CN2825982Y - Non-asbestos rust-proof and anti-sticking cylinder gasket - Google Patents

Abstract

The utility model discloses a rust and stickiness preventing cylinder gasket without asbestos, which can satisfy the requirement of environmental protection, can prevent rust and stickiness and has better sealing performance. The utility model comprises a mild steel plate and fibrous layers, wherein the interior of the mild steel plate is used as a skeleton, and the fibrous layers are pressed on both surfaces of the mild steel plate; the surfaces of the fibrous layers are coated with high temperature resisting tack eliminator, and a metal protective ring wraps the periphery of a cylinder hole. The fibrous layers are made of plant fibre or synthetic fibre or silicate mineral fillers, and all materials do not contain asbestos, are selected for many times and are manufactured and tested in a trial mode for a long time. The utility model also has good rust prevention performance and abrasion resisting performance under the guarantee of normal using conditions. The mild steel plate can be a plane steel plate or a punched steel plate, and the structure of the cylinder gasket can be firmer when the punched steel plate is adopted.

Description

The antirust antiseized head gasket of no asbestos

One, technical field

The utility model relates to a kind of gas engine part, the head gasket that uses on a kind of specifically internal combustion engine cylinder.

Two, background technique

Head gasket is one of strength member on the internal-combustion engine, its effect is as the Sealing between the cylinder block and head, leakage of cooling water in high-temperature high-pressure fuel gas that produces when preventing firing chamber work and the cylinder is so the quality of head gasket performance directly has influence on the proper functioning of internal-combustion engine.In order to satisfy the condition of under rugged environment, working, the head gasket that extensively adopts is steelframe asbestos composite structures in the market, be skeleton promptly with the spurt steel plate, two sides at steelframe forms with asbestos and the compacting of modified rubber Bond, it utilizes the fire prevention of asbestos, resistant to elevated temperatures characteristic and the intensity of spurt steel plate, the characteristics of plastic property equilibrium, makes the head gasket that produces satisfy usage requirement.But, this head gasket also exists problem, because its part adopted asbestos product, well-known, asbestos are a kind of materials that environment and human body had very big harm, pertinent regulations according to national environmental protection, asbestos product belongs to the row of the product that bans use of and export, and in addition, the spurt steel plate is meeting humidity and also getting rusty easily under the corrosion function of composite material itself, and the rubber in the sheet material also very easily causes softening and sticking cylinder owing at high temperature work for a long time.

Three, summary of the invention

1, goal of the invention: the purpose of this utility model provides a kind of environmental requirement of both having satisfied, simultaneously can be antirust, antiseized, and sealability does not better have the antirust antiseized head gasket of asbestos.

2, technological scheme: the antirust antiseized head gasket of no asbestos described in the utility model, it is characterized in that: it comprises inner as the Mild Sheet Steel of skeleton and the layer of fibers that is compressed on the Mild Sheet Steel two sides, scribble high temperature resistant antitack agent on described fibrolaminar surface, the metal ring guard ring is arranged in the cladding of cylinder-bore periphery.

Its working principle is: head gasket is loaded between cylinder block and the cylinder head, tightens connecting bolt with rated moment, make cylinder block and head clamping and compression cylinder pad to reach anti-purpose of letting out.Because head gasket inside is skeleton with the Mild Sheet Steel, has higher plasticity, the surface of contact of head gasket and cylinder block, cylinder head is fully fitted to improve the effect of sealing; Simultaneously, Mild Sheet Steel also has certain intensity so that head gasket is unlikely by conquassation.Not only the material compressibility is low, rebound degree is high to be compressed on the layer of fibers of Mild Sheet Steel outside, and it is moistureproof, corrosion-resistant, so both guaranteed the sealability of cylinder, and also eliminated moisture content and entered head gasket inside and cause Mild Sheet Steel corrosion and sealing layer itself corrosive action Mild Sheet Steel.And the high temperature resistant antitack agent of smearing on fibrolaminar surface can effectively reach antiseized effect, makes layer of fibers can not produce the phenomenon of softening sticking cylinder in long hot environment, and antitack agent has certain elasticity, more helps improving the performance of sealing.In cylinder-bore periphery cladding the metal ring guard ring is arranged, its objective is and can not get into the proper functioning that influences cylinder in the cylinder-bore after head gasket is compressed.

