CN210771464U

CN210771464U - Liquid discharge device

Info

Publication number: CN210771464U
Application number: CN201921488009.6U
Authority: CN
Inventors: 邱立国; 周理; 廖文杰; 肖俊
Original assignee: Zhuhai Titans New Power Electronics Co Ltd
Current assignee: Zhuhai Titans New Power Electronics Co Ltd
Priority date: 2019-09-06
Filing date: 2019-09-06
Publication date: 2020-06-16
Anticipated expiration: 2029-09-06

Abstract

The utility model discloses a drainage device, include: a filter having a first drain end; the liquid storage tank is provided with a first liquid inlet end and a second liquid discharge end, a liquid level sensor is arranged on the liquid storage tank, and the first liquid inlet end is connected with the first liquid discharge end; the first valve is positioned between the first liquid discharging end and the first liquid inlet end and is connected with the first liquid discharging end and the first liquid inlet end; the vent valve is connected with the liquid storage tank and can communicate the outside air with the liquid storage tank; the second valve is connected with the second liquid discharging end; the control device is electrically connected with the liquid level sensor and is in driving connection with the first valve, the second valve and the vent valve; use the utility model discloses a drain can realize automatic flowing back under the prerequisite that does not influence filter work.

Description

Liquid discharge device

Technical Field

The utility model relates to a lithium cellization becomes partial volume field, in particular to drain.

Background

In the negative pressure formation process of the lithium battery, gas generated by electrochemical reduction reaction is not completely discharged and remains in the battery wall, and volatilized electrolyte aerial fog can be brought out in the process of discharging residual bubbles through negative pressure, so that the aerial fog containing electrolyte needs to be converted into liquid by using a gas-liquid filter and separated, and the electrolyte collected in the gas-liquid filter is discharged; in the former negative pressure formation process, the manual valve opening and closing of a production line patrol worker is mainly used for liquid drainage, and the liquid drainage work is limited.

The prior art provides a liquid drainage method, wherein after a liquid drainage button is started by a production line inspector, a valve between a liquid storage tank and a gas-liquid filter is closed, a vent valve and a liquid drainage valve are opened to drain electrolyte, then the liquid drainage valve is closed, and after a vacuumizing device is started for vacuumizing, the valve between the liquid storage tank and the gas-liquid filter is opened; the method relies on manual observation of whether the reservoir is full of liquid; the electrolyte leakage is easily caused when the operation is not in time.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve one of the technical problem that exists among the prior art at least, provide a drainage device, can not rely on the manual work, realize the automatic collection and the emission of electrolyte under the prerequisite of guaranteeing vacuum.

According to an aspect of the utility model, a drain is provided, include: a filter having a first drain end; the liquid storage tank is provided with a first liquid inlet end and a second liquid discharge end, a liquid level sensor is arranged on the liquid storage tank, and the first liquid inlet end is connected with the first liquid discharge end; the first valve is positioned between the first liquid discharging end and the first liquid inlet end and is connected with the first liquid discharging end and the first liquid inlet end; the vent valve is connected with the liquid storage tank and can communicate the outside air with the liquid storage tank; the second valve is connected with the second liquid discharging end; and the control device is electrically connected with the liquid level sensor and is in driving connection with the first valve, the second valve and the vent valve.

Further, the first valve, the second valve and the vent valve are pneumatic valves, and the control device can control the air source to supply air to the first valve, the second valve and the vent valve.

Further, the liquid discharge device further comprises a first electromagnetic valve assembly and a second electromagnetic valve assembly, the first electromagnetic valve assembly and the second electromagnetic valve assembly are both electrically connected with the control device, the first electromagnetic valve assembly is connected with the first valve, and the second electromagnetic valve assembly is connected with the second valve and the vent valve.

Further, the first valve comprises a first air inlet and a second air inlet, and the first air inlet and the second air inlet are both connected with the first electromagnetic valve component; the second valve comprises a third air inlet and a fourth air inlet, and the third air inlet and the fourth air inlet are both connected with the second electromagnetic valve assembly; the air inlet end of the vent valve is connected with the third air inlet.

Further, the drain device comprises a plurality of silencers, and the silencers are arranged on an air supply line for supplying air to the first valve, the second valve and the vent valve.

