CN217434648U - Composite admixture device of recycled aggregate concrete - Google Patents

Abstract

The utility model relates to a recycled aggregate concrete processing technology field, concretely relates to recycled aggregate concrete's compound admixture device, which comprises a tank body, the inside of the tank body is provided with crushing assembly and screening assembly, the screening assembly is installed at the bottom side of the crushing assembly, the bottom of the tank body is fixedly connected with four landing legs, the bottom of the four landing legs is fixedly connected with a base, the top of the base is rotatably connected with a mixing mechanism, the top of the mixing mechanism is communicated with the bottom of the tank body through a cleaning mechanism, the top of the tank body is fixedly connected with a cover plate through screws, the crushing assembly comprises a crushing box and a first motor, and the top of the crushing box is fixedly connected with the bottom of the cover plate; it avoids people to clear up the inside bold material of screening subassembly, avoids people to supply the material of corresponding weight to the inside of jar body according to the weight of bold material, avoids supplementing the error in the material ratio of material in-process, guarantees various material ratio accuracy, has improved the efficiency of screening.

Description

Composite admixture device of recycled aggregate concrete

Technical Field

The utility model relates to a recycled aggregate concrete processing technology field, concretely relates to recycled aggregate concrete's compound admixture device.

Background

As is known, recycled concrete refers to the process of processing waste concrete, mixing the waste concrete with other materials, and then making the waste concrete into usable concrete again, wherein a plurality of materials need to be uniformly stirred by a composite admixture device in the process of producing and processing the recycled aggregate concrete so as to ensure the quality of the recycled aggregate concrete.

Through the retrieval, chinese patent publication No. CN113954238A discloses a composite admixture device for porous recycled aggregate concrete, including a tank body, a shaft sleeve, a first annular groove, a second annular groove, a screening component, a stirring component, an installation component, a bracket, a first guard gate, a second guard gate, a discharge part, a cylinder, a first box, a first motor, a first rotating shaft, a cam, a screening box, a third guard gate, a first installation groove, a first screen, a first spring, a second screen, a second spring, a connecting rod and a second rotating shaft.

The prior art scheme has the following defects in the using process:

1. it sieves through the screening subassembly, because there is the bold material in the material, can pile up in the inside of screening subassembly, and people of not being convenient for clear up, after bold material clearance comes out, still need supplement the material of corresponding weight to the inside of jar body according to the weight of each bold material, increased the efficiency of regeneration aggregate concrete processing and the accuracy of material ratio.

2. It sieves through the screening subassembly, and it carries out vertical stirring to the material through agitating unit, and it is not convenient for make the material transversely mix, and is relatively poor to the effect of material stirring.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides a compound admixture device of regeneration aggregate concrete to solve the problem that provides in the above-mentioned background art.

(II) technical scheme

In order to achieve the above purpose, the utility model provides a following technical scheme: a composite admixture device for recycled aggregate concrete comprises a tank body, wherein a crushing assembly and a screening assembly are arranged inside the tank body, the screening assembly is installed on the bottom side of the crushing assembly, the bottom end of the tank body is fixedly connected with four supporting legs, the bottom ends of the four supporting legs are fixedly connected with a base, the top end of the base is rotatably connected with a mixing mechanism, the top end of the mixing mechanism is communicated with the bottom end of the tank body through a cleaning mechanism, the top end of the tank body is fixedly connected with a cover plate through screws, the crushing assembly comprises a crushing box and a first motor, the top end of the crushing box is fixedly connected with the bottom end of the cover plate, the first motor is installed on the top end of the cover plate, the output end of the first motor extends to the lower portion of the cover plate and is fixedly connected with a first crushing shaft, a plurality of first crushing teeth are uniformly and fixedly connected to the outer portion of the first crushing shaft, a square groove is formed in the bottom side inside the first crushing shaft, the inside slip of square groove is provided with the square, and the bottom fixedly connected with second crushing axle of square, the bottom of second crushing axle extend to the below of first crushing axle, and the tooth is smashed to a plurality of seconds of outside fixedly connected with of second crushing axle.

