Ball valve ball for facilitating control of flow rate

Abstract

The present application relates to the technical field of ball valve ball, especially to a ball valve ball convenient to control flow rate, which can more accurately regulate water flow and more conveniently control the degree of regulation, and is more convenient to use.The ball valve ball convenient to control flow rate comprises a ball, a ball rod, a hand wheel and a flow rate adjusting mechanism, etc.;the ball is provided with a flow-through opening, the ball rod is sleeved on the top of the ball, the hand wheel is fixedly connected to the top end of the ball rod, and the flow rate adjusting mechanism is arranged on the ball.The present application regulates the flow rate of water flow by controlling the deformation degree of two adjusting thin steel plates, and can more accurately control water flow compared with the traditional ball valve, and the bidirectional screw rod locks the screw nut, thereby locking the two adjusting thin steel plates, so that the two adjusting thin steel plates can more stably control the flow rate of water flow.

Description

Technical Field

[0001] This invention relates to the field of ball valve ball technology, and more particularly to a ball valve ball that facilitates flow rate control. Background Technology

[0002] A ball valve is a valve in which the opening and closing element (ball) is driven by the valve stem and rotates around the axis of the ball valve. Ball valves are mainly used in pipelines for cutting off, distributing and changing the flow direction of the medium. It only requires a 90-degree rotation and a very small torque to close tightly, so the use of ball valves is very common. The ball with a through hole is installed inside the housing, and the size of opening and closing can be selected.

[0003] The existing ball valve has a relatively simple structure, mainly using a ball to regulate the flow rate. However, the ball can only be opened and closed simply, and cannot precisely regulate the flow rate. It is also inconvenient for operators to control the specific degree of regulation. When precise regulation of the flow rate is required, the existing ball valve cannot perform this function well and is not convenient to use. Summary of the Invention

[0004] In view of this, the present invention provides a ball valve ball that facilitates flow rate control, enabling more precise regulation of water flow, easier control of the degree of regulation, and greater ease of use.

[0005] Technical solution: A ball valve ball for easy flow rate control, comprising a ball body, a ball rod, a handwheel, a flow rate regulating mechanism, and a linear regulating device. The ball body has a flow port, the ball rod is sleeved on the top of the ball body, the handwheel is fixedly connected to the top of the ball rod, the flow rate regulating mechanism is located on the ball body, and the linear regulating device is located on the ball body.

[0006] Optionally, the handwheel is made of a transparent material.

[0007] Optionally, the flow rate regulating mechanism includes a large gear, a double-acting lead screw, a small gear, a lead screw nut, an adjusting thin steel plate, a hexagonal block, and a hexagonal ring. The large gear is rotatably connected to the sphere, the double-acting lead screw is rotatably connected to the sphere, the small gear is fixedly connected to the top of the double-acting lead screw, the large gear meshes with the small gear, two lead screw nuts are threadedly connected to the double-acting lead screw, two adjusting thin steel plates are placed on the sphere, both of the adjusting thin steel plates are located within the flow opening of the sphere, the middle part of the adjusting thin steel plate is fixedly connected to the lead screw nut, the hexagonal block is fixedly connected to the large gear, and the hexagonal ring is fixedly connected to the bottom end of the ball rod, the hexagonal ring is engaged with the sphere.

[0008] Optionally, both of the aforementioned adjusting thin steel plates are made of aluminum alloy.

[0009] Optionally, the linear adjustment device includes an arc plate, a mounting block, a wedge block, and a return spring. Two arc plates are rotatably connected to the ball, and the two arc plates are symmetrically arranged. A mounting block is fixedly connected to the top of each of the two arc plates. A wedge block is slidably connected inside each of the two mounting blocks. Two return springs are connected between the mounting block and the wedge block. Two locking holes are provided at the bottom of the cue stick.

[0010] Optionally, it also includes pulleys, with pulleys rotatably connected to all four ends of the two adjusting thin steel plates.

