Efficient and accurate flow control ball valve

Abstract

The utility model relates to the technical field of ball valves, in particular to an efficient and accurate flow control ball valve which comprises a ball valve body, a handle is arranged on the ball valve body, a movable cavity is formed in the handle, a linkage shaft is rotatably arranged in the movable cavity, a torsion spring is arranged between the outer wall of the linkage shaft and the inner wall of the movable cavity, a linkage arm is fixedly arranged on the linkage shaft, and a flow control valve is arranged on the linkage arm. A locking rod is arranged at one end of the linkage arm, the bottom end of the locking rod penetrates through the handle and faces the side of the ball valve body, a set of locking grooves are formed in the ball valve body, the locking rod is inserted into the locking grooves, a pressing block is arranged at the other end of the linkage arm, and the top end of the pressing block penetrates through the side, away from the ball valve body, of the handle. The operation steps of the locking handle are simplified, and the opening and closing efficiency of the control ball valve is improved.

Description

Technical Field

[0001] This utility model relates to the field of ball valve technology, and in particular to a high-efficiency and precise flow control ball valve. Background Technology

[0002] A ball valve is a type of valve with a spherical opening and closing element. It opens and closes the fluid passage by rotating the ball. Due to its simple structure, ease of operation, and good sealing performance, ball valves are widely used in various industrial fields.

[0003] A related technology, Chinese patent CN215568075U, provides a compact ball valve, which includes a valve body, a valve seat mounted inside the valve body, a valve cover mounted on the valve seat, a packing gland mounted on the valve cover, a ball mounted inside the valve seat, a valve stem mounted on the ball, the valve stem passing through the valve cover and the packing gland, a handle mounted on the end of the valve cover away from the ball, a positioning plate mounted on the handle, a corresponding hole on the positioning plate, two limit holes and two positioning holes on the packing gland, internal threads connecting hexagonal socket bolts to the limit holes, the nuts of the hexagonal socket bolts in the limit holes abutting against the positioning plate, so that the corresponding hole on the positioning plate corresponds to one of the positioning holes, and a positioning pin or bolt simultaneously inserted into the corresponding corresponding hole and positioning hole, so that the handle is fixed relative to the packing gland, and will not rotate arbitrarily due to external influence after the handle is rotated to the correct position.

[0004] In the process of developing this application, the inventors discovered that the technology has at least the following problems: before the drive handle is turned, the positioning pin or bolt needs to be disassembled, and after the handle is turned into place, the positioning pin or bolt needs to be reinstalled. Although the positioning pin or bolt is easy to disassemble and reinstall, this disassembly and reinstallation process increases the cumbersomeness of the operation and leads to a decrease in the efficiency of controlling the opening and closing of the ball valve. Utility Model Content

[0005] To simplify the operation of the locking handle and improve the efficiency of controlling the opening and closing of the ball valve, this application provides a high-efficiency and precise flow control ball valve.

[0006] The high-efficiency and precise flow control ball valve provided in this application adopts the following technical solution:

[0007] A high-efficiency and precise flow control ball valve includes a ball valve body, a handle on the ball valve body, a movable cavity inside the handle, a linkage shaft rotatably mounted inside the movable cavity, a torsion spring between the outer wall of the linkage shaft and the inner wall of the movable cavity, a linkage arm fixedly mounted on the linkage shaft, a locking rod at one end of the linkage arm, the bottom end of the locking rod penetrating the handle towards the ball valve body, a set of locking grooves on the ball valve body for inserting the locking rod, and a pressing block at the other end of the linkage arm, the top end of the pressing block penetrating the handle away from the ball valve body.

