Polyurethane foam plastic flame retardant cooling device

Abstract

The utility model discloses a polyurethane foam plastic flame retardant cooling device, and relates to the technical related field of polyurethane foam plastic processing equipment. The cooling device structurally comprises a bottom plate, an anti-skid rubber pad fixedly arranged at the bottom of the bottom plate, a cooling water tank fixedly arranged on the right side of the top of the bottom plate, a water outlet electric valve fixedly arranged below the right end face of the cooling water tank, and fin type cooling pipes. Hot air in the cooling tank is guided into the fin type cooling pipe through the air pipe and exchanges with cooling water in the cooling water tank to cool the hot air in the fin type cooling pipe, and then the hot air is automatically exhausted through the fin type cooling pipe to prevent the hot air generated by the device from being directly exhausted and hurting workers around the device; and meanwhile, a rotary cooling box is arranged, and a first gear, a second gear and a planetary gear are used for driving the rotary cooling box to be opposite to the rotation direction of the polyurethane foam plastic flame retardant, so that the efficiency of air injection cooling of the polyurethane foam plastic flame retardant is higher.

Description

Technical Field

[0001] The utility model relates to the technical field related to polyurethane foam plastic processing equipment, in particular to a polyurethane foam plastic flame retardant cooling device. Background Art

[0002] The processing steps of polyurethane foam plastics generally include plastic ingredients, molding, machining, joining and modification. Polyurethane foam plastics generally have a high temperature after molding and need to be cooled in time to ensure the smoothness of the product.

[0003] Prior art publication number CN210590193U discloses a cooling device for processing polyurethane foam plastics, including a base and a support plate, the support plate is installed directly above the base, two symmetrically arranged springs are connected between the base and the support plate, a horizontally arranged rubber plate is fixed to the bottom wall of the base by screws, a shock-absorbing box without a bottom wall is welded to the top wall of the base, a horizontally arranged shock-absorbing plate is movably sleeved on the inner side wall of the shock-absorbing box, and a plurality of movable holes are equidistantly provided on the top wall of the shock-absorbing box.

[0004] The above-mentioned prior art has certain advantages in cooling, but still has certain shortcomings. The above-mentioned prior art uses an air pump to blow air to cool the polyurethane foam plastic, but the above-mentioned prior art does not process the hot air generated by the heat exchange with the polyurethane foam plastic after blowing. If the hot air is discharged directly, it may cause burns to the staff around the equipment. Utility Model Content

[0005] Therefore, in order to solve the above-mentioned shortcomings, the utility model provides a polyurethane foam plastic flame retardant cooling device.

[0006] The utility model is implemented by constructing a polyurethane foam flame retardant cooling device, which includes a bottom plate, a non-slip rubber pad fixedly arranged at the bottom of the bottom plate, a cooling water tank fixedly arranged at the right side of the top of the bottom plate, and a water outlet electric valve fixedly arranged below the right end surface of the cooling water tank;

[0007] Also includes:

[0008] A water inlet is provided on the right side of the top of the cooling water tank;

[0009] A cooling box is fixedly arranged at the middle end of the top of the bottom plate;

[0010] A box door, the front end surface of the cooling box is hinged with a box door;

[0011] A controller, wherein the left end surface of the cooling box is fixedly provided with a controller;

[0012] An air pump is fixedly arranged on the top of the cooling box;

[0013] An air outlet pipe, wherein the air outlet below the right end surface of the cooling box is fixedly connected to the left end of the air outlet pipe, and the air inlet on the left side of the top of the cooling box is fixedly connected to the right end of the air outlet pipe;

[0014] A fin-type cooling pipe is fixedly arranged on the top of the cooling water tank, and the air inlet on the left side of the top of the cooling water tank is fixedly connected to the left end of the fin-type cooling pipe, and the air outlet on the right side of the top of the cooling water tank is fixedly connected to the right end of the fin-type cooling pipe.

