SU1500840A1 - Apparatus for accounting the amount of solid in pulp with no-pressurized hydrotransport along open troughs - Google Patents

Abstract

The invention can be used in the development and transportation of the mineral by hydraulic method along open chutes. The purpose of the invention is to improve the accuracy of accounting for the amount of solid in the pulp. Coal in the form of pieces of various sizes gets into the open trough and is transported by gravity with water to the measuring section 2 of the device. The amount of transported water equal to the volume of the solid on the narrowed part of the measuring section 2 of the chute is displaced and poured through the slots of the movable dampers into the liquid collection, from where it is discharged through the flow meter 13 through the drain pipe 14 into the main chute 15. 5 Il.

Description

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The invention relates to methods for measuring the amount of solid with different granulometric composition in the pulp and can be used in the development and transportation of mineral resources by hydraulic means.

The purpose of the invention is to measure accuracy.

Figure 1 schematically shows the device, a longitudinal section; Ia fig-2 - the same, view in plan; in FIG. 3, section A-A in FIG. 1 (structural diagram of the device of the constricted part of the measuring section of the chute); in Fig. 4. - node I in Fig. 3; in FIG. 3, node II in FIG.

The device consists of sections of an open trough 1 (Figures 1, 3, 5) with a double bottom, a measuring section 2 with a narrowed part of the trough with a fluid collector 3 connected geometrically to each other by seals 4 (FIG. 3) with the help of threaded connections of the scientific research institute 3. Sections 1 and 2 (Fig. 1). Are inserted into the division chute f. On the narrowed part of the measuring section 2 (Fig. 1, 2), in the grooves 6 (Fig. 3, 4) there are installed shutters 7, reinforced on the inside by rubber 8 and the hinge, interconnected by a pull 9 with a drive of their reciprocating movement 10.

The shutter 7 is made with overflow slit 11 (Fig.1, 3, 4), in contact with the Windows 12, made at the narrowed part of the measuring section 2 (Fig.1, 2). Accounting for the amount of solid in the pulp is carried out by a flow meter 13 (Fig. 2) installed in the inlet section 1, and the liquid after measurement is taken through the drain pipe 1 4 and further to the main chute 13.

The operation of the device and the method of accounting for the amount of solids in the pulp in the free-flow hydrotransport along open chutes are carried out as follows.

Sections 1 and 2 (Fig. 1) of the device are introduced into the district rf trough on the end portion of the latter in the area of pulp bypass into trough 13 (Fig. I, 2) of the main production, for example, accumulating drift or slope of hydraulic shaft. . Before starting work on hydroturbing or excavating, for example, coal with a combine trench line, as usual, it is washed with water in the amount of

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ve required for hydrotransport solid. During this flushing, a production metering device is set up. The setting consists in establishing, by means of the movement mechanism 10 (Fig. 3), the shutters 7 in v such that the lower section 11 (Fig. 4) is flush with the surface of the stabilized flow of water in the narrowed part of the gauge 2 of the chute 2 (Fig. 12). After the start of work on the extraction of coal in the form of pieces of various sizes gets into the precinct grooved becoming ff (figure 1) and by gravity with water is transported to the measured section 2 (figures 1, 3). devices. The amount of water transported, equal to the volume of the solid on the narrowed part of the chute 2, is displaced and poured through the slots 11 (Fig. 3) into the space between the bottoms, from where it flows through the discharge pipe 14 through the flow meter 13 through the drain pipe 14 (Fig. 1, 2). Since the whole pulp (water 4 - coal) from the site for the entire period of coal extraction (shift, day) passes through measuring section 2, the amount of coal produced by volume will be equal to the amount of water displaced, which takes into account the meter and is summable over time. Depending on the stabilized water flow, the position of the slit And the shutters 7 can be adjusted in the range B (Fig. 4).

The presence of a narrowed part of the gutter in the measured area allows the pulp flow rate to increase and increase and, consequently, accelerate the overflow of the water displaced by the coal through the slits in the flaps by increasing the gravity component, and the rubber that reinforces the gates closes the windows on the narrowed part gutters, thereby preventing leakage of water into the cavity between the bottoms of the gutters of the device. In turn, sealing the cavity with seals excludes the possibility of water penetration both into and out of the cavity, and the water column enclosed in the cavity creates backwater in front of the meter, which favorably affects the accuracy and reliability of the latter. Thus, directly at the mining site, direct accounting of the amount of coal recovered is carried out, and the return of the WATER driven out by coal into the main stream stabilizes the subsequent hydrotransport process as a whole.

Claims (1)

Invention Formula A device for measuring the amount of solids in the pulp in free-flow hydrotransport along open grooves, containing a measuring section and a flow meter, differs in that, in order to increase the accuracy 08406 the measurement, a liquid collector with a drain pipe is inserted into it, in which the flow meter is placed, the measuring section of the groove is made with a narrowed section formed by two side walls, each of which has a window covered with a shutter. a fluid collector is placed under the flaps, which are associated with the drive of their reciprocating movement. 12 I fieL FIG 3 Editor I.Segkhshnik Compiled by M. Veshchunov Tehred M. Didyk Order 4851/34 Circulation 660 BNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Koskva,, Raushsk nab., 4/5 Production and Publishing Combine Patent, Uzhgorod, st. Gagarin, 101 0t / S.S Proofreader M.Vasilyeva Subscription