CN113117592A

CN113117592A - Powder conveying system for mixing materials based on building concrete additive

Info

Publication number: CN113117592A
Application number: CN202110597422.1A
Authority: CN
Inventors: 尹帅
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-05-31
Filing date: 2021-05-31
Publication date: 2021-07-16

Abstract

The invention discloses a powder conveying system for mixing materials based on building concrete additives, which comprises an outer box, wherein the top of the outer box is fixedly connected with a charging basket through a support frame, a quantitative conveying mechanism is arranged inside the outer box, the bottom of the inner wall of the outer box is fixedly connected with a protective cover, the back of the protective cover is fixedly connected with the back of the inner wall of the outer box, and the right side of the inner wall of the protective cover is provided with a stirring mechanism. This powder conveying system for compounding based on building concrete additive can accomplish the ration of material through quantitative conveying mechanism and weigh in transportation process, need not practical solitary subassembly of weighing, has reduced the operating pressure of follow-up equipment, and has reduced the manufacturing cost of equipment, reduces the use cost of enterprise, in addition, each other does not influence between unloading pipe unloading and the discharge channel ejection of compact, need not to wait for and arranges the material and just can carry out follow-up unloading after accomplishing, has effectively improved work efficiency.

Description

Powder conveying system for mixing materials based on building concrete additive

Technical Field

The invention relates to the technical field of powder conveying, in particular to a powder conveying system for mixing materials based on a building concrete additive.

Background

The concrete additive means a substance blended for improving and adjusting the performance of concrete. The application of the concrete additive in engineering is more and more emphasized, the use of the additive plays a certain role in improving the performance of concrete, and the processing flow of the building concrete additive generally comprises the processes of raw material crushing, grinding and mixing, so that after the grinding of the materials is finished, the materials need to be conveyed to mixing equipment by using a conveying system.

The first case 2 with the publication number of CN106044290A discloses a powder conveying real-time weight measuring system, which can measure the materials in the pipeline in real time, and has simple structure, convenient installation and high measuring efficiency;

comparative example 1, publication No. CN102837968B, discloses a powder delivery system, which allows powder to be delivered in a closed environment without diffusing into the atmosphere and causing damage to human body or equipment.

However, the above reference case still has the following drawbacks:

1) although the real-time measurement of the powder can be realized in the comparison case 1, the powder is difficult to quantitatively convey according to actual use requirements, so that the powder needs to be weighed before entering the subsequent mixing equipment, the working pressure of the subsequent mixing equipment is increased, and the next weighing operation can be performed only after the powder enters the subsequent mixing equipment in the weighing process, so that the working efficiency is influenced;

2) although contrast case 2 can realize the accurate calculation to the powder, but need wait for the measurement that the material just can carry out next time after discharging in transportation process, and have the great powder of granularity to carry in the concrete additive usually, and the mode of carrying through compressed gas causes part material easily and carries the failure to cause the material to pile up, influences the normal operating of system.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a powder conveying system for mixing based on a building concrete additive, which solves the problems that the powder is difficult to convey quantitatively according to the actual use requirement, the powder needs to be weighed before entering the subsequent mixing equipment, the working pressure of the subsequent equipment is increased, the next weighing operation can be carried out only after the powder enters the subsequent mixing equipment in the weighing process, the working efficiency is influenced, and the pipeline is blocked due to the fact that the powder is easy to accumulate.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a powder conveying system for compounding based on building concrete additive, includes the outer container, support frame fixedly connected with storage bucket is passed through at the top of outer container, the inside of outer container is provided with quantitative conveying mechanism, the bottom fixedly connected with protection casing of outer container inner wall to the back of protection casing and the back fixed connection of outer container inner wall, the right side of protection casing inner wall is provided with toggle mechanism.

The quantitative conveying mechanism comprises a driving shaft and a driven shaft, wherein the surfaces of the driving shaft and the driven shaft are fixedly connected with a first gear, a second gear and a third gear respectively, the first gear, the second gear and the third gear are connected in a transmission mode through a first chain, a second chain and a third chain respectively, material frames are arranged between the first chain and the second chain and between the second chain and the third chain respectively, a weighing device is fixedly connected to the bottom of the inner wall of each material frame, and a shaking assembly is arranged at the bottom of each material frame.

