Electric fluorine-lined butterfly valve with anti-leakage function

Abstract

The utility model relates to an electric fluorine-lined butterfly valve with an anti-leakage function. The electric fluorine-lined butterfly valve comprises a butterfly valve cavity, a valve shaft, a valve plate, an anti-corrosion assembly, an air bag, a front limiting plate and a rear limiting plate. According to the fluorine-lined butterfly valve, the detachable anti-corrosion assembly is arranged outside the valve plate, the valve plate is prevented from being corroded by corrosive elements in fluid, the service life of the fluorine-lined butterfly valve is prolonged, the damaged anti-corrosion assembly can be replaced conveniently, meanwhile, the air bag is arranged on the outer wall of the anti-corrosion assembly, and the front limiting plate and the rear limiting plate are arranged on the inner wall of the cavity of the butterfly valve, so that the anti-corrosion effect is good. When the two ends of the anti-corrosion assembly are close to the front limiting plate and the rear limiting plate correspondingly, the front limiting plate and the rear limiting plate are used for limiting and clamping the anti-corrosion assembly, then the air bag is used for extruding the front limiting plate and the rear limiting plate, and through the effect of the air bag, the anti-corrosion assembly is driven to rotate. And gaps among the front limiting plate, the rear limiting plate and the anti-corrosion assembly are sealed, the sealing performance of the fluorine lining butterfly valve is improved, and the anti-leakage function is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of control valves, in particular to an electric fluorine-lined butterfly valve with an anti-leakage function. Background Art

[0002] Fluorine-lined butterfly valve is a component used to realize the on-off and flow control of pipeline systems. It has been widely used in many fields such as petroleum, chemical industry, metallurgy, hydropower, etc. The corrosion resistance of the internal valve plate of the fluorine-lined butterfly valve in the existing technology is poor. When the fluid flowing in the external pipeline is highly corrosive, the valve plate is often corroded by the corrosive elements in the fluid, which seriously affects the service life of the fluorine-lined butterfly valve. In addition, the fluorine-lined butterfly valve usually only has a sealing gasket on the inner wall of the valve body to prevent leakage, and the sealing effect is poor. Therefore, in order to solve the above technical problems, an electric fluorine-lined butterfly valve with anti-leakage function is proposed. Utility Model Content

[0003] The purpose of the utility model is to provide an electric fluorine-lined butterfly valve with anti-leakage function, which solves the problems raised in the above background technology by arranging a valve shaft, a valve plate, an anti-corrosion component, an airbag, a front limit plate and a rear limit plate.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solution: an electric fluorine-lined butterfly valve with an anti-leakage function, comprising a butterfly valve cavity, a valve shaft rotatably disposed in the butterfly valve cavity, the valve shaft passing through the butterfly valve cavity, a valve plate mounted on the valve shaft, the valve plate disposed inside the butterfly valve cavity, a detachable anti-corrosion component disposed outside the valve plate, and an airbag disposed on the outer wall of the anti-corrosion component;

[0005] A front limit plate and a rear limit plate that are squeezed and fitted with the airbag are fixedly provided on the inner wall of the butterfly valve cavity. The front limit plate is provided at the front end of the anti-corrosion component, and the rear limit plate is provided at the rear end of the anti-corrosion component.

[0006] As a preferred solution, the upper end of the valve shaft is connected to a motor, and a sealing ring is fixedly provided on the outer wall of the valve shaft (2) at the lower end of the motor.

[0007] As a preferred solution, the lower end of the valve shaft is connected to the base, and a bearing is provided at the connection between the base and the valve shaft.

[0008] As a preferred solution, a buffer spring is provided inside the base.

[0009] As a preferred solution, the anti-corrosion component includes a first assembly shell and a second assembly shell, one side of the first assembly shell is provided with a groove, and one side of the second assembly shell is provided with a protrusion (34), and the protrusion is matched with the groove.

[0010] As a preferred solution, a first slot is provided on the valve plate, and second slots with the same size as the first slot are provided on the first assembly shell and the second assembly shell, and locking bolts are provided in the second slots.

