Coaxial large-diameter butterfly valve heightening device

Abstract

The utility model discloses a coaxial large-diameter butterfly valve heightening device which comprises a valve body, a valve plate is rotatably connected in the valve body, a connecting seat is installed on the upper end face of the valve body, a valve rod is rotatably connected to the upper end of the connecting seat, the valve rod is fixedly connected with the valve plate, an inserting rod is slidably connected in the valve rod, and a sleeve is fixedly connected to the upper end of the inserting rod. A threaded rod is rotationally connected to the top in the sleeve, the threaded rod is connected with two sets of sliding rods through a connecting mechanism, the sliding rods are slidably connected with the sleeve, and the ends of the two sets of sliding rods are jointly and fixedly connected with a rotating handle. The threaded rod, the sliding block, the rotating handle and the like are arranged, the sliding block on the threaded section of the threaded rod is driven to slide by means of the mode that the rotating block drives the threaded rod to rotate, and therefore the height of the rotating handle can be adjusted, the height of the rotating handle can be accurately adjusted to any position through the threaded structure, and higher flexibility and adjusting precision are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of butterfly valves, in particular to a coaxial large-caliber butterfly valve heightening device. Background Art

[0002] With the progress of science and technology, butterfly valves are not only simple in structure, small in size and light in weight, but also have small driving torque and are easy to operate. Butterfly valves are mainly fluid switches that use disc-type opening and closing parts to reciprocate about 90 degrees. They are usually used as blocking and opening, flow regulating valves and damping valves in liquid, gas and other fluid pipeline systems. Large-diameter butterfly valves refer to valves with a diameter greater than 100 cm.

[0003] A Chinese utility model with authorization announcement number CN216200626U discloses a coaxial large-diameter butterfly valve with a heightening device. When the device is in use, the blocks provided at both ends of the adjusting rod and the fixed rod are embedded into the inside of the slot, so that the connecting rod and the valve stem can be positioned and connected, and the height between the fixed rod and the adjusting rod can be adjusted by the adjusting bolt provided on the outside of the fixed rod, so as to facilitate the adjustment of the height of the connecting rod and the screw rod. However, in actual use, the height of the device is adjusted by adjusting the bolt and multiple screw holes at equal intervals, but it can only be adjusted to a specified preset height, which has certain limitations. Therefore, it is necessary to redesign the coaxial large-diameter butterfly valve heightening device to address the above problems. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a coaxial large-caliber butterfly valve heightening device.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A coaxial large-diameter butterfly valve heightening device comprises a valve body, a valve plate is rotatably connected in the valve body, a connecting seat is installed on the upper end surface of the valve body, a valve stem is rotatably connected to the upper end of the connecting seat, the valve stem is fixedly connected to the valve plate, an insert rod is slidably connected in the valve stem, a sleeve is fixedly connected to the upper end of the insert rod, a threaded rod is rotatably connected to the top of the sleeve, the threaded rod is connected to two groups of sliding rods through a connecting mechanism, the sliding rods are slidably connected to the sleeve, and the ends of the two groups of sliding rods are commonly fixedly connected to a turning handle.

[0007] Preferably, the connection mechanism comprises a moving block threadedly connected to the threaded section of the threaded rod, and the two groups of sliding rods are fixedly connected to the upper end surface of the moving block.

[0008] Preferably, the inner wall of the sleeve is square, the outer walls on both sides of the moving block are arranged in a plane, and the outer walls on both sides of the moving block are in contact with the inner wall of the sleeve.

[0009] Preferably, a slide groove is provided on the outer wall of the sleeve, the slide groove is communicated with the interior of the sleeve, a rotating block is rotatably connected to the slide groove, and the rotating block is coaxially and fixedly connected to the threaded rod.

[0010] Preferably, the outer wall of the valve stem is slidably connected to a pin, the end of the pin passes through the outer wall of the valve stem and extends to the inside of the plug rod, the end of the pin is fixedly connected to a slider, the outer wall of the pin is sleeved with a spring, one end of the spring is fixedly connected to the outer wall of the valve stem, and the other end of the spring is fixedly connected to the slider.

[0011] Preferably, the outer wall of the plug rod is hexagonally deformed, the outer wall of the plug rod fits with the inner wall of the valve stem, and a limit block is installed at the connection between the rotating block and the threaded rod.

[0012] The utility model has the following beneficial effects:

[0013] 1. The utility model provides a threaded rod, a slider, a turning handle and other devices, and drives the slider on the threaded section to slide by driving the threaded rod to rotate with the help of a turning block, so that the height of the turning handle can be adjusted. The height of the turning handle can be accurately adjusted to any position through the threaded structure, which has higher flexibility and adjustment accuracy.

[0014] 2. The utility model provides devices such as pins and springs, and can realize quick installation and removal of the valve stem and the plug rod by sliding the pin in and out. The provided spring can make the provided pin tightly inserted in the plug rod to ensure stability after installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of the coaxial large-diameter butterfly valve heightening device proposed by the utility model;

[0016] Figure 2 for Figure 1 Schematic diagram of the structure of the middle plug rod and sleeve.

[0017] Figure 3 for Figure 2 Section view.