The shaking assembly comprises two rotating blocks which are connected with the second chain in a rotating mode through a connecting shaft, two supporting rods are fixedly connected to the tops of the rotating blocks, the top ends of the two supporting rods are connected with the movable block in a rotating mode through a rotating shaft, the top of the movable block is connected with the bottom of the material frame in a sliding mode through a limiting sliding rail, a fixed plate is fixedly connected to the bottom of the material frame, and a first spring is fixedly connected between the fixed plate and one side, opposite to the movable block, of the fixed plate.

The poking mechanism comprises a front limiting plate and a rear limiting plate which are fixed on the right side of the inner wall of the protective cover, a poking plate is rotatably connected between one opposite sides of the two limiting plates through a rotating shaft, and a second spring is fixedly connected between the right side of the poking plate and the right side of the inner wall of the protective cover.

Preferably, quantitative conveying mechanism still includes the carriage through the bottom sliding connection of direction slide rail and outer container inner wall and fixes two positive first pneumatic cylinders at the outer container, two the output of first pneumatic cylinder all with the positive fixed connection of carriage, the positive upper left corner position of carriage passes through the first motor of backup pad fixedly connected with.

Preferably, the one end of driving shaft is connected with the dorsal rotation of carriage inner wall, the other end of driving shaft extends to the outside of carriage 42, and with the output fixed connection of first motor 44, the driven shaft is provided with threely, and three driven shaft passes through the bearing and rotates the connection between the front and the back of carriage inner wall.

Preferably, the left top fixedly connected with striker plate of protection casing to the bottom intercommunication of protection casing has the discharge passage who runs through to outer container below, the bottom fixedly connected with supporting leg of outer container.

Preferably, the bottom intercommunication of storage bucket has the unloading pipe that runs through to the outer container inside to the top fixedly connected with feeder hopper of storage bucket, the top of outer container just is located the equal fixedly connected with second pneumatic cylinder in both sides of unloading pipe.

Preferably, the output end of the second hydraulic cylinder penetrates through the inner part of the outer box, the output end of the second hydraulic cylinder is fixedly connected with a movable plate, and one end of the blanking pipe, which is positioned in the inner part of the outer box, extends to the lower part of the movable plate.

Preferably, the inside of storage bucket is provided with prevents stifled mechanism, prevent stifled mechanism including fixing the motor frame in storage bucket inner wall bottom through the support, the top fixedly connected with second motor of motor frame inner wall.

Preferably, the output end of the second motor is fixedly connected with a rotating rod which penetrates through the lower part of the motor frame and extends to the inner part of the discharging pipe, and the surface of the rotating rod is fixedly connected with a spiral discharging plate.

Preferably, the material frames between the first chain and the second chain and between the second chain and the third chain are arranged at intervals in a staggered mode, and the width between the front wall and the rear wall of the protective cover is larger than 1.5 times of the width between the front wall and the rear wall of the supporting frame.

(III) advantageous effects

The invention provides a powder conveying system for mixing materials based on a building concrete additive. Compared with the prior art, the method has the following beneficial effects:

(1) the powder conveying system for mixing the building concrete additive is characterized in that a quantitative conveying mechanism is arranged in an outer box, the first gears, the second gears and the third gears are in transmission connection through a first chain, a second chain and a third chain respectively, the material frames are arranged between the first chain and the second chain and between the second chain and the third chain, the bottom of the inner wall of the material frame is fixedly connected with the weighers, the quantitative conveying mechanism can weigh materials in the conveying process, an independent weighing and distributing assembly is not needed, the working pressure of subsequent equipment is reduced, the production cost of the equipment is reduced, and the use cost of enterprises is reduced, in addition, the blanking process of the blanking pipe and the discharging process of the discharging channel are not affected, the subsequent blanking weighing work can be carried out without waiting for the completion of discharging, and the working efficiency is effectively improved.

(2) This powder conveying system for compounding based on building concrete additive, include the carriage through the bottom sliding connection of direction slide rail and outer container inner wall and fix two positive first pneumatic cylinders at the outer container through quantitative conveying mechanism, all be provided with the material frame between first chain and the second chain and between second chain and the third chain, the output of two first pneumatic cylinders all with the positive fixed connection of carriage, first pneumatic cylinder work can promote the carriage seesaw, thereby drive the material frame seesaw, make the material frame seesaw in the unloading, the unloading is more even, thereby prevent to arrange the material passageway and block up, in addition, adopt the material frame to carry and can avoid the phenomenon of the heavy transport failure who causes because of the big weight of material granularity to take place, use reliability is improved.

