RU2283268C2 - Aerodynamic conveyor for loose materials - Google Patents

Abstract

FIELD: agriculture, flour-and-elevator, and mixed food industry; transport and discharge of loose materials.

SUBSTANCE: invention relates to pneumatic transport. Proposed aerodynamic conveyor for loose material contains air dispensing and transport channels divides by louvered grid, charge and discharge branch pipes, air feed branch pipe, and settling chamber. Air outlet channel of device communicates by one with transport channel and is separated from transport channel by louvered grid, and communicates through other end with fan through settling chamber. According to invention, discharge branch pipe is made in form of two removal chambers divided by partition. Said partition is provided with sliding part to adjust its free end. Working part of partition is directed by convex surface towards side of discharge of floating up components of material.

EFFECT: increased quality of discharge material, reduced power consumption of device.

1 dwg

Description

The present invention relates to pneumatic transport and can be used in agricultural production, as well as in the flour and grain elevator and animal feed industry for transportation and unloading of bulk materials.

Known aerodynamic chute for moving bulk materials, containing a transport channel with a cross-section increasing in height in the direction of movement of the material, connected by the initial section to the feed hopper, and the end - with a receiving device and a fan suction pipe, and an installed louvre grille along the transport channel, communicating throughout the length of the louvre grille with the atmosphere / 1 /.

Known aerodynamic trough for moving bulk materials has an open-loop air system. This device when working in closed production facilities of grain processing enterprises increases the rate of air exchange, causing the occurrence of drafts, causing colds of staff, i.e. worsens the sanitary conditions of the staff. In addition, to clean the air discharged to the outside, the aeration channel is connected to a centralized aspiration system or a dust separator (for example, a cyclone), which increases the energy consumption of the working process, increases the overall dimensions and metal consumption of the structure.

The closest in technical solution and the achieved result to the present invention relates to an aerodynamic conveyor for bulk materials, containing air distribution and transport channels separated by a louvre grille, loading and unloading pipes, air supply pipe, fan, settling chamber, air exhaust channel communicated at one end with the transport channel and separated from it by a louvered partition, and the other through a settling chamber with a fan / 2 / - prototype.

The well-known aerodynamic conveyor for bulk materials has an air system with a closed cycle of air flow, which virtually eliminates the entry of dusty air into the environment, which leads to an improvement in the working conditions of staff. However, the main disadvantage of the known device is that already at the first stage of processing bulk materials, in particular freshly harvested grain heaps, which include spikelets, flooring, straw and other impurities, it is impossible to isolate a fraction of large straw impurities. Therefore, this circumstance worsens the quality and increases the energy intensity of the grain cleaning process by subsequent machines that are part of the heap processing line.

The essence of the invention lies in the fact that the well-known aerodynamic conveyor for bulk materials containing air-distributing and transport channels separated by a louvre grille, loading and unloading pipes, air-supply pipe, fan, settling chamber, air-exhaust channel communicated at one end with the transport channel and divided with it a louvered partition, and to another - communicated through a settling chamber with a fan, the discharge pipe is made in the form of two outlet chambers p, separated by a partition having a sliding portion and secured at one end by an axis rotatable to adjust the position of its free end, the working portion of the partition is formed with a convex surface that faces towards the discharge pop material components.

As a result of the analysis of literary sources, no identical execution of the proposed device was found. Moreover, distinctive features from the prototype signs give the claimed combination of new properties, manifested in a positive effect.

The discharge pipe in the form of two outlet chambers separated by a partition allows the separation of large straw impurities at the first stage of processing bulk materials, which leads to a decrease in the energy intensity of the grain cleaning process by the following machines in the technological chain.

The partition, having a sliding part and secured at one end by means of an axis with the possibility of rotation to adjust the position of its free end, allows a clearer separation of large straw impurities from grain. This is achieved by choosing the optimal position of the unfastened end of the partition relative to the fractional separation zone of the components of the bulk material by rotating it relative to the axis of the fixed end and moving the sliding part.

