Adjustable labor-saving switch valve device

Abstract

The present invention provides an adjustable, labor-saving valve switch device, comprising: a main body, a transmission mechanism, a handle component, and an adjustable chuck; hinged rods are hinged at both ends of the main body and connected to a pipeline via the hinged rods; a mounting bracket is provided on one side of the main body; the transmission mechanism comprises a driving shaft, a transmission assembly and a handle fastening wheel provided on the driving shaft, and the driving shaft is rotatably provided on the mounting bracket; the handle component comprises a main handle rod and a sliding adjustment assembly; the sliding adjustment assembly is sleeved on the handle fastening wheel and slidably connected to the driving shaft; one end of the adjustable chuck passes through the main body and is connected to the transmission assembly. The device rotates the handle component and utilizes the transmission mechanism to drive the adjustable chuck to rotate, thereby achieving rotation of the valve handwheel, making operation more labor-saving. The adjustable chuck can also be used to adjust valve handwheels of different sizes, thereby securing the valve handwheel to the adjustable chuck and avoiding the problem of slippage caused by F-type wrenches.

Description

Technical Field

[0001] The present invention relates to the field of valve switch equipment, and in particular to an adjustable labor-saving switch valve device. Background Art

[0002] Valves are widely used in chemical production to control fluid flow. On-site operators need to frequently open, close, and adjust some manual valves. Currently, the primary auxiliary device used for valve operation is the F-type wrench. However, due to limitations in valve installation location and height, valve opening and closing operations present challenges such as limited operating space, time-consuming and labor-intensive operations, and certain safety risks. Furthermore, the F-type wrench is cumbersome to operate, requiring frequent changes in the clamping position, making it prone to valve slippage. Furthermore, the F-type wrench concentrates force on a single point on the valve handwheel, causing significant damage to the valve handwheel during opening and closing operations. For horizontally mounted valves, opening and closing the valve can only be performed by rotating it horizontally, which is inconvenient.

[0003] To address these issues, the traditional approach is to replace manual valves with electric valves, using motors to operate the valves, saving time and effort. However, electric valves are complex, prone to failure, expensive, and difficult to maintain. Therefore, there is a need for an adjustable, labor-saving valve opening and closing device. Summary of the Invention

[0004] In order to solve the above technical problems, the purpose of the present invention is to provide an adjustable and labor-saving valve switching device, which can make the valve switching operation more labor-saving, avoid the slipping problem caused by the F-type wrench when assisting in switching the valve, and at the same time protect the valve handwheel by dispersing the force on the valve handwheel. It can adapt to valves of different sizes for safe and quick adjustment operations.

[0005] To achieve the above objectives, the technical solutions of the present invention are as follows.

[0006] An adjustable labor-saving switch valve device, comprising:

[0007] The main body of the machine has hinged support rods at both ends and is connected to the pipeline through the hinge support rods; a mounting bracket is provided on one side of the main body of the machine;

[0008] The transmission mechanism includes a driving shaft, a transmission assembly and a handle fastening wheel arranged on the driving shaft, and the driving shaft is rotatably arranged on the mounting bracket;

[0009] The handle component includes a handle main rod and a sliding adjustment component, which are fixedly connected to each other; the sliding adjustment component is sleeved on the handle fastening wheel and is slidably connected to the driving shaft;

[0010] An adjustable chuck is rotatably arranged on the other side of the machine body; one end of the adjustable chuck passes through the machine body and is connected to the transmission assembly, and the transmission assembly can drive the adjustable chuck to rotate.

[0011] Furthermore, a plurality of fastening protrusions are provided on the circumference of the handle fastening wheel, and a fastening groove is provided between two adjacent fastening protrusions.

[0012] Furthermore, the sliding adjustment assembly includes:

[0013] Two slide rail clamps are provided on both sides of the handle fastening wheel; each of the slide rail clamps is provided with a strip through slot; the driving shaft passes through the strip through slot and is slidably connected to the strip through slot;

[0014] Two first clamping members are arranged at both ends of the slide rail clamping plate; both ends of each first clamping member are detachably connected to one end of the two slide rail clamping plates; one of the first clamping members is clamped in the fastening groove corresponding to it.

