CN105605226A

CN105605226A - Sealing device capable of preventing silt

Info

Publication number: CN105605226A
Application number: CN201610190926.0A
Authority: CN
Inventors: 赵坡; 黄竹祥
Original assignee: Anhui Li Nuo Environment Protection Engineering Co Ltd
Current assignee: Anhui Li Nuo Environment Protection Engineering Co Ltd
Priority date: 2016-03-28
Filing date: 2016-03-28
Publication date: 2016-05-25
Anticipated expiration: 2036-03-28
Also published as: CN105605226B

Abstract

The invention discloses a sealing device capable of preventing silt. The sealing device comprises a hard sealing element 1, a hard sealing element 2, a soft sealing element and a filter material, wherein the lower sealing surface of the hard sealing element 1 abuts against the upper sealing surface of the hard sealing element 2; the soft sealing element is sheathed on the hard sealing element 1; the sealing surface of the soft sealing element is provided with one or a plurality of mounting slots and silt storage slots which communicate with each other; and the filter material is mounted in the mounting slot(s) of the soft sealing element. The sealing device can be used for simultaneously sealing the solid and liquid, and avoids the sealing failure caused by the abrasion and damage of the solid particles onto the sealing surface in a common sealing device. The inside and outside relative position between the soft sealing element and hard sealing element 1 is changed, so that the soft sealing element and hard sealing element 1 can be respectively used in the internal seal and external sealing occasions. If particle isolation is respectively arranged inside and outside, the soft sealing element can be simultaneously mounted inside and outside the hard sealing element 1.

Description

A kind of can be in case the sealing device of silt

Technical field

The present invention relates to a kind of can be in case the sealing device of silt, be specifically related to a kind of for rotatablely moving, canTo realize the sealing device of solid-liquid sealing simultaneously.

Background technology

In the wild or the plant equipment of underwater operation, for example, fortune in water pump, underwater robot, adverse circumstancesDefeated machinery etc., exist a large amount of revolutes to need sealing. Because environment is severe, in a lot of situations, not only needWant the oil in water-tight equipment to make it not occur to leak, also will prevent that outside silt or sewage are along revoluteAccess arrangement inside, gap, destroy the normal operation of equipment. Therefore need to develop a kind of new rotation closeEnvelope, sealing solid and liquid simultaneously, or sealing Single Medium.

Summary of the invention

The object of the present invention is to provide a kind of sealing device that can simultaneously carry out solid-liquid sealing, can be forRotary sealing appts in adverse circumstances.

Object of the present invention can be achieved through the following technical solutions:

Can be in case a sealing device for silt, comprise hard seal one, hard seal two, soft seal andFiltering material; The upper sealing surface of the lower sealing surface of described hard seal one and described hard seal two is inconsistent;Described soft seal is sleeved on described hard seal one, has one or more on this soft seal sealing surfaceThe mounting groove interconnecting and silt holding tank; Described filtering material is arranged on the mounting groove of described soft sealIn.

Described soft seal is sleeved on described hard seal one outside; Or be sleeved in described hard seal onePortion; Or to be sleeved on described hard seal one inner and outside simultaneously; Soft seal is concentric with hard seal one.

Ringwise, competing sealing surface is plane, and has for described hard seal one and hard seal twoLasting thrust does not separate both.

Described soft seal is to be made by the macromolecular material of resistance to water, has incorporating property of foreign matter, when being expressed toWhen sharp-pointed little grit, as the grains of sand, can under the effect of power, be embedded among material, can not make softThe resistance surface of seal and hard seal two departs from; Described soft seal moves axially with hard seal one; InstituteState between soft seal and hard seal two and have lasting thrust, make it not separate.

Described filtering material is arranged in the mounting groove of described soft seal, installs and does not firmly stay gap, filtersMaterial passes through liquid, is greater than and allows the solid particle of diameter can't pass.

The sealing surface of described soft seal is divided into multiple concentric protrusion ring surfaces by silt holding tank, described inMultiple protrusion ring surfaces in one plane.

Beneficial effect of the present invention:

The present invention is sealing solid and liquid simultaneously, avoided in general sealing device, solid particle forThe wear-out failure of sealing surface and the seal failure that causes;

By changing soft seal and the inside and outside relative position of hard seal one, can be respectively used to interior sealing andExternal seal occasion; If for the inside and outside isolation that has particle, can be at hard seal one inside and outsideSoft seal is installed simultaneously.

Brief description of the drawings

For the ease of it will be appreciated by those skilled in the art that the present invention is further illustrated below in conjunction with accompanying drawing.

Fig. 1 is that the present invention is a kind of can be in case the schematic diagram of sealing device of silt;

Fig. 2 is soft seal structural representation of the present invention.

