CN110116457B

CN110116457B - Concrete mixing equipment

Info

Publication number: CN110116457B
Application number: CN201910530722.0A
Authority: CN
Inventors: 张飞; 曹有来; 郑红高; 施勇
Original assignee: Beijing Zhongshi Shangzhuang Concrete Co ltd
Current assignee: Beijing Zhongshi Shangzhuang Concrete Co ltd
Priority date: 2019-06-19
Filing date: 2019-06-19
Publication date: 2021-02-26
Anticipated expiration: 2039-06-19
Also published as: CN110116457A

Abstract

The invention discloses concrete mixing equipment, which adopts the technical scheme that: the concrete mixing and stirring device comprises a stirrer body, wherein a feeding hole is formed in the upper part of the stirrer body, a centrifugal evacuating device for evacuating raw materials is arranged in the stirrer body and is positioned below the feeding hole, an annular mixing cavity is formed in the periphery of the centrifugal evacuating device, an auxiliary stirring device for mixing and stirring dispersed materials is arranged in the annular mixing cavity, a conveying cavity is communicated with the bottom in the annular mixing cavity, a discharging hole is formed in one end of the conveying cavity, and a conveying device for driving concrete to be discharged from the discharging hole is arranged in the conveying cavity; the centrifugal evacuating device comprises a striker plate arranged below the feed inlet of the stirrer body and a driving motor erected in the annular mixing cavity and driving the striker plate to rotate. The invention has the advantages that: the stirring efficiency of the concrete stirring equipment is improved.

Description

Concrete mixing equipment

Technical Field

The invention relates to the field of concrete mechanical equipment, in particular to concrete stirring equipment.

Background

A concrete mixer is a machine for mixing and stirring cement, gravel aggregate and water into a concrete mixture. The device mainly comprises a mixing barrel, a feeding and discharging mechanism, a water supply system, a prime motor, a transmission mechanism, a frame, a supporting device and the like. According to working properties, the method is divided into a batch type (batch type) and a continuous type; according to the stirring principle, the method is divided into a self-falling type method and a forced type method; the device is divided into a fixed type and a movable type according to the installation mode; dividing a tilting type and a non-tilting type according to a discharging mode; according to the structure of the mixing drum, the mixing drum is divided into a pear type, a drum type, a double cone, a disc vertical shaft type, a circular groove horizontal shaft type and the like.

Chinese patent publication No. CN107571395A discloses a concrete mixer convenient to open and clean. The concrete mixer comprises a concrete mixer body, wherein the right side surface of the concrete mixer body is fixedly connected with a motor and a protective cover respectively, the motor is located inside the protective cover, the output end of the motor is fixedly connected with a rotating shaft through a coupler, and stirring blades are arranged inside the concrete mixer body.

This concrete mixer need carry into this internally with the raw materials concrete mixer, drives the stirring leaf through the motor and stirs this internal raw materials of concrete mixer. In order to fully mix and stir raw materials, the stirring is ensured for a long time, so that the uneven stirring is not easy to occur.

Disclosure of Invention

The invention aims to provide concrete mixing equipment, which has the advantage of improving the mixing efficiency of the concrete mixing equipment.

The technical purpose of the invention is realized by the following technical scheme:

a concrete mixing device comprises a mixer body, wherein a feed inlet is formed in the upper part of the mixer body, a centrifugal evacuating device for evacuating raw materials is arranged in the mixer body and below the feed inlet, an annular mixing cavity is formed in the periphery of the centrifugal evacuating device, an auxiliary mixing device for mixing and stirring dispersed materials is arranged in the annular mixing cavity, a conveying cavity is communicated with the bottom in the annular mixing cavity, a discharge outlet is formed in one end of the conveying cavity, and a conveying device for driving concrete to be discharged from the discharge outlet is arranged in the conveying cavity;

the centrifugal evacuating device comprises a striker plate arranged below the feed inlet of the stirrer body and a driving motor erected in the annular mixing cavity and driving the striker plate to rotate.

According to the technical scheme, raw materials of concrete can enter the mixer body through the feeding hole above the mixer body, the same materials can be accumulated when entering the mixer body, so that the mixing time is influenced, in the invention, the materials enter the mixer body, the driving motor drives the baffle plate to rotate, so that the materials are uniformly thrown into the annular mixing cavity after contacting with the baffle plate, the materials are dispersed more uniformly, and then the materials in each area in the annular mixing cavity are stirred in different areas through the auxiliary stirring device.

The invention is further configured to: the utility model discloses a mixer, including striker plate, baffle plate, setting and driving assembly, the striker plate below be provided with one with striker plate fixed connection's support frame, the border of striker plate is provided with the speed adjusting mechanism of adjusting material conveying speed, speed adjusting mechanism is including articulating a plurality of positioning plate in striker plate border department to and set up and drive a plurality of positioning plate and striker plate rotation in the support frame, the first drive assembly in space between adjustment striker plate and the mixer body inner wall, driving motor erects at the middle part in annular mixing chamber vertically, driving motor's output shaft and support frame fixed connection.

Through above-mentioned technical scheme, driving motor work drives the striker plate and rotates to along with the rotation of striker plate, in throwing into annular mixture chamber with the material that contacts on the striker plate, in order to make the material that enters into in the annular mixture chamber can be abundant obtain the stirring, the volume that the material entered into in the annular mixture chamber can be adjusted in the setting of speed regulating mechanism, thereby makes the material in the annular mixture chamber can fully obtain the mixture. Through the work of first drive assembly, take place to rotate between drive positioning plate and the striker plate to the space between adjustment positioning plate and the mixer body inside, thereby influence the speed that the material entered into in the annular mixing chamber, be convenient for regulate and control the stirring speed in the annular mixing chamber.

The invention is further configured to: the first driving assembly comprises a servo motor fixed above the supporting frame, a screw rod fixedly connected with the output shaft of the servo motor in a coaxial mode, a nut connected with the screw rod in a threaded mode, and a plurality of driving rods arranged on the periphery of the nut, wherein the driving rods correspond to the positioning plates in number one to one, one ends of the driving rods are hinged to the lower surface of the positioning plates, and the other ends of the driving rods are hinged to the periphery of the nut.

Through the technical scheme, the servo motor works to drive the screw rod to rotate, and the end part of the driving rod receives the limiting effect of the position adjusting plate, so that the nut is driven to be in threaded connection with the screw rod, the nut slides along the length direction of the screw rod, the position adjusting plate and the material baffle plate are rotated, the size of a gap between the position adjusting plate and the inner wall of the stirring machine body is adjusted, and the first driving assembly is simple in structure and convenient to maintain.

The invention is further configured to: the upper surface rigid coupling of striker plate has a plurality of and dials the board to the material is stirred.

Through the technical scheme, when the striker plate pivoted in-process, it is rotatory to drive group board to make the material drop in the striker plate top, dial the board and can stir the material to annular material mixing chamber, improved the efficiency of stirring the material.

The invention is further configured to: the vertical a plurality of axis of rotation that is provided with in annular compounding intracavity, the axis of rotation rotates with the mixer body to be connected, and coaxial rigid coupling has first helical blade on every axis of rotation global, the top of axis of rotation is provided with the second drive assembly who drives a plurality of axis of rotation pivoted simultaneously.

Through above-mentioned technical scheme, the material enters into annular compounding intracavity after, and the second drive assembly drives all axis of rotation rotations for first helical blade above the axis of rotation mixes the stirring to the material of annular compounding intracavity, thereby has improved the material mixing efficiency of annular compounding intracavity.

The invention is further configured to: the second driving assembly comprises gears which are coaxially and fixedly connected to the upper end of each rotating shaft, the gears are meshed with each other, a second motor is fixedly connected to the stirrer body, and an output shaft of the second motor is coaxially and fixedly connected with one of the rotating shafts.

Through the technical scheme, the second motor is started to drive one of the rotating shafts to rotate, and through mutual meshing between the gears, the other rotating shafts are driven to rotate, all the first helical blades are enabled to mix and stir materials in the annular mixing cavity, and through independent work of the second motor, rotation of all the rotating shafts can be achieved, so that energy consumption is reduced, and maintenance efficiency is improved.

