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Layered shear-mode sealing filler for rotary pump and preparation method thereof

A sealing packing and rotary pump technology, applied in the direction of rotary piston/swing piston pump components, chemical instruments and methods, pump components, etc., can solve the problem of zero leakage, increased operating costs, and frequent maintenance of the pump body and other problems, to achieve the effect of saving auxiliary equipment, reducing operating costs, and reducing equipment input costs

Active Publication Date: 2012-04-11
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 shearing sealing packing for a rotary pump, which mainly solves the problem of large power consumption of the packing sealing method in the prior art, serious wear and tear on the shaft, frequent maintenance of the pump body, and problems in the stuffing box. It is necessary to design a set of cooling device and rely on the cooling device to dissipate heat. It is difficult to achieve zero leakage in a broad sense. At the same time, it needs to be shut down for repair, and stocking of braided packing of different specifications is required, which increases operating costs and wastes resources. technical issues

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1: The layered shear type sealing packing for the rotary pump of this example, the composition and mass percentage of the packing are: 15% of asbestos-free mineral fiber (silica fiber), inorganic filler (sulfate whisker and high territory) 23%, lithium molybdenum disulfide muscle grease 38%, graphite 24%.

[0034] A preparation method for a layered shearing sealing packing for a rotary pump comprises the following steps:

[0035] a. Put the non-asbestos mineral fiber, graphite and lubricating grease into the high-speed mixer for mixing, and then fully stir;

[0036] b. Knead the mixture of non-asbestos mineral fiber, graphite and grease;

[0037] c. Put the kneaded mixture into the cavity of the plunger type extrusion equipment and press 8MPa to extrude. After extrusion, the finished black layered shear sealing packing for rotary pump will be produced.

[0038] The maximum pressure of the finished shearing sealing packing is 20bar, the maximum shaft spee...

Embodiment 2

[0039] Embodiment 2: The layered shear type sealing packing for the rotary pump of this example, the composition and mass percentage of its packing are: asbestos-free mineral fiber (basalt fiber) 15%, inorganic filler (strong micropowder and light calcium carbonate) 18% %, No. 68 worm gear oil 40%, graphite 27%.

[0040] A preparation method for a layered shearing sealing packing for a rotary pump comprises the following steps:

[0041] a. Put the non-asbestos mineral fiber, graphite and lubricating grease into the high-speed mixer for mixing, and then fully stir;

[0042] b. Knead the mixture of non-asbestos mineral fiber, graphite and grease;

[0043] c. Put the kneaded mixture into a high-speed gear mixer and loosen it to make the mixture fluffy like a sponge. Finally put it into the cavity of the plunger type extrusion equipment and apply a pressure of 10MPa to extrude. After extrusion, the finished black layered shear sealing packing for rotary pumps will be produced...

Embodiment 3

[0045] Embodiment 3: The layered shear type sealing packing for the rotary pump of this example, the composition and the mass percentage of its packing are: asbestos-free mineral fiber (basalt fiber) 10%, inorganic filler (coal series calcined high territory and light carbonic acid Calcium) 17%, molybdenum disulfide lithium muscle grease and No. 68 worm gear oil 39%, graphite 34%.

[0046] A preparation method for a layered shearing sealing packing for a rotary pump comprises the following steps:

[0047] a. Put the non-asbestos mineral fiber, graphite and lubricating grease into the high-speed mixer for mixing, and then fully stir;

[0048] b. Knead the mixture of non-asbestos mineral fiber, graphite and grease;

[0049] c. Put the kneaded mixture into a high-speed gear mixer and loosen it to make the mixture fluffy like a sponge. Finally, it is put into the cavity of the plunger extrusion equipment for extrusion, and the finished black layered shear sealing packing for ...

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Abstract

The invention relates to a filler for braided packing, and especially relates to a layered shear-mode sealing filler for rotary pumps and a preparation method thereof. The invention mainly solves the technical problems in the prior art that the packing sealing mode has great power consumption, severe shaft abrasion, and frequent pump body maintenance; a cooling device is required to be designed on a packing box, and heat is dissipated by the cooling device, which makes it difficult to realize generalized zero leakage; shutdown repair is required; inventory stock is performed for braided packing with various specifications; and thus the operation cost is increased, and resources are wasted. The preparation method of the invention comprises the following steps: adding asbestos-free mineral fibers, graphite, lubricating grease into a high speed mixer for mixing, fully stirring; performing kneading treatment of the mixture of asbestos-free mineral fibers, graphite, and lubricating grease; adding the kneaded mixture into a cavity of a plunger-type extrusion device for extrusion so as to obtain the finished product of a layered shear-mode sealing filler for rotary pumps.

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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IPC IPC(8): F04C15/00C09K3/10
CPCY02P20/141
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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