Electric heating constant temperature water bath kettle with water liquid convenient to replace

Abstract

The present application relates to the technical field of electric heating constant temperature water bath, disclose a kind of electric heating constant temperature water bath for replacing water liquid, comprising: kettle body, with electric heating wire and groove plate, groove plate distribution has liquid inlet hole, drain pipe, one end is fixedly installed on kettle body;Replacement box is provided with containing cavity, replacement box and the other end of drain pipe are rotatably connected, replacement box is opened with first through-hole;When replacement box is in initial state, the bottom surface in replacement box and the bottom surface in kettle body are flush, first through-hole is located on the side wall in the height direction of replacement box body;Replacement box is rotated to first rotating state, the bottom surface of containing cavity is lower than the bottom surface of containing groove, first through-hole is located at the highest point of replacement box;When replacement box is rotated to second rotating state, kettle body is drained through first through-hole;Floating plate and liquid inlet hole are one-to-one corresponding, when replacement box is rotated to first rotating state, floating plate blocks liquid inlet hole.The present application can replace water liquid safely during experiment.

Description

Technical Field

[0001] This invention relates to the technical field of electric thermostatic water baths, and in particular to an electric thermostatic water bath that facilitates water replacement. Background Technology

[0002] An electric thermostatic water bath is a common piece of equipment in laboratories for operations such as constant temperature heating, distillation, and concentration. Its structure includes a pot body with a containment tank, an electric heating element installed at the bottom of the pot body, and a trough plate with multiple through holes above the heating element. Water is poured into the pot body, and the electric heating element heats the water to a set temperature and maintains it at a constant temperature. Containers to be heated (such as beakers, test tubes, etc.) are placed on the trough plate and indirectly heated through the water bath.

[0003] When it's necessary to change the water in the pot, the drainage process of traditional water baths is quite cumbersome. Although some water baths are equipped with drain outlets, the outlets are usually in fixed locations and require connecting a drain pipe or using a container to collect the water, making the operation inflexible. If hot or cold water needs to be added to the pot to quickly adjust the water temperature, it can usually only be done through the opening at the top of the pot. When the heating temperature is high, directly opening the lid to add water will cause a large amount of hot steam to rush out instantly, which can easily cause burns to the operator's hands and face, and can also easily cause drastic fluctuations in water temperature. Summary of the Invention

[0004] In order to enable the replacement of water during the operation of an electric thermostatic water bath while ensuring operational safety, this invention provides an electric thermostatic water bath that facilitates water replacement.

[0005] This invention provides an electrically heated constant-temperature water bath that facilitates water replacement, employing the following technical solution: An electric thermostatic water bath with easy-to-change water solution, comprising: The pot body is provided with a receiving groove, in which an electric heating wire and a groove plate are installed. The groove plate is provided with liquid inlet holes and is located above the electric heating wire. A drain pipe is fixedly installed at one end on the pot body, and a valve is installed on the drain pipe; The replacement box is provided with a receiving cavity. The other end of the replacement box and the drain pipe are rotatably connected. A first through hole is opened through the side wall of the replacement box in the height direction. When the replacement box is in its initial state, the bottom surface of the receiving cavity of the replacement box is flush with the bottom surface of the receiving groove, and the first through hole is located on the side wall of the replacement box in the height direction. The displacement box is connected to the pot body through the drain pipe. The displacement box is rotated to the first rotation state with the drain pipe as the rotation center. The bottom surface of the receiving cavity is lower than the bottom surface of the receiving tank, and the first through hole is higher than the liquid surface. When the replacement box rotates to the second rotation state with the drain pipe as the rotation center, the pot body drains through the first through hole; A float plate is located above the trough plate, and the float plate corresponds one-to-one with the liquid inlet. A connecting rod is slidably connected to the trough plate, and the connecting rod is fixedly connected to the float plate. When the displacement box rotates to the first rotation state, the float plate blocks the liquid inlet.

[0006] By adopting the above technical solution, when the boiler is working, opening the valve can connect the boiler and the replacement tank, making the liquid levels in the replacement tank and the boiler equal and the water temperature the same. If the valve is closed at this time, water can be drained through the replacement tank, or hot or cold water can be added to the replacement tank and then the valve can be opened to change the water volume and water temperature in the boiler. Therefore, during the operation of the electric thermostatic water bath, the operation of changing the water through the replacement tank greatly improves the personal safety of the operator. During operation, the boiler body and the replacement tank are connected. When the heating container needs to be replaced, the operator first rotates the replacement tank to its first rotation state, where the bottom of the receiving cavity is lower than the bottom of the receiving tank. A portion of the hot water in the boiler body will automatically flow into the replacement tank due to the height difference. Through pre-calculated water volume, the liquid level in the boiler body is controlled to drop below the tank plate. The container to be replaced (such as a beaker) is then removed from the hot water, and the float plate falls accordingly, sealing the inlet hole and temporarily blocking water vapor. The operator can then directly and safely remove and place the container without needing to... Power off or wait for cooling; since the heating wire is covered by the tank plate and the water level is still higher than the heating wire (achieved by controlling the liquid level in the displacement tank to be higher than the heating wire, and correspondingly the liquid level in the pot is also higher than the heating wire), the heating wire can continue to work to maintain the water temperature; after the container is removed and placed, the displacement tank is rotated back to its initial state, the water will automatically flow back into the pot, the float will be raised by the water, the liquid inlet is opened, the liquid level is restored, and the container in the pot begins to be heated; this solves the problem of safely removing and placing containers under conditions of uninterrupted power supply, further improving experimental efficiency and operational safety.

