Sealing structure and ultrahigh pressure treatment equipment

Abstract

The utility model belongs to the technical field of sealing, particularly discloses a sealing structure and ultrahigh pressure processing equipment, and adopts the technical scheme that the sealing structure comprises a metal ring, a rubber sealing element, an elastic ring and a baffle plate, the metal ring is sleeved on a first sealed element, and an annular accommodating cavity is formed in the left side of the metal ring; the rubber sealing piece is arranged in the annular containing cavity of the metal ring, and the right side of the metal ring is a step face. The elastic ring is arranged on the step face of the metal ring, and the baffle is arranged on the right side of the metal ring and fixedly arranged on the first sealed piece through screws. The sealing structure does not need to be assembled in a pre-tightening mode, installation is rapid, and the whole sealing structure is simple in structure, convenient to operate and better in sealing effect.

Description

TECHNICAL FIELD

[0001] The utility model belongs to sealing technical field, especially, relate to a sealing structure and superhigh pressure processing equipment. BACKGROUND

[0002] The sealing structure of the end cover of the existing superhigh pressure equipment adopts the structure as described in patent number CN207701760U, and the end cover sealing is realized by using a rubber sealing ring and a metal ring. In actual use, the existing rubber sealing ring and metal ring are combined to seal, the metal ring requires high strength, and the sealing is easy to wear; the service life of the sealing assembly is short, and the triangular metal ring needs to be replaced frequently. SUMMARY

[0003] In order to solve the problems existing in the prior art, the utility model provides a sealing structure and superhigh pressure processing equipment, the sealing structure of the utility model does not need pre-tightening assembly, is quickly installed, the whole sealing structure mechanism is simple, operation is convenient, and the sealing effect is better.

[0004] To solve the above technical problems, the utility model adopts the following technical scheme: a sealing structure, comprising:

[0005] A metal ring is sleeved on the first sealed member, one side of the metal ring is provided with a stepped surface, and the other side is provided with an annular accommodating cavity;

[0006] A rubber sealing member is arranged in the annular accommodating cavity of the metal ring, and the rubber sealing member is coaxially arranged with the metal ring;

[0007] An elastic ring is arranged on the stepped surface of the metal ring, and the elastic ring is coaxially arranged with the metal ring;

[0008] A baffle is fixedly arranged, and the baffle is located on the side of the metal ring away from the rubber sealing member.

[0009] Further, the annular accommodating cavity of the metal ring is further provided with a metal ring, the metal ring is coaxially arranged with the rubber sealing member, and in the radial direction of the first sealed member, the metal ring is located on the outer side of the rubber sealing member.

[0010] Further, the cross section of the metal ring is triangular.

[0011] Further, the four corners of the elastic ring are provided with chamfers, and the side surface of the elastic ring close to the baffle is provided with a groove.

[0012] Further, the baffle is fixedly arranged on the first sealed member, and in the radial direction of the first sealed member, the height of the baffle is higher than the stepped surface of the metal ring and lower than the height of the elastic ring.

[0013] The utility model discloses further put forward a kind of ultrahigh pressure processing equipment, the ultrahigh pressure processing equipment of the utility model includes the sealing assembly described in any one of above.

[0014] The utility model has the beneficial effects that: the utility model adopts the combination of metal ring, elastic ring and rubber sealing element, and the counter pressure generated by the deformation of each sealing element increases with the increase of medium pressure, so that the "self-sealing" effect is achieved. The ultrahigh pressure processing equipment with the sealing structure of the utility model has stronger sealing performance and can reduce maintenance cost. BRIEF DESCRIPTION OF DRAWINGS

[0015] The utility model will be further described below with reference to the drawings.

[0016] Figure 1 It is the structural schematic diagram of the utility model.

[0017] Figure 2 It is Figure 1 It is the local enlarged view of sealing structure.

[0018] Figure 3 It is the sealing structure schematic diagram without metal ring.

[0019] In the drawing, 1 is metal ring, 2 is rubber sealing element, 3 is elastic ring, 31 is chamfer, 32 is recess, 4 is baffle, 5 is screw, 6 is metal ring. DETAILED DESCRIPTION

[0020] As Figure 3 Indicated, a kind of sealing structure, including metal ring 1, rubber sealing element 2, elastic ring 3 and baffle 4. Metal ring 1 is sleeved on the first sealing element, and the left side of metal ring 1 is attached to the first sealing element and the left side of metal ring 1 is provided with annular accommodating cavity, rubber sealing element 2 is arranged in the annular accommodating cavity of metal ring 1, and rubber sealing element 2 is coaxially installed with metal ring 1. Rubber sealing element 2 can adopt O type ring.

