RU1791401C - Batcher for loose components of glass mixture - Google Patents

Abstract

SUMMARY OF THE INVENTION: to simplify control of a two-speed unloading mode and increase the reliability of the transition from one batching rate to another, the space of the weighing unit at the bottom is divided by at least two vertical walls. A diaphragm placed perpendicular to the septum is made with two holes for coarse and accurate discharge of these components. During operation of the device, the transition from one dosing rate to another is carried out spontaneously upon reaching the vertical partition by the dosed material and emptying the volume with a large dosing hole. .6 ill.

Description

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WITH

The invention relates to the dosing of bulk components of a glass batch and can be used in glass factories in processes related to the preparation of a glass batch, in particular, it can be used in equipment for metering and mixing workshops of the glass industry. Specifically, the technical solution relates to the design of the dispensers used to prepare the glass charge. The use of the invention in the chemical, food, pharmaceutical industries of the national economy is not excluded.

The closest technical solution to the claimed is a sand dispenser, consisting of a weighing hopper, shut-off and backfill loading valves, shut-off and backfill unloading valves and lever scales. The dispenser has its own control system. During operation during the unloading command, the pneumatic cylinders of the shut-off and backfill valves open the gravity unloading feeder. Intensive sand discharge begins. When the dial pointer reaches the sensor weights, the exact discharge control system closes the filling valve, the discharge slows down, since the material is discharged through a calibrated hole of a smaller diameter. At the end of dosing, the weight zero sensor activates and the shutoff valve closes. In a similar sequence, load feeder mechanisms 1. This dispenser, which implements a two-speed mode of operation of the feeders, does not have high reliability in the transition from one speed to another, since at this time a large number of mechanisms and sensors are involved that provide their own N | H)

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ABOUT

It is a transition from one speed to another. if one of them fails, in-person dosing becomes impossible. Moreover, the system becomes inoperative even if the operating mode, for example, one of the two spinning mechanisms of one or two feeders, is disturbed.

As a result of this, the dispenser is equipped with a false electronic control circuit, it also affects the reliability of the dispenser as a whole towards its decrease.

The purpose of the invention is to increase the reliability of the transition from one discharge speed to another.

 The goal is realized in that in a device for dispensing bulk components of a glass shield containing a suspension bin with a loading valve, a weighing batcher with a discharge valve and an assembly conveyor, the weighing batcher is equipped with a diaphragm and a vertical partition in the lower part, which can be used to separate the volumes intended for high speed and low 6k6r6stn6y discharge, and the diaphragm contains at least two holes for coarse and accurate discharge of these components.

The weighing batcher is provided at the bottom with a diaphragm with two openings for coarse and precise discharge of components. This allows for separate discharge of the dispenser into the corresponding hole, the calibration of which can be designed for coarse (high speed) and. Accurate (low speed) discharge. In the prior art, this design technique is not used.

In connection with the reality of the positive result brought by this distinction, it should be qualified as essential. ....; ..,

The dispenser is equipped with a vertical partition dividing the lower part of the dispenser into several volumes according to the number of holes in the diaphragm. Each volume is intended for either coarse (high speed) or precise (low speed) discharge. This provides a simplified control of the transition from one unloading speed to another, which in this case completely depends on the vertical partition, which determines the ratio of divided volumes by its height.

In FIG. 1 shows a device, a longitudinal section; figure 2 is a section aa in figure 1; figure 3 - device, the phase of the start of unloading; on fig .4 - the same, longitudinal section, the average phase of unloading; figure 5 the same, a longitudinal section, the final phase of the discharge; Fig. 6 is a longitudinal sectional view after the end of unloading. Bulk dosing device

The components of the glass charge contain a suspension bunker 1, a weight batcher. 2 without a weighing system, a loading valve 3 without a drive, a relief valve 4 without a drive, a vertical partition 5, diaphragm 6 with a hole 8 for precise discharge. The device also contains an assembly line 9.

The device operates as follows. .

5 It is known that dosing accuracy depends on the capacity of the feeder and the height of the column of falling material. Therefore, the apparatus uses a variable packaging weighing method. This method consists in the fact that after weighed material into the weighing batcher 2 determines -. with a weighing error, and when unloading, the following remains in the weight doser: the amount of material equal to the loading error. When unloading material from the weight batcher 2, the height of the column of the falling Material is zero, since the unloading valve 4 enters the weight of the batcher. With this dosing method,

0 the ability to make a hitch only in rough mode, which increases productivity by 20-30%,

At the command of the control system (not shown) loading valve 3

5 is opened and the material from the overhang hopper 1 enters the weighing batcher 2. After filling it to a predetermined dose by the command of the control system (not shown in the drawings), the loading valve 3 closes.

0 dispenser 2 in this state is shown in Fig. 1. In this case, an overweight of the material in the weight dispenser 2 is possible in comparison with a given dose.

The process of unloading material from the 5th weighing batcher 2 to the assembly conveyor 9 begins with the command of the control system (not shown in the drawings) to open the unloading valve 4. The dosed material begins to be unloaded through both

0 calibrated apertures 7 and 8 of the diaphragm b. The diameter of the hole 7 is selected depending on the properties of the material and the requirements of 4I performance and metering accuracy. Usually this size is larger than the size

5 holes 8 2-5 times.

In the process of unloading the weighing batcher 2, the level of material in it reaches the upper edge of the vertical partition 5. In this case, the height of the partition 5. installed, for example, in the center of the outlet neck of the dispenser 2 is of utmost importance. When the material reaches the upper edge of the partition 5, two volumes of material are actually cut off separated by this partition. It is characteristic that from now on, when both openings 7 and 8 work, unloading will already have different effects on the remaining volumes. If the volume placed above the opening 7 decreases rapidly, the second volume will decrease much less rapidly. At a certain moment, due to the higher rate of discharge of the volume above the opening 7, the outflow of material from it stops, while the material is still stored in the volume above the opening 8. In connection with this, a necessary condition for ensuring high reliability and metering accuracy is the requirement to place at least 10-15% of the total volume of the dosed material in the volume above the JB opening. This means that this device allows 90-95% of the material to be dosed at an increased speed, and 5-10 at a reduced speed.

Thus, with equal volumes of material to the right and left of the partition 5, the material is discharged 2-5 times faster through the opening 7. At its end, the unloading of the volume above the opening 8 continues, but already at a reduced speed. It is very important and decisive that in this case the transition from unloading at high speed to unloading at reduced speed

carried out without any actuator and, accordingly, control action. It is carried out by itself, which determines its highest

reliability..

At the end of the metered delivery of material to the conveyor 8, the control system (not shown in the drawings) gives a command to close the discharge valve 4. Valve 4 closes, and the metered delivery of material is stopped. A certain dose of material remains in dispenser 2, which in this case is a variable container, i.e.

correction for the next backfill of dispenser 2.,

Formula of the invention Device for dispensing bulk

components of the glass charge, comprising an ad-weight hopper with a loading valve, a weight batcher with an unloading valve and an assembly conveyor, which, in order to increase

the reliability of the transition from one unloading speed to another, the weight batcher is made in the lower part with a diaphragm and a vertical partition of its cavity located mutually perpendicularly, while the diaphragm is made with at least two holes located on both sides of the partition and designed for coarse and accurate unloading. ....

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