Elastic rubber ring sealing device
A technology of elastic rubber ring and sealing device, which is applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve the hidden danger of elastic rubber ring friction damage and other problems, and achieve the effect of avoiding friction damage and prolonging the service life
Inactive Publication Date: 2014-11-05
INST OF ELECTRONICS ENG CHINA ACAD OF ENG PHYSICS
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Problems solved by technology
[0003] Aiming at the deficiencies in the prior art that there is a hidden danger of frictional damage to the elastic rubber ring and that the assembly process of the elastic rubber ring must be realized in an environment higher than normal temperature, the present invention proposes an elastic rubber ring sealing device to realize the freedom of the elastic rubber ring at normal temperature. Assembly, avoiding the hidden danger of friction damage of the elastic rubber ring, and will not reduce the medium sealing effect in the device
Method used
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[0011] figure 1 It is a sectional view of the free assembly state of the elastic rubber ring sealing device of the present invention, in figure 1 Among them, the upper wedge 3 and the lower wedge 9 are constrained together by the elastic restoring force of the elastic rubber ring 4; The outer cylindrical surface is matched with the inner hole of the bearing (not shown in the figure); the flange 5 and the outer cylinder 2 are connected together by screws (not shown in the figure); the positioning pin 6 and the flange 5 are connected together by threads; the seal The thimble 7 and the positioning pin 6 are screwed together; the right end surface of the sealing thimble 7 is bonded to the left end surface of the elastic rubber post 8 . Specifically, the outer surface on the right side of the positioning pin 6 is a tapered surface 6a. The tapered surface 6a on the right outer surface of the positioning pin 6 has the same tapered angle as the tapered surface 3a of the upper wedge ...
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The invention provides an elastic rubber ring sealing device. The elastic rubber ring sealing device mainly comprises an upper wedge block, a lower wedge block, a positioning pin and a sealing ejector pin, wherein the upper wedge block and the lower wedge block are restrained together through elastic restoring force of elastic rubber rings, the positioning pin has the same taper angle with the taper surfaces of the wedge blocks, and the sealing ejector pin is connected with the positioning pin together through threads. When the taper surface of the positioning pin is completely separated from the taper surfaces of the wedge blocks and the sealing ejector pin drives an elastic rubber column to be completely separated from the taper surfaces of the wedge blocks, the external diameter of the elastic rubber rings is smaller than the internal diameter of an outer barrel, the elastic rubber rings can be freely placed in the outer barrel, and hidden dangers of friction and breakage are avoided. When the taper surface of the positioning pin is completely attached to the taper surfaces of the wedge blocks and the sealing ejector pin drives the elastic rubber column to be completely attached to the taper surfaces of the wedge blocks, the elastic rubber rings and the elastic rubber column generate compressive deformation, and then a liquid or gas medium in the device can be sealed. According to the device, the service life of the elastic rubber rings can be prolonged, and the sealing effect of the medium in the device cannot be reduced.
Description
technical field [0001] The invention relates to a sealing device, in particular to a sealing device which reduces the hidden danger of frictional damage of an elastic rubber ring without reducing the medium sealing effect in the device. Background technique [0002] In hydraulic devices and pneumatic devices, elastic rubber rings are widely used to seal the liquid medium and gas medium in the device. Its typical application scenario is: first, put the elastic rubber ring into the radial sealing groove of the shaft part; then, insert the shaft part and the elastic rubber ring into the inner hole of the outer cylinder together to achieve radial sealing, and The sealing performance depends on the contact pressure generated on the contact surface of the elastic rubber ring. Usually, in order to ensure the sealing effect, after the elastic rubber ring is placed in the radial sealing groove of the shaft parts, the outer diameter of the elastic rubber ring is larger than the inne...
Claims
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Inventor 张国亮曾志斌
Owner INST OF ELECTRONICS ENG CHINA ACAD OF ENG PHYSICS