Electric butterfly valve

Abstract

The utility model relates to the technical field of valves, in particular to an electric butterfly valve which comprises a valve body, a valve seat, a butterfly plate and a valve rod connected with the butterfly plate, a medium channel is arranged in the valve body, the valve seat and the butterfly plate are located in the medium channel in a sealing fit mode, and the valve body is connected with a valve cover. The end, away from the butterfly plate, of the valve rod penetrates through the valve deck to be connected with an electric actuating mechanism, the supporting plate is connected with the electric actuating mechanism through a bolt piece, one end of the supporting rod is connected with the supporting plate, and the other end of the supporting rod is connected with the valve deck. The butterfly valve is provided with a structure capable of diffusing vibration generated by the electric actuating mechanism, that is, the supporting rod and the supporting plate transmit the vibration of the electric actuating mechanism to the valve cover, the vibration is shared and counteracted, the vibration influence on the valve rod is reduced, the influence on the butterfly plate is very little, and the good sealing effect of the valve can be kept.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to an electric 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 on-off control of low-pressure pipeline media. A butterfly valve refers to a valve in which the closing member (valve disc or butterfly plate) is a disc that rotates around the valve axis to achieve opening and closing.

[0003] Butterfly valves can be divided into electric butterfly valves, pneumatic butterfly valves, hydraulic butterfly valves and manual butterfly valves according to the driving mode. The electric butterfly valve usually includes a valve body, a valve seat, a butterfly plate, and a valve stem connected to the butterfly plate. The medium channel is opened and closed by the sealing cooperation between the valve seat and the butterfly plate, and the valve stem is driven to rotate by the electric actuator. The electric butterfly valve in the prior art cannot solve the problem that the vibration generated by the operation of the electric actuator only affects the valve stem. The valve stem is affected by the vibration of the electric actuator, causing the connected butterfly plate to shake, which in turn causes the sealing cooperation with the valve seat to fail. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings and deficiencies of the prior art and to provide an electric butterfly valve. The utility model has a structure that can diffuse the vibration generated by the electric actuator, that is, the support rod and the support plate transmit the vibration of the electric actuator to the valve cover, share and offset the vibration, and reduce the vibration effect on the valve stem. The effect on the butterfly plate will be minimal, so the good sealing effect of the valve can be maintained.

[0005] The technical solution adopted by the utility model is as follows: an electric butterfly valve, including a valve body, a valve seat, a butterfly plate and a valve stem connected to the butterfly plate, a medium channel is provided in the valve body, the valve seat and the butterfly plate are sealed and cooperated in the medium channel, the valve body is connected to a valve cover, one end of the valve stem away from the butterfly plate passes through the valve cover and is connected to an electric actuator, and also includes a support rod and a support plate, the support plate is connected to the electric actuator by a bolt, one end of the support rod is connected to the support plate and the other end is connected to the valve cover.

[0006] It also includes a bracket connected to the support rod, on which a movable block and a pair of clamping claws are arranged. The two clamping claws have the same structure and are respectively installed at the two ends of the movable block. A clamping part for clamping the electric actuator is formed between the two clamping claws.

[0007] The movable block is provided with a buffer groove, and the positions of the two ends of the buffer groove corresponding to the clamping jaws are provided with openings for the clamping jaws to extend into, and the clamping jaw extends into the buffer groove and extends an abutment portion that is adapted to the inner wall of the buffer groove, and the clamping jaw is slidably connected to the buffer groove through the abutment portion.

[0008] The portion of the clamping claw extending into the buffer groove is covered with an elastic member, one end of the elastic member abuts against the abutting portion and the other end abuts against the inner wall of the opening.

[0009] The bracket is provided with a mounting seat for mounting the movable block, a rotating bearing is arranged in the mounting seat, and the movable block is rotatably connected with the mounting seat via the rotating bearing.

[0010] The outer wall of the support rod is provided with an external thread and a self-locking nut threadably connected to the external thread, and the bracket is slidably connected to the support rod and abuts against the upper part of the self-locking nut.

[0011] The bracket surrounds the electric actuator, and a plurality of exhaust holes are provided on the end surface of the bracket located above the electric actuator.

[0012] A dustproof net is provided at a position of the bracket corresponding to the exhaust hole, and the dustproof net is connected to the bracket by magnetic attraction.

[0013] The beneficial effects of the utility model are as follows: the utility model has a structure that can diffuse the vibration generated by the electric actuator, that is, the support rod and the support plate transmit the vibration of the electric actuator to the valve cover, share and offset the vibration, and reduce the vibration impact on the valve stem. The impact on the butterfly plate will be minimal, so the good sealing effect of the valve can be maintained. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, without paying creative labor, other drawings obtained based on these drawings still belong to the scope of the utility model.

