Cooling equipment for aluminum alloy hub spinning die

Abstract

The utility model relates to the technical field of hub machining, and discloses aluminum alloy hub spinning die cooling equipment which comprises a supporting bottom plate, an aluminum alloy hub spinning die part and a pressing die cooling circulation part, and a supporting cushion block is fixedly installed at the bottom of the supporting bottom plate. The cooling through block and the circuitous pipe structure in the cooling box are matched with the first circulating cooling pump and the second circulating cooling pump, cooling liquid can efficiently and circularly flow in the cooling box, the cooling liquid can circularly flow among the water-cooling liquid storage box, the cooling ring block, the cooling box and the recycling box due to the design of the cooling liquid circulating system, and cooling efficiency is improved. The first ring block circulating pump and the second ring block circulating pump are responsible for circulation of cooling liquid in the cooling ring block, the first circulating cooling pump and the second circulating cooling pump are responsible for circulation of cooling liquid in the cooling box, and the recycling box plays a role in temporarily storing used cooling liquid and exchanging the used cooling liquid with the water-cooling liquid storage box. And a plurality of circulating pumps are arranged, so that the cooling system can be flexibly adjusted according to actual production conditions.

Description

TECHNICAL FIELD

[0001] The utility model relates to a hub machining technical field, concretely is a kind of aluminium alloy hub spinning die cooling equipment. BACKGROUND

[0002] In the spinning process of aluminium alloy hub, the temperature control of die is particularly crucial. This is because, in the spinning process, die and aluminium alloy material in high temperature state will be in contact continuously, and this contact will cause die to absorb a large amount of heat rapidly. If the absorbed heat cannot be dissipated in time and effectively, the temperature of die will rise sharply, thereby affecting the quality and efficiency of processing.

[0003] Excessive die temperature can cause many problems. On the one hand, it can cause the forming precision of aluminium alloy hub to decrease seriously, so that the product has defects such as size deviation and uneven wall thickness, and cannot meet the requirements of high-quality production. On the other hand, it can change the mechanical properties of die material, such as hardness reduction and toughness deterioration, thereby greatly shortening the service life of die, increasing the replacement frequency and cost of die, and the traditional die cooling method often has the disadvantages of uneven cooling and low cooling efficiency, which is difficult to adapt to the severe challenges faced by modern large-scale and high-precision production of aluminium alloy hub. SUMMARY

[0004] The utility model aims at providing an aluminium alloy hub spinning die cooling equipment to solve the problems raised in the background.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an aluminium alloy hub spinning die cooling equipment, comprising a support base plate, an aluminium alloy hub spinning die part and a die cooling circulation part, wherein the bottom of the support base plate is fixedly installed with a support pad block; the aluminium alloy hub spinning die part is arranged on the top of the support base plate; and the die cooling circulation part is arranged on the top of the support base plate.

[0006] Preferably, the aluminium alloy hub spinning die part specifically comprises: a support rod fixedly installed on the top of the support base plate; a die platform fixedly installed on the top of the support rod; a support column fixedly installed on the top of the die platform; a support plate fixedly installed on the top of the support column; a die cylinder fixedly installed on the top of the support plate; and a lower spinning module fixedly installed on the outer wall of the top of the die platform.

[0007] The die cylinder is arranged, which can accurately control the downward pressure of the upper spinning module according to the requirements of aluminium alloy hub spinning process. Different aluminium alloy hub materials, sizes and design requirements require different forming pressures in the spinning process.

[0008] Preferably, the telescopic end of the die cylinder is movably penetrated through the top outer wall of the support plate and extends to the bottom outer wall of the support plate, the telescopic end of the die cylinder is fixedly connected with the upper spinning die module, the inner wall of the lower spinning die module is fixedly installed with the die core one at equal intervals in circumference, the inner wall of the lower spinning die module is fixedly installed with the die core two, and the inside of the lower spinning die module is provided with the aluminum alloy hub.

