JPS6038191Y2 - Automatic weighing device for attached water - Google Patents

Description

[Detailed explanation of the idea] It is well known that when concrete is made by mixing an appropriate amount of gravel, sand, and water with cement, the ratio of water affects the quality, but if the sand is wet. Because it has such a large surface area, it is easy to mistake the amount of water that falls on it by sight or feeling.

The present invention relates to an automatic measuring device for the amount of water deposited on sand, which can be automatically determined by weighing the amount of water deposited on sand using the sample. Moreover, the equipment is simple and small, and the time required for weighing is short.

Conventionally, the amount of water that can withstand this type of landing has been determined by visual measurement or by weighing after drying in the sun. This method was time-consuming and troublesome, required a large space, and required manpower, and it was also difficult to obtain accurate values.

The present invention has been proposed in view of these points, and is capable of automatically displaying the amount of water that has landed.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 4, in which it is applied to weighing wet sand.

The present invention consists of a sensor or weighing device 4 arranged separately in a housing 1 having a side window 2 on the lower side, a weighing pan 6 for weighing the sand placed thereon with the weighing device 4, and a weighing pan 6 for weighing the sand placed on the weighing device 4. A sample input tube 7 that opens above the dish 6, a hot air tube 8, and a fumarole pipe 10 having three fumarole ports 9 (9a to 9c) in this example are connected to the input tube 7 from the outside. The introduced wet sand 5 (sample) is guided and placed on a weighing pan 6, and is dried by hot air from a hot air cylinder 8 until it becomes dry sand. At this time, the sand 5 is blown away toward the side window 2 by receiving the fume from the fume nozzle 9, and this fume is also blown away by the solenoid valve 11 provided in the fume pipe 10.
(See Fig. 2) is operated, and the operation of this solenoid valve 11, the above-mentioned drying operation, and operation of feeding the sample sand 5 are made to issue predetermined commands based on input signals sent from the weighing device 4. It is also regulated by the computer device 2 (see FIG. 4).

First, regarding the mechanical components of the present invention as described above.
First, a detailed description will be given with reference to FIGS.

In FIG. 3, the housing 1 has internal tension bones 13 (13a to 13L).
], and the outer surface except the bottom surface is formed into a box shape that opens downward by attaching the outer plate 14 (14a to 14e), but there is a window 2 (see Fig. 1) at the bottom of one side. A partition plate 15 is provided with one side edge attached to the lower edge of the window 2 and rises diagonally to partition the inside of the casing 1, and further,
A chassis 16 (16a to 16C) is provided in which the hot air cylinder 8, solenoid valve 11, and weighing device 4 are respectively attached.

The sample input tube 7 is attached to the outer surface plate 14a (upper surface plate) so that the upper part lower a opens to the outside, and the hot air tube 8 is provided with a blower 17 and an electric heater 18 to heat the outside air. Air is blown toward the weighing plate 6.

An interlocking rod 19 (see FIG. 1) is provided below the partition plate 15 to freely insert the partition plate 15 from the weighing device 4 installed on the chassis 16b for earthquake prevention. is attached to the upper end, and the sand 5 placed on this weighing pan 6 is
is weighed by a weighing device 4 via an interlocking rod 19 and transmitted.

Next, to explain the electrical components of the present invention, FIG. 4 shows an operational system diagram of the computer device 12, and as shown in the figure, this computer device 12 includes a microcomputer 21, a measurement command switch 22, a weighing Signal amplifier 23, A-D converter 24, interface 25, display 26, DC power supply 27, sandbox gate (details are shown in Figure 1~
29 (not shown in FIG. 3), and is incorporated as shown.

Then, from the DC power supply unit 27 to the microcomputer 21
When power is supplied to the display section 26, the display section 26 is cleared, and then when the measurement command switch 22 is turned on, the signal from the weighing device 4 corresponding to the weighing value W0 of the tare on the weighing pan 6 is transmitted to the weighing signal amplifier 23. The signal is amplified by the A/D converter 24, converted into a digital signal, and supported by the microcomputer 21.

The microcomputer 21 stores the received signal and sends a sand loading command to the sand loading gate 29, so that an appropriate amount of sample sand is placed on the weighing pan 6 via the loading cylinder 7.

Here, a signal corresponding to the weighed value W□ is sent from the weighing device 4 to the microcomputer 21 in the above-mentioned order.
The microcomputer 21 further stores this, and
The blower 17 and electric heater 18 are started to dry the sample sand.

During drying, the microcomputer 21 receives and stores corresponding signals of the weight value of the sand 5 every moment, and when the weight value Wn reaches the same as the previous weight value wn1, the electric heater 18 and the blower 17 are connected to each other. While cutting off the power, calculate -W 1X100, display it as a percentage on the display 26, operate the solenoid valve 11 to blow away the sample sand 5, and when the weighed value from the weigher 4 becomes Wo. , the solenoid valve 11 is closed and returned to an unconditioned state to wait for the next measurement command to command the mechanical components of the invention to operate.

Since the present invention is structured and operates as described above, according to the present invention, both the mechanical components and the electrical components are combined into a small size, making it convenient to transport, and the wet sand sample is As mentioned at the beginning, weighing does not require any manpower or large area and is easy to use. can be quite simple.

Although the above description has been made regarding the case where it is applied to wet sand, the present invention is not necessarily limited to this. It goes without saying that it can be widely used as a measuring device.

[Brief explanation of the drawing]

Fig. 1 is a front view showing the mechanical components of an embodiment of the present invention, Fig. 2 is a side view cut away to show the inside of Fig. 1, and Fig. 3 is a partially exploded view of Fig. 1. An enlarged perspective view showing the inside of the
FIG. 4 is an explanatory diagram showing one example of the electrical components of the present invention related to FIG. 1. 1 is a housing, 2 is a side window, 4 is a scale, 6 is a weighing pan, 7 is a charging cylinder, 8 is a hot air cylinder, 9 is a blowhole, 10 is a blowpipe, 11 is a solenoid valve, and 12 is a computer device. be.

Claims (1)

[Scope of utility model registration request] A casing having a window on the lower side, a sensor separately arranged in the casing, a weighing pan on which an object to be weighed is placed and the sensor is operated to perform weighing, and a side facing the top of the weighing pan, respectively. a solenoid valve provided in the fumarole pipe, which has an open input cylinder for the object to be weighed, a hot air cylinder for drying hot air, and a fumarole port of the fumarole pipe for blowing off the object to be weighed; It has a computer device that issues commands based on input signals from the sensor, and the commands from the computer device regulate the inputting of the object to be weighed, the hot air drying, and the operation of the solenoid valve, and also automatically control the amount of water attached. An automatic weighing device for attached water, characterized by displaying the following: