CN215654992U - Sealing element for high-pressure homogenizer - Google Patents

Abstract

The utility model discloses a sealing element for a high-pressure homogenizer, which comprises an upper ring, a middle ring and a bottom ring, wherein the middle ring is provided with a plurality of middle rings, each middle ring consists of a plurality of fluorine rubber rings and fluorine rubber cloth clamping rings, the upper ring, the middle ring and the bottom ring are clamped and sealed to form the sealing element, the cross sections of the upper ring, the bottom ring and the middle ring are V-shaped, V-shaped convex blocks of the bottom ring are clamped in V-shaped inner side surfaces of the fluorine rubber cloth clamping rings, V-shaped outer side surfaces of the fluorine rubber rings are clamped in the V-shaped grooves in the inner sides of the upper ring, V-shaped grooves are arranged on the inner sides of the upper ring, the outer sides of the upper ring are arranged to be a plane, the V-shaped inner side surfaces and the V-shaped outer side surfaces of the fluorine rubber rings and the fluorine rubber cloth clamping rings are arranged on one side of the outer side of the bottom ring. The utility model is provided with the bottom ring, the upper ring, the fluorine rubber cloth clamping ring and the V-shaped groove which are mutually matched, thereby achieving the purposes of better performing clearance compensation and preventing medium leakage after the contact surface of the sealing element and the plunger piston is abraded in a pressed state.

Description

Sealing element for high-pressure homogenizer

Technical Field

The utility model relates to the technical field of high-pressure homogenizers, in particular to a sealing element for a high-pressure homogenizer.

Background

The high-pressure homogenizer works and needs high temperature and high pressure to seal the medium in the cavity, the temperature is about 110 ℃, the pressure is up to 20MPa, the requirement on the sealing element of the high-pressure homogenizer is higher, the plunger seal adopted by the existing high-pressure homogenizer is a rectangular seal made of PTFE material, after the seal is used for a long time in a high-temperature and high-pressure environment, the seal can be hardened and lose elasticity, and the surface is abraded, and a gap can be formed between the inner surface and the plunger to cause medium leakage. Practice proves that the normal service life of a set of rectangular seals on a lubricating grease high-pressure homogenizer is about thirty days.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects that a sealing element in a high-pressure homogenizer in the prior art keeps a good sealing effect under the working conditions of high temperature and high pressure and prevent the problem of medium leakage caused by the formation of a gap between an inner surface and a plunger due to the abrasion of the surface of the sealing element, the utility model provides the sealing element for the high-pressure homogenizer.

The utility model adopts the following technical scheme for solving the technical problems: the utility model provides a sealing member for high-pressure homogenizer, includes to fit with a contraceptive ring, intermediate ring and end ring, the end of end ring is the high pressure end, it is the low pressure end to go up the ring end, intermediate ring has a plurality of, intermediate ring comprises a plurality of fluorine rubber ring and fluorine rubber clamp cloth ring, fit with a contraceptive ring, intermediate ring and end ring block sealing connection constitution sealing member, the inboard of fitting with a contraceptive ring is V type groove, end ring and intermediate ring cross section personally submit the V type, the cross section of end ring has V type lug, the inboard of the cross section of intermediate ring is V type groove, and the lateral surface is V type lug, the V type lug block of end ring is in the V type inboard side of fluorine rubber clamp cloth ring, the V type lateral surface block of fluorine rubber ring is in the inboard V type groove of fitting with a contraceptive ring, the inboard of fitting with a contraceptive ring is equipped with V type groove, the outside of fitting with a contraceptive ring is established to the plane.

Further, the assembly sequence of the sealing element from the high-pressure end to the low-pressure end is as follows: the bottom ring, the fluorine rubber clamping cloth ring group, the fluorine rubber ring group and the upper ring.

Furthermore, the fluorine rubber cloth clamping ring group consists of two fluorine rubber cloth clamping rings, and the fluorine rubber ring group consists of two fluorine rubber rings.

Furthermore, the size and the shape of the fluorine rubber ring and the fluorine rubber clamping cloth ring are the same.

Further, the angle formed by the V-shaped groove on the inner side of the upper ring is 63 degrees, the angle formed by the V-shaped bump of the bottom ring is 63 degrees, and the angles of the V-shaped inner side surface and the V-shaped outer side surface of the fluorine rubber ring and the fluorine rubber cloth clamping ring are 63 degrees.

