Accurate pumping equipment for defoaming and buffering chemical liquid

Abstract

The utility model discloses a device for defoaming, buffering and accurately pumping chemical liquid. The device comprises a liquid supply tank, a liquid storage tank A and a liquid storage tank B, wherein hollow spaces are formed in the liquid supply tank, and the liquid storage tank A and the liquid storage tank B can conduct defoaming on the chemical liquid; and the pump set is used for pumping and injecting the electrolyte in the liquid tank and is communicated with the outlet of the liquid supply tank through a liquid injection pipe. When the liquid supply tank pumps the electrolyte through the pump set for follow-up injection, the liquid storage tank A and the liquid storage tank B alternately and continuously supply the defoamed electrolyte to the liquid supply tank, non-stop operation in the electrolyte supplementing period is achieved, and the problem that the electrolyte cannot be continuously injected due to the fact that deaeration and storage after deaeration are located in the same container environment is solved.

Description

Technical Field

[0001] The utility model relates to chemical liquid degassing and buffering precise pumping equipment, and relates to the technical field of battery production equipment. Background Art

[0002] With the strong support of the country for the new energy industry, new energy vehicles have become the main trend of future development. The demand for power batteries is increasing, and improving production efficiency has become the primary goal of all companies. Improving efficiency starts from the two aspects of process methods and equipment structure. Different battery models have different requirements for the accuracy of electrolyte injection. The gas contained in the electrolyte liquid produces bubbles during injection, which is one of the reasons that affect the accuracy of electrolyte injection. Therefore, degassing treatment is required during electrolyte injection.

[0003] There are existing equipment capable of degassing, such as Chinese patent publication number CN114405071A, which discloses a technology in which external glue is automatically sucked into a container due to vacuum negative pressure to perform boiling degassing, and the glue outlet end of the diaphragm valve is connected to the vacuum shell through a pipeline for glue dispensing; although the existing disclosed technology can realize liquid output for injection after degassing is completed under vacuum negative pressure environment, degassing and storage after degassing are in a container environment, and there is a problem that the electrolyte cannot be injected continuously. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a chemical liquid degassing buffering and precise pumping equipment.

[0005] The utility model is realized through the following technical solutions.

[0006] The utility model provides a chemical liquid degassing buffering precise pumping device, comprising:

[0007] Liquid supply tanks with hollow spaces inside, and liquid storage tanks A and B capable of degassing chemical liquids;

[0008] The pump group is used to pump the electrolyte inside the liquid tank, and the pump group is connected to the outlet of the liquid supply tank through the injection pipe.

[0009] It also includes a rack that provides an installation foundation, on which liquid storage tank A, liquid storage tank B, a liquid supply tank and a pump unit are fixed, and liquid storage tank A and liquid storage tank B are distributed in an inverted T shape on the rack above the liquid supply tank.

[0010] The bottom of the liquid supply tank is connected with a spare valve A at a spare interface and a waste discharge valve A for discharging waste; the top of the liquid supply tank is installed with an upper limit liquid level sensor for monitoring the liquid level.

[0011] The top of the liquid supply tank is connected and installed with a liquid supply tank feed port A, a liquid supply tank feed port B, an electronic pressure sensor A, a probe type liquid level sensor, a hollow access valve A and an inert access valve.

[0012] The top of the liquid storage tank A is correspondingly connected with a raw material ball valve A for allowing electrolyte raw material to enter, a vacuum ball valve A for controlling vacuum connection or disconnection, an inert ball valve A for controlling inert gas connection or disconnection, a standby interface valve A in standby state, a respirator A for releasing pressure, an observation window A for observing the internal situation, and an electronic pressure sensor B for monitoring internal pressure changes.

[0013] An upper limit liquid level sensor A for monitoring the upper limit of the liquid is installed on the outer side wall of the top of the liquid storage tank A, and a residual liquid level sensor A, a residual liquid level sensor B, a residual liquid level sensor C and a residual liquid level sensor D for monitoring the remaining amount of liquid are installed on the outer side wall of the liquid storage tank A from top to bottom; a backup valve B for backup function, a waste discharge valve B for discharging waste, a discharge valve A connected to the liquid supply tank inlet A at the bottom of the liquid supply tank, and a vibrator A for providing vibration are installed at the bottom of the liquid storage tank A.

[0014] The top of the liquid storage tank B is correspondingly connected with a raw material ball valve B for allowing electrolyte raw material to enter, a vacuum ball valve B for controlling vacuum connection or disconnection, an inert ball valve B for controlling inert gas connection or disconnection, a standby interface valve B in standby state, a respirator B for releasing pressure, an observation window B for observing the internal situation, and an electronic pressure sensor C for monitoring internal pressure changes.

