CN201354725Y - High-speed diaphragm pump membrane - Google Patents

Abstract

The utility model provides a high-speed diaphragm pump membrane which is used on a diaphragm for increasing pump speed, the high-speed diaphragm pump membrane is a folding Z-shaped diaphragm formed by folding a plurality of sets of membranes to form a curved membrane. The high-speed diaphragm pump membrane breaks the design concepts of the membrane structure in traditional diaphragm mud pumps and resolves the problem that the deformation of the membranes in traditional diaphragm pumps during movement process is so large that the pump speed is limited and can not achieve too high. By adopting a novel Z-shaped diaphragm structure, the deformation of the membrane is reduced during every movement, thus the pump speed is enhanced and the requirement of realizing large exhaust quantity on the basis of small structure is achieved so as to be suitable for different conditions in different fields of slurry transportation.

Description

The high speed diaphragm of diaphragm pump

Technical field

The utility model relates to dynamic power machine, fluid machinery technical field, particularly at be used for high concentrations such as slurry conveyed, ore pulp, mortar, mud, salt slurry, coal slime, underground filling, alumina laterite, remote, do not have leak, free of contamination slurry conveying equipment--the improvement of-diaphragm pump.

Background technique

In the systems such as two phase flow slurry conveying such as present at home mill tailings slurry, concentrate slurry, alumina laterite, underground filling, remote high concentration conveying equipment is except plunger type, the reciprocal volume slag of piston type stock pump, water isolation pump, the most desirable conveying equipment is a diaphragm type slag stock pump, the main advantage of the latter is isolated in and sealing system complete with slurry body, it is short to have eliminated reciprocating pump cylinder sleeve, piston life, mud pump with plunger sealing system complexity and will inject clear water or the like drawback in fed sheet of a media.Diaphragm pump has been eliminated these drawbacks, and has simple slurry to carry the fields such as high concentration, volatility, corrosivity, food, chemical industry that are extended in the use field.The conventional membrane pump diaphragm is out of shape in movement process greatly, can not be too high thereby limited pump speed, and the workshop building of equipment use simultaneously, floor space, lifting appliance, maintenance cost etc. are very high, and this same category of device separate unit of import overlaps hundreds of, up to ten million unit easily.

Summary of the invention

The utility model purpose is a kind of high speed diaphragm of diaphragm pump of design, improves pump speed in the hope of using on diaphragm pump.

A kind of high speed diaphragm of diaphragm pump is characterized in that diaphragm adopts many group diaphragms to be folded into " Z " font barrier film that the curved surface film constitutes accordion structure.

Diaphragm adopts 4 to 6 groups of folding curved surface films to constitute, and the pitch of folding curved surface film between whenever folding be 50～70 millimeters, and the arc transition of R12～22 is adopted on the top.

Adopt the metal ring compressing structure between diaphragm and the oil cylinder chamber.

The utility model has structurally been broken through the design concept of conventional membrane slurry pump diaphragm, changing the conventional membrane pump diaphragm is out of shape in movement process greatly, can not be too high thereby limited pump speed, adopt " Z " font membrane configuration design new types of diaphragm structure, reduce and get amount of deformation when each diaphragm moves, in the hope of improving pump speed, reach the demand that realizes big discharge capacity on the minor structure like this, with adapt under the different operating modes, the slurry of different field carries.

Moderate finite deformation amount with a barrier film when reciprocating decomposes on similar folding six to eight microdiaphragms that form, the amount of deformation of each Small diaphragm-piece will have only original about 1/5th like this, on structural design, take into full account simultaneously the circular arc design that diaphragm easily produces the concentrated place of gravitation, allow distortion all the time with circular arc tangentially state, reduced stress and concentrated.Also be that each Small diaphragm-piece has equal micro-deformation simultaneously, greatly reduce the inner frictional heat that produces of the diaphragm that causes owing to high-speed motion, reduced diaphragm because the premature failure that thermal fatigue causes.

Structurally broken through the design concept of conventional membrane slurry pump diaphragm, adopt the design of " Z " font membrane configuration, dwindled the volume and weight of pump group greatly, the barrier film material is selected various material such as nitrile rubber, metal composite material, fluorine rubber for use, changed the existing state of domestic and international barrier film slurry pump pump speed about 30～45, reach more than 60～85 times, make the equipment operation expense reduce about 25%, the workshop building of equipment use simultaneously, floor space, lifting appliance, maintenance cost etc. reduce more than 45%.To become this same category of device separate unit of import and overlap the substitute products of hundreds of, up to ten million units easily.Broken through the restriction of existing barrier film pump structure and service condition, the operation pump speed of diaphragm pump can be brought up to more than the twice of existing level, and the easily damaged parts life-span is higher than existing level, thereby reaches the technical capability that realizes big discharge capacity on the diaphragm pump of little support, small volume.

Description of drawings

Fig. 1 is the utility model structural representation (a middle diaphragm normal state).

Fig. 2 is the utility model structural representation (a preceding dead point diaphragm extended state).

Fig. 3 is the utility model structural representation (a back dead point diaphragm compressive state).

Embodiment

Diaphragm adopts 3 millimeters thick nitrile rubbers as base material, adds other special substances again, to satisfy the delivery requirements of carrying high abrasion, high burn into high density slurry.Adopt 4 to 6 groups of folding curved surface films, be installed in the neutral position at dead point before and after the reciprocating pump work under the normal state, guaranteed diaphragm like this with piston forward with when moving backward, stretching and decrement equate.Be beneficial to the diaphragm raising in working life.Whenever the pitch between folding under the per pass diaphragm nature is 60 millimeters, and the arc transition of R15 is adopted on the top.Be beneficial in the diaphragm manufacture process demoulding in deburring.Adopt the metal ring compressing structure between diaphragm and the oil cylinder chamber, the location flange is of a size of 8 millimeters, is convenient to integral disassembly, assembly and changes.

Claims (3)

1, a kind of high speed diaphragm of diaphragm pump is characterized in that diaphragm adopts many group diaphragms to be folded into " Z " font barrier film that the curved surface film constitutes accordion structure.

2, high speed diaphragm of diaphragm pump according to claim 1 is characterized in that diaphragm adopts 4 to 6 groups of folding curved surface films to constitute, and the pitch of folding curved surface film between whenever folding be 50～70 millimeters, and the arc transition of R12～22 is adopted on the top.

3, high speed diaphragm of diaphragm pump according to claim 1 and 2 is characterized in that adopting between diaphragm and the oil cylinder chamber metal ring compressing structure.

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