A raw material mixing device for producing building waste briquette bricks and its use method

By designing a construction waste mixing device with infrared sensors and receivers, the problem of ineffective control of construction waste discharge flow in the prior art is solved, and more efficient construction waste disposal and extension of the service life of the device is achieved.

CN112275207BActive Publication Date: 2025-04-04ANHUI ZHITENG NEW ENVIRONMENTALLY FRIENDLY BUILDING MATERIALS TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202011316185.9
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2020-11-22
Publication Date
2025-04-04
Estimated Expiration
2040-11-22

AI Technical Summary

Technical Problem

The existing raw material mixing device for the production of construction waste block bricks cannot effectively control the discharge flow of construction waste, resulting in inefficient treatment.

Method used

A raw material stirring device including a feeding box, an electric flip valve, an infrared sensor and an infrared receiver is designed. Through the cooperation of the infrared sensor and the receiver, the opening and closing of the electric flip valve is controlled to realize the quantitative feeding treatment of construction waste.

Benefits of technology

Through the use of this device, the user's use pressure can be alleviated to a certain extent, the working efficiency of construction waste treatment can be improved, and the service life of the agitator device can be extended.

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Abstract

The present invention discloses a raw material stirring device for producing building waste pressed bricks and a method for using the same, which relates to the field related to building waste, and is intended to solve the problem in the prior art that the flow rate of discharged building waste cannot be controlled. An electric flap valve is arranged inside the material discharge box, and the material discharge box is provided with two of them. The material discharge box is arranged in a rectangular box shape, and the electric flap valve is arranged with two of them. The electric flap valve is fixedly connected to the material discharge box. An infrared sensor is arranged at one side of the lower end of the electric flap valve. The infrared sensor is arranged with two of them. The infrared sensor is fixedly connected to the material discharge box. An infrared receiver is arranged at one side of the infrared sensor. The infrared receiver is electrically connected to the infrared sensor. The infrared receiver is fixedly connected to the material discharge box. A material discharge pipe is arranged at the lower end of the electric flap valve. The material discharge pipe is arranged in a round tube shape. The material discharge pipe is fixedly connected to the material discharge box.
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Description

Technical Field

[0001] The invention relates to the field related to construction waste, and in particular to a raw material stirring device for producing construction waste pressed bricks and a use method thereof. Background Art

[0002] Construction waste refers to construction waste generated in engineering due to human or natural reasons, including waste soil, abandoned soil, silt and abandoned materials. These materials are of no help to the building itself, but they are substances generated in the process of construction and need to be processed accordingly in order to achieve the ideal construction of the project. Because it is an overall process, the consideration of its links is more important. In the existing processing technology, it is mostly pressed into bricks, so that it is convenient for the staff to handle it. In the process of producing construction waste pressed bricks, the raw material mixing device can be said to be the top priority.

[0003] When the existing raw material mixing device is in use, it often discharges all the mixed construction waste. Although its raw material processing efficiency is relatively high, it still requires users to spend extra time to process construction waste that exceeds the upper limit of the single processing capacity, which can easily lower the efficiency of the entire construction waste briquette brick production. Therefore, the market urgently needs to develop a raw material mixing device for the production of construction waste briquette bricks to help people solve the existing problems. Summary of the invention

[0004] The object of the present invention is to provide a raw material mixing device for producing building waste pressed bricks and a method of using the same, so as to solve the problem in the above-mentioned background technology that the flow rate of discharged building waste cannot be controlled.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a raw material mixing device for producing building waste pressed bricks, comprising a discharge box, an electric flap valve is arranged inside the discharge box, two discharge boxes are arranged, the discharge box is arranged in a rectangular box shape, two electric flap valves are arranged, the electric flap valve is fixedly connected to the discharge box, an infrared sensor is arranged on one side of the lower end of the electric flap valve, two infrared sensors are arranged, the infrared sensor is fixedly connected to the discharge box, an infrared receiver is arranged on one side of the infrared sensor, the infrared receiver is electrically connected to the infrared sensor, the infrared receiver is fixedly connected to the discharge box, a discharge pipe is arranged at the lower end of the electric flap valve, the discharge pipe is arranged in a circular tube shape, the discharge pipe is fixedly connected to the discharge box, an electric valve is arranged on the discharge pipe, and the electric valve is fixedly connected to the discharge pipe.

