Phase change material cold storage equipment

Abstract

The utility model discloses phase-change material cold storage equipment which comprises a shell, extending shells are installed on the two sides of the shell, a feeding opening is formed in the upper end of the shell, a sealing cover is installed on the outer side of the feeding opening, a sleeve rod is installed on the inner wall of the sealing cover, an extending rod is arranged in the sleeve rod, and the extending rod is connected with the feeding opening. A sealing plug is installed at the end, away from the sleeve rod, of the extension rod, a limiting groove is formed in the edge of the sealing cover, a limiting ring is arranged on the outer side of the sealing cover and located on the outer side of the feeding port, a plug pin is fixed to the surface of the limiting ring and located in the limiting groove, and a reset spring is installed on the limiting ring. According to the phase-change material cold storage equipment, the large-area extension shell can be integrally stretched, extended and widened through the stepped flexible structure, so that the situation that the shell and the extension shell are expanded and broken is avoided, the sealing step is simplified, meanwhile, the situation that a feeding port needs to be punched can be avoided, and the influence on the structural stability of the feeding port is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of phase change materials, in particular to a phase change material cold storage device. Background Art

[0002] The phase-change cold storage ice box injects phase-change cold storage material into its inner cavity through the liquid filling port, so that it is used to preserve objects at low temperatures after storing cold. It is generally set in an insulation box to cool the insulation box and is used for low-temperature long-distance transportation. The insulation effect directly affects the quality of the preserved items. Therefore, it is now common to hang multiple ice boxes in a container to achieve the effect of cooling the container.

[0003] In the related technology, a Chinese patent with publication number CN218840146U proposes a phase change material cold storage container, in which a stress release hole is provided on the shell to prevent the phase change material from causing tearing or bursting of the container when it produces thermal expansion and contraction. The sealing column is inserted into the feed port, and the outer edge moves to the end position of the feed port. The fixing rod passes through the rubber ring and the outer edge in turn, and the snap-on cover is set on the fixing rod. The protrusion moves into the slide groove, driving the snap-on cover to rotate, and the protrusion moves into the arc groove to achieve the fixing effect of the snap-on cover. At the same time, the rubber ring is squeezed and deformed to ensure the sealing between the sealing column and the feed port.

[0004] The above-mentioned related technologies have the following defects: 1. The stress release holes distributed at equal intervals are only distributed in local positions on the shell. When the phase change material solidifies and expands in a flat position on the shell, the non-stress release hole area is also prone to the risk of bursting, and the large-area side panel on the shell cannot perform deformation buffering; 2. The sealing column is inserted into the feed port, and its edge is installed on the feed port through a fixing rod. The above scheme requires holes to be opened on the outer edge of the sealing column and the feed port, which affects the stability of the outer edge of the sealing column and the feed port structure. At the same time, the installation of the sealing column increases the complexity of the sealing work of the feed port, which is prone to damage and leakage. At the same time, the sealing cover installed on the feed port does not have a self-locking structure, which causes the sealing cover to rotate in the opposite direction and loosen when it vibrates under the influence of the external environment.

[0005] In response to the above problems, an innovative design was carried out based on the original cold storage equipment. Utility Model Content

[0006] The purpose of the utility model is to provide a phase change material cold storage device to solve the technical problems proposed in the above background technology that when the phase change material solidifies and expands in volume, the non-stress release hole area is also prone to the risk of bursting, the large area of ​​the side plate on the shell cannot perform deformation buffering, the outer edge of the sealing column and the feed port are opened, which affects the stability of the outer edge of the sealing column and the feed port structure, and the sealing cover has no self-locking structure when installed on the feed port.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a phase change material cold storage device, comprising a shell, extension shells are installed on both sides of the shell, a feed port is installed on the upper end of the shell, a sealing cover is installed on the outer side of the feed port, a sleeve rod is installed on the inner wall of the sealing cover, an extension rod is arranged inside the sleeve rod, a sealing plug is installed on the end of the extension rod away from the sleeve rod, a limiting groove is provided on the edge of the sealing cover, a limiting ring is provided on the outer side of the sealing cover, the limiting ring is located on the outer side of the feed port, a pin is fixed on the surface of the limiting ring, the pin is located in the limiting groove, a reset spring is installed on the limiting ring, and the limiting ring is connected to the feed port through the reset spring.

[0008] Preferably, the connection between the extension shell and the shell body is a stepped flexible structure.

[0009] Preferably, the feed port and the sealing cover are threadedly connected, and a retaining ring is fixedly provided on the inner wall of the sealing cover, and the retaining ring is tightly pressed against the top of the feed port.

