JP3014426U - Fixed amount liquid supply tank - Google Patents

Abstract

(57) [Summary] [Structure] A partition wall is provided inside, and it is divided into a fixed quantity liquid storage section and an excess liquid discharge section. It is placed above the metered liquid container, and a pump is attached in the middle of the introduction pipe.
Connect a fixed quantity liquid supply pipe to the bottom of the fixed quantity liquid storage part, attach an open / close valve in the middle of it, connect a return pipe to the bottom surface of the excess liquid discharge part, and place the other end above the liquid storage tank. When the water flow sensor is installed and it detects that the liquid is flowing, the pump controls the pump to stop operating. [Effect] With a relatively simple structure, it is possible to accurately store and supply the liquid of the set volume, and it is difficult for failure to occur.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a fixed-quantity liquid supply tank that temporarily stores a fixed amount of liquid and then supplies the fixed amount of liquid.

[0002]

[Prior art]

 As shown in FIG. 2, the conventional fixed quantity liquid supply tank is open above the fixed quantity liquid supply tank 4, but is not divided because there is no partition inside. One end of the introduction pipe 20 is arranged in the liquid storage tank 1 near the bottom. The other end is arranged above the metered liquid supply tank 4. A pump 3 is attached in the middle of the pump. The controller 8 controls the operation and stop of the pumping pump 3. A water level sensor 9 is installed at the set water level of the constant quantity liquid supply tank 4. The water 2 in the liquid storage tank 1 is pumped into the metered liquid supply tank 4 by the introduction pipe 20 and the pump 3. When the water 5 in the metered liquid supply tank 4 gradually increases and comes into contact with the water level sensor 9, a detection signal is output to the controller 8. A fixed quantity liquid supply pipe 21 is connected to the bottom of the fixed quantity liquid supply tank 4, and a control valve 6 is attached in the middle thereof. The opening and closing of the control valve 6 is controlled by the controller 8. When the detection signal from the water level sensor 9 is input to the controller 8, the controller 8 outputs a stop signal to the pumping pump 3. After a lapse of a predetermined time, a control signal is output from the controller 8 to the control valve 6 to open the control valve 6.

[0003]

[Problems to be solved by the device]

 However, in the conventional fixed-quantity liquid supply tank, it takes a little time until the pumping pump completely stops after receiving the detection signal from the water level sensor, so the actual water level is Tends to be above the bottom edge. On the other hand, when a liquid flows in from the inlet pipe, a wave is generated on the liquid surface, so even if the stationary water level does not reach the lower end of the water level sensor, the wavy liquid surface may come into contact with the water level sensor and generate a detection signal. , The actual water level tends to be lower than the lower end of the water level sensor. Furthermore, if the water level sensor touches the liquid, the water level sensor may deteriorate. As a result, there is a problem that the amount of liquid is not constant.

[0004]

[Means for solving the problem]

 The above-mentioned problem is that the constant quantity liquid supply tank of the present invention according to claim 1, that is, a partition wall is provided inside to divide into a constant quantity liquid storage section and an excess liquid discharge section, and the bottom of the inner section of the liquid storage tank. Place one end of the introduction pipe close to the other end, place the other end of the introduction pipe above the fixed quantity liquid storage part, attach a pumping pump in the middle of the introduction pipe, and connect the fixed quantity liquid supply pipe to the bottom of the fixed quantity liquid storage part. Then, install an on-off valve in the middle, connect a return pipe to the bottom of the excess liquid discharge part, place the other end above the liquid storage tank, install a water flow sensor in the middle of it, and the liquid flow sensor If it is detected that the pumping pump is stopped, it is solved by the metered liquid supply tank.

[0005]

【Example】

 An embodiment of the present invention will be described below with reference to FIG. FIG. 1 is a schematic view of a metered liquid supply tank according to an embodiment of the present invention. A partition wall 41, which is lower than the side wall 40, is provided inside the fixed quantity liquid supply tank 4, and is divided into a fixed quantity liquid storage section 42 and an excess liquid storage section 43. The installation position and height of the partition wall 41 determines the maximum volume that can be stored in the metered liquid container 42. One end of the introduction pipe 20 is arranged above the fixed quantity liquid storage part 42, the other end of the introduction pipe 20 is arranged near the bottom inside the liquid storage tank 1, and a pumping pump is provided in the middle of the introduction pipe 20. 3 is installed. The liquid 2 in the liquid storage tank 1 is pumped up by the introduction pipe 20 and stored in the fixed quantity liquid storage portion 42 of the constant quantity liquid supply tank 4, but it is devised so as not to flow backward. A fixed quantity liquid supply pipe 21 is connected to the bottom surface of the fixed quantity liquid supply tank 4, and a control valve 6 is attached in the middle thereof. On the other hand, the return pipe 22 is connected to the bottom surface of the excess liquid storage portion 43, and the other end thereof extends to above the liquid storage tank 1. A water flow sensor 7 is attached on the way. The amount of the liquid 5 stored in the fixed amount liquid storage portion 42 increases, and finally the fluid 51 flows into the excess liquid storage portion 43 over the partition wall 41. Then, the liquid enters the return pipe 22 connected to the bottom surface and is detected by the water flow sensor 7. When the detection signal is input to the controller 8, it outputs a signal to the pump 3 and controls it to stop. Even if it takes time for the pumping pump 3 to completely stop, the excess liquid will be automatically discharged through the return pipe 22 over the partition wall 41 and set in the fixed amount liquid storage section 42. You cannot store more than the capacity.

[0006]

[Effect of device]

 The fixed amount liquid supply tank of the present invention has a relatively simple structure and can store and supply a liquid of a set volume accurately, and has an effect that a failure hardly occurs.

[Brief description of drawings]

FIG. 1 is a schematic view of a metered liquid supply tank according to an embodiment of the present invention.

FIG. 2 is a schematic view of a conventional fixed amount liquid supply tank.

[Explanation of symbols]

 1 Liquid Storage Tank 2 Liquid 3 Pumping Pump 4 Fixed Volume Liquid Supply Tank 40 Side Wall 41 Partition Wall 42 Fixed Volume Liquid Storage Section 43 Excess Liquid Discharge Section 5 Liquid 51 Liquid 6 Control Valve 7 Water Flow Sensor 20 Inlet Pipe 21 Fixed Volume Liquid Supply Pipe 22 Return Pipe

Claims (1)

[Scope of utility model registration request] 1. A partition wall is provided inside to divide into a fixed amount liquid storage part and an excess liquid discharge part, one end of the introduction pipe is arranged near the bottom inside the liquid storage tank, and the other end of the introduction pipe is fixed. It is placed above the liquid storage part, a pump is attached in the middle of the introduction pipe, a fixed-quantity liquid supply pipe is connected to the bottom of the fixed-quantity liquid storage part, an on-off valve is installed in the middle, and return is made to the bottom of the excess liquid discharge part. It is characterized by connecting a pipe, arranging the other end above the liquid storage tank, installing a water flow sensor in the middle, and stopping the operation of the pump when the liquid flow sensor detects that the liquid is flowing. And a fixed amount liquid supply tank.