CN210344317U

CN210344317U - Butterfly valve with lower limiting device

Info

Publication number: CN210344317U
Application number: CN201921014193.0U
Authority: CN
Inventors: 李雷; 关丽君; 林晓青; 胡旭; 刘春明
Original assignee: Shenyang Shengshi High And Middle Pressure Valve Co ltd
Current assignee: Shenyang Shengshi High And Middle Pressure Valve Co ltd
Priority date: 2019-06-27
Filing date: 2019-06-27
Publication date: 2020-04-17
Anticipated expiration: 2029-06-27

Abstract

The utility model discloses a butterfly valve of stop device under area, including lower valve shaft, O type rubber seal, screw and rear end cap, the top fixedly connected with dead lever of lower valve shaft, the right side of screw is inlayed and is equipped with antifriction bearing, and the interior fixedly connected with pivot of antifriction bearing, and the one end fixedly connected with chucking piece of screw is kept away from in the pivot, and first recess has been seted up at the top of chucking piece, and fixedly connected with chucking mechanism in the first recess, the second recess has all been seted up to two upper and lower inside walls of lower valve shaft, fixedly connected with stop gear in the second recess. The utility model discloses can be better prevent that the screw on the rear end cap from unscrewing, can conveniently carry on spacingly to O type rubber seal simultaneously, avoid it to break away from original position.

Description

Butterfly valve with lower limiting device

Technical Field

The utility model relates to a butterfly valve technical field especially relates to a butterfly valve of stop device under area.

Background

A butterfly valve, also called a flap valve, is a regulating valve with a simple structure, and can be used for on-off control of low-pressure pipeline media, namely a valve with a closing part (a valve clack or a butterfly plate) which is a disc and rotates around a valve shaft to open and close, and 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. The pipe mainly plays a role in cutting off and throttling. The butterfly valve opening and closing piece is a disc-shaped butterfly plate and rotates around the axis of the butterfly plate in the valve body, so that the opening and closing or adjusting purpose is achieved.

Through search, the patent with the Chinese patent authorization number of CN207131876U discloses a butterfly valve with a lower limiting device, which comprises a lower valve shaft, an O-shaped rubber sealing ring, a screw and a rear end cover. The butterfly valve with the lower limiting device in the patent has the following defects: in this patent, when utilizing the screw to install the rear end housing, because of the butterfly valve when using, rivers can produce the impact force to the butterfly valve, can lead to the butterfly valve to rock, lead to the screw on the butterfly valve to unscrew easily to influence the normal use of butterfly valve.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving among the prior art when utilizing the screw to install the rear end cap, because of the butterfly valve when using, rivers can produce the impact force to the butterfly valve, can lead to the butterfly valve to rock, lead to the screw on the butterfly valve to screw out easily to influence the problem of butterfly valve normal use, and the butterfly valve of a stop device under the area that provides.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a butterfly valve of stop device under area, includes lower valve shaft, O type rubber seal, screw and rear end cap, the top fixedly connected with dead lever of lower valve shaft, the right side of screw inlays and is equipped with antifriction bearing, and the interior fixedly connected with pivot of antifriction bearing, the one end fixedly connected with chucking piece of screw is kept away from in the pivot, first recess has been seted up at the top of chucking piece, fixedly connected with chucking mechanism in the first recess, the second recess has all been seted up to two upper and lower inside walls of lower valve shaft, fixedly connected with stop gear in the second recess.

Preferably, the chucking mechanism includes the first spring with first recess lateral wall fixed connection, the one end fixedly connected with gag lever post of first recess lateral wall is kept away from to first spring, the opening part of first recess is passed and the rotation is connected with universal ball to the one end that first spring was kept away from to the gag lever post, the spacing hole corresponding with the gag lever post is seted up on the surface of dead lever.

Preferably, the side wall of the limiting rod is fixedly connected with a first sliding block, and the side wall of the first groove is provided with a first sliding chute in matched connection with the first sliding block.

Preferably, one side of the limiting rod, which is far away from the first sliding block, is fixedly connected with a pull rod, and one side of the first groove, which is far away from the first sliding groove, is provided with a strip-shaped opening corresponding to the pull rod.

Preferably, stop gear includes a plurality of second springs with second recess lateral wall fixed connection, and is a plurality of the common fixedly connected with of one end of second recess lateral wall and the corresponding splint of O type rubber seal are kept away from to the second spring, two triangle fixture blocks of one side fixedly connected with of second spring are kept away from to splint, the draw-in groove corresponding with triangle fixture block has all been seted up to the upper and lower both sides of rear end cap.

