WO2020146930A1

WO2020146930A1 - Automatic control system for a gravity separator

Info

Publication number: WO2020146930A1
Application number: PCT/BR2019/050015
Authority: WO
Inventors: Julio Carlos Benjamin BAUMGARTEN
Original assignee: Baumgarten Julio Carlos Benjamin
Priority date: 2019-01-17
Filing date: 2019-01-17
Publication date: 2020-07-23
Also published as: BR112021009517A2

Abstract

The gravity separator controlled by an automatic actuation system that is the subject matter of the present invention comprises an apparatus provided with a set of electrical components managed by a microprocessor system that makes it possible to adjust the parameters automatically, without physical intervention by an operator. This makes it possible for the apparatus to be completely sealed and safe during operation, and for it to operate autonomously, in order that the different settings and patterns are implemented such that the read data provides the ideal settings for the separator so that the separation is as efficient as possible in obtaining the required end product. The apparatus (40) enables the automation of any model of gravity separator, as it makes it easy to fit and install on the discharge point of the separators.

Description

AUTOMATIC TABLE CONTROL SYSTEM

FIELD OF THE INVENTION

[01] The present invention describes a densimetric table controlled by an automatic drive system. More specifically, it comprises equipment equipped with a set of electrical components managed by a microprocessed system that makes it possible to adjust the parameters automatically, without physical interference from an operator. Allowing the equipment to be completely closed, safe in its operation and to perform its operation autonomously.

[02] This constructivity allows the electronic processing system to read all values, sensors, weights, densities and other parameters that are necessary. With this, the electronic system will control the machine at different slopes, table vibration, air flow from the suspension bed and adjustment of the product diverters according to its density.

[03] Therefore, different adjustments and patterns will be performed so that the data read provides the ideal adjustments for the table so that the separation is as efficient as possible in obtaining the required final product.

BACKGROUND OF THE INVENTION

[04] A densimetric table separates grains according to their specific weight or density. Heavier grains come out of the separation screen on one side and grains with lower density come out proportionally from the opposite side, with heavier grains at one end of the screen and lighter grains at the opposite end. [05] However, in order for these devices to perform a better separation, several adjustments are made, such as: tilting the screen, changing the frequency of vibration and positioning the product diverters for the different outputs. However, all these adjustments are performed manually by an operator, which ends up generating interference in the separation system in order to impair the efficiency of the final product.

[06] In research carried out with the state of the art, we verified several documents that mention improvements applied to densimetric tables, where we can highlight the following documents:

[07] The document BR202017003131-0 describes a densimetric table of the type classifier of seeds, such as, of soy, wheat, rice, beans, corn, among others classified by specific weight through vibrating mesh; said densimetric table that is idealized for the separation of 200 bags of 60 kg per hour and is activated and regulated through an electronic control panel made of metal plate with activation buttons for the operation and adjustment of the table, this adjustment is carried out by means of the activation of eccentric shafts, motors, axial fan, among other devices that provide automatic adjustment of the table; said table which is formed by a structural box made of sheet steel configured to withstand vibration.

[08] This document identified in the state of the art describes a constructivity applied in a densimetric table that features a drive system through a control panel. However, the constructivity described in this equipment does not allow the control of all parameters of the machine, so that the physical interference of an operator is still necessary. [09] Document PI8601499-4 describes a densimetric table made up of a chamber where air is determined which determines the formation of a fluidized bed over a vibrating sieve fed in its lower part by product to be processed and which, according to its weight, is successively classified and routed to corresponding outlet valves.

[010] This document identified in the state of the art describes a constructivity applied in a densimetric table that presents a system of adjustment of parameters entirely manual, so that the constructivity mentioned in this document requires an operator to constantly perform physical interference with the equipment.

[011] Therefore, the present holder has developed equipment that features an electronic processing system that performs the reading of all necessary parameters, allowing greater autonomy and control of the different inclinations, table vibration, air flow from the suspension bed and adjustment of product diverters according to their density.

[012] Thus, the object of the present invention is a densimetric table controlled by an automatic drive system that comprises equipment equipped with a set of electrical components managed by a microprocessed system that makes it possible to adjust the parameters automatically, without physical interference from an operator. . Allowing the equipment to be completely closed, safe in its operation and to perform its operation autonomously, so that the different adjustments and standards will be performed so that the data read provide the ideal settings for the table so that the separation is as efficient as possible in obtaining the required final product.