[0008] By adopting the above technical solution, when no external force is applied to the handle, the linkage shaft, under the force of the torsion spring, causes one end of the linkage arm to protrude the pressing block from the handle, and the other end of the linkage arm to protrude the locking rod from the handle. The end of the locking rod protruding from the handle is inserted into the locking groove, thereby achieving the effect of locking the ball valve body and the handle. When the handle is turned, the operator grips the handle and the pressing block, thereby pressing the pressing block into the movable cavity. The movement of the pressing block drives the linkage arm to rotate, thereby moving the locking rod out of the locking groove, thus canceling the lock between the ball valve body and the handle. Therefore, canceling the lock between the handle and the ball valve body only requires the operator to grip the handle and the pressing block, and locking the handle and the ball valve body only requires the operator to release the handle and the pressing block. This reduces the procedure of disassembling and assembling the positioning pin or bolt, simplifies the operation steps of locking the handle, and improves the efficiency of controlling the opening and closing of the ball valve.

[0009] Preferably, the ball valve body includes a valve body, a valve seat, a valve cover, a packing gland, a ball, and a valve stem. A fluid passage is formed through the ball. The ball is rotatably disposed within the valve seat. The valve seat is disposed within the valve body. The valve cover is disposed on the valve seat. The packing gland is disposed on the valve cover. The valve stem passes through the valve cover and the packing gland. One end of the valve stem is fixedly connected to the ball, and the other end of the valve stem is fixedly connected to a handle. A locking groove is formed on the packing gland.

[0010] By adopting the above technical solution, the rotation of the handle drives the valve stem to rotate, the rotation of the valve stem drives the ball to rotate, and the rotation of the ball drives the fluid channel to rotate. When the fluid channel connects the openings on both sides of the valve body, the ball valve body is in the open state. When the fluid channel does not connect the openings on both sides of the valve body, the ball valve body is in the closed state, thereby achieving the effect of controlling the opening and closing of the ball valve body.

[0011] Preferably, a limiting plate is fixedly provided on the handle, and a set of limiting rods is fixedly provided on the packing gland, the limiting rods being used to abut against the limiting plate.

[0012] By adopting the above technical solution, the handle rotates while driving the limiting plate to rotate. When the limiting plate rotates to abut against any of the limiting rods, the locking rod and the locking groove are positioned opposite each other, which makes it easy for the locking rod to be inserted into the locking groove.

[0013] Preferably, a set of positioning grooves are provided on the packing gland, and positioning bolts are threaded into the positioning grooves. Positioning holes are provided on the limiting plate for the positioning bolts to be inserted.

[0014] By adopting the above technical solution, when the locking rod, torsion spring, linkage shaft, linkage rod, or pressing block malfunctions, causing the locking rod to be unable to move normally, the positioning bolt in the positioning groove is removed, and then the positioning bolt is threaded through the positioning hole and connected to the positioning groove, thereby locking the handle and the ball valve body, which facilitates the maintenance of the parts in the moving cavity. When the locking rod, torsion spring, linkage shaft, linkage rod, and pressing block are working normally, the positioning bolt is threaded in the positioning groove, and the height of the top of the positioning bolt does not exceed the height of the bottom of the handle and the bottom of the limit plate, so that the positioning bolt does not interfere with the movement of the handle, making it easy for the handle to rotate.

[0015] Preferably, a pressing groove is provided on the side of the handle away from the ball valve body, the pressing groove is connected to the movable cavity, the pressing block is slidably disposed in the pressing groove, and the side of the pressing block located in the movable cavity abuts against the linkage arm.

[0016] By adopting the above technical solution, when the operator grips the handle and the pressing block, the pressing block is forced into the movable cavity. During the movement of the pressing block, it squeezes the linkage arm, causing the linkage arm and the linkage shaft to rotate. When the operator releases the handle and the pressing block, the torsion spring drives the linkage arm and the linkage shaft to reset. At this time, the linkage arm pushes the pressing block, causing the top of the pressing block to protrude from the handle.

[0017] Preferably, the pressing block has several guide holes on one side of the movable cavity, a guide rod is inserted into the guide hole, the guide rod is fixedly connected to the inner wall of the movable cavity, a pressing spring is sleeved on the guide rod, the pressing spring abuts between the pressing block and the inner wall of the movable cavity, and a through hole is opened on the linkage arm for the guide rod and the pressing spring to be inserted.

