CN117774132A - Microorganism self-repairing concrete recycled aggregate preparation device capable of adjusting aggregate grading - Google Patents

Abstract

The invention provides a microorganism self-repairing concrete recycled aggregate preparation device capable of adjusting aggregate gradation, which relates to the technical field of concrete preparation equipment and comprises the following components: the main preparation cylinder body, the middle stirring shaft body, the upper protection cover plate and the upper connecting disc; the main preparation cylinder body is inside to be provided with well (mixing) shaft body, well (mixing) shaft body top is provided with the protection apron, and well (mixing) shaft body upper portion slides there is the upper connection pad, its characterized in that, the upper protection apron outside is fixed with the back shroud, and upper protection apron lower part is fixed with well connecting spring, and the lower part of upper protection apron anterior segment is fixed with the lower slide bar. The lower slide bar and the upper protective cover plate move vertically synchronously and reciprocally to promote the dropping of aggregate on the surface of the upper protective cover plate, reduce the adhesion of aggregate on the surface of the upper protective cover plate, solve the problems that the driving motor shields the aggregate accumulated by the baffle plate, personnel is required to be periodically, the aggregate is solidified and hardened for a long time, and the aggregate is difficult to clean.

Description

Preparation of microbial self-healing concrete recycled aggregate with adjustable aggregate gradation device

Technical field

The invention relates to the technical field of concrete preparation equipment, and in particular to a microbial self-repairing concrete recycled aggregate preparation device capable of adjusting aggregate gradation.

Background technique

Recycled aggregate concrete uses waste concrete as the main material. The waste concrete is crushed and mixed according to a certain proportion and grade, and then cement is added to form new concrete. Through the recycling of waste concrete, the amount of construction waste is reduced, which is in line with green and environmental protection standards. The general trend is to add microorganisms to recycled aggregates, and use microorganisms to generate calcium carbonate to fill concrete cracks to achieve the effect of concrete repair.

Existing preparation equipment is also equipped with a stirring shaft for stirring and mixing of aggregates. In order to protect the drive motor and other components on the top of the stirring shaft, the existing preparation equipment can only open the part as the raw material inlet, resulting in small openings of the preparation equipment. When the material speed is slow, the drive motor can also be blocked by a baffle, but the baffle will accumulate aggregates, which requires personnel to be regular. The aggregates will solidify and harden for a long time, making it difficult to clean, further increasing the workload of personnel. Case.

Contents of the invention

The embodiment of the present disclosure relates to a microbial self-repairing concrete regenerated aggregate preparation device with adjustable aggregate gradation. The upper protective cover surrounds and protects the driving chain and the like to avoid direct contact between the driving chain and the aggregate and the aggregate. Dump directly above the upper protective cover, allowing the aggregate to enter directly into the inside of the main preparation cylinder along the upper protective cover, expanding the feed opening range of the main preparation cylinder and increasing the feeding speed.

The first aspect of the present disclosure provides a microbial self-repairing concrete regenerated aggregate preparation device with adjustable aggregate gradation, specifically including: a main preparation cylinder, a middle mixing shaft, an upper protective cover and an upper connecting plate; There is a middle stirring shaft body inside the main preparation cylinder, and an upper protective cover is provided above the middle mixing shaft body. An upper connecting plate slides on the upper part of the middle mixing shaft body. An external weight sensor is fixed on the outside of the main preparation cylinder body. The external weight sensor The bottom and the outer support column are fixedly connected. The upper support frame is fixed on the inside of the upper part of the main preparation cylinder. The drive motor is fixed on the outside of the upper part of the main preparation cylinder. The main shaft gear of the drive motor is meshed and connected to the drive chain. The bottom of the main preparation cylinder rotates with a lower sealing plate. , the tail end of the lower sealing plate and the telescopic rod of the telescopic support rod rotate, the tail end of the telescopic support rod rotates with the main preparation cylinder, the first end of the lower sealing plate and the bottom outlet of the main preparation cylinder slide to seal, and the telescopic rod of the telescopic support rod supports the lower seal The plate rotates to open and close the outlet at the bottom of the main preparation cylinder. There is also a digital display screen outside the main preparation cylinder that is added to the external weight sensor.