[0007] Optionally, one side of the displacement tank has an opening. In the initial state, the opening faces upward. A sealing plate that blocks the opening is slidably installed inside the displacement tank. The sealing plate has a second through hole. When the displacement tank rotates to the first rotation state, the second through hole is higher than the liquid level.

[0008] By adopting the above technical solution, the actual usable volume of the displacement tank cavity can be changed by sliding the sealing plate. When the initial liquid level in the pot is too high, after water is discharged at the angle set in the first rotation state, the liquid level in the pot may still be higher than the expected height. The float plate does not block the liquid inlet hole. At this time, the sealing plate can be slid outward to increase the volume of the displacement tank, thereby "drawing" more water from the pot and further accurately lowering the liquid level in the pot to ensure that it drops to the ideal safe position. The reverse is also true. The second through hole is higher than the liquid level in the second rotation state, ensuring that the inside of the displacement tank is connected to the atmosphere.

[0009] Optionally, the displacement box is detachably equipped with a movable box, which slides into the displacement box through an opening. The outer wall of the movable box slides in contact with the inner wall of the receiving cavity. A water bucket is rotatably mounted on the movable box, and the water bucket is connected to a connecting pipe. The sealing plate has a threaded hole, and a plug block is detachably installed on the sealing plate to block the threaded hole. When the connecting pipe and the sealing plate are threadedly connected, the displacement box and the water bucket are connected through the connecting pipe. A third through hole is opened at the end of the water bucket away from the connecting pipe. When the displacement box is rotated to the first rotation state, the third through hole is higher than the liquid level.

[0010] By adopting the above technical solution, when the liquid level in the pot is too high and more water needs to be drained from the pot, the volume of the displacement tank itself may not be enough. A movable box with a water bucket can be installed inside. Through a connecting pipe, the internal space of the water bucket is connected to the receiving cavity of the displacement tank, which is equivalent to greatly increasing the usable volume of the displacement tank. When rotated to the first rotation state, more water will flow into the displacement tank and the water bucket, causing the liquid level in the pot to drop more, thus improving the applicability and flexibility of the equipment. The third through hole is higher than the liquid level in the first rotation state, which also plays a role in balancing the air pressure during drainage.

[0011] Optionally, the water bucket is provided with a sealing rod, one end of which is inserted into the connecting pipe, and the other end of which is detachably connected to the water bucket. A plug is detachably installed in the third through hole.

[0012] By adopting the above technical solution, when the displacement box is in the first rotating state, the water level in the displacement box and the boiler is low. When the movable box and the water bucket are outside the displacement box, after filling the water bucket with water, the connecting pipe and the third through hole are sealed. When the movable box and the water bucket are connected to the displacement box, the connecting pipe is first sealed with the sealing rod, and the movable box and the displacement box slide into the displacement box. The outer wall of the connecting pipe and the sealing plate are then threadedly connected. The connecting pipe extends into the receiving cavity. First, the sealing rod is removed to allow water to flow into the displacement box, and then the plug is removed to realize the function of adding water from the movable box to the displacement box, thereby increasing the liquid level in the boiler. When the displacement tank is in the first rotating state, the water level in the displacement tank and the boiler is too high. Slide the empty water bucket and the movable box into the displacement tank. After the water bucket and the displacement tank are connected, the water in the displacement tank is partially discharged into the movable box. Then, seal the connecting pipe and the third through hole of the movable box. Finally, remove the movable box from the displacement tank to lower the liquid level in the boiler. In its initial state, the displacement tank is equipped with a movable box and a water tank. When the operator discovers that the liquid level in the boiler has fallen below the tank plate due to evaporation or accidental drop without interrupting power, there is no need to stop the machine to add water. The plug blocks the third through hole, and the connecting pipe is sealed with a sealing rod. The movable box, water tank, and displacement tank form a relatively sealed container. When the movable box and water tank slide down, the movable box abuts against the sealing plate. When the movable box, water tank, and sealing plate slide together, they act like a large piston, occupying the space inside the displacement tank and applying pressure to the water in the sealed space. This pressure acts on the water inside the displacement tank and pushes it back into the boiler body, thereby achieving emergency water replenishment. Temporarily stored hot water can be reinjected into the boiler body without interrupting heating or adding water from the outside, maintaining or restoring the safe water level required for heating.

