Novel flow regulating butterfly valve

Abstract

The utility model discloses a novel flow adjusting butterfly valve which comprises a fixing plate, a valve body is fixedly installed on the lower end face of the fixing plate, a clamping groove is formed in the upper end face of the fixing plate, a valve rod is connected to the fixing plate in a rotating mode, a rotating wheel is fixedly installed on the upper end face of the valve rod, and a fixing device is fixedly installed on the outer wall of the rotating wheel. The end, away from the fixing device, of the valve rod penetrates through the valve body and is rotationally connected with the inner side wall of the valve body, a valve plate is fixedly installed on the outer wall of the valve rod, two limiting grooves are symmetrically formed in the outer wall of the valve plate, and a sliding groove is formed in the bottom wall of each limiting groove. Through the arrangement of the sealing device, the valve plate and the fixing device, after the valve plate is abraded, the sealing device can ensure the sealing of flow and prevent leakage, and the fixing device can fix the rotating wheel, so that the valve rod and the valve plate can be fixed, and the valve plate can be prevented from shifting after being impacted by liquid.

Description

Technical Field

[0001] The utility model relates to the technical field of butterfly valves, in particular to a novel flow regulating butterfly valve. Background Art

[0002] A butterfly valve, also known as a flap valve, is a regulating valve with a simple structure. It can be used for the on-off control of low-pressure pipeline media. A butterfly valve refers to a valve with a closing member (valve disc or butterfly plate) as a disc, which rotates around the valve axis to achieve opening and closing. The valve uses a disc-type opening and closing member to reciprocate about 90° to open, close or adjust the flow of the medium. The butterfly valve not only has a simple structure, small size, light weight, low material consumption, small installation size, small driving torque, easy and quick operation, but also has good flow regulation function and closing sealing characteristics. It is one of the fastest-growing valve varieties in the past decade. The use of butterfly valves is very extensive, and the variety and quantity of its use are still continuing to expand, and it is developing towards high temperature, high pressure, large diameter, high sealing, long life, excellent adjustment characteristics, and one valve with multiple functions.

[0003] When the existing device is in use, the valve plate may wear out between the valve plate and the valve body during long-term use, which may cause a decrease in sealing performance and lead to leakage. At the same time, when the existing butterfly valve is adjusting the flow, the butterfly plate is easily displaced due to the impact of the liquid, which makes the flow regulation effect of the butterfly valve poor. Therefore, it is necessary to redesign a new flow regulation butterfly valve to address the above problems. Utility Model Content

[0004] The utility model aims to solve the problems in the background technology and proposes a novel flow regulating butterfly valve.

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

[0006] A new flow regulating butterfly valve comprises a fixed plate, a valve body is fixedly installed on the lower end surface of the fixed plate, a clamping groove is provided on the upper end surface of the fixed plate, a valve stem is rotatably connected to the fixed plate, a runner is fixedly installed on the upper end surface of the valve stem, a fixing device is fixedly installed on the outer wall of the runner, one end of the valve stem away from the fixing device passes through the valve body and is rotatably connected to the inner side wall of the valve body, a valve plate is fixedly installed on the outer wall of the valve stem, two limit grooves are symmetrically provided on the outer wall of the valve plate, a sliding groove is provided on the bottom wall of each limit groove, a sealing device is provided in each slide groove, and the output end of the sealing device is slidably clamped in the limit groove.

[0007] Preferably, the fixing device comprises a fixing block, and the fixing block is fixedly mounted on the outer wall of the rotating wheel, a threaded rod is threadedly connected to the fixing block, and one end of the threaded rod is threadedly connected to the slot.

[0008] Preferably, a handle is fixedly mounted on one end of the threaded rod away from the slot.

[0009] Preferably, each of the sealing devices includes a spring, and the spring is fixedly connected in the slide groove, one end of the spring is fixedly connected to a connecting block, and the connecting block is slidably clamped in the slide groove, and one end of the connecting block away from the spring is fixedly connected to a limiting plate, and the limiting plate is slidably clamped in the limiting groove.

