A current on-off cycling device

Abstract

The application discloses a current on-off cycle device, which comprises a control cabinet, a protective cover is fixedly connected to the upper end of the control cabinet, a plurality of control panels are arranged on the control cabinet, a plurality of electric connectors are fixedly connected to the control cabinet, a display screen is fixedly connected to the control cabinet, and a boss heat dissipation seat is fixedly connected to the control cabinet. In the application, one end of a test product is placed into a placing frame, then the test product is pushed, the conductive needle is further moved, when the test product is completely placed into the placing frame, the conductive needle is in contact with the test product, meanwhile, the second conductive plate is in contact with the first conductive plate, so that the test product can be conveniently placed by the staff, the staff can conveniently test, the staff does not need to smear silica gel, the staff's work is further facilitated, and the work efficiency of the staff is indirectly improved.

Description

Technical Field

[0001] This invention relates to the field of chip testing equipment technology, and more specifically, to a current switching cycle device. Background Technology

[0002] A chip is an integrated circuit that has circuits fabricated on the surface of a semiconductor chip. Integrated circuits can integrate a large number of microtransistors into a small chip. After the chip is manufactured, it needs to be subjected to current start-stop cycle testing. However, traditional chip current start-stop cycle testing equipment has poor testing accuracy, and therefore cannot accurately detect the degree of damage to the device caused by the thermal and electrical reaction effects generated under the current cycle on and off environment.

[0003] Existing chip current start-stop cycle testing devices facilitate user control of the temperature controller and tester via control panel buttons; they also facilitate heat dissipation of the temperature controller through heat sink fins and ventilation holes to prevent overheating and damage; the controller allows for user control of the internal electronic components; and the display screen allows for easy observation of the tester's values. However, existing chip current start-stop cycle testing devices present the following problems during use: The current devices require operators to use silicone to adhere the chip and heat sink fins, resulting in a significant workload and reduced testing efficiency, further impacting operator productivity and indirectly decreasing overall work efficiency.

[0004] Therefore, we propose a current switching cycle device to solve the above problems. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, embodiments of the present invention provide a current switching cycle device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a current switching circulation device, including a control cabinet, a protective cover fixedly connected to the upper end of the control cabinet, multiple control panels provided on the control cabinet, multiple electrical contacts fixedly connected to the control cabinet, a display screen fixedly connected to the control cabinet, and a boss heat sink fixedly connected to the control cabinet.

[0007] The control cabinet is connected to a heating assembly, and the heating assembly is connected to multiple locking assemblies, which are respectively connected to multiple electrical contacts.

[0008] Each of the multiple engagement components contains a test sample, each of the multiple engagement components is connected to a conductive component, each of the multiple test samples is provided with a heat dissipation component above it, and each of the multiple heat dissipation components is provided with a partition component.

[0009] A pressing component is connected to the control cabinet, the pressing component is connected to the partition component, and a storage component is connected to the control cabinet.

[0010] The storage components are connected to the pressing components, and the storage components are connected to the rotating components.

[0011] In this device, the operator first places one end of the test sample into the placement frame, and then pushes the test sample to move the conductive needle. When the test sample is fully placed in the placement frame, the conductive needle will come into contact with the test sample, and at the same time, the second conductive plate will come into contact with the first conductive plate. This makes it convenient for the operator to place the test sample, thereby facilitating the operator's testing work. It eliminates the need for the operator to apply silicone, further simplifying the operator's work and indirectly improving the operator's work efficiency.

[0012] In a preferred embodiment, the heating assembly includes a support base fixedly connected to a control cabinet, a plurality of support columns fixedly connected to the support base, and the same heating block fixedly connected to the plurality of support columns.

[0013] In a preferred embodiment, the locking assembly includes a placement frame fixedly connected to the heating block, the placement frame having a notch and two shrinkage holes, the placement frame being frame-shaped, and the inner frame size of the placement frame being consistent with the size of the test sample.

[0014] In a preferred embodiment, the conductive assembly includes two insulating sleeves fixedly connected to the side wall of the placement frame. Each of the two insulating sleeves is provided with a first conductive plate. Each of the two insulating sleeves is connected with a wire, and the two wires are respectively connected to a terminal. Each of the two contraction holes is provided with a movable plate. Each of the two movable plates is fixedly connected with a second conductive plate, and each of the two movable plates is connected with a conductive pin.

