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Specifically relates to a Gravimetric blender alarm meter


source:[Gravimetric blender]   release time:2021-04-15 10:17:22




The utility model belongs to the technical field of photovoltaic module production, and specifically relates to a Gravimetric blender alarm meter.
Background technique:
When silicon wafers are cleaned, the cleaning machine changes water/replenishment and automatically adds chemical agents. In the current implementation plan, pneumatic diaphragm pumps are used to extract the solution in the solution tank. Employees must monitor the solution tank during work. Whether the solution is sufficient or not, due to the uncontrollable inspection process of personnel, employees tend to forget to replace the solution tank, resulting in abnormal liquid filling or empty pumping, which seriously affects equipment operation and product quality.

Technical realization elements:
Gravimetric alarm blender

The purpose of the utility model is to provide a weighing alarm Gravimetric blender, which solves the problem of untimely and inaccurate manual monitoring of the solution stock.

The technical scheme adopted by the utility model is: a Gravimetric blender alarm meter, including a weighing meter, a switch and an alarm device. The weighing meter is used to weigh the solution barrel placed on it. When the weight of the solution barrel is low The action of the circuit where the switch is located at the set value causes the alarm device to give a warning.
The utility model is also characterized by:
The switch is also connected to the washing machine control system, lighting system and operating system. The switch is normally open. When the switch is closed, it sends a trigger electrical signal to the washing machine control system, lighting system and operating system.
The weighing meter, switch and alarm device form a series circuit, and the weighing meter adopts a metal pointer type platform scale. When the metal pointer rotates to the set value, the series circuit is closed and connected.
It also includes a power supply device. The power supply device forms a series loop power supply for the weighing meter, the switch and the alarm device.
The alarm device includes a buzzer and LED lights connected in series.
The beneficial effect of the utility model is that: a weighing alarm meter of the utility model solves the problem of untimely and inaccurate manual monitoring of the solution stock. The weighing alarm meter of the utility model has a complete hardware structure, stable performance, easy control and execution, and can realize automatic monitoring of the solution volume, and the weighing alarm quota can be adjusted according to needs, and only needs to be replaced when the alarm is issued. The solution tank can complete the entire work, ensuring the reliability of the liquid supply pump and the cleaning effect of the silicon wafer, and also improving the cleaning efficiency.
The composition of a Gravimetric blender alarm meter of the utility model: 1. Weighing meter, 2. Buzzer, 3. LED light, 4. Switch, 5. Power supply device, 6. Resistance.
DETAILED DESCRIPTION OF THE INVENTION The new Gravimetric blender of the utility model will be described in detail.
The structure of a Gravimetric alarm blender provided by the utility model is shown in Figure 1. It includes a Gravimetric blender 1, a switch 4 and an alarm device. The weighing meter 1 is used for weighing the solution barrel placed on it. When the weight of the solution barrel is When the value is lower than the set value, the circuit where the switch 4 is located causes the alarm device to give a warning. And switch 4 is also connected to the washing machine control system, lighting system and operating system respectively. The circuit where the switch 4 is located is normally open. When the circuit where the switch 4 is located, it sends a trigger electrical signal to the washing machine control system, lighting system and operating system. .
Specifically, the weighing meter 1, the switch 4 and the alarm device constitute a series circuit, and the weighing meter 1 adopts a metal pointer type platform scale. The metal pointer of the weighing meter 1 is connected to one end of the series circuit, and the contact point at the other end of the series circuit is located at the scale. Re-count 1 in the small range area. When the metal pointer rotates to the set value, the circuit where the switch 4 is located constitutes a path. The weighing limit of the scale 1 can be adjusted by the pointing position of the metal pointer. It also includes a power supply device 5, and the power supply device 5 forms a series loop power supply for the weighing meter 1, the switch 4 and the alarm device. Exemplarily, the power supply device 5 may be a storage battery or a battery.
Exemplarily, the alarm device may be a buzzer 2 and an LED light 3 connected in series.
In actual use, a resistor 6 can be added to the series loop to adjust the power supply current according to the voltage of the power supply device 5 to prevent damage to the loop components. During use, first set the switch 4 to be normally open, place the solution tank on the weighing meter 1, the metal pointer will point to the right for a long time, and then set the switch 4 to close. As the solution in the tank is drawn, the pointer gradually tends to The small range on the left, when the set weight is reached, the metal pointer is in contact with the contact point of the series circuit, the whole series circuit is closed and connected, and the LED light 3 and buzzer 2 are triggered to warn the staff; at the same time, they are connected to the switch 4 respectively The washing machine control system, lighting system and operation system of the washing machine receive a trigger electric signal, and the PLC control of the washing machine control system disconnects the pump relay, so that the pump stops pumping, and acts on the lighting system and the operation system at the same time. , The switch of the lighting system is turned off, the lighting is invalid, and the equipment operation is stopped, and the staff is reminded to replace the solution tank to prevent the employees from operating illegally without replacing the solution tank.[Gravimetric blender]