Preferably, the screening assembly comprises a screening box and a second motor, the screening box is arranged outside the crushing box, the screening box and the crushing box are in sealed sliding rotation fit, the screening net plate is fixedly connected to the bottom side inside the screening box, the bottom end of the second crushing shaft is rotatably connected with the screening net plate, a first circular ring is fixedly sleeved on the bottom side outside the screening box, a plurality of spiral grooves are formed in the inner side wall of the tank body, a plurality of rollers are uniformly and rotatably connected to the outer side wall of the first circular ring, the rollers are respectively located inside the spiral grooves, a circular groove is formed in the bottom end of the first circular ring, a rotating ring is rotatably connected to the inside of the circular groove, a second circular ring is fixedly connected to the bottom end of the rotating ring, the right end of the tank body is installed on the second motor, the output end of the second motor extends to the rotating shaft fixedly connected inside the tank body, two crankshafts are installed on the rotating shaft, and first rotating plates are rotatably connected to the outside of the two crankshafts, the bottom of two first commentaries on classics boards all is connected with the bottom rotation of second ring.

Further, the mixing mechanism includes mixing box and third motor, the bottom of mixing box is passed through the connecting seat and is connected with the top rotation of base, and the top intermediate position intercommunication of mixing box has flexible pipe, and the top left side of mixing box is rotated and is connected with electronic jar, and the top of electronic jar is rotated with the bottom of the jar body and is connected, the right-hand member at the mixing box is installed to the third motor, and the output of third motor extends to the inside and the fixedly connected with (mixing) shaft of mixing box, and a plurality of stirring boards of the equal fixedly connected with in top and the bottom of (mixing) shaft, the first scraper blade of one end fixedly connected with of (mixing) shaft are kept away from to a plurality of stirring boards, and the one end that the (mixing) shaft was kept away from to first scraper blade contacts with the inside wall of mixing box.

Still further, clearance mechanism includes rack and gear, the bottom of the jar body is rotated and is connected with the runner pipe, and the runner pipe extends to a plurality of second scraper blades of the one end fixedly connected with of the internal portion of jar, the side of second scraper blade and the inside wall contact of the jar body, the gear housing is established in the outside of runner pipe, the bottom rear side fixedly connected with fixing base of the jar body, and the bottom of fixing base is provided with convex groove, and the inside in convex groove slides and is provided with convex strip, the top of rack and the bottom fixed connection of convex strip, rack and gear mesh mutually, and the bottom of rack is rotated and is connected with the second and changes the board, and the bottom of second commentaries on classics board is rotated with the top of mixing box and is connected.

As a further scheme of this scheme, the bottom fixedly connected with of apron fills up, and the bottom of sealed pad contacts with the top of the jar body, and the top of apron is connected with and smashes the loading hopper of incasement portion intercommunication.

As a further scheme of the scheme, the bottom side of the left end of the mixing box is communicated with a discharge pipe, and a valve is arranged on the discharge pipe.

(III) advantageous effects

Compared with the prior art, the utility model provides a composite admixture device of recycled aggregate concrete possesses following beneficial effect:

1. the utility model discloses in, sieve the material through the screening subassembly, stir the material through crushing subassembly at the in-process of screening, smash the material into the granule of suitable size, avoid people to clear up the inside bold material of screening subassembly, avoid people to supply the material of corresponding weight according to the weight of bold material to the inside of the jar body, avoid the error in supplementary material in-process material ratio, guarantee various material ratio accuracies, improved the efficiency of screening.

2. The utility model discloses in, set up to a whole through crushing unit and screening subassembly, reduced the land area that reducing mechanism occupy, reduce the cost that the device was purchased.

3. The utility model discloses in, drive pivot and two bent axle rotations through the second motor on the screening subassembly, make first ring, second ring and screening case reciprocate through two first rotor plates, make first ring and screening case rotate through the cooperation of gyro wheel and helicla flute, be convenient for evenly get rid of the inside bottom side to the jar body with the material of screening incasement portion, improve the efficiency of screening, can avoid the screening otter board to block up simultaneously, prolong the life of screening otter board.

4. The utility model discloses in, drive (mixing) shaft and a plurality of stirring board rotation through the third motor on the mixing mechanism, carry out longitudinal mixing to the material of mixing box inside, drive the mixing box through electronic jar simultaneously and rotate, make the material of mixing box inside carry out lateral shifting, be convenient for make the material carry out horizontal and longitudinal mixing, improve the speed and the effect that the material mixes, simultaneously, promote the mixing box through electronic jar and rotate downwards, be convenient for make the even material of mixing in the mixing box discharge.

