CN215974033U

CN215974033U - Magnesium oxide powder quantitative conveying and feeding device

Info

Publication number: CN215974033U
Application number: CN202122544979.7U
Authority: CN
Inventors: 刘宝廷; 邓守丽; 王金龙; 矫峰; 丁宏伟
Original assignee: Shenyang Create Unite Industrial Technology Co ltd
Current assignee: Shenyang Create Unite Industrial Technology Co ltd
Priority date: 2021-10-22
Filing date: 2021-10-22
Publication date: 2022-03-08
Anticipated expiration: 2031-10-22

Abstract

The utility model discloses a conveying and feeding device, and particularly relates to a quantitative conveying and feeding device for magnesium oxide powder. The structure is as follows: the upper portion of storage storehouse is equipped with the charge level indicator, the lower part of storage storehouse is equipped with down the charge level indicator, the output and the control system of charge level indicator and unloading charge level indicator are connected, control system and ground feeding system are connected, conical bottom discharge gate department in storage storehouse installs a discharge gate valve and rotary valve, the discharge gate of rotary valve and the entry linkage of rectilinear vibrating screen, the material export and the solid of rectilinear vibrating screen dash the board flowmeter and be connected, its controller is connected with control system, the solid dashes the board flowmeter discharge gate and is connected rather than the pan feeding mouth of the tubular vibrating feeder that the below set up, the tubular vibrating feeder discharge gate is connected rather than the thick liquid agitator tank that makes that the below set up. The utility model has the characteristics of accurate feeding amount, controllable feeding speed and prevention of magnesium oxide powder from accumulating at the bottom of the storage bin.

Description

Magnesium oxide powder quantitative conveying and feeding device

Technical Field

The utility model relates to a conveying and feeding device, in particular to a magnesium oxide powder quantitative feeding device, and belongs to the field of wet-process copper smelting and cobalt deposition recovery.

Background

The cobalt metal in the solution is recovered in the copper hydrometallurgy process, and the magnesium oxide slurry is added to produce the cobalt hydroxide product. In large-scale copper hydrometallurgy plants, large quantities of industrial magnesium oxide powder are consumed to maintain large-scale continuous production of cobalt hydroxide. Maintaining the correct concentration of the magnesium oxide slurry is very important for ensuring the quality of products produced by cobalt precipitation, and the over-low or over-high concentration of the magnesium oxide slurry can cause the over-low recovery rate of cobalt or the over-high magnesium content of finished cobalt hydroxide. In the process of pulping magnesium oxide in industrial production, the requirement of rapid mass delivery of magnesium oxide powder is met, the use amount of magnesium oxide is flexibly controlled in the pulping process to produce magnesium oxide slurry with proper concentration, and how to realize quantitative delivery and feeding of magnesium oxide powder is an engineering problem to be solved.

The existing magnesium oxide conveying and feeding system is simple in structure, has the problems that powder is easy to accumulate at the bottom of a storage bin, the powder flow can not be accurately measured, and the powder feeding speed can not be flexibly adjusted. The compressed air nozzle is additionally arranged, the structure of the existing magnesium oxide feeding device is improved, and smooth blanking and conveying of magnesium oxide powder can be realized. According to the utility model, the solid punching flowmeter and the rotary valve are additionally arranged in the structure of the powder conveying and feeding device, so that the accurate measurement of the quantity of the fed powder is realized, the adjustment and the controllability of the feeding speed are realized, and the technical problems of the existing magnesium oxide conveying and feeding device are effectively solved.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a magnesium oxide powder quantitative conveying and feeding device which has the characteristics of accurate feeding amount, controllable feeding speed and prevention of magnesium oxide powder accumulation at the bottom of a storage bin.

In order to solve the technical problems, the utility model is realized by the following technical scheme:

a feeding device for quantitatively conveying magnesium oxide powder has the following structure: the upper portion of storage storehouse is equipped with the charge level indicator, the lower part of storage storehouse is equipped with down the charge level indicator, the output and the control system connection of charge level indicator and unloading charge level indicator, control system and ground feeding system are connected, conical bottom discharge gate department in storage storehouse installs a discharge gate valve and rotary valve, the slew velocity of rotary valve is controlled by converter driven motor, the discharge gate of rotary valve and the entry linkage of rectilinear vibrating screen, the material export of rectilinear vibrating screen is connected with solid dash board flowmeter, solid dash board flowmeter's controller and control system connection, solid dash board flowmeter discharge gate is connected rather than the pan feeding mouth of the tubular vibrating feeder that the below set up, tubular vibrating feeder discharge gate is connected rather than the slurrying agitator tank that the below set up.

