Electric butterfly valve

Abstract

The utility model belongs to the technical field of butterfly valves, and particularly relates to an electric butterfly valve which comprises a valve body, the top of the valve body is fixedly connected with a connecting bin, the inner wall of the top of the connecting bin is rotationally connected with a valve rod, the valve rod penetrates into the valve body, and the valve rod is located in the valve body and fixedly connected with a valve plate. An extrusion block at the bottom of a clamping block is completely extruded into a fixing bin, at the moment, the side wall of the extrusion block does not extrude a mounting plate any more, and at the moment, the mounting plate can reset under the action of elastic restoring force of a second spring and makes contact with the outer wall of a vertical rod of the clamping block, so that the extrusion block is fixed; the two sets of fixing plates can limit the clamping block, the valve rod is prevented from continuously rotating, and therefore the valve plate is clamped at the fixed position, and the situation that due to the fact that the flow speed of liquid in the valve body is too high, the valve plate is pushed to rotate, the flow in a butterfly valve pipeline is reduced, and even the butterfly valve breaks down is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of butterfly valves, in particular to an electric butterfly valve. Background Art

[0002] Electric butterfly valve is a type of electric valve and electric regulating valve. The main connection methods of electric butterfly valve are flange type and wafer type. The electric butterfly valve controls the switch of the butterfly valve through the power signal. This product can be used as a cut-off valve, control valve and check valve in the pipeline system. It is equipped with a manual control device. Once a power failure occurs, it can be temporarily operated manually without affecting its use.

[0003] For example, a Chinese patent with the publication number CN216843141U discloses an electric butterfly valve, including a valve body, a rubber lining fixedly arranged on the inner wall of the valve body, a wave-shaped slow-flow ridge forming a slow-flow portion, a valve plate arranged inside the valve body, a ceramic sealing ring arranged on the circumferential side of the valve plate, a valve stem vertically passing through the valve body and connected to an electric actuator chassis, a motor fixedly connected to the inner wall on the left side of the electric actuator chassis, a bevel gear arranged on the output shaft of the motor and the top of the valve stem respectively, a battery for emergency use in case of power failure is arranged inside the motor actuator, and a flow monitor is electrically connected to a controller arranged on the outer wall of the electric actuator chassis through a connecting line. After adopting the above technical scheme, the beneficial effects of the utility model are as follows: it has the function of real-time flow monitoring, is beneficial to the flow control of the operator, prevents the valve body and internal components from being damaged by excessive fluid impact, and its service life is enhanced, which can avoid the problem of the valve plate being unable to close due to an unexpected power failure.

[0004] The common electric butterfly valve in the current prior art opens and closes by rotating around the valve shaft, but lacks a locking structure. If the liquid flow rate in the butterfly valve pipeline is too fast, it may push the valve plate to rotate, causing the flow in the butterfly valve pipeline to decrease or even cause the butterfly valve to malfunction, affecting the normal use of the butterfly valve.

[0005] Therefore, an electric butterfly valve is proposed to solve the above problems. Utility Model Content

[0006] In order to make up for the deficiencies of the prior art and solve the above-mentioned problems, an electric butterfly valve is proposed.

[0007] The technical solution adopted by the utility model to solve its technical problems is: an electric butterfly valve described in the utility model includes a valve body, a connecting bin is fixedly connected to the top of the valve body, a valve stem is rotatably connected to the top inner wall of the connecting bin, the valve stem is arranged inside the valve body, the valve stem is located inside the valve body and is fixedly connected to a valve plate, a first spring is fixedly connected to the top inner wall of the connecting bin and located on one side of the valve stem, the bottom of the first spring is fixedly connected to a mounting plate, the bottom of the mounting plate is fixedly connected to a clamping block, the clamping block is composed of a vertical rod and an extrusion block, and the connecting bin and the bottom of the clamping block are fixedly connected to the valve plate. A fixed bin is connected, and two groups of through holes are opened on the outer wall of the fixed bin, and fixed plates are slidably connected in the two groups of through holes, and the outer wall of each fixing plate on the side away from the block is fixedly connected to a connecting plate, and both ends of the outer wall of each connecting plate on the side close to the fixed bin are fixedly connected to a second spring, and one end of each second spring away from the connecting plate is fixedly connected to the outer surface of the fixed bin, and the outer walls of the two groups of fixing plates on the side close to the block are both arc-shaped, and the outer wall of the valve stem is fixedly connected to a trapezoidal block, and the top of the connecting bin is fixedly connected to a driving motor, and the output shaft of the driving motor is fixedly connected to the valve stem.

