an elastic metal material and is in a compressed state; The sewage discharge assembly (5) includes a ball valve (1) with a connecting seat (51) fixedly installed on the lower side. A connecting pipe (52) is fixedly installed at the lower end of the connecting seat (51). A bottom pipe seat (53) is fixedly installed between the connecting seat (51) and the connecting pipe (52). Several sets of water outlets (54) are opened on the upper side of the bottom pipe seat (53) near the inner side of the ball valve (1). A sealing plug (55) is movably installed on the inner side of the bottom pipe seat (53). A spring (56) is fixedly installed between the sealing plug (55) and the upper inner wall of the bottom pipe seat (53). A pull rod (57) is fixedly installed at the upper end of the sealing plug (55). A pull block (58) is fixedly installed at the upper end of the pull rod (57).

2. The low-torque ball valve according to claim 1, characterized in that: The control box (23) consists of a cover plate and a box body. The drive gear (24) and the transmission gear (27) are meshed. The drive gear (24) rotation shaft and a set of transmission shafts (211) are respectively inserted into the inner side of two sets of flange seats (214). The control rod (25) passes through the ball valve (1), the flange joint (21), and the upper side of the control box (23).

3. A low-torque ball valve according to claim 1, characterized in that: The handle (26) passes through the interior of the L-shaped guide opening (22), the pressure block (29) presses on the upper end of the first transmission gear (27), the two sets of second transmission gears (210) are respectively meshed with a set of third transmission gears (212) nearby, the two sets of third transmission gears (212) are meshed with each other, the movable sleeve on the lower side of the handwheel (213) is fixedly installed on the upper end of the control box (23) by bolts, and the rotating shafts of the two sets of drive motors (215) are respectively engaged with the rotating shaft of the drive gear (24) and a set of transmission shafts (211).

4. A low-torque ball valve according to claim 1, characterized in that: The control block (31) is positioned between the upper notch of the ball ring (34) and the two sets of valve discs (35). The contact surfaces of the control block (31) with the ball ring (34) and the valve discs (35) are inclined.

5. A low-torque ball valve according to claim 1, characterized in that: The two sets of connectors (33) on the fixed shaft (32) are respectively inserted into the slots (36) on the upper side of the two sets of valve discs (35), and the two sets of valve discs (35) are sealed and fitted with the two sets of valve body bases (4).

6. A low-torque ball valve according to claim 1, characterized in that: The sealing plug (55) is sealed and fitted inside the bottom pipe seat (53) at the position corresponding to the water outlet (54), and the pull rod (57) passes through the inside of the ball ring (34), the control block (31), and the control rod (25).

Images