[0010] Preferably, both sides of the limiting plate are rounded.

[0011] Preferably, a pointer is fixedly mounted on the outer wall of the valve stem.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. By setting up the sealing device and the valve plate to cooperate with each other, when the valve plate is worn, the limit plate of the sealing device can ensure the sealing of the flow and prevent leakage. The elastic characteristics of the spring of the sealing device can drive the connecting block and the limit plate to adaptively compensate according to their own wear, so that the limit plate can maintain a close seal with the inner wall of the valve body.

[0014] 2. By setting a fixing device, the runner can be fixed by connecting the threaded rod of the fixing device with the slot, thereby preventing the valve plate from being displaced after being impacted by the liquid, thereby improving the flow regulation effect of the butterfly valve.

[0015] In summary, the utility model provides a sealing device, a valve plate, and a fixing device. After the valve plate is worn, the sealing device can be used to ensure the sealing of the flow to prevent leakage. The fixing device can fix the runner, thereby fixing the valve stem and the valve plate, thereby preventing the valve plate from being displaced after being impacted by liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a new flow regulating butterfly valve proposed by the utility model;

[0017] Figure 2 This is a schematic diagram of the valve stem portion of a novel flow regulating butterfly valve proposed by the utility model;

[0018] Figure 3 This is a schematic diagram of the limiting groove portion of a new flow regulating butterfly valve proposed by the utility model;

[0019] Figure 4 This is a partial schematic diagram of a sealing device of a novel flow regulating butterfly valve proposed by the utility model.

[0020] In the figure: 1 valve body, 2 fixing plate, 3 slot, 4 valve plate, 5 rotating wheel, 6 fixing block, 7 threaded rod, 8 handle, 9 pointer, 10 valve stem, 11 limiting slot, 12 sliding slot, 13 spring, 14 connecting block, 15 limiting plate. DETAILED DESCRIPTION

[0021] 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.

[0022] Reference Figure 1-4 A new flow regulating butterfly valve comprises a fixed plate 2, a valve body 1 is fixedly mounted on the lower end surface of the fixed plate 2, a card slot 3 is provided on the upper end surface of the fixed plate 2, a valve stem 10 is rotatably connected to the fixed plate 2, a runner 5 is fixedly mounted on the upper end surface of the valve stem 10, a fixing device is fixedly mounted on the outer wall of the runner 5, one end of the valve stem 10 away from the fixing device passes through the valve body 1 and is rotatably connected to the inner side wall of the valve body 1, a valve plate 4 is fixedly mounted on the outer wall of the valve stem 10, two limiting grooves 11 are symmetrically provided on the outer wall of the valve plate 4, a slide groove 12 is provided on the bottom wall of each limiting groove 11, a sealing device is provided in each slide groove 12, and the output end of the sealing device is slidably carded in the limiting groove 11.

[0023] The fixing device includes a fixing block 6, and the fixing block 6 is fixedly installed on the outer wall of the rotating wheel 5. A threaded rod 7 is threadedly connected to the fixing block 6, and one end of the threaded rod 7 is threadedly connected to the slot 3. It should be noted that the connection between the threaded rod 7 and the slot 3 can fix the fixing block 6 to the rotating wheel 5.

[0024] A handle 8 is fixedly mounted on one end of the threaded rod 7 away from the slot 3 .

[0025] Each sealing device includes a spring 13, and the spring 13 is fixedly connected in the slide groove 12, one end of the spring 13 is fixedly connected with a connecting block 14, and the connecting block 14 is slidably clamped in the slide groove 12, and the end of the connecting block 14 away from the spring 13 is fixedly connected to a limiting plate 15, and the limiting plate 15 is slidably clamped in the limiting groove 11. When the limiting plate 15 is worn, under the elastic action of the spring 13, the spring 13 can make the connecting block 14 drive the limiting plate 15 to always fit the inner wall of the valve body 1. The elastic characteristics of the spring 13 can make the limiting plate 15 adaptively compensate for its own wear, so that the limiting plate 15 can maintain a close and sealed fit with the inner wall of the valve body 1.

