BE1024893B1 - A MIXER FOR CONCRETE, CEMENT, MORTAR AND OTHER SUBSTANCES - Google Patents

Abstract

The present invention relates to a mixer for mixing liquid and semi-liquid substances such as in particular mortar, cement and / or concrete. The mixer comprises a mixing tub, mixing tool and a frame, wherein the mixing tub and mixing tool are aligned and supported by the frame such that the mixing efficiency is improved and the durability of the mixing tub and the mixing tool increases.

Description

(73) Holder (s):

Procédés et Brevets Industriels S.A. 2241, LUXEMBOURG Luxembourg (72) Inventor (s):

VANGAEVER Dries 8720 MARKEGEM Belgium (54) A MIXER FOR CONCRETE, CEMENT, MORTAR AND OTHER SUBSTANCES (57) The present invention relates to a mixer for mixing liquid and semi-liquid substances, such as in particular mortar, cement and / or concrete. The mixer includes a mixing tub, mixing tool and frame, with the mixing tub and mixing tool aligned and supported by the frame to improve mixing efficiency and increase the durability of the mixing tub and mixing tool.

BELGIAN INVENTION PATENT

FPS Economy, K.M.O., Self-employed & Energy

Publication number: 1024893 Filing number: BE2017 / 5247

Intellectual Property Office International classification: B28C 5/14 B01F 7/00 B01F 7/02 B01F 7/08 B01F 15/00 Date of issue: 07/08/2018

The Minister of Economy,

Having regard to the Paris Convention of 20 March 1883 for the Protection of Industrial Property;

Having regard to the Law of March 28, 1984 on inventive patents, Article 22, for patent applications filed before September 22, 2014;

Having regard to Title 1 Invention Patents of Book XI of the Economic Law Code, Article XI.24, for patent applications filed from September 22, 2014;

Having regard to the Royal Decree of 2 December 1986 on the filing, granting and maintenance of inventive patents, Article 28;

Having regard to the application for an invention patent received by the Intellectual Property Office on 07/04/2017.

Whereas for patent applications that fall within the scope of Title 1, Book XI, of the Code of Economic Law (hereinafter WER), in accordance with Article XI.19, § 4, second paragraph, of the WER, the granted patent will be limited. to the patent claims for which the novelty search report was prepared, when the patent application is the subject of a novelty search report indicating a lack of unity of invention as referred to in paragraph 1, and when the applicant does not limit his filing and does not file a divisional application in accordance with the search report.

Decision:

Article 1

Procédés et Brevets Industriels S.A., Rue Tony Neuman 4, 2241 LUXEMBOURG Luxembourg;

represented by

LAENEN Bart, Kempische Steenweg 542A, 3500, HASSELT;

a Belgian invention patent with a term of 20 years, subject to payment of the annual fees as referred to in Article XI.48, § 1 of the Economic Law Code, for: ONE MIXER

FOR CONCRETE, CEMENT, MORTAR AND OTHER SUBSTANCES.

INVENTOR (S):

CATCHER Dries, Oostrozebekestraat 30, 8720, MARKEGEM;

PRIORITY:

BREAKDOWN:

Split from basic application:

Filing date of the basic application:

Article 2. - This patent is granted without prior investigation into the patentability of the invention, without warranty of the Merit of the invention, nor of the accuracy of its description and at the risk of the applicant (s).

Brussels, 07/08/2018,

With special authorization:

-1BE2017 / 5247

A mixer for concrete, cement, mortar and other substances

TECHNICAL FIELD OF THE INVENTION

The present invention relates to a mixer for mixing liquid and semi-liquid substances, such as in particular mortar, cement and / or concrete. The mixer includes a mixing tub, mixing tool and frame, with the mixing tub and mixing tool aligned and supported by the frame to improve mixing efficiency and increase the durability of the mixing tub and mixing tool.

