CN111844442A - Concrete mixing head and concrete mixing device - Google Patents

Abstract

The invention discloses a concrete mixing head and a concrete mixing device, wherein the mixing head comprises a mixing shaft, a cutter assembly and a plurality of mixing bodies, the cutter assembly comprises a plurality of cutter bodies, and the plurality of cutter bodies are uniformly distributed on the peripheral wall of the mixing shaft; the stirring bodies are arranged at the peripheries of the cutter body bodies at intervals in an annular mode by taking the axis of the stirring shaft as the center of a circle, the stirring bodies are provided with a first connecting end and a second connecting end, the first connecting end and the second connecting end are fixedly connected with the outer peripheral wall of the stirring shaft respectively, the cutter body bodies are arranged between the first connecting end and the second connecting end, the stirring shaft is driven by the concrete stirring device to rotate around the axis of the concrete stirring device through the stirring driving mechanism, so that the stirring bodies and the cutter body synchronously rotate, concrete can pass through a stirring gap between the stirring bodies and the cutter body, the cutter body continuously cuts the surface of the concrete in the stirring gap at the moment, and bubbles in the concrete can be eliminated simultaneously during stirring.

Description

Concrete mixing head and concrete mixing device

Technical Field

The invention relates to the field of concrete mixing equipment, in particular to a concrete mixing head and a concrete mixing device.

Background

In the building construction, concrete is indispensable material, and in the process of concrete manufacturing, agitated vessel need be used, weighs required material to various proportions through agitated vessel and stirs and form required concrete, and traditional agitated vessel only singly has the function of stirring. In the implementation process, the stirring amount of the stirring head on the traditional stirring equipment is small, and a plurality of stirring heads are generally required to be configured for stirring, so that the cost and the complexity of the equipment are greatly increased.

Meanwhile, an ultra-high performance concrete (such as the concrete disclosed in chinese patent CN 201811609452.4) appears in the market, which has ultra-high mechanical properties and excellent durability, and overcomes many disadvantages of the conventional concrete, such as low strength, poor durability, easy cracking, etc. However, the application of the ultra-high performance concrete in actual construction is not enough, and a plurality of technical problems still exist, wherein a very important problem is that the gas content of the ultra-high performance concrete prepared on a construction site is too much, the strength and the rigidity of the ultra-high performance concrete are undoubtedly reduced by the existence of bubbles, and the appearance and the internal quality of a building are also influenced. In the prior art, the foam is generally reduced by adding the defoaming agent during stirring, but the size range of the generated small foam is uncertain, so that the influence of the foam on the strength of the ultrahigh-performance concrete is reduced, and due to the large consumption of the constructional engineering concrete, the chemical components of the ultrahigh-performance concrete are influenced by adding too much defoaming agent, and potential harm is caused to the strength and the durability of the ultrahigh-performance concrete; in the prior art, a vibration table is adopted to vibrate concrete to discharge air bubbles, but the concrete quantity of actual engineering is large, vibration is inconvenient, and the efficiency is low.

Disclosure of Invention

The present invention is directed to a concrete mixing head and a concrete mixing apparatus, which solves one or more of the problems of the prior art and provides at least one of the advantages of the present invention.

The technical scheme adopted for solving the technical problems is as follows:

the present invention provides a concrete mixing head, comprising: the stirring shaft is provided with a central axis which is coaxial with the stirring shaft, the cutter assembly comprises a plurality of cutter bodies, and the cutter bodies are uniformly distributed on the peripheral wall of the stirring shaft; the stirring body is provided with a first connecting end and a second connecting end which are arranged at intervals along the axial direction of the stirring shaft, the first connecting end and the second connecting end are respectively fixedly connected with the peripheral wall of the stirring shaft, the plurality of cutter bodies are arranged between the first connecting end and the second connecting end, and a stirring gap is arranged between the stirring body and the cutter bodies.

