SU850217A1

SU850217A1 - Apparatus for controlling product feed condition in dry grinding mill

Info

Publication number: SU850217A1
Application number: SU792830781A
Authority: SU
Inventors: Юрий Владимирович Уманский; Александр Борисович Бреслер; Владимир Михайлович Безязыков; Юрий Николаевич Проняев; Григорий Семенович Выгонский
Original assignee: Государственный Всесоюзный Научно-Иссле-Довательский Институт Цементной Про-Мышленности
Priority date: 1979-10-19
Filing date: 1979-10-19
Publication date: 1981-07-30

Description

Изобретение относится к устройствам для автоматического управления режимом подачи продукта мельницы сухого помола, снабженной пневматическим насосом с двумя камерами, например, в сепаратор и может быть исполь- ⁵зовано в цементной промышленности, а также там, где требуется с помощью многокамерных пневмонасосов органи- . зовать непрерывную подачу продукта помола в какой-либо аппарат.The invention relates to devices for the automatic control mode feed mill product dry milling, air pump equipped with two cameras, such as a separator and can be ⁵ Call The use in the cement industry, and where required with a pneumatic pump via multi-organic. Require continuous supply of the grinding product to any apparatus.

Известно устройство для управления подачей продукта измельчения мельницы сухого помола, снабженной пневмонасосом с двумя камерами, в сепаратор, включающее датчик расхода пневмот'ранспортирующего воздуха и клапаны для изменения его расхода fl].A device is known for controlling the flow of a grinding mill product of a dry grinding mill equipped with a pneumatic pump with two chambers to a separator including a flow sensor for pneumatic conveying air and valves for changing its flow rate fl].

Недостатком этого устройства является невозможность обеспечения неп- jq рерывной выгрузки продукта помола из пневмонасоса.The disadvantage of this device is the impossibility of providing continuous jq unloading of the grinding product from the air pump.

Наиболее близким по технической сущности к предлагаемому является уст2 ройство для управления режимом подачи продукта измельчения мельницы сухого помола с пневматическим насосом ис двумя камерами в сепаратор, включающее два блока индикации опорожнения каждой камеры, вход которых соединен с выходами соответствующей камеры насоса, два клапана изменения расхода воздуха, выходы которых соединены со входами соответствующей камеры насоса, и два измерителя времени разгрузки камер, первый вход которых соединен с выходом соответствующего блока индикации опорожнения камер. Известное устройство представляет собой в целом информатор машиниста мельницы о ее текущей производительности и может быть использовано им при ручном управлении разгрузкой камер пневматического насоса f2].The closest in technical essence to the proposed one is a device for controlling the mode of feeding the product of grinding of a dry grinding mill with a pneumatic pump and two chambers into a separator, including two emptying indication blocks for each chamber, the input of which is connected to the outputs of the corresponding pump chamber, two valves for changing the air flow rate the outputs of which are connected to the inputs of the corresponding pump chamber, and two chambers of discharge time of the chambers, the first input of which is connected to the output of the corresponding unit Single display discharge chambers. The known device is, on the whole, the informant of the mill operator about its current productivity and can be used by him with manual control of the unloading of the chambers of the pneumatic pump f2].

Недостаток известного устройства невозможность обеспечения с его помощью непрерывной автоматической выгрузки продукта помола из пневмонасоса.A disadvantage of the known device is the inability to provide with it a continuous automatic unloading of the grinding product from the air pump.

85028502

Цель изобретения - обеспечение непрерывной автоматической подачи продукта помола в сепаратор.The purpose of the invention is the provision of continuous automatic feeding of the grinding product into the separator.

