CN2330799Y - Composite sealing component for cylinder - Google Patents

Abstract

The utility model belongs to a composite sealing assembly for an air cylinder, which is characterized in that an axial line of a carrier is provided with a step hole, and a small gap of an upper end hole is matched with a reverse bearer which is in a shape like the reverse Chinese character 'tu'; the lower part of the bearer is provided with a spring which is fixed in the carrier by a clamping sheet, and a containing groove with elasticity for a sealing body is arranged between the bearer and the carrier. The upper end surface of the carrier is provided with a conical annular surface, the lower side surface of the sealing boy forms a conical ring which is fitted with the carrier. The assembly can replace a piston and a piston ring, one sealing body can seal and clog high-temperature and high-pressure gas at the upper part and can seal and clog machine oil sputtering upwards at the lower part. The utility model has the advantages that the frictional force of a cylinder wall is small, the mechanical efficiency is high, the energy resources can be saved, and the service life of a cylinder sleeve can be increased.

Description

Composite sealing assembly for cylinder

The utility model relates to piston and piston ring, is a kind of replacement quartastroke engine, the composite sealing assembly of compressor piston and piston ring.

At present, compression ring and oil ring all are housed on the cylinder of internal-combustion engine inner carrier, being used for the indoor High Temperature High Pressure gas of sealing combustion does not scurry in the body, the body inner engine oil is not scurried into the firing chamber, this effect structure is undesirable, there is following shortcoming: the one, collar extension is leaked, and the 2nd, various thermal distortions are directed at leaks and gas blowby; The 3rd, vertically beating of piston ring causes the pump suction phenomenon, and High Temperature High Pressure gas leakage and gas blowby are directly destroying the lubricant film on the casing wall, can quicken casing wall and wear of piston-rings, lubricating oil leakage is not only wasted machine oil self, and piston ring sticking was lost efficacy, thereby causes more gross leak.In order to overcome above-mentioned leakage, 2-3 road compression ring mostly is set, one oil ring or oil ring are set up interior support spring, strengthened the friction of piston ring artificially, made the lost of life, increased energy consumption casing wall, combustion exists but leak still, can not solve along with the wear and leakage problem more and more serious with scurrying oil.

The purpose of this utility model provides a kind of composite sealing assembly for cylinder, leaks to solve collar extension, eliminates various thermal distortions and pump suction phenomenon, reduce friction, improve the heat energy conversion ratio, thereby improve the mechanical property of quartastroke engine and compressor, cut down the consumption of energy, increase the service life.

The purpose of this utility model is achieved in that this assembly is to be made of carrier and seal, the carrier axis is provided with step hole, upper end hole is little, internal clearance is combined with the beaer of falling the convex shape, the beaer bottom is provided with spring, be fixed in the carrier by spring card, form the device groove that the seal of stretchability is arranged between beaer and the carrier, the carrier upper-end surface is provided with conical anchor ring, seal is made of a main ring body and a pair ring plate, and the conical anchor ring of the conical rings of main ring body downside and carrier matches.

A seal main ring body and a pair ring plate collar extension stagger mutually.

Conical anchor ring on the carrier upper-end surface, its section gradient and horizontal sextant angle are 3-45 ° of angle.

The main ring body downside is conical rings, and its section gradient and horizontal sextant angle and carrier match, and it radially is provided with spill port.

This model utility compared with prior art has the following advantages: 1) this assembly can replace piston and piston ring, and shutoff body inner engine oil is scurried into the passage of firing chamber effectively, and the machine oil consumption is few, and every horsepower-hour only needs the 0.6-1.0 gram, can reduce more than 90%; 2) gas of shutoff High Temperature High Pressure is effectively scurried in the body from collar extension, and greasy property is good, and the mechanical efficiency height is saved fuel oil, and the life-span compared with prior art can be improved 2-3 doubly; 3) but seal contacts thickness than seven times of Fourth Ring system attenuates with casing wall, and do not strengthen inner support power, can reduce 85% with the friction of casing wall; 4) save raw material, the materials of seal can reduce 50% than piston ring, and beaer and carrier materials can reduce 30% than piston; 5) be convenient to processing, easy to install.

