CN110154237B - concrete mixing equipment - Google Patents

Abstract

This invention discloses a method whose key technical features are: a feeding hopper, two distribution bins connected to and disposed at the lower end of the feeding hopper; a uniform distribution mechanism at the lower end of the feeding hopper, and a mixing device for stirring materials within each distribution bin; a mixing bin connected to the bottom of each distribution bin, and a discharge device at the bottom of the mixing bin; the uniform distribution mechanism includes a rotating roller horizontally disposed at the lower end of the feeding hopper to block it, with both ends of the rotating roller rotatably connected to the inner wall of the feeding hopper, and a drive motor for driving the rotating roller to rotate fixed to the outer wall of the feeding hopper; the two distribution bins are respectively disposed on the two end faces of the rotating roller, and a plurality of first and second feeding troughs are formed on the circumference of the rotating roller, with the first feeding troughs connected to one distribution bin and the second feeding troughs connected to the other distribution bin. The advantage of this invention is that it improves the mixing efficiency of concrete mixing equipment.

Description

concrete mixing equipment

technical field

The invention relates to the field of concrete machinery and equipment, in particular to concrete mixing equipment.

Background technique

A concrete mixer is a machine that mixes cement, sand and gravel aggregates and water into a concrete mixture. It is mainly composed of mixing drum, feeding and discharging mechanism, water supply system, prime mover, transmission mechanism, frame and supporting device. According to the working nature, it can be divided into batch type (batch type) and continuous type; according to the stirring principle, it can be divided into self-falling type and forced type; according to the installation method, it can be divided into fixed type and mobile type; According to the structure of the mixing drum, it is divided into pear type, drum type, double cone, disc vertical shaft type and circular groove horizontal shaft type.

The Chinese Patent Publication No. CN107571395A discloses a concrete mixer that is easy to open and clean. It includes a concrete mixer body, the right side of the concrete mixer body is fixedly connected with a motor and a protective cover, the motor is located inside the protective cover, the output end of the motor is fixedly connected with a rotating shaft through a coupling, the The inside of the concrete mixer body is provided with a stirring blade.

The concrete mixer needs to transport the raw materials into the concrete mixer body, and the motor drives the mixing blades to mix the raw materials in the concrete mixer body. In order to enable the raw materials to be fully mixed and stirred, the stirring time must be ensured, so that the uneven stirring is not easy to occur.

SUMMARY OF THE INVENTION

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

The above-mentioned technical purpose of the present invention is achieved through the following technical solutions:

Concrete mixing equipment, including a feeding hopper, is arranged at two sub-siloes whose lower port of the feeding hopper communicates with the feeding hopper; the lower port of the feeding hopper is provided with a uniform distribution mechanism for distributing materials to the two sub-siloes , each sub-silo is provided with a mixing device for stirring the material; the bottom of the two sub-silo is connected with a mixing silo, the mixing silo is provided with a stirring device, and the bottom of the mixing silo is provided with a discharge device;

The uniform distribution mechanism includes a rotating roller that is horizontally arranged at the lower port of the feeding hopper to block the feeding hopper. the driving motor; the two hoppers are respectively arranged in the direction of the two end faces of the rotating roller, and a number of first and second feeding troughs are opened on the peripheral surface of the rotating roller. The trough is communicated with one side of the hopper, and the second feed trough is communicated with the other side of the hopper.

Through the above technical solution, when the concrete mixing equipment is working, different materials of concrete enter into it through the feeding hopper, and then the many materials are evenly distributed into the two silos by the uniform distribution mechanism, and then the mixing device The materials in each sub-silo are mixed and stirred. By distributing the materials, the contact range between the mixing device and the material is increased, thereby improving the stirring effect of the material. Inside, the concentrated materials are mixed by the mixing device, so that the concrete mixing efficiency is higher. When the material enters the two distribution bins from the feeding hopper, the drive motor drives the rotating roller to rotate. After the material enters the feeding hopper, it contacts the peripheral surface of the rotating roller, and the material will flow into different first In the feeding trough and the second feeding trough, the materials enter into different bins; the setting of the uniform distribution mechanism can adjust the feeding speed of the materials, so that the materials can be stirred more fully.

