Milk tank vehicle, tank and method of forming a tank

Abstract

The application discloses a milk tank truck, a tank body and a forming method of the tank body, which comprises an inner tank and an expansion plate, the expansion plate is welded on the outer surface of the inner tank through pressure welding points, an expansion space is formed between the expansion plate and the outer surface of the inner tank, the top of the expansion plate is provided with a refrigerant feeding interface, the bottom of the expansion plate is provided with a refrigerant discharging interface, 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 interface and the refrigerant discharging interface are externally connected with refrigeration equipment. The outer wall of the inner tank and the expansion plate form the expansion space after expansion, the area through which the refrigerant flows is larger during refrigeration, the refrigeration effect is faster and better, and the long-distance transportation of fresh milk at low temperature is facilitated.

Description

Technical Field

[0001] This invention relates to the field of special vehicle technology, specifically to a milk tanker truck, a tank body, and a method for molding the tank body. Background Technology

[0002] Currently, fresh milk requires low-temperature transportation over long distances to prevent spoilage. Existing milk tankers generally employ two methods for refrigeration and insulation: one involves installing coils inside the tank, connected to external refrigeration equipment. This internal structure makes cleaning extremely difficult and inefficient. The other method uses coils on the outer surface of the tank. However, due to the limited contact area between the coils and the tank, the refrigeration effect is less than ideal, often resulting in a temperature difference between the front and rear of the tank, which is detrimental to long-distance transportation of fresh milk. Furthermore, the relatively long length of the coils makes them prone to loosening after prolonged use, leading to refrigerant leaks at the connections and affecting refrigeration efficiency. In severe cases, this can even contaminate the fresh milk inside the tank. Summary of the Invention

[0003] The present invention aims to address the aforementioned shortcomings by providing a tank body comprising an inner tank and an expansion plate. The expansion plate is welded to the outer surface of the inner tank via pressure welding points, forming an expansion space between the expansion plate and the outer surface of the inner tank. A refrigerant inlet is provided at the top of the expansion plate, and a refrigerant outlet is provided at the bottom of the expansion plate. An insulation layer is provided on the outer surface of the expansion plate, and an outer skin is provided on the outer surface of the insulation layer. The inner tank has a tank opening, and refrigeration equipment is externally connected to the refrigerant inlet and refrigerant outlet.

[0004] The present invention also provides a method for forming a tank as described above, comprising the following steps: The material feeding tank plate is fitted with a lower tank opening. Cut out the expansion plate and cut out the upper tank opening, feed hole and discharge hole on the expansion plate; Lay the expansion plate flat on the tank plate, and partially weld the two sides of the expansion plate to the tank plate so that the center of the upper tank opening and the center of the lower tank opening coincide. The tank body plate and the expansion plate are rolled into a circle as a whole. Then the circular tank body plate and the circular expansion plate are separated. The circular tank body plate is made into an inner tank. The refrigerant inlet and refrigerant outlet are welded at the inlet and outlet 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 its perimeter. The upper tank opening and the lower tank opening are fully welded together. The other parts of the expansion plate are matrix-spot welded to the inner tank using a spot welding machine. An expansion machine is connected to the refrigerant inlet and refrigerant outlet to expand the expansion plate, so that an expansion space is formed between the expansion plate and the unwelded part of the tank plate; after the expansion is completed, the expansion machine is removed. The tank opening is welded and installed at the upper and lower tank openings; External refrigeration equipment is connected at the refrigerant inlet and refrigerant outlet. An insulation layer and an outer skin are provided 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 4-5mm, and the thickness of the expansion plate is 1-3mm.

[0007] Furthermore, the diameter of the upper can opening is larger than the diameter of the lower can opening.

[0008] The present invention also provides a milk tanker truck, including a chassis and a tank disposed on the chassis, wherein the tank is any of the tanks described above.

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

[0010] There is no longer a need to install coils inside or on the outer wall of the tank, making the structure simpler and significantly reducing production costs.

[0011] The addition of expansion plates to the outside of the inner tank increases its strength and improves its durability. At the same time, the elimination of the coil structure allows the refrigerant to flow between the expansion plates and the outer wall of the inner tank, which improves the cooling effect and effectively prevents refrigerant leakage. Attached Figure Description

[0012] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a schematic diagram of the structure of the present invention.

[0013] Figure 2 This is a schematic diagram of the structure for partial positioning welding of the expansion plate and the tank plate.

[0014] Figure 3 This is a schematic diagram of the overall rolled-up structure of the tank body plate and the expansion plate.

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

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

[0017] In the diagram: 1. Tank opening; 2. Refrigerant inlet; 3. Welded joint; 4. Expansion plate; 5. Inner tank; 6. Insulation layer; 7. Outer skin; 8. Refrigerant outlet; 9. Tank body plate; 10. Exit hole; 11. Inlet hole; 12. Upper tank opening hole; 13. Lower tank opening hole. Detailed Implementation

[0018] The following drawings will disclose several embodiments of the present invention. For clarity, many physical details will be described in the following description. However, it should be understood that these physical details are not intended to limit the invention. That is, in some embodiments of the invention, these physical details are not essential. Furthermore, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0019] Furthermore, in this invention, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the invention. They are merely used to distinguish components or operations described using the same technical terms, and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If a combination of technical solutions is contradictory or impossible to implement, such a combination should be considered nonexistent and not within the scope of protection claimed by this invention.

