Liquid injection device and liquid injection device system

Abstract

The invention relates to the technical field of liquid injection, in particular to a liquid injection device and a liquid injection device system.The liquid injection device comprises a containing part, a first pipeline and an atmospheric pressure connecting device; the accommodating piece is used for accommodating liquid; the first pipeline (100) comprises a first inlet (101) and a first outlet (102), the first inlet (101) is connected with the containing part, and the first outlet (102) is suitable for liquid injection; an atmospheric pressure connecting device (3) is arranged on the first pipeline (100), and the atmospheric pressure connecting device is suitable for adjusting the height from the reference plane in the direction perpendicular to the reference plane so as to adjust the distance between the atmospheric pressure connecting device and the liquid level of the liquid in the containing piece in the direction perpendicular to the reference plane. By means of the arrangement, a metering pump which is usually used as a liquid metering device in the prior art is omitted, namely the metering pump is used for controlling the liquid injection amount, the cost of the liquid injection device is saved, and the liquid injection accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid injection, and in particular to a liquid injection device (1000) and a liquid injection device system. Background Art

[0002] In the prior art, a liquid metering device is generally installed in the liquid injection device, and the liquid metering device is adjusted to control the injection amount. In addition, multiple liquid injection devices are simultaneously equipped in the liquid injection device system to realize the injection of multiple containers separately. In order to ensure the consistency of the injection amount of each container, a liquid metering device needs to be set on each liquid injection branch. In the prior art, a metering pump is often used as a liquid metering device, that is, a metering pump is used to control the injection amount. The metering pump needs to be set corresponding to the liquid injection device to realize the control of the injection amount of different containers, so more metering pumps are needed. The cost of the metering pump is high, and the increase in the number of metering pumps will increase the cost of the liquid injection device system. Summary of the invention

[0003] The embodiments of the present application provide a liquid injection device (1000) and a liquid injection device system to solve at least part of the above-mentioned problems, while accurately controlling the injection volume, eliminating the use of a metering pump, thereby reducing the cost of the liquid injection device.

[0004] In a first aspect, an embodiment of the present application provides a liquid injection device, which is applied to a liquid injection device system, and the liquid injection device includes: a container, a first pipeline, and an atmospheric pressure connecting device, wherein a container cavity is formed inside the container; the first pipeline includes a first inlet and a first outlet, the first inlet is connected to the container, and the first outlet is suitable for liquid injection; the atmospheric pressure connecting device is arranged on the first pipeline, and the atmospheric pressure connecting device is arranged on the first pipeline, and the atmospheric pressure connector is suitable for adjusting the height from the reference plane in a direction perpendicular to the reference plane, so as to adjust the distance between the atmospheric pressure connector and the liquid level in the container in a direction perpendicular to the reference plane.

[0005] In certain embodiments, the injection device further comprises a first valve, wherein the first valve is disposed on the first pipeline and between the first inlet and the atmospheric pressure connection device, and the first valve is suitable for controlling the opening or closing of the first pipeline.

[0006] In certain embodiments, a distance between a side of the first valve closest to the atmospheric pressure connection device and a side of the atmospheric pressure connection device closest to the first valve on the first pipeline is in a range of 8 mm to 20 mm.

[0007] In certain embodiments, the liquid injection device further comprises a second valve, wherein the second valve is connected to the container and is suitable for injecting liquid into the container chamber through the second valve.

[0008] In certain embodiments, the liquid injection device further comprises an adjusting device, wherein the adjusting device is connected to the first pipeline, and the adjusting device is suitable for adjusting the distance between the atmospheric pressure connecting device and the reference plane in a direction perpendicular to the reference plane.

[0009] In some embodiments, the container includes a first container and a second container, the first container is placed in the second container; the first container includes an open portion, the open portion connects the first container and the second container.

[0010] In some embodiments, a plane formed by edges of the opening is parallel to the reference plane.

[0011] In some embodiments, an area enclosed by the edges of the opening is larger than a cross-sectional area of ​​the first inlet.

[0012] In some embodiments, the shape formed by the edges of the opening is a circle.

[0013] In some embodiments, the device further comprises a second pipe, wherein the second pipe connects the first container and the second valve, and the second valve is adapted to control the opening or closing of the second pipe.

[0014] In some embodiments, the liquid injection device also includes a third valve, which includes a third valve inlet and one or more third valve outlets, the third valve inlet is connected to the second container, and the third valve outlet is suitable for allowing the liquid in the second container to flow out; the third valve is suitable for controlling the liquid in the second container to flow out through one or more third valve outlets.

[0015] In certain embodiments, a third pipe is further included, wherein the third pipe connects the third valve inlet (201) and the second container.

[0016] In certain embodiments, the injection device further comprises a fourth valve, wherein the fourth valve is connected to the second container, and the fourth valve is adapted to connect the second container to atmospheric pressure.

[0017] In certain embodiments, the injection device further comprises a fourth conduit, wherein the fourth conduit connects the second container and the fourth valve, and the fourth valve is adapted to control the opening or closing of the fourth conduit.

[0018] In certain embodiments, the liquid injection device further comprises a vacuum pipe, wherein the vacuum pipe is connected to the second container, and the vacuum pipe is suitable for forming a vacuum in the container.

[0019] In certain embodiments, the liquid injection device further comprises a vacuum valve, wherein the vacuum valve is disposed on the vacuum pipe, and the vacuum valve is suitable for controlling the opening or closing of the vacuum pipe.

[0020] In certain embodiments, the liquid injection device further comprises a sensor, wherein the sensor is connected to the second container, and the sensor is adapted to detect whether there is liquid in the second container.

