DE1947250A1 - Spray for cleaning tank interiors - Google Patents

Abstract

Fluid under pressure pumped to a spray inside the container is forced out and atomised either continuously or intermittently onto the walls to provide a scouring or flushing effect in conjunction with a stirrer providing turbulence. The spray can have narrowed outlets to promote the atomising effect and can have top and bottom outlets so as to provide an upper fine spray or a coarse bottom spray. The bottom spray passes down the walls and the fine spray jets onto the lid and fitments there.

Description

Apparatus for spraying liquids The present invention refers to a tank cleaning device which does not have any freely moving parts contains. This device atomizes supplied, pressurized liquids. The resulting spray mist, e.g. from cleaning solutions, evenly wets the inner surfaces of tanks, containers or other vessels.

The sprayer has a compensation chamber to ensure a uniform To cause the liquid to flow out around the spray head. At one end of the Compensation chamber is a limited opening that allows the formation of a vigorous Spray causes.

There are various rotating types for cleaning internal surfaces in tanks and fixed systems known, the tank walls by individual spray jets or moisten or flood with a bundle of rays. Through constant pumping over Large amounts of the draining liquid become the impurities on the tank walls mainly replaced by erosive effects.

While in known systems mostly continuous operation is present, an alternating application is made in the device according to the invention preferred.

In the present invention, by working alternately significantly reduce the amount of fluid required. With conventional systems e.g.

a liquid volume of at least 100-120 l / min. and for a total cleaning process approx. 170 - 200 1 / min. needed. With the same conditions is a volume of approx. 40 1 / min for the new device. and a total volume of approx. 90 rpm.

necessary.

Abbo 1 shows how it is used and how it works in a milk container.

Fig0 2 is a sectional drawing through the spray head.

It is about the representation of the construction through which one Generation of strong spray is effected and thereby a simultaneous effective The surfaces are acted upon (see Fig. 1).

Fig. 3 shows the view of the head shown in Fig. 2. Here the outlet openings for generating the strong spray are in action shown.

Fig. 4 is the sectional drawing of a modified spray head according to Fig. 2, which is constructed on the same principle of the present invention. This head also creates a strong spray consisting of droplets, which cause an even loading of the atkwandung.

Fig. 5 illustrates the operation of the head shown in Fig. 4.

In Fig. 1 the effect of two sprayers (1) and (2) is illustrated, which work on the principle of the present invention. The heads are with one Feed system (3) and (4) (e.g. pumps) connected.

Each spray head is inserted into the inlets by means of a screw connection (5) (6) or (7) attached to the cover (8).

The spray heads are mounted in the tank (9) so that they are in the can be brought into the most favorable position for cleaning. This position will due to the distance and the position of the spray head (10) to the tank wall, tank lid (8) and tank bottom (11) intended, that is to be understood that for cleaning various Tanks the principle of the invention can be used, with the position of the sprayer may differ from that shown in Fig. 1 and in other cases the use one device is sufficient.

The agitator blade (12) driven by the motor (13), and the cooling tubes (14) are not the subject of the invention; they only serve better explanation of the principle of cleaning a collecting container.

Figures 2 and 3 or 4 and 5 show two according to the invention Versions of a spray head that can be used to generate a strong spray mist, which consists of particles of cleaning fluid.

As can be seen from Fig. 1, the cleaning liquid fills which is ejected from the spray head in a heavy mist and consists of small particles, the inside of the tank. These spray particles aim and hit the inside the tank walls, so that all tank surfaces are adequately wetted and the pollution is well soaked.

Shortly after the spray mist emerges from the spray head (10) one has the impression that the spray liquid is being ejected as a round jet. this happens in the direction of the tank walls to ensure complete exposure and wetting of all To obtain inner tank walls.

According to Fig. 3 it is illustrated how the cleaning solution exits the spray head at the upper opening (16) and at the lower opening (17).

The spray emerging from the upper opening (16) is something finer and consists of smaller droplets than the spray, the larger droplets and is discharged at the lower outlet (17). The stronger spray of Opening (17) covers the inner surfaces from approximately the top of the side walls all the way down to the bottom of the tank with most of the spray going out directed upwards leaves the opening (17) and by the weight of the droplets and its turbulence as well as the given acceleration becomes a complete exposure achieved the said tank surfaces. The finer spray of the upper opening (16) mainly paints the tank cap (8), other surfaces on the top Part of the tank and remaining parts of the upper side walls.

Experience has shown that earlier spray cleaning systems could leak of cleaning fluid on the upper tank cap can be observed what by the present invention has been substantially reduced.

It is to be understood that å each of the sprayers (1) and (2) and the associated spray heads are constructed in the same way, so that one detailed description of one device also applies to the other. Sprayer (2) consists of a tubular metal piece (18), at the end of which a Series of openings (19) are attached. Circular around the circumference of the tube (18) and each of the openings (19) is aligned with a recess (20) which is at a End has a continuous series of corrugations (21). A sleeve (22) encloses the end of the tube (18). This end of the tube meets the lower edge (23) the edge (24) of the sleeve (22). Screws (25) are for fastening the sleeve provided on the tube (18) for securing. An internally screwed shaft (26) goes from the inner edge (24) of the sleeve (22). The edge (24) contains a number of holes (27), which are arranged evenly around the shaft (26). The openings (27) are arranged so that the cleaning liquid that runs through the tube, if possible emerges evenly from the sleeve edge (24) around the shaft (26).

