A sealing device for cold storage insulation board joints

Abstract

The utility model discloses a cold storage insulation board joint is sealed device belongs to sealed device technical field, including the seal shell, the seal shell one side outer wall is equipped with the mounting hole, the seal shell one side outer wall is equipped with the connecting groove, the connecting groove inner wall is equipped with the installation slot, constant pressure mechanism, constant pressure mechanism includes the installation pipe of being worn in the mounting hole, installation pipe one end is connected with the connecting pipe, the connecting pipe one end slidingly connected has the mobile plug, the mobile plug is configured as relative connecting pipe sliding to control installation pipe internal space intercommunication or close, connecting mechanism, connecting mechanism includes the elastic strip of setting in the installation slot, the elastic strip is configured as with the thermal insulation board outer wall and is pasted together, and the elastic strip outer wall shape changes according to the thermal insulation board profile, in the utility model, through setting constant pressure mechanism, keeps the dry air in pressure chamber and prevents cold air from entering, through setting connecting mechanism, makes device and thermal insulation board side wall connection more closely.

Description

Technical Field

[0001] This utility model belongs to the technical field of sealing devices, and in particular relates to a sealing device for the joints of cold storage insulation panels. Background Technology

[0002] Cold storage insulation panels are composite insulation materials specifically designed for building cold storage facilities. Their outer layer is typically made of color-coated steel, stainless steel, or rust-proof aluminum, providing structural strength and corrosion protection. The core material is primarily polyurethane foam, but polystyrene or phenolic resin are also options. These materials all have ultra-low thermal conductivity, effectively preventing cold bridging and reducing cold loss. The insulation panels offer thermal insulation, structural stability, and safety protection, and are widely used in food cold chain logistics, pharmaceutical warehousing, logistics centers, and other locations requiring low-temperature environments.

[0003] In the construction of cold storage insulation systems, the sealing treatment of the joints of insulation boards is crucial to the overall insulation performance and structural stability. Traditional sealing devices for cold storage insulation board joints, due to the thermal expansion and contraction effect in low-temperature environments, cause the air volume inside the sealing cavity to shrink, creating negative pressure. This easily draws in moisture-rich cold air from the external cold storage into the joint. The absorbed moisture freezes and expands under low-temperature conditions, generating ice expansion stress, which causes the sealing material to detach from the insulation board, compromising the seal integrity, reducing the energy efficiency of the cold storage, and increasing maintenance costs. At the same time, traditional sealing devices for cold storage insulation board joints often use sealing strips made of fixed shapes or high-hardness materials with poor flexibility. When the outer wall of the insulation board has curvature changes, it is difficult to fit tightly, resulting in gaps between the sealing strip and the board surface, forming a cold bridge effect. This further introduces external moisture, exacerbating the risk of icing and reducing installation stability and long-term sealing reliability. Utility Model Content

[0004] The purpose of this utility model is to solve the problem of stress caused by the freezing of water-containing cold air entering the joints of insulation boards, which leads to seal failure, and to propose a sealing device for the joints of cold storage insulation boards.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a sealing device for joints of cold storage insulation panels, comprising a sealing shell, an installation hole on one side of the outer wall of the sealing shell, a connecting groove on one side of the outer wall of the sealing shell, an installation groove on the inner wall of the connecting groove, a constant pressure mechanism, the constant pressure mechanism comprising an installation tube passing through the installation hole, one end of the installation tube being connected to a connecting tube, and one end of the connecting tube being slidably connected to a movable plug, the movable plug being configured to slide relative to the connecting tube to control the communication and closure of the internal space of the installation tube, and a connecting mechanism, the connecting mechanism comprising an elastic strip disposed in the installation groove, the elastic strip being configured to fit against the outer wall of the insulation panel, and the shape of the outer wall of the elastic strip changing according to the contour of the insulation panel.

[0006] Preferably, one side of the sealing shell is provided with multiple interlocking teeth, and the cavity formed between the two sealing shells after the interlocking teeth are interlocked is a pressure chamber.

[0007] Preferably, the installation tube is provided with an insertion tube inside, and an air vent is opened on the inner wall of one end of the insertion tube. The outer wall of one end of the movable plug is slidably connected to the inner wall of the other end of the insertion tube.