[0015] Figure 1 This is a schematic diagram of the structure of the electric butterfly valve of the utility model;

[0016] Figure 2 It is a partial enlarged structural schematic diagram of the utility model;

[0017] Figure 3 for Figure 2 A schematic diagram of the local enlarged structure at point A in the middle;

[0018] In the figure, 1-valve body, 2-valve seat, 3-butterfly plate, 4-valve stem, 5-medium channel, 6-valve cover, 7-electric actuator, 8-support rod, 9-support plate, 10-bolt member, 11-bracket, 12-movable block, 13-clamping jaw, 14-buffer groove, 15-opening, 16-abutment portion, 17-elastic member, 18-mounting seat, 19-rotating bearing, 20-self-locking nut, 21-exhaust hole, 22-dustproof net. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings.

[0020] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for distinguishing two non-identical entities with the same name or non-identical parameters. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. The subsequent embodiments will not explain this one by one.

[0021] The directions and positions mentioned in the present invention, such as "upper", "lower", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., are only for reference to the directions or positions of the drawings. Therefore, the directions and positions used are used to explain and understand the present invention, but not to limit the scope of protection of the present invention.

[0022] like Figures 1 to 3 As shown, an embodiment of the utility model is an electric butterfly valve, comprising a valve body 1, a valve seat 2, a butterfly plate 3 and a valve stem 4 connected to the butterfly plate 3, a medium channel 5 is provided in the valve body 1, the valve seat 2 and the butterfly plate 3 are sealed and fitted in the medium channel 5, the valve body 1 is connected to a valve cover 6, one end of the valve stem 4 away from the butterfly plate 3 passes through the valve cover 6 and is connected to an electric actuator 7, and also comprises a support rod 8 and a support plate 9, the support plate 9 is connected to the electric actuator 7 by a bolt 10, one end of the support rod 8 is connected to the support plate 9 and the other end is connected to the valve cover 6.

[0023] The beneficial effects of such a configuration are as follows: the utility model has a structure capable of diffusing the vibration generated by the electric actuator, that is, the support rod and the support plate transmit the vibration of the electric actuator to the valve cover, thereby allocating and offsetting the vibration, and reducing the vibration influence on the valve stem. The influence on the butterfly plate will be minimal, thereby maintaining a good sealing effect of the valve.

[0024] Further, it includes a bracket 11 connected to the support rod 8, and a movable block 12 and a pair of clamps 13 are provided on the bracket 11. The two clamps 13 have the same structure and are respectively installed at the two ends of the movable block 12, and a clamping portion for clamping the electric actuator 7 is formed between the two clamps 13.

[0025] The beneficial effects of such a configuration are as follows: the clamping jaws of the bracket support and stabilize the electric actuator, further distribute and offset vibrations, extend the distance that vibrations are transmitted to the valve cover, reduce the effects of vibrations, and improve the stability of the structure.

[0026] It is further configured that the movable block 12 is provided with a buffer groove 14, and openings 15 for the clamping jaws 13 to extend into are provided at the positions of the two ends of the buffer groove 14 corresponding to the positions of the clamping jaws 13, and the clamping jaws 13 extend into the buffer groove 14 and have abutment portions 16 adapted to the inner wall of the buffer groove 14, and the clamping jaws 13 are slidably connected to the buffer groove 14 via the abutment portions 16.

[0027] The beneficial effects of such a configuration are as follows: the clamping jaw is slidably connected to the buffer groove of the movable block through the abutment portion, and the clamping jaw can adapt to electric actuators of different sizes, thereby increasing the scope of application and improving the shock absorption capability.

[0028] Furthermore, the portion of the clamping jaw 13 extending into the buffer groove 14 is covered with an elastic member 17 , one end of the elastic member 17 abuts against the abutting portion 16 and the other end abuts against the inner wall of the opening 15 .

[0029] The beneficial effects of such a configuration are as follows: the elastic force of the elastic member helps to offset the vibration generated by the electric actuator, further reducing the impact of the vibration on other components, and the elastic member increases the clamping force of the clamp, making the clamping more stable and further reducing the vibration.

[0030] It is further provided that a mounting seat 18 for mounting the movable block 12 is provided on the bracket 11 , a rotating bearing 19 is provided inside the mounting seat 18 , and the movable block 12 is rotatably connected to the mounting seat 18 via the rotating bearing 19 .