Be described further below in conjunction with accompanying drawing:

Fig. 1 composite sealing assembly for cylinder structural representation;

Fig. 2 seal sectional view (amplification).

Fig. 1--in 2: beaer (1), carrier (2) adopts the alloy aluminum material to cast, carrier (2) axis is provided with step hole, upper end hole is little, internal clearance is combined with the beaer of falling the convex shape (1), the upper-end surface is provided with conical anchor ring (5), its section gradient and horizontal sextant angle are 3-45 ° of angle, carrier bottom and connecting rod (7) annexation is same as the prior art, beaer (1) bottom is provided with spring (3), spring (3) is meant support spring, extension spring, single spring or many springs, it among the figure single support spring, it is fixed in the carrier by spring card (4), make and form the device groove that the seal (6) of stretchability is arranged between beaer (1) and the carrier (2), seal is made up of a main ring body (9) and a pair ring plate (8), and main ring body (9) downside is conical anchor ring, and its cross section gradient and horizontal sextant angle and carrier match, on the carrier or seal and carrier be provided with and be communicated with oil hole (10), card (4), pay ring plate (8) outsourcing.

Working principle: after composite sealing assembly for cylinder assembles, put in the cylinder, have 2 masterpieces to be used for seal (6), the one, seal itself is from tension force; The 2nd, acting force of the spring makes beaer to carrier direction people of the same generation means of press seals body, seal trailing edge inclined-plane just in time matches with carrier leading edge inclined-plane, some power of reaction force on carrier leading edge inclined-plane is pushed seal to the casing wall direction, these two power actings in conjunction make the cylindrical of seal be adjacent to cylinder wall, form a sealing surface; The effect of spring is pushed beaer backward, the trailing edge of beaer just tightly fits together with the leading edge of seal, form another sealing surface, work as compression, inner pressure of air cylinder is increasing during explosion stroke, the pressure of periphery that acts on seal along casing wall is also increasing, this power makes seal shrink to its center of circle, beaer bears pressure simultaneously, crush seal body backward, seal downside inclined-plane obtains a reaction force from the carrier front bevel, a part of power of this reaction force is equal to or greater than the pressure that acts on the seal periphery along casing wall, this is close to casing wall with regard to the cylindrical that has guaranteed seal, and seal itself is by the cast iron main ring body and pay a ring plate and form, its opening 180 ° of angles of staggering mutually, this has just been avoided the collar extension leakage, and such one seal played last envelope gas, the double action of lower seal machine oil.

Claims (4)

1, a kind of composite sealing assembly for cylinder is by carrier (2), seal (6) constitutes, it is characterized in that: carrier (2) axis is provided with step hole, upper end hole is little, internal clearance is combined with the beaer of falling the convex shape (1), the beaer bottom is provided with spring (3), be fixed in the carrier by spring card (4), form the device groove that the seal (6) of stretchability is arranged between beaer (1) and the carrier (2), conical anchor ring (5) is arranged on the carrier upper-end surface, seal is by main ring body (9) and pay ring plate (8) formation, and conical rings and carrier on main ring body (9) downside match.

2, composite sealing assembly for cylinder according to claim 1 is characterized in that: conical anchor ring (5) section gradient and horizontal sextant angle are 3-45 ° of angle.

3, composite sealing assembly for cylinder according to claim 1 is characterized in that: seal (6) is made up of a main ring body (9) and a pair ring plate (8), and a main ring body (9) and pair ring plate (a 8) collar extension stagger mutually.

4, composite sealing assembly for cylinder according to claim 3 is characterized in that: main ring body (9) downside is conical rings, and its section gradient and horizontal sextant angle and carrier match, and it radially is provided with spill port (10).

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