[0015] Preferably, the cooling box comprises:

[0016] Damper, the bottom of the cooling box is fixedly provided with a damper, and there are two groups of dampers symmetrically arranged at the bottom of the cooling box, and the top of the bottom plate is fixedly connected to the lower end of the damper;

[0017] A buffer rubber pad is fixedly arranged at the bottom edge of the cooling box;

[0018] A motor is fixedly arranged at the middle end of the bottom of the cooling box.

[0019] Preferably, the cooling box further comprises:

[0020] A transmission shaft, wherein the output end of the motor is fixedly connected to the lower end of the transmission shaft;

[0021] A first shaft seat, wherein the first shaft seat is fixedly arranged at the middle end of the bottom of the cooling box, and the upper end of the transmission shaft passes through the first shaft seat;

[0022] A first gear, a first gear is rotatably arranged on the top of the first shaft seat, and an outer surface of the transmission shaft is fixedly connected to an inner surface of the first gear.

[0023] Preferably, the cooling box further comprises:

[0024] A rotating cooling box, wherein a rotating cooling box is rotatably arranged at the bottom of the cooling box;

[0025] A second shaft seat, a second shaft seat is fixedly arranged on the left side of the bottom of the cooling box;

[0026] The second gear, the top of the second shaft seat is rotatably connected with the bottom of the second gear, and the left end of the first gear is meshed with the right end of the second gear.

[0027] Preferably, the cooling box further comprises:

[0028] A first fixed plate, wherein the upper end of the transmission shaft is fixedly connected to the center of the bottom of the first fixed plate;

[0029] Planetary gear, a planetary gear is fixedly arranged below the inner surface of the rotating cooling box, and the left end of the second gear is meshed with the inner end of the planetary gear;

[0030] A first annular chute is provided at the bottom of the cooling box.

[0031] Preferably, the cooling box further comprises:

[0032] A first slider, wherein the first slider is fixedly arranged on the left and right sides of the bottom of the rotary cooling box, and the first slider is slidably arranged in the first annular sliding groove;

[0033] Air inlet ducts are provided on the inner walls of the left and right sides of the rotary cooling box;

[0034] Air outlet holes are provided on the left and right sides of the inner surface of the rotary cooling box, and the air inlet is connected to the air outlet holes.

[0035] Preferably, the cooling box further comprises:

[0036] A second annular slider is provided on the top of the rotary cooling box;

[0037] A second slider, wherein a second slider is slidably disposed inside the second annular slider, and the second slider is symmetrically disposed inside the second annular slider;

[0038] Hydraulic push rod, the bottom of the second annular sliding block is fixedly connected to the upper end of the hydraulic push rod.

[0039] Preferably, the cooling box further comprises:

[0040] A second fixed plate, wherein the lower end of the hydraulic push rod is fixedly connected to the top of the second fixed plate;

[0041] A rotating joint is provided at the top center of the rotating cooling box;

[0042] Inlet pipe, the upper end of the rotating joint is fixedly connected to the lower end of the air inlet pipe, and the air outlet at the bottom of the air pump is fixedly connected to the upper end of the air inlet pipe;

[0043] Through holes are provided on the front and rear sides of the rotary cooling box.

[0044] The utility model has the following advantages: The utility model provides a polyurethane foam plastic flame retardant cooling device through improvement, which has the following improvements compared with the same type of equipment:

[0045] The utility model discloses a polyurethane foam flame retardant cooling device, which is provided with a finned cooling pipe, and uses an air pipe to guide the hot air in a cooling box into the finned cooling pipe to exchange with the cooling water in a cooling water tank, so as to cool down the hot air in the finned cooling pipe and then discharge it automatically through the finned cooling pipe to prevent the hot air generated after the device cools down the polyurethane foam flame retardant from being directly discharged and causing harm to the staff around the device.

[0046] The polyurethane foam flame retardant cooling device of the utility model is provided with a rotating cooling box 67, and utilizes the first gear 66, the second gear 69 and the planetary gear 611 to drive the rotating cooling box 67 in the opposite direction to the rotation direction of the polyurethane foam flame retardant, so that the polyurethane foam flame retardant has a higher efficiency in jet cooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a schematic diagram of the structure of the utility model;

[0048] Figure 2 It is a front view of the utility model;

[0049] Figure 3 The utility model Figure 2 A partial enlarged view of area A in FIG.