5. The utility model discloses in, at mixing box pivoted in-process, it drives rack horizontal slip to change the board through the second, rack horizontal slip drives gear and commentaries on classics pipe rotation, the commentaries on classics pipe rotates and drives a plurality of second scraper blades and rotate, rotate the inside that the internal portion of jar of being convenient for fast falls to the mixing box through the second scraper blade, avoid a large amount of materials to pile up in the top department of commentaries on classics pipe and cause the commentaries on classics pipe to block up, be convenient for scrape through the second scraper blade simultaneously and wipe away the internal side wall of jar, guarantee the cleanness of the internal portion bottom side wall of jar, guarantee the inside that the material all falls to the mixing box, avoid the waste of material, guarantee the accuracy of multiple material ratio, guarantee the quality of regeneration aggregate concrete processing.

Drawings

FIG. 1 is a schematic structural view of the present invention;

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

fig. 3 is a schematic view of a partial enlarged structure at a in fig. 2 according to the present invention;

fig. 4 is a schematic view of a partial enlarged structure at B in fig. 2 according to the present invention;

fig. 5 is a schematic diagram of a partial enlarged structure at C in fig. 2 according to the present invention.

In the figure: 1. a tank body; 2. a support leg; 3. a base; 4. a cover plate; 5. a crushing box; 6. a first motor; 7. a first crushing shaft; 8. a first crushing tooth; 9. a square block; 10. a second crushing shaft; 11. a second crushing tooth; 12. screening the box; 13. a second motor; 14. screening the screen plate; 15. a first circular ring; 16. a roller; 17. rotating the ring; 18. a second circular ring; 19. a rotating shaft; 20. a crankshaft; 21. a first rotating plate; 22. a mixing box; 23. a third motor; 24. a connecting seat; 25. a telescopic pipe; 26. an electric cylinder; 27. a stirring shaft; 28. a stirring plate; 29. a first squeegee; 30. a rack; 31. a gear; 32. pipe rotation; 33. a second squeegee; 34. a fixed seat; 35. a convex strip; 36. a second rotating plate; 37. a gasket; 38. a hopper; 39. a discharge pipe; 40. and (4) a valve.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

Referring to fig. 1-5, a composite admixture device for recycled aggregate concrete comprises a tank body 1, a crushing assembly and a screening assembly are arranged inside the tank body 1, the material is crushed by the crushing assembly and is screened by the screening assembly, the screening assembly is arranged at the bottom side of the crushing assembly and is integrated with the screening assembly, the land area occupied by the crushing assembly is reduced, the purchase cost of the device is reduced, four support legs 2 are fixedly connected to the bottom end of the tank body 1, a base 3 is fixedly connected to the bottom ends of the four support legs 2, the top end of the base 3 is rotatably connected with a mixing mechanism, the material is rapidly and uniformly mixed by the mixing mechanism, the top end of the mixing mechanism is communicated with the bottom end of the tank body 1 through a cleaning mechanism, the inner side wall inside the tank body 1 is conveniently cleaned by the cleaning mechanism, and the top end of the tank body 1 is fixedly connected with a cover plate 4 through screws, the bottom end of the cover plate 4 is fixedly connected with a sealing gasket 37, the bottom end of the sealing gasket 37 is contacted with the top end of the tank body 1, the sealing performance of the connection between the cover plate 4 and the tank body 1 is improved, the top end of the cover plate 4 is connected with a feeding hopper 38 communicated with the inside of the crushing box 5, materials with corresponding proportions are conveniently added into the crushing box 5 through the feeding hopper 38, the crushing assembly comprises the crushing box 5 and a first motor 6, the top end of the crushing box 5 is fixedly connected with the bottom end of the cover plate 4, the first motor 6 is installed at the top end of the cover plate 4, the output end of the first motor 6 extends to the lower part of the cover plate 4 and is fixedly connected with a first crushing shaft 7, the outer part of the first crushing shaft 7 is uniformly and fixedly connected with a plurality of first crushing teeth 8, the inner part of the first crushing shaft 7 is provided with a square groove at the bottom side, the inner part of the square groove is provided with a square block 9 in a sliding manner, and the bottom end of the square block 9 is fixedly connected with a second crushing shaft 10, the first crushing shaft 7 is convenient to drive the second crushing shaft 10 to rotate through the square block 9, the square block 9 slides in the square groove, the second crushing shaft 10 is convenient to move up and down along with the screening box 12, the bottom end of the second crushing shaft 10 extends to the lower part of the first crushing shaft 7, the second crushing shaft 10 is fixedly connected with a plurality of second crushing teeth 11 on the outer part, the first crushing shaft 7, the second crushing shaft 10, the first crushing teeth 8 and the second crushing teeth 11 are driven by the first motor 6 to rotate to crush materials in the crushing box 5, the materials are convenient to crush into particles with required sizes, cleaning of massive materials in the screening assembly by people is avoided, the situation that the people supplement materials with corresponding weights to the inner part of the tank body 1 according to the weights of the massive materials is avoided, proportioning errors of the materials in the process of supplementing materials are avoided, and the proportioning accuracy of various materials is ensured, the efficiency of screening has been improved.

