Cooling liquid supply device

Abstract

The utility model relates to the technical field of cooling equipment, in particular to cooling liquid supply equipment which comprises a first container and a second container which are arranged side by side. The first container and the second container are both connected with a liquid supply assembly; the first container is connected with a first liquid discharging assembly used for extracting and discharging liquid in the first container when needed. The second container is connected with a second liquid discharging assembly so that liquid in the second container can be extracted and discharged when needed. The first liquid discharging assembly and the second liquid discharging assembly are jointly connected with the liquid outlet pipe so as to discharge liquid in the first container and the second container to the liquid outlet pipe; the first liquid discharging assembly and the second liquid discharging assembly alternately work so as to alternately extract liquid in the first container and liquid in the second container to flow to the liquid outlet pipe.

Description

Technical Field

[0001] This utility model relates to the field of cooling equipment technology, specifically to a coolant supply device. Background Technology

[0002] In industrial production, some high-speed operating equipment requires continuous cooling water to lower its temperature during operation, preventing production and safety accidents caused by excessively high equipment temperatures. Referring to the field of solid-state additive manufacturing, when fabricating large-size deposited components, the existing cooling water supply equipment's storage capacity cannot meet the long-term fabrication process, directly leading to heat accumulation in the components and affecting their mechanical properties. To ensure a continuous supply of cooling water, reduce the amount of fresh water used, and improve the reuse rate of existing cooling water to achieve energy conservation and consumption reduction, the water supply equipment should use circulating water as much as possible. Therefore, cooling water circulation systems are widely and importantly used in scientific research experiments and actual production.

[0003] Referring to current common cooling water circulation systems, most of them use cooling towers to achieve the purpose of circulation. However, the continuous use of cooling towers consumes a lot of energy and has very high operating costs. Moreover, because the equipment is in a high-speed rotation state, a large amount of cooling water splashes during the cooling process, which greatly reduces the secondary utilization rate. In addition, existing circulating water supply equipment is generally large in size, with slow response and cumbersome daily maintenance. Therefore, it is necessary to propose a dynamic cooling water circulation supply equipment that is highly operable and has a fast response. Utility Model Content

[0004] To address the issue of large size in current cooling equipment, this invention provides a coolant supply device.

[0005] The technical solution of this utility model is as follows:

[0006] On the one hand, this utility model provides a coolant supply device, characterized in that it includes:

[0007] First container;

[0008] Second container;

[0009] Both the first container and the second container are connected to a liquid supply assembly;

[0010] The first drainage component is connected to the first container;

[0011] The second drainage component is connected to the second container; both the first drainage component and the second drainage component are connected to an outlet pipe.

[0012] The first drainage component and the second drainage component work alternately to draw liquid from the first container and the second container respectively and direct it to the outlet pipe.

[0013] Furthermore, the liquid supply assembly includes a first vacuum pump and a second vacuum pump, with the first container connected to the first vacuum pump and the second container connected to the second vacuum pump.

[0014] Furthermore, both the first container and the second container are sealed containers; the first vacuum pump is connected to the first container via a first suction valve to create a negative pressure state inside the first container; the second vacuum pump is connected to the second container via a second suction valve to create a negative pressure state inside the second container.

[0015] Furthermore, the coolant supply device also includes a first pressure detection component and a second pressure monitoring component; the first pressure detection component is used to monitor the pressure inside the first container; the second pressure monitoring component is used to monitor the pressure inside the second container.

[0016] Furthermore, the coolant supply device also includes a first air valve and a second air valve; the first air valve connects the first container to the outside; and the second air valve connects the second container to the outside.

[0017] Furthermore, the liquid supply assembly also includes a first liquid inlet valve, a second liquid inlet valve, and a liquid inlet pipe. The first liquid inlet valve is connected to the first container; the second liquid inlet valve is connected to the second container; and both the first liquid inlet valve and the second liquid inlet valve are connected to the liquid inlet pipe.

[0018] Furthermore, the coolant supply device also includes a controller, a first liquid level monitoring component, and a second liquid level monitoring component; the controller is connected to the first drain component, the second drain component, the first liquid level monitoring component, and the second liquid level monitoring component; wherein, the first liquid level monitoring component is used to monitor the liquid level in the first container; and the second liquid level monitoring component is used to monitor the liquid level in the second container.

[0019] Furthermore, three liquid level trigger points, A1, A2, and A3, are arranged sequentially from bottom to top in the first container, and three liquid level trigger points, B1, B2, and B3, are arranged sequentially from bottom to top in the second container, corresponding to the three liquid level trigger points in the first container; the three liquid level trigger points in the first container are all connected to the first liquid level monitoring component; the three liquid level trigger points in the second container are all connected to the second liquid level monitoring component.