The invention is further configured to: the bottom in the annular mixing cavity is communicated with a gathering hopper, and the bottom of the gathering hopper is communicated with the material conveying cavity.

Through the technical scheme, the materials in all the areas in the annular mixing cavity are intensively collected by the aid of the collecting hopper, so that the materials are intensively stirred.

The invention is further configured to: and a second helical blade is fixedly connected to the inner circumferential surface of the material collecting hopper along the height direction of the material collecting hopper.

Through above-mentioned technical scheme, second helical blade sets up on the inner peripheral surface of gathering the hopper to the material in the annular compounding intracavity has been played supplementary effect of accepting, has slowed down the speed of material from the interior whereabouts of annular compounding intracavity. And in the process that the materials flow downwards in the aggregate bin, the second spiral blade also slows down the flow speed of the materials, and the concrete is favorably and fully mixed.

The invention is further configured to: gather the middle part of hopper and be provided with the compounding mechanism that carries out the mixture to the material after the polymerization, compounding mechanism is including erectting the initiative motor at annular mixture chamber middle part, the vertical setting of initiative motor, and the coaxial rigid coupling of the output shaft of initiative motor has the connecting axle, and the rigid coupling has a plurality of stirring vane on the global of connecting axle.

Through above-mentioned technical scheme, after the material of annular compounding intracavity flowed into and gathers the hopper, the driving motor started, drove the connecting axle and rotates to make stirring vane stir the material of gathering in the hopper, the material can be in the same direction as the spiral direction by second helical blade downward flow at the in-process of stirring, because second helical blade's setting has slowed down the flow velocity of material, thereby has improved the stirring efficiency of material.

The invention is further configured to: defeated material mechanism is including setting up the transport axle in defeated material intracavity, carries the axle to lay along the length direction in defeated material chamber to rotate with defeated material intracavity wall and be connected, carry the axle to deviate from the tip of defeated material mouth and be provided with the drive and carry axle pivoted third motor, carry the rigid coupling on the global of axle to have a third helical blade.

Through above-mentioned technical scheme, when the concrete flowed into defeated material intracavity, the third motor work, drive and carry the axle to rotate for third helical blade stirs at defeated material intracavity, thereby drives the concrete and carries to the direction of material conveying mouth when defeated material intracavity stirring, and discharge the concrete from defeated material mouth.

In conclusion, the invention has the following beneficial effects:

firstly, the material stirring efficiency is improved. The material is driven to be uniformly dispersed in the annular mixing cavity through the rotation of the material baffle plate, and the material in the annular mixing cavity is stirred through the first helical blade, so that the stirring efficiency of the concrete is improved;

and secondly, controlling the feeding speed of the material. The servo motor works, drives the screw rod and rotates, because the tip of actuating lever has received the limiting displacement of positioning plate to drive the threaded connection of nut and screw rod, make the nut slide along the length direction of screw rod, make and take place to rotate between positioning plate and the striker plate, thereby the space size between adjustment positioning plate and the mixer body inner wall, the speed that the adjustment material entered into annular compounding intracavity.

Drawings

FIG. 1 is a schematic view showing the overall construction of a concrete mixing apparatus;

FIG. 2 is a schematic view showing the internal structure of the blender body;

FIG. 3 is an enlarged view of detail A of FIG. 2;

FIG. 4 is a state diagram showing the operation of the speed regulating mechanism;

fig. 5 is a schematic structural diagram showing a second driving assembly.

In the figure, 1, a blender body; 11. a feed inlet; 12. a fixed tube; 121. a first support plate; 123. a second support plate; 13. a connecting rod; 14. an annular mixing chamber; 15. a support tray; 2. a feed hopper; 21. a communication port; 3. a gathering hopper; 31. a support pillar; 32. a second helical blade; 4. a material conveying cavity; 41. a discharge port; 5. a centrifugal evacuation device; 51. a drive motor; 52. a support frame; 521. a fixing plate; 522. a support bar; 53. a striker plate; 54. dialing a plate; 55. a speed regulating mechanism; 551. a positioning plate; 552. a first drive assembly; 5521. a servo motor; 5522. a screw; 5523. a nut; 5524. a drive rod; 6. an auxiliary stirring device; 61. a rotating shaft; 62. a first helical blade; 63. a second drive assembly; 631. a gear; 632. a second motor; 7. a material mixing mechanism; 71. an active motor; 72. a connecting shaft; 73. a stirring blade; 8. a material conveying mechanism; 81. a third motor; 82. a delivery shaft; 83. a third helical blade.

