A concrete aggregate mortar screening system and method based on microwave heating

Abstract

The present invention discloses a concrete aggregate mortar screening system and method based on microwave heating. The system comprises a bracket and a box body, including a crushing module, a driving module, a fan, a temperature sensor, a microwave transmitter, an alarm, a sieve plate and a storage barrel. The box body is fixed on the bracket. The fan, the temperature sensor and the alarm are interconnected and all are fixed on the box body. The temperature sensor detects the temperature inside the box body. The fan is fixed through the box body to blow air into the box body for cooling. The storage barrel is arranged in the box body. The driving module is transmission-connected to the storage barrel. The crushing module passes through the box body and extends into the storage barrel. The system is rotationally connected to the box body and the storage barrel respectively. The microwave transmitter is fixed on the box body. The sieve plate is slidably connected to the storage barrel. The problem of excessive temperature during the screening of multi-sized aggregates and microwave heating is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of concrete regeneration equipment, and more particularly to a concrete aggregate mortar screening system and method based on microwave heating. Background Art

[0002] Research on waste concrete used as recycled aggregate has been widely used in society because of its huge economic advantages. Recycled concrete usually refers to new concrete made by crushing, cleaning, screening and other processes of discarded concrete blocks, adding a certain proportion of graded gravel, cement, water, etc. The aggregate obtained after crushing the waste concrete is recycled aggregate. These aggregates need to be screened before use. At the same time, more cement mortar will remain on the surface of the aggregate after crushing, so the surface is relatively rough, which will have a certain impact on the strength of the fresh concrete. It is necessary to filter the mortar while crushing the concrete.

[0003] The existing technology has the following disadvantages: (1) When the microwave heating method is used to efficiently heat the material, a large amount of heat will accumulate in the barrel, and the working safety of the equipment cannot be effectively monitored; (2) It cannot achieve screening and flexible proportioning of aggregates of different sizes. Summary of the Invention

[0004] In response to the above defects or improvement needs of the prior art, the present invention provides a concrete aggregate mortar screening system and method based on microwave heating. The system includes a crushing module, a driving module, a microwave emitter, a sieve plate and a storage barrel arranged on a box body. The storage barrel is arranged in the box body and is driven to rotate by the driving module. The crushing module extends into the storage barrel, and the two rotate in opposite directions. The crushing module is used to crush the aggregate in the storage barrel and at the same time allow the mortar on the surface of the aggregate to fall off. During the crushing and screening process, the microwave emitter emits microwaves into the storage barrel to heat the aggregate and improve the crushing efficiency. The sieve plate is slidably connected to the storage barrel. By adjusting the relative position of the sieve plate and the storage barrel, the screening of aggregates of different sizes can be adjusted to achieve batch recovery of recycled aggregates. A temperature sensor is set in the box body to detect the internal temperature. The temperature sensor, fan and alarm communicate with each other. When the temperature exceeds the preset value, the alarm emits an audible and visual alarm to remind the staff, and at the same time sends a signal to the fan to blow outside air into the box body to cool down, solving the problem of excessive temperature during the screening and microwave heating of multi-size aggregates.

[0005] In order to achieve the above object, according to one aspect of the present invention, a concrete aggregate mortar screening system based on microwave heating is provided, comprising:

[0006] The bracket and the box body also include a crushing module, a driving module, a fan, a temperature sensor, a microwave transmitter, an alarm, a sieve plate and a storage barrel. The box body is fixed on the bracket. The signals of the fan, the temperature sensor and the alarm are interconnected and are all fixed on the box body. The temperature sensor detects the temperature inside the box body. The fan is fixed on the box body to blow air into the box body to cool it down. The storage barrel is arranged in the box body. The driving module is transmission-connected to the storage barrel. The crushing module passes through the box body and extends into the storage barrel, and is rotationally connected to the box body and the storage barrel respectively. The microwave transmitter is fixed on the box body, and the sieve plate is slidingly connected to the storage barrel.

