JPH0328327Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field The present invention relates to a display device that, when integrating a flow rate using a batch counter or the like, displays the current integrated amount relative to a set amount in analog form as a percentage.

Prior Art Batch counters are used to charge a fixed amount (target amount) of liquid into a tank or discharge it from a tank. For example, when a target amount is set using a batch counter and a start button is pressed, a valve is opened. opens and the flow meter starts operating, the pulse transmitter sends pulses corresponding to the flow rate to the batch counter, and when the number of pulses reaches the set value, a signal is emitted from the batch counter and the pulse stops and the pulse is closed. It involves preparing or distributing a fixed amount. In conventional batch counters, when a target amount is set, this set amount is displayed digitally, and the cumulative amount after the start of liquid flow is set by receiving the flow rate pulse from the flow meter and subtracting it from the digitally displayed value. The current cumulative amount can be calculated either by a subtraction method that displays the remaining amount relative to the volume, or by an addition method that sets the digital display value to zero at the set point and adds and displays the flow rate pulse from the flow meter after the start of fluid flow. I am trying to express it. However, since these are both digital displays, it is difficult to intuitively understand how much the current integrated amount is relative to the set amount.

Purpose The present invention was developed in view of the above-mentioned circumstances, and in particular, the purpose of the present invention is to provide an indicator that displays the current integrated amount as a percentage of the set value when integrating the flow rate using a batch counter. This was done as a.

Configuration Fig. 1 is a main part configuration diagram for explaining one embodiment of the display according to the present invention, in which 10 is a display section, 11 is a pulse motor, 12 is a frequency divider, and 13 is a setting device. , 14 is a pulse transmitter provided in the flowmeter, and the display section 10 has a display bar 1 whose surface is divided into two parts 1a and 1b by a spiral 1' and color-coded.
, a slit plate 2 having a slit 2a parallel to the axis of the display rod 1, and a slit 2 of the slit plate 2.
The cylinder lens 3 is disposed so as to have its focal point near the surface of the display rod 1 through the lens a. 2 is a plan configuration diagram of the display unit 10 when viewed from the - line direction in FIG. 1, and FIG. 3 is a diagram when viewed from the direction, in which the display bar 1
When rotated by , the inclined surface A visible through the slit 2a of the spiral 1' moves upward in accordance with the rotation of the display rod 1, and in the illustrated example, 50% is displayed in analog form. .

Therefore, in the batch counter, the setting device 1
3, an arbitrary desired value X is set, and when the preparation amount or catering amount reaches the set value X, the preparation or catering is finished, but at that time, the display on the display unit 10 must display 100%. Must be. For this purpose, the pulse motor 11 must be set at any set value
It is also necessary to make one revolution when the number of flow pulses corresponding to the set value is received. Here, now the pulse motor 11 is N
It is assumed that the pulse makes one revolution, the setting value of the setting device 13 is 10/P, 1/
P, 0.1/P, etc.), and if the ratio between the setting unit of the set value and the weight of the flow rate pulse from the flowmeter, that is, the input pulse unit, is n, then the frequency division ratio of the frequency divider 12 is N/ If nX, when receiving a flow rate pulse for the set value Show that.

Effects As is clear from the above explanation, according to the present invention, it is possible to attach an analog display with a simple and inexpensive configuration to a digital batch counter, allowing the present value to be visually and intuitively displayed relative to the target value. can be judged.

[Brief explanation of the drawing]

FIG. 1 is a main part configuration diagram for explaining one embodiment of the display device according to the present invention, FIG. 2 is a view seen from the - line direction of FIG. 1, and FIG. It is a figure seen from the direction. 10...Display unit, 11...Pulse motor, 12
... Frequency divider, 13 ... Setting device, 14 ... Flow rate pulse transmitter, 1 ... Display bar, 2 ... Slit plate, 3
...Cylinder lens.

Claims (1)

[Scope of utility model registration request] a cylindrical display rod whose surface is divided into two by a spiral and color-coded; a slit plate having a slit parallel to the axis of the display rod; and a slit plate parallel to the slit and whose focal point passes through the slit. a cylinder lens disposed so as to be near the surface of the display bar, a pulse motor that rotates the display bar once with N pulses (N = integer), and a frequency dividing circuit that divides the frequency of the input pulse P into N/nX. 1. A display device comprising: a display device, wherein the pulse motor is driven through the frequency dividing circuit (where X is a set value, and n is a ratio of the unit of the set value to the unit of input pulse).