In at least some embodiments, the lower end of the middle stirring shaft body is surrounded by spiral lower spiral teeth, the outer annular array of the upper part of the middle stirring shaft body is fixed with outer stirring bars, the upper end of the middle stirring shaft body is fixed with an upper bump plate, and the middle stirring shaft body is fixed with an upper bump plate. The upper part of the stirring shaft body slides axially with an upper connecting rotating shaft, and an upper cam plate is fixed on the outside of the lower part of the upper connecting rotating shaft.

In at least some embodiments, the outer stirring bar is slidably attached to the inner wall of the main preparation cylinder, and the outer stirring bar is attached to clean the aggregate attached to the inner wall of the main preparation cylinder, reducing aggregate residue on the inner wall of the main preparation cylinder, and the upper connection The rotating shaft is circumferentially connected to the upper support frame, and the upper end of the upper connecting rotating shaft is meshedly connected to the drive chain.

In at least some embodiments, a rear cover plate is fixed to the outside of the upper protective cover plate, the upper parts of the upper protective cover plate and the rear cover plate are both inclined structures narrowing toward the middle, a middle connecting spring is fixed to the lower part of the upper protective cover plate, a lower sliding rod is fixed to the lower part of the front section of the upper protective cover plate, and a lower cover plate is fixed to the lower part of the upper protective cover plate.

In at least some embodiments, the upper protective cover and the rear cover are covered above and outside the upper connecting shaft, the drive chain, and the upper support frame. The lower end of the middle connecting spring is fixedly connected to the upper support frame, and the upper protective cover and the upper support frame are fixedly connected. The support frame is vertically slidingly connected.

In at least some embodiments, the lower cover plate surrounds the outside of the upper cam plate for protection, the lower cover plate prevents the upper convex plate from contacting the aggregate, the lower rod is slidingly connected to the upper part of the upper cam plate, and the upper cam plate rotates When the machine moves, the lower rod, the upper protective cover and the rear cover make vertical reciprocating movements. The vertical reciprocating movement of the upper protective cover promotes the falling of aggregates on the surface of the upper protective cover and reduces the adhesion of aggregates on the surface of the upper protective cover.

In at least some embodiments, the annular array at the top of the upper connecting disk has a rotating upper rotating block, the upper connecting disk has a side limiting block fixed on one side of the side limiting block, and the upper connecting disk is fixed on the other side of the side limiting block. There is a support elastic piece fixed on the side. When the middle stirring shaft rotates counterclockwise for stirring, the upper convex disc rotates counterclockwise synchronously. The upper convex disc can push the upper rotating block to rotate and tilt toward the side of the support elastic piece counterclockwise.

In at least some embodiments, the head end of the supporting spring is fixed to the upper connecting disk, the upper rotating block and the bottom protrusion of the upper protrusion disk are slidably connected, the upper connecting disk and the lower cover plate are fixedly connected, and when the upper protrusion disk rotates clockwise, the upper protrusion disk moves vertically along the top inclined surface of the upper rotating block at the same time, the middle stirring shaft body, the upper protrusion disk, the outer stirring bar and the lower spiral teeth move vertically back and forth, and the outer stirring bar and the lower spiral teeth move vertically to shake off the aggregate on the surface of the outer stirring bar and the lower spiral teeth.

The invention provides a microbial self-healing concrete regenerated aggregate preparation device with adjustable aggregate gradation, which has the following features:

Beneficial effects:

The upper protective cover surrounds and protects the driving chain, etc., to avoid direct contact between the driving chain, etc. and the aggregate. The aggregate is dumped directly above the upper protective cover, so that the aggregate directly enters the main preparation machine along the upper protective cover. On the inside of the cylinder, the feed opening range of the main preparation cylinder is expanded to increase the feed speed.

The middle stirring shaft and the upper protrusion plate rotate synchronously to stir and mix the aggregate, the upper protrusion plate slides with the lower slide rod at the same time, and the lower slide rod and the upper protective cover plate move back and forth vertically synchronously to promote the falling of the aggregate on the surface of the upper protective cover plate and reduce the adhesion of the aggregate on the surface of the upper protective cover plate.

The external weight sensor monitors and displays the weight of the aggregate in real time, making it easier to weigh the quantity of aggregates of different particles and adjust the gradation.