The invention has the beneficial effects that: during the use, rotate around its axis through the drive (mixing) shaft, drive the epaxial stirring body of (mixing) and the synchronous rotation of cutter body, carry out the in-process that stirs at a plurality of stirring bodies to the concrete, the concrete can be through the stirring clearance between the stirring body and the cutter body, and at this moment a plurality of cutter bodies can constantly cut the concrete surface in the stirring clearance. When the ultra-high performance concrete is stirred, the air bubbles in the ultra-high performance concrete can be cut, and the air bubbles in the concrete can be eliminated during stirring, so that the construction steps are simplified, and the time is saved; when ordinary concrete is stirred, under the effect of a plurality of stirring bodies and a plurality of cutter body, the stirring amount can be improved, the number of stirring heads in the stirring equipment is reduced, so that the number of parts of the stirring equipment is reduced, and the manufacturing cost and complexity of the stirring equipment are reduced.

As a further improvement of the technical scheme, the stirring body is arranged in an arc-shaped bending mode along the axial direction of the stirring shaft, and the centroid of the stirring shaft faces the central axis of the stirring shaft.

Because the distance between stirring body and the (mixing) shaft diminishes from the middle part of stirring body towards the both ends of stirring body gradually, is that the clearance between stirring body and the (mixing) shaft surface diminishes from the middle part of stirring body towards the both ends of stirring body gradually promptly, so when the stirring, the middle part that the both ends of stirring body were followed to the concrete was drawn close for the cutter spare body can cut the concrete better, improves the efficiency of cutting the bubble. Moreover, the resistance of each part of the stirring body on the concrete is different, and the resistance on the stirring body is reduced from the middle part to the two ends of the stirring body, so that the driving force on the stirring shaft can be reduced, and the energy-saving effect is achieved.

As a further improvement of the technical scheme, the knife body is provided with a knife edge, and the knife edge and the stirring shaft rotate in the same direction.

The same orientation means the same trend, for example, when the mixer shaft is installed on the machine and driven to rotate clockwise in the opposite left-right direction, the knife edge is located on the clockwise side of the cutter body relative to the cutter body, and the knife edge may be a straight line, a diagonal line, an arch line or other curved line, as long as the orientation trend is substantially the same as the rotation direction of the mixer shaft. The purpose that sets up like this is in order to be at the (mixing) shaft pivoted in-process, and the cutter piece body accessible cutting edge cuts the concrete to but the small bubble in the concrete cuts, improves the effect of eliminating the bubble, also reduces the effort that produces simultaneously between cutter piece body and the concrete, be the concrete promptly to the resistance of cutter piece body, further reduces the required drive power of drive (mixing) shaft rotation.

As a further improvement of the technical scheme, the cutter body is of a blade structure, the blade structure is vertical to the axis of the stirring shaft, the cutter body is divided into a plurality of rows of cutter bodies, the cutter bodies are arranged at intervals in an annular mode along the axis of the stirring shaft as the center of a circle, each row of cutter bodies comprises a plurality of cutter bodies, and the cutter bodies are arranged at intervals along the axis of the stirring shaft.

The blade structure sets up with the axis of (mixing) shaft is perpendicular, and the one comes to form the resistance between reducible concrete and a plurality of cutter body, and the two also can increase the quantity of cutter body, improves the efficiency to the concrete cutting. And the multi-row cutter body can not only cut the concrete passing through the mixing gap, but also cut the concrete passing through the space between two adjacent mixing bodies.

As a further improvement of the above technical solution, the cutter assembly further includes a sleeve, the sleeve is fixedly sleeved on the outer peripheral wall of the stirring shaft between the first connecting end and the second connecting end, the sleeve is provided with a plurality of mounting grooves, and the plurality of cutter bodies are mounted on the plurality of mounting grooves in a one-to-one correspondence manner.

When using, the knife element body carries out fixed mounting through the sleeve, specifically, but knife element body fixed mounting on the mounting groove to can adjust knife element body range and quantity according to the demand, be suitable for the concrete of different grade type, make the range of application extensive. Because some concrete does not need to be defoamed, the cutter body is not required to cut at this time.

In addition, the invention also provides a concrete stirring device which comprises a stirring driving mechanism and the concrete stirring head, wherein the stirring shaft is in transmission connection with the stirring driving mechanism, and the stirring driving mechanism can drive the stirring shaft to rotate around the central axis.

When the stirring shaft is used, the stirring shaft is driven to rotate by the stirring driving mechanism, and the stirring driving mechanism can be portable or fixed, so that the concrete stirring device can have two forms, namely a portable stirring device and a fixed stirring device.

