FR2500359A1 - MIXING MIXER APPARATUS FOR CONCRETES, MORTAR AND OTHER INERT MATERIALS FOR BUILDING WORKS - Google Patents

Abstract

A. MIXING MIXING EQUIPMENT, ESPECIALLY SUITABLE FOR CONCRETE, MORTARS AND OTHER MATERIALS. B. CHARACTERIZED IN THAT IT INCLUDES A CONTAINER 12 CAPABLE OF COLLECTING THE DIFFERENT MATERIALS TO BE MIXED, A GROUP 14 LOCATED INSIDE THE CONTAINER, A GROUP WHICH INCLUDES ONE OR MORE ELEMENTS 15, 16 HAVING A GIVEN SHAPE AND CAPABLE OF ' ACT ON MATERIALS AND DEVICES CAPABLE OF DETERMINING A RELATIVE ROTATION MOVEMENT BETWEEN THE GROUP AND THE CONTAINER. C. THE INVENTION CONCERNS MIXING MIXING APPARATUSES, PARTICULARLY INDICATED FOR CONCRETE, MORTARS AND OTHER MATERIALS.

Description

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  The subject of the present invention is a kneading mixer apparatus particularly relating to concretes, mortars and other inert materials intended for construction sites. There is a well-known tendency to send heavy trucks to construction sites

  suitable for the transport of preconstituted concrete in central

  concrete for which it is the task to proceed to their

  preparation, their dosage and their mixture.

  It is also known the use on the sites of machines designed for the preparation of small or medium quantities of product called "concrete mixers"

or "Concrete mixers".

  These are generally divided into two main groups: Concrete tankers with inversion of

  rotation, with automatic loading or not.

  - Concrete mixers with directional flow

tation.

  The essential particularity of concrete-

  The rotational inversion principle is that the vessel containing the products to be mixed must not be tilted for the unloading of the mixed concrete. By turning in a single direction around its horizontal axis, it causes,

  by means of a series of blades applied on the surface of

  do not tank, mixing the product. By a rotation

  milking, she unloads.

  The mentioned machine may, in addition, be equipped with devices for the determination of water

  and the mechanical loading of the product to be mixed.

  The second type of cement mixer mentioned,

  the most widely used, stands out above all by its

  simpler ception and therefore by its lower cost.

  This last type of concrete mixer,

  further details will be provided in the description

  tion below-essentially comprises a platform which serves as support for an arm which in turn serves as a support

to the tank.

  This arm can perform rotations, by

  compared to the platform, around a horizontal geometric axis

  tal and the tank can rotate around its own geometric axis

  perpendicular to the axis around which the arm rotates. A motor also supported by the platform actuates the tank (via appropriate transmission means) so as to rotate it about its axis. A steering wheel, manually operated, is

  designed to rotate the arm.

  The mixture of materials inside the tank is made using a series of blades applied to the same tank which perform the mixing

  materials during the rotation of the tank.

  This type of concrete mixer- as it will be

  explained later- has a number of disadvantages.

  A considerable disadvantage is that

  especially in the fact that the tank must rotate at a relatively low angular speed. Indeed, if the speed at which

  turn the tank should be higher and exceed a certain

  limit, the denser materials would be projected

  against the inner wall of the tank because of the central force

  trifuge and separated from other materials.

  Another remark concerns the very dry concrete mix commonly used for the preparation of

cobbled floors.

  This type of concrete is usually mixed manually because the concrete mixer does not succeed in

  amalgamate the different subjects in view of the number of

  the rotation of the tank and the low percentage

  of water necessary for the production of this concrete.

  The mixing mixer apparatus, object of the present invention eliminates the disadvantages that come

  to be presented, and allows other important benefits to be

  bearing, shown in the following description.

  It is essentially characterized by the fact that it comprises: a container capable of collecting the different materials to be mixed,

  - a group within the container

  neur, which includes one or more shaped and

  to act on materials and - devices capable of determining

  a relative rotational movement between the group and the

  coach. The conformation of the group is designed so as to determine - during the relative movement between the group and the container - the movement of the materials according to

  vertical components and horizontal components.

  To better illustrate the characteristics

  and the advantages of the apparatus according to the invention, it is de-

  hereinafter a concrete mixer of a known type and also, a

  embodiment of the mixing mixer apparatus con-

  form to the invention with reference to the drawings Seals in which: - Figure 1 shows a mixer of a

known type, elevation view.

  - Figure 2 shows a device in accordance

  me to the invention, seen in elevation and partly in section.

  - Figure 3 shows, -view in elevation,

  an essential part of the apparatus, in accordance with the

  FIG. 2, comprising a container - seen in section along a plane passing through the geometric axis - and a

  rotating group located inside the container.