It should be further noted that the screening assembly includes a screening box 12 and a second motor 13, the screening box 12 is disposed outside the crushing box 5, the screening box 12 is in sealed sliding and rotating fit with the crushing box 5, a screening mesh plate 14 is fixedly connected to the bottom side inside the screening box 12, the material is screened by the screening mesh plate 14, the bottom end of the second crushing shaft 10 is rotatably connected to the screening mesh plate 14, a first ring 15 is fixedly sleeved on the bottom side outside the screening box 12, a plurality of spiral grooves are formed in the inner side wall of the tank body 1, a plurality of rollers 16 are uniformly and rotatably connected to the outer side wall of the first ring 15, the plurality of rollers 16 are respectively located inside the plurality of spiral grooves, a ring groove is formed in the bottom end of the first ring 15, a rotating ring 17 is rotatably connected to the inside of the ring groove, a second ring 18 is fixedly connected to the bottom end of the rotating ring 17, the right end of the tank body 1 is mounted on the second motor 13, the output end of the second motor 13 extends to the rotating shaft 19 fixedly connected to the inside of the tank body 1, install two bent axles 20 on the pivot 19, the outside of two bent axles 20 is all rotated and is connected with first commentaries on classics board 21, the bottom of two first commentaries on classics boards 21 all rotates with the bottom of second ring 18 to be connected, second motor 13 drives pivot 19 and two bent axles 20 and rotates, make first ring 15 through two first commentaries on classics boards 21, second ring 18 and screening case 12 reciprocate, make first ring 15 and the reciprocal rotation of screening case 12 through the cooperation of gyro wheel 16 with the helicla flute, be convenient for evenly get rid of the inside bottom side of jar body 1 with the material of screening case 12 inside, improve the efficiency of screening, can avoid screening otter board 14 to block up simultaneously, prolong screening otter board 14's life.

It should be further noted that the mixing mechanism includes a mixing box 22 and a third motor 23, the bottom end of the mixing box 22 is rotatably connected to the top end of the base 3 through a connecting seat 24, the bottom side of the left end of the mixing box 22 is communicated with a discharging pipe 39, a valve 40 is installed on the discharging pipe 39, the valve 40 is opened, the uniformly mixed material inside the mixing box 22 is conveniently discharged through the discharging pipe 39, a telescopic pipe 25 is communicated with the middle position of the top end of the mixing box 22, the material inside the tank body 1 is ensured to normally fall into the mixing box 22 while the mixing box 22 rotates, the left side of the top end of the mixing box 22 is rotatably connected with an electric cylinder 26, the top end of the electric cylinder 26 is rotatably connected to the bottom end of the tank body 1, the third motor 23 is installed at the right end of the mixing box 22, the output end of the third motor 23 extends to the inside of the mixing box 22 and is fixedly connected with a stirring shaft 27, the top end and the bottom end of the stirring shaft 27 are both fixedly connected with a plurality of stirring plates 28, the end of the stirring plates 28 far away from the stirring shaft 27 is fixedly connected with a first scraper 29, the interior of the mixing box 22 is cleaned through the first scraper 29, so as to ensure the cleanness of the inner side wall of the mixing box 22, the end of the first scraper 29 far away from the stirring shaft 27 is contacted with the inner side wall of the mixing box 22, the stirring shaft 27 and the stirring plates 28 are driven to rotate through the third motor 23, the material in the mixing box 22 is longitudinally stirred, meanwhile, the mixing box 22 is driven to rotate through the electric cylinder 26, so that the material in the mixing box 22 is transversely moved, transverse and longitudinal mixing of the material is facilitated, the speed and effect of material mixing are improved, meanwhile, the electric cylinder 26 pushes the mixing box 22 to downwards rotate, so that the uniformly mixed material in the mixing box 22 is discharged, the cleaning mechanism comprises a rack 30 and a gear 31, the bottom end of the tank body 1 is rotatably connected with a rotating pipe 32, one end of the rotating pipe 32 extending to the interior of the tank body 1 is fixedly connected with a plurality of second scrapers 33, the bottom end of the second scraper 33 is below the rotating shaft 19, the side end of the second scraper 33 contacts with the inner side wall of the tank body 1, the gear 31 is sleeved outside the rotating pipe 32, the rear side of the bottom end of the tank body 1 is fixedly connected with a fixed seat 34, the bottom end of the fixed seat 34 is provided with a convex groove, a convex strip 35 is arranged inside the convex groove in a sliding manner, the top end of the rack 30 is fixedly connected with the bottom end of the convex strip 35, the rack 30 is meshed with the gear 31, the bottom end of the rack 30 is rotatably connected with a second rotating plate 36, the bottom end of the second rotating plate 36 is rotatably connected with the top end of the mixing box 22, in the rotating process of the mixing box 22, the rack 30 is driven to slide left and right by the second rotating plate 36, the rack 30 slides right to drive the gear 31 and the rotating pipe 32 to rotate, the rotating pipe 32 rotates to drive the plurality of second scrapers 33 to rotate, the second scraper 33 rotates to facilitate the materials inside the tank body 1 to quickly fall into the mixing box 22, avoid a large amount of materials to pile up at the top department of runner 32 and cause runner 32 to block up, be convenient for scrape away the internal side wall of jar 1 simultaneously through second scraper blade 33, guarantee the cleanness of jar internal portion end lateral wall, guarantee that the material is all to the inside of mixing box 22, avoid the waste of material, guarantee the accuracy of multiple material ratio, guarantee the quality of regeneration aggregate concrete processing.

