Leakage-proof electric butterfly valve

Abstract

The utility model belongs to the technical field of valves, and particularly relates to an anti-leakage type electric butterfly valve which comprises a valve body, a valve rod is rotatably connected in the valve body, a valve clack is fixed at the bottom end of the valve rod, a sealing ring is fixed on the surface of the valve clack, the sealing ring is tightly attached to the inner wall of the valve body, and a shell is fixed at the top of the valve body. According to the electric butterfly valve, the valve body, the valve rod, the valve clack, the sealing ring, the shell, the worm, the worm gear, the protective cover, the motor and the secondary plugging assembly are arranged, in the using process of the electric butterfly valve, the secondary plugging assembly is arranged in the valve body, and when the valve clack is opened or closed, the secondary plugging assembly can be driven to be opened or closed at the same time; therefore, the sealing performance of the valve body can be further enhanced, fluid in the valve body is prevented from leaking, and the sealing piece of the secondary plugging assembly adopts an attached sealing mode, so that the abrasion degree of the sealing piece can be reduced to a certain extent.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a leakage-proof 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 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 can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media. However, during long-term use, the current butterfly valve achieves a sealing effect because its valve disc contacts the inner wall of the valve body through a sealing ring. When the valve disc sealing ring and the valve body rotate for a long time and wear, the butterfly valve is very prone to leakage and is inconvenient to use. Therefore, we propose a leakage-proof electric butterfly valve to solve the above problem. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies in the prior art, the utility model provides a leakage-proof electric butterfly valve, which solves the problems raised in the above-mentioned background technology.

[0005] (II) Technical solution

[0006] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0007] A leakage-proof electric butterfly valve comprises a valve body, a valve stem is rotatably connected inside the valve body, a valve disc is fixed to the bottom end of the valve stem, a sealing ring is fixed to the surface of the valve disc, the sealing ring is tightly fitted to the inner wall of the valve body, a shell is fixed to the top of the valve body, a worm is rotatably connected between the inner walls on both sides of the shell through bearings, a worm wheel is fixed to the surface of the valve stem, the worm wheel is meshingly connected to the worm, a protective cover is fixed to one side wall of the shell, a motor is fixed to the inside of the protective cover, the output end of the motor is fixedly connected to one end of the worm, and a secondary plugging assembly is arranged inside the valve body.

[0008] Furthermore, the secondary sealing assembly includes two circular plates fixed inside the valve body, the side walls of the circular plates are each provided with a through hole one and eight through holes two, the interior of the valve body is slidably connected with two sealing frames, one side wall of the sealing frames is fixed with a sealing ring and eight sealing gaskets, the sealing rings and sealing gaskets are tightly fitted with the corresponding circular plates respectively, one side wall of the sealing frame is rotatably connected with a connecting rod through a pin shaft, and the other end of the connecting rod passes through the corresponding through hole one and is rotatably connected to the valve disc through a pin shaft.

[0009] Furthermore, one side wall of the blocking frame is fixed with one cone block 1 and eight cone blocks 2.

[0010] Furthermore, flanges are fixed at both ends of the valve body, and the side walls of the flanges are provided with mounting holes in a circular array.

[0011] Furthermore, two through grooves are provided on the surface of the protective cover, and dustproof nets are fixed inside the through grooves.

[0012] Furthermore, a rotating block is fixed to one end of the worm, and a surface of the rotating block is chamfered.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the utility model provides a leakage-proof electric butterfly valve, which has the following beneficial effects:

[0015] The utility model provides a valve body, a valve stem, a valve disc, a sealing ring, a housing, a worm, a worm gear, a protective cover, a motor and a secondary plugging component. During the use of the electric butterfly valve, a secondary plugging component is provided inside the valve body. When the valve disc is opened or closed, the secondary plugging component can be driven to open or close at the same time, thereby further enhancing the sealing performance of the valve body and avoiding leakage of the fluid inside the valve body. The sealing component of the secondary plugging component adopts a close-fitting sealing method, thereby reducing the degree of wear of the sealing component to a certain extent. At the same time, the valve stem is driven to rotate through the cooperation of the worm gear and the worm. Therefore, when a circuit failure occurs in the valve body motor, the valve stem will not rotate after the valve stem is manually started and stopped. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the valve body of the utility model;

[0018] Figure 3 This is a schematic diagram of the blocking frame structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the protective cover structure of the utility model.