(3) This powder conveying system for compounding based on building concrete additive, right side through the protection casing inner wall is provided with toggle mechanism, toggle mechanism is including fixing two limiting plates in the front and back on protection casing inner wall right side, rotate through the pivot between the relative one side of two limiting plates and be connected with the stirring board, the bottom of material frame is provided with the shake subassembly, the first spring of fixedly connected with between the relative one side of fixed plate and movable block, during the unloading of material frame, toggle mechanism and shake subassembly mutually support, can make the material frame take place the shake, thereby make the material can not the adhesion on material frame inner wall, improve the precision of the material of carrying, be favorable to improving finished product quality.

(4) This powder conveying system for compounding based on building concrete additive, inside through the storage bucket is provided with prevents stifled mechanism, prevent stifled mechanism including fixing the motor frame in storage bucket inner wall bottom through the support, the top fixedly connected with second motor of motor frame inner wall, the output fixedly connected with of second motor runs through to the below of motor frame and extends to the inside dwang of unloading pipe, the surperficial fixedly connected with spiral unloading board of dwang, prevent that stifled mechanism can prevent that the material in the storage bucket from piling up the feed opening department at the unloading pipe, thereby prevent that the unloading pipe from blockking up, the practicality has been improved.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a cross-sectional view of the present invention;

FIG. 3 is a cross-sectional view of the metered dose delivery mechanism of the present invention;

FIG. 4 is an enlarged view of a portion of the invention at A in FIG. 3;

FIG. 5 is a top cross-sectional view of the present invention;

FIG. 6 is a partial perspective view of the metered dose delivery mechanism of the present invention;

FIG. 7 is a cross-sectional view of a dithering assembly of the present invention;

FIG. 8 is a perspective view of the material frame structure of the present invention;

FIG. 9 is a perspective view of the shield, striker plate and discharge passage of the present invention;

FIG. 10 is a perspective view of the toggle mechanism of the present invention;

FIG. 11 is a cross-sectional view of the anti-clogging mechanism of the present invention;

fig. 12 is a schematic block diagram of the blanking pipe in the invention.

In the figure, 1 an outer box, 2 supporting legs, 3 buckets, 4 quantitative conveying mechanisms, 41 guide sliding rails, 42 supporting frames, 43 first hydraulic cylinders, 44 first motors, 45 driving shafts, 46 driven shafts, 47 first gears, 48 second gears, 49 third gears, 410 first chains, 411 second chains, 412 third chains, 413 material frames, 414 weighters, 415 shaking assemblies, 4151 rotating blocks, 4152 supporting rods, 4153 moving blocks, 4154 limiting sliding rails, 4155 fixing plates, 4156 first springs, 5 protective covers, 6 stirring mechanisms, 61 limiting plates, 62 stirring plates, 63 second springs, 7 retaining plates, 8 discharging channels, 9 discharging pipes, 10 feed hoppers, 11 second hydraulic cylinders, 12 movable plates, 13 anti-blocking mechanisms, 131 motor frames, 132 second motors, 133 and 134 spiral discharging plates.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2 and fig. 12, an embodiment of the present invention provides a technical solution: the utility model provides a based on powder conveying system for building concrete additive compounding, including outer container 1, the front of outer container 1 is fixed with control panel, and be provided with the controller in the control panel, control panel and the input electric connection of weighing device 414's output all through wire and controller, and the output of controller passes through wire and the input electric connection of second pneumatic cylinder 11, support frame fixedly connected with storage bucket 3 is passed through at the top of outer container 1, the inside of outer container 1 is provided with quantitative conveying mechanism 4, the bottom fixedly connected with protection casing 5 of outer container 1 inner wall, and the back fixed connection of the back of protection casing 5 and outer container 1 inner wall, the right side of protection casing 5 inner wall is provided with toggle mechanism 6.

