DE69917794T2 - CONTINUOUS MIXING SYSTEM - Google Patents

Description

The The present invention relates to a continuous mixing plant and here especially on a continuous mixing plant suitable is for continuous production of concrete during a short period of time simply by, for example, continuously feeding the required material during this is measured and the material falls by the gravitational force.

conventional Weise is a dosing system, which is a plant for the production of Concrete is a means of mixing cement, water, sand, coarse sand, mixed additives and the like for the material of the concrete, which is in a predetermined mixture for Preparation of the concrete is weighed, which in non-solid state and is widely used in dam constructions, Building constructions, fresh concrete plants, secondary concrete plants and the like.

The conventional dosing system is roughly composed of a material container part, a measuring part, a kneading part, and a loading part. The metering systems are classified into various types in accordance with these arrangements. The most typical system is of a tower type, as in 11 shown. The conventional dosing system of tower type, which in 11 is shown is a system in which an acceptance chamber 2 , a stock of materials 3 , (a cement container 3a , a sand container 3b , a container for small stones 3c , a water tank 3d ), a measuring part 4 , (a cement measuring vessel 4a , a sand measuring vessel 4b , a vessel for measuring small stones 4c ), a concrete mixer 5 , a concrete funnel 6 , and the like, are covered in turn from above in a tower-like shape. A type in which a company chamber 7 from a measuring or mixing chamber 8th Takes out and a type in which a working chamber is separated from the plant, are common.

So almost all of the conventional dosing systems, including the in 11 The type of discontinuous sequencer (The process of mixing and repeating a predetermined amount of materials each time, and repeating this). Therefore, a mixer for measuring and reciprocating the material on each round is called a batch mixer.

However, the production of the concrete in such a discontinuous process is intermittent and such a process is not so efficient as to produce a large amount of concrete continuously. For this reason, in the conventional tower-type metering 1 , as in 11 shown in the mixing chamber 8th two concrete mixers 5 and these are alternately in use to maintain as far as possible the continuity or continuity of the concrete production.

Even in discontinuous processes, when the majority of concrete mixers 5 As described above and used in order, it is possible to maintain the continuous production reasonably. However, it is a problem that the larger the number of built-in mixing machines S, the metering equipment as a whole will become larger.

It is by the way required to carry out the production of concrete in this way continuously. It However, it is very difficult to continuously optimally process the materials to mix.

The Japanese patents JP 10286449 and JP 092534670 The intention is to provide a kneading device which kneads efficiently and mechanically kneading materials by passing the materials to be kneaded through the deformed passages by the free fall resulting from their own weight, in their cross-sections along the longitudinal direction are gradually changed. In this case, two or more inlet parts of rectangular shape with one or two partitions are placed side by side at the inlet end side and at the outlet end side two or more outlet parts of rectangular shape with at least one or more partitions are juxtaposed. The associated inlet parts and the associated outlet parts are connected to the deformed passages, which change their cross-sections in a continuous longitudinal direction.

The document EP 0796650 shows a mixing apparatus for mixing materials having flowability, comprising: a plant body including a plurality of non-uniform passages having their profile shapes gradually changing in the longitudinal direction; and material supply means connected to an inlet side of the plant body for feeding the mixed material into the respective non-uniform passages by pressurizing, wherein the inlets of the non-uniform passages having a certain arrangement pattern are formed at the inlet side edge part of the plant body, and the outlets the non-uniform passages are formed in a different arrangement pattern, different from the arrangement pattern of the inlets, at an outlet side edge portion of the plant body.

The above-mentioned prior art devices still need to be improved. An An sentence is shown in document WO 00/13778. With respect to the present invention, WO 00/13778 is a document according to Art. 54 (3) EPC. It discloses a kneading machine for kneading an object material by passing it from an inlet opening to an outlet opening of each of a plurality of nonuniform passageways having a varying cross section, comprising: a kneading machine body having a feed opening for feeding the object material at one end and a discharge port at the other end and having a plurality of nonuniform passages communicating with the supply port and the discharge port, and material supply means for supplying the object material to the kneader body, each nonuniform passage of the kneader body gradually moving from its cross section Inlet opening to the outlet opening changes, mixing and dividing means, which are provided between the inlet and outlet openings of each non-uniform passage, for mixing and dividing the object material, which flows through each non-uniform passage mt, wherein the direction of each nonuniform passage is changed with respect to the other nonuniform passage to exclude straight passage from the inlet port to the outlet port, and an outlet port of the kneading machine body whose diameter is smaller than the diameter of the supply port.

It However, there is still a problem, like the amount of each Material that is continuously fed into the blender, is measured to produce a high quality concrete. Also in consideration This point will make it impossible considers the successful continuous production of concrete perform.

Around the above-described problems inherent in the prior art, to deal with is It is an object of the present invention a continuous mixing plant to disposal to provide, for example, simply continuously the materials needed supplies, while the amount of these is measured and these materials by means of gravitational force fall so that the mixed material continuously over one reasonable short period of time can be made, and in the case where the mixed material is concrete it possible higher quality Concrete over a short period of time to produce, as long as each material is continuous accurately measured and fed to the mixing machine.

DISCLOSURE THE INVENTION

The The present invention relates to a continuous mixing plant.