[0015] An upper limit liquid level sensor C for monitoring the upper limit of the liquid is installed on the top outer wall of the liquid storage tank B; a plurality of residual liquid level sensors E for monitoring the remaining amount of liquid are installed in sequence from top to bottom on the outer wall of the liquid storage tank B; a standby valve C for standby function, a waste discharge valve C for discharging waste, a discharge valve B connected to the liquid supply tank inlet B at the bottom of the liquid supply tank, and a vibrator B for providing vibration are installed at the bottom of the liquid storage tank B.

[0016] A discharge port valve is installed on the liquid injection pipeline connecting the liquid supply tank and the pump group; a discharge port valve and a pump group interface are installed in sequence on the liquid injection pipeline behind the discharge port valve; a pressure equalizing pipeline is installed on the liquid injection pipeline located between the discharge port valve and the pump group interface, and the pressure equalizing pipeline is connected to the top of the liquid supply tank.

[0017] The beneficial effect of the utility model is that when the liquid supply tank pumps the electrolyte through the pump group for subsequent injection, the liquid storage tank A and the liquid storage tank B alternately and continuously supply the degassed electrolyte to the liquid supply tank, so that non-stop operation is achieved during electrolyte replenishment, which solves the problem that the degassed and degassed storage are in the same container environment and the electrolyte cannot be continuously injected. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] In the figure: 1-raw material ball valve A; 2-vacuum ball valve A; 3-inert ball valve A; 4-spare interface valve A; 5-breathing device A; 6-observation window A; 7-electronic pressure sensor B; 8-upper limit liquid level sensor A; 9-residual liquid level sensor A; 10-residual liquid level sensor B; 11-residual liquid level sensor C; 12-residual liquid level sensor D; 13-spare valve B; 14-waste discharge valve B;

[0020] 15-discharge port valve A; 17-raw material ball valve B; 18-vacuum ball valve B; 19-inert ball valve B; 20-spare interface valve B; 21-breathing device B; 22-observation window B; 23-electronic pressure sensor C; 24-upper limit liquid level sensor C; 26-residual liquid level sensor E; 27-spare valve C; 28-waste discharge valve C; 29-discharge port valve B; 30-on-off valve A;

[0021] 31-Liquid supply tank inlet A; 32-Breathing device C; 33-Liquid supply tank inlet B; 34-Electronic pressure sensor A; 35-Probe type liquid level sensor; 36-Hollow access valve A; 37-Inert access valve; 38-Upper limit liquid level sensor; 40-Backup valve A; Waste discharge valve A; 42-Discharge port valve; 43-Discharge ball valve; 44-Pump group interface;

[0022] 45-pump unit; 46-frame; 47-liquid storage tank A; 48-liquid storage tank B; 49-liquid supply tank. DETAILED DESCRIPTION

[0023] The technical solution of the utility model is further described below, but the scope of protection required is not limited to the description.

[0024] like Figure 1 shown.

[0025] A chemical liquid degassing buffering and precise pumping device of the present application comprises:

[0026] The liquid supply tank 49 has a hollow space inside, and the liquid supply tank 49 transfers and stores chemical liquids such as degassed electrolyte; the liquid supply tank 49 is connected to the pump group 45 through the injection pipeline, and the chemical liquid inside the liquid supply tank 49 is pumped by the pump group 45 for subsequent injection.

[0027] It also includes a liquid storage tank A47 and a liquid storage tank B48, both of which can degas the chemical liquid. The liquid storage tank A47 and the liquid storage tank B48 are connected to the top of the liquid supply tank 49 respectively. The liquid storage tank A47 and the liquid storage tank B48 degas the chemical liquid separately and then independently input it into the liquid supply tank 49.

[0028] When the liquid supply tank 49 pumps electrolyte through the pump group 45 for subsequent injection, the liquid storage tank A47 and the liquid storage tank B48 alternately and continuously supply the degassed electrolyte to the liquid supply tank 49, so as to achieve non-stop operation during the electrolyte replenishment.

[0029] A discharge port valve 42 is installed on the injection pipeline connecting the liquid supply tank 49 and the pump group 45. The discharge port valve 42 controls the on-off of the liquid injection pipeline at the outlet of the liquid supply tank 49, which is convenient for control in the case of maintenance of the rear part; a discharge ball valve 43 and a pump group interface 44 are installed in sequence on the injection pipeline at the rear of the discharge port valve 42. The pump group interface 44 is used for connecting and docking the liquid supply tank 49 with the pump group 45. The discharge ball valve 43 controls the discharge and is connected to the bypass bubble escape mechanism; a pressure equalizing pipeline 50 is installed on the injection pipeline located between the discharge ball valve 43 and the pump group interface 44. The pressure equalizing pipeline 50 is connected to the top of the liquid supply tank 49 for pressure equalization. If small bubbles are generated during discharge, they can escape through the pressure equalizing pipe 50 to prevent the bubbles from entering the pump group 45.