Detailed Description

The utility model provides a concrete mixing equipment, as shown in figure 1, includes columniform mixer body 1, and feed inlet 11 (here is shown in figure 2) has been seted up at the middle part of mixer body 1 upper surface, and 1 tops of mixer body are provided with the feeder hopper 2 that communicates each other with mixer body 1, and 1 belows of mixer body are provided with and gather hopper 3 with mixer body 1 intercommunication each other, gather hopper 3 below be provided with gather defeated material chamber 4 that hopper 3 communicates each other. The peripheral surface of the aggregate bin 3 is vertically provided with four support columns 31 for supporting the mixer body 1.

As shown in figure 1, the top of the feed hopper 2 is provided with a seal, and the upper surface of the feed hopper 2 is provided with four communicating ports 21 for communicating different materials, so that the materials after proportioning can be conveniently poured into the mixer body 1.

As shown in figure 2, a fixed pipe 12 which is coaxial with the stirring machine is arranged in the stirring machine body 1, a plurality of connecting rods 13 are arranged between the fixed pipe 12 and the inner wall of the stirring machine body 1, and two ends of each connecting rod 13 are fixedly connected with the inner wall of the stirring machine body 1 and the outer wall of the fixed pipe 12 respectively, so that an annular mixing cavity 14 is formed in the stirring machine body 1. The upper port of the fixed pipe 12 is provided with a centrifugal evacuating device 5 for evacuating the material entering from the feed inlet 11.

As shown in fig. 3, a first supporting plate 121 is horizontally fixed to the inner wall of the fixing tube 12. The centrifugal evacuation device 5 comprises a driving motor 51 vertically and fixedly connected to the upper surface of the first support plate 121, the driving motor 51 is coaxially arranged with the mixer body 1, a support frame 52 is fixedly connected to an output shaft of the driving motor 51, and a baffle plate 53 is fixedly connected to the upper side of the support frame 52. The supporting frame 52 includes a fixing plate 521 vertically fixed to the output shaft of the driving motor 51, and a plurality of supporting rods 522 vertically fixed to the upper surface of the fixing plate 521, and the other ends of the supporting rods 522 are fixedly connected to the bottom surface of the striker plate 53. The striker plate 53 is the arc that 11 direction archs of middle part to mixer body 1 feed inlet set up, and when the material entered into mixer body 1 inside through feeder hopper 2, driving motor 51 started, and it is rotatory to drive striker plate 53 to make the material when contacting striker plate 53, can be got rid of annular mixing chamber 14 by striker plate 53 in, because striker plate 53 is the arc, thereby played the effect of drainage to the material. And four shifting plates 54 are vertically and fixedly connected to the upper surface of the material blocking plate 53, and the shifting plates 54 are uniformly distributed on the upper surface of the material blocking plate 53 by taking the center of the material blocking plate 53 as a circle center. When the striker plate 53 rotates, the driving plate 54 is driven to rotate at a high speed, so that the contact area with the material is increased, the efficiency of the material entering the annular mixing cavity 14 is improved, and the material entering the annular mixing cavity 14 is more uniform.

As shown in fig. 3 and 4, the supporting frame 52 is further provided with a speed regulating mechanism 55 for controlling the flow rate of the material entering the annular mixing chamber 14. The speed regulation mechanism 55 comprises six position regulation plates 551 arranged at the edge of the material baffle plate 53, the position regulation plates 551 are uniformly distributed on the circumferential surface of the position regulation plate 551 and are hinged with the material baffle plate 53, the inclination radian of the position regulation plate 551 is the same as the inclination trend of the material baffle plate 53, and the hinging shaft of the position regulation plate 551 and the material baffle plate 53 is mutually vertical to the output shaft of the driving motor 51. The fixing plate 521 is further provided with a first driving assembly 552 for driving the positioning plate 551 to swing and adjusting the gap between the positioning plate 551 and the inner wall of the blender body 1.