Around To solve the problems described above, the invention will be like follows reasonably. Namely, according to the present Invention provided a continuous mixing plant with continuous measuring and feeding means for continuous feeding of at least two types of materials that are mixed together should, while The materials are measured continuously, with the number of continuous measuring and feeding means the number corresponding to the materials is, and at least a mixing box unit for mixing the materials continuously supplied by the continuous measuring and feeding means, characterized in that the mixing box unit provided is provided with: a plurality of modified passes, from each having an inlet part at one end and an outlet part at the other end, whose cross-sectional shape is continuously from the inlet part is changed to the outlet part and in the axial Extend direction; and between the inlet and outlet parts of each modified passage, mixing and sub-means are provided are for mixing and splitting every material that is every one of modified passages happens, and where each material to be mixed continuously from the inlet part is poured out and to the outlet part by each the modified passages due to the gravitational force happens, the mixing box unit has a plurality of elements that include at least elements two ways to change the state of communication between each inlet and to distinguish each outlet from each of the modified passageways, and the Mixed box unit is formed by the different types of Elements are mutually connected.

In the continuous mixing plant according to the present invention it is preferable that the system further includes a measuring means, that for locally measuring a delivery quantity and - every predetermined time in the Means - to continuous supply of the material that serves each of the continuous measuring and feeding means supplied is, and that the continuous measuring and feeding means received a signal from this measuring device to respond by feedback being controlled, the accuracy of the material provisioning quantity is improved.

In such a continuous mixing plant, the two materials which are at least mixed are an aggregate and mortar or cement and the mixing plant is laid out as a plant for the continuous production of concrete. Within the continuous mixing plant described above, the following structure can be further adopted. Namely, a continuous mixing plant is provided which is a main conveyor belt unit for delivering an aggregate comprises; continuous aggregate supply means for continuously supplying at least one type of aggregate to the main conveyor belt unit while the material is being measured; a first detection unit installed downstream of a conveyor belt of the main conveyor unit for continuously measuring a local amount of the additive transferred on the conveyor belt of the main conveyor unit at a predetermined position, thereby outputting a signal; continuous fixed amount providing means installed downstream of the main conveyor belt unit having supplied the aggregate for continuously continuously feeding a fixed amount of mortar or cement to the main conveyor belt unit; wherein at least one mixing box unit is disposed directly below a conveying end of the main conveyor belt unit, characterized in that the continuous solidifying providing means receives the signal continuously output from the first detecting unit and is controlled by feedback to the accuracy of the supply amount of mortar or cement and further that the mixing box is provided with a plurality of modified passages each having an inlet part at one end and an outlet part at the other end extending in the axial direction and having their cross-sectional shape continuously from the inlet part the outlet part is changed; and mixing and dividing means are provided between the inlet and outlet portions of each modified passage for mixing and dividing concrete flowing through each of the modified passageways and being poured through the inlet portion and flowing toward the outlet portion through each of the modified ones Passages, mixed by the gravitational force.

Although the continuous mixing plant according to the present invention comprises the above-described necessary structural elements, it is possible to justify the invention even if the structural elements are particularly as follows. The continuous material delivery unit contains:
A conveyor belt unit for supplying the aggregate to the main conveyor belt unit; a material conveying unit for continuously feeding the aggregate to the conveyor belt unit; and a second detection unit installed downstream of the conveyor belt unit for outputting a signal by continuously measuring, at a predetermined position, an amount of the additive transferred on the conveyor belt of the conveyor belt unit, the material supply unit receiving the continuous signal which is output from the second detection unit, is controlled by feedback to thereby improve the accuracy of the supply amount of the additive, which is supplied to the conveyor belt unit and supplied.

Also is the continuous mixing plant according to the present invention, characterized in that the material supply unit includes a vibratory feeder, and the frequency of the vibration feeder based on the signal received continuously from the second detection unit is issued to by feedback to control the delivery quantity of the aggregate to the conveyor belt unit, changed becomes.

Farther is the continuous mixing plant according to the present invention characterized in that one or both of the first and second Detection units from a conveyor belt measuring unit which is designed to continuously measure the weight of the conveyor belt and the aggregate thereon at a predetermined position serves.

Farther is the continuous mixing plant according to the present invention characterized in that the mixing box unit by connecting a A plurality of elements formed in a substantially vertical direction with each of the elements having an inlet end, an outlet end and a plurality of modified passes provided is, which extend from the inlet to the outlet, and wherein the inlet of each of the modified ones formed at the inlet end crossings and the outlet of each of the modified ones formed at the outlet end crossings have different arrangement patterns, and further adjacent ones Elements in direct contact with each other at the outlet end and the Inlet end are connected, and a connecting part between the Inlet and outlet of each of the modified passageways at the end portion the connection side of each of the elements, the mixing and dividing means forms.

Incidentally, in the continuous mixing apparatus according to the present invention, it is preferable that the members are provided with rectangular openings provided on the right and left sides as an arrangement pattern of the inlet of the modified passageways, and provided with rectangular openings which are vertically arranged as an arrangement pattern of the outlet of the modified passages and which are formed by at least two ways to distinguish the communication state between each inlet and each outlet of each of the modified passages, and the mixing box unit is formed by the different Types of elements alternately connected to each other in the vertical direction become.

In the continuous mixing plant according to the present invention It is preferable that an openable / closable opening lock is provided at the outlet of the lowest element that the Mixbox unit forms, and an outlet of material, the falls through the gravitational force, is regulated, with a control of the filling rate of the material in the modified passages is performed by each element of the mixing box unit.

