Mobile injection device

Abstract

This application discloses a mobile liquid injection device, including a mobile support frame with a movable structure at the bottom for moving the device; and an injection assembly comprising a liquid pump, a vacuum pump, a liquid passage pipe, a vacuum pipe, an injection pipe, and a filling pipe, wherein the liquid pump, vacuum pump, liquid passage pipe, and vacuum pipe are detachably fixed to the mobile support frame; the liquid pump is connected to one end of the liquid passage pipe, the vacuum pump is connected to one end of the vacuum pipe, the injection pipe connects the other end of the liquid passage pipe and the other end of the vacuum pipe, and the filling pipe connects to the liquid pump. This application integrates all injection components into one unit, facilitating storage and retrieval, saving assembly time, and improving injection efficiency.

Description

Technical Field

[0001] This application relates to the field of liquid injection device technology, and specifically to a mobile liquid injection device. Background Technology

[0002] Equipment requiring liquid filling, such as liquid coolers, typically requires devices such as vacuum pumps, liquid filling pumps, and liquid filling pump switches. However, these devices must be transported to the filling site and reassembled before each filling, which is time-consuming, labor-intensive, and inefficient. Summary of the Invention

[0003] To address the aforementioned technical problems, this application provides a mobile liquid injection device that integrates various liquid injection components into one unit, facilitating storage and retrieval, saving assembly time, and improving liquid injection efficiency.

[0004] The specific technical solution provided in this application is as follows:

[0005] A mobile liquid injection device is provided, comprising:

[0006] The mobile support includes a movable structure at the bottom, which is used to move the mobile injection device.

[0007] The liquid injection assembly includes a liquid injection pump, a vacuum pump, a liquid flow line, a vacuum line, an injection pipe, and a filling pipe, wherein:

[0008] The liquid pump, vacuum pump, liquid supply pipeline, and vacuum pipeline can be detachably fixed on the mobile support;

[0009] The liquid pump is connected to one end of the liquid supply pipeline, the vacuum pump is connected to one end of the vacuum pipeline, the liquid injection pipe is used to connect the other end of the liquid supply pipeline and the other end of the vacuum pipeline, and the liquid addition pipe is used to connect the liquid pump.

[0010] As a preferred embodiment of the above solution, the movable support includes multiple support rods connected to form a frame structure, and the movable structure includes rollers disposed at one end of the bottom of the frame structure.

[0011] The bottom of the frame structure, away from the rollers, has a lifting and fixing structure at the other end.

[0012] As a preferred embodiment of the above scheme, the support rod includes a first support rod and a second support rod extending along a first direction and distributed on both sides of the movable support, and a third support rod and a fourth support rod extending along a second direction and distributed on both sides of the movable support.

[0013] The first support rod and the second support rod are arranged along the second direction, with the first support rod located on one side of the roller and the second support rod located on one side of the lifting fixed structure.

[0014] The third and fourth support rods are arranged along the first direction. One end of the third support rod is fixedly connected to the upper part of the first support rod, and one end of the fourth support rod is fixedly connected to the lower end of the first support rod. The two ends of the second support rod are respectively fixedly connected to the other ends of the third and fourth support rods.

[0015] As a preferred embodiment of the above solution, the lower end of the second support rod is provided with a mounting rod extending in a third direction on its side wall, and the roller is located at the end of the mounting rod away from the second support rod.

[0016] The fixed structure includes a lifting screw and a supporting chassis. The lifting screw is threaded to the end of the fourth support rod away from the roller, and the supporting chassis is fixed to the lower end of the lifting screw.

[0017] As a preferred embodiment of the above scheme, the liquid pump can be detachably fixed on the second support rod, and the vacuum pump can be detachably fixed on the fourth support rod;

[0018] The liquid passage and vacuum passage can be detachably fixed to the third support rod.

[0019] As a preferred embodiment of the above solution, the liquid injection assembly also includes a transformer power supply, a liquid injection pump switch and a vacuum tube. The transformer power supply is connected to the liquid injection pump through the liquid injection pump switch. The transformer power supply and the liquid injection pump switch are detachably fixed on the third support rod.

[0020] One end of the vacuum tube is connected to the vacuum pump, and the other end is connected to the vacuum pipeline. The vacuum tube is wound around the third support rod.