[0007] Furthermore, the storage barrel includes a second sieve hole, a second feeding port and a slide rail. The second sieve holes are evenly distributed on the side wall of the storage barrel. The slide rail is fixed to the surface of the storage barrel. The sieve plate is connected to the slide rail by sliding. The second feeding port is opened on the storage barrel.

[0008] Furthermore, the sieve plate includes a first sieve hole, a pull rod, and a scale dial. The first sieve hole corresponds to the second sieve hole in position. The pull rod passes through the box body. The pull rod is slidingly connected to the side wall of the box body. The pull rod is screwed to the side of the sieve plate, and the scale dial is arranged on the pull rod.

[0009] Furthermore, the driving module includes a ring gear, a second motor and a driving gear, the second motor is fixed to the side of the box body, the driving gear is connected to the output shaft of the second motor, the ring gear is engaged with the driving gear, the ring gear is arranged in the box body, and is fixedly connected to the storage barrel, and the rotation axis of the storage barrel is coaxial with the ring gear.

[0010] Furthermore, the crushing module includes a first motor, a rotating shaft, and a crushing rod. The first motor is fixed to the side wall of the box body. The power output shaft of the first motor is connected to the crushing rod. The rotation direction of the storage barrel is opposite to that of the crushing rod.

[0011] Furthermore, the box body is provided with a first feeding port.

[0012] Furthermore, the box body includes a first box body located at the top, and a second box body connected to the bottom of the first box body, and a discharge port is provided at the bottom of the second box body.

[0013] According to another aspect of the present invention, a method for screening concrete aggregate mortar based on microwave heating is provided, which is implemented using the concrete aggregate mortar screening system based on microwave heating, and includes the following steps:

[0014] S100, adding aggregate, starting the drive module, rotating the storage barrel until the second feeding port is aligned with the first feeding port, opening the second feeding port, pouring the aggregate removed from the crushed concrete into the storage barrel, and closing the second feeding port;

[0015] S200, crushing aggregate and removing mortar, adjusting the sieve plate so that the first sieve holes and the second sieve holes are completely offset, starting the crushing module and the driving module, the first motor drives the rotating shaft and the crushing rod to rotate, the second motor drives the ring gear, thereby driving the storage barrel to rotate, the storage barrel and the crushing rod rotating in opposite directions, the aggregate tumbling in the storage barrel, and being impacted and crushed by the crushing rod, causing the mortar on the surface of the aggregate to fall off, and at the same time, the crushing rod stirs the mortar accumulated in the storage barrel to flow out from the second sieve holes and gather at the bottom of the box;

[0016] S201, using microwave heating and monitoring the temperature, activating the microwave transmitter to heat the aggregate in the storage barrel to improve the aggregate crushing efficiency, and simultaneously activating the temperature sensor to monitor the temperature inside the box in real time. When the temperature exceeds a preset value in the alarm device, the alarm device alarms to alert staff, and simultaneously activates the fan to blow outside air into the box to cool it down until the temperature inside the box is lower than the preset value;

[0017] S300, screening aggregates of different sizes, closing the crushing module and the driving module until the crushing rod and the storage barrel stop rotating, inserting the pull rod from the through hole on the side of the box body, and screwing it to the side of the screen plate, dragging the pull rod to move the screen plate along the slide rail, adjusting the overlapping area of the first sieve hole and the second sieve hole, observing the dial until the overlapping area is adjusted to the size of the required aggregate, removing the rotating pull rod from the screen plate, pulling the pull rod out of the box body, and then starting the crushing module and the driving module to start screening the required aggregate.

