An adjustable valve drive structure

Abstract

An adjustable valve transmission structure, including a valve body, the valve body is equipped with the worm box connected with it, further including the transmission box installed on the worm box, and the arc-shaped cover is rotatably installed on the transmission box, the cone gear ring is installed in the transmission box and coaxially arranged with the worm box, and the driving rod is rotatably installed on the arc-shaped cover and arranged with the axis of the cone gear ring not coaxially, the bevel gear is coaxially installed on the driving rod and engaged with the cone gear ring, further including a limiting mechanism, the limiting mechanism can limit the rotation of the arc-shaped cover, solve the current valve in the narrow space in the application of the valve rod position fixed on the installation and use caused by the trouble, improve the effect of valve use and the flexibility of valve use, adapt to more use environment.

Description

Technical Field

[0001] This invention relates to the field of worm gearbox equipment technology, and in particular to an adjustable valve transmission structure. Background Technology

[0002] Valves are control components in fluid transport systems, possessing functions such as shut-off, regulation, flow guidance, backflow prevention, pressure stabilization, diversion, and overflow / pressure relief. They are widely used in devices transporting compressible or incompressible media. From the simplest shut-off valves to the various valves used in highly complex automated control systems, their types and specifications are quite diverse. Valves can be used to control the flow of various types of fluids, including air, water, steam, various corrosive media, slurry, oil, liquid metals, and radioactive media. Valves are also classified according to their material, such as cast iron valves, cast steel valves, stainless steel valves, chrome-molybdenum steel valves, chrome-molybdenum-vanadium steel valves, duplex steel valves, plastic valves, and custom-made non-standard valves. The valve worm gear box is the driving device for opening or closing the valve and is an essential and crucial component of the valve.

[0003] Meanwhile, valves are used in a variety of environments. When valves are used in pipelines, especially underground pipelines, the space is limited. During installation, the valve stem and worm gear are connected by a key. However, some problems often arise during installation. The installation position between the worm gear box and the valve body is fixed, but the limited space requires the installation of a large number of valves, or the spacing between pipelines does not allow the valve stem to be oriented in a certain direction, causing problems. This can lead to the valve not being able to be installed properly, or the user being unable to easily apply force to open and close the valve, making it difficult to meet the usage requirements. Summary of the Invention

[0004] In view of the above situation and to overcome the defects of the prior art, the purpose of this invention is to provide an adjustable valve transmission structure, which solves the problems caused by the fixed position of the valve stem when the valve is used in a confined space, thus improving the performance of the valve.

[0005] The solution is an adjustable valve transmission structure, including a valve body with a worm gear box connected thereto, a transmission box mounted on the worm gear box, and an arc-shaped cover rotatably mounted on the transmission box. A bevel gear ring coaxially aligned with the worm gear box is installed inside the transmission box, and a drive rod non-collinearly aligned with the axis of the bevel gear ring is rotatably mounted on the arc-shaped cover. A bevel gear meshing with the bevel gear ring is coaxially mounted on the drive rod. The structure also includes a limiting mechanism that limits the rotation of the arc-shaped cover, and a rotating handle is mounted on one end of the drive rod.

[0006] Furthermore, the edge of the arc-shaped cover is provided with an annular top plate arranged coaxially with the arc-shaped cover, and a groove is formed between the top plate and the arc-shaped cover, and the edge of the transmission box is placed inside the groove by a sliding seal.

[0007] Furthermore, the top plate is detachably mounted on the arc-shaped cover by bolts.

[0008] Furthermore, the invention includes a limiting gear ring fixed to the inner side of the top plate, and the limiting mechanism includes limiting teeth mounted on the transmission box for limiting the rotation of the arc-shaped cover.

[0009] Furthermore, the limiting mechanism of the present invention also includes a pull rod, and the limiting teeth are fixed on the pull rod, the pull rod being slidably mounted on the transmission box.