As a further improvement of the technical scheme, the concrete stirring device further comprises a stirring container and vacuumizing equipment, wherein the stirring container is provided with a closed stirring chamber, the concrete stirring head is arranged in the closed chamber, and the vacuumizing equipment is connected with the stirring chamber.

When the concrete mixing head is used, concrete is placed in the sealed cavity, and when the concrete is mixed and cut through the concrete mixing head, the vacuumizing equipment extracts air in the sealed cavity. When the air bubbles are cut, the air bubbles are promoted to be discharged from the concrete slurry, the regeneration of the air bubbles is inhibited, and the large air bubbles and the small air bubbles in the concrete can be effectively eliminated. The combination of cutting bubbles by the cutter body and pumping out the bubbles in vacuum can quickly and efficiently discharge the bubbles in the concrete slurry, so that the concrete is more compact, and the strength and the durability of the concrete are improved to a certain extent; replaces the common method of adding the defoaming agent at present, lightens the environmental pollution, saves the cost and is beneficial to the development of green engineering.

As a further improvement of the above technical scheme, the vacuum pumping device comprises a vacuum pump, a communicating piece is arranged between the vacuum pump and the stirring chamber, the communicating piece is provided with a first connecting port, a second connecting port, a third connecting port and a fourth connecting port which are communicated with each other, the first connecting port is connected with the vacuum pump, the second connecting port is connected with the stirring chamber, the third connecting port is connected with a barometer, and the fourth connecting port is connected with a pressure release valve.

When the vacuum pumping is performed, the stirring chamber is vacuumized through the vacuum pump, the air pressure inside the stirring chamber is monitored through the air pressure meter, and after the concrete stirring is completely defoamed, the pressure release valve is opened, so that the concrete is poured out after the stirring chamber is balanced with the external air pressure.

As a further improvement of the above technical solution, the stirring container includes a stirring barrel and a barrel cover, the stirring barrel is provided with an upward barrel opening, and the barrel cover is sealed over the barrel opening, so that the stirring barrel and the barrel cover form the stirring chamber; the concrete mixing device further comprises a frame, the side wall of the mixing tank is rotatably arranged on the frame through a rotating part, and the rotating axis of the rotating part is horizontally arranged.

When pouring out the concrete, open the bung to the drive agitator revolves the rotating member and rotates, makes the concrete in the agitator pour out from the bung hole, the workman's of being convenient for operation.

As the further improvement of the technical scheme, the concrete mixing head is arranged in the mixing tank, the rotating pieces are provided with two, the two rotating pieces are respectively arranged on two opposite side walls of the mixing tank, the two rotating pieces are coaxially arranged, the mixing shaft is coaxially arranged with the rotating axis of the rotating piece, two ends of the mixing shaft are respectively and relatively rotatably connected with the rotating pieces, the mixing driving mechanism comprises a mixing motor arranged on the rack, and the mixing motor is in transmission connection with one end of the mixing shaft.

When stirring is carried out, the stirring shaft is driven to rotate by the stirring motor. When pouring the concrete, the swing agitator rotates around two rotation pieces, and at this moment the agitator also swings around the axis of (mixing) shaft to the required power of reducible swing agitator reduces workman's intensity of labour.

Drawings

The invention is further described with reference to the accompanying drawings and examples;

FIG. 1 is a schematic structural view of an embodiment of a concrete mixing apparatus according to the present invention;

Fig. 2 is a schematic structural diagram of an embodiment of the concrete mixing head provided by the invention.

Detailed Description

Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, if words such as "a plurality" are described, the meaning is one or more, the meaning of a plurality is two or more, more than, less than, more than, etc. are understood as excluding the present number, and more than, less than, etc. are understood as including the present number.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

Referring to fig. 2, the concrete mixing head of the present invention makes the following examples:

the concrete mixing head of this embodiment includes (mixing) shaft 100, cutter unit spare, three stirring body 300, and wherein cutter unit spare includes sleeve 700, a plurality of cutter body 200, the fixed suit of sleeve 700 is on the periphery wall of (mixing) shaft 100 be provided with a plurality of mounting grooves on the sleeve 700, cutter body 200 one-to-one install in on the mounting groove, when the equipment, cutter body 200 fixed mounting is on mounting groove (not shown), can adjust cutter body 200 according to the demand and arrange and quantity, is suitable for the concrete of different grade type for the range of application is extensive.