An end cap (28) is turned inside so (29) that the diameter that corresponds to the recess (30) in the sleeve (22) under the edge (24). The two Recesses (29) and (30) form a compensation chamber to ensure even outflow the liquid and conversion into a spray around the spray head (10) guarantee. The end cap (28) is fastened with a screw (31) which is guided through a hole in the bottom cap (32) into the shaft (26). One or several spacer washers (33) are between the shaft (26) and the inner bottom of the Chamber (29) placed on the end cap with due consideration the Position of the cap (28) in relation to the sleeve (22). This adjustability affects the Size of the opening of the annular gap (17) between the leading edge pointing downwards (34) and the upwardly directed edge (35). For example, at 1 (about 25 mm) outer diameter of the pipe (18), a bus opening (17) of about 0.02 " (about 0.51 wm) a strong 2 spray mist is generated at a pressure of about 2 Ep / ct2.

A bent piece (36), which is just running out, is with the Screw (31) held against the end cap. The angled piece (36) is reflective part of the cleaning solution exiting the opening (37) and down against z0B. the Bührerblatt (12) or, optionally, is sprayed onto its internals.

In Fig. 4 and 5 there is a modified version of a spray head shown, which is designed according to the principle of the invention. As shown, contains the spray head (38) has an upper outlet (39) and a lower outlet (40) for the Spray mist. The pipe section (18) has a number of openings (21) at one end and sits flush in the sleeve (41), held by a tensioned spring clip (15), its free end through appropriately provided holes in the sleeve (41) and tube (18) is performed. In the Ilülse (41) an insert (42) is attached to the the lower end has a stop (43) and terminates in a threaded shaft (44). The insert (42) contains a series of bores that penetrate into the interior of the sleeve (41) to lead.

A round end cap (45) with a raised edge (47) around the entire circumference is attached to the insert (42) by means of a seal and wing nut (46). By the raised edge (47) results in a compensation chamber (48), so that you get a uniform The cleaning fluid flows out through the tube (18), sleeve (41) and insert (42) into the chamber (48). It must be emphasized that the inside diameter of the chamber (48) is slightly larger - about 0.012 "(0.3 mm) - than the outer diameter (49) is at the end of the sleeve (41). Starting from the outer diameter (49) on the The circumference of the sleeve (41) and the tube (18) is a multi-angled, fluted (knurled) deflection surface (50), which are arranged endlessly on the lower outlet (40) shows. When the liquid is at the spray head (38) at the lower gap (40) between the inner diameter of the edge (47) and outer diameter (49) emerges, in the vertical direction against the deflecting surface (50), thereby atomizing the emerging from the opening (40) Beam into small particles, as clearly shown in Fig. 5, causes. the The deflection surface (21) can be created simply by means of a spiral knurling at the end of the sleeve (41) with a edging tool, as it is usually used for knurling, can be obtained. This knurling results in an endless number of angles of incidence or impact of the upwardly directed jet of liquid emerging from the equalization chamber (48) comes. In an analogous manner, a knurled ring can be produced, which by the sleeve (41) is carried so that the ring can vibrate or rotate freely, on impact of the liquid from the lower outlet (40).

The finer spray that is ejected from the upper annular gap (39) is directed mainly to the upper surfaces. The combination of Gap (39) and gap (40) of the spray head it (38) acts in the same way as the upper one Outlet (16) and the lower (17) of the spray head (10), so that a round jet-like Loading of the tank surfaces is achieved analogously to Abbo 1.

Claims (6)

Claims nin device for spray cleaning of dirty inner surfaces of tanks or containers with a cleaning liquid, characterized in that the Device is attached within said tanks or containers and in the described Dispense a spray of the cleaning liquid onto the inner surface generated. 2. An apparatus according to claim 1, characterized in that it is depending on Feeding works alternately or continuously. 3. An apparatus according to claim 1 and 2, characterized in that it a feed tube, at the lower end of which a spray head is detachably attached, owns. 4. An apparatus according to claim 1 to 3, characterized in that the Spray head has narrowed outlets to generate a strong spray mist. 5. An apparatus according to claim 1 to 4, characterized in that it consists of the following parts: a) a feed tube with a series of indentations around the one outer end that protrudes into the tank or container described b) a round end cap, which is attached some distance from the pipe end, c) a raised edge that runs around the outer periphery of the end cap described, d) one round sleeve, the upper end of which is attached to the pipe described and the lower End carries the end cap, e) said sleeve, the upper edge of which with the tube the upper Forms an annular gap to generate the finer spray mist, f) a compensation chamber, formed by the lower end of said sleeve, said end cap and raised Edge to equalize and distribute the liquid flow 'g) a lower one Annular gap at one end of the compensation chamber described, formed by said Edge and lower end of the sleeve to create a strong spray. 6. A sprayer as described in claim 5, wherein the lower The end of the sleeve described ends with a slightly smaller outer diameter than that Inner diameter of the raised edge described and thus the lower annular gap is formed, whereby said sleeve has a corrugation on the outer periphery.