[0010] Furthermore, the limiting mechanism of the present invention also includes a top spring fitted on the pull rod, the top spring being capable of driving the limiting teeth to slide in the direction of the arc-shaped cover.

[0011] Furthermore, the invention also includes a rotating component, which allows the position of the rotating handle relative to the respective covers to remain unchanged when the arc-shaped cover is rotated.

[0012] Furthermore, the present invention includes a sleeve on the rotating handle, a slide rod coaxially fixed to the drive rod and slidably installed inside the sleeve, a connecting gear coaxially fixed to the slide rod, and a connecting gear ring cooperating with the connecting gear inside the sleeve.

[0013] Furthermore, the invention includes a spring fitted on the drive rod to drive the rotating handle to move toward the arc-shaped cover.

[0014] The beneficial effects of this invention are:

[0015] 1. When installing in complex and dense pipe networks, rotating the arc-shaped cover changes the relative angle between the arc-shaped cover and the transmission box, thereby changing the position of the rotating handle. This allows the valve to be used normally even in confined spaces, improving the flexibility of valve application.

[0016] 2. Furthermore, after adjustment, workers can still clearly observe the position of the valve, reducing errors in valve judgment and thus reducing the possibility of workers misoperating the valve.

[0017] 3. It can quickly and easily fix the rotating handle after the angle changes, ensuring that the arc-shaped cover 5 will not rotate arbitrarily during use. At the same time, it facilitates the installation, maintenance and replacement of its internal components by workers, reducing the cost of manufacturing and using the device and improving efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall frontal axis of the present invention.

[0019] Figure 2 This is a schematic diagram of the overall back axial side structure of the present invention.

[0020] Figure 3 This is a top view of the overall structure of the present invention.

[0021] Figure 4 This is a schematic diagram of the overall side structure of the present invention.

[0022] Figure 5 This is a schematic diagram of the structure of the bevel gear ring and bevel gear shaft side of the present invention.

[0023] Figure 6 This is a schematic diagram of the internal axial structure of the arc-shaped cover of the present invention.

[0024] Figure 7 This is a partially enlarged structural schematic diagram of the limiting mechanism of the present invention. Detailed Implementation

[0025] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0026] Depend on Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6An adjustable valve transmission structure is provided, including a valve body 1, a worm gear box 2 connected to the valve body 1, and the valve body 1 is assembled and installed on a pipeline during installation. The valve body 1 is opened and closed by driving the worm in the worm gear box 2. The structure also includes a transmission box 6 mounted on the worm gear box 2, and an arc-shaped cover 5 rotatably mounted on the transmission box 6. A bevel gear ring 15 coaxial with the worm is installed inside the transmission box 6, and a drive rod 7 non-collinear with the axis of the bevel gear ring 15 is rotatably mounted on the arc-shaped cover 5. A bevel gear 16 coaxially mounted on the drive rod 7 meshes with the bevel gear ring 15. A rotating handle 5 is mounted on one end of the drive rod 7. However, in the installation of complex and dense pipeline networks, the small gaps between the pipes may prevent the rotating handle 5 from being installed in the intended position, or the rotating handle 5 may become misaligned with other pipes after installation. If the spacing between the valve body 1 and the transmission box 6 is too small, the user will be unable to apply force to the rotating handle 5, thus failing to open or close the valve and rendering it ineffective. In this case, the arc-shaped cover 5 is rotated, and a drive rod 7 is rotatably mounted on the arc-shaped cover 5. When the installation position of the valve body 1 is difficult to meet the user's needs, rotating the arc-shaped cover 5 will change the relative angle between the arc-shaped cover 5 and the transmission box 6, thereby changing the position of the rotating handle 5. Through the meshing of the bevel gear ring 15 and the bevel gear 16, the bevel gear 16 and the bevel gear ring 15 can be ensured to mesh regardless of the direction in which the arc-shaped cover 5 is rotated. This allows the valve to be opened and closed by rotating the handle 5. The rotating handle 5 can be rotated in different directions according to the user's needs, meeting the requirements for use in complex and dense pipe networks and improving the flexibility of valve application.