[0015] Furthermore, a sliding groove is provided between the two first clamping members, and the length of the sliding groove is greater than the outer diameter of the handle fastening wheel.

[0016] Furthermore, the transmission assembly includes:

[0017] A driving gear is provided at one end of the driving shaft;

[0018] The driven gear is rotatably arranged on the main body of the machine; the driving gear is arranged on one side of the driven gear and is meshed with the driven gear;

[0019] One end of the adjustable chuck passes through the machine body and is fixedly connected to the central axis of the driven gear.

[0020] Furthermore, there are two mounting brackets, which are respectively arranged on both sides of the driven gear; there are two driving shafts, two handle fastening wheels, two driving gears and two handle components, which are respectively arranged on the corresponding mounting brackets.

[0021] Furthermore, the adjustable chuck comprises:

[0022] A chuck body is provided on a side of the machine body away from the transmission mechanism; a plurality of gripping rods are provided on the side edge of the chuck body;

[0023] A driven shaft, one end of which is fixedly connected to the chuck body, and the other end of which passes through the machine body and is fixedly connected to the central axis of the driven gear;

[0024] The clamping components are arranged on the corresponding grab bars, and the valve handwheels are clamped on a plurality of the clamping components.

[0025] Furthermore, each of the grab bars has a sliding chamber, and one side of each sliding chamber is provided with a sliding opening; each of the clamping assemblies includes:

[0026] A slide rod is slidably disposed in a corresponding slide cavity;

[0027] An adjusting hand wheel is detachably mounted on the corresponding gripping rod and is pressed against the sliding rod;

[0028] A sliding grab bar is slidably disposed on the corresponding sliding opening and is fixedly connected to the sliding bar;

[0029] The sliding card plate is slidably arranged on the corresponding sliding rod; the sliding gripping rod and the sliding card plate are combined to form an adjustment slot; the valve hand wheel is clamped on a plurality of the adjustment slots;

[0030] One end of the second clamping member passes through the sliding clamping plate and is detachably connected to the sliding grab bar.

[0031] Furthermore, one end of the driven shaft passes through the chuck body, and the other end of the driven shaft passes through the central axis of the driven gear. A valve stem lifting hole is provided on the axis of the driven shaft.

[0032] Furthermore, the mounting bracket includes two bracket uprights, and an accommodating groove is provided between the two bracket uprights. Each of the bracket uprights is provided with a mounting hole, and both ends of the driving shaft pass through the corresponding mounting holes and are rotatably connected to the mounting holes.

[0033] Beneficial effects of the present invention:

[0034] 1. The present invention achieves the purpose of valve opening and closing operation by rotating the handle component and utilizing the transmission mechanism to drive the adjustable chuck to rotate and then realize the rotation of the valve handwheel.

[0035] 2. The handle assembly of the present invention is detachable. When operated separately, the left handle assembly can be rotated clockwise to close the valve, and the right handle assembly can be rotated clockwise to open the valve. This operation is a vertical rotation operation from high to low, which is in line with operating habits. Vertical rotation from top to bottom is more labor-saving and energy-saving. When the handle assemblies on both sides are installed simultaneously, two people can jointly open and close the valve at different positions. At the same time, the handle assembly adopts a slide rail structure. The first clamping member at the front end of the handle is the same size as the fastening groove on the handle fastening wheel. After being locked together, the handle assembly is rotated to an appropriate angle, and the first clamping member at the front end of the handle assembly is separated from the fastening groove by the slide rail. After the handle assembly is rotated to a certain angle alone, the first clamping member at the front end of the handle assembly is re-locked with the handle fastening wheel by the slide rail. Repeating the above steps can achieve the purpose of continuously opening and closing the valve, achieving continuous and rapid operation, and avoiding the problem of frequent changes in the clamping position when operating a traditional F-type wrench.