[0008] Preferably, the extrusion block at the bottom of the block is conical, the side wall of the extrusion block at the bottom of the block is arc-shaped, the top of the connection bin is fixedly connected with a motor bin, and the motor bin is arranged outside the drive motor.

[0009] Preferably, the two groups of fixing plates are symmetrically arranged relative to the clamping block, and the fixing plates are adapted to the size of the through holes.

[0010] Preferably, a telescopic rod is fixedly connected to the top of the mounting plate, the telescopic rod is located inside the first spring, and one end of the telescopic rod away from the mounting plate is fixedly connected to the top inner wall of the connecting compartment.

[0011] Preferably, two groups of mounting grooves are provided on the inner walls at both ends of the valve body, a mounting block is slidably connected in each mounting groove, a filter screen is fixedly connected between two adjacent groups of mounting blocks, a third spring is fixedly connected to the outer wall of each mounting block on a side close to the valve plate, and one end of each third spring away from the mounting block is fixedly connected to the inner wall of the mounting groove.

[0012] Preferably, two groups of slide grooves are provided in the valve body and in each installation groove, a slider is fixedly connected to the outer surface of each installation block, the slider corresponds to the slide groove one by one, the slider is slidably installed in the slide groove, and a pull ring is hinged on the outer wall of each filter away from the valve plate.

[0013] Beneficial effects of the utility model:

[0014] The utility model provides an electric butterfly valve, which completely squeezes the extrusion block at the bottom of the clamping block into the fixed bin. At this time, the side wall of the extrusion block no longer squeezes the mounting plate. At this time, the mounting plate will be reset under the action of the elastic restoring force of the second spring itself, and will contact the outer wall of the vertical rod of the clamping block, thereby fixing the extrusion block. Through such an arrangement, after the valve plate is opened, the two groups of fixing plates can limit the clamping block to prevent the valve stem from continuing to rotate, thereby clamping the valve plate in a fixed position, thereby preventing the valve plate from rotating due to excessively fast liquid flow rate in the valve body, which reduces the flow in the butterfly valve pipeline and even causes the butterfly valve to malfunction.

[0015] The utility model provides an electric butterfly valve, which filters impurities in the water flow through a filter screen to prevent the impurities in the water flow from colliding with the valve plate and the valve body, causing the valve plate to rotate or even be damaged. In addition, the liquid will first impact the filter screen before impacting the valve plate. When the filter screen is impacted by the liquid, the subsequent flow rate of the liquid can be reduced, thereby reducing the impact force of the liquid on the valve plate, thereby preventing the liquid flow rate in the valve body from being too fast, causing the valve plate to rotate, reducing the flow in the butterfly valve pipeline, and even causing the butterfly valve to malfunction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1 It is a three-dimensional diagram of the utility model;

[0018] Figure 2 It is a cross-sectional stereoscopic view of the connecting bin in the utility model;

[0019] Figure 3 It is a cross-sectional stereogram of the utility model;

[0020] Figure 4 yes Figure 3 A in the enlarged view;

[0021] Figure 5 It is a three-dimensional diagram of the valve body in the utility model;

[0022] Figure 6 yes Figure 5 Enlarged view of point B in .

