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Hydraulic diaphragm type metering pump with preposed diaphragm protection plate structure

A diaphragm type metering pump technology, applied to pumps with flexible working elements, pumps, liquid variable capacity machines, etc., can solve problems such as metering pump failure, shear damage, affecting the performance and life of the diaphragm, and achieve The effect of prolonging the service life, eliminating plastic deformation and reducing the failure rate

Active Publication Date: 2008-01-09
杭州大潮泵业制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. Under high-pressure conditions, after the diaphragm contacts the medium chamber of the pump head, a raised plastic deformation will occur on the surface of the diaphragm corresponding to the small discharge hole of the pump head, which will affect the performance and life of the diaphragm.
[0005] 2. Under abnormal working conditions, such as: instantaneous overpressure, liquid inlet blockage, etc., the diaphragm will be sheared and damaged at the small discharge hole of the medium chamber of the pump head, resulting in metering pump failure

Method used

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  • Hydraulic diaphragm type metering pump with preposed diaphragm protection plate structure
  • Hydraulic diaphragm type metering pump with preposed diaphragm protection plate structure
  • Hydraulic diaphragm type metering pump with preposed diaphragm protection plate structure

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Embodiment Construction

[0019] Referring to the accompanying drawings, the present invention will be described in detail below.

[0020] In the present invention, the hydraulic diaphragm metering pump with a front-mounted diaphragm plate structure includes: a pump head 1, a diaphragm 2, a rear diaphragm plate 3 and a cylinder body 4 installed in sequence, and the pump head 1 has a medium channel 5 connected to the medium inlet 6 and medium outlet 7, a medium chamber 8 is formed between the pump head 1 and the diaphragm 2, and a hydraulic chamber 9 is formed between the diaphragm 2 and the rear diaphragm 3.

[0021] Between the medium channel 5 and the medium chamber 8 of the pump head 1, there is a guide rod through hole, and a guide rod 10 is movably installed in the guide rod through hole. A bushing 11 is provided between the guide rod 10 and the pump head 1 to play the role of guiding and wear resistance. A round diaphragm plate 12 is connected to the end of the guide rod 10 close to the diaphrag...

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Abstract

This invention discloses one pump device and provides one front stove isolation structure meter pump, which Opens one hole between pump medium channel and medium chamber, wherein, the guide bar connection hole is fixed with one guide bar with one film board connected to guide bar film board and other end passing medium channel fixed on the pump head; the pump head is located with concaved hole suitable for film board and thickness; locating at least one connection medium channel and medium chamber hole in the concaved hole.

Description

technical field [0001] The invention relates to a pump. More specifically, the present invention relates to a hydraulic diaphragm metering pump with a front-mounted diaphragm plate structure. Background technique [0002] Metering pumps are widely used in chemical industry, oil refining, pharmaceutical, electric power, paper making, food, urban water supply, industrial water, environmental protection and other occasions. Metering pump is a kind of positive displacement pump, which is divided into two categories: plunger pump and diaphragm pump. Diaphragm pump can be subdivided into hydraulic diaphragm pump and mechanical diaphragm pump. Hydraulic diaphragm pumps can be divided into metal diaphragm metering pumps and non-metallic diaphragm metering pumps due to different diaphragm materials. At present, the products used in domestic and foreign markets are mainly non-metallic diaphragm metering pumps, and the rated pressure is generally around 16Mpa. The main features of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B43/02F04B13/00
Inventor 杨树东
Owner 杭州大潮泵业制造有限公司
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