Valve hand wheel capable of achieving electric or pneumatic opening and closing

Abstract

The utility model relates to the technical field of valve accessories, in particular to a valve hand wheel capable of being opened and closed electrically or pneumatically, which comprises a wheel disc, a wheel rim and two extension mechanisms, connecting rods distributed annularly are fixedly connected between the wheel disc and the wheel rim, a shaft pin hole is arranged at the bottom of the wheel disc, and the wheel disc and the wheel rim are fixedly connected through the shaft pin hole. Mounting cavities are formed in the opposite ends of the two connecting rods; the extension mechanism comprises an extension rod which is slidably connected to the interior of the mounting cavity, one end of the extension rod penetrates out of the mounting cavity, and one end of the extension rod is fixedly connected with a sealing plug in contact with the mounting cavity; the design that the extension rod is hidden in the mounting cavity and the sealing plug blocks the opening of the mounting cavity is adopted, so that the extension rod can be effectively prevented from being corroded by external moisture, corrosive substances and the like, the protection performance of the valve hand wheel can be improved, meanwhile, the size of the whole valve hand wheel can be reduced, and a user can conveniently transfer the valve hand wheel.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve accessories technical field, especially a valve hand wheel that can realize electric or pneumatic switch. BACKGROUND

[0002] Valve hand wheel is the important part for manually controlling the opening and closing of the valve in the valve system, and the valve hand wheel usually comprises a circular disc, the disc center is provided with an installation cavity, and the valve stem is connected through screws or bolts. The rotation of the hand wheel can drive the up and down movement of the valve stem, thereby controlling the opening and closing of the valve.

[0003] At present, a valve hand wheel (authorized publication number CN208281615U) is disclosed in Chinese patent, a hand wheel rod is arranged on the disc of the valve hand wheel, if the valve rod is screwed relatively tightly and the valve cannot be opened and closed through the hand wheel, the hand wheel rod is adjusted, and the hand wheel is transversely rotated by hands, so that the hand wheel bears greater force, thereby opening and closing the valve.

[0004] Although the above-mentioned device adopts the hand wheel rod to reduce the rotation burden of the valve hand wheel, however, the hand wheel rod is exposed on the surface of the valve hand wheel when rotating, when the device is used in a humid environment, the rotating connection between the hand wheel rod and the valve hand wheel is easy to rust due to water vapor, which increases the rotation burden of the hand wheel rod and increases the use difficulty of the staff.

[0005] Therefore, a valve hand wheel capable of realizing electric or pneumatic switch is proposed to solve the above-mentioned problems. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a valve hand wheel capable of realizing electric or pneumatic switch to solve the above-mentioned problems, and improving the low protection performance of the existing valve hand wheel capable of reducing the rotation difficulty of the staff.

[0007] The utility model realizes the above-mentioned purpose through the following technical scheme, a valve hand wheel capable of realizing electric or pneumatic switch, comprising: a disc, a rim and two extension mechanisms, the connecting rods in annular distribution are fixedly connected between the disc and the rim, the bottom of the disc is provided with a shaft pin hole, and the opposite ends of the two connecting rods are both provided with installation cavities.

[0008] Preferably, the extension mechanism comprises an extension rod slidingly connected in the installation cavity, one end of the extension rod penetrates out of the installation cavity, one end of the extension rod is fixedly connected with a sealing plug in contact with the installation cavity, and the diameter of the sealing plug is greater than the inner diameter of the installation cavity.

[0009] Preferably, the top of the disc is provided with a hexagonal groove.

[0010] Preferably, one end of the extension rod is fixedly connected to a lever, and one end of the lever extends through the sealing plug.

[0011] Preferably, the cross-sectional shape of the paddle is rectangular, and the corners of the paddle are rounded.

[0012] Preferably, the inner bottom wall of the connecting rod has a first threaded groove communicating with the mounting cavity, and the other end of the extension rod is fixedly connected to a threaded post that is threadedly connected to the first threaded groove.

[0013] Preferably, the vertical cross-sectional shape of the mounting cavity is convex, and the diameter of the threaded post is larger than the inner diameter of the mounting cavity.