[0006] Preferably, a device body is provided at the upper end of the discharge box, and the device body is connected to the discharge box by manual arc welding. A pretreatment box is provided at the upper end of the device body, and a feed pipe is provided on one side of the upper end of the pretreatment box. The feed pipe is configured as a circular tube, and two feed pipes are provided, and the feed pipe is connected to the pretreatment box by manual arc welding.

[0007] Preferably, a hair dryer is provided on one side of the lower end of the feed pipe, and two of the hair dryers are provided and are symmetrically arranged. A fixing block is provided on the upper end of the hair dryer, and two of the fixing blocks are provided and are arranged to fit with the pretreatment box, and the fixing block is fixedly connected to the pretreatment box.

[0008] Preferably, a grinding head is provided on one side of the hair dryer, a first rotating shaft is provided on the upper end of the grinding head, the first rotating shaft is fixedly connected to the grinding head, a first motor is provided on the upper end of the first rotating shaft, the first motor and the first rotating shaft are connected through a coupling, a blanking plate is provided on the lower end of one side of the grinding head, the blanking plate is configured as an inclined plate, a grinding plate is provided at the lower end of the blanking plate, the material of the grinding plate and the grinding head are both configured as hard alloy, a feeding pipe is provided at the lower end of the grinding plate, the feeding pipe is configured as a circular tube, and the feeding pipe and the grinding plate are configured as an integral body.

[0009] Preferably, a connecting block is provided inside the device body, and the connecting block is configured to be a rectangular block, and two connecting blocks are provided, and the connecting block is fixedly connected to the device body, and a second rotating shaft is provided on the connecting block, and two second rotating shafts are provided, and the second rotating shaft passes through the connecting block, and a stepper motor is provided at the rear end of the second rotating shaft, and the stepper motor is connected to the second rotating shaft through a coupling, and a buffer plate is provided on the second rotating shaft, and two buffer plates are provided, and the buffer plate is configured to be a rectangular plate, and the buffer plate and the second rotating shaft are configured to be integral.

[0010] Preferably, a stirring rod is provided at the lower end of the buffer plate, and the stirring rod is configured to be in a round rod shape. A stirring bar is provided on the stirring rod, and a plurality of stirring bars are provided, and the plurality of stirring bars are arranged in a staggered manner. The stirring bar is fixedly connected to the stirring rod, and a second motor is provided on one side of the stirring rod, and the second motor is connected to the stirring rod through a coupling, and a motor shield is provided on one side of the second motor, and the motor shield is fixedly connected to the device body, and the motor shield is fixedly connected to the second motor.

[0011] Preferably, a rod sleeve is provided on the other side of the stirring rod, the rod sleeve is arranged in a circular ring shape, the rod sleeve and the stirring rod are arranged to fit together, the rod sleeve is fixedly connected to the device body, a material discharge block is provided at the lower end of the stirring rod, the material discharge block is arranged in a truncated cone shape, the material discharge block is fixedly connected to the device body, a material discharge trough is provided at the lower end of one side of the material discharge block, two material discharge troughs are provided, and the material discharge trough and the material discharge box are arranged to fit together.

[0012] A method for using a raw material mixing device for producing building waste briquette bricks, comprising the following steps:

[0013] Step 1: The user can feed the construction waste into the feed pipe through the feeding device, and send the construction waste between the grinding head and the grinding plate through the action of gravity and the blower, and drive the grinding head to rotate at high speed through the first motor, and realize the pre-crushing operation of the construction waste through the highly rotating grinding head. After the construction waste is crushed, it will enter the interior of the device body through the feed pipe under the action of gravity;

[0014] Step 2: The construction waste entering the main body of the device will be buffered by the buffer plate. After a period of time, the construction waste will be stirred by the stirring bar on the rotating stirring rod. After a period of time, the stirred construction waste will be sent into the inside of the discharge box by the discharge block.