Preferably, the equal fixedly connected with second slider in both sides about the splint, the second spout of second slider accordant connection is all seted up to the left and right sides of second recess.

Compared with the prior art, the utility model provides a butterfly valve of stop device under area possesses following beneficial effect:

1. this butterfly valve with lower limiting device, through being provided with the pivot, the chucking piece, first spring, gag lever post and dead lever, when using the screw to install the rear end cap, install the screw in the screw hole earlier, rotate the chucking piece, the position in gag lever post and dead lever spacing hole on adjusting the chucking piece, the pulling pull rod, the pull rod slides in the bar opening, and the pulling gag lever post, the gag lever post slides in first spout through first slider, and pulling universal ball, gag lever post extrusion first spring, first spring is inwards shrunk, and drive universal ball and gag lever post and stretch into in the first recess on the chucking piece, when gag lever post and spacing hole correspond, first spring promotes the gag lever post, the gag lever post promotes universal ball and stretches out the spacing hole on the dead lever, can be better prevent the screw on the rear end cap from screwing out.

2. This butterfly valve with stop device down, through being provided with the second spring, splint and triangle fixture block, when installing O type rubber seal, install the rear end cap on the lower valve shaft, when the triangle fixture block in the second recess corresponds with the draw-in groove on the rear end cap, a plurality of second springs promote splint jointly, splint promote the triangle fixture block, splint grasp O type rubber seal, triangle fixture block on the splint stretches into in the draw-in groove on the rear end cap, can conveniently carry on spacingly to O type rubber seal, avoid it to break away from original position.

The part that does not relate to among the device all is the same with prior art or can adopt prior art to realize, the utility model discloses can be better prevent that the screw on the rear end cap from backing out, can conveniently carry on spacingly to O type rubber seal simultaneously, avoid it to break away from original position.

Drawings

Fig. 1 is a schematic structural view of a butterfly valve with a lower limiting device according to the present invention;

fig. 2 is a schematic structural diagram of a portion a of a butterfly valve with a lower limiting device according to the present invention;

fig. 3 is a schematic structural diagram of a portion B of the butterfly valve with a lower limiting device according to the present invention.

In the figure: 1 lower valve shaft, 2O type rubber seal, 3 screws, 4 rear end covers, 5 fixed rods, 6 rotating shafts, 7 clamping blocks, 8 first grooves, 9 clamping mechanisms, 10 second grooves, 11 limiting mechanisms, 12 first springs, 13 limiting rods, 14 universal balls, 15 pull rods, 16 second springs, 17 clamping plates and 18 triangular clamping blocks.

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.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-3, a butterfly valve with lower limiting device, including lower valve shaft 1, O type rubber seal 2, screw 3 and rear end cap 4, the top fixedly connected with dead lever 5 of lower valve shaft 1, the right side of screw 3 is inlayed and is equipped with antifriction bearing, and fixedly connected with pivot 6 in the antifriction bearing, the one end fixedly connected with chucking piece 7 of screw 3 is kept away from to pivot 6, first recess 8 has been seted up at chucking piece 7's top, fixedly connected with chucking mechanism 9 in the first recess 8, second recess 10 has all been seted up to two upper and lower inside walls of lower valve shaft 1, fixedly connected with stop gear 11 in second recess 10.

Chucking mechanism 9 includes first spring 12 with 8 lateral walls of first recess fixed connection, and the one end fixedly connected with gag lever post 13 of 8 lateral walls of first recess is kept away from to first spring 12, and gag lever post 13 is kept away from the one end of first spring 12 and is passed the opening part of 8 first recesses and rotate and be connected with universal ball 14, and the spacing hole corresponding with gag lever post 13 has been seted up on the surface of dead lever 5, can be better prevent that screw 3 on the rear end cap 4 from unscrewing.

The first slider of lateral wall fixedly connected with of gag lever post 13, the first spout with first slider accordant connection is seted up to the lateral wall of first recess 8, can conveniently carry on spacingly to gag lever post 13.

One side fixedly connected with pull rod 15 that first slider was kept away from to gag lever post 13, the bar opening corresponding with pull rod 15 is seted up to one side that first spout was kept away from to first recess 8, can conveniently stimulate gag lever post 13.

Stop gear 11 includes a plurality of second springs 16 with second recess 10 lateral wall fixed connection, the common fixedly connected with of one end and the corresponding splint 17 of O type rubber seal 2 of second recess 10 lateral wall are kept away from to a plurality of second springs 16, splint 17 keeps away from two triangle fixture blocks 18 of one side fixedly connected with of second spring 16, the draw-in groove corresponding with triangle fixture block 18 has all been seted up to the upper and lower both sides of rear end cap 4, can conveniently carry on spacingly to O type rubber seal 2, avoid it to break away from original position.

