CN212480152U

CN212480152U - Soft sealing butterfly valve

Info

Publication number: CN212480152U
Application number: CN202020423563.2U
Authority: CN
Inventors: 李昂
Original assignee: Tianjin Yishunyuan Valve Co ltd
Current assignee: Tianjin Yishunyuan Valve Co ltd
Priority date: 2020-03-30
Filing date: 2020-03-30
Publication date: 2021-02-05
Anticipated expiration: 2030-03-30

Abstract

The utility model discloses a soft sealing butterfly valve, which comprises an outer shell, the shell is the hollow cylinder structure, the inside wall of shell runs through and welds the inner tube that has the symmetry to set up, shell inner wall rotates and is connected with inner tube complex video disc, video disc lateral wall veneer has sealed the pad, two rotary troughs, and two have been seted up to the outer wall of shell the inside all sealed rotation of rotary trough is connected with the pivot device, shell inner wall symmetry rotation is connected with first reciprocal lead screw and the reciprocal lead screw of second, all install on first reciprocal lead screw and the reciprocal lead screw of second and open the closed closure device of opening to the video disc. The utility model discloses a set up the video disc of two of symmetry, can multiple protection sealed pad, first video disc reduces fluidic velocity of flow to reduce the pressure that the sealing washer received in the second video disc, reduce because of the closed in-process liquid velocity of flow increase of video disc causes the sealed wearing and tearing that fill up.

Description

Soft sealing butterfly valve

Technical Field

The utility model relates to a butterfly valve technical field especially relates to soft seal butterfly valve.

Background

A butterfly valve, also called a flap valve, is a regulating valve with simple structure, and can be used for the on-off control of low-pressure pipeline media, namely a valve with a closing member (a valve clack or a butterfly plate) which is a disc and rotates around a valve shaft to open and close.

The butterfly valve that uses at present focuses on the sealed effect of the sealing member of strengthening between video disc and the valve casing, the higher sealing member of intensity can be selected for use usually, but in the use, because the continuous erosion and the inside great pressure of liquid, the damage of sealing member has been aggravated, in the continuous use of valve, owing to need frequently to rotate dish board control rivers, make constantly rubbing between sealing strip and the shell lateral wall, also can aggravate the damage of sealing strip, make the sealing performance of valve can not be guaranteed effectively for a long time even if the sealing member, make the sealing performance of valve unstable.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that the sealing effect is poor in the prior art and providing a soft sealing butterfly valve.

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

soft sealing butterfly valve, which comprises an outer shell, the shell is the hollow cylinder structure, the inside wall of shell runs through and the welding has the inner tube that the symmetry set up, the shell inner wall rotates and is connected with inner tube complex video disc, the video disc lateral wall veneer has sealed the pad, two rotary chutes have been seted up to the outer wall of shell, and two the inside all sealed rotations in rotary chute are connected with the pivot device, shell inner wall symmetry rotation is connected with first reciprocal lead screw and the reciprocal lead screw of second, all install on first reciprocal lead screw and the reciprocal lead screw of second and open the closed closing device that opens to the video disc.

Preferably, initiative pivot part and driven pivot part all include a circular frame, the circular frame lateral wall and the rotary groove inner wall fixed connection of driven pivot part, circular frame inner wall rotates and is connected with first one-way bearing, first one-way bearing inner wall fixed connection has first montant, first montant upper end welded fastening has from the driving wheel.

Preferably, the one-way bearing of circular frame inner wall fixedly connected with second of initiative pivot part, the one-way bearing inner wall fixedly connected with second montant of second, second montant lateral wall welded fastening has the action wheel, just the action wheel passes through the hold-in range and is connected from the driving wheel, second montant upper end welded fastening has the runner.

Preferably, the opening and closing device comprises a screw nut in threaded connection with the side walls of the first reciprocating screw and the second reciprocating screw, and the side wall of the screw nut is rotatably connected with the side wall of the disc through a connecting rod.

Preferably, the disc is a circular plate-shaped structure, and the outer ring diameter of the disc is larger than the inner diameter of the inner pipe.

Preferably, the upper ends of the first reciprocating lead screw and the second reciprocating lead screw penetrate through the inner wall of the shell and are welded and fixed with the lower ends of the corresponding circular frames, and the rotating directions of the first one-way bearing and the second one-way bearing are opposite.