BACKGROUND OF THE INVENTION

Mixing buckets attached to loading machines, including for example a shovel, front loader, front loader or wheel loader, are widely used. According to the prior art, these mixing trays or mixers comprise an auger or screw arranged laterally in the longitudinal direction of the tray and more or less parallel to the bottom of the tray. The auger or screw may include blades or vanes that are often repeated the same shape and size along the length of the auger or screw. Furthermore, the auger or screw is often placed quite close to the bottom of the bucket and after use it is completely dirty and sticky due to remnants of the mixing material. Cleaning (usually with a high-pressure cleaner and water) of the mixing bowl is necessary rather quickly after use and is very time consuming. An improved way of cleaning or leaving less dirty tools after use would be very desirable, not only in terms of time use, but also in order to reduce the wear of the mixing tools. Particularly when mixing previously liquid substances, the mixture generally tends to creep upwards, resulting in a less efficient mixing result and the additional difficulty of transferring or transporting the mixing material to an exit or outlet. Mixers with a hole or drain through the bottom of the tray, or through one or both sides of the tray, exist. In construction and in the construction machinery sector, in addition to wheel loaders, forklift trucks are often present on a construction site, but not all types of accessories, in particular the mixing bucket, can be mounted on them. Mixing buckets are typically mounted on wheel loaders or so-called front loaders, where the vehicle's hydraulics are used to activate, control and control the mix accessories. It is desirable to be able to mount mixing equipment on other construction equipment. Furthermore, a fully autonomous mixing system that can be mounted on a vehicle, such as could be used in construction, is missing.

SUMMARY OF THE INVENTION

In general, it is the object of the present invention to provide a mixer

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-2 for mixing liquid and semi-liquid substances, preferably mortar, cement, concrete or substances with the same or similar properties as mortar, cement and / or concrete.

According to a first aspect of the invention, a mixer is provided for mixing liquid and semi-liquid substances, comprising a mixing tub or tub with a first lateral end on one side and a second lateral end on the other side of the tub or tub, the mixer further comprising a mixing tool, such as, for example, an auger or propeller with blades or vanes mounted within the mixing tub or tray, and a frame or support structure for carrying the mixing tub or tray, the mixing tub or tray being such is mounted on the frame that slopes the bottom of the mixing tub or bowl to the first or second lateral end. When referring to the lateral aspect, it should be noted that the mixing tub or tray, which has two opposite short sides and two opposite long sides, must be positioned on a vehicle or mounted with its long sides perpendicular to the direction of movement or travel of the vehicle. The inclined bottom of the mixing tub or bowl can vary from an angle of 5 ° to an angle of 45 °.

In one embodiment, the first lateral end of the mixing tub or tray is equipped with an outlet for pouring the mixing material and is positioned lower on the frame than the second lateral end of the mixing tub or tray. In addition, the second lateral end, which in that case is mounted higher, can be provided with a drive for controlling and powering the mixing tool. The fact that the mixing tub has a sloping bottom and includes a mixing tool implies an alignment of said mixing tool with the sloping bottom of the mixing tub. The inclined orientation of the mixing tool together with a variable mixing power (caused by choosing the appropriate mixing tool, e.g. an interrupted spiral blade; infra) along the lateral axis of the mixing bowl not only provides the best mixing efficiency for liquid and semi-liquid substances but also prevents creeping up into the mixing tub. Thus, in a preferred embodiment, the mixing tool has a variable mixing power along the lateral axis of the mixing tub. In case a mixing screw is chosen as the mixing tool, such a screw may comprise a spiral blade. In another embodiment, the mixing screw comprises a spiral blade with part of said spiral blade interrupted. In addition, part of the spiral blade can be provided with openings or slots. In a particular embodiment, that portion of the spiral blade, which is provided with openings or slots, is placed closest to the first or second lateral end, preferably closest to the first lateral end, which is positioned lower on the frame. The perforation of the blade ensures that the compression pressure exerted on the liquid or semi-liquid substance

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-3lower is in the lower part of the mixer (i.e. the part closest to the output), but higher in the upper part of the mixer. As a result, the mixing efficiency increases significantly while the mixing time shortens drastically.

