Water-tight device and reaction vessel

Abstract

The utility model discloses a water seal device and reation kettle, water seal device includes: static ring, static ring is equipped with the water storage cavity of upward opening, and the water storage cavity is annular, dynamic ring, including installation portion and closed portion, and the closed portion is annular, and the upper end of closed portion is connected with installation portion, and the lower end of closed portion is inserted in the water storage cavity, water supply structure, including water supply board, water supply groove and float, and water supply board is connected with the upper end of static ring, and is located the outside of closed portion, and water supply board is equipped with the water supply mouth, and the water supply mouth is used for communicating with the water source of external installation, and water supply groove sets up in the water storage cavity and is connected with water supply board, and water supply groove sets up around the outer periphery of water supply mouth, and is equipped with the water supply cavity that communicates with water supply mouth, and the lower part side of water supply groove is equipped with the water inlet, and the water inlet communicates water supply cavity and water storage cavity, and the float sets up in water supply cavity, and is connected with the inner wall of water supply cavity slidingly, when the float floats to the top of water supply cavity, the float blocks water supply mouth. The utility model discloses can realize automatic water supply and water cut.

Description

Technical Field

[0001] This utility model relates to the field of reaction vessel technology, and in particular to a water-sealing device and a reaction vessel. Background Technology

[0002] In the synthesis of cathode material precursors, the reactor is an indispensable piece of equipment. The synthesis of some products requires strict anti-oxidation conditions, making the seal between the stirring rod and the reactor body particularly important.

[0003] However, conventional mechanical seals are expensive and prone to leakage when the agitator rod in the reactor is running at high speed, resulting in high replacement costs. Water-sealing devices in related technologies require regular water replenishment, increasing the workload for operators. Furthermore, the amount of water added is extremely difficult to control; insufficient water fails to form an effective seal, leading to oxidation of the product inside the reactor, while excessive water can cause liquid to overflow and contaminate the environment due to the sloshing of the liquid surface during the rotation of the agitator rod. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a water-sealing device and a reaction vessel.

[0005] The solution to the technical problem of this utility model is: In a first aspect, a water-sealing device is proposed for use in a reaction vessel equipped with a vessel body and a stirring rod, wherein the lower part of the stirring rod is inserted into the vessel body, and the water-sealing device comprises: A stationary ring is used to connect to the vessel body. The stationary ring has an upward-opening water storage cavity, and the water storage cavity is annular. The moving ring includes a mounting part and a sealing part. The mounting part is used to connect with the stirring rod, and the sealing part is ring-shaped. The upper end of the sealing part is connected to the mounting part, and the lower end of the sealing part is inserted into the water storage cavity. The water replenishment structure includes a water replenishment plate, a water replenishment tank, and a float. The water replenishment plate is connected to the upper end of the stationary ring and is located outside the closed part. The water replenishment plate has a water inlet for communicating with an external water source. The water replenishment tank is located in the water storage cavity and is connected to the water replenishment plate. The water replenishment tank is arranged around the outer periphery of the water inlet and has a water replenishment cavity communicating with the water inlet. The lower side of the water replenishment tank has a water inlet that communicates with the water replenishment cavity and the water storage cavity. The float is located in the water replenishment cavity and is slidably connected to the inner wall of the water replenishment cavity. When the float rises to the top of the water replenishment cavity, the float blocks the water inlet.

[0006] This invention has at least the following beneficial effects: When the liquid level in the water storage chamber is not as expected, there is a certain distance between the float and the water inlet. Water is automatically supplied to the water inlet, allowing liquid to enter the water supply chamber through the inlet and the water storage chamber through the inlet, causing the liquid levels in both chambers to rise. When the liquid level reaches a preset position, the float rises to the top of the water supply chamber and blocks the water inlet, preventing liquid from entering the water supply chamber and achieving automatic water shut-off. This design solves the problem of traditional water-sealing devices requiring periodic water replenishment, reducing the workload of personnel and effectively controlling the amount of water replenished, avoiding situations where insufficient water replenishment results in ineffective sealing or excessive water replenishment pollutes the work environment.

[0007] As a further improvement to the above technical solution, the upper end face of the float is an upwardly convex arc surface, and the lower end of the inner wall of the water inlet is provided with a groove, which matches the shape of the arc surface. With this configuration, when the float floats to the top of the water inlet cavity, the upper end face of the float can be inserted into the water inlet, and the arc surface can abut against the groove wall, thereby achieving a more effective liquid cut-off effect.