[0009] Preferably, the die cooling circulation part specifically comprises: a water-cooled liquid storage tank fixedly installed on the top of the support bottom plate; a water-cooled machine fixedly installed on the top outer wall of the support bottom plate; a recovery tank communicatively arranged on the top of the water-cooled machine; a cooling ring block fixedly installed on the top outer wall of the support bottom plate; a ring block circulation pump one fixedly installed on one side of the cooling ring block; a ring block circulation pump two fixedly installed on the other side of the cooling ring block; and a cooling tank fixedly installed on the bottom outer wall of the lower spinning die module.

[0010] The water-cooled liquid storage tank is arranged, which serves as a storage container for the cooling liquid and can store a certain amount of cooling liquid, thereby ensuring sufficient supply of the cooling liquid during the entire spinning die cooling process. During the operation of the equipment, whether it is the filling of the cooling pipeline in the initial start-up stage or the loss of the cooling liquid due to evaporation, micro-leakage and other reasons during long-time operation, the water-cooled liquid storage tank can timely supplement and maintain the stable operation of the cooling liquid circulation system.

[0011] Preferably, the cooling ring block is sleeved on the outer wall of the lower spinning die module, the inside of the cooling ring block is provided with a water-cooled cavity, the input end of the ring block circulation pump one is communicatively provided with a connecting elbow one, and the other end of the connecting elbow one is communicatively connected with the water-cooled liquid storage tank.

[0012] Preferably, the output end of the ring block circulation pump one is communicatively provided with a communicating pipe one, the other end of the communicating pipe one is communicatively connected with the water-cooled cavity, the input end of the ring block circulation pump two is communicatively provided with a communicating pipe two, the other end of the communicating pipe two is communicatively connected with the water-cooled cavity, and the output end of the ring block circulation pump two is communicatively provided with a connecting elbow two and a recovery tank.

[0013] The ring block circulation pump one and the ring block circulation pump two are arranged, the ring block circulation pump one is responsible for extracting and delivering the cooling liquid in the water-cooled liquid storage tank to the water-cooled cavity of the cooling ring block. The power provided by the ring block circulation pump one ensures that the cooling liquid can stably flow into the cooling ring block, overcomes the resistance that may exist in the pipeline and the cooling ring block, guarantees the initial circulation power of the cooling liquid, and the ring block circulation pump two extracts and delivers the cooling liquid after it flows through the water-cooled cavity of the cooling ring block back to the recovery tank, thereby realizing the directional circulation of the cooling liquid between the cooling ring block and the recovery tank. Through the control of the flow and pressure of the ring block circulation pump two, the residence time and flow rate of the cooling liquid in the cooling ring block can be adjusted, and thus the cooling effect can be accurately controlled.

[0014] Preferably, the interior of the cooling box is fixedly installed with cooling channels at equal intervals, the cooling channels are communicated with each other and provided with a bypass pipe, the bottom of the cooling box is fixedly installed with a mounting box, the mounting box is fixedly installed on the top of a water-cooled liquid storage tank, the interior of the mounting box is fixedly installed with a circulating cooling pump one and a circulating cooling pump two respectively, the input end of the circulating cooling pump one is communicated with a circulating pipe one, and the other end of the circulating pipe one is communicated with the water-cooled liquid storage tank.

[0015] Preferably, the output end of the circulating cooling pump one is communicated with a circulating elbow one, the other end of the circulating elbow one is communicated with the cooling channel, the input end of the circulating cooling pump two is communicated with a circulating elbow two, the other end of the circulating elbow two is communicated with the cooling channel, the output end of the circulating cooling pump two is communicated with a circulating pipe two, and the other end of the circulating pipe two is communicated with a recovery tank, and the recovery tank and the water-cooled liquid storage tank are communicated with each other and provided with a water pipe.

[0016] The circulating cooling pump one and the circulating cooling pump two are arranged, the circulating cooling pump one transports the cooling liquid to the cooling channel at a large flow rate and pressure, and quickly removes heat. When the overall temperature of the mold is uniform but still needs to be continuously cooled, the working parameters of the circulating cooling pump two can be appropriately adjusted to maintain stable cooling effect. The double-pump arrangement can flexibly cope with various cooling conditions, and greatly improves the cooling efficiency compared with a single-pump system. The cooling channels are communicated with each other through the bypass pipe, and the circulating cooling pump one and the circulating cooling pump two provide cooling liquid to the cooling channels from different paths. This helps to more evenly distribute the cooling liquid in the cooling box, thereby ensuring that the entire downward spinning mold module can be uniformly cooled.