[0050] Figure 4 It is a schematic diagram of the through hole structure of the utility model;

[0051] Figure 5 It is a schematic diagram of the structure of the second fixed disk of the utility model.

[0052] Among them: bottom plate-1, anti-skid rubber pad-2, cooling water tank-3, water outlet electric valve-4, water inlet-5, cooling box-6, damper-61, buffer rubber pad-62, motor-63, transmission shaft-64, first shaft seat-65, first gear-66, rotating cooling box-67, second shaft seat-68, second gear-69, first fixed plate-610, planetary gear-611, first annular slide groove-612, first slider-613, air inlet duct-614, air outlet hole-615, second annular slider-616, second slider-617, hydraulic push rod-618, second fixed plate-619, rotating joint-620, air inlet pipe-621, through hole-622, box door-7, controller-8, air pump-9, air outlet pipe-10, finned cooling pipe-11. DETAILED DESCRIPTION

[0053] The following is combined with Figures 1 to 5The principles and features of the present invention are described, and the examples given are only used to explain the present invention, and are not used to limit the scope of the present invention. The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become clearer according to the following description and claims. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0054] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0055] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0056] Embodiment 1:

[0057] See also Figure 1 to Figure 5 The utility model discloses a polyurethane foam flame retardant cooling device, comprising a bottom plate 1, a non-slip rubber pad 2 fixedly arranged at the bottom of the bottom plate 1, a cooling water tank 3 fixedly arranged at the right side of the top of the bottom plate 1, and a water outlet electric valve 4 fixedly arranged below the right end surface of the cooling water tank 3. The non-slip rubber pad 2 can reduce the displacement caused by vibration generated by the device during operation.

[0058] A water inlet 5 is provided on the right side of the top of the cooling water tank 3, a cooling box 6 is fixedly arranged on the middle end of the top of the base plate 1, a box door 7 is hinged on the front end face of the cooling box 6, a controller 8 is fixedly arranged on the left end face of the cooling box 6, the controller 8 is connected to the air pump 9 through the circuit, an air pump 9 is fixedly arranged on the top of the cooling box 6, an air outlet below the right end face of the cooling box 6 is fixedly connected to the left end of the air outlet pipe 10, and the air inlet on the left side of the top of the cooling box 6 is fixedly connected to the right end of the air outlet pipe 10.

[0059] A fin-type cooling tube 11 is fixedly arranged on the top of the cooling water tank 3, and the air inlet on the left side of the top of the cooling water tank 3 is fixedly connected to the left end of the fin-type cooling tube 11, and the air outlet on the right side of the top of the cooling water tank 3 is fixedly connected to the right end of the fin-type cooling tube 11. The fin-type cooling tube 11 can make the contact area between the hot air inside the fin-type cooling tube 11 and the cooling water in the cooling water tank 3 larger, thereby making the cooling speed of the hot air inside the fin-type cooling tube 11 faster.

[0060] The working principle of a polyurethane foam flame retardant cooling device based on Example 1 is:

[0061] First, when using the device, move the device to a designated working area, and then connect the device to an external power source to power on the device, and inject cooling water into the cooling water tank 3 through the water inlet 5 to complete the preparation of the device.

[0062] Second, the polyurethane foam flame retardant that needs to be cooled is placed in the cooling box 6 with the box door 7 opened, and then the controller 8 controls the circuit to drive the air pump 9 to start. The air pump 9 starts to inject air into the cooling box 6 to blow the polyurethane foam flame retardant in the cooling box 6 to cool it down.

[0063] Third, the air in the cooling box 6 contacts with the polyurethane foam flame retardant and undergoes heat exchange to become hot gas, and then the hot gas in the cooling box 6 enters the fin cooling tube 11 of the cooling water tank 3 through the air outlet pipe 10, and the hot gas in the fin cooling tube 11 is exchanged with the cooling water in the cooling water tank 3 to cool the hot gas in the fin cooling tube 11, and then the fin cooling tube 11 discharges the hot gas by itself to prevent the hot gas generated after the polyurethane foam flame retardant is cooled by the device from being directly discharged, which may cause harm to the staff around the device.