[0030] It also includes a frame 46 that provides an installation base, and a liquid storage tank A47, a liquid storage tank B48, a liquid supply tank 49 and a pump group 45 are fixed on the frame 46. The liquid storage tank A47 and the liquid storage tank B48 are distributed in an inverted T shape on the frame 46 above the liquid supply tank 49.

[0031] The bottom of the liquid supply tank 49 is connected with a standby valve A40 at a standby interface and a waste discharge valve A41 for discharging waste. The top of the liquid supply tank 49 is equipped with an upper limit liquid level sensor 38 for monitoring the liquid level. The top of the liquid supply tank 49 is connected with a liquid supply tank feed port A31, a liquid supply tank feed port B33, an electronic pressure sensor A34, a probe type liquid level sensor 35, a hollow access valve A36 and an inert access valve 37; the liquid supply tank feed port A31 is used to communicate with the bottom of the liquid storage tank A47, the liquid supply tank feed port B33 is equipped with an on-off valve A30 for communicating with the bottom of the liquid storage tank B48, the hollow access valve A36 is used to connect to the vacuum environment of the external equipment, and the inert access valve 37 is used to introduce inert gas to form pressure so that the electrolyte is discharged from the top of the liquid supply tank 49 to the bottom of the liquid supply tank 49. A respirator C32 for releasing pressure is installed on the top of the liquid supply tank 49.

[0032] The top of the liquid storage tank A47 is correspondingly connected with a raw material ball valve A1 for allowing electrolyte raw material to enter, a vacuum ball valve A2 for controlling vacuum connection or disconnection, an inert ball valve A3 for controlling inert gas connection or disconnection, a standby interface valve A4 in standby state, a respirator A5 for releasing pressure, an observation window A6 for observing the internal situation, and an electronic pressure sensor B7 for monitoring internal pressure changes; an upper limit liquid level sensor A8 for monitoring the upper limit of the liquid is installed on the outer side wall of the top of the liquid storage tank A47, and a residual liquid level sensor A9 and a residual liquid level sensor B7 for monitoring the remaining amount of liquid are installed on the outer side wall of the liquid storage tank A47 from top to bottom. 10. Residual liquid level sensor C11 and residual liquid level sensor D12; the bottom of the liquid storage tank A47 is equipped with a standby valve B13 for standby function, a waste discharge valve B14 for discharging waste, a discharge valve A15 connected to the liquid supply tank inlet A31 at the bottom of the liquid supply tank 49, and an exciter A (not shown in the figure) for providing vibration. After the vacuum ball valve A2 is turned on, a vacuum environment appears inside the liquid storage tank A47, which cooperates with the excitation of the exciter A, so that the raw material entering the liquid storage tank A47 from the raw material ball valve A1 can be quickly degassed, and the discharge valve A15 controls the electrolyte after degassed inside the liquid storage tank A47 to flow to the inside of the liquid supply tank 49.

[0033] The top of the liquid storage tank B48 is connected to a raw material ball valve B17 for the electrolyte raw material to enter, a vacuum ball valve B18 for controlling the vacuum connection or disconnection, an inert ball valve B19 for controlling the inert gas connection or disconnection, a standby interface valve B20 in standby state, a respirator B21 for releasing pressure, an observation window B22 for observing the internal situation, and an electronic pressure sensor C23 for monitoring the internal pressure change; an upper limit liquid level sensor C24 for monitoring the upper limit of the liquid is installed on the outer wall of the top of the liquid storage tank B48; multiple liquid level sensors C24 for monitoring the remaining liquid are installed on the outer wall of the liquid storage tank B48 from top to bottom. The remaining liquid level sensor E26 is used to measure the amount of residual liquid level; the bottom of the liquid storage tank B48 is equipped with a standby valve C27 for standby function, a waste discharge valve C28 for discharging waste, a discharge valve B29 connected to the liquid supply tank inlet B33 at the bottom of the liquid supply tank 49, and an exciter B (not shown in the figure) for providing vibration. After the vacuum ball valve B18 is turned on, a vacuum environment appears inside the liquid storage tank B48 and the excitation of the exciter B is cooperated, so that the raw material entering the liquid storage tank B48 from the raw material ball valve B17 can be quickly degassed, and the discharge valve B29 controls the electrolyte after degassed in the liquid storage tank B48 to flow to the inside of the liquid supply tank 49.

