Vacuum Units
series UATC, UATV, UAVL

They are machines and devices used to create vacuum in the pneumatic transport systems that use vacuum laders series ATS, AJS, ATSY, AJSY, ATS-R and ATSY-R.

The vacuum groups series UATC side canne blowers, single or double stage, and with single or twin impeller.

In the vacuum groups series UATV are installed lobes vacuum pumps .

The vacuum device series UAVL are constituted by vacuum generators with multistage venturimeters.

In the vacuum units UATC and UATV the blowers and the pumps are fixed on a palletizable chassis that houses also a safety filter. The vacuum generators UAVL are directly installed on the pneumatic loaders (AJS, AJSY).

The blowers and the pumps of the vacuum units UATC and UATV are driven by electric three-phase motors. The blowers of the UATC units have powers installed that vary from 0,2 Kw to 22 Kw, referred to 50 Hz, they can produce air flow capacity until 2000 m3/h and they are able to reach a relative vacuum of 500 mbar. The pumps of the UATV units have powers installed that vary from 0,37 Kw to 15 Kw, referred to 50 Hz, they can produce air flow capacity until 500 m3/h and they are able to reach a relative vacuum of 1000 mbar.

The vacuum generators UAVL are fed with compressed air and they are able to create a relative vacuum of about 900 mbar and produce air flow ranges from 50 m3/h until about 190 m3/h from the smallest to the biggest model, with a consumption of compressed air at 4 bar that goes from a minimum of 250 Nl/min to a maximum of 1000 Nl/min.

The blowers of the UATC units and the pumps of the UATV units can install some accessories such as exhaust air silencer, vacuum relief valve and vacuum gauge.

Are available also soundproofing cabins to limit the propagation of the noise in the environment within 80 db.

The vacuum units UATC and UATV can be provided in the Atex version when it is requested.

The safety filter is constituted by a cylindrical container where it is housed a star-shaped filtering element made in polyester needle punched fabric. The safety filter function is to protect the pump impeller from the accidental entrance of product that may cause the block. Infact it can happen that the filter in the receiving hopper wears out until tearing or cut cause of foreign matter accidentally present in the conveyed product.

During the normal functioning it can happen that a small percentage of powder passes through the filter of the receiving hopper. This small quantity of product is intercepted by the safety filter and even after a few days of work it can become not insignificant entity. The filtering element is equipped with a mechanical cleaning shaker that can be actioned manually from the outside or also automatically managed with a pneumatic cylinder driven by a timed sequence. The dust which comes off the filter is recaptured in a removable basket placed at the base of the container and that has to be periodically emptied.

In cases where it is requested it can be adopted high retention filtering elements with filtering efficiency until 1 micron (Class M) and also filters category H ( HEPA or absolute with filtering efficiency 99,995% until 1,18 micron). These last are suggested in presence of very fine and toxic powder that can contaminate the environment if they are not retained effectively.

On the air entrance of the vacuum units UATC and UATV are installed two interception gate valves that work in exchange. One gate valve is connected to the vacuum line while the other one to the environment. At the end of every cycle of transport the pump keeps spinning, it is closed the vacuum line gate valve and it opens the one that let the air in from the environment. In this way, between one cycle and the other, the pump continues to suck air which contributes to keep the impeller in good efficiency and avoid a possible block due to overheating. After a certain amount of inactivity time of the pneumatic transport the pump automatically turns off. On the environment air intake inlet it is installed also a cartridge filter with steel protection grid to prevent the accidental entrance of dangerous objects.

The construction materials normally used for the safety filter container are carbon steel and stainless steel Aisi 304 but it is possible to use also stainless steel Aisi 316L on request.

The outer surfaces are varnished or satined.

The palletized chassis is carpentry made of varnished carbon steel or stainless steel Aisi 304 on request.

The gaskets are made in NBR or SBR.

Electrical control panels can also be supplied including a PLC controller and software specifically designed to set timing and sequences of the phases that compose the pneumatic transport cycles.