Valve handwheel for easy installation

Abstract

The utility model belongs to valve technical field relates to a valve hand wheel convenient to installation, including hand wheel body and the base that is connected in the middle of hand wheel body, the top of valve stem is equipped with connecting column, be equipped with the mounting hole that is matched with connecting column on base, the base is covered on connecting column, the circumference of connecting column is equipped with spline, the inner wall of mounting hole is equipped with the keyway that is matched with spline, be equipped with a plurality of movable grooves on connecting column, movable groove is connected with movable block, one end of movable block projects outside movable groove, the projecting end of movable block abuts against the upper end surface of base, thereby makes hand wheel and valve stem fixed, be equipped with the drive assembly for controlling movable block along movable groove sliding on connecting column, can control movable block projects and retracts through drive assembly, thereby realizes the installation and disassembly of hand wheel fast, avoided the drawbacks of through nut fixed in prior art.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a valve handwheel that is easy to install. Background Technology

[0002] Handwheels are common valve transmission components. Currently, the handwheel is installed by passing the top of the square valve stem through a pre-drilled square hole on the handwheel and tightening a nut to fix the handwheel to the valve stem. This installation method is rather cumbersome, and the nut is prone to loosening after long-term use. Therefore, this utility model proposes a valve handwheel that is easier to install. Utility Model Content

[0003] The main purpose of this utility model is to provide a valve handwheel that is easy to install, which solves the problems of complicated installation and easy detachment caused by fixing the handwheel to the valve stem with nuts in the prior art.

[0004] This utility model achieves the above-mentioned objective through the following technical solution: a valve handwheel that is easy to install, connected to the valve stem of a valve, including a handwheel body and a base connected in the middle of the handwheel body. The top end of the valve stem is provided with a connecting post, and the base is provided with a mounting hole that matches the connecting post. The base is fitted onto the connecting post. The peripheral surface of the connecting post is provided with a spline, and the inner wall of the mounting hole is provided with a keyway that matches the spline. The connecting post is provided with multiple movable slots, and a movable block is connected in each movable slot. One end of the movable block extends out of the movable slot, and the extended end of the movable block abuts against the upper end surface of the base. The connecting post is provided with a drive assembly for controlling the movable block to slide along the movable slot.

[0005] Preferably, the connecting post has an inner cavity, and the bottom of the inner cavity has a guide hole. The driving assembly includes a vertical rod movably connected in the guide hole. The vertical rod is divided into a guide section, a connecting section, and a pressing section, with the diameter increasing from bottom to top. The upper end face of the connecting post has a through hole for the pressing section to extend out. The bottom end of the guide section is connected to a first spring, which is in a compressed state. The division between the guide section and the connecting section is a tapered transition. The movable groove communicates with the inner cavity. The other end of the movable block abuts against the circumference of the guide section. A second spring is sleeved on the portion of the movable block located in the inner cavity. A stop block is provided on the movable block. The second spring is compressed between the stop block and the inner wall of the inner cavity.

[0006] Preferably, the extended end of the movable block has an upward slope.

[0007] Preferably, the handwheel body includes a triangular plate, the triangular plate is an upwardly arched arc, the triangular plate has a triangular through hole in the middle position, the corners and sides of the triangular plate are all concave arc surfaces, and the middle position of the inner side of the triangular plate has a connecting part that connects to the base.

[0008] The beneficial effects of this utility model are as follows: the connecting column has a spline on its circumferential surface, and the inner wall of the mounting hole has a keyway that matches the spline, thereby ensuring that the handwheel can transmit torque to the valve stem. The protruding end of the movable block abuts against the upper end face of the base, thereby fixing the handwheel to the valve stem. The extension and retraction of the movable block can be controlled by the drive assembly, thereby quickly realizing the installation and disassembly of the handwheel and avoiding the drawbacks of fixing with nuts in the prior art. Attached Figure Description

[0009] Figure 1 This is a diagram showing the arrangement of a valve handwheel during operation, designed for ease of installation in this embodiment.

[0010] Figure 2 This is a schematic diagram of the handwheel body structure.

[0011] The numbers in the image represent:

[0012] 1. Handwheel body; 2. Base; 3. Valve stem; 4. Connecting column; 5. Mounting hole; 6. Movable groove; 7. Movable block; 8. Guide hole; 9. Vertical rod; 10. Guide section; 11. Connecting section; 12. Pressing section; 13. First spring; 14. Conical transition; 15. Second spring; 16. Stop block; 17. Connecting part. Detailed Implementation

[0013] The present invention will be further described in detail below with reference to specific embodiments.

