Electric mixer housing structure with built-in overheat protection

Abstract

The utility model discloses an electric mixer shell structure of built -in overheating protection device, related to mixer technical field, including electric heating stirring jar, the electric heating stirring jar top is equipped with the upper cover, the electric heating stirring jar one side is equipped with the controller, and the electric heating stirring jar is provided with the overheating protection anti -overflow subassembly, the utility model provides technical scheme, through setting overheating protection anti -overflow subassembly, specifically, through laser scattering sensor real -time monitoring the liquid level and bubble state of liquid in electric heating stirring jar, when detecting that liquid is because temperature is too high and leads to bubble expansion close to overflow, can timely feedback to the controller, realizes the early warning of overflow phenomenon, and the hollow cooling plate is cooled simultaneously to the expanded bubble of the top area in the jar, makes it cool, and from the root, inhibits bubble and overexpansion because of high temperature, forms "monitoring - cooling " linkage's anti -overflow mechanism, effectively avoids liquid overflow.

Description

Technical Field

[0001] This utility model relates to the field of stirrer technology, and in particular to an electric stirrer housing structure with a built-in overheat protection device. Background Technology

[0002] Electric mixers are commonly used equipment in laboratories, food processing, chemical production and other fields. They achieve material mixing by driving the mixing shaft to rotate through a motor.

[0003] However, in actual use, liquids are prone to overflow due to excessively high temperatures during heating and stirring, causing bubbles to expand. Existing equipment lacks an effective overflow monitoring and control mechanism, which cannot prevent liquid from overflowing in time, affecting the safety and efficiency of the equipment. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an electric stirrer shell structure with a built-in overheat protection device, so as to solve the problem that in the prior art, liquid is prone to overflow due to excessive temperature during heating and stirring, causing bubbles to expand. The existing equipment lacks an effective anti-overflow monitoring and control mechanism, and cannot prevent liquid from overflowing in time, which affects the safety and efficiency of the equipment.

[0005] In view of this, the present invention provides an electric stirrer housing structure with a built-in overheat protection device, including an electric heating stirring tank, a top cover installed on the top of the electric heating stirring tank, a feed inlet on the top of the top cover, a discharge outlet on one side of the bottom of the electric heating stirring tank, a controller on one side of the electric heating stirring tank, a drive motor fixedly installed on the top of the top cover, a stirring rod installed on the output end of the drive motor, and an overheat protection anti-overflow component provided in the electric heating stirring tank;

[0006] The overheat protection and overflow prevention assembly includes a hollow cooling plate, several through holes, a coolant tank, a supply pipe, a first return pipe, a second return pipe, a cooling module, a liquid pump, and a laser scattering sensor. The hollow cooling plate is fixedly installed between the upper cover and the electrically heated stirring tank. Several through holes are opened in the middle of the hollow cooling plate. The coolant tank is fixedly installed on one side of the electrically heated stirring tank. The liquid pump is fixedly installed on one side of the coolant tank. The supply pipe is fixedly installed between the liquid pump and the hollow cooling plate. One end of the first return pipe is fixedly installed on the other side of the hollow cooling plate. One end of the second return pipe is fixedly installed on one side of the coolant tank. The cooling module is installed between the first return pipe and the second return pipe. The laser scattering sensor is fixedly installed in the middle of the upper cover.

[0007] Optionally, one end of the liquid supply pipe is connected to the interior of the hollow cooling plate, the other end of the liquid supply pipe is connected to the output end of the liquid pump, and the suction end of the liquid pump is connected to the interior of the coolant tank.

[0008] Optionally, one end of the first return pipe is connected to the interior of the hollow cooling plate, and the other end of the second return pipe is connected to the interior of the coolant tank.

[0009] Optionally, the drive motor, liquid pump, and laser scattering sensor are all electrically connected to the controller via wires.

[0010] Optionally, the cooling module includes a heat exchange box, a thermoelectric cooler, heat dissipation fins, and a cooling fan. The heat exchange box is fixedly installed on one side of the coolant tank, the thermoelectric cooler is fixedly installed on one side of the heat exchange box, the heat dissipation fins are fixedly installed on one side of the thermoelectric cooler, and the cooling fan is installed on one side of the heat dissipation fins.

[0011] Optionally, the input end of the heat exchange box is connected to one end of the first reflux pipe, and the output end of the heat exchange box is connected to one end of the second reflux pipe.

[0012] Optionally, the cooling surface of the semiconductor refrigeration chip abuts against one side surface of the heat exchange box, and the heating surface of the semiconductor refrigeration chip abuts against the heat dissipation fins.

[0013] Optionally, both the thermoelectric cooler and the cooling fan are electrically connected to the controller via wires.