[0018] In general, the above technical solutions conceived by the present invention can achieve the following beneficial effects compared with the prior art:

[0019] 1. The present invention provides a concrete aggregate mortar screening system based on microwave heating, comprising a crushing module, a driving module, a microwave transmitter, a sieve plate and a storage barrel arranged on a box body. The storage barrel is arranged in the box body and is driven to rotate by the driving module. The crushing module extends into the storage barrel, and the rotation directions of the two are opposite. The crushing module is used to crush the aggregate in the storage barrel and at the same time, let the mortar on the surface of the aggregate fall off. During the crushing and screening process, the microwave transmitter transmits microwaves to the storage barrel to heat the aggregate and improve the crushing efficiency. The sieve plate is slidably connected to the storage barrel. By adjusting the relative position of the sieve plate and the storage barrel, the screening of aggregates of different sizes and grades can be adjusted, so as to realize batch recovery of recycled aggregates. A temperature sensor is provided in the box body to detect the internal temperature. The signals of the temperature sensor, the fan and the alarm are interconnected. When the temperature exceeds a preset value, the alarm emits an audible and visual alarm to remind the staff, and at the same time sends a signal to the fan to blow outside air into the box body to achieve cooling, thereby solving the problem of overtemperature during the screening of multi-size aggregates and microwave heating.

[0020] 2. The present invention provides a concrete aggregate mortar screening system based on microwave heating. The crushing module adopted includes a first motor, a rotating shaft, and a crushing rod. The first motor is fixed to the side wall of the box body, and its power output shaft is connected to the crushing rod shaft. The crushing rod includes a central main shaft and support arms distributed on the side vertical axis. When the storage barrel rotates, the first motor drives the crushing rod to rotate in the opposite direction, so that the support arms hit the aggregate at a higher speed to achieve the crushing effect. Crushing larger aggregates can reduce their impact force on the storage barrel, accelerate the outflow of mortar from the second sieve hole, and avoid excessive accumulation of mortar to block the second plug hole.

[0021] 3. The present invention provides a concrete aggregate mortar screening system based on microwave heating. The sieve plate includes a first sieve hole, a pull rod, and a scale dial. During the mortar shedding process, the first sieve hole and the second sieve hole are completely staggered by adjusting the position of the sieve plate. During the rotation of the storage barrel, the mortar flows out through the second sieve hole on the side wall. After the mortar is discharged, the aggregate screening procedure can be carried out. When it is necessary to adjust the size of the screened aggregate, the sieve plate is pulled along the slide rail by the pull rod to adjust the alignment area of the first sieve hole and the second sieve hole, thereby adjusting the size of the aggregate passing aperture. A scale dial is provided on the pull rod for checking the aperture size. The storage barrel and sieve plate used in this system can flexibly adjust the aggregate screening standard to screen out aggregates of different grades, perform multiple screenings on the same batch of recycled concrete materials, and integrate the mortar removal on the aggregate surface and the aggregate screening process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural schematic diagram of a concrete aggregate mortar screening system based on microwave heating according to an embodiment of the present invention;

[0023] Figure 2 This is a cross-sectional view of a concrete aggregate mortar screening system based on microwave heating according to an embodiment of the present invention;

[0024] Figure 3 This is a schematic structural diagram of a storage bucket in a concrete aggregate mortar screening system based on microwave heating according to an embodiment of the present invention;

[0025] Figure 4 This is a schematic structural diagram of a storage bucket and a sieve plate in a concrete aggregate mortar screening system based on microwave heating according to an embodiment of the present invention;

[0026] Figure 5 This is a schematic structural diagram of a crushing module of a concrete aggregate mortar screening system based on microwave heating according to an embodiment of the present invention;

[0027] Figure 6 The figure is a schematic flow chart of a concrete aggregate mortar method based on microwave heating according to an embodiment of the present invention.