[0015] Step 3: When there is enough construction waste entering the discharge box, the construction waste will block the infrared sensor, causing the infrared receiver to be unable to receive. When the infrared receiver cannot receive, it will control the electric flap valve to close and open the electric valve to discharge the construction waste.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The invention provides an electric flap valve, an infrared sensor and an infrared receiver. When a user uses the raw material stirring device, the user can control the opening and closing of the electric flap valve through the cooperation between the infrared sensor and the infrared receiver. The opening and closing of the electric flap valve is used to discharge a fixed amount of construction waste, thereby alleviating the user's use pressure to a certain extent.

[0018] 2. The invention provides a feed plate and a blower. When using the raw material mixing device, the user can facilitate the movement of construction waste between the grinding head and the grinding plate through the inclined feed plate. At the same time, the blower can also assist in the movement of small waste, thereby improving the working efficiency of the entire raw material mixing device to a certain extent.

[0019] 3. Through the provision of the second rotating shaft and the buffer plate, when the user uses the raw material stirring device, the user can drive the second rotating shaft to rotate through a stepper motor to complete the angle adjustment of the buffer plate, thereby preventing construction waste from directly impacting the stirring rod and the stirring bar, thereby improving the service life of the entire stirring device to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention;

[0021] Figure 2 It is a schematic diagram of the internal structure of the pretreatment box of the present invention;

[0022] Figure 3 The structural schematic diagram of the stirring rod of the present invention is

[0023] Figure 4 It is a schematic diagram of the internal structure of the device body of the present invention;

[0024] Figure 5 It is a schematic diagram of the internal structure of the material box of the present invention.

[0025] In the figure: 1. pretreatment box; 2. feed pipe; 3. first motor; 4. first rotating shaft; 5. grinding head; 6. fixed block; 7. blower; 8. discharge plate; 9. grinding plate; 10. feed pipe; 11. device body; 12. connecting block; 13. second rotating shaft; 14. buffer plate; 15. stirring rod; 16. stirring bar; 17. rod sleeve; 18. second motor; 19. motor casing; 20. discharge block; 21. discharge trough; 22. discharge box; 23. electric flap valve; 24. infrared sensor; 25. infrared receiver; 26. discharge pipe; 27. electric valve. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] See also Figure 1-5, an embodiment of the present invention provides: a raw material mixing device for producing building waste pressed bricks, comprising a feed box 22, an electric flap valve 23 is arranged inside the feed box 22, two feed boxes 22 are arranged, the feed box 22 is arranged in a rectangular box shape, two electric flap valves 23 are arranged, the electric flap valve 23 is fixedly connected to the feed box 22, an infrared sensor 24 is arranged on one side of the lower end of the electric flap valve 23, two infrared sensors 24 are arranged, the infrared sensor 24 is fixedly connected to the feed box 22, an infrared receiver 25 is arranged on one side of the infrared sensor 24, the infrared receiver 25 is electrically connected to the infrared sensor 24, the infrared receiver 25 is fixedly connected to the feed box 22, a feed pipe 26 is arranged at the lower end of the electric flap valve 23, the feed pipe 26 is arranged in a circular tube shape, the feed pipe 26 is fixedly connected to the feed box 22, an electric valve 27 is arranged on the feed pipe 26, and the electric valve 27 is fixedly connected to the feed pipe 26, and the problem of being unable to control the flow of discharged building waste can be solved by setting various structures.

[0028] Furthermore, a device body 11 is provided at the upper end of the discharge box 22, and the device body 11 is connected to the discharge box 22 by manual arc welding. A pretreatment box 1 is provided at the upper end of the device body 11, and a feed pipe 2 is provided on one side of the upper end of the pretreatment box 1. The feed pipe 2 is configured as a circular tube, and two feed pipes 2 are provided, and the feed pipe 2 is connected to the pretreatment box 1 by manual arc welding.

[0029] Furthermore, a hair dryer 7 is provided on one side of the lower end of the feed pipe 2. Two hair dryers 7 are provided and the two hair dryers 7 are symmetrically arranged. A fixing block 6 is provided on the upper end of the hair dryer 7. Two fixing blocks 6 are provided and the fixing blocks 6 are arranged to fit with the pretreatment box 1. The fixing blocks 6 are fixedly connected to the pretreatment box 1.

