Cold air conveying pipe assembly sealing ring

Abstract

The utility model relates to the technical field of sealing rings, in particular to a cold air conveying pipe assembling sealing ring which comprises a rubber sealing sleeve, a butt joint sealing ring is integrally formed on the outer ring face of the rubber sealing sleeve, a reserved hole is formed in the surface of the butt joint sealing ring, a rubber plug pipe is inserted into the reserved hole, and a sealing ring is arranged on the rubber plug pipe. An inner supporting cylinder is fixed to the inner ring face of the rubber sealing sleeve, expansion rings are fixed to the two ends of the inner supporting cylinder, and the outer ring faces of the expansion rings are fixedly sleeved with elastic sealing rings. The cold air conveying pipe splicing sealing ring has the beneficial effects that after the two ends of the cold air conveying pipe splicing sealing ring are inserted into the two cold air conveying pipes needing to be in butt joint respectively, the expansion encryption device can be cooled along with flowing of cold air in the conveying pipes, an expansion ring is arranged in the expansion encryption device, and the expansion ring outwards pushes an elastic sealing ring outside the expansion ring, so that the cold air conveying pipe splicing sealing ring is formed. The elastic sealing ring is firmly extruded to abut against the circular inner wall of the cold air conveying pipe, and therefore the two ends of the assembled sealing ring can both achieve the expansion and densification effects.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing rings, in particular to a sealing ring for assembling a cold air delivery pipe. Background Art

[0002] The sealing ring of the cold air delivery pipe is usually installed at the pipe joint to ensure the sealing of the pipe and prevent the leakage of cold air. The sealing ring is generally made of rubber or silicone rubber, which has the characteristics of high temperature resistance, wear resistance, corrosion resistance, etc., and is simple and convenient to install.

[0003] In the prior art, after the cold air delivery pipe assembly sealing ring is installed between the two cold air delivery pipes that need to be connected, the cold air will not be transported in the cold air delivery pipe all the time. In many cases, it is restricted by seasons, so the cooling equipment will be shut down. The cessation of cold air transportation in the cold air delivery pipe will cause the pipe to heat up, and the temperature rise will cause the assembled sealing ring to expand. After the cold air is transported again, the sealing ring will shrink due to the cold. After a large number of expansion and contraction times, the sealing effect of the sealing ring will be weakened, thereby causing gaps to appear at the joints of the cold air delivery pipes, and then cold air leakage will occur.

[0004] Therefore, we need a sealing ring for assembling cold air delivery pipes to solve the problem that the sealing effect of the existing sealing ring will be weakened after a large number of expansion and contraction times; it can ensure the sealing of the pipeline. Utility Model Content

[0005] The utility model aims to provide a sealing ring for assembling a cold air delivery pipe, so as to solve the problem in the above-mentioned background technology that the sealing effect of the existing sealing ring will be weakened after a large number of expansion and contraction times; and the sealing performance of the pipe can be ensured.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cold air delivery pipe assembly sealing ring, including a rubber sealing sleeve, the outer ring surface of the rubber sealing sleeve is integrally formed with a docking sealing ring, the surface of the docking sealing ring is provided with a reserved hole, a rubber plug tube is inserted into the inside of the reserved hole, an inner support tube is fixed to the inner ring surface of the rubber sealing sleeve, expansion rings are fixed at both ends of the inner support tube, and an elastic sealing ring is fixed to the outer ring surface of the expansion ring.

[0007] Preferably, the joint sealing ring is an annular plate structure, the joint sealing ring is centered on the outer ring surface of the rubber sealing sleeve, an annular hollow cavity B is opened inside the joint sealing ring, and the reserved hole and the annular hollow cavity B are connected.

[0008] Preferably, the reserved holes are provided in plurality, and the plurality of reserved holes are arranged and distributed with equal distance and size along the annular surface of the sealing ring at the joint, and the annular hollow cavity B divides the reserved holes into two groups.

[0009] Preferably, a rubber connecting ring is fixed between two parallel side walls of the annular hollow cavity B, and the inner ring diameter of the rubber connecting ring is equal to the aperture of the reserved hole.

[0010] Preferably, the outer ring surface of the rubber connecting ring is provided with a notch, and the notch is an annular groove with a "U"-shaped fracture.