[0018] By adopting the above technical solution, the pressing block moves along the guide rod. When the pressing block is forced into the movable cavity, the pressing block squeezes the pressing spring, and the pressing spring is compressed. When the operator releases the pressing block, the pressing spring resets and pushes the pressing block, causing the top of the pressing block to protrude from the handle.

[0019] Preferably, the handle has a locking hole on the side facing the ball valve body, the locking hole is connected to the movable cavity, the locking rod is inserted into the locking hole, and a pressure plate is fixedly installed on the side of the locking hole located in the movable cavity, the pressure plate abutting against the linkage arm.

[0020] By adopting the above technical solution, when the operator grips the handle and the pressing block, the linkage arm and the linkage shaft rotate, the linkage arm lifts the pressure plate, and the pressure plate drives the locking rod to move along the locking hole, thereby causing the locking rod to move out of the locking groove.

[0021] Preferably, a plurality of pressure rods are provided through the pressure plate, the pressure rods are fixedly connected to the inside of the movable cavity, and a pressure spring is sleeved on the pressure rod, the pressure spring abutting between the pressure plate and the inner wall of the movable cavity.

[0022] By adopting the above technical solution, after the torsion spring drives the linkage arm and linkage shaft to reset, the pressure spring presses the pressure plate against the linkage arm, so that the locking rod is inserted into the locking groove.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. By setting up a ball valve body, handle, movable chamber, linkage shaft, torsion spring, linkage arm, locking rod, locking groove and pressing block, when the handle and ball valve body are unlocked, the operator only needs to grasp the handle and pressing block. When the handle and ball valve body are locked, the operator only needs to release the handle and pressing block. This reduces the procedure of disassembling and assembling positioning pins or bolts, thereby simplifying the operation steps of locking the handle and improving the efficiency of controlling the opening and closing of the ball valve.

[0025] 2. By setting a limiting plate and a limiting rod, it is easy for the locking rod to be inserted into the locking groove;

[0026] 3. By setting positioning grooves, positioning bolts, and positioning holes, the handle is locked to the ball valve body while facilitating maintenance of the parts inside the moving chamber. Attached Figure Description

[0027] Figure 1 This is a cross-sectional view of a high-efficiency and precise flow control ball valve in an embodiment of this application.

[0028] Figure 2 This is a cross-sectional view illustrating the connection between the valve body and the ball in the embodiments of this application.

[0029] Figure 3 This is a cross-sectional view illustrating the connection between the handle and the packing gland in an embodiment of this application.

[0030] Figure 4 This is a cross-sectional view illustrating the connection between the torsion spring and the linkage shaft in an embodiment of this application.

[0031] Figure 5 This is a schematic diagram illustrating the positional relationship between the limiting plate and the limiting rod in the embodiments of this application.

[0032] Figure 6 This is a schematic diagram illustrating the positional relationship between the positioning groove and the locking groove in an embodiment of this application.

[0033] Explanation of reference numerals in the attached drawings: 1. Ball valve body; 11. Valve body; 12. Valve seat; 13. Valve cover; 14. Packing gland; 15. Ball; 16. Valve stem; 17. Fluid passage; 2. Handle; 21. Moving chamber; 3. Linkage shaft; 31. Torsion spring; 32. Linkage arm; 321. Through hole; 4. Locking rod; 41. Locking hole; 42. Locking groove; 5. Pressing block; 51. Pressing groove; 6. Limiting plate; 61. Limiting rod; 7. Positioning bolt; 71. Positioning groove; 72. Positioning hole; 8. Guide rod; 81. Guide hole; 82. Pressing spring; 9. Pressing rod; 91. Pressing plate; 92. Pressing spring. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0035] This application discloses a high-efficiency and precise flow control ball valve. (Refer to...) Figure 1 and Figure 2 The valve includes a ball valve body 1, which comprises a valve body 11, a valve seat 12, a valve cover 13, a packing gland 14, a ball 15, and a valve stem 16. The ball 15 is rotatably mounted within the valve seat 12, which is installed within the valve body 11. Openings are formed at both ends of the valve body 11 and the valve seat 12. A fluid passage 17 is formed through the ball 15 to connect the openings. The valve cover 13 is fitted onto the valve seat 12, and the packing gland 14 is installed on the valve cover 13. The valve stem 16 passes through the valve cover 13 and the packing gland 14, and packing is installed between the valve stem 16, the valve cover 13, and the packing gland 14. One end of the valve stem 16 is welded to the ball 15, and a handle 2 is installed on the other end of the valve stem 16. The rotation of handle 2 causes valve stem 16 to rotate, which in turn causes ball 15 to rotate, which in turn causes fluid passage 17 to rotate. When fluid passage 17 connects the openings on both sides of valve body 11, ball valve body 1 is in the open state. When fluid passage 17 does not connect the openings on both sides of valve body 11, ball valve body 1 is in the closed state, thereby achieving the effect of controlling the opening and closing of ball valve body 1.