The three stirring bodies 300 are annularly arranged at intervals on the peripheries of the plurality of cutter bodies 200 with the axial center of the stirring shaft 100 as a circle center, the stirring bodies 300 are arranged in an arc-shaped bent manner along the axial direction of the stirring shaft 100, the centroid of the stirring shaft 100 faces the axis of the stirring shaft 100, the stirring bodies 300 are provided with a first connecting end 310 and a second connecting end 320, the first connecting end 310 and the second connecting end 320 are arranged at intervals along the axial direction of the stirring shaft 100, the first connecting end 310 and the second connecting end 320 are respectively and fixedly connected with the outer peripheral wall of the stirring shaft 100, the plurality of cutter bodies 200 are arranged between the first connecting end 310 and the second connecting end 320, namely, the first connecting end 310 and the second connecting end 320 are respectively arranged at the outer sides of the two ends of the sleeve 700, and a stirring gap is arranged between the main body of the stirring body 300 and the cutter.

Under drive (mixing) shaft 100 rotates around its axis, can drive stirring body 300 and the synchronous rotation of cutter member body 200 on the (mixing) shaft 100, at a plurality of stirring bodies 300 the in-process that stirs the concrete, the concrete can pass through the stirring clearance between stirring body 300 and the cutter member body 200, and pass through two adjacent stirring bodies 300, at this moment, cutter member body 200 is constantly to the concrete through stirring clearance and between two adjacent stirring bodies 300 cutting, thereby can cut the bubble in the concrete, can eliminate the bubble in the concrete simultaneously in the stirring, the construction step has been simplified, save the time, improve the effect of eliminating the bubble.

The blade body 200 of the present embodiment is a blade structure, the blade structure is perpendicular to the axis of the stirring shaft 100, the blade body 200 is provided with a cutting edge 210, and the cutting edge 210 is in the same direction as the rotation direction of the stirring shaft 100. The cutter body 200 cuts the concrete through the cutting edge 210, so that small air bubbles in the concrete can be cut, the resistance formed between the cutter body 200 and the concrete can be reduced, the driving force required for driving the stirring shaft 100 to rotate is reduced, and the energy-saving effect is achieved.

In other embodiments, more than three insert bodies 200 may be provided.

In other embodiments, the blade body 200 may be of other configurations, such as a bendable blade configuration, and may be bent around the circumference of the mixer shaft 100 to cut concrete.

In this embodiment, the plurality of blade bodies 200 are divided into a plurality of rows of blade bodies 200, the plurality of rows of blade bodies 200 are annularly arranged at intervals around the axis of the stirring shaft 100, each row of blade bodies 200 includes a plurality of blade bodies 200, and the plurality of blade bodies 200 are arranged at intervals around the axis of the stirring shaft 100, so that the cutting range of the stirring head can be expanded. In other embodiments, the arrangement of the cutter bodies 200 may be in other forms, and the cutter bodies 200 in each row may be staggered from each other, so as to improve the cutting efficiency.

In some embodiments, the shape of the stirring body 300 may be various, and only a stirring gap is required to be formed between the stirring body 300 and the insert body 200.

Meanwhile, as shown in fig. 1, the embodiment further provides a concrete mixing device, which includes a mixing driving mechanism and the concrete mixing head, wherein the mixing driving mechanism is in transmission connection with the mixing shaft 100.

In some embodiments, the mixer drive mechanism may be portable or stationary, such that the concrete mixing apparatus may have two configurations, a portable and a stationary mixer, respectively, and the mixer drive mechanism may drive the mixer shaft (100) to rotate about the central axis.

The concrete mixing device of this implementation still includes stirred vessel 400 and vacuum pump 500, stirred vessel 400 is provided with inclosed stirring cavity 800, and vacuum pump 500's the end of bleeding links to each other with stirring cavity 800, and the concrete mixing head sets up in inclosed cavity. When stirring and cutting are carried out, the stirring chamber 800 is vacuumized through the vacuum pump 500, so that bubbles can be promoted to be discharged from concrete slurry, the bubbles are restrained from being generated again, large bubbles and small bubbles in the concrete can be effectively eliminated, and the efficiency of eliminating the bubbles is improved. Utilize the cutter element body 200 cutting bubble and the bubble combination of taking out in the vacuum, the bubble in the high efficiency discharge concrete slurry can make the concrete more closely knit, improves the intensity and the durability of concrete to a certain extent. Compared with the traditional method for eliminating the air bubbles, the method overcomes the defects that the size of large air bubbles is reduced by adding a defoaming agent, the uncertainty of the size range of the generated small air bubbles does not influence the chemical components of the concrete, and the influence of the defoaming agent on the strength of the concrete is reduced; compared with the method of discharging air bubbles by vibrating after stirring, the method simplifies the construction steps, saves time and is more flexible and convenient to move.