Compared with the prior art, the utility model has the advantages of:

1. in the device, a whole traditional disc plate rotates along with a rotating shaft and is replaced by a covering type disc with one end connected in a rotating mode, so that the impact force of fluid on the disc is reduced, two symmetrical discs are arranged, the sealing gasket can be protected in multiple ways, the first disc reduces the flow velocity of the fluid, the pressure on the sealing ring in the second disc is reduced, and the abrasion of the sealing gasket caused by the increase of the flow velocity of the liquid in the closing process of the discs is reduced;

2. because the diameter of the disc is larger than the inner diameter of the inner pipe, the second disc can be tightly abutted against the side wall of the inner pipe to form a barrier, under the condition that the water flow pressure is gradually increased, the disc is more tightly abutted against the inner pipe, the valve cannot be flushed due to overlarge liquid flow velocity to cause valve failure, and the stability of the sealing performance of the valve can be effectively ensured.

Drawings

Fig. 1 is a schematic structural view of a soft seal butterfly valve provided by the present invention;

fig. 2 is an enlarged schematic view of a portion a in fig. 1.

In the figure: the device comprises a shell 1, an inner tube 2, a rotary groove 3, a circular frame 4, a first one-way bearing 5, a second one-way bearing 6, a first vertical rod 7, a second vertical rod 8, a driving wheel 9, a driven wheel 10, a first reciprocating lead screw 11, a second reciprocating lead screw 12, a disc 13, a lead screw nut 14, a connecting rod 15 and a sealing gasket 16.

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.

Referring to fig. 1-2, the soft seal butterfly valve comprises a housing 1, the housing 1 is a hollow cylinder structure, the inner wall of the housing 1 penetrates through and is welded with inner pipes 2 which are symmetrically arranged, the inner wall of the housing 1 is rotatably connected with a disc 13 which is matched with the inner pipes 2, the side wall of the disc 13 is glued with a sealing gasket 16, the outer wall of the housing 1 is provided with two rotary grooves 3, the insides of the two rotary grooves 3 are respectively and rotatably connected with a rotating shaft device in a sealing manner, the inner wall of the housing 1 is rotatably connected with a first reciprocating lead screw 11 and a second reciprocating lead screw 12 in a symmetrical manner, and the first reciprocating lead screw 11 and the second reciprocating lead screw 12 are respectively provided.

The driving rotating shaft component and the driven rotating shaft component comprise circular frames 4, the side walls of the circular frames 4 of the driven rotating shaft component are fixedly connected with the inner walls of the rotating grooves 3, the inner walls of the circular frames 4 are rotatably connected with first one-way bearings 5, first vertical rods 7 are fixedly connected with the inner walls of the first one-way bearings 5, and driven wheels 10 are fixedly welded at the upper ends of the first vertical rods 7.

4 inner wall fixedly connected with second one-way bearing 6 of circular frame of initiative pivot part, 6 inner wall fixedly connected with second montant 8 of second one-way bearing, 8 lateral walls welded fastening of second montant have the action wheel 9, and the action wheel 9 passes through the hold-in range and is connected from

driving wheel

10, and 8 upper end welded fastening of second montant have the runner.

The opening and closing device comprises a screw nut 14 in threaded connection with the side walls of the first reciprocating screw 11 and the second reciprocating screw 12, the side wall of the screw nut 14 is rotatably connected with the side wall of the disc 13 through a connecting rod 15, and the first reciprocating screw 11 and the second reciprocating screw 12 rotate to enable the screw nut 14 to move on the side wall of the screw nut, so that the connecting rod 15 is driven to move to open and close the disc 13.

The disc 13 is in a circular plate-shaped structure, the diameter of the outer ring of the disc 13 is larger than the inner diameter of the inner pipe 2, so that the valve failure caused by the fact that the valve is opened due to overlarge liquid flow speed is avoided, and the stability of the sealing performance of the valve can be effectively guaranteed.

The upper ends of the first reciprocating screw rod 11 and the second reciprocating screw rod 12 penetrate through the inner wall of the shell 1 and are fixedly welded with the lower end of the corresponding circular frame 4, and the rotating directions of the first one-way bearing 5 and the second one-way bearing 6 are opposite.