[0030] Furthermore, a grinding head 5 is provided on one side of the hair dryer 7, a first rotating shaft 4 is provided on the upper end of the grinding head 5, the first rotating shaft 4 is fixedly connected to the grinding head 5, a first motor 3 is provided on the upper end of the first rotating shaft 4, the first motor 3 is connected to the first rotating shaft 4 through a coupling, a blanking plate 8 is provided on the lower end of one side of the grinding head 5, the blanking plate 8 is configured as an inclined plate shape, a grinding plate 9 is provided at the lower end of the blanking plate 8, the material of the grinding plate 9 and the grinding head 5 are both configured as hard alloy, a feeding pipe 10 is provided at the lower end of the grinding plate 9, the feeding pipe 10 is configured as a circular tube shape, and the feeding pipe 10 and the grinding plate 9 are configured as an integral body.

[0031] Furthermore, a connecting block 12 is provided inside the device body 11. The connecting block 12 is configured to be a rectangular block. There are two connecting blocks 12. The connecting block 12 is fixedly connected to the device body 11. A second rotating shaft 13 is provided on the connecting block 12. There are two second rotating shafts 13. The second rotating shaft 13 passes through the connecting block 12. A stepper motor is provided at the rear end of the second rotating shaft 13, and the stepper motor is connected to the second rotating shaft 13 through a coupling. A buffer plate 14 is provided on the second rotating shaft 13. There are two buffer plates 14. The buffer plate 14 is configured to be a rectangular plate. The buffer plate 14 and the second rotating shaft 13 are configured to be integrated.

[0032] Furthermore, a stirring rod 15 is provided at the lower end of the buffer plate 14, and the stirring rod 15 is configured to be in a round rod shape. A stirring bar 16 is provided on the stirring rod 15, and a plurality of stirring bars 16 are provided, and the plurality of stirring bars 16 are arranged in a staggered manner. The stirring bars 16 are fixedly connected to the stirring rod 15, and a second motor 18 is provided on one side of the stirring rod 15. The second motor 18 is connected to the stirring rod 15 through a coupling, and a motor casing 19 is provided on one side of the second motor 18. The motor casing 19 is fixedly connected to the device body 11, and the motor casing 19 is fixedly connected to the second motor 18.

[0033] Furthermore, a rod sleeve 17 is provided on the other side of the stirring rod 15, and the rod sleeve 17 is arranged in a circular ring shape. The rod sleeve 17 and the stirring rod 15 are arranged to fit together, and the rod sleeve 17 is fixedly connected to the device body 11. A material discharge block 20 is provided at the lower end of the stirring rod 15, and the material discharge block 20 is arranged in a truncated cone shape. The material discharge block 20 is fixedly connected to the device body 11, and a material discharge trough 21 is provided at the lower end of one side of the material discharge block 20. Two material discharge troughs 21 are provided, and the material discharge trough 21 and the material discharge box 22 are arranged to fit together.

[0034] A method for using a raw material mixing device for producing building waste briquette bricks, comprising the following steps:

[0035] Step 1: The user can feed the construction waste into the feed pipe 2 through the feeding device, and send the construction waste between the grinding head 5 and the grinding plate 9 through the action of gravity and the blower 7, and drive the grinding head 5 to rotate at a high speed through the first motor 3, and the construction waste is pre-crushed by the highly rotating grinding head 5. After the construction waste is crushed, it will enter the inside of the device body 11 through the feeding pipe 10 under the action of gravity;

[0036] Step 2: The construction waste entering the device body 11 is buffered by the buffer plate 14. After a period of time, the construction waste is stirred by the stirring bar 16 on the rotating stirring rod 15. After a period of time, the stirred construction waste is sent into the inside of the discharge box 22 by the discharge block 20.

[0037] Step 3: When there is enough construction waste entering the discharge box 22, the construction waste will block the infrared sensor 24, thereby causing the infrared receiver 25 to be unable to receive. When the infrared receiver 25 cannot receive, the electric flap valve 23 will be controlled to close, and the electric valve 27 will be opened to discharge the construction waste.

