An adjustable round face valve handwheel

Abstract

The utility model discloses a circular plane valve hand wheel of adjustable, apply in valve hand wheel technical field, including center seat, the surface welding of center seat has fixed cylinder, the inside rotation of fixed cylinder is connected with the thread rod, the surface thread bushing of thread rod has the square telescopic cylinder of fixed cylinder sliding connection, the one end welding of square telescopic cylinder is away from center seat arc hand wheel, the one end screwing of thread rod is in the center seat inside first bevel gear, the bottom rotation of center seat inner chamber is connected with the second bevel gear of first bevel gear meshing. When needing to use hand wheel to drive the valve rod rotation of circular plane valve, can synchronous drive arc hand wheel in the surface of center seat and open outward and expand the outer diameter, and it is convenient to rotate. Meanwhile when not using, still can gather together and reduce the outer diameter to arc hand wheel each other, thereby still convenient hand wheel is stored up, reduces the space occupied.

Description

Technical Field

[0001] This utility model belongs to the field of valve handwheel technology, and specifically relates to an adjustable circular planar valve handwheel. Background Technology

[0002] A circular flat valve is a type of valve whose sealing surface is a flat circle, and which opens and closes by moving up and down in a direction perpendicular to the fluid. For example, a gate valve is the most common type of circular flat valve.

[0003] Currently, Chinese utility model patent CN213332696U discloses a handwheel structure for a valve. Existing circular flat valve handwheels come in several types, including those with a square top on the valve stem and a matching hole in the center to transmit torque to the valve stem and rotate it. However, for the handwheel to easily rotate the valve stem, its outer diameter must be large to transmit greater torque and thus reduce effort. But a large outer diameter also requires ample space. For some large-diameter handwheels, the outer diameter cannot be adjusted when not in use, making daily storage inconvenient and affecting practicality. Utility Model Content

[0004] The purpose of this utility model is to provide an adjustable circular flat valve handwheel, the advantage of which is that the outer diameter of the handwheel can be adjusted, so as to adjust it according to space constraints, making it convenient for daily use and storage.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: an adjustable circular planar valve handwheel, including a central seat, a fixed cylinder welded to the surface of the central seat, a threaded rod rotatably connected inside the fixed cylinder, a square telescopic cylinder slidably connected to the fixed cylinder and threadedly sleeved on the surface of the threaded rod, an arc-shaped handwheel welded to the end of the square telescopic cylinder away from the central seat, a first bevel gear threadedly connected to the end of the threaded rod inside the central seat, and a second bevel gear meshing with the first bevel gear rotatably connected to the bottom of the inner cavity of the central seat.

[0006] The above technical solution allows for the following: when the handwheel is needed to rotate the valve stem of a circular flat valve, it simultaneously drives the arc-shaped handwheel to expand its outer diameter on the surface of the central seat, facilitating rotation. When not in use, the arc-shaped handwheels can be folded together to reduce their outer diameter, making them easy to store and saving space. By utilizing the sliding connection between the square rod at the bottom of the adjusting handle and the first square groove inside the second bevel gear, the second bevel gear can be rotated by turning the adjusting handle after the removable cover plate is fixed to the top of the central seat. This also facilitates the removal of the removable cover plate from the top of the central seat, allowing for easy access to the interior for repairing damaged parts and improving practicality.

[0007] The present invention is further configured such that a detachable cover plate is bolted to the top of the central seat.

[0008] The above technical solution allows for easy disassembly of the removable cover plate, which opens the interior of the center seat to facilitate the repair and replacement of internal parts.

[0009] The present invention is further configured such that an adjusting handle is rotatably connected through the interior of the detachable cover plate, a first square groove is provided on the top of the second bevel gear, and a square rod that is slidably inserted into the first square groove is welded to one end of the adjusting handle inside the center seat.

[0010] Using the above technical solution: Since the adjusting handle can rotate freely inside the removable cover, even if the square rod and the removable cover are misaligned, the adjusting handle can be rotated independently for adjustment.

[0011] The present invention is further provided that the outer surface of the arc-shaped handwheel is provided with anti-slip stripes.

[0012] The above technical solution increases the friction on the surface of the arc-shaped handwheel, thereby improving rotational stability.

[0013] The present invention is further provided that a limiting slider that is slidably connected to the fixed cylinder is welded to the end of the square telescopic cylinder surface away from the arc-shaped handwheel.