[0008] Preferably, the outer wall of the insertion tube is provided with multiple sealing grooves, and a spring is provided inside the insertion tube. The two ends of the spring are respectively connected to the inner wall of one end of the insertion tube and the outer wall of one side of the movable plug.

[0009] Preferably, the outer wall of the movable plug is provided with multiple vent holes around the axis, the outer wall of the connecting pipe is provided with multiple sealing rings, one end of the connecting pipe is connected to a drying pipe, and the drying pipe has a receiving cavity inside.

[0010] Preferably, the connecting mechanism further includes multiple elastic plates disposed inside the mounting groove, and multiple deformation grooves are formed on the outer walls of both sides of the elastic strip.

[0011] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: 1. In this utility model, by setting a constant pressure mechanism, when the cold storage lowers the internal air temperature due to the low temperature, the air volume inside the pressure chamber contracts due to the principle of thermal expansion and contraction, generating negative pressure. The constant pressure device is automatically activated, and room temperature air is forced into the pressure chamber by external atmospheric pressure. The air is dried before entering the pressure chamber, so that the air inside the pressure chamber is always kept dry. The dry air fills the connection gap of the sealing shell, preventing water-containing air from the cold storage side from entering the gap and freezing and expanding the device, thus ensuring the integrity and sealing effect of the seal.

[0012] 2. In this utility model, by setting a connecting device, the elastic plate presses the elastic strip with elastic force, making the elastic strip and the insulation board fit more tightly. At the same time, the elastic strip can conform to the outer contour of the insulation board, reducing the gap between it and the insulation board, and ensuring the long-term sealing stability of the device after installation. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure of a sealing device for joints of cold storage insulation panels proposed in this utility model; Figure 2 This is a schematic diagram showing the disassembled structure of a sealing device for joints of cold storage insulation panels proposed in this utility model; Figure 3 This is a half-sectional view of the constant pressure mechanism of a sealing device for joints of cold storage insulation panels proposed in this utility model. Figure 4This is a half-sectional structural diagram of the connection mechanism of a sealing device for joints of cold storage insulation panels proposed in this utility model.

[0014] Legend: 1. Sealing shell; 2. Interlaced teeth; 3. Connecting groove; 4. Mounting groove; 5. Mounting hole; 6. Constant pressure mechanism; 601. Mounting tube; 602. Insertion tube; 603. Vent hole; 604. Spring; 605. Sealing groove; 606. Moving plug; 607. Vent hole; 608. Connecting tube; 609. Sealing ring; 610. Drying tube; 611. Receiving cavity; 7. Connecting mechanism; 701. Elastic plate; 702. Elastic strip; 703. Deformation groove; 8. Pressure chamber. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figures 1-4 This utility model provides a technical solution: a sealing device for the joint of a cold storage insulation board, including a sealing shell 1, an installation hole 5 on one side of the outer wall of the sealing shell 1, a connecting groove 3 on one side of the outer wall of the sealing shell 1, an installation groove 4 on the inner wall of the connecting groove 3, a constant pressure mechanism 6, the constant pressure mechanism 6 including an installation tube 601 passing through the installation hole 5, a connecting tube 608 connected to one end of the installation tube 601, a movable plug 606 slidably connected to one end of the connecting tube 608, the movable plug 606 being configured to slide relative to the connecting tube 608 to control the communication and closure of the internal space of the installation tube 601, and a connecting mechanism 7, the connecting mechanism 7 including an elastic strip 702 disposed in the installation groove 4, the elastic strip 702 being configured to fit against the outer wall of the insulation board and the shape of the outer wall of the elastic strip 702 changing according to the outline of the insulation board.

[0017] Multiple staggered teeth 2 are provided on one side of the sealing shell 1. After the staggered teeth 2 are inserted into each other, the cavity formed between the two sealing shells 1 is the pressure chamber 8.

[0018] An insertion tube 602 is provided inside the installation tube 601. An air vent 603 is provided on the inner wall of one end of the insertion tube 602. The outer wall of one end of the movable plug 606 is slidably connected to the inner wall of the other end of the insertion tube 602.

[0019] The outer wall of the insertion tube 602 is provided with multiple sealing grooves 605, and a spring 604 is provided inside the insertion tube 602. The two ends of the spring 604 are respectively connected to the inner wall of one end of the insertion tube 602 and the outer wall of one side of the movable plug 606.