[0021] As a preferred embodiment of the above solution, the liquid injection assembly further includes a gas-liquid separator assembly, which includes a gas-liquid separator connected to a vacuum pipeline; the gas-liquid separator includes a connector and a cup body, the connector being connected to the vacuum pipeline and threadedly connected to the cup body.

[0022] As a preferred embodiment of the above solution, the gas-liquid separator assembly also includes a cup body removal handle, which is used to remove and install the cup body from the connector.

[0023] As a preferred embodiment of the above solution, the liquid injection assembly further includes a liquid injection shut-off valve, a first vacuum shut-off valve, and a second vacuum shut-off valve. The liquid injection shut-off valve is connected between the liquid injection pump and the liquid flow pipeline, the first vacuum shut-off valve is connected between the vacuum pump and the vacuum pipeline, and the second vacuum shut-off valve is connected to the vacuum pipeline.

[0024] As a preferred embodiment of the above solution, the injection assembly further includes:

[0025] A three-way pipe and a pressure relief and liquid discharge valve are connected between the injection pipe and the liquid supply pipe and the vacuum pipe respectively through the three-way pipe.

[0026] The system includes a filter, a first quick-connect fitting, and a second quick-connect fitting. The filter is connected between the liquid pump and the liquid filling pipe. The filter is connected to the liquid filling pipe via the first quick-connect fitting, and the liquid filling pipe is connected to the pressure relief and discharge valve via the second quick-connect fitting.

[0027] This application integrates the liquid injection components into a single mobile bracket, facilitating storage and retrieval, and saving assembly time. The mobile bracket features a movable structure that drives the mobile liquid injection device. When liquid injection is needed, the mobile bracket is simply moved to the injection point. Then, a vacuum is created by the cooperation of a vacuum pump, vacuum pipe, and liquid injection pipe. The system's airtightness is checked and negative pressure is generated. After maintaining the vacuum for a period of time and confirming that there are no leaks, liquid injection begins through the cooperation of a liquid filling pipe, liquid filling pump, liquid flow pipe, and liquid injection pipe. Liquid injection is convenient and highly efficient. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a top view of the structure of this application;

[0030] Figure 2 This is a schematic diagram of the front structure of this application;

[0031] Figure 3 This is a schematic diagram of the rear view structure of this application;

[0032] Figure 4 This is a schematic diagram of the right-side structure of the movable support of this application.

[0033] Figure 5 This is a schematic diagram of the left-side structure of the movable support of this application. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in 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, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0035] It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as "connected to" another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," "upper," "lower," "inner," "outer," and "bottom," etc., used in this specification indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] A battery cluster in an energy storage system is a module composed of multiple battery cells used to store and provide electrical energy. During charging and discharging, the battery cluster generates a significant amount of heat, requiring an effective cooling system to maintain the temperature within a safe range. Liquid cooling cabinets absorb the heat generated by the battery clusters through a circulating coolant (such as water or ethylene glycol solution), achieving precise temperature control.

[0037] Filling a liquid coolant tank with coolant requires equipment such as a vacuum pump and a liquid filling pump. However, each time the coolant tank is filled with coolant, these devices need to be taken to the filling point and reassembled, which is time-consuming, labor-intensive, and inefficient.

[0038] In addition, liquid filling of the liquid cooler requires the use of a vacuum pump for vacuuming. However, if there is residual liquid in the liquid cooler, the liquid in the gas-liquid mixture can easily enter the vacuum pump during vacuuming, thus damaging the vacuum pump.

[0039] To address the aforementioned technical problems, this application provides a mobile liquid injection device that integrates liquid injection components such as a liquid pump and a vacuum pump onto a mobile support. This facilitates storage and retrieval, saves assembly time, and allows for vacuuming and liquid injection simply by moving the mobile support to the injection point. Liquid injection is convenient and highly efficient. By connecting a gas-liquid separator to the vacuum pipeline, the gas-liquid separator can separate the liquid from the gas-liquid mixture during vacuuming, preventing liquid from entering the vacuum pump and damaging it.

[0040] The mobile injection device described in this application, such as... Figure 1As shown, the device includes a movable support 1 and an injection assembly 2. The movable support 1 includes a movable structure 3 at the bottom, which is used to move the movable injection device. The injection assembly 2 includes a liquid pump 21, a vacuum pump 22, a liquid passage pipe 23, a vacuum pipe 24, an injection pipe 25, and a liquid filling pipe 26. The liquid pump 21, vacuum pump 22, liquid passage pipe 23, and vacuum pipe 24 are detachably fixed to the movable support 1. The liquid pump 21 is connected to one end of the liquid passage pipe 23, the vacuum pump 22 is connected to one end of the vacuum pipe 24, the injection pipe 25 is used to connect the other end of the liquid passage pipe 23 and the other end of the vacuum pipe 24, and the liquid filling pipe 26 is used to connect the liquid pump 21.