  - Figure 4 shows the detail of the

Figure 3 seen in plan.

  - Figure 5 shows a detail that represents

feels a variant.

  The concrete mixer of a known type, illustrated in Figure 1 comprises a platform 1, which serves as a support for different parts of the installation which will be described below.

  An arm.2 is applied to the platform

  form so as to be able to perform- with respect to the platform

  rotates about a horizontal geometric axis indicated by the letter A A container 3 or "vessel" is supported by the arm 2 so as to be rotatable, relative to the arm, about its own geometric axis, indicated by the letter B. A steering wheel 4, manually operated by

  the attendant is provided to rotate the arm 2.

  This wheel can be secured to the arm,

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  but he can also transmit to him the movement through

  gears or other devices.

  To rotate (around the B axis)

  the tank 3, there is provided a motor 5, which, through the intermediary of

  re a belt 6, actuates a pulley 7. The latter is secured, via a shaft, a pinion which meshes with a ring gear 8, integral with the

tank 3.

  The motor 5 is integral with the platform

  1. Reference 9 relates to the protective booth

roies- motor.

  In general, filling

  is done manually through the hole 10.

  Both for loading materials that

  for their mixing, it is necessary to rotate beforehand

  ve 3 on its axis B with an inclination of 450 approximately.

  The mixing of materials is done at

  medium of a series of blades integral with the tank 3 which mala-

  materials during rotation on the B-axis of the

tank 3.

  The unloading of the finished product is done manually by reversing the tank 3 using the steering wheel 4 The mixer described above, of a known type (illustrated in Figure 1) has the disadvantages presented above and in particular that the tank 3 should be run at a rather reduced speed (in order to avoid the aforementioned drawbacks that would occur due to the centrifugal force) and the fact that the concrete mixer (as mentioned above also) is not suitable for

  not to the mixture of very dry concretes.

  The description below is for a

  embodiment of the apparatus according to the invention, in accordance with

in Figures 2, 3, 4 and 5.

  According to the invention, the apparatus

  illustrated by way of example in Figures 2, 3 and 4 -

  sees a platform or chassis 11, which supports the differences

  parts which will be described below.

  The apparatus comprises a container 12 to

  bucket (specially shaped) attached to the platform

  form 11 (in other words, it is attached to the platform

  form 1i) The container 12 is equipped in its lower part, with a filling orifice 13, closed by a

waterproof mouthpiece.

  Inside the container 12, and coaxially with respect to it, there is provided a rotating group, indicated as a whole by the numeral 14 (in the example, shown in FIGS. 2, 3 and 4), a body central 15 of conical or frustoconical shape and a conical helical element

16, integral with the body 15.

  The group 14 (consisting of the body 15 and the element 16 integral with each other) is integral with a shaft 17, supported by the platform 11 so as to be rotatable about its own geometric axis Z (which is the geometric axis of the conical body 15). In other words, the

  group 14 described above, can turn relative to the

  neur 12 and rotation occurs around the vertical geometric axis (which is also the geometric axis of the container 12). To rotate the group 14, there is provided a motor 22, fixed to the platform 11, which transmits the rotational movement to the group 14 by means of a pulley 18 (integral with the drive shaft), belts 19 and a pulley 20, integral with the shaft 17, in other words, of the group 14

  The apparatus according to the invention is also

  equipped with wheels 21 for the movements of the apparatus

in the field.

  The filling of the container 12 is done through the filler neck of the container (which is open in its upper part) so that the materials to be mixed are introduced into the container 12 from above.

as indicated by the arrow.F.

  To proceed with mixing, the group 14 is rotated (mixing unit) using the devices described above comprising the motor 22, the pulleys 18 and

  and the belts 19. The operation of the mala-

  Figures 2, 3 and 4 are substantially as follows.

  Assuming group 14 is rotated

  4o tion (while the container 12 remains at a standstill since

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  platform 11), the conical spiral-shaped element 16 sets in motion the mass of materials placed in

  12. The movement of materials is schematic

  shown in Figures 3 and 4 on which it is indi-

  by arrows. Indeed, the element 16, being of shape

  tapered or frustoconical and correctly tilted

  port to the vertical axis Z, determines the transport, ie the movement of materials to be mixed from bottom to top (as indicated by the arrows in Figure 3). The materials

  go back down according to the laws of gravity and reach

  in the lower part of container 12 for

  take this cycle again and so on.

  In this way, the materials arriving to amalgamate between them. The centrifugation of the materials is avoided because of the inclination of the propeller 16 with respect to the axis of rotation Z. In addition, the mixing is accentuated by the fact that (in accordance with the arrows shown in FIG. are subject, in addition to a push up,

  slow rotary motion (rotation around the geo-

metric Z).