[0011] Optionally, the device also includes an observation mechanism mounted on the cue stick. The observation mechanism comprises a hollow rod, a spiral disc, push blocks, a spring plate, a slide rail, a guide rod, and a hexagonal rod. The hollow rod is rotatably connected to the cue stick. The spiral disc is fixedly connected to the top of the hollow rod and is located inside the handwheel. Two push blocks are slidably connected to the spiral disc, and the two push blocks are symmetrically arranged. Two slide rails are fixedly connected to the top inner side of the handwheel, and spring plates are placed on both slide rails, contacting the push blocks. The guide rod is fixedly connected to the inner wall of the handwheel, and the two push blocks are slidably connected to the guide rod. The hexagonal rod is slidably connected inside the hollow rod and is fixedly connected to the hexagonal block.

[0012] Optionally, both of the aforementioned spring plates are made of elastic material.

[0013] The present invention has the following advantages:

[0014] 1. If the water flow is rapid, the operator first presses the handwheel downwards to make the wedge block engage in the locking hole. Then, the operator rotates the handwheel to rotate the two arc plates and block the flow opening of the ball, thus shutting off the water flow and preventing it from causing a large impact. Next, the operator continues to push the handwheel downwards to make the hexagonal block engage in the hexagonal ring. Then, the operator continues to rotate the handwheel to move the middle of the two adjusting thin steel plates closer to each other and block part of the flow opening of the ball. Finally, the operator opens the two arc plates, and the water flow will flow through the gap between the two adjusting thin steel plates, thus regulating the rapid water flow.

[0015] 2. If the water flow is slow, the operator can press the handwheel downwards to make the hexagonal block engage with the hexagonal ring. Then, continue turning the handwheel to move the middle of the two adjusting thin steel plates closer to each other, blocking part of the ball's flow opening and directly reducing the water flow rate, thus controlling the flow rate of the slow-moving water.

[0016] 3. The greater the deformation of the two adjusting thin steel plates, the lower the water flow rate. Operators can regulate the water flow rate by controlling the deformation of the two adjusting thin steel plates. Compared with traditional ball valves, this invention can control the water flow more precisely. At the same time, since the bidirectional screw locks the screw nut, it will lock the two adjusting thin steel plates, allowing the two adjusting thin steel plates to control the water flow rate more stably.

[0017] 4. When the operator turns the handwheel, it will drive the hexagonal rod to rotate, causing the two push blocks to deform the two spring plates. Since the speed at which the screw nut moves is the same as the speed at which the push blocks move, the degree of deformation of the spring plates is the same as the degree of deformation of the adjusting steel plate. At the same time, since the handwheel is made of transparent material, the operator can easily observe the degree of deformation of the two spring plates, and thus control the degree of deformation of the two adjusting steel plates, so as to better check the degree of water flow regulation and thus more conveniently control the water flow rate. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This is a cross-sectional three-dimensional structural diagram of the present invention.

[0020] Figure 3 This is a three-dimensional structural diagram of the cue stick, handwheel, and hexagonal ring of the present invention.

[0021] Figure 4 This is a partial cross-sectional three-dimensional structural schematic diagram of the flow rate regulating mechanism of the present invention.

[0022] Figure 5 This is a partial cross-sectional three-dimensional structural schematic diagram of the flow rate regulating mechanism of the present invention.

[0023] Figure 6 This is a schematic diagram of the third partial cross-sectional three-dimensional structure of the flow rate regulating mechanism of the present invention.

[0024] Figure 7 This is a partial cross-sectional three-dimensional structural schematic diagram of the flow rate regulating mechanism of the present invention.

[0025] Figure 8 For the present invention Figure 7 A magnified three-dimensional structural diagram of A in the middle.

[0026] Figure 9 This is a partial cross-sectional three-dimensional structural schematic diagram of the flow rate adjustment mechanism and observation mechanism of the present invention.

[0027] Figure 10 For the present invention Figure 9 A magnified three-dimensional structural diagram of B.

[0028] Figure 11 This is a schematic diagram of the partial separation three-dimensional structure of the linear adjustment device of the present invention.

[0029] Figure 12 This is a schematic diagram of the first partial cross-sectional three-dimensional structure of the observation mechanism of the present invention.

[0030] Figure 13 This is a schematic diagram of a second partial cross-sectional three-dimensional structure of the observation mechanism of the present invention.

[0031] Figure 14 This is a partial cross-sectional three-dimensional structural schematic diagram of the flow rate adjustment mechanism and observation mechanism of the present invention.

[0032] Figure 15 This is a three-dimensional structural diagram of the spring sheet thin plate of the present invention.