The present invention is further provided as follows: the first feeding trough and the second feeding trough are provided with conveying components that drive the material to be transported to the silos on both sides;

The conveying assembly includes a conveying shaft arranged in the first feeding chute and the second feeding chute, the conveying shaft is arranged along the length direction of the first feeding chute and the second feeding chute, and the conveying shaft is connected with the first feeding chute and the second feeding chute. The feeding chute and the inner wall of the second feeding chute are rotatably connected, one end of each conveying shaft is provided with a conveying motor that drives the conveying shaft to rotate, and a first spiral blade is fixed on the peripheral surface of the conveying shaft, and the rotating Inside the rollers there are chambers for each conveying motor.

Through the above technical solution, when the rotating roller rotates, the conveying motor starts to drive the conveying shaft to rotate, so that the first helical blade rotates to convey the material. And the accumulation in the second feeding trough improves the efficiency of material conveying. The conveying motor is arranged in the chamber, which not only saves space, but also avoids direct contact with the material and reduces the damage of the conveying motor.

The present invention is further provided as follows: a discharge port is provided at the bottom center of the material distribution bin, the mixing device comprises a stirring shaft arranged in the material distribution bin, and a plurality of stirring blades fixed on the peripheral surface of the stirring shaft, and a stirring motor arranged on the upper end of the stirring shaft to drive the stirring shaft to rotate, the lower end of the stirring shaft is fixedly connected with a material blocking block that blocks the discharge port, and the upper surface of the material distribution bin is vertically fixed with a control the lifting and lowering of the stirring shaft. Hydraulic cylinder, the piston rod of the hydraulic cylinder is fixed on the stirring motor.

Through the above technical solution, when the material enters the inside of the silo, the stirring motor starts to drive the stirring shaft to rotate, so that the stirring blade mixes and stirs the material inside the silo. When the material is stirred, the hydraulic cylinder drives the stirring. The shaft moves up and down, so that the stopper is released from the blocking of the discharge port, so that the material in the distribution bin falls into the mixing bin below. When the hydraulic cylinder drives the stopper to move up and down, it also improves the discharge. The material efficiency is reduced, and the blockage of the material at the discharge port is reduced.

The present invention is further provided as follows: the stirring shaft comprises a vertical shaft fixed coaxially with the stirring motor, and a screw shaft fixed on the lower end of the vertical shaft; the stirring blade is fixed on the peripheral surface of the vertical shaft; The material block is fixed on the lower end of the screw shaft.

Through the above technical solution, when the material enters the bottom of the hopper, the force between the bottom materials is relatively large, and the setting of the screw shaft can reduce the force of the material on the stirring shaft during the process of rotating through its own spiral structure. The service life of the stirring shaft is prolonged, and when the screw shaft rotates, it also plays a role in mixing and stirring the materials in the hopper; the vertical shaft is located above the screw shaft, and the force between the materials is relatively small, so When the stirring blade rotates, it also plays a role in mixing and stirring the materials located above.

The present invention is further provided as follows: several auxiliary stirring rods are arranged in the screw shaft, and both ends of the auxiliary stirring rods are fixedly connected to the inner side wall of the screw shaft.

Through the above technical solution, the arrangement of the auxiliary stirring rod not only increases the strength of the screw shaft, but also reduces the deformation during the rotation of the screw shaft, and when the screw shaft rotates, the auxiliary stirring rod also mixes the materials inside the hopper. The effect of stirring.

The present invention is further provided that: the blocking block comprises a first sharp cone and a second sharp cone arranged vertically, and the end faces of the first sharp cone and the second sharp cone are fixed to each other.

Through the above technical solution, when the hydraulic cylinder drives the mixing shaft to move up and down, the first and second sharp cones have the function of draining and guiding the concrete material due to their own structures, thereby reducing the support of the block to the concrete material. The burden of reducing the pressure of hydraulic cylinder work.