According to a particular embodiment, the mixing power of the mixing tool, which is arranged along the lateral axis of the mixing tub or container, varies or decreases from the first to the second lateral end, as shown, for example, in Figure 7. In the embodiment shown in Figure 2, the mixing power varies from a first value at the first lateral end through a minimum value to a second, lower value at the second lateral end, said minimum value being less than both said first value as said second value. In said embodiment, the first lateral end is placed lower on the frame than the second lateral end. When using a mixing tool with the aforementioned variable mixing power profile along the lateral axis of the mixing tub, the undesired creeping up of the concrete to the top of the mixing tub can be prevented. This not only simplifies subsequent cleaning after use of the mixer (i.e. using only little water), but also prevents loading of residual material on the upper part and possible damage to the drive at the second lateral end. The top portion of the mixing tub or bowl may include an opening, optionally be fully open or semi-open, and may further include a screen grille. In an embodiment where the mixing tub or tray is open or semi-open, the tub is protected by a dual function screen grille. First, the sieve grille can prevent large objects from falling into the mixer and damage the different types of mixing tools described below. Second, the sieve grid can make the liquid substances, but more particularly the semi-liquid substances, less compact and divided into finer particles, thereby improving the mixing efficiency of the mixer. The mixing tub or bowl may further have a slope in the top of the mixing tub or bowl. More specifically, the ramp can also face the first lateral end and exit, reducing the height of the sieve grille and allowing the skilled person to better access the top of the mixer to lower bags with e.g. cement, concrete or to cut out a similar substance in the mixer.

The mixer frame is constructed in such a way that it can support the mixing tub or container and the mixing tool in an appropriate manner. Another embodiment of the mixer is provided with the frame or supporting structure mounted on a platform, the platform including rectangular hollow tubes so that the platform can be easily picked up by a forklift or similar vehicle. In other words, such a platform can be designed to be suitable

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- taken up by a so-called pallet truck or a forklift truck.

In a preferred embodiment, the frame is constructed to create free space under the mixing tub. As a result, the mixer can also include a power source, so that a fully autonomous auxiliary equipment is realized that can be mounted on a vehicle, in particular referring to, for example, a construction site vehicle. The power source can be electric in nature or work with fossil fuels. The major advantage of this autonomous system is that the mixer does not depend on any other external power source (eg compact excavators, tractors, ...).

According to the second aspect of the invention, the use of the mixer according to the first aspect of the invention is provided for mixing liquid and semi-liquid substances, in particular mixing mortar, cement or concrete.

According to a third aspect of the invention, a vehicle is provided with the mixer according to the first aspect of the invention.

BRIEF DESCRIPTION OF PE FIGURES

With specific reference to the figures, it is emphasized that the details shown are for illustrative purposes only and only for illustrative discussion of the various embodiments of the present invention. They are presented for the purpose of providing what is believed to be the most useful and forthcoming description of the principles and conceptual aspects of the invention. In this regard, no attempt is made to show more structural details of the invention than is necessary for a fundamental understanding of the invention. The description in combination with the figures makes clear to those skilled in the art how the various forms of the invention can be practiced.

Fig. 1: side view of the mixer (1). Shows the mixing tub (10) with the frame (30), with the first lateral end (12) positioned lower on the frame (30) than the second lateral end (13). The first lateral end (12) is equipped with an exit (14), comprising a sealing cover (16) and a handle (22), while the second lateral end (13) comprises the actuator (23). The advantage of a handle (22) is that the sealing cover (16) can be opened in a smooth and systematic way, thus reducing the risk of wastage of the mixed substance. The mixing tub is also equipped with a support beam (18). The bottom (11) of the mixing bowl slopes at an angle of 20 °. This arrangement allows a better mixing of the liquid or semi-liquid substance. Furthermore, the top of the mixing tub is 4 ° thick and the mixing tub (10) is protected by a sieve grille (17), so that the height of the

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-5 sieve grille (17) is lowered and the skilled person is given better access to the top of the mixer to cut out bags of cement, concrete, etc. in the mixer (1). A power source (32), particularly running on fossil fuels or electric power, can be mounted under the frame (30) on the platform (31).

Fig. 2: top view of the mixer (1). Shows the mixing tub (10), the first lateral end (12) being equipped with an outlet (14), comprising a sealing cover (16) and a handle (22), while the second lateral end (13) is the actuator (23) includes. The mixing tub (10), which includes the mixing tool (20) (i.e. the mixing screw (26), more particularly an interrupted spiral blade (27) slotted in the first three blades), is covered with a sieve grille (17). The platform (31) is also visible.

