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CN-224229377-U - Backflow-preventing electric butterfly valve

CN224229377UCN 224229377 UCN224229377 UCN 224229377UCN-224229377-U

Abstract

The utility model relates to the technical field of electric butterfly valves, in particular to a backflow-preventing electric butterfly valve. The butterfly valve comprises a butterfly valve main body and a locking mechanism, wherein the locking mechanism comprises an extrusion cap, a guide post, a sliding ring and a fixed rod, the bottom of the extrusion cap is fixedly connected with the sliding post, a guide groove is formed in the guide post, the sliding post is nested in the guide groove and slides up and down along the guide groove, the sliding ring is fixedly connected to the bottom of the sliding post, through grooves are formed in the bottoms of the sliding ring and the sliding post coaxially, the fixed rod is slidingly connected in the through grooves, a plurality of turnover rods are circumferentially distributed on the side face of the sliding ring, a rotating shaft body of the turnover rod is fixedly connected with a locking seat through a connecting plate, the guide post is arranged in the grooves formed in the same side of an upper clamping seat and a supporting rod, a locking groove is formed in the bottom of the upper clamping seat coaxially, when the extrusion cap is pressed down, the sliding ring is driven to move radially along the fixed rod, the turnover rod is forced to shrink around a shaft and separate from the locking groove, and when pressure is released, the turnover rod is expanded and is embedded into the locking groove.

Inventors

  • WANG ZENGHAI
  • SHI JIANMING
  • Che Xinwei
  • WU HAOJIE
  • WANG ZIHAO

Assignees

  • 江苏大唐国际吕四港发电有限责任公司

Dates

Publication Date
20260512
Application Date
20250716

Claims (7)

  1. 1. The anti-backflow electric butterfly valve comprises a butterfly valve main body (100) and a locking mechanism (200), and is characterized in that the locking mechanism (200) comprises an extrusion cap (201), a guide post (204), a sliding ring (206) and a fixed rod (205); the bottom of the extrusion cap (201) is fixedly connected with a sliding column (202); A guide groove is formed in the guide column (204), and the sliding column (202) is nested in the guide groove and slides up and down along the guide groove; The sliding ring (206) is fixedly connected to the bottom of the sliding column (202), and a through notch is formed in the sliding ring (206) and the bottom surface of the sliding column (202) in a coaxial manner; The fixed rod (205) is connected in the through notch in a sliding way; A plurality of turnover rods (207) circumferentially distributed on the side surface of the sliding ring (206), and the rotating shaft body of the turnover rods is fixedly connected with the locking seat (209) through a connecting plate (208); The guide column (204) is arranged in a notch formed in the same side of the upper clamping seat (102) and the supporting rod (103), and a locking groove (210) is coaxially formed in the bottom of the upper clamping seat (102); When the extrusion cap (201) is pressed down, the sliding ring (206) is driven to move along the radial direction of the fixed rod (205), the overturning rod (207) is forced to shrink around the shaft to be separated from the locking groove (210), and when the pressure is released, the overturning rod (207) expands and is embedded into the locking groove (210).
  2. 2. The electric butterfly valve of claim 1, wherein the bottom end of the fixed rod (205) is fixedly connected with the locking seat (209), and the locking seat (209) has a hemispherical structure.
  3. 3. The electric butterfly valve of claim 1, wherein the sliding column (202) is provided with an elastic member (203) in a sleeved manner, and two ends of the elastic member (203) are respectively abutted against the upper end surfaces of the extrusion cap (201) and the guide column (204).
  4. 4. The electric butterfly valve of claim 1 wherein the upper holder (102) is fixedly connected to the lower holder (101) by a bolt, and the upper holder (102) and the lower holder (101) together form an annular structure and are coated on the outer surface of the butterfly valve body (100).
  5. 5. The electric butterfly valve of claim 1, wherein the upper clamping seat (102) is provided with a plurality of groups, and a set of locking mechanism (200) is arranged in the notch of each group of upper clamping seat (102) and the notch of the corresponding supporting rod (103).
  6. 6. The electric butterfly valve of claim 5, wherein the top ends of the plurality of groups of struts (103) are fixedly connected with a protective cover (104), and the protective cover (104) covers the electric actuator of the butterfly valve main body (100).
  7. 7. The electric butterfly valve of claim 1, wherein the end of the turning rod (207) is fixedly provided with a rubber bump, and the shape of the rubber bump is matched and jogged with the inner contour of the locking groove (210).