[0011] Preferably, the rubber stopper tube is integrally formed on the inner ring surface of the rubber connecting ring, the length of the rubber stopper tube is greater than the thickness of the sealing ring at the joint, and the outer ring surfaces at both ends of the rubber stopper tube are provided with slopes, and the slopes are annular surfaces.

[0012] Preferably, an embedding groove is provided on the inner ring surface of the rubber stopper tube, the long side length of the embedding groove is equal to the tube length of the rubber stopper tube, four embedding grooves are provided, and the four embedding grooves are distributed in the inner ring opening of the rubber stopper tube in a "cross" shape, and a plastic strip is fixed on the surface of the embedding groove, the plastic strip is an arc-shaped strip, and the inner ring diameter of the plastic strip is equal to the inner ring diameter of the rubber stopper tube.

[0013] Preferably, the tube length of the inner support tube is equal to the tube length of the rubber sealing sleeve.

[0014] Preferably, the outer ring diameter of the elastic sealing ring is equal to the outer ring diameter of the rubber sealing sleeve, and an annular hollow cavity A is provided inside the elastic sealing ring.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The cold air delivery pipe assembly sealing ring proposed by the utility model has a novel expansion and encryption device added to both ends of the cold air delivery pipe assembly sealing ring. After the two ends of the cold air delivery pipe assembly sealing ring are respectively inserted into the two cold air delivery pipes that need to be connected, the expansion and encryption device will be cooled as the cold air flows in the delivery pipes. An expansion ring is arranged inside the expansion and encryption device, and the expansion ring is made of a blend of polyethylene and EVA materials. The expansion ring made of the blend of polyethylene and EVA materials will produce a cold expansion and heat contraction effect when cooled, so that the expansion ring will expand outward, which will cause the expansion ring to push the elastic sealing ring outside it outward, so that the elastic sealing ring is firmly squeezed and pressed against the circular inner wall of the cold air delivery pipe, thereby playing the role of expansion and encryption at both ends of the assembly sealing ring, thereby increasing the sealing effect of the assembly sealing ring; further solving the problem that the sealing effect of the existing sealing ring will be weakened after a large number of expansion and contraction times; and ensuring the sealing of the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a side view of the structure of the utility model;

[0019] Figure 3 for Figure 2 Structural cross-section at AA in the middle;

[0020] Figure 4 for Figure 3 A schematic diagram of the structure enlargement in the middle;

[0021] Figure 5 This is a schematic diagram of the connection structure of the rubber connecting ring and the rubber plug tube of the utility model;

[0022] Figure 6 This is a schematic diagram of the connection structure between the inner support tube and the expansion ring of the utility model.

[0023] In the figure: rubber sealing sleeve 1, sealing ring at the joint 2, reserved hole 3, inner support tube 4, expansion ring 5, elastic sealing ring 6, annular hollow cavity A 7, annular hollow cavity B 8, rubber connecting ring 9, rubber plug tube 10, missing groove 11, embedded groove 12, plastic strip 13. DETAILED DESCRIPTION

[0024] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Embodiment 1

[0026] See also Figure 1 , Figure 2 as well as Figure 6The utility model provides a technical solution: a cold air delivery pipe assembly sealing ring, comprising a rubber sealing sleeve 1, the outer ring surface of the rubber sealing sleeve 1 is integrally formed with a docking sealing ring 2, the surface of the docking sealing ring 2 is provided with a reserved hole 3, a rubber plug tube 10 is inserted into the reserved hole 3, an inner support tube 4 is fixed to the inner ring surface of the rubber sealing sleeve 1, expansion rings 5 ​​are fixed at both ends of the inner support tube 4, an elastic sealing ring 6 is fixed to the outer ring surface of the expansion ring 5, the tube length of the inner support tube 4 is equal to the tube length of the rubber sealing sleeve 1, the outer ring diameter of the elastic sealing ring 6 is equal to the outer ring diameter of the rubber sealing sleeve 1, and an annular hollow cavity A 7 is provided inside the elastic sealing ring 6, the docking sealing ring 2 is an annular plate-shaped structure, the docking sealing ring 2 is centered on the outer ring surface of the rubber sealing sleeve 1, an annular hollow cavity B 8 is provided inside the docking sealing ring 2, the reserved hole 3 and the annular hollow cavity B 8 is connected, a plurality of reserved holes 3 are provided, and the plurality of reserved holes 3 are arranged and distributed with equal distance and size along the annular surface of the sealing ring 2 at the butt joint, and the annular hollow cavity B 8 divides the reserved holes 3 into two groups.