The fact that masses in motion

  subject to the two movements which have just been

  (in particular, transport upwards and move-

  rotation) promotes the homogeneity of the product obtained and

  therefore better performance / time.

  It is thus obtained good results to which contributes the fact that the speed of rotation of the group 14 can be high and in any way better than those

a traditional concrete mixer.

  Once the job is done, the attendant unloads. In other words, the final product is removed from the container 12 by the intervention of an attendant who operates the opening of the stopper, which determines the exit of the product through the discharge port 13) The unloading of the product is facilitated by the shape of the helical element 16 which, during the unloading phase, functions almost like a blade which

  guide to the unloading neck 13 the mixed product.

  If you want to unload the product more quickly, it will be possible to reverse the

  rotary motion of the mixing unit 14.

  Among the possible variants, a case is particularly interesting. This is the one shown in FIG. 5 and, more specifically, a group, indicated as a whole by 14A, for determining the movements of the materials.

  to mix inside the container 12. This group 14A com-

  also takes a conical helical element 16A, secured to a body 15A. This is different from the one described more

15. Its shape is cylindrical.

  The conical helical elements can be continuous like the elements 15 and 15A described above

  and they can be also discontinuous. For example, for example

  ple, it is possible to provide, in place of an element con-

  tinu, a series of blades properly shaped to

  also determine the desired movements of the materials.

  The discharge port 13 may be equipped with an additional flow stopper

  to make the unloading operation easier by

  it has been repeatedly digested.

  It is also possible to provide other additional devices such as, for example,

  a gearmotor for the transmission of the movement,

  manual or mechanized feeders for filling the container

  12. It is possible to add some parts (faucets no-

  for the introduction and dosing of water and

tanks to hold water.

  The rotating element intended to act on the materials for their mixing, can be shaped into shape

  spiral or Archimedean screw, whose helix may be continuous

  naked or interrupted. The apparatus forming the subject of the invention, described

  above gives particularly favorable results.

  tageux while eliminating the disadvantages described above

traditional concrete mixers.

  In addition, because the container 12 is secured to the platform 11, it is possible to eliminate the arm which supports, in traditional concrete mixers, the tank so that the necessary maneuvers to rotate 4o (loading and unloading). ) are eliminated, which facilitates the

work of the preposter.

Claims (9)

  Mixing mixer apparatus, particulate   particularly suitable for concretes, mortars and other materials, characterized in that it comprises a container 12 capable of collecting the different materials to be mixed, a   group 14 located inside the container, a group that   takes one or more elements 15, 16 having a given form   able to act on materials, and   to determine a relative rotational movement between the group and the container, the conformation of the group 14 being such as to determine, during the relative rotational movement between the group 14 and the container 12, movements   materials in vertical components and composi- horizontal health.   Mixer mixer apparatus according to claim 1, characterized in that the group 14 comprises a central body 15 and a conical helical shaped element 16 correctly shaped so as to impart to the material both upward movement for which the materials come down again to rise again and so on - and a slow rotary motion around the axis geometric design of the conical propeller.   Mixing mixer apparatus according to claim 1, characterized in that group 14 comprises   a central body 15 and a discontinuous element consisting essen-   by a series of blades and vanes which follow each other along a conical propeller 16 having a shape correctly   shaped and intended for this purpose, so as to impress upon   both an upward movement - for which reason   these go down to go up again and so on-   and a slow rotary motion around the geometric axis of this conical propeller.   4- Mixing mixer device, according to   any one of claims 2 or 3, characterized in that   that the container 12 is secured to the platform 11 of the appli-   same as the group within the custodian is   rotatably held in relation to the platform   shape and therefore with respect to the container 12, around his own geometric axis.   - mixing mixer apparatus according to claim 4, characterized in that the container 12 is equipped in its lower part with a lateral orifice of   unloading to empty the container.   Mixing mixer apparatus according to claim 5, characterized in that the propeller element   conic, continuous or discontinuous is capable of discharging   the product obtained by mixing through the orifice Lateral unloading.   7- Mixer mixing device, according to   claim 4, characterized in that it comprises a   supported by the platform of the apparatus and   appropriate connections between the motor and the group,   for the transmission of the motor movement to the group.   8- Mixer mixing device, according to   any of claims 2 or 3, characterized in that   that the central body 15 has a conical shape.   9- Mixer mixing apparatus, according to   any one of claims 2 or 3, characterized in that   that the central body 15A has a cylindrical shape.   10- Mixer mixing apparatus, according to   any of claims 2 or 3, characterized in that   that the element capable of acting on the materials is realized   in the form of a spiral or an Archimedean screw.