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Layered shearing type sealing filler material used for rotary pump and preparation method thereof

A sealing packing, rotary pump technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of difficult to achieve zero leakage, frequent pump maintenance, increase operating costs, etc., to save auxiliary equipment and reduce equipment. The effect of reducing input cost and operating cost

Active Publication Date: 2014-04-09
浙江国泰萧星密封材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a layered shear-type sealing packing for a rotary pump and a preparation method thereof, which mainly solves the problems in the prior art such as high power consumption, serious wear on the shaft, frequent maintenance of the pump body, and problems in the packing. It is necessary to design a cooling device on the letter, relying on the cooling device to dissipate heat, it is difficult to achieve zero leakage in a broad sense, and at the same time it needs to be shut down for repairs, and stocking of braided packing of different specifications is required, thus increasing operating costs and wasting Technical issues such as resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1: a kind of layered shear type seal packing for rotary pump of this example, the composition and mass percent of its filler are: plant fiber (soaked hemp fiber) 15%, inorganic filler (polytetrafluoroethylene and barium sulfate ) 45%, 3# food grade grease and Vaseline 40%.

[0035] A preparation method for a layered shear sealing packing for a rotary pump comprises the following steps:

[0036] a. Put the plant fiber into the carding machine for carding to make it fluffy;

[0037] b. Dewater the grease and the inorganic filler, then mix the grease and the inorganic filler, and then put it into the mixer for full mixing. When mixing, pour cooling water into the interlayer of the mixer, so that the mixer will work at high speed. As the temperature rises, it will cause color difference in product batches;

[0038] c. Take the plant fibers that have been loosened by the carding machine and put them into the mixer, then add inorganic fillers, stir the frequen...

Embodiment 2

[0040] Embodiment 2: A kind of layered shear type seal packing for rotary pump of this example, the composition and mass percentage of its filler are: plant fiber (twisted hemp staple fiber) 25%, inorganic filler (polytetrafluoroethylene, carbonic acid Calcium) 40%, grease (3# food grade grease) 35%.

[0041] A preparation method for a layered shear sealing packing for a rotary pump comprises the following steps:

[0042] a. Put the plant fiber into the carding machine for carding to make it fluffy;

[0043] b. Dewater the grease and the inorganic filler, then mix the grease and the inorganic filler, and then put it into the mixer for full mixing. When mixing, pour cooling water into the interlayer of the mixer, so that the mixer will work at high speed. to heat up;

[0044] c. Take the plant fibers that have been loosened by the carding machine and put them into the mixer, then add inorganic fillers, stir the frequency conversion speed to 900 rpm for high-speed stirring,...

Embodiment 3

[0046] Embodiment 3: A layered shearing seal packing for a rotary pump of this example, the composition and mass percentage of the filler are: plant fiber (three equal mixtures of soaked hemp fiber, twisted hemp short fiber, and cotton fiber) 30%, inorganic filler (polytetrafluoroethylene) 40%, grease (Vaseline) 30%.

[0047] A preparation method for a layered shear sealing packing for a rotary pump comprises the following steps:

[0048] a. Put the plant fiber into the carding machine for carding to make it fluffy;

[0049] b. Dewater the grease and the inorganic filler, then mix the grease and the inorganic filler, and then put it into the mixer for full mixing. When mixing, pour cooling water into the interlayer of the mixer, so that the mixer will work at high speed. As the temperature rises, it will cause color difference in product batches;

[0050] c. Take the plant fiber that has been loosened by the carding machine and put it into the mixer, then add the inorgani...

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Abstract

The invention relates to a filler material for braided packing and especially to a layered shearing type sealing filler material used for a rotary pump and a preparation method thereof. The invention mainly aims to overcome technical problems in the prior art, e.g., a conventional sealing mode consumes considerable power, a shaft is severely abraded, a pump body is frequently examined and repaired, a set of cooling device needs to be designed on a stuffing box to realize heat dissipation, which makes broadly defined zero leakage difficult to achieve, a rotary pump has to be shut down for repair, and braided packing of different specification has to be stocked, which increases operational cost and wastes resources. According to the invention, vegetable fibers are put in a fluff carding machine for fluff carding so as to allow the vegetable fibers to become fluffy floccules; grease and an inorganic filler material are subjected to anhydration and then to mixing and then are put in a mixer for fully stirring; the vegetable fibers are put in the mixer and are mixed with the grease and the inorganic filler material, and after uniform mixing, a finished product of the layered shearing type sealing filler material used for a rotary pump is obtained.

Description

technical field [0001] The invention relates to a packing for braided packing, in particular to a layered shearing sealing packing for a rotary pump and a preparation method thereof. Background technique [0002] For more than 100 years, braided packing has been widely used in various types of pumps, valves and other rotary or reciprocating sealing elements. The sealing principle is to put the braided packing of a specific type and specification into the stuffing box, rely on the pressing force of the gland to deform the braided packing, and then tighten the shaft (valve stem) and the inside of the stuffing box to achieve the purpose of sealing. A Chinese patent discloses an easy-to-replace sealing packing packing (authorized announcement number: CN201723707U), which consists of a packing body in which several clusters of corrosion-resistant flexible metal wires or carbon fiber wires are wrapped; the cross-section of the packing body The shape is rectangular or circular, an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K3/10C09K3/12
Inventor 孙锦龙
Owner 浙江国泰萧星密封材料股份有限公司
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