When the aggregate is mixed and exported, the middle stirring shaft rotates clockwise, the middle stirring shaft and the upper convex disc rotate clockwise synchronously, the upper convex disc moves up along the slope of the upper rotating block, and the middle stirring shaft The upper convex plate, outer stirring bar and lower spiral teeth move vertically back and forth, and the outer mixing bar and lower spiral teeth vertically reciprocate to shake off the aggregate adhered to the surface, reducing the cleaning burden of the outer stirring bar and lower spiral teeth.

Description of drawings

In order to explain the technical solutions of the embodiments of the present invention more clearly, the drawings of the embodiments will be briefly introduced below.

The drawings in the following description only relate to some embodiments of the invention, but do not limit the invention.

In the attached picture:

Figure 1 shows a schematic diagram of the overall structure of the present application;

Figure 2 shows a schematic structural diagram of the main preparation cylinder and the upper protective cover of the present application in a half-section state;

Figure 3 shows a schematic diagram of the structure of the middle stirring shaft of the present application;

Figure 4 shows a schematic structural diagram of the protective cover of the present application in a half-sectioned state;

Figure 5 shows a schematic diagram of the position and structure of the upper connecting plate of the present application;

Figure 6 shows a schematic structural diagram of the turning block of the present application;

Figure 7 shows a schematic structural diagram of the upper cam plate and the middle stirring shaft of the present application in a vertically lifted state;

Figure 8 shows a schematic structural diagram of the split state of the present application.

List of reference signs

1. Main cylinder; 101. External weight sensor; 102. External support column; 103. Upper support frame; 104. Drive motor; 105. Drive chain; 106. Lower sealing plate; 107. Telescopic support rod;

2. Middle stirring shaft; 201. Lower spiral teeth; 202. External stirring bars; 203. Upper convex plate; 204. Upper connecting shaft; 205. Upper cam plate;

3. Upper protective cover; 301, rear cover; 302, middle connecting spring; 303, lower rod; 304, lower cover;

4. Upper connecting plate; 401. Upper rotating block; 402. Side limiting block; 403. Supporting spring.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

Embodiment 1: Please refer to Figure 1 to Figure 8:

The invention proposes a microbial self-healing concrete regenerated aggregate preparation device with adjustable aggregate gradation, which includes: a main preparation cylinder 1, a middle mixing shaft 2, an upper protective cover 3 and an upper connecting plate 4. The main preparation An external weight sensor 101 is fixed on the outside of the cylinder 1. The bottom of the external weight sensor 101 is fixedly connected to the external support column 102. An upper support frame 103 is fixed on the inside of the upper part of the main preparation cylinder 1. A drive motor 104 is fixed on the outside of the upper part of the main preparation cylinder 1. , the drive motor 104 main shaft gear meshes and connects the drive chain 105, the bottom of the main preparation cylinder 1 rotates with a lower sealing plate 106, the tail end of the lower sealing plate 106 and the telescopic rod of the telescopic support rod 107 rotate, the tail end of the telescopic support rod 107 and the main preparation The cylinder 1 rotates, and the head end of the lower sealing plate 106 slides and seals the bottom outlet of the main preparation cylinder 1. The telescopic support rod 107 supports the rotation of the lower sealing plate 106 to open and close the bottom outlet of the main preparation cylinder 1. The main preparation cylinder The outside of the body 1 is also provided with a digital display screen after adding the external weight sensor 101. The main preparation cylinder 1 is provided with a middle stirring shaft 2, and the lower end of the middle mixing shaft 2 is surrounded by spiral lower spiral teeth 201. An outer stirring bar 202 is fixed in an annular array on the upper outer side of the stirring shaft body 2. An upper bump plate 203 is fixed on the upper end of the middle stirring shaft body 2. An upper connecting shaft 204 slides axially on the upper part of the middle stirring shaft body 2. The lower outer side of the upper connecting rotating shaft 204 The upper cam plate 205 is fixed, and the outer stirring bar 202 slides and fits with the inner wall of the main preparation cylinder 1. The outer stirring bar 202 fits and cleans the aggregate attached to the inner wall of the main preparation cylinder 1 and reduces the aggregate on the inner wall of the main preparation cylinder 1. Remaining, the upper connecting shaft 204 is connected to the upper support frame 103 for circumferential rotation, and the upper end of the upper connecting shaft 204 is meshed with the driving chain 105;

