RU91172U1 - DEVICE FOR DETERMINING WOOL OUTPUT - Google Patents

Abstract

A device for determining the yield of wool, containing a hydraulic system, including a hydraulic cylinder, a plunger pump with a manual drive, an oil tank and a manometer, a working chamber for placing and compressing a sample of unwashed wool, made in the form of a sleeve, on the open side of which there is a removable cover with a locking ring, and on the opposite side, at the outlet, it is connected to a hydraulic cylinder, characterized in that a slot is made on the side surface of the working chamber on one of its sides along the length of the piston stroke, through which yes A chuck made in the form of a metal plate connected to the piston with the possibility of moving it along the slot to record the piston moving by changing its position after compression, followed by measurement using a scale ruler with a scale and determining the height of the column of the pressed-in sample, the value of which is used in the calculation for determination of the yield of wool.

Description

The utility model relates to devices for determining the yield of wool and can be used in agriculture for the purchase and sale of wool, as well as in assessing the wool productivity of sheep in breeding to establish a conditionally clean wool mass with a given error in determining the wool yield of not more than ± 2% abs . accelerated method by compressing a sample of unwashed wool, excluding the traditional washing and drying of the fiber with the subsequent determination of residual wool components.

The prior art device for determining the yield of wool [1], comprising a scale with a platform on which a steel cylinder is mounted, mounted on the platform of the scale with the ability to move on girders placed on machines and fixed with a screw, and a special frame with placed on it above the cylinder a pressure screw and a helm connected to each other by a gear mechanism, which ensures that the screw rotates in the vertical direction when the helm rotates. To determine the position of the pressure screw, use a scale ruler with a scale along which the slider connected to the pressure screw slides. A sample of unwashed wool weighing 3 kg is placed in a cylinder and the balance is balanced. Then, weights corresponding to a mass of 1 t are placed on the weighing pad. The sample is compressed by lowering the pressure screw, which presses through the wool onto the weighing pad. When the balance is balanced, notice the position of the pressure screw and calculate the volume of compressed wool by calculation. It will be the smaller, the less wool fiber is in the sample of unwashed wool. Using this dependence, wool yield is determined as a percentage.

The known device has not found wide application in practice due to its bulky design (weight up to 2000 kg) and lack of manufacturability associated with the complexity of its use.

A device for implementing a method for determining the fiber content in fibrous raw materials (see ed. St. USSR No. 1684666, class G01N 33/36, D01B 3/00, 1991, bull. No. 38), containing a measuring chamber for placing samples with known mass (200 g), a feed screw with a pressing plate, rotating at a given speed during compression of the sample, a force measuring device for measuring the compression force in the range of 50-400 kPa, mechanically connected to the bottom of the chamber. This device is used to determine the content of pure fiber in the mass of wool fibers, depending on the compression parameters, providing for the subsequent calculation of the yield of wool the error of determination is ± 2% abs. However, the design flaws of the device associated with the use of sensitive equipment for measuring compression parameters and requiring special maintenance skills limit its use in the laboratory.

The closest in technical essence and the achieved effect and accepted by the authors for the prototype is the hydraulic device GPSHO-2M [2, 3], containing a hydraulic system including a hydraulic cylinder, a plunger pump with a manual drive, an oil tank and a manometer, a working chamber for placement and compression of the unwashed sample wool, made in the form of a sleeve, on the open side of which there is a removable cover with a locking ring, and on the opposite side at the outlet it is connected to the hydraulic cylinder. The operating principle of the GPSHO-2M hydraulic device is based on compression under pressure of a wet sample of washed wool. After holding for 1 minute at this pressure, a practically constant amount of moisture remains in the sample, as a result of which a regular relationship is established between the sample mass after compression and its constantly dry mass. The pressed sample is weighed and its constantly dry mass is calculated by the formula or according to the table. The use of a hydraulic device for determining the constantly dry mass of washed wool (5-7 min.) Using the accelerated method allows reducing the analysis time for determining the yield of wool. However, the use of this device for known purposes does not exclude the time-consuming and lengthy washing and drying operations of wool samples associated with a large number of operations (sampling, weighing, washing, drying, determination of residual wool components, calculation of wool yield), requiring the use of a large set of devices and equipment.

The technical result that can be achieved using the utility model is to increase the analysis performance while ensuring the efficiency of determining the wool yield by the accelerated method with an error of not more than ± 2% abs., As well as to increase the reliability of the design in order to use small-sized equipment for assessment quality of wool in laboratory, industrial and field conditions (for example, during the shearing season).