[0017] The utility model provides a kind of aluminum alloy wheel hub spinning die cooling equipment. With following beneficial effects:

[0018] (1), the utility model discloses a die core one and die core two are set in the inside of the downward spinning module and play a key forming role in spinning process, and the die core one is distributed at equal intervals to the circumference and can be supported and shaped to the inner wall of aluminum alloy wheel hub, so that the wheel hub can be gradually formed according to predetermined shape and size when spinning, and this structure design makes the integration of aluminum alloy wheel hub spinning die and the entire cooling equipment more convenient, provides reasonable layout basis for the cooling liquid circulation path design of subsequent die cooling circulation part, so that cooling ring block and cooling box and other cooling components can more effectively cool the mold.

[0019] (2), the utility model discloses a cooling through piece and detour pipe structure in cooling box, cooperate circulating cooling pump one and circulating cooling pump two, can make cooling liquid form efficient circulation flow in cooling box, and the design of cooling liquid circulation system makes cooling liquid can circulate flow between water -cooled liquid tank, cooling ring piece, cooling box and recovery tank, and ring piece circulating pump one and ring piece circulating pump two are responsible for the circulation of cooling liquid in cooling ring piece, and circulating cooling pump one and circulating cooling pump two are responsible for the circulation of cooling liquid in cooling box, and recovery tank plays the role of the temporary storage of used cooling liquid and exchanges with water -cooled liquid tank, and multiple circulating pumps make cooling system can be flexibly adjusted according to actual production situation. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is overall structure front view perspective drawing of the utility model;

[0021] Figure 2 It is aluminum alloy wheel hub spinning die part partial view of the utility model;

[0022] Figure 3 It is die cooling circulation part partial view of the utility model;

[0023] Figure 4 It is cooling through piece partial view of the utility model.

[0024] In the drawing: 1 support base plate, 2 support cushion block, 3 aluminum alloy wheel hub spinning die part, 311 support rod, 312 die platform, 313 support column, 314 support plate, 315 die cylinder, 316 upper spinning module, 317 lower spinning module, 318 die core one, 319 aluminum alloy wheel hub, 3111 die core two, 4 die cooling circulation part, 411 water -cooled liquid tank, 412 water -cooled machine, 413 water pipe, 414 recovery tank, 415 ring piece circulating pump two, 416 ring piece circulating pump one, 417 cooling ring piece, 418 connecting elbow one, 419 water -cooled cavity, 4111 installation box, 4112 circulating cooling pump one, 4113 circulating cooling pump two, 4114 cooling box, 4115 circulating elbow one, 4116 cooling through piece, 4117 detour pipe, 4118 connecting elbow two. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. Apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0026] Examples of the described embodiments are illustrated in the accompanying drawings, throughout which like reference characters have been used to designate like elements or elements having similar functions. The embodiments described below by reference to the drawings are exemplary and are intended to be illustrative of the present application and are not to be construed as limiting the present application. Embodiment

[0027] The preferred embodiment of the aluminum alloy hub spinning die cooling equipment provided by the present application is shown in the accompanying drawings, wherein the same or similar reference numbers represent the same or similar elements or elements having the same or similar functions throughout. Figures 1-4 The aluminum alloy hub spinning die cooling equipment comprises a supporting bottom plate 1, an aluminum alloy hub spinning die part 3, and a die cooling circulation part 4. The supporting bottom plate 1 is fixedly installed with supporting pads 2 at the bottom. The aluminum alloy hub spinning die part 3 is arranged at the top of the supporting bottom plate 1. The die cooling circulation part 4 is arranged at the top of the supporting bottom plate 1.

[0028] The aluminum alloy hub spinning die part 3 specifically comprises a supporting rod 311 fixedly installed at the top of the supporting bottom plate 1, a die platform 312 fixedly installed at the top of the supporting rod 311, a supporting column 313 fixedly installed at the top of the die platform 312, a supporting plate 314 fixedly installed at the top of the supporting column 313, a die cylinder 315 fixedly installed at the top of the supporting plate 314, and a lower spinning module 317 fixedly installed at the outer wall at the top of the die platform 312.

