SU1618800A1 - Method of dust removal from working clothes - Google Patents

Abstract

The invention relates to methods of dusting work clothes and can be used in enterprises with high dust content, mainly mines, metallurgical and cement plants, and plants for the processing of mineral fertilizers. The purpose of the invention is to increase the efficiency of dedusting and prevent wear of the fabric during depletion. The method of dedusting is that the clothing 1 is placed in a sealed cabinet to which compressed air is supplied through ducts in the form of manifolds 3 with nozzles for the outer 4 and inner 5 blowing of the cleaned surface of clothing made of cotton or canvas fabric, and the supply of compressed jets air is carried out alternately on the external and internal surfaces to be cleaned with a period of 2-5 seconds at a pressure of at least 0.5 MPa. 5 il. se A-A a with O5 00 00

Description

The invention relates to the field of cleaning, in particular to methods for cleaning work clothes, and can be used in dusty plants, mainly mines, metallurgical and cement plants, and plants for the processing of mineral fertilizers.

The aim of the invention is to increase the efficiency of dedusting and prevent fabric wear during the dedusting process.

FIG. 1 shows the arrangement of the nozzles when the work clothes are typical type; in fig. 2 shows section A-A in FIG. one; in fig. 3 is a schedule of the process of dusting work clothes; in fig. 4 is a graph of dust removal efficiency; in fig. 5 is a graph of optimization of dedusting efficiency by pressure of compressed air.

The essence of the method is as follows.

Overalls 1 are placed in a sealed cabinet 2, to which compressed air is supplied through a duct system 3 in the form of manifolds with nozzles for external 4 and internal 5 blowing the surface to be cleaned to create a deflection effect and vibrations of clothing parts under pressure of compressed air jets. Compressed air jets to the outer and inner surfaces of workwear 1 are alternated, and the period of change in the direction of discharge of compressed air jets from nozzles 4 and 5 is 2-5 s at a pressure of at least 0.5 MPa.

Examine cotton workwear 6 and canvas 7 fabrics

Example. The dependence of the efficiency of de-dusting of working clothes on the pressure of compressed air and the magnitude of the impulse period (the period of change in the direction of discharge of compressed air jets through the nozzles) is determined.

Different clothes (cotton and canvas) with varying degrees of contamination are carried out.

The pressure of compressed air varies from 0.3 to 0.6; the period of change in the direction of the release of compressed air jets relative to the surface of the workwear fabric to obtain the necessary dedusting efficiency is set in the automation unit, changing it from 0.5 to 6.0 s.

0

five

0

five

0

five

0

five

0

five

Dust removal efficiency is determined by weighing clean, dusty and dust-free workwear and is calculated using the formula

g, 100%

where P, P - the weight of dust in overalls

respectively before and after obespyshvani,

The research results are summarized in the table.

As can be seen from the above data, the effectiveness of dust removal of clothing is determined by the pressure of compressed air and the period of the pulse, i.e. time transfer jets of compressed air relative to the surface of clothing. At the same time, it was confirmed that the compressed air pressure of 0.5 Sha and more and the pulse period of 2–5 s are optimal, as reflected in FIG. 5 for cotton 6 and canvas 7 fabrics.

The above parameter n reveals the method of calculating the effectiveness of dusting workwear in each individual experience, for which the calculation formula is given .. But it is impossible to draw general conclusions from a single measurement, therefore each experiment is repeated at least 8-10 times for a given type of fabric at a constant value pressures of compressed air and already from ten readings calculate the average value, which is shown on the graph (Fig. 4) as E - dust removal efficiency. Thus, the parameter E is the arithmetic average of eight to ten values of 9.

When determining the effect, the magnitude of the pulse period is limited to five experiments for each type of tissue.

FIG. Figure 3 shows the microvibration pattern of workwear for a selected period of changing the direction of release of compressed air jets alternately on the front and back of the workwear. As can be seen from the above scheme, with a period of less than 2 with vibration, in fact, does not occur, so. as compressed air does not have time to inflate the clothing, first in one and then in the other direction due to the transition period. With a period of more than 5s, the garbage simply blows off with a jet of compressed air and when the direction of the blow is changed

rinsing clothes with a wind without microvibration effect.

FIG. Figure 4 shows the graphs of the effectiveness of the dusting of workwear as a function of the period of change in the direction of release of compressed air at a pressure of 0.5 MPa for various fabrics of workwear. It can be seen from the graph that the selected parameters are optimal for both tissues.

As regards the speed of suction of dust, in our case, the suction will occur at any very small

161

800 °

front halves of trousers) are directed

at right angles, i.e. normally, due to the device for implementing the proposed method.

FIG. Figure 1 shows the layout of the nozzles relative to the front surface of the upper element of work clothes of typical type. It can be seen from the diagram that the entire surface is affected by jets of compressed air discharged from the nozzles. The circumference of each nozzle is air pressure on the clothes. Similar picture

ten

the vacuum created by the fan, J5 also occurs when purging

as the fine dust is sucked away, and the larger is deposited in the sump. In addition, the constant pressure of the compressed air prevents dust from settling back into protective clothing.