[0038] Working principle: When in use, first check the entire raw material mixing device. After the user confirms that the inspection is correct, the device can be used. The user can use the feeding device to feed the construction waste into the feed pipe 2, and use gravity and the blower 7 to send the construction waste between the grinding head 5 and the grinding plate 9, and drive the grinding head 5 to rotate at high speed through the first motor 3. The highly rotating grinding head 5 is used to achieve pre-crushing of the construction waste. The crushed construction waste will enter the device body 11 through the feeding pipe 10 under the action of gravity. The construction waste entering the device body 11 will be buffered by the buffer plate 14. After a period of time, the construction waste will be stirred under the action of the stirring bars 16 on the rotating stirring rod 15. After a period of time, the stirred construction waste will be sent to the inside of the discharge box 22 under the action of the discharge block 20. When there is enough construction waste entering the discharge box 22, the construction waste will block the infrared sensor 24, thereby causing the infrared receiver 25 to be unable to receive. When the infrared receiver 25 cannot receive the operation, the electric flap valve 23 will be controlled to close, and the electric valve 27 will be opened to discharge the construction waste. At the same time, when the user uses the raw material stirring device, the infrared sensor 24 and the infrared receiver 25 can cooperate with each other to control the opening and closing of the electric flap valve 23. The opening and closing of the electric flap valve 23 can realize the unloading of quantitative construction waste, which can alleviate the user's use pressure to a certain extent. At the same time, the inclined unloading plate 8 can be used to facilitate the movement of construction waste between the grinding head 5 and the grinding plate 9. At the same time, the hair dryer 7 can be used to assist in the movement of smaller mass garbage, which can improve the working efficiency of the entire raw material stirring device to a certain extent. Finally, the second rotating shaft 13 can be driven to rotate by a stepper motor to complete the angle adjustment of the buffer plate 14, thereby preventing construction waste from directly impacting the stirring rod 15 and the stirring bar 16, which can improve the service life of the entire stirring device to a certain extent.

[0039] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A raw material mixing device for producing building waste briquette bricks, comprising a material discharge box (22), characterized in that: An electric flap valve (23) is arranged inside the material discharge box (22), two of which are arranged, the material discharge box (22) is arranged in a rectangular box shape, two of which are arranged, and the electric flap valve (23) is fixedly connected to the material discharge box (22); an infrared sensor (24) is arranged on one side of the lower end of the electric flap valve (23), two of which are arranged, and the infrared sensor (24) is fixedly connected to the material discharge box (22); an infrared receiver (25) is arranged on one side of the infrared sensor (24), the infrared receiver (25) is electrically connected to the infrared sensor (24), and the infrared receiver (25) is connected to the material discharge box (22). The electric flap valve (23) is fixedly connected, a feed pipe (26) is arranged at the lower end of the electric flap valve (23), the feed pipe (26) is arranged in a circular tube shape, the feed pipe (26) is fixedly connected to the feed box (22), an electric valve (27) is arranged on the feed pipe (26), the electric valve (27) is fixedly connected to the feed pipe (26), a device body (11) is arranged at the upper end of the feed box (22), the device body (11) and the feed box (22) are connected by manual arc welding, a pretreatment box (1) is arranged at the upper end of the device body (11), a feed pipe (2) is arranged on one side of the upper end of the pretreatment box (1), the feed pipe (2) is arranged in a circular tube shape, two feed pipes (2) are arranged, the feed pipe (2) and the pretreatment box (1) are connected by manual arc welding, the device body (11) A connecting block (12) is arranged inside the device, the connecting block (12) is arranged in a rectangular block shape, two connecting blocks (12) are arranged, and the connecting block (12) is fixedly connected to the device body (11); a second rotating shaft (13) is arranged on the connecting block (12), two second rotating shafts (13) are arranged, the second rotating shaft (13) passes through the connecting block (12), a stepping motor is arranged at the rear end of the second rotating shaft (13), and the stepping motor and the second rotating shaft (13) are connected via a coupling; a buffer plate (14) is arranged on the second rotating shaft (13), two buffer plates (14) are arranged, the buffer plate (14) is arranged in a rectangular plate shape, and the buffer plate (14) and the second rotating shaft (13) are connected. The feed pipe (2) is configured in an integrated manner. A blower (7) is provided on one side of the lower end of the feed pipe (2). Two blowers (7) are provided. The two blowers (7) are symmetrically arranged. A fixing block (6) is provided on the upper end of the blower (7). Two fixing blocks (6) are provided. The fixing block (6) is configured to fit the pretreatment box (1). The fixing block (6) is fixedly connected to the pretreatment box (1). A grinding head (5) is provided on one side of the blower (7). A first rotating shaft (4) is provided on the upper end of the grinding head (5). The first rotating shaft (4) is fixedly connected to the grinding head (5).A first motor (3) is disposed at the upper end of the first rotating shaft (4), and the first motor (3) is connected to the first rotating shaft (4) via a coupling. A blanking plate (8) is disposed at the lower end of one side of the grinding head (5), and the blanking plate (8) is configured as an inclined plate. A grinding plate (9) is disposed at the lower end of the blanking plate (8), and the material of the grinding plate (9) and the grinding head (5) are both configured as hard alloy. A feeding pipe (10) is disposed at the lower end of the grinding plate (9), and the feeding pipe (10) is configured as a circular tube. The feeding pipe (10) and the grinding plate (9) are configured as an integral body.