[0014] The above technical solution improves the stability of the square telescopic cylinder sliding inside the fixed cylinder, while limiting the sliding distance of the square telescopic cylinder to prevent it from sliding out of the fixed cylinder.

[0015] The present invention is further provided in that a second square groove is provided at the bottom of the center seat, and a fastening bolt that is threadedly connected to the center seat is provided on one side inside the second square groove.

[0016] The purpose of the above technical solution is to allow the center seat to be placed on the square top of the valve stem, thereby transmitting the torque of the handwheel to the valve stem. Simultaneously, fastening bolts are provided to secure the square end of the valve stem inside the second square groove, preventing it from automatically detaching from the square end of the valve stem.

[0017] In summary, this utility model has the following beneficial effects: 1. When the handwheel is needed to rotate the stem of a circular flat valve, the arc-shaped handwheel can be simultaneously driven to open outward on the surface of the center seat to expand its outer diameter, facilitating rotation. When not in use, the arc-shaped handwheels can be folded together to reduce their outer diameter, making it easy to store and reducing space usage. 2. By using the square rod at the bottom of the adjusting handle to slide into the first square groove inside the second bevel gear, the second bevel gear can be rotated by turning the adjusting handle after the detachable cover plate is fixed to the top of the center seat. This also facilitates the removal of the detachable cover plate from the top of the center seat, making it easier to open the center seat for maintenance of damaged parts and improving practicality. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the overall structure of this utility model; Figure 3 This is a partial structural cross-sectional view of the present invention.

[0019] Reference numerals: 1. Center seat; 2. Fixed cylinder; 3. Threaded rod; 4. Square telescopic cylinder; 5. Arc-shaped handwheel; 6. First bevel gear; 7. Second bevel gear; 8. Adjusting handle; 9. Square rod; 10. First square groove; 11. Removable cover plate; 12. Anti-slip stripes; 13. Limiting slider; 14. Second square groove; 15. Fastening bolt. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the accompanying drawings.

[0021] Example 1: refer to Figure 1 , Figure 2 , Figure 3An adjustable circular planar valve handwheel includes a central seat 1, a fixed cylinder 2 welded to the surface of the central seat 1, a threaded rod 3 rotatably connected inside the fixed cylinder 2, a square telescopic cylinder 4 slidably connected to the fixed cylinder 2 and threadedly sleeved on the surface of the threaded rod 3, and an arc-shaped handwheel 5 welded to the end of the square telescopic cylinder 4 away from the central seat 1. A first bevel gear 6 is threadedly connected to the end of the threaded rod 3 inside the central seat 1, and a second bevel gear 7 meshing with the first bevel gear 6 is rotatably connected to the bottom of the inner cavity of the central seat 1. When the handwheel is needed to rotate the valve stem of the circular planar valve, the arc-shaped handwheel 5 can be simultaneously driven to open outward on the surface of the central seat 1 to expand its outer diameter, facilitating rotation. When not in use, the arc-shaped handwheels 5 can be folded together to reduce their outer diameter, making it easy to store and reducing space occupation. By using the square rod 9 at the bottom of the adjusting handle 8 to slide into the first square groove 10 inside the second bevel gear 7, after the removable cover plate 11 is fixed to the top of the central seat 1, the second bevel gear 7 can be rotated by rotating the adjusting handle 8. It also facilitates the removal of the removable cover plate 11 from the top of the center seat 1, making it easier to open the interior of the center seat 1 to repair damaged parts and improve its practicality.

[0022] refer to Figure 1 The top of the center seat 1 is bolted with a removable cover plate 11. The removable cover plate 11 facilitates the removal of the center seat 1 to open the interior and allow for the maintenance and replacement of internal parts.

[0023] refer to Figure 2 , Figure 3 An adjusting handle 8 is rotatably connected through the interior of the removable cover plate 11. A first square groove 10 is provided on the top of the second bevel gear 7. A square rod 9, which is slidably inserted into the first square groove 10, is welded to one end of the adjusting handle 8 inside the center seat 1. Since the adjusting handle 8 can rotate freely inside the removable cover plate 11, even if the square rod 9 and the removable cover plate 11 are misaligned, the adjusting handle 8 can be rotated independently for adjustment.

[0024] refer to Figure 1 , Figure 2 The outer surface of the arc-shaped handwheel 5 is provided with anti-slip stripes 12. This increases the friction on the surface of the arc-shaped handwheel 5 and improves rotational stability.