[0041] like Figure 1 , Figure 3 As shown, the upper end of the connector 41 is fixed to the movable bracket 1 by a threaded assembly. Threaded joints can be provided on the left and right sides of the connector 41, which are connected to the vacuum pipe 24. The connector 41 is internally connected to the vacuum pipe 24. An internal thread (not shown) can be provided at the bottom of the connector 41, and an external thread (not shown) can be provided at the upper end of the cup body 42. The cup body 42 is detachably and fixedly connected to the connector 41 by tightening the external thread onto the internal thread. A drain port 43 can be provided at the bottom of the cup body 42. The cup body 42 can be designed as a cylindrical structure. The cup body disassembly and assembly handle 5 can include a circular socket 51 and a disassembly and assembly handle 52. The outer diameter of the cup body cross section matches the diameter of the socket 51. The inner wall of the socket 51 can be provided with a protruding structure to facilitate the disassembly and assembly of the cup body 42. When in use, hold the disassembly and assembly handle 52 and put the socket 51 on the cup body 42. Then, align the external thread on the cup body 42 with the internal thread of the connector 41. By rotating the cup body 42, the cup body 42 can be installed on the connector 41. When disassembling, hold the disassembly and assembly handle 52 and rotate the cup body 42 in the opposite direction to separate the cup body from the connector 41.

[0042] like Figure 1 As shown, in one embodiment, the movable support 1 includes multiple support rods connected to form a frame structure, and the movable structure 3 includes a roller 3 disposed on one side of the support rod; the bottom of the support rod away from the roller 3 is provided with a lifting and fixing structure 6.

[0043] like Figure 2 As shown, in one embodiment, the support rod includes a first support rod 11 and a second support rod 12 extending along a first direction and distributed on both sides of the movable support 1, and a third support rod 13 and a fourth support rod 14 extending along a second direction and distributed on both sides of the movable support 1; one end of the third support rod 13 is fixedly connected to the upper part of the first support rod 11, one end of the fourth support rod 14 is fixedly connected to the lower end of the first support rod 11, and both ends of the second support rod 12 are fixedly connected to the third support rod 13 and the fourth support rod 14 respectively.

[0044] Specifically, the first support rod 11 and the second support rod 12 are arranged along a second direction. The first support rod 11 is located on one side of the roller 3, and the second support rod 12 is located on one side of the lifting fixed structure 6. The third support rod 13 and the fourth support rod 14 are arranged along a first direction. One end of the third support rod 13 is fixedly connected to the upper part of the first support rod 11, and one end of the fourth support rod 14 is fixedly connected to the lower end of the first support rod 11. The two ends of the second support rod 12 are fixedly connected to the other ends of the third support rod 13 and the fourth support rod 14, respectively.

[0045] like Figure 1 , Figure 4 , Figure 5 As shown, in one embodiment, the lower end of the second support rod 12 is provided with a mounting rod 15 extending in a third direction relative to its side wall, and the roller 3 is disposed at the end of the mounting rod 15 away from the second support rod 12; the fixing structure 6 includes a lifting screw 61 extending in a first direction and a supporting base 62, the lifting screw 61 is threadedly connected to the end of the fourth support rod 14 away from the roller 3, and the supporting base 62 is fixed to the lower end of the lifting screw 61.

[0046] like Figure 2 , Figure 4 As shown, the first direction can be the z-axis direction, that is, along the height direction of the first support rod 11 and the second support rod 12; the second direction can be the x-axis direction, that is, along the length direction of the third support rod 13 and the fourth support rod 14; and the third direction can be the y-axis direction, that is, along the length direction of the handle rod 16. The first support rod 11 and the second support rod 12 can be arranged in parallel, and the third support rod 13 and the fourth support rod 14 can be arranged in parallel. The first support rod 11, the second support rod 12 and the third support rod 13, the fourth support rod 14 can be perpendicularly connected, and a reinforcing rib 17 can be fixedly connected at the perpendicular connection position to enhance the stability of the entire movable support 1. A handle rod 16 extending along the third direction is provided on the upper side wall opposite to the first support rod 11. The surface of the handle rod 16 can be covered with a rubber material for easy gripping.