Fig. 3: front and rear view of the mixer (1). LEFT, front view: Shows the mixing tub (10) with the frame (30), with the first lateral end (12) positioned lower on the frame (30). The first lateral end (12) is equipped with an outlet (14), which includes a sealing cover (16) and a handle (22). The sieve grille (17) is equipped with sharpened rails (21). The frame (30) is mounted on the platform (31). RIGHT, rear view: Shows the mixing tub (10) with the frame (30), the second lateral end (13) comprising the drive (23). The frame (30) is mounted on the platform (31).

Fig. 4: Overhead bird's eye view of the mixer (1). Shows the mixing tub (10) with the frame (30), with the first lateral end (12) positioned lower on the frame (30) than the second lateral end (13). The first lateral end (12) is equipped with an exit (14), comprising a sealing cover (16) and a handle (22), while the second lateral end (13) comprises the actuator (23). A sealing ring (15) is mounted between the lid (16) and the outlet (14) to improve the sealing of the lid (16). The mixing tub is equipped with a support beam (18). The bottom (11) of the mixing bowl slopes at an angle of 20 °. This arrangement allows for better mixing of the liquid or semi-liquid substance. Furthermore, the top of the mixing bowl is 4 ° thick and the mixing bowl (10) is protected by a sieve grille (17), so that the height of the sieve grille (17) is lowered and the skilled person is able to reach the top of the mixer better to cut out bags of cement, concrete, etc. in the mixer (1). In this example, the sieve grille is equipped with four sharpened rails (21).

Fig. 5: detailed drawings of attachments that can be mounted on the tub (10). A) with handle, B) without handle and C) with tubular outlet.

Fig. 6: detailed drawings of the mixing tool (20). Shows the mixing tool (20), more specifically a mixing screw (26) which is an interrupted one

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-6 spiral blade (27), part of said spiral blade (27) being provided with openings or slots (four in this example). The perforation of the blade ensures that the compression pressure applied to the liquid or semi-liquid substance is lower in the lower part of the mixer (i.e. the part closest to the outlet), but higher in the upper part of the mixer. In between, the mixing power has a minimum value due to the interruption of the blade, said minimum value being lower than said value of the lower and upper part. As a result, the mixing efficiency increases significantly while the mixing time shortens drastically.

Fig. 7: detailed drawings of the mixing tool (20). Shows the mixing tool (20), more particularly a mixing screw (26) comprising a continuous spiral blade (27) attached to the drive (23), part of said spiral blade (27) having openings or slots (two in this example). The perforation of the blade ensures that the compression pressure applied to the liquid or semi-liquid substance is lower in the lower part of the mixer (i.e. the part closest to the outlet), but higher in the upper part of the mixer. As a result, the mixing efficiency increases significantly while the mixing time shortens drastically.

DETAILED DESCRIPTION OF PE INVENTION

In general, it is the object of the present invention to provide a mixer (1) for mixing liquid and semi-liquid substances, preferably mortar, cement, concrete or substances with the same or similar properties as mortar, cement and / or concrete. A side view, a front view, a rear view and a view from an angular bird's eye view are shown in Figures 1-4.

In a preferred embodiment, the mixer (1) comprises:

A mixing tub (10) with a first (12) and a second (13) lateral end. In a particular embodiment, the bottom (11) of the mixing tub tilts to the first (12) or the second (13) lateral end. In one embodiment, the slope varies between 5 ° and 45 °, in particular between 10 ° and 35 °, more in particular between 15 ° and 30 °, and even more in particular between 20 ° and 30 °, in a preferred embodiment with an angle of 20 ° so that one lateral end is positioned lower on the frame (30) listed below than the other lateral end. This position allows for better mixing. Furthermore, in a preferred embodiment, said first lateral end (12) is provided with an outlet (14) and is positioned lower on the frame (30) mentioned below than the second lateral end (13).

In a particular embodiment, the mixing tub (10) is supported by

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-7 support bars (18) and support bars (19), as shown in figure 1.

In another embodiment, shown in Figure 4, the outlet (14) includes a sealing ring (15) for improved sealing of the sealing cover (16).