Description

Backflow-preventing electric butterfly valve Technical Field The utility model relates to the technical field of electric butterfly valves, in particular to a backflow-preventing electric butterfly valve. Background The electric butterfly valve belongs to one of electric valve and electric regulating valve. The connection mode of the electric butterfly valve mainly comprises flange type and butt clamp type, and the sealing mode of the electric butterfly valve mainly comprises rubber sealing and metal sealing. In order to protect the electric actuator of the electric butterfly valve, a protective cover is generally installed on the electric butterfly valve, and is generally difficult to quickly detach after being installed, so that the maintenance of the electric actuator and the electric butterfly valve is affected, and therefore, the electric butterfly valve is disclosed in China patent publication No.: the utility model provides an electric butterfly valve in CN222687419U, it can improve the stability of support, cassette and protection casing through lower holder, go up the setting of holder, locking bolt, press two dogs, two inserted bars follow horizontal migration, the tip of two inserted bars deviate from two cassettes, move up the cassette and can lift down the cassette together with the protection casing, do benefit to the maintenance of electric butterfly valve main part, during the installation, press two dogs, loosen two dogs after covering two cassettes on two supports, two springs promote two dogs horizontal migration, the tip of two inserted bars inserts in the slot of two cassette lateral walls, the installation of convenient cassette, protection cover. Because in the above-mentioned technique, when dismantling cassette and protection casing, when its dog of pressing makes the inserted bar break away from the cassette notch, if loosen the dog in-process of pressing, the elasticity potential of spring can make it reset, and the inserted bar itself is the rectangle unable rotation, consequently dismantle cassette and protection casing and need both hands to continuously press the dog, at this moment, just can't vacate the hand area and take out the protection casing, need two people's cooperation to dismantle the installation work, comparatively inconvenient. Disclosure of utility model The utility model provides a backflow-preventing electric butterfly valve, which is characterized in that a locking mechanism is arranged between an upper clamping seat and a supporting rod, when the backflow-preventing electric butterfly valve is installed, only a slotted hole is required to be corresponding, then pressure is applied to an extrusion cap, an opening of a turnover rod is reduced, after the extrusion cap is inserted into the slotted hole, the rubber end face of the turnover rod is clamped in a locking slot, and when the backflow-preventing electric butterfly valve is disassembled, the extrusion cap is also required to be pressed, the opening of the turnover rod is reduced, and the locking mechanism is taken out, so that the problems in the background technology are solved, namely: in the prior art, a plurality of people are required to cooperate to detach the protective cover 104 and the clamping seat, so that the electric actuator is inconvenient to maintain. In order to achieve the above object, the electric butterfly valve comprises a butterfly valve body and a locking mechanism, wherein the locking mechanism comprises an extrusion cap, a guide post, a sliding ring and a fixed rod; the bottom of the extrusion cap is fixedly connected with a sliding column; The guide post is internally provided with a guide groove, and the sliding post is nested in the guide groove and slides up and down along the guide groove; the sliding ring is fixedly connected to the bottom of the sliding column, and a through notch is coaxially formed in the sliding ring and the bottom surface of the sliding column; the fixed rod is connected in the through notch in a sliding way; The rotating shaft bodies of the overturning rods are fixedly connected with the locking seat through connecting plates; the guide post is arranged in a notch formed in the same side of the upper clamping seat and the supporting rod, and a locking groove is coaxially formed in the bottom of the upper clamping seat. According to the technical scheme, when the extrusion cap is pressed, the sliding column is driven to move downwards along the guide groove of the guide column to drive the sliding ring to move along the radial direction of the fixed rod, the circumferentially distributed turnover rods are pulled by the displacement of the sliding ring, synchronously inwards turnover and shrink around the rotating shaft body to enable the end part of the turnover rod to be separated from the locking groove of the upper clamping seat, and after the pressure is released, the sliding ring is pushed by the pushing force of the elastic piece to reversely d