An upper protective cover 3 is provided above the middle stirring shaft body 2, and a rear cover 301 is fixed on the outside of the upper protective cover 3. The upper parts of the upper protective cover 3 and the rear cover 301 are inclined structures that narrow toward the middle. A middle connection spring 302 is fixed at the lower part of the protective cover 3, a sliding rod 303 is fixed at the lower part of the front section of the upper protective cover 3, a lower cover 304 is fixed at the lower part of the upper protective cover 3, and the upper protective cover 3 and the rear cover 301 are covered Above and outside the upper connecting shaft 204, the driving chain 105, and the upper supporting frame 103, the lower end of the middle connecting spring 302 is fixedly connected to the upper supporting frame 103, the upper protective cover 3 and the upper supporting frame 103 are vertically slidingly connected, and the middle stirring shaft body 2. There is an upper connecting plate 4 sliding on the upper part. The annular array on the top of the upper connecting plate 4 has a rotating upper rotating block 401. The upper connecting plate 4 has a side limiting block 402 fixed on one side of the side limiting block 402. The upper connecting plate 4 is on A support elastic piece 403 is fixed on the other side of the side limit block 402. When the middle stirring shaft 2 rotates counterclockwise for stirring, the upper bump plate 203 rotates counterclockwise synchronously, and the upper bump plate 203 can push the upper rotating block 401 counterclockwise. Rotate and tilt toward the side of the supporting elastic member 403, and the upper bump plate 203 will not move vertically during counterclockwise stirring.

In the disclosed embodiment, the lower cover 304 surrounds the outside of the upper cam plate 203 for protection. The lower cover 304 prevents the upper convex plate 203 from contacting the aggregate. The lower rod 303 is slidingly connected to the upper part of the upper cam plate 205. When the upper cam plate 205 rotates, the lower rod 303, the upper protective cover 3 and the rear cover 301 make vertical reciprocating movements. The vertical reciprocating movement of the upper protective cover 3 promotes the falling of aggregates on the surface of the upper protective cover 3, reducing the upper The adhesion of aggregates on the surface of the protective cover 3 saves personnel the burden of regular manual cleaning of the upper protective cover 3, and also avoids the situation where the aggregates on the upper protective cover 3 have solidified and agglomerated for a long time and are difficult to clean.

In the embodiment of the present disclosure, the head end of the supporting spring 403 is fixed to the upper connecting disk 4, the upper rotating block 401 and the bottom protrusion of the upper protrusion disk 203 are slidably connected, the upper connecting disk 4 and the lower cover plate 304 are fixedly connected, and when the upper protrusion disk 203 rotates clockwise, the upper protrusion disk 203 moves vertically along the top inclined surface of the upper rotating block 401 at the same time, and the middle stirring shaft 2 and the upper protrusion disk 203 and the outer stirring bar 202 and the lower spiral tooth 201 move vertically back and forth, and the outer stirring bar 202 and the lower spiral tooth 201 move vertically to shake off the aggregate adhered to the surface of the outer stirring bar 202 and the lower spiral tooth 201, thereby reducing the residual aggregate adhered to the surface of the outer stirring bar 202 and the lower spiral tooth 201 after discharging.

Embodiment 2: Based on Embodiment 1, the number of bumps on the upper cam plate 205 is adjusted as needed. The number of bumps on the upper cam plate 205 adjusts the vibration interval of the upper protective cover 3. The number of bumps on the upper cam plate 205 is adjusted. The larger the number, the more frequent the vibrations of the upper protective cover 3. The vibration cleaning effect of the upper protective cover 3 on finer and more viscous aggregates is also better, improving the cleaning experience of finer and more viscous aggregates.

The working principle of this embodiment: the top of the main preparation cylinder 1 is opened for dumping operation of recycled aggregate, and the upper protective cover 3 surrounds and protects the driving motor 104, the driving chain 105, etc., to prevent the driving motor 104, the driving chain 105, etc. In direct contact with the aggregate, the aggregate is poured directly above the upper protective cover 3, so that the aggregate flows downward along the bottom of the upper protective cover 3 and directly enters the inside of the main preparation cylinder 1, expanding the main preparation cylinder. 1. The feeding opening range increases the feeding speed of the main preparation cylinder 1 and avoids the problem that the existing main preparation cylinder 1 can only open parts of the main preparation cylinder 1 in order to protect the drive motor 104, drive chain 105 and other components in the top center, resulting in openings. The feeding speed is slow, or the driving motor 104 and the driving chain 105 are blocked by the baffle, but the baffle will accumulate aggregates and require personnel to do so regularly, increasing the workload of the personnel;