[0027] The rubber sealing sleeve 1 and the joint sealing ring 2 are both made of soft rubber material by injection molding. An inner support tube 4 is arranged inside the rubber sealing sleeve 1. The rubber sealing sleeve 1 is fixedly connected to the inner support tube 4 by an adhesive. After the rubber sealing sleeve 1 is sleeved onto the circular outer part of the inner support tube 4, it is in a slightly elastic expansion state. An annular hollow cavity B8 is also arranged inside the annular part of the joint sealing ring 2. The inner and outer walls of the rubber sealing sleeve 1 and the joint sealing ring 2 are smooth and free of burrs. When the cold air delivery pipe assembly sealing ring is used to assemble the cold air delivery pipes between the two cold air delivery pipes to be assembled, the cold air delivery pipe assembly sealing ring is used to assemble the cold air delivery pipes between the two cold air delivery pipes to be assembled. When sealing the connection, first, you need to put the rubber sealing sleeve 1 onto the outside of the inner support tube 4, and fix the rubber sealing sleeve 1 and the inner support tube 4 by adhesive, and then prepare to use the cold air delivery pipe to assemble the sealing ring. Specifically, the two ends of the rubber sealing sleeve 1 need to be inserted into the two cold air delivery pipes that need to be connected through the inner support tube 4 on its inner wall, until the two cold air delivery pipes are firmly in contact with the sealing ring 2 at the connection, and then maintain the device and use the pipe connecting frame at the connection to fix the pipe, and then the cold air delivery pipe can be put into use normally.

[0028] The cavity thickness of the annular hollow cavity A7 is one third of the thickness of the elastic sealing ring 6. The expansion ring 5 is mainly made of a blend of polyethylene and EVA materials, and both polyethylene and EVA materials will expand after being cooled, and the expansion ring 5 is fixedly connected to the elastic sealing ring 6 by an adhesive. Both polyethylene and EVA materials have cold expansion and heat shrinkage effects, so when cold air passes through the cold air delivery pipe, the expansion ring 5 made of polyethylene and EVA materials will expand due to the cold. Because the elastic sealing ring 6 is fixed on the outer wall of the expansion ring 5, the outward expansion of the expansion ring 5 will firmly press the elastic sealing ring 6 against the inner wall of the cold air pipe, and form a situation that the expansion ring 5 and the cold air pipe firmly clamp the elastic sealing ring 6, and then cooperate with the annular hollow cavity A7 inside the elastic sealing ring 6. When the elastic sealing ring 6 is squeezed, the annular hollow cavity A7 inside it will be compressed, thereby providing a rebound force, so that the elastic sealing ring 6 can produce a very strong sealing effect at the joint with the cold air pipe, thereby increasing the sealing performance of the assembled sealing ring.

[0029] Embodiment 2

[0030] On the basis of the first embodiment, in order to realize the sealing ring 2 at the joint to be clamped between the two flanges for sealing and to reinforce the bolt installation, the annular hollow cavity B A rubber connecting ring 9 is fixed between the two parallel side walls of 8, and the inner ring diameter of the rubber connecting ring 9 is equal to the aperture of the reserved hole 3. A notch 11 is provided on the outer ring surface of the rubber connecting ring 9, and the notch 11 is an annular groove with a "U"-shaped fracture. The rubber plug tube 10 is integrally formed on the inner ring surface of the rubber connecting ring 9. The length of the rubber plug tube 10 is greater than the thickness of the sealing ring 2 at the joint. The outer ring surfaces of both ends of the rubber plug tube 10 are provided with slopes, and the slopes are annular surfaces; an embedding groove 12 is provided on the inner ring surface of the rubber plug tube 10, and the long side length of the embedding groove 12 is equal to the tube length of the rubber plug tube 10. There are four embedding grooves 12, and the four embedding grooves 12 are distributed in the inner ring mouth of the rubber plug tube 10 in a "cross" shape. A plastic strip 13 is fixed on the surface of the embedding groove 12, and the plastic strip 13 is an arc-shaped strip, and the inner ring diameter of the plastic strip 13 is equal to the inner ring diameter of the rubber plug tube 10.