[0025] refer to Figure 2 A limiting slider 13, which is slidably connected to the fixed cylinder 2, is welded to the end of the square telescopic cylinder 4 away from the arc-shaped handwheel 5. This improves the stability of the square telescopic cylinder 4 sliding inside the fixed cylinder 2 and limits the sliding distance of the square telescopic cylinder 4 to prevent it from sliding out of the fixed cylinder 2.

[0026] refer to Figure 3The bottom of the center seat 1 has a second square groove 14, and a fastening bolt 15, which is threaded through the center seat 1, is provided on one side inside the second square groove 14. The purpose of the second square groove 14 is to allow the center seat 1 to be placed on the square end of the valve stem, thereby transmitting the torque of the handwheel to the valve stem. At the same time, the fastening bolt 15 is provided to fasten the square end of the valve stem inside the second square groove 14, preventing it from automatically falling off from the square end of the valve stem.

[0027] Brief description of usage: First, place the center seat 1 on top of the circular flat valve, fixing the center seat 1 to the square end of the valve stem. Then, rotate the adjusting handle 8, using the square rod 9 and the first square groove 10 to engage with each other, driving the second bevel gear 7 to rotate inside the center seat 1 and mesh with the first bevel gear 6, thereby synchronously driving multiple threaded rods 3 to rotate inside the fixed cylinder 2. Then, the threaded rods 3 engage with the square telescopic cylinder 4, causing the square telescopic cylinder 4 to slide outward inside the fixed cylinder 2, supporting multiple arc-shaped handwheels 5 to open outward and expand their outer diameter, thus facilitating the transmission torque to rotate the valve stem and control the opening or closing of the circular flat valve. When the handwheels are finished, the adjusting handle 8 can be rotated in the opposite direction, causing the threaded rods 3 to engage with the square telescopic cylinder 4 in the opposite direction, causing the square telescopic cylinder 4 to pull the arc-shaped handwheels 5 together, reducing their outer diameter, and then releasing them from the top of the valve stem for easy storage.

[0028] Meanwhile, the detachable cover plate 11 is slidably inserted into the first square groove 10 inside the second bevel gear 7 by adjusting the square rod 9 at the bottom of the crank handle 8. After the detachable cover plate 11 is fixed to the top of the center seat 1, the second bevel gear 7 can be rotated by rotating the crank handle 8. This also makes it easy to remove the detachable cover plate 11 from the top of the center seat 1, making it convenient to open the interior of the center seat 1 to repair damaged parts.

[0029] It should be noted that parts have a lifespan and can be replaced during regular maintenance when they no longer meet performance requirements. Deterioration in performance due to prolonged use of parts is not a design defect of this application.

[0030] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. An adjustable circular planar valve handwheel, comprising a center seat (1), characterized in that: A fixed cylinder (2) is welded to the surface of the center seat (1). A threaded rod (3) is rotatably connected inside the fixed cylinder (2). A square telescopic cylinder (4) is threadedly sleeved on the surface of the threaded rod (3) and slidably connected to the fixed cylinder (2). An arc-shaped handwheel (5) is welded to the end of the square telescopic cylinder (4) away from the center seat (1). A first bevel gear (6) is threadedly connected to the end of the threaded rod (3) inside the center seat (1). A second bevel gear (7) that meshes with the first bevel gear (6) is rotatably connected to the bottom of the inner cavity of the center seat (1).

2. The adjustable circular planar valve handwheel according to claim 1, characterized in that: The top of the center seat (1) is bolted to a removable cover plate (11).

3. An adjustable circular planar valve handwheel according to claim 2, characterized in that: The interior of the detachable cover plate (11) is rotatably connected to an adjusting handle (8), and the top of the second bevel gear (7) is provided with a first square groove (10). One end of the adjusting handle (8) located inside the center seat (1) is welded with a square rod (9) that slides into the first square groove (10).

4. An adjustable circular planar valve handwheel according to claim 1, characterized in that: The outer surface of the arc-shaped handwheel (5) is provided with anti-slip stripes (12).

5. An adjustable circular planar valve handwheel according to claim 1, characterized in that: The square telescopic cylinder (4) has a limiting slider (13) welded to the end of its surface away from the arc-shaped handwheel (5), which is slidably connected to the fixed cylinder (2).

6. An adjustable circular planar valve handwheel according to claim 1, characterized in that: The bottom of the center seat (1) is provided with a second square groove (14), and a fastening bolt (15) that is threaded through the center seat (1) is provided on one side inside the second square groove (14).

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