[0036] refer to Figures 1 to 6The handle 2 has a movable cavity 21 inside, and a linkage shaft 3 is rotatably mounted inside the movable cavity 21. A linkage arm 32 is welded to the linkage shaft 3. A torsion spring 31 is sleeved on the linkage shaft 3. One end of the torsion spring 31 is welded to the inner wall of the movable cavity 21, and the other end of the torsion spring 31 is welded to the linkage arm 32. A locking hole 41 is opened on the side of the handle 2 facing the ball valve body 1, and the locking hole 41 is interconnected with the movable cavity 21. A locking rod 4 is slidably mounted in the locking hole 41. A pressure plate 91 is installed on the side of the locking hole 41 located inside the movable cavity 21, and the pressure plate 91 abuts against the linkage arm 32. A set of locking grooves 42 is opened on the packing gland 14, and the locking grooves 42 allow the end of the locking rod 4 located outside the movable cavity 21 to be inserted. A pressing groove 51 is opened on the side of the handle 2 away from the ball valve body 1, and the pressing groove 51 is interconnected with the movable cavity 21. A pressing block 5 is slidably disposed within the pressing groove 51. The top of the pressing block 5 protrudes from the handle 2, and the bottom of the pressing block 5 abuts against the linkage arm 32. When no external force is applied to the handle 2, the linkage shaft 3, under the force of the torsion spring 31, causes one end of the linkage arm 32 to protrude the pressing block 5 from the handle 2, and the other end of the linkage arm 32 to protrude the locking rod 4 from the handle 2. The end of the locking rod 4 protruding from the handle 2 is inserted into the locking groove 42, thereby achieving the effect of locking the ball valve body 1 and the handle 2. When the handle 2 is rotated, the operator grips the handle 2 and the pressing block 5, thereby pressing the pressing block 5 into the movable cavity 21. The movement of the pressing block 5 drives the linkage arm 32 to rotate, thereby moving the linkage arm 32 out of the locking groove 42, thus canceling the lock between the ball valve body 1 and the handle 2. Therefore, to unlock the handle 2 from the ball valve body 1, the operator only needs to grip the handle 2 and the pressing block 5; to lock the handle 2 from the ball valve body 1, the operator only needs to release the handle 2 from the pressing block 5. This reduces the procedure of removing and installing the locating pin or bolt, simplifying the operation of locking the handle 2 and improving the efficiency of controlling the opening and closing of the ball valve.

[0037] To facilitate the insertion of the locking rod 4 into the locking groove 42, refer to Figures 3 to 6 A limiting plate 6 is installed on the handle 2, and a set of limiting rods 61 are installed on the packing gland 14. The limiting rods 61 are used to abut against the limiting plate 6. When the handle 2 is rotated, the limiting plate 6 is rotated. When the limiting plate 6 rotates to abut against any of the limiting rods 61, the locking rod 4 is positioned opposite to the locking groove 42.