[0026] Both sides of the limit plate 15 are rounded. It should be noted that such a design can ensure that the limit plate 15 can rotate better in the valve body 1 .

[0027] A pointer 9 is fixedly mounted on the outer wall of the valve stem 10 . It should be noted that the pointer 9 can be used in conjunction with a scale plate to facilitate observation of the angle pointed by the pointer 9 and to perform precise angle control on the valve stem 10 and the valve plate 4 .

[0028] When the utility model is in use, when the valve plate 4 is worn, the flow will be blocked by the limit plate 15 to prevent the flow from passing through the valve plate 4. When the limit plate 15 is worn, under the action of the spring 13, the spring 13 can make the connecting block 14 drive the limit plate 15 to always fit the inner wall of the valve body 1. The elastic characteristics of the spring 13 can make the limit plate 15 adaptively compensate for its own wear, so that the limit plate 15 can maintain a close and sealed fit with the inner wall of the valve body 1.

[0029] When it is necessary to adjust the valve plate 4 for flow control, first turn the handle 8 to drive the threaded rod 7 to rotate, then the threaded rod 7 will rotate on the fixed block 6 until one end of the threaded rod 7 is no longer connected to the slot 3, then turn the wheel 5, the wheel 5 will drive the valve stem 10 to rotate, then the valve plate 4 will continue to rotate with the valve stem 10, at this time, the flow control can be performed based on the rotation angle of the valve plate 4, and the angle indicated by the pointer 9 can be observed to accurately control the flow of the valve plate 4.

[0030] 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 novel flow regulating butterfly valve, comprising a fixed plate (2), characterized in that: The lower end surface of the fixed plate (2) is fixedly mounted with a valve body (1), the upper end surface of the fixed plate (2) is provided with a slot (3), the fixed plate (2) is rotatably connected with a valve stem (10), the upper end surface of the valve stem (10) is fixedly mounted with a rotating wheel (5), the outer wall of the rotating wheel (5) is fixedly mounted with a fixing device, the end of the valve stem (10) away from the fixing device passes through the valve body (1) and is rotatably connected with the inner wall of the valve body (1), the outer wall of the valve stem (10) is fixedly mounted with a valve plate (4), the outer wall of the valve plate (4) is symmetrically provided with two limiting grooves (11), the bottom wall of each limiting groove (11) is provided with a sliding groove (12), each sliding groove (12) is provided with a sealing device, and the output end of the sealing device is slidably clamped in the limiting groove (11).

2. A novel flow regulating butterfly valve according to claim 1, characterized in that: The fixing device comprises a fixing block (6), and the fixing block (6) is fixedly mounted on the outer wall of the rotating wheel (5), a threaded rod (7) is threadedly connected to the fixing block (6), and one end of the threaded rod (7) is threadedly connected to the clamping groove (3).

3. A new flow regulating butterfly valve according to claim 2, characterized in that: A handle (8) is fixedly mounted on one end of the threaded rod (7) away from the clamping slot (3).

4. A novel flow regulating butterfly valve according to claim 1, characterized in that: Each of the sealing devices comprises a spring (13), and the spring (13) is fixedly connected in the slide groove (12); one end of the spring (13) is fixedly connected to a connecting block (14), and the connecting block (14) is slidably mounted in the slide groove (12); one end of the connecting block (14) away from the spring (13) is fixedly connected to a limiting plate (15), and the limiting plate (15) is slidably mounted in the limiting groove (11).

5. A novel flow regulating butterfly valve according to claim 4, characterized in that: Both sides of the limiting plate (15) are rounded.

6. A novel flow regulating butterfly valve according to claim 1, characterized in that: A pointer (9) is fixedly mounted on the outer wall of the valve stem (10).

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