[0020] The outer wall of the movable plug 606 is provided with multiple vent holes 607 along the axis, the outer wall of the connecting pipe 608 is provided with multiple sealing rings 609, one end of the connecting pipe 608 is connected to the drying pipe 610, and the drying pipe 610 is provided with a receiving cavity 611.

[0021] Specifically, the interlocking teeth 2 on one side of the two sealing shells 1 are interlocked and engaged. The top or bottom plates of the two sealing shells 1 are fitted with the top or bottom of the interlocking teeth 2, making the two sealing shells 1 tightly connected. The mounting holes 5 on one side of the two sealing shells 1 are aligned, and the constant pressure mechanism 6 is inserted into the mounting holes 5 to lock the relative position of the two sealing shells 1 into a whole. The cavity between the side walls of the two sealing shells 1 and the upper and lower plates is the pressure chamber 8. The pressure chamber 8 is filled with room temperature air. When the low temperature in the cold storage causes the temperature inside the pressure chamber 8 to drop, the air volume inside the pressure chamber 8 shrinks due to thermal expansion and contraction. As the pressure chamber 8 contracts, a negative pressure is formed, and the atmospheric pressure on the room temperature side of the device is higher than the internal pressure of the pressure chamber 8. In the initial state, the hollow end of the movable plug 606 is completely embedded inside one end of the connecting tube 608. At this time, the vent 607 is sealed by the inner wall of the connecting tube 608, the internal space of the mounting tube 601 is sealed, the outer wall of the insertion tube 602 is in close contact with the inner wall of the mounting tube 601, and multiple sealing grooves 605 are provided on the outer wall of the insertion tube 602, preventing air from passing between the outer wall of the insertion tube 602 and the inner wall of the connecting tube 608. Two sealing rings 6 are embedded on the outer wall of the end of the connecting tube 608 that is inserted into the mounting tube 601. 09. To ensure that air cannot pass between the outer wall of the connecting tube 608 and the inner wall of the mounting tube 601, atmospheric pressure pushes air through the drying tube 610 into the connecting tube 608. The air then enters the interior of the movable plug 606 and pushes it away from the connecting tube 608. The movable plug 606 moves and compresses the spring 604. The vent 607 exits the interior of the connecting tube 608, and air enters the interior of the insertion tube 602 through the vent 607 and exits from the vent 603. It then enters the pressure chamber 8 from one end of the mounting tube 601, restoring the pressure inside the pressure chamber 8. When the pressure inside the pressure chamber 8 returns to normal, the spring 604 pushes the movable plug 606 back to its original position through its elasticity, sealing the internal space of the installation tube 601 again. A small amount of room temperature air fills the gaps between the interlaced teeth 2 on the cold storage side of the sealing shell 1, preventing the water-containing cold air on the cold storage side from entering the gaps and freezing, ensuring a tight connection between the two sealing shells 1 and ensuring a sealing effect. The drying tube 610 is a replaceable structure, and the accommodating cavity 611 is filled with desiccant to ensure that the air entering the pressure chamber 8 is dry, preventing water-containing gas from entering the gaps and freezing and expanding the gaps.

[0022] It should be noted that the desiccant mentioned above is silica gel desiccant, whose main component is silicon dioxide. It is a transparent or translucent granule with advantages such as being non-toxic, chemically stable, highly hygroscopic, and reusable. It is widely used for moisture protection in food, pharmaceuticals, and electronic products. This part is well-known technology in this field and will not be elaborated further here. The connecting mechanism 7 also includes multiple elastic plates 701 disposed inside the mounting groove 4, and multiple deformation grooves 703 are provided on the outer walls of both sides of the elastic strip 702.

[0023] Specifically, the outer walls of both sides of the insulation board are inserted into the connecting groove 3, and the outer walls of the insulation board contact one side of the outer wall of the elastic strip 702 and press the elastic strip 702 outward. The cross-sectional shape of the elastic plate 701 is V-shaped. The outer wall of the other side of the elastic strip 702 contacts the two ends of the V-shape of the elastic plate 701. The protruding part of the V-shape of the elastic plate 701 contacts the inner wall of the mounting groove 4. The elastic strip 702 presses the elastic plate 701, and the elastic plate 701 presses the elastic strip 702 in the opposite direction through its own elasticity, so that the elastic strip 702 fits more tightly with the outer wall of the insulation board. The multiple deformation grooves 703 opened on the outer walls of both sides of the elastic strip 702 can collapse inward, so that the elastic strip 702 can form a contoured area with the same outline as the outer wall of the insulation board, ensuring that the elastic strip 702 can also fit tightly with the irregular area of ​​the outer wall of the insulation board.