The present invention is further provided that: the stirring device comprises an active motor erected in the mixing bin, and a stirring ball fixed on the output shaft of the active motor.

Through the above technical solution, when all the materials enter the mixing bin, the active motor works to drive the stirring ball to rotate, so that the stirring ball mixes and stirs the materials in the mixing bin. Since the stirring ball is spherical, it is more stable during the rotation of the stirring ball.

The present invention is further provided as: the stirring ball is a sphere formed by a plurality of arc-shaped rods fixedly connected.

Through the above technical solution, the setting of the arc-shaped rod increases the contact area between the material and the stirring ball. When the stirring ball is rotating, the arc-shaped rod acts as a toggle to the material, thereby improving the flow effect of the material.

To sum up, the present invention has the following beneficial effects:

1. Improve the mixing efficiency of materials. The materials are evenly distributed into the two sub-bins through the feeding hopper, and then the materials in the sub-bins are mixed and stirred by the mixing device in the sub-bin, and then the materials in the two sub-bins enter the mixing bin. Carry out centralized treatment, and then carry out mixing and stirring again, thereby improving the mixing and mixing efficiency of materials;

2. Intelligently control the feeding speed, the staff can adjust the working speed of the drive motor according to the usage, and intelligently control the speed of the material entering the two sub-silo, so that the material in the two sub-silo can be stirred more fully.

Description of drawings

1 is a schematic diagram of the overall structure of a concrete mixing plant;

Fig. 2 is the structural schematic diagram that embodies the uniform distribution mechanism;

Fig. 3 is the internal structure schematic diagram that embodies the mixing device;

FIG. 4 is a schematic view showing the structure of the stirring device.

In the figure, 1. Feeding hopper; 11. Connecting port; 2. Distributing bin; 21. Discharging port; 3. Mixing bin; 4. Feeding bin; 41. Discharging port; 5. Uniform distribution mechanism; 51, rotating roller; 511, first feeding chute; 512, second feeding chute; 52, driving motor; 53, cavity; 54, conveying assembly; 541, conveying shaft; 542, first spiral blade; 543, Conveying motor; 544, cover plate; 6, mixing device; 61, hydraulic cylinder; 62, shell; 63, stirring motor; 64, stirring shaft; 641, vertical shaft; 642, screw shaft; 65, stirring blade; 66 , block; 661, the first cone; 662, the second cone; 67, auxiliary stirring rod; 7, stirring device; 71, active motor; 72, stirring ball; 721, arc rod; 8, feeding device; 81, feeding shaft; 82, second spiral blade; 83, feeding motor; 9, outrigger.

Detailed ways

The concrete mixing equipment, as shown in Figure 1, includes a feeding hopper 1, and two sub-silo 2 are vertically arranged below the feeding hopper 1, and the feeding hopper 1 and the two sub-silo 2 are communicated with each other; The bottom of the silo 2 is connected with a mixing silo 3; the bottom of the mixing silo 3 is horizontally provided with a conveying silo 4, the conveying silo 4 and the mixing silo 3 are communicated with each other, and the conveying silo 4 is provided with a drive concrete from the conveying material. For the conveying device 8 discharged from the bin 4, the peripheral surface of the mixing bin 3 is vertically fixed with four outriggers 9.

As shown in Figure 2, the upper end of the feeding hopper 1 is sealed, and four communication ports 11 for communicating different materials are opened on the upper end surface of the feeding hopper 1, so as to facilitate the injection of concrete materials into the hopper.

