Diaphragm valve
A diaphragm valve and diaphragm technology, which is used in the field of pipeline system engineering in various industries, can solve the problems of poor pressure resistance, aging and temperature resistance of diaphragm pads, etc., and achieve the effect of extending pressure resistance, improving temperature resistance and avoiding aging.
Active Publication Date: 2012-01-25
XUANDA IND GRP
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Problems solved by technology
[0004] In order to solve the technical problems of existing diaphragm pads such as easy aging and poor temperature resistance and pressure resistance; the invention provides a diaphragm valve, which can effectively prevent the diaphragm pad from aging and significantly improve the temperature and resistance Pressure performance, thereby improving the sealing performance of the valve and prolonging the service life of the valve, expanding the scope of use of the valve
Method used
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Embodiment Construction
[0010] Embodiments of the present invention will be further described below in conjunction with accompanying drawings: figure 1 As shown, a diaphragm valve of the present invention includes a valve body 1, a valve cover 2, a valve stem 3, a valve flap 4, and a diaphragm member 5. The valve body 1 is provided with a plastic lining layer 6, and the valve body 1 is provided with a plastic lining layer 6. The bonnet 2 is fixedly connected with the valve body 1, and one end of the valve stem 3 passes through the bonnet 2 and is fixedly connected with the valve disc 4. The diaphragm 5 includes a diaphragm 51 and a diaphragm pad 52, and the diaphragm 5 51 is fixedly connected with the disc 4 and its surrounding edges are placed between the valve cover 2 and the valve body 1, in order to solve the technical problems such as the existing diaphragm pad 52 is prone to aging and has poor temperature resistance and pressure resistance; Diaphragm pad 52 is made up of a plurality of mutually...
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The invention relates to a diaphragm valve and mainly solves technical problems of easy ageing, poor temperature tolerance and poor pressure resistance of conventional diaphragm pads. The diaphragm valve is characterized in that: a diaphragm pad is overlaid sequentially by a plurality of independent concentric annular metallic washers from inside to outside; an inside washer of the diaphragm pad is sleeved on a valve clack and the outside wall of an outside washer is in fit with the inside wall of a valve deck; the diaphragm pad is arranged between the valve clack and a diaphragm piece; and one end of each of the plurality of washers is in fit with the end face of the diaphragm piece and moves together with the bending of the diaphragm piece, so that the one end of each of the plurality of washers is always in fit with the end face of the diaphragm piece. The diaphragm valve has the advantages that: the diaphragm pad is made of a metallic material and is overlaid by the plurality of washers, so that the diaphragm pad is prevented from ageing, the temperature tolerance and pressure resistance of the diaphragm pad are greatly improved and the service life of the valve is prolonged.
Description
technical field [0001] The invention relates to a valve, more specifically to a diaphragm valve, which is mainly used in the field of pipeline system engineering in various industries. Background technique [0002] Diaphragm valves are mainly used in pipeline systems for conveying corrosive media. The working principle is to use rubber or plastic diaphragms to isolate the media from the driving parts of the valve to prevent the driving parts of the valve from being corroded by the media and ensure the normal use of the valve. [0003] The existing diaphragm valve mainly includes a valve body, a bonnet, a valve stem, a valve disc, a diaphragm pad and a diaphragm, and a plastic lining layer is provided in the valve body, and one end of the valve stem is fixedly connected to the valve disc. The diaphragm pad is placed above the diaphragm and the diaphragm and the diaphragm are fixedly connected to the valve stem. The surrounding edges of the diaphragm and the diaphragm are plac...
Claims
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IPC IPC(8): F16K7/16
Inventor 吕永和史庆泰叶际宣林忠海
Owner XUANDA IND GRP