[0029] The telescopic end of the die cylinder 315 is movably penetrated through the outer wall at the top of the supporting plate 314 and extends to the outer wall at the bottom of the supporting plate 314. The telescopic end of the die cylinder 315 is fixedly connected with an upper spinning module 316. The inner wall of the lower spinning module 317 is fixedly installed with die cores one 318 at equal intervals. The inner wall of the lower spinning module 317 is fixedly installed with die cores two 3111. The aluminum alloy hub 319 is arranged in the lower spinning module 317.

[0030] In the process of the present embodiment, the aluminum alloy hub 319 to be spun is placed in the lower spinning module 317. The die cores one 318 and the die cores two 3111 of the inner wall of the lower spinning module 317 play a role in preliminary positioning and supporting the aluminum alloy hub 319. The die cylinder 315 is started. The telescopic end of the die cylinder 315 extends downward, driving the upper spinning module 316 to move downward and cooperating with the lower spinning module 317 to perform spinning operation on the aluminum alloy hub 319. The structure design makes the integration of the aluminum alloy hub spinning die part and the entire cooling equipment more convenient, provides a reasonable layout basis for the cooling liquid circulation path design of the subsequent die cooling circulation part, and enables the cooling ring block and the cooling box and other cooling components to more effectively cool the die. Embodiment

[0031] On the basis of Embodiment One, the preferred embodiment of the aluminum alloy hub spinning die cooling equipment provided by the present application is shown in the accompanying drawings, wherein the same or similar reference numbers represent the same or similar elements or elements having the same or similar functions throughout.Figures 1-4 As shown: the mold cooling cycle part 4 specifically includes: a water-cooled storage tank 411 fixedly installed on the top of the support base plate 1; a water-cooled machine 412 fixedly installed on the top outer wall of the support base plate 1; a recovery tank 414 communicatively arranged on the top of the water-cooled machine 412; a cooling ring block 417 fixedly installed on the top outer wall of the support base plate 1; a ring block circulation pump one 416 fixedly installed on one side of the cooling ring block 417; a ring block circulation pump two 415 fixedly installed on the other side of the cooling ring block 417; and a cooling tank 4114 fixedly installed on the bottom outer wall of the lower spinning die block 317.

[0032] The cooling ring block 417 is sleeved on the outer wall of the lower spinning die block 317, the inside of the cooling ring block 417 is provided with a water-cooled cavity 419, the input end of the ring block circulation pump one 416 is communicatively provided with a connecting elbow one 418, and the other end of the connecting elbow one 418 is in communication with the water-cooled storage tank 411.

[0033] The output end of the ring block circulation pump one 416 is communicatively provided with a communication pipe one, the other end of the communication pipe one is in communication with the water-cooled cavity 419, the input end of the ring block circulation pump two 415 is communicatively provided with a communication pipe two, the other end of the communication pipe two is in communication with the water-cooled cavity 419, and the output end of the ring block circulation pump two 415 is communicatively provided with a connecting elbow two 4118 in communication with the recovery tank 414.

[0034] The inside of the cooling tank 4114 is fixedly provided with cooling through blocks 4116 at equal intervals, the cooling through blocks 4116 are communicatively provided with bypass pipes 4117 therebetween, the bottom of the cooling tank 4114 is fixedly provided with a mounting tank 4111, the mounting tank 4111 is fixedly installed on the top of the water-cooled storage tank 411, the inside of the mounting tank 4111 is fixedly provided with a circulation cooling pump one 4112 and a circulation cooling pump two 4113 respectively, the input end of the circulation cooling pump one 4112 is communicatively provided with a circulation pipe one, and the other end of the circulation pipe one is in communication with the water-cooled storage tank 411.