[0038] To facilitate maintenance of the parts inside the movable cavity 21 by staff, refer to Figures 3 to 6A set of positioning grooves 71 are provided on the packing gland 14, and positioning bolts 7 are threadedly connected to the internal threads of the positioning grooves 71. Positioning holes 72 are provided on the limiting plate 6 for the positioning bolts 7 to be inserted. When the locking rod 4, torsion spring 31, linkage shaft 3, linkage rod, or pressing block 5 malfunctions, causing the locking rod 4 to be unable to move normally, the positioning bolts 7 in the positioning grooves 71 are removed, and then the positioning bolts 7 are threaded through the positioning holes 72 and then threadedly connected to the positioning grooves 71, thereby locking the handle 2 to the ball valve body 1, facilitating the maintenance of the parts in the moving chamber 21. When the locking rod 4, torsion spring 31, linkage shaft 3, linkage rod, and pressing block 5 are working normally, the positioning bolts 7 are threadedly connected in the positioning grooves 71, and the top height of the positioning bolts 7 does not exceed the bottom height of the handle 2 and the bottom height of the limiting plate 6, so that the positioning bolts 7 do not interfere with the movement of the handle 2, facilitating the rotation of the handle 2.

[0039] To facilitate the pressing of the protruding handle 2 of the pressing block 5, refer to... Figure 3 and Figure 4 The pressing block 5 has several guide holes 81 on one side inside the movable cavity 21. Guide rods 8 are inserted into the guide holes 81 and welded to the inner wall of the movable cavity 21. A pressing spring 82 is sleeved on the guide rod 8 and abuts against the pressing block 5 and the inner wall of the movable cavity 21. A through hole 321 is opened on the linkage arm 32 for the guide rods 8 and the pressing spring 82 to be inserted. When the operator grips the handle 2 and the pressing block 5, the pressing block 5 is forced into the movable cavity 21. During the movement of the pressing block 5, it squeezes the linkage arm 32 and the pressing spring 82, causing the linkage arm 32 and the linkage shaft 3 to rotate. When the operator releases the handle 2 and the pressing block 5, the torsion spring 31 drives the linkage arm 32 and the linkage shaft 3 to return to their original positions, causing the linkage arm 32 to push the pressing block 5. At the same time, the pressing spring 82 returns to its original position and pushes the pressing block 5, thereby protruding the top of the pressing block 5 out of the handle 2.

[0040] To facilitate the protrusion of the locking lever 4 from the handle 2, refer to... Figure 3 A plurality of pressure rods 9 are provided through the pressure plate 91, and the pressure rods 9 are welded to the inside of the movable cavity 21. A pressure spring 92 is sleeved on the pressure rod 9, and the pressure spring 92 abuts against the pressure plate 91 and the inner wall of the movable cavity 21. When the torsion spring 31 drives the linkage arm 32 and the linkage shaft 3 to reset, the pressure spring 92 abuts the pressure plate 91 against the linkage arm 32, so that the locking rod 4 is inserted into the locking groove 42. When the operator grips the handle 2 and the pressing block 5, the linkage arm 32 and the linkage shaft 3 rotate, the linkage arm 32 lifts the pressure plate 91, and the pressure plate 91 drives the locking rod 4 to move along the locking hole 41, thereby moving the locking rod 4 out of the locking groove 42.

[0041] The implementation principle of a high-efficiency and precise flow control ball valve according to this application embodiment is as follows: When no external force is applied to the handle 2, under the force of the torsion spring 31, the linkage shaft 3 causes one end of the linkage arm 32 to protrude the pressing block 5 out of the handle 2, and the other end of the linkage arm 32 to protrude the locking rod 4 out of the handle 2. The end of the locking rod 4 protruding from the handle 2 is inserted into the locking groove 42, thereby achieving the effect of locking the ball valve body 1 and the handle 2. When the handle 2 is rotated, the operator grips the handle 2 and the pressing block 5, thereby pressing the pressing block 5 into the movable cavity 21. The movement of the pressing block 5 drives the linkage arm 32 to rotate, thereby moving the linkage arm 32 out of the locking groove 42, thus canceling the lock between the ball valve body 1 and the handle 2. Therefore, canceling the lock between the handle 2 and the ball valve body 1 only requires the operator to grip the handle 2 and the pressing block 5, and locking the handle 2 and the ball valve body 1 only requires the operator to release the handle 2 from the pressing block 5. By reducing the procedures for disassembling and assembling locating pins or bolts, the operation steps of locking handle 2 are simplified, thereby improving the efficiency of controlling the opening and closing of the ball valve.