[0013] Optionally, a fourth through hole is provided on the end face of the bucket connected to the connecting pipe. The fourth through hole and the third through hole are coaxial. When the movable box abuts against the sealing plate, the second through hole is blocked.

[0014] By adopting the above technical solution, when the replacement box rotates to the first rotation state, the second through hole is higher than the liquid level. While keeping the connecting pipe and the sealing plate connected, the water bucket is rotated appropriately so that the third through hole is higher than the liquid level. The sliding movable box leaves a gap between the movable box and the sealing plate. The water in the replacement box through the third through hole is discharged into the movable box through the connecting pipe. The second through hole and the fourth through hole are connected. This channel can be used as an additional vent.

[0015] Optionally, a guide rod is fixedly connected to the side of the sealing plate opposite to the water bucket, and the block is slidably installed on the guide rod. An elastic element is installed on the guide rod to drive the block to always have a tendency to fit against the sealing plate. After the connecting pipe and the sealing plate are connected, the connecting pipe drives the block away from the sealing plate. The outer wall of the connecting pipe between the sealing plate and the block has a perforation.

[0016] By adopting the above technical solution, when the connecting pipe and the sealing plate are connected, the plug is pushed away from the sealing plate, and the water in the replacement tank flows into the movable box through the perforation of the connecting pipe. When the connecting pipe leaves the sealing plate, the plug is automatically sealed by the elastic element.

[0017] Optionally, a rotating ring is fixedly connected to the outer wall of the replacement box, and the rotating ring is inserted into the drain pipe.

[0018] By adopting the above technical solution, it is ensured that the replacement box can rotate freely and smoothly around the central axis of the drain pipe, while also providing sufficient support.

[0019] Optionally, a corrugated pipe is coaxially installed inside the drain pipe, through which drainage is carried out. One end of the corrugated pipe is fixed to the replacement box. When the rotating ring and the drain pipe are connected, the corrugated pipe is housed inside the drain pipe. When the rotating ring leaves the drain pipe, the corrugated pipe extends out of the drain pipe.

[0020] By adopting the above technical solution, when the replacement box needs to drain, the rotating ring can be pulled away from the drain pipe, and the corrugated pipe part can be extended, which can increase the flexibility of the replacement box position and enhance the portability and usage scenarios of the replacement box.

[0021] Optionally, a baffle is also installed inside the pot. The baffle is located above the trough plate and has a gap between it and the liquid surface inside the pot. The baffle has a through groove for the container to pass through. Baffles are installed on opposite sides of the baffle by torsion springs. In the natural state of the torsion springs, the two baffles block the through groove. When the container passes through the through groove, it presses down on the baffles, and the baffles abut against the outer wall of the container. The torsion spring is in a compressed state.

[0022] By adopting the above technical solution, when a beaker or other container is placed into water through the channel, the two baffles that originally blocked the channel are pressed down and, under the elastic force of the torsion spring, are always tightly clamped to the outer wall of the container. The elastic force of the torsion spring can adaptively adjust the opening and closing angle of the baffles, so that when containers of different diameters pass through, the baffles can fit tightly against their outer walls and fix the containers. When the containers leave, the baffles can also cover the steam.

[0023] In summary, the present invention has at least one of the following beneficial effects: 1. By rotating the displacement tank to its first rotational state (horizontal or slightly tilted downwards), the hot water in the pot automatically flows into the displacement tank using the principle of communicating vessels, thereby lowering the liquid level in the pot below the trough plate. This causes the container to detach from the hot water, and the inlet hole on the trough plate is automatically blocked by the float plate that descends with the liquid level. The electric heating wire can continue to work to maintain the water temperature, while preventing a large amount of heat from escaping. The operator can directly pick up and put down the container. After completion, the displacement tank is rotated back to its initial state, the hot water automatically flows back, and the container continues to be heated. The entire process does not require power outages, waiting for cooling or reheating, greatly shortening the operation waiting time and eliminating the risk of high-temperature burns. 2. Adjust the amount of water discharged from the pot by sliding the sealing plate or installing the movable box. When the liquid level in the pot is unexpectedly too low, the displacement box is sealed by the sealing rod and the plug. Then, the piston movement of the movable box can push the stored hot water back into the pot, and restore the safe water level in an emergency without interrupting heating. Attached Figure Description