[0035] The output end of the circulation cooling pump one 4112 is communicatively provided with a circulation elbow one 4115, the other end of the circulation elbow one 4115 is in communication with the cooling through blocks 4116, the input end of the circulation cooling pump two 4113 is communicatively provided with a circulation elbow two, the other end of the circulation elbow two is in communication with the cooling through blocks 4116, the output end of the circulation cooling pump two 4113 is communicatively provided with a circulation pipe two, and the other end of the circulation pipe two is in communication with the recovery tank 414, and a water pipe 413 is communicatively arranged between the recovery tank 414 and the water-cooled storage tank 411.

[0036] In the process of the embodiment, the cooling liquid in the water-cooled liquid storage tank 411 is extracted by the circulating cooling pump 4112 through the circulating pipe 1, and then is delivered to the cooling channels 4116 in the cooling tank 4114 through the circulating elbow pipe 1 115. The cooling liquid circulates in the cooling channels 4116 through the bypass pipes 4117, absorbs the heat transferred from the lower spinning module 317, and cools the bottom of the lower spinning module 317. At the same time, the ring block circulating pump 1 416 is started to extract the cooling liquid in the water-cooled liquid storage tank 411 through the connecting elbow pipe 1 418, and then deliver it to the water-cooled cavity 419 in the cooling ring block 417 through the communicating pipe 1. The cooling liquid circulates in the water-cooled cavity 419 to further cool the outer wall of the lower spinning module 317 from the outside. The cooling liquid can form efficient circulating flow in the cooling tank, and the multiple circulating pumps can flexibly adjust the cooling system according to the actual production situation.

[0037] Working principle: in use:

[0038] Step one: first, place the aluminum alloy hub 319 to be spun in the lower spinning module 317. The mold core 1 318 and the mold core 2 3111 on the inner wall of the lower spinning module 317 play a preliminary positioning and supporting role on the aluminum alloy hub 319. Start the mold cylinder 315, and the extension end of the mold cylinder 315 extends downward to drive the upper spinning module 316 to move downward and cooperate with the lower spinning module 317 to perform spinning operation on the aluminum alloy hub 319.

[0039] Step two: the cooling liquid in the water-cooled liquid storage tank 411 is extracted by the circulating pipe one under the action of the circulating cooling pump one 4112, and then is delivered to the cooling channels 4116 inside the cooling tank 4114 through the circulating elbow pipe one 4115, the cooling liquid circulates in the cooling channels 4116 through the bypass pipe 4117, absorbs the heat transferred from the lower spinning module 317, and cools the bottom of the lower spinning module 317, at the same time, the ring block circulating pump one 416 is started, the cooling liquid in the water-cooled liquid storage tank 411 is extracted through the connecting elbow pipe one 418, and then is delivered to the water-cooled cavity 419 inside the cooling ring block 417 through the communicating pipe one, the cooling liquid circulates in the water-cooled cavity 419, further cools the outer wall of the lower spinning module 317 from the outside, the cooling liquid cooled by the cooling tank 4114 and the cooling ring block 417 is extracted from the water-cooled cavity 419 through the communicating pipe two under the action of the ring block circulating pump two 415, and is delivered to the recovery tank 414 through the connecting elbow pipe two 4118, the cooling liquid in the cooling channels 4116 is extracted through the circulating elbow pipe two by the circulating cooling pump two 4113, and then is delivered to the recovery tank 414 through the circulating pipe two, the cooling liquid in the recovery tank 414 is returned to the water-cooled liquid storage tank 411 through the water pipe 413, the water-cooled machine 412 cools the cooling liquid in the water-cooled liquid storage tank 411, so that the cooling liquid is kept in a suitable temperature range, so as to carry out the next round of cooling cycle.

[0040] It should be noted that, in this text, relational terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0041] Finally, it should be noted that: the above only describes the preferred embodiments of the present application, and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An aluminum alloy wheel hub spinning die cooling device comprising a support base plate (1), an aluminum alloy wheel hub spinning die part (3), a die cooling circulation part (4), characterized in that, The bottom of the support base plate (1) is fixedly installed with a support cushion block (2); the aluminum alloy hub spinning die part (3) is arranged on the top of the support base plate (1); and the die cooling circulation part (4) is arranged on the top of the support base plate (1).