Referring to fig. 3, 5 and 6, in the embodiment of the present invention, the quantitative conveying mechanism 4 includes a driving shaft 45 and a driven shaft 46, the surfaces of the driving shaft 45 and the driven shaft 46 are fixedly connected with a first gear 47, a second gear 48 and a third gear 49, the first gear 47, the second gear 48 and the third gear 49 are respectively in transmission connection with a first chain 410, a second chain 411 and a third chain 412, a material frame 413 is respectively disposed between the first chain 410 and the second chain 411 and between the second chain 411 and the third chain 412, the bottom of the inner wall of the material frame 413 is fixedly connected with a weighing device 414, the weighing device 414 is composed of a weighing sensor, and is a device for converting a quality signal into an electric signal to output, and is used for detecting the weight value of an article, the bottom of the material frame 413 is provided with a shaking assembly 415, after the first chain 410, the second chain 411 and the third chain 412 move for one circle, the first motor 44 will rotate to reposition the chain to prevent the connecting wires or the like from becoming entangled.

Referring to fig. 7-8, in the embodiment of the present invention, the shaking assembly 415 includes two rotating blocks 4151 rotatably connected to the second chain 411 through a connecting shaft, the top portions of the two rotating blocks 4151 are both fixedly connected to a supporting rod 4152, the top ends of the two supporting rods 4152 are rotatably connected to a movable block 4153 through a rotating shaft, the top portion of the movable block 4153 is slidably connected to the bottom portion of the material frame 413 through a limiting slide rail 4154, the bottom portion of the material frame 413 is fixedly connected to a fixing plate 4155, and a first spring 4156 is fixedly connected between the fixing plate 4155 and the opposite side of the movable block 4153, and the shaking assembly 415 can shake the material frame 413 under the resilience force of the first spring 4156.

Referring to fig. 4 and 10, in the embodiment of the present invention, the toggle mechanism 6 includes two front and rear limiting plates 61 fixed on the right side of the inner wall of the protection cover 5, a toggle plate 62 is rotatably connected between opposite sides of the two limiting plates 61 through a rotating shaft, a second spring 63 is fixedly connected between the right side of the toggle plate 62 and the right side of the inner wall of the protection cover 5, and the toggle mechanism 6 can toggle the material frame 413, so as to prevent the material from adhering to the inner wall of the material frame 413, which is beneficial to improving the processing accuracy.

Referring to fig. 2-3 and 5-6, in the embodiment of the present invention, the quantitative conveying mechanism 4 further includes a supporting frame 42 slidably connected to the bottom of the inner wall of the outer box 1 through a guiding sliding rail 41, and two first hydraulic cylinders 43 fixed to the front surface of the outer box 1, the guiding sliding rail 41 can play a guiding role when the supporting frame 42 moves forward and backward, the output ends of the two first hydraulic cylinders 43 are both fixedly connected to the front surface of the supporting frame 42, the upper left corner of the front surface of the supporting frame 42 is fixedly connected to a first motor 44 through a supporting plate, the first motor 44 is a servo motor, and is of the type JSF60-15-30-CF-1000, and is electrically connected to an external power supply and a control system through a wire, one end of the driving shaft 45 is rotatably connected to the back surface of the inner wall of the supporting frame 42, the other end of the driving shaft 45 extends to the outside of the supporting frame 42 and, the driven shafts 46 are provided in three numbers, and the three driven shafts 46 are rotatably connected between the front and rear surfaces of the inner wall of the support frame 42 through bearings.

Referring to fig. 9, in the embodiment of the present invention, a material baffle 7 is fixedly connected to the top of the left side of the protective cover 5, when the material frame 3 containing the material is continuously conveyed rightward, the material baffle 7 covers the top of the material frame 3, so as to prevent the material from scattering and polluting the conveying system, and reduce the waste of the material, the bottom of the protective cover 5 is communicated with a material discharge channel 8 penetrating to the lower part of the outer box 1, and the bottom of the outer box 1 is fixedly connected with the support legs 2.

Referring to fig. 11, in the embodiment of the present invention, the bottom of the charging basket 3 is communicated with a discharging pipe 9 penetrating through the outer box 1, an electromagnetic valve is disposed inside the discharging pipe 9, the discharging pipe 9 is a flexible hose, the top of the charging basket 3 is fixedly connected with a feeding hopper 10, the top of the outer box 1 and two sides of the discharging pipe 9 are fixedly connected with second hydraulic cylinders 11, output ends of the second hydraulic cylinders 11 penetrate through the outer box 1, output ends of the second hydraulic cylinders 11 are fixedly connected with a movable plate 12, and one end of the discharging pipe 9 located inside the outer box 1 extends to below the movable plate 12.