[0042] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A high-efficiency and precise flow control ball valve, comprising a ball valve body (1), wherein a handle (2) is provided on the ball valve body (1), characterized in that: The handle (2) has an internal movable cavity (21). A linkage shaft (3) is rotatably installed inside the movable cavity (21). A torsion spring (31) is installed between the outer wall of the linkage shaft (3) and the inner wall of the movable cavity (21). A linkage arm (32) is fixedly installed on the linkage shaft (3). A locking rod (4) is installed at one end of the linkage arm (32). The bottom end of the locking rod (4) passes through the handle (2) and faces the ball valve body (1). A set of locking grooves (42) is provided on the ball valve body (1). The locking grooves (42) are for the locking rod (4) to be inserted. A pressing block (5) is installed at the other end of the linkage arm (32). The top end of the pressing block (5) passes through the handle (2) and faces away from the ball valve body (1).

2. The high-efficiency and precise flow control ball valve according to claim 1, characterized in that: The ball valve body (1) includes a valve body (11), a valve seat (12), a valve cover (13), a packing gland (14), a ball (15), and a valve stem (16). A fluid passage (17) is opened through the ball (15). The ball (15) is rotatably disposed in the valve seat (12). The valve seat (12) is disposed in the valve body (11). The valve cover (13) is disposed on the valve seat (12). The packing gland (14) is disposed on the valve cover (13). The valve stem (16) passes through the valve cover (13) and the packing gland (14). One end of the valve stem (16) is fixedly connected to the ball (15), and the other end of the valve stem (16) is fixedly connected to the handle (2). The locking groove (42) is opened on the packing gland (14).

3. The high-efficiency and precise flow control ball valve according to claim 2, characterized in that: A limiting plate (6) is fixedly installed on the handle (2), and a set of limiting rods (61) is fixedly installed on the packing gland (14). The limiting rods (61) are used to abut against the limiting plate (6).

4. The high-efficiency and precise flow control ball valve according to claim 3, characterized in that: A set of positioning grooves (71) are provided on the packing gland (14), and a positioning bolt (7) is threadedly connected to the positioning groove (71). A positioning hole (72) is provided on the limiting plate (6), and the positioning hole (72) is for the positioning bolt (7) to be inserted.

5. The high-efficiency and precise flow control ball valve according to claim 1, characterized in that: The handle (2) has a pressing groove (51) on the side away from the ball valve body (1). The pressing groove (51) is connected to the movable cavity (21). The pressing block (5) is slidably disposed in the pressing groove (51). The pressing block (5) is located in the movable cavity (21) and abuts against the linkage arm (32).

6. The high-efficiency and precise flow control ball valve according to claim 5, characterized in that: The pressing block (5) has several guide holes (81) on one side inside the movable cavity (21). A guide rod (8) is inserted into the guide hole (81). The guide rod (8) is fixedly connected to the inner wall of the movable cavity (21). A pressing spring (82) is sleeved on the guide rod (8). The pressing spring (82) abuts against the pressing block (5) and the inner wall of the movable cavity (21). A through hole (321) is opened on the linkage arm (32). The through hole (321) allows the guide rod (8) and the pressing spring (82) to be inserted.

7. The high-efficiency and precise flow control ball valve according to claim 1, characterized in that: The handle (2) has a locking hole (41) on the side facing the ball valve body (1). The locking hole (41) is connected to the movable cavity (21). The locking rod (4) is inserted into the locking hole (41). A pressure plate (91) is fixedly installed on the side of the locking hole (41) inside the movable cavity (21). The pressure plate (91) abuts against the linkage arm (32).

8. The high-efficiency and precise flow control ball valve according to claim 7, characterized in that: A plurality of pressure rods (9) are provided through the pressure plate (91). The pressure rods (9) are fixedly connected to the interior of the movable cavity (21). A pressure spring (92) is sleeved on the pressure rod (9). The pressure spring (92) abuts against the inner wall of the pressure plate (91) and the movable cavity (21).

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