[0014] As can be seen from the above technical solutions, the embodiments of this utility model have the following advantages:

[0015] 1. The present invention relates to an electric stirrer housing structure with a built-in overheat protection device. By setting up an overheat protection anti-overflow component, specifically, a laser scattering sensor monitors the liquid level and bubble state in the electric heating stirring tank in real time. When it detects that the liquid is too hot and the bubbles are about to overflow, it can promptly feed back to the controller to realize early warning of the overflow phenomenon. At the same time, it works with a hollow cooling plate to cool down the expanding bubbles in the top area of ​​the tank, thereby inhibiting the excessive expansion of bubbles due to high temperature from the source, forming an "monitoring-cooling" linkage anti-overflow mechanism, effectively preventing liquid from overflowing.

[0016] 2. The electric stirrer shell structure with built-in overheat protection device of this utility model, by setting a cooling module, specifically, setting a heat exchange box as the core area for heat exchange of coolant, and cooperating with the cooling surface of semiconductor cooling chip, can quickly cool down the high temperature coolant flowing back from the hollow cooling plate, ensuring that the coolant entering the coolant tank always maintains a low temperature, maintaining the stable cooling effect of the hollow cooling plate, and ensuring the anti-overflow effect of the equipment.

[0017] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and accompanying drawings. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings:

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is an exploded view of a partial structure of the present invention;

[0021] Figure 3 This is a schematic diagram of one side of the cooling module of this utility model;

[0022] Figure 4 This is a side view of the cooling module of this utility model.

[0023] Explanation of reference numerals in the attached drawings: 1. Electric heating mixing tank; 2. Top cover; 3. Feed inlet; 4. Discharge outlet; 5. Controller; 6. Drive motor; 7. Stirring rod; 801. Hollow cooling plate; 802. Through hole; 803. Coolant tank; 804. Liquid supply pipe; 805. First reflux pipe; 806. Second reflux pipe; 807. Cooling module; 8071. Heat exchange box; 8072. Semiconductor refrigeration chip; 8073. Heat dissipation fins; 8074. Cooling fan; 808. Liquid pump; 809. Laser scattering sensor. Detailed Implementation

[0024] The technical solutions of the present utility model will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present utility model.

[0025] The following describes in detail, with reference to the accompanying drawings, the shell structure of an electric stirrer with a built-in overheat protection device according to an embodiment of the present invention.

[0026] Example 1

[0027] For easier understanding, please refer to Figures 1 to 4 An embodiment of the electric stirrer shell structure with built-in overheat protection device provided by this utility model includes an electric heating stirring tank 1, a top cover 2 installed on the top of the electric heating stirring tank 1, a feed inlet 3 opened on the top of the top cover 2, a discharge outlet 4 opened on one side of the bottom of the electric heating stirring tank 1, a controller 5 provided on one side of the electric heating stirring tank 1, a drive motor 6 fixedly installed on the top of the top cover 2, a stirring rod 7 installed on the output end of the drive motor 6, and an overheat protection anti-overflow component provided in the electric heating stirring tank 1.

[0028] The overheat protection and overflow prevention assembly includes a hollow cooling plate 801, several through holes 802, a coolant tank 803, a supply pipe 804, a first return pipe 805, a second return pipe 806, a cooling module 807, a liquid pump 808, and a laser scattering sensor 809. The hollow cooling plate 801 is fixedly installed between the upper cover 2 and the electrically heated stirring tank 1. Several through holes 802 are formed in the middle of the hollow cooling plate 801. The coolant tank 803 is fixedly installed on one side of the electrically heated stirring tank 1. The liquid pump 808 is fixedly installed on one side of the coolant tank 803. The supply pipe 804 is fixedly installed between the liquid pump 808 and the hollow cooling plate 801. One end of the first return pipe 805 is fixedly installed on the other side of the hollow cooling plate 801. One end of the second return pipe 806 is fixedly installed on one side of the coolant tank 803. The cooling module 807 is installed between the first return pipe 805 and the second return pipe 806. The laser scattering sensor 809 is fixedly installed in the middle of the upper cover 2. One end of the liquid supply pipe 804 is connected to the inside of the hollow cooling plate 801, and the other end of the liquid supply pipe 804 is connected to the output end of the liquid pump 808. The suction end of the liquid pump 808 is connected to the inside of the coolant tank 803. One end of the first return pipe 805 is connected to the inside of the hollow cooling plate 801, and the other end of the second return pipe 806 is connected to the inside of the coolant tank 803. The drive motor 6, the liquid pump 808, and the laser scattering sensor 809 are all electrically connected to the controller 5 by wires.

