DE1729506C - Requirement and ventilation device for molding sand or the like - Google Patents

Description

The invention is based on the object of a recess for drying air, so that the housing 1 Device of the type mentioned at the outset can be ventilated from below with little.

star construction effort so that inside the housing 1 is between its

it is also suitable for drying molding sand 65 front housing wall 3 and that of the latter and guarantees a high level of efficiency. adjacent opposite supporting belt strand

This is achieved according to the invention in that the elevator 6 vertlas a parallel to this arranged in a manner known per se from untui forth ventilating partition 13, which the

Housing 1 divided so that an air exhaust duct 14 is formed in the latter.

As the fig. 1 in connection with FIG. 2 can be seen, the side housing walls 4, 5 in the 3 area between the partition 13 and the supporting belt run of the elevator 6 are penetrated by air passage holes 15, 16, in the area of which there are inside air guide surfaces 17, 18 with the guide direction to the supporting belt run of the elevator β are.

The partition wall 13 has at least one passage opening 19 running in its longitudinal direction, which allow the passage of air into the air exhaust duct 14, as indicated in the drawing with arrows is. The upper end of the air extraction duct 14 is via an air duct 20 on the suction side not shown fan connected, which may have a separator for about Air flow entrained molding sand, for example ZykTon separator, can be upstream.

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riditunT / powered elevator 6 to jets upper guide roller 8 promoted and there on a S levels thrown off the molding sand on it ? FördVrband 22 for the purpose of further funding. ·

borrowed air passage openings 15.16 /
TrSnunJsluft is sucked in and directed onto the molding sand.

1 sheet of drawings

Claims (2)

bare housing by a parallel to the elevator claims: between its supporting belt strand and the adjacent opposite housing wall 1. Conveying and ventilation device for running partition wall with at least one longitudinal molding sand od. The like. With a band-shaped 5 extending passage opening for connecting a Elevator and an air exhaust duct surrounding this is divided and the side Housing, characterized in that housing walls in the area between the partition which can be ventilated in a manner known per se from below and the supporting belt strand of air passage Housing (1) are penetrated by a parallel to the openings. Elevator (6) between its load-bearing io and the expenditure on a device adjacent to this at the beginning to realize and ensure lying housing wall (3) running separating type wall (13) with at least one longitudinal essential advantage. Through the partition in the Passage opening (19) to form an air housing is achieved that each on one Abzugkanals (14) is divided and the side 15 carriers of the conveyor belt accumulated form housing walls (4, 5) in the area between the amounts of sand essentially only from the side partition (13) and the supporting belt strand through the openings in the side walls of the housing from air passage openings (15,16) penetrated with fresh air are acted upon, the üthrough the are. Fan is sucked in via the exhaust duct. the 2. Device according to claim 1, characterized ge ao lateral application of the quantities of molding sand, that known Luftleit- binds on the one hand a blowing off of sand particles, surfaces (17, 18) in the area of the air passage ensures, on the other hand, a very effective Openings (15, 16) with the guiding direction for drying and cooling the molding sand, so that supporting belt run of the elevator (6) also hot molding sand with the desired are arranged. as the cooling effect can be promoted and this is dried. As a result of the large-area exposure of the molding sand with drying air can this at a relatively low speed sucked out of the housing, so that the 30 entrainment of sand particles is prevented. as well can the elevator with low feed The invention relates to a conveying and ventilation speed work so that the molding sand on Device for molding sand or the like is not thrown off with a belt upper conveyor end and shaped elevation conveyor and a baffle surface that surrounds it can be saved, ßenden housing. 35 It is also advantageous if known per se A known device of the above-mentioned air guide surfaces in the area of the air passage openings type (German Auslegeschrift 1 191 932) has a with the guide direction to the supporting belt run of the elevator driven at high conveying speed are arranged. This opens the elevator, through which the molding sand in the air flow is inevitably guided to the upper end of the supporting belt run against a supporting belt run of the elevator using the simplest means.
elastic baffle is thrown from this in an embodiment of the invention is thrown back to a discharge funnel. explained in more detail below with reference to the drawing. The shape of this is shown by means of this known device sand loosened during the promotion and F i g. I a schematic cross section of a pre-ventilated, but can not be sufficient in the direction of the previously described type and
dries and optionally after the removal from FIG. 2 a section along the line H-II of the hot flasks are cooled. Fig. 1. It is also a drying system for moist. A device according to the drawing has a Conveyed goods known (German patent 291514), the rectangular cross-section of the housing 1 with one from above over several circumferential belts in the 50 rear housing wall 2, a front housing lower device area and here on wall 3 and side housing walls 4, 5 on. In the entire conveying path of a warm air housing 1 is a belt-shaped Höhenfömerer 6 is dried with electricity. This is passed from a heat-spaced driver 7 through perforations of the revolving belts for endless Um'auf over deflection rollers 8, 9, passed and by means of a fan on the upper 55 of which at least one through a non-a |> e device part sucked off. This well-known signed motor can also be driven.
The device is not suitable for drying the housing I is covered by a plate 10 on the underside Molding sand, as this is not only closed by the perforation and points above the latter on the gene of the circumferential belt would go through, front housing wall 3 a funnel 11 for but also not in the desired way on 60 molding sand. In the area of the funnel 11 is could be promoted upwards. In the front housing wall 3, a mounting slot 12