RU131154U1 - DOSING DEVICE - Google Patents

Abstract

1. A metering device comprising a housing with a rotor installed inside it with metering cells, a feed hopper with a metering material feeder, a discharge nozzle, a rotor drive shaft and a drive, characterized in that the rotor is made in the form of a hollow cylinder with through cylindrical-conical metering cells in the cylinder wall is mounted on a fixed axis with a central end channel turning into a radial channel, with the possibility of combining cylindrical-conical metering cells with a radial channel and unloading nym rotora.2 pipe during rotation. The dosing device according to claim 1, characterized in that a speed-adjustable drive is used to rotate the rotor.

Description

The utility model relates to devices for accurate continuous dosing, including small doses, of dusty, powdery and fine-grained materials, as well as the supply of these materials to devices with overpressure and can be used in food, chemical, construction, industry and for dusting gas flows in laboratory research of dust cleaning processes.

This technical solution relates to the priority area of science and technology "Technologies for environmentally friendly resource-saving production and processing of agricultural raw materials and food products" [Alphabetical subject index to the International Patent Classification in priority areas for the development of science and technology / Yu.G. Smirnov, E.V. .Skidanova, S.A.Krasnov. -M .: PATENT, 2008.-p.105].

Known metering devices are not allowed to accurately dose powdered and dusty materials in small quantities, especially in a gas stream moving under pressure, since they are oriented to industrial volumes of metered materials.

A device for dispensing bulk materials, including a consumable hopper, under which is installed a rotating drum with metering cells, and a device for loading and unloading [USSR Patent No. 392636, IPC G01F 11/24, publ. July 27, 1973, Bulletin No. 32].

Signs that coincide with the essential features of the claimed device are a housing, a feed hopper, a rotating drum with dosing cells, devices for loading and unloading bulk material.

The disadvantage of an analogue is:

- the inability to dose powdered, pulverized or granular material (for example, cement, flour, catalyst, pepper, pulverized coal, etc.) in small portions;

- the lack of the possibility of forced supply of bulk material into the gas stream;

- the device does not allow you to change the volumetric dose of consumables.

A device for dispensing bulk and lumpy materials is also known, including a drum feeder with cells and a drum with holes located in it, and a drive for rotating the inner drum [A.S. USSR No. 505886, IPC G01F 11/10, published 05.03.1976, Bulletin No. 9].

Signs that coincide with the essential features of the claimed device are a rotating drum with metering cells, devices for loading and unloading bulk material, and a drive for rotating the inner drum.

The disadvantage of an analogue is:

- the impossibility of dosing in small portions of consumables;

- the lack of the possibility of forced supply of bulk material into the gas stream;

- the possibility of incomplete unloading of material from the cells.

A dosing device containing a housing with a rotor installed inside it with cells filled through the feeder with dosing material poured out when the rotor rotates through the discharge nozzle and the rotor drive shaft (AS USSR No. 405023, IPC G01F 11/10, G01F 13/00, published October 22, 1973 in Bulletin No. 44).

Signs that coincide with the essential features of the claimed device are a housing, a rotor with cells, a feeder, a discharge pipe, a rotor drive shaft and a drive.

The disadvantage of the prototype are:

- the device does not provide for the forced supply of powdered or bulk materials into a moving gas stream or into an apparatus with excessive pressure, which reduces the accuracy of dosing.

- the device has large cells, which does not allow dosing in small doses;

- the design of the rotor of the metering device does not allow to have small cells;

- the lack of regulation of the volumetric flow of bulk material due to the use of an unregulated speed drive;

The utility model is aimed at creating a universal dosing device that provides accurate continuous dosing of dusty, powdery or fine-grained materials of a given volume, including small doses into a gas stream or into devices operating under excessive pressure, which is a rather complicated task, and the possibility of changing the volumetric flow rate dosing material if necessary.

The technical result of the utility model is to provide accurate continuous dosing of dusty, powdery or fine-grained materials, both small and large given volume, by creating a guaranteed discharge of the dosed material from the rotor cells by blowing them with compressed gas.

In addition, the technical result of the claimed utility model is to provide, if necessary, the ability to change the volumetric flow of the dosed material by adjusting the rotor speed.