[0010] Preferably, the extension rod is in the shape of a square rod, and the extension rod and the sleeve rod form a telescopic structure.

[0011] Preferably, an adjusting rod is installed on the internal thread of the extension rod, and the adjusting rod is rotatably connected to the sealing cover.

[0012] Preferably, the inner wall of the feed port opening is an inclined structure, the sealing plug and the feed port are matched with each other, a sealing ring is provided at the joint between the sealing plug and the feed port, and the sealing ring and the sealing plug are designed as an integrated whole.

[0013] Preferably, the limiting grooves and the latches are distributed at equal angles on the cover and the limiting ring, respectively, and the limiting grooves and the latches correspond one to one.

[0014] Preferably, the limiting ring is nested on the outside of the feed port, and the return spring pushes the limiting ring to slide on the outside of the feed port.

[0015] Preferably, a guide rod is fixed on the inner wall of the limiting ring, a guide groove is provided on the surface of the feed port, and the guide rod is slidably connected to the feed port via the guide groove.

[0016] Compared with the prior art, the utility model has the following beneficial effects: the phase change material cold storage device,

[0017] The connection between the extension shell and the shell is a stepped flexible structure. When the solidified volume of the phase change material increases, the large-area extension shell can be stretched, extended and widened through the stepped flexible structure as a whole, thereby avoiding the shell and the extension shell from bursting. When the cover is tightened on the feed port, the reset spring can push the limit ring to drive the latch to insert into the limit groove on the cover, so as to lock the cover conveniently and prevent the cover from rotating in the opposite direction and loosening. After the cover is tightened on the feed port, the adjusting rod is turned to push the extension rod out of the sleeve rod through the thread, so that the extension rod can drive the sealing plug to be tightened in the feed port to seal it. While simplifying the sealing step, it can also avoid the need to punch holes in the feed port to prevent affecting the structural stability of the feed port. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the cross-sectional connection structure of the sealing cover and the feed port of the utility model;

[0020] Figure 3 This is a schematic diagram of the top-section installation structure of the limit ring of the utility model;

[0021] Figure 4 For this utility model Figure 1 Schematic diagram of the cross-sectional structure at AA in FIG.

[0022] Figure 5 For this utility model Figure 2 A is a schematic diagram of the enlarged cross-sectional structure.

[0023] In the figure: 1. Shell; 2. Extension shell; 3. Feed port; 31. Guide groove; 4. Cover; 41. Sleeve rod; 42. Extension rod; 43. Adjustment rod; 44. Sealing plug; 45. Sealing ring; 46. Limiting groove; 5. Limiting ring; 51. Latch; 52. Guide rod; 53. Return spring. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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] See also Figure 1-Figure 5The utility model provides a technical solution: a phase change material cold storage device, comprising a shell 1, with extension shells 2 installed on both sides of the shell 1, and the connection between the extension shell 2 and the shell 1 is a stepped flexible structure. When the solidified volume of the phase change material increases, the large-area extension shell 2 as a whole can be stretched, extended and widened along the stepped flexible structure on both sides of the shell 1, thereby avoiding the shell 1 and the extension shell 2 from bursting;

[0026] The upper end of the shell 1 is provided with a feed port 3, through which the phase change material is poured into the shell 1, and a cover 4 is provided on the outer side of the feed port 3, the feed port 3 and the cover 4 are threadedly connected, a retaining ring is fixedly provided on the inner wall of the cover 4, the retaining ring is pressed against the top of the feed port 3, and the cover 4 is screwed. When the feed port 3 is pressed against the retaining ring, the cover 4 is tightened to a specified position, which is convenient for aligning the subsequent related structures, and a sleeve rod 41 is provided on the inner wall of the cover 4, and an extension rod 42 is provided inside the sleeve rod 41, and the extension rod 42 is provided inside the sleeve rod 41. The rod 42 is a square rod in shape. The extension rod 42 and the sleeve rod 41 form a telescopic structure. The extension rod 42 is internally threaded with an adjusting rod 43. The adjusting rod 43 is rotatably connected to the cover 4. When the adjusting rod 43 is turned, the adjusting rod 43 rotates on the cover 4. At this time, the adjusting rod 43 pushes the extension rod 42 to perform telescopic movement in the sleeve rod 41 through the thread. A sealing plug 44 is installed at one end of the extension rod 42 away from the sleeve rod 41, so that the extension rod 42 can drive the sealing plug 44 to seal the feed port 3.

