SU558157A1 - Loading and dosing device for vacuum installations - Google Patents

Description

one

The invention relates to the field of dosing materials.

A loading and metering device with a mechanism for feeding sons is known.

Closest to the invention, the technical essence is a loading-dosing device containing a sealed measuring container with inlet and outlet valves installed on a common brush, connected at the inlet with the feed bin, and at the outlet with a vacuum chamber, as well as drive.

However, in this device it is impossible to replace the bunker without breaking the vacuum in it and in the chamber.

In order to ensure the replacement of the bunker without vacuum disturbance in it and in the chamber, the proposed HITOK device is detachable and provided with a connecting cartridge for fixing the inlet valve, the brush is axially displaced relative to the cartridge and has a slot, the cartridge is equipped with a spring-loaded lock, the input The clanan is spring loaded with the possibility of pressing when the hopper is disconnected, and the output Kvianan is equipped with a saddle mounted on a threaded connector with HITOKOM.

FIG. 1 shows the general view of the described device in section; pas figs. 2 - the same, section along A-A in FIG. one; pas figs. 3 is the same; the section along BB in FIG. one; in fig. 4 - position of the rod relative to the cartridge at the time of pumping the body of the loading and interrogation device (dosing of bulk material has not yet begun).

The housing 1 of the charging and dispensing device has two flange connections with a vacuum seal; - for connection with the vacuum chamber 2; the top is for securing the hopper 3 with bulk material. A vacuum-tight inlet 4 is provided for mounting the actuator 5 with the shaft-gear 6. On the axis of the housing 1 in the guide bush 7 of the vacuum-tight inlet 4 is installed a shim 8. A rod has a cylinder shape, in which a tooth is cut in the middle part implementation of the rack and pinion gear from the shaft - gear 6, and in the upper part there is a plane having a cut out slot 9 along the entire perimeter (Fig. 3). The rod 8 is held in a vertical position by rack and pinion engagement. At the lower end of the stem 8, the cap nut 10 on the threaded connection by means of the seal 11 has a seat 12, the truncated side surface of which fits snugly against the seal 13 prepared in the inner ring and the CMOirrnpOBanHoro in the housing 1.

The cartridge 14 (FIG. 3), having a spring-loaded retainer 15, freely enters the upper end of the rod 8. The valve 14 is prevented from turning the cartridge 14 in the rod 8. The valve 17 of the hopper 3 has a cylindrical protrusion in the lower part, which serves to secure the bayonet connection. 18 valve to the i-tron 14. To prevent the bulk material from getting onto the rod, barriers 19 and 20 serve. The exposed surfaces of the vacuum inlet 4 are made with beveled edges (Figures 2 and 3). Such a constructive implementation eliminates the delay of the bulk material on the surface of the vacuum-tight inlet 4 and ensures its complete spilling into the vacuum chamber. When the bayonet connection is disconnected, the valve 17 is pressed against the inlet of the hopper by spring 21. To dry the valve 17 against the walls of the inlet of the bunker, a seal 22 is used that is mounted into the body of the hopper 3 in the form of an annular gasket.

The valve 17, like the saddle 12, has a conical surface, due to which, firstly, the spilling of the bulk material is facilitated, and secondly, as the valve moves away from the seat, the section of the outlet of the bunker changes, which is necessary for dosing bulk material from the bunker .

The device works as follows.

The hopper 3 is pre-evacuated to the working vacuum, filled with bulk material, the spring 21 provides a reliable fit of the valve 17 to the seat of the bunker-sealing gasket 22. In such a state, the hopper is mounted on the housing 1. The cylindrical protrusion of the valve 17 freely enters the cartridge 14 and by turning the hopper 3, the bayonet connection 18 is closed, after which the upper flange connection of the housing 1 with the hopper is secured.

In this position, the loading and dispensing device is considered prepared for the start of the cycle.

After that, the actuator 5 is turned on, and the shaft - gear 6, through the rack and pinion gear, begins to move the rod 8 downwards (Fig. 3). It slides freely over the surface of the cartridge 14 and simultaneously moves the saddle 12 until the retainer 15 enters the socket 9 of the rod 8 (FIG. 4). During this movement and in position, as shown in FIG. 4 (if the stock is not further moved), the internal volume of the housing 1

it is connected to the vacuum chamber 2, and it is pumped to the working vacuum by the pumping system of the vacuum chamber. The hopper remains closed during this pumping.

If the stem 8 continues to move downwards, since the cartridge 14 is in this position connected to the stem by means of the clamp 15, the valve 17 also moves downwards, as a result of which the inlet opening of the hopper opens and the bulk material is fed into the vacuum chamber. There is a process of metallization. When replacing the bunker, in order to seal the vacuum chamber of the multi-chamber and the vacuum volume of the bunker, the rod must be moved upwards. When the valve 17 hermetically closes the inlet of the bunker (the inlet of the vacuum chamber still remains open), the cartridge 14 remains stationary. M, and the upwardly extending pin 8 will drown the locking pin 15 and then continue to slide freely along the cartridge until the saddle 12 closes the inlet tightly vacuum hole

cameras.

FIG. 3 shows the position when both the hopper and the vacuum chamber are sealed. At this cycle of operation of the loading and metering device ends.

After that, the replacement of the bunker is carried out, and in the next work cycle, both the bulk material and the new bulk material can be supplied.

Claims (1)

Invention Formula The charging and dosing device of vacuum installations containing a sealed measuring tank with inlet and outlet valves mounted on a common rod, connected at the inlet with the feed bin, and at the outlet with a vacuum chamber, as well as an actuator, characterized in that the bunker without breaking the vacuum in it and in the chamber, the stem is made detachable and provided with a connecting cartridge for securing the inlet valve, the stem is axially displaced relative to the cartridge and has a socket, cartridge fitted with a spring-loaded retainer, the inlet valve is spring-loaded with the possibility of pressing when the hopper is disconnected, and the outlet valve is provided with a seat mounted on a threaded connection with the rod.