[0015] In a preferred embodiment, two limiting rods are fixedly connected to the insulating sleeve. One end of each limiting rod passes through the side wall of the movable plate and extends into the interior. Each limiting rod is fitted with a limiting spring, and the two ends of each limiting spring are connected to the movable plate and the insulating sleeve, respectively.

[0016] In a preferred embodiment, the heat dissipation assembly includes a heat dissipation plate disposed above the test sample, a heat conduction plate fixedly connected to the upper end of the heat dissipation plate, and a plurality of symmetrical heat dissipation fins fixedly connected to the side wall of the heat conduction plate.

[0017] In a preferred embodiment, the partition assembly includes a partition plate fixedly connected to the inner sidewall of the heat-conducting plate, and multiple guide pipes are fixedly connected to the sidewall of the heat-conducting plate. Openings are provided at the connection points between the heat-conducting plate and the multiple heat dissipation fins.

[0018] In a preferred embodiment, the pressing assembly includes two electrically telescopic rods fixedly connected to the control cabinet. The upper ends of the two electrically telescopic rods are fixedly connected to connecting rods, and one end of the two connecting rods is fixedly connected to the same connecting plate. The connecting plate is connected to two heat-conducting plates.

[0019] In a preferred embodiment, the storage component includes a water tank fixedly connected to a control cabinet. The water tank has multiple air inlets at its air inlet end and multiple air outlets at its output end. A vertical column is fixedly connected to the bottom inner part of the water tank, and a water pump is fixedly connected to the upper end of the vertical column. An output pipe is fixedly connected to the output end of the water pump, and one end of the output pipe is connected to a connecting plate. An input pipe passes through the water tank at its input end, and one end of the input pipe is connected to the connecting plate. A flow divider is fixedly connected to the top inner part of the water tank, and the flow divider is connected to the input pipe.

[0020] In a preferred embodiment, the rotating assembly includes multiple bent rods fixedly connected to the top of the water tank. One end of each bent rod is rotatably connected to a rotating rod. First pulleys are coaxially fixedly connected to the side walls of each of the rotating rods. Fan blades are coaxially fixedly connected to the side walls of each of the rotating rods. A rotating shaft is fixedly connected to the drive shaft of the water pump. Multiple second pulleys are coaxially fixedly connected to the side wall of the rotating shaft. The multiple second pulleys are respectively connected to the multiple first pulleys via multiple belts. A stirring blade is coaxially fixedly connected to the side wall of the rotating shaft.

[0021] The technical effects and advantages of this invention are as follows:

[0022] 1. The staff first places one end of the test sample into the placement frame, and then pushes the test sample to move the conductive needle. When the test sample is fully placed in the placement frame, the conductive needle will come into contact with the test sample, and at the same time, the second conductive plate will come into contact with the first conductive plate. This makes it convenient for the staff to place the test sample, thus facilitating the testing work. It eliminates the need for the staff to apply silicone, further simplifying the work and indirectly improving the staff's work efficiency.

[0023] 2. The operator then activates the electric telescopic rod via the controller, bringing the heat sink on the connecting plate into contact with the test sample. The operator then activates the water pump via the controller, allowing water to enter one side of the heat sink fins and thus the heat sink plate, thereby cooling the test sample. Simultaneously, water flows from the heat sink plate to the other side of the heat sink fins. With the assistance of the guide pipe, the water then enters the distribution plate, which sprays the water into the water tank, circulating the coolant and further improving the device's heat dissipation effect, indirectly enhancing its practicality.

[0024] 3. When the water pump is working, the shaft rotates, which in turn rotates the second pulley. With the assistance of the belt, the first pulley rotates, which in turn rotates the rotating rod, causing the fan blades and the stirring blades to rotate. This cools the liquid, further improving the heat dissipation effect of the device and indirectly enhancing its practicality. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the present invention;

[0026] Figure 2 This is a first-view structural diagram of the present invention;

[0027] Figure 3 This is a schematic diagram of the first internal structure of the present invention;

[0028] Figure 4 for Figure 3 A schematic diagram of the side view structure;

[0029] Figure 5 for Figure 3 A schematic diagram of the local connection structure;