[0023] Legend:

[0024] 1. Valve body; 2. Connecting compartment; 3. Motor compartment; 4. Driving motor; 5. Valve stem; 6. Trapezoidal block; 7. Telescopic rod; 8. First spring; 9. Mounting plate; 10. Block; 11. Fixed compartment; 12. Fixed plate; 13. Connecting plate; 14. Second spring; 15. Mounting slot; 16. Mounting block; 17. Third spring; 18. Slide slot; 19. Sliding block; 20. Filter screen; 21. Pull ring. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Specific examples are given below.

[0027] See also Figure 1-Figure 6 The utility model provides an electric butterfly valve, including a valve body 1, a connecting bin 2 is fixedly connected to the top of the valve body 1, a valve stem 5 is rotatably connected to the top inner wall of the connecting bin 2, the valve stem 5 penetrates the inside of the valve body 1, the valve stem 5 is located inside the valve body 1 and is fixedly connected to a valve plate, a first spring 8 is fixedly connected to the top inner wall of the connecting bin 2 and located on one side of the valve stem 5, a mounting plate 9 is fixedly connected to the bottom of the first spring 8, a clamping block 10 is fixedly connected to the bottom of the mounting plate 9, the clamping block 10 is composed of a vertical rod and an extrusion block, a fixed bin 11 is fixedly connected to the inside of the connecting bin 2 and located at the bottom of the clamping block 10, and the outer wall of the fixed bin 11 Two groups of through holes are provided, and a fixing plate 12 is slidably connected in the two groups of through holes. The outer wall of each fixing plate 12 on the side away from the block 10 is fixedly connected to a connecting plate 13. The two ends of the outer wall of each connecting plate 13 on the side close to the fixed bin 11 are fixedly connected to a second spring 14. The end of each second spring 14 away from the connecting plate 13 is fixedly connected to the outer surface of the fixed bin 11. The outer walls of the two groups of fixing plates 12 on the side close to the block 10 are both arc-shaped. The outer wall of the valve stem 5 is fixedly connected to a trapezoidal block 6. The top of the connecting bin 2 is fixedly connected to a driving motor 4, and the output shaft of the driving motor 4 is fixedly connected to the valve stem 5.

[0028] In order to improve the service life of the butterfly valve, when using the butterfly valve, first turn on the drive motor 4, the output shaft of the drive motor 4 will drive the valve stem 5 to rotate 90 degrees, thereby rotating the valve plate 90 degrees through the valve stem 5, so that the valve body 1 becomes open. During the rotation of the valve stem 5, it will drive the trapezoidal block 6 outside it to rotate synchronously. During the rotation of the trapezoidal block 6, its inclined surface will contact the side wall of the mounting plate 9. As the trapezoidal block 6 continues to rotate, the side wall of the trapezoidal block 6 will squeeze the mounting plate 9 downward and stretch the first spring 8. When the mounting plate 9 moves downward, it will drive the clamping block 10 to move downward. At this time, the extrusion block at the bottom of the clamping block 10 will contact the arcuate surfaces of the two sets of fixing plates 12. As the mounting plate 9 continues to move, the clamping block 10 will 9 is squeezed toward both sides of the block 10 at the same time, and the mounting plate 9 will drive the connecting plate 13 to stretch the second spring 14 during the movement. When the squeezing block at the bottom of the block 10 is completely moved into the fixed chamber 11, its side wall no longer squeezes the mounting plate 9. At this time, the mounting plate 9 will be reset under the action of the elastic restoring force of the second spring 14 itself, and contact with the outer wall of the vertical rod of the block 10, thereby fixing the squeezing block. Through such a setting, after opening the valve plate, the two sets of fixing plates 12 can limit the block 10 to prevent the valve stem 5 from continuing to rotate, thereby clamping the valve plate in a fixed position, thereby preventing the valve plate from rotating due to the excessively fast liquid flow rate in the valve body 1, which reduces the flow in the butterfly valve pipeline and even causes the butterfly valve to malfunction.

