Sand/Clay Batch Transporter

Application

The Transporter (pressure vessel shown at left) can be filled from your existing totes or this can be fed directly from your mixer, thereby eliminating fork trucking your totes.

To convey, the correct receiving bin is chosen at the control panel and product is then conveyed to “Plant x, Bin y” as required.  This eliminates the costly step of transporting your totes through your plant to the making line, while minimizing dust.

Operation

In operation an inlet and vent valve open to fill the transporter. When a high level indicator is reached, the inlet and vent valve are closed. The transporter is pressurized, from 15-80 psig. When the downstream line pressure is overcome material begins flowing down the conveying line at a low velocity, thereby conveying product without excessive degradation to your elbows and piping.

Existing Tote Filling Transporter

Receiving Bins with Bin Vent Filters Receiving Bin holds ~1.5 Batches

Air Boosters are used to separate the product flow, creating “slugs” of product, and aid in conveyance to the destination. Our booster injects air directionally forward and circumferential to provide the best dispersion possible. Our system requires only one product conveying pipe and one source air pipe to provide dependable conveyance.

Conveyance is completed once the pressure in the transporter reaches approximately 5 psig, as this indicates that the transporter and the conveying line are empty. The inlet and vent valve are then opened and the sequence is repeated.

Options:

Batching Transporters. Often the transporter will be weighed and used as a weigh hopper. The transporter will be filled to the appropriate weight and then conveyed with a very high degree of accuracy.

Blending Transporters. With the addition of an Aeration Cone this same material, volumetric or weighed amount, added can be blended, within the transporter, before being conveyed.

Continuous Systems. When continuous dense phase conveying is required two transporters are used in an alternating fashion. While one conveys the second unit fills. This provides the benefits of low velocity conveying with a continuous feed stream.

Blending Transporters

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Dense phase conveying is a low velocity, high pressure conveying system. This pneumatic approach is required in conveying sand mixtures, due to their abrasive characteristics. In comparison, dilute phase conveying systems operate with high velocity and low pressure.  This type of conveying is not suitable, from a wear standpoint, in conveying sand mixtures. 

Equipment

A dense phase system consists of:
- Piping and wear resistant elbows to convey product.
- A Transporter which is filled prior to conveying.
- Receiving bins at the destination with dust collection/venting.
- Control system, usually PLC based.       

Sand/Clay Pneumatic Conveying Systems