[0047] like Figure 1 As shown, in one embodiment, the liquid injection assembly 2 further includes a gas-liquid separator assembly, which includes a gas-liquid separator 4 connected to the vacuum pipe 24.

[0048] like Figure 1 , Figure 3 As shown, in one embodiment, the gas-liquid separator 4 includes a connector 41 and a cup body 42. The connector 41 is connected to the vacuum pipe 24 and threadedly connected to the cup body 42. The gas-liquid separator assembly also includes a cup body removal handle 5, which is used to remove and install the cup body 42 from the connector 41.

[0049] The gas-liquid separator 4 can be any existing gas-liquid separator structure, such as a gravity settling separator, a cyclone separator, a wire mesh demister, or a baffle separator. In this embodiment, a simple gas-liquid separator 4 is used. When a vacuum is applied, the gas-liquid mixture passes through the vacuum pipe 24 and then through the connector 41. The liquid in the gas-liquid mixture will fall into the cup 42 due to gravity, thereby achieving gas-liquid separation.

[0050] like Figure 1 , Figure 2 As shown, in one embodiment, the liquid pump 21 is detachably fixed to the second support rod 12, and the vacuum pump 22 is detachably fixed to the fourth support rod 14; the liquid passage 23 and the vacuum passage 24 are detachably fixed to the third support rod 13. The liquid pump 21, vacuum pump 22, liquid passage 23, and vacuum passage 24 can be detachably fixed to their respective support rods by means of an additional fixing plate (not shown) engaging with a threaded assembly (not shown). In another embodiment, a reinforcing rod (not shown) extending in a first direction can be fixedly connected between the third support rod 13 and the fourth support rod 14. The reinforcing rod is located on the side of the liquid pump 21, and the liquid pump 21 is fixed to the reinforcing rod by a threaded assembly.

[0051] like Figure 2 , Figure 3 As shown, in one embodiment, the liquid injection assembly 2 further includes a transformer power supply 27, a liquid injection pump switch 28, and a vacuum tube 29. The transformer power supply 27 is connected to the liquid injection pump 21 through the liquid injection pump switch 28. The transformer power supply 27 and the liquid injection pump switch 28 are detachably fixed on the third support rod 13. One end of the vacuum tube 29 is connected to the vacuum pump 22, and the other end is connected to the vacuum pipe 24. The vacuum tube 29 is wound around the third support rod 13 for easy storage.

[0052] The existing liquid pump 21 is typically powered by 24V, while the vacuum pump 22 is powered by 220V. The vacuum pump 22 has a built-in switch. Therefore, the transformer power supply 27 is connected to the liquid pump 21 via the liquid pump switch 28, converting the 220V voltage to 24V for the liquid pump 21. The transformer power supply 27 is an AC-DC converter. The transformer power supply 27 has a conductive wire and connector (not shown) for connecting to a 220V power supply. The vacuum pump 22 is connected to the same socket as the input terminal of the transformer power supply 27, so that the liquid pump 21 and the vacuum pump 22 can be powered simultaneously when energized. Figure 2 As shown, the liquid pump switch 28 is equipped with an illuminated button 281. When the button 281 is pressed, the light illuminates, indicating that both the liquid pump 21 and the vacuum pump 22 are powered on.

[0053] Additionally, the liquid pump switch 28 can be fixed to the top surface of the third support rod 13, and can be a cubic structure, such as... Figure 1 , Figure 2As shown, when not in use, the cup body disassembly handle 5 of the gas-liquid separator assembly can be fitted with its socket 51 onto the slightly smaller liquid pump switch 28, which makes it convenient to store the cup body disassembly handle 5 and prevent it from being lost.

[0054] like Figure 1 As shown, in one embodiment, the liquid injection assembly 2 further includes a liquid injection shut-off valve 7, a first vacuum shut-off valve 71, and a second vacuum shut-off valve 72. The liquid injection shut-off valve 7 is connected between the liquid injection pump 21 and the liquid supply pipe 23. The first vacuum shut-off valve 71 is connected between the vacuum pump 22 and the vacuum pipe 24. The second vacuum shut-off valve 72 is connected to the vacuum pipe 24. Since both ends of the vacuum tube 29 are usually connected to the vacuum pump 22 and the vacuum pipe 24 through simple quick-connect couplings (not shown), the airtightness is insufficient. Therefore, two vacuum shut-off valves—the first vacuum shut-off valve 71 and the second vacuum shut-off valve 72—are provided. The first vacuum shut-off valve 71 is connected between the vacuum pump 22 and the vacuum pipe 24, which effectively improves the sealing performance.