[0030] Figure 6 This is a top-view perspective diagram of the connection structure of the placement frame in this invention;

[0031] Figure 7 for Figure 6 A partially enlarged schematic diagram of the connection structure at point A in the middle;

[0032] Figure 8 This is a side view of the connection structure of the heat dissipation component in this invention;

[0033] Figure 9 This is a schematic diagram of the connection structure of the storage component in this invention;

[0034] Figure 10 for Figure 9 A schematic diagram of the internal connection structure;

[0035] Figure 11 for Figure 9 A schematic diagram of the internal side view connection structure;

[0036] Figure 12 for Figure 11 A magnified schematic diagram of the connection structure at point B in the middle.

[0037] The attached diagram is labeled as follows: 1 Control cabinet, 2 Protective cover, 3 Control panel, 4 Electrical connector, 5 Boss heat sink, 6 Display screen, 7 Test sample, 8 Support base, 9 Support column, 10 Heating block, 11 Placement frame, 12 Notch, 13 Contraction hole, 14 Insulating sleeve, 15 First conductive plate, 16 Wire, 17 Moving plate, 18 Second conductive plate, 19 Conductive needle, 20 Limiting rod, 21 Limiting spring, 22 Heat sink, 23 Heat conducting plate, 24 Heat sink fins, 25 Partition, 26 Guide pipe, 27 Opening, 28 Connecting plate, 29 Connecting rod, 30 Electric telescopic rod, 31 Water tank, 32 Air inlet, 33 Air outlet, 34 Vertical column, 35 Water pump, 36 Diverter plate, 37 Output pipe, 38 Input pipe, 39 Bending rod, 40 Rotating rod, 41 First pulley, 42 Fan blade, 43 Rotating shaft, 44 Second pulley, 45 Belt, 46 Stirring blade. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] Reference Figure 1-12 A current-on-off cycle device includes a control cabinet 1, on which multiple control panels 3 are fixedly connected. Operators can set the voltage and current via the control panels 3, generating current to heat a heating block 10. Simultaneously, operators manually place a test sample 7 (a chip) onto the heating block 10. The display screen 6 allows users to easily observe the specific values ​​of the tester and the device. The resistance is adjusted to the resistance at 30°C. Positive and negative current lines are connected to the heating block 10 to connect the chip to the power supply during testing. When the chip is powered on, its hot surface contacts the heating plate. The heating plate is maintained at 120°C using a temperature controller. The chip is supplied with the maximum voltage (80%) and current for 5 minutes, then powered off for 5 minutes. This constitutes one cycle, which is repeated 5000 times. The TEC is then removed, and the resistance of the device at 30°C is measured. If the resistance change rate after the resistance test is less than 5%, the chip passes the test.

[0040] Of particular note is that a protective cover 2 is fixedly connected to the control cabinet 1. The protective cover 2 consists of a cover body and a cover door, both of which are made of transparent material, making it convenient for staff to observe the data on the display screen 6. A bracket is fixedly connected to the control cabinet 1, and the display screen 6 is fixedly connected to the bracket, which allows staff to easily understand the relevant test data.

[0041] Multiple connectors 4 are fixedly connected to the control cabinet 1, and the multiple connectors 4 are respectively connected to the first conductive plate 15 through wires 16, which further enables the normal power supply of the test sample 7.

[0042] Meanwhile, a boss heat sink 5 is fixedly connected to the control cabinet 1, and the boss heat sink 5 is provided with heat dissipation holes to meet the normal heat dissipation of the test sample 7. It is also worth noting that a support base 8 is fixedly connected to the upper end of the control cabinet 1, and multiple support columns 9 are fixedly connected to the support base 8. The upper end of the multiple support columns 9 is fixedly connected to the same heating block 10, and the heating block 10 is heated as a whole by connecting two electrodes on the back, further meeting the heating needs of the chip.

[0043] Meanwhile, a placement frame 11 is fixedly connected to the heating block 10. The placement frame 11 is made of a non-thermal conductive material and is frame-shaped. The test sample 7 is placed in the placement frame 11 and is in contact with the heating block 10. The placement frame 11 is provided with a notch 12, which is arc-shaped, so that the staff can easily pick up the test sample 7, further facilitating the staff's work and indirectly improving the staff's work efficiency.