[0024] Figure 1 This is an exploded view of the overall structure of Embodiment 1 of the present invention; Figure 2 This is a cross-sectional view of the overall structure of Embodiment 1 of the present invention; Figure 3 yes Figure 2 Enlarged schematic diagram of point A; Figure 4 This is a schematic diagram showing the location of the first through hole in the replacement box; Figure 5 This is a schematic diagram illustrating the displacement box in its first rotational state; Figure 6 This is a cross-sectional view of the groove plate and partition plate installed inside the pot body according to Embodiment 1 of the present invention; Figure 7 This is a structural diagram illustrating the partition; Figure 8 This is a schematic diagram of the displacement box structure in Embodiment 2 of the present invention; Figure 9 This is a schematic diagram of the connection between the replacement box and the movable box in Embodiment 2 of the present invention; Figure 10 This is a cross-sectional schematic diagram of the connection between the replacement box and the movable box in Embodiment 2 of the present invention; Figure 11 yes Figure 10 Enlarged view of point B; Figure 12 This is a schematic diagram of the replacement box and the movable box in the first rotational state after being connected in Embodiment 2 of the present invention; Figure 13 This is a schematic diagram illustrating how the plugging rod blocks the connecting pipe.

[0025] Explanation of reference numerals in the attached drawings: 100, Pot body; 101, Pot lid; 102, Receiving groove; 110, Electric heating wire; 120, Groove plate; 121, Liquid inlet; 122, Limiting rod; 130, Drain pipe; 131, Valve; 140, Bellows; 200, Displacement box; 201, Receiving cavity; 210, Rotary ring; 220, First through hole; 230, Opening; 240, Sealing plate; 241, Second through hole; 242, Thread. 243. Hole; 244. Guide rod; 245. Block; 246. Fixing block; 247. Compression spring; 300. Float; 310. Connecting rod; 320. Limiting block; 400. Partition; 410. Through groove; 420. Torsion spring; 430. Baffle; 500. Movable box; 600. Bucket; 610. Connecting pipe; 611. Perforation; 612. Third through hole; 613. Fourth through hole; 614. Plug; 700. Sealing rod. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1 -Appendix Figure 13 The present invention will be described in further detail below.

[0027] This invention discloses an electric thermostatic water bath that facilitates water replacement.

[0028] Example 1: Refer to Figure 1 An electric thermostatic water bath with easy-to-change water solution includes a bath body 100, which is the main body of the device. The bath body 100 is covered with a lid 101, and an internal receiving groove 102 is provided for holding heating water. An electric heating wire 110 is installed at the bottom of the receiving groove 102 for heating the water solution. A trough plate 120 is installed inside the bath body 100, and multiple liquid inlet holes 121 are evenly distributed on the trough plate 120. The temperature control and anti-dry-burning principle of this invention are not improved, as they are existing technologies, and will not be described in detail here.

[0029] Reference Figure 2 The slot plate 120 is always positioned above the electric heating wire 110, with a gap between them. The slot plate 120 supports the container and prevents the container from contacting the electric heating wire 110. A drain hole is provided on the side wall of the pot body 100 at the bottom of the receiving slot 102 to drain water from the pot body 100. The drain hole of the pot body 100 is connected to a drain pipe 130, and a valve 131 is installed on the drain pipe 130 to control the flow of water.

[0030] Reference Figure 2 A displacement box 200 is rotatably connected to the outlet end of the drain pipe 130. The displacement box 200 is a box structure with an internal receiving cavity 201, and is rotatably connected to the drain pipe 130 via a rotating ring 210. The rotating ring 210 is rotatably inserted into the end of the drain pipe 130, allowing the displacement box 200 to rotate about the drain pipe 130 as its axis. There is a certain friction between the rotating ring 210 and the drain pipe 130, and the displacement box 200 remains stationary without any artificial force applied.

[0031] Reference Figure 3A corrugated pipe 140 is coaxially and sealed at the outlet end of the drain pipe 130. One end of the corrugated pipe 140 is fixed to the displacement box 200 and communicates with the receiving cavity 201 of the displacement box 200, thus connecting the pot body 100 and the displacement box 200. When the rotating ring 210 is normally inserted into the drain pipe 130, the corrugated pipe 140 is compressed and housed inside the drain pipe 130. When the operator pulls the rotating ring 210 out of the drain pipe 130, part of the corrugated pipe 140 extends out of the drain pipe 130, forming a flexible water guiding channel. The displacement box 200 can be appropriately moved away from the pot body 100 and rotated at different angles to facilitate the drainage of water from the displacement box 200. When the displacement box 200 is rotatably connected to the drain pipe 130 via the rotating ring 210, the corrugated pipe 140 deforms appropriately.

[0032] Reference Figure 4 The displacement chamber 200 has a first through hole 220 on the top of its side wall in the height direction, which is used to balance the air pressure inside and outside the chamber during drainage or water intake. The bottom of the displacement chamber 200 has an arc-shaped structure, which is tangent to the experimental platform.

