Milk tank truck, tank body and forming method of tank body

Abstract

The milk tank truck comprises an inner tank and an expansion plate, the expansion plate is welded to the outer surface of the inner tank through pressure welding spots, an expansion space is formed between the expansion plate and the outer surface of the inner tank, a refrigerant feeding port is formed in the top of the expansion plate, and a refrigerant discharging port is formed in the top of the expansion plate. The bottom of the expansion plate is provided with a refrigerant feeding port, the outer surface of the expansion plate is provided with a heat preservation layer, the outer surface of the heat preservation layer is provided with an outer skin, the inner tank is provided with a tank opening, and the refrigerant feeding port and the refrigerant discharging port are externally connected with refrigeration equipment. The expansion space is formed between the outer wall of the inner tank and the expansion plate after expansion, during refrigeration, the area where a refrigerant flows through is larger, the refrigeration effect is faster and better, and low-temperature long-distance transportation of fresh milk is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of special vehicles, and in particular to a milk tanker, a tank body and a tank body forming method. Background Art

[0002] At present, fresh milk needs to be transported at low temperatures during long-distance transportation to prevent it from spoiling. Existing milk tankers generally use two methods to refrigerate and insulate milk. One is to set a coil inside the tank body, and the coil is connected to an external refrigeration device. This structure, because the coil is set inside the tank body, causes great inconvenience to the cleaning quality and efficiency during cleaning; the other is to set the coil on the outer surface of the tank body. Due to the limited contact area between the coil and the tank body, the cooling effect is not ideal, and the temperature at the front end of the tank body is often lower and the temperature at the tail end is higher, which is not conducive to the long-distance transportation of fresh milk. At the same time, due to the long length of the coil, the coil is prone to loosening after long-term use, which leads to loosening of the interfaces of the coil, resulting in refrigerant leakage, affecting the refrigeration effect, and even contaminating the fresh milk in the tank in severe cases. Summary of the invention

[0003] The present invention is to solve the above-mentioned shortcomings and provides a tank body, which comprises an inner tank and an expansion plate, the expansion plate is welded to the outer surface of the inner tank by pressure welding points, an expansion space is formed between the expansion plate and the outer surface of the inner tank, a refrigerant feed interface is provided at the top of the expansion plate, a refrigerant discharge interface is provided at the bottom of the expansion plate, an insulation layer is provided on the outer surface of the insulation layer, an outer skin is provided on the outer tank, a tank mouth is provided on the inner tank, and a refrigeration device is externally connected to the refrigerant feed interface and the refrigerant discharge interface.

[0004] The present invention also provides a can body forming method as described above, comprising the following steps: Lay down the tank body plate and open the lower tank opening hole on the tank body plate; Cut the expansion plate, and cut the upper tank opening, feed hole and discharge hole on the expansion plate; Lay the expansion plate flat on the tank body plate, and partially position weld the two sides of the expansion plate on the tank body plate so that the center of the upper tank mouth hole and the lower tank mouth hole coincide with each other; The tank body plate and the expansion plate are integrally rolled into a round shape, and then the circular tank body plate is separated from the circular expansion plate, and the circular tank body plate is made into an inner tank, and a refrigerant feed interface and a refrigerant discharge interface are welded at the feed hole and the discharge hole of the expansion plate; The circular expansion plate and the inner tank are re-nested and positioned, the expansion plate is fully welded to the inner tank around the periphery, the upper tank opening hole is fully welded to the lower tank opening hole, and the other parts of the expansion plate are matrix spot welded to the inner tank by a spot welding machine; An external expansion machine is connected to the refrigerant feed interface and the refrigerant discharge interface to expand the expansion plate so that an expansion space is formed at the unwelded area between the expansion plate and the tank plate; after the expansion is completed, the expansion machine is removed; Weld and install the tank mouth at the upper tank mouth hole and the lower tank mouth hole; An external refrigeration device is connected at the refrigerant feed interface and the refrigerant discharge interface; A heat-insulating layer and an outer skin are arranged on the outer surface of the expansion plate to form the tank body.

[0005] Furthermore, the area of ​​the expansion plate is smaller than the area of ​​the tank body plate.

[0006] Furthermore, the thickness of the tank body plate is 4-5 mm, and the thickness of the expansion plate is 1-3 mm.