[0008] As a further improvement to the above technical solution, the water replenishment structure also includes a limiting block, which is connected to the side wall of the float and slidably connected to the inner wall of the water replenishment cavity. The limiting block can limit the up and down movement of the float to ensure that when the float rises to the top of the water replenishment cavity, it can accurately block the water inlet, thereby achieving effective water shut-off.

[0009] As a further improvement to the above technical solution, a drain outlet is provided on the outer wall of the stationary ring. The drain outlet is located at the upper part of the water storage chamber and below the water replenishment plate, and is connected to the water storage chamber. The drain outlet is configured as a remedial measure in case of float failure. When the float malfunctions and the water supply cannot be cut off, excess liquid can be discharged through the drain outlet to a specific location for recycling, preventing liquid from overflowing the stationary ring and contaminating the site.

[0010] As a further improvement to the above technical solution, the water-sealing device also includes a controller, a flow meter, and an alarm. The flow meter is located at the drain outlet, and both the flow meter and the alarm are electrically connected to the controller. The flow meter is used to acquire the liquid flow signal at the drain outlet, and the controller is configured to control the alarm to sound an alarm based on the liquid flow signal. When liquid flows out of the drain outlet, the flow meter acquires the liquid flow signal and transmits it to the controller, which then controls the alarm to sound an alarm, allowing staff to quickly be informed that the float is in a malfunctioning state and to take timely action.

[0011] As a further improvement to the above technical solution, the side of the water replenishment tank is also provided with multiple sets of liquid inlets. These multiple sets of liquid inlets are arranged vertically along the side of the water replenishment tank and are respectively connected to the water replenishment chamber and the water storage chamber. The liquid inlets can assist the water inlet in realizing the liquid flow between the water replenishment chamber and the water storage chamber, ensuring that the liquid levels in the water replenishment chamber and the water storage chamber are consistent, so that the float can sensitively open or close the water replenishment inlet.

[0012] As a further improvement to the above technical solution, a support plate is provided on the top surface of the vessel body, and a support is provided on the outer periphery of the stationary ring. The support is located above the support plate and is detachably connected to the support plate. This arrangement facilitates the separation of the stationary ring from the vessel body, making routine maintenance or replacement of parts easier.

[0013] As a further improvement to the above technical solution, the water-sealing device further includes reinforcing ribs, which are connected to the outer peripheral wall of the stationary ring and the upper surface of the support, respectively. The reinforcing ribs improve the connection strength between the support and the stationary ring, preventing breakage at the connection point and enhancing the stability of the stationary ring installation.

[0014] As a further improvement to the above technical solution, a retaining ring is provided on the outer periphery of the stirring rod, and the mounting part is detachably connected to the upper or lower wall surface of the retaining ring. This arrangement facilitates the separation of the water seal device from the stirring rod, making subsequent routine maintenance or component replacement easier.

[0015] Secondly, a reaction vessel is proposed, including a water-sealing device as described in any of the above technical solutions.

[0016] Because the reactor has the aforementioned water-sealing device, it can effectively seal the reactor body and stirring rod when the reactor is operating at high speed, preventing the product from being oxidized. Moreover, the water-sealing device can automatically replenish and shut off water, solving the problem of traditional water-sealing devices requiring regular water replenishment, reducing the workload of staff, and effectively controlling the amount of water replenished, avoiding situations where insufficient water replenishment fails to achieve effective sealing or excessive water replenishment pollutes the on-site environment.

[0017] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly explained below. Obviously, the described drawings are only a part of the embodiments of this utility model, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the water-sealing device according to an embodiment of the present invention at a high water level; Figure 2 This is a schematic diagram of the water-sealing device according to an embodiment of the present invention at a low water level. Figure 3 This is an installation diagram of the water-sealing device according to an embodiment of the present invention; Figure 4 yes Figure 1 A magnified structural diagram of part A in the middle; Figure 5 yes Figure 2 A magnified structural diagram of part B in the middle section; Figure 6 yes Figure 3 A magnified structural diagram of section C.