[0029] When the electric butterfly valve is used, the driving motor 4 is turned on again to drive the valve stem 5 to reverse. During the reversal process, the valve stem 5 will drive the trapezoidal block 6 to separate from the mounting plate 9. After the trapezoidal block 6 is separated from the mounting plate 9, the mounting plate 9 will reset upward under the action of the elastic restoring force of the first spring 8 itself. At this time, the extrusion block at the bottom of the block 10 will contact the bottom of the arc-shaped surface of the two groups of mounting plates 9, and squeeze the two groups of mounting plates 9 toward the two sides of the block 10 again, thereby driving the extrusion block at the bottom of the block 10 to move out from the fixed bin 11 for subsequent use.

[0030] Further, such as Figure 2 and Figure 3 As shown, the extrusion block at the bottom of the block 10 is conically set, and the side wall of the extrusion block at the bottom of the block 10 is arc-shaped. The top of the connecting bin 2 is fixedly connected with a motor bin 3, and the motor bin 3 is arranged outside the drive motor 4. The conical extrusion block can facilitate the movement of the extrusion block between the two sets of mounting plates 9, so as to facilitate the subsequent extrusion of the mounting plates 9. The motor bin 3 can protect the drive motor 4 to prevent external water vapor from penetrating into the drive motor 4 and causing damage to it, thereby ensuring the normal use of the electric butterfly valve.

[0031] Further, such as Figure 2 and Figure 4As shown, the two groups of fixing plates 12 are symmetrically arranged relative to the block 10, and the fixing plates 12 are adapted to the size of the through holes. When the fixing plates 12 move, since the fixing plates 12 are adapted to the size of the through holes, the through holes can limit the fixing plates 12, thereby preventing the fixing plates 12 from tilting when squeezed by the block 10, thereby ensuring that the fixing plates 12 are always in a horizontal state during the movement, and further ensuring that the fixing plates 12 can subsequently have a good limiting and fixing effect on the block 10.

[0032] Further, such as Figure 1 and Figure 2 As shown, a telescopic rod 7 is fixedly connected to the top of the mounting plate 9, and the telescopic rod 7 is located inside the first spring 8. The end of the telescopic rod 7 away from the mounting plate 9 is fixedly connected to the top inner wall of the connecting chamber 2. When the mounting plate 9 moves, the telescopic rod 7 will drive the telescopic rod 7 to extend and retract back and forth. At this time, the telescopic rod 7 can limit the mounting plate 9 to prevent the mounting plate 9 and the block 10 from tilting when the trapezoidal block 6 squeezes the mounting plate 9, causing the subsequent position of the block 10 to shift, thereby ensuring that the block 10 is always located between the two sets of fixed plates 12 during use, thereby ensuring the normal use of the subsequent butterfly valve.

[0033] Further, such as Figure 5 and Figure 6 As shown, two groups of mounting grooves 15 are provided on the inner walls at both ends of the valve body 1, and a mounting block 16 is slidably connected in each of the mounting grooves 15, and a filter screen 20 is fixedly connected between two adjacent groups of the mounting blocks 16, and a third spring 17 is fixedly connected to the outer wall of each mounting block 16 on one side close to the valve plate, and one end of each third spring 17 away from the mounting block 16 is fixedly connected to the inner wall of the mounting groove 15. During the use of the butterfly valve, the filter screen 20 can filter impurities in the water flow to prevent the impurities in the water flow from colliding with the valve plate and the valve body 1, causing the valve plate to rotate or even be damaged, and the liquid will first impact the filter screen 20 before impacting the valve plate, and when the filter screen 20 is impacted by the liquid, it can reduce the subsequent flow rate of the liquid, thereby reducing the impact force of the liquid on the valve plate, thereby preventing the excessive flow rate of the liquid in the valve body 1 from pushing the valve plate to rotate, so that the flow in the butterfly valve pipeline is reduced or even the butterfly valve fails.