[0029] The hollow cooling plate 801 is made of corrosion-resistant metal, and its edges are bolted between the lower surface of the upper cover 2 and the top edge of the electrically heated stirring tank 1, forming a complete coverage of the top area inside the tank. Several through holes 802 are evenly distributed in the middle of the hollow cooling plate 801, with the hole diameter matching the diameter of the stirring rod 7. This ensures that the stirring rod 7 can pass through the through holes 802 and enter the electrically heated stirring tank 1 without obstruction. A 1-2mm gap is reserved between the through holes 802 and the stirring rod 7, which neither affects the rotation of the stirring rod 7 nor reduces the leakage of hot air from the tank through the gap. The detection end of the laser scattering sensor 809 passes vertically downward through the upper cover 2, and its detection range covers an area 5-10cm above the liquid surface inside the electrically heated stirring tank 1. By monitoring the change in the intensity of laser scattering by bubbles, it can accurately determine whether the liquid level has risen to the warning position due to boiling. The controller 5 adopts a PLC control system, and its surface is equipped with a touch screen and warning indicator lights, which can display equipment operating parameters and fault information in real time.

[0030] It should be noted that the laser scattering sensor 809 monitors the liquid level and bubble status in the electrically heated stirring tank 1 in real time. When it detects that the liquid is too hot and the bubbles are about to overflow, it can promptly feed back to the controller 5, realizing an early warning of overflow. At the same time, the hollow cooling plate 801 cools the bubbles in the top area of ​​the tank, suppressing the excessive expansion of bubbles due to high temperature from the root, forming a "monitoring-cooling" linkage anti-overflow mechanism, effectively preventing liquid from overflowing. The hollow cooling plate 801 is installed between the top cover 2 and the electrically heated stirring tank 1, and can directly act on the area at the top of the tank where bubbles are prone to overflow. It quickly absorbs heat through the circulating coolant, specifically reducing the liquid temperature in this area. Compared with overall cooling, it is more energy-efficient and has a higher cooling efficiency.

[0031] Example 2

[0032] In some embodiments, such as Figure 3 , Figure 4 As shown, the cooling module 807 includes a heat exchange box 8071, a thermoelectric cooler 8072, heat dissipation fins 8073, and a cooling fan 8074. The heat exchange box 8071 is fixedly installed on one side of the coolant tank 803. The thermoelectric cooler 8072 is fixedly installed on one side of the heat exchange box 8071. The heat dissipation fins 8073 are fixedly installed on one side of the thermoelectric cooler 8072. The cooling fan 8074 is installed on one side of the heat dissipation fins 8073. The input end of the heat exchange box 8071 is connected to one end of the first return pipe 805, and the output end of the heat exchange box 8071 is connected to one end of the second return pipe 806. The cooling surface of the thermoelectric cooler 8072 abuts against one side of the surface of the heat exchange box 8071, and the heating surface of the thermoelectric cooler 8072 abuts against the heat dissipation fins 8073. Both the thermoelectric cooler 8072 and the cooling fan 8074 are electrically connected to the controller 5 via wires.

[0033] It should be noted that the heat exchange box 8071 is equipped with a spiral guide plate inside, which extends the residence time of the coolant in the box and improves heat exchange efficiency. The semiconductor cooling chip 8072 adopts a multi-stage series structure. Its cooling surface is tightly attached to the outer wall of the heat exchange box 8071 with thermally conductive silicone grease, and its heating surface is fixed to the heat dissipation fins 8073 with bolts to ensure rapid heat conduction. The cooling fan 8074 is an axial flow fan, and its air outlet is directly facing the heat dissipation fins 8073 to form a forced air cooling circulation. The heat dissipation fins 8073 are made of aluminum alloy with an anodized surface to enhance heat dissipation performance.

[0034] Working principle: First, the liquid to be stirred is added into the electrically heated stirring tank 1 through the feed port 3 of the top cover 2. After the top cover 2 is closed, the drive motor 6 and the heating function of the electrically heated stirring tank 1 are started by the controller 5. The drive motor 6 drives the stirring rod 7 to rotate, stirring the liquid. At the same time, the electrically heated stirring tank 1 heats the liquid. During this process, the laser scattering sensor 809 continuously monitors the state of the bubbles above the liquid surface in the tank. When the liquid temperature rises to near boiling, the number of bubbles increases and rises to the 5cm warning zone above the liquid surface, the sensor transmits a signal to the controller 5. The controller 5 immediately starts the liquid pump 808 and the cooling module 807. The liquid pump 808 draws low-temperature coolant from the coolant tank 803 and delivers it to the hollow cooling plate 801 through the liquid supply pipe 804. When the coolant flows in the hollow cooling plate 801, it absorbs the heat of the top area of ​​the tank through the metal wall, causing the bubbles that are about to overflow to shrink due to cooling and suppressing liquid overflow. After absorbing heat, the high-temperature coolant flows into the heat exchange tank 8071 through the first return pipe 805. The cooling surface of the thermoelectric cooler 8072 cools the coolant in the heat exchange tank 8071, while the cooling fan 8074 dissipates the heat from the heating surface of the thermoelectric cooler 8072 to the outside through the heat dissipation fins 8073. The cooled coolant flows back to the coolant tank 803 through the second return pipe 806, completing the circulating cooling. When the laser scattering sensor 809 detects that the number of bubbles has decreased to a safe threshold, the controller 5 automatically reduces the power of the liquid pump 808 and the cooling intensity of the thermoelectric cooler 8072 to save energy. After stirring is completed, all equipment is shut down by the controller 5, and the stirred liquid is discharged from the discharge port 4 at the bottom of the electrically heated stirring tank 1.