[0020] Reference numerals: 100, Moving ring; 110, Enclosed part; 120, Mounting part; 200, Stationary ring; 210, Water storage chamber; 220, Drain outlet; 300, Water replenishment structure; 310, Water replenishment plate; 311, Water replenishment port; 320, Float; 330, Water replenishment tank; 331, Water replenishment chamber; 332, Liquid inlet; 340, Limiting block; 400, Support; 500, Reinforcing rib; 600, Kettle body; 610, Support plate; 700, Stirring rod; 710, Fixing ring. Detailed Implementation

[0021] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0022] In the description of this utility model, the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0024] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0025] Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. The various technical features of this utility model can be combined interactively without contradicting each other.

[0026] Reference Figure 1 , Figure 2 and Figure 3 This utility model proposes a water-sealing device that is applied in a reaction vessel to seal the vessel body 600 and the stirring rod 700. During the reaction process in the reaction vessel, the water-sealing device can prevent the product inside the vessel body 600 from oxidizing, thereby improving the product qualification rate. Moreover, the water-sealing device can automatically replenish and cut off water, avoiding the situation where insufficient water causes seal failure, and also avoiding the situation where excessive water replenishment causes the site environment to be contaminated by spilled liquid.

[0027] The water seal device includes a stationary ring 200, a rotating ring 100, and a water supply structure 300. It is understood that the water seal device is installed at the connection between the stirring rod 700 and the vessel body 600. The lower part of the stirring rod 700 is inserted into the vessel body 600, enabling it to stir the material within the vessel body 600. The stationary ring 200 of the water seal device is used to connect to the vessel body 600, while the rotating ring 100 is connected to the stirring rod 700. The rotating ring 100 can rotate relative to the stationary ring 200 as the stirring rod 700 rotates.

[0028] Specifically, refer to Figure 3 , Figure 4 and Figure 5The stationary ring 200 is provided with a water storage chamber 210, which is annular and opens upwards. The moving ring 100 includes a mounting part 120 and a sealing part 110. The mounting part 120 is used to connect to the outer periphery of the stirring rod 700. The sealing part 110 is annular, with its upper end connected to the mounting part 120 and its lower end inserted into the water storage chamber 210. In use, clean water or other liquid is added to the water storage chamber 210, and the liquid level needs to be higher than the lower end of the sealing part 110. This achieves a water seal between the vessel body 600 and the stirring rod 700. When the stirring rod 700 rotates relative to the vessel body 600, the moving ring 100 rotates with the stirring rod 700 relative to the stationary ring 200, and the sealing part 110 rotates within the water storage chamber 210. The liquid in the water storage chamber 210 maintains the water seal effect between the stirring rod 700 and the vessel body 600.

[0029] It is worth noting that the water replenishment structure 300 includes a water replenishment plate 310, a water replenishment tank 330, and a float 320. Through the water replenishment structure 300, automatic replenishment and automatic shut-off of liquid in the water storage chamber 210 can be achieved. The water replenishment plate 310 is connected to the upper end of the stationary ring 200 and is located outside the closed part 110. A water inlet 311 is provided on the water replenishment plate 310 for connection to a water source. The water replenishment tank 330 is disposed within the water storage chamber 210 and connected to the water replenishment plate 310. The water replenishment tank 330 is arranged around the outer periphery of the water inlet 311 and has a water replenishment chamber 331 communicating with the water inlet 311. A water inlet is provided on the side of the water replenishment tank 330, and the water replenishment chamber 331 and the water storage chamber 210 are connected through the water inlet. The water source supplies liquid to the water inlet 311. The liquid enters the water replenishment chamber 331 through the water inlet 311 and then enters the water storage chamber 210 through the water inlet, thus realizing automatic water replenishment.

[0030] A float 320 is disposed within the water replenishment cavity 331 and is slidably connected to the inner wall of the water replenishment cavity 331. It is understood that after automatic water replenishment, the liquid level in the water storage cavity 210 is equal to the liquid level in the water replenishment cavity 331, allowing the float 320 to rise within the water replenishment cavity 331 under buoyancy. When the float 320 rises to the top of the water replenishment cavity 331, refer to... Figure 4 The float 320 can block the water inlet 311, thereby cutting off the channel for the water source to supply liquid to the water inlet 331 and realizing automatic liquid cut-off.

[0031] By setting up the water replenishment structure 300, the liquid level in the water storage chamber 210 is maintained at an appropriate height, ensuring that the liquid level is neither too low nor too high, thus achieving a good water seal effect and preventing the liquid in the water storage chamber 210 from overflowing and polluting the on-site environment.

