DE1428381A1 - Suction device for liquid and foam - Google Patents

Description

Diving. W. Kr öse ι

'ί'Ί

Diethelm ft Co. A. -G. . Zurich, Switzerland).

Suction device for liquid and foam.

The so-called industrial vacuum cleaner, comprising a container and an associated motor-fan unit to have, may also be designed as a suction device for liquid to aspirate after washing and sweeping a Pussbodens the dirty water. 2s the laborious picking up of the floor can be omitted. In previously known suction devices of this type, a float closes a suction opening of the blower unit at a certain liquid level in order to prevent the liquid from entering the suction blower. When operating such suction devices, it has been shown that when sucking in cleaning liquid with soapy water

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809812/0455

containing or synthetic detergents in the container proportionately forms a lot of foam. However, the floats used so far only respond to the level of the liquid and take no account of the foam that is present. If there is a lot of foam, foam gets into the suction fan, what about pollution and corrosion of the same, as well as blockage of the exhaust ducts.

In the suction device according to the invention, the swimmer is used to remedy these inconveniences a passage opening closable in an insert part of the container. Furthermore, the float is built so lightly and arranged so that it floats on the foam that occurs. In addition, the suction air flow is in the container and passed through the passage opening so that it has the The float does not influence the filling of the container before the content of the nut is reached, but it does influence it when it is reached the dirt contents against the passage opening pulls and this closes. In this way it can be achieved that practically the entire contents of the container with liquid and / or foam can be filled without any risk of liquid or foam gets into the suction fan.

The drawing shows an exemplary embodiment of the subject matter of the invention.

Fig. 1 is an elevation view of _{a suction device with BADOR 101} NAU 809812/0455

- 2 -

partial vertical section along the line I-I of the Fig. 2, and

Fig. 2 is a horizontal section along the line. II-II of FIG. 1.

A motor-blower unit 2 of known design is placed on the container 1, which is designed as a boiler and in between there is a set plate 3, which is airtight all around between container 1 and unit 2 is being held. A passage opening 4 is eccentrically present on the insert plate 3, which is passed through an on the Underside dos plate 3 attached rubber ring 5 is limited with a conical inner surface. Via the passage opening 4 extends away a metal bracket 6, which is supported on the top of the insert plate 3 and to which a rod 8 is attached at one end by means of nuts 7. The other end of the rod 8 passes through a hole in a part 9 of a wire frame 10 attached to the insert plate 3 and is counteracted by a wing nut 11 this part is releasably clamped.

A guide disk 12 is placed on the rod 8, which with the underside against a deposition of the Rod 8 rests and is influenced by a compression spring 13 at the top. The guide disk 12 has a conical Outer surface, which coincides with the conical inner surface of the Rubber ring 5 forms a conical passage. On the

BAD OhiäMAL _ ₃ _ 8 0 9 oil 2 / (K 5 5

Rod 8 is provided with a central bore Float 14 slidably guided. This float is made of foam of certain spec. Weight and is therefore so light that it can also float on light foam 16 formed over the liquid 15. As from Pig, 2 can be seen, the frame 10 has at one Place the circumference on a recess 17 in which the over the inner wall of the container 1 protruding inward Part of an intake port 18 can occur. The frame 10 can therefore only be inserted into the container in this rotational position 1 can be used. The rod 8 with the float 14 and the passage opening 4 is opposite the recess 17 in the direction of the outlet opening of the intake port 18, or in the direction of rotation of the air flow, as can be seen, arranged at an angle of more than 270 °. On the frame 10 is a guide plate 19 is also attached, which serves to control the clockwise suction air flow in the container 1 distracting from the float 14.

Y / enn when sucking in liquid through the anti}

In the suction port 18 · there is still a little liquid and foam in the container 1, the float 14 is lying as it was

r ~ indicated by dashed lines on the part 9 of the frame 10, oo

^ as the suction air flow through the staggered arrangement of the

Air passage and through the baffle 19, as well as the

conical design of the passage between the guide disk BAD ORKäfNAU.2 and the rubber ring 5 is guided in such a way that it is in this

Position of the float 14 does not act on the same. As soon as the level of liquid and / or foam reaches a certain level, the float 14 floats and is raised, as in Pig. I is shown in solid lines . When the useful volume ^{1 of} the container is reached, the float 14 reaches the area of the funnel-shaped suction air flow formed by the aforementioned conical passage. The float 14 is now quickly attracted by this air flow and pressed against the rubber ring 5. This closes the suction opening 4 , so that there is no longer any negative pressure in the container 1 and no more liquid and foam are sucked in.

During the rapid closing movement of the float 14, it took the guide disk 12 upwards against the action of the spring 13 , so that after the motor-blower assembly started, the guide disk is moved back by the action of the spring 13 and the float is lifted off the rubber ring 5 becomes and falls behind.

" ⁵ " 809812/0455

Claims (6)

Claimsί fl.) Suction device for liquid and foam with a container and associated motor-blower unit and a float to shut off the suction air flow, characterized in that the float (14) has a through opening (4) in an insert part (3) of the container (1) it can be closed that the float (14) is so lightly built and arranged in such a way that it also floats on the occurring foam, and that the suction air flow in the container (1) and through the passage opening (4) so that it hits the float (14) when pulling of the container (1) does not affect it before the useful content is reached, but it does affect it when the useful content is reached pulls against the passage opening (4) and closes it. 2. Suction device according to claim 1, characterized in that the float (14) consists of foam and is guided displaceably with a central bore on a rod (8). 3. Suction device according to claim 1 and 2, characterized in that a guide disc (12) on the rod (8) is arranged, which is connected to a passage opening (4) arranged Hing (5) made of elastic material a con- - 6 -BAD ORIGINAL 809812/0455 i large passage for the formation of a funnel-shaped suction air flow results. 4. Suction device according to claim 1, 2 and 3 _f, characterized in that the guide disc (12) on the rod (8) is displaceable against the spring action, in such a way that it is taken along during the closing movement of the float (14) by this to at The flow of suction air stops the float (14) by spring action from the passage opening (4). take off. 5. Sucking device according to claim 1, 2 and 3> characterized in that the rod (8) with the guide disk (12) arranged thereon is detachable from the passage opening (4) having insert part (3) is attached. 6. Suction device according to claim 1, 2 and 3 »characterized in that the rod (8) with float (14) and The passage opening (4) in the container (1) is arranged eccentrically and at an angle of more than 270 ° in the direction of rotation of the air flow in relation to the suction nozzle (18) present on the container (1) is arranged offset. 7. Suction device according to claim 1, 2 and 3, characterized in that a guide surface (19) is provided, which serves to divert the suction air flow from the float (14). 7- 609812/0 ^ 55