2. The cooling apparatus for a spinning die of an aluminum alloy wheel hub according to claim 1, characterized by, The aluminum alloy hub spinning die part (3) specifically comprises: A support rod (311) is fixedly installed on the top of the support base plate (1); A die platform (312) is fixedly installed on the top of the support rod (311); A support column (313) is fixedly installed on the top of the die platform (312); A support plate (314) is fixedly installed on the top of the support column (313); A die cylinder (315) is fixedly installed on the top of the support plate (314); A lower spinning module (317) is fixedly installed on the outer wall of the top of the die platform (312).

3. An aluminum alloy wheel spinning die cooling apparatus as defined in claim 2, wherein The telescopic end of the die cylinder (315) is movably penetrated through the outer wall of the top of the support plate (314) and extends to the outer wall of the bottom of the support plate (314), the telescopic end of the die cylinder (315) is fixedly connected with an upper spinning module (316), the inner wall of the lower spinning module (317) is fixedly installed with a die core one (318) at equal intervals in the circumference, the inner wall of the lower spinning module (317) is fixedly installed with a die core two (3111), and the inside of the lower spinning module (317) is provided with an aluminum alloy hub (319).

4. The cooling apparatus for a spinning die of an aluminum alloy wheel hub according to claim 1, characterized by The die cooling circulation part (4) specifically comprises: A water-cooled liquid storage tank (411) is fixedly installed on the top of the support base plate (1); A water-cooled machine (412) is fixedly installed on the outer wall of the top of the support base plate (1); A recovery tank (414) is communicatively arranged on the top of the water-cooled machine (412); A cooling ring block (417) is fixedly installed on the outer wall of the top of the support base plate (1); A ring block circulation pump one (416) is fixedly installed on one side of the cooling ring block (417); A ring block circulation pump two (415) is fixedly installed on the other side of the cooling ring block (417); A cooling tank (4114) is fixedly installed on the outer wall of the bottom of the lower spinning module (317).

5. An aluminum alloy wheel spinning die cooling apparatus as defined in claim 4, wherein, The cooling ring block (417) is sleeved on the outer wall of the lower spinning module (317), the inside of the cooling ring block (417) is provided with a water-cooled cavity (419), the input end of the ring block circulation pump one (416) is communicatively provided with a connecting elbow one (418), and the other end of the connecting elbow one (418) is communicatively connected with the water-cooled liquid storage tank (411).

6. An aluminum alloy wheel spinning die cooling apparatus as defined in claim 5, wherein The output end of the ring block circulation pump one (416) is communicatively provided with a communication pipe one, the other end of the communication pipe one is communicatively connected with the water-cooled cavity (419), the input end of the ring block circulation pump two (415) is communicatively provided with a communication pipe two, the other end of the communication pipe two is communicatively connected with the water-cooled cavity (419), and the output end of the ring block circulation pump two (415) is communicatively provided with a connecting elbow two (4118) and the recovery tank (414).

7. An aluminum alloy wheel spinning die cooling apparatus as defined in claim 6, wherein The inside of the cooling box (4114) is fixedly installed with cooling passages (4116) equidistantly, the cooling passages (4116) are communicated with bypass pipes (4117), the bottom of the cooling box (4114) is fixedly installed with an installation box (4111), the installation box (4111) is fixedly installed on the top of a water-cooling storage tank (411), the inside of the installation box (4111) is fixedly installed with a circulating cooling pump one (4112) and a circulating cooling pump two (4113) respectively, the input end of the circulating cooling pump one (4112) is communicated with a circulating pipe one, the other end of the circulating pipe one is communicated with the water-cooling storage tank (411).

8. An aluminum alloy wheel spinning die cooling apparatus as defined in claim 7, wherein, The output end of the circulating cooling pump one (4112) is communicated with a circulating elbow one (4115), the other end of the circulating elbow one (4115) is communicated with the cooling passages (4116), the input end of the circulating cooling pump two (4113) is communicated with a circulating elbow two, the other end of the circulating elbow two is communicated with the cooling passages (4116), the output end of the circulating cooling pump two (4113) is communicated with a circulating pipe two, the other end of the circulating pipe two is communicated with a recovery tank (414), the recovery tank (414) and the water-cooling storage tank (411) are communicated with a water pipe (413).

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