Furthermore, the cross sections of the bottom ring, the fluorine rubber cloth clamping ring, the fluorine rubber ring and the upper ring are of an axisymmetric structure.

Furthermore, the outer end faces of the upper ring and the bottom ring are flat.

Further, the bottom ring end faces the high pressure end of the plunger when the seal is aligned.

Compared with the prior art, the utility model provides a sealing element for a high-pressure homogenizer, which is provided with a bottom ring, an upper ring, a fluorine rubber cloth clamping ring and a V-shaped groove which are mutually matched, so that the purposes of better performing clearance compensation and preventing medium leakage after the sealing element is worn on a contact surface with a plunger piston in a pressed state are achieved, the rectangular sealing is replaced by the V-shaped sealing with the same specification, the inner diameter, the outer diameter and the total height of the V-shaped sealing and the rectangular sealing are unchanged, the bottom ring-fluorine rubber cloth clamping (2) -fluorine rubber cloth clamping (2) -upper ring are assembled in sequence from a high-pressure end to a low pressure, and the whole set is replaced in situ.

The utility model has the following beneficial effects:

1. compared with a rectangular seal, the V-shaped seal has larger elastic deformation under a compressed state, and can better perform clearance compensation after the contact surface of the V-shaped seal and a plunger is worn;

2. the V-shaped seal material fluorine glue is resistant to high temperature and high pressure, and fluorine glue sandwiched cloth is resistant to high temperature and high pressure, so that the V-shaped seal material is not easy to age, crack and deform when the homogenizer works for a long time;

3. the bottom ring end faces the high-pressure end of the plunger during working when the sealing rings are arranged, so that the higher the pressure is, the tighter the sealing rings are attached to the plunger, and the better the sealing effect is;

4. each set of seal is provided with an upper ring and a bottom ring, the outer end surfaces of the two rings are flat, so that all parts of the whole set of seal are stressed uniformly when the seal is pressed, and the seal assembly is ensured to be tightly attached to the lower end surface and the upper end surface of the seal cavity when the seal assembly is placed in the seal cavity.

Drawings

The utility model will be further described with reference to the following drawings and detailed description:

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a cross-sectional view of the upper ring;

FIG. 3 is a cross-sectional view of the bottom ring;

fig. 4 is a cross-sectional view of the intermediate ring.

In the figure: 1. a seal member; 2. a V-shaped groove; 201. a V-shaped outer side surface; 202. a V-shaped inner side surface; 3. ring fitting; 4. an intermediate ring; 401. a fluorine rubber ring; 402. a fluorine adhesive fabric clamping ring; 5. a bottom ring; 501. and a V-shaped bump.

Detailed Description

In order to make the technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following specific embodiments.

Referring to fig. 1-4, a sealing member for a high pressure homogenizer comprises an upper ring 3, a middle ring 4 and a bottom ring 5, wherein the end of the bottom ring 5 is a high pressure end, the end of the upper ring 3 is a low pressure end, the middle ring 4 is provided with a plurality of middle rings 4, each middle ring 4 is composed of a plurality of fluorine rubber rings 401 and fluorine rubber cloth clamping rings 402, the material fluorine rubber used for the middle ring 4 is high temperature resistant, the fluorine rubber cloth clamping rings are high temperature and high pressure resistant, the middle rings 4 are made of high temperature and high pressure resistant materials, the homogenizer is ensured not to age, crack and deform easily under long-term high temperature and high pressure conditions, the fluorine rubber rings 401 and the fluorine rubber cloth clamping rings 402 have the same size and shape, the bottom ring 5, fluorine glue presss from both sides cloth ring 402, fluorine glue ring 401 and the cross section of last ring 3 and is the axisymmetric structure, goes up the inboard V type groove 2 of ring 3, and there is V type lug 501 in the cross section of bottom ring 5, and the inboard of the cross section of intermediate ring 4 is V type groove 2, and last ring 3, intermediate ring 4 and bottom ring 5 block sealing connection constitute sealing member 1.

