SU787309A1

SU787309A1 - Chamber feeder of pneumatic transport unit

Info

Publication number: SU787309A1
Application number: SU792731567A
Authority: SU
Inventors: Валерий Яковлевич Морев; Юрий Герасимович Иванов; Владимир Лазаревич Басс; Валерий Абрамович Берин
Original assignee: Государственный Проектный Институт "Ярославский Промстройпроект"
Priority date: 1979-02-28
Filing date: 1979-02-28
Publication date: 1980-12-15

Description

1one

Изобретение относитс к пневматическому транспорту, а именно к конструкци м камерных питателей нагнетательных пневматических установок, , транспортирующих сыпучие, мелкоэернистые материа.лы.The invention relates to a pneumatic transport, namely to the designs of chamber feeders of pneumatic injection systems, transporting bulk, fine-grained materials.

Известен камерный питатель пневмотранспортной установки, содержащий приемную камеру с загрузочным клапа- ц. ном, трубопровод подачи сжатого воздуха и расположенный внутри приемной камеры материалопровод с укрепленным на его заборной части отражателем.A chamber feeder of a pneumatic conveying installation is known, comprising a receiving chamber with a charging valve. nom, the compressed air supply pipeline and the material pipeline located inside the receiving chamber with a reflector fixed on its intake part.

Недостаток такого камерного пита- |5 тел состоит в том, что при загрузке приемной камеры происхог(ит завгш материалом его донной части и заборной зоны материалопровода, что приводит к образованию запорной пробки из ма- 20 териала в начальный момент работы питател . Кроме того, конический отражатель известного питател а силу своего конструктивного выполнени сужает зону образовани аэроматеригшь- 25 ной смеси, не обеспечивает равномерного истечени материала из камеры к заборной части материалопровода (1.The disadvantage of such a chamber feed is that when the receiving chamber is loaded (it is filled with the material of its bottom part and the intake zone of the material pipeline, which leads to the formation of a stop plug from the material at the initial moment of the feeder operation. In addition, The conical reflector of the known feeder, because of its constructive performance, narrows the zone of formation of the aeromaterial mixture, does not ensure uniform flow of material from the chamber to the intake part of the material pipeline (1.

Цель изобретени - увеличение производительности и надежности транспор оThe purpose of the invention is to increase the productivity and reliability of transport

тировани путем исключени завала материалом заборной части материалопровода и днища камеры питател в момент загрузки и одновременного увеличени зоны образовани аэроматериальной смеси.This is done by excluding the material from the intake part of the pipeline and the bottom of the feeder chamber at the moment of loading and at the same time increasing the zone of formation of the air-material mixture.

Поставленна цель достигаетс тем, что отражатель выполнен в виде кольцевы;; дисков, установленных наiзаборной чатзти материалопровода на расто нии друг от друга, при этом диаметральные размеры каждого нижерасположенного больше, чем вышерасположениого .The goal is achieved by the fact that the reflector is designed as an annular ;; discs installed on the pre-selection of the material pipeline at a distance from each other, with the diametrical dimensions of each lower position larger than the one above.

Кроме того, диски отражател закреплены на одинаковом рассто нии, при этом разность между наружным диаметром выиерасположенного диска и внутренним диаметром соседнего нижерасположенного определ етг по формуле , 2ИIn addition, the reflector disks are fixed at the same distance, and the difference between the outer diameter of the dislocated disk and the inner diameter of the adjacent lower one is determined by the formula, 2И

.v.v

где Н - рассто ние между дисками; - угол естественного откосаwhere H is the distance between the disks; - angle of repose

материала.material.

Claims

The upper and the lowermost disks along the perimeter are mated respectively with the outer surface of the material pipeline and with the inner surface of the bottom part of the chamber. FIG. 1 schematically shows a chamber feeder in the load, general view; in fig. 2 is a cross section of d-A in FIG. one; in fig. 3 - node I on fi 1c increased in size during operation of the feeder; in fig. 4 is a section BB in FIG. 3; in fig. 5 - node P of FIG. 3 in the increased size in momen of a loading of a feeder. The feeder consists of a receiving chamber 1 (Fig. 1.2) with a bottom 2, in the upper part of which there is a neck 3 with a charging valve 4, a pipeline 5 with a valve 6 for feeding compressed air and a material pipeline 7 having a discharge section 8 and located n the axis of symmetry of the chamber intake section 9. In the intake section 9, strengthened the reflector 10, formed by a set of annular disks 11-16, mounted in increasing of their diameters (Fig. 3). The disks are reinforced with lightweight ribs 17 on the material pipeline 7 so that the inner surface of the upper disk 11 is matched on the perimeter with the outer surface of the mother duct 7, and the outer surface of the disk 16 is matched with the inner bottom of the bottom part 2 of the chamber 1. elements of the chamber .1 and the material line 7. All annular disks are located at equal distances x H from one another, so that each upstream disk has an outer diameter larger than the inner diameter of the next claim (Fig. 4.5). The difference in diametral sizes of any adjacent disks is determined by the formula where of. - angle of repose of the material. The feeder works in the following manner. Through the throat 3 when the compressed air pipe 5 is not used behind the load valve 4 and the valve 5 is closed, the chamber 1 is loaded by the material in a known manner. The bulk material, the pad on the reflector 10, is located on the substrates annular discs evenly (fng.5), taking the natural shape corresponding to the bulk material with the formation of the angle of repose on mutually overlapping areas having a width of / 2 annular discs. In case the width of these parts The fabric is less than / 2 (Calculated by the above formula), the material expires spontaneously, which is unacceptable. After loading the chamber 1 of the feeder, the front part 2 and the intake section 9 of the pipeline 7 are free of material, therefore, the zone formation of aeromaterial mixture is prepared for work. Download is over. The valve 4 of the neck 3 is closed, open the valve b of the pipe 5 of compressed air. Moreover, the material from the inner surfaces of the annular disks of the reflector 10 begins to flow evenly (FIG. 3) with conical cascades to the freedom of the intake part 9 of the material 7. the center of the bottom, into the zone of intake of these reflector levels - from its top to the bottom, while the compressed air can penetrate through all the interdisk gaps. 1. Chambered feeder of a pneumotransport unit containing a receiving chamber with a charging valve, a compressed air supply line and located inside the receiving material pipeline with a reflector fixed on its intake part, so that, in order to increase productivity and reliability transportation by eliminating the material intake of the inlet part of the pipeline and the bottom of the feeder chamber at the moment of loading and at the same time increasing the zone of formation of the aero-material mixture, The holder is made in the form of annular discs fixed on the intake part of the material-supplying conductor at a distance from each other; in this case, the diametral dimensions of each underlying disk are larger than the upper one.

2. A feeder according to claim 1, wherein the reflector disks are fixed at the same distance, wherein the difference between the outer diameter of the upstream disk and the inner diameter of the adjacent lower one is determined by, 3 and - 1 where H is the distance between the disk and; d is the angle of repose of the material.

3. Feeder on PP. 1, 2, characterized in that the upper and the lowermost disks along the perimeter are coupled, respectively, with the outer surface of the material pipeline and with the inner surface of the bottom of the chamber. Sources of information taken into account in the examination 1. USSR author's certificate 317589, cl. B 65 G 53/06, 11.03.70