Указанная цепь достигается тем, что устройство для управления режимом ₅доДачи продукта измельчения мельницы сухого помола с пневматическим насосом и с двумя камерами в сепаратор, включающее два блока индикации опорожнения каждой камеры, вход 10 которых соединен с выходами соответствующей камеры насоса, два клапана изменения расхода воздуха, выходы которых соединены со входами соответствующей камеры насоса, и два из- и мерит.еля времени разгрузки камер, первый вход которых соединен с выходом соответствующего блока индикации опорожнения камеры, дополнительно снабжено блоком стабилизации давле- 20 ния воздуха, двумя регуляторами расхода пневмотранспортирующего воздуха, двумя узлами разрешения йзменедая расхода воздуха и двумя блоками реверса измерителей времени разгруз- 25 ки камеры, причем вход блока стабилизации давления воздуха соединен с источником воздуха, его выходы соединены с первыми входами клапанов изменения расхода воздуха, выходы 30 каждого измерителя времени разгрузки камеры соединены со входом регулятора расхода пневмотранспортирующего воздуха доугой камеры, а вторые входы измерителей времени разгрузки ка- 35 мер - с выходом соответствующих блоков реверса измерителей времени разгрузки камеры, вход каждого из которых соединен со вторым выходом соответствующего блока индикации опорож- 40 нения камеры,третий выход которых соединен ео вторым входом соответствующего клапана изменения расхода воздуха, а четвертый выход - с первым входом узла разрешения изменения ⁴⁵расхода воздуха другой камеры, выходы каждого регулятора расхода пневмотранспортирунщего воздуха соединены через вторые входа узла разрешения изменения расхода воздуха со вторы- 50 мн входами соответствующего клапана изменения расхода воздуха.This circuit is achieved by the fact that the device for controlling the mode _{5 of the} product of grinding the dry grinding mill with an air pump and with two chambers into a separator, including two indication units for emptying each chamber, the input 10 of which is connected to the outputs of the corresponding pump chamber, two valves for changing the air flow rate the outputs of which are connected to the inputs of the corresponding pump chamber, and two measuring and unloading time chambers, the first input of which is connected to the output of the corresponding emptying display unit the chamber is additionally equipped with an air pressure stabilization unit 20, two regulators of pneumatic conveying air flow, two resolution nodes changing the air flow and two reverse units of the chamber unloading time meters 25, and the input of the air pressure stabilization unit is connected to the air source, its outputs are connected with the first inputs of the valves for changing the air flow, the outputs 30 of each meter for unloading the chamber are connected to the input of the regulator of the flow of pneumatic conveying air arc cells, and the second inputs of the chamber unloading time meters with the output of the corresponding reverse units of the chamber unloading time meters, the input of each of which is connected to the second output of the corresponding chamber emptying indication unit, the third output of which is connected to the second input of the corresponding change valve air flow rate, and the fourth output - to the first input node ⁴⁵ changes resolution of air flow of another camera, the outputs of each pnevmotransportirunschego air flow regulator connected via a second input kt and permits air flow changes from 50 vtory- plural inputs corresponding valve changes in air flow.

На чертеже представлена блок-схема устройства.The drawing shows a block diagram of a device.

, - 55, - 55

Устройство содержит камеры 1 и 2 пневматического насоса, блоки 3 и 4 индикации опорожнения камеры пневмонасоса от продукта помола, попадаюThe device contains chambers 1 and 2 of the pneumatic pump, blocks 3 and 4 of indication for emptying the chamber of the pneumatic pump from the grinding product, I get

4 щего в нее из мельницы, например, в виде реле давления пневмотранспор тирующего воздуха, клапаны 5 и 6 изменения расхода воздуха,измерители 7 и 8 времени разгрузки соответствующей камеры, блок 9 стабилизации давления воздуха, регуляторы 10 и 11 расхода пневмотранспортирующего воздуха, узлы 12 и 13 разрешения изменения расхода воздуха, блоки 14 и 15 реверса блоков изменения времени разгрузки камеры.4 flowing into it from the mill, for example, in the form of a pressure switch for pneumatic conveying air, valves 5 and 6 for changing the air flow rate, meters 7 and 8 of the discharge time of the corresponding chamber, block 9 for stabilizing the air pressure, regulators 10 and 11 for pneumatic conveying air, units 12 and 13 permitting changes in air flow, blocks 14 and 15 of the reverse blocks changing the time of unloading the chamber.

Устройство работает следующим образом.The device operates as follows.