[0021] In some embodiments, the first container includes a first top and a first bottom, and the second container includes a second top, a second bottom, and a second peripheral wall, wherein the second peripheral wall connects the second bottom and the second top.

[0022] In certain embodiments, the first top portion is a dome.

[0023] In some embodiments, the invention further comprises a first conduit, wherein the first conduit comprises a first inlet and a first outlet, and the first inlet is connected to the first bottom.

[0024] In some embodiments, a second pipe is included, and the second pipe is connected to the first bottom.

[0025] In certain embodiments, a third pipe is included, and the third pipe is connected to the second bottom.

[0026] In certain embodiments, a fourth conduit is included, the fourth conduit being connected to the second top portion.

[0027] In certain embodiments, a vacuum line is included, the vacuum line being connected to the second top portion.

[0028] In some embodiments, the container includes a first container, the first container includes an opening portion, and the opening portion is disposed at the first top portion.

[0029] In some embodiments, a sensor is included, and the sensor is disposed on the second peripheral wall.

[0030] On the other hand, an embodiment of the present application further provides an injection device system, which includes at least one injection pump and at least one of the injection devices described above, wherein the injection pump includes an injection pump input port and an injection pump output port, wherein the injection pump output port is connected to the container, and the injection pump is suitable for pumping liquid into the container.

[0031] In certain embodiments, the injection device system further includes at least one manifold block, the manifold block including at least one manifold block input port and at least two manifold block output ports; the injection device includes a second valve, the second valve is connected to the first container, and the second valve is suitable for injecting liquid into the container chamber; the manifold block input port is connected to the injection pump output port, and the manifold block output port is connected to the second valve; the injection pump is suitable for pumping liquid into the first container through the manifold block and the second valve in sequence.

[0032] In certain embodiments, each of the manifold blocks is adapted to be connected to a plurality of the infusion pumps; and / or the manifold blocks are adapted to be connected to a plurality of the second valves.

[0033] In some embodiments, the injection device system also includes at least one first tank body, the injection device includes a third valve), the first tank body is connected to the output port of the third valve); and / or the first tank body includes at least one tank body output port, and the tank body output port is connected to the injection pump input port.

[0034] In some embodiments, the injection device system also includes at least one fifth pipeline and at least one fifth valve, wherein the fifth pipeline is suitable for connecting the manifold block and the first tank body; the fifth valve is arranged on the fifth pipeline, and the fifth valve is suitable for controlling the opening and closing of the fifth pipeline.

[0035] In some embodiments, the injection device system further comprises a second tank body, the second tank body is suitable for connecting to the injection pump input port; and / or the second tank body is suitable for connecting to the injection pump output port; and / or the injection device comprises a third valve), the second tank body is connected to the third valve output port. In some embodiments, a sensor is included, and the sensor is arranged on the second peripheral wall.

[0036] The present application sets the distance between the atmospheric pressure connection device and the liquid level in the container in a direction perpendicular to the reference plane X so that a certain amount of liquid in the container flows out, thereby eliminating the liquid quantitative device, and quantitative liquid injection can be achieved by simply adjusting the height of the atmospheric pressure connection device. In the liquid injection device system of the present application, a liquid injection pump is used to replace the quantitative pump, and the liquid is injected into the liquid injection device by the liquid injection pump, and quantitative liquid injection is achieved by adjusting the height difference between the liquid level in the first container and the atmospheric pressure connection device, eliminating the use of the quantitative pump, and saving the production cost of the liquid injection device and the liquid injection device system.

[0037] Additional aspects and advantages of the embodiments of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0039] Figure 1 is a schematic structural diagram of a liquid injection device (1000) provided in the present application;

[0040] Figure 2 It is a structural schematic diagram of the liquid injection device system provided by the present application;

[0041] Figure 3 It is a schematic structural diagram of the liquid injection device (1000) provided in the present application.

[0042] Description of main reference numerals:

[0043] 1000-liquid injection device; 1-first container; 2-second container; 3-atmospheric pressure connection device; 4-adjusting device; 5-sensor; 6-liquid injection pump; 7-manifold block; 8-first sub-tank; 9-second sub-tank; 11-first top; 12-first bottom; 21-second top; 22-second bottom; 23-second peripheral wall; 13-opening; B01-fourth valve; B00-fourth pipeline; A00-vacuum pipeline; A01-vacuum valve; 100-first pipeline; 110-first valve; 101-first inlet ;102-first outlet;200-third pipeline;210-third valve;201-third valve inlet;211-first sub-valve;220-second sub-valve;230-first sub-pipeline;240-second sub-pipeline;310-second valve;300-second pipeline;400-fifth pipeline;410-fifth valve;500-seventh sub-pipeline;600-sixth sub-pipeline;510-fourth sub-valve;610-third sub-valve;901-sixth valve;910-third sub-pipeline;920-fourth sub-pipeline. DETAILED DESCRIPTION

[0044] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the embodiments of the present application, and cannot be understood as limiting the embodiments of the present application.

[0045] In the description of the present application, it should be understood that the terms "thickness", "upper", "top", "bottom", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0046] The embodiment of the present application provides a liquid injection device (1000), comprising a container, a first pipeline (100), and an atmospheric pressure connection device (3). A receiving cavity is formed in the container for containing liquid. The first pipeline (100) comprises a first inlet (101) and a first outlet (102), the first inlet (101) is connected to the container, and the first outlet (102) is suitable for injecting liquid into other containers; the atmospheric pressure connection device (3) is arranged on the first pipeline and communicated with the first pipeline, and the atmospheric pressure connection device (3) connects the first pipeline (100) with atmospheric pressure.

