CN216843231U

CN216843231U - Pneumatic piston diaphragm valve

Info

Publication number: CN216843231U
Application number: CN202220681765.6U
Authority: CN
Inventors: 唐世号
Original assignee: Jiangsu Tanggong Automatic Control Equipment Co ltd
Current assignee: Jiangsu Tanggong Automatic Control Equipment Co ltd
Priority date: 2022-03-28
Filing date: 2022-03-28
Publication date: 2022-06-28
Anticipated expiration: 2032-03-28

Abstract

The utility model relates to the technical field of valves, specifically a pneumatic piston diaphragm valve, one side intercommunication of valve main part is equipped with first connecting pipe, and the first mounting flange of one end fixedly connected with of valve main part is kept away from to first connecting pipe, one side intercommunication that first connecting pipe was kept away from to the valve main part is equipped with the second connecting pipe, and inserts the inner tube in the second connecting pipe, is located the second connecting pipe the one end fixedly connected with slip ring of inner tube, and the inner tube keep away from the one end of the slip ring and extend to the outside and the fixedly connected with second mounting flange of second connecting pipe, the upside one end intercommunication that the valve main part was kept away from to first connecting pipe is equipped with the housing. The utility model discloses in, can drive the inner tube through rotating the hand wheel and come out at second connecting pipe horizontal displacement to realize the regulation of this device length, be convenient for satisfy installation space length demand, it is more convenient to install, need not cut the pipeline, uses manpower sparingly, improves the installation effectiveness.

Description

Pneumatic piston diaphragm valve

Technical Field

The utility model relates to the technical field of valves, specifically a pneumatic piston diaphragm valve.

Background

The diaphragm valve is a stop valve which uses a diaphragm as an opening and closing part to close a flow passage, cut off fluid and separate an inner cavity of a valve body from an inner cavity of a valve cover, the diaphragm is made of elastic, corrosion-resistant and non-permeable materials such as rubber, plastic and the like, the valve body is made of multipurpose plastic, glass fiber reinforced plastic, ceramic or metal lining rubber materials, and the pneumatic diaphragm valve is mainly characterized in that the inner cavity of the lower valve body is separated from the inner cavity of the upper valve cover by the diaphragm, so that parts such as a valve rod, a valve clack and the like above the diaphragm are not corroded by media, a packing sealing structure is omitted, and the media cannot leak.

In a pneumatic piston diaphragm valve (patent No. CN210566418U), the device comprises a valve body, a valve cover and a valve rod, the valve body comprises a medium inlet pipe orifice and a medium outlet pipe orifice, the periphery of the valve body is provided with connecting thread sections, the middle part of the valve body is provided with a sealing lug, the valve cover comprises an upper end cover part, a middle piston cylinder body part and a lower base part, the center of the end cover part is provided with a through hole which is in clearance fit with a sealing shaft at the upper end of the valve rod, the inner side wall of the piston cylinder body part is matched with a piston arranged at the middle part of the valve rod, the base part is fixedly connected with a diaphragm and the valve body through connecting pieces, a positioning sleeve is sleeved in the base part, the valve rod is integrally provided with the sealing shaft, a sleeve shaft, a piston and a pull rod, a pressure spring is sleeved on the sleeve shaft, the device controls the gas pressure in the valve cover through external controllable gas to pull the diaphragm to move up and down, the sealing cover with elasticity arranged at the middle part of the diaphragm can realize the opening and closing action of the sealing lug at the middle part of the valve body, however, the length adjustment of the connecting pipe cannot be realized by the device, so that the device cannot adapt to the requirements of different installation space lengths during installation, the pipeline needs to be trimmed, the installation progress is influenced, the operation steps are complex, and manpower is wasted. Accordingly, one skilled in the art has provided a pneumatic piston diaphragm valve to solve the problems set forth in the background above.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pneumatic piston diaphragm valve 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: a pneumatic piston type diaphragm valve comprises a valve main body, wherein a first connecting pipe is communicated with one side of the valve main body, a first mounting flange is fixedly connected with one end, far away from the valve main body, of the first connecting pipe, a second connecting pipe is communicated with one side, far away from the first connecting pipe, of the valve main body, an inner pipe is inserted into the second connecting pipe, a sliding sleeve ring is fixedly connected with one end of the inner pipe, located in the second connecting pipe, one end, far away from the sliding sleeve ring, of the inner pipe extends to the outer side of the second connecting pipe and is fixedly connected with a second mounting flange, a housing is communicated with one end, far away from the valve main body, of the first connecting pipe, a transversely arranged rotating rod is rotatably connected with one inner wall of one side of the housing through a first bearing seat, one end of the rotating rod penetrates through the outer side of the housing and is located in the housing, a worm is fixedly connected onto the rotating rod, and two inner walls, opposite to the housing, are rotatably connected with a rotating shaft through two second bearing seats, and the cover is equipped with the worm wheel of being connected with the worm meshing on the rotation axis, the cover is equipped with drive gear on the rotation axis, the upside fixedly connected with drive rack of inner tube, one side of drive gear extends to in the second connecting pipe and is connected with the drive rack meshing.