In conclusion, when the composite admixture device for recycled aggregate concrete is used, a plurality of materials required by recycled aggregate concrete processing are poured into the feeding hopper 38 in proportion, the materials fall into the crushing box 5 through the feeding hopper 38, the first motor 6, the second motor 13, the third motor 23 and the electric cylinder 26 are started at the same time, the first motor 6 drives the first crushing shaft 7, the second crushing shaft 10, the first crushing teeth 8 and the second crushing teeth 11 to rotate to crush the materials in the crushing box 5, the materials are crushed into particles with required processing size, the second motor 13 drives the rotating shaft 19 and the two crankshafts 20 to rotate, the first circular ring 15, the second circular ring 18 and the screening box 12 move up and down through the two first rotating plates 21, the first circular ring 15 and the screening box 12 rotate through the matching of the roller 16 and the spiral groove, the materials in the screening box 12 are uniformly thrown to the bottom side of the tank body 1, the materials at the bottom side in the tank body 1 fall into the mixing box 22 through the rotary pipe 32 and the extension pipe 25, the third motor 23 drives the stirring shaft 27 and the stirring plates 28 to rotate, the materials in the mixing box 22 are longitudinally stirred, meanwhile, the electric cylinder 26 drives the mixing box 22 to rotate, the materials in the mixing box 22 transversely move, the materials are transversely and longitudinally mixed, in the rotating process of the mixing box 22, the rack 30 is driven to slide left and right through the second rotary plate 36, the rack 30 slides left and right to drive the gear 31 and the rotary pipe 32 to rotate, the rotary pipe 32 rotates to drive the second scraping plates 33 to rotate, the materials in the tank body 1 rapidly fall into the mixing box 22 through the rotation of the second scraping plates 33, after the materials in the mixing box 22 are uniformly mixed, the electric cylinder 26 pushes the mixing box 22 to rotate, and the discharging pipe 39 rotates counterclockwise, valve 40 is then opened and the homogeneously mixed material inside mixing box 22 is discharged through discharge conduit 39.

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 (6)

1. The utility model provides a composite admixture device of recycled aggregate concrete, includes a jar body (1), its characterized in that, the inside of jar body (1) is provided with crushing unit and screening subassembly, screening subassembly installs the bottom side at crushing unit, four landing legs (2) of bottom fixedly connected with of jar body (1), bottom fixedly connected with base (3) of four landing legs (2), the top of base (3) is rotated and is connected with mixing mechanism, and the bottom intercommunication of clearance mechanism and jar body (1) is passed through on mixing mechanism's top, screw fixedly connected with apron (4) are passed through on the top of jar body (1), crushing unit is including crushing case (5) and first motor (6), the top of crushing case (5) and the bottom fixed connection of apron (4), install the top at apron (4) first motor (6), and the output of first motor (6) extends to the below of apron (4) and fixedly connected with first crushing axle (3) 7) The utility model discloses a crushing device, a plurality of first crushing teeth (8) of even fixedly connected with in outside of first crushing axle (7), the inside bottom side of first crushing axle (7) is provided with the square groove, the inside slip of square groove is provided with square (9), the bottom fixedly connected with second crushing axle (10) of square (9), the bottom of second crushing axle (10) extends to the below of first crushing axle (7), a plurality of second crushing teeth (11) of outside fixedly connected with of second crushing axle (10).