[0014] Example:

[0015] like Figure 1 and Figure 2 As shown, this utility model discloses an easy-to-install valve handwheel, comprising a handwheel body 1 and a base 2 connected in the middle of the handwheel body 1. The valve stem 3 has a connecting post 4 at its top end. The base has a mounting hole 5 that matches the connecting post 4. The base is fitted onto the connecting post 4. The connecting post 4 has a spline on its circumferential surface. The inner wall of the mounting hole 5 has a keyway that matches the spline. The connecting post 4 has multiple movable grooves 6. Movable blocks 7 are connected in the movable grooves 6. One end of the movable block 7 extends out of the movable groove 6. The extended end of the movable block 7 abuts against the upper end surface of the base. The connecting post 4 has a drive assembly for controlling the movable block 7 to slide along the movable groove 6.

[0016] The connecting post 4 has an inner cavity, and the bottom of the inner cavity has a guide hole 8. The driving assembly includes a vertical rod 9 movably connected in the guide hole 8. The vertical rod 9 is divided into a guide section 10, a connecting section 11, and a pressing section 12, with the diameter increasing from bottom to top. The upper end face of the connecting post 4 has a through hole for the pressing section 12 to extend out. The bottom end of the guide section 10 is connected to a first spring 13, which is in a compressed state. The division between the guide section 10 and the connecting section 11 is set as a tapered transition 14. The movable groove 6 communicates with the inner cavity. The other end of the movable block 7 is hemispherical and abuts against the circumference of the guide section 10. A second spring 15 is sleeved on the part of the movable block 7 located in the inner cavity. A stop block 16 is provided on the movable block 7. The second spring 15 is compressed between the stop block 16 and the inner wall of the inner cavity.

[0017] The extended end of the movable block 7 has an upward slope.

[0018] The handwheel body 1 includes a triangular plate, which is an upward-arched arc. A triangular through hole is provided in the middle of the triangular plate. The corners and sides of the triangular plate are both concave arc surfaces. A connecting part 17 for connecting to the base is provided in the middle of the inner side of the triangular plate.

[0019] The handwheel installation process is as follows: Place the handwheel to be installed on the top of the valve stem 3, press down on the vertical rod 9, and move one end of the movable block 7 from the guide section 10 to the connecting section 11. During this process, the movable block 7 retracts into the inner cavity under the elastic force of the second spring 15. Press down on the handwheel so that the movable block 7 passes through the base. After the handwheel is in place, release the vertical rod 9. The vertical rod 9 returns to its original position under the elastic force of the first spring 13. The other end of the movable block 7 abuts against the guide section 10 again. The movable block 7 extends outward and blocks the upper end face of the base, thereby fixing the handwheel to the valve stem 3.

[0020] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A valve handwheel that is easy to install, mounted on the valve stem, characterized in that: The device includes a handwheel body and a base connected in the middle of the handwheel body. The top of the valve stem is provided with a connecting post. The base is provided with a mounting hole that matches the connecting post. The base is fitted onto the connecting post. The circumferential surface of the connecting post is provided with a spline. The inner wall of the mounting hole is provided with a keyway that matches the spline. The connecting post is provided with multiple movable slots. A movable block is connected in each movable slot. One end of the movable block extends out of the movable slot. The extended end of the movable block abuts against the upper end surface of the base. The connecting post is provided with a drive assembly for controlling the movable block to slide along the movable slot.

2. The valve handwheel that is easy to install according to claim 1, characterized in that: The connecting column has an inner cavity, and the bottom of the inner cavity has a guide hole. The driving assembly includes a vertical rod movably connected in the guide hole. The vertical rod is divided into a guide section, a connecting section, and a pressing section, with the diameter increasing from bottom to top. The upper end face of the connecting column has a through hole for the pressing section to extend out. The bottom end of the guide section is connected to a first spring, which is in a compressed state. The division between the guide section and the connecting section is a tapered transition. The movable groove communicates with the inner cavity. The other end of the movable block abuts against the circumference of the guide section. A second spring is sleeved on the portion of the movable block located in the inner cavity. A stop is provided on the movable block, and the second spring is compressed between the stop and the inner wall of the inner cavity.

3. A valve handwheel that is easy to install according to claim 2, characterized in that: The extended end of the movable block has an upward slope.

4. A valve handwheel that is easy to install according to claim 1, characterized in that: The handwheel body includes a triangular plate, which is an upward-arched arc. A triangular through hole is provided in the middle of the triangular plate. The corners and sides of the triangular plate are concave arc surfaces. A connecting part for connection with the base is provided in the middle of the inner side of the triangular plate.

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