[0020] In the figure: 1. valve body; 2. valve stem; 3. valve disc; 4. sealing ring; 5. housing; 6. worm; 7. worm wheel; 8. protective cover; 9. motor; 10. secondary plugging assembly; 1001. round plate; 1002. through hole one; 1003. through hole two; 1004. sealing ring; 1005. sealing gasket; 1006. connecting rod; 1007. plugging frame; 11. conical block one; 12. conical block two; 13. flange; 14. through groove; 15. dust screen; 16. rotating block. DETAILED DESCRIPTION

[0021] 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 in 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.

[0022] Example

[0023] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, an anti-leakage electric butterfly valve proposed in an embodiment of the utility model comprises a valve body 1, flanges 13 are fixed at both ends of the valve body 1, and the side walls of the flanges 13 are provided with mounting holes in a ring array, which is more convenient when the valve body 1 is connected and fixed to the fluid delivery pipeline, a valve stem 2 is rotatably connected inside the valve body 1, a valve flap 3 is fixed at the bottom end of the valve stem 2, a sealing ring 4 is fixed on the surface of the valve flap 3, and the sealing ring 4 is tightly fitted with the inner wall of the valve body 1, a shell 5 is fixed on the top of the valve body 1, a worm 6 is rotatably connected between the inner walls of both sides of the shell 5 through a bearing, a rotating block 16 is fixed at one end of the worm 6, and a chamfer is provided on the surface of the rotating block 16, when a circuit fails, it is convenient to manually close or open the valve, and the chamfer provided on the surface of the rotating block 16 can make the hand more comfortable, a worm wheel 7 is fixed on the surface of the valve stem 2, and the worm wheel 7 is meshed with the worm 6, a protective cover 8 is fixed on one side wall of the shell 5, and the surface of the protective cover 8 has two A through groove 14 is formed, and a dustproof net 15 is fixed inside the through groove 14, which facilitates ventilation and heat dissipation of the interior of the protective cover 8, and the dustproof net 15 can prevent dust and flocs from entering the interior and affecting the motor 9. A motor 9 is fixed inside the protective cover 8, and the output end of the motor 9 is fixedly connected to one end of the worm 6. A secondary plugging component 10 is arranged inside the valve body 1. When the butterfly valve is used, when the valve needs to be opened, the worm 6 is driven to rotate by starting the motor 9 in the forward direction, and the worm 6 can drive the worm wheel 7 to rotate after the worm 6 rotates. When the worm 6 rotates, the valve stem 2 can be driven to rotate, and finally the valve stem 2 can drive the valve disc 3 to open, and when the valve disc 3 rotates, it can drive the secondary plugging component 10 inside the valve body 1 to open, and the fluid inside the pipeline can flow at this time. When closing the valve, it is only necessary to start the motor 9 in reverse direction. Because the worm 6 and the worm wheel 7 have a self-locking function, when a circuit failure occurs in the motor 9, the valve stem 2 can be prevented from rotating after the valve is manually started and stopped.