Preferably, an electric gate valve is arranged on a pipeline between the discharge port of the tubular vibrating feeder and the feeding port of the slurry making stirring tank.

Preferably, be equipped with the inlet tube on the above-mentioned thick liquid agitator tank of making, make the thick liquid top centre and be equipped with the agitator, the agitator includes motor and stirring rod and paddle, and the stirring rod upper end is connected with motor and speed reducer, and the lower extreme stretches into perpendicularly and makes in the thick liquid agitator tank body, and the stirring rod lower extreme is connected with two sets of paddles.

Preferably, two sets of four compressed air nozzles are horizontally arranged at the lower part of the conical bin cylinder of the storage bin.

Preferably, the storage bin adopts a cylindrical upper part and conical lower part combined structure, the included angle of the cone is 30 degrees, and the tip end of the storage bin faces downwards.

Preferably, the storage bin is provided with a pulse filter cartridge dust collector at the upper end thereof.

Preferably, the linear vibration sieve is driven by a single motor, and the vibration frequency is constant.

Preferably, the solid impact flow meter is located below the outlet of the linear vibrating screen material.

Preferably, the tubular vibrating feeder is cylindrical with two closed ends and is transversely arranged.

Preferably, the material loading level indicator and the material unloading level indicator are capacitance type limit detection level indicators.

Due to the adoption of the technical scheme, the utility model has the following characteristics and beneficial technical effects:

1. the rotary valve under the storage bin is controlled by a motor driven by a frequency converter, so that the rotating speed can be adjusted, the blanking speed is further adjusted, and the discharging amount of the magnesium oxide powder is changed according to process change.

2. Two groups of four compressed air nozzles at the bottom of the conical bin barrel of the storage bin can inject compressed air into the bin at regular time during feeding work, so that magnesium oxide powder in the storage bin is blown, the flowability of the powder is enhanced, and the smooth falling of the powder is assisted. And compressed air can be injected to help blow and empty the magnesium oxide powder accumulated in the storage bin when the whole device is stopped for maintenance.

3. The upper part and the lower part of the storage bin are respectively provided with a capacitance type limit detection material level meter which can feed back a material level signal of the storage bin to a control system, and the system can start a feeding program and stop a discharging program according to a material level low signal; and stopping the feeding process and starting the blanking process according to the material level high signal.

4. The magnesium oxide fine particle powder passing through the linear vibrating screen uniformly passes through the solid impact plate flowmeter, a controller of the flowmeter can measure and display the instantaneous flow of the magnesium oxide powder, and the accumulated flow of the magnesium oxide powder passing through the flowmeter is calculated through integration. The controller is provided with 0-20mA analog quantity output, the accumulated flow is fed back to the control system, and the system controls the total blanking quantity according to the signal, so that the water quantity flowing into the slurry making stirring tank is controlled, and the aim of controlling the concentration of the magnesium oxide slurry is fulfilled.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

The list of reference numbers is as follows:

