KR100818560B1 - Cumulate weigher and weighing methode of sand and water - Google Patents

Abstract

An accumulated weighing device of sand and water and a sand and water weighing method using the same are provided to achieve accurate and simple measurement in volume of sand and water by including a weighing bath and compressed air pipes for balancing and discharging. An accumulated weighing device of sand and water comprises a weighing bath(11), a compressed air pipe(13) for balancing and a compressed air pipe(14) for discharging. The weighing bath is equipped with a weight sensing device. The compressed air pipe for balancing causes disturbance in the weighing bath during weighing. The compressed air pipe for discharging promotes discharge of sand and water during discharging.

Description

Accumulated Weighing Device for Sand and Water and Method of Weighing Sand and Water Using It {Cumulate Weigher and Weighing Methode of Sand and Water}

1 is a block diagram of a cumulative measuring device of sand and water.

2 is a state of being weighed.

<Description of the code | symbol about the principal part of drawing>

11.Weigh Tank 12.Gate

13. Balanced compressed air engine 14. Compressed air engine for discharge

15. Load Cell 16. Sand

17. Water 18. Rangefinder

In the manufacture of products that use sand and water as part of the raw material, most of the process involves weighing each material and feeding it into the mixer. A metering device is needed by the number of materials and the location is also required by the number of materials.

When discharging to the mixer after the end of the metering, the sand is not fed and the outlet is often clogged.

Tap the weighing tank with pneumatic or electric vibrator or hammer to promote discharge, but generate large vibration and noise.

One of the major factors affecting the quality of natural sand as a raw material and mixing it with water is the amount of water in the sand.

This is because it is not possible to determine the proper water input without knowing the amount of water contained in the sand.

The method of measuring the amount of water contained in the sand is a resistance measuring method of measuring an electrical resistance by attaching an electrode to the sand, or an absorption or light absorption measuring method of measuring reflected waves by projecting infrared or electromagnetic waves onto the sand surface. However, the error is large.

Even if they are mixed in advance, materials that do not adversely affect the properties of the product or the process of production are changed in a cumulative manner so that the device and space are omitted.

Blow compressed air at the corners where the wet sand is easily drained. It acts as a rod to pick up the blockage of strong airflow.

Another purpose of compressed air is to immerse the sand in water by causing internal disturbances and ripples.

This is because if the surface is horizontal when measuring the volume, the volume measurement is accurate and simple.

Accurate measurement of weight and volume and accurate injection of sand and water can produce products of the correct quality.

This invention is an equilibrium compressed air engine (13) for causing disturbances in a weighing tank (11) equipped with a weight sensing device (15), in the production facility and process of a product using sand and water as part of raw materials. The present invention relates to a cumulative measuring device for sand 16 and water 17 equipped with a compressed air engine 14 for promoting discharge at the time of discharge, and a method for measuring sand and water using the same.

In the weighing device, the device becomes simpler, the blockage phenomenon in the discharge process is eliminated, the surface of the sand and water mixture is leveled, and in the weighing method, the simple and accurate water and sand volume can be measured. Product quality is improved by the production and input of sand and water.

1 is a schematic diagram of the invention of the title.

The balanced compression air engine 13 submerges the peaks of sand exposed on the surface of the water by injecting a strong wind toward the center of the weighing tank. When draining, it prevents only water from falling out and makes it easier to find the mixed volume of water and sand.

The discharge compressed air pipe 14 blows the compressed air toward the discharge port in which the gate 12 is opened at a corner portion where sand easily flows down.

The opening and closing of the compressed air engine is performed by the control device of the manufacturing facility in accordance with the signal of the load cell 15 which is the weight sensing device.

2 is a view in which sand and water in the state in which the balanced compression air engine 13 is closed are sequentially measured. When the equilibrium compressed air is opened, water and sand boil inside and the peaks of the sand collapse and the surface becomes flat.

When the surface is flat, the volume of the contents is accurately calculated with only one measurement by the range finder 18.

In the production of products that use sand and water as part of the raw materials, the process of weighing sand and water into the mixer is based on the following process and method. This is done to improve the quality of the product.

Weighing Steps:
1. In the cumulative weighing tank of sand and water equipped with a weight sensing device, sand is put into the design weight.
* At this time, the sand is sand having a weight including moisture (called surface water) whose content is unknown.

delete

2. Add water irrespective of the design value so that the sand is submerged while blowing the balanced compressed air.
* The reason for adding water even above the designed value is that the sand must be completely submerged so that the surface of the weighing tank is level so that the volume of the contents of the weighing tank can be accurately measured. In this case, inputting beyond the design value can lead to accurate input.

3. The weight of pure sand and water is calculated from the measured height of the water surface and the weight of the sand and water mixture.
* The exact volume of the weighing tank is calculated by the measured height of the water surface, and the weight of pure sand and water is calculated because the specific gravity of water and sand is known when the weight of the weighing tank is measured by the load cell installed in the weighing tank.

Calibration step:
1. Weight and weighing of sand put in step 1 of the weighing stage
In addition to the difference in the weight of the sand calculated in step 3, the sand considering the ratio of the weight of the sand introduced in step 1 of the weighing step and the weight of the sand calculated in step 3 of the weighing step is added.
* The weight of sand measured in 1. of the previous step is the weight of sand including surface water and the weight of sand calculated in 3. is the weight of pure sand.
By the difference between the two figures, sand decreased and water input increased.
Since the difference between the two figures is the ratio of the amount of water contained in the sand, that is, the water content, the additional amount of sand must be added.

2. Add water to and from the pump to reach the sum of the design weight of sand and water.
* After the sand is calibrated in the previous step, if the water input is different from the designed value, adjust the water amount with the pump.

Drain Step: 1. Open the gate and blow out the sand and water while blowing compressed air.

In the weighing device, the device becomes simpler, the blockage phenomenon in the discharge process is eliminated, the surface of the sand and water mixture is leveled, and in the weighing method, the simple and accurate water and sand volume can be measured. Product quality is improved by the production and input of sand and water.

Claims (3)

In production facilities for products that use sand and water as part of raw materials, weighing tanks equipped with a weight sensing device are provided with equilibrium compressed air engines that cause disturbances in the weighing tanks during weighing and discharged air engines that promote discharge during discharge. Accumulated metering device for sand and water. In addition to the apparatus of claim 1, a cumulative metering device for sand and water equipped with a range finder for measuring the volume of the content to be weighed at the top of the metering tank. In the production of products that use sand and water as part of raw materials, the process of weighing sand and water into a mixer is carried out using a cumulative weighing device for sand and water, which is measured, calibrated and discharged in the following process and manner. How to measure sand and water. Weighing Steps: 1. In the cumulative weighing tank of sand and water equipped with a weight sensor, sand is put into the design weight. 2. Blow water into the sand by blowing equilibrium compressed air. 3. Calculate the weight of pure sand and water by measuring the height of the water surface and the weight of the sand and water mixture. Calibration step: 1. Consider the difference between the weight of sand introduced in step 1 and the weight of sand calculated in 3., taking into account the ratio of the weight of sand introduced in step 1 to the weight of sand calculated in 3. Additionally. 2. Add water to and from the pump to reach the sum of the design weight of sand and water. Ejection Steps: 1. Open the gate and blow sand and water while blowing compressed air.

Images