[0033] This embodiment achieves different functions by changing the rotation state of the displacement box 200.

[0034] Reference Figure 2 In the initial state, the bottom surface of the receiving cavity 201 of the displacement tank 200 is flush with the bottom surface of the receiving groove 102 of the pot body 100, and the first through hole 220 is located at the top of the side wall of the tank body. When the valve 131 is opened, the displacement tank 200 and the pot body 100 are in a connected state, and the liquid levels are flush. The displacement tank 200 can be made of transparent acrylic sheet material for easy observation of the water level.

[0035] When the boiler body 100 is in operation, opening valve 131 connects the boiler body 100 to the initial displacement tank 200, making the liquid levels in the displacement tank 200 and the water temperature in the boiler body 100 equal. If valve 131 is closed at this time, the water in the displacement tank 200 can be drained separately, draining water from the boiler body 100 through the displacement tank 200. Alternatively, hot or cold water can be added to the displacement tank 200 before opening valve 131 to change the water volume and temperature in the boiler body 100. Therefore, during the operation of the electric thermostatic water bath, the operation of adding or draining water through the displacement tank 200 greatly improves the personal safety of the operators.

[0036] Reference Figure 5 and Figure 6When the operator needs to temporarily lower the liquid level inside the pot 100 to safely place or remove containers, the displacement tank 200 can be rotated downwards around the drain pipe 130 to the first rotation state. The downward rotation angle is at least 90°, and the vertical side of the displacement tank 200 is rotated to a horizontal state and in contact with the experimental platform. At this time, the first through hole 220 faces upwards and is always higher than the liquid level to ensure smooth venting. The bottom surface of the receiving cavity 201 of the displacement tank 200 is lower than the bottom surface of the receiving groove 102 of the pot 100. Due to the principle of communicating vessels, the hot water in the pot 100 will automatically partially drain into the displacement tank 200 until the two liquid levels are equal. By designing the internal volume and rotation angle of the displacement tank 200, the liquid level inside the displacement tank 200 is controlled between the groove plate 120 and the electric heating wire 110, thereby ensuring that the remaining liquid level in the pot 100 is still higher than the electric heating wire 110, achieving continuous electric heating.

[0037] When it is necessary to completely drain the water from the pot body 100, pull the rotating ring 210 out of the drain pipe 130, with the corrugated pipe 140 extending beyond the drain pipe 130, so that the displacement box 200 is removed from the experimental platform. Without being restricted by the experimental platform, continue rotating the displacement box 200 to a second rotation state (such as a large tilt or inversion), allowing water to flow out from the first through hole 220. An extended drain pipe 130 can be inserted into the first through hole 220 to drain water into a water tank.

[0038] Reference Figure 6 Multiple floats 300 are arranged above the tank plate 120, and these floats 300 correspond one-to-one with the liquid inlet holes 121 on the tank plate 120. Each float 300 is fixedly connected to a connecting rod 310, which slides through the tank plate 120. A limit rod 122 is provided on the inner wall of the tank plate 120 at the liquid inlet hole 121. The limit rod 122 does not affect the passage of water through the liquid inlet hole 121. The connecting rod 310 passes through the limit rod 122 and slides up and down along the limit rod 122. The lower end of the connecting rod 310 is connected to a limit block 320, which restricts the float 300 from leaving the tank plate 120. The limit block 320 and the electric heating wire 110 do not interfere with each other. When the displacement tank 200 rotates to the first rotation state, the liquid level in the pot body 100 drops to between the tank plate 120 and the electric heating wire 110, while the electric heating wire 110 remains submerged in water. The float plate 300 falls synchronously with the liquid level and adheres to the upper surface of the tank plate 120, sealing the corresponding liquid inlet hole 121. This forms a heat insulation layer above the electric heating wire 110, reducing heat loss and preventing excessive water vapor from escaping, thus facilitating the operator's handling of the container. When the water flows back and the liquid level rises, the float plate 300 is lifted again, reopening the liquid inlet hole 121 and resuming normal heating circulation.

[0039] Reference Figure 6 and Figure 7A baffle 400 is also installed inside the pot body 100. This baffle 400 is horizontally positioned above the trough plate 120, maintaining a certain distance from the normal liquid level inside the pot body 100. A through-slot 410 is provided in the middle of the baffle 400 for containers such as beakers and test tubes to pass through. Two baffles 430 are rotatably installed on opposite sides of the through-slot 410 via a torsion spring 420 and a rotating shaft. In the natural state of the torsion spring 420, the two baffles 430 are closed relative to each other, jointly sealing the entire through-slot 410. When the operator lowers a container through the through-slot 410 into the water, the container presses down on the two baffles 430, causing them to overcome the elastic force of the torsion spring 420 and flip open to the sides. At this time, the restoring force generated by the compressed torsion spring 420 ensures that the two baffles 430 remain tightly pressed against the outer wall of the container, thus clamping and fixing the container and preventing it from shaking during heating. Once the container is removed, the torsion spring 420 returns to its original position, and the two baffles 430 close again, covering the through slot 410, effectively reducing the escape of water vapor and further protecting the operator's hands from steam burns.

[0040] In summary, Example 1, through a rotatable and separable replacement tank 200, a float 300 that rises and falls with the liquid level, and a partition 400 with a self-closing baffle 430, achieves the functions of conveniently discharging or adding hot water and safely placing and removing containers with minimal power interruption.

[0041] Example 2: Based on Example 1, this example further refines the structure of the replacement tank 200 to provide more flexible water volume adjustment and stronger emergency handling capabilities. It also includes the basic structures such as the boiler body 100, drain pipe 130, replacement tank 200, float plate 300, and partition plate 400. The parts identical to those in Example 1 will not be repeated here; the focus is on describing their distinguishing features.

[0042] Reference Figure 8 One side of the displacement tank 200 has an opening 230, which faces upwards in the initial state. A sealing plate 240 is slidably installed inside the displacement tank 200 to seal the opening 230. A sealing ring is fitted around the periphery of the sealing plate 240, and the sealing ring fits tightly against the inner wall of the displacement tank 200. The effective volume of the receiving cavity 201 of the displacement tank 200 can be changed by sliding the sealing plate 240. The sealing plate 240 has a second through hole 241, which is close to the side wall with the first through hole 220, and the first through hole 220 and the second through hole 241 are axially opposite. When the displacement tank 200 rotates to its first rotation state, the second through hole 241 must remain above the liquid level to balance the air pressure, and the displacement tank 200 serves as a temporary storage unit, preventing water leakage.

[0043] Reference Figure 9 and Figure 10To further expand the water storage capacity, this embodiment also includes a detachable movable box 500. The movable box 500 can slide into the receiving cavity 201 of the replacement box 200 through the opening 230, and the outer wall of the movable box 500 slides in contact with the inner wall of the receiving cavity 201, forming a piston-like engagement. The movable box 500 is hollow with openings 230 at both ends. A water bucket 600 is rotatably mounted inside the movable box 500. The water bucket 600 has a circular cross-section, and its outer wall is completely fitted to the inner wall of the movable box 500. The movable box 500 and the water bucket 600 can be directly separated along the axial direction, and there is a certain amount of friction between them, preventing them from easily separating under normal circumstances. A connecting pipe 610 is fixedly connected to one axial end of the water bucket 600. The movable box 500 and the water bucket 600 can also be made of transparent, high-temperature resistant plastic.

[0044] Reference Figure 11 A threaded hole 242 is provided in the middle of the sealing plate 240. Multiple guide rods 243 are connected to the side of the sealing plate 240 near the receiving cavity 201. A plug 244 for sealing the threaded hole 242 is slidably installed between the guide rods 243. A fixing block 245 is connected to the end of each guide rod 243 away from the sealing plate 240. An elastic element, a compression spring 246, is installed on the fixing block 245. One end of the spring abuts against the plug 244, and the elastic element always drives the plug 244 to tend to conform to the sealing plate 240 to seal the threaded hole 242. When the replacement box 200 is not equipped with the movable box 500, the plug 244 seals the threaded hole 242.

[0045] Reference Figure 11 When the connecting pipe 610 is threadedly connected to the sealing plate 240, the front end of the connecting pipe 610 pushes against the blocking block 244, causing it to overcome the force of the elastic element and move away from the sealing plate 240 along the guide rod 243, thereby opening the connecting channel. The outer wall of the connecting pipe 610 has perforations 611, with 2-3 perforations 611 arranged circumferentially along the connecting pipe 610. At this time, the perforations 611 on the outer wall of the connecting pipe 610 are located precisely in the area between the sealing plate 240 and the blocking block 244, ensuring that water in the replacement tank 200 can flow into the connecting pipe 610 through the perforations 611 and then into the water tank 600.

[0046] After the displacement tank 200 and the water tank 600 are connected, the receiving cavity 201 of the displacement tank 200 is connected to the internal space of the water tank 600 through the connecting pipe 610, thereby greatly increasing the total water storage capacity of the system. The movable box 500 blocks the gap between the outer wall of the water tank 600 and the inner wall of the displacement tank 200, so that water in the displacement tank 200 can only enter the water tank 600. The end face of the movable box 500 abuts against the sealing plate 240 and blocks the second through hole 241 on the sealing plate 240. A third through hole 612 is opened at the end of the water tank 600 away from the connecting pipe 610. When the displacement tank 200 rotates to the second rotation state, the water tank 600 needs to be rotated appropriately to keep the third through hole 612 above the liquid level in order to balance the air pressure in the expansion mode.