Use the utility model discloses an drainage device, can be when level sensor detects full liquid, controlling means closes first valve, then open breather valve and second valve, with the inside liquid evacuation of liquid storage tank, then close second valve and breather valve, open first valve, continue to collect electrolyte, whole flowing back process is automatic to be accomplished, need not artificial intervention, because the flowing back in-process, first valve is in the closed condition, vacuum in the filter main part has been guaranteed under the vacuum device prerequisite of not using to take out, the still sustainable filtration of filter main part collects electrolyte, avoided the liquid storage tank to hold the vacuum pipeline pressure interference that the tie made the filter main part in the work and filter main part extension because of liquid storage tank cavity internal pressure and atmospheric pressure in the flowing back.

Drawings

The present invention will be further described with reference to the accompanying drawings and examples;

fig. 1 is a schematic view of a liquid discharge device according to embodiment 1 of the present invention;

fig. 2 is a pneumatic schematic diagram of a liquid discharge device in embodiment 1 of the present invention;

fig. 3 is a flow chart of a liquid discharge process in embodiment 2 of the present invention;

the figures contain the following reference numerals:

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does 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 thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Example 1

Referring to fig. 1, a liquid discharge apparatus, comprising: a filter 1 having a first drain end; the liquid storage tank 4 is provided with a first liquid inlet end and a second liquid discharge end, a liquid level sensor 41 is arranged on the liquid storage tank 4, and the first liquid inlet end is connected with the first liquid discharge end; the first valve 2 is positioned between the first liquid discharging end and the first liquid inlet end, and the first valve 2 is connected with the first liquid discharging end and the first liquid inlet end; the vent valve 3 is connected with the liquid storage tank 4, and the vent valve 3 can communicate the outside air with the liquid storage tank 4; a second valve 5 connected with the second liquid discharging end; the control device is not shown in the figure, and is electrically connected with the liquid level sensor 41, and the control device is in driving connection with the first valve 2, the second valve 5 and the vent valve 3.

Use the utility model discloses a drainage device, can be when level sensor 41 detects full liquid, controlling means closes first valve 2, then open breather valve 3 and second valve 5, with the inside liquid evacuation of liquid storage pot 4, then close second valve 5 and breather valve 3, open first valve 2, continue to collect electrolyte, whole flowing back process is automatic to be accomplished, need not artificial intervention, because the flowing back in-process, first valve 2 is in the closed condition, vacuum in the filter main part has been guaranteed under the vacuum device prerequisite of not using to take out, filter 1 is sustainable filtration collection electrolyte still, avoided liquid storage pot 4 to hold the vacuum pipeline pressure interference that the tie made filter 1 and filter 1 extension in the work because of liquid storage pot cavity internal pressure and atmospheric pressure in the flowing back.

Wherein, the control device can perform the opening and closing of the first valve 2, the second valve 5 and the vent valve 3 by various ways, for example, electromagnetic valves are adopted to serve as the first valve 2, the second valve 5 and the vent valve 3, and the control device is electrically connected with the three valves; and a pneumatic valve or a hydraulic valve can be selected as the three valves, and the pneumatic pressure source or the hydraulic pressure source is selectively switched on and off by using the control device, so that the aim of controlling the three valves to be switched on and off is fulfilled.

Specifically, the control device may be a programmable logic controller PLC.

As shown in fig. 2, since the electrolyte has strong corrosivity and easily corrodes the valve body, thereby leaking, it is necessary to ensure that the first valve 2, the second valve 5 and the vent valve 3 have good corrosion resistance and sealing performance, so that the pneumatic valves can be selectively used as the first valve 2, the second valve 5 and the vent valve 3, and the gas source 8 is controlled to supply gas to the three valves to open and close the three valves.

Specifically, the first valve 2 and the second valve 5 are standard pneumatic ball valves specified in the national standard GB, and the structures thereof are the prior art, and are not described herein again.

In order to ensure the sealing performance and corrosion resistance of the first valve 2 and the second valve 5, chemical corrosion resistant materials such as PTFE polytetrafluoroethylene resin can be selected to make the O-rings in the first valve 2 and the second valve 5.

As shown in fig. 2, the liquid discharge device further includes a first solenoid valve assembly 71 and a second solenoid valve assembly 72, both the first solenoid valve assembly 71 and the second solenoid valve assembly 72 are electrically connected to the control device, the first solenoid valve assembly 71 is connected to the first valve 2, and the second solenoid valve assembly 72 is connected to the second valve 5 and the vent valve 3.