Пневмотранспортирующий воздух через блок стабилизации давления и клапаны изменения расхода воздуха может поступать в камеры I и 2 пневмонасосов и транспортировать, иэ них материал. Скорость опорожнения камер 1 и 2 зависит от расхода воздуха, поступающего в них, регулируемого клапанами 5 и 6 . Примем, например, что опорожняется камера 1, а камера 2, куда в это время воздух не поступает, наполняется продуктом помола из мельницы. После этого блок 3 индикации определяет момент полного опорожнения камеры I, например, по падению давления в магистрали пневмотранспортирующего воздуха и производит следующие операции: включает клапан 6, и воздух поступает на выгрузку камеры 2, останавливает измеритель времени разгрузки камеры 1. Этот измеритель устанавливает положение регулирующей части клапана 6 таким, чтобы оно было прямо пропорциональным времени разгрузки камеры 1. Это. осуществляется через регулятор 11, узел 13 разрешения изменения расхода воздуха и, наконец, клапан 6. Одновременно блок 3 индикации запрещает регулятору 11 изменять положение клапанов 6 ' посредством узла 13, хотя измеритель 7 в это время реверсируется иа нулевое положение.Pneumatic conveying air through the pressure stabilization unit and valves for changing the air flow rate can enter the chambers I and 2 of the air pumps and transport their material. The rate of emptying of chambers 1 and 2 depends on the flow rate of air entering them, regulated by valves 5 and 6. Take, for example, that chamber 1 is emptied, and chamber 2, where no air enters at that time, is filled with the grinding product from the mill. After that, the display unit 3 determines the moment of complete emptying of the chamber I, for example, by the pressure drop in the pneumatic conveying air line and performs the following operations: turns on the valve 6, and air enters the unloading of the chamber 2, stops the unloading time meter of the chamber 1. This meter sets the position of the regulating parts of the valve 6 so that it is directly proportional to the unloading time of the chamber 1. This. is carried out through the regulator 11, the air flow change resolution unit 13 and, finally, the valve 6. At the same time, the indicating unit 3 forbids the regulator 11 to change the position of the valves 6 'by means of the unit 13, although the meter 7 is reversed at this time.

В зависимости от изменения производительности мельницы наполнение камер 1 и 2 все время разное, но устройство позволяет следить за этим изменением загрузки камер и изменяет положение клапанов 5 и 6 расхода воздуха прямо пропорционально времени разгрузки предыдущей камеры, т.е. чем дольше разгружается камера I, тем больше открывается клапан 6 и наоборот. В данном случае при биорожненииDepending on the change in mill productivity, the filling of chambers 1 and 2 is different all the time, but the device allows you to monitor this change in chamber loading and changes the position of the air flow valves 5 and 6 in direct proportion to the unloading time of the previous chamber, i.e. the longer chamber I is unloaded, the more valve 6 opens and vice versa. In this case, with bio-emptying

85021 камеры установлено положение клапана 6 прямо пропорциональным времени раз< грузки этой камеры,и затем камера 2 разгружается этим расходом воздуха. Теперь срабатывает блок 4 и проиэво- _$дит аналогичные операции.85021 of the chamber, the position of the valve 6 is set directly proportional to the time of the load of this chamber, and then the chamber 2 is unloaded by this air flow rate. Now triggered unit 4 and _$ proievo- dit similar operations.