Referring to fig. 8 and 11, in the embodiment of the present invention, an anti-blocking mechanism 13 is disposed inside the material barrel 3, the anti-blocking mechanism 13 includes a motor frame 131 fixed at the bottom of the inner wall of the material barrel 3 through a bracket, a second motor 132 is fixedly connected to the top of the inner wall of the motor frame 131, the second motor 132 is electrically connected to an external power supply and a control system through a wire, an output end of the second motor 132 is fixedly connected to a rotating rod 133 penetrating below the motor frame 131 and extending into the discharging pipe 9, and a spiral discharging plate 134 is fixedly connected to a surface of the rotating rod 133.

Referring to fig. 5, in the embodiment of the present invention, the material frames 413 between the first chain 410 and the second chain 411 and between the second chain 411 and the third chain 412 are arranged at intervals in a staggered manner, and the width between the front wall and the rear wall of the protection cover 5 is greater than 1.5 times the width between the front wall and the rear wall of the support frame 42, so as to meet the requirement of the support frame 42 for the front-back movement.

When the device is used, the weighing capacity is set through the control panel, the concrete additive raw materials are poured into the feed barrel 3 through the feed hopper 10, then the first hydraulic cylinder 43 works to drive the movable plate 12 to move downwards until the bottom of the movable plate 12 is contacted with the top of the material frame 413 below, the electromagnetic valve in the blanking pipe 9 is opened to enable the materials to fall into the material frame 413, in the blanking process, the weighing device 414 in the material frame 413 always detects the weight of the materials and sends information to the controller, the controller compares the detected weight with the set weighing capacity, when the weight reaches the set value, the electromagnetic valve is closed to stop blanking, then the first motor 44 works to drive the first gear 47, the second gear 48 and the third gear 49 to rotate through the driving shaft 45 to further drive the first chain 410, the second chain 411 and the third chain 412 to move so as to drive the material frame 413 to move rightwards, the blanking work is circularly carried out in the way.

When the material frame 413 with materials moves to the rightmost side of the horizontal position, the material blanking operation starts to be carried out along with the rotation of the first chain 410, the second chain 411 and the third chain 412, when the material frame 413 moves to the rightmost side of the chain, the material frame 413 contacts with the poking plate 62, the poking plate 62 is pressed to rotate, so that the second spring 63 is compressed, meanwhile, the material frame 413 is pressed to enable the movable block 4153 to displace along the bottom of the material frame 413, the two movable blocks 4153 approach each other, so that the first spring 4156 is compressed, meanwhile, the support rod 4152 drives the rotating block 4151 to rotate, the material frame 413 continues to move along with the chain, when the material frame 413 starts to be far away from the poking plate 62, under the action of the resilience of the first spring 4156, the movable block 4153 is pushed to move back and forth along the bottom of the material frame 413, so that the material on the inner wall of the material frame 413 is driven to shake, so that the materials on, the material falls from the material frame 413 into the protective hood 5 and then into the subsequent mixing device through the discharge channel 8.

In the blanking process of the material frame 413, the first hydraulic cylinder 43 works to push the supporting frame 42 to move along the guide slide rail, so as to drive the material frame 413 to move back and forth, so that the blanking is more uniform, the material frame 413 is driven to be conveyed rightwards through the first chain 410, the second chain 411 and the third chain 412, the material frame 413 is pushed to move back and forth by combining the first hydraulic cylinder 43, the staggered and adjacent subsequent material frames 413 are conveyed to the position right below the movable plate 12, and the blanking of the blanking pipe 9 can be performed for the next blanking.

In the blanking process of the blanking pipe 9, the second motor 132 works to drive the rotating rod 133 to rotate, so as to further drive the spiral blanking plate 134 to rotate, so as to convey the material, accelerate the blanking speed and prevent the blanking port of the blanking pipe 9 from being blocked.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a powder conveying system for compounding based on building concrete additive, includes outer container (1), support frame fixedly connected with storage bucket (3), its characterized in that are passed through at the top of outer container (1): a quantitative conveying mechanism (4) is arranged in the outer box (1), a protective cover (5) is fixedly connected to the bottom of the inner wall of the outer box (1), the back of the protective cover (5) is fixedly connected with the back of the inner wall of the outer box (1), and a stirring mechanism (6) is arranged on the right side of the inner wall of the protective cover (5);

