CN216519615U

CN216519615U - Radial diaphragm valve

Info

Publication number: CN216519615U
Application number: CN202121978947.1U
Authority: CN
Inventors: 项明荣
Original assignee: ZHEJIANG KEERJIAN LIGHT INDUSTRIAL MACHINERY CO LTD
Current assignee: ZHEJIANG KEERJIAN LIGHT INDUSTRIAL MACHINERY CO LTD
Priority date: 2021-08-23
Filing date: 2021-08-23
Publication date: 2022-05-13
Anticipated expiration: 2031-08-23

Abstract

The utility model discloses a radial diaphragm valve, belonging to the technical field of valves, comprising a valve body, a diaphragm head, a valve rod, a valve cover, a screw, a steel ball, a hand wheel and an inner sleeve, wherein the lowest point of an inner hole at the side outlet of the valve body is level with the arc transition bottom surface of an inner cavity, the inlet and the outlet of the valve body are vertical at 90 degrees, the lowest point of the side outlet of the valve body is level with the arc transition bottom surface of the inner cavity of the valve body, so that no residue is left when a medium flows through the outlet, the circular sealing surface at the bottom of the diaphragm head is sealed with the arc transition sealing surface of the inner cavity of the valve body, the valve rod is driven by a hand wheel to move up and down, so that the upper part of the diaphragm head contracts, bends, opens and pulls up, thereby opening and sealing the ring sealing surface at the bottom of the diaphragm head and the valve body sealing surface, and having the advantages of simplicity, compactness, reliable sealing, temperature resistance and long service life, the device can completely empty the medium, has the characteristics of no residue, cleanness and the like, and is suitable for clean pipelines with high medium requirements.

Description

Radial diaphragm valve

Technical Field

The utility model relates to the technical field of valves, in particular to a radial diaphragm valve.

Background

The valve is a pipeline accessory used for opening and closing a pipeline, controlling the flow direction, adjusting and controlling parameters, temperature, pressure and flow of a conveying medium, is a control part in a fluid conveying system, and has the functions of stopping, adjusting, guiding, preventing backflow, stabilizing pressure, shunting or overflowing and relieving pressure and the like.

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.

In the bio-pharmaceuticals, fine chemistry industry, food chemical industry, especially in the fermentation industry, because the fermentation time is long, in pipeline and valve and easily breed the bacterium, carry before the medium fermentation usually and ferment the back output must carry out high temperature steam sterilization to pipe-line system, current weir formula diaphragm valve is too little because weir and diaphragm contact surface in the middle of the valve body, after the diaphragm receives high temperature steam, the thermal energy softening can appear in the diaphragm, at this moment because the weir contact surface of diaphragm and valve body is too little, the diaphragm is easily crushed or diaphragm life is very short by the valve body weir, the valve is leaked, the medium flows into low reaches pipeline and other medium mixed pollution, lead to whole piece pipe-line system unclean problem simultaneously, can lead to serious production accident.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a radial diaphragm valve, which aims to solve the problem that the contact surface of a weir and a membrane in the middle of a valve body of the existing weir type diaphragm valve is too small, so that the membrane can be thermally expanded and softened after high-temperature steam is applied to the membrane, and at the moment, the contact surface of the membrane and the weir of the valve body is too small, so that the membrane is easily crushed by the weir of the valve body or the service life of the membrane is very short, the valve is leaked, a medium flows into a downstream pipeline to be mixed with other media for pollution, and meanwhile, the whole pipeline system is not clean, and serious production accidents can be caused.

In order to achieve the purpose, the utility model provides the following technical scheme: a radial diaphragm valve comprises a valve body, a diaphragm head, a valve rod, a valve cover, screws, steel balls, a hand wheel and an inner sleeve, wherein the lowest point of an inner hole of a side outlet of the valve body is level with the arc transition bottom surface of an inner cavity, the annular sealing surface at the bottom of the diaphragm head is pressed on the arc transition sealing surface of the inner cavity of the valve body, the upper part of the diaphragm head is pressed on the step at the upper part of the inner cavity of the valve body and is level with the highest point of the inner hole of the outlet of the valve body, so that the diaphragm head and the inner cavity of the valve body form a closed upper valve cavity, the lower part of the valve body flows into the upper valve cavity and flows out from the side outlet of the valve body, the valve body and the diaphragm head are internally spliced with the valve rod, the top of the valve rod is contacted with the valve cover, the inner sleeve is sleeved at the top of the valve cover, the hand wheel is sleeved at the top of the inner sleeve, and the screws are spliced with the top of the valve cover and the hand wheel, the bottom ring sealing surface of the diaphragm head is sealed with the arc transition sealing surface of the inner cavity of the valve body, the upper part of the diaphragm head is sealed with the upper step of the inner cavity of the valve body to form a closed upper valve cavity, and media only contact with the inner cavity of the valve body and the diaphragm head.

Preferably, an O-shaped sealing ring is sleeved on the circumferential outer wall of the valve rod.

Preferably, the circumferential outer wall of the valve stem contacts the steel ball.