The outer support column 102 is in contact with the ground. The weight of the main preparation cylinder 1 equipment is transmitted to the outer support column 102 through the external weight sensor 101. The external weight sensor 101 supports and monitors the change of the weight of the main preparation cylinder 1. The main preparation cylinder 1 1. During the introduction of raw materials such as aggregates and microorganisms with different particle sizes, the external weight sensor 101 monitors and displays the weight of the aggregate in real time, weighs the number of different particle aggregates inside the main preparation cylinder 1, and passes the different particles Monitoring the weight of aggregates and performing mixing operations in different proportions makes it easier to adjust the gradation in different proportions;

The driving motor 104 drives the upper connecting rotating shaft 204 to rotate counterclockwise through the driving chain 105. The upper connecting rotating shaft 204 slides axially through the hexagonal prism and the middle stirring shaft body 2 and maintains synchronous circumferential rotation. The middle stirring shaft body 2 and the lower spiral teeth 201. The outer mixing bar 202 rotates to mix aggregates, microorganisms and other materials. The lower spiral teeth 201 rotate to bring up the materials below for stirring, improving the uniform mixing of aggregates, microorganisms and other materials. The uniform distribution of microorganisms is beneficial to later concrete. There is a stable repair effect. The outer mixing bar 202 and the main preparation cylinder 1 slide internally to reduce the aggregate residue on the inner wall of the main preparation cylinder 1. The middle stirring shaft 2 and the upper bump disk 203 rotate synchronously, and the upper bump disk 203 rotates synchronously. At the same time, it slides with the lower rod 303. When the upward bumps on the outside of the upper bump plate 203 slide against the lower rod 303, the lower rod 303 moves upward along the bumps of the upper bump plate 203, and the lower rod 303 and the upper bump plate 203 move upward. The bumps move toward non-contact, and the middle connection spring 302 pulls the lower rod 303 to move downward and reset. The lower rod 303 and the upper protective cover 3 complete the synchronous reciprocating vertical movement operation. The vertical reciprocating movement of the upper protective cover 3 promotes the upper protective cover. The falling of aggregates on the surface of 3 reduces the adhesion of aggregates on the surface of the upper protective cover 3 and saves personnel the burden of cleaning the upper protective cover 3;

The contact surface between the upper bump disk 203 and the upper rotating block 401 is larger than the vertical movement distance of the upper protective cover 3 to prevent the upper rotating block 401 from vertically moving with the upper protective cover 3 and causing the upper bump disk 203 and the upper rotating block 401 to fail. In the case of contact or jamming, when the middle stirring shaft 2 rotates counterclockwise for stirring, the upper convex plate 203 rotates counterclockwise synchronously. The upper convex plate 203 can push the upper rotating block 401 to rotate and tilt counterclockwise, and the upper rotating block 401 rotates low. The upper bump plate 203 will not be hindered after the upper bump plate 203, and the upper bump plate 203 will not move vertically. The supporting elastic member 403 supports the upper rotating block 401 to reset and remain vertical; when the aggregate is mixed and exported, the elastic member 403 will expand and contract. The support rod 107 extends to support the lower sealing plate 106 to rotate and separate from the bottom opening of the middle stirring shaft 2. The middle stirring shaft 2 rotates clockwise, and the lower spiral teeth 201 rotate clockwise to accelerate the downward export of the material. The shaft body 2 and the upper bump disk 203 rotate clockwise synchronously. Due to the restriction of the side limiting block 402, the upper rotating block 401 cannot rotate to one side of the side limiting block 402. The upper bump disk 203 moves along the upper rotating block 401. The slope moves up, the middle stirring shaft body 2 and the upper bump plate 203 and the outer stirring bar 202 and the lower spiral teeth 201 move vertically reciprocally, and the outer stirring bar 202 and the lower spiral teeth 201 move vertically reciprocally to shake off the outer stirring bar 202 and The aggregate adhered to the surface of the lower spiral teeth 201 reduces the cleaning burden of the outer mixing bars 202 and the lower spiral teeth 201, and reduces the aggregate residue on the outer mixing bars 202 and the lower spiral teeth 201.