[0044] Meanwhile, the placement frame 11 is provided with two shrinkage holes 13, and two insulating sleeves 14 are fixedly connected to the side wall of the placement frame 11. The two insulating sleeves 14 are respectively located on one side of the two shrinkage holes 13. At the same time, a first conductive plate 15 is provided inside each of the two insulating sleeves 14. The two first conductive plates 15 are respectively connected to the connector 4 through wires 16, further satisfying the current opening of the connector 4 to the test sample 7.

[0045] It is also worth noting that each of the two shrinkage holes 13 is equipped with a movable plate 17, and a second conductive plate 18 is fixedly connected to each of the two movable plates 17. A conductive pin 19 is fixedly connected to each of the two movable plates 17, and the two conductive pins 19 are respectively connected to the two conductive plates 18. It is also worth noting that the two movable plates 17 are also made of insulating material, and the two heat-conducting pins 19 can be connected to the test sample 7, thereby providing current to the test sample 7.

[0046] Meanwhile, two limiting rods 20 are fixedly connected to each of the two insulating sleeves 14. One end of each limiting rod 20 passes through the side wall of the moving plate 17 and extends into the interior. Each limiting rod 20 is fitted with a limiting spring 21. The two limiting springs 21 enable the moving plate 17 to automatically reset when it is not compressed. When the operator places the test sample 7 into the placement frame 11, the operator first places one end of the test sample 7 into the placement frame 11, and then pushes the test sample 7. With the assistance of the limiting springs 21, the moving plate 17 can be moved, which in turn allows the conductive needle 19 to move. When the test sample 7 is completely placed into the placement frame 11, the conductive needle 19 will come into contact with the test sample 7. At the same time, the second conductive plate 18 comes into contact with the first conductive plate 15, further satisfying the device's testing of the test sample 7.

[0047] Meanwhile, a water tank 31 is fixedly connected to the side wall of the control cabinet 1, and a vertical column 34 is fixedly connected to the bottom of the water tank 31. A water pump 35 is fixedly connected to the upper end of the vertical column 34, and an output pipe 37 is fixedly connected to the output end of the water pump 35. The output pipe 37 allows water to enter the connecting plate 28. A rotating shaft 43 is fixedly connected to the drive shaft of the water pump 35, and multiple second pulleys 44 are coaxially fixedly connected to the side wall of the rotating shaft 43. A stirring blade 46 is coaxially fixedly connected to the side wall of the rotating shaft 43. It is worth noting that the water tank 31 can be filled with coolant, and the stirring blade 46 can stir the coolant to achieve the purpose of cooling the coolant.

[0048] Meanwhile, multiple bent rods 39 are fixedly connected to the inner top of the water tank 31, and one end of each bent rod 39 is rotatably connected to a rotating rod 40. Bearings are provided at the connection points between the rotating rod 40 and the bent rods 39 to allow the rotating rod 40 to rotate normally. First pulleys 41 are coaxially fixedly connected to the side walls of each rotating rod 40. These first pulleys 41 are respectively connected to second pulleys 44 via multiple belts 45. Notably, the second pulleys 44 are in different positions, allowing the first pulleys 41 to rotate normally. When the water pump 35 operates, the shaft 43 rotates, causing the second pulleys 44 to rotate. With the assistance of the belts 45, the first pulleys 41 rotate accordingly. The rotating rod 40 rotates accordingly, which in turn causes the fan blades 42 to rotate. Meanwhile, the side wall of the water tank 31 is equipped with an air inlet 32 ​​and an air outlet 33 to ensure air circulation. A flow divider plate 36 is fixedly connected to the inner top of the water tank 31 and is connected to the input pipe 38. When the water pump 35 is working, water flows from the output pipe 37 into the connecting plate 28. With the assistance of the guide pipe 26, the water flow through the connecting plate 28 is facilitated, allowing water to enter the input pipe 38 from another connecting plate 28, and then re-enter the flow divider plate 36. This allows the flow divider plate 36 to spray water, which, with the assistance of the fan blades, cools the coolant, thus improving the device's heat dissipation effect.