[0064] Embodiment 2:

[0065] See also Figure 1 to Figure 5 , a polyurethane foam flame retardant cooling device of the utility model, compared with the first embodiment, this embodiment also includes a cooling box 6, the cooling box 6 includes:

[0066] A damper 61 is fixedly arranged at the bottom of the cooling box 6. The damper 61 can reduce the vibration of the cooling box 6 during operation. There are two groups of dampers 61 symmetrically arranged at the bottom of the cooling box 6. The top of the bottom plate 1 is fixedly connected to the lower end of the damper 61. A buffer rubber pad 62 is fixedly arranged at the bottom edge of the cooling box 6. The buffer rubber pad 62 can prevent the cooling box 6 from moving up and down and forming a hard collision with the bottom plate 1 during vibration during operation. A motor 63 is fixedly arranged at the middle end of the bottom of the cooling box 6.

[0067] The output end of the motor 63 is fixedly connected to the lower end of the transmission shaft 64, a first shaft seat 65 is fixedly provided at the middle end of the bottom of the cooling box 6, and the upper end of the transmission shaft 64 passes through the first shaft seat 65, a first gear 66 is rotatably provided on the top of the first shaft seat 65, and the outer surface of the transmission shaft 64 is fixedly connected to the inner surface of the first gear 66.

[0068] A rotating cooling box 67 is rotatably arranged at the bottom of the cooling box 6, and a second shaft seat 68 is fixedly arranged on the left side of the bottom of the cooling box 6. The top of the second shaft seat 68 is rotatably connected to the bottom of the second gear 69, and the left end of the first gear 66 is meshed with the right end of the second gear 69.

[0069] The upper end of the transmission shaft 64 is fixedly connected to the bottom center of the first fixed disk 610, a planetary gear 611 is fixedly arranged below the inner surface of the rotating cooling box 67, and the left end of the second gear 69 is meshed with the inner end of the planetary gear 611, and a first annular groove 612 is opened at the bottom of the cooling box 6.

[0070] A first slider 613 is fixedly provided on the left and right sides of the bottom of the rotating cooling box 67, and the first slider 613 is slidably provided in the first annular groove 612. An air inlet 614 is opened on the inner walls on the left and right sides of the rotating cooling box 67, and an air outlet 615 is opened on the left and right sides of the inner surface of the rotating cooling box 67, and the air inlet 614 is connected to the air outlet 615.

[0071] A second annular slider 616 is provided at the top of the rotating cooling box 67 , a second slider 617 is slidably provided inside the second annular slider 616 , and the second slider 617 is symmetrically provided inside the second annular slider 616 , and the bottom of the second annular slider 616 is fixedly connected to the upper end of the hydraulic push rod 618 .

[0072] The second fixed disk 619, the lower end of the hydraulic push rod 618 is fixedly connected to the top of the second fixed disk 619, and a rotating joint 620 is rotatably arranged at the center of the top of the rotating cooling box 67. The upper end of the rotating joint 620 is fixedly connected to the lower end of the air inlet pipe 621, and the bottom air outlet of the air pump 9 is fixedly connected to the upper end of the air inlet pipe 621. Through holes 622 are provided on the front and rear sides of the rotating cooling box 67. In addition to facilitating the placement of polyurethane foam flame retardant on the first fixed disk 610 in the rotating cooling box 67, the through holes 622 can also serve as exhaust ports for hot gas discharge.

[0073] The working principle of this embodiment is:

[0074] Bottom plate 1, anti-skid rubber pad 2, cooling water tank 3, water outlet electric valve 4, water inlet 5, cooling box 6, damper 61, buffer rubber pad 62, motor 63, transmission shaft 64, first shaft seat 65, first gear 66, rotating cooling box 67, second shaft seat 68, second gear 69, first fixed plate 610, planetary gear 611, first annular slide 612, first slider 613, air inlet 614, air outlet 615, second annular slider 616, second slider 617, hydraulic push rod 618, second fixed plate 619, rotating joint 620, air inlet pipe 621, through hole 622, box door 7, controller 8, air pump 9, air outlet pipe 10, fin cooling pipe 11

[0075] First, after the polyurethane foam flame retardant is placed in the cooling box 6, it is placed on the first fixed plate 610 in the rotating cooling box 67 through the through hole 622, and then the controller 8 drives the hydraulic push rod 618 to push the second fixed plate 619 downward to clamp the polyurethane foam flame retardant that needs to be cooled.

