Stop valve with adjustable force

Abstract

The stop valve comprises a valve body, a shell is installed at the upper end of the valve body, a valve element is arranged in the valve body, a valve rod is installed at the upper end of the valve element, a threaded sleeve is installed at the upper end of the valve rod, the threaded sleeve is internally in threaded connection with the threaded rod, the lower end of the threaded rod is rotationally connected with the valve body, and a transmission gear is installed at the upper end of the threaded rod. A moving rod is arranged in the shell, a plurality of telescopic mechanisms are rotationally connected into the moving rod, the upper ends of the telescopic mechanisms penetrate through the shell and are provided with first bevel gears, and matched gears are installed at the lower ends of the telescopic mechanisms and meshed with the transmission gears. The corresponding matching gears are adjusted to move to be meshed with the transmission gear, then the rotating disc drives the threaded rod to rotate, the threaded rod drives the valve element to move through the threaded sleeve and the valve rod, and the matching gears with different diameters are matched with the transmission gear, so that the valve element can move at different distances; and the valve core can quickly move to a required position, so that the operation is convenient and quick.

Description

Technical Field

[0001] The utility model relates to the field of globe valves, in particular to a globe valve with adjustable force. Background Technique

[0002] The globe valve is a common pipeline control valve, used to switch fluid pipelines and adjust flow rate and pressure. When using the globe valve, the purpose of adjusting the pipeline pressure can be achieved by adjusting the opening degree of the valve. If it is necessary to reduce the pipeline pressure, the globe valve can be gradually closed to reduce the channel area of the fluid in the pipeline, so that the flow rate decreases, thereby achieving the purpose of reducing the pipeline pressure. On the contrary, if it is necessary to increase the pipeline pressure, the globe valve can be gradually opened to increase the channel area of the fluid in the pipeline, so that the flow rate increases, thereby achieving the purpose of increasing the pipeline pressure. In the prior art, the valve core of the globe valve cannot move a fixed distance. When moving the valve core to the required position, it is necessary for the staff to slowly rotate and adjust to avoid too fast or too slow liquid flow rate, which makes the adjustment speed slower and less convenient. Therefore, those skilled in the art provide a globe valve with adjustable force to solve the problems raised in the above background technique. Content of the Utility Model

[0003] To solve the above technical problems, the utility model provides a globe valve with adjustable force, which includes a valve body. A shell is installed at the upper end of the valve body. A valve core is arranged inside the valve body. A valve rod is installed at the upper end of the valve core. A threaded sleeve is installed at the upper end of the valve rod. A threaded rod is internally threaded with the threaded sleeve, and the lower end of the threaded rod is rotatably connected to the valve body. A transmission gear is installed at the upper end of the threaded rod;

[0004] A moving rod is arranged inside the shell. A plurality of telescopic mechanisms are rotatably connected inside the moving rod, and the upper ends of the telescopic mechanisms pass through the shell and are installed with bevel gear one. A mating gear is installed at the lower end of the telescopic mechanism, and the mating gear meshes with the transmission gear. A fixing rod is rotatably connected between the plurality of telescopic mechanisms, and the fixing rod is located above the shell;

[0005] The telescopic mechanism includes a first telescopic rod and a second telescopic rod. The second telescopic rod is slidably connected inside the first telescopic rod, and the lower end of the second telescopic rod passes through the first telescopic rod. Symmetric sliding grooves are formed on the inner wall of the first telescopic rod. Sliders are slidably connected inside the sliding grooves, and the sliders are fixedly connected to the second telescopic rod;

[0006] A connecting rod is installed at the upper end of the moving rod, and the upper end of the connecting rod passes through the shell and is installed with a fixing block. A limiting rod is slidably connected inside the fixing block. A plurality of clamping holes are formed inside the limiting rod. A through hole is formed inside the fixing block. A pulling block is slidably connected inside the through hole. One end of the pulling block is installed with a pull rod, and the other end of the pulling block is installed with a clamping block, and the clamping block corresponds to the position of the clamping hole. A spring is sleeved on the outer surface of the pull rod;

[0007] A rotating rod is arranged on the upper side of the fixed rod. A stopper is rotatably connected to the outer surface of the rotating rod, and the stopper is fixedly connected to the fixed rod. A number of second bevel gears are installed on the outer surface of the rotating rod, and the second bevel gears are meshed with the first bevel gear. A rotating disk is installed at the right end of the rotating rod. A rotating block is installed on the outer surface of the rotating rod. A blocking block is installed at the left end of the left stopper.

[0008] Preferably: the diameters of the several mating gears are different, and the several mating gears are arranged in ascending order of diameter.

[0009] Preferably: support blocks are symmetrically installed at the lower end of the fixed rod, and the support blocks are fixedly connected to the housing.

[0010] Preferably: the lower end of the limiting rod is fixedly connected to the housing, and a limiting block is installed at the upper end of the limiting rod.

[0011] Preferably: the pull rod passes through the fixed block and a pull ring is installed.