[0011] As a preferred solution, a fixing rod is provided on the left and right side walls of the butterfly valve cavity, a reinforcing collar is provided at the rear end of the fixing rod, and a plurality of positioning holes are provided on the reinforcing collar.

[0012] It can be seen from the technical solution provided by the above utility model that the utility model provides an electric fluorine-lined butterfly valve with anti-leakage function, which has the following beneficial effects:

[0013] The utility model installs an anti-corrosion component on the outside of the valve plate. When the fluid flowing in the external pipeline is highly corrosive, the anti-corrosion component can protect the valve plate and prevent the corrosive elements in the fluid from corroding the valve plate, thereby extending the service life of the fluorine-lined butterfly valve. At the same time, the anti-corrosion component is set to be detachable, which facilitates the replacement of damaged anti-corrosion components.

[0014] The utility model provides an anti-corrosion component on the outside of the valve plate, an air bag is provided on the outer wall of the anti-corrosion component, and a front limit plate and a rear limit plate are provided on the inner wall of the butterfly valve cavity. The valve shaft is rotated, and the valve shaft drives the valve plate and the anti-corrosion component to rotate. When the two ends of the anti-corrosion component are close to the front limit plate and the rear limit plate respectively, the front limit plate and the rear limit plate are used to limit and clamp the anti-corrosion component, and then the air bag is used to squeeze the front limit plate and the rear limit plate. Through the action of the air bag, the gap between the front limit plate, the rear limit plate and the anti-corrosion component is sealed, thereby improving the sealing performance of the fluorine-lined butterfly valve and enhancing the anti-leakage function. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of an electric fluorine-lined butterfly valve with anti-leakage function in the utility model;

[0016] Figure 2 This is a front cross-sectional view of an electric fluorine-lined butterfly valve with anti-leakage function in the utility model;

[0017] Figure 3 This is a schematic structural diagram of an anti-corrosion component of an electric fluorine-lined butterfly valve with an anti-leakage function according to the utility model.

[0018] In the figure: 1. Butterfly valve cavity; 11. Valve plate; 12. First slot; 2. Valve shaft; 21. Sealing ring; 22. Motor; 3. Anti-corrosion component; 31. First assembly shell; 32. Second assembly shell; 33. Groove; 34. Protrusion; 35. Second slot; 36. Locking bolt; 4. Airbag; 41. Front limit plate; 42. Rear limit plate; 5. Base; 51. Buffer spring; 6. Bearing; 7. Fixing rod; 8. Reinforcement ring; 81. Mounting hole. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0021] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referenced. Thus, features identified with "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0023] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0024] like Figure 1-3 As shown, the embodiment of the present invention provides an electric fluorine-lined butterfly valve with an anti-leakage function, comprising a butterfly valve cavity 1, a valve shaft 2 is rotatably arranged in the butterfly valve cavity 1, the valve shaft 2 passes through the butterfly valve cavity 1, a valve plate 11 is mounted on the valve shaft 2, the valve plate 11 is arranged inside the butterfly valve cavity 1, a detachable anti-corrosion component 3 is arranged outside the valve plate 11, and an air bag 4 is arranged on the outer wall of the anti-corrosion component 3;

[0025] A front limit plate 41 and a rear limit plate 42 that are squeezed and fitted with the airbag 4 are fixedly provided on the inner wall of the butterfly valve cavity 1. The front limit plate 41 is arranged at the front end of the anti-corrosion component 3, and the rear limit plate 42 is arranged at the rear end of the anti-corrosion component 3.