According to the characteristics of high temperature and high pressure resistance of the fluorine rubber clamping cloth and high temperature resistance of fluorine rubber, the fluorine rubber clamping cloth ring 402 mainly has the function of high pressure impact resistance, when the fluorine rubber clamping cloth ring is in a sealing cavity, the fluorine rubber clamping cloth ring 402 is firstly contacted with materials, the inner end surface and the outer end surface of the fluorine rubber clamping cloth ring also have the sealing function on the materials, the materials are prevented from overflowing from the inner end surface and the outer end surface of the fluorine rubber clamping cloth ring to enter the next ring, in order to ensure the pressure resistance and the sealing effect, two fluorine rubber clamping cloth rings 402 are used, but the time is long, the fluorine rubber clamping cloth ring 402 is worn, a small amount of materials still enter the following sealing ring through the inner end surface and the outer end surface of the fluorine rubber clamping cloth ring, but the pressure of the overflowed materials is greatly reduced, so the fluorine rubber clamping cloth ring 402 has the pressure reduction function; two fluorine rubber rings 401 are arranged behind the two fluorine rubber cloth clamping rings 402, and the main function of the two fluorine rubber cloth clamping rings is a sealing function, so that materials are prevented from further leaking into the rear sealing ring, and the fluorine rubber rings 401 have a sealing function; the fluorine rubber rings 401 are two fluorine rubber fabric clamping rings 402, the pressure of the materials leaking to the fluorine rubber fabric clamping rings 402 is further reduced by utilizing the pressure reduction effect of the fluorine rubber fabric clamping rings 402, and the smaller the material pressure is, the better the pressure reduction effect is; the fluorine rubber clamping ring 402 is followed by two fluorine rubber rings 401, the materials leaked to the fluorine rubber rings 401 are sealed again by utilizing the sealing effect of the two fluorine rubber clamping rings, the two sealing rings are the last sealing protection, if the two fluorine rubber clamping rings can not be sealed again, the group of sealing is failed if the materials are leaked from the parts, and the whole group of sealing is required to be replaced; therefore, the sealing rings are combined and arranged from the high-pressure end to the low-pressure end according to the principle of decompression-sealing-re-decompression-re-sealing, so that the assembly sequence of the sealing element 1 from the high-pressure end to the low-pressure end is as follows: bottom ring 5-fluorine rubber clamping cloth ring 402 group-fluorine rubber ring 401 group-upper ring 3.

The fluorine rubber cloth clamping ring 402 group consists of two fluorine rubber cloth clamping rings 402, the fluorine rubber ring 401 group consists of two fluorine rubber rings 401, wherein the angle formed by the V-shaped groove 2 on the inner side of the upper ring 3 is 63 degrees, the angle formed by the V-shaped lug 501 of the bottom ring 5 is 63 degrees, the angles of the V-shaped inner side surface 202 and the V-shaped outer side surface 201 of the fluorine rubber ring 401 and the fluorine rubber cloth clamping ring 402 are 63 degrees, the inner side of the upper ring 3 is V-shaped, the cross sections of the bottom ring 5 and the middle ring 4 are V-shaped, the V-shaped lug 501 of the bottom ring 5 is clamped in the V-shaped inner side surface 202 of the fluorine rubber cloth clamping ring 402, the V-shaped outer side surface 201 of the fluorine rubber ring 401 is clamped in the V-shaped groove 2 on the inner side of the upper ring 3, the bottom ring 5, the fluorine rubber cloth clamping ring 402, the V-shaped groove 2 or the V-shaped lug 501 between the fluorine rubber ring 401 and the upper ring 3 are 63 degrees, so that the bottom ring 5, the fluorine rubber cloth clamping ring 402, the fluorine rubber cloth clamping ring 401 and the upper ring 3 can be completely and tightly clamped together, guarantee sealing member 1's sealed effect, 5 ends of bottom ring are towards the high-pressure end promptly, pressure is big more like this, sealing member 1 and plunger laminating are tighter, sealed effect is just better, every set of sealing member 1 all is equipped with and fits with a contraceptive ring 3 and bottom ring 5, the outer terminal surface of two rings is level and smooth, guarantee that each partial atress of a whole set of sealing member 1 is even when pressurized, fit with a contraceptive ring 3 and bottom ring 5, the outer terminal surface of two rings is level and smooth, use this V type to seal, can prolong the life of sealing member greatly, the wholeness can be superior to the rectangle and seal.