[0031] When the ends of the pipes mounted at both ends of the rubber sealing sleeve 1 are both installed with flanges, that is, the two pipes are fixed by flanges and bolts, after the two flanges clamp the sealing ring 2 at the joint, the two ends of the rubber plug tube 10 are respectively inserted into the bolt holes on the surfaces of the two flanges. After the bolts are passed through the bolt holes of the two flanges and the rubber plug tube 10, the rubber plug tube 10 is clamped between the bolts and the bolt holes to act as an elastic pad to prevent the bolts from loosening and falling off.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sealing ring for assembling a cold air delivery pipe, comprising a rubber sealing sleeve (1), the outer ring surface of the rubber sealing sleeve (1) being integrally formed with a sealing ring (2) at a joint, characterized in that: A reserved hole (3) is provided on the surface of the sealing ring (2) at the joint, a rubber plug tube (10) is inserted into the reserved hole (3), an inner support tube (4) is fixed to the inner ring surface of the rubber sealing sleeve (1), expansion rings (5) are fixed at both ends of the inner support tube (4), and an elastic sealing ring (6) is sleeved and fixed on the outer ring surface of the expansion ring (5).

2. The cold air delivery pipe assembly sealing ring according to claim 1, characterized in that: The joint sealing ring (2) is an annular plate-shaped structure. The joint sealing ring (2) is centered on the outer ring surface of the rubber sealing sleeve (1). An annular hollow cavity B (8) is provided inside the joint sealing ring (2). The reserved hole (3) is connected to the annular hollow cavity B (8).

3. The cold air delivery pipe assembly sealing ring according to claim 2, characterized in that: The reserved holes (3) are provided in plurality, and the plurality of reserved holes (3) are arranged and distributed at equal distances and in equal sizes along the annular surface of the sealing ring (2) at the joint, and the annular hollow cavity B (8) divides the reserved holes (3) into two groups.

4. The cold air delivery pipe assembly sealing ring according to claim 2, characterized in that: A rubber connecting ring (9) is fixed between two parallel side walls of the annular hollow cavity B (8), and the inner ring diameter of the rubber connecting ring (9) is equal to the hole diameter of the reserved hole (3).

5. The cold air delivery pipe assembly sealing ring according to claim 4, characterized in that: The outer ring surface of the rubber connecting ring (9) is provided with a notch (11), and the notch (11) is an annular groove with a "U"-shaped fracture.

6. The cold air delivery pipe assembly sealing ring according to claim 1, characterized in that: The rubber stopper tube (10) is integrally formed on the inner ring surface of the rubber connecting ring (9), the length of the rubber stopper tube (10) is greater than the thickness of the sealing ring (2) at the joint, and the outer ring surfaces at both ends of the rubber stopper tube (10) are provided with slope surfaces, which are annular surfaces.

7. The cold air delivery pipe assembly sealing ring according to claim 1, characterized in that: The inner ring surface of the rubber stopper tube (10) is provided with an embedding groove (12), the long side length of the embedding groove (12) is equal to the tube length of the rubber stopper tube (10), four embedding grooves (12) are provided, and the four embedding grooves (12) are distributed in the inner ring opening of the rubber stopper tube (10) in a "cross" shape, and a plastic strip (13) is fixed on the surface of the embedding groove (12), the plastic strip (13) is an arc-shaped strip, and the inner ring diameter of the plastic strip (13) is equal to the inner ring diameter of the rubber stopper tube (10).

8. The cold air delivery pipe assembly sealing ring according to claim 1, characterized in that: The tube length of the inner support tube (4) is equal to the tube length of the rubber sealing sleeve (1).

9. The cold air delivery pipe assembly sealing ring according to claim 1, characterized in that: The outer ring diameter of the elastic sealing ring (6) is equal to the outer ring diameter of the rubber sealing sleeve (1), and an annular hollow cavity A (7) is provided inside the elastic sealing ring (6).

Images