Claims (1)

Wear of the fabric of workwear 1 when applying the effect of microvibration does not occur, because the fabric with the specified parameters of dedusting under the surface of workwear 1. The formula of the invention 20 A method of dedusting workwear, including the operation of placing it in an airtight cabinet, leading the compressed air through the duct system and releasing it through the nozzle to the exterior and no mechanical impact — 25 internal cleanable surfaces for creating the effect of deflection and oscillation of parts of clothing under the pressure of jets m, only washed out of the fabric dust. A dedusting method is provided for use both in typical clothing cut (jackets, shirts, trousers, etc.) and in any new cut pattern, since typical human figures remain basically unchanged, as well as clothing items. All nozzles in relation to both the front and back of the working surface 1 and its elements (back, shelves, sleeves of the jacket, back and compressed air differ 30 35 so that, in order to increase the efficiency of dedusting and prevent tissue wear, during dedusting, the jets of compressed air are expelled to the outer and inner surfaces alternately, and the period of change in the direction of release of the jets of compressed air is 2-5 seconds less than 0.5 MPa. Brezentova jacket, art. 11130 1150 Jacket tarpaulin, art. 11227 takes place when pursing purse Workwear Surfaces 1. Invention Formula The method of dedusting workwear, including the operation of placing it in an airtight cabinet, leading the compressed air through the duct system and releasing it through the nozzle to the exterior and compressed air distinguish so that, in order to increase the efficiency of dedusting and prevent tissue wear, during dedusting, the jets of compressed air are expelled to the outer and inner surfaces alternately, and the period of change in the direction of release of the jets of compressed air is 2-5 seconds less than 0.5 MPa. At a pressure of 0.3 MPa 2 3 3 3 2 118 107 58 67 50.8 46.7 four four 1215 1220 1225 Jacket cotton, art. 3092 Jacket cotton, art. 3509 At a pressure of 0.4 MPa and brezentoart. 11227 1150 1270 1280 1275 1260 1330 1196 1204 1205 1188 1216 and brezentoart. 11119 1300 1420 1415 1430 1400 1460 1343 1347 1356 1335 1350 Jacket cotton, art. 3092 Table continuation 65 70 75 43.5 42.9 32.4 four four four 80 85 81 65 70 31 32 34 28 31 61.3 62.3 58.0 56.9 55.7 3 3 3 four four 90 85 85 72 77 46 43 40 35 34 60.0 49.2 52.9 51.4 56,8 four four 3 3 3 46 54 55 38 66 6 1, -7 58.5 56.0 65.5 63.3 3 3 four four 3 43 47 56 35 50 64.2 59.1 64.6 65.0 68,8 3 3 3 four four 95 75 60 80 70 21 nineteen 13 15 17 77.9 74.7 78.3 81.2 75.6 four four 3 3 3 Jacket cotton, art. 3509 450 Jacket tarpaulin, art. 11130 1150 Jacket tarpaulin, art. 11119 1300 Jacket tarpaulin, art. 11227 1150 Jacket cotton, art. 3092 400 Jacket cotton, art. 3509 450 Jacket tarpaulin, art. 11130 1500 79.1 84.0 81.2 77.7 84.0 3 3 3 3 3 91.7 100.0 100.0 80.0 3 four 3 2 100.0 84.0 92.3 100.0 3 four four four 100.0 90.0 86.6 100.0 3 3 2 3 100.0 90.0 100.0 100.0 3 3 four 3 91.0 100.0 100.0 90.0 four 3 3 3 100.0 86.1 92.9 four four four one) 1618800 Jacket tarpaulin, art. 11227 1150 Jacket cotton, art. 3092 400 Jacket cotton, art. 3509 450 - Jacket cotton, art. 3092 400 Jacket tarpaulin, art. 11227 1150 Jacket cotton, art. 3092 400 12 Table continuation four four four 3 3 3 3 3 3 3 3 3 3 3 3 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 52.7 55.0 1.0 1.0 Jacket tarpaulin, art. 11227 1150 Jacket cotton, art. 3092 400 Jacket tarpaulin, art. 11227 1150 Jacket cotton, art. 3092 400 Jacket tarpaulin, art. 11227 1150 Jacket cotton, art. 3092 400 85.0 94.7 00.0 7,8 00.0 80.0 86.0 90.4 88.9 94.4 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 91.0 100.0 4.0 4.0 Jacket tarpaulin wa. art. 11227 1150 Jacket cotton, art. 3092 400 Jacket tarpaulin, art. 11227 1150 Cotton jacket, s-art. 3092 400 Jacket tarpaulin, art. 11227 1150 4.0 450 4.0 4.0 4.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 FIG. one four ten 0 $ .5 is io 3.0 iff 5,0 ta IT IT ftfa o.s WP.nns. Upright compressed air ue.S