[0036] 3. When the adjustable chuck of the present invention is in use, the length of the sliding gripping rod is adjusted according to the outer diameter of the valve handwheel. After adjustment, the adjusting handwheel is used to fix it. The distance between the sliding clamping plate and the sliding gripping rod is adjusted according to the rim size of the valve handwheel. After adjustment, the second clamping piece is used to fix it, so that the valve handwheel and the adjustable chuck are fixed, avoiding the problem of the traditional F-type wrench easily falling off during operation. The five-claw design can also change the force of the valve switching operation from one point to five points, making the force more uniform and causing less damage to the valve.

[0037] 4. The present invention reserves a valve stem lifting hole on the main body for lifting the valve stem during gate valve opening and closing operations. A hinged support rod is used to fix the main body, so that when the stop valve is opened and closed, the main body and the valve handwheel are lifted and lowered simultaneously.

[0038] 5. The present invention can make the opening and closing of manual valves achieve the functions of saving labor, being adjustable, continuous, safe and protecting the valves. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 Schematic diagram of the structure of the device according to the embodiment of the present invention.

[0040] Figure 2 yes Figure 1 Schematic diagram of the structure of part A.

[0041] Figure 3 It is a schematic diagram of the assembly structure of the device and pipeline valve according to an embodiment of the present invention.

[0042] Figure 4 It is a structural schematic diagram of the main body of the machine body in an embodiment of the present invention.

[0043] Figure 5 2 is a schematic structural diagram of a transmission mechanism in an embodiment of the present invention.

[0044] Figure 6 2 is a schematic structural diagram of a handle component in an embodiment of the present invention.

[0045] Figure 7 2 is a schematic structural diagram of an adjustable chuck in an embodiment of the present invention.

[0046] Figure 8 It is a structural schematic diagram of the sliding grab bar, the sliding clamping plate and the second clamping member in an embodiment of the present invention.

[0047] In the figure, 1, body; 11, lifting opening; 2, hinge support rod; 3, mounting bracket; 31, bracket vertical plate; 311, mounting hole; 32, receiving groove;

[0048] 4. Transmission mechanism; 41. Driving shaft; 42. Grip fastening wheel; 421. Fastening protrusion; 422. Fastening groove; 43. Driving gear; 44. Driven gear; 45. Driving shaft bearing; 46. Bearing end cover; 47. Driving shaft bearing fixing bolt; 48. Axial positioning spring;

[0049] 5. Handle component; 51. Handle main rod; 52. Slide rail clamping plate; 521. Strip-shaped through groove; 53. First clamping member; 54. Sliding groove body;

[0050] 6. Adjustable chuck; 61. Chuck body; 62. Chuck support rod; 621. Sliding chamber; 622. Sliding opening; 63. Driven shaft; 64. Sliding rod; 65. Adjusting handwheel; 66. Sliding gripper; 67. Sliding clamp; 68. Second clamping member; 69. Valve stem lifting hole;

[0051] 7. Pipe clamp; 71. Clamping bolt. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0053] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0054] See also Figures 1 to 8 , an adjustable labor-saving switch valve device, including: a body 1, a hinge support rod 2, a mounting bracket 3, a transmission mechanism 4, a handle component 5 and an adjustable chuck 6.

[0055] See also Figures 3 and 4Both ends of the main body 1 are hingedly connected to hinged rods 2, which are connected to the pipeline through the hinged rods 2. Here, the hinged rods 2 are composed of two hinged rods. Specifically, one end of the hinged rod 2 is hingedly connected to one end of the main body 1, and the other end of the hinged rod 2 is provided with a pipeline clamp 7, which is hingedly connected to the side wall of the pipeline clamp 7. The pipeline clamp 7 is provided with a clamping bolt 71. During use, the pipeline clamp 7 is placed on the valve pipeline, and the clamping bolt is tightened to clamp the valve pipeline through the pipeline clamp 7.

