SU907323A1

SU907323A1 - Pneumatic pulsator

Info

Publication number: SU907323A1
Application number: SU802940782A
Authority: SU
Inventors: Юрий Николаевич Пискунов
Original assignee: Предприятие П/Я Р-6273
Priority date: 1980-06-13
Filing date: 1980-06-13
Publication date: 1982-02-23

Description

(54) ПНЕВМАТИЧЕСКИЙ ПУЛЬСАТОР(54) PNEUMATIC PULSATOR

Изобретение относитс к устройствам, создающим пульсации жидкости или газа, касаетс пульсаторов с вращающимс распределительным элементом и может найти применение в системах с небольшим перепалом давлени на пульсаторе:The invention relates to devices that create pulsations of a liquid or a gas, relates to pulsators with a rotating distribution element and can be used in systems with a low pressure drop on a pulsator:

Известен пульсатор, содержащий корпус с входным и выходными патрубками, установленный в нем на приводном валу с возможностью вращени золотник, снабженный каналамн дл периодического соединени патрубков корпуса 1.A pulsator is known, comprising a housing with inlet and outlet nozzles, a spool rotatably mounted thereon on the drive shaft, which is provided with a channel for periodically connecting the nozzles of the housing 1.

Недостатками пульсатора вл ютс быстрый износ торцовых уплотнений на патрубках корпуса, вход щих в контакт с вращающимс золотником, отсутствие возможности регулировани скважности пульсаций и низка крутизна фронта импульса.The disadvantages of the pulsator are the rapid wear of the mechanical seals on the body nozzles that come into contact with the rotating spool, the inability to control the pulsation duty cycle and the low steepness of the pulse front.

Цель изобретени - увеличение надежности и долговечности уплотнений И регулирование скважности пульсаций.The purpose of the invention is to increase the reliability and durability of seals And the regulation of the pulse ratio of pulsations.

Это достигаетс тем, что золотник выполнен в виде полого цилиндра, разделенною на лзе полости трем последовательно усгановленными перегородками, укрепленными на: прнво1щом валу, причем цилн щрнческа стенка каждой полостн выполнена незамкнутой с образованием пр моугольного отверсти , а входной и выходной патрубки корпуса расположены по разные стороны средней перегородки золотника.This is achieved by the fact that the spool is made in the form of a hollow cylinder, divided into a cavity by three successively mounted partitions fixed to: a shaft, and the cylindrical wall of each cavity is open to form a rectangular opening, and the inlet and outlet of the housing are located along different side of the middle bulkhead spool.

При этом цилиндрические стенки золотника выполнены из эластичного листового мате10 риала, закрепленного по наружной поверхности жесткими пластинами к крайней и средней перегородкам золотника так, что в промежутках между соседними пластинами, равных удвоенной толщине эластичного материа15 ла, последний выступает над пластинами по образующей цилиндра на высоту, не менее удвоенной толщины зластичного материала.At the same time, the cylindrical walls of the spool are made of elastic sheet material, fixed on the outer surface with rigid plates to the extreme and middle partitions of the spool so that in the intervals between adjacent plates equal to twice the thickness of the elastic material, the latter protrudes above the plates along the cylinder to the height not less than twice the thickness of the elastic material.

Кроме того, жесткие пластины выполнены In addition, rigid plates are made

Claims

20 are removable with the possibility of fixing them on the psregoro: ah of the neighboring cavity to change the ratio of the flanks of the cylindrical walls. 39 In order to increase the steepness of the pulse front, the holes in the nozzles in the housing are rectangular in shape. Ma FIG. shows a pneumatic pul sator with attached equipment; in fig. 2 pulsator, longitudinal section; in fig. 3 is a section A-A in FIG.

2. Pulsator I (Fig. 1) includes a housing 2 (Figs. 2 and 3) with inlet 3 and outlet 4 and 5 nozzles. In housing 1 on the drive shaft 6, the spool 7 is rotatably mounted, which has three successively installed 8-O partitions fixed on the shaft 6. The partitions 8-10 sealed relative to the housing 1 divide the gold 7 into two cavities 11 and 12. The cylindrical walls of each cavity are made of elastic sheet material 13, for example, rubber or fluoroplastic, fixed on the outer surface by rigid ones. with plastics 14 to middle 9 and extreme 8 and 10 partitions so that between the adjacent plates 14 (Fig. 3), equal to twice the thickness of the elastic material 13, this elastic hfaTepaan protrudes above the plates 14 along the generatrix of the cylinder by a height not less than twice thickness of elastic material 13. As a result, multiple sealing of cavities 11 and 12 is carried out along the generatrix of the cylindrical surface. The cylindrical walls of each cavity are made open with the formation of rectangular holes. The holes of the cavities are oppositely displaced relative to each other. The rigid plates 14 are removable and can be rearranged from the wall of one cavity to another, followed by fixing, resulting in a change in the ratio of the surfaces of the cylindrical walls of the cavities 11 and 12. The inlet 3 connected to the HHQQM gas source and the outlet 4 communicating the cavity 12 with the atmosphere or a vacuum pump, are located on opposite sides of the middle partition 9 of the spool 7. The outlet nozzle 5, connected through the collector 15 and straight holes 16 and 17 in the housing 2 with cavities 11 and 12, is connected to lu gas pulsations. The rotation of the spool 7 of the pulsator 1 is carried out from an electric drive with a variator 18 connected to the shaft 6. The pulsator operates as follows. When the spool 7 is rotated, the cylindrical wall of the cavity 11 alternately opens and closes the opening of the inlet 3 and the opening 16 in the housing 2, and there is a periodic communication of the gas source to the consumer through the nozzle 3, cavity 11, rectangular opening 16, the collector 15 and the outlet 5 The cylindrical wall of the cavity 12 of the spool opens and closes the opening 17 and the pipe 4 in antiphase. As a result, after the gas is supplied to the consumer through the cavity 11, the gas is discharged through pipe 5, the collector 15, hole 17, the cavity 12 and the pipe 4 into the atmosphere. Thus, as the spool 7 rotates in the nozzle 5, the pressure changes. The pulsation mode is set by selecting the frequency of rotation of the output shaft of the motor with a variator 18 and the surface ratio TeiT of cylindrical cavities 11 and 12 by changing the number of rigid plates 14. So, for example, when setting the equal time for gas supply and its exhaust, the number of rigid plates 14 on the cylindrical walls of each cavity 11 and 12 is half the total plate quality. When changing the ratio of the time of supply and exhaust gas, a portion of the plates of the cylindrical wall of one cavity is attached to another while maintaining the total number of plates fixed on the spool 7. The protruding above the plates 14 along the cylinder forming elastic material 13 is a multiple sealing of the cavities And and 12, and Moutle holes 16 and 17 and nozzles 3 and 4 provide a steep front of the pulse. The application of the proposed pulsator design provides for the regulation of the pulsation mode in a wide range of frequency and duty cycle, which allows equipment selection and operation in the optimal mode, reducing, for example, the energy consumption of a lysine evaporator. Claim 1, A pneumatic pulsator, comprising a housing with inlet and outlet nozzles, rotatably mounted on a crawler shaft, equipped with channels for periodically connecting the nozzles of the housing, in order to increase the reliability and durability of seals and controlling the pulse ratio of the pulsations, the valve is made in the form of a hollow cylinder, divided into two cavities by three successively installed partitions, fixed on the welded shaft, The wall of each cavity is made open with the formation of a rectangular hole