[0020] Furthermore, when the first drain assembly draws liquid from the first container, the first container stops receiving liquid, while the second container can receive liquid; or when the second drain assembly draws liquid from the second container, the second container stops receiving liquid, while the first container can receive liquid.

[0021] Furthermore, the first drainage assembly includes a first water pump, a first water pump valve, and a first water outlet valve, wherein the first water pump valve is located between the first water pump and the first container; and the first water outlet valve is located between the first water pump valve and the outlet pipe.

[0022] And / or the second drainage assembly includes a second pump, a second pump valve, and a second outlet valve, wherein the second pump valve is located between the second pump and the second container, and the second outlet valve is located between the second pump and the outlet pipe.

[0023] The beneficial effects achieved by this utility model are as follows:

[0024] This utility model discloses a coolant supply device in which a second container is arranged side-by-side with a first container and both are connected to a supply assembly. The supply assembly can supply coolant to the first container and / or the second container, and the coolant can be water, oil, or other suitable cooling liquids. A first drain assembly can draw liquid from the first container and discharge it to an outlet pipe. A second drain assembly can draw liquid from the second container and discharge it to an outlet pipe. The outlet pipe is connected to a coolant demand module. The first and second drain assemblies work alternately to draw liquid from the first and second containers and discharge it to the outlet pipe. By alternately supplying liquid to the outlet pipe, the volume limitation of the storage container itself can be overcome, allowing for a continuous supply of coolant. This meets the continuous coolant demand in scientific research experiments and actual industrial production processes. Furthermore, it improves the safety and reliability of the circulating water system supply and saves resources. Attached Figure Description

[0025] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0026] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0028] Figure 1 This is a schematic diagram of the main view structure of an embodiment of this application;

[0029] Figure 2 This is a first three-dimensional structural schematic diagram of an embodiment of this application;

[0030] Figure 3 This is a second three-dimensional structural schematic diagram of an embodiment of this application;

[0031] Figure 4 This is a schematic diagram of the system connection relationship in an embodiment of this application.

[0032] In the picture,

[0033] 100, First container; 200, Second container; 300, Liquid supply assembly; 400, First drain assembly; 500, Second drain assembly; 600, Outlet pipe; 700, First liquid level monitoring assembly; 800, Second liquid level monitoring assembly; 110, First air extraction valve; 120, First pressure detection assembly; 130, First air valve; 210, Second air extraction valve; 220, Second pressure detection assembly; 230, Second air valve; 310, First liquid inlet valve; 320, Second liquid inlet valve; 330, Inlet pipe; 410, First water pump; 420, First water extraction valve; 430, First water outlet valve; 510, Second water pump; 520, Second water extraction valve; 530, Second water outlet valve; 340, First vacuum pump; 350, Second vacuum pump. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by a person of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0035] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0036] For ease of description, spatial relative terms may be used in this text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in this text will be interpreted accordingly.

[0037] This application embodiment illustrates a coolant supply device, including a first container 100 and a second container 200, which are arranged side by side with the first container 100. Both the first container 100 and the second container 200 are connected to a liquid supply assembly 300. The first container 100 is connected to a first drain assembly 400 for drawing and draining liquid from the first container 100 when needed. The second container 200 is connected to a second drain assembly 500 for drawing and draining liquid from the second container 200 when needed. The first drain assembly 400 and the second drain assembly 500 are connected to a liquid outlet pipe 600 to discharge liquid from the first container 100 and the second container 200 to the liquid outlet pipe 600. The first drain assembly 400 and the second drain assembly 500 work alternately to alternately draw liquid from the first container 100 and the second container 200 and direct it to the liquid outlet pipe 600.

[0038] In this embodiment, the second container 200 is arranged side by side with the first container 100 and is connected to the liquid supply assembly 300. The liquid supply assembly 300 can supply liquid to the first container 100 and / or the second container 200. The liquid can be water, oil, or other liquids suitable for cooling. The first drain assembly 400 can draw liquid from the first container 100 and discharge it to the outlet pipe 600. The second drain assembly 500 can draw liquid from the second container 200 and discharge it to the outlet pipe 600. The outlet pipe 600 is connected to the cooling liquid demand module. The first drain assembly 400 and the second drain assembly 500 work alternately to alternately draw liquid from the first container 100 and the second container 200 and discharge it to the outlet pipe 600. By alternately supplying liquid to the outlet pipe 600, the volume limitation of the storage container itself can be overcome, and the cooling liquid can be continuously supplied, thereby meeting the continuous demand for cooling liquid in scientific research experiments and actual industrial production processes. It also improves the safety and reliability of the circulating water system supply and plays a role in saving resources.