[0047] refer to Figure 3 According to the communicating vessel principle, when atmospheric pressure exists in the container, the height difference between the atmospheric pressure connecting device and the liquid level in the container in the direction perpendicular to the reference plane X is adjusted so that the liquid in the container flows out of the first pipe until the liquid level in the container and the atmospheric pressure connecting device (3) are at the same height from the reference plane in the direction perpendicular to the reference plane X. At this time, the liquid no longer flows out. Thus, quantitative liquid injection of the liquid injection device can be achieved by adjusting the height of the atmospheric pressure connecting device (3) from the reference plane X. It should be noted that the reference plane X can be a ground plane. According to the communicating vessel principle, when the height of the liquid level in the container from the reference plane in the direction perpendicular to the reference plane X is less than the height of the atmospheric pressure connector (3) from the reference plane in the direction perpendicular to the reference plane X, the liquid in the container cannot flow out through the first pipe (100). The atmospheric pressure connecting device (3) connects the atmospheric pressure inside the atmospheric pressure connecting device (3) with the external atmospheric pressure, so that atmospheric pressure exists inside the atmospheric pressure connecting device, which can prevent the siphon effect from occurring during the liquid injection process, thereby causing inaccurate liquid injection. It should be noted that the commonly used atmospheric pressure connecting device (3) can be a space-breaking ball, that is, a sphere with an opening that can connect the pipeline and the atmospheric pressure. Other connectors that can connect the first pipeline (100) and the atmospheric pressure can be used as the atmospheric pressure connecting device (3) of the present application, and no specific restrictions are made here.

[0048] In certain embodiments, the present application further comprises a first valve (110), the first valve (110) being arranged between the first inlet (101) and the atmospheric pressure connection device (3), the first valve (110) being adapted to control the opening or closing of the first pipeline (100). When the first valve (110) is closed, even if the distance between the atmospheric pressure connection device (3) and the reference plane X is smaller than the distance between the opening (13) and the reference plane X, the liquid in the first container (1) will not flow out. The design of the first valve (110) makes the operation of the liquid injection device (1000) more convenient.

[0049] In some embodiments, the distance between the side of the first valve (110) close to the atmospheric pressure connection device (3) and the side of the atmospheric pressure connection device (3) close to the first valve (110) is in the range of 8 mm to 20 mm. Under the action of atmospheric pressure, the liquid in the first container (1) will flow out through the first pipe (100) until the liquid level in the first container (1) is level with the atmospheric pressure connection device (3). At this time, liquid exists in the first pipe (100) from the first inlet (101) to the atmospheric pressure connection device (3). When the liquid injection device (1000) is vibrated by external force, the liquid in the first pipe (100) will overflow from the atmospheric pressure connection device (3) connected to the atmospheric pressure and flow out due to the vibration. When the injection is completed, the first valve (110) is closed. Since the distance between the side of the first valve (110) close to the atmospheric pressure connection device (3) and the side of the atmospheric pressure connection device (3) close to the first valve (110) on the first pipeline is in the range of 8 mm to 20 mm, even if the injection device (1000) is vibrated, the liquid in the first pipeline (100) will not overflow from the portion of the atmospheric pressure connection device (3) connected to the atmospheric pressure. Therefore, the first valve (110) is installed at the position closest to the atmospheric pressure connection device (3) to prevent the liquid from overflowing from the first pipeline (100) when no injection is performed.

[0050] In some embodiments, the liquid injection device (1000) further comprises a second valve (310), the second valve (310) is connected to the container, and liquid can be injected into the container through the second valve (310). Of course, in some embodiments, the liquid injection device (1000) further comprises a second pipe (310), and the second valve (310) is arranged on the second pipe (310) to control the opening or closing of the second pipe (310), so that liquid can be injected into the first container through the second valve.

[0051] In certain embodiments, the present application further comprises an adjusting device (4). During the use of the liquid injection device (1000), the height of the atmospheric pressure connection device (3) of the first pipeline (100) is often adjusted by intelligent adjustment and / or mechanical adjustment instead of manual adjustment. The adjusting device (4) can be installed on the first pipeline (100) or near the first pipeline (100). The adjusting device (4) for adjusting the position of the atmospheric pressure connection device (3) is within the protection scope of the present application and is not specifically limited herein.

[0052] In certain embodiments, the container of the present application further comprises a first container (1) and a second container (2), wherein the first container (1) is placed in the second container (2). The first container (1) comprises an opening (13), wherein the opening (13) is connected to the first container (1) and the second container (2). The second pipe (310) is connected to the first container (1), and when liquid is poured into the container, the first container (1) is filled first. When the liquid overflows from the opening (13) of the first container (1) to the second container (2), it can be determined that the first container (1) is filled with liquid. At this time, the height of the atmospheric pressure connection device (3) in a direction perpendicular to the reference plane can be adjusted to complete the quantitative liquid injection.

[0053] It should be noted that, before quantitative liquid injection, the capacity of the first container (1) is measured, and the volume of liquid flowing out of the first container (1) when the liquid level is at different heights is also measured. When the atmospheric pressure connecting device (3) is adjusted to a certain height, a quantitative volume of liquid flows out of the first container (1), thereby achieving quantitative liquid injection only by adjusting the atmospheric pressure connecting device (3).