[0032] In some embodiments, refer to Figure 4 and Figure 5The upper surface of the float 320 is an upwardly convex arc surface, and the lower end of the inner wall of the water inlet 311 is provided with a groove whose shape matches the arc surface. When the float 320 floats to the top of the water inlet 331, the upper surface of the float 320 can extend into the water inlet 311, and the arc surface abuts against the groove wall, thereby achieving a more effective liquid cut-off effect. In addition, the arc surface design allows the liquid above the float 320 to flow downwards along the arc surface, preventing liquid from accumulating above the float 320.

[0033] In some embodiments, refer to Figure 6 The water replenishment structure 300 also includes a limiting block 340, which is connected to the side wall of the float 320 and slidably connected to the inner wall of the water replenishment cavity 331. It can be understood that the limiting block 340 can limit the vertical movement of the float 320 to ensure that when the float 320 rises to the top of the water replenishment cavity 331, it can accurately block the water inlet 311, effectively cutting off the water supply.

[0034] In addition, due to the setting of the limiting block 340, the limiting block 340 can form a water flow channel between the float 320 and the inner wall of the water replenishment chamber 331. The liquid entering from the water replenishment port 311 can flow smoothly downward to the water inlet and enter the water storage chamber 210.

[0035] In some embodiments, two sets of limit blocks 340 are provided, and the two sets of limit blocks 340 are arranged vertically to keep the float 320 in a vertical state for lifting and lowering, thereby preventing the float 320 from tilting during lifting and lowering, and further ensuring that the float 320 can effectively block the water inlet 311.

[0036] In some embodiments, each group of limiting blocks 340 comprises multiple limiting blocks 340, which are arranged around the outer periphery of the float 320, with a gap between adjacent limiting blocks 340. This arrangement can further improve the stability of the float 320's vertical movement and ensure smooth liquid flow.

[0037] In some embodiments, refer to Figure 4 and Figure 5 The outer wall of the stationary ring 200 is provided with a drain outlet 220, which is located above the water storage chamber 210 and below the water replenishment plate 310. The drain outlet 220 is connected to the water storage chamber 210. When the float 320 malfunctions and cannot cut off the water supply, excess liquid can be discharged through the drain outlet 220 to a specific location for recycling, preventing liquid from overflowing the stationary ring 200 and contaminating the site.

[0038] In some embodiments, refer to Figure 3A drain pipe is connected to the drain outlet 220, and excess liquid in the water storage chamber 210 can flow along the drain pipe to a specific location for recycling.

[0039] Understandably, the drain outlet 220 is positioned higher than the liquid level when the float 320 normally blocks the inlet 311. When liquid is discharged from the drain outlet 220, operators can quickly ascertain that the float 320 is malfunctioning and address the issue promptly. Conversely, when the float 320 effectively blocks the inlet 311, the liquid level is lower than the drain outlet 220, preventing liquid discharge and thus minimizing water waste while ensuring the required liquid level.

[0040] In some embodiments, the water seal device further includes a controller, a flow meter, and an alarm. The flow meter and the alarm are electrically connected to the controller. The flow meter is installed at the drain outlet 220 to acquire the liquid flow signal at the drain outlet 220. The flow meter monitors whether liquid is flowing out of the drain outlet 220 and transmits the liquid flow signal to the controller. When liquid flows out of the drain outlet 220, the flow meter acquires the liquid flow signal and transmits it to the controller. The controller controls the alarm to sound an alarm, allowing staff to quickly be informed of the failure status of the float 320.

[0041] It is understandable that the alarm can be a buzzer, indicator light, etc., and no specific limitation is made here. The controller can be a microcontroller, PLC controller, etc., as long as it can realize the simple function of controlling the alarm to emit alarm signals.

[0042] In some embodiments, refer to Figure 4 and Figure 5 The side of the water replenishment tank 330 is also provided with multiple sets of liquid inlets 332, which are arranged vertically on the side of the water replenishment tank 330 and are respectively connected to the water replenishment chamber 331 and the water storage chamber 210. It can be understood that the liquid inlets 332 assist the water inlet in achieving liquid flow between the water replenishment chamber 331 and the water storage chamber 210, ensuring that the liquid levels in the water replenishment chamber 331 and the water storage chamber 210 are consistent, allowing the float 320 to sensitively open or close the water replenishment inlet 311. For example, when the water inlet is blocked, the liquid inlet 332 can connect the water replenishment chamber 331 and the water storage chamber 210, preventing the water replenishment structure 300 from failing.