[0031] The beneficial effects of such a configuration are as follows: by rotating the bearing to help the movable block and the clamp connected to the movable block to rotate, the clamp can clamp in more directions and can clamp different positions of the electric actuator, thereby improving the practicality of the structure.

[0032] It is further configured that the outer wall of the support rod 8 is provided with an external thread and a self-locking nut 20 threadably connected to the external thread, and the bracket 11 is slidably connected to the support rod 8 and abuts against the top of the self-locking nut 20 .

[0033] The beneficial effects of such a configuration are as follows: by means of the self-locking nut cooperating with the thread of the support rod, the position of the abutting bracket can be easily adjusted, thereby increasing the applicable range of the bracket and being able to adapt to electric actuators of different sizes.

[0034] It is further provided that the bracket 11 surrounds the electric actuator 7 , and a plurality of exhaust holes 21 are provided on the end surface of the bracket 11 located above the electric actuator 7 .

[0035] The beneficial effects of such a setting are as follows: the exhaust hole helps to discharge the heat generated by the electric actuator, reduces the impact of the heat generated by the electric actuator on the valve, and prevents the possibility of overheating failure of the electric actuator. When the electric actuator overheats, it will produce abnormal noise and greater vibration.

[0036] It is further configured that a dustproof net 22 is provided at a position of the bracket 11 corresponding to the exhaust hole 21, and the dustproof net 22 is connected to the bracket 11 by magnetic attraction.

[0037] The beneficial effects of such a configuration are as follows: dust is collected through the dustproof net, dust entering the bracket is reduced, and dust is prevented from accumulating on the surface of the electric actuator, thereby improving the heat dissipation effect.

[0038] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.

Claims

1. An electric butterfly valve, comprising a valve body (1), a valve seat (2), a butterfly plate (3), and a valve stem (4) connected to the butterfly plate (3), wherein a medium passage (5) is provided in the valve body (1), the valve seat (2) and the butterfly plate (3) are sealingly fitted and located in the medium passage (5), the valve body (1) is connected to a valve cover (6), and an end of the valve stem (4) away from the butterfly plate (3) passes through the valve cover (6) and is connected to an electric actuator (7), characterized in that: It also includes a support rod (8) and a support plate (9), wherein the support plate (9) is connected to the electric actuator (7) via a bolt member (10), and one end of the support rod (8) is connected to the support plate (9) and the other end is connected to the valve cover (6).

2. The electric butterfly valve according to claim 1, characterized in that: It also includes a bracket (11) connected to the support rod (8), the bracket (11) being provided with a movable block (12) and a pair of clamping jaws (13), the two clamping jaws (13) having the same structure and being respectively mounted at two ends of the movable block (12), and a clamping portion for clamping the electric actuator (7) being formed between the two clamping jaws (13).

3. The electric butterfly valve according to claim 2, characterized in that: The movable block (12) is provided with a buffer groove (14), and openings (15) for the clamping jaw (13) to extend into are provided at positions at both ends of the buffer groove (14) corresponding to the positions of the clamping jaw (13). When the clamping jaw (13) extends into the buffer groove (14), an abutment portion (16) adapted to the inner wall of the buffer groove (14) is extended, and the clamping jaw (13) is slidably connected to the buffer groove (14) via the abutment portion (16).

4. The electric butterfly valve according to claim 3, characterized in that: The portion of the clamping jaw (13) extending into the buffer groove (14) is covered with an elastic member (17), one end of the elastic member (17) abuts against the abutment portion (16) and the other end abuts against the inner wall of the opening (15).

5. The electric butterfly valve according to claim 2, characterized in that: The bracket (11) is provided with a mounting seat (18) for mounting the movable block (12), a rotating bearing (19) is provided in the mounting seat (18), and the movable block (12) is rotatably connected to the mounting seat (18) via the rotating bearing (19).

6. The electric butterfly valve according to claim 2, characterized in that: The outer wall of the support rod (8) is provided with an external thread and a self-locking nut (20) threadably connected to the external thread, and the bracket (11) is slidably connected to the support rod (8) and abuts against the top of the self-locking nut (20).

7. The electric butterfly valve according to claim 2, characterized in that: The bracket (11) surrounds the electric actuator (7), and a plurality of exhaust holes (21) are provided on the end surface of the bracket (11) located above the electric actuator (7).

8. The electric butterfly valve according to claim 7, characterized in that: A dustproof net (22) is provided at a position of the bracket (11) corresponding to the exhaust hole (21), and the dustproof net (22) is connected to the bracket (11) by magnetic attraction.

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