[0056] See also Figure 4 A mounting bracket 3 is provided on one side of the main body 1; there are two mounting brackets 3, and the main body 1 has a lifting opening 11; the lifting opening 11 is located between the two mounting brackets 3. The lifting opening 11 is mainly used to install the driven gear 43 and forms a valve stem lifting hole 16 with the driven shaft 63. Specifically, the mounting bracket 3 includes two bracket uprights 31, with an accommodating groove 32 defined between the two bracket uprights 31. Each bracket upright 31 is provided with a mounting hole 311. Both ends of the driving shaft 41 pass through the corresponding mounting holes 311 and are rotatably connected to the mounting holes 311.

[0057] See also Figures 1 to 2 and Figure 5 The transmission mechanism 4 includes a driving shaft 41, a transmission assembly disposed on the driving shaft 41, and a grip fastening wheel 42. The driving shaft 41 is rotatably disposed on the mounting bracket 3; for example, both ends of the driving shaft 41 are inserted through corresponding mounting holes 311 and are rotatably connected to the corresponding mounting holes 311. The grip fastening wheel 42 is fixedly mounted on the driving shaft 41, wherein a plurality of fastening protrusions 421 are disposed on the circumference of the grip fastening wheel 42, and a fastening groove 422 is defined between two adjacent fastening protrusions 421. In this embodiment, the grip fastening wheel 42 has a pentagonal groove design. The fastening groove 422 is consistent in size with the first clamping member at the front end of the grip component, allowing for mutual clamping.

[0058] The transmission assembly includes a driving gear 43 and a driven gear 44. The driving gear 43 is fixedly mounted at one end of the driving shaft 41. The driven gear 44 is rotatably mounted on the main body 1. For example, the central axis of the driven gear 44 is rotatably mounted within the lifting opening 11. The driving gear 43 is mounted on one side of the driven gear 44 and meshes with it. One end of the adjustable chuck 6 passes through the main body 1 and is fixedly connected to the central axis of the driven gear 44. In this embodiment, there are two mounting brackets 3, one on each side of the driven gear 44. The driving shaft 41, the handle fastening wheel 42, the driving gear 43, and the handle component 5 are all mounted on their corresponding mounting brackets 3. Both the driving gear and the driven gear are straight bevel gears, with the driving gear being a small gear with 12 teeth and the driven gear being a large gear with 20 teeth, thereby achieving a labor-saving effect during transmission.

[0059] Further preferably, an active shaft bearing 45 and a bearing end cover 46 are respectively provided on both sides of each bracket upright plate 31, and the active shaft bearing 45 and the bearing end cover 46 are fixedly connected to their corresponding bracket upright plates 31 through active shaft bearing fixing bolts 47; an axial positioning retaining spring 48 is provided on one side of the active shaft bearing 45, and the axial positioning retaining spring 48 is provided on one side of the handle fastening wheel 42 and is located on the active shaft 41.

[0060] Depend on Figure 2 As shown, the right side of the driving shaft 41 is axially positioned by the bearing end cap 46 and cannot move to the right, but can be moved and withdrawn to the left. Therefore, an axial positioning retaining spring 48 is provided. For example, the driving shaft 41 (30 mm in diameter) is provided with a retaining spring groove with a diameter of 28 mm and a groove width of 1.2 mm. The inner diameter of the axial positioning retaining spring 48 is 27 mm, and the retaining spring width is 1 mm. The axial positioning retaining spring 48 is stuck on the driving shaft 41 in a state of misalignment and clamping. Here, because the axial positioning retaining spring 48 is on the right side of the left bearing end cap 46, and the bearing end cap 46 is completely positioned with the mounting bracket 3 of the main body 1, the driving shaft 41 is also axially positioned with the main body 1, preventing the driving shaft from moving and withdrawing from the left. Therefore, through the cooperation of the axial positioning retaining spring 48 and the bearing end cap 46, the axial positioning function of the driving shaft 41 can be achieved.

[0061] See also Figure 1 and Figure 6 The handle assembly 5 comprises a main handle rod 51 and a sliding adjustment assembly, which are fixedly connected to each other. The sliding adjustment assembly is mounted on the handle fastening wheel 42 and is slidably connected to the driving shaft 41. In this embodiment, the rear end of the main handle rod 51 adopts a knurled design to enhance anti-slip properties and is provided with an opening for convenient hanging. Specifically, the sliding adjustment assembly includes two slide rail clamps 52 and two first clamping members 53.