As a further aspect of the present invention: and a hand wheel is fixedly connected to one end of the rotating rod, which is positioned outside the housing, and anti-skid grains are arranged on the outer side wall of the hand wheel.

As a further aspect of the present invention: the outer side wall of the rotating rod is fixedly connected with the inner wall of the through hole of the worm in a welding mode.

As a further aspect of the present invention: the inner side wall of the second connecting pipe is abutted against and slidably connected with the outer side wall of the sliding sleeve ring.

As a further aspect of the present invention: an opening communicated with the housing is formed in the upper side of the first connecting pipe, and one side of the transmission gear penetrates through the opening.

As a further aspect of the present invention: the outer side wall of the rotating shaft is fixedly connected with the inner walls of the through holes of the worm wheel and the transmission gear in a welding mode.

Compared with the prior art, the beneficial effects of the utility model are that: through rotating the hand wheel, drive the bull stick and rotate, and then drive the worm and rotate, because worm and worm wheel meshing, and then drive the rotation axis and rotate, and then realize drive gear's rotation, because drive gear and driving rack meshing, and then drive the inner tube fixed with driving rack and come out at second connecting pipe horizontal displacement, thereby realize the regulation of this device length, thereby be convenient for satisfy installation space length demand, it is more convenient to install, need not cut the pipeline, use manpower sparingly, and the installation effectiveness is improved, and simple easy purchase of spare part, and easy maintenance, long service life.

Drawings

FIG. 1 is a schematic perspective view of a pneumatic piston diaphragm valve;

FIG. 2 is a schematic diagram of a sectional front view of a second connecting pipe in a pneumatic piston diaphragm valve;

fig. 3 is a schematic sectional view of a housing of a pneumatic piston diaphragm valve in a top view.

In the figure: 1. a valve body; 2. a first connecting pipe; 3. a first mounting flange; 4. a second connecting pipe; 5. an inner tube; 6. a slip collar; 7. a second mounting flange; 8. a housing; 9. a rotating rod; 10. a worm; 11. a rotating shaft; 12. a worm gear; 13. a transmission gear; 14. a drive rack; 15. a hand wheel; 16. and (4) opening.

Detailed Description

Referring to fig. 1 to 3, in an embodiment of the present invention, a pneumatic piston diaphragm valve includes a valve body 1, a first connecting pipe 2 is connected to one side of the valve body 1, a first mounting flange 3 is fixedly connected to an end of the first connecting pipe 2 away from the valve body 1, a second connecting pipe 4 is connected to an end of the valve body 1 away from the first connecting pipe 2, an inner pipe 5 is inserted into the second connecting pipe 4, a slip ring 6 is fixedly connected to an end of the inner pipe 5 located in the second connecting pipe 4, an end of the inner pipe 5 away from the slip ring 6 extends to an outer side of the second connecting pipe 4 and is fixedly connected to a second mounting flange 7, a housing 8 is connected to an upper end of the first connecting pipe 2 away from the valve body 1, a horizontally disposed rotating rod 9 is rotatably connected to an inner wall of one side of the housing 8 through a first bearing seat, an end of the rotating rod 9 extends to an outer side of the housing 8, a worm 10 is fixedly connected to a rotating rod 9 positioned in the housing 8, inner walls of two opposite sides of the housing 8 are rotatably connected with a rotating shaft 11 through two second bearing seats, a worm wheel 12 meshed with the worm 10 is sleeved on the rotating shaft 11, a transmission gear 13 is sleeved on the rotating shaft 11, a transmission rack 14 is fixedly connected to the upper side of the inner tube 5, one side of the transmission gear 13 extends into the second connecting tube 4 and is meshed with the transmission rack 14, the rotating rod 9 is rotated to drive the worm 10 to rotate, the worm 10 is meshed with the worm wheel 12 to drive the rotating shaft 11 to rotate, so that the transmission gear 13 is rotated, the transmission gear 13 is meshed with the transmission rack 14, and then the inner tube 5 fixed with the transmission rack 14 is driven to horizontally displace in the second connecting tube 4, thereby realizing the adjustment of the length of the device, and being convenient for meeting the requirement of the length of an installation space, the installation is more convenient, the pipeline does not need to be cut, the labor is saved, and the installation efficiency is improved;