[0024] like Figure 2 and Figure 3As shown, in some embodiments, the secondary plugging assembly 10 includes two circular plates 1001 fixed inside the valve body 1, and the side walls of the circular plates 1001 are each provided with a through hole 1002 and eight through holes 2 1003. The inside of the valve body 1 is slidably connected to two plugging frames 1007, and one side wall of the plugging frame 1007 is fixed with a sealing ring 1004 and eight sealing gaskets 1005. The sealing ring 1004 and the sealing gasket 1005 are respectively tightly fitted with the corresponding circular plates 1001, and one side wall of the plugging frame 1007 is rotatably connected with a connecting rod 1006 through a pin shaft, and the other end of the connecting rod 1006 passes through the corresponding through hole 1002 and passes through the pin shaft. It is rotatably connected to the valve flap 3. When in use, after the valve flap 3 rotates, with the cooperation of the two connecting rods 1006, the two blocking frames 1007 can be pushed to move in the opposite direction. When the blocking frame 1007 moves in the opposite direction, it will drive the sealing ring 1004 and the sealing gasket 1005 to separate from the circular plate 1001. At this time, the fluid can flow through the through hole 1002 and the through hole 2 1003. When closed, the rotating valve flap 3 can drive the two blocking frames 1007 to move and fit closely with the adjacent circular plate 1001 through the two connecting rods 1006. At this time, the through hole 1002 and the through hole 2 1003 can be blocked, thereby enhancing the anti-leakage sealing performance of the valve body 1.

[0025] like Figure 2 As shown, in some embodiments, one side wall of the sealing frame 1007 is fixed with a conical block 11 and eight conical blocks 2 12. When the fluid flows into the interior of the valve body 1, the resistance of the fluid can be reduced so that the fluid can pass through the sealing frame 1007 more smoothly.

[0026] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A leakage-proof electric butterfly valve, comprising a valve body (1), characterized in that: The valve body (1) is rotatably connected to a valve stem (2) inside, a valve flap (3) is fixed to the bottom end of the valve stem (2), a sealing ring (4) is fixed to the surface of the valve flap (3), and the sealing ring (4) is tightly fitted with the inner wall of the valve body (1), a shell (5) is fixed to the top of the valve body (1), a worm (6) is rotatably connected between the inner walls on both sides of the shell (5) through bearings, a worm wheel (7) is fixed to the surface of the valve stem (2), and the worm wheel (7) is meshingly connected to the worm (6), a protective cover (8) is fixed to one side wall of the shell (5), a motor (9) is fixed inside the protective cover (8), and the output end of the motor (9) is fixedly connected to one end of the worm (6), and a secondary plugging component (10) is arranged inside the valve body (1).

2. The anti-leakage electric butterfly valve according to claim 1, characterized in that: The secondary plugging assembly (10) comprises two circular plates (1001) fixed inside the valve body (1), the side walls of the circular plates (1001) are each provided with a through hole one (1002) and eight through holes two (1003), the interior of the valve body (1) is slidably connected with two plugging frames (1007), one side wall of the plugging frames (1007) is fixed with a sealing ring (1004) and eight sealing gaskets (1005), the sealing ring (1004) and the sealing gasket (1005) are respectively tightly fitted with the corresponding circular plates (1001), one side wall of the plugging frames (1007) is rotatably connected with a connecting rod (1006) via a pin shaft, the other end of the connecting rod (1006) passes through the corresponding through hole one (1002) and is rotatably connected to the valve flap (3) via a pin shaft.

3. The anti-leakage electric butterfly valve according to claim 2, characterized in that: One side wall of the blocking frame (1007) is fixed with one conical block 1 (11) and eight conical blocks 2 (12).

4. The anti-leakage electric butterfly valve according to claim 1, characterized in that: Flanges (13) are fixed to both ends of the valve body (1), and the side walls of the flanges (13) are provided with mounting holes in a circular array.

5. The anti-leakage electric butterfly valve according to claim 1, characterized in that: Two through slots (14) are provided on the surface of the protective cover (8), and dustproof nets (15) are fixed inside the through slots (14).

6. The anti-leakage electric butterfly valve according to claim 1, characterized in that: A rotating block (16) is fixed to one end of the worm (6), and a chamfer is provided on the surface of the rotating block (16).

Images