[0062] Two slide rail clamps 52 are arranged in parallel on both sides of the handle fastening wheel 42; each slide rail clamp 52 is provided with a strip through groove 521; the driving shaft 41 passes through the strip through groove 521 and is slidably connected to the strip through groove 521; here, the strip through groove 521 is long and its main function is to make the driving shaft 41 slide along the strip through groove 521.

[0063] Two first clamping members 53 are provided at both ends of the slide rail clip 52; both ends of each first clamping member 53 are detachably connected to one end of the two slide rail clips 52; one of the first clamping members 53 is clamped into its corresponding fastening groove 422, and the other first clamping member 53 is capable of fixedly connecting the handle main rod 51 to one end of the two slide rail clips 52. Specifically, a sliding groove 54 is provided between the two first clamping members 53, and the length of the sliding groove 54 is greater than the outer diameter of the handle fastening wheel 42. Here, the two first clamping members 53 are capable of fixing the two slide rail clips 52 on both sides of the handle fastening wheel 42; the dimension between two adjacent slide rail clips 52 matches the dimension of the fastening groove 422. Because the front end of the handle component 5 and the fastening groove 422 on the handle fastening wheel 42 are of the same size, they can be clamped to each other, thereby driving the driving shaft to rotate by rotating the handle component 5.

[0064] In this embodiment, a transmission mechanism consisting of three spur bevel gears is used to achieve a labor-saving effect. The handle components are detachable. When operated separately, the left handle component can be rotated clockwise to close the valve, while the right handle component can be rotated clockwise to open the valve. This operation is a vertical rotation from high to low, which is in line with operating habits. Vertical rotation from top to bottom is even more labor-saving. When the handle components on both sides are installed simultaneously, two people can jointly open and close the valve from different positions.

[0065] At the same time, the handle component adopts a slide rail structure, and the first clamping piece at the front end of the handle is consistent in size with the fastening groove on the grip fastening wheel. After being clamped to each other, the handle component is rotated at an appropriate angle, and the first clamping piece at the front end of the handle component is separated from the fastening groove through the slide rail. After the handle component is rotated alone at a certain angle, the first clamping piece at the front end of the handle component is re-clamped with the grip fastening wheel through the slide rail. Repeating the above steps can achieve the purpose of continuously opening and closing the valve, with continuous and fast operation, avoiding the problem of frequent changes in the clamping position during operation of traditional F-type wrenches.

[0066] See also Figure 1 and Figures 7 and 8 The adjustable chuck 6 is rotatably disposed on the other side of the main body 1. One end of the adjustable chuck 6 passes through the main body 1 and is connected to the driven gear 44 on the transmission assembly, which can drive the adjustable chuck 6 to rotate. Specifically, the adjustable chuck 6 includes a chuck body 61, a plurality of chuck support rods 62, a driven shaft 63, and a clamping assembly.

[0067] A chuck body 61 is positioned on the side of the main body 1 away from the transmission mechanism 4. Multiple chuck support rods 62 are fixedly mounted on the side edges of the chuck body 61. In this embodiment, there are five chuck support rods 62, but this number can be adjusted to suit the specific size of the valve handwheel. The chuck body 61 and the five chuck support rods 62 form a circumferentially distributed, five-grip adjustable chuck.

[0068] One end of the driven shaft 63 is fixedly connected to the chuck body 61, while the other end passes through the main body 1 and is fixedly connected to the central axis of the driven gear 44. Specifically, one end of the driven shaft 63 passes through the chuck body 61, while the other end passes through the central axis of the driven gear 44. A valve stem lifting hole 69 is provided at the axis of the driven shaft 63. In this embodiment, the valve stem lifting hole 69 is reserved in the adjustable chuck 6 and the main body 1 for raising and lowering the valve stem during valve opening and closing operations.