Claims

(54) DEVICE FOR CONTROLLING THE MODE OF FEEDING MILLING PRODUCT The invention relates to devices for automatically controlling the feeding mode of a dry grinding mill equipped with a pneumatic pump with two chambers, for example, a separator and can be used in the cement industry, as well as where It is required with the help of multi-chamber pneumatic pumps to organize a continuous supply of grinding product to any apparatus. A device is known for controlling the supply of grinding product with chalk and lean grinding, equipped with a pneumatic pump with two chambers, into a separator, which includes a pneumatic conveying air flow sensor and valves for changing its consumption. 1 The disadvantage of this device is the impossibility of ensuring continuous discharging of the grinding product from a pneumatic pump. The closest in technical essence to the proposed invention is the DRY PREPARATION interface for controlling the supply of the grinding product of a dry grinding mill with a pneumatic pump and two chambers to the separator, which includes two indication units for emptying the chamber, whose input is connected to the outputs of the corresponding pump chamber, two valves changes in air flow, the outlets of which are connected to the inputs of the corresponding chamber of the pump, and two time meters for unloading the chambers, the first input of which is connected to the output of the corresponding unit for indication of chamber emptying. The known device is generally informing the driver of the mill about its current performance and can be used by him to manually control the unloading of the chambers of the pneumatic pump. The disadvantage of the known device is the impossibility of providing with it continuous automatic unloading of the grinding product from the pump stump. 3 The purpose of the invention is to provide, without break, an automatic feed of the ground grinding to the separator. This goal is achieved by the fact that the device controls the mode of supplying the grinding product of a dry grinding mill with a pneumatic pump and two chambers to a separator, including two indication units for emptying each, chambers whose input is connected to the outputs of the corresponding pump chamber, two valves for changing air flow, outputs that connect 1 to the inputs of the corresponding pump chamber, and two measures the time of unloading the chambers, the first input of which is connected to the output of the corresponding evacuation indication unit to Cameras are additionally equipped with an air pressure stabilization unit, two pneumatic conveying air flow controllers, two nodes allowing air flow rate variation and two reversing units of the chamber unloading time meter, the inlet of the air pressure stabilizer unit connected to the air source, and valve outlets changes in air flow, the outputs of the meter cage, the discharge time of the chamber is connected to the inlet of the flow regulator of the pneumotransmitting air of the other chamber, and All the inputs of the camera unloading time meter - with the output of the corresponding block of the camera unloading time meter, the input of each of which is connected to the second output of the corresponding display unit empty, the third output of which is connected to the valve of the air flow change, and a quarter} output - with the first inlet of the node of the discharge of the change in the air flow rate of the chamber, the outlets of each control of the flow rate of the pneumatic conveying air connection {a4) the inputs of the assembly permit the change of the flow and the air valve corresponding to the second inputs of varying air flow. The diagram shows the block diagrams of the device. The device comprises chambers I and 2 of the pneumatic pump, blocks 3 and 4 of the indication of the emptying of the pneumopump chamber from the Grinding Product, which enters it from the mill, for example, as a pneumatic conveying air pressure switch, valves 5 and 6, changes in air flow, meters 7 and 8 unloading time of the corresponding chamber, air pressure stabilization unit 9, pneumatic conveying air flow regulators 10 and 11, resolution 12 and 13 units for changing air flow rate, reversing units 14 and 15 of changing the chamber unloading time. The device works as follows. Pneumotransporting air through the pressure stabilization unit and the air flow rate change valves can enter the chambers 1 and 2 of the pneumatic pumps and transport the material from them. The emptying rate of chambers 1 and 2 depends on the air flow entering ifflx regulated by valves 5 and 6. For example, we assume that chamber I is empty and chamber 2, where no air enters at that time, is filled with grinding product from a mill. After that, the display unit 3 detects the moment of complete emptying of the chamber, for example, by the pressure drop in the pneumatic conveying air line and performs the following operation: turns on valve 6, and the air enters the chamber 2 unloading, stops the unloading time meter 1. This meter measures the position of the regulator parts of valve 6 so that it is directly proportional to the unloading time of chamber 1. This. through the regulator, node 3 allowing air flow change and finally valve 6. At the same time, unit 3 searches 1 and forbids controller i i to change the position of claps 6 through node 3, although meter 7 is reversed to zero position at this time. Depending on the change in the mill productivity, the filling of chambers 1 n 2 is different all the time, but the device allows you to monitor this change in the chambers load and changes the position of the air flow valves 5 and 6 directly proportional to the unloading time of the previous chamber, i.e. the longer chamber i is unloaded, the more valve 6 opens and vice versa. In this case, when the chamber is emptied 58, the position of the valve 6 is set directly proportional to the load time of this chamber and then the chamber 2 is discharged by this air flow. Now block A is triggered and produces similar operations. The invention The device for controlling the mode of supplying the product of grinding a dry grinding mill with a pneumatic pump and two chambers into a separator includes two blocks of indancale emptying with a food chamber, whose inlet is connected to the outlet of the corresponding chamber of the pump, two valves of air flow change, the outlets of which are connected to the inlets corresponding pump chamber, and two unloading time meters for chambers, the first input of which is connected to the first output of the corresponding chamber emptying indication unit, exc In order to ensure the continuous automatic supply of grinding product to the separator, the device is additionally equipped with an air pressure test unit, two pneumatic conveying air flow controllers, two air flow rate change resolution units and two reversing units for chamber unload time meters, and the unit input air pressure stabilization is connected to an air source, and its outlets are connected to the first inlets of the air flow rate change valves, the outputs of each meter The unloading chamber is connected to the inlet of the flow regulator of the pneumatic conveying air of the other chamber, and the second inputs of the chamber unloading time meters are connected to the output of the corresponding reversing units of the chamber unloading time meters, the input of each of which is connected to the second output of the corresponding camera display indication unit, the third output of which connected to the second inlet of the corresponding valve to change the air flow, and the fourth outlet to the first inlet of the node allowing air flow to change other air ry, the outputs of each regulator pnevmog carrier air flow rate of the torus are connected via the second inputs of the air flow changes authorization node to the second inputs of the corresponding air flow valve changes. Sources of information taken into account in the examination 1.ABTqpcKoe certificate of the USSR In 451464, cl. B 02 C 25/90, 1973.

2. USSR author's certificate number 514630, cl. B 02 C 25/00, 1975.