[0028] In all the drawings, the same reference numerals represent the same technical features, specifically: 1- bracket, 2- box, 3- crushing module, 4- drive module, 5- fan, 6- temperature sensor, 7- microwave transmitter, 8- alarm, 9- sieve plate, 10- storage barrel, 21- first feeding port, 22- discharge port, 31- first motor, 32- rotating shaft, 33- crushing rod, 41- ring gear, 42- second motor, 43- drive gear, 91- first sieve hole, 92- pull rod, 93- dial, 101- second sieve hole, 102- second feeding port, 103- slide rail. DETAILED DESCRIPTION

[0029] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to illustrate the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

[0030] like Figures 1-6As shown, the present invention provides a concrete aggregate mortar screening system based on microwave heating, comprising a box body 2 fixed on a bracket 1, and a crushing module 3, a driving module 4, a microwave transmitter 7, a sieve plate 9 and a storage barrel 10 arranged on the box body 2, wherein the storage barrel 10 is arranged in the box body 2 and is driven to rotate by the driving module 4, and the crushing module 3 extends into the storage barrel 10, and the rotation directions of the two are opposite. The crushing module 3 is used to crush the aggregate in the storage barrel 10 and at the same time let the mortar on the surface of the aggregate fall off. The box body 2 is provided with a first feeding port 21 The opening is used to add recycled concrete into the storage barrel 10. During the crushing and screening process, the microwave transmitter 7 transmits microwaves to the storage barrel 10 to heat the aggregate and improve the crushing efficiency. Preferably, the first feeding port 21 is provided with a top cover, which is opened when feeding and closed when microwave heating and screening are performed. The sieve plate 9 is slidably connected to the storage barrel 10. By adjusting the relative position of the sieve plate 9 and the storage barrel 10, the screening of aggregates of different sizes and grades can be adjusted, thereby realizing batch recovery of recycled aggregates and solving the problem of screening and breaking concrete aggregates.

[0031] Furthermore, if Figure 1-Figure 2 As shown, the system also includes a fan 5, a temperature sensor 6, and an alarm 8 arranged on the box 2. During the crushing process, the space inside the box 2 is relatively closed. During the continuous heating process of the microwave emitter 7, a large amount of heat accumulation is likely to occur. A temperature sensor 6 is provided to detect the temperature inside the box 2. The temperature sensor 6, the fan 5 and the alarm 8 are connected in signal. Before the aggregate is crushed and screened, a limit temperature is preset on the alarm 8. When the temperature exceeds the preset value, the alarm 8 emits an audible and visual alarm to remind the staff, and at the same time sends a signal to the fan 5. The fan 5 is fixed on the side wall of the box 2 and cools down the box 2 by blowing outside air into the box 2, thereby solving the problem of excessive temperature during the heating process of the microwave emitter 7.

[0032] Furthermore, if Figure 1 and Figure 2 As shown, the driving module 4 includes a ring gear 41, a second motor 42 and a driving gear 43, wherein the second motor 42 is fixed to one side of the box body 2, and the driving gear 43 is connected to the output shaft of the second motor 42 for transmitting power to the ring gear 41. The ring gear 41 is engaged with the driving gear 43. The ring gear 41 is arranged in the box body 2 and is fixedly connected to the storage barrel 10. Preferably, the rotation axis of the storage barrel 10 is coaxial with the ring gear 41. The driving module 4 is used to drive the storage barrel 10 to rotate, so that the aggregate rolls in the storage barrel 10.

[0033] Furthermore, if Figure 1 、 Figure 2 and Figure 5As shown, the crushing module 3 includes a first motor 31, a rotating shaft 32, and a crushing rod 33. The first motor 31 is fixed to the side wall of the box body 2, and its power output shaft is axially connected to the crushing rod 33. The crushing rod 33 includes a central main shaft and support arms distributed on the side perpendicular to the axis. Preferably, a plurality of branches perpendicular to the axis can be arranged on the support arm, and the support arms are evenly distributed in pairs at different positions of the main shaft. The main shaft of the crushing rod 3 passes through the box body 2 and the storage barrel 10, and is rotatably connected to the two respectively. When the storage barrel 10 rotates, the first motor 31 drives the crushing rod 33 to rotate in the opposite direction, so that the support arm hits the aggregate at a higher speed to achieve the crushing effect, and prepares for the decomposition of the aggregate size to leak from the screen plate 9. At the same time, crushing larger aggregates can reduce their impact on the storage barrel 10, prevent damage, and accelerate the outflow of mortar from the second sieve hole 101, avoiding excessive accumulation of mortar to block the second plug hole 101.

