Anti-freezing recycled concrete production system and production method

Abstract

The application relates to the technical field of concrete production systems, and discloses an anti-freezing recycled concrete production system and a production method, which comprise a storage barrel, the storage barrel is vertically arranged on a horizontal plane, the bottom of the storage barrel is conical, a material injection valve is arranged on one side of the storage barrel, a discharge port is arranged at the bottom of the storage barrel, a first discharge pipe and a second discharge pipe are symmetrically arranged at the discharge port, and the first discharge pipe and the second discharge pipe are circularly arranged at the bottom of the storage barrel. Through the cooperation of the linkage cleaning material transferring device, the dredging discharge rod and the cleaning scraper, the weighed raw material is synchronously transferred while the weighing of the raw material is completed, the discharge port is blocked to stop discharging, the raw material adhered to the side wall of the weighing equipment is scraped and cleaned during the raw material transferring process, and the discharge port is dredged before the next discharging.

Description

Technical Field

[0001] This invention relates to the field of concrete production system technology, specifically to a freeze-resistant recycled concrete production system and production method. Background Technology

[0002] Recycled concrete refers to new concrete made by crushing, washing, and grading waste concrete blocks, mixing them with aggregates in a certain proportion, partially or completely replacing natural aggregates such as sand and gravel (mainly coarse aggregates), and then adding cement, water, etc. Concrete with a frost resistance grade ≥ F50 is called frost-resistant concrete.

[0003] A recycled concrete production system, disclosed in CN112606214A, includes a support frame, a material storage silo, a material weighing device, and a conveying device. The material storage silo is equipped with a dredging device to effectively clear the raw materials within, reducing the likelihood of clumping and clogging the discharge port, thus ensuring timely discharge and improving production efficiency. The material weighing device has vibration devices on both sides to effectively shake off raw materials adhering to the inner wall, reducing material adhesion and ensuring more accurate proportions, thereby improving the quality of the recycled concrete. The conveying device has a cleaning device at the bottom to effectively sweep away raw materials adhering to it, enabling recycling and achieving energy conservation and environmental protection.

[0004] However, the application has the following problems: First, the solution to the blockage of the unloading port of the material storage silo in the application is to use a dredging rod with lifting and rotating functions to pass through the unloading port inside the material storage silo in order to dredge the blocked unloading port. However, when there is a lot of raw material in the material storage silo, it is difficult for the dredging rod to move inside. Moreover, as the dredging rod descends, it may cause some of the raw material located below the dredging rod to descend as well, causing more serious blockage of the unloading port.

[0005] Secondly, the application addresses the raw materials adhering to the inner wall of the material weighing equipment by tapping the side of the weighing equipment to generate vibration, thereby shaking off the raw materials adhering to the side wall. However, this method carries the risk of damaging the weighing equipment. Summary of the Invention

[0006] The purpose of this invention is to provide a freeze-resistant recycled concrete production system and method to solve the problems mentioned in the background art. To achieve the above objective, this invention provides the following technical solution: a storage hopper is included, the storage hopper is vertically arranged on a horizontal plane, the bottom of the storage hopper is conical, a feeding valve is provided on one side of the storage hopper, and a discharge port is provided at the bottom of the storage hopper. A first discharge pipe and a second discharge pipe are symmetrically arranged at the discharge port, and the first discharge pipe and the second discharge pipe are arranged in a ring at the bottom of the storage hopper.

[0007] A weighing box is provided below the storage hopper. The upper and lower ends of the weighing box are open. A first feeding plate and a second feeding plate are symmetrically and horizontally arranged at the bottom opening of the weighing box. The side ends of the first feeding plate and the second feeding plate are rotatably connected to the side ends of the bottom of the weighing box by a shaft. When the first feeding plate and the second feeding plate are in a horizontal state, the bottom opening of the weighing box is closed. A weighing module is provided at the bottom of the second feeding plate.

[0008] The weighing box is equipped with a linkage cleaning and material transfer device. The top of the linkage cleaning and material transfer device is vertically equipped with a dredging and unloading rod, and the top of the dredging and unloading rod passes through the unloading port and is located inside the storage barrel.

[0009] Preferably, the linkage cleaning and material transfer device includes a linkage component and a cleaning component. The linkage component is disposed on both sides of the weighing box, and the cleaning component is disposed on the linkage component. The linkage component includes an electric push rod, a toothed plate, a limiting cylinder, a lifting rod, a first gear, a second gear, a first pulley, a second pulley, and a transmission belt. The weighing box has slots on both sides. There are two first gears, which are symmetrically and rotatably disposed in the two slots, and one side of each of the two first gears is located outside the weighing box. There are two second gears, which are rotatably disposed inside the slots, and each first gear meshes with the adjacent second gear.

[0010] There are two first pulleys, which are symmetrically arranged on one side of the weighing box. Each first pulley is connected to a second gear and the rotating connection of the weighing box. There are two second pulleys, which are connected to the first feed plate and the rotating connection of the second feed plate to the lower end of the weighing box. There are two transmission belts, and each first pulley and second pulley is fitted with a transmission belt.

[0011] The electric push rod and the limiting cylinder are symmetrically arranged on both sides of the weighing box. The lifting rod passes vertically through the top of the limiting cylinder and slides up and down with it. The top of the lifting rod is flush with the top of the output end of the electric push rod. There are two toothed plates, which are symmetrically arranged on both sides of the weighing box. The tops of the two toothed plates are fixedly connected to the output end of the electric push rod and the top of the lifting rod, respectively. Each toothed plate has several teeth on the side near the first gear at its lower end. When the toothed plate descends, the teeth on the toothed plate mesh with the first gear.

[0012] Preferably, the cleaning assembly includes a cleaning scraper and a connecting rod. The cleaning scraper is square in shape with a hollow center. The cleaning scraper is located directly above the weighing box, and the top two sides of the cleaning scraper are fixedly connected to the bottom of one side of two toothed plates. When the cleaning scraper is inside the weighing box, the outer wall of the cleaning scraper fits against the inside of the weighing box. The connecting rod is vertically arranged, and the bottom of the connecting rod is fixedly connected to the inner side of the cleaning scraper. The top of the connecting rod is fixedly connected to the bottom center of the unblocking discharge rod. The diameter of the unblocking discharge rod is the same as the diameter of the discharge port, and the diameter of the connecting rod is smaller than the diameter of the discharge port.

[0013] Preferably, the joint between the first and second feeding plates is provided with a magnetic attracting element that attracts each other magnetically.

[0014] Preferably, the outer side of the connecting rod is provided with a plurality of first protrusions, and the inner side of the first unloading pipe and the second unloading pipe is provided with second protrusions at positions corresponding to the first protrusions. Both sides of the bottom of the storage barrel are provided with mounting brackets. The side ends of the first unloading pipe and the second unloading pipe pass through the two mounting brackets respectively and are slidably engaged with them. Each mounting bracket is provided with a spring inside, and the two ends of the spring are fixedly connected to the inner side of the mounting bracket and the side end of the first unloading pipe respectively.

[0015] Preferably, the storage hopper is provided with an accelerating discharge cylinder, which is vertically installed inside the storage hopper. The top of the accelerating discharge cylinder passes through the top of the storage hopper. One side of the accelerating discharge cylinder is connected to an air outlet