[0035] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A housing structure for an electric stirrer with a built-in overheat protection device, characterized in that: The electric heating mixing tank (1) includes an electric heating mixing tank (1) with a top cover (2) installed on the top. The top cover (2) has a feed inlet (3) on the top. The bottom side of the electric heating mixing tank (1) has a discharge outlet (4). The electric heating mixing tank (1) has a controller (5) on one side. The top cover (2) has a drive motor (6) fixedly installed on the top. The output end of the drive motor (6) has a stirring rod (7). The electric heating mixing tank (1) is equipped with an overheat protection anti-overflow component. The overheat protection and overflow prevention assembly includes a hollow cooling plate (801), several through holes (802), a coolant tank (803), a supply pipe (804), a first return pipe (805), a second return pipe (806), a cooling module (807), a liquid pump (808), and a laser scattering sensor (809). The hollow cooling plate (801) is fixedly installed between the upper cover (2) and the electrically heated stirring tank (1). Several through holes (802) are opened in the middle of the hollow cooling plate (801). The coolant tank (803) is fixedly installed in the electrically heated stirring tank (1). On one side, the liquid pump (808) is fixedly installed on one side of the coolant tank (803), the liquid supply pipe (804) is fixedly installed between the liquid pump (808) and the hollow cooling plate (801), one end of the first return pipe (805) is fixedly installed on the other side of the hollow cooling plate (801), one end of the second return pipe (806) is fixedly installed on one side of the coolant tank (803), the cooling module (807) is installed between the first return pipe (805) and the second return pipe (806), and the laser scattering sensor (809) is fixedly installed in the middle of the upper cover (2).

2. An electric mixer housing structure with built-in overheat protection according to claim 1, characterized in that: One end of the liquid supply pipe (804) is connected to the interior of the hollow cooling plate (801), and the other end of the liquid supply pipe (804) is connected to the output end of the liquid pump (808). The suction end of the liquid pump (808) is connected to the interior of the coolant tank (803).

3. The electric mixer housing structure with built-in overheat protection device according to claim 1, characterized in that: One end of the first return pipe (805) is connected to the interior of the hollow cooling plate (801), and the other end of the second return pipe (806) is connected to the interior of the coolant tank (803).

4. The electric mixer housing structure with built-in overheat protection device according to claim 1, wherein: The drive motor (6), liquid pump (808) and laser scattering sensor (809) are all electrically connected to the controller (5) via wires.

5. The electric mixer housing structure with built-in overheat protection device according to claim 1, wherein: The cooling module (807) includes a heat exchange box (8071), a thermoelectric cooler (8072), heat dissipation fins (8073), and a cooling fan (8074). The heat exchange box (8071) is fixedly installed on one side of the coolant tank (803), the thermoelectric cooler (8072) is fixedly installed on one side of the heat exchange box (8071), the heat dissipation fins (8073) are fixedly installed on one side of the thermoelectric cooler (8072), and the cooling fan (8074) is installed on one side of the heat dissipation fins (8073).

6. An electric mixer housing structure with built-in overheat protection as claimed in claim 5, wherein: The input end of the heat exchange box (8071) is connected to one end of the first reflux pipe (805), and the output end of the heat exchange box (8071) is connected to one end of the second reflux pipe (806).

7. The electric mixer housing structure with built-in overheat protection device according to claim 5, wherein: The cooling surface of the semiconductor refrigeration chip (8072) abuts against one side surface of the heat exchange box (8071), and the heating surface of the semiconductor refrigeration chip (8072) abuts against the heat dissipation fins (8073).

8. The electric mixer housing structure with built-in overheat protection device according to claim 5, wherein: The semiconductor cooling chip (8072) and the cooling fan (8074) are both electrically connected to the controller (5) via wires.

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