DE2556303A1 - Synchronized pneumatic granular batch feeder - has large particle conveyor with reduced wear through valve ended chambers - Google Patents

Abstract

Timed inlet and outlet butterfly valves batch heavy bulk material through an in-line chamber. The valves close clear of the conveyed material, reducing valve wear. One central rotating distribution pipe successively feeds concentrically disposed chambers connected to a common outlet. Pneumatically conveyed grain at a nozzle (2) passes through pipe chambers (4) to an outlet pipe (8). Two driven (7) cams (6) set upper inlet (3) and lower outlet (5) valves on each chamber. An empty depressured chamber is filled and the rotary nozzle turns, directing to the next chamber. The upper valve closes, contact-free of the contents and the lower valve opens for discharge.

Description

Description and explanation of the patent and auxiliary

Customary registration "Pneumatic chamber pressure conveyor" Es it is known to use so-called pressure vessels for conveying bulk materials.

These pressure transmitters can only be used for bulk goods that can be fluidized are, i.e. usually grain sizes up to 10 mm.

This information is still heavily dependent on the specific gravity.

If you want to transport bulk goods that have a larger grain size, as a rule, rotary feeders or rotor chamber conveyors are used.

The disadvantage of the cellular wheel and chamber conveyors is the high level of wear the sealing surfaces opposite the rotor and the chambers.

With steady conveyance, the same difficulty lies in printing transmitters in the locking devices such as cone slide valves, bell valves, rotary flaps etc.

In the prior art counting pneum. Move pressure conveyors all parts that are supposed to effect the closure are in the room, where material at the same time flows, i.e. they have to work against the flow of material, close and thus seal.

This inevitably causes a very high level of wear.

In order to eliminate these disadvantages, it is proposed according to the invention that a pneum. Chamber pressure conveyor must be used according to the accompanying drawing is executed.

The attached drawing shows: With 1: the material supply with 2: a rotating filling pipe, which via switching elements in the pressure-free space the corresponding

Fills the filling chambers via open sealing flaps or slides (3).

The rotating Filling tube (2) moves to the next chamber and closes in the same time interval the sealing element (3) in the material-free and pressureless space opposite the filling chamber (4) off.

After closing, the lower sealing element (5) is opened, the although it opens under pressure, the material then fills into the delivery discharge (8), and afterwards the final emptying is the lower sealing element (5) in the material-free Room closed automatically.

The adjustment of the chambers in the pressure conveyor is done by an actuator (7), which can consist of a gear motor or chain drive, for example and preferably by means of adjusting cams (6) interlocking, opening and filling and emptying determined as a function of time.

In the inventive idea is due to the construction Guaranteed that the sealing elements (3) and (5) guaranteed in any case move in the material-free space and thereby the in the pneum.

Pressure conveyor technology known wear of the sealing elements that have to work in the material end is avoided.

Patent and utility model claims:

Claims (1)

Patent and utility model claims: =========================. ================= Claim 1: Pneumatic chamber pressure conveyor characterized in that that the sealing elements are arranged in the individual chambers so that a Closing is always carried out in a material-free area. Claim 2: Pneumatic chamber pressure conveyor characterized in that that the rotating filling pipe (2) allocates in the pressureless state and the sealing elements (3) and / or (5) depending on predetermined switching contacts via preferably Adjustment cams (6) with preferably coupled actuator (7), e.g. cell wheel with Drive chain or gear motor, are coupled and driven.