SU808752A1

SU808752A1 - Vacuum valve

Info

Publication number: SU808752A1
Application number: SU762354641A
Authority: SU
Inventors: Владимир Константинович Лилье; Виктор Владимирович Лилье; Борис Глебович Львов
Original assignee: Московский Институт Электронногомашиностроения
Priority date: 1976-04-30
Filing date: 1976-04-30
Publication date: 1981-02-28

Description

1one

Изобретение относитс к вакуумной технике , а именно к устройствам вакуумной коммуникационной аппаратуры.The invention relates to vacuum technology, namely, devices for vacuum communication equipment.

Известна конструкци вакуумного клапана с грибовидным затвором, св занный с подвижной втулкой, а также при помощи кулачкового устройства с приводом, установленным перпендикул рно оси проходных каналов в корпусе клапана; затвор клапана при отпирании на начальном участке пути своего движени поступательно отходит от седла, а затем, разворачива сь на , освобождает проход потоку раГ5очей среды 1 .The known design of a mushroom-shaped vacuum valve associated with a movable sleeve, as well as with a cam device with a drive mounted perpendicular to the axis of the flow channels in the valve body; shutter of the valve when unlocking in the initial part of the path of its movement progressively departs from the saddle, and then, turning on, releases the passage to the flow of the working medium 1.

Однако в известном устройстве при уп7}отнении запорной пары возникает сильное трение между подвижной втулкой и хвостовиком затвора, а также между подвижной втулкой и валом привода , что приводит к преждевременному износу и заеданию сопр женных поверхностей , и, кроме того, влечет за собой увеличение мощности приводных устройств. Помимо этого, сопр жение подвижной втулки с хвостовиком затвора увеличивает площадь сечени клапанного узла, перекрывающего проходные отверсти в. открытом положении клапана, что уменьшает его проводимость в этом положении и усложн ет конструкцию.However, in the known device, when уп 7} the separation of the locking pair, there is a strong friction between the movable sleeve and the shank of the bolt, as well as between the movable sleeve and the drive shaft, which leads to premature wear and jamming of the mating surfaces, and, moreover, entails an increase in power drive devices. In addition, the mating of the movable bushing with the shank of the bolt increases the cross-sectional area of the valve assembly that covers the bore holes in the. open position of the valve, which reduces its conductivity in this position and complicates the design.

Цель изобретени - повышение проводимости клапана в открытом положении , а также повышение надежности устройства .The purpose of the invention is to increase the conductivity of the valve in the open position, as well as to increase the reliability of the device.

Указанна цель достигаетс тем, что подвижна втулка выполнена в виде коробчатой обоймы, не контактирующей с хвостовиком затвора и установленной на подшипниках вала с возможностью поворота.This goal is achieved by the fact that the movable sleeve is made in the form of a box-shaped holder that is not in contact with the gate shank and is rotatably mounted on the shaft bearings.

На фиг. 1 изображен клапан в разрезе; на фиг 2 - разрез А-А на фиг.1 на фиг. 3 - разрез Б-Б на фиг. 1.FIG. 1 shows a sectioned valve; FIG. 2 is a section A-A in FIG. 1 in FIG. 3 shows a section BB in FIG. one.

Вакуумный клапан содержит крышку 1, в которой расположен узел ввода вращени в вакууме, герметизирующийThe vacuum valve contains a cap 1 in which a rotation inlet assembly in vacuum is located, sealing

Claims

the shaft 2 located on the supports 3 of the cover 1 and the housing 4. The shaft 2 is connected to the electric motor 5 and has a protrusion 6 at the end controlling the operation of the valve, acting on the microswitches 7. In the vacuum cavity of the housing 4 there is a mushroom-shaped shutter consisting of a sealing fungus 8 with a gasket 9 and a shank 10 having a longitudinal groove through which the shaft passes

2. Fungus 8 is connected with springs 1 lc with a box-shaped holder 12 supported by bearings 3 with hoBOpOTa capability. Springs 11 press fungus 8 to the cone-shaped end of the shank 10, on which the driving pin 13 is fixed with the roller 1 and the pin 13 enters its end groove in the profile groove on the cover 1. On the shaft 1 there is a cam 15 in contact with the roller 14. The device operates as follows. Valve closed. When the valve is opened, the electric motor 5 rotates the shaft 2c with the cam 15. At the same time, the end of the pin 13 is in the straight section of the profile groove on the cover 1, therefore the fungus 8 with the shank 10 can only have translational motion. Springs 11 push the roller 14 of the pin 13 to the cam 15, providing removal of the sealing fungus 8 from the sealing surface of the housing 4. The box-holder 12 is stationary. By the time the pin 13 comes out of the straight section of the profile groove between the housing 4 and the sealing fungus 8, a guaranteed gap is formed, allowing the gate of the fungus 8 to open with the shank 10 in the housing 4, while the roller 14 is located in the depression of the cam 15 to which the springs are pressed 11. Upon further rotation of the shaft 2, the pin 13 does not limit the rotational movement of the fungus 8 with the shank 10 and the cam rotates it 90, while the fault 12 rotates around the bearings

3. The protrusion 6 acts on the microswitches 7 by turning off the electric motor 5. The valve is closed in reverse order, while the electric motor 5 rotates in the opposite direction. The implementation of a movable sleeve in the form of a box-shaped cage, which is not in contact with the valve stem and is rotatably mounted on the shaft bearings, allows increasing the conductivity of the valve in the open position, as well as reducing the required drive power and increasing the reliability of the device as a whole. The invention includes a vacuum valve comprising a housing, a mushroom valve associated with a movable sleeve, a control device in the form of a cam mounted on a shaft and a roller associated with it, and an actuator characterized in that in order to increase the conductivity of the valve in the open position and increase its reliability, the movable sleeve is made in the form of a box-clip, mounted on the bearings of the shaft can be rotated. Sources of information taken into account in the examination 1. USSR Author's Certificate No. 495477, cl. F 16 K 3/04, 1974.