the quantitative conveying mechanism (4) comprises a driving shaft (45) and a driven shaft (46), wherein the surfaces of the driving shaft (45) and the driven shaft (46) are fixedly connected with a first gear (47), a second gear (48) and a third gear (49), the first gears (47), the second gears (48) and the third gears (49) are respectively in transmission connection through a first chain (410), a second chain (411) and a third chain (412), a material frame (413) is respectively arranged between the first chain (410) and the second chain (411) and between the second chain (411) and the third chain (412), a weighing device (414) is fixedly connected to the bottom of the inner wall of the material frame (413), and a shaking assembly (415) is arranged at the bottom of the material frame (413);

the shaking assembly (415) comprises two rotating blocks (4151) which are rotatably connected with a second chain (411) through a connecting shaft, the tops of the two rotating blocks (4151) are fixedly connected with supporting rods (4152), the top ends of the two supporting rods (4152) are rotatably connected with movable blocks (4153) through rotating shafts, the tops of the movable blocks (4153) are slidably connected with the bottom of the material frame (413) through limiting sliding rails (4154), the bottom of the material frame (413) is fixedly connected with a fixing plate (4155), and a first spring (4156) is fixedly connected between one side of the fixing plate (4155) opposite to one side of the movable blocks (4153);

toggle mechanism (6) are including fixing two limiting plate (61) in the front and back on protection casing (5) inner wall right side, two rotate through the pivot between the relative one side of limiting plate (61) and be connected with stirring board (62), fixedly connected with second spring (63) between stirring board (62) right side and the right side of protection casing (5) inner wall.

2. The powder conveying system for building concrete additive mixing based on claim 1, characterized in that: quantitative conveying mechanism (4) still include through direction slide rail (41) and outer container (1) inner wall bottom sliding connection's carriage (42) and fix two first pneumatic cylinders (43) positive in outer container (1), two the output of first pneumatic cylinder (43) all with the positive fixed connection of carriage (42), the first motor (44) of backup pad fixedly connected with is passed through to the upper left corner position that carriage (42) is positive.

3. The powder conveying system for building concrete additive mixing based on claim 2, characterized in that: the one end of driving shaft (45) is connected with the dorsal rotation of carriage (42) inner wall, the other end of driving shaft (45) extends to the outside of carriage (42), and with the output fixed connection of first motor 44, driven shaft (46) are provided with threely, and three driven shaft (46) rotate through the bearing and connect between the front and the back of carriage (42) inner wall.

4. The powder conveying system for building concrete additive mixing based on claim 1, characterized in that: the left top of the protective cover (5) is fixedly connected with a material baffle (7), and the bottom of the protective cover (5) is communicated with a discharge channel (8) penetrating to the lower part of the outer box (1).

5. The powder conveying system for building concrete additive mixing based on claim 1, characterized in that: the bottom intercommunication of storage bucket (3) has unloading pipe (9) that run through to outer container (1) inside to the top fixedly connected with feeder hopper (10) of storage bucket (3), the top of outer container (1) and the equal fixedly connected with second pneumatic cylinder (11) in both sides that are located unloading pipe (9).

6. The powder conveying system for building concrete additive mixing based on claim 5, characterized in that: the output end of the second hydraulic cylinder (11) penetrates through the inner part of the outer box (1), the output end of the second hydraulic cylinder (11) is fixedly connected with a movable plate (12), and one end, located inside the outer box (1), of the discharging pipe (9) extends to the lower side of the movable plate (12).

7. The powder conveying system for building concrete additive mixing based on claim 1, characterized in that: the inside of storage bucket (3) is provided with prevents stifled mechanism (13), prevent stifled mechanism (13) including fixing motor frame (131) in storage bucket (3) inner wall bottom through the support, the top fixedly connected with second motor (132) of motor frame (131) inner wall.

8. The powder conveying system for building concrete additive mixing based on claim 7, characterized in that: the output fixedly connected with of second motor (132) runs through below to motor frame (131) and extends to dwang (133) of unloading pipe (9) inside, flitch (134) are down in the fixed surface connection of dwang (133) spiral.

9. The powder conveying system for building concrete additive mixing based on claim 1, characterized in that: the material frames (413) between the first chain (410) and the second chain (411) and between the second chain (411) and the third chain (412) are arranged at intervals in a staggered mode, and the width between the front wall and the rear wall of the protective cover (5) is larger than 1.5 times of the width between the front wall and the rear wall of the support frame (42).