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 desig

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

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

[0034] The preparation method of layered shear type packing for rotary pump includes the following steps:

[0035] a. Put the non-asbestos mineral fiber, graphite, and 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 row cavity of the plunger extrusion equipment and apply a pressure of 8MPa for extrusion. After extrusion, the finished black layered shear seal packing for the rotary pump will be produced.

[0038] The maximum pressure of the finished shear seal packing is 20bar, the maximum shaft speed is 10m / s, and the maximum temperat...

Example Embodiment

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

[0040] The preparation method of layered shear type packing for rotary pump includes the following steps:

[0041] a. Put the non-asbestos mineral fiber, graphite, and 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 shaper mixer and loosen it to make the mixture fluffy like a sponge. Finally, it is put into the row cavity of the plunger extrusion equipment and extruded with a pressure of 10 MPa. After extrusion, the finished product is a black layered shear seal packing for the rotary pump.

[0044] The maximum pressure of the f...

Example Embodiment

[0045] Example 3: The layered shear seal packing for the rotary pump of this example, the composition and mass percentage of the packing are: non-asbestos mineral fiber (basalt fiber) 10%, inorganic filler (coal calcined high territory and light carbonic acid Calcium) 17%, Molybdenum Disulfide Lithium Muscle Grease and No. 68 Worm Gear Oil 39%, Graphite 34%.

[0046] The preparation method of layered shear type packing for rotary pump includes the following steps:

[0047] a. Put the non-asbestos mineral fiber, graphite, and 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 shaper mixer to loosen the mixture to make the mixture fluffy like a sponge. Finally, it is put into the row cavity of the plunger extrusion equipment for extrusion. After extrusion, the finished black layered shear seal packing for the rotary pump will be ...

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PUM

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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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