[0055] like Figure 1 As shown, in one embodiment, the liquid injection assembly 2 further includes a three-way pipe 73, a pressure relief and drain valve 74, a filter 75, a first quick-connect fitting 81, and a second quick-connect fitting 82. The liquid injection pipe 25 is connected to the liquid supply pipe 23 and the vacuum pipe 24 via the three-way pipe 73, and the pressure relief and drain valve 74 is connected between the liquid injection pipe 25 and the three-way pipe 73. The filter 75 is connected between the liquid injection pump 21 and the liquid injection pipe 26. The filter 75 is connected to the liquid injection pipe 26 via the first quick-connect fitting 81, and the liquid injection pipe 25 is connected to the pressure relief and drain valve 74 via the second quick-connect fitting 82. The filter 75 is used to filter impurities in the coolant, preventing impurities from entering the liquid injection pump 21 and the liquid cooler.

[0056] like Figure 3 As shown, in one embodiment, the liquid injection assembly 2 further includes a vacuum gauge 9 connected to the vacuum pipe 24, which is used to monitor the vacuum level of the system in real time.

[0057] The aforementioned movable bracket 1, fixing plate, reinforcing rod, reinforcing rib 17, and wrapping layer can be manufactured by recycling waste materials. For example, waste profiles can be used as support rods, fixing plates, reinforcing rods, and reinforcing ribs 17, and waste rubber materials can be used as the wrapping layer of the handle 16. This can effectively reduce production costs.

[0058] In use, first lift the fixed structure 6 at the bottom of the support rod 11 using the handle 16 on the first support rod 11, then use the roller 3 to push the entire movable support 1 to the liquid filling point of the liquid cooler. Then lower the movable support 1 and rotate the lifting screw 61 to lower the support base 62 and press it firmly onto the ground, thereby positioning the movable support 1. Next, connect one end of the liquid filling pipe 26 to the filter 75 through the first quick connector 81, and connect the other end of the liquid filling pipe 26 to the liquid storage device. Connect one end of the liquid filling pipe 25 to the pressure relief and liquid drain valve 74 through the second quick connector 82, and connect the other end of the liquid filling pipe 25 to the liquid cooler. Close the liquid filling valve 7 and the pressure relief and liquid drain valve 74, open the first vacuum valve 71 and the second vacuum valve 72, and start the vacuum pump 22 to extract the air from the liquid cooler and battery pack. During vacuuming, the gas-liquid separator 4 will separate the liquid in the gas-liquid mixture passing through the vacuum pipe 24, allowing only dry gas to enter the vacuum pump 22, protecting the vacuum pump 22 from liquid corrosion. During vacuuming, observe vacuum gauge 9 and evacuate to the target vacuum level. After evacuation, maintain the vacuum state for a period of time to confirm that the system has no leaks. Then, close the first vacuum valve 71 and the second vacuum valve 72, stop the vacuum pump 22, open the liquid injection valve 7, press button 281 on the liquid injection pump switch 28 to start the liquid injection pump 21, and begin liquid injection. After reaching the target liquid level, close the liquid injection pump switch 28 to stop liquid injection, close the liquid injection valve 7, and disconnect the liquid injection pipe 25. If pressure relief and liquid drainage are required, open the pressure relief and liquid drainage valve 74 to release the pressure in the liquid injection pipe 25 and drain the residual liquid.

[0059] This application integrates the liquid injection component 2 into a single unit on the mobile bracket 1, making it convenient to store and retrieve, and saving assembly time. The mobile bracket 1 is equipped with a movable structure 3, which is used to move the mobile liquid injection device. When liquid injection is needed, the mobile bracket 1 is simply moved to the liquid injection point. Then, the vacuum pump 22, vacuum pipe 24 and liquid injection pipe 25 work together to create a vacuum, check the system's airtightness and generate negative pressure. After maintaining the vacuum for a period of time, if it is confirmed that there is no leakage in the system, liquid injection is started through the cooperation of the liquid addition pipe 26, liquid addition pump 21, liquid flow pipe 23 and liquid injection pipe 25. Liquid injection is convenient and efficient.