[0014] Preferably, the inner bottom wall of the connecting rod is provided with a second threaded groove that communicates with the mounting cavity. The second threaded groove matches the first threaded groove and is located above the first threaded groove.

[0015] The beneficial effects of this utility model are:

[0016] 1. The design of concealing the extension rod inside the mounting cavity and sealing the opening of the mounting cavity with a sealing plug effectively prevents external moisture and corrosive substances from corroding the extension rod. This not only improves the protective performance of the valve handwheel but also reduces the overall size of the valve handwheel, making it easier for users to move the valve handwheel.

[0017] 2. When the user needs to adjust the valve stem using an electric or pneumatic switch, the user only needs to connect the electric or pneumatic switch to the hexagonal post and the hexagonal slot, and then drive the electric or pneumatic switch to rotate in the corresponding direction. The electric or pneumatic switch drives the hexagonal post to rotate, and the hexagonal post drives the wheel to rotate through the hexagonal slot. The wheel drives the valve stem to rotate accordingly through the shaft pin hole, so that the valve stem can be stably adjusted. This can effectively reduce the rotation burden on the user and reduce the difficulty of operation for the staff. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0020] Figure 3 This is an exploded view of the extension mechanism in this utility model;

[0021] Figure 4 for Figure 2 A magnified view of A in the middle.

[0022] In the diagram: 100, wheel; 110, shaft pin hole; 120, hexagonal groove; 200, wheel rim; 300, connecting rod; 310, mounting cavity; 320, first threaded groove; 330, second threaded groove; 400, extension mechanism; 410, extension rod; 420, sealing plug; 430, paddle; 440, threaded post. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] In practical implementation: such as Figures 1-4 As shown, a valve handwheel capable of electric or pneumatic switching includes: a wheel 100, a wheel rim 200, and two extension mechanisms 400. A connecting rod 300 arranged in a ring is fixedly connected between the wheel 100 and the wheel rim 200. A shaft pin hole 110 is provided at the bottom of the wheel 100, and mounting cavities 310 are provided at the opposite ends of the two connecting rods 300.

[0025] Before using the device, the user needs to securely lock the shaft pin hole 110 to the valve stem using threads, shaft pins, or welding, so that the wheel 100 is fixedly connected to the valve stem. When the user needs to adjust the valve stem through the wheel rim 200, the user only needs to rotate the wheel rim 200 in the corresponding direction. The wheel rim 200 drives the connecting rod 300 to rotate, and the connecting rod 300 drives the wheel 100 to rotate. The wheel rim 100 drives the valve stem to rotate accordingly through the shaft pin hole 110, so that the valve stem can be stably adjusted.

[0026] The top of the wheel 100 is provided with a hexagonal groove 120. When the user needs to adjust the valve stem by electric or pneumatic switch, the user needs to connect the hexagonal post that matches the hexagonal groove 120 to the output shaft of the electric or pneumatic switch through the existing connection method. Then the hexagonal post can be inserted into the hexagonal groove 120. At this time, the operator only needs to drive the electric or pneumatic switch to rotate in the corresponding direction. The electric or pneumatic switch drives the hexagonal post to rotate. The hexagonal post drives the wheel 100 to rotate through the hexagonal groove 120. The wheel 100 drives the valve stem to rotate accordingly through the shaft pin hole 110, so that the valve stem can be stably adjusted. This can effectively reduce the rotation burden of the user and reduce the difficulty of operation for the operator.