in fig. 3: one end of the rotating rod 9 positioned outside the housing 8 is fixedly connected with a hand wheel 15, and the outer side wall of the hand wheel 15 is provided with anti-skid grains, so that the rotating rod 9 can be conveniently rotated;

in fig. 3: the outer side wall of the rotating rod 9 is fixedly connected with the inner wall of the through hole of the worm 10 in a welding mode, so that the connection is firmer;

in fig. 2: the inner side wall of the second connecting pipe 4 is abutted against and slidably connected with the outer side wall of the sliding sleeve ring 6, so that the sealing property is improved, the inner pipe 5 is more stable in displacement, and the inner pipe 5 is prevented from being separated from the second connecting pipe 4;

in fig. 2: an opening 16 communicated with the housing 8 is formed in the upper side of the first connecting pipe 2, and one side of the transmission gear 13 penetrates through the opening 16, so that the transmission gear 13 can rotate conveniently;

in fig. 3: the outer side wall of the rotating shaft 11 is fixedly connected with the inner walls of the through holes of the worm wheel 12 and the transmission gear 13 in a welding mode, and the connection is firm.

The utility model discloses a theory of operation is: when the length of this device is adjusted according to the installation space length demand to needs, rotate hand wheel 15, drive bull stick 9 and rotate, and then drive worm 10 and rotate, because worm 10 and worm wheel 12 mesh, and then drive rotation axis 11 and rotate, and then realize drive gear 13's rotation, because drive gear 13 meshes with driving rack 14, and then drive the inner tube 5 fixed with driving rack 14 and come out at second connecting pipe 4 horizontal displacement, thereby realize the regulation of this device length, thereby be convenient for satisfy installation space length demand, it is more convenient to install, need not cut the pipeline, use manpower sparingly, and the installation effectiveness is improved.

The above-mentioned, 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. A pneumatic piston type diaphragm valve comprises a valve main body (1) and is characterized in that a first connecting pipe (2) is communicated with one side of the valve main body (1), a first mounting flange (3) is fixedly connected with one end, far away from the valve main body (1), of the first connecting pipe (2) of the valve main body (1), a second connecting pipe (4) is communicated with one side, far away from the first connecting pipe (2), of the valve main body (1), an inner pipe (5) is inserted into the second connecting pipe (4), one end, far away from the sliding sleeve ring (6), of the inner pipe (5) extends to the outer side of the second connecting pipe (4) and is fixedly connected with a second mounting flange (7), a housing (8) is communicated with one end, far away from the valve main body (1), of the first connecting pipe (2), of one side of the inner wall of the housing (8) is rotatably connected with a transversely arranged rotating rod (9) through a first bearing seat, one end of bull stick (9) runs through the outside that extends to housing (8), is located housing (8) fixedly connected with worm (10) on bull stick (9), the both sides inner wall that housing (8) is relative rotates through two second bearing seats and is connected with rotation axis (11), and the cover is equipped with worm wheel (12) of being connected with worm (10) meshing on rotation axis (11), the cover is equipped with drive gear (13) on rotation axis (11), the upside fixedly connected with driving rack (14) of inner tube (5), one side of drive gear (13) extends to in second connecting pipe (4) and is connected with driving rack (14) meshing.

2. A pneumatic piston diaphragm valve according to claim 1, wherein a hand wheel (15) is fixedly connected to one end of the rotary rod (9) outside the housing (8), and the outer side wall of the hand wheel (15) is provided with anti-slip threads.

3. A pneumatic piston diaphragm valve according to claim 1, wherein the outer side wall of the rotating rod (9) is fixedly connected with the inner wall of the through hole of the worm (10) by welding.

4. A pneumatic piston diaphragm valve according to claim 1 where the inside wall of the second connecting tube (4) abuts and is slidably connected to the outside wall of the slip collar (6).

5. A pneumatic piston diaphragm valve according to claim 1, wherein the upper side of the first connection pipe (2) is opened with an opening (16) provided in communication with the housing (8), and one side of the transmission gear (13) is provided through the opening (16).

6. The pneumatic piston diaphragm valve of claim 1, wherein the outer side wall of the rotating shaft (11) is fixedly connected with the inner walls of the through holes of the worm gear (12) and the transmission gear (13) in a welding manner.