[0060] Although preferred embodiments have been described in this application, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of this application.

[0061] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A mobile liquid injection device, characterized in that, include: A movable support, comprising a movable structure at the bottom, the movable structure being used to move the movable injection device; The liquid injection assembly includes a liquid injection pump, a vacuum pump, a liquid flow pipeline, a vacuum pipeline, an injection pipe, and a liquid filling pipe, wherein: The liquid pump, the vacuum pump, the liquid passage pipe, and the vacuum pipe are detachably fixed to the movable bracket; The liquid pump is connected to one end of the liquid-passing pipe, the vacuum pump is connected to one end of the vacuum pipe, the liquid injection pipe is used to connect the other end of the liquid-passing pipe and the other end of the vacuum pipe, and the liquid filling pipe is used to connect the liquid pump.

2. The mobile liquid injection device according to claim 1, characterized in that, The movable support includes multiple support rods connected to form a frame structure, and the movable structure includes rollers disposed at one bottom end of the frame structure; A lifting and fixing structure is provided at the other end of the bottom of the frame structure away from the roller.

3. The mobile liquid injection device according to claim 2, characterized in that, The support rod includes: a first support rod, a second support rod, a third support rod, and a fourth support rod; The first support rod and the second support rod are arranged along the second direction and extend along the first direction. The first support rod is arranged on one side of the roller, and the second support rod is arranged on one side of the lifting fixed structure. The third and fourth support rods are arranged along the first direction and extend along the second direction. One end of the third support rod is fixedly connected to the upper part of the first support rod, and one end of the fourth support rod is fixedly connected to the lower end of the first support rod. The two ends of the second support rod are respectively fixedly connected to the other ends of the third and fourth support rods.

4. The mobile liquid injection device according to claim 3, characterized in that, The lower end of the second support rod is provided with a mounting rod extending in a third direction on its side wall, and the roller is disposed at the end of the mounting rod away from the second support rod; The fixing structure includes a lifting screw and a supporting chassis. The lifting screw is threadedly connected to the end of the fourth support rod away from the roller, and the supporting chassis is fixed to the lower end of the lifting screw.

5. The mobile liquid injection device according to claim 3, characterized in that, The liquid pump is detachably fixed to the second support rod, and the vacuum pump is detachably fixed to the fourth support rod; The liquid-passing pipe and the vacuum pipe are detachably fixed to the third support rod.

6. The mobile liquid injection device according to claim 5, characterized in that, The liquid injection assembly also includes: a transformer power supply, a liquid injection pump switch and a vacuum tube. The transformer power supply is connected to the liquid injection pump through the liquid injection pump switch. The transformer power supply and the liquid injection pump switch are detachably fixed to the third support rod. One end of the vacuum tube is connected to the vacuum pump, and the other end is connected to the vacuum pipeline. The vacuum tube is wound around the third support rod.

7. The mobile liquid injection device according to claim 1, characterized in that, The liquid injection assembly also includes a gas-liquid separator assembly, which is connected to the vacuum pipeline. The gas-liquid separator includes a connector and a cup body, the connector being connected to the vacuum pipe and threadedly connected to the cup body.

8. The mobile liquid injection device according to claim 7, characterized in that, The gas-liquid separator assembly also includes a cup body removal handle, which is used to remove and install the cup body from the connector.

9. The mobile liquid injection device according to claim 1, characterized in that, The liquid injection assembly further includes: a liquid injection shut-off valve, a first vacuum shut-off valve, and a second vacuum shut-off valve; The liquid injection valve is connected between the liquid injection pump and the liquid supply pipe, the first vacuum valve is connected between the vacuum pump and the vacuum pipe, and the second vacuum valve is connected to the vacuum pipe.

10. The mobile liquid injection device according to claim 1, characterized in that, The liquid injection assembly also includes: a three-way pipe and a pressure relief and liquid discharge valve; The injection pipe is connected to the liquid passage pipe and the vacuum pipe respectively through the tee pipe, and the pressure relief and liquid discharge valve is connected between the injection pipe and the tee pipe; The system includes a filter, a first quick-connect fitting, and a second quick-connect fitting. The filter is connected between the liquid pump and the liquid filling pipe. The filter is connected to the liquid filling pipe via the first quick-connect fitting, and the liquid filling pipe is connected to the pressure relief and discharge valve via the second quick-connect fitting.

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