[0076] Second, when the air pump 9 is started, the air pump 9 blows the external cooling air into the rotary cooling box 67 through the air inlet pipe 621, the rotary joint 620, the air inlet duct 614 and the air outlet 615 to cool the polyurethane foam flame retardant.

[0077] Third, when the polyurethane foam flame retardant is blow-cooled in the rotating cooling box 67, the controller 8 can be used to drive the motor 63 to work. The motor 63 drives the transmission shaft 64 to rotate. The rotation of the transmission shaft 64 drives the first gear 66 and the first fixed plate 610 to rotate. When the first fixed plate 610 rotates, the friction force generated by clamping the polyurethane foam flame retardant with the second fixed plate 619 drives the second fixed plate 619 to rotate, and then drives the polyurethane foam flame retardant to rotate.

[0078] Fourth, at the same time, the first gear 66 rotates to drive the second gear 69 to rotate, and the first gear 66 and the second gear 69 rotate in opposite directions. The second shaft seat 68 rotates to drive the second gear 69 to rotate. The second gear 69 rotates to drive the planetary gear 611 meshing with the second gear 69 to rotate, and the planetary gear 611 and the first gear 66 form a reverse rotation, so that the rotating cooling box 67 and the polyurethane foam flame retardant rotate in opposite directions, so that the polyurethane foam flame retardant is more efficient in jet cooling.

[0079] The utility model provides a polyurethane foam flame retardant cooling device through improvement, which is provided with a fin cooling pipe 11, and uses an air pipe 10 to guide the hot air in the cooling box 6 into the fin cooling pipe 11 to exchange with the cooling water in the cooling water tank 3, so as to cool down the hot air in the fin cooling pipe 11 and then discharge it by the fin cooling pipe 11 to prevent the hot air generated after the device cools down the polyurethane foam flame retardant from being directly discharged and causing harm to the staff around the device; at the same time, a rotating cooling box 67 is provided, and the first gear 66, the second gear 69 and the planetary gear 611 are used to drive the rotating cooling box 67 to rotate in the opposite direction to the polyurethane foam flame retardant, so that the polyurethane foam flame retardant has higher efficiency in jet cooling.

[0080] The above shows and describes the basic principle, main features and advantages of the utility model, and the standard parts used in the utility model can be purchased from the market, and special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt mature conventional means such as bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0081] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A polyurethane foam flame retardant cooling device, comprising a base plate (1), a non-slip rubber pad (2) fixedly arranged at the bottom of the base plate (1), a cooling water tank (3) fixedly arranged at the right side of the top of the base plate (1), and a water outlet electric valve (4) fixedly arranged below the right end surface of the cooling water tank (3); Features: Also includes: A water inlet (5), wherein the cooling water tank (3) is provided with a water inlet (5) on the right side of the top; A cooling box (6), wherein a cooling box (6) is fixedly arranged at the middle of the top of the bottom plate (1); A box door (7), the front end surface of the cooling box (6) is hingedly connected with the box door (7); A controller (8), the left end surface of the cooling box (6) is fixedly provided with a controller (8); An air pump (9), the top of the cooling box (6) is fixedly provided with an air pump (9); An air outlet pipe (10), wherein the air outlet below the right end surface of the cooling box (6) is fixedly connected to the left end of the air outlet pipe (10), and the air inlet on the left side of the top of the cooling box (6) is fixedly connected to the right end of the air outlet pipe (10); A fin-type cooling pipe (11), wherein the top of the cooling water box (3) is fixedly provided with a fin-type cooling pipe (11), and the left air inlet at the top of the cooling water box (3) is fixedly connected to the left end of the fin-type cooling pipe (11), and the right air outlet at the top of the cooling water box (3) is fixedly connected to the right end of the fin-type cooling pipe (11).

