RU23989U1 - DEVICE FOR DETERMINING THE DEGREE OF ROOT TERRESTRIES - Google Patents

Abstract

A device for determining the degree of damage to root crops containing a cylinder with a level gauge and a cylinder cover with a manometer and an air fitting with a non-return valve, characterized in that a displacer in the form of a glass is fixed in the lower part of the cylinder cover with the possibility of filling it with excess liquid when setting the initial liquid level in the cylinder .

Description

Device for determining the damage path

The utility model relates to agriculture, in particular to harvesting root crops and can be used for operational control of their damage.

Known metering mechanism of a fuel dispenser with two metering vessels and a return drain containing metering vessels with drain tubes, metering vessel covers with air valves. 1

However, this measuring mechanism cannot be implemented in the inventive device, since the design of the drain device of the known measuring mechanism does not make it possible to increase the pressure inside the measuring vessels, since they are not tight.

The closest in technical essence and purpose is a device for determining the degree of damage to root crops, including a measuring cylinder with a level gauge and an overflow valve, a measuring cylinder cover with a manometer and an air fitting with a valve. 2

A disadvantage of the known device is the low accuracy of the measurement and its significant dependence on the deviation of the device from the vertical position during its operation.

The problem to which the claimed utility model is directed, and the technical result of its use is to create a device for determining the degree of damage to root crops, which allows to increase the measurement accuracy.

The technical result is achieved by the fact that the device for determining the degree of damage to root crops, consisting of a cylinder with a level gauge, a cylinder cover with a manometer and an air fitting with a valve, is equipped with a displacer in the form of a glass located in the lower part of the cylinder cover.

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The figure shows a diagram of the inventive device.

The device for determining the degree of damage to root crops consists of a cylinder 1 with a level gauge 2, a cylinder cover 3 with a pressure gauge 4 and an air nozzle 5 with a non-return valve. In the lower part of the cylinder cover on the racks, the displacer 6 is made rigidly made in the form of a cup located downside down.

In the process of working with the device for determining the degree of damage to root crops, remove the cover 3 and the cylinder 1 is half filled with liquid 7 (for example, water). After that, the initial volume of liquid in the cylinder is recorded by the level gauge 2. A sample of root crops (for example, potatoes) examined for damage is placed in a container so that all tubers 8 are completely immersed in the liquid. The initial volume in this case increases by the volume filled by the sample. This increase is recorded by a level gauge, on a scale of which the volume of the studied sample of root crops is directly determined. Then the cylinder 1 is hermetically closed by a cover 3 so that the displacer 6 does not touch the potato tubers with its bottom. Excess liquid displaced 7 is poured into the displacer 6 through its edges, thereby setting in the cylinder 1 the initial liquid level for determining the degree of damage. Through the air nozzle 5 pump air to a pressure of 0.3-0.4 MPa. Withstand during the relaxation time (10-30 s). In this case, a decrease in the initial liquid level in the cylinder is observed. During the relaxation time, the volume of the root-tuber crop sample decreases by the DE value, according to which the damage coefficient P is calculated by the formula

n (AV-K-100%) / V,

where P is the damage coefficient of root crops,%;

 - decrease in the volume of the root crops sample, A1 - decrease in the liquid level, m;

(Di - D2 + Bz) is the surface area of the liquid in the device at its initial level, DI is the internal diameter of the cylinder, m; D2 - external diameter of the displacer, m; Oz - internal diameter of the tube of the level gauge, m; to - coefficient taking into account the influence of the species and varietal characteristics of root crops;

V is the initial volume of the root and tuber crop sample, m. A decrease in the sample volume occurs due to deformation inside the tuber surface, which has lost elasticity due to mechanical damage and due to liquid penetration into the cavity of the destroyed tuber structure.

The resulting damage coefficient P is an integral indicator of the damage to root crops.

The use of the proposed model will reduce the time to study root crops for damage, as well as simplify the design and improve the accuracy of the measurement adopted for the prototype device to determine the degree of damage to root crops.

-3-g // /

1.Dmitriev I.A. Equipment for gas stations. -M .: Nedra, 1968. Pages: 16-17.

2. Patent No. 2147121 class. G 01 N 33/02. year 2000.

Sources of information:

Claims (1)

A device for determining the degree of damage to root crops containing a cylinder with a level gauge and a cylinder cover with a manometer and an air fitting with a non-return valve, characterized in that a displacer in the form of a glass is fixed in the lower part of the cylinder cover with the possibility of filling it with excess liquid when setting the initial liquid level in the cylinder .