[0054] In certain embodiments, the present application further comprises a third valve (210), wherein the third valve (210) has a third valve inlet (201) and one or more third valve outlets, wherein the third valve inlet (201) is connected to the second container (2), and liquid overflowing into the second container (2) can be discharged through the third valve (210), so that after the first container (1) is refilled, it can be accurately known that the first container (1) is full, so that the liquid injection device (1000) can be reused.

[0055] In some embodiments the third valve (210) is a two-way valve. Figure 1 The first sub-valve 211 has a sub-valve outlet. At this time, the liquid in the second container (2) can be discharged through the third pipe (200). The first sub-valve controls the opening or closing of the third pipe (200), thereby controlling the discharge of the liquid in the second container (2).

[0056] In some embodiments, the third valve (210) is a three-way valve, see Figure 2The second sub-valve 220 has two sub-valve outlets, so that the liquid in the second container can be discharged through the first sub-pipe 230 or the second sub-pipe 240. The second sub-valve 220 can control the opening and closing of the first sub-pipe 230 or the second sub-pipe 240.

[0057] It should be noted that the third valve (210) may be a four-way valve or other multi-way valves. Any third valve (210) that can discharge the liquid in the second container (2) is within the protection scope of the present application and is not limited here.

[0058] In some embodiments, the present application further comprises a fourth valve (B01), the fourth valve (B01) is connected to the second container (2), and when the fourth valve (B01) is opened, atmospheric pressure is generated in the first container, and when the position of the atmospheric pressure connection device (3) is adjusted, the liquid in the first container (1) flows out through the first pipe (100) under the action of atmospheric pressure. In some embodiments, the fourth valve (B01) is connected to the second container (2) through a fourth pipe (B00), that is, the fourth valve (B01) is arranged on the fourth pipe (B00), and the fourth pipe (B00) is connected to the second container (2). When the fourth valve (B01) is opened, atmospheric pressure enters the container through the fourth pipe (B00), so that both the first container (1) and the second container (2) have atmospheric pressure.

[0059] In some embodiments, the present application further comprises a vacuum pipe (A00), wherein the vacuum pipe (A00) is connected to the second container (2), and the vacuum pipe (A00) is suitable for forming a vacuum state in the container. Since the liquid itself may contain bubbles, the bubbles may make the volume of the liquid inaccurate. Even if the liquid has been treated to remove bubbles before being poured into the first container (1), bubbles may still infiltrate the liquid during transportation or pouring. The addition of bubbles to the liquid before injection may make the injection amount inaccurate. Before injection, the liquid injection device (1000) of the present application opens the vacuum pipe (A00) and extracts the gas in the receiving chamber to form a vacuum in the container. At this time, the bubbles in the liquid can be completely removed, making the injection amount more accurate. It should be noted that in the actual liquid injection device (1000), a vacuum valve (A01) may be provided on the vacuum pipe (A00), and the vacuum valve (A01) may control the opening or closing of the vacuum pipe (A00). When the liquid injection device is not injecting liquid, the vacuum valve (A01) controls the vacuum pipeline (A00) to be closed. Before injecting liquid, the vacuum valve (A01) is opened to allow the liquid in the first container to expel bubbles before injecting liquid, thereby improving the accuracy of liquid injection.

[0060] In some embodiments, the present application further comprises a sensor (5), the sensor (5) being connected to the second container (2), and the sensor (5) being able to detect whether there is liquid in the second container (2). In some embodiments, the interior of the second container (2) cannot be seen visually, and in this case, it is necessary to use the sensor (5) to sense whether there is liquid in the second container (2). If there is liquid, it means that the liquid in the first container (1) has overflowed, that is, the first container (1) is full of liquid. It should be noted that since the liquid in the liquid injection device may be a corrosive liquid, the sensor (5) is generally installed on the outside of the second container to prevent the sensor (5) from being corroded by the liquid.

[0061] Combine the following Figure 1 An embodiment of a liquid injection device (1000) provided in the present application is described.

[0062] like Figure 1 As shown, in one embodiment of the present application, the container includes a first container (1) and a second container (2), the first container (1) includes a first top (11) and a first bottom (12), the second container (2) includes a second top (21), a second bottom (22), and a second peripheral wall (23), and the second peripheral wall (23) connects the second bottom (22) and the second top (21).

[0063] The second top portion (21) is provided with a vacuum pipeline (A00) and a fourth pipeline (B00), and the vacuum pipeline (A00) and the fourth pipeline (B00) are provided with a vacuum valve (A01) and a fourth valve (B01) respectively; the second bottom portion (22) is provided with a third pipeline (200), and the third pipeline (200) is provided with a first sub-valve (211), and a sensor (5) is provided on the second peripheral wall. An opening portion (13) is provided on the top of the first container (1), and the opening portion (13) is connected to the first container (1) and the second container (2). The first bottom portion (12) is provided with a first pipeline (100) and a second pipeline (300), wherein the first pipeline (100) is provided with a first valve (110), a regulating device (4), and an atmospheric pressure connecting device (3); and the second pipeline (300) is provided with a second valve (310). The liquid is injected into the first container (1) through the second pipe (300). After the first container (1) is filled, it overflows into the second container (2) through the opening (13). The sensor (5) senses that liquid has entered the second container (2). At this time, the second valve (310) is closed, and the second pipe (300) no longer injects liquid into the first container (1). The vacuum valve (A01) is opened to discharge all bubbles in the liquid in the container. At this time, the liquid volume accuracy is higher. After confirming the injection amount, the height of the atmospheric pressure connecting device (3) is adjusted through the adjusting device (4), and the first valve (110) and the fourth valve (B01) are opened. At this time, atmospheric pressure exists in the first container (1). Under the action of atmospheric pressure, the liquid in the first container (1) flows out from the first pipe (100), and the liquid flows out of the first outlet (102) for injection until the height of the liquid level in the first container and the height of the atmospheric pressure connecting device (3) are level in a direction perpendicular to the reference plane X, and the injection is stopped at this time. Of course, the adjustment of the atmospheric pressure connection device (3) can also be completed in the initial stage during the use of the liquid injection device (1000), that is, it is sufficient to complete the adjustment of the atmospheric pressure connection device (3) before liquid injection. After the liquid injection is completed, the first sub-valve (211) is opened, and the liquid in the second container (2) can be discharged through the third pipe (200); of course, the first sub-valve (211) can also be opened after closing the second valve (310) and before opening the vacuum valve (A01) to discharge the liquid in the second container (2). The liquid injection device (1000) of the present application does not need to use a quantitative pump, and quantitative liquid injection can be completed by adjusting the position of the atmospheric pressure connection device (3).

[0064] It should be noted that, in some embodiments, the first valve (110), the first sub-valve (211), the second valve (310), the vacuum valve (A01), and the fourth valve (B01) can all be controlled by a program, thereby completing the automated operation of the liquid injection device (1000), making the operation of the liquid injection device (1000) simpler and more intelligent. The present application does not impose any specific restrictions on the specific control method of the above valves.

[0065] In certain embodiments, the liquid injection device of the present application may be provided with a plurality of second pipes (300), and liquid may be simultaneously injected into the first container through the plurality of second pipes (300), in which case the liquid injection speed may be accelerated.

[0066] It should be noted that the first container (1) and the second container (2) can be regular cylindrical tanks or square cylinders. Any shape that can form a container cavity can be set as the first container (1) and the second container (2). The shapes of the first container (1) and the second container (2) are not necessarily the same. The first container (1) can be set in the second container (2). In some embodiments, the first container (1) and the second container (2) may also partially fit around the side walls. In this case, it is only necessary to ensure that the liquid in the first container (1) can overflow into the second container (2) through the opening (13). In some embodiments, the first top (11) can be a dome or other shapes. The function of the opening (13) is to allow the liquid to overflow. Generally, the opening (13) is arranged on the first top (11). At this time, the liquid needs to fill the first container (1). When the first top (11) is a dome, the shape of the edge of the opening is circular, and the area formed by the edge of the opening is smaller than the area of ​​the first bottom (12). At this time, the volume of the liquid in the first container (1) is more accurate. The more accurate the volume of the liquid in the first container, the more accurate the volume of the liquid discharged from the first pipe. However, the opening (13) can also be arranged on the side wall of the first container (1). At this time, the liquid will overflow when it does not fill the first container (1). The amount of liquid that can be contained in the first container (1) is reduced, but the liquid injection device (1000) of the present application can still achieve quantitative liquid injection. In some embodiments, the opening (13) may be an inclined notch, in which case the liquid will overflow from the lowest part of the opening (13), and the liquid level in the first container (1) will be level with the lowest part of the opening (13). Based on the measured volume of the liquid in the first container (1), quantitative injection can still be achieved, which will not be elaborated here.

[0067] It should be noted that the area of ​​the opening (13) should be larger than the cross-sectional area of ​​the second pipe (300), so that the liquid can be smoothly injected into the first container (1). If the area of ​​the opening (13) is smaller than the cross-sectional area of ​​the second pipe (300), when the first container (1) is filled, if the speed at which the liquid overflows the opening (13) is slower than the speed at which the liquid is injected into the second pipe (300), the injection pump (6) may be blocked, thereby damaging the injection pump (6).

[0068] The present application also provides a liquid injection device system, the liquid injection device system comprising at least one liquid injection pump (6) and at least one liquid injection device (1000) protected by the present application. Figure 2 One embodiment of a fluid infusion device system is described.

[0069] refer to Figure 1 and Figure 2 In certain embodiments, the injection device system of the present application includes a plurality of injection devices (1000) and an injection pump (6), and the injection pump can pump liquid into the injection device.

[0070] In some embodiments, the first tank body includes a first sub-tank body (8) and a second sub-tank body (9), the first sub-tank body (8) may be a liquid storage tank for storing liquid, and the second sub-tank body (9) may be a cleaning tank or a residual liquid tank. The first sub-tank body (8) and the second sub-tank body (9) are both connected to the liquid injection pump input port, and the liquid injection pump output port is connected to the manifold block input port. The liquid in the first sub-tank body (8) or the second sub-tank body (9) is pumped into the manifold block (7) through the liquid injection pump (6), and the manifold block output port is connected to a plurality of second pipes (300), thereby the liquid can be simultaneously pumped into the first container (1) of the plurality of liquid injection devices (1000) through the manifold block (7). After the liquid pumped into the first container (1) overflows from the opening (13) to the second container (2), the sensor (5) detects that the second container (2) overflows the liquid, and closes the corresponding second valve (310) of the liquid injection device (1000). After the liquid injection is completed, the second sub-valve (220) is controlled to open the first sub-pipeline (230) and close the second sub-pipeline (240), and the liquid in the second container (2) enters the first sub-tank (8) via the first sub-pipeline (230); if the second sub-valve (220) closes the first sub-pipeline (230) and opens the second sub-pipeline (240), the liquid in the second container (2) enters the second sub-tank (9) via the second sub-pipeline (240). By controlling the second sub-valve (220), the liquid overflowing from the open portion (13) can flow back to the corresponding tank, and no liquid waste will be caused.