[0034] Since the raw materials of the electrolyte can enter the liquid storage tank A47 and the liquid storage tank B48 independently, the electrolyte is degassed under the action of the vacuum environment and excitation in the liquid storage tank A47 and the liquid storage tank B48, so that the liquid storage tank A47 and the liquid storage tank B48 alternately and continuously supply the degassed electrolyte to the liquid supply tank 49, thereby achieving non-stop operation during electrolyte replenishment, and solving the problem that the degassed and degassed storage are in the same container environment and the electrolyte cannot be continuously injected.

Claims

1. A chemical liquid degassing and buffering precision pumping equipment, characterized in that: include: A liquid supply tank (49) having a hollow space inside, and a liquid storage tank A (47) and a liquid storage tank B (48) both capable of degassing chemical liquids; A pump group (45) is used to pump the electrolyte in the liquid tank (49) and inject the electrolyte into the liquid tank. The pump group (45) is connected to the outlet of the liquid supply tank (49) through a liquid injection pipe.

2. The chemical liquid degassing buffering and precise pumping equipment according to claim 1, characterized in that: The invention also includes a frame (46) for providing an installation base, and a liquid storage tank A (47), a liquid storage tank B (48), a liquid supply tank (49) and a pump group (45) are fixed on the frame (46), and the liquid storage tank A (47) and the liquid storage tank B (48) are arranged in an inverted triangle shape on the frame (46) above the liquid supply tank (49).

3. The chemical liquid degassing buffering and precise pumping equipment according to claim 1, characterized in that: The bottom of the liquid supply tank (49) is connected to a standby valve A (40) at a standby interface and a waste discharge valve A (41) for discharging waste; the top of the liquid supply tank (49) is equipped with an upper limit liquid level sensor (38) for monitoring the liquid level.

4. The chemical liquid degassing buffering and precise pumping equipment according to claim 3, characterized in that: The top of the liquid supply tank (49) is connected and installed with a liquid supply tank feed port A (31), a liquid supply tank feed port B (33), an electronic pressure sensor A (34), a probe type liquid level sensor (35), a hollow access valve A (36) and an inert access valve (37).

5. The chemical liquid degassing buffering and precise pumping equipment according to claim 4, characterized in that: The top of the liquid storage tank A (47) is correspondingly connected with a raw material ball valve A (1) for allowing electrolyte raw material to enter, a vacuum ball valve A (2) for controlling vacuum connection or disconnection, an inert ball valve A (3) for controlling inert gas connection or disconnection, a standby interface valve A (4) in standby state, a respirator A (5) for releasing pressure, an observation window A (6) for observing the internal situation, and an electronic pressure sensor B (7) for monitoring the internal pressure change.

6. The chemical liquid degassing buffering and precise pumping equipment according to claim 1, characterized in that: The top outer wall of the liquid storage tank A (47) is equipped with an upper limit liquid level sensor A (8) for monitoring the upper limit of the liquid. The outer wall of the liquid storage tank A (47) is equipped with a residual liquid level sensor A (9), a residual liquid level sensor B (10), a residual liquid level sensor C (11) and a residual liquid level sensor D (12) for monitoring the remaining amount of the liquid in order from top to bottom; the bottom of the liquid storage tank A (47) is equipped with a standby valve B (13) for standby function, a waste discharge valve B (14) for discharging waste, a discharge valve A (15) connected to the liquid supply tank inlet A (31) at the bottom of the liquid supply tank (49), and a vibration exciter A for providing vibration.

7. The chemical liquid degassing buffering and precise pumping equipment according to claim 6, characterized in that: The top of the liquid storage tank B (48) is correspondingly connected with a raw material ball valve B (17) for allowing electrolyte raw material to enter, a vacuum ball valve B (18) for controlling vacuum connection or disconnection, an inert ball valve B (19) for controlling inert gas connection or disconnection, a standby interface valve B (20) in a standby state, a respirator B (21) for releasing pressure, an observation window B (22) for observing the internal situation, and an electronic pressure sensor C (23) for monitoring the internal pressure change.

8. The chemical liquid degassing buffering and precise pumping equipment according to claim 7, characterized in that: An upper limit liquid level sensor C (24) for monitoring the upper limit of the liquid is installed on the outer wall of the top of the liquid storage tank B (48); a plurality of residual liquid level sensors E (26) for monitoring the remaining amount of the liquid are installed in sequence from top to bottom on the outer wall of the liquid storage tank B (48); a standby valve C (27) for standby function, a waste discharge valve C (28) for discharging waste, a discharge port valve B (29) connected to the liquid supply tank inlet B (33) at the bottom of the liquid supply tank (49), and a vibration exciter B for providing vibration are installed at the bottom of the liquid storage tank B (48).

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