Described layer of fibers is to be made by vegetable fiber, synthetic fiber or silicate mineral filler.These materials do not contain asbestos, and through repeatedly trial-production, the test of selection and long period, under the condition that has guaranteed normal use, it also has antirust, corrosion resistant excellent specific property.

Described steel plate can be plane steel plate or spurt steel plate.Adopt the spurt steel plate can make the structure of head gasket more firm, in course of exerting pressure was installed, layer of fibers can not be separated with steel plate.

3, beneficial effect:

The antirust antiseized head gasket of no asbestos described in the utility model has the following advantages: the layer of fibers that 1) is compressed on the Mild Sheet Steel outside does not contain harmful asbestos component, has satisfied environmental protection requirement.2) layer of fibers also has antirust, corrosion resistant characteristic under the prerequisite that has satisfied usability, enters head gasket inside and causes Mild Sheet Steel corrosion and sealing layer itself corrosive action to Mild Sheet Steel thereby eliminate moisture content.3) the high temperature resistant antitack agent of smearing on fibrolaminar surface is not only antiseized, and it also has certain elasticity, more helps improving the performance of sealing.

Four, description of drawings

Accompanying drawing 1 is a structural representation of the present utility model.

The 1-Mild Sheet Steel, 2-layer of fibers, the high temperature resistant antitack agent of 3-, 4-metal ring guard ring, 5-cylinder-bore.

Five, embodiment

As shown in Figure 1, the antirust antiseized head gasket of no asbestos described in the utility model, it comprises inner Mild Sheet Steel 1 as skeleton, Mild Sheet Steel 1 can be plane steel plate or spurt steel plate, go out layer of fibers 2 in Mild Sheet Steel 1 two sides roll-in, layer of fibers 2 can be made by vegetable fiber, synthetic fiber or silicate mineral filler.Scribble high temperature resistant antitack agent 3 on the surface of layer of fibers 2, the periphery cladding of cylinder-bore 5 openings on head gasket has metal ring guard ring 4, and the number of metal ring guard ring 4 has 1,2,4 or more a plurality of respectively according to the number of cylinder.

During use, head gasket is loaded between cylinder block and the cylinder head, tightens connecting bolt, cylinder block and head is clamped and the compression cylinder pad with rated moment.Head gasket inside is Mild Sheet Steel, has higher plasticity and certain intensity, and the surface of contact of head gasket and cylinder block, cylinder head is fully fitted to improve the effect of sealing; Not only the material compressibility is low, rebound degree is high to be compressed on the layer of fibers of Mild Sheet Steel outside, and it is moistureproof, corrosion-resistant, so both guaranteed the sealability of cylinder, and also eliminated moisture content and entered head gasket inside and cause Mild Sheet Steel corrosion and sealing layer itself corrosive action Mild Sheet Steel.And the high temperature resistant antitack agent of smearing on fibrolaminar surface can effectively reach antiseized effect, makes layer of fibers can not produce the phenomenon of softening sticking cylinder in long hot environment, and antitack agent has certain elasticity, more helps improving the performance of sealing.

Claims (3)

1, the antirust antiseized head gasket of a kind of no asbestos, it is characterized in that: it comprises inner as the Mild Sheet Steel (1) of skeleton and the layer of fibers (2) that is compressed on Mild Sheet Steel (1) two sides, scribble high temperature resistant antitack agent (3) on the surface of described layer of fibers (2), at cylinder-bore periphery cladding metal ring guard ring (4).

2, the antirust antiseized head gasket of no asbestos according to claim 1, it is characterized in that: described layer of fibers (2) is the layer of fibers of being made by vegetable fiber, synthetic fiber or silicate mineral filler.

3, the antirust antiseized head gasket of no asbestos according to claim 1 and 2 is characterized in that: described Mild Sheet Steel (1) is plane steel plate or spurt steel plate.