[0043] In some embodiments, each group of liquid inlets 332 is provided with multiple liquid inlets 332, and the liquid inlets 332 located in the same group are arranged along the periphery of the water replenishment tank 330, which can facilitate the discharge of liquid in the water replenishment chamber 331 to the water storage chamber 210 around the water replenishment tank 330.

[0044] In some embodiments, refer to Figure 3A support plate 610 is provided on the top surface of the vessel body 600, and a support 400 is provided on the outer periphery of the stationary ring 200. The support 400 is positioned above the support plate 610, and the support 400 is detachably connected to the support plate 610. This arrangement allows for easy separation of the stationary ring 200 from the vessel body 600, facilitating routine maintenance or replacement of parts.

[0045] In some embodiments, the support plate 610 is welded to the top surface of the vessel body 600, and the support 400 is detachably connected to the support plate 610 by bolts, making disassembly and assembly convenient.

[0046] In some embodiments, the support plate 610 is annular, and the support 400 is also annular. The support 400 is installed on the outer periphery of the stationary ring 200 by welding or adhesive bonding, and the connection between the support plate 610 and the support 400 is airtight. In some embodiments, a sealing ring is provided between the support plate 610 and the support 400, which can improve the sealing performance between the support 400 and the support plate 610 and further prevent the product inside the vessel body 600 from being oxidized.

[0047] In some embodiments, the water-sealing device further includes reinforcing ribs 500, which connect the support 400 and the stationary ring 200 respectively. It is understood that when the stationary ring 200 is filled with liquid, its weight increases. The reinforcing ribs 500 improve the connection strength between the support 400 and the stationary ring 200, preventing breakage at the connection point and improving the stability of the stationary ring 200 installation. In this embodiment, the reinforcing rib 500 is a right-angled triangle, with one right-angled side connected to the outer wall of the stationary ring 200 and the other right-angled side connected to the upper surface of the support 400.

[0048] In some embodiments, multiple reinforcing ribs 500 are provided, and the multiple reinforcing ribs 500 are evenly arranged around the outer periphery of the stationary ring 200 to further improve the connection strength between the stationary ring 200 and the support 400.

[0049] In some embodiments, refer to Figure 3 A retaining ring 710 is provided on the outer periphery of the stirring rod 700, and the mounting part 120 is detachably connected to the upper or lower wall of the retaining ring 710. This configuration ensures a stable connection between the moving ring 100 and the stirring rod 700, prevents oxidation of the product inside the vessel body 600, and facilitates the separation of the water seal device from the stirring rod 700 for subsequent routine maintenance or component replacement.

[0050] In some embodiments, the mounting part 120 is disposed on the upper wall surface of the fixing ring 710 and is fixed by bolts, making it easy to assemble and disassemble.

[0051] In some embodiments, the moving ring 100 further includes a sealing gasket disposed between the mounting portion 120 and the fixed ring 710, which can seal the mounting portion 120 and the fixed ring 710, further preventing air from entering the interior of the vessel body 600 through the space between the moving ring 100 and the fixed ring 710, causing oxidation of the product inside the vessel body 600, and further ensuring product quality.

[0052] Secondly, this utility model embodiment proposes a reaction vessel, referring to... Figure 3 It includes a water-sealing device as proposed in any embodiment of the first aspect. It is understood that the reactor also includes a vessel body 600 and a stirring rod 700. The water-sealing device is installed at the connection between the vessel body 600 and the stirring rod 700, and can seal the connection between the vessel body 600 and the stirring rod 700 with liquid, preventing the product inside the vessel body 600 from being oxidized and improving product quality.

[0053] During use, the water in the water storage chamber 210 submerges the lower end of the sealing part 110 of the moving ring 100. When the stirring rod 700 rotates at high speed relative to the vessel body 600, the lower end face of the sealing part 110 can remain below the water surface during rotation, thus achieving a water seal between the stirring rod 700 and the vessel body 600 through the water in the water storage chamber 210. When the liquid level in the water storage chamber 210 decreases, the float 320 descends with the liquid level, and the water inlet 311 opens. Figure 5 The water source automatically supplies water to the water inlet 311. Water enters the water supply chamber 331 through the water inlet 311 and then enters the water storage chamber 210 through the water inlet, causing the liquid level in the water storage chamber 210 to rise. When the liquid level in the water storage chamber 210 rises to a preset height, the float 320 rises with the liquid level and blocks the water inlet 311. Figure 4 At this time, water from the water source cannot enter the water supply chamber 331, thus achieving the effect of automatic water shut-off and preventing the liquid from overflowing the static ring 200 due to excessive liquid. When the float 320 fails to work, the liquid level in the water storage chamber 210 continues to rise, and the float 320 cannot block the water supply port 311. At this time, excess water can be discharged through the drain port 220 to the preset recycling position, preventing liquid from overflowing and polluting the environment.

