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Manufacturing method of pneumatic sealing gasket

A technology of sealing gasket and manufacturing method, which is applied in the direction of engine sealing, mechanical equipment, engine components, etc., can solve the problems of NdFeB quality reduction, inability to isolate air, low working temperature, etc., and achieve the best sealing performance and stable operation Performance, avoiding the decline of sealing performance, preventing the effect of swelling seal

Inactive Publication Date: 2017-09-12
NINGBO LINGKE NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantages of NdFeB are high cost performance and good mechanical properties; the disadvantages are low working temperature, poor temperature characteristics, and easy to powder corrosion and easy to be oxidized
At present, the more commonly used material barrel is generally composed of a cylindrical barrel body. The material barrel is provided with a material connection port that matches the discharge port of the jet mill. Although it can be more convenient for material connection of NdFeB, due NdFeB itself is very easy to oxidize, and this type of barrel cannot isolate the air while receiving the material, resulting in a great reduction in the quality of NdFeB
[0005] The root cause of the above problems lies in the lack of a barrel in the prior art that is specifically designed for use in the process of joining NdFeB materials, and the lack of a barrel that can still have a better seal during rapid and multiple disassembly and assembly processes. Performance Sealing Mechanism

Method used

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  • Manufacturing method of pneumatic sealing gasket
  • Manufacturing method of pneumatic sealing gasket
  • Manufacturing method of pneumatic sealing gasket

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0115] Such as figure 1 As shown, this embodiment provides a pneumatic sealing gasket. It includes an outer rubber ring 110 and an inner rubber ring 120 arranged concentrically. The outer rubber ring 110 and the inner rubber ring 120 pass through at least two connecting pipes 130 evenly distributed along the circumferential direction (in this embodiment, the number of connecting pipes 130 is 8 A) connected as a whole; the hollow inside of the outer rubber ring 110 is configured as a circular air storage cavity 221, the inside of the inner rubber ring 120 is hollow configured as a circular air collecting cavity 223, and the middle of any connecting pipe 130 is configured for The gas flow channel 222 connecting the gas storage cavity 221 and the gas collection cavity 223.

[0116] The capacity of the gas storage chamber 221 can be 2 to 5 times the capacity of the gas collection chamber 223, the side wall thickness of the gas storage chamber 221 can be 1.5 to 3 times the thickness o...

Embodiment 2

[0118] Such as figure 2 As shown, this embodiment provides a sealing gasket for a neodymium iron boron storage barrel. The difference from embodiment 1 is that the outer rubber ring 110 and the connecting pipe 130 are both constructed with a braid 210.

[0119] In this embodiment, the braided layer 210 is formed by interlacing warp yarns and weft yarns. The warp and weft yarns are made of blended yarns made of nylon fibers and metal fibers, and all warp and weft yarns of the braided layer 210 are spirally wrapped around the outer rubber. The outer surface of the ring 110 and the connecting pipe 130.

[0120] In this embodiment, the nylon fiber in the warp yarn accounts for about 85%, and the metal fiber accounts for about 15%, so that the warp yarn has better elasticity and toughness; the nylon fiber in the weft yarn accounts for about 80%, and the metal fiber accounts for about 20%. Make the warp have better elasticity and strength. In addition, the density of the warp yarn is ...

Embodiment 3

[0122] This embodiment provides a sealing ring for the air-tight connection of pipe fittings. The difference from embodiment 2 is that the material of the outer rubber ring 110 is composed of natural rubber, butadiene rubber, nitrile rubber, Titanium dioxide, carbon fiber, nano zinc oxide, paraffin-based rubber softening oil, plasticizer, stearic acid, composition;

[0123] The material of the inner rubber ring 120 is composed of natural rubber, butadiene rubber, active silicon powder, carbon black, sulfur, antioxidant, accelerator, zinc oxide, magnesium oxide, stearic acid, and aromatic oil.

[0124] In this embodiment, the weight of each component in the outer rubber ring 110 can be any one of the following ranges: 55 to 65 parts of natural rubber, 15 to 25 parts of butadiene rubber, 5 to 10 parts of nitrile rubber, and titanium dioxide 1.5 to 2.5 parts, 1 to 2 parts of carbon fiber, 1 to 1.5 parts of nano zinc oxide, 9 to 11 parts of paraffin-based rubber softening oil, 6 to 7 p...

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Abstract

The invention relates to the technical field of NdFeB production equipment, in particular to a method for manufacturing a pneumatic sealing gasket. It comprises the following steps: (1) preparing the first rubber raw material; (2) preparing the second rubber raw material; (3) preparing the outer rubber ring by using the first rubber raw material; (4) preparing the inner rubber ring by using the second rubber raw material; 5) Using the second rubber raw material to prepare the connecting pipe; (6) Assembling. The method of the invention can prepare a sealing gasket with excellent airtight performance and service life.

Description

Technical field [0001] The invention relates to the technical field of neodymium iron boron production equipment, in particular to a method for manufacturing a pneumatic sealing gasket. Background technique [0002] Neodymium iron boron magnetic material, as the latest result of the development of rare earth permanent magnet materials, is called "magnet king" due to its excellent magnetic properties. NdFeB magnetic material is an alloy of praseodymium, neodymium, boron and iron, also known as magnet steel. Neodymium iron boron has extremely high magnetic energy product, coercivity and energy density. It has been widely used in modern industry and electronic technology, making instrumentation, electro-acoustic motors, magnetic separation magnetization and other equipment miniaturized, lightweight, Thinning becomes possible. [0003] NdFeB contains a large amount of rare earth elements neodymium, iron and boron, and its characteristics are hard and brittle. The advantages of neody...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16J15/10C08L7/00C08L9/00C08L9/02C08L91/06C08L91/00C08K13/04C08K7/06C08K3/22C08K5/09C08K3/04C08K3/36C08K3/06
Inventor 沈孝富
Owner NINGBO LINGKE NEW MATERIAL TECH
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