[0047] Reference Figure 12 The end face of the water bucket 600 connected to the connecting pipe 610 is also provided with a fourth through hole 613, which is coaxial with the third through hole 612 and has the same diameter. When the movable box 500 is installed in place and abuts against the sealing plate 240, the second through hole 241 on the sealing plate 240 is blocked by the end face of the movable box 500. When the replacement box 200 rotates to the first rotation state, and the water bucket 600 and the sealing plate 240 are connected, by appropriately rotating the water bucket 600, both the third through hole 612 and the fourth through hole 613 are higher than the liquid level, and the movable box 500 is slid, so that the movable box 500 no longer blocks the second through hole 241. The second through hole 241 and the fourth through hole 613 are connected, forming an additional gas-liquid channel, which can be used as an auxiliary exhaust or return path in a non-sealed state.

[0048] Reference Figure 12 and Figure 13 A sealing rod 700 is coaxially inserted through the water bucket 600. One end of the sealing rod 700 can be inserted into the connecting pipe 610 and sealed, while the other end is detachably connected to the end face of the water bucket 600 via a threaded connection. A plug 614 is detachably installed on the third through hole 612, which can be a sealed insertion connection.

[0049] Reference Figure 13 In its initial state, the displacement box 200 is connected to the movable box 500, but the third through hole 612 and the connecting pipe 610 of the movable box 500 are in a connected state. The displacement box 200 is connected to the pot body 100. When the liquid level in the pot body 100 drops to the point where the electric heating wire 110 is about to be exposed, the third through hole 612 is blocked with a plug 614 and the connecting pipe 610 is sealed with a sealing rod 700, so that the movable box 500, the water bucket 600 and the displacement box 200 together form a sealed container. Pushing the movable box 500, the water bucket 600 and the sealing plate 240 downwards acts like a piston, applying pressure to the water in the sealed space and reducing the water's volume. This allows the water in the displacement box 200 to be pushed back into the pot body 100 through the drain pipe 130, achieving emergency water replenishment and ensuring that the liquid level is always higher than the heating wire.

[0050] The displacement tank 200 is connected to the connecting pipe 610. The movable tank 500 is also filled with water. The third through hole 612 is blocked with a stopper 614, and the connecting pipe 610 is sealed with a sealing rod 700. Then, the movable tank 500 and the water bucket 600 are moved out of the displacement tank 200, which can reduce the amount of water stored in the displacement tank 200. After changing the container, the displacement tank 200 is rotated back to the initial state. When the water is returned, the amount of water returned is reduced to accommodate larger containers, so that the liquid level in the pot 100 can be controlled.

[0051] Alternatively, in the initial state or the first rotation state of the replacement tank 200, a bucket 600 containing hot or cold water can be horizontally slid into the replacement tank 200 through the movable box 500. The movable box 500 first blocks the second through hole 241, rotates the bucket 600 to connect the connecting pipe 610 and the replacement tank 200, then rotates the sealing rod 700 to open the connecting hole and pulls out the plug 614 to increase the water volume in the replacement tank 200. It can also change the water temperature in the replacement tank 200 and the pot body 100.

[0052] If the movable box 500 and the water-filled bucket 600 are installed in the first rotating state, after the container is changed, the displacement box 200 is rotated back to the initial state. When the water is returned, the amount of water returned increases to accommodate the smaller container, so that the liquid level in the pot 100 can be controlled.

[0053] In summary, by introducing a sliding sealing plate 240, an expandable movable box 500 and a water bucket 600, as well as a sealing rod 700 and a plug 614, Embodiment 2 not only achieves flexible expansion of the water storage capacity, but also endows the equipment with functions such as active pressurization and water replenishment, and control of the water level in the pot 100, which greatly improves the adaptability of the equipment in complex experimental scenarios and the precision of operation.

[0054] The two embodiments above demonstrate the inventive concept of the present invention from different perspectives, and both can achieve the purpose of conveniently changing the water and safely handling the container without interrupting power.