[0034] Furthermore, if Figure 1-Figure 3 As shown, the storage barrel 10 includes a second sieve hole 101, a second feeding port 102 and a slide rail 103. The crushing rod 3 passes through the axis of the storage barrel 10 and rotates inside it relative to the side wall of the storage barrel 10. The second sieve hole 101 is evenly distributed through the side wall of the storage barrel 10. The side wall refers to the side wall surrounding the crushing rod 3. The slide rail 103 and the second feeding port 102 are relatively arranged in the storage barrel 10. The slide rail 103 can be set in parallel and fixed on the surface of the storage barrel 10. The sieve plate 9 is slidably connected to the storage barrel 10 through the slide rail 103. Preferably, the second feeding port 102 is provided with a sliding door, which is an opening and closing structure. When material needs to be added to the storage barrel 10, it is rotated until the second feeding port 102 is aligned with the first feeding port 21. Furthermore, the shape of the side wall of the storage barrel 10 corresponding to the sieve plate 9 should fit the sieve plate 9.

[0035] Furthermore, if Figure 1-Figure 4As shown, the sieve plate 9 includes a first sieve hole 91, a pull rod 92, and a scale plate 93, wherein the first sieve hole 91 corresponds to the second sieve hole 101 in position. During the mortar shedding process, the position of the sieve plate 9 is adjusted so that the first sieve hole 91 and the second sieve hole 101 are completely staggered. During the rotation of the storage barrel 10, the mortar flows out through the second sieve hole 101 on the side wall. After the mortar is discharged, the aggregate screening procedure can be carried out. When it is necessary to adjust the size of the screened aggregate, the pull rod 92 is passed through the through hole provided on the side wall of the box body 2, and the end of the pull rod 92 is screwed to the screw hole on the side of the sieve plate 9. The through hole and the screw hole are concentrically provided, and then the mortar is moved along the slide rail 103. Pull the sieve plate 9 forward to adjust the alignment area of the first sieve hole 91 and the second sieve hole 101, thereby adjusting the aperture size of the aggregate passing through. A scale plate 93 is engraved or fixed on the pull rod 92. The staff stands outside the box 2 and observes the size of the scale plate 93 exposed on the pull rod 92 during the process of pushing and pulling the sieve plate 9, thereby determining the alignment area of the first sieve hole 91 and the second sieve hole 101 in the box 2. The storage barrel 10 and sieve plate 9 used in this system can flexibly adjust the aggregate screening standard and perform multiple screening on the same batch of recycled concrete. After the adjustment is completed, the pull rod 92 is rotated to release the fixation from the sieve plate 9, and then it can be pulled out of the box 2.

[0036] Furthermore, if Figure 1 As shown, the box body 2 includes a first box body located at the top, and a second box body connected to the bottom of the first box body. The first box body is larger than the space required for the storage barrel 10 to rotate. The first feeding port 21 is opened at the top or side of the first box body. The second box body preferably adopts a downward-contracting funnel shape, and an openable and closable discharge port 22 is provided at its bottom. The mortar and the screened aggregate are discharged through the second box body and the discharge port 22.