[0039] In one optional embodiment, the liquid supply assembly 300 includes a first vacuum pump 340 and a second vacuum pump 350. The first container 100 is connected to the first vacuum pump 340 to be adapted to draw negative pressure into the first container 100; the second container 200 is connected to the second vacuum pump 350 to be adapted to draw negative pressure into the second container 200. In one usage state, the first vacuum pump 340 draws a vacuum into the first container 100 to a negative pressure state, thereby drawing liquid from the liquid supply pipe of the liquid supply assembly 300 into the first container 100. The working principle of the second vacuum pump 350 is similar to that of the first vacuum pump 350, and will not be described in detail here. It is a better choice to select a vacuum pump as the power component of the liquid supply assembly 300, because if a booster pump or diaphragm pump draws a gas-liquid mixture during use, it will lead to pressure loss and poor liquid drawing effect.

[0040] In one alternative implementation, before liquid injection, the air pressure inside the first container 100 or the second container 200 can be reduced to below standard atmospheric pressure by using a first vacuum pump 340 or a second vacuum pump 350.

[0041] In one optional embodiment, the first container 100 is further provided with a first air valve 130 connected to the controller 900; the second container 200 is further provided with a second air valve 210 connected to the controller 900.

[0042] In this embodiment, when liquid needs to be drained from the first container 100 and the second container 200, the two containers may be under negative pressure, which is not conducive to draining. At this time, the corresponding first air valve 130 or second air valve 210 can be opened to balance the air pressure between the container and the outside, so as to facilitate smooth draining.

[0043] In one optional embodiment, both the first container 100 and the second container 200 are sealed containers, and a first suction valve 110 is provided between the first container 100 and the first vacuum pump 340; a second suction valve 210 is provided between the second container 200 and the second vacuum pump 350.

[0044] In this embodiment, both the first container 100 and the second container 200 are sealed containers, which facilitates the control of the pressure inside the containers. By opening the first suction valve 110, the first vacuum pump 340 can be controlled to draw the contents of the first container 100 into a negative pressure state, thereby allowing liquid to enter. By opening the second suction valve 210, the second vacuum pump 350 can be controlled to draw the contents of the second container 200 into a negative pressure state, thereby allowing liquid to enter.

[0045] In one optional embodiment, the coolant supply device further includes a first pressure detection component 120 and a second pressure monitoring component 220; the first pressure detection component 120 is used to monitor the pressure inside the first container 100; and the second pressure monitoring component 220 is used to monitor the pressure inside the second container 200.

[0046] In this embodiment, both the first pressure detection component 120 and the second pressure detection component 220 can be selected as pressure gauges. The pressure inside the first container 100 and the second container 200 can be monitored by the first pressure detection component 120 and the second pressure detection component 220 respectively, so as to facilitate their adjustment and control.

[0047] In one optional embodiment, the coolant supply device further includes a controller 900, which is connected to the first drain assembly 400 and the second drain assembly 500. The first drain assembly 400 and the second drain assembly 500 include water pumps, and the controller 900 can control the opening and closing of the water pumps. In one usage state, in order to enable the first drain assembly 400 and the second drain assembly 500 to work alternately to alternately draw liquid from the first container 100 and the second container 200 respectively, when the controller 900 controls the first drain assembly 400 to work, the second drain assembly 500 will not work, and vice versa.

[0048] In one alternative embodiment, the coolant supply device further includes a first liquid level monitoring component 700 connected to the controller 900 to monitor the liquid level in the first container 100; and a second liquid level monitoring component 800 connected to the controller 900 to monitor the liquid level in the second container 200.

[0049] In this embodiment, the first liquid level monitoring component 700 monitors the liquid level in the first container 100, and the second liquid level monitoring component 800 monitors the liquid level in the second container 200. When the liquid level in a certain container reaches a preset value, the controller 900 controls the corresponding drainage component of that container to drain the liquid. For example, when the liquid level in the first container 100 reaches a high point, the first drainage component 400 is controlled to operate to drain the liquid from the first container 100, while liquid continues to flow into the second container 200. When the liquid in the first container 100 is drained to a low level, The first drain assembly 400 stops working and begins to fill the first container 100 with liquid. At the same time, when the liquid level in the second container 200 reaches its high point, the second drain assembly 500 starts to work to pump out the liquid. Meanwhile, the first container 100 continues to fill with liquid, and this cycle repeats to achieve a dynamic circulation supply of cooling liquid. As can be seen from the above, this invention is not limited to only the first container 100 and the second container 200. More containers can be set according to the actual situation, as long as the purpose of alternating liquid supply can be achieved. Using only two containers can help to reduce the size of the overall equipment.

