Membrane for reciprocating hydraulic ore slurry membrane pump and manufacturing method thereof

A manufacturing method and technology of diaphragm pump, applied in the direction of variable displacement pump components, pumps, pump components, etc., can solve problems such as affecting the service life of hydraulic slurry pumps, low tear resistance and affecting the service life of diaphragms, etc. Achieve the effect of low flexural deformation stress, low strength failure sensitivity, and low surface friction coefficient

Inactive Publication Date: 2008-07-16
重庆水泵厂有限责任公司
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Problems solved by technology

Due to the erosion and wear of the medium particles and the impact damage of the limit flow orifice, the rubber diaphragm is partially damaged, and the ability of the rubber diaphragm to resist tearing and damage will be greatly reduced after the surface of the rubber diaphragm is worn, which will affect the service life of the diaphragm. And then affect the service life of the hydraulic slurry pump

Method used

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  • Membrane for reciprocating hydraulic ore slurry membrane pump and manufacturing method thereof

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with accompanying drawing.

[0024] Polytetrafluoroethylene diaphragms are widely used in hydraulic diaphragm metering pumps, but they are all flat-shaped structures, and the diameter and thickness of the diaphragms are relatively small. Restrictions are also limited in terms of strength and deformation, which is the main reason why PTFE diaphragms have not been used in reciprocating hydraulic diaphragm pumps for a long time.

[0025] Considering the abrasiveness and conveying temperature of the pulp medium, the present invention adopts polytetrafluoroethylene with a relatively large thickness as the diaphragm material and molds it into an annular corrugated shape, as shown in Figure 1, and utilizes the ductility of the corrugated busbar to increase the deformation space. Under the same chamber diameter, the chamber volume is designed to be 3 to 5 times that of the flat diaphragm. Since the expanded l...

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Abstract

The invention discloses a diaphragm used for a reciprocating hydraulic pulp diaphragm pump, which adopts a polytetrafluoroethylene material. The diaphragm is a cirque wave-shape and sequentially gained by the production process of the material preparation, press molding, sintering, quenching, multi-directional rolling, and hot press molding. The invention has higher bearing strength compared with the strength of a rubber, thus ensuring the strength; the invention has better temperature resistance performance and wide applicable range; furthermore, the invention can always keep corrugated structure under the severe working conditions of high temperature and high pressure; the abrasion has small damage sensitiveness to the strength of the polytetrafluoroethylene diaphragm, and the service life of the polytetrafluoroethylene diaphragm can be prolonged in flexible motion.

Description

technical field [0001] The invention relates to a diaphragm for a reciprocating hydraulic slurry diaphragm pump, and also relates to a manufacturing method of the diaphragm. The diaphragm provided by the present invention is applied to large and medium flow reciprocating hydraulic slurry diaphragm pumps, and this pump is suitable for conveying a flow rate of 20-500M 3 / h, pressure ≤ 12.0MPa, temperature ≤ 110 ℃ various chemical media, especially high concentration, abrasive pulp media. Background technique [0002] At present, reciprocating hydraulic slurry diaphragm pumps are widely used in hydraulic machinery that transports high-concentration and large-flow solid particle-containing media in industries such as hydrometallurgy and coal chemical industry. The pump uses hydraulic diaphragms to isolate abrasive granular media from moving parts and seals. Open, to avoid the wear of the above wearing parts, thereby improving its service life. Since the delivery flow rate of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B53/00F04B43/02B29C69/00B29C43/00B29C59/02B29C71/02
Inventor 赵自成戴宏达管汝光刘祖清伍筱丽
Owner 重庆水泵厂有限责任公司
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