As shown in FIG. 1 and FIG. 2 , the lower port of the feeding hopper 1 is provided with an even distribution mechanism 5 for evenly distributing the materials to the two distribution bins 2 . The uniform distribution mechanism 5 includes a rotating roller 51 that is horizontally arranged at the lower port of the feeding hopper 1 and blocks the lower port of the feeding hopper 1. The two ends of the rotating roller 51 face the bin 2 on both sides respectively. The end is rotatably connected with the inner walls on both sides of the feeding hopper 1, and a driving motor 52 is fixedly connected to the outer wall of the feeding hopper 1. The output shaft of the driving motor 52 penetrates into the hopper and is coaxially fixed with the rotating roller 51; the rotating roller Two first feeding grooves 511 and two second feeding grooves 512 are respectively opened on the peripheral surface of 51. The first feeding groove 511 and the second feeding groove 512 are respectively opened along the length direction of the rotating roller 51. A feeding slot 511 and a second feeding slot 512 are arranged at intervals on the peripheral surface of the rotating roller 51 , the first feeding slot 511 penetrates one end of the rotating roller 51 , and the second feeding slot 512 penetrates the other One end penetrates.

When the material enters the inside of the feeding hopper 1 through the feeding hopper 1, the material will be blocked by the rotating roller 51. At this time, the driving motor 52 is activated, thereby driving the rotating roller 51 to rotate, so that the material randomly enters the rotating roller 51. into the first feeding slot 511 and the second feeding slot 512 on the opposite side, and make the material flow into the silo 2 on both sides through the openings of the first feeding slot 511 and the second feeding slot 512 respectively, and pass through evenly. The distribution of materials by the distribution mechanism 5 enables multiple and distribution bins 2 to work at the same time, which not only increases the capacity of material processing, but also makes the materials in the distribution bin 2 more fully stirred.

As shown in FIG. 2, in order to reduce the occurrence of material clogging in the first feeding slot 511 and the second feeding slot 512, the first feeding slot 511 and the second feeding slot 512 are provided with a device to drive the material to both sides. The conveying component 54 for conveying materials in the silo 2 . Each first feeding slot 511 is far away from the first feeding slot 511 and a certain distance is maintained between the opening side of the rotating roller 51 and the other end of the rotating roller 51. The rotating roller 51 defines a cavity 53 in this area. The second feeding slot 512 is far away from the second feeding slot 512 and a certain distance is maintained between the opening side of the rotating roller 51 and the other end of the rotating roller 51, and the outer peripheral surface of the rotating roller 51 also has a corresponding cavity 53 in this area. The above-mentioned conveying assembly 54 includes a conveying shaft 541 disposed in the first feeding slot 511 and the second feeding slot 512. The conveying shaft 541 is arranged along the length direction of the first feeding slot 511 and the second feeding slot 512. A first helical blade 542 is fixed on the peripheral surface of 541, the first helical blade 542 is arranged along the length direction of the conveying shaft 541, and one end of the conveying shaft 541 penetrates into the adjacent cavity 53 and rotates with the inner side wall of the cavity 53 Connecting, each cavity 53 of the rotating roller 51 is provided with a conveying motor 543, the conveying motor 543 is fixedly connected with the side wall where the conveying shaft 541 penetrates, and the output shaft of the conveying shaft 541 is coaxially fixed with the conveying shaft 541. Each cavity 53 of the roller 51 is provided with a cover plate 544 that covers the opening of the cavity 53 through bolts, so that it is difficult for materials to enter the cavity 53 .

When the material enters the inside of the feeding hopper 1, the driving motor 52 starts to drive the rotating roller 51 to rotate, the material will enter into each of the first feeding chute 511 and the second feeding chute 512 in sequence, and then the conveying motor 543 is activated to drive The first helical blade 542 rotates, so that the materials in the first feeding chute 511 and the second feeding chute 512 enter the two distribution bins 2 respectively. The staff can adjust the speed of the driving motor 52 to adjust the distribution. The amount of material fed in the silo 2 can be adjusted to adjust the mixing efficiency of the materials in the two sub-silo 2, so that the material can be stirred more fully.