[0050] In one optional embodiment, three liquid level trigger points, A1, A2, and A3, are arranged sequentially from bottom to top in the first container 100, and three liquid level trigger points, B1, B2, and B3, are arranged sequentially from bottom to top in the second container 200, corresponding to the three liquid levels in the first container 100 respectively; the three liquid level trigger points in the first container 100 are all connected to the first liquid level monitoring component 700; and the three liquid level trigger points in the second container 200 are all connected to the second liquid level monitoring component 800.

[0051] In this embodiment, when the liquid level in the first container 100 reaches different trigger points, the first liquid level monitoring component 700 will detect it, and the controller 900 will control the liquid supply component 300, the first drain component 400, and the second drain component 500 to perform corresponding actions. For example, first, the first container 100 is controlled to fill with liquid up to A2, at which point the second container 200 is controlled to start filling with liquid. When the liquid level in the first container 100 reaches A3, the filling of the first container 100 is stopped, the first drain component 400 starts draining, and the second container 200 can continue filling with liquid. When the liquid level in the first container 100 reaches or falls below A1, the first drain component 400 stops working and the liquid in the first container 100 is extracted. Negative pressure; when the liquid level in the second container 200 reaches B2, the first container 100 begins to fill with liquid; when the liquid level in the second container 200 reaches B3 or the liquid level in the first container 100 is A2, the second drainage component 500 starts to drain liquid; when the liquid level in the second container 200 is drained to B1, the drainage in the second container 200 stops and negative pressure is drawn from the second container 200; it is determined whether the liquid level in the first container 100 is not lower than A2. If so, the second container 200 is controlled to start filling with liquid; when the liquid level in the first container 100 is A3 or the liquid level in the second container 200 is B2, the first container 100 starts to drain liquid; this cycle repeats to achieve the effect of alternating continuous liquid supply.

[0052] Optionally, the first container 100 and the second container 200 have the same internal storage space.

[0053] Optionally, the height from the inner bottom of the first container 100 to A1, the height from A1 to A2, and the height from A2 to A3 are all the same; the height from the inner bottom of the second container 200 to B1, the height from B1 to B2, and the height from B2 to B3 are all the same.

[0054] Optionally, the negative pressure inlet velocity between units is less than the outlet velocity.

[0055] In one optional embodiment, both the first liquid level monitoring component 700 and the second liquid level monitoring component 800 are liquid level monitoring modules and are respectively disposed at the bottom of the first container 100 and the second container 200; for example Figure 1-3 As shown, the first container 100 and the second container 200 are installed inside the housing, and liquid level monitoring modules are installed at the bottom of the first container 100 and the second container 200 to monitor the liquid level of the respective containers.

[0056] In one optional embodiment, the liquid supply assembly 300 includes a first liquid inlet valve 310, a second liquid inlet valve 320, and a liquid inlet pipe 330. The first liquid inlet valve 310 is connected to the first container 100; the second liquid inlet valve 320 is connected to the second container 200; and both the first liquid inlet valve 310 and the second liquid inlet valve 320 are connected to the liquid inlet pipe 330.

[0057] In this embodiment, both the first inlet valve 310 and the second inlet valve 320 are connected to the controller 900. Opening the first inlet valve 310 allows liquid to enter the first container 100; opening the second inlet valve 320 allows liquid to enter the second container 200. The first inlet valve 310 and the second inlet valve 320 can be opened simultaneously, or only one of them can be opened.

[0058] In one optional embodiment, the first drainage assembly 400 includes a first pump 410, a first pump valve 420, and a first outlet valve 430. The first pump valve 420 is located between the first pump 410 and the first container 100; the first outlet valve 430 is located between the first pump valve 420 and the outlet pipe 600.

[0059] In this embodiment, when it is necessary to drain the liquid from the first container 100, the first water pump 410, the first water pumping valve 420, and the first water outlet valve 430 are turned on to smoothly drain the liquid from the first container 100. Optionally, to ensure the normal discharge of the liquid from the container, the first liquid inlet valve 310 and the first liquid draining assembly 400 do not work simultaneously. Optionally, the first water pump 410 may be a submersible pump.

[0060] In one optional embodiment, the second drainage assembly 500 includes a second pump 510, a second pump valve 520, and a second outlet valve 530. The second pump valve 520 is located between the second pump 510 and the second container 200, and the second outlet valve 530 is located between the second pump 510 and the outlet pipe 600.