[0026] The valve shaft 2 is used to rotate the valve plate 11, the anticorrosion assembly 3 is used to prevent the corrosion of the valve plate by the corrosive liquid, avoid the corrosion of the corrosive elements in the fluid to the valve plate 11, prolong the service life of the fluorine-lined butterfly valve, and the anticorrosion assembly 3 is detachable, so that the damaged anticorrosion assembly 3 can be replaced conveniently, the valve shaft 2 is rotated to drive the valve plate 11 and the anticorrosion assembly 3 to rotate, when the two ends of the anticorrosion assembly 3 are close to the front limiting plate 41 and the rear limiting plate 42 respectively, the front limiting plate 41 and the rear limiting plate 42 are used for limiting and clamping the anticorrosion assembly 3, and then the air bag 4 is used for extruding the front limiting plate 41 and the rear limiting plate 42, so that the gap between the front limiting plate 41, the rear limiting plate 42 and the anticorrosion assembly 3 is sealed through the action of the air bag 4, the sealing property of the fluorine-lined butterfly valve is improved, and the anti-leakage function is enhanced.

[0027] As shown in Figure 2 The upper end of the valve shaft 2 is connected with a motor 22, and a sealing ring 21 is fixedly arranged on the outer wall of the valve shaft 2 at the lower end of the motor 22.

[0028] The upper end of the valve shaft 2 is connected with the output end of the motor 22, the motor 22 can drive the valve shaft 2 to rotate by being started, and the sealing ring 21 can improve the sealing effect of the valve shaft 2.

[0029] As shown in Figure 1 The lower end of the valve shaft 2 is connected with a base 5, and a bearing 6 is arranged at the connecting position of the base 5 and the valve shaft 2.

[0030] The lower end of the valve shaft 2 is connected with the base 5 through the bearing 6, so that the friction between the valve shaft 2 and the base 5 is reduced, and the rotation is more smooth.

[0031] As shown in Figure 2 The base 5 is internally provided with a buffer spring 51.

[0032] The buffer spring 51 is arranged in the base 5, and when the base 5 is impacted, the buffer spring 51 can buffer the impact force, and reduce the damage of the impact force to the butterfly valve cavity 1.

[0033] As shown in Figure 3 The anticorrosion assembly 3 comprises a first assembly shell 31 and a second assembly shell 32, one side of the first assembly shell 31 is provided with a groove 33, one side of the second assembly shell 32 is provided with a protrusion 34, and the protrusion 34 is matched with the groove 33.

[0034] Among them, the anti-corrosion component 3 includes a first assembly shell 31 and a second assembly shell 32. When the anti-corrosion component 3 needs to be installed on the outside of the valve plate 11, the valve plate 11 is placed between the first assembly shell 31 and the second assembly shell 32, and then the protrusion 34 on one side of the second assembly shell 32 is inserted into the groove 33 of the first assembly shell 31 to realize the assembly of the anti-corrosion component 3 to the outside of the valve plate 11.

[0035] like Figure 3 As shown, the valve plate 11 is provided with a first slotted hole 12 , and the first assembly shell 31 and the second assembly shell 32 are provided with a second slotted hole 35 having the same size as the first slotted hole 12 , and a locking bolt 36 is provided in the second slotted hole 35 .

[0036] The second slotted hole 35 is aligned with the first slotted hole 12 , and the locking bolts 36 are inserted into the first slotted hole 12 and the second slotted hole 35 to further fix the first assembly shell 31 and the second assembly shell 32 to the outside of the valve plate 11 .

[0037] Combine Figure 1 and Figure 2 A fixing rod 7 is provided on the left and right side walls of the butterfly valve cavity 1, and a reinforcement ring 8 is provided at the rear end of the fixing rod 7. A plurality of positioning holes 81 are provided on the reinforcement ring 8.

[0038] Among them, the fixing rod 7 can play a certain guiding and positioning role in the installation of the butterfly valve cavity 1 and the pipeline to avoid installation deviation. At the same time, the reinforcement ring 8 can be mounted on the outer wall of the pipeline and then cooperated with the positioning hole 81 to reinforce the butterfly valve cavity 1 after installation.