Further, the mixing container 400 includes a mixing barrel 410 and a barrel cover 420, the mixing barrel 410 is provided with an upward barrel opening, the barrel cover 420 is sealed on the barrel opening, so that the mixing chamber 800 is formed by the mixing barrel 410 and the barrel cover 420, the concrete mixing device further includes a frame 600, two opposite side walls of the stirring barrel 410 are respectively provided with a rotating part 411, the two rotating parts 411 are coaxially arranged, the rotation axis of the rotating part 411 is arranged horizontally, the stirring shaft 100 is arranged coaxially with the rotation axis of the rotating part 411, both ends of the stirring shaft 100 are rotatably connected to the rotating members 411, respectively, the stirring driving mechanism includes a stirring motor (not shown) mounted on the frame 600, the side wall of the stirring barrel 410 is rotatably mounted on the frame 600 through a rotating member 411, and the stirring motor is in transmission connection with one end of the stirring shaft 100. After the stirring is completed, the barrel cover 420 is opened, the swinging stirring barrel 410 rotates around the two rotating pieces 411, so that concrete in the stirring barrel 410 is poured out from the barrel opening, at the moment, the stirring barrel 410 also swings around the axis of the stirring shaft 100, and the stirring head is not driven to act during pouring out operation, so that the force required by swinging the stirring barrel 410 can be reduced, and the labor intensity of workers is reduced.

Furthermore, after the mixing, the air pressure in the mixing chamber 800 is smaller than the external air pressure, so that the barrel cover 420 is hard to open, and sometimes the barrel cover cannot be opened, so in this embodiment, the communicating member 510 is disposed between the vacuum pump 500 and the mixing chamber 800, the communicating member 510 is provided with a first connecting port 511, a second connecting port 512, a third connecting port 513 and a fourth connecting port 514, which are mutually communicated, the first connecting port 511 is connected with the vacuum pump 500, the second connecting port 512 is connected with the mixing chamber 800, the third connecting port 513 is connected with an air pressure gauge 515, the fourth connecting port 514 is connected with a pressure relief valve 516, and after the concrete mixing and defoaming are completed, the pressure relief valve 516 is opened, so that after the mixing chamber 800 is balanced with the external air pressure, the barrel cover 420 can be easily opened, and the air pressure inside the mixing chamber 800 is monitored by the air pressure gauge. In order to improve the defoaming efficiency, it is necessary to be stationary for a period of time to suck out the bubbles in the concrete, a regulating valve may be installed between the first connection port 511 and the vacuum pump 500, and after the operation of the vacuum pump 500 is stopped, the regulating valve may be closed to maintain the vacuum degree in the stirring chamber 800 for a period of time, which may have an energy saving effect.

In this embodiment, a pulley assembly is mounted to the housing 600 to facilitate movement of the apparatus.

The concrete stirring device integrates the stirring function and the exhaust function into one machine, greatly facilitates site construction, can achieve good construction effect, can save cost, and is suitable for stirring ultrahigh-performance concrete and other various types of concrete.

While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that the present invention is not limited to the details of the embodiments shown and described, but is capable of numerous equivalents and substitutions without departing from the spirit of the invention as set forth in the claims appended hereto.

Claims (10)

1. A concrete mixing head is characterized in that: the method comprises the following steps:

a stirring shaft (100);

the cutter assembly comprises a plurality of cutter bodies (200), the number of the cutter bodies (200) is multiple, and the cutter bodies (200) are uniformly distributed on the peripheral wall of the stirring shaft (100);

the stirring bodies (300) are arranged on the peripheries of the plurality of cutter body (200) in an annular interval arrangement mode by taking the axis of the stirring shaft (100) as the center of a circle, the stirring bodies (300) are provided with a first connecting end (310) and a second connecting end (320), the first connecting end (310) and the second connecting end (320) are arranged at intervals along the axial direction of the stirring shaft (100), the first connecting end (310) and the second connecting end (320) are fixedly connected with the outer peripheral wall of the stirring shaft (100) respectively, the plurality of cutter body (200) are arranged between the first connecting end (310) and the second connecting end (320), and a stirring gap is formed between the stirring bodies (300) and the cutter body (200).