When in use, according to the characteristics of high temperature and high pressure resistance of the fluorine rubber clamping cloth and high temperature resistance of the fluorine rubber, the 5 end of the bottom ring is directly communicated with a compression cavity of the homogenizer, and the highest pressure in the compression cavity can reach 200kg when the plunger works (compression stage), so the 5 end of the bottom ring is called a high-pressure end; the pressure at the end of the bottom ring 5 is reduced layer by layer through the bottom ring 5 and the middle ring 4, and the pressure at the end of the upper ring 3 is reduced to the minimum, so that the end of the upper ring 1 is called a low-pressure end, the sealing rings are combined and arranged from the high-pressure end to the low-pressure end according to the principle of pressure reduction-sealing-re-pressure reduction-re-sealing, and the assembly sequence of the sealing element 1 is as follows from the high-pressure end to the low-pressure end: the sealing structure comprises a bottom ring 5, a fluorine rubber cloth clamping ring 402, a fluorine rubber cloth clamping ring 401, a fluorine rubber cloth clamping ring 402, a fluorine rubber ring 401 and an upper ring 3, wherein concave surfaces of sealing pieces 1 face a high-pressure end when the sealing pieces are arranged, so that the larger the pressure is, the tighter the sealing pieces 1 are attached to a plunger, the better the sealing effect is, each set of sealing pieces 1 are provided with the upper ring 3 and the bottom ring 5, the outer end surfaces of the two rings are flat, the uniform stress of each part of the whole set of sealing pieces 1 when the sealing pieces are pressed is ensured, the fluorine rubber is high-temperature resistant, the fluorine rubber cloth clamping cloth is high-temperature and high-pressure resistant, the phenomenon that the sealing pieces of the homogenizer are difficult to age and crack and deform when the sealing pieces work under the long-term high-temperature and high-pressure conditions is ensured, the elastic deformation of the sealing pieces 1 can be larger under the pressed state, and the gap compensation can be better after the sealing pieces are worn.

It should be understood that the detailed description and specific examples, while indicating the utility model, are given by way of illustration only, since various other embodiments will become apparent to those skilled in the art upon reference to the following detailed description.

Claims (7)

1. The utility model provides a sealing member for high pressure homogenizer which characterized in that: including last ring (3), intermediate ring (4) and end ring (5), end ring (5) is the high pressure end, it is low pressure end to go up ring (3) end, intermediate ring (4) have a plurality of, intermediate ring (4) comprise a plurality of fluorine rubber ring (401) and fluorine rubber clamp cloth ring (402), it constitutes sealing member (1) to go up ring (3), intermediate ring (4) and end ring (5) block sealing connection, the inboard of going up ring (3) is V type groove (2), end ring (5) and intermediate ring (4) transversal personally submit the V type, the cross section of end ring (5) has V type lug (501), the inboard of the cross section of intermediate ring (4) is V type groove (2), and the lateral surface is V type lug (501), the V type lug (501) block of end ring (5) is in the V type inboard face of fluorine rubber clamp cloth ring (402), the V type lateral surface (201) block of fluorine rubber ring (401) is in the V type inboard groove of going up ring (3), the inner side of the upper ring (3) is provided with a V-shaped groove, and the outer side of the upper ring (3) is a plane.

2. A seal for a high-pressure homogenizer according to claim 1, wherein the assembly sequence of the seal (1) is, from high-pressure end to low-pressure end: a bottom ring (5), a fluorine rubber cloth clamping ring (402) group, a fluorine rubber ring (401) group and an upper ring (3).

3. The seal for a high pressure homogenizer according to claim 2, wherein the set of fluorine rubber clamping rings (402) consists of two fluorine rubber clamping rings (402), and the set of fluorine rubber rings (401) consists of two fluorine rubber rings (401).

4. The seal for a high pressure homogenizer according to claim 1, wherein the fluorine rubber ring (401) and the fluorine rubber clamping cloth ring (402) have the same size and shape.

5. The seal for a high-pressure homogenizer according to claim 1, wherein the angle formed by the V-shaped groove (2) inside the upper ring (3) is 63 °, the angle formed by the V-shaped projection (501) of the bottom ring (5) is 63 °, and the angles formed by the V-shaped inner side surface (202) and the V-shaped outer side surface (201) of the fluorine rubber ring (401) and the fluorine rubber clip cloth ring (402) are 63 °.

6. The seal for a high-pressure homogenizer according to claim 4, wherein the cross-sections of the bottom ring (5), the fluorine rubber clamping cloth ring (402), the fluorine rubber ring (401) and the upper ring (3) are of an axisymmetric structure.

7. The seal for a high pressure homogenizer according to claim 5, wherein the upper ring (3) and the bottom ring (5) have flat outer end surfaces.

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