[0034] Furthermore, when the filter screen 20 is impacted by the liquid, the third spring 17 will be driven to contract back and forth, and the third spring 17 can play a role in shock absorption and force release for the filter screen 20, thereby increasing the service life of the filter screen 20.

[0035] Further, such as Figure 5 and Figure 6As shown, two groups of slide grooves 18 are provided in the valve body 1 and in each mounting groove 15, and a slider 19 is fixedly connected to the outer surface of each mounting block 16, and the slider 19 corresponds to the slide groove 18 one by one, and the slider 19 is slidably installed in the slide groove 18, and a pull ring 21 is hinged on the outer wall of each filter 20 on the side away from the valve plate. When the filter 20 is used for a long time, the filter 20 can be pulled out for cleaning through the pull ring 21. When the filter 20 moves, it will drive the mounting block 16 to move. At this time, the slider 19 will move synchronously in the slide groove 18, and the slider 19 can limit the mounting block 16, thereby avoiding the filter 20 from tilting when moving, so as to facilitate pulling out the filter 20 for cleaning.

[0036] Working principle: In order to improve the service life of the butterfly valve, when using the butterfly valve, first turn on the drive motor 4. The output shaft of the drive motor 4 will drive the valve stem 5 to rotate 90 degrees, thereby rotating the valve plate 90 degrees through the valve stem 5, so that the valve body 1 becomes open. During the rotation of the valve stem 5, it will drive the trapezoidal block 6 outside it to rotate synchronously. During the rotation of the trapezoidal block 6, its inclined surface will contact the side wall of the mounting plate 9. As the trapezoidal block 6 continues to rotate, the side wall of the trapezoidal block 6 will squeeze the mounting plate 9 downward and stretch the first spring 8. When the mounting plate 9 moves downward, it will drive the clamping block 10 to move downward. At this time, the extrusion block at the bottom of the clamping block 10 will contact the arc-shaped surfaces of the two sets of fixed plates 12. As the mounting plate 9 continues to move, the clamping block 10 will The mounting plate 9 is squeezed toward both sides of the block 10 at the same time, and the mounting plate 9 drives the connecting plate 13 to stretch the second spring 14 during the movement. When the squeezing block at the bottom of the block 10 is completely moved into the fixed chamber 11, its side wall no longer squeezes the mounting plate 9. At this time, the mounting plate 9 will be reset under the action of the elastic restoring force of the second spring 14 itself, and contact with the outer wall of the vertical rod of the block 10, thereby fixing the squeezing block. Through such a setting, after the valve plate is opened, the two sets of fixing plates 12 can limit the block 10 to prevent the valve stem 5 from continuing to rotate, thereby clamping the valve plate in a fixed position, thereby preventing the valve plate from rotating due to the excessively fast liquid flow rate in the valve body 1, which reduces the flow in the butterfly valve pipeline and even causes the butterfly valve to malfunction.

[0037] During the use of the butterfly valve, the filter 20 can filter impurities in the water flow to prevent the impurities in the water flow from colliding with the valve plate and the valve body 1, causing the valve plate to rotate or even be damaged. The liquid will first impact the filter 20 before impacting the valve plate. When the filter 20 is impacted by the liquid, the subsequent flow rate of the liquid can be reduced, thereby reducing the impact force of the liquid on the valve plate, thereby preventing the liquid flow rate in the valve body 1 from being too fast, causing the valve plate to rotate, reducing the flow in the butterfly valve pipeline, and even causing the butterfly valve to malfunction.