[0039] The working principle of the embodiment is as follows: when the butterfly valve with the anti-leakage function is used, first, the left and right fixed rods 7 of the butterfly valve cavity 1 are used for installation and guidance, the reinforcing sleeve ring 8 behind the fixed rod 7 is sleeved outside the pipeline, the positioning hole 81 on the reinforcing sleeve ring 8 is used for positioning, the butterfly valve cavity 1 is fixed in the pipeline, then the valve plate 11 is placed between the first assembly shell 31 and the second assembly shell 32, the protrusion 34 on one side of the second assembly shell 32 is inserted into the groove 33 of the first assembly shell 31, the anti-corrosion assembly 3 is assembled to the outside of the valve plate 11, then the second slot hole 35 is aligned with the first slot hole 12, the locking bolt 36 is inserted into the first slot hole 12 and the second slot hole 35, the first assembly shell 31 and the second assembly shell 32 are further fixed, when the fluorine-lined butterfly valve is closed, the motor 22 is started, the valve shaft 2 is driven to rotate, the valve plate 11 and the anti-corrosion assembly 3 are driven to rotate, when the two ends of the anti-corrosion assembly 3 are close to the front limiting plate 41 and the rear limiting plate 42 respectively, the front limiting plate 41 and the rear limiting plate 42 are used for limiting and clamping the anti-corrosion assembly 3, the air bag 4 is used for extruding the front limiting plate 41 and the rear limiting plate 42, the gap between the front limiting plate 41, the rear limiting plate 42 and the anti-corrosion assembly 3 is sealed through the action of the air bag 4, the sealing property of the fluorine-lined butterfly valve is improved, and the anti-leakage function is enhanced.

[0040] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. An electric fluorine-lined butterfly valve with anti-leakage function, comprising a butterfly valve cavity (1), characterized in that: A valve shaft (2) is rotatably provided in the butterfly valve cavity (1), the valve shaft (2) passes through the butterfly valve cavity (1), a valve plate (11) is mounted on the valve shaft (2), the valve plate (11) is provided inside the butterfly valve cavity (1), a detachable anti-corrosion component (3) is provided outside the valve plate (11), and an air bag (4) is provided on the outer wall of the anti-corrosion component (3); A front limit plate (41) and a rear limit plate (42) are fixedly provided on the inner wall of the butterfly valve cavity (1) and are pressed and fitted with the airbag (4). The front limit plate (41) is provided at the front end of the anti-corrosion component (3), and the rear limit plate (42) is provided at the rear end of the anti-corrosion component (3).

2. The electric fluorine-lined butterfly valve with anti-leakage function according to claim 1 is characterized in that: The upper end of the valve shaft (2) is connected to a motor (22), and a sealing ring (21) is fixedly provided on the outer wall of the valve shaft (2) at the lower end of the motor (22).

3. The electric fluorine-lined butterfly valve with anti-leakage function according to claim 2 is characterized in that: The lower end of the valve shaft (2) is connected to the base (5), and a bearing (6) is provided at the connection between the base (5) and the valve shaft (2).

4. The electric fluorine-lined butterfly valve with anti-leakage function according to claim 3 is characterized in that: A buffer spring (51) is provided inside the base (5).

5. The electric fluorine-lined butterfly valve with anti-leakage function according to claim 1 is characterized in that: The anti-corrosion component (3) comprises a first assembly shell (31) and a second assembly shell (32), wherein a groove (33) is provided on one side of the first assembly shell (31), and a protrusion (34) is provided on one side of the second assembly shell (32), wherein the protrusion (34) cooperates with the groove (33).

6. The electric fluorine-lined butterfly valve with anti-leakage function according to claim 5 is characterized in that: The valve plate (11) is provided with a first slotted hole (12), the first assembly shell (31) and the second assembly shell (32) are provided with a second slotted hole (35) having the same size as the first slotted hole (12), and a locking bolt (36) is provided in the second slotted hole (35).

7. The electric fluorine-lined butterfly valve with anti-leakage function according to claim 6 is characterized in that: A fixing rod (7) is provided on the left and right side walls of the butterfly valve cavity (1), a reinforcing collar (8) is provided at the rear end of the fixing rod (7), and a plurality of positioning holes (81) are provided on the reinforcing collar (8).

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