Preferably, the bottom ring sealing surface of the diaphragm head is sealed with the arc transition sealing surface of the inner cavity of the valve body, the upper part of the diaphragm head is sealed with the upper step of the inner cavity of the valve body to form a closed upper valve cavity, and the medium is only contacted with the inner cavity of the valve body and the diaphragm head.

Preferably, the valve body, the valve rod, the valve cover, the screw, the steel ball and the hand wheel are all made of stainless steel materials.

Compared with the prior art, the utility model has the beneficial effects that: the radial diaphragm valve has the advantages that through the combined application of accessories, the inlet and the outlet of the valve body are 90 degrees vertical, the lowest point of the outlet on the side of the valve body is level with the arc transition bottom surface of the inner cavity of the valve body, the medium flow through the outlet is ensured to have no residue, the circular sealing surface at the bottom of the diaphragm head is sealed with the arc transition sealing surface of the inner cavity of the valve body, the valve rod is driven by a hand wheel to move up and down, the upper part of the diaphragm head is contracted, bent and stretched to be lifted, and therefore the circular sealing surface at the bottom of the diaphragm head and the sealing surface of the valve body are opened and sealed.

Drawings

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

FIG. 2 is a schematic diagram illustrating the construction of a valve body side outlet according to the present invention;

FIG. 3 is a schematic diagram illustrating the details of the diaphragm head construction of the present invention.

In the figure: 01 valve body, 02 diaphragm head, 03 valve rod, 04O-shaped sealing ring, 05 valve cover, 06 screw, 07 steel ball, 08 hand wheel and 09 inner sleeve.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The utility model provides a radial diaphragm valve, through the combined application of fittings, the valve body inlet is perpendicular to outlet 90 degrees, the lowest point of the valve body side outlet is flush with the circular arc transition bottom surface of the valve body cavity to form a level, it is ensured that no residue exists when the medium flows through the outlet, the circular sealing surface of the bottom of the diaphragm head is sealed with the circular arc transition sealing surface of the valve body cavity, the valve rod is driven by a hand wheel to move up and down, so that the upper part of the diaphragm head is contracted, bent, opened and pulled up, and the circular sealing surface of the bottom of the diaphragm head and the sealing surface of the valve body are opened and sealed, the diaphragm head is simple and compact, the sealing is reliable, the temperature-resistant service life is long, and the characteristics of no residue and cleanness of the completely emptied medium and the like are realized, the diaphragm valve is suitable for a clean pipeline with high medium requirements, please refer to fig. 1, fig. 2 and fig. 3, and comprises a valve body 01, a diaphragm head 02, a valve rod 03, a valve cover 05, a screw 06, a steel ball 07, a hand wheel 08 and an inner sleeve 09;

referring to fig. 1 again, a diaphragm head 02 is arranged inside the valve body 01, specifically, the lowest point of the side outlet inner hole of the valve body 01 is flush with the arc transition bottom surface of the inner cavity to form a horizontal plane, the circular sealing surface at the bottom of the diaphragm head 02 is pressed on the arc transition sealing surface of the inner cavity of the valve body, the upper part of the diaphragm head 02 is pressed on the step at the upper part of the inner cavity of the valve body 01 and is flush with the highest point of the outlet inner hole of the valve body 01 to form a horizontal plane, so that the diaphragm head 02 and the inner cavity of the valve body 01 form a closed upper valve cavity;

referring to fig. 1 again, the top of the valve rod 03 contacts the valve cap 05, specifically, the lower part of the valve body 01 flows into the upper valve cavity and flows out from the side outlet of the valve body 01, the valve rod 03 is inserted into the valve body 01 and the diaphragm head 02, the top of the valve rod 03 contacts the valve cap 05, and the top of the valve cap 05 is sleeved with the inner sleeve 09;

referring to fig. 1 again, the top of the inner sleeve 09 is provided with a hand wheel 08, specifically, the top of the inner sleeve 09 is sleeved with the hand wheel 08, the top of the valve cover 05 and the top of the hand wheel 08 are both inserted with screws 06, the bottom ring sealing surface of the diaphragm head 02 is sealed with the arc transition sealing surface of the inner cavity of the valve body 01, the upper part of the diaphragm head 02 is sealed with the upper step of the inner cavity of the valve body 01 to form a closed upper valve cavity, and the medium is only contacted with the inner cavity of the valve body 01 and the diaphragm head 02;