[0054] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A water-sealing device, characterized in that, The water-sealing device is applied to a reactor equipped with a vessel body (600) and a stirring rod (700), wherein the lower part of the stirring rod (700) is inserted into the vessel body (600). A stationary ring (200) is used to connect to the vessel body (600). The stationary ring (200) is provided with an upward-opening water storage cavity (210), which is annular. The moving ring (100) includes a mounting part (120) and a closing part (110). The mounting part (120) is used to connect with the stirring rod (700). The closing part (110) is ring-shaped. The upper end of the closing part (110) is connected to the mounting part (120), and the lower end of the closing part (110) is inserted into the water storage chamber (210). The water replenishment structure (300) includes a water replenishment plate (310), a water replenishment tank (330), and a float (320). The water replenishment plate (310) is connected to the upper end of the stationary ring (200) and is located outside the closed part (110). The water replenishment plate (310) is provided with a water inlet (311), which is used to connect with an external water source. The water replenishment tank (330) is located in the water storage cavity (210) and connected to the water replenishment plate (310). The water replenishment tank (330) surrounds the water inlet (320). The outer periphery of the water supply tank (311) is provided with a water supply cavity (331) that communicates with the water supply inlet (311). The lower side of the water supply tank (330) is provided with a water inlet that communicates with the water supply cavity (331) and the water storage cavity (210). The float (320) is located in the water supply cavity (331) and is slidably connected to the inner wall of the water supply cavity (331). When the float (320) floats to the top of the water supply cavity (331), the float (320) blocks the water supply inlet (311).

2. The water-sealing device according to claim 1, characterized in that, The upper surface of the float (320) is an upwardly convex arc surface, and the lower end of the inner wall of the water inlet (311) is provided with a groove, which matches the shape of the arc surface.

3. The water-sealing device according to claim 1, characterized in that, The water replenishment structure (300) also includes a limiting block (340), which is connected to the side wall of the float (320) and slidably connected to the inner wall of the water replenishment cavity (331).

4. The water-sealing device according to claim 1, characterized in that, The outer wall of the static ring (200) is provided with a drain outlet (220). The drain outlet (220) is located at the upper part of the water storage cavity (210) and at the lower side of the water replenishment plate (310). The drain outlet (220) is connected to the water storage cavity (210).

5. The water-sealing device according to claim 4, characterized in that, The water-sealing device also includes a controller, a flow meter, and an alarm. The flow meter is located at the drain outlet (220). The flow meter and the alarm are electrically connected to the controller. The flow meter is used to acquire the liquid flow signal at the drain outlet (220). The controller is configured to control the alarm to issue an alarm based on the liquid flow signal.

6. The water-sealing device according to claim 1, characterized in that, The side of the water replenishment tank (330) is also provided with multiple sets of liquid inlets (332). The multiple sets of liquid inlets (332) are arranged in the vertical direction on the side of the water replenishment tank (330) and are respectively connected to the water replenishment cavity (331) and the water storage cavity (210).

7. The water-sealing device according to claim 1, characterized in that, The top surface of the vessel body (600) is provided with a support plate (610), and the outer periphery of the stationary ring (200) is provided with a support (400). The support (400) is located above the support plate (610) and is detachably connected to the support plate (610).

8. The water-sealing device according to claim 7, characterized in that, The water-sealing device further includes reinforcing ribs (500), which are connected to the outer peripheral wall of the stationary ring (200) and the upper surface of the support (400), respectively.

9. The water-sealing device according to claim 1, characterized in that, The stirring rod (700) is provided with a fixing ring (710) on its outer periphery, and the mounting part (120) is detachably connected to the upper or lower wall surface of the fixing ring (710).

10. A reaction vessel, characterized in that, Includes the water-sealing device as described in any one of claims 1 to 9.

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