The mixing tub (10) can be open or semi-open. In the embodiment where the mixing tub (10) is semi-open, the tub is protected by a sieve grille (17). In a specific embodiment, the screen grille is equipped with sharpened rails (21), as shown in figure 4. Depending on the substance to be cut into the mixing tub (10), the position of the sharpened rails (21) can be adjusted. number, vary. The sieve grille (17) has a double function. First, the sieve grille (17) prevents large objects from falling into the mixer and thus damaging the different types of mixing tools (20) described below. Second, the sieve grille (17) ensures that the liquid substances, but more particularly the semi-liquid substances, are less compacted and are divided into finer particles, thereby improving the mixing efficiency of the mixer (1).

Installed inside the mixing tub and angled mixing tool (20). The fact that the mixing tub (10) has a sloping bottom (11) and includes a mixing tool (20) implies an alignment of said mixing tool (20) with the sloping bottom (11) of the mixing tub; and a frame (30) to support the mixing tub (10);

said mixer (1) is further characterized in that the mixing power of the mixing tool (20) disposed along the lateral axis of said mixing tub varies from said first (12) to said second (13) lateral end, or decreases from the first to the second lateral end. In the embodiment shown in Figures 2 and 6, the mixing power varies from a first value at the first (12) lateral end via a minimum value to a second, lower value at the second (13) lateral end, said minimum value being smaller is then both said first value and said second value. In said embodiment, the first lateral end (12) is placed lower on the frame (30) than the second lateral end (13). Using a mixing tool (20) with the aforementioned variable mixing power profile along the lateral axis of the mixing tub can prevent unwanted creeping up of the concrete to the top of the mixing tub. This not only simplifies the subsequent cleaning after use of the mixer (i.e. using only little water), but also prevents the loading of residual material at the top part and any damage to the drive means at the second lateral end.

In stark contrast to other mixers for mortar, concrete and other substances with the same properties as mortar, cement and / or concrete, this configuration (slope) makes it possible to increase the durability of the mixer (1) considerably. After the mortar, it

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-8 cement whether the concrete has been thoroughly mixed and poured from the mixer, this specific slope also helps to clean the mixer (1) more efficiently, using less water.

In another embodiment, in which the top part of the mixer is semi-open and includes a sieve grille (17), the top part of the mixing tub also has a ramp to the first lateral end (12) and an outlet (14), through which the the height of the sieve grille (17) is reduced and the skilled person is better able to access the top of the mixer to cut out bags of cement, concrete, etc. in the mixer (1).

As indicated above, the first lateral end (12) of the mixing tub (10) in the preferred embodiment is equipped with an outlet (14) through which the mixed substance can be poured. The outlet (14) is normally closed with a lid (16), which can be opened very easily by opening a lock and / or pulling a handle (22). The advantage of a handle (22) is that the lid (16) can be opened smoothly and systematically, thus reducing the risk of wasting the mixed substance. The drive (23) of the mixing tool (20) is positioned on the opposite side of the outlet (14), being the second lateral end (13) of the mixing tub (10). Surprisingly, the placement of the actuator (23) at the second lateral end (13) of the mixing tub (10) results in improved durability because the actuator (23) does not come into direct contact with the liquid and / or semi-liquid substances. Furthermore, the shaft end of the mixer is better protected, thanks to the slope described above, against wear caused by mortar, concrete, cement, etc. In a special embodiment, the drive (23) comprises a gear wheel (24) attached to a hydraulic motor (25). allowing movement of the mixing screw (20). Furthermore, different attachments can be mounted on the mixing tub (10), as shown in figure 5.

In a preferred embodiment, the mixing tool (20) is characterized by a mixing screw (26) (Figures 6-7). In a preferred embodiment, the mixing screw (26) includes a spiral blade (27), although other screws are also possible, including a blade paddle screw, a paddle blade screw, a ribbon blade screw, a turbine blade screw causing turbulence, a propeller with an umbrella-shaped blade, a propeller with a flat-blade turbine, a propeller with an anchor-shaped blade, a propeller with a helical propeller blade, a propeller with a cyclo-blade, a propeller with a dispersing-homogenizing blade, a open blade screw, high transverse force screw causing reverse flow, propeller homogenizing blade high transverse force screw, etc. In another embodiment, the mixing screw (26) includes an interrupted spiral blade (Figure 6).