As shown in FIG. 3 , the hopper 2 is packed in barrels. The bottom center of the hopper 2 is provided with a discharge port 21 that communicates with the interior of the mixing hopper 3. The hopper 2 is provided with a device for mixing and stirring the materials. The mixing device 6, the mixing device 6 includes a hydraulic cylinder 61 vertically arranged on the top of the sub-silo 2, the hydraulic cylinder 61 is coaxially arranged with the sub-silo 2, and the piston rod of the hydraulic cylinder 61 penetrates into the feed-silo 2 The end of the piston rod of the hydraulic cylinder 61 is fixed with a casing 62, and a stirring motor 63 is vertically fixed in the casing 62. The stirring motor 63 is arranged coaxially with the hopper 2, and the output shaft of the stirring motor 63 passes through A stirring shaft 64 is coaxially fixed to the outside of the casing 62 . The peripheral surface of the stirring shaft 64 is provided with a number of stirring blades 65 for stirring the materials inside the hopper 2 , and a pair of discharging materials is arranged at the bottom of the stirring shaft 64 . The stopper 66 for blocking the port 21 . The arrangement of the casing 62 has a protective effect on the stirring motor 63, reducing the occurrence of water inflow in the casing 62, thereby making the stirring motor 63 work more stably.

As shown in FIG. 3 , the stirring shaft 64 includes a vertical shaft 641 that is coaxially fixed to the output shaft of the stirring motor 63 , and a screw shaft 642 that is fixedly connected to the other end of the vertical shaft 641 . The screw shaft 642 is along the height direction of the bin 2 . Arrangement, the end of the screw shaft 642 is vertically arranged and on the same line as the vertical shaft 641 , the block 66 is fixed on the end of the screw shaft 642 , and the stirring blade 65 is fixed on the peripheral surface of the vertical shaft 641 . When the mixing device 6 is in operation, the stirring motor 63 drives the vertical shaft 641 to rotate, so that the stirring blades 65 stir the materials in the distribution bin 2. With the accumulation of materials, the material at the bottom of the distribution bin 2 bears the force However, the force between the materials located in the upper part of the hopper 2 is relatively small, so that the stirring pressure of the stirring blade 65 is lighter, so that the stirring blade 65 is not easily damaged. During the rotation of the screw shaft 642, due to the helical structure of the screw shaft 642, when the screw shaft 642 rotates, the friction between the screw shaft 642 and the material can be reduced, and the material can be stirred, thereby improving the The mixing effect of the material is achieved. Several auxiliary stirring rods 67 are arranged in the inner space enclosed by the screw shaft 642, and the two ends of the auxiliary stirring rod 67 are respectively fixedly connected with the inner wall of the screw shaft 642. In addition, when the screw shaft 642 rotates, the setting of the auxiliary stirring rod 67 also increases the contact area with the material, thereby improving the stirring efficiency of the material.

As shown in FIG. 3 , the blocking block 66 includes vertically arranged first sharp cones 661 and second sharp cones 662 , the first sharp cones 661 and the second sharp cones 662 have the same size, and the first sharp cones 661 and the second sharp cones have the same size. The size of the end face of the biconical cone 662 is the same as the size of the discharge port 21 , and the end faces of the first pointed cone 661 and the second pointed cone 662 are fixed to each other, so that the tips of the first pointed cone 661 and the second pointed cone 662 are upright and upright, respectively. straight down. When the stopper block 66 is in the initial position, the stopper block 66 is located at the discharge port 21 of the distribution bin 2, so that it is not easy for the material to enter the mixing bin 3 through the distribution bin 2. The hydraulic cylinder 61 is activated to drive the stirring shaft 64 to move up and down, so that the blocking block 66 is far away from the discharge port 21 of the distributing bin 2, so that the materials in the distributing bin 2 can enter the mixing bin 3 through the discharging port 21. Since the upper and lower ends of the stopper 66 are tapered, the friction between the stopper 66 and the material is reduced, so that the up and down movement of the stirring shaft 64 is more convenient; and when the stopper 66 moves up and down the process It also plays a role in dredging the material, reducing the blockage of the material at the discharge port 21.