[0037] Furthermore, if Figures 1-6 As shown, the concrete aggregate mortar screening method based on microwave heating includes the following steps:

[0038] S100, added aggregate;

[0039] Start the drive module 4, rotate the storage barrel 10 until the second feeding port 102 is aligned with the first feeding port 21, open the second feeding port 102, pour the aggregate removed from the crushed concrete into the storage barrel 10, and close the second feeding port 102;

[0040] S200, crushing aggregate and removing mortar;

[0041] Adjust the sieve plate 9 so that the first sieve hole 91 and the second sieve hole 101 are completely staggered, start the crushing module 3 and the driving module 4, and the first motor 31 drives the rotating shaft 32 and the crushing rod 33 to rotate. The second motor 42 drives the ring gear 41, thereby driving the storage barrel 10 to rotate. The storage barrel 10 and the crushing rod 33 rotate in opposite directions. The aggregate rolls in the storage barrel 10 and is impacted and crushed by the crushing rod 33, causing the mortar on the surface of the aggregate to fall off. At the same time, the crushing rod 33 stirs the mortar accumulated in the storage barrel 10 to flow out from the second sieve hole 101 and gather at the bottom of the box body 2;

[0042] S201, heating using microwaves and monitoring the temperature;

[0043] The microwave transmitter 7 is started to heat the aggregate in the storage barrel 10 to improve the aggregate crushing efficiency. At the same time, the temperature sensor 6 is started to monitor the temperature in the box 2 in real time. When the temperature exceeds the preset value in the alarm device 8, the alarm device 8 alarms to remind the staff. At the same time, the fan 5 is started to blow outside air into the box 2 to cool it down until the temperature in the box 2 is lower than the preset value.

[0044] S300, screening aggregates of different sizes;

[0045] Close the crushing module 3 and the driving module 4 until the crushing rod 33 and the storage barrel 10 stop rotating, insert the pull rod 92 from the through hole on the side of the box body 2, and screw it to the side of the screen plate 9, drag the pull rod 92 to move the screen plate 9 along the slide rail 103, adjust the overlapping area of the first sieve hole 91 and the second sieve hole 101, observe the dial 93 until the overlapping area is adjusted to the required aggregate size, rotate the pull rod 92 to remove it from the screen plate 9, pull the pull rod 92 out of the box body 2, and then start the crushing module 3 and the driving module 4 to start screening the required aggregate. By repeating step S300, aggregates of different sizes can be screened in batches.

[0046] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A concrete aggregate mortar screening system based on microwave heating, comprising a bracket (1) and a box (2), characterized in that: The invention comprises a crushing module (3), a driving module (4), a blower (5), a temperature sensor (6), a microwave transmitter (7), an alarm (8), a sieve plate (9) and a storage barrel (10), wherein the box (2) is fixed on the bracket (1), the blower (5), the temperature sensor (6) and the alarm (8) are intercommunication in signal, and are all fixed on the box (2), the temperature sensor (6) detects the temperature in the box (2), and the blower (5) is fixed through the box (2). The box (2) is provided with air to blow into the box (2) to cool the box, the storage barrel (10) is provided in the box (2), the driving module (4) is in transmission connection with the storage barrel (10), the crushing module (3) passes through the box (2) and extends into the storage barrel (10), and is rotationally connected to the box (2) and the storage barrel (10) respectively, the microwave transmitter (7) is fixed on the box (2), and the sieve plate (9) is slidably connected to the storage barrel (10); The material storage barrel (10) comprises a second sieve hole (101), a second feeding port (102) and a slide rail (103), wherein the second sieve holes (101) are evenly distributed on the side wall of the material storage barrel (10), the slide rail (103) is fixed to the surface of the material storage barrel (10), the sieve plate (9) is slidably connected to the slide rail (103), and the second feeding port (102) is opened on the material storage barrel (10); The sieve plate (9) comprises a first sieve hole (91), a pull rod (92), and a scale plate (93); the first sieve hole (91) corresponds to the second sieve hole (101); the pull rod (92) passes through the box body (2); the pull rod (92) is slidably connected to the side wall of the box body (2); the pull rod (92) is screwed to the side of the sieve plate (9); and the scale plate (93) is arranged on the pull rod (92); When crushing aggregate and removing mortar, the first sieve hole (91) and the second sieve hole (101) are completely staggered, the crushing module (3) and the driving module (4) are started, the aggregate rolls in the storage barrel (10), and is crushed by impact, so that the mortar on the surface of the aggregate falls off; the accumulated mortar flows out from the second sieve hole (101) and gathers at the bottom of the box body (2); the overlapping area of the first sieve hole (91) and the second sieve hole (101) is adjusted; until the overlapping area is adjusted to the size of the required aggregate, the required aggregate begins to be screened.