[0033] The meanings of the labels in the attached diagram are as follows: 1: Sphere, 2: Cudgel, 3: Handwheel, 41: Large gear, 42: Double-acting lead screw, 43: Small gear, 44: Lead screw nut, 45: Adjusting thin steel plate, 46: Hexagonal block, 47: Hexagonal ring, 51: Arc plate, 52: Mounting block, 53: Wedge block, 54: Return spring, 55: Locking hole, 6: Pulley, 71: Hollow rod, 72: Spiral disc, 73: Push block, 74: Spring sheet plate, 75: Slide rail, 76: Guide rod, 77: Hexagonal rod. Detailed Implementation

[0034] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0035] Example 1

[0036] A ball valve ball that facilitates flow rate control, such as Figures 1-11 As shown, it includes a ball 1, a cue stick 2, a handwheel 3, a flow rate adjustment mechanism, and a linear adjustment device. The ball 1 has a flow port. The cue stick 2 is sleeved on the top of the ball 1. The handwheel 3 is bolted to the top of the cue stick 2. The flow rate adjustment mechanism is located on the ball 1, and the linear adjustment device is located on the ball 1.

[0037] The handwheel 3 is made of transparent material.

[0038] The flow rate regulating mechanism includes a large gear 41, a double-acting lead screw 42, a small gear 43, a lead screw nut 44, an adjusting thin steel plate 45, a hexagonal block 46, and a hexagonal ring 47. The large gear 41 is rotatably connected to the sphere 1, and the double-acting lead screw 42 is rotatably connected to the sphere 1. The double-acting lead screw 42 is vertically arranged. The small gear 43 is connected to the top of the double-acting lead screw 42 by a flat key. The large gear 41 meshes with the small gear 43. Two lead screw nuts 44 are threadedly connected to the double-acting lead screw 42. Two adjusting thin steel plates 45 are placed on the sphere 1. Both adjusting thin steel plates 45 are located inside the flow port of the sphere 1. The middle part of the adjusting thin steel plate 45 is fixedly connected to the lead screw nut 44. The hexagonal block 46 is bolted to the large gear 41. The hexagonal ring 47 is bolted to the bottom end of the ball rod 2 and is engaged with the sphere 1.

[0039] Both of the aforementioned adjusting thin steel plates 45 are made of aluminum alloy.

[0040] The linear adjustment device includes an arc plate 51, a mounting block 52, a wedge block 53, and a return spring 54. Two arc plates 51 are rotatably connected to the ball 1. The two arc plates 51 are symmetrically arranged. The top of each arc plate 51 is fixedly connected to a mounting block 52. A wedge block 53 is slidably connected inside each mounting block 52. Two return springs 54 are connected between the mounting block 52 and the wedge block 53. Two locking holes 55 are opened at the lower part of the ball rod 2.