2. A concrete mixing head according to claim 1, wherein:

the stirring body (300) is arranged along the axial direction of the stirring shaft (100) in an arc-shaped bending mode, and the centroid of the stirring shaft (100) faces the central axis of the stirring shaft (100).

3. A concrete mixing head according to claim 1, wherein:

the cutter body (200) is provided with a cutting edge (210), and the cutting edge (210) and the rotating direction of the stirring shaft (100) are in the same direction.

4. A concrete mixing head according to claim 1, wherein:

the utility model discloses a cutting tool, including (mixing) shaft (100), cutter body (200), the cutter structure (200) is the blade structure, the blade structure with the axis of (mixing) shaft (100) is perpendicular, and is a plurality of cutter body (200) divide into many rows of cutter body (200), and many rows of cutter body (200) are followed the axle center that uses (mixing) shaft (100) and are the annular interval arrangement setting as the centre of a circle, and each row of cutter body (200) includes a plurality of cutter body (200), and a plurality of cutter body (200) are the interval setting along the axis of (mixing) shaft (100).

5. A concrete mixing head according to claim 1, wherein:

the cutter assembly further comprises a sleeve (700), the sleeve (700) is fixedly sleeved on the outer peripheral wall of the stirring shaft (100), the sleeve (700) is located between the first connecting end (310) and the second connecting end (320), mounting grooves are formed in the sleeve (700), the number of the mounting grooves is multiple, and the cutter bodies (200) are mounted on the mounting grooves in a one-to-one correspondence mode.

6. A concrete mixing device is characterized in that:

the concrete mixing head comprises a mixing driving mechanism and the concrete mixing head as claimed in any one of claims 1 to 5, wherein the mixing shaft (100) is in transmission connection with the mixing driving mechanism, and the mixing driving mechanism can drive the mixing shaft (100) to rotate around a central axis.

7. A concrete mixing apparatus according to claim 6, wherein:

the concrete mixing device further comprises a mixing container (400) and vacuumizing equipment, wherein the mixing container (400) is provided with a closed mixing chamber (800), the concrete mixing head is arranged in the closed chamber, and the vacuumizing equipment is connected with the mixing chamber (800).

8. A concrete mixing apparatus according to claim 7, wherein:

the vacuumizing device comprises a vacuum pump (500), a communicating piece (510) is arranged between the vacuum pump (500) and the stirring chamber (800), the communicating piece (510) is provided with a first connecting port (511), a second connecting port (512), a third connecting port (513) and a fourth connecting port (514) which are communicated with each other, the first connecting port (511) is connected with the vacuum pump (500), the second connecting port (512) is connected with the stirring chamber (800), the third connecting port (513) is connected with a barometer (515), and the fourth connecting port (514) is connected with a pressure release valve (516).

9. A concrete mixing apparatus according to claim 7, wherein:

the stirring container (400) comprises a stirring barrel (410) and a barrel cover (420), wherein the stirring barrel (410) is provided with an upward barrel opening, the barrel cover (420) is sealed on the barrel opening, and the stirring barrel (410) and the barrel cover (420) form a stirring chamber (800);

concrete mixing device still includes frame (600), the lateral wall of agitator (410) is rotationally installed in frame (600) through rotating piece (411), the rotation axis that rotates piece (411) is the level setting.

10. A concrete mixing apparatus according to claim 9, wherein:

the concrete mixing head sets up in agitator (410), it is provided with two to rotate piece (411), and two rotate piece (411) and install respectively on the relative both sides wall of agitator (410), and two rotate coaxial settings of piece (411), (mixing) shaft (100) with the coaxial setting of the axis of rotation that rotates piece (411), the both ends of (mixing) shaft (100) are connected with rotating piece (411) relatively rotationally respectively, stirring actuating mechanism is including installing the agitator motor in frame (600), agitator motor is connected with the one end transmission wherein of (mixing) shaft (100).

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