In the thus structured continuous mixing plant according to the present invention Invention, each material is continuously from the continuous Supply means supplied while it is measured and caused to fall into the mixing box unit. Namely, if every material continuously in the multitude of modified passages poured out on the inside of the inlet end above the Mixing box unit, the material becomes of the gravitational force caused by any modified passage to fall.

Everyone modified passage has a cross-sectional shape that extends along its longitudinal direction changes. The Material that will fall through this modified passage subjected to a compressive effect and mixed. In addition, will the material flowing through each modified passageway thereby mixed it together during that a case through this modified passage through the mixing and Parting agent flows. Then the material is divided into each modified passage (Division) and falls. This is preferably repeated to allow thorough mixing receive.

In such a mixing box unit is generally a variety of Elements connected together to overlap in the vertical direction, and so a partial and mixed effect can inevitably be achieved become. The element is provided with an inlet end, an outlet end and a plurality of modified passageways from the inlet end to the outlet end. The arrangement pattern of the inlet of each modified passage, the is formed in the inlet end, is different from the arrangement pattern the outlet of each modified passage formed in the outlet end is.

If the elements in close contact with each other at the outlet and at the inlet end the adjacent elements are connected, forms the connecting part the inlet and outlet of each of the modified passages the Mixed and part means. Furthermore, in the case where the element is used, in which the rectangular openings on the right and left as an arrangement pattern of the inlet of the modified ones crossings are arranged, and the rectangular openings vertically as an arrangement pattern the outlet are arranged, if finally two types of elements, the one different communication state between each Inlet and each outlet of each of the modified passages, are set up and the different types of elements in vertical direction are alternately connected to the mixing box unit The rectilinear connector is from the upper inlet end shortened or deleted to the lower outlet end of the mixing box unit, whereby the mixing effect of the falling material is improved.

In in the case where the element is used, in which the rectangular openings right and left as an arrangement pattern of the inlet of the modified crossings are arranged, and the rectangular openings vertically as an arrangement pattern the outlet are arranged, if finally two types of elements, the one different communication state between each Inlet and each outlet of each of the modified passages, are set up and the different types of elements in vertical direction are alternately connected to the mixing box unit to build; Furthermore is the straight-line connector from the upper inlet end to the lower one The outlet end of the mixing box unit is shortened or deleted, whereby the mixing effect of the falling material is improved.

To the Example, this continuous mixing plant as a plant used for the production of concrete. In this case it is special preferable to get a high quality concrete that the provisioning amount of aggregate coming from the material supply unit containing the continuous additive supply means forms, is supplied is determined by the detection unit to the feedback control to perform to improve the accuracy of the provisioning quantity. alternatively, it is in the case where at least one kind of aggregate is in the mixing box through the main conveyor belt unit supplied It is preferable that the amount of aggregate used by the Main conveyor belt unit fed continuously is determined on the instruction of the detection unit to the mortar or to supply cement from the fixed amount supply unit to the main belt unit.

SHORT EXPLANATION OF DRAWINGS

1 is a schematic representation of a continuous concrete manufacturing plant according to an embodiment of the present invention.

2 is a partially incomplete vor a unit for measuring and feeding mortar or cement to a second main conveyor unit in the plant for the continuous production of concrete in 1 ,

3 is a perspective that represents a manifestation in which two different types of elements are connected together to form a mixing box unit that is used in the plant for the continuous production of concrete such as in 1 is used.

4 is a procedural representation that, like a pattern diagram, shows an intermediate part, an outlet end part of each element and alternate manifestations of the cross sections in the event that two elements, as in 3 shown connected to each other at an inlet end portion.

5 FIG. 12 is a plan view schematically illustrating each modified passage inside a sort of the elements incorporated in FIG 3 shown as viewed from the inlet end portion.

6 FIG. 12 is a plan view schematically illustrating each modified passage in the interior of the other kind of elements incorporated in FIG 3 shown as viewed from the inlet end portion.

7 Fig. 12 is a perspective illustrating the element, that is, an element from another mixing box unit internally provided with 4 modified passages for use in the continuous concrete manufacturing plant according to the present invention.

8th is a process diagram which, like a pattern diagram, shows an intermediate part, an outlet end part of each element, and changing appearances of the cross sections in the case where the two elements that are in 7 are connected to each other at an inlet end portion.

9 is a schematic representation of another embodiment of a continuous concrete manufacturing plant according to an embodiment of the present invention seen from above.

10 is a schematic representation of another other continuous concrete manufacturing plant according to an embodiment of the present invention.

11 Fig. 3 is a schematic view showing a batcher-type dosing apparatus.

BEST TYPE, THE INVENTION TO REALIZE

A continuous mixing plant according to the present invention will now be described with reference to the embodiment shown in the drawings. 1 is a schematic representation of a continuous concrete manufacturing plant according to an embodiment of the present invention. 2 Figure 4 is a partial, fragmentary front view of a continuous solids delivery unit for supplying grout or cement to a main conveyor belt unit.

Also 3 is a perspective that represents a manifestation in which two different types of elements are connected together to form a mixing box unit that is used in the plant for the continuous production of concrete such as in 1 is used. 4 Fig. 12 is a process view showing, like a pattern diagram, an intermediate part, an outlet end part of each element, and alternate appearances of the cross sections in the case where two members are connected to each other at an inlet end part.

Furthermore is 5 Fig. 12 is a plan view schematically illustrating each modified passage inside a sort of the elements as viewed from the inlet end part. 6 Fig. 12 is a plan view schematically illustrating each modified passage inside the other kind of elements as viewed from the inlet end part. 7 Fig. 12 is a perspective illustrating the element, that is, an element from another mixing box unit internally provided with 4 modified passages for use in the continuous concrete manufacturing plant according to the present invention.