[0027] Based on the above embodiments, and according to the accompanying drawings, it can be seen that a limiting mechanism is also included. This limiting mechanism can limit the rotation of the arc-shaped cover 5. An annular top plate 10, coaxially aligned with the arc-shaped cover 5, is provided at the edge of the arc-shaped cover 5. A groove is formed between the top plate 10 and the arc-shaped cover 5, and the edge of the transmission box 6 is slidably sealed within the groove. The top plate 10 is detachably mounted on the arc-shaped cover 5 by bolts. A limiting toothed ring 11 is fixed to the inner side of the top plate 10. The limiting mechanism includes limiting teeth 9 mounted on the transmission box 6 to limit the rotation of the arc-shaped cover 5. The limiting mechanism also includes a pull rod 17, with the limiting teeth 9 fixed to the pull rod 17. The pull rod 17 is slidably mounted on the transmission box 6. The limiting mechanism also includes a top spring 18 sleeved on the pull rod 17, which can drive the limiting teeth 9 to slide towards the arc-shaped cover 5. When the above valve structure is in use... There are times when the rotating handle 5 cannot be fixed. To improve its performance, a limiting mechanism is set up to ensure that the rotating handle 5 is fixed. When the curved cover 5 is rotated to the required angle, the worker manually pulls the lever 17, which compresses the top spring 18 and disengages the limiting tooth 9 from the limiting tooth ring 11, thus allowing the limiting tooth ring 11 to rotate freely and the rotating handle 5 to rotate freely. When the required angle is reached, the worker releases the lever 17, which is pushed by the top spring 18 to engage the limiting tooth 9 into the tooth gap of the limiting tooth ring 11, thus limiting the position of the curved cover 5 and ensuring that the curved cover 5 does not rotate arbitrarily during use. At the same time, the detachable top plate 10 on the curved cover 5 allows the worker to easily remove the curved cover 5 to install or repair or replace its internal components.

[0028] Based on the above two embodiments, and according to the accompanying drawings, it can be seen that a rotating assembly is also included. This rotating assembly ensures that the position of the rotating handle 5 relative to the cover remains unchanged when the arc-shaped cover 5 rotates. A sleeve 4 is provided on the rotating handle 5. A sliding rod 12, coaxially fixed to the drive rod 7 and slidably installed inside the sleeve 4, is mounted on the drive rod 7. A connecting gear 14 is coaxially fixed to the sliding rod 12. A connecting gear ring 13, which mates with the connecting gear 14, is provided inside the sleeve 4. A spring 8 is fitted on the drive rod 7 to drive the rotating handle 5 towards the arc-shaped cover 5. In actual use, a scale is often engraved on the surface of the connection between the drive rod 7 and the arc-shaped cover 5 to allow for opening and closing the valve at different angles. However, when the position of the rotating handle 5 is adjusted, the drive rod 7 rotates due to the meshing of the bevel gear 16 and the bevel gear ring 15, causing the rotating handle 5 to fail to maintain the position corresponding to the scale, making it impossible for the operator to determine the valve's position. Therefore, the rotating assembly addresses this issue. To adjust the position of the rotating handle 5, the worker simply pulls the rotating handle 5 away from the arc-shaped cover 5. The sleeve 4 slides on the sliding rod 12, disengaging the sleeve 4 from the connecting gear 14. After disengagement, the rotation of the drive rod 7 will not cause the sleeve 4 to rotate. At this time, the arc-shaped cover 5 can rotate freely, while the angle between the rotating handle 5 and the scale position remains relatively fixed. This prevents the worker from being unable to determine the valve's position based on the position of the rotating handle 5. After adjusting the position of the rotating handle 5, the worker moves the rotating handle 5 towards the arc-shaped cover 5 without rotating it. When the connecting gear ring 13 inside the sleeve 4 re-engages with the connecting gear 14, the drive rod 7 and the rotating handle 5 are re-fixed. When the rotating handle 5 rotates, it can drive the valve to open or close. This further improves the device's ability to determine the valve's position angle in environments where the position of the rotating handle 5 needs to be adjusted, reducing errors in valve judgment.