SUMMARY OF THE INVENTION

[013] A characteristic of the present invention is a densimetric table controlled by an automatic drive system that provides a structure that receives a set of positioners arranged near the ends in order to adjust the correct angle of inclination of the structure.

[014] It is characteristic of the present invention a densimetric table controlled by an automatic drive system that provides positioners equipped with electric motors that are managed by a microprocessor controlled.

[015] The characteristic of the present invention is a densimetric table controlled by an automatic drive system that provides a pair of vibrating tables driven by an electric motor managed by microprocessed control, which allows modifying the vibration of the tables according to the variation of the frequency of the motor supply network.

[016] A characteristic feature of the present invention is a densimetric table controlled by an automatic drive system that provides equipment that will measure the density of the grains leaving the table, along its entire length, while recording different densities in a database. microprocessed system data.

[017] A characteristic of the present invention is a densimetric table controlled by an automatic actuation system that provides a vat that performs controlled lateral movements, being provided with a tilting lid that allows closing and a tilting base that allows the release of grains after measurement.

[018] The characteristic of the present invention is a densimetric table controlled by an automatic actuation system that provides a vat that is a small dual-function scale, at the same time being a batch scale, with a known volume and also a scale that measures by passing in depending on the chosen function.

[019] The characteristic of the present invention is a densimetric table controlled by an automatic drive system that provides a software management system installed in the electronic processing system that will read all values, sensors, weights, densities and other parameters that are needed.

[020] It is characteristic of the present invention a densimetric table controlled by an automatic drive system that provides a control interface for an interaction of what is desired from the machine with the operator or an automation control system.

BRIEF DESCRIPTION OF THE FIGURES

[021] Figure 1 shows the perspective view of the densimetric table.

[022] Figure 2 shows the perspective view of the densimetric table, detailing the density measurement equipment.

[023] Figure 3 shows the side view of the densimetric table, detailing the internal components and figure 3A shows the details of the positioners and drive motor. [024] Figures 4 and 4A show the side views of the densimetric table, detailing the activation of the density measurement equipment.

DESCRIPTION OF THE INVENTION

[025] The densimetric table controlled by an automatic drive system, object of the present invention, comprises equipment provided with a base (10) that supports a structure (20) provided with a pair of vibrating tables (21) and (22), said structure (10) which receives a set of positioners (11) arranged close to the ends in order to adjust the correct angle of inclination of the structure (20), said positioners (11) are provided by electric motors (30) which are managed by a microprocessor control, as shown in detail in figure 3A.

[026] The pair of vibrating tables (21) and (22) arranged next to the structure (20) are driven by an electric motor (30) managed by the microprocessed control, which allows modifying the vibration of the tables according to the frequency variation of the motor supply network (30).

[027] The structure (20) is equipped with an exhaust point (26) to which a fan is connected, which forces the air to pass through the bottom of the table screen, so that lighter products move in the opposite direction to the smaller grains. light. Higher or lower air flow rates are required for more efficient separation, according to different types of grains and densities.

[028] The densimetric table can have two types of creation of an air flow to suspend the grains, which are: a) fans with variable speed supplying air from bottom to top in the vibrating screen. b) hoods with variable speed drawing air through the vibrating screen.

[029] Therefore, it can be done in two ways: use an individual exhaust fan with variable speed. Or use a common exhaust network with an electric damper to adjust the exhaust.

[030] The structure (20) is provided with a feeding and distribution point (23) of the product to be separated on the table, said feeding point (23) which is provided by a regulating gate (24) which is moved laterally by an electric motor (241), controlling the amount of product that will be made available on the table for processing.

[031] In the internal portion of the structure (20), below the feeding point (23), a vibrating chute (25) is arranged that distributes the grains throughout the head of the equipment, making the product uniformly fed.

[032] On the grain exit side of the structure (20), after the fall of the separated product, we will have an equipment (40) that will measure the density of the grains that leave the table, along its entire length, while records different densities in a microprocessed system database.

[033] The density is obtained by reading the weight of the product loaded in a vat (41) with known volume, known vat (41) that performs controlled lateral movements, in addition, it has a tilting lid (41 1) that allows the closing and a tilting base (412) that allows the release of the grains after the measurement.

[034] The vat (41) is a small double-function scale, at the same time being a batch scale, with a known volume and also a scale that measures by moving passage, depending on the chosen function.