[0069] The clamping assemblies are arranged on the corresponding chuck support rods 62, and the valve handwheel is clamped on multiple clamping assemblies. The number of clamping assemblies is consistent with the number of chuck support rods. In this embodiment, the number of clamping assemblies is five.

[0070] Further preferably, each chuck support rod 62 has a sliding chamber 621, and a sliding opening 622 is provided on one side of each sliding chamber 621; each clamping assembly includes: a sliding rod 64, an adjusting hand wheel 65, a sliding grab rod 66, a sliding clamping plate 67 and a second clamping member 68.

[0071] The slide bar 64 is slidably disposed within the corresponding slide chamber 621; the adjustment hand wheel 65 is detachably disposed on the corresponding chuck support rod 62 and is pressed against the slide bar 64; for example, a threaded hole is provided at the top of the end of the chuck support rod 62 near the chuck body 61, and one end of the adjustment hand wheel 65 is threadedly connected to the threaded hole. As the adjustment hand wheel 65 is screwed into the threaded hole, it is finally pressed against the slide bar 64, thereby fixing the slide bar 64. At the same time, as the adjustment hand wheel 65 is screwed out of the threaded hole, the position of the slide bar 64 in the slide chamber 621 can be easily adjusted, and the adjustment hand wheel 65 is screwed in to fix it.

[0072] A sliding gripper 66 is slidably mounted on the corresponding sliding opening 622 and fixedly connected to the sliding rod 64. A sliding clamp 67 is slidably mounted on the corresponding sliding rod 64. For example, a long, limited slot is provided in the portion of the sliding rod 64 exposed to the sliding opening. One end of the sliding clamp 67 is mounted within the limited slot and can slide along the slot. The sliding gripper 66 and the sliding clamp 67 together form adjustment slots. The valve handwheel is mounted on multiple adjustment slots.

[0073] One end of the second clamping member 68 passes through the sliding clamping plate 67 and is detachably connected to the sliding grip 66. In this embodiment, both the first and second clamping members are composed of a bolt and an umbrella-shaped clamping bolt handwheel. The bolts and the umbrella-shaped clamping bolt handwheel are threadedly connected to secure the sliding grip 66 to the sliding clamping plate 67. Both the sliding grip 66 and the sliding clamping plate 67 have elongated fixing holes, and the second clamping member 68 passes through these two fixing holes to secure the valve handwheel.

[0074] During operation, the sliding lever 66 is adjusted according to the outer diameter of the valve handwheel. Once adjusted, it is secured using the adjusting handwheel 65. The distance between the sliding clamping plate 67 and the sliding lever 66 is then adjusted according to the size of the valve handwheel rim. Once adjusted, the second clamping member 68 is used to secure the valve handwheel to the adjustable chuck. Because the adjustable chuck 6 features a circumferentially distributed five-lever design, the five sliding levers 66 are evenly distributed around the circumference, evenly distributing the force on the valve handwheel during operation.