[0012] The technical effects and advantages of the present utility model:

[0013] First, the corresponding mating gear is adjusted to move and mesh with the transmission gear. Then, the position of the mating gear is fixed. Next, the mating gear is driven to rotate by the rotating disk. The mating gear and the transmission gear mesh to drive the threaded rod to rotate. The threaded rod drives the valve stem and the valve core to move a fixed distance through the threaded sleeve. Through the cooperation of the mating gears and the transmission gear with different diameters, the valve core can perform fixed movements at different distances, so that the valve core can quickly move to the required position, which is convenient and fast. Description of the Drawings

[0014] Figure 1 is the structural schematic diagram of the present application;

[0015] Figure 2 is the structural schematic diagram of the mating gear of the present application;

[0016] Figure 3 is the structural schematic diagram of the fixed block of the present application;

[0017] Figure 4 is the structural schematic diagram of the telescopic mechanism of the present application;

[0018] In the figure: 1, valve body; 2, housing; 3, valve stem; 4, threaded sleeve; 5, threaded rod; 6, transmission gear; 7, moving rod; 8, telescopic mechanism; 9, first telescopic rod; 10, second telescopic rod; 11, chute; 12, slider; 13, first bevel gear; 14, mating gear; 15, fixed block; 16, limiting rod; 17, card hole; 18, pulling block; 19, pull rod; 20, spring; 21, fixed rod; 22, rotating rod; 23, second bevel gear; 24, rotating disk; 25, rotating block; 26, blocking block. Detailed Embodiments

[0019] The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present utility model are given for purposes of illustration and description, and are not exhaustive or limit the present utility model to the disclosed form. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present utility model, and enable those of ordinary skill in the art to understand the present utility model and thus design various embodiments with various modifications suitable for specific purposes.

[0020] Please refer to Figures 1 to 4 , in this embodiment, a globe valve with adjustable force is provided, including a valve body 1. A housing 2 is installed at the upper end of the valve body 1. A valve core is arranged inside the valve body 1. A valve stem 3 is installed at the upper end of the valve core. A threaded sleeve 4 is installed at the upper end of the valve stem 3. A threaded rod 5 is internally threadedly connected to the threaded sleeve 4, and the lower end of the threaded rod 5 is rotatably connected to the valve body 1. A transmission gear 6 is installed at the upper end of the threaded rod 5. A moving rod 7 is arranged inside the housing 2. A plurality of telescopic mechanisms 8 are rotatably connected inside the moving rod 7, and the upper ends of the telescopic mechanisms 8 pass through the housing 2 and are installed with bevel gear one 13. A mating gear 14 is installed at the lower end of the telescopic mechanism 8, and the mating gear 14 meshes with the transmission gear 6. The diameters of the plurality of mating gears 14 are different, and the plurality of mating gears 14 are arranged in ascending order of diameter. A fixing rod 21 is rotatably connected among the plurality of telescopic mechanisms 8, and the fixing rod 21 is located above the housing 2. Support blocks are symmetrically installed at the lower end of the fixing rod 21, and the support blocks are fixedly connected to the housing 2. The telescopic mechanism 8 includes a first telescopic rod 9 and a second telescopic rod 10. The second telescopic rod 10 is slidably connected inside the first telescopic rod 9, and the lower end of the second telescopic rod 10 passes through the first telescopic rod 9. Slide grooves 11 are symmetrically formed on the inner wall of the first telescopic rod 9. Sliders 12 are slidably connected inside the slide grooves 11, and the sliders 12 are fixedly connected to the second telescopic rod 10. A connecting rod is installed at the upper end of the moving rod 7, and the upper end of the connecting rod passes through the housing 2 and is installed with a fixing block 15. A limiting rod 16 is slidably connected inside the fixing block 15. The lower end of the limiting rod 16 is fixedly connected to the housing 2. A limiting block is installed at the upper end of the limiting rod 16. A plurality of card holes 17 are formed inside the limiting rod 16. A through hole is formed inside the fixing block 15. A pull block 18 is slidably connected inside the through hole. One end of the pull block 18 is installed with a pull rod 19, and the pull rod 19 passes through the fixing block 15 and is installed with a pull ring. A clamping block is installed at the other end of the pull block 18, and the clamping block corresponds to the position of the card hole 17. A spring 20 is sleeved on the outer surface of the pull rod 19. A rotating rod 22 is arranged above the fixing rod 21. A blocking block is rotatably connected to the outer surface of the rotating rod 22, and the blocking block is fixedly connected to the fixing rod 21. A plurality of bevel gear two 23 are installed on the outer surface of the rotating rod 22, and the bevel gear two 23 meshes with the bevel gear one 13. A rotating disc 24 is installed at the right end of the rotating rod 22. A rotating block 25 is installed on the outer surface of the rotating rod 22. A blocking block 26 is installed at the left end of the left blocking block.