[0007] Furthermore, the diameter of the upper tank mouth hole is greater than the diameter of the lower tank mouth hole.

[0008] The present invention further provides a milk tanker, comprising a chassis and a tank body arranged on the chassis, wherein the tank body is any one of the tank bodies described above.

[0009] The present invention has the following beneficial effects: 1. After expansion, an expansion space is formed between the outer wall of the inner tank and the expansion plate. During refrigeration, the area through which the refrigerant flows is larger, the refrigeration effect is faster and better, and it is conducive to the low-temperature long-distance transportation of fresh milk.

[0010] It is no longer necessary to set coils on the inside or outside wall of the tank, the structure is simpler, and the production cost is greatly reduced compared with before.

[0011] Since an expansion plate is provided on the outside of the inner tank, the strength of the inner tank is increased, making it more durable; at the same time, since the coil structure is abandoned, the refrigerant flows between the expansion plate and the outer wall of the inner tank, which improves the cooling effect and effectively prevents refrigerant leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings: Figure 1 It is a structural schematic diagram of the present invention.

[0013] Figure 2 It is a structural schematic diagram of the local positioning welding between the expansion plate and the tank plate.

[0014] Figure 3 It is a schematic diagram of the structure in which the tank body plate and the bulging plate are rolled as a whole.

[0015] Figure 4 It is a schematic diagram of the structure of the expansion plate and the inner tank after expansion.

[0016] Figure 5 It is a schematic diagram of the refrigerant flow area.

[0017] In the figure: tank mouth 1, refrigerant feed interface 2, pressure welding point 3, expansion plate 4, inner tank 5, insulation layer 6, outer skin 7, refrigerant discharge interface 8, tank body plate 9, expansion plate 10, discharge hole 11, feed hole 12, upper tank mouth hole 13, lower tank mouth hole 14. DETAILED DESCRIPTION

[0018] The following will disclose multiple embodiments of the present invention with drawings. For the purpose of clear description, many physical details will be described together in the following description. However, it should be understood that these physical details should not be used to limit the present invention. That is, in some embodiments of the present invention, these physical details are not necessary. In addition, for the purpose of simplifying the drawings, some conventional structures and components will be depicted in a simple schematic manner in the drawings.

[0019] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0020] like Figure 1 As shown, a tank body comprises an inner tank 5 and an expansion plate 4, wherein the expansion plate 4 is welded to the outer surface of the inner tank 5 by pressure welding points 3, and an expansion space is formed between the expansion plate 4 and the outer surface of the inner tank 5, a refrigerant feed interface 2 is provided on the top of the expansion plate 4, a refrigerant discharge interface 8 is provided on the bottom of the expansion plate 4, an insulation layer 6 is provided on the outer surface of the insulation layer 6, an outer skin 7 is provided on the outer tank 5, a tank mouth 1 is provided on the inner tank 5, and a refrigeration device is externally connected to the refrigerant feed interface 2 and the refrigerant discharge interface 8.

[0021] The present invention also provides a can body forming method as described above, comprising the following steps: The tank body plate 9 is provided, and a lower tank opening hole 14 is provided on the tank body plate; The bulging plate 10 is unloaded, and an upper tank opening 13, a feed hole 12 and a discharge hole 11 are cut out of the bulging plate; like Figure 2 As shown, the expansion plate 10 is laid flat on the tank body plate 9, and the two sides of the expansion plate 10 are partially positioned and welded on the tank body plate so that the center of the upper tank mouth hole 13 and the lower tank mouth hole 14 coincide with each other; like Figure 3 As shown, the tank body plate 9 and the expansion plate 10 are rolled into a circle as a whole, and then the circular tank body plate is separated from the circular expansion plate, and the circular tank body plate is made into an inner tank, and the refrigerant feed interface 2 and the refrigerant discharge interface 8 are welded at the feed hole 12 and the discharge hole 11 of the expansion plate; The circular expansion plate and the inner tank are re-nested and positioned, the expansion plate 10 is fully welded to the inner tank around the periphery, the upper tank opening hole 13 is fully welded to the lower tank opening hole 14, and the other parts of the expansion plate 10 are matrix spot welded to the inner tank by a spot welding machine; like Figure 4 As shown, an external expansion machine is connected to the refrigerant feed interface 2 and the refrigerant discharge interface 8 to expand the expansion plate 10 so that an expansion space is formed between the expansion plate 10 and the unwelded area on the tank plate 9; after the expansion is completed, the expansion machine is removed; The tank opening 1 is welded and installed at the upper tank opening hole 13 and the lower tank opening hole 14; Remove the expansion machine and connect external refrigeration equipment at the refrigerant feed interface 2 and the refrigerant discharge interface 8; A heat-insulating layer and an outer skin are arranged on the outer surface of the expansion plate to form the tank body.