[0041] In actual operation, ball 1 is installed in the valve. Water in the pipeline can flow through the flow port of ball 1 in the valve. If the water flow velocity in the pipeline is relatively fast, the impact force and pressure of the water flow are relatively large. When the operator needs to reduce the water flow velocity, they can first press the handwheel 3 to move it downward. The downward movement of handwheel 3 will drive the ball rod 2 and hexagonal ring 47 to move downward together. The downward movement of hexagonal ring 47 will first squeeze the two wedge blocks 53 to move away from each other, and the return spring 54 will be compressed. The hexagonal ring 47 will continue to move downward and will disengage from the two wedge blocks 53. Then the ball rod 2 will move downward and contact the two wedge blocks 53, and continue to squeeze the wedge blocks 53. When the ball rod 2 moves downward, the locking hole 55 and the wedge block 53 are in the same position. When the spring 54 is reset, it will cause the two wedge blocks 53 to move closer to each other and engage in the locking hole 55. Then, the operator turns the handwheel 3, which will cause the cue stick 2 to rotate. The rotation of the cue stick 2 will cause the two wedge blocks 53 to move. The movement of the wedge blocks 53 will cause the arc plate 51 and the mounting block 52 to rotate together. The rotation of the two arc plates 51 will block the flow port of the ball 1, thus shutting off the water flow. This can prevent the impact and pressure of the water flow from affecting the subsequent adjustment of the water flow rate. Then, the operator continues to push the handwheel 3 downward, which will cause the cue stick 2 and the hexagonal ring 47 to continue to move downward. The continued downward movement of the cue stick 2 will cause the locking hole 55 to disengage from the wedge block 53. Then, the cue stick 2 continues to move downward. The movement compresses the two wedge blocks 53, causing them to move away from each other. The return spring 54 is compressed, and the hexagonal ring 47 continues to move downwards, contacting the hexagonal block 46. The hexagonal block 46 then gets stuck inside the hexagonal ring 47. Afterwards, the operator continues to turn the handwheel 3, which in turn causes the cue stick 2 and the hexagonal ring 47 to rotate together. The rotation of the hexagonal ring 47 causes the hexagonal block 46 to rotate, which in turn causes the large gear 41 to rotate. The rotation of the large gear 41 causes the small gear 43, which meshes with it, to rotate. The rotation of the small gear 43 causes the double-acting lead screw 42 to rotate, which in turn causes the two lead screw nuts 44 to move closer together. Because the adjusting thin steel plate 45 is relatively thin and has a certain deformation capacity, the movement of the upper lead screw nut 44 will pull... The middle part of the adjusting thin steel plate 45 bends downwards. The movement of the lead screw nut 44 located below will pull the middle part of the adjusting thin steel plate 45 upwards. At the same time, the left and right sides of the adjusting thin steel plate 45 will move towards each other. The movement of the middle parts of the two adjusting thin steel plates 45 towards each other will block part of the flow port of the ball 1. Then, the operator pulls the handwheel 3 upwards. The upward movement of the handwheel 3 will drive the ball rod 2 and the hexagonal ring 47 upwards together. The upward movement of the hexagonal ring 47 will disengage from the hexagonal block 46. The upward movement of the ball rod 2 will make the locking hole 55 and the wedge block 53 be in the same position. At this time, the return spring 54 will return and drive the two wedge blocks 53 towards each other and lock into the locking hole 55. The operator then turns the handwheel 3.The rotation of the cue stick 2 causes the wedge block 53 to rotate, which in turn causes the two arc plates 51 to rotate. The rotation of the two arc plates 51 will no longer block the flow opening of the ball 1, allowing water to flow through the gap between the two adjusting thin steel plates 45. Because the two adjusting thin steel plates 45 partially block the flow opening of the ball 1, the water flow through the gap between the two adjusting thin steel plates 45 at the same time is smaller, thus controlling the water flow. The operator can more precisely control the water flow rate by controlling the degree of deformation of the two adjusting thin steel plates 45; the greater the deformation of the two adjusting thin steel plates 45, the smaller the water flow rate. Simultaneously, because the double-acting screw 42 locks the screw nut 44, it also locks the two adjusting thin steel plates 45, allowing the two adjusting thin steel plates 45 to more stably control the water flow rate. When the operator needs to increase the water flow rate, first push the handwheel 3 downwards, causing the hexagonal ring 47 to move downwards. The handwheel 3 is moved and comes into contact with the hexagonal block 46, which then engages with the hexagonal ring 47. The operator then reverses the handwheel 3, causing the hexagonal ring 47 to rotate in the opposite direction, which in turn causes the hexagonal block 46 to rotate in the opposite direction. This rotation of the hexagonal block 46 causes the large gear 41 to rotate in the opposite direction, which in turn causes the small gear 43 to rotate in the opposite direction. This rotation of the small gear 43 causes the double-acting screw 42 to rotate in the opposite direction. The double-acting screw 42 then causes the two screw nuts 44 to move away from each other. The movement of the upper screw nut 44 pushes the middle of the adjusting thin steel plate 45 upwards, while the movement of the lower screw nut 44 pulls the middle of the adjusting thin steel plate 45 downwards. Simultaneously, the left and right sides of the adjusting thin steel plate 45 move away from each other, causing the adjusting thin steel plate 45 to return to its original position. The return of the middle of the two adjusting thin steel plates 45 will no longer block part of the flow opening of the ball 1, thus restoring the flow rate of the ball 1 flow opening and regulating the rapid water flow.