[0027] like Figure 2 , Figure 3 and Figure 4As shown, the extension mechanism 400 includes an extension rod 410 slidably connected inside the mounting cavity 310. One end of the extension rod 410 extends through the mounting cavity 310, and a sealing plug 420 is fixedly connected to the other end of the extension rod 410, which contacts the mounting cavity 310. The diameter of the sealing plug 420 is larger than the inner diameter of the mounting cavity 310. The inner bottom wall of the connecting rod 300 has a first threaded groove 320 communicating with the mounting cavity 310. The other end of the extension rod 410 is fixedly connected to a threaded post 440 threadedly connected to the first threaded groove 320. This can securely lock the extension rod 410 in the mounting cavity 310 when not in use, ensuring the sealing effect of the sealing plug 420 on the mounting cavity 310. The vertical cross-sectional shape of the mounting cavity 310 is convex, and the diameter of the threaded post 440 is larger than the inner diameter of the mounting cavity 310, which can prevent the extension rod 410 from being used. The extension rod 410 is completely pulled out of the mounting cavity 310 to prevent it from becoming loose or lost. The inner bottom wall of the connecting rod 300 has a second threaded groove 330 that communicates with the mounting cavity 310. The second threaded groove 330 matches the first threaded groove 320 and is located above the first threaded groove 320. This locks the extension rod 410, which extends out of the mounting cavity 310, in the corresponding position, thereby improving the stability of the user driving the extension rod 410. One end of the extension rod 410 is fixedly connected to a paddle 430, and one end of the paddle 430 passes through the sealing plug 420. This reduces the difficulty for the user to pull out and rotate the extension rod 410. The paddle 430 has a rectangular cross-section and rounded corners. This reduces the probability of the paddle 430 scratching the user's hand and increases the safety factor for the user to adjust the paddle 430.

[0028] Working principle: When the user needs to manually rotate the valve stem with force, the user drives the extension rod 410 to rotate via the lever 430. The extension rod 410 drives the threaded post 440 to unscrew the first threaded groove 320. Then, the user can easily move the extension rod 410 upward along the mounting cavity 310 via the lever 430. When the threaded post 440 is aligned with the second threaded groove 330, the user can rotate the lever 430 accordingly. The lever 430, through the extension rod 410, drives the threaded post 440 to thread into the second threaded groove 330. This enables... By locking the extension rod 410 in the corresponding position within the mounting cavity 310, the user can increase the rotational lever arm of the valve stem using the extension rod 410, thereby reducing the difficulty for the user to rotate the valve stem. Furthermore, the design of concealing the extension rod 410 inside the mounting cavity 310 and sealing the opening of the mounting cavity 310 with the sealing plug 420 effectively prevents external moisture and corrosive substances from corroding the extension rod 410. This not only improves the protective performance of the valve handwheel but also reduces the overall size of the valve handwheel, making it easier for the user to move the valve handwheel.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A valve handwheel capable of electric or pneumatic switching, characterized in that, include: A wheel (100) and a wheel rim (200) are fixedly connected between the wheel (100) and the wheel rim (200) by a connecting rod (300) arranged in a ring. The bottom of the wheel (100) is provided with a shaft pin hole (110), and the opposite ends of the two connecting rods (300) are provided with mounting cavities (310). Two extension mechanisms (400) are provided. Each extension mechanism (400) includes an extension rod (410) that is slidably connected inside the mounting cavity (310). One end of the extension rod (410) extends through the mounting cavity (310), and a sealing plug (420) that contacts the mounting cavity (310) is fixedly connected to the other end of the extension rod (410). The diameter of the sealing plug (420) is larger than the inner diameter of the mounting cavity (310).

2. A valve handwheel capable of electric or pneumatic switching according to claim 1, characterized in that: The top of the wheel (100) is provided with a hexagonal groove (120).

3. A valve handwheel capable of electric or pneumatic switching according to claim 1, characterized in that: One end of the extension rod (410) is fixedly connected to a lever (430), and one end of the lever (430) extends through the sealing plug (420).

4. A valve handwheel capable of electric or pneumatic switching according to claim 3, characterized in that: The cross-sectional shape of the paddle (430) is rectangular, and the corners of the paddle (430) are rounded.

5. A valve handwheel capable of electric or pneumatic switching according to claim 1, characterized in that: The inner bottom wall of the connecting rod (300) is provided with a first threaded groove (320) that communicates with the mounting cavity (310), and the other end of the extension rod (410) is fixedly connected with a threaded post (440) that is threadedly connected to the first threaded groove (320).

6. A valve handwheel capable of electric or pneumatic switching according to claim 5, characterized in that: The vertical cross-sectional shape of the mounting cavity (310) is convex, and the diameter of the threaded column (440) is larger than the inner diameter of the mounting cavity (310).

7. A valve handwheel capable of electric or pneumatic switching according to claim 5, characterized in that: The inner bottom wall of the connecting rod (300) is provided with a second threaded groove (330) that communicates with the mounting cavity (310). The second threaded groove (330) matches the first threaded groove (320) and is located above the first threaded groove (320).

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