[0022] In order to facilitate welding of the expansion plate to the tank body plate, the area of ​​the expansion plate is smaller than the area of ​​the tank body plate.

[0023] In order to make the expansion plate bulge more easily during expansion while the inner tank does not deform, the thickness of the tank body plate is 4-5mm, and the thickness of the expansion plate is 1-3mm.

[0024] In order to facilitate the installation of the tank mouth, the diameter of the upper tank mouth hole 13 is larger than the diameter of the lower tank mouth hole 14.

[0025] The present invention further provides a milk tanker, comprising a chassis and a tank body arranged on the chassis, wherein the tank body is any one of the tank bodies described above.

[0026] like Figure 5 As shown, an expansion space is formed between the outer wall of the inner tank and the expansion plate after expansion. During refrigeration, the area through which the refrigerant flows is larger, and the refrigeration effect is faster and better, which is conducive to the low-temperature long-distance transportation of fresh milk.

[0027] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A tank body, comprising an inner tank (5) and an expansion plate (4), characterized in that: The expansion plate (4) is welded to the outer surface of the inner tank (5) through a pressure welding point (3), and an expansion space is formed between the expansion plate (4) and the outer surface of the inner tank (5). A refrigerant feed interface (2) is provided at the top of the expansion plate (4), and a refrigerant discharge interface (8) is provided at the bottom of the expansion plate (4). The outer surface of the expansion plate (4) is provided with a heat preservation layer (6), and the outer surface of the heat preservation layer (6) is provided with an outer skin (7). The inner tank (5) is provided with a tank mouth (1), and the refrigerant feed interface (2) and the refrigerant discharge interface (8) are externally connected to a refrigeration device.

2. A can body forming method as claimed in claim 1, characterized in that: The steps include: Lay down the tank body plate and open the lower tank opening hole on the tank body plate; Cut the expansion plate, and cut the upper tank opening, feed hole and discharge hole on the expansion plate; Lay the expansion plate flat on the tank body plate, and partially position weld the two sides of the expansion plate on the tank body plate so that the center of the upper tank mouth hole and the lower tank mouth hole coincide with each other; The tank body plate and the expansion plate are integrally rolled into a round shape, and then the circular tank body plate is separated from the circular expansion plate, and the circular tank body plate is made into an inner tank, and a refrigerant feed interface and a refrigerant discharge interface are welded at the feed hole and the discharge hole of the expansion plate; The circular expansion plate and the inner tank are re-nested and positioned, the expansion plate is fully welded to the inner tank around the periphery, the upper tank opening hole is fully welded to the lower tank opening hole, and the other parts of the expansion plate are matrix spot welded to the inner tank by a spot welding machine; An external expansion machine is connected to the refrigerant feed interface and the refrigerant discharge interface to expand the expansion plate so that an expansion space is formed at the unwelded area between the expansion plate and the tank plate; after the expansion is completed, the expansion machine is removed; Weld and install the tank mouth at the lower tank mouth hole and the upper tank mouth hole; Remove the expansion machine and connect external refrigeration equipment at the refrigerant feed interface and refrigerant discharge interface; A heat-insulating layer and an outer skin are arranged on the outer surface of the expansion plate to form the tank body.

3. A can body forming method according to claim 2, characterized in that: The area of ​​the expansion plate is smaller than the area of ​​the tank body plate.

4. A can body forming method according to claim 2, characterized in that: The thickness of the tank body plate is 4-5 mm, and the thickness of the expansion plate is 1-3 mm.

5. A can body forming method according to claim 2, characterized in that: The diameter of the upper tank mouth hole is greater than the diameter of the lower tank mouth hole.

6. A milk tanker, characterized in that: It comprises a chassis and a tank body arranged on the chassis, and the tank body is the tank body according to any one of claims 1 to 5.

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