As shown in FIG. 4 , the mixing bin 3 is in the shape of a circular bucket. The mixing bin 3 is provided with a stirring device 7 for stirring the mixed materials. The stirring device 7 includes a vertical arrangement on the mixing bin 3 The active motor 71 on the surface, the active motor 71 and the mixing bin 3 are coaxially arranged, the active motor 71 is fixed on the upper surface of the mixing bin 3, and the output shaft of the active motor 71 penetrates into the mixing bin 3, and the active motor 71 penetrates into the mixing bin 3. A stirring ball 72 is fixed on the output shaft of the motor 71 . The stirring ball 72 is a spherical skeleton composed of several arc-shaped rods 721 , and two ends of the arc-shaped rods 721 are fixedly connected to the adjacent arc-shaped rods 721 . When the active motor 71 drives the stirring ball 72 to rotate, the arc-shaped rod 721 is in contact with the concrete material and stirs the material. Since the contour of the ball is relatively stable, the force of the material on the stirring ball 72 can be reduced, so that the While stirring, the force between the arc-shaped rod 721 and the material is also reduced, thereby improving the stirring efficiency of the stirring ball 72 for the material.

As shown in FIG. 4 , the conveying bin 4 is in the shape of a horizontally arranged barrel, and one end of the conveying bin 4 is provided with a discharging port 41 . The shaft 81 is arranged coaxially with the feeding bin 4, and the end of the feeding shaft 81 away from the discharge port 41 is rotatably connected with the feeding bin 4. A second spiral blade 82 is fixed on the peripheral surface of the feeding shaft 81. The spiral blades 82 are distributed along the length direction of the feeding shaft 81, and a feeding motor 83 is fixed on the end face of the feeding bin 4 away from the discharging port 41. The feeding motor 83 is coaxially arranged with the feeding bin 4, and the feeding motor The output shaft of 83 penetrates into the feeding bin 4 and is fixed coaxially with the feeding shaft 81 . When the concrete material in the mixing bin 3 enters into the conveying bin 4, the conveying motor 83 is started, so that the material in the conveying bin 4 moves to the outlet of the conveying bin 4 along with the spiral rotation of the second helical blade 82. The material port 41 moves in the direction. During this process, the material is also stirred during the conveying process, thereby improving the stirring effect of the material. The final material is discharged to the outside of the conveying bin 4 through the discharge port 41 .

Working process: The material required for concrete enters the bottom of the feeding hopper 1 through the feeding hopper 1, and then the driving motor 52 is started to drive the rotating roller 51 to rotate, so that the material enters the first feeding trough 511 and the second feeding. In the groove 512, the conveying motor 543 starts to drive the first helical blade 542 to rotate, so that the material evenly enters the two different silos 2, which is convenient for dispersing the material, and then the stirring motor 63 drives the stirring shaft 64 to rotate , so as to mix and stir the materials in the sub-silo 2. After the materials in the sub-silo 2 are fully stirred, the hydraulic cylinder 61 drives the stirring shaft 64 to move up and down, so that the blocking block 66 is kept away from the discharge of the sub-silo 2. port 21, and make the material inside the distribution bin 2 enter into the mixing bin 3 through the discharge port 21, and then the active motor 71 drives the stirring ball 72 to rotate, so that the material is fully mixed and stirred again, thereby improving the mixing and stirring. s efficiency. Then the material flows into the feeding bin 4, and the concrete is discharged through the helical rotation of the second helical blade 82.

This specific embodiment is only an explanation of the present invention, and it does not limit the present invention. Those skilled in the art can make modifications without creative contribution to the present embodiment as required after reading this specification, but as long as the rights of the present invention are used All claims are protected by patent law.