[0042] If the water flow velocity in the pipe is slow, the impact force and pressure of the water flow are also small. When the operator needs to reduce the water flow velocity in the pipe, first push the handwheel 3 downwards so that the hexagonal ring 47 moves downwards and contacts the hexagonal block 46. The hexagonal block 46 will then engage with the hexagonal ring 47. Then, the operator directly rotates the handwheel 3, causing the two screw nuts 44 to move closer together, pushing the middle of the two adjusting thin steel plates 45 to bend closer together. Since the water flow velocity is slow at this time, the impact force and pressure of the water flow are small and will not affect the adjusting thin steel plates 45. The bending of the middle of the two adjusting thin steel plates 45 will block part of the flow opening of the ball 1, thereby adjusting the water flow velocity. When the flow rate is increased, the operator first pushes the handwheel 3 upward to reset the hexagonal ring 47, causing it to return to its original position and disengage from the hexagonal block 46. When the operator needs to increase the water flow rate, the operator first pushes the handwheel 3 downward to move the hexagonal ring 47 downward and make it contact with the hexagonal block 46. The hexagonal block 46 will then be inserted into the hexagonal ring 47. Then, the operator rotates the handwheel 3 in the opposite direction, causing the two screw nuts 44 to move away from each other and push the middle part of the adjusting thin steel plate 45 to extend, so that the adjusting thin steel plate 45 returns to its original position. The return of the middle part of the two adjusting thin steel plates 45 will no longer block part of the flow opening of the ball 1, thereby restoring the flow rate of the ball 1 flow opening and thus controlling the flow rate of the slower water flow.

[0043] Example 2

[0044] Based on Example 1, such as Figures 7-8 As shown, it also includes pulleys 6, and pulleys 6 are rotatably connected to all four ends of the two adjusting thin steel plates 45.

[0045] When the two sides of the adjusting thin steel plate 45 move, the pulley 6 will move. The pulley 6 will rotate while moving, thereby reducing the friction between the adjusting thin steel plate 45 and the ball 1, reducing the wear of the adjusting thin steel plate 45, and making the adjusting thin steel plate 45 bend more smoothly.

[0046] Example 3

[0047] Based on Example 2, such as Figures 9-15As shown, it also includes an observation mechanism mounted on the cue stick 2. The observation mechanism includes a hollow rod 71, a spiral disc 72, a pusher block 73, a spring plate 74, a slide rail 75, a guide rod 76, and a hexagonal rod 77. The hollow rod 71 is rotatably connected to the cue stick 2 and is vertically positioned. The spiral disc 72 is bolted to the top of the hollow rod 71 and is located inside the handwheel 3. Two pusher blocks 73 are slidably connected to the spiral disc 72. The two pusher blocks 73 are arranged in a... The handwheel 3 is symmetrically arranged, with two slide rails 75 bolted to the top of its inner side. Both slide rails 75 are horizontally arranged, and spring plates 74 are placed on both slide rails 75. The spring plates 74 are in contact with the push blocks 73. The guide rod 76 is bolted to the inner wall of the handwheel 3 and is horizontally arranged. The two push blocks 73 are slidably connected to the guide rod 76. The hexagonal rod 77 is slidably connected inside the hollow rod 71 and is fixedly connected to the hexagonal block 46.

[0048] Both of the aforementioned spring plates 74 are made of elastic material.

[0049] As the cue stick 2 moves downward, it causes the hollow rod 71 to move downward. The rotation of the hexagonal block 46 causes the hexagonal rod 77 to rotate, which in turn causes the hollow rod 71 to rotate. The rotation of the hollow rod 71 causes the spiral disc 72 to rotate, which in turn causes the two push blocks 73 to move closer together. Because the spring plate 74 is relatively thin and has a certain deformation capacity, the movement of the push blocks 73 causes the middle of the spring plate 74 to bend, while the left and right sides of the spring plate 74 move closer together. Since the speed of the lead screw nut 44 and the speed of the push blocks 73 are the same, the degree of deformation of the spring plate 74 is the same as the degree of deformation of the adjusting thin steel plate 45. Furthermore, because the handwheel 3 is made of transparent material, it allows for easy... The staff can observe the deformation of the two spring plates 74, and then control the deformation of the two adjusting steel plates 45 to better monitor the degree of water flow regulation, thus making it easier to control the water flow rate. The upward reset of the ball rod 2 will drive the hollow rod 71 to reset upward. The reverse rotation of the hexagonal block 46 will drive the hexagonal rod 77 to rotate in the opposite direction. The reverse rotation of the hexagonal rod 77 will drive the hollow rod 71 to rotate in the opposite direction. The rotation of the hollow rod 71 will drive the spiral disk 72 to rotate in the opposite direction. The rotation of the spiral disk 72 will drive the two push blocks 73 to reset in a direction away from each other. The reset of the push blocks 73 will no longer push the spring plates 74. Since the spring plates 74 have a certain elasticity, the spring plates 74 will automatically return to their original position. At the same time, the left and right sides of the spring plates 74 will reset in a direction away from each other.