[0021] The working principle of the utility model is as follows: When it is necessary to control the rapid fixed-distance movement of the valve core, the pull ring and the pull rod 19 are used to pull the pull block 18 to move and compress the spring 20. The pull block 18 drives the latch to leave the latch hole 17. Then, the fixed block 15 is pushed to move outside the limit rod 16. The fixed block 15 drives the moving rod 7 to move through the connecting rod. The moving rod 7 drives the second telescopic rod 10 to move, causing the slider 12 to move in the sliding groove 11. The second telescopic rod 10 drives several mating gears 14 to move, so that the corresponding mating gears 14 move and mesh with the transmission gear 6;

[0022] After the adjustment is completed, release the pull ring. The spring 20 pushes the latch into the corresponding latch hole 17 to fix the position of the mating gear 14. Then, the rotating disk 24 drives the rotating rod 22 to rotate. The rotating rod 22 drives the first telescopic rod 9 to rotate through the engagement of the second bevel gear 23 and the first bevel gear 13. The first telescopic rod 9 drives the mating gear 14 to rotate through the sliding groove 11, the slider 12 and the second telescopic rod 10. The mating gear 14 meshes with the transmission gear 6 to drive the threaded rod 5 to rotate. The threaded rod 5 drives the valve core to move through the threaded sleeve 4 and the valve rod 3, so that the valve core moves quickly at a fixed distance, which is convenient and fast. The rotation of the rotating block 25 is blocked by the blocking block 26, so that the rotating disk 24 can only rotate at an equal distance.

[0023] Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those of ordinary skill in the art and related fields without creative efforts shall fall within the protection scope of the utility model. The structures, devices and operation methods not specifically described and explained in the utility model shall be implemented by conventional means in the art without special explanation and limitation.

Claims

1. A stop valve with adjustable force, comprising a valve body (1), characterized in that: The housing (2) is installed at the upper end of the valve body (1), a valve core is arranged inside the valve body (1), a valve stem (3) is installed at the upper end of the valve core, a threaded sleeve (4) is installed at the upper end of the valve stem (3), the threaded sleeve (4) is internally threadedly connected to a threaded rod (5), and the lower end of the threaded rod (5) is rotatably connected to the valve body (1), and a transmission gear (6) is installed at the upper end of the threaded rod (5); A moving rod (7) is arranged inside the housing (2), and the moving rod (7) is rotatably connected to a plurality of telescopic mechanisms (8), and the upper end of the telescopic mechanism (8) passes through the housing (2) and is installed with a bevel gear (13), and the lower end of the telescopic mechanism (8) is installed with a matching gear (14), and the matching gear (14) is meshed with the transmission gear (6), and the plurality of telescopic mechanisms (8) are rotatably connected to a fixed rod (21), and the fixed rod (21) is located on the upper side of the housing (2); The telescopic mechanism (8) comprises a telescopic rod 1 (9) and a telescopic rod 2 (10), wherein the telescopic rod 1 (9) is internally slidably connected to the telescopic rod 2 (10), and the lower end of the telescopic rod 2 (10) passes through the telescopic rod 1 (9), and a sliding groove (11) is symmetrically provided on the inner wall of the telescopic rod 1 (9), and a sliding block (12) is internally slidably connected to the sliding block (11), and the sliding block (12) is fixedly connected to the telescopic rod 2 (10); A connecting rod is installed at the upper end of the moving rod (7), and the upper end of the connecting rod passes through the shell (2) and is installed with a fixed block (15). The fixed block (15) is slidably connected to a limit rod (16). The limit rod (16) is provided with a plurality of clamping holes (17). A through hole is provided inside the fixed block (15). A pull block (18) is slidably connected inside the through hole. A pull rod (19) is installed at one end of the pull block (18). A clamping block is installed at the other end of the pull block (18), and the clamping block corresponds to the position of the clamping hole (17). A spring (20) is sleeved on the outer surface of the pull rod (19); A rotating rod (22) is arranged on the upper side of the fixed rod (21), the outer surface of the rotating rod (22) is rotatably connected to a stopper, and the stopper is fixedly connected to the fixed rod (21), a plurality of second bevel gears (23) are installed on the outer surface of the rotating rod (22), and the second bevel gears (23) are meshed with the first bevel gear (13), a rotating disk (24) is installed on the right end of the rotating rod (22), a rotating block (25) is installed on the outer surface of the rotating rod (22), and a stopper (26) is installed on the left end of the left stopper.

2. The force-adjustable stop valve according to claim 1, characterized in that: The diameters of the plurality of mating gears (14) are different, and the plurality of mating gears (14) are arranged from small to large in diameter.

3. The force-adjustable stop valve according to claim 1, characterized in that: A support block is symmetrically mounted on the lower end of the fixing rod (21), and the support block is fixedly connected to the housing (2).

4. The force-adjustable stop valve according to claim 1, characterized in that: The lower end of the limiting rod (16) is fixedly connected to the housing (2), and the upper end of the limiting rod (16) is installed with a limiting block.

5. The force-adjustable stop valve according to claim 1, characterized in that: The pull rod (19) passes through the fixed block (15) and is installed with a pull ring.

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