As shown in fig. 2, the first intake port 21 and the second intake port 22, and both the first intake port 21 and the second intake port 22 are connected to the first solenoid valve assembly 71; the second valve 5 comprises a third air inlet 51 and a fourth air inlet 52, and the third air inlet 51 and the fourth air inlet 52 are both connected with a second electromagnetic valve assembly 72; the intake end of the breather valve 3 is connected to the third intake port 51.

Optionally, the vent valve 3 further has an elastic member, and the elastic member and the air inlet end of the vent valve 3 are located on both sides of the spool of the vent valve 3.

Since the second valve 5 and the vent valve 3 are always opened and closed simultaneously during the liquid discharging process, the opening and closing of the second valve 5 and the vent valve 3 can be controlled simultaneously by one electromagnetic valve assembly, and two electromagnetic valves are not needed to be used for controlling the second valve 5 and the vent valve 3 respectively.

When the air source 8 supplies air to the third air inlet 51, the valve core of the second valve 5 is far away from the third air inlet 51, the second valve 5 is opened, and because the third air inlet 51 is connected with the air inlet end of the vent valve 3, the air source 8 also supplies air to the vent valve 3 at the moment, and the vent valve 3 is opened; when the air source 8 supplies air to the fourth air inlet 52, the valve core of the second valve 5 is far away from the fourth air inlet 52, the second valve 5 is closed, and the vent valve 3 is closed; when the air source 8 supplies air to the first air inlet 21, the valve core of the first valve 2 is far away from the first air inlet 21, and the first valve 2 is opened; when the air source 8 supplies air to the second air inlet 22, the valve core of the first valve 2 is far away from the second air inlet 22, and the first valve 2 is closed.

In order to reduce the noise caused by the high pressure gas during the draining process, a plurality of silencers may be added to the draining device and installed on the gas supply line for supplying gas from the gas source 8 to the first valve 2, the second valve 5 and the vent valve 3.

Example 2

In this embodiment, on the basis of embodiment 1, the liquid discharge apparatus in embodiment 1 is used to provide a liquid discharge method, including: s1, setting the liquid level sensor 41 to detect the liquid level position; s2, when the liquid level sensor 41 detects the full liquid signal, the liquid level sensor 41 transmits the full liquid signal to the control device; s3, when the control device receives the full liquid signal from the liquid level sensor 41, the control device closes the first valve 2 and opens the second valve 5 and the vent valve 3.

The whole process from S1 to S3 is automatically operated under the control of the control device, so the liquid drainage process is automatically completed without manual intervention.

Further, the liquid discharge method further comprises the following steps: s4, after the first valve 2 is closed, the second valve 5 and the vent valve 3 are opened and preset time is elapsed, a full liquid signal of the liquid level sensor 41 is obtained; s51, when the full liquid signal is off, the second valve 5 and the vent valve 3 are closed, and the first valve 2 is opened.

Wherein, the full liquid signal is turned off to indicate that the liquid level sensor 41 detects that the liquid level in the liquid storage tank 4 is lower than the full liquid level, and the full liquid signal is turned on to indicate that the liquid level sensor 41 detects that the liquid level in the liquid storage tank 4 is equal to or higher than the full liquid level

The preset time can be flexibly determined according to the liquid discharge flow of the second valve 5 and the volume of the liquid storage tank 4, for example, the time required for emptying the liquid storage tank 4 can be determined.

At this time, the liquid discharge device stops discharging liquid, the liquid storage tank 4 continues to store the liquid from the filter 1, and when the liquid level of the storage tank reaches the preset level value again, the control device repeats the steps S1-S51.

Further, the liquid discharge method further comprises a step S52 of sending out an alarm signal when the full liquid signal is turned on.

After the second valve 5 and the vent valve 3 are opened and preset time passes, the liquid storage tank 4 is still in a full liquid state, namely, the liquid drainage device is in failure and liquid drainage is not smooth, at the moment, the control device sends out an alarm signal to remind a worker to process the failure, and the operation of the liquid drainage device is recovered after the failure is eliminated; when the liquid level of the storage tank reaches the preset level value again, the control device repeats the steps S1-S51.

As shown in the figure, when the pneumatic system is used to control the opening and closing of the first valve 2, the second valve 5 and the vent valve 3, the control device may be electrically connected to the first solenoid valve assembly and the second solenoid valve assembly 72, and the two solenoid valve assemblies are used to control the air supply mode of the air source 8 to control the opening and closing of the valves.

