A valve hand wheel

Abstract

The utility model relates to the technical field of valve handwheels, and discloses a valve handwheel, including a handwheel body, a rotating shaft fixedly arranged on one end of the handwheel body, the rotating shaft rotatably arranged inside a sleeve, and a limiting component is arranged inside the sleeve. The utility model sets a limiting component, sets a limiting rod in the limiting component, and limits the rotating shaft by rotating the limiting rod in the limiting component, thereby preventing the rotating shaft from rotating to avoid accidental collision and causing the rotating shaft to deflect. By setting the limiting component in the sleeve, it is possible to prevent the limiting component from affecting the rotation of the handwheel, and at the same time, the sleeve is used to protect the limiting component to prevent the limiting component from being damaged by external influences, thereby affecting the limiting effect of the handwheel.

Description

Technical Field

[0001] The utility model relates to the technical field of valve hand wheels, in particular to a valve hand wheel. Background Art

[0002] Various types of valves are often needed in the fields of pipeline ventilation, sewage treatment, etc. Usually, hand wheels are installed on manual and electric valves to manually drive the valves.

[0003] The Chinese utility model patent with patent application number 202221057891.0 provides a handwheel for a valve. Through the cooperation between the set limit hole, connecting rod, L-shaped frame, sliding block, limit hook, limit frame and limit mechanism, the valve handwheel can be limited, thereby effectively preventing the valve from opening or closing due to the reverse rotation of the handwheel, and effectively preventing leakage and misoperation.

[0004] However, during the use of the above-mentioned device, it was found that the limit hook used for limiting the position was set on the handwheel. When the user turned the handwheel, the limit hook and the connecting rod connected to the limit hook were easy to affect the rotation. At the same time, the limit hook was easily damaged by external collisions or weather, affecting the limiting effect of the handwheel. Utility Model Content

[0005] The purpose of the utility model is to provide a valve hand wheel to solve the problem raised in the above background technology that when the user turns the hand wheel, the limit hook and the connecting rod connected to the limit hook are easy to affect the rotation, and the limit hook is easy to be damaged by external collision or weather, thereby affecting the limiting effect of the hand wheel.

[0006] To achieve the above purpose, the utility model provides the following technical solution: a valve handwheel, comprising a handwheel body, a rotating shaft is fixedly arranged on one end of the handwheel body, the rotating shaft is rotatably arranged inside a sleeve, and a limiting component is arranged inside the sleeve.

[0007] Preferably, a limiting ring is fixedly arranged on the rotating shaft, and a gear is arranged on the rotating shaft on one side of the limiting ring.

[0008] Preferably, the limiting assembly includes a worm, the worm is meshed with a worm wheel, a limiting rod is fixedly provided on the worm wheel, a limiting block is provided at one end of the limiting rod, and the limiting block on the limiting rod is adapted to the tooth groove of the gear.

[0009] Preferably, a rotation groove is provided inside the sleeve, the worm is rotationally connected to the rotation groove, a rotating rod is rotationally provided in the rotation groove, and the rotating rod passes through the middle of the worm wheel.

[0010] Preferably, one end of the worm is fixedly connected to a knob, both sides of the knob are arranged as arc-shaped notches, a rubber gasket is arranged on the worm, and the worm is rotatably connected to the outer wall of the sleeve through the rubber gasket.

[0011] Preferably, a protective sleeve is provided on the outer side of the sleeve, the outer side of the protective sleeve is spirally connected to the protective cover, the knob is arranged in the protective sleeve, the outer surface of the protective cover is provided with anti-slip grooves, the protective cover is rotatably connected with a connecting belt, and the connecting belt is rotatably arranged on the surface of the sleeve.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model can prevent the limit assembly from affecting the rotation of the hand wheel by arranging the limit assembly in the sleeve. At the same time, the sleeve is used to protect the limit assembly to prevent the limit assembly from being damaged by external influences, thereby affecting the limiting effect of the hand wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a diagram showing the overall structure of the utility model;

[0015] Figure 2 For this utility model Figure 1 The internal structure of the middle casing is shown in the figure;

[0016] Figure 3 For this utility model Figure 2 The structure of part A is shown in the figure.

[0017] In the figure: 1. handwheel body; 2. sleeve; 21. protective sleeve; 22. rotating groove; 3. rotating shaft; 31. limiting ring; 32. gear; 4. protective cover; 5. limiting assembly; 51. worm; 52. worm wheel; 53. limiting rod; 54. rotating rod; 55. knob; 56. rubber gasket; 6. connecting belt. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] Embodiment 1

[0020] See also Figure 1-Figure 3A valve hand wheel shown in the figure comprises a hand wheel body 1, a rotating shaft 3 is fixedly arranged on one end of the hand wheel body 1, the rotating shaft 3 is rotatably arranged inside a sleeve 2, and a limit position component 5 is arranged inside the sleeve 2;

[0021] A limit ring 31 is fixedly arranged on the rotating shaft 3, and a gear 32 is arranged on the rotating shaft 3 on one side of the limit ring 31;

[0022] The limiting assembly 5 includes a worm 51, which is meshed with a worm wheel 52. A limiting rod 53 is fixedly arranged on the worm wheel 52, and a limiting block is arranged at one end of the limiting rod 53. The limiting block on the limiting rod 53 is adapted to the tooth groove of the gear 32.