[0024] It should be noted that the elastic strip 702 mentioned above is made of rubber, which is a highly elastic polymer material with reversible deformation. It is elastic at room temperature and can produce large deformation under a small external force. It can return to its original shape after the external force is removed. This part is well-known technology in the field and will not be described in detail here.

[0025] It should be noted that the material of the elastic plate 701 mentioned above is polyurethane elastomer, which is a rigid elastic material. Its molecular structure contains soft segments (polyether or polyester) and hard segments (urethane). It achieves a balance between high elasticity and high strength through microphase separation, and has the advantages of wear resistance, oil resistance and tear resistance. This part is well known technology in the field and will not be described in detail here.

[0026] Working principle: During use, the operator aligns the connecting groove 3 of the sealing shell 1 with the side wall of the insulation board and installs the sealing shell 1 onto one side of the insulation board. After the side walls of the two insulation boards are installed, the sealing shells 1 are aligned. The interlocking teeth 2 of the two sealing shells 1 are interlocked to align the mounting holes 5. Then, the operator inserts the constant pressure mechanism 6 into the mounting holes 5 to lock the positions of the two sealing shells 1 relative to each other, thus completing the connection between the two insulation boards. The above operation is repeated to complete the connection between multiple insulation boards. After the connection is completed, the operator installs the insulation board into the designated position in the cold storage. After installation, the operator removes the old drying tube 610 and replaces it with a new drying tube 610 according to a fixed cycle to prevent the seal from failing.

[0027] In this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A sealing device for a joint of a cold storage insulation board, characterized in that, include: A sealing shell (1) has an installation hole (5) on one side of its outer wall, a connecting groove (3) on one side of its outer wall, and an installation groove (4) on the inner wall of its connecting groove (3). A constant pressure mechanism (6) includes an installation tube (601) passing through an installation hole (5), one end of the installation tube (601) being connected to a connecting tube (608), and one end of the connecting tube (608) being slidably connected to a movable plug (606), the movable plug (606) being configured to slide relative to the connecting tube (608) to control the connection and closure of the internal space of the installation tube (601); The connecting mechanism (7) includes an elastic strip (702) disposed in the mounting groove (4), the elastic strip (702) being configured to fit against the outer wall of the insulation board, and the shape of the outer wall of the elastic strip (702) changing according to the outline of the insulation board.

2. The sealing device for joints of cold storage insulation panels according to claim 1, characterized in that, The sealing shell (1) has multiple interlocking teeth (2) on one side. After the interlocking teeth (2) are interlocked, the cavity formed between the two sealing shells (1) is a pressure chamber (8).

3. A sealing device for joints of cold storage insulation panels according to claim 1, characterized in that, The installation tube (601) is provided with an insertion tube (602) inside. An air vent (603) is opened on the inner wall of one end of the insertion tube (602). The outer wall of one end of the movable plug (606) is slidably connected to the inner wall of the other end of the insertion tube (602).

4. A sealing device for joints of cold storage insulation panels according to claim 3, characterized in that, The outer wall of the insertion tube (602) is provided with multiple sealing grooves (605), and a spring (604) is provided inside the insertion tube (602). The two ends of the spring (604) are respectively connected to the inner wall of one end of the insertion tube (602) and the outer wall of one side of the movable plug (606).

5. A sealing device for joints of cold storage insulation panels according to claim 1, characterized in that, The outer wall of the movable plug (606) is provided with multiple vent holes (607) around the axis, the outer wall of the connecting pipe (608) is provided with multiple sealing rings (609), one end of the connecting pipe (608) is connected to a drying pipe (610), and the drying pipe (610) is provided with a receiving cavity (611).

6. A sealing device for joints of cold storage insulation panels according to claim 1, characterized in that, The connecting mechanism (7) also includes multiple elastic plates (701) disposed inside the mounting groove (4), and multiple deformation grooves (703) are provided on the outer walls of both sides of the elastic strip (702).

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