Specifically, step S51 includes: controlling the second solenoid valve assembly 72 to connect the air source 8 and the fourth air inlet 52; the first solenoid valve assembly 71 is controlled to connect the gas source 8 and the first gas inlet 21, at this time, the second valve 5 and the vent valve 3 are closed, the flow path of the electrolyte from the reservoir tank 4 to the outside is blocked, the first valve 2 is opened, and the reservoir tank 4 normally collects the electrolyte in the filter 1.

Further, step S3 includes: s31, controlling the first solenoid valve assembly 71 to connect the air source 8 and the second air inlet 22; controlling the second solenoid valve assembly 72 to connect the air source 8 with the third air inlet 51 and to connect the air source 8 with the vent valve 3; at this time, the first valve 2 is closed, the second valve 5 and the vent valve 3 are opened, and the electrolyte is discharged from the reservoir tank 4 to the outside.

In order to effectively reduce the noise generated by the high-pressure gas in the drain, in step S31, the first inlet port 21 may be selectively connected to the second muffler 62, and the fourth inlet port 52 may be selectively connected to the fourth muffler 64; in step S51, it is optional to connect the second intake port 22 to the first muffler 61 and to connect the third intake port 51 to the third muffler 63.

Fig. 3 shows a preferred draining process combining the above-mentioned draining method, as follows: the programmable controller detects a full liquid signal of the liquid level sensor 41; when the liquid level is higher than or equal to the detection liquid level, the programmable controller receives a liquid full signal, the first electromagnetic valve and the second electromagnetic valve are started, the first valve 2 is closed, and the vent valve 3 and the second valve 5 are opened to discharge liquid; after the preset liquid drainage time, when the liquid level is less than the detection position and the programmable controller does not detect a liquid full signal, the vent valve 3 and the second valve 5 are closed, the first valve 2 is opened, and a liquid drainage cycle is completed; after the preset liquid drainage time, when the liquid level is still more than or equal to the detection position and the programmable controller detects a liquid full signal, the programmable controller sends out an alarm signal to remind field personnel to remove the fault and then to recover the operation.

In the present embodiment, the reference numerals "S1", "S2", etc. of the method steps should be understood as a limitation on the order of the steps.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the gist of the present invention within the knowledge range of those skilled in the art.

Claims

1. A drain, comprising:

a filter (1) having a first drain end;

the liquid storage tank (4) is provided with a first liquid inlet end and a second liquid discharge end, a liquid level sensor (41) is arranged on the liquid storage tank (4), and the first liquid inlet end is connected with the first liquid discharge end;

the first valve (2) is positioned between the first liquid discharging end and the first liquid inlet end, and the first valve (2) is connected with the first liquid discharging end and the first liquid inlet end;

the vent valve (3) is connected with the liquid storage tank (4), and the vent valve (3) can communicate the outside air with the liquid storage tank (4);

the second valve (5) is connected with the second liquid discharging end;

the control device is electrically connected with the liquid level sensor (41), and is in driving connection with the first valve (2), the second valve (5) and the vent valve (3).

2. Drain as claimed in claim 1, characterized in that said first valve (2), said second valve (5) and said vent valve (3) are pneumatic valves, said control device being able to control a gas source (8) to supply gas to said first valve (2), said second valve (5) and said vent valve (3).

3. Drain according to claim 2, characterized in that it further comprises a first solenoid valve assembly (71) and a second solenoid valve assembly (72), said first solenoid valve assembly (71) and said second solenoid valve assembly (72) each having a control gas circuit, said first solenoid valve assembly (71) and said second solenoid valve assembly (72) each being electrically connected to said control device, said first solenoid valve assembly (71) being connected to said first valve (2), said second solenoid valve assembly (72) being connected to said second valve (5) and to said vent valve (3).

4. A draining arrangement according to claim 3, wherein the first valve (2) comprises a first inlet port (21) and a second inlet port (22), both the first inlet port (21) and the second inlet port (22) being connected to the first solenoid valve assembly (71); the second valve (5) comprises a third air inlet (51) and a fourth air inlet (52), and the third air inlet (51) and the fourth air inlet (52) are both connected with the second electromagnetic valve component (72); the air inlet end of the vent valve (3) is connected with the third air inlet (51).

5. The draining device according to claim 2, characterized in that it further comprises a plurality of silencers mounted on the air supply line of the air supply (8) feeding the first valve (2), the second valve (5) and the venting valve (3).