The equal fixedly connected with second slider in the left and right sides of splint 17, second slider accordant connection's second spout is all seted up to the left and right sides of second recess 10, can conveniently carry on spacingly to splint 17.

In the utility model, when the screw 3 is used for installing the rear end cap 4, the screw 3 is firstly installed in the screw hole, the clamping block 7 is rotated, the positions of the limiting holes on the limiting rod 13 and the fixed rod 5 on the clamping block 7 are adjusted, the pull rod 15 is pulled, the pull rod 15 slides in the strip-shaped opening and pulls the limiting rod 13, the limiting rod 13 slides in the first chute through the first slide block and pulls the universal ball 14, the limiting rod 13 extrudes the first spring 12, the first spring 12 contracts inwards and drives the universal ball 14 and the limiting rod 13 to extend into the first groove 8 on the clamping block 7, when the limiting rod 13 corresponds to the limiting hole, the first spring 12 pushes the limiting rod 13, the limiting rod 13 pushes the universal ball 14 to extend out of the limiting hole on the fixed rod 5, the screw 3 on the rear end cap 4 can be better prevented from screwing out, when the O-shaped rubber sealing ring 2 is installed, the rear end cap 4 is installed on the lower end cap 1, when the triangular clamping block 18 in the second groove 10 corresponds to the clamping groove in the rear end cover 4, the plurality of second springs 16 jointly push the clamping plate 17, the clamping plate 17 pushes the triangular clamping block 18, the O-shaped rubber sealing ring 2 is clamped by the clamping plate 17, and the triangular clamping block 18 on the clamping plate 17 extends into the clamping groove in the rear end cover 4, so that the O-shaped rubber sealing ring 2 can be conveniently limited, and the O-shaped rubber sealing ring is prevented from being separated from the original position.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a butterfly valve of stop device under area, includes lower valve shaft (1), O type rubber seal (2), screw (3) and rear end cap (4), its characterized in that, top fixedly connected with dead lever (5) of lower valve shaft (1), the right side of screw (3) is inlayed and is equipped with antifriction bearing, and fixedly connected with pivot (6) in the antifriction bearing, the one end fixedly connected with chucking piece (7) of screw (3) are kept away from in pivot (6), first recess (8) have been seted up at the top of chucking piece (7), fixedly connected with chucking mechanism (9) in first recess (8), second recess (10) have all been seted up to two upper and lower inside walls of lower valve shaft (1), fixedly connected with stop gear (11) in second recess (10).

2. The butterfly valve with the lower limiting device according to claim 1, wherein the clamping mechanism (9) comprises a first spring (12) fixedly connected with the side wall of the first groove (8), a limiting rod (13) is fixedly connected to one end of the first spring (12) far away from the side wall of the first groove (8), one end of the limiting rod (13) far away from the first spring (12) penetrates through the opening of the first groove (8) and is rotatably connected with a universal ball (14), and a limiting hole corresponding to the limiting rod (13) is formed in the surface of the fixing rod (5).

3. The butterfly valve with the lower limiting device according to claim 2, wherein a first sliding block is fixedly connected to a side wall of the limiting rod (13), and a first sliding groove in matched connection with the first sliding block is formed in a side wall of the first groove (8).

4. The butterfly valve with the lower limiting device according to claim 2, wherein a pull rod (15) is fixedly connected to one side of the limiting rod (13) away from the first sliding block, and a strip-shaped opening corresponding to the pull rod (15) is formed in one side of the first groove (8) away from the first sliding groove.

5. The butterfly valve with the lower limiting device according to claim 1, wherein the limiting mechanism (11) comprises a plurality of second springs (16) fixedly connected with the side wall of the second groove (10), one ends of the plurality of second springs (16) far away from the side wall of the second groove (10) are fixedly connected with a clamping plate (17) corresponding to the O-shaped rubber sealing ring (2), one side of the clamping plate (17) far away from the second springs (16) is fixedly connected with two triangular clamping blocks (18), and clamping grooves corresponding to the triangular clamping blocks (18) are formed in the upper side and the lower side of the rear end cover (4).

6. The butterfly valve with the lower limiting device according to claim 5, wherein the left and right sides of the clamping plate (17) are fixedly connected with second sliding blocks, and the left and right sides of the second groove (10) are provided with second sliding grooves in matching connection with the second sliding blocks.