[0023] A rotating groove 22 is provided inside the sleeve 2, and the worm 51 is rotatably connected to the rotating groove 22. A rotating rod 54 is rotatably provided in the rotating groove 22, and the rotating rod 54 passes through the middle of the worm wheel 52;

[0024] One end of the worm 51 is fixedly connected to a knob 55, and both sides of the knob 55 are arranged to form arc-shaped notches. A rubber gasket 56 is arranged on the worm 51, and the worm 51 is rotatably connected to the outer wall of the sleeve 2 through the rubber gasket 56;

[0025] A protective sleeve 21 is arranged on the outer side of the sleeve 2, and the outer side of the protective sleeve 21 is spirally connected to the protective cover 4. The knob 55 is arranged in the protective sleeve 21. The outer surface of the protective cover 4 is provided with anti-slip grooves. The protective cover 4 is rotatably connected with a connecting belt 6, and the connecting belt 6 is rotatably arranged on the surface of the sleeve 2.

[0026] In this solution, under normal conditions, the limit block at one end of the limit rod 53 in the limit assembly 5 is set in the tooth groove of the gear 32, and the limit block is used to limit and fix the gear 32 to prevent the rotating shaft 3 from rotating;

[0027] When the staff needs to rotate the handwheel body 1, the staff needs to first rotate and remove the protective cover 4. The anti-skid pattern provided on the protective cover 4 can effectively increase the friction and prevent the staff from slipping when rotating. The protective cover 4 is connected to the sleeve 2 through the connecting belt 6, which can avoid the problem of being lost and difficult to find after the protective cover 4 is removed. After the protective cover 4 is removed, the staff rotates the knob 55 so that the knob 55 controls the worm 51 to rotate, and uses the meshing of the worm 51 and the worm wheel 52 to control the worm wheel 52 to drive the limit rod 53 to rotate along the rotating rod 54, so that the limit block at one end of the limit rod 53 can be disengaged from the tooth groove, so that the staff can rotate the handwheel body 1;

[0028] After the handwheel body 1 stops rotating, the staff member rotates the knob 55 in the opposite direction to drive the worm 51 to rotate in the opposite direction, thereby controlling the worm wheel 52 and the limit rod 53 to rotate in the opposite direction along the rotating rod 54, so that the limit block at one end of the limit rod 53 enters the tooth groove to limit the rotation of the gear 32 to prevent the gear 32 from rotating. After the adjustment is completed, the protective cover 4 is screwed on the protective sleeve 21 to prevent the knob 55 from being affected by the rotation. At the same time, the sleeve 2 is used to protect the limit assembly 5 to prevent the limit assembly 5 from being damaged by external influences, resulting in a decrease in the limiting effect of the limit assembly 5.

[0029] The rubber gasket 56 can increase the friction between the worm 51 and the sleeve 2, thereby preventing the worm 51 from rotating by itself. The limit ring 31 is rotatably arranged in the sleeve 2, which can help the shaft 3 to rotate stably inside the sleeve 2.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A valve hand wheel, characterized in that: include: A handwheel body (1), one end of which is fixedly provided with a rotating shaft (3), the rotating shaft (3) being rotatably arranged inside a sleeve (2), and a limiting component (5) being arranged inside the sleeve (2).

2. A valve hand wheel according to claim 1, characterized in that: A limit ring (31) is fixedly arranged on the rotating shaft (3), and a gear (32) is arranged on the rotating shaft (3) on one side of the limit ring (31).

3. A valve hand wheel according to claim 2, characterized in that: The limiting assembly (5) comprises a worm (51), the worm (51) meshing with a worm wheel (52), a limiting rod (53) fixedly arranged on the worm wheel (52), a limiting block arranged at one end of the limiting rod (53), and the limiting block on the limiting rod (53) matching with the tooth groove of the gear (32).

4. A valve hand wheel according to claim 3, characterized in that: A rotating groove (22) is arranged inside the sleeve (2), the worm (51) is rotatably connected to the rotating groove (22), a rotating rod (54) is rotatably arranged in the rotating groove (22), and the rotating rod (54) passes through the middle of the worm wheel (52).

5. A valve hand wheel according to claim 4, characterized in that: One end of the worm (51) is fixedly connected to a knob (55), and both sides of the knob (55) are arranged to form arc-shaped notches. A rubber gasket (56) is arranged on the worm (51), and the worm (51) is rotatably connected to the outer wall of the sleeve (2) via the rubber gasket (56).

6. A valve hand wheel according to claim 5, characterized in that: A protective sleeve (21) is arranged on the outer side of the sleeve (2), the outer side of the protective sleeve (21) is spirally connected to the protective cover (4), the knob (55) is arranged in the protective sleeve (21), the outer surface of the protective cover (4) is provided with anti-slip grooves, the protective cover (4) is rotatably connected to a connecting belt (6), and the connecting belt (6) is rotatably arranged on the surface of the sleeve (2).

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