CN213808936U

CN213808936U - Butterfly valve with anti-backflow function

Info

Publication number: CN213808936U
Application number: CN202022400956.4U
Authority: CN
Inventors: 洪建新
Original assignee: Tianjin Neles Valve Co ltd
Current assignee: Tianjin Niles Valve Co.,Ltd.
Priority date: 2020-10-26
Filing date: 2020-10-26
Publication date: 2021-07-27
Anticipated expiration: 2030-10-26

Abstract

The utility model relates to the technical field of butterfly valves, in particular to a butterfly valve with backflow prevention function, which comprises a fixed frame, wherein the top end of the inner side of the fixed frame is provided with a rotating handle, the rotating handle penetrates through the fixed frame and is rotationally connected with the fixed frame, the bottom end of the rotating handle is fixedly connected with a first threaded shaft, the outer side of the first threaded shaft is spirally connected with a baffle plate, the baffle plate is slidably connected with the fixed frame, the outer side of the baffle plate is provided with a gasket, the front end and the rear end of the fixed frame are both fixedly connected with a limit frame, the inner side of the limit frame is slidably connected with a clamping block, the device is matched with the fixed connection of the rotating handle and the first threaded shaft, the spiral connection of the first threaded shaft and the baffle plate, the fixed connection of the baffle plate and the gasket, and the sliding connection of the baffle plate and the fixed frame through the baffle plate and the first threaded shaft, and the backflow phenomenon in the use process of the device is avoided, the normal use of the device is ensured.

Description

Butterfly valve with anti-backflow function

Technical Field

The utility model relates to a butterfly valve technical field specifically is a butterfly valve with anti-return function.

Background

The butterfly valve is also called a flap valve, is a regulating valve with simple structure, can be used for the butterfly valve for the on-off control of low-pressure pipeline media, and refers to a valve, the closing part of which is a disc and rotates around a valve shaft to open and close, the valve can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like, and mainly plays the roles of cutting off and throttling on the pipeline.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a butterfly valve with anti-return function to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a butterfly valve with backflow prevention function, includes the mount, the inboard top of mount is equipped with rotates the handle, and rotates the handle and run through the mount, rotate the handle and rotate to be connected with the mount, rotate the first threaded spindle of bottom fixedly connected with, first threaded spindle outside screwed connection has the baffle, and baffle and mount sliding connection, the baffle outside is equipped with the gasket, the equal spacing of fixedly connected with in both ends around the mount, the inboard sliding connection of spacing has the fixture block, the fixture block is kept away from the one end central point at mount center and is put the intercommunication and have the connecting pipe, the fixture block is close to the one end fixedly connected with rubber pad at mount center, and rubber pad and spacing sliding connection.

Preferably, the thread direction of the upper end of the first thread shaft is opposite to the thread direction of the lower end of the first thread shaft, the first thread shaft is symmetrically arranged, and the first thread shaft is rotatably connected with the fixing frame.

Preferably, the gasket is fixedly connected with the baffle, the gasket is made of a rubber plate, the first threaded shaft penetrates through the gasket, and the first threaded shaft is rotatably connected with the gasket.

Preferably, the fixture block is kept away from the equal sliding connection in one end left and right sides at mount center and is had the locating piece, and the locating piece runs through spacing, locating piece and spacing sliding connection, the inboard screwed connection of locating piece has second threaded shaft, the one end fixedly connected with location handle at mount center is kept away from to second threaded shaft, and fixes a position the handle and run through spacing, the location handle rotates with spacing and is connected.

Preferably, there are 4 locating pieces, and the locating piece symmetry sets up at spacing inboard.

Compared with the prior art, the beneficial effects of the utility model are that:

1. in the utility model, through the arrangement of the baffle and the first threaded shaft, the arrangement is matched with the rotation handle to be fixedly connected with the first threaded shaft, the first threaded shaft is in threaded connection with the baffle, the baffle is in fixed connection with the gasket, and the baffle is in sliding connection with the fixing frame;

2. the utility model discloses in, through locating piece and the spacing frame that sets up, this kind sets up the fixed connection of sliding connection, fixture block and rubber pad of cooperation fixture block and spacing frame and the sliding connection of locating piece and spacing frame and fixture block of screw thread axle and locating piece of rubber pad, during the operative installations, made things convenient for the connection of outside connecting pipe, easy operation is convenient, labour saving and time saving.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic cross-sectional view of the fixing frame of the present invention;

FIG. 3 is a schematic view of the overall structure of the fixing frame of the present invention;

fig. 4 is a schematic view of the cross-sectional structure of the limiting frame of the present invention.