2. A polyurethane foam flame retardant cooling device according to claim 1, characterized in that: The cooling box (6) comprises: A damper (61), the bottom of the cooling box (6) is fixedly provided with a damper (61), and the dampers (61) are provided in two groups symmetrically at the bottom of the cooling box (6), and the top of the bottom plate (1) is fixedly connected to the lower end of the damper (61); A buffer rubber pad (62), wherein a buffer rubber pad (62) is fixedly arranged at the bottom edge of the cooling box (6); A motor (63) is fixedly arranged at the middle end of the bottom of the cooling box (6).

3. A polyurethane foam flame retardant cooling device according to claim 2, characterized in that: The cooling box (6) also includes: A transmission shaft (64), wherein the output end of the motor (63) is fixedly connected to the lower end of the transmission shaft (64); A first shaft seat (65), wherein the first shaft seat (65) is fixedly arranged at the middle end of the bottom of the cooling box (6), and the upper end of the transmission shaft (64) passes through the first shaft seat (65); A first gear (66), the top of the first shaft seat (65) is rotatably provided with the first gear (66), and the outer surface of the transmission shaft (64) is fixedly connected to the inner surface of the first gear (66).

4. A polyurethane foam flame retardant cooling device according to claim 3, characterized in that: The cooling box (6) also includes: A rotating cooling box (67), wherein a rotating cooling box (67) is rotatably arranged at the bottom of the cooling box (6); A second shaft seat (68), the second shaft seat (68) being fixedly arranged on the left side of the bottom of the cooling box (6); The second gear (69), the top of the second shaft seat (68) is rotatably connected to the bottom of the second gear (69), and the left end of the first gear (66) is meshed with the right end of the second gear (69).

5. A polyurethane foam flame retardant cooling device according to claim 4, characterized in that: The cooling box (6) also includes: A first fixed disk (610), wherein the upper end of the transmission shaft (64) is fixedly connected to the center of the bottom of the first fixed disk (610); A planetary gear (611), wherein a planetary gear (611) is fixedly arranged below the inner surface of the rotary cooling box (67), and the left end of the second gear (69) is meshed with the inner end of the planetary gear (611); A first annular chute (612), a first annular chute (612) is provided at the inner bottom of the cooling box (6).

6. A polyurethane foam flame retardant cooling device according to claim 5, characterized in that: The cooling box (6) also includes: A first sliding block (613), wherein the first sliding blocks (613) are fixedly arranged on the left and right sides of the bottom of the rotary cooling box (67), and the first sliding blocks (613) are slidably arranged in the first annular sliding groove (612); Air inlet duct (614), the inner walls on the left and right sides of the rotary cooling box (67) are provided with air inlet duct (614); Air outlet holes (615), air outlet holes (615) are provided on the left and right sides of the inner surface of the rotary cooling box (67), and the air inlet duct (614) is connected to the air outlet holes (615).

7. A polyurethane foam flame retardant cooling device according to claim 6, characterized in that: The cooling box (6) also includes: A second annular slider (616), wherein a second annular slider (616) is provided at the top of the rotary cooling box (67); A second slider (617), wherein the second slider (617) is slidably disposed inside the second annular slider (616), and the second slider (617) is symmetrically disposed inside the second annular slider (616); A hydraulic push rod (618), wherein the bottom of the second annular sliding block (616) is fixedly connected to the upper end of the hydraulic push rod (618).

8. A polyurethane foam flame retardant cooling device according to claim 7, characterized in that: The cooling box (6) also includes: A second fixed plate (619), wherein the lower end of the hydraulic push rod (618) is fixedly connected to the top of the second fixed plate (619); A rotating joint (620), wherein a rotating joint (620) is rotatably arranged at the center of the top of the rotating cooling box (67); An air inlet pipe (621), the upper end of the rotating joint (620) is fixedly connected to the lower end of the air inlet pipe (621), and the bottom air outlet of the air pump (9) is fixedly connected to the upper end of the air inlet pipe (621); A through hole (622), wherein the rotary cooling box (67) is provided with a through hole (622) on both the front and rear sides.

Images