[0020] like Figure 1 As shown, a tank body comprises an inner tank 5 and an expansion plate 4. The expansion plate 4 is welded to the outer surface of the inner tank 5 by pressure welding points 3, forming an expansion space between the expansion plate 4 and the outer surface of the inner tank 5. A refrigerant inlet 2 is provided at the top of the expansion plate 4, and a refrigerant outlet 8 is provided at the bottom of the expansion plate 4. An insulation layer 6 is provided on the outer surface of the expansion plate 4, and an outer skin 7 is provided on the outer surface of the insulation layer 6. A tank opening 1 is provided on the inner tank 5, and refrigeration equipment is externally connected to the refrigerant inlet 2 and the refrigerant outlet 8.

[0021] The present invention also provides a method for forming a can body as described above, comprising the following steps: The material feeding tank plate 9 is provided, and the lower tank opening hole 14 is opened on the tank plate; The blanking plate 10 is used to cut the upper can opening 13, the feed hole 12 and the discharge hole 11. like Figure 2 As shown, the expansion plate 10 is laid flat on the tank plate 9, and the two sides of the expansion plate 10 are partially positioned and welded to the tank plate so that the center of the upper tank opening 13 coincides with the center of the lower tank opening 14. like Figure 3 As shown, the tank plate 9 and the expansion plate 10 are rolled into a circle as a whole, and then the circular tank plate is separated from the circular expansion plate. The circular tank plate is made into an inner tank, and the refrigerant inlet 2 and refrigerant outlet 8 are welded at the inlet hole 12 and outlet 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 its perimeter. The upper tank opening 13 and the lower tank opening 14 are fully welded together. The other parts of the expansion plate 10 are matrix-spot welded to the inner tank using a spot welding machine. like Figure 4 As shown, an expansion machine is connected to the refrigerant inlet 2 and the refrigerant outlet 8 to expand the expansion plate 10, so that the expansion plate 10 and the unwelded part of the tank plate 9 form an expansion space; after the expansion is completed, the expansion machine is removed. Weld and install the can opening 1 at the upper can opening hole 13 and the lower can opening hole 14; Remove the expansion machine and connect external refrigeration equipment at refrigerant inlet 2 and refrigerant outlet 8; An insulation layer and an outer skin are provided on the outer surface of the expansion plate to form the tank body.

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

[0023] To make the expansion plate bulge more easily during expansion while preventing the inner tank from deforming, the thickness of the tank body plate is 4-5mm, and the thickness of the expansion plate is 1-3mm.

[0024] To facilitate the installation of the can opening, the diameter of the upper can opening hole 13 is larger than the diameter of the lower can opening hole 14.

[0025] The present invention also provides a milk tanker truck, including a chassis and a tank disposed on the chassis, wherein the tank is any of the tanks 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 refrigerant flows through a larger area, resulting in faster and better refrigeration, which is beneficial for the low-temperature long-distance transportation of fresh milk.

[0027] The above description is merely an embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A method for forming a tank, characterized in that, The tank body includes an inner tank (5) and an expansion plate (4). The expansion plate (4) is welded to the outer surface of the inner tank (5) by pressure welding points (3). An expansion space is formed between the expansion plate (4) and the outer surface of the inner tank (5). A refrigerant inlet (2) is provided at the top of the expansion plate (4), and a refrigerant outlet (8) is provided at the bottom of the expansion plate (4). An insulation layer (6) is provided on the outer surface of the expansion plate (4), and an outer skin (7) is provided on the outer surface of the insulation layer (6). A tank opening (1) is provided on the inner tank (5). Refrigeration equipment is connected to the refrigerant inlet (2) and the refrigerant outlet (8). The tank forming method includes the following steps: The material feeding tank plate is fitted with a lower tank opening. Cut out the expansion plate and cut out the upper tank opening, feed hole and discharge hole on the expansion plate; Lay the expansion plate flat on the tank plate, and partially weld the two sides of the expansion plate to the tank plate so that the center of the upper tank opening and the center of the lower tank opening coincide. The tank body plate and the expansion plate are rolled into a circle as a whole. Then the circular tank body plate and the circular expansion plate are separated. The circular tank body plate is made into an inner tank. The refrigerant inlet and refrigerant outlet are welded at the inlet and outlet 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 its perimeter. The upper tank opening and the lower tank opening are fully welded together. The other parts of the expansion plate are matrix-spot welded to the inner tank using a spot welding machine. An expansion machine is connected to the refrigerant inlet and refrigerant outlet to expand the expansion plate, so that an expansion space is formed between the expansion plate and the unwelded part of the tank plate; after the expansion is completed, the expansion machine is removed. The can opening is welded and installed at the lower can opening and the upper can opening; Remove the expansion machine and connect external refrigeration equipment at the refrigerant inlet and refrigerant outlet. An insulation layer and an outer skin are provided on the outer surface of the expansion plate to form the tank body.

2. The method for forming a tank according to claim 1, characterized in that, The area of ​​the expansion plate is smaller than the area of ​​the tank body plate.

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

4. The method for forming a tank according to claim 1, characterized in that, The diameter of the upper can opening is larger than the diameter of the lower can opening.

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