2. A raw material stirring device for producing building waste briquette bricks according to claim 1, characterized in that: A stirring rod (15) is provided at the lower end of the buffer plate (14), the stirring rod (15) being arranged in a round rod shape, a stirring bar (16) being provided on the stirring rod (15), a plurality of the stirring bars (16) being provided, the plurality of the stirring bars (16) being arranged in a staggered manner, the stirring bars (16) being fixedly connected to the stirring rod (15), a second motor (18) being provided on one side of the stirring rod (15), the second motor (18) being connected to the stirring rod (15) via a coupling, a motor protective shell (19) being provided on one side of the second motor (18), the motor protective shell (19) being fixedly connected to the device body (11), and the motor protective shell (19) being fixedly connected to the second motor (18).

3. A raw material stirring device for producing construction waste briquette bricks according to claim 2, characterized in that: A rod sleeve (17) is provided on the other side of the stirring rod (15), the rod sleeve (17) is arranged in a circular ring shape, the rod sleeve (17) and the stirring rod (15) are arranged to fit together, the rod sleeve (17) is fixedly connected to the device body (11), a material discharge block (20) is provided at the lower end of the stirring rod (15), the material discharge block (20) is arranged in a truncated cone shape, the material discharge block (20) is fixedly connected to the device body (11), a material discharge trough (21) is provided at the lower end of one side of the material discharge block (20), two material discharge troughs (21) are provided, and the material discharge trough (21) and the material discharge box (22) are arranged to fit together.

4. A method for using a raw material mixing device for producing building waste briquette bricks, based on the raw material mixing device for producing building waste briquette bricks as claimed in claim 3, characterized in that: The steps include: Step 1: The user can feed the construction waste into the feed pipe (2) through the feeding device, and send the construction waste between the grinding head (5) and the grinding plate (9) through the action of gravity and the blower (7), and drive the grinding head (5) to rotate at a high speed through the first motor (3). The high-speed rotating grinding head (5) is used to perform a pre-crushing operation on the construction waste. After the crushing is completed, the construction waste will enter the interior of the device body (11) through the feed pipe (10) under the action of gravity; Step 2: The construction waste entering the device body (11) is buffered by the buffer plate (14). After a period of time, the construction waste is stirred by the stirring bar (16) on the rotating stirring rod (15). After a period of time, the stirred construction waste is sent into the interior of the discharge box (22) by the discharge block (20). Step 3: When there is enough construction waste entering the discharge box (22), the construction waste will block the infrared sensor (24), thereby causing the infrared receiver (25) to be unable to perform the receiving operation. When the infrared receiver (25) is unable to receive, it will control the electric flap valve (23) to close, and open the electric valve (27) to discharge the construction waste.

Citation Information

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