[0055] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An electric thermostatic water bath with easily replaceable water, characterized in that, include: The pot body (100) is provided with a receiving groove (102), in which an electric heating wire (110) and a trough plate (120) are installed. The trough plate (120) is provided with liquid inlet holes (121), and the trough plate (120) is located above the electric heating wire (110). A drain pipe (130) is fixedly installed at one end on the pot body (100), and a valve (131) is installed on the drain pipe (130). The replacement box (200) is provided with a receiving cavity (201). The other end of the replacement box (200) and the drain pipe (130) are rotatably connected. A first through hole (220) is opened through the side wall of the replacement box (200) in the height direction. When the replacement box (200) is in its initial state, the bottom surface of the receiving cavity (201) of the replacement box (200) is flush with the bottom surface of the receiving groove (102), and the first through hole (220) is located on the side wall of the replacement box (200) in the height direction. The displacement box (200) is connected to the pot body (100) through the drain pipe (130). The displacement box (200) is rotated to the first rotation state with the drain pipe (130) as the rotation center. The bottom surface of the receiving cavity (201) is lower than the bottom surface of the receiving tank (102), and the first through hole (220) is higher than the liquid surface. When the replacement box (200) rotates to the second rotation state with the drain pipe (130) as the rotation center, the pot body (100) drains water through the first through hole (220); A float plate (300) is located above the trough plate (120). The float plate (300) and the liquid inlet (121) correspond one-to-one. The trough plate (120) is slidably connected to a connecting rod (310). The connecting rod (310) and the float plate (300) are fixedly connected. When the replacement box (200) rotates to the first rotation state, the float plate (300) blocks the liquid inlet (121).

2. The electric thermostatic water bath with easy-to-change water solution according to claim 1, characterized in that, The displacement tank (200) has an opening (230) on one side. In the initial state, the opening (230) faces upward. A sealing plate (240) is slidably installed inside the displacement tank (200) to block the opening (230). The sealing plate (240) has a second through hole (241). When the displacement tank (200) rotates to the first rotation state, the second through hole (241) is higher than the liquid level.

3. The electric thermostatic water bath with easy-to-change water solution according to claim 2, characterized in that, The replacement box (200) is detachably fitted with a movable box (500). The movable box (500) slides into the replacement box (200) through an opening (230). The outer wall of the movable box (500) and the inner wall of the receiving cavity (201) slide in contact. A water bucket (600) is rotatably mounted on the movable box (500). The water bucket (600) is connected to a connecting pipe (610). The sealing plate (240) has a threaded hole (242). The sealing plate (240) can be... When the plug block (244) that seals the threaded hole (242) is disassembled and installed, and the connecting pipe (610) and the sealing plate (240) are threadedly connected, the displacement box (200) and the water bucket (600) are connected through the connecting pipe (610). A third through hole (612) is opened at the end of the water bucket (600) away from the connecting pipe (610). When the displacement box (200) is rotated to the first rotation state, the third through hole (612) is higher than the liquid level.

4. The electric thermostatic water bath with easy-to-change water solution according to claim 3, characterized in that, The bucket (600) is provided with a sealing rod (700), one end of which is inserted into the connecting pipe (610), and the other end of which is detachably connected to the bucket (600). The third through hole (612) is detachably fitted with a plug (614).

5. An electric thermostatic water bath with easily replaceable water solution according to claim 3, characterized in that, The end face of the bucket (600) connected to the connecting pipe (610) is provided with a fourth through hole (613). The fourth through hole (613) and the third through hole (612) are coaxial. When the movable box (500) abuts against the sealing plate (240), the second through hole (241) is blocked.

6. An electric thermostatic water bath with easily replaceable water solution according to claim 3, characterized in that, The sealing plate (240) is fixedly connected to the guide rod (243) on the side facing away from the water bucket (600). The block (244) is slidably installed on the guide rod (243). An elastic element is installed on the guide rod (243) to drive the block (244) to always have a tendency to fit against the sealing plate (240). After the connecting pipe (610) and the sealing plate (240) are connected, the connecting pipe (610) drives the block (244) away from the sealing plate (240). The connecting pipe (610) has a perforation (611) on the outer wall between the sealing plate (240) and the block (244).

7. An electric thermostatic water bath with easily replaceable water solution according to claim 1, characterized in that, A rotating ring (210) is fixedly connected to the outer wall of the replacement box (200), and the rotating ring (210) is inserted into the drain pipe (130).

8. An electric thermostatic water bath with easily replaceable water solution according to claim 7, characterized in that, A corrugated pipe (140) is coaxially installed inside the drain pipe (130) for draining water. One end of the corrugated pipe (140) is fixed to the replacement box (200). When the rotating ring (210) and the drain pipe (130) are connected, the corrugated pipe (140) is housed inside the drain pipe (130). When the rotating ring (210) leaves the drain pipe (130), part of the corrugated pipe (140) extends out of the drain pipe (130).

9. An electric thermostatic water bath with easily replaceable water according to claim 1, characterized in that, A partition (400) is also installed inside the pot body (100). The partition (400) is located above the trough plate (120) and has a gap with the liquid surface inside the pot body (100). The partition (400) has a through groove (410) for the container to pass through. Baffles (430) are rotatably installed on opposite sides of the partition (400) via torsion springs (420). In the natural state, the two baffles (430) block the through groove (410). When the container passes through the through groove (410), it presses down on the baffles (430). The baffles (430) abut against the outer wall of the container, and the torsion springs (420) are in a compressed state.

Images