[0071] In some embodiments, a sixth valve (901) is used to control the connection or disconnection between the first sub-tank (8) or the second sub-tank (9) and the injection pump (6), see Figure 2 The sixth valve (901) can control the opening or closing of the third sub-pipe (910) and the fourth sub-pipe (920). When the liquid in the first sub-tank (8) needs to be poured into the first container (1), the sixth valve (901) opens the third sub-pipe (910) and closes the fourth sub-pipe (920).

[0072] In some embodiments, see Figure 1 and Figure 2In order to prevent the injection pump (6) from continuing to pump liquid into the manifold block (7) after all the second valves (310) in the injection device system are closed, thereby causing the injection pump (6) to be blocked, a fifth pipeline (400) is arranged between the manifold block (7) and the first tank body, and a fifth valve (410) is arranged on the fifth pipeline (400). When all the second valves (310) are closed, the liquid pumped into the manifold block (7) by the injection pump (6) can flow into the first tank body through the fifth pipeline (400) and the first sub-pipeline (230), thereby preventing the injection pump (6) from being blocked and thus damaging the injection pump (6).

[0073] In some embodiments, the first tank body includes a plurality of tank bodies, in which case a plurality of fifth pipelines (400) and a plurality of fifth valves (410) may be provided. Figure 2 The first sub-tank (8) and the manifold block (7) are connected by a sixth sub-pipeline (600), and the third sub-valve (610) is arranged on the sixth sub-pipeline (600); the second sub-tank (9) and the manifold block (7) are connected by a seventh sub-pipeline (500), and the fourth sub-valve (510) is arranged on the seventh sub-pipeline (600). Thus, the opening or closing of the third sub-valve (610) and the fourth sub-valve (510) is determined according to the liquid in the manifold block, so that the liquid can flow back into the corresponding tank.

[0074] In some embodiments, when the second valve (310) is closed, liquid will be stored in the second pipeline (300) and the manifold block (7). When the injection device system needs to be cleaned, if the liquid in the manifold block (7) and the pipeline cannot be recovered, liquid waste will be caused. Therefore, in some embodiments, the fifth pipeline (400) can also achieve the function of recovering the liquid in the pipeline and the manifold block. Therefore, the fifth pipeline (400) can also be arranged between the injection pump output port and the first sub-tank (8). After the fifth valve (410) is opened, the liquid in the second pipeline (300) and the manifold block (7) will flow back to the first sub-tank (8) through the fifth pipeline (400), thereby realizing the recovery of the liquid in the pipeline and reducing liquid waste.

[0075] In some embodiments, a plurality of injection pumps (6) may be provided in the injection device system, and the plurality of injection pumps (6) may simultaneously pump liquid into the same manifold block (7), or may pump liquid into different manifold blocks (7). That is, the device may be provided with a plurality of manifold blocks (7) and a plurality of injection pumps (6), and the manifold blocks (7) and the injection pumps (6) may be provided correspondingly or not correspondingly, and the total power of the plurality of injection pumps (6) may satisfy the requirement of simultaneously filling all the injection devices (1000) in the injection device system with liquid at different rates.

[0076] The following is described by specific embodiments. Figure 2The liquid injection device system of the present application can simultaneously realize liquid injection and cleaning of the liquid injection device system and recovery of cleaning liquid. The second sub-tank body (9) can be a residual liquid tank for storing cleaning liquid or waste liquid. When the liquid injection device system has completed liquid injection and needs to be cleaned, the third sub-valve (610) can be opened first to recover the liquid in the pipeline and the manifold block to avoid liquid waste. After the liquid is recovered, the third sub-valve (610) is closed, and the sixth valve (901) is controlled to close the third sub-pipeline (910) and open the fourth sub-pipeline (920). The cleaning liquid in the second sub-tank body (9) is poured into the first container (1) through the manifold block (7) by the liquid injection pump (6). When the first container (1) is filled with cleaning liquid, the cleaning liquid overflows the opening (13) and flows into the second container (2). The first valve (110) is opened to allow the cleaning liquid to flow out through the first pipeline (100). At this time, the cleaning of the first pipeline (100), the manifold block and the container can be completed. The second sub-valve (220) is controlled to close the first sub-pipeline (230) and open the second sub-pipeline (240). At this time, the cleaning liquid in the second container (2) flows into the second sub-tank (9) through the second sub-pipeline (240). At this time, the cleaning of the second container (2) is completed. Repeating the above cleaning steps can complete the cleaning of the injection device system of the present application. In order to better clean the injection device system and more thoroughly recover the cleaning liquid in the pipeline, the injection device system also includes a seventh sub-pipeline (500) and a fourth sub-valve (510). The seventh sub-pipeline (500) is connected to the manifold block (7) and the second sub-tank (9). The fourth sub-valve (510) controls the opening and closing of the seventh sub-pipeline (500). When the second valve (310) is closed and the injection pump (6) is still running, the fourth sub-valve (510) is opened, and the cleaning liquid can flow into the residual liquid tank through the seventh sub-pipeline (500). At this time, the injection pump (6) can be effectively prevented from being blocked, thereby preventing the injection pump (6) from being damaged.

[0077] See also Figure 2 , the first sub-pipes (230) of the multiple liquid injection devices (1000) can be connected together and then connected to the first sub-tank (8). Of course, the first sub-pipes (230) of the multiple liquid injection devices (1000) can also be connected to the first sub-tank (8) separately. When the liquid injection device system is actually produced, it is sufficient to achieve the connection between the first sub-pipe (230) and the first sub-tank (8), and no specific restrictions are made here. It can be explained that the pipeline connection in this solution can be appropriately adjusted to each pipeline from the perspective of saving pipeline cost or facilitating installation, and the material cost of the pipeline can be saved while achieving the connection of each device, and no restrictions are made here.