8th is a process diagram which, like a pattern diagram, shows an intermediate part, an outlet end part of each element, and changing appearances of the cross sections in the case where the two elements that are in 7 are connected to each other at an inlet end portion. 9 is a schematic representation of another embodiment of a continuous concrete manufacturing plant according to an embodiment of the present invention seen from above. 10 is a schematic representation of another other continuous concrete manufacturing plant according to an embodiment of the present invention. 11 Fig. 3 is a schematic view showing a batcher-type dosing apparatus.

The continuous concrete production plant 10 According to this embodiment, a first main conveyor belt unit includes 11 which is inclined and a second main conveyor unit 12 , the is set up horizontally. These two main conveyor units 11 and 12 are adjusted to a continuous feed of the material in a ride-on manner.

In the first main conveyor unit 11 , are the units 13 . 14 and 15 as 3 continuous aggregate supply means for continuously feeding three kinds of materials continuously while being measured, in the feeding direction of the main conveyor belt unit 11 established. As the continuous aggregate-ready units 13 to 15 are essentially the same, one of them is described.

The continuous aggregate delivery unit 13 is with a conveyor belt unit 13a Mistake. A vibratory feeder 13b as a unit for feeding the material is at the inlet end of this conveyor belt unit 13a Installed. Furthermore, a filling shaft 13c for feeding the aggregate to the feeder 13b above the vibratory feeder 13b provided. A conveyor belt measuring unit 13d for measuring the local weight of the feed belt, which moves continuously to transport the aggregate, is the vibratory feeder 13b downstream in the conveyor belt unit 13a Installed.

This conveyor belt measuring unit 13d is adapted to detect the local weight of the feed belt which moves and transports the aggregate by means of a load cell (not shown) and at the same time to output an electrical signal to a control unit (not shown). The control unit continuously calculates a weight value from the signal detected and output from the load cell, and calculates the amount of aggregate that is continuously supplied, for example, every few minutes by multiplying the weight value by the speed of the feed belt.

When the supply amount of the additive is larger or smaller than a predetermined amount, the operating frequency of the vibration feeder becomes 13b varies by the control unit to change its frequency, after which the amount of aggregate to be supplied, that is, the supply amount thereof, is reported back and controlled. The three types of aggregates, such as two different sizes of small stones, sand, etc., become the first major conveyor belt unit in turn 11 supplied from the three aggregate supply units 13 to 15 while controlling the predetermined provision amount per unit time thereof.

If the three types of material, in turn, in a layered state on the feed belt of the first main conveyor belt unit 11 supplied and transported to the second main conveyor belt unit 12 , which is installed horizontally, transferred and moved to its delivery outlet, is from a unit 16 Installed in the center, mortar or cement is continuously applied to the feed belt for continuously feeding a predetermined amount of the mortar.

As in 2 In more detail, this is the continuous solid-volume delivery unit 16 with a snail 16b provided rotatably inside a sleeve-like housing 16a is arranged. This snail 16b is from a drive motor 16d standing on a base plate 16c attached, powered. A hopper 16e is over an end part of the housing 16a provided. An outlet part on the underside is connected to a casting opening in the housing 16a is formed.

So the mortar or cement that is in the hopper 16e has been introduced through the casting opening of the housing 16a introduced into the interior, by means of the rotating screw 16b through the housing 16a pressed and through a feed tube 16f applied to the feed belt. When feeding the cement or mortar is a conveyor belt measuring unit 17 installed upstream of the delivery port of the delivery tube 16f in order to preferably continuously feed a larger amount of the mortar or cement in proportion to the total amount of the three types of aggregates supplied from the feeding belt.

Because this conveyor measuring unit 17 essentially the conveyor belt measuring unit described above 13d is similar, except for an explanation of their structure. In operation, however, the unit is set to match the local weight of the feed belt, which is the three types of aggregate in the second main belt unit 12 moved and transported by means of a load cell (not shown) of the conveyor belt measuring unit 17 detected, and an electrical signal to a control unit 18 outputs.

The control unit 18 For example, continuously calculates the total provision amount of the three types of aggregates per unit time from the signals detected and output from the load cell, and calculates a more accurate supply amount of mortar per unit time from this calculation result. Then, in response to the total supply amount of aggregates per unit time, the control unit changes 18 the speed of the drive motor 16d about the speed of rotation of the screw 16b to thereby control the provision of the mortar or cement.

Even if the entire deployment amount per unit time of the three types of aggregates that are on the feed belt in the second main conveyor belt unit 12 is changed (that is, even in the case where the amount of the aggregates on the feed belt has increased or decreased), it is possible to obtain the appropriate amount of mortar or cement for the total supply amount of the aggregates on the feed belt under the Outlet part of the feed tube 16f passes, giving up. As a result, the quality of the concrete produced is improved.

A mixing box unit 20 is just below the feeding end of the second main conveyor unit 12 Installed. A total of six of the two types of elements 21A and 21B are basically with each other in the vertical direction in this mixing box unit 20 connected. For the sake of explanation, a state is shown in which these two types of elements 21A and 21B connected to each other.

The special structure of each element 21A and 21B will now be described. First is one of the elements 21A provided at both ends with angular end portions and at the end portions flanges F are formed to connect the elements together.