[035] The batch scale mode will weigh 14 different points throughout the product drop. For this to happen, a stepper motor (42) is activated by positioning the bowl (41) at each point. Once the bowl (41) is positioned, with the lower gate (412) closed, it allows the product to enter until the known volume is filled, so that after filling the gate (41 1) it is closed.

[036] Thus, the weight found in the known volume will be used to calculate the specific weight of the grains. Soon afterwards both gates are opened and in continuous flow measurement mode it will measure the flow in kg / h. These tasks will be repeated at the 14 points along the product discharge and the values obtained will compose a characteristic density and flow map.

[037] Several times this tank (41) will be filled with the product that leaves the table (20), its value will be registered and discharged for new measurement at a point immediately near and to the side.

[038] After a density map has been made along the vibrating screen the density measuring device will change, opening its discharge gate (412) and will remain so to be able to measure the product flow in kg / minute along from the same screen.

[039] The flow measurement function of the bowl (41) is performed through its lateral movement, since the bowl (41) is supported on linear guides (43) that allow only lateral movement. When moving, this is done by a spindle (44) connected to a stepper motor (42). The spindle (44) transforms the rotational movement of the motor into linear motion, said motor (42) which is controlled by a controller logic of PLC processes, allowing the flow reading in kg / h to be positioned immediately next to the new measurement. Each value read will also be stored in a microprocessed system database for analysis and definition of the machine's adjustment parameters.

[040] On the product drop side of the densimetric table there will be a series of deviation fins (45) provided with an inclination, being placed below the bowl (41), thus directing the product to the discharge spout (46). Said fins (45) will receive the products separately and send to different carriers, according to the density.

[041] The bowl (41) is arranged together with a structure (47) that is equipped with a diverter (471) driven by pneumatic cylinders (472) that are driven by the microprocessed system, as defined by the software. This system is fixed to the same mobile assembly as the bowl (41) of the density and grain flow meter.

[042] The densimetric table is managed by software installed in the electronic processing system that will read all values, sensors, weights, densities and other parameters that are necessary.

[043] The process logic controller and other control equipment will be located in a metal frame (50) disposed next to the base (10), so that this arrangement avoids direct contact with the equipment, preventing damage by vibration that occur in the machine.

[044] There will be a control interface for an interaction of what is desired from the machine with the operator or an automation control system. The interface can be an HMI, Human Machine Interface, with a touch screen or even an application in a SmartPhone, according to the user's need for application and use.

[045] This interaction can be done via electronic protocol or through a human machine interface (HMI). The necessary parameters in the final product can be entered and the software will control the machine at different table inclinations, table vibration, air flow from the suspension bed and adjustment of the product diverters according to its density.

[046] Different standard adjustments will be performed so that the data read provides the ideal settings for the table and thus the separation is as efficient as possible in obtaining the required final product.

[047] The equipment (40) allows to automate any model of densimetric table, since it allows its easy adaptation and installation near the exit point of the tables. Thus, this constructivity allows the equipment to measure grain density efficiently and automatically.

[048] Thus, the object of the present invention is a densimetric table controlled by an automatic drive system that comprises equipment equipped with a set of electrical components managed by a microprocessed system that makes it possible to adjust the parameters automatically, without physical interference from an operator. . Allowing the equipment to be completely closed, safe in its operation and to perform its operation autonomously, so that the different adjustments and patterns will be performed so that the data read provides the ideal adjustments for the table so that the separation is as efficient as possible in obtaining the required final product.

