DRY ICE CONTAINER FOR DRY ICE CLEANING DEVICES

Abstract

Dry ice container for dry ice cleaning devices comprises the container for dry ice closed by the lid (2) on the upper side, and provided by the opening (3) for drawing out dry ice pellets on the lower side. The container (1) has the bottom (4) sloped towards the opening (3) for drawing out the pellets. The linear-movable member (5) is arranged in the chamber (6) at the bottom (4) of the container (1) transversely to the axis of the container (1). The member (5) has the shape of a gutter in which groups of separated openings (5a, 5b, 5c) are provided, to which at least one pellets plowing element (5d) is placed in the member (5). Each group of openings (5a, 5b, 5c) pertains to one opening (3) for drawing out the pellets.

Claims

1. A dry ice container for dry ice cleaning devices comprising a container for dry ice closed by a lid on the upper side, and provided by an opening for drawing out dry ice pellets on the lower side, where the container has the bottom sloped towards the opening for drawing out the pellets, at which linear-movable member is arranged, and supply of auxiliary air is discharged above the bottom of the container, wherein the linear-movable member is arranged in the chamber at the bottom of the container transversely to the axis of the container, where the member has the shape of a gutter in which groups of separated openings are provided, to which at least one pellets plowing element is placed in the member, each group of openings pertains to one opening for drawing out the pellets, where the openings for drawing out the pellets are connected through the collector to the outlet of the pellets, the member is connected to the piston of pneumatic cylinder, and the supply of auxiliary air above the bottom of the container is formed by the tubular body transversely extending through the container in the direction of the member, where the body is outside the container at one end connected to a source of auxiliary air, inside the container it is provided at least by one opening of the outlet of auxiliary air arranged against the bottom of the container, and on the other end outside the container it is provided by the opening for the outlet of residual auxiliary air.

2. The dry ice container according to claim 1, wherein the source of auxiliary air is the outlet of dump operating air from the pneumatic cylinder.

Description

BRIEF DESCRIPTION OF DRAWINGS

[0007] This invention is better explained on accompanying drawings, where

[0008] FIG. 1 shows overall outside view of the container according to this invention with schematic connection of the blast gun;

[0009] FIG. 2 shows the view of the lower part of the container of FIG. 1 in partial section;

[0010] FIG. 3 shows overall view of the linear-movable member; and

[0011] FIG. 4 shows the lower part of the container according to this invention in side sectional view.

[0012] Arrows or arrows with associated lines shown in drawings represent respective directions and flows of the air, or air with pellets in the entire device and the container.

MODE(S) FOR CARRYING OUT THE INVENTION

[0013] The device comprising the container 1 according to this invention is schematically shown in FIG. 1. The device is composed of pair of lines leading to the mixing node, which is realized by Venturi tube integrated in the body of blast gun 15. The first line A (positive pressure) represents the inlet system of gaseous medium. The second line B (negative pressure) serves for transport of the pellets to the mixing chamber in the blast gun 15.

[0014] Dry ice container for dry ice cleaning devices according to this invention, according to FIGS. 2 to 4 comprises the container 1 for dry ice closed by the lid 2 on the upper side, and provided by the opening 3 for drawing out dry ice pellets on the lower side. The container 1 has the bottom 4 sloped towards the opening 3 for drawing out the pellets. Linear-movable member 5 is arranged transversely to the axis of the container 1, in the chamber 6 at the bottom 4 of the container 1. The member 5 is in the form of a gutter, in which groups of separated openings 5a, 5b, 5c are provided. To each group of the openings 5a, 5b, 5c, the pellets plowing element (5d) is placed in the member 5. Each group of openings 5a, 5b, 5c pertains to one opening 3 for drawing out the pellets, the number of which is in this example two. The openings 3 for drawing out the pellets are connected through the collector 7 to the outlet 8 of the pellets. The member 5 is connected to the piston of pneumatic cylinder 10. The supply of auxiliary air at the bottom 4 of the container 1 is formed by tubular body 12 transversely extending through the container 1 in the direction of the member 5. The body 12 is outside the container 1 at one end connected to the source of auxiliary air. The body 12 is inside the container 1 provided by at least one opening 13 of the outlet of auxiliary air, which is arranged against the bottom 4 of the container 1. The body 12 is on the other end outside the container 1 provided by the opening 14 for outlet of residual auxiliary air.

[0015] Pellets are inserted into the container 1. The pellets are supplied to opened chamber 6 by the gravity and sloping of the bottom 4 of the container 1. Movable gutter, i.e. the member 5 performs linear reciprocation motion through the pellets, while pellets plowing element 5d creates above the openings 3 for drawing out the pellets, which are continuously consecutively opened by the openings 5a, 5b, 5c and closed by solid areas between these openings 5a, 5b, 5c, the air gaps that are subsequently filled with incoming pellets. The pellets are passing to suction openings 3 through the member 5 by the openings 5a, 5b, 5c during their transition over the suction openings 3. In this example of embodiment, the number of the openings 5a, 5b, 5c is three. The outer openings 5a, 5c provide for the flow of the pellets to the opening 3 at the end positions of the member 5 and the middle opening 5b provides for the flow of the pellets also during the motion of the member 5 (not only at the end positions), thus ensuring continuity of the flow of the pellets to respective opening 3. The number, shape and spacing of the openings 5a, 5b, 5c, can be adjusted according to the needs, and so can be the number and shape of the plowing elements 5d. In this example of embodiment, the plowing elements 5d are in the form of walls, each of them pertaining to one group of openings 5a, 5b, 5c. Moving member 5 is plowing the pellets, i.e. preventing formation of clusters of pellets, in front of the openings 3, while by continuous consecutive opening and closing of the openings 3 for drawing out the pellets, is preventing their blockage by the pellets drawn in from above and regulates amount of passing pellets.

[0016] The flow of pellets is supported by supply of the auxiliary air to the pellets in the lower part of the container 1, i.e. in the area of the bottom 4, where the pellets shortly after enter the opened chamber 6. Preferably, working air dumped from the pneumatic cylinder 10 that serves to drive the member 5, is supplied to the tubular body 12. Part of the volume of passing air supplies feeding system of the device through the opening 13 of the outlet of auxiliary air, the most preferably in the shape of longitudinal groove, aperture. This system supplies the container 1 with sufficient volume of treated air, the system takes from this source adequate amount and the redundant part is dumped through the opening 14 for the outlet of residual auxiliary air. As was mentioned above, the pneumatic system, i.e. pneumatic cylinder 10 is preferably used as the source of auxiliary air, because this air is passing through purification and humidity separation before its use, thus its adverse effect on quality of the pellets decreases.

[0017] Above described example of embodiment represents only one particular construction embodiment of the container according to this invention, while this example is introduced only as an illustrative example to explain the principle of the technical solution and it is not in any way limiting also for other constructional variants within the scope of the claims.