A plurality of bolt holes f1 are formed in these flanges F. The adjacent elements are bolted together at their ends and joined together through the use of the bolt holes f. The element 21A is with two modified passages 22 . 23 equipped, which are arranged in parallel in the same direction. A partition 24 is formed in the middle part to the longitudinal openings on the right and left sides at an end part of this element 21A train.

These right and left longitudinal openings are Einlassteile 22a . 23a the two modified passages 22 respectively 23 , A partition 25 is in the middle of the other end part of the element 21A provided to form the horizontally extending openings on the top and bottom sides. The horizontally extending upper and lower openings are to the two modified passageways 22 . 23 associated outlet parts 22b and 23b , And that is the dividing wall 24 at the inlet end part of the element 21A and the partition 25 at the outlet end part of the element 21A offset from each other by 90 degrees.

Accordingly, in the arrangement pattern, the two inlets 22A . 23A the modified passages 22 and 23 the rectangular openings on the right and left sides are formed in parallel, whereas in the arrangement pattern of the two outlets 22B . 23B the rectangular openings are formed in parallel on the upper and lower sides. The exact shape of the modified passages 22 . 23 will be described later. The associated modified passages 22 . 23 are arranged with their respective cross-sectional shapes so as to be continuous from the inlets 22a . 23a to the outlets 22b . 23b change.

In the state of change is each of the modified passages 22 . 23 constant at each point in its cross-sectional area, only the shape of the cross section changes from the inlets 22a . 23a to the outlets 22b . 23b , And indeed, the inlets have 22a . 23a a rectangular shape along the X direction, the shape of the cross section forms a square in the middle between the inlets 22a . 23a and the outlets 22b . 23b , and the outlets 22b . 23b have a rectangular shape along the Y-direction, which is perpendicular to the X-direction (see 3 ). Then the length of the modified passage 22 . 23 constant.

Consequently, the object material passing through the associated modified passageways 22 . 23 to flow in the cross section gradually changed from the rectangular shape along the X-direction in the square shape and further gradually in the rectangular shape along the Y-direction. In this element 21A , as in 3 shown, communicate the inlet 22a which is on the left side and the outlet 22b which is located on top of each other via the modified passageway 22 while the inlet 23a which is on the right side and the outlet 23b , which is located on the bottom, with each other through the modified passage 23 communicate.

Next has the other kind of element 21B the same arrangement as that of the above-described element 21A , However, communicate in this element 21B , as in 3 represented, an inlet 26a which is located on the left side and an outlet 26b which is located on the bottom, with each other via a modified passage 26 while an inlet 27a which is located on the right side and an outlet 27b which is located on top of each other through a modified passageway 27 communicate. And indeed, this element has 21B a different state of communication from the element 21A with its respective inlet and outlet of its respective modified passageway.

3 shows the state in which two such types of elements 21A and 21B connected to each other. And that is, in the two types of elements described above 21A and 21B , the inlet end part of the one element 21B with the outlet end portion of the other element 21A With the flanges F with each other via bolts in close connection.

Consequently, in the connection part, communication between the two types of elements 21A and 21B the outlet 22b of the modified passage 22 in the one element 21A with half of the inlet 26a of the modified passage 26 and half of the inlet 27a the other modified passage 27 in the other element 21B while the outlet 23b of the modified passage 23 in the one element 21A with the remaining half of the inlet 26a of the modified passage 26 and the remaining half of the inlet 27a the other modified passage 27 in the other element 21B communicated.

For this reason, each half of the object material to be mixed flows through each modified passageway 22 . 23 in the one element 21A has flowed through, one in each modified passage 26 . 27 of the other element 21B to be thoroughly mixed. However, with reference to the object material that has passed through a modified passage, it is distributed to each half of the two elements of the connection part.

As a result, each outlet and each inlet of each modified passage formed in the outlet end part and the inlet end part form the connecting part between the two elements 21A and 21B are, the mixing and dividing means of the object material. As in 1 As shown, the mixing and dividing means for the object material are formed in each connection part when the elements 21A and 21B connected to each other in series.

Aggregates and mortars coming from the second main conveyor unit 12 are moved from the feed end continuously into a hopper 19 poured. Aggregates and mortars are roughly mixed when coming from the second main conveyor belt unit 12 in the hopper 19 be poured. Under this condition, aggregates and mortar flow from the two Einlassteilen 22a . 23a in the first element 21A the mixing box unit 20 in every modified passage 22 . 23 by gravity into the mixing box unit 20 to fall.

The mixing process of the object material (aggregates and mortar) passing through the mixing box unit 20 flowing down, is now referring to 4 that describes the process. Incidentally, these process illustrations exemplify the changing state of the object material, that is, aggregates and mortars in the areas of the inlet end parts, the intermediate part, and the outlet end part of each element 21A . 21B in the case where the two elements 21A . 21B connected together (in two stages).

How out 4 it can be seen, the object material flows into the hopper 19 is supplied at the inlet end portion of the first stage element 21A in the two modified passages 22 . 23 and as a result, the flow is divided into the two A, B. The cross-sectional shape of each liquid object material thus divided has the shape of a rectangular shape along the X direction.

Then be in the intermediate part of the first stage, the cross-sectional shapes of liquid Object material A, B changed into square shapes. Furthermore, will be both forms into a rectangular shape along the Y direction to Rotated 90 degrees to the X direction, on the inlet side in the outlet end portion the first stage. As a result, the shape of the cross section of a every liquid Object material A, B changed from the rectangular shape along the X direction to the square shape and to the rectangular shape along the Y direction.