Detailed description of the invention

As shown in Figure 1 and Figure 2, a kind of can be in case the sealing device of silt comprises hard seal 1, firmly closeSealing 22, soft seal 3 and filtering material 4; Above-mentioned hard seal can be made of carbide alloy, soft closeSealing can adopt hydrolysis and the low macromolecular material of water absorption rate to make, such as the polytetrafluoroethylene (PTFE) of modification,The material using with plastic bearing under water etc.;

The upper sealing surface of the lower sealing surface of described hard seal 1 and described hard seal 22 is inconsistent, phaseThe sealing surface of conflicting is mutually plane; Described soft seal 3 is sleeved on described hard seal 1, and this is soft closeOn sealing 3 sealing surfaces, have one or more mounting grooves that interconnect 31 and silt holding tank 32; Described mistakeFiltering material 4 is arranged in the mounting groove 31 of described soft seal 3, and filtering material 4 is installed and firmly do not stayed seamGap, can make liquid pass through, and is greater than and allows the solid particle of diameter can't pass;

Filtering material has filtration silt, can, by the effect of water, can adopt the filter of conventional filtered waterCore material, as filter cotton etc.; The shape of filtering material 4 is identical with the mounting groove 31 of soft seal 3, canFill up mounting groove 31, stop silt to leak.

Shown in Fig. 1, soft seal 3 is sleeved on described hard seal one 1 outsides;

As shown in Figure 2, described soft seal 3 is provided with two mounting grooves 31 and silt holding tank 32, mounting groove31 and silt holding tank 32 interconnect; The sealing surface 33 of soft seal 3 is divided into by silt holding tank 32Multiple concentric protrusion ring surfaces 34, described multiple protrusion ring surfaces 34 are in one plane;

The liquid of silt holding tank 32 the insides is with outside sealed fluid connection, and pressure is equal, and soft closeSealing 3 is to use the material with incorporating property of foreign matter to make, and silt is in multiple protrusion annulars of soft seal 3Under the stopping of face 34, do not enter the lower sealing surface of hard seal 1 and the upper sealing surface of hard seal 22In the friction pair forming, hard seal 1 only contacts water with the sealing friction pair of hard seal 22,Can not lose efficacy because of the friction of hard composition granule, therefore, can realize solid-liquid to seal simultaneously;

Friction pair between hard seal 1 and hard seal 22 has lasting power to make it to compress, hard seal22 and soft seal 3 between friction pair also have lasting power to make it to compress, and hard seal one 1 HesBetween soft seal 3, can be in axial sliding, avoid causing because wearing and tearing are different one of them sealing surface to loseEffect; Between sliding pair, can adopt the multiple seal form sealings such as O type circle; Lasting thrust can be by springProvide;

If soft seal 3 is arranged on to the inside of hard seal 1, medium that can sealed inside; AsThe inside and outside soft seal 3 of all installing of fruit, can realize the isolation between inside and outside, two way seal; Soft sealPart 3 should be concentric with hard seal 1.

Silt holding tank 32 on soft seal 3 is communicated with outside, the interior employing filtering material 4 of mounting groove 31Isolation, avoids silt to enter. This sealing device has avoided pressure that silt is pressed into hard seal 1 and soft closeKinematic pair between sealing 3, thus the sealing slip realizing between hard seal 1 and soft seal 3 rubsWipe kinematic pair sealing silt, the sliding friction kinematic pair forming between hard seal 1 and hard seal 22Seal fluid, realizes solid-liquid double-phase sealing.

Above content is only to structure example of the present invention and explanation, the technology of affiliated the artPersonnel make various amendments to described specific embodiment or supplement or adopt similar mode to substitute,Only otherwise depart from the structure of invention or surmount this scope as defined in the claims, all should belong to the present inventionProtection domain.

Claims

Can in case a sealing device for silt it is characterized in that, comprise hard seal one (1),Hard seal two (2), soft seal (3) and filtering material (4); Described hard seal one (1)The upper sealing surface of lower sealing surface and described hard seal two (2) is inconsistent; Described soft seal (3) coverBe contained in described hard seal one (1) upper, on this soft seal (3) sealing surface, have one or more mutualThe mounting groove (31) being connected and silt holding tank (32); Described in described filtering material (4) is arranged onIn the mounting groove (31) of soft seal (3).
According to claim 1 a kind of can in case the sealing device of silt it is characterized in that,Described soft seal (3) is sleeved on described hard seal one (1) outside; Or be sleeved on described hard sealingPart one (1) inside; Or to be sleeved on described hard seal one (1) inner and outside simultaneously; Soft seal(3) concentric with hard seal one (1).
According to claim 1 a kind of can in case the sealing device of silt it is characterized in that,Ringwise, competing sealing surface is for flat for described hard seal one (1) and hard seal two (2)Face, and have lasting thrust that both are not separated.
According to claim 1 a kind of can in case the sealing device of silt it is characterized in that,Described soft seal (3) is to be made by the macromolecular material of resistance to water; Described soft seal (3) is with hardSeal one (1) moves axially; Between described soft seal (3) and hard seal two (2), existLasting thrust, makes it not separate.
According to claim 1 a kind of can in case the sealing device of silt it is characterized in that,Described filtering material (4) is arranged in the mounting groove (31) of described soft seal (3), installs firmlyDo not stay gap, filtering material passes through liquid, is greater than and allows the solid particle of diameter can't pass; Filter materialMaterial is made by general material for core.
According to claim 1 a kind of can in case the sealing device of silt it is characterized in that,The sealing surface (33) of described soft seal (3) is divided into multiple concentric by silt holding tank (32)Protrude ring surface (34), multiple described protrusion ring surfaces (34) in one plane.