1. the device comprises a pulse filter cartridge deduster, 2, a storage bin, 3, a material loading level meter, 4, a compressed air nozzle, 5, a discharge gate valve, 6, a rotary valve, 7, a linear vibrating screen, 8, a solid impact plate flowmeter, 9, a tubular vibrating feeder, 10, an electric gate valve, 11, a slurry making stirring tank and 12, a material unloading level meter.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in FIG. 1, a feeding device for quantitatively conveying magnesia powder has the following structure: the storage bin 2 adopts a cylindrical upper part and conical lower part combined structure, the included angle of the cone is 30 degrees, and the tip end of the storage bin faces downwards. The upper part of the storage bin 2 is provided with a capacitive limit detection feeding level indicator 3, the lower part of the storage bin 2 is provided with a capacitive limit detection discharging level indicator 12, the output ends of the feeding level indicator 3 and the discharging level indicator 12 are connected with a control system, the control system is connected with a ground feeding system, the control system and the ground feeding system are both in the prior art, magnesium oxide powder in the storage bin 2 is pneumatically blown from the ground feeding system, when the discharging level indicator 12 of the storage bin 2 detects that the material level is low, the control system commands the blower of the ground feeding system to start, the magnesium oxide powder is blown to the storage bin 2 from the ground until the feeding level indicator 3 of the storage bin 2 detects a signal, which indicates that the magnesium oxide powder in the storage bin is nearly full, and the control system immediately stops blowing the magnesium oxide powder of the ground station. The pulse filter drum dust remover 1 is installed at the upper end of the storage bin 2, when magnesium oxide powder is blown to the storage bin 2 by a ground station, a large amount of dust can be carried in discharged air, at the moment, the pulse filter drum dust remover 1 installed at the top of the storage bin starts to work synchronously, magnesium oxide dust is filtered, and clean air is discharged into the air. The discharge gate valve 5 and the rotary valve 6 of unloading are installed to the conical bottom discharge gate department in storage storehouse 2, can temporarily close when unloading or overhaul, and the unloading is opened after perhaps overhauing and finishing. After the storage bin is full, open discharge gate valve 5 and rotary valve 6, the slew velocity of rotary valve 6 is controlled by converter driven motor, can increase or reduce the unloading volume according to the technology demand, and the discharge gate of rotary valve 6 passes through flexible hose and linear vibration sieve 7's entry linkage, and linear vibration sieve 7 is driven by a motor, and vibration frequency is fixed unchangeable. The material outlet of the linear vibrating screen 7 is connected with the inlet of the solid impact plate flowmeter 8 through a connecting pipe, and undersize magnesium oxide fine particle powder flows into the solid impact plate flowmeter 8 through the material outlet and the connecting pipe.

As shown in figure 1, two groups of four compressed air nozzles 4 are horizontally arranged at the lower part of a conical bin cylinder of a storage bin 2, when the storage bin normally works and is used for blanking, the compressed air nozzles 4 regularly spray air into the bin to blow magnesium oxide powder in the storage bin, so that the powder flowability is enhanced, and the smooth falling of the powder is assisted. When the device is not started for a long time or needs to be overhauled, compressed air can be manually controlled to spray, so that the blowing and the emptying of the magnesium oxide powder accumulated in the storage bin 2 are facilitated.

As shown in figure 1, the solid impact plate flowmeter 8 is positioned below the outlet of the linear vibrating screen 7, the flowmeter 8 is provided with a controller, the controller of the solid impact plate flowmeter 8 is connected with a control system, the total amount of solids flowing through the flowmeter can be accumulated, the controller of the solid impact plate flowmeter 8 can output 0-20mA signals to the control system, and the control system controls the blanking amount according to the accumulated flow data fed back by the flowmeter 8. The discharge port of the solid punching plate flowmeter 8 is connected with a feeding port of a tubular vibrating feeder 9 arranged below the solid punching plate flowmeter through a flexible connecting pipe, and the tubular vibrating feeder 9 is cylindrical with two closed ends and is transversely arranged. The discharge port of the tubular vibrating feeder 9 is connected with an electric gate valve 10 through a section of flexible hose, and a pipeline below the electric gate valve 10 extends into a magnesium oxide slurrying stirring tank 11. The tubular vibrating feeder 9 can uniformly feed the magnesia powder into the magnesia slurrying agitator tank 11 below. The electric gate valve 10 can cut off the transfer of the magnesium oxide powder to the slurrification stirring tank 11 at the time of system maintenance.

As shown in figure 1, a water inlet pipe is arranged on a magnesium oxide slurrying stirring tank 11, and water is firstly quantitatively input into the slurrying stirring tank 11. The middle of the top of the slurry making stirring tank 11 is provided with a stirrer, the stirrer comprises a motor, a stirring rod and blades, the upper end of the stirring rod is connected with the motor and a speed reducer, the lower end of the stirring rod vertically extends into the slurry making stirring tank, and the lower end of the stirring rod is connected with two groups of blades, so that the suspension of magnesium oxide and water can be mixed more quickly and uniformly.