In this change process, the material is the continuous compression effect through the inner wall of each modified passageway 22 . 23 subjected. As a result, the phenomenon of continuous convection, especially in the radial cross-sectional direction, occurs in the liquid object material, thereby improving the primary kneading effect.

Then there is a partition 28 at the inlet end portion of the second step element 21B at right angles crosses with the partition 25 at the outlet end portion of the first step element as in 4 2, the object materials A and B emerging from the outlet end portion of the first step element 21A are divided into the right and left divided, respectively, are divided into A / B and A / B.

Then, the object materials A / B are caused to be in the corresponding modified passageways 26 respectively 27 to flow. Namely, parts of the object materials A, B become the inlet end part of the second step element 21B into the corresponding modified passages 26 . 27 and the shape of the cross section of the liquid object material within each passage is formed into a rectangular shape along the X direction.

Subsequently, in the intermediate part of the second stage, the shapes of the cross sections of the liquid object materials A / B are changed to a whole square shape, and the shape becomes Outlet end portion changed to the rectangular shape along the Y direction. Also in the second stage, the object material A / B is changed from the rectangular shape along the X direction by the square shape and the rectangular shape along the Y direction.

Then, in the change process, the material is the continuous compression effect through the inner surface of each modified passageway 26 . 27 subjected. As a result, the phenomenon of continuous convection, particularly in the radial cross-sectional direction, occurs in the liquid object material to thereby enhance the second kneading effect.

With respect to the third stage, although not shown in detail, at the inlet end portion of the third stage, the end object material is placed on the in 4 The second stage outlet end portion shown is divided into the right and left sides and mixed in A / B / A / B as shown by the phantom line X1. The object material in the subsequent stages is kneaded in the same manner as in the first and second stages.

Incidentally, in this embodiment, as described above, the two different types of the elements 21A and 21B alternately connected. The reason for this will now be explained. As each modified passage, the in 3 represented element 21A , is considered from the end part, in addition to the hatched parts, in 5 are shown, the parts viewed as straight through holes.

Because the inlet 22a on the left side of the inlet end part with the upper outlet 22b the outlet end portion communicates, and the inlet 23a on the right side of the inlet end portion with the lower outlet 23b communicates in the outlet end portion, as described above, it goes without saying that in the areas where these parts partially overlap, one can look through directly from the inlet to the outlet.

In this case, with respect to the passage part, which is present in the areas where the inlets 22a . 23a and the outlets 22b . 23b partially overlap, causing the liquid object material to flow with almost no deformation. Even then, when the variety of elements 21A , which have the same shape, is connected to each other, the state when the modified passage is viewed from the end part, not different from the state in 5 is shown. Accordingly, it is possible to predict the case where the kneading effect is not achieved even if the plurality of elements having the same shape are connected to each other.

On the other hand, in terms of the element 21B for the same reason as in the explanation for the element described above 21A , the areas where the inlets 26a . 27a and the outlets 26b . 27b overlap with each other, the parts except the hatched parts that are in 6 are shown.

This is obviously different from the element 21A because the inlet 26a on the left side of the inlet end portion with the lower outlet 26b the outlet end portion communicates and the inlet 27a on the right side of the inlet end portion with the upper outlet 27b communicates in the outlet end portion.

That is why it is possible to assume that these two types of elements 21A . 21B as in 3 shown connected to the state as if the 5 and 6 would be overlapped when viewing the modified passageways from the inlet end portion. As a result, it is impossible to see the outlet part directly from the inlet part. That is, the object material supplied from the inlet part would not flow, as it were, straight to the outlet part. As a result, it is possible to further improve the mixing effect.

Incidentally, the elements used in the above-described embodiment are two modified passes 22 . 23 or 26 . 27 Mistake. However, it is possible the mixing box unit by connecting the elements 30 to form the four modified passages 31 . 32 . 33 and 34 have, as in 7 shown.

The idea of this element 30 is the same as that of the element described above 21A . 21B , The element is also provided with angular openings at the end parts and connecting flanges around the openings. Furthermore, the inlet end part is by means of three partitions 35 . 36 . 37 divided to form four longitudinal openings in the X direction to inlets 31a . 32a . 33a , and 34a the four modified passages 31 to 34 to build.

On the other side is the outlet end part of the element 30 divided to have longitudinal openings in the Y-direction, which differ by 90 degrees from each inlet of the inlet end portion, by three partitions 38 . 39 . 40 is divided to outlets 31b . 32b . 33b , and 34b of each modified passage.

Then communicates, as in 7 represented, the inlet 31a of the modified passage 31 with the second outlet 31b from above, the inlet 32a of the modified passage 32 communicates with the top outlet 32b , the inlet 33a of the modified passage 33 communicates with the bottom outlet 33b and the inlet 34a of the modified passage 34 communicates with the third outlet 34b from above.

The change in the shape of the cross section in the longitudinal direction of each modified passage 31 . 32 . 33 . 34 is basically the same as the elements 21A . 21B in the previous embodiment. However, the distinguishing point is that there are four modified passages in the contour of the element 30 as a whole there.