[0018] In the figure: 1. valve body; 2. valve plate; 3. connecting seat; 4. valve stem; 5. sleeve; 6. turning handle; 7. plug rod; 8. slide groove; 9. turning block; 10. pin; 11. slider; 12. spring; 13. threaded rod; 14. moving block; 15. limit block; 16. slide rod. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] Reference Figure 1-3 , a coaxial large-caliber butterfly valve heightening device comprises a valve body 1, a valve plate 2 is rotatably connected in the valve body 1, a connecting seat 3 is installed on the upper end surface of the valve body 1, a valve stem 4 is rotatably connected to the upper end of the connecting seat 3, the valve stem 4 is fixedly connected to the valve plate 2, a plug rod 7 is slidably connected in the valve stem 4, a sleeve 5 is fixedly connected to the upper end of the plug rod 7, a threaded rod 13 is rotatably connected to the top of the sleeve 5, the threaded rod 13 is connected to two groups of sliding rods 16 through a connecting mechanism, the sliding rod 16 is slidably connected to the sleeve 5, and the ends of the two groups of sliding rods 16 are commonly fixedly connected to a turning handle 6, the connecting mechanism comprises a moving block 14 threadedly connected to the threaded section of the threaded rod 13, and the two groups of sliding rods 16 are fixedly connected to the upper end surface of the moving block 14;

[0021] By rotating the threaded rod 13, the handle 6 can be driven to slide up and down. Compared with the fixed method of the preset height, continuous and precise height adjustment can be achieved, and it is no longer limited to the fixed preset height. This can meet a wider range of usage needs and greatly improve flexibility.

[0022] Reference Figure 2 and Figure 3 The inner wall of the sleeve 5 is square, and the outer walls on both sides of the moving block 14 are flat. The outer walls on both sides of the moving block 14 are in contact with the inner wall of the sleeve 5. A slide groove 8 is opened on the outer wall of the sleeve 5. The slide groove 8 is connected to the inside of the sleeve 5. A rotating block 9 is rotatably connected at the slide groove 8. The rotating block 9 is coaxially fixedly connected with the threaded rod 13. A pin 10 is slidably connected to the outer wall of the valve stem 4. The end of the pin 10 passes through the outer wall of the valve stem 4 and extends to the inside of the plug rod 7. A slider 11 is fixedly connected to the end of the pin 10. A spring 12 is sleeved on the outer wall of the pin 10. One end of the spring 12 is fixedly connected to the outer wall of the valve stem 4, and the other end of the spring 12 is fixedly connected to the slider 11. The outer wall of the plug rod 7 is six-deformed, and the outer wall of the plug rod 7 fits with the inner wall of the valve stem 4. A limit block 15 is installed at the junction of the rotating block 9 and the threaded rod 13;

[0023] With the help of the provided pin 10, the insertion rod 7 and its upper end components can be quickly installed and disassembled, and the provided spring 12, by utilizing its own elastic force, can keep the pin 10 always inserted in the insertion rod 7 to ensure stability after installation.

[0024] In this utility model, reference Figure 3 By rotating the rotating block 9, the threaded rod 13 is driven to rotate, and the moving block 14 on the threaded section slides horizontally upward or downward in the process, and synchronously drives the upper handlebar 6 to slide up and down, so as to adjust the height of the handlebar 6. Compared with the height adjustment method in the comparative document, the height of the handlebar 6 can be accurately adjusted to any position through the threaded structure, which has higher flexibility and adjustment accuracy.

[0025] At the same time, the installation relationship between the access rod 7 and the valve stem 4 can be accessed by pulling the pin 10 out of the rod 7. Conversely, the pin 10 can be inserted into the inside of the rod 7 to achieve quick installation. The provided spring 12 can make the installed pin 10 tightly inserted into the inside of the rod 7 to ensure the stability of the rod 7 after being connected to the valve stem 4.

[0026] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A coaxial large-diameter butterfly valve heightening device, comprising a valve body (1), characterized in that: The valve body (1) is rotatably connected to a valve plate (2), the upper end surface of the valve body (1) is provided with a connecting seat (3), the upper end of the connecting seat (3) is rotatably connected to a valve stem (4), the valve stem (4) is fixedly connected to the valve plate (2), the valve stem (4) is slidably connected to an insert rod (7), the upper end of the insert rod (7) is fixedly connected to a sleeve (5), the top of the sleeve (5) is rotatably connected to a threaded rod (13), the threaded rod (13) is connected to two groups of sliding rods (16) via a connecting mechanism, the sliding rods (16) are slidably connected to the sleeve (5), and the ends of the two groups of sliding rods (16) are commonly fixedly connected to a turning handle (6).

2. The coaxial large-diameter butterfly valve heightening device according to claim 1 is characterized in that: The connection mechanism comprises a moving block (14) threadedly connected to a threaded section of a threaded rod (13), and the two groups of sliding rods (16) are fixedly connected to the upper end surface of the moving block (14).

3. The coaxial large-diameter butterfly valve heightening device according to claim 2 is characterized in that: The inner wall of the sleeve (5) is square, the outer walls on both sides of the moving block (14) are both plane-shaped, and the outer walls on both sides of the moving block (14) are in contact with the inner wall of the sleeve (5).

4. The coaxial large-diameter butterfly valve heightening device according to claim 3 is characterized in that: The outer wall of the sleeve (5) is provided with a slide groove (8), the slide groove (8) is communicated with the inside of the sleeve (5), a rotating block (9) is rotatably connected to the slide groove (8), and the rotating block (9) is coaxially fixedly connected to the threaded rod (13).

5. The coaxial large-diameter butterfly valve heightening device according to claim 4 is characterized in that: The outer wall of the valve stem (4) is slidably connected to a pin (10), the end of the pin (10) passes through the outer wall of the valve stem (4) and extends to the inside of the plug rod (7), the end of the pin (10) is fixedly connected to a slider (11), the outer wall of the pin (10) is sleeved with a spring (12), one end of the spring (12) is fixedly connected to the outer wall of the valve stem (4), and the other end of the spring (12) is fixedly connected to the slider (11).

6. The coaxial large-diameter butterfly valve heightening device according to claim 5 is characterized in that: The outer wall of the insert rod (7) is six-shaped and fits with the inner wall of the valve stem (4). A limit block (15) is installed at the connection between the rotating block (9) and the threaded rod (13).

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