[0078] In certain embodiments, the liquid injection device system does not include a manifold block (7), and the liquid in the second tank is directly poured into the first container (1) through the liquid injection pump (6).

[0079] In certain embodiments, the liquid injection device system does not include the first sub-tank (8), and its container can be used to replace the first sub-tank (8) during the actual liquid injection process.

[0080] In certain embodiments, the liquid injection device system does not include the second sub-tank (9), and its container can be used to replace the second sub-tank (9) during the actual liquid injection process.

[0081] With the continuous development of new energy vehicles, lithium batteries have been favored by the majority of users for their advantages such as high energy density, long service life, and strong high and low temperature adaptability, and high requirements are also placed on the performance of lithium batteries. As a carrier for ion transmission inside the battery, the electrolyte has a significant impact on the performance of the lithium battery. Therefore, the process of injecting electrolyte into the battery has become an important process in the battery production process. The injection device and injection device system of the present application can realize the injection of multiple batteries at the same time, and an ordinary injection pump can be used instead of a metering pump, and the injection amount of the battery can be controlled by controlling the atmospheric pressure connection device (3) of the injection device. Replacing the metering pump with an ordinary injection pump can reduce the cost of the injection device system.

[0082] Of course, the injection device and injection device system of the present application can not only realize electrolyte injection, but also realize other liquid injection, which is not specifically limited here.

[0083] It should be noted that the connections in the present application can all be made using pipes to achieve the circulation of liquids, and no specific restrictions are made here.

[0084] The various embodiments or implementation methods in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referenced to each other.

[0085] It should be noted that the embodiments represented by "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments", etc. mentioned in the specification may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing specific features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments that are explicitly or not explicitly described.

[0086] In general, terms should be understood, at least in part, by the context in which they are used. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in a singular sense, or may be used to describe a combination of features, structures, or characteristics in a plural sense, depending, at least in part, on the context. Similarly, terms such as "a," "an," or "the" may also be understood to convey singular usage or to convey plural usage, depending, at least in part, on the context.

[0087] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A liquid injection device (1000), applied to a liquid injection device system, characterized in that: The liquid injection device (1000) comprises: A receiving member, wherein a receiving cavity is formed inside the receiving member; A first pipeline (100) comprising a first inlet (101) and a first outlet (102), wherein the first inlet (101) is connected to the container, and the first outlet (102) is suitable for injecting liquid; An atmospheric pressure connection device (3) is arranged on the first pipeline (100), and the atmospheric pressure connector is suitable for adjusting the height from the reference plane in a direction perpendicular to the reference plane to adjust the distance between the atmospheric pressure connector and the liquid level in the container in the direction perpendicular to the reference plane.

2. The liquid injection device (1000) according to claim 1, characterized in that: The liquid injection device (1000) further comprises a first valve (110), wherein the first valve (110) is arranged on the first pipeline (100), and the first valve (110) is arranged between the first inlet (101) and the atmospheric pressure connection device (3), and the first valve (110) is suitable for controlling the opening or closing of the first pipeline (100).

3. The liquid injection device (1000) according to claim 2, characterized in that: The distance between the side of the first valve (110) closest to the atmospheric pressure connection device (3) and the side of the atmospheric pressure connection device (3) closest to the first valve (110) on the first pipeline is in the range of 8 mm to 20 mm.

4. The liquid injection device (1000) according to claim 1, characterized in that: The liquid injection device (1000) further comprises a second valve (310), wherein the second valve (310) is connected to the container and is suitable for injecting liquid into the container chamber through the second valve (310).

5. The liquid injection device (1000) according to claim 1, characterized in that: The liquid injection device (1000) further comprises an adjusting device (4), wherein the adjusting device (4) is connected to the first pipeline (100) or the atmospheric pressure connecting device (3), and the adjusting device (4) is suitable for adjusting the distance between the atmospheric pressure connecting device (3) and the reference plane in a direction perpendicular to the reference plane.

6. The liquid injection device (1000) according to claim 1, characterized in that: The container comprises a first container (1) and a second container (2), wherein the first container (1) is placed in the second container (2); The first container (1) comprises an opening (13), and the opening (13) connects the first container (1) and the second container (2).

7. The liquid injection device (1000) according to claim 6, characterized in that: A plane formed by the edges of the opening is parallel to the reference plane.

8. The liquid injection device (1000) according to claim 6, characterized in that: The area enclosed by the edges of the opening (13) is larger than the cross-sectional area of ​​the first inlet (101).

9. The liquid injection device (1000) according to claim 6, characterized in that: The shape formed by the edges of the opening portion is a circle.

10. The liquid injection device (1000) according to claim 6, characterized in that: It also includes a second pipe (300) and a second valve (310), wherein the second pipe (300) connects the first container (1) and the second valve (310), and the second valve (310) is suitable for controlling the opening or closing of the second pipe (300).

11. The liquid injection device (1000) according to claim 6, characterized in that: The liquid injection device (1000) further comprises a third valve (210), wherein the third valve (210) comprises a third valve inlet (201) and one or more third valve outlets, wherein the third valve inlet (201) is connected to the second container (2), and the third valve outlet is suitable for allowing the liquid in the second container (2) to flow out; the third valve (210) is suitable for controlling the liquid in the second container (2) to flow out through one or more third valve outlets.