[0021] The right side of metal ring 1 is stepped surface. Elastic ring 3 is arranged on the stepped surface of metal ring 1, and elastic ring 3 is coaxially arranged with metal ring 1. Four corners of elastic ring 3 are all provided with chamfer 31, and one side of elastic ring 3 close to baffle 4 is provided with recess 32. The existence of recess 32 can increase the deformation of elastic ring 3 in radial direction. In actual use process, elastic ring 3 can be Yx type sealing ring, and can also be UN seal.

[0022] A baffle 4 is provided on the right side of the metal ring 1, and the baffle 4 is fixed to the first sealed component by screws 5. In the radial direction of the first sealed component, the diameter of the baffle 4 is sufficient to cover the elastic ring 3, but not to completely cover it. That is to say, in the axial direction of the first sealed component, the height of the baffle 4 is higher than the stepped surface of the metal ring 1 and lower than the height of the elastic ring 3.

[0023] The first sealing element, together with the metal ring 1, the rubber sealing element 2, the elastic ring 3, and the baffle 4, enters the second sealed element. The metal ring 1, the rubber sealing element 2, the elastic ring 3, and the baffle 4 complete the seal between the first sealed element and the second sealing element.

[0024] In the above embodiment, only the rubber seal 2 is installed in the annular cavity of the metal ring 1, such as Figures 1-2 As shown, in this embodiment, the annular cavity of the metal ring 1 is further provided with a metal ring 6. The metal ring 6 is coaxially arranged with the rubber seal 2, and in the axial direction of the first sealed component, the metal ring 6 is located outside the rubber seal 2. The cross-section of the metal ring 6 is triangular. If there is a triangular metal ring 6, the cross-sectional shape of the annular cavity is trapezoidal; if there is no metal ring 6, the cross-sectional shape of the annular cavity is rectangular.

[0025] The above describes two different sealing structures of this utility model. Based on the above sealing structures, the sealing principle of this utility model will be described in detail below.

[0026] During operation, the front end of the first sealed component enters the second sealed component. The metal ring 1, baffle 4, elastic ring 3, rubber seal 2, and triangular metal ring 6 also all enter the second sealed component. The baffle 4 primarily prevents the metal ring 1 and elastic ring 3 from loosening. When the pressure inside the second sealed component increases, the elastic ring 3, acting as the first seal, expands radially under axial compression, reducing the gap with the inner diameter of the second sealed component. The metal ring 1 deforms under compression, filling the gap between the first and second sealed components, forming the second seal. The rubber seal 2 between the metal ring 1 and the first sealed component deforms under compression, filling the groove on the end face of the metal ring 1, forming the third seal. Under the compression of the rubber seal 2, the metal ring 6 deforms away from the metal ring 1, further enhancing the sealing effect between the metal ring 1 and the first sealed component.

[0027] This invention also proposes an ultra-high pressure processing device, which includes the sealing assembly described in any of the above claims. Specifically, in the ultra-high pressure device, the first sealed component is an end cap, and the second sealed component is the opening of the ultra-high pressure container. The end cap enters the ultra-high pressure container to block and seal the opening of the ultra-high pressure container. The sealing assembly is installed between the end cap and the opening of the ultra-high pressure container.

[0028] The sealing structure is adopted, so that the sealing performance of the ultrahigh pressure treatment equipment is stronger, and meanwhile, the maintenance frequency and maintenance cost of the sealing assembly can be reduced.

[0029] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range possessed by the ordinary skilled in the art without departing from the purpose of the utility model.

Claims

1. A seal structure, characterized by, The utility model relates to a sealing structure of a first sealed part, which comprises: a metal ring (1) sleeved on the first sealed part, one side of the metal ring (1) being provided with a stepped surface and the other side being provided with an annular accommodating cavity; a rubber sealing part (2) arranged in the annular accommodating cavity of the metal ring (1) and coaxial with the metal ring (1); an elastic ring (3) arranged on the stepped surface of the metal ring (1) and coaxial with the metal ring (1); and a baffle (4) fixedly arranged on the first sealed part and located on the side of the metal ring (1) away from the rubber sealing part (2).

2. A seal structure according to claim 1, wherein: The annular accommodating cavity of the metal ring (1) is further provided with a metal ring (6) coaxial with the rubber sealing part (2) and located on the outer side of the rubber sealing part (2) in the radial direction of the first sealed part.

3. A seal structure according to claim 2, wherein: The cross section of the metal ring (6) is triangular.

4. The seal structure of claim 1, wherein: The four corners of the elastic ring (3) are all provided with chamfers (31), and the side surface of the elastic ring (3) close to the baffle (4) is provided with a groove (32).

5. The seal of claim 1 wherein: The baffle (4) is fixedly arranged on the first sealed part and has a height higher than that of the stepped surface of the metal ring (1) and lower than that of the elastic ring (3) in the radial direction of the first sealed part.

6. An ultra-high pressure processing apparatus characterized by comprising: The utility model further relates to a sealing structure comprising the sealing structure of any one of claims 1-5.

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