The 8th Fig. 13 is a diagram showing a mixing method in which the mixing box unit is used by connecting the two elements 30 is formed with each other (by connecting the elements 30 which in this example have the same shape). If the object material passing through the inlets 31a to 34a has been filled, longitudinally in the X direction at the inlet end portion of the first step element 30 from the outlets 31b to 34b the object material is divided into B, A, D, C and each row is mixed in the state of 16 layers longitudinally in the X direction at the outlet end parts of the second step element 30 , Here, phantom lines X3 identify the next third dividing lines.

In this way, the appropriately measured amount of aggregate and mortar or cement is continuously added to the mixing box unit 20 fed in order to be adequately mixed, as a result of which a very high quality of concrete can be continuously produced. In the plant 10 For the continuous production of concrete according to the embodiment described above, the conveyor belt measuring units in order to produce a relatively high concrete quality, as described above, in the frame of the continuous material supply unit 13 to 15 installed, and continuously monitor the provisioning quantity of the object material and execute the feedback control. In the same way, the supply of the mortar is also set very accurately to be in proportion to the total amount of the object material that has been supplied. Such conveyor belt measuring units can be installed accordingly in response to the required quality of the concrete.

Incidentally, in the case where the material such as aggregates or mortar is caused by the mixing box unit 20 to flow, the material does not always flow during the filling of the modified passageway of each element. If object material does not flow through the modified passage of each element during the filling of the modified passageway, it is to be feared that the material will not be subjected to the thrust or compression during passage through the mixing box unit due to the different grades of materials. As a result, there is a possibility that a difference in the kneaded state occurs.

For this reason, it is preferable that an open / closeable opening lock (not shown) at the lowest element outlet of the mixing box unit 20 is provided and the discharge amount of the material falling by the gravitational force is adjusted to more effectively perform the kneading and mixing under the control of the filling rate of the material in the modified passage of each element of the mixing box unit.

A Amount (volume) of aggregates per unit time continuously supplied By, for example, the feeding belt or various well-known other means, with the exception of the conveyor belt measuring unit as one Means for adjusting a supply of aggregates and mortar or Cement, in turn, can be detected by the variety of photoelectric probes, or it is possible the provisioning amount on material by using a well known high precision feed conveyor unit to control.

Of Further, in the continuous mixing plant described above according to the embodiment loaded and transferred one or more types of materials, in turn on the supply conveyor of the main conveyor unit to cover. Furthermore, the last material is loaded on the feed belt after the Total amount of materials was determined, and these materials become poured into the mixing box unit. However, the present invention is not limited to this.

And indeed, for example, as in 9 shown, the continuous aggregate-Zuführeinheiten 13 . 14 . 15 and the continuous fixed amount providing means 16 for feeding mortar or cement independently to the hopper 19 provided in the upper part of the mixing box unit 20 is installed, and any material can continuously from each unit into the hopper 19 are poured while the material is being measured. Then a scale is in the delivery path of each of the continuous aggregate feed units 13 . 14 . 15 and the continuous fixed amount providing means 16 to the filling shaft 19 installed and the corresponding continuous aggregate feed units 13 . 14 . 15 and the continuous fixed amount providing means 16 are subjected to the feedback control, thereby improving the accuracy of the material supply as described above, if necessary.

In the embodiment of the above-described The present invention has also been explained, in which the aggregates and the mortar are mixed to the To manufacture concrete. However, the present invention is not on limited such materials. It is possible the aggregates and pour the cement into the mixing box unit while the materials are continuous supplied or measured.

In the embodiment described above the object material has been described by use of the term "aggregates". However, the "aggregates" that are needed here are not limited to species that, like sand or small stones, from each other independently are. And this is done by previously mixing sand and small Stones obtained material or the material that is obtained by further prior mixing of the cement powder to the sand or to the little stones or the mixture of them, a premix called. The "aggregates" also include the concept of such a premix. Accordingly, it is possible so pour a premix into the mixing box unit while the material is continuously measured and fed becomes.

Specifically, in the case where the masterbatch obtained by previously mixing the cement powder into the mixture of sand and small stones is poured into the mixing box unit while continuously measuring and feeding as shown in FIG 10 two mixing box units are provided step by step. Namely, the sand, which is the fine aggregate, the small stones, which is the coarse aggregate, and the cement powder continuously supplied by the measuring and providing units 113 . 114 . 115 and in the mixing box unit 20 mixed in the first stage to make the premix.

Subsequently, this premix is passed through a water supply unit 116 continuously supplied water and in the mixing box unit 20 added to the second stage. Even with such a process, it is possible to continuously produce the concrete. As can be understood from this, according to the present invention, it is possible to install the plurality of mixing box units in the stepwise manner as required, and to mix the materials while supplying each material in order.

by the way is the management of surface moisture coarse aggregate material or fine aggregate necessary in case in the concrete of high quality must be made, including the case in which the Water must be added to the premix described above. It is therefore desirable a water supply control unit or a humidity detecting means for the continuous one described above Mixing plant according to the present To add invention if necessary.

Otherwise, will the plant in the previous embodiment of the present invention Invention used for continuous production of the concrete. It works without running to have that the present invention can be applied in various cases in which any material that needs to be mixed is fed while it is measured and continuously mixed and moved to the To receive product. It is possible, exemplary to show that the production of compound feed for pets or garden soil (mixed soil of garden earth and chicken manure) possible is.

As It is described above in the continuous mixing plant according to the present invention Invention possible, the production of the mixed material in a relatively simple Apparatus and continuously and at a relatively high speed perform, thereby substantially the production efficiency of the mixed material As a result, it is possible to improve such a mixed material to produce in bulk.