12. The liquid injection device (1000) according to claim 11, characterized in that: The invention also comprises a third pipeline (200), wherein the third pipeline (200) connects the third valve inlet (201) and the second container (2).

13. The liquid injection device (1000) according to claim 6, characterized in that: The liquid injection device (1000) further comprises a fourth valve (B01), wherein the fourth valve (B01) is connected to the second container (2), and the fourth valve (B01) is suitable for connecting the second container (2) to atmospheric pressure.

14. The liquid injection device (1000) according to claim 13, characterized in that: The liquid injection device (1000) further comprises a fourth pipeline (B00), wherein the fourth pipeline (B00) connects the second container (2) and the fourth valve (B01), and the fourth valve (B01) is suitable for controlling the opening or closing of the fourth pipeline (B00).

15. The liquid injection device (1000) according to claim 6, characterized in that: The liquid injection device (1000) further comprises a vacuum pipe (A00), wherein the vacuum pipe (A00) is connected to the second container (2), and the vacuum pipe (A00) is suitable for forming a vacuum in the container.

16. The liquid injection device (1000) according to claim 15, characterized in that: The liquid injection device (1000) further comprises a vacuum valve (A01), wherein the vacuum valve (A01) is arranged on the vacuum pipeline (A00), and the vacuum valve (A01) is suitable for controlling the opening or closing of the vacuum pipeline (A00).

17. The liquid injection device (1000) according to claim 6, characterized in that: The liquid injection device (1000) further comprises a sensor (5), wherein the sensor (5) is connected to the second container (2), and the sensor (5) is suitable for detecting whether there is liquid in the second container (2).

18. The injection device according to any one of claims 2 to 17, characterized in that: The first container (1) comprises a first top (11) and a first bottom (12), and the second container (2) comprises a second top (21), a second bottom (22), and a second peripheral wall (23), wherein the second peripheral wall (23) connects the second bottom (22) and the second top (21).

19. The liquid injection device (1000) according to claim 18, characterized in that: The first top (11) is a dome structure.

20. The liquid injection device (1000) according to claim 18, characterized in that: The invention comprises a first pipeline (100), wherein the first pipeline (100) comprises a first inlet (101) and a first outlet (102), and the first inlet (101) is connected to the first bottom (12).

21. The liquid injection device (1000) according to claim 18, characterized in that: It comprises a second pipe (300), wherein the second pipe (300) is connected to the first bottom (12).

22. The liquid injection device (1000) according to claim 18, characterized in that: It comprises a third pipe (200), wherein the third pipe (200) is connected to the second bottom (22).

23. The liquid injection device (1000) according to claim 18, characterized in that: A fourth pipe (B00) is included, and the fourth pipe (B00) is connected to the second top (21).

24. The liquid injection device (1000) according to claim 18, characterized in that: It comprises a vacuum pipe (A00), wherein the vacuum pipe (A00) is connected to the second top (21).

25. The liquid injection device (1000) according to claim 18, characterized in that: The container comprises a first container (1), the first container comprises an opening portion (13), and the opening portion (13) is arranged at the first top portion (11).

26. The liquid injection device (1000) according to claim 18, characterized in that: It comprises a sensor (5), wherein the sensor (5) is arranged on the second peripheral wall (23).

27. A liquid injection device system, characterized in that: The injection device system includes at least one injection pump (6) and at least one injection device (1000) as described in any one of claims 1 to 26, wherein the injection pump (6) includes an injection pump input port and an injection pump output port, wherein the injection pump output port is connected to the container, and the injection pump (6) is suitable for pumping liquid into the container.

28. The liquid injection device system according to claim 27, characterized in that: The injection device system further comprises at least one manifold block (7), wherein the manifold block (7) comprises at least one manifold block input port and at least two manifold block output ports; The liquid injection device comprises a first container (1) and a second valve (310), wherein the second valve (310) is connected to the first container (1) and is suitable for injecting liquid into the containing chamber through the second valve (310); The manifold block input port is connected to the injection pump output port, and the manifold block output port is connected to the second valve (310); the injection pump (6) is suitable for pumping liquid into the first container (1) through the manifold block (7) and the second valve (310) in sequence.

29. The liquid injection device system according to claim 28, characterized in that: Each of the manifold blocks (7) is suitable for connecting a plurality of the injection pumps (6); and / or The manifold block (7) is suitable for connecting a plurality of the second valves (310).

30. The liquid injection device system according to claim 28, characterized in that: The liquid injection device system further comprises at least one first tank body, the liquid injection device comprises a third valve (210), and the first tank body is connected to an output port of the third valve (210); and / or The first tank body comprises at least one tank body output port, the tank body output port is connected to the liquid injection pump input port, and the first tank body is suitable for inputting liquid into the liquid injection pump.

31. The liquid injection device system according to claim 30, characterized in that: The liquid injection device system further comprises at least one fifth pipeline (400) and at least one fifth valve (410), wherein the fifth pipeline (400) is suitable for connecting the manifold block (7) and the first tank body; the fifth valve (410) is arranged on the fifth pipeline (400), and the fifth valve (410) is suitable for controlling the opening and closing of the fifth pipeline (400).

32. The liquid injection device system according to claim 27, characterized in that: The injection device system further comprises a second tank body, wherein the second tank body is suitable for connecting to the injection pump input port; and / or The second tank is suitable for connecting to the output port of the injection pump; and / or The liquid injection device (1000) comprises a third valve (210), and the second tank body is connected to an output port of the third valve.

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