Double-layer water tank with heat preservation function

Abstract

The invention discloses a double-layer water tank with a heat preservation function, belongs to the technical field of mechanical design, and aims to improve the overall structural strength of the water tank and enable the water tank to have the heat preservation function. Comprising a box body, an insulating layer and a sealing plate, the box body comprises a box body main body and an end cover; the end cover is arranged at the opening end of the box body, and the end cover and the box body define a sealed container structure. Comprising corner fixing columns, an inner-layer box cover and corner connecting pieces, the end cover comprises four sets of corner fixing columns and the corner connecting pieces, the four sets of corner fixing columns define a square frame structure, and the ends of every two adjacent sets of corner stand columns are connected through the corner connecting pieces; the opening end of the box body main body is inserted into the groove body of the inner-layer box cover, and the inner-layer box cover is connected with the box body main body through welding; the end of the sealing plate is connected with the outer arc plates of the corner fixing columns of the end cover, the end of the sealing plate is connected with the outer arc plates of the four sets of corner fixing columns located on the same side face, and heat preservation layers are arranged between the sealing plate and the box body and between the sealing plate and the inner-layer box cover of the end cover.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical design, and particularly relates to a double-layer water tank with heat preservation function. Background Art

[0002] With the rapid rise of the mechanical manufacturing industry and the booming development of the entire industry, the demand for mechanical equipment is increasing day by day, which has promoted the rapid development of water tanks for mechanical equipment. And the stable water supply of the water tank is crucial for the smooth operation of mechanical equipment.

[0003] In the existing technical solutions, water tanks are mostly made of steel through welding. The materials have a large density and the products are heavy in quality. The structures are mostly single-layer structures, and the overall structural strength is low. During use, they are prone to deformation and even leakage points, resulting in the loss of the sealing performance of the water tank and seriously shortening the service life of the water tank. Moreover, most water tanks in the existing technology have no heat preservation function and cannot adapt to the working environment at low temperatures, which seriously damages mechanical equipment, increases costs, or there is thermal insulation material installed inside first and then steel plates are welded, which is easy to ignite the thermal insulation material. Summary of the Invention

[0004] In view of this, the present invention discloses a double-layer water tank with heat preservation function, and the specific scheme is as follows:

[0005] A double-layer water tank with heat preservation function, comprising a box body, a heat preservation layer, and a sealing plate;

[0006] The box body includes a box body main body and end covers. The box body main body is a hollow cylindrical structure with a square cross-section, and there are openings at both ends;

[0007] There are two groups of end covers, which are respectively arranged at the two open ends of the box body main body. The end covers include corner fixing columns, inner layer box covers, and corner connectors. The end covers and the box body enclose a sealed container; each group of end covers includes four groups of corner fixing columns and corner connectors. The four groups of corner fixing columns enclose a square frame structure, and the ends of adjacent two groups of corner columns are connected by corner connectors; the corner fixing columns include inner arc plates, outer arc plates, and reinforcing ribs. The inner arc plates are arranged on the inner sides of the outer arc plates, and reinforcing ribs are connected between the inner arc plates and the outer arc plates;

[0008] The inner layer box cover is a square groove structure with one end open. The connection positions of the adjacent two side surfaces of the inner layer box cover are rounded structures. The square frame enclosed by the four groups of corner fixing columns is located on the side of the inner layer box cover away from its open end, and the rounded structures at the connection positions of the two adjacent side surfaces of the inner layer box cover are in contact with and welded to the inner arc plates of the corner fixing columns;

[0009] The open end of the box body main body is inserted into the groove body of the inner layer box cover, and the inner layer box cover and the box body main body are connected by welding;

[0010] The sealing plate is a square plate structure, which is arranged on the outer side of the box body. There are six groups of sealing plates. The end of the sealing plate is connected to the outer arc plates of four groups of corner fixing columns located on the same side. There is a heat preservation layer between the sealing plate and the box body main body, and between the sealing plate and the inner box cover of the end cover.

[0011] As a supplement to the technical solution of the present invention, a concave platform is provided at the end of the outer arc plate of the corner fixing column in the length direction, and the end of the sealing plate is riveted to the concave platform position of the outer arc plate.

[0012] As a supplement to the technical solution of the present invention, the heat preservation layer includes a support frame and heat preservation materials. The support frame is a grid-like structure, and the heat preservation materials are filled in the grids of the support frame.

[0013] As a supplement to the technical solution of the present invention, the side surface of the box body main body and the inner box cover of the end cover are welded to the support frame, and the sealing plate is connected to the support frame by rivets.

[0014] As a supplement to the technical solution of the present invention, a buffer plate is further included. The buffer plate is arranged in the box body main body, and through holes are provided on the surface of the buffer plate.

[0015] As a supplement to the technical solution of the present invention, the buffer plate includes a first transverse buffer plate, a second transverse buffer plate, a first longitudinal buffer plate, and a second longitudinal buffer plate;

[0016] The first transverse buffer plate and the second transverse buffer plate are arranged relatively parallel and are arranged at the middle position in the box body. The outer edges of the first transverse buffer plate and the second transverse buffer plate are welded to the box body. The flow guiding through holes opened on the first transverse buffer plate and the second transverse buffer plate are arranged staggeredly, so that the flow guiding through holes opened on the two buffer plates are not in the same longitudinal direction.

[0017] As a supplement to the technical solution of the present invention, the first longitudinal buffer plate is arranged between the first transverse buffer plate and one group of end covers, and the first longitudinal buffer plate is arranged relatively perpendicular to the first transverse buffer plate. The side edges of the first longitudinal buffer plate are welded to the first transverse buffer plate, the upper side wall of the box body, the lower side wall of the box body, and the inner box cover of the end cover respectively;

[0018] The second longitudinal buffer plate is arranged between the second transverse buffer plate and the other group of end covers, and the second longitudinal buffer plate is arranged relatively perpendicular to the second transverse buffer plate; the side edges of the second longitudinal buffer plate are welded to the second transverse buffer plate, the upper side wall of the box body, the lower side wall of the box body, and the inner box cover of the end cover respectively.

[0019] As a supplement to the technical solution of the present invention, the connection position of the first longitudinal buffer plate and the first transverse buffer plate is located at the middle position of the first transverse buffer plate, the connection position of the second longitudinal buffer plate and the second transverse buffer plate is located at the middle position of the second transverse buffer plate, and the first longitudinal buffer plate and the second longitudinal buffer plate are both provided with flow guide through holes;

[0020] The position of the flow guide through hole on the first transverse buffer plate is located at the left part of the first longitudinal buffer plate, and the position of the flow guide through hole opened on the second transverse buffer plate is located at the right part of the second longitudinal buffer plate.

[0021] As a supplement to the technical solution of the present invention, vertical slot holes are provided on the inner layer box covers of the two groups of end covers. The side edges of the first longitudinal buffer plate and the second longitudinal buffer plate connected to the inner layer box cover are both located in the vertical slot holes on the inner layer box cover, and the buffer plates located in the vertical slot holes are welded to the inner layer box cover.

[0022] As a supplement to the technical solution of the present invention, the corner joint is of an arc structure. A corner joint convex plate is provided on the side edge of the corner joint. The corner joint convex plate is located outside the outer arc plate of the corner fixing column, and the corner joint convex plate is riveted to the outer arc plate.

[0023] Beneficial effects: The water tank disclosed in the present invention is of a double-layer structure, which can improve the overall strength, reduce the deformation amount, and ensure the sealing performance. In another aspect of the present invention, through the setting of the heat insulation material, it can work in a low-temperature environment and ensure the normal operation of mechanical equipment. In addition, the buffer plates inside the water tank are set in a fully connected and fixed manner to prevent the buffer plates from bending and deforming and losing the buffer effect. Description of the Drawings

[0024] Figure 1 It is a three-dimensional structure schematic diagram of the present invention.