In this article, there are several points to note:

1. The drawings of the embodiments of the present disclosure only refer to the structures related to the embodiments of the present disclosure, and other structures may refer to common designs.

2. If there is no conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims (8)

1. A microbial self-repairing concrete recycled aggregate preparation device with adjustable aggregate grading, comprising: a main preparation cylinder (1), a middle stirring shaft (2), an upper protective cover plate (3) and an upper connecting plate (4); the main preparation cylinder (1) is provided with a middle stirring shaft (2), an upper protective cover plate (3) is provided above the middle stirring shaft (2), and an upper connecting plate (4) is slidably provided on the upper part of the middle stirring shaft (2), characterized in that a rear cover plate (301) is fixed to the outer side of the upper protective cover plate (3), a middle connecting spring (302) is fixed to the lower part of the upper protective cover plate (3), a lower slide rod (303) is fixed to the lower part of the front section of the upper protective cover plate (3), and a lower cover plate (304) is fixed to the lower part of the upper protective cover plate (3). 2. A microbial self-healing concrete regenerated aggregate preparation device with adjustable aggregate gradation according to claim 1, characterized in that, An external weight sensor (101) is fixed on the outside of the main preparation cylinder (1). The bottom of the external weight sensor (101) is fixedly connected to the external support column (102). An upper support frame is fixed on the inside of the upper part of the main preparation cylinder (1). (103), a drive motor (104) is fixed on the upper outer side of the main preparation cylinder (1), and the main shaft gear of the drive motor (104) is meshed with the drive chain (105). 3. A microbial self-healing concrete regenerated aggregate preparation device with adjustable aggregate gradation according to claim 2, characterized in that, The lower end of the middle stirring shaft (2) is surrounded by lower spiral teeth (201), an outer stirring strip (202) is fixed in an annular array on the upper side of the middle stirring shaft (2), and the upper end of the middle stirring shaft (2) is fixed with There is an upper convex plate (203), an upper connecting rotating shaft (204) sliding axially on the upper part of the middle stirring shaft body (2), and an upper cam plate (205) being fixed on the outside of the lower part of the upper connecting rotating shaft (204). 4. A microbial self-healing concrete regenerated aggregate preparation device with adjustable aggregate gradation according to claim 3, characterized in that, The outer stirring bar (202) and the inner wall of the main preparation cylinder (1) are slidingly connected, the upper connecting shaft (204) and the upper support frame (103) are connected in a circumferential direction, and the upper connecting shaft (204) upper end and the driving chain (105) are connected Engagement connection. 5. A microbial self-healing concrete regenerated aggregate preparation device with adjustable aggregate gradation according to claim 4, characterized in that, The upper protective cover plate (3) and the rear cover plate (301) cover the upper connecting shaft (204), the driving chain (105), and the upper support frame (103) above and outside, the lower end of the middle connecting spring (302) is fixedly connected to the upper support frame (103), and the upper protective cover plate (3) and the upper support frame (103) are vertically slidably connected. 6. A microbial self-healing concrete regenerated aggregate preparation device with adjustable aggregate gradation according to claim 5, characterized in that, The lower cover (304) surrounds the outside of the upper cam plate (203), and the lower rod (303) is slidingly connected to the upper part of the upper cam plate (205). When the upper cam plate (205) rotates, the lower rod (303) Make vertical reciprocating movement with the upper protective cover (3) and rear cover (301). 7. A microbial self-healing concrete regenerated aggregate preparation device with adjustable aggregate gradation according to claim 6, characterized in that, The upper connecting disk (4) has a rotating upper rotating block (401) in a circular array at the top, the upper connecting disk (4) has a side limit block (402) fixed on one side of the side limit block (402), and the upper connecting disk (4) has a supporting elastic member (403) fixed on the other side of the side limit block (402). 8. A microbial self-healing concrete regenerated aggregate preparation device with adjustable aggregate gradation according to claim 7, characterized in that, The head end of the support elastic piece (403) is fixed to the upper connecting plate (4), the upper rotating block (401) and the bottom bump of the upper bump plate (203) are slidingly connected, and the upper connecting plate (4) and the lower cover plate (304) is fixedly connected. When the upper bump plate (203) rotates clockwise, the upper bump plate (203) moves vertically along the top slope of the upper rotating block (401).