[0061] In this embodiment, when it is necessary to drain the liquid from the second container 200, the second water pump 510, the second water pump valve 520, and the second water outlet valve 530 are turned on to smoothly extract the liquid from the second container 200; optionally, the second liquid inlet valve 320 and the second liquid drainage assembly 500 do not work simultaneously; optionally, the second water pump 510 can be a submersible pump.

[0062] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0063] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0064] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A coolant supply device, characterized in that: include First container (100); Second container (200); Both the first container (100) and the second container (200) are connected to a liquid supply assembly (300); The first drainage assembly (400) is connected to the first container (100); The second drainage assembly (500) is connected to the second container (200); both the first drainage assembly (400) and the second drainage assembly (500) are connected to the outlet pipe (600); The first drainage component (400) and the second drainage component (500) work alternately to draw liquid from the first container (100) and the second container (200) respectively and direct it to the outlet pipe (600).

2. The coolant supply device according to claim 1, characterized in that: The liquid supply assembly (300) includes a first vacuum pump (340) and a second vacuum pump (350), with the first container (100) connected to the first vacuum pump (340) and the second container (200) connected to the second vacuum pump (350).

3. The coolant supply device according to claim 2, characterized in that: Both the first container (100) and the second container (200) are sealed containers; the first vacuum pump (340) is connected to the first container (100) through a first suction valve (110) to create a negative pressure state inside the first container (100); the second vacuum pump (350) is connected to the second container (200) through a second suction valve (210) to create a negative pressure state inside the second container (200).

4. The coolant supply device according to claim 3, characterized in that: The coolant supply device further includes a first pressure detection component (120) and a second pressure monitoring component (220); the first pressure detection component (120) is used to monitor the pressure inside the first container (100); the second pressure monitoring component (220) is used to monitor the pressure inside the second container (200).

5. The coolant supply device according to claim 3, characterized in that: The coolant supply device also includes a first air valve (130) and a second air valve (230); the first air valve (130) connects the first container (100) to the outside; the second air valve (230) connects the second container (200) to the outside.

6. The coolant supply device according to any one of claims 1-5, characterized in that: The liquid supply assembly (300) further includes a first liquid inlet valve (310), a second liquid inlet valve (320), and a liquid inlet pipe (330). The first liquid inlet valve (310) is connected to the first container (100); the second liquid inlet valve (320) is connected to the second container (200); and both the first liquid inlet valve (310) and the second liquid inlet valve (320) are connected to the liquid inlet pipe (330).

7. The coolant supply device according to any one of claims 1-5, characterized in that: The coolant supply device further includes a controller (900), a first liquid level monitoring component (700), and a second liquid level monitoring component (800); the controller (900) is connected to the first drain component (400), the second drain component (500), the first liquid level monitoring component (700), and the second liquid level monitoring component (800); wherein, the first liquid level monitoring component (700) is used to monitor the liquid level in the first container (100); and the second liquid level monitoring component (800) is used to monitor the liquid level in the second container (200).

8. The coolant supply device according to claim 7, characterized in that: The first container (100) has three liquid level trigger points arranged from bottom to top as A1, A2 and A3 respectively, and the second container (200) has three liquid level trigger points arranged from bottom to top as B1, B2 and B3 respectively, which correspond to the three liquid level trigger points in the first container (100); the three liquid level trigger points in the first container (100) are all connected to the first liquid level monitoring component (700); the three liquid level trigger points in the second container (200) are all connected to the second liquid level monitoring component (800).

9. The coolant supply device according to any one of claims 1-5, characterized in that: When the first drain assembly (400) draws liquid from the first container (100), the liquid intake in the first container (100) stops, and the liquid intake in the second container (200) is permitted; or when the second drain assembly (500) draws liquid from the second container (200), the liquid intake in the second container (200) stops, and the liquid intake in the first container (100) is permitted.

10. The coolant supply device according to any one of claims 1-5, characterized in that: The first drainage assembly (400) includes a first water pump (410), a first water pump valve (420), and a first water outlet valve (430). The first water pump valve (420) is located between the first water pump (410) and the first container (100); the first water outlet valve (430) is located between the first water pump valve (420) and the outlet pipe (600). And / or the second drainage assembly (500) includes a second water pump (510), a second water pump valve (520) and a second water outlet valve (530), the second water pump valve (520) being located between the second water pump (510) and the second container (200), and the second water outlet valve (530) being located between the second water pump (510) and the outlet pipe (600).

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