[0049] Meanwhile, two electric telescopic rods 20 are fixedly connected to the upper end of the control cabinet 1, and connecting rods 29 are fixedly connected to the output ends of both electric telescopic rods 20. One end of each connecting rod 29 is connected to the same connecting plate 28. It is particularly noteworthy that the input end of the connecting plate 28 is connected to the output pipe 37, and the output end of the connecting plate 28 is connected to the input pipe 38. It is also particularly noteworthy that multiple heat-conducting plates 23 are fixedly connected to the lower end of the connecting plate 28, and two of the heat-conducting plates 23 are respectively connected to the connecting plate 28. The system is configured such that multiple heat dissipation fins 24 are fixedly connected to multiple heat conduction plates 23, and openings 27 are provided at the connection points between the heat dissipation fins 24 and the multiple heat conduction plates 23 to allow water flow. At the same time, partitions 25 are fixedly connected to the inner side walls of the multiple heat conduction plates 23, which can separate the water source. The partitions 25 can also extend into the heat dissipation plate 23 at the lower end of the heat conduction plates 23. It is particularly noteworthy that the heat dissipation plate 23 can come into contact with the test sample 7, thereby achieving the purpose of cooling the test sample 7.

[0050] In this invention, when the staff needs to use this device, the staff can first place the test sample 7 into the placement frame 11. The staff first places one end of the test sample 7 into the placement frame 11, and then pushes the test sample 7. With the assistance of the limiting spring 21, the moving plate 17 can be moved, which in turn can move the conductive needle 19. When the test sample 7 is completely placed in the placement frame 11, the conductive needle 19 will come into contact with the test sample 7, and at the same time, the second conductive plate 18 will come into contact with the first conductive plate 15.

[0051] Then, the operator activates the electric telescopic rod 30 via the controller, bringing the heat sink 22 on the connecting plate 28 into contact with the test sample 7. The operator then activates the water pump 35 via the controller. When the water pump 35 is running, cooling water is supplied from the output pipe 37 into the connecting plate 28. The connecting plate 28 then directs the water into the heat-conducting plate 23. With the assistance of the partition 25, the water flows into one of the heat dissipation fins 24, thus allowing the water to enter the heat dissipation system. In plate 23, the test sample 7 can be cooled. At the same time, the water source will enter the heat dissipation fins 24 on the other side from the heat dissipation plate 23. Then, with the assistance of the guide pipe 26, the water source can enter other heat conduction plates 23, so that the water source can flow back to the connecting plate 28. It is particularly noteworthy that the connecting plate 28 is equipped with a baffle to avoid water flow mixing. This allows the water source to enter the diversion plate 36, and the diversion plate 36 can make the water flow spray out into the water tank 31.

[0052] When the water pump 35 is working, the rotating shaft 43 will rotate, which will cause the second pulley 44 to rotate. With the assistance of the belt 45, the first pulley 41 will rotate, which will cause the rotating rod 40 to rotate, which will cause the fan blade 42 to rotate. At the same time, the stirring blade 46 will rotate, which will cool the cooling liquid and improve the heat dissipation effect of the device.

[0053] Afterwards, the staff supplied current to the test sample 7 through the control panel 3 and the connector 4, while heating the heating block 10. When the chip is powered on, the hot surface can be placed against the hot plate. Power is applied and the hot plate is kept at 120°C by the temperature controller. The chip is powered on with 80% of the maximum voltage and current for 5 minutes, and then powered off for 5 minutes. This is one cycle, and the cycle is repeated 5000 times. Then the TEC is removed and the resistance of the device is measured at 30°C. If the resistance change rate of the device after the resistance test is less than 5%, the chip passes the test.

[0054] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0055] Secondly: The accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other.