The design of the working part of the partition with a convex surface, which faces the discharge side of the pop-up components of the materials, eliminates the formation of vortex air zones that worsen the fractional separation of grain and impurities in the discharge chamber.

As a result, during the operation of the proposed device, a positive effect is achieved that exceeds the effect of the prototype. A new set of features of the claimed device, providing a positive effect, has significant differences.

The drawing shows a diagram of an aerodynamic conveyor for bulk materials.

The aerodynamic conveyor for bulk materials contains a fan 1, an air pipe 2, an air distribution 3 and a transport channel 4, separated by a louvre grill 5, a settling chamber 6, a loading 7 and a discharge pipe. The discharge pipe is made in the form of two outlet chambers 8 and 9, separated by a partition 10 having a sliding part and fixed at one end by means of an axis with the possibility of rotation to adjust the position of its free end. The working part of the partition is made with a convex surface, which faces the discharge side of the pop-up components of the materials. The aerodynamic conveyor is also equipped with an air exhaust channel 11 communicated at one end with the transport channel 4 and separated from it by a louvered partition 12, and the other through a settling chamber 6 with a fan 1. The loading pipe 7 is equipped with a control flap 13, and the discharge chambers 8 and 9 of the discharge pipe have outlet devices 14 and 15, which can be made in the form of screw or lock feeders. In the lower part of the settling chamber 6 is a device 16 output dust and light impurities.

Aerodynamic conveyor for bulk materials is as follows.

When the fan 1 rotates, the air flow generated by it through the air supply pipe 2 enters the air distribution channel 3, and then through the slots of the louvre grille 5 enters the layer of bulk material flowing from the loading pipe 7, fluidizes it and moves it to the discharge devices 8 and 9 of the discharge pipe. In this case, dust and light impurities are separated and taken out from the bulk material through the transport channel 4 into the air exhaust channel 11 and, under the influence of an additional air stream coming through the slits of the louvered partition 12, are sent to the settling chamber 6. In the chamber 6, dust, light impurities are also deposited by the device 16 are discharged to the outside, and the purified air again enters the fan 1 to perform the subsequent process. When passing through the louvre grill 5, the air flow redistributes the components of the bulk material, the main grain is in the lower layer, and large impurities (spikelets, sow heads, straw particles, etc.) float into the upper layer, which has a higher aerodynamic drag. As a result of such movement of bulk material by air flow in the transport channel 4 at its discharge section, the main grain is directed to the outlet chamber 8, and large straw impurities along the convex surface of the partition 10 enter the next outlet chamber 9. The quality of separation of grain from impurities is regulated by setting it in the appropriate position the working part of the partition 10. From the chambers 8 and 9, the separation products of bulk material are directed outward through the outlet devices 14 and 15, respectively.

The advantage of the invention in comparison with the prototype is the separation during transportation of bulk material into fractions, which leads to a reduction in the energy intensity of the grain processing by subsequent machines in the technological chain.

Literature

1. A.S. 1071551 USSR, MKI 3 V 65 G 53/20. Aerodynamic trench for moving bulk materials / N.P. Sychugov, S.A. Podoplelov. - No. 3439688 / 27-11; Claimed 05/17/82 // Discoveries. Inventions - 1984. - No. 5.

2. Patent for invention No. 2205146 of the Russian Federation, MKI 7 V 65 G 53/20. Aerodynamic conveyor for bulk materials / N.P. Sychugov, S.A. Podoplelov, V.E.Saitov. - No. 2001130302/28; Stated November 8, 2001 // Inventions. Useful models. - No. 15 is a prototype.

Claims (1)

An aerodynamic conveyor for bulk materials containing an air-distributing and transport channels separated by a louvre grille, a loading and unloading nozzle, an air supply nozzle, a fan, a settling chamber, an air exhaust channel communicated at one end with the transport channel and separated with a louvered partition, and communicated through the settling partition with the other a chamber with a fan, characterized in that the discharge nozzle is made in the form of two outlet chambers separated by a partition having a sliding part and fixed at one end by means of an axis with the possibility of rotation to adjust the position of its free end, and the working part of the partition is made with a convex surface, which faces the discharge side of the pop-up components of materials.