[0075] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An adjustable labor-saving switch valve device, characterized in that: include: A machine body (1) is hingedly connected to hinged rods (2) at both ends and is connected to a pipeline via the hinged rods (2); a mounting bracket (3) is provided on one side of the machine body (1); A transmission mechanism (4) comprising a driving shaft (41), a transmission assembly and a handle fastening wheel (42) arranged on the driving shaft (41), wherein the driving shaft (41) is rotatably arranged on the mounting bracket (3); The grip component (5) comprises a grip main rod (51) and a sliding adjustment component, which are fixedly connected to each other; the sliding adjustment component is sleeved on the grip fastening wheel (42) and is slidably connected to the driving shaft (41); An adjustable chuck (6) is rotatably arranged on the other side of the machine body (1) and is used to clamp and fix the valve handwheel; the transmission assembly is capable of driving the adjustable chuck (6) to rotate; A plurality of fastening protrusions (421) are provided on the circumference of the handle fastening wheel (42), and a fastening groove (422) is provided between two adjacent fastening protrusions (421); The sliding adjustment assembly includes: Two slide rail clamps (52) are provided on both sides of the handle fastening wheel (42); each of the slide rail clamps (52) is provided with a strip-shaped through slot (521); the driving shaft (41) passes through the strip-shaped through slot (521) and is slidably connected to the strip-shaped through slot (521); Two first clamping members (53) are provided at both ends of the slide rail clamping plate (52); both ends of each first clamping member (53) are detachably connected to one end of the two slide rail clamping plates (52); one of the first clamping members (53) is clamped in a fastening groove (422) corresponding thereto; The transmission assembly comprises: A driving gear (43) is provided at one end of the driving shaft (41); The driven gear (44) is rotatably arranged on the main body (1); the driving gear (43) is arranged on one side of the driven gear (44) and is meshed with the driven gear (44); one end of the adjustable chuck (6) passes through the main body (1) and is fixedly connected to the central axis of the driven gear (44); The handle component (5) adopts a slide rail structure, and the first clamping member (53) at the front end of the handle component (5) is consistent in size with the fastening groove (422) on the handle fastening wheel (42). After being clamped to each other, the handle component (5) is rotated at a suitable angle, and the first clamping member (53) at the front end of the handle component (5) is separated from the fastening groove (422) through the slide rail. After the handle component (5) is rotated alone at a certain angle, the first clamping member (53) at the front end of the handle component (5) is clamped to the handle fastening wheel (42) again through the slide rail. Repeating the above steps can achieve continuous switching of the valve.

2. The adjustable labor-saving switch valve device according to claim 1, characterized in that: A sliding groove body (54) is provided between the two first clamping members (53), and the length of the sliding groove body (54) is greater than the outer diameter of the handle fastening wheel (42).

3. The adjustable labor-saving switch valve device according to claim 1, characterized in that: There are two mounting brackets (3), which are respectively arranged on both sides of the driven gear (44); The driving shaft (41), the handle fastening wheel (42), the driving gear (43) and the handle component (5) are each provided in two pieces and are respectively arranged on the corresponding mounting brackets (3).

4. The adjustable labor-saving switch valve device according to claim 1, characterized in that: The adjustable chuck (6) comprises: A chuck body (61) is arranged on a side of the machine body (1) away from the transmission mechanism (4); a plurality of chuck support rods (62) are arranged on the side edge of the chuck body (61); A driven shaft (63), one end of which is fixedly connected to the chuck body (61), and the other end of which passes through the machine body (1) and is fixedly connected to the central axis of the driven gear (44); The clamping assembly is arranged on a corresponding chuck support rod (62), and the valve handwheel is clamped on a plurality of the clamping assemblies.

5. The adjustable labor-saving switch valve device according to claim 4, characterized in that: Each of the chuck support rods (62) has a sliding chamber (621) therein, and a sliding opening (622) is provided on one side of each of the sliding chambers (621); each of the clamping components comprises: A slide rod (64) is slidably disposed in a corresponding slide chamber (621); An adjusting hand wheel (65) is detachably mounted on a corresponding chuck support rod (62) and is pressed against the slide rod (64); A sliding grab bar (66) is slidably disposed on the corresponding sliding opening (622) and fixedly connected to the sliding bar (64); A sliding card plate (67) is slidably arranged on a corresponding sliding rod (64); the sliding gripping rod (66) and the sliding card plate (67) are combined to form an adjustment slot; the valve hand wheel is clamped on a plurality of the adjustment slots; One end of the second clamping member (68) passes through the sliding clamping plate (67) and is detachably connected to the sliding grab bar (66).

6. The adjustable labor-saving switch valve device according to claim 5, characterized in that: One end of the driven shaft (63) passes through the chuck body (61), and the other end of the driven shaft (63) passes through the central axis of the driven gear (44). A valve stem lifting hole (69) is provided on the axis of the driven shaft (63).

7. The adjustable labor-saving switch valve device according to claim 1, characterized in that: The mounting bracket (3) comprises two bracket uprights (31), an accommodating groove (32) is provided between the two bracket uprights (31), and each bracket upright (31) is provided with a mounting hole (311). Both ends of the driving shaft (41) pass through the corresponding mounting holes (311) and are rotatably connected to the mounting holes (311).

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