[0027] The inner wall of the opening of the feed port 3 is an inclined structure, the sealing plug 44 and the feed port 3 are matched with each other, and a sealing ring 45 is provided at the joint between the sealing plug 44 and the feed port 3. The sealing ring 45 and the sealing plug 44 are designed as an integrated whole. After the sealing plug 44 is pushed into the feed port 3, the sealing ring 45 on the surface of the sealing plug 44 will be pressed tightly against the inner wall of the feed port 3 to improve the sealing performance. A limiting groove 46 is provided on the edge of the sealing cover 4, and a limiting ring 5 is provided on the outer side of the sealing cover 4. The limiting ring 5 is located on the outer side of the feed port 3, and a guide rod 52 is fixed on the inner wall of the limiting ring 5. A guide groove 31 is provided on the surface of the feed port 3, and the guide rod 52 is slidably connected to the feed port 3 through the guide groove 31. The guide rod 52 cooperates with the guide groove 31 to limit the limiting ring 5 from moving vertically upward or downward on the outer side of the feed port 3, thereby preventing the limiting ring 5 from rotating and dislocating.

[0028] A latch 51 is fixed on the surface of the limit ring 5, and the latch 51 is located in the limit groove 46. A return spring 53 is installed on the limit ring 5. The limit ring 5 is connected to the feed port 3 through the return spring 53, and the limit ring 5 is nested in the outer side of the feed port 3. The return spring 53 pushes the limit ring 5 to slide on the outer side of the feed port 3, and the limit ring 5 can be manually pushed to slide downward on the outer side of the feed port 3. After the cover 4 is tightened on the feed port 3, the manually pushed limit ring 5 is released, and at this time the return spring 53 can push the limit ring 5 to reset upward. The limit groove 46 and the latch 51 are respectively distributed at equal angles on the cover 4 and the limit ring 5, and the limit groove 46 and the latch 51 correspond one to one, so that the limit ring 5 moving upward drives the latch 51 to insert into the limit groove 46 on the cover 4 to lock the cover 4, thereby preventing the cover 4 from rotating in the opposite direction and loosening.

[0029] 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 phase change material cold storage device, comprising a housing (1), characterized in that: Extension shells (2) are installed on both sides of the shell (1), a feed port (3) is installed on the upper end of the shell (1), a cover (4) is installed on the outer side of the feed port (3), a sleeve rod (41) is installed on the inner wall of the cover (4), an extension rod (42) is arranged inside the sleeve rod (41), a sealing plug (44) is installed on the end of the extension rod (42) away from the sleeve rod (41), a limiting groove (46) is provided on the edge of the cover (4), a limiting ring (5) is arranged on the outer side of the cover (4), the limiting ring (5) is located on the outer side of the feed port (3), a latch (51) is fixed on the surface of the limiting ring (5), the latch (51) is located in the limiting groove (46), a return spring (53) is installed on the limiting ring (5), and the limiting ring (5) is connected to the feed port (3) through the return spring (53).

2. A phase change material cold storage device according to claim 1, characterized in that: The connection between the extension shell (2) and the shell (1) is a stepped flexible structure.

3. A phase change material cold storage device according to claim 1, characterized in that: The feed port (3) and the sealing cover (4) are connected by threads, and a retaining ring is fixedly provided on the inner wall of the sealing cover (4), and the retaining ring is tightly pressed against the top of the feed port (3).

4. A phase change material cold storage device according to claim 1, characterized in that: The extension rod (42) has a square rod shape, and the extension rod (42) and the sleeve rod (41) form a telescopic structure.

5. The phase change material cold storage device according to claim 1, characterized in that: The extension rod (42) is internally threaded with an adjusting rod (43), and the adjusting rod (43) is rotationally connected to the sealing cover (4).

6. A phase change material cold storage device according to claim 1, characterized in that: The inner wall of the opening of the feed port (3) is an inclined structure, the sealing plug (44) and the feed port (3) are matched with each other, and a sealing ring (45) is provided at the joint between the sealing plug (44) and the feed port (3), and the sealing ring (45) and the sealing plug (44) are designed as an integrated whole.

7. The phase change material cold storage device according to claim 1, characterized in that: The limiting grooves (46) and the latch pins (51) are respectively distributed at equal angles on the cover (4) and the limiting ring (5), and the limiting grooves (46) and the latch pins (51) correspond one to one.

8. The phase change material cold storage device according to claim 1, characterized in that: The limiting ring (5) is nested on the outside of the feed port (3), and the return spring (53) pushes the limiting ring (5) to slide on the outside of the feed port (3).

9. The phase change material cold storage device according to claim 1, characterized in that: A guide rod (52) is fixed on the inner wall of the limiting ring (5), a guide groove (31) is provided on the surface of the feed port (3), and the guide rod (52) is slidably connected to the feed port (3) via the guide groove (31).

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