2. The composite admixture device for recycled aggregate concrete according to claim 1, wherein the screening component comprises a screening box (12) and a second motor (13), the screening box (12) is arranged outside the crushing box (5), the screening box (12) is in sealed sliding and rotating fit with the crushing box (5), a screening mesh plate (14) is fixedly connected to the bottom side of the inside of the screening box (12), the bottom end of the second crushing shaft (10) is rotatably connected with the screening mesh plate (14), a first circular ring (15) is fixedly sleeved on the bottom side of the outside of the screening box (12), a plurality of spiral grooves are formed in the inner side wall of the tank body (1), a plurality of rollers (16) are uniformly and rotatably connected to the outer side wall of the first circular ring (15), the plurality of rollers (16) are respectively located inside the plurality of spiral grooves, an annular groove is formed in the bottom end of the first circular ring (15), the inside rotation of annular is connected with change (17), and the bottom fixedly connected with second ring (18) of change (17), the right-hand member of the jar body (1) is installed in second motor (13), and the output of second motor (13) extends to the inside fixedly connected with pivot (19) of the jar body (1), installs two bent axles (20) in pivot (19), and the outside of two bent axles (20) is all rotated and is connected with first commentaries on classics board (21), and the bottom of two first commentaries on classics boards (21) all rotates with the bottom of second ring (18) to be connected.

3. The composite admixture device for recycled aggregate concrete according to claim 2, wherein the mixing mechanism comprises a mixing box (22) and a third motor (23), the bottom end of the mixing box (22) is rotatably connected with the top end of the base (3) through a connecting seat (24), a telescopic pipe (25) is communicated with the middle position of the top end of the mixing box (22), an electric cylinder (26) is rotatably connected to the left side of the top end of the mixing box (22), the top end of the electric cylinder (26) is rotatably connected with the bottom end of the tank body (1), the third motor (23) is installed at the right end of the mixing box (22), the output end of the third motor (23) extends into the mixing box (22) and is fixedly connected with a stirring shaft (27), the top end and the bottom end of the stirring shaft (27) are fixedly connected with a plurality of stirring plates (28), and a first scraper (29) is fixedly connected to one end of the plurality of stirring plates (28) far away from the stirring shaft (27), one end of the first scraper (29) far away from the stirring shaft (27) is contacted with the inner side wall of the mixing box (22).

4. The composite admixture device for recycled aggregate concrete according to claim 3, wherein the cleaning mechanism comprises a rack (30) and a gear (31), the bottom end of the tank body (1) is rotatably connected with a rotating pipe (32), one end of the rotating pipe (32) extending into the tank body (1) is fixedly connected with a plurality of second scrapers (33), the side ends of the second scrapers (33) are in contact with the inner side wall of the tank body (1), the gear (31) is sleeved outside the rotating pipe (32), the rear side of the bottom end of the tank body (1) is fixedly connected with a fixed seat (34), the bottom end of the fixed seat (34) is provided with a convex groove, a convex strip (35) is slidably arranged in the convex groove, the top end of the rack (30) is fixedly connected with the bottom end of the convex strip (35), the rack (30) is meshed with the gear (31), the bottom end of the rack (30) is rotatably connected with a second rotating plate (36), the bottom end of the second rotating plate (36) is rotatably connected with the top end of the mixing box (22).

5. The recycled aggregate concrete composite admixture device according to claim 4, wherein a sealing gasket (37) is fixedly connected to the bottom end of the cover plate (4), the bottom end of the sealing gasket (37) is in contact with the top end of the tank body (1), and a charging hopper (38) communicated with the inside of the crushing box (5) is connected to the top end of the cover plate (4).

6. The composite admixture device for recycled aggregate concrete according to claim 5, wherein a discharge pipe (39) is communicated with the bottom side of the left end of the mixing box (22), and a valve (40) is arranged on the discharge pipe (39).

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