[0050] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A ball valve ball for easy flow rate control, characterized in that, It includes a ball (1), a cue stick (2), a handwheel (3), a flow rate adjustment mechanism, and a linear adjustment device. The ball (1) has a flow port. The cue stick (2) is sleeved on the top of the ball (1). The handwheel (3) is fixedly connected to the top of the cue stick (2). The flow rate adjustment mechanism is located on the ball (1). The linear adjustment device is located on the ball (1). The flow rate regulating mechanism includes a large gear (41), a double-acting lead screw (42), a small gear (43), a lead screw nut (44), an adjusting thin steel plate (45), a hexagonal block (46), and a hexagonal ring (47). The large gear (41) is rotatably connected to the sphere (1), the double-acting lead screw (42) is rotatably connected to the sphere (1), and the small gear (43) is fixedly connected to the top of the double-acting lead screw (42). The large gear (41) meshes with the small gear (43). Two screw nuts (44) are connected to the screw (42) by threads. Two adjusting thin steel plates (45) are placed on the ball (1). Both adjusting thin steel plates (45) are located in the flow port of the ball (1). The middle part of the adjusting thin steel plate (45) is fixedly connected to the screw nut (44). The hexagonal block (46) is fixedly connected to the large gear (41). The hexagonal ring (47) is fixedly connected to the bottom end of the ball rod (2). The hexagonal ring (47) is engaged with the ball (1). The linear adjustment device includes an arc plate (51), a mounting block (52), a wedge block (53), and a return spring (54). Two arc plates (51) are rotatably connected to the ball (1). The two arc plates (51) are symmetrically arranged. The top of each arc plate (51) is fixedly connected to a mounting block (52). The wedge block (53) is slidably connected inside each mounting block (52). Two return springs (54) are connected between the mounting block (52) and the wedge block (53). Two locking holes (55) are opened at the bottom of the ball rod (2).

2. The ball valve ball for easy flow rate control as described in claim 1, characterized in that, The handwheel (3) is made of transparent material.

3. The ball valve ball for easy flow rate control as described in claim 2, characterized in that, Both of the aforementioned adjusting thin steel plates (45) are made of aluminum alloy.

4. The ball valve ball for easy flow rate control as described in claim 3, characterized in that, It also includes pulleys (6), and the four ends of the two adjusting thin steel plates (45) are rotatably connected to pulleys (6).

5. The ball valve ball for easy flow rate control as described in claim 4, characterized in that, It also includes an observation mechanism, which is mounted on the cue stick (2). The observation mechanism includes a hollow rod (71), a spiral disc (72), a pusher block (73), a spring plate (74), a slide rail (75), a guide rod (76), and a hexagonal rod (77). The hollow rod (71) is rotatably connected to the cue stick (2). The spiral disc (72) is fixedly connected to the top of the hollow rod (71). The spiral disc (72) is located inside the handwheel (3). Two pushers (73) are slidably connected to the spiral disc (72). The push blocks (73) are arranged symmetrically. Two slide rails (75) are fixedly connected to the top of the inner side of the handwheel (3). Spring plates (74) are placed on both slide rails (75). The spring plates (74) are in contact with the push blocks (73). The guide rod (76) is fixedly connected to the inner wall of the handwheel (3). The two push blocks (73) are slidably connected to the guide rod (76) respectively. The hexagonal rod (77) is slidably connected inside the hollow rod (71). The hexagonal rod (77) is fixedly connected to the hexagonal block (46).

6. The ball valve ball for easy flow rate control as described in claim 5, characterized in that, Both of the aforementioned spring plates (74) are made of elastic material.

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