As shown in fig. 3 and 4, the first driving assembly 552 includes a servo motor 5521 vertically fixed on the upper surface of the fixing plate 521, an output shaft of the servo motor 5521 is coaxially disposed with an output shaft of the driving motor 51, a screw 5522 is coaxially fixed on the output shaft of the servo motor 5521, a nut 5523 is screwed on the screw 5522, a plurality of driving rods 5524 are disposed on the circumferential surface of the nut 5523, the number of the driving rods 5524 corresponds to the number of the positioning plates 551 one to one, one end of each driving rod 5524 is hinged to the corresponding screw 5522, and the other end of each driving rod 5524 is hinged to the bottom surface of the positioning plate 551. The worker can drive the screw 5522 to rotate through the work of the servo motor 5521; the nut 5523 slides along the length direction of the screw 5522 under the limit of the driving rod 5524, so as to drive the position adjusting plate 551 and the striker plate 53 to rotate. After the positioning plate 551 swings upwards, the gap between the stirrer body 1 and the positioning plate 551 can be reduced, so that the speed of the material entering the annular mixing cavity 14 is reduced, and the stirring efficiency of the concrete material in the annular mixing cavity 14 can be adjusted according to actual conditions. An annular material blocking pipe is further fixedly connected to the upper port of the fixed pipe 12, and the area of the upper port of the material blocking pipe is smaller than that of the upper port of the fixed pipe 12, so that the possibility that materials enter the fixed pipe 12 is reduced.

As shown in fig. 2, a second helical blade 32 is fixed on the inner wall of the material collecting hopper 3, and the second helical blade 32 is uniformly arranged along the height direction of the material collecting hopper 3. The provision of the second helical blade 32 assists in supporting the material in the annular mixing chamber 14. An auxiliary stirring device 6 for mixing and stirring the materials is arranged in the annular mixing cavity 14. The auxiliary stirring device 6 comprises a plurality of rotating shafts 61 vertically arranged in the annular mixing cavity 14, the rotating shafts 61 are uniformly distributed along the annular direction of the annular mixing cavity 14, and the upper ends of the rotating shafts 61 penetrate through the outer side wall of the stirrer body 1 and are rotatably connected with the outer side wall of the stirrer body 1; the circumferential surface of the rotating shaft 61 is fixedly connected with a first helical blade 62 along the length direction of the rotating shaft 61, and a second driving assembly 63 (shown in fig. 5) for driving all the rotating shafts 61 to rotate is arranged above the rotating shaft 61.

As shown in FIGS. 2 and 5, the mixer body 1 is provided with an annular support plate 15 around the feed port 11, the support plate 15 is coaxially provided with the mixer body 1, and the support plate 15 is fixedly connected to the outer side wall of the mixer body 1. The upper end of the rotating shaft 61 penetrates into the bottom wall of the supporting tray 15 and is rotatably connected with the bottom wall of the supporting tray 15. The second drive assembly 63 includes gears 631 coaxially affixed to the rotatable shaft 61, the gears 631 being positioned within the support tray 15, and adjacent gears 631 meshing with one another. A second motor 632 is disposed above the supporting tray 15, the second motor 632 is vertically disposed and fixed on the outer sidewall of the blender body 1, and the output shaft of the second motor 632 is coaxially and fixedly connected with one of the rotating shafts 61. When the auxiliary stirring device 6 works, the second motor 632 is started to drive the rotating shaft 61 fixedly connected with the second motor 632 to rotate, so that the gear 631 on the rotating shaft 61 rotates, and all the rotating shafts 61 in the annular mixing cavity 14 are driven to rotate through mutual engagement between the gear 631 and the gear 631, so that the first helical blade 62 mixes and stirs the materials in the annular mixing cavity 14. Due to the operation of the centrifugal evacuating device 5, the concrete materials are uniformly distributed into the annular mixing cavity 14, so that the material distribution is more dispersed, the pressure of stirring and mixing is reduced, and the efficiency of stirring and mixing in each area is improved. With the rotation of the first helical blade 62, the material in the annular mixing chamber 14 is driven to slowly displace from the gap of the second helical blade 32 into the gathering hopper 3, so that the material is gathered together.