Claims (7)

1. Concrete mixing equipment, characterized by: comprises a feed hopper (1) and two material distribution bins (2) which are arranged at the lower end of the feed hopper (1) and are communicated with the feed hopper (1); a lower port of the feed hopper (1) is provided with a uniform distribution mechanism (5) for distributing materials to the two material distribution bins (2), and a material mixing device (6) for stirring the materials is arranged in each material distribution bin (2); the bottoms of the two material distribution bins (2) are communicated with each other to form a mixing bin (3), a stirring device (7) is arranged in the mixing bin (3), and a discharging device is arranged at the bottom of the mixing bin (3);

the uniform distribution mechanism (5) comprises a rotating roller (51) which is horizontally arranged at the lower end of the feed hopper (1) and used for plugging the feed hopper (1), two ends of the rotating roller (51) are rotatably connected with the inner wall of the feed hopper (1), and the outer side wall of the feed hopper (1) is fixedly connected with a driving motor (52) for driving the rotating roller (51) to rotate; the two material distribution bins (2) are respectively arranged in the directions of two end faces of the rotating roller (51), the circumferential surface of the rotating roller (51) is provided with a plurality of first feeding grooves (511) and second feeding grooves (512), the first feeding grooves (511) are mutually communicated with the material distribution bin (2) on one side, and the second feeding grooves (512) are mutually communicated with the material distribution bin (2) on the other side; the first feeding groove (511) and the second feeding groove (512) are internally provided with a conveying assembly (54) for driving materials to be conveyed to the material distributing bins (2) at two sides;

the conveying assembly (54) comprises conveying shafts (541) arranged in a first feeding groove (511) and a second feeding groove (512), the conveying shafts (541) are arranged along the length direction of the first feeding groove (511) and the second feeding groove (512), the conveying shafts (541) are rotatably connected with the inner walls of the first feeding groove (511) and the second feeding groove (512), one end of each conveying shaft (541) is provided with a conveying motor (543) for driving the conveying shaft (541) to rotate, first spiral blades (542) are fixedly connected to the circumferential surface of each conveying shaft (541), and a chamber for accommodating each conveying motor (543) is formed in the rotating roller (51).

2. The concrete mixing apparatus of claim 1, wherein: bin outlet (21) have been seted up to the bottom central point of branch feed bin (2), compounding device (6) are including setting up (mixing) shaft (64) in branch feed bin (2), a plurality of stirring vane (65) that the rigid coupling is global in (mixing) shaft (64) to and set up in (mixing) shaft (64) upper end drive (mixing) shaft (64) pivoted agitator motor (63), the lower extreme rigid coupling of (mixing) shaft (64) has one to keep off material piece (66) of bin outlet (21) shutoff, the vertical rigid coupling of upper surface of branch feed bin (2) has a pneumatic cylinder (61) that control (mixing) shaft (64) goes up and down, and the piston rod rigid coupling of pneumatic cylinder (61) is on agitator motor (63).

3. The concrete mixing apparatus of claim 2, wherein: the stirring shaft (64) comprises a vertical shaft (641) coaxially and fixedly connected with the stirring motor (63) and a spiral shaft (642) fixedly connected to the lower end of the vertical shaft (641), the stirring blades (65) are fixedly connected to the peripheral surface of the vertical shaft (641), and the material blocking block (66) is fixedly connected to the lower end of the spiral shaft (642).

4. The concrete mixing apparatus of claim 3, wherein: a plurality of auxiliary stirring rods (67) are arranged in the spiral shaft (642), and two ends of each auxiliary stirring rod (67) are fixedly connected to the inner side wall of the spiral shaft (642).

5. The concrete mixing apparatus of claim 4, wherein: the material blocking block (66) comprises a first pointed cone (661) and a second pointed cone (662) which are vertically arranged, and the end surfaces of the first pointed cone (661) and the second pointed cone (662) are fixed with each other.

6. The concrete mixing apparatus of claim 1, wherein: the stirring device (7) comprises a driving motor (71) erected in the mixing bin (3) and a stirring ball (72) fixedly connected to an output shaft of the driving motor (71).

7. The concrete mixing apparatus of claim 6, wherein: the stirring ball (72) is a sphere formed by fixedly connecting a plurality of arc-shaped rods (721).

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