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-9A further part of said spiral blade (27) is provided with openings or slots and this part is placed closest to one of said first (12) or second (13) lateral ends, preferably closest to said first lateral end (12) positioned lower on said frame (30). The perforation of the blade ensures that the compression pressure applied to the liquid or semi-liquid substance is lower in the lower part of the mixer (i.e. the part closest to the outlet), but higher in the upper part of the mixer. As a result, the mixing efficiency increases significantly while the mixing time shortens drastically. In a particular embodiment, only the first four paddles of the spiral blade are perforated. The number of perforated blades may be higher or lower depending on the substance to be mixed. In one embodiment, the spiral blade is made of S355J grade steel and / or hard-wearing Hardox® sheet material.

The mixer frame (30) is constructed to support the mixing tub (10) and mixing tool (20) in an appropriate manner. In a particular embodiment, the frame (30) is made of metal. In a particular embodiment, the frame is made of steel plates, for example of the quality S235J or S355J. The bearing can include flange bearings with integrated seals. In another embodiment, the frame (30) is mounted on a platform (31), the platform (31) comprising rectangular hollow tubes so that the platform can be easily picked up by a forklift or similar vehicle. In a preferred embodiment, the frame (30) is constructed to create a certain free space under the mixing tub (10) in which the power source (32) can be placed. The power source (32) can be electrical in nature or run on fossil fuels. The main advantage of this system is that the mixer (1) works autonomously and does not depend on any other external power source (eg compact excavators, tractors, ...).

However, a vehicle equipped with the mixer (1) is also possible.

-10BE2017 / 5247

Claims (15)

CONCLUSIONS A mixer (1) for mixing liquid and semi-liquid substances, comprising: A mixing tub (10) with a first lateral end (12) and a second lateral end (13); Mixing tool (20) mounted inside said mixing tub (10); wherein said mixing tool (20) is characterized by a mixing screw (28); wherein said mixing screw comprises a spiral blade, part of said spiral blade being interrupted; and A frame (30) to support said mixing tub (10); The said mixing tub (10) being mounted on said frame (30) such that the bottom of the mixing tub (10) slopes down to the first or second lateral end (12, 13). The mixer according to claim 1, wherein said first lateral end (12) of said mixing tub (10), which is equipped with an outlet (14), is positioned lower on said frame (30) than the second lateral end (13) from the mixing tub (10). The mixer according to claim 2, wherein said second lateral end (13) of said mixing tub (10) is provided with a drive. The mixer according to any one of claims 1 to 3, wherein the mixing power of said mixing tool arranged along the lateral axis of said mixing tub (10) varies from said first (12) to said second (13) lateral end. The mixer according to claim 4, wherein the mixing power varies from a first value at the first (12) lateral end via a minimum value to a second, lower value at the second (13) lateral end, said minimum value being less then both said first value and said second value. The mixer according to any one of claims 1 to 5, wherein the mixing power of said mixing tool disposed along the lateral axis of said mixing tub (10) decreases from said first (12) to said second (13) lateral end. BE2017 / 5247 -117. The mixer according to any one of claims 1 to 6, wherein the top part of said mixing tub (10) comprises an opening. The mixer according to claim 7, wherein the top part of said mixing tub (10) is open or semi-open and comprises a screen grille (17). The mixer according to claim 8, wherein said mixing tub (10) further has a slope in said top portion of the mixing tub (10). The mixer according to claims 1 to 9, wherein the bottom (11) of said mixing tub (10) slopes at an angle between X ° and ¥ °. The mixer according to claims 1 to 10, wherein said mixing screw (26) comprises a spin bias, part of said spiral blade being apertured or sieved. The mixer according to claims 2 to 11, wherein said part of said spinning vortex, which is provided with openings or sieves, is placed closest to the first or second lateral end (12, 13), preferably the closest to the first lateral end (12) positioned lower on the frame (30) according to claim 2 or 3. The mixer according to claims 1 to 12, wherein said frame (30) is mounted on a platform (31). The mixer according to claims 1 to 13, further comprising a power source (32). Use of the mixer according to claims 1 to 14 for mixing liquid or semi-liquid substances, in particular for mixing mortar, cement or concrete. A vehicle equipped with the mixer according to claims 1 to 14. BE2017 / 5247