As shown in fig. 2, a mixing mechanism 7 for mixing and stirring the materials entering the collecting hopper 3 is disposed in the middle of the collecting hopper 3. The horizontal rigid coupling of the inner wall of the fixed pipe 12 has a second supporting plate 123, the above-mentioned mixing mechanism 7 includes the driving motor 71 of vertical rigid coupling on the upper surface of the second supporting plate 123, the driving motor 71 sets up with the mixer body 1 is coaxial, the output shaft of the driving motor 71 passes through the second supporting plate 123, and the coaxial rigid coupling of the output shaft of the driving motor 71 has a connecting axle 72, the global rigid coupling of the connecting axle 72 has a plurality of stirring vane 73. After the concrete material enters the gathering hopper 3, the driving motor 71 drives the connecting shaft 72 to rotate, so that the stirring blades 73 stir the material in the gathering hopper 3, the material in the gathering hopper 3 can be gathered towards the lower port of the gathering hopper 3 along the spiral direction of the second spiral blade 32 and enters the material conveying cavity 4, the material stirring time is prolonged, and the material stirring efficiency is improved.

As shown in fig. 2, a material conveying mechanism 8 for conveying the material is provided in the material conveying chamber 4. Defeated material chamber 4 is the circular bucket that the level set up, discharge gate 41 has been seted up to the one end in defeated material chamber 4, above-mentioned defeated material mechanism 8 includes that the rigid coupling deviates from the third motor 81 of discharge gate 41 tip at defeated material chamber 4, the output shaft of third motor 81 and defeated material chamber 4 coaxial setting, and the output shaft of third motor 81 penetrates into defeated material chamber 4, the coaxial rigid coupling of third motor 81 output shaft has a transport axle 82, the length of carrying axle 82 is isometric with the length in defeated material chamber 4, the rigid coupling has third helical blade 83 on the global of transport axle 82, third helical blade 83 is even arranges on carrying axle 82, the diameter of the outer peripheral face of third helical blade 83 equals the diameter of defeated material chamber 4 inner walls. After the third motor 81 is started, the third helical blade 83 is driven to rotate, so that the material entering the material conveying cavity 4 moves towards the direction of the material outlet 41, and the material is stirred in the moving process, so that the concrete is stirred more fully.

The working process is as follows: firstly, the material enters the mixer body 1 through the feed hopper 2, at the moment, the driving motor 51 is started to drive the baffle plate 53 to rotate, and the material is uniformly thrown into the annular mixing cavity 14 in the process of contacting with the baffle plate 53, then the second motor 632 is started to drive one of the rotating shafts 61 to rotate, and through the spiral connection between the gears 631, thereby driving all the rotating shafts 61 to rotate, and enabling the first helical blades 62 to mix and stir the materials in the annular mixing cavity 14, then the stirred materials enter the gathering hopper 3, and then the driving motor 71 is started to drive the connecting shaft 72 to rotate, so that the stirring blades 73 fully stir the materials in the gathering hopper 3, then the material enters the material conveying cavity 4, the third motor 81 works to drive the third helical blade 83 to rotate, so that the material is driven by the third helical blade 83 to move towards the discharge hole 41 of the feeding cavity 4.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims

1. The utility model provides a concrete mixing equipment, includes mixer body (1), and feed inlet (11), characterized by have been seted up to mixer body (1) top: a centrifugal evacuating device (5) for evacuating raw materials is arranged in the mixer body (1) below the feeding hole (11), an annular mixing cavity (14) is arranged around the centrifugal evacuating device (5), an auxiliary stirring device (6) for mixing and stirring dispersed materials is arranged in the annular mixing cavity (14), a conveying cavity (4) is communicated with the bottom in the annular mixing cavity (14), a discharging hole (41) is formed in one end of the conveying cavity (4), and a conveying mechanism (8) for driving concrete to be discharged from the discharging hole (41) is arranged in the conveying cavity (4); the centrifugal evacuating device (5) comprises a baffle plate (53) arranged below the feed inlet (11) of the stirrer body (1) and a driving motor (51) erected in the annular mixing cavity (14) and used for driving the baffle plate (53) to rotate, a support frame (52) fixedly connected with the baffle plate (53) is arranged below the baffle plate (53), a speed regulating mechanism (55) for regulating the material conveying speed is arranged at the edge of the baffle plate (53), the speed regulating mechanism (55) comprises a plurality of position regulating plates (551) hinged at the edge of the baffle plate (53) and a first driving assembly (552) arranged in the support frame (52) and used for driving the plurality of position regulating plates (551) to rotate with the baffle plate (53) and regulating the gap between the baffle plate (53) and the inner wall of the stirrer body (1), and the driving motor (51) is vertically erected in the middle of the annular mixing cavity (14), an output shaft of the driving motor (51) is fixedly connected with the support frame (52); the first driving assembly (552) comprises a servo motor (5521) fixed above the supporting frame (52), a screw rod (5522) coaxially fixedly connected with an output shaft of the servo motor (5521), a nut (5523) in threaded connection with the screw rod (5522), and a plurality of driving rods (5524) arranged on the periphery of the nut (5523), wherein the number of the driving rods (5524) corresponds to the number of the positioning plates (551) one by one, one end of each driving rod (5524) is hinged to the lower surface of the positioning plate (551), and the other end of each driving rod (5524) is hinged to the periphery of the nut (5523).

2. A concrete mixing apparatus as defined in claim 1, wherein: the upper surface rigid coupling of striker plate (53) has a plurality of and dials board (54) to the material is stirred.

3. A concrete mixing apparatus as defined in claim 1, wherein: a plurality of rotating shafts (61) are vertically arranged in the annular mixing cavity (14), the rotating shafts (61) are rotatably connected with the stirrer body (1), a first helical blade (62) is coaxially and fixedly connected to the peripheral surface of each rotating shaft (61), and a second driving assembly (63) which simultaneously drives the plurality of rotating shafts (61) to rotate is arranged above each rotating shaft (61).

4. A concrete mixing apparatus as claimed in claim 3, wherein: the second driving assembly (63) comprises gears (631) coaxially fixedly connected to the upper end of each rotating shaft (61), the gears (631) are meshed with each other, a second motor (632) is fixedly connected to the stirrer body (1), and an output shaft of the second motor (632) is coaxially fixedly connected with one of the rotating shafts (61).

5. A concrete mixing apparatus according to claim 4, wherein: the bottom in the annular mixing cavity (14) is communicated with a gathering hopper (3), and the bottom of the gathering hopper (3) is communicated with the material conveying cavity (4).

6. A concrete mixing apparatus according to claim 5, wherein: and a second helical blade (32) is fixedly connected to the inner circumferential surface of the gathering hopper (3) along the height direction of the gathering hopper (3).

7. A concrete mixing apparatus according to claim 6, wherein: gather the material of hopper (3) the middle part be provided with carry out the compounding mechanism (7) that mix to the material after the polymerization, compounding mechanism (7) are including erectting driving motor (71) at annular mixing chamber (14) middle part, and driving motor (71) vertical setting, and the coaxial rigid coupling of output shaft of driving motor (71) has connecting axle (72), and the rigid coupling has a plurality of stirring vane (73) on the global of connecting axle (72).

8. A concrete mixing apparatus as defined in claim 1, wherein: defeated material mechanism (8) are including setting up transport axle (82) in defeated material chamber (4), carry axle (82) to lay along the length direction of defeated material chamber (4) to rotate with defeated material chamber (4) inner wall and be connected, carry axle (82) to deviate from the tip of defeated material mouth and be provided with drive and carry axle (82) pivoted third motor (81), the rigid coupling has third helical blade (83) on the global of carrying axle (82).