[0029] The beneficial effects of this invention are:

[0030] 4. When installing in complex and dense pipe networks, rotating the arc-shaped cover changes the relative angle between the arc-shaped cover and the transmission box, thereby changing the position of the rotating handle. This allows the valve to be used normally even in confined spaces, improving the flexibility of valve application.

[0031] 5. Furthermore, after adjustment, workers can still clearly observe the position of the valve, reducing errors in valve judgment and thus minimizing the possibility of incorrect valve operation by workers.

[0032] 6. It can quickly and easily fix the rotating handle after the angle changes, ensuring that the arc-shaped cover 5 will not rotate arbitrarily during use. At the same time, it facilitates the installation, maintenance and replacement of its internal components by workers, reducing the cost of manufacturing and using the device and improving efficiency.

[0033] The above embodiments are not intended to limit the scope of the present invention. Any modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the design concept of the present invention should be included within the scope of protection defined by the claims of the present invention.

Claims

1. An adjustable valve transmission structure, comprising a valve body (1), wherein a worm gear box (2) is provided on the valve body (1) and connected thereto, characterized in that... ； It also includes a transmission box (6) installed on the worm gear box (2), and an arc-shaped cover (5) is rotatably installed on the transmission box (6). Inside the transmission box (6) is a bevel gear ring (15) arranged coaxially with the worm gear box (2), and a drive rod (7) arranged non-collinearly with the axis of the bevel gear ring (15) is rotatably installed on the arc-shaped cover (5). A bevel gear (16) that meshes with the bevel gear ring (15) is coaxially installed on the drive rod (7). It also includes a limiting mechanism that can limit the rotation of the arc-shaped cover (5); A rotating handle (3) is installed on one end of the drive rod (7); The edge of the arc-shaped cover (5) is provided with a circular top plate (10) arranged on the same axis as the arc-shaped cover (5). A groove is formed between the top plate (10) and the arc-shaped cover (5), and the edge of the transmission box (6) is placed inside the groove by sliding seal. The top plate (10) is detachably mounted on the arc-shaped cover (5) by bolts.

2. The adjustable valve transmission structure according to claim 1, characterized in that, The inner side of the top plate (10) is fixed with a limiting tooth ring (11), and the limiting mechanism includes a limiting tooth (9) installed on the transmission box (6) to limit the rotation of the arc-shaped cover (5).

3. The adjustable valve transmission structure according to claim 2, characterized in that, The limiting mechanism also includes a pull rod (17), and a limiting tooth (9) is fixed on the pull rod (17), which is slidably mounted on the transmission box (6).

4. The adjustable valve transmission structure according to claim 3, characterized in that, The limiting mechanism also includes a top spring (18) fitted on the pull rod (17), which can drive the limiting tooth (9) to slide towards the arc-shaped cover (5).

5. The adjustable valve transmission structure according to claim 1, characterized in that, It also includes a rotating component, which allows the rotating handle (3) to remain in the same position relative to the arc-shaped cover (5) when the arc-shaped cover (5) is rotated.

6. The adjustable valve transmission structure according to claim 5, characterized in that, The rotating handle (3) is provided with a sleeve (4), and a sliding rod (12) is fixed on the drive rod (7) and slidably installed inside the sleeve (4). A connecting gear (14) is fixed on the sliding rod (12) on the same axis, and a connecting gear ring (13) that cooperates with the connecting gear (14) is provided inside the sleeve (4).

7. An adjustable valve transmission structure according to claim 6, characterized in that, The drive rod (7) is fitted with a spring (8) that drives the rotating handle (3) to move toward the arc-shaped cover (5).

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