The ground station blows the magnesia powder to the storage bin 2, the storage bin 2 with the capacity of 8 tons can be filled in 40 minutes generally, the rotating valve 6 arranged at the outlet of the storage bin 2 can adjust the rotating speed, the blanking time needs about 30 minutes when the blanking amount is maximum, the maximum processing capacity of the linear vibrating screen 7 is 15 tons/hour, the undersize is magnesia fine particle powder, the undersize flows to the solid impact plate flowmeter 8 arranged at the outlet of the linear vibrating screen 7, the oversize is impurities, and the impurities are discharged to the impurity storage tank through the impurity outlet. After all the magnesium oxide powder in the storage bin 2 is completely discharged, the linear vibrating screen 7 continues to vibrate for 5 minutes, and the machine is stopped after the magnesium oxide powder is emptied.

The maximum designed treatment capacity of the solid impact plate flowmeter is 400 kg/min, and the treatment capacity can meet the requirement of blanking. The total blanking amount of the magnesium oxide powder is accumulated and calculated by a controller of the solid impact plate flowmeter and then is transmitted to a control system, and the control system can control the total blanking amount of the device.

The concentration of the required magnesium oxide suspension is generally 5% -10%, the device firstly inputs water into a pulping stirring tank quantitatively through the preset concentration calculation, then controls the magnesium oxide powder to be conveyed quantitatively to fall into the pulping stirring tank, and starts to stir fully to produce the magnesium oxide suspension with the set concentration. In the production process, if the concentration of the magnesium oxide suspension needs to be adjusted, the weight and the water quantity of the magnesium oxide input into the slurry making stirring tank can be adjusted by the control system so as to achieve the new concentration.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a magnesium oxide powder ration feeder which characterized in that structure as follows: the upper portion of storage storehouse is equipped with the charge level indicator, the lower part of storage storehouse is equipped with down the charge level indicator, the output and the control system of charge level indicator and lower charge level indicator are connected, control system and ground feeding system are connected, conical bottom discharge gate department in storage storehouse installs a discharge gate valve and rotary valve, the rotary valve is controlled by converter driven motor, the discharge gate of rotary valve and the entry linkage of rectilinear vibrating screen, the material outlet and the solid of rectilinear vibrating screen dash the board flowmeter and be connected, the controller and the control system of solid dash the board flowmeter are connected, the solid dashes the board flowmeter discharge gate and is connected rather than the pan feeding mouth of the tubular vibrating feeder that the below set up, the tubular vibrating feeder discharge gate is connected rather than the thick liquid agitator tank that makes that the below set up.

2. The magnesium oxide powder quantitative conveying and feeding device according to claim 1, wherein an electric gate valve is arranged on a pipeline between the discharge port of the tubular vibrating feeder and the feeding port of the slurry making stirring tank.

3. The feeding device for the quantitative delivery of the magnesium oxide powder according to claim 1, wherein the slurry making stirring tank is provided with a water inlet pipe, the top of the slurry making stirring tank is provided with a stirrer, the stirrer comprises a motor, a stirring rod and two groups of blades, the upper end of the stirring rod is connected with the motor and a speed reducer, the lower end of the stirring rod vertically extends into the slurry making stirring tank, and the lower end of the stirring rod is connected with two groups of blades.

4. The magnesium oxide powder quantitative conveying and feeding device according to claim 1, wherein two sets of four compressed air nozzles are horizontally arranged at the lower part of the conical bin of the storage bin.

5. The magnesium oxide powder quantitative conveying and feeding device according to claim 1 or 4, wherein the storage bin adopts an upper cylindrical lower conical combined structure, the included angle of the conical structure is 30 degrees, and the tip end of the storage bin faces downwards.

6. The magnesium oxide powder quantitative conveying and feeding device according to claim 1 or 4, wherein the upper end of the storage bin is provided with a pulse filter cartridge deduster.

7. A feeding device for the quantitative delivery of magnesium oxide powder according to claim 1, wherein said linear vibrating screen is driven by a motor, and the vibration frequency is constant.

8. A magnesium oxide powder dosing and feeding device as claimed in claim 1, wherein the solid impact flowmeter is located below the outlet of the linear vibrating screen material.

9. The magnesium oxide powder quantitative conveying and feeding device according to claim 1, wherein the tubular vibration feeder is cylindrical with two closed ends and is transversely arranged.

10. The magnesium oxide powder quantitative conveying and feeding device according to claim 1, wherein the feeding level indicator and the discharging level indicator are capacitance type limit detection level indicators.