In the utility model, when the butterfly valve needs to be opened, assuming that water flows from left to right, the rotating handle is rotated in a forward direction at the moment to drive the second vertical rod 8 fixed to the lower end of the rotating handle to rotate, the driving wheel 9 fixedly connected to the side wall of the second vertical rod 8 is driven to rotate, the driving wheel 9 drives the driven wheel 10 to rotate through the synchronous belt, the first vertical rod 7 fixedly connected to the side wall of the driven wheel 10 is driven to rotate, the circular frame 4 fixedly connected to the side wall of the second one-way bearing 6 is stationary at the moment, the circular frame 4 fixedly connected to the side wall of the first one-way bearing 5 is driven to rotate under the action of the first one-way bearing 5 and the second one-way bearing 6, and then the first reciprocating lead screw 11 fixedly connected to the lower end of the circular frame 4 is driven to rotate, the lead screw nut 14 in threaded connection with the side wall of the first reciprocating lead screw 11 moves upwards, the inner tube 2 on the right side is communicated, then the rotating handle is rotated reversely, at the moment, the circular frame 4 fixedly connected with the side wall of the first one-way bearing 5 is still, the circular frame 4 fixedly connected with the side wall of the second one-way bearing 6 rotates to drive the second reciprocating screw 12 fixedly connected with the lower end of the circular frame 4 to rotate, so that the screw nut 14 drives the disc 13 to rotate upwards through the connecting rod 15, the inner tube 2 on the left side is communicated, and the butterfly valve is opened;

when closing the butterfly valve, the hand is rotated in the reverse rotation for the reciprocal lead screw 12 of second drives screw nut 14 and moves down, and then promotes video disc 13 through connecting rod 15 and seals left inner tube 2, has accomplished the rivers in the shell 1 back, and the hand is rotated in the forward rotation for first reciprocal lead screw 11 drives screw nut 14 and moves down, and then promotes video disc 13 through connecting rod 15 and seals left inner tube 2, accomplishes closing to the butterfly valve.

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. Soft sealing butterfly valve, including shell (1), its characterized in that, shell (1) is the hollow cylinder structure, the inside wall of shell (1) runs through and the welding has inner tube (2) that the symmetry set up, shell (1) inner wall rotates and is connected with inner tube (2) complex video disc (13), video disc (13) lateral wall veneer has sealed the pad (16), two rotary tank (3), and two have been seted up to the outer wall of shell (1) rotary tank (3) inside all sealed rotation is connected with the pivot device, shell (1) inner wall symmetry rotation is connected with first reciprocal lead screw (11) and the reciprocal lead screw (12) of second, all install on first reciprocal lead screw (11) and the reciprocal lead screw (12) of second and open the closed closing device that opens to video disc (13).

2. The flexible seal butterfly valve according to claim 1, wherein the rotating shaft device comprises a driving rotating shaft part and a driven rotating shaft part, the driving rotating shaft part and the driven rotating shaft part each comprise a circular frame (4), the side wall of the circular frame (4) of the driven rotating shaft part is fixedly connected with the inner wall of the rotating groove (3), the inner wall of the circular frame (4) is rotatably connected with a first one-way bearing (5), the inner wall of the first one-way bearing (5) is fixedly connected with a first vertical rod (7), and a driven wheel (10) is fixedly welded at the upper end of the first vertical rod (7).

3. The flexible seal butterfly valve according to claim 2, characterized in that a second one-way bearing (6) is fixedly connected to the inner wall of the circular frame (4) of the driving shaft member, a second vertical rod (8) is fixedly connected to the inner wall of the second one-way bearing (6), a driving wheel (9) is fixedly welded to the side wall of the second vertical rod (8), the driving wheel (9) is connected with a driven wheel (10) through a synchronous belt, and a handle is fixedly welded to the upper end of the second vertical rod (8).

4. The soft seal butterfly valve according to claim 1, wherein the opening and closing means comprises a lead screw nut (14) in threaded connection with the side walls of the first reciprocating lead screw (11) and the second reciprocating lead screw (12), the side wall of the lead screw nut (14) being in rotational connection with the side wall of the disc (13) through a connecting rod (15).

5. The butterfly valve according to claim 4, characterized in that said disc (13) is a circular plate-like structure, the outer diameter of said disc (13) being greater than the inner diameter of the inner tube (2).

6. The soft seal butterfly valve according to claim 3, characterized in that the upper ends of the first reciprocating screw (11) and the second reciprocating screw (12) both penetrate through the inner wall of the housing (1) and are welded and fixed with the lower end of the corresponding circular frame (4), and the rotation directions of the first one-way bearing (5) and the second one-way bearing (6) are opposite.