Claims

1. DENSIMETRIC TABLE CONTROLLED BY AUTOMATIC DRIVING SYSTEM characterized by an equipment (40) being placed near the exit point of the structure (20) that will measure the density of the grains that leave the table, along its entire length, while recording different densities in a microprocessed system database, this density is obtained by reading the weight of the product loaded in a vat (41) with known volume, known vat (41) that performs controlled lateral movements, in addition, it presents a tilting lid (41 1) that allows closing and a tilting base (412) that allows the release of grains after measurement; the bowl (41) is a small dual-function scale, at the same time being a batch scale, with a known volume and also a scale that measures by moving passage, depending on the chosen function; the batch scale mode will weigh 14 different points throughout the entire product drop using a stepper motor (42) that is activated by positioning the bowl (41) at each point, once the bowl (41) is positioned , with the lower gate (412) closed, allows the entry of product until the known volume is filled, so that after filling the gate (411) it is closed; the weight found in the known volume will be used to calculate the specific weight of the grains and after both gates are opened and in the continuous flow measurement mode it will measure the flow in kg / h, these tasks will be repeated at 14 points along the discharge of product and the values obtained will compose a density map and characteristic flow; several times this bowl (41) will be filled with the product that leaves the table (20), where its value will be registered and discharged for new measurement at a point immediately near and to the side; the flow measurement function of the bowl (41) is performed through its lateral movement, since the bowl (41) is supported by linear guides (43) that allow only lateral movement, when the movement, it is made by a spindle (44) connected to a stepper motor (42), said spindle (44) that transforms the rotation movement of the motor into linear motion, said motor (42) which is controlled by a PLC process logic controller, allowing the realization of flow rate reading in kg / h and positioning immediately next to new measurement, where each value read will also be stored in a microprocessor system database for analysis and definition of the machine's adjustment parameters; on the product drop side of the densimetric table there will be a series of deviation fins (45) provided with inclination, being arranged below the bowl (41), thus directing the product to the discharge spout (46), said fins (45) they will receive the products separately and send to different carriers, according to density; the bowl (41) is arranged together with a structure (47) that is equipped with a diverter (471) driven by pneumatic cylinders (472) that are driven by the microprocessed system, as defined by the software, that system is fixed in the same mobile assembly as the bowl (41) of the density and grain flow meter; the equipment (40) allows to automate any densimetric table model, since allows its adaptation and installation near the exit point of the tables.

2. DENSIMETRIC TABLE CONTROLLED BY AUTOMATIC DRIVING SYSTEM, according to claim 1, characterized in that after the density map has been made along the vibrating screen, the density measuring device will change, opening its discharge gate ( 412) and will remain so to be able to measure the product flow in kg / minute across the same screen.

3. DENSIMETRIC TABLE CONTROLLED BY AUTOMATIC DRIVE SYSTEM, according to claim 1, characterized in that the equipment (40) and densimetric table will be managed by software installed in the electronic processing system that will read all values, sensors, weights, densities and other parameters that are necessary.

4. DENSIMETRIC TABLE CONTROLLED BY AUTOMATIC DRIVING SYSTEM, according to claim 1, characterized in that the process logic controller and other control equipment will be located in a metallic frame (50) arranged next to the base (10), so that this arrangement avoids direct contact with the equipment, preventing vibration damage that occurs on the machine.

5. DENSIMETRIC TABLE CONTROLLED BY AUTOMATIC DRIVING SYSTEM, according to claim 1, characterized by having a control interface for an interaction between what is desired from the machine with the operator or an automation control system, with the The interface can be an HMI, Human Machine Interface, with a touch screen or even an application on a SmartPhone, depending on the application and user needs.

6. DENSIMETRIC TABLE CONTROLLED BY AUTOMATIC DRIVE SYSTEM, according to claim 1, characterized in that the necessary parameters in the final product can be entered and the software will control the machine at different table inclinations, table vibration, air flow from the suspension bed and adjustment of the product diverters according to their density.

7. DENSIMETRIC TABLE comprising equipment equipped with a base (10) that supports a structure (20) provided with a pair of vibrating tables (21) and (22), said structure (20) which is provided with an exhaust point (26) where a fan is connected that forces the air to pass through the bottom of the table screen and the feeding point (23) where a vibrating chute (25) is arranged that distributes the grains across the head of the equipment, characterized by the structure (10) receives a set of positioners (11) arranged close to the ends in order to adjust the correct angle of inclination of the structure (20), said positioners (11) are provided by electric motors (30) which are managed by microprocessor control.

8. DENSIMETRIC TABLE CONTROLLED BY AUTOMATIC DRIVING SYSTEM, according to claim 7, characterized in that the electric motor (30) is managed by the microprocessed control, which allows modifying the form of table vibration according to the frequency variation of the motor supply network (30).

9. DENSIMETRIC TABLE CONTROLLED BY AUTOMATIC DRIVING SYSTEM, according to claim 7, characterized in that the structure (20) is provided with a feeding and distribution point (23) of the product to be separated on the table, said feeding point ( 23) that is equipped with a regulating gate (24) that is moved laterally by an electric motor (241), controlling the amount of product that will be available on the table for processing.