when the valve is used specifically, firstly, the lowest point of the side outlet inner hole of the valve body 01 is level with the arc transition bottom surface of the inner cavity of the valve body 01, the ring sealing surface at the bottom of the diaphragm head 02 is pressed on the arc transition sealing surface of the inner cavity of the valve body 01, the upper part of the diaphragm head 02 is pressed on the step at the upper part of the inner cavity of the valve body 01 and is level with the highest point of the outlet inner hole of the valve body 01, the lower end of the valve cover 05 is provided with a ring step, the ring step is provided with an O-shaped sealing ring 04, the O-shaped sealing ring 04 is pressed on the upper part of the diaphragm head 02, so that the diaphragm head 02 and the inner cavity of the valve body 01 form a closed upper valve cavity, the inner hole of the valve cover 05 is provided with a guide limiting groove, steel balls 07 are placed in the arc groove of the valve rod 03 and are clamped in the guide limiting groove of the valve cover 05 to ensure that the valve rod 03 can only move up and down and can not rotate axially, one end of the valve rod 03 is fixedly connected with the diaphragm head 02, and the other end is fixedly locked with a hand wheel 08 by a screw 06, an inner sleeve 09 is arranged in the hand wheel 08, the inner sleeve 09 is locked and fixed with the hand wheel 08 through a screw 06, the inner sleeve 09 is provided with an internal thread which is connected and matched with the external thread on the upper part of the valve cover 05, the hand wheel 08 is rotated anticlockwise, the hand wheel 08 drives the valve rod 03 to move upwards, meanwhile, the valve rod 03 pulls the diaphragm head 02 to enable the upper part of the diaphragm head 02 to contract and bend, the bottom of the diaphragm head 02 is separated from the arc transition sealing surface of the inner cavity of the valve body 01, and the valve is opened; the hand wheel 08 is rotated clockwise, the hand wheel 08 drives the valve rod 03 to move downwards, meanwhile, the valve rod 03 pushes the diaphragm head 02 to open and pull the upper part of the diaphragm head 02, the bottom of the diaphragm head 02 is tightly attached to the arc transition sealing surface of the inner cavity of the valve body 01, and the valve is closed.

Referring to fig. 1 again, in order to increase the sealing performance in use, specifically, an O-ring 04 is sleeved on the circumferential outer wall of the valve rod 03.

Referring to fig. 1 again, in order to facilitate the installation of the steel ball 07, specifically, the circumferential outer wall of the valve stem 03 contacts the steel ball 07.

Referring to fig. 1 again, in order to form a closed upper valve cavity, specifically, the bottom circular ring sealing surface of the diaphragm head 02 is sealed with the circular arc transition sealing surface of the inner cavity of the valve body 01, the upper part of the diaphragm head 02 is sealed with the upper step of the inner cavity of the valve body 01, and a closed upper valve cavity is formed, and the medium only contacts with the inner cavity of the valve body 01 and the diaphragm head 02.

Referring to fig. 1 again, in order to increase the service life, specifically, the valve body 01, the valve rod 03, the valve cap 05, the screw 06, the steel ball 07 and the hand wheel 08 are made of stainless steel.

While the utility model has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model. In particular, the various features of the embodiments disclosed herein may be used in any combination, provided that there is no structural conflict, and the combinations are not exhaustively described in this specification merely for the sake of brevity and conservation of resources. Therefore, it is intended that the utility model not be limited to the particular embodiments disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.

Claims

1. A radial diaphragm valve, characterized by: the diaphragm valve comprises a valve body (01), a diaphragm head (02), a valve rod (03), a valve cover (05), a screw (06), steel balls (07), a hand wheel (08) and an inner sleeve (09), wherein the lowest point of an inner hole of a side outlet of the valve body (01) and the circular arc transition bottom surface of the inner hole are parallel and level, the circular sealing surface at the bottom of the diaphragm head (02) is pressed on the circular arc transition sealing surface of the inner hole of the valve body, the upper part of the diaphragm head (02) is pressed on the step at the upper part of the inner hole of the valve body (01) and is parallel and level with the highest point of the inner hole of the outlet of the valve body (01), so that the diaphragm head (02) and the inner hole of the valve body (01) form a closed upper valve cavity, the lower part of the valve body (01) flows into the upper valve cavity and flows out from the side outlet of the valve body (01), the valve rod (03) is inserted into the valve body (01) and the diaphragm head (02), and the top of the valve rod (03) contacts with the valve cover (05), the top of the valve cover (05) is sleeved with an inner sleeve (09), the top of the inner sleeve (09) is sleeved with a hand wheel (08), the tops of the valve cover (05) and the hand wheel (08) are all inserted with the screw (06), the bottom ring sealing surface of the diaphragm head (02) is sealed with the arc transition sealing surface of the inner cavity of the valve body (01), the upper part of the diaphragm head (02) is sealed with the upper step of the inner cavity of the valve body (01) to form a sealed upper valve cavity, and a medium is only contacted with the inner cavity of the valve body (01) and the diaphragm head (02).

2. A radial diaphragm valve according to claim 1, wherein: and an O-shaped sealing ring (04) is sleeved on the circumferential outer wall of the valve rod (03).

3. A radial diaphragm valve according to claim 1, wherein: the circumferential outer wall of the valve rod (03) is in contact with the steel ball (07).

4. A radial diaphragm valve according to claim 1, wherein: the bottom ring sealing surface of the diaphragm head (02) is sealed with the arc transition sealing surface of the inner cavity of the valve body (01), the upper part of the diaphragm head (02) is sealed with the upper step of the inner cavity of the valve body (01) to form a closed upper valve cavity, and a medium is only contacted with the inner cavity of the valve body (01) and the diaphragm head (02).

5. A radial diaphragm valve according to claim 1, wherein: the valve body (01), the valve rod (03), the valve cover (05), the screw (06), the steel ball (07) and the hand wheel (08) are all made of stainless steel.