SU1708404A1 - Grain washing machine - Google Patents

Abstract

The invention relates to the processing equipment of grain processing enterprises, in particular, to a group of combined washing and dewatering machines, and can 6bitb used in the grain cleaning departments of flour mills. The aim of the invention is to improve the quality of washing by more completely separating light impurities and reducing water consumption. The goal is achieved by the fact that in the end part of the hydroseparator near the squeezing column 11, perpendicular to the grain augers, the airfoil is partially submerged in water pipe 6 with a longitudinal slit 7 of constant cross section. The pipe is plugged on one side and enters the window of one of the side walls of the hydroseparator bath on the other. On the hydroseparator housing there is a scale for adjusting and fixing in the working position the wetted edge of the longitudinal slit of the pipe. In addition, the proposed grain washer in front of the pipe has two inclined guide planes 9. 1 C. f-ly, 4 ill. (Ls • vj o004ib. O ^

Description

The invention relates to the processing equipment of grain processing enterprises, in particular, to the group of combined washing and dewatering machines, and can be used in the grain cleaning departments of flour mills.

Combined grain washers are known in which there is a device for taking light weeds to the surface of the water from the hydroseparator. Such devices are designed as splash chambers.

The disadvantage of these washers is that the window for removing light weeds on the surface of the water from the raft chamber is located in the side wall, while rotating the upper grain augers of the hydroseparator create flow along the longitudinal axis of the screws. To remove light weeds to the top layer of water, it is necessary to rotate it by 90 °, which creates a blockage on the surface of the water, increasing its consumption for timely and efficient removal of light weeds. Therefore, enterprises are forced to increase the size of this side window, which leads to a significant increase in water consumption.

A grain washer is also known, & which has a window in the side wall of the hydroseparator for outputting light weeds, but in order to reduce water consumption, to eliminate congestion, an inclined wall is installed in front of the window. This wall allows to partially improve the output of light weeds by changing the direction of flow in the upper water layer through the same side window in the wall of hydroseparator. But in this solution it is impossible to create a solid wall due to the presence of feathers and the auger shaft,

The disadvantages of this washer include the fact that the presence of an inclined wall in the upper water layer does not provide a complete and timely removal of light weeds with minimal water consumption. Therefore, most of the weeds remain in the machine and fall back into the treated grain.

 As a prototype, a washer with an inclined wall at the end of the hydroseparator bath was selected, which directs the upper layer of water together with light weeds to the side window in the longitudinal wall of the bath.

The disadvantages of this washer include the fact that a relatively high consumption is necessary for the timely output of hydrodynamically light weeds.

incomplete removal of weeds is observed with the help of a continuous inclined partition, and its presence above the augers significantly reduces the working

hydroseparator length. This also leads to insufficiently complete isolation of hydrodynamically light weeds from the grain and the loss of a certain part of the grain with heavy weeds.

The purpose of the invention is to improve the quality of washing by more completely separating light impurities, reducing water consumption, and increasing reliability.

5 Figure 1 shows a washing machine.

for grain, a longitudinal section A-A in FIG. figure 2 is the same, top view; Fig. 3 shows a pipe with a retainer and guide planes; figure 4 - hydroseparator screw

0 type and device for the withdrawal of light weeds, cross-section BB in Fig.2.

The grain washing machine consists of a screw-type hydroseparator, including a bath 1 with water, a receiving device

5 2, two upper grain transporting screws 3, half submerged in water, one screw 4 for transporting the settled stones, node 5 for outputting and collecting heavy impurities, pipe 6 with a longitudinal slit 7 and

0 by clamp, bracket 8 with scale, side guide planes 9, toothed driving gears 10, there is a squeeze column 11 consisting of a rotating rotor with inclined vanes 12 and a fixed cylindrical sieve 13. In the upper part of the squeeze column there is a device 14 for receiving the input grains. A mesh 15 is installed in the bath 2. The pipe 6 is installed perpendicular to the grain conveyor augers 3 and is provided with a handle 16. One end of the pipe is provided with a stopper 17, and the second is connected to the side wall window 18. The gears of the augers are located inside the bath and

5 are separated by a grid 15 from the working area of the hydroseparator.

The grain washing machine operates as follows.

The clogged grain is continuously fed by gravity into the receiving device 2, by means of which a reduction in the vertical speed of the grain is achieved and the mixture is quietly introduced into the water in the place where the rotating grain of the upper grain

5 screws 3 create upward flows of water. Grain augers 3 half the diameter of the feathers are immersed in water that flows continuously from the water supply network into the bath 1 hydroseparator. When rotating the feathers of the upper augers 3 grain mixture together with

water stops in the direction of the squeezing column 11. The length, diameter, speed of rotation of the grain augers 3 are set so that during the movement from the point of entry into the water to the squeezing column in the upward flows of water the mixture is divided into three fractions: light, which floats to the surface of the water the heavy one that gets into the zone of action of the lower stone transporting screw 4, cleaned, which is moved by the upper screws to the squeeze column 11. Heavy weeds by the screw 4 are sent to collection 5, from which periodically water flows out etc. are removed from the machine. The cleaned grain with water enters the bottom bowl of the squeeze column. 11, from where the rotating inclined vanes 12 rise in the inner surface of the cylindrical screen 13. Under the action of centrifugal forces and air flows, the grain is dewatered and removed from the upper part of the squeezing column by gravity 14.

Hydrodynamically light weeds that float to the surface of the water in the upper water layer are transferred to the squeeze column 11. With the help of lateral inclined planes 9, the width of the water flow in the upper layer is reduced and directed along with the floating light weeds to the slot of the rotary tube 6. If the weeds are relatively small, then the lower edge of the slot is raised higher; if the weeds are larger, the slot edge is lowered lower, and thus the thickness of the water flow is changed, i.e. the amount of it entering the pipe slot. From pipe 6, water with light weeds gets into the side window and further along the pipe into the sewer network of the enterprise. 1k / L / V V l A A A A A l. V Y V XO-X / (.h I J13 Bodoproyoda.

The guide planes reduce the width of the longitudinal flow of water and direct it along with light weeds into the slot of the pivot pipe. In this case, a complete and timely removal of light weeds from the machine is achieved with less water consumption.

In addition, gears for rotating screws, made of polymeric materials, are located in a bath of water and are separated from the working area by a net. It also reduces water loss through the glands in the bath wall.

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Claims (2)

1. A washing machine for grain, containing a bath made with a window in the side wall, a hydroseparator, grain conveyor augers with toothed driven gears, heavy and light impurity output units, a squeezing column, so that improving the quality of washing by more completely separating light impurities and reducing water consumption, the light impurity outlet assembly contains guide planes and a pipe with a longitudinal slit, the pipe is perpendicular to the grain conveying augers and mounted rotation around its longitudinal axis. one end is plugged, and the other is connected to the side wall window of the bath, with the guiding planes placed vertically and at an angle to the side walls to form a channel narrowing towards the pipe. 2. The machine according to claim 1, characterized by the fact that, in order to increase the reliability of operation, the gears of the augers are located inside the bath and are separated by a grid from the working area of the hydroseparator. -P 9 18 tF-7-i e Lg.2 FiaZ Fa $ M