[0038] When the electric butterfly valve is used, the driving motor 4 is turned on again to drive the valve stem 5 to reverse. During the reversal process, the valve stem 5 will drive the trapezoidal block 6 to separate from the mounting plate 9. After the trapezoidal block 6 is separated from the mounting plate 9, the mounting plate 9 will reset upward under the action of the elastic restoring force of the first spring 8 itself. At this time, the extrusion block at the bottom of the block 10 will contact the bottom of the arc-shaped surface of the two groups of mounting plates 9, and squeeze the two groups of mounting plates 9 toward the two sides of the block 10 again, thereby driving the extrusion block at the bottom of the block 10 to move out from the fixed bin 11 for subsequent use.

[0039] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. An electric butterfly valve, characterized in that: The invention comprises a valve body (1), wherein the top of the valve body (1) is fixedly connected to a connecting chamber (2), the top inner wall of the connecting chamber (2) is rotatably connected to a valve stem (5), the valve stem (5) is arranged inside the valve body (1), the valve stem (5) is located inside the valve body (1) and is fixedly connected to a valve plate, a first spring (8) is fixedly connected to the top inner wall of the connecting chamber (2) and located on one side of the valve stem (5), the bottom of the first spring (8) is fixedly connected to a mounting plate (9), the bottom of the mounting plate (9) is fixedly connected to a clamping block (10), the clamping block (10) is composed of a vertical rod and an extrusion block, a fixed chamber (11) is fixedly connected inside the connecting chamber (2) and located at the bottom of the clamping block (10), and the outer wall of the fixed chamber (11) is provided with two sets of Through holes, the two groups of through holes are slidably connected with a fixing plate (12), the outer wall of each fixing plate (12) on the side away from the block (10) is fixedly connected with a connecting plate (13), the two ends of the outer wall of each connecting plate (13) on the side close to the fixed bin (11) are fixedly connected with a second spring (14), the end of each second spring (14) away from the connecting plate (13) is fixedly connected to the outer surface of the fixed bin (11), the outer walls of the two groups of fixing plates (12) on the side close to the block (10) are both arc-shaped, the outer wall of the valve stem (5) is fixedly connected with a trapezoidal block (6), the top of the connecting bin (2) is fixedly connected with a driving motor (4), and the output shaft of the driving motor (4) is fixedly connected to the valve stem (5).

2. The electric butterfly valve according to claim 1, characterized in that: The extrusion block at the bottom of the block (10) is conically arranged, the side wall of the extrusion block at the bottom of the block (10) is arc-shaped, the top of the connection bin (2) is fixedly connected to a motor bin (3), and the motor bin (3) is arranged outside the drive motor (4).

3. The electric butterfly valve according to claim 2, characterized in that: The two groups of fixing plates (12) are symmetrically arranged relative to the clamping block (10), and the fixing plates (12) are adapted to the size of the through holes.

4. The electric butterfly valve according to claim 3, characterized in that: A telescopic rod (7) is fixedly connected to the top of the mounting plate (9), the telescopic rod (7) is located inside the first spring (8), and one end of the telescopic rod (7) away from the mounting plate (9) is fixedly connected to the top inner wall of the connecting compartment (2).

5. The electric butterfly valve according to claim 4, characterized in that: Two groups of mounting grooves (15) are provided on the inner walls at both ends of the valve body (1), a mounting block (16) is slidably connected in each of the mounting grooves (15), a filter screen (20) is fixedly connected between two adjacent groups of mounting blocks (16), a third spring (17) is fixedly connected to the outer wall of each mounting block (16) on a side close to the valve plate, and one end of each third spring (17) away from the mounting block (16) is fixedly connected to the inner wall of the mounting groove (15).

6. The electric butterfly valve according to claim 5, characterized in that: Two groups of slide grooves (18) are provided in the valve body (1) and in each installation groove (15); a slider (19) is fixedly connected to the outer surface of each installation block (16); the slider (19) corresponds to the slide groove (18) one by one; the slider (19) is slidably installed in the slide groove (18); and a pull ring (21) is hingedly connected to the outer wall of each filter screen (20) on a side away from the valve plate.

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