The technical result is achieved using a device for determining the yield of wool containing a hydraulic system, including a hydraulic cylinder, a plunger pump with a manual drive, an oil tank and a manometer, a working chamber for placing and compressing a sample of unwashed wool, made in the form of a sleeve, on the open side of which there is a removable cover with a locking ring, and on the opposite side at the outlet it is connected to the hydraulic cylinder. In the device on the side surface of the working chamber, designed to accommodate and compress the unwashed wool sample, a slot is made from one of its sides along the length of the piston stroke, through which a sensor is made, made in the form of a metal plate connected to the piston with the possibility of moving it along the slot for fixing the progress of the piston and changing its position after compression, followed by measurement using a scale ruler with a scale height of the column of the pressed-in sample, the value of which is used in ete to determine the yield of wool.

In FIG. presents a General view of the device for determining the yield of wool based on the hydraulic device GPSHO-2M [3].

A device for determining the yield of wool contains a hydraulic system, including a hydraulic cylinder 1, a plunger pump 2 with a manual drive 3, an oil tank 4 and a pressure gauge 5, a working chamber 6 for accommodating and compressing the unwashed wool sample 7, made in the form of a sleeve, on the open side of which there is a removable a cover 8 with a locking ring, and on the opposite side at the outlet it is connected to the hydraulic cylinder 1. On the lateral surface of the working chamber 6, on one of its sides along the length of the working stroke of the piston 9, a slot 10 is made through which the sensor 11 is drawn out molded in the form of a metal plate connected to the piston 9 with the possibility of moving it along the slot 10 to fix the progress of the piston 9 by changing its position after compression, followed by measurement using a scale bar with a scale of 12 and determining the height of the column of the pressed sample 7.

A device for determining the yield of wool works as follows. A sample 7 of unwashed wool weighing 100 g is placed in the working chamber 6 of the device and compacted with hands. Then the chamber 6 is closed with a lid 8 and clamped with a locking ring. A manual actuator 3 drives a plunger pump 2, pumping oil from the tank 4 to the hydraulic cylinder 1, as a result of which the piston 9 moves and compresses the sample 7 under the pressure created in the hydraulic system. Upon reaching the specified pressure set by the manometer 5, to hold it for 15-20 seconds, periodically press the handle of the pump 2, while using the sensor 11, the progress of the piston 9 is recorded by changing its position after compression, then using a scale ruler with a scale 12 measure and determine the height of the column of the pressed sample 7, the value of which is used in the calculation to determine the yield of wool. Unlike the prototype, the claimed device allows the use of a well-known small-sized device for a new purpose, to preserve the simplicity of design, to reduce the cost of testing to assess the quality of wool raw materials. This design has high reliability due to the small number of additional parts mechanically rigidly interconnected. The error in determining the yield of wool within ± 2% abs., Sufficient to solve the technical problem, is achieved by using the compression parameter in the calculation - the column height of the pressed wool sample, determined using a sensor to measure the change in the position of the piston after compression at constant pressure in the working a chamber created by a hydraulic system. Measurement error at a given pressure allows to reduce the error of determination, which ensures a close correlation between the attributes by eliminating the influence of unwashed wool contained in it, along with pure fiber, its other components (plant litter, moisture, sweat, etc.).

The use of the claimed device for determining the yield of wool by the accelerated method will allow to obtain an economic effect by eliminating the washing, drying of the samples and determining the residual non-wool components in them, while reducing labor costs, water consumption, energy consumption, detergents, reagents and materials.

List of sources used

1. Leites, L.G. Primary processing of wool / L.G. Leites, N.A. Zausailov. - M. - Leningrad: GNTI light industry, 1950. - P.32-33.

2. Sidortsov, V.I. Quality control of wool / V.I. Sidortsov. - M .: Kolos, 1974. - S.48-51.

3. Determination of the quality of unwashed wool and the yield of pure fiber (methodological guide). - M .: IN "Agropromizdat", 1989. - P.27-38.

Claims (1)

A device for determining the yield of wool, containing a hydraulic system, including a hydraulic cylinder, a plunger pump with a manual drive, an oil tank and a manometer, a working chamber for placing and compressing a sample of unwashed wool, made in the form of a sleeve, on the open side of which there is a removable cover with a locking ring, and on the opposite side, at the outlet, it is connected to a hydraulic cylinder, characterized in that a slot is made on the side surface of the working chamber on one of its sides along the length of the piston stroke, through which yes A chuck made in the form of a metal plate connected with a piston with the possibility of moving it along the slot to record the piston moving by changing its position after compression, followed by measurement using a scale ruler with a scale and determining the column height of the pressed-in sample, the value of which is used in the calculation for determination of the yield of wool.