In the continuous mixing plant, according to the present invention, it is also possible to do this with the continuous production of concrete. In In this case, measuring any material, which is conventional Type is difficult to carry out in the continuous production of the concrete, be carried out continuously with high accuracy and the material is fed to the mixing machine, which has a special structure. So there is the extraordinary Advantage that the concrete high quality at high speed continuously can be made.

INDUSTRIAL APPLICABILITY

The The present invention is applicable to a continuous mixing apparatus and moving several types of materials, for example, for mixing of cement and coarse aggregates in a concrete production plant or the like, mixing pet food or mixing soil and chicken manure for making garden soil.

Claims (10)

A continuous mixing plant with continuous measuring and feeding means for continuously feeding at least two kinds of materials to be mixed together while continuously measuring the materials, the number of continuous measuring and feeding means the number corresponding to the materials, and at least one mixing box unit for mixing the materials fed continuously from the continuous measuring and feeding means is characterized in that the mixing box unit is provided with: a plurality of modified passages each having an inlet part at one end and an outlet part at the other end, extending in the axial direction and continuously changing their cross-sectional shape from the inlet part to the outlet part; and mixing and dividing means are provided between the inlet and outlet portions of each modified passage for mixing and dividing each material passing through each of the modified passageways, and wherein each material to be mixed is continuously poured from the inlet portion and to the outlet portion passes through each of the modified passes due to the gravitational force; wherein the mixing box unit has a plurality of elements, the elements include at least two ways to distinguish the communication state between each inlet and each outlet of each of the modified passageways, and the mixing box unit is formed by mutually connecting the different types of the elements. The continuous mixing plant according to claim 1, characterized in that the system further comprises a measuring means includes, for locally measuring a delivery amount and - every predetermined time on average - to continuous supply of the material that serves each of the continuous measuring and feeding means supplied and that the continuous measuring and feeding means is on Signal from this measuring device received by controlled by feedback to whereby the accuracy of the material supply amount improves becomes. The continuous mixing plant according to claim 2, characterized in that the at least two to be mixed Materials are an aggregate and mortar, or cement, and the mixing plant as a plant for the continuous production of Concrete is used. The continuous mixing plant according to claim 1, wherein the continuous metering and delivery means include: a main conveyor unit to Supply of an aggregate; continuous aggregate feed for sustained feeding of at least one kind of aggregate to the main conveyor unit during the Material is measured; a first detection unit, the one conveyor belt the main conveyor unit is installed downstream, for continuously measuring a local amount of aggregate that is on the conveyor belt the main conveyor belt unit was transferred, at a predetermined position, with a signal is issued; continuous fixed amount providing means, that of the main conveyor belt unit installed downstream, which has supplied the aggregate, for continuously supplying a fixed amount of Mortar or Cement to the main conveyor unit; wherein at least one mixing box unit directly below a conveyor end the main conveyor belt unit is arranged, characterized in that the continuous Fixed quantity providing means receives the signal continuously from the first detection unit is output, and by feedback is controlled by the accuracy of the provisioning quantity mortar or to improve cement. The continuous mixing plant according to claim 4, characterized in that the continuous aggregate supply means include: a conveyor belt unit for feeding the aggregate to the main conveyor unit; a material shredding (cutting) unit for continuous feeding the aggregate to the conveyor belt unit; and a second detection unit downstream of the conveyor belt unit is installed to output a signal by at a predetermined Position a quantity of the aggregate that is on the conveyor belt the conveyor belt unit is transferred, is measured continuously, the material supply unit upon receipt of the continuous signal from the second detection unit is issued by feedback is checked to ensure the accuracy of the provisioning quantity the aggregate supplied to the conveyor belt unit and supplied becomes. The continuous mixing plant according to claim 5, characterized in that the material delivery unit a vibratory feeder contains and the frequency of the vibration feeder based on the signal, continuously output from the second detection unit is to return the feedback Control delivery quantity of the aggregate to the conveyor belt unit, changed becomes. The continuous mixing plant according to claim 6, characterized in that one or both of the first and second Detection units constructed from a conveyor belt measuring unit is used to continuously measure the weight of the conveyor belt and the aggregate thereon at a predetermined Position serves. The continuous mixing plant according to claim 7, characterized in that the mixing box unit is formed by connecting a plurality of elements in a substantially vertical direction, each of the elements having an inlet end, an outlet end and a plurality of modified passages extending from the inlet to the outlet, and wherein the inlet of each of the modified passageways formed at the inlet end and the outlet of each of the modified passageways formed at the outlet end have different arrangement patterns, and further adjacent ones Elements with direct contact to each other at the outlet end and the inlet end are connected, and a connecting part between the inlet and the outlet of each of the modified passages at the end part of the connecting side of each of the elements forms the mixing and dividing means. The continuous mixing plant according to claim 8, characterized in that the elements with rectangular openings to disposal placed on the right and left sides as an arrangement pattern the inlet of the modified passages are arranged, and with rectangular openings to disposal placed vertically as an arrangement pattern of the outlet the modified passages are arranged, and which are formed by at least two types, the communication state between each inlet and each outlet from each of the modified passages, and the Mixbox unit is made by different ways the elements alternately connected to each other in the vertical direction become. The continuous mixing plant according to claim 9, characterized in that an openable / closable opening lock is provided at the outlet of the lowest element that the Mixbox unit forms, and an outlet of material, the falls through the gravitational force, is regulated, with a control of the filling rate of the material in the modified passages is performed by each element of the mixing box unit.