2. A concrete aggregate mortar screening system based on microwave heating according to claim 1, characterized in that: The driving module (4) comprises a ring gear (41), a second motor (42) and a driving gear (43); the second motor (42) is fixed to the side of the housing (2); the driving gear (43) is connected to the output shaft of the second motor (42); the ring gear (41) is meshed with the driving gear (43); the ring gear (41) is arranged in the housing (2) and is fixedly connected to the material storage barrel (10); the rotation axis of the material storage barrel (10) is coaxial with the ring gear (41).

3. A concrete aggregate mortar screening system based on microwave heating according to claim 2, characterized in that: The crushing module (3) comprises a first motor (31), a rotating shaft (32), and a crushing rod (33); the first motor (31) is fixed to the side wall of the box (2); the power output shaft of the first motor (31) is axially connected to the crushing rod (33); and the storage barrel (10) rotates in the opposite direction to the crushing rod (33).

4. A concrete aggregate mortar screening system based on microwave heating according to claim 3, characterized in that: The box body (2) is provided with a first feeding port (21).

5. A concrete aggregate mortar screening system based on microwave heating according to claim 4, characterized in that: The box body (2) comprises a first box body located at the upper portion, and a second box body connected to the bottom of the first box body, and a discharge port (22) is provided at the bottom of the second box body.

6. A method for screening concrete aggregate mortar based on microwave heating, characterized in that: The concrete aggregate mortar screening system and method based on microwave heating as claimed in claim 5 is implemented, comprising the following steps: S100, adding aggregate, starting the driving module (4), rotating the storage barrel (10) until the second feeding port (102) is aligned with the first feeding port (21), opening the second feeding port (102), pouring the aggregate removed from the crushed concrete into the storage barrel (10), and closing the second feeding port (102); S200, crushing aggregate and removing mortar, adjusting the sieve plate (9) to completely stagger the first sieve hole (91) and the second sieve hole (101), starting the crushing module (3) and the driving module (4), the first motor (31) drives the rotating shaft (32) and the crushing rod (33) to rotate, the second motor (42) drives the ring gear (41), thereby driving the storage barrel (10) to rotate, the storage barrel (10) and the crushing rod (33) rotate in opposite directions, the aggregate rolls in the storage barrel (10), and is impacted and crushed by the crushing rod (33), so that the mortar on the surface of the aggregate falls off, and at the same time, the crushing rod (33) stirs the mortar accumulated in the storage barrel (10) to flow out from the second sieve hole (101) and converge at the bottom of the box body (2); S201, using microwave heating and monitoring the temperature, starting the microwave transmitter (7) to heat the aggregate in the storage barrel (10) to improve the aggregate crushing efficiency, and at the same time starting the temperature sensor (6) to monitor the temperature in the box (2) in real time. When the temperature exceeds the preset value in the alarm (8), the alarm (8) alarms to remind the staff, and at the same time starts the fan (5) to blow outside air into the box (2) to cool it down until the temperature in the box (2) is lower than the preset value; S300, screening aggregates of different sizes, closing the crushing module (3) and the driving module (4) until the crushing rod (33) and the storage barrel (10) stop rotating, inserting the pull rod (92) from the through hole on the side of the box body (2), and screwing it to the side of the screen plate (9), dragging the pull rod (92) to move the screen plate (9) along the slide rail (103), adjusting the overlapping area of the first screen hole (91) and the second screen hole (101), observing the scale plate (93) until the overlapping area is adjusted to the size of the required aggregate, removing the pull rod (92) from the screen plate (9), pulling the pull rod (92) out of the box body (2), and then starting the crushing module (3) and the driving module (4) to start screening the required aggregate.

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