The technical result is achieved in that in a metering device comprising a housing with a rotor installed inside it with metering cells, a feed hopper with a metering material feeder, an unloading nozzle, a rotor drive shaft and a drive, according to a utility model, the rotor is made in the form of a hollow cylinder with through cylindrical -conic cells in the cylinder wall, mounted on a fixed axis, having in the center an end channel turning into a radial channel, with the possibility of combining the metering cells with the radial channel and discharge nozzle during rotation of the rotor.

The cylindrical-conical shape of the cells allows them to be carried out from arbitrarily small to large sizes (for example, depending on the need for loading material with a mass of less than a milligram to several hundred grams into a cell), which ensures the supply of a sufficiently small amount of dosed material, and the through-through nature of the cells ensures the possibility of purging them when combining the cells with the radial channel and the discharge pipe. The conical part of the cells serves to load the dosed material, and the cylindrical part for the passage of compressed gas during purging.

Cell purging makes it possible to force the dosed material into the gas stream or apparatus and ensures its complete discharge from the dosing device.

The implementation of the rotor in the form of a hollow cylinder mounted on a fixed axis, allows to transport metered material in the cells during rotation of the rotor to the discharge pipe without loss.

The end channel in the center of the fixed axis, passing into the radial channel, provides compressed gas to the cell, and the rotor with the possibility of combining the cells with the radial channel and the discharge pipe, when the rotor rotates, allows you to blow the combined cell and provides complete discharge of the dosed material.

In addition, the technical result of the claimed utility model is achieved using a variable speed drive connected to the rotor through the drive shaft, which allows you to change the volumetric flow rate of the dosed material, if necessary.

The utility model is illustrated by drawings, where

figure 1 presents a General view of the claimed device;

figure 2 is a section along aa in figure 1;

In the dosing device shown in the drawings, the elements are indicated by the following digital positions:

1 - housing;

2 - rotor;

3 - feed hopper;

4 - feeder dosed material;

5 - cylindrical-conical metering cells;

6 - end channel;

7 - the axis of the dispenser;

8 - discharge pipe;

9 - radial channel;

10 - a drive shaft;

11 - the bearing.

The metering device includes a housing 1 with a hole in the upper part for the passage of the dosed material. A conical feed hopper 3 is located above this hole. A rotor 2 in the form of a hollow cylinder equipped with through cylindrical-conical metering cells 5 in the cylinder wall is inserted inside the housing 1 with a sliding fit. The rotor 2 is located on a fixed axis 7 with an end channel 6, which passes into the radial channel 9 for air purging of the cells 5. In the lower part, the housing 1 has a discharge pipe 8 for unloading the dosed material. For reliability of filling cells 5 with dosed material, the hopper 3 is equipped with a dosing material feeder 4. The rotor 2 has a drive shaft 10, which is connected to a speed-adjustable drive (not shown). To facilitate the rotation of the rotor 2 on the drive shaft 10 there is a bearing 11. The cylindrical-conical metering cells 5, the radial channel 9, the feed hopper 3 and the discharge pipe 8 are located so that during assembly they are aligned on one axis.

The dispensing device operates as follows (figure 1). When the rotor 2 rotates, the dosed material from the feed hopper 3 fills the cylindrical-conical metering cells 5 and is transported along the wall of the housing 1 to the discharge nozzle 8. When combined, due to the rotation of the rotor 2, the cylindrical-conical metering cells 5 with the radial channel 9 and the discharge nozzle 8 gas (for example, air) entering under overpressure through the end channel 6 and the radial channel 9 blows the dosed material from the combined cylindrical-conical cell 5 through the discharge pipe 8 into the flow to gas or to the apparatus. The metering material feeder 4 forcibly feeds the material to be dosed into cylindrical-conical cells 5 to fill their conical part.

Claims (2)

1. A metering device comprising a housing with a rotor installed inside it with metering cells, a feed hopper with a metering material feeder, a discharge nozzle, a rotor drive shaft and a drive, characterized in that the rotor is made in the form of a hollow cylinder with through cylindrical-conical metering cells in the cylinder wall is mounted on a fixed axis with a central end channel turning into a radial channel, with the possibility of combining cylindrical-conical metering cells with a radial channel and unloading nym pipe as the rotor rotates. 2. The dosing device according to claim 1, characterized in that a speed-adjustable drive is used to rotate the rotor.

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