In the figure: 1-a fixed frame, 2-a rotating handle, 3-a first threaded shaft, 4-a baffle, 5-a gasket, 6-a limiting frame, 7-a clamping block, 8-a connecting pipe, 9-a rubber pad, 10-a positioning handle, 11-a second threaded shaft and 12-a positioning block.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution:

a butterfly valve with backflow prevention function comprises a fixing frame 1, wherein a rotating handle 2 is arranged at the top end of the inner side of the fixing frame 1, the rotating handle 2 penetrates through the fixing frame 1, the rotating handle 2 is rotatably connected with the fixing frame 1, a first threaded shaft 3 is fixedly connected to the bottom end of the rotating handle 2, a baffle plate 4 is spirally connected to the outer side of the first threaded shaft 3, the baffle plate 4 is in sliding connection with the fixing frame 1, the switch of a device is convenient to control through the arrangement, the backflow phenomenon cannot occur, a gasket 5 is arranged on the outer side of the baffle plate 4, the arrangement ensures the sealing performance after the device is closed, limiting frames 6 are fixedly connected to the front end and the rear end of the fixing frame 1, a clamping block 7 is slidably connected to the inner side of the limiting frame 6, the arrangement facilitates the connection of the device, a connecting pipe 8 is communicated with the central position of one end, away from the center of the fixing frame 1, of the clamping block 7 is fixedly connected with a rubber pad 9 near the center of the fixing frame 1, and the rubber pad 9 is connected with the limiting frame 6 in a sliding way.

The thread direction of the upper end of the first thread shaft 3 is opposite to the thread direction of the lower end of the first thread shaft 3, the first thread shaft 3 is symmetrically arranged, the first thread shaft 3 is rotatably connected with the fixing frame 1, the arrangement is convenient for controlling the two baffle plates 4 to move simultaneously, so that the control device is stably opened and closed, the operation is simple and convenient, the gasket 5 is fixedly connected with the baffle plates 4, the gasket 5 is made of a rubber plate, the first thread shaft 3 penetrates through the gasket 5, the first thread shaft 3 is rotatably connected with the gasket 5, the sealing performance of the device after the device is closed is better, the left side and the right side of one end, away from the center of the fixing frame 1, of the fixture block 7 are respectively and slidably connected with a positioning block 12, the positioning block 12 penetrates through the limiting frame 6, the positioning block 12 is slidably connected with the limiting frame 6, the inner side of the positioning block 12 is spirally connected with a second thread shaft 11, one end, away from the center of the fixing frame 1, of the second thread shaft 11 is fixedly connected with a positioning handle 10, and the location is 10 to run through spacing 6, and the location is 10 to be connected with spacing 6 rotation, and this kind of setting has made things convenient for the connection of device, and easy operation is convenient, and there are 4 locating pieces 12, and the 12 symmetry settings of locating piece are in spacing 6 inboards, and this kind of setting makes the connecting pipe 8 of outside more stable after connecting, and the operation is swiftly convenient.

The working process is as follows: when the device is used, go into fixture block 7 card earlier in spacing 6, then rotational positioning is 10, second threaded shaft 11 can rotate this moment, locating piece 12 can constantly compress tightly fixture block 7 this moment, rubber pad 9 can constantly be compressed this moment, when the location is 10 can't continue to rotate, the connection of external connection pipe 8 has been accomplished, and the operation is simple and convenient, when needs are opened and are closed the device, only need rotate 2 can, first threaded shaft 3 can rotate this moment, baffle 4 can constantly be opened and is closed this moment, and baffle 4 can constantly take place to slide with mount 1, because baffle 4 outside fixedly connected with rubber material's gasket 5, so the device is closed the leakproofness good, and the phenomenon of backward flow can not appear.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a butterfly valve with anti-return function, includes mount (1), its characterized in that: the top end of the inner side of the fixed frame (1) is provided with a rotating handle (2), the rotating handle (2) penetrates through the fixed frame (1), the rotating handle (2) is rotatably connected with the fixed frame (1), the bottom end of the rotating handle (2) is fixedly connected with a first threaded shaft (3), the outer side of the first threaded shaft (3) is spirally connected with a baffle (4), the baffle (4) is connected with the fixed frame (1) in a sliding way, a gasket (5) is arranged on the outer side of the baffle (4), the front end and the rear end of the fixing frame (1) are both fixedly connected with a limiting frame (6), a clamping block (7) is connected to the inner side of the limiting frame (6) in a sliding manner, a connecting pipe (8) is communicated with the central position of one end of the clamping block (7) far away from the center of the fixing frame (1), one end of the clamping block (7) close to the center of the fixing frame (1) is fixedly connected with a rubber pad (9), and the rubber pad (9) is in sliding connection with the limiting frame (6).

2. The butterfly valve with backflow prevention function according to claim 1, wherein: the thread direction of the upper end of the first thread shaft (3) is opposite to the thread direction of the lower end of the first thread shaft (3), the first thread shaft (3) is symmetrically arranged, and the first thread shaft (3) is rotatably connected with the fixing frame (1).

3. The butterfly valve with backflow prevention function according to claim 1, wherein: gasket (5) and baffle (4) fixed connection, and gasket (5) are made by the panel of rubber material, gasket (5) are run through to first threaded shaft (3), and first threaded shaft (3) are connected with gasket (5) rotation.

4. The butterfly valve with backflow prevention function according to claim 1, wherein: the fixture block (7) is kept away from equal sliding connection in the one end left and right sides at mount (1) center and is had locating piece (12), and locating piece (12) run through spacing (6), locating piece (12) and spacing (6) sliding connection, locating piece (12) inboard spiral connection has second threaded spindle (11), the one end fixedly connected with location at mount (1) center is kept away from to second threaded spindle (11) is fixed a position (10), and fixes a position and run through spacing (6) to (10), the location is rotated with spacing (6) to (10).

5. The butterfly valve with backflow prevention function according to claim 4, wherein: the number of the positioning blocks (12) is 4, and the positioning blocks (12) are symmetrically arranged on the inner side of the limiting frame (6).