SU629146A1

SU629146A1 - Closure to pneumatic transport units

Info

Publication number: SU629146A1
Application number: SU772446228A
Authority: SU
Inventors: Владимир Николаевич Слесарчук; Виталий Григорьевич Дрозд; Бекет Сапабекович Махмутов; Владимир Константинович Вороненко; Борис Петрович Сулима
Original assignee: Центральное Проектно-Конструкторскотехнологическое Бюро
Priority date: 1977-01-25
Filing date: 1977-01-25
Publication date: 1978-10-25

Description

1 one

Изобретение относитс к пневматическому транспорту сыпучих материлов и может быть использовано в горнорудной пр0№1шленности дл транспотировани и зар жани гранулированными взрывчатыми веществами шпуров, скважин и минных камер.The invention relates to the pneumatic transport of bulk materials and can be used in mining applications for transporting and loading boreholes, wells and mine chambers with granulated explosives.

Известен затвор камерного питател пневмо- и гидротранспортных установок с запорным клапаном, кинематически св занным с приводным горизонтальным валом .A known gate of the chamber feeder of pneumatic and hydrotransport installations with a shut-off valve, kinematically connected with a driven horizontal shaft.

В этом устройстве герметизаци камеры происходит путем поворота запорного клапана, жестко,закрепленного посредством рычага на приводном поворотном валу.In this device, the chamber is sealed by turning the shut-off valve, rigidly fixed by means of a lever on the driving rotary shaft.

При такой конструкции запорного устройства происходит интенсивный износ уплотнени из-за посто нного прижати к нему запорного клапана в момент перекрыти загрузочногоWith this design of the locking device, there is an intense wear of the seal due to the constant pressing of the shut-off valve to it at the moment of closing the loading valve.

отверсти .holes.

Известен затвор к пневмотранспорным установкам, содержащий корпус с загрузочным отверстием, и седлом, запорный клапан,шарнйрко установленный на рычаге, закрепленном на приводном валу, и ограничитель, поворота клапана 2J.Known shutter to pnevmotranspornyh installations, comprising a housing with a loading opening, and a saddle, a shut-off valve, sharnyro mounted on the lever mounted on the drive shaft, and the limiter, the rotation of the valve 2J.

Недостатком известного устройства вл етс сложность конструкции, наличие пружины кручени и трущейс пары: кулачок-обойма, что важно приA disadvantage of the known device is the complexity of the design, the presence of a torsion spring and rubbing pairs: cam-clip, which is important when

транспортировке взрывоопасных и лег ковоспламен ющихс материалов.transportation of explosive and flammable materials.

Цель изобретени - упрощение конструкции и повышение надежности затвора , а также обеспечение гарантированного зазора между седлом и клапаном .The purpose of the invention is to simplify the design and increase the reliability of the closure, as well as providing a guaranteed clearance between the seat and the valve.

Указанна цель достигаетс тем, что рычаг выполнен в виде изогнутого упругого элемента переменной по длине жесткости, кривизна которого направлена в сторону, противоположную направлению перекрыти загрузочного отверсти .This goal is achieved by the fact that the lever is made in the form of a curved elastic element of variable length along the rigidity, the curvature of which is directed in the direction opposite to the direction of overlap of the loading opening.

Кроме того,затвор может бытьIn addition, the shutter can be

снабжен упором, в верхней части которого установлен регулирующий винт, причем упор расположен на приводном валу перед рычагом запорного клапана в одной плоскости с ним.provided with a stop, in the upper part of which a control screw is installed, with the stop located on the drive shaft in front of the shut-off valve lever in the same plane with it.

На фиг.1 изображено предлагаемое устройство, общий вид; на фиг.2 разрез А-Д на фиг.1.Figure 1 shows the proposed device, a General view; in Fig.2 a section aD in Fig.1.

Затвор состоит из дозирующей камеры 1, крышки 2 с уплотнением 3,The shutter consists of a metering chamber 1, a cover 2 with a seal 3,

Claims

shut-off valve 4, lever 5 hinged at one end. Lever 5 is made in the form of a curved elastic element of variable stiffness and is preloaded with limiter 6, i.e. the lever is partially straightened and remains in this form by depressing the stopper while turning the material in the medium so that when the valve approaches the loading window between the seal and the loading window there remains a constant gap The stopper 6 is equipped with a regulator 7 which serves to change the lever preloading during operation In different materials in density, the Lever 5 and the restrictor 6 are rigidly fixed on the drive shaft 8. The stop 9 serves to limit the movement of the check valve 4 by closing the loading window with it. Compressed air is fed into the dosing chamber through the nozzle 10 and the aerator torus 11. Aerated material is injected through the outlet nozzle 12 into the transport pipeline 13. The device operates as follows. In the initial state, i.e. at the time of the load of the dosing chamber, the loading window is open, the valve 4 with the lever 5 (shown in dotted lines in Fig. 2) is retracted. Lever 5 is preload but loaded with a limiter and adjusted by regulator 7 to a certain density of material. After the chamber 1 is filled with material, the lever 5 with valve 4 is rotated by means of a drive shaft 8. There is a constant clearance between the zaporn® valve 4 and the seal 3 When the valve 4 reaches the stop 9, vsh 8 continues to turn, the lever straightens - (this clears the gap) and finally seals the chamber. Subsequently, compressed air is supplied to chamber 1 through nozzle 10 and aerator 11, and aerated material is pumped through outlet nozzle 12 to transport pipeline 13. After the material is produced from the dosing chamber, the check valve 4 with lever 5 rotates and takes its initial position. When working with a different density material to measure the magnitude of the preliminary loading, the lever 5 can be adjusted by the adjuster 7. The lever is made of an elastic material in the form of a curved plate of variable cross section. In the inventive device, the loading opening is closed and the dosing chamber is then sealed by one turn of the drive shaft connected by means of an elastic lever to the gate valve, which simplifies the design and increases the reliability of the device, since the resistance of the material decreases when the lever is turned with the valve. Claim 1. Intake valve for pneumatic conveying installations, comprising a housing with a loading opening and seat, a shut-off valve pivotally mounted on a lever fixed to the drive shaft, and a valve rotation stop, characterized in that, in order to simplify the design and increase the valve’s density, the lever is made in the form of a curved elastic element of a variable along the length of the rigidity, the curvature of which is directed in the direction opposite to the direction of the overlap of the loading opening. 2. The closure of claim 1 / o tl and h a and u so that, in order to provide a guaranteed clearance between the seat and the valve, the shutter is fitted with ynopoMi and the upper part of which is equipped with a control screw, with the stop located on the drive shaft in front of the lever shut-off valve in the same plane with him. Sources of information taken into account in the examination 1.Demidyuk GP and Bugaysky A.I. Means of mechanization and technology of blasting using granular explosives, M., Nedra, 1975, p.104.

2. For the number 2364300/11 from 14/05/76.

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