[0056] In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A current switching and circulating device, comprising a control cabinet (1), wherein a protective cover (2) is fixedly connected to the upper end of the control cabinet (1), a plurality of control panels (3) are provided on the control cabinet (1), a plurality of electrical contacts (4) are fixedly connected to the control cabinet (1), and a display screen (6) is fixedly connected to the control cabinet (1), characterized in that; A boss heat sink (5) is fixedly connected to the control cabinet (1). A heating assembly is connected to the control cabinet (1). The heating assembly includes a heating block (10). Multiple locking assemblies are connected to the heating assembly. The multiple locking assemblies are respectively connected to multiple electrical contacts (4). Test samples (7) are placed in each of the multiple engagement components, conductive components are connected to each of the multiple engagement components, heat dissipation components are provided above each of the multiple test samples, and partition components are provided in each of the multiple heat dissipation components. A pressing component is connected to the control cabinet (1), the pressing component is connected to the partition component, and a storage component is connected to the control cabinet (1); The storage components are connected to the pressing components respectively, and the storage components are connected to the rotating components; The locking assembly includes a placement frame (11) fixedly connected to the heating block (10). The placement frame (11) has a notch (12) and two shrink holes (13). The placement frame (11) is frame-shaped, and the size of the inner frame of the placement frame (11) is the same as the size of the test sample (7). The conductive assembly includes two insulating sleeves (14) fixedly connected to the side wall of the placement frame (11). Each of the two insulating sleeves (14) is provided with a first conductive plate (15). Each of the two insulating sleeves (15) is connected with a wire (16). The two wires (16) are respectively connected to the connector (4). Each of the two contraction holes (13) is provided with a movable plate (17). Each of the two movable plates (17) is fixedly connected with a second conductive plate (18). Each of the two movable plates (17) is connected with a conductive needle (19). Two limiting rods (20) are fixedly connected to the insulating sleeve (14). One end of each limiting rod (20) passes through the side wall of the moving plate (17) and extends into the interior. Each limiting rod (20) is fitted with a limiting spring (21). The two ends of the two limiting springs (21) are connected to the moving plate (17) and the insulating sleeve (14) respectively.

2. The current switching circulation device according to claim 1, characterized in that: The heating assembly includes a support base (8) fixedly connected to the control cabinet (1), and multiple support columns (9) are fixedly connected to the support base (8), with the same heating block (10) fixedly connected to the multiple support columns (9).

3. The current switching and circulating device according to claim 1, characterized in that: The heat dissipation assembly includes a heat dissipation plate (22) disposed above the test sample (7), a heat conduction plate (23) is fixedly connected to the upper end of the heat dissipation plate (22), and a plurality of symmetrical heat dissipation fins (24) are fixedly connected to the side wall of the heat conduction plate (23).

4. The current switching circulation device according to claim 3, characterized in that: The partition assembly includes a partition (25) fixedly connected to the inner side wall of the heat-conducting plate (23), and multiple guide pipes (26) fixedly connected to the side wall of the heat-conducting plate (23). The connection between the heat-conducting plate (23) and multiple heat dissipation fins (24) is provided with an opening (27).

5. The current switching circulation device according to claim 4, characterized in that: The pressing assembly includes two electric telescopic rods (30) fixedly connected to the control cabinet (1). The upper ends of the two electric telescopic rods (30) are fixedly connected to connecting rods (29). One end of the two connecting rods (29) is fixedly connected to the same connecting plate (28). The connecting plate (29) is connected to two heat-conducting plates (23).

6. The current switching circulation device according to claim 5, characterized in that: The storage component includes a water tank (31) fixedly connected to the control cabinet (1). The water tank (31) has multiple air inlets at its air inlet end and multiple air outlets at its output end. A vertical column (34) is fixedly connected to the bottom of the water tank (31). A water pump (35) is fixedly connected to the top of the vertical column (34). An output pipe (37) is fixedly connected to the output end of the water pump (35). One end of the output pipe (37) is connected to a connecting plate (28). An input pipe (38) is provided through the input end of the water tank (31). One end of the input pipe (38) is connected to the connecting plate (28). A diverter plate (36) is fixedly connected to the top of the water tank (31), and the diverter plate (36) is connected to the input pipe (38).

7. A current switching circulation device according to claim 6, characterized in that: The rotating assembly includes multiple bent rods (39) fixedly connected to the top of the water tank (31). One end of each of the multiple bent rods (39) is rotatably connected to a rotating rod (40). A first pulley (41) is coaxially fixedly connected to the side wall of each of the multiple rotating rods (40). A fan blade (42) is coaxially fixedly connected to the side wall of each of the multiple rotating rods (40). A rotating shaft (43) is fixedly connected to the drive shaft of the water pump (35). Multiple second pulleys (44) are coaxially fixedly connected to the side wall of the rotating shaft (43). The multiple second pulleys (44) are respectively connected to the multiple first pulleys (41) through multiple belts (45). An agitator (46) is coaxially fixedly connected to the side wall of the rotating shaft (43).

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