[0025] Figure 2 It is an exploded structure schematic diagram of the present invention.

[0026] Figure 3 It is an assembly structure schematic diagram of the box body main body and the end cover of the present invention.

[0027] Figure 4 It is a schematic diagram of the end cover structure of the present invention.

[0028] Figure 5 It is a schematic diagram of the box body main body structure of the present invention.

[0029] Figure 6 It is a cross-sectional structure schematic diagram of the corner fixing column of the present invention.

[0030] Figure 7 It is a schematic diagram of the corner fixing column structure of the present invention.

[0031] Figure 8This is a schematic diagram of the assembly structure of the box body and the support frame of the present invention.

[0032] Figure 9 This is a schematic diagram of the support frame structure of the present invention.

[0033] Figure 10 This is a schematic diagram of the support frame structure of the present invention.

[0034] Figure 11 This is a schematic diagram of the support frame structure of the present invention.

[0035] Figure 12 This is a schematic diagram of the insulation layer structure of the present invention.

[0036] Figure 13 This is a schematic diagram of the angle connector structure of the present invention.

[0037] Figure 14 This is a schematic diagram of the layout structure of the buffer plate in the box body of the present invention.

[0038] Figure 15 This is a schematic diagram of the layout structure of the buffer plate in the box body of the present invention.

[0039] In the figure: 1. Box body, 2. Sealing plate, 3. Box body main body, 4. End cover, 5. Corner fixing column, 6. Inner layer box cover, 7. Angle connector, 8. Inner arc plate, 9. Outer arc plate, 10. Reinforcing rib, 11. Concave platform, 12. Support frame, 13. Insulation material, 14. First transverse buffer plate, 15. Second transverse buffer plate, 16. First longitudinal buffer plate, 17. Second longitudinal buffer plate, 18. Flow guiding through hole, 19. Vertical slot hole, 20. Angle connector convex plate. Detailed implementation manners

[0040] In the description of the present invention, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0041] In the present invention, unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] As shown Figures 1 to 15 in the figure, a double-layer water tank with heat preservation function includes a box body 1, a heat preservation layer, and a sealing plate 2.

[0043] The box body 1 includes a box body main body 3 and end covers 4. The box body main body 3 is a hollow cylinder structure with a square cross-section, which is formed by bending and welding plates.

[0044] There are two groups of the end covers 4, which are respectively arranged at two open ends of the box body main body 3, and include corner fixing columns 5, inner layer box covers 6, and corner connectors 7. The end covers 4 and the box body main body 3 enclose a hollow sealed container to realize the water storage function.

[0045] Each group of the end covers 4 includes four groups of corner fixing columns 5 and corner connectors 7. The four groups of corner fixing columns 5 enclose a square frame structure, and the ends of adjacent two groups of corner columns are connected by the corner connectors 7.

[0046] The corner fixing column 5 includes an inner arc plate 8, an outer arc plate 9, and a reinforcing rib 10. The inner arc plate 8 is arranged inside the outer arc plate 9, and a reinforcing rib 10 is connected between the inner arc plate 8 and the outer arc plate 9.

[0047] As shown Figure 4 in the figure, the inner layer box cover 6 is a square groove body structure with one open end, and the connection positions of adjacent two side surfaces of the inner layer box cover 6 are rounded corner structures.

[0048] The square frame enclosed by the four groups of corner fixing columns 5 is located on the side of the inner layer box cover 6 away from its open end, and the rounded corner structures at the connection positions of two adjacent side surfaces of the inner layer box cover 6 are attached to the inner arc plates 8 of the corner fixing columns 5 and are connected by welding.

[0049] The open end of the box body main body 3 is inserted into the groove body of the inner layer box cover 6, and the inner layer box cover 6 and the box body main body 3 are connected by welding.

[0050] The sealing plate 2 is a square plate structure, which is arranged outside the box body 1. The end of the sealing plate 2 is connected to the outer arc plate 9 of the corner fixing column 5 of the end cover 4. There are six groups of the sealing plates 2, and the ends of the sealing plates 2 are connected to the outer arc plates 9 of the four groups of corner fixing columns 5 on the same side surface. A heat preservation layer is provided between the sealing plate 2 and the box body main body 3, and between the sealing plate 2 and the inner layer box cover 6 of the end cover 4.

[0051] Through the above settings, the structural design of the double-layer water tank is realized, the overall mechanical strength of the water tank is improved, the deformation amount is reduced, and its service life is prolonged. By adding a heat preservation layer to the double-layer water tank, the heat preservation function of the water tank is realized, and it can be adapted to work in a low-temperature environment to ensure the normal operation of mechanical equipment.

[0052] As a preferred technical solution of the present invention, as shown Figure 6 、 Figure 7As shown, a concave platform 11 is provided at the end of the outer arc plate 9 of the angle fixing column 5 in the length direction. The concave platform 11 is a concave structure facing the inner arc plate 8, so that the outer arc plate 9 forms a stepped shape at the position of the concave platform 11. The end of the sealing plate 2 is riveted to the position of the concave platform 11 of the outer arc plate 9, so that the outer surface of the sealing plate 2 is flush with the outer surface of the outer arc plate 9, improving the aesthetic degree and at the same time enhancing the connection strength between the sealing plate 2 and the outer arc plate 9.

[0053] As a preferred technical solution of the present invention, it further includes a water inlet pipe and a water outlet pipe. The water inlet pipe passes through the sealing plate 2 on one group of end covers 4 and the inner layer box cover 6 to communicate with the inside of the box body 1, and the water outlet pipe passes through the sealing plate 2 on the other group of end covers 4 and the inner layer box cover 6 to communicate with the inside of the box body 1.

[0054] As a preferred technical solution of the present invention, the heat insulation layer includes a support frame 12 and heat insulation materials 13. The support frame 12 is a grid-like structure, and the heat insulation materials 13 are filled in the grids of the support frame 12. The heat insulation frame is composed of square pipes arranged horizontally and vertically.

[0055] As a supplement to the above technical solution, as Figures 9 to 11 shown, there are three types of the support frames 12, namely the first support frame 12, the second support frame 12, and the third support frame 12. There are two groups of the first support frame 12, the second support frame 12, and the third support frame 12. The same two groups of support frames 12 are oppositely arranged on both sides of the box body 1. The support frame 12 designs the number of cross beams and longitudinal beams that make it up according to different bearing loads and usage requirements. Round holes are provided on the first support frame 12 for the water inlet pipe / water outlet pipe to pass through, improving the structural strength at the connection position between the water inlet pipe / water outlet pipe and the box body 1.

[0056] Correspondingly, the heat insulation materials 13 are adaptively adjusted and changed according to the different structures of the support frame 12.

[0057] As a preferred technical solution of the present invention, the side surface of the box body main body 3 and the inner layer box cover 6 of the end cover 4 are connected to the support frame 12.

[0058] As a supplement to the above technical solution, the side surface of the box body main body 3 and the inner layer box cover 6 of the end cover 4 are connected to the support frame 12 by welding. The sealing plate 2 and the support frame 12 are connected by rivets.

[0059] As a supplement to the above technical solution, the end of the support frame 12 is connected to the angle fixing column by welding.

[0060] Through the above settings, the box body main body 3, the inner layer box cover 6, and the sealing plate 2 are all connected to the support frame 12, strengthening the overall structural stability.

[0061] As a preferred technical solution of the present invention, asFigure 14 , Figure 15 As shown in Figure 15 , it further includes a buffer plate, which is arranged inside the box body 3. Through holes are provided on the surface of the buffer plate for buffering the impact of water on the box body 1.

[0062] Preferably, the buffer plate includes a first transverse buffer plate 14, a second transverse buffer plate 15, a first longitudinal buffer plate 16, and a second longitudinal buffer plate 17.

[0063] The first transverse buffer plate 14 and the second transverse buffer plate 15 are arranged relatively parallel to each other and are located in the middle of the box body 1 of the box body, and their outer edges are welded to the box body 1 of the box body. The sides of the two groups of transverse buffer plates are welded to the side walls of the box body 1 of the box body, and the upper and lower sides are respectively welded to the upper side wall and the lower side wall of the box body 1 of the box body, so that the two groups of transverse buffer plates divide the box body 1 of the box body into three parts.

[0064] Preferably, flow guide through holes 18 are provided on the surfaces of the first transverse buffer plate 14 and the second transverse buffer plate 15. The flow guide through holes 18 provided on the first transverse buffer plate 14 and the second transverse buffer plate 15 are arranged staggeredly, so that the flow guide through holes 18 provided on the two buffer plates are not in the same longitudinal direction, further improving the buffering effect.

[0065] The first longitudinal buffer plate 16 is arranged between the first transverse buffer plate 14 and one group of end covers 4, and the first longitudinal buffer plate 16 is arranged relatively perpendicular to the first transverse buffer plate 14. The sides of the first longitudinal buffer plate 16 are respectively welded to the first transverse buffer plate 14, the upper side wall of the box body 1 of the box body, the lower side wall of the box body 1 of the box body, and the inner box cover 6 of the end cover 4.

[0066] The second longitudinal buffer plate 17 is arranged between the second transverse buffer plate 15 and the other group of end covers 4, and the second longitudinal buffer plate 17 is arranged relatively perpendicular to the second transverse buffer plate 15. The sides of the second longitudinal buffer plate 17 are respectively welded to the second transverse buffer plate, the upper side wall of the box body 1 of the box body, the lower side wall of the box body 1 of the box body, and the inner box cover 6 of the end cover 4.

[0067] Preferably, the connection position between the first longitudinal buffer plate 16 and the first transverse buffer plate 14 is located at the middle position of the first transverse buffer plate 14, and the connection position between the second longitudinal buffer plate 17 and the second transverse buffer plate 15 is located at the middle position of the second transverse buffer plate 15.

[0068] Flow guide through holes 18 are provided on both the first longitudinal buffer plate 16 and the second longitudinal buffer plate 17.

[0069] As a preferred technical solution of the present invention, the position of the water guiding through hole 18 on the first transverse buffer plate 14 is located at the left part of the first longitudinal buffer plate 16, and the position of the water guiding through hole 18 formed on the second transverse buffer plate 15 is located at the right part of the second longitudinal buffer plate 17. Through the above structural arrangement, the flowing distance of water inside the box body 1 is extended, and the buffering effect is improved.

[0070] Preferably, the size of the water guiding through holes 18 on the first transverse buffer plate 14 and the second transverse buffer plate 15 is larger than that of the water guiding through holes 18 on the first longitudinal buffer plate 16 and the second longitudinal buffer plate 17. The hole density of the water guiding through holes 18 formed on the first transverse buffer plate 14 and the second transverse buffer plate 15 is greater than that of the water guiding through holes 18 formed on the first longitudinal buffer plate 16 and the second longitudinal buffer plate 17.

[0071] As a preferred technical solution of the present invention, as Figure 4 、 Figure 14 shown, vertical slot holes 19 are provided on the inner box cover 6 of the end cover 4. The positions of the slot holes on the two groups of end covers 4 correspond to the first longitudinal buffer plate 16 and the second longitudinal buffer plate 17 respectively. For example, the position of the slot hole formed on the inner box cover 6 connected to the first longitudinal buffer plate 16 corresponds to the first longitudinal buffer plate 16, and the position of the slot hole formed on the inner box cover 6 connected to the second longitudinal buffer plate 17 corresponds to the second longitudinal buffer plate 17. The side edges of the first longitudinal buffer plate 16 and the second longitudinal buffer plate 17 connected to the inner box cover 6 are both located within the slot holes on the inner box cover 6, and the first longitudinal buffer plate 16, the second longitudinal buffer plate 17 and the inner box cover 6 are hermetically connected by welding.

[0072] During actual installation, each buffer plate needs to be first installed and welded inside the box body 1 of the box body 1, and then the end cover 4 is assembled with the box body 1 of the box body 1. The conventional method cannot fixedly connect the side edges of the first longitudinal buffer plate 16 and the second longitudinal buffer plate 17 to the end cover 4, resulting in unstable structures of the first longitudinal buffer plate 16 and the second longitudinal buffer plate 17 during service. Through the arrangement of the vertical slot holes 19, the fixed and sealed connection between the first longitudinal buffer plate 16, the second longitudinal buffer plate 17 and the end cover 4 is realized, greatly improving the overall structural strength.

[0073] As a preferred technical solution of the present invention, the angle connector 7 is of an arc-shaped structure, and an angle connector convex plate 20 is provided on the side edge of the angle connector 7. When the angle connector 7 is connected to the angle fixing column 5, the angle connector convex plate 20 is located outside the outer arc plate 9 of the angle fixing column 5, and the angle connector convex plate 20 is riveted to the outer arc plate 9, which is convenient for connecting the angle connector 7 and the angle fixing column 5 and improves the connection strength between the two at the same time.

[0074] As a preferred technical solution of the present invention, all components of the overall water tank are made of aluminum alloy material. Compared with traditional steel water tanks, it can reduce the weight of the water tank, reduce the pressure on the equipment frame structure at the water tank position of the device, reduce fuel costs, and through special surface treatment, further improve the corrosion resistance, extend the service life of the water tank, and reduce costs.

[0075] The above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A double-layer water tank with heat preservation function, characterized in that: It comprises a box body (1), a heat-insulating layer, and a sealing plate (2); The box body (1) comprises a box body main body (3) and an end cover (4); the box body main body (3) is a hollow cylindrical structure with a square cross section and openings at both ends; The end covers (4) are provided in two groups and are respectively arranged at the two open ends of the box body (3), and include corner fixing columns (5), an inner box cover (6), and a corner connector (7). The end covers (4) and the box body (1) are enclosed to form a sealed container; each group of the end covers (4) includes four groups of corner fixing columns (5) and corner connectors (7), and the four groups of corner fixing columns (5) are enclosed to form a square frame structure, and the ends of two adjacent groups of corner columns are connected by the corner connectors (7); the corner fixing columns (5) include an inner arc plate (8), an outer arc plate (9), and a reinforcing rib (10), wherein the inner arc plate (8) is arranged on the inner side of the outer arc plate (9), and a reinforcing rib (10) is connected between the inner arc plate (8) and the outer arc plate (9); The inner box cover (6) is a square trough structure with one end open, and the adjacent two side surfaces of the inner box cover (6) are connected at a rounded corner structure, and the square frame surrounded by four groups of corner fixing columns (5) is located on the side of the inner box cover (6) away from the open end thereof, and the rounded corner structure at the connection position of the two adjacent side surfaces of the inner box cover (6) is attached to the inner arc plate (8) of the corner fixing column (5) and connected by welding; The open end of the box body (3) is inserted into the groove of the inner box cover (6), and the inner box cover (6) and the box body (3) are connected by welding; The sealing plate (2) is a square plate-shaped structure, which is arranged on the outer side of the box body (1). Six groups of sealing plates (2) are provided. The ends of the sealing plates (2) are connected to the outer arc plates (9) of four groups of corner fixing columns (5) located on the same side. A heat-insulating layer is provided between the sealing plate (2) and the box body (3), and between the sealing plate (2) and the inner box cover (6) of the end cover (4).

2. A double-layer water tank with heat preservation function according to claim 1, characterized in that: The end of the outer arc plate (9) of the corner fixing column (5) in the length direction is provided with a concave platform (11), and the end of the sealing plate (2) is riveted to the concave platform (11) of the outer arc plate (9).

3. A double-layer water tank with heat preservation function according to claim 1, characterized in that: The thermal insulation layer comprises a support frame (12) and a thermal insulation material (13); the support frame (12) is a grid-like structure, and the thermal insulation material (13) is filled in the grid of the support frame (12).

4. A double-layer water tank with heat preservation function according to claim 3, characterized in that: The side surface of the box body (3) and the inner box cover (6) of the end cover (4) are connected to the support frame (12) by welding, and the sealing plate (2) and the support frame (12) are connected by rivets.

5. The double-layer water tank with heat preservation function according to claim 1, characterized in that: It also comprises a buffer plate, which is arranged in the box body (3) and has through holes on its surface.

6. A double-layer water tank with heat preservation function according to claim 5, characterized in that: The buffer plate comprises a first transverse buffer plate (14), a second transverse buffer plate (15), a first longitudinal buffer plate (16), and a second longitudinal buffer plate (17); The first transverse buffer plate (14) and the second transverse buffer plate (15) are arranged in parallel with each other and are arranged in the middle of the box body (1), and the outer edges of the first transverse buffer plate (14) and the second transverse buffer plate (15) are welded to the box body (1), and the flow guide holes (18) provided on the first transverse buffer plate (14) and the second transverse buffer plate (15) are arranged in a staggered manner so that the flow guide holes (18) provided on the two buffer plates are not located in the same longitudinal direction.

7. A double-layer water tank with heat preservation function according to claim 6, characterized in that: The first longitudinal buffer plate (16) is arranged between the first transverse buffer plate (14) and one of the end covers (4), and the first longitudinal buffer plate (16) and the first transverse buffer plate (14) are arranged vertically relative to each other, and the side edges of the first longitudinal buffer plate (16) are respectively welded to the first transverse buffer plate (14), the upper side wall of the box body (1), the lower side wall of the box body (1), and the inner box cover (6) of the end cover (4); The second longitudinal buffer plate (17) is arranged between the second transverse buffer plate (15) and another group of end covers (4), and the second longitudinal buffer plate (17) and the second transverse buffer plate (15) are arranged vertically relative to each other; the side edges of the second longitudinal buffer plate (17) are respectively welded to the second transverse buffer plate, the upper side wall of the box body (1), the lower side wall of the box body (1), and the inner box cover (6) of the end cover (4).

8. The double-layer water tank with heat preservation function according to claim 7, characterized in that: The connection position between the first longitudinal buffer plate (16) and the first transverse buffer plate (14) is located at the middle of the first transverse buffer plate (14), the connection position between the second longitudinal buffer plate (17) and the second transverse buffer plate (15) is located at the middle of the second transverse buffer plate (15), and the first longitudinal buffer plate (16) and the second longitudinal buffer plate (17) are both provided with flow guide holes (18); The flow-conducting hole (18) on the first transverse buffer plate (14) is located on the left side of the first longitudinal buffer plate (16), and the flow-conducting hole (18) on the second transverse buffer plate (15) is located on the right side of the second longitudinal buffer plate (17).

9. A double-layer water tank with heat preservation function according to claim 8, characterized in that: The inner case cover (6) of the two groups of end covers (4) are provided with a vertical slot hole (19); the sides of the first longitudinal buffer plate (16) and the second longitudinal buffer plate (17) connected to the inner case cover (6) are both located in the vertical slot hole (19) on the inner case cover (6); and the buffer plate located in the vertical slot hole (19) is welded to the inner case cover (6).

10. The double-layer water tank with heat preservation function according to claim 8, characterized in that: The corner connector (7) is an arc-shaped structure. A corner connector protruding plate (20) is provided on the side of the corner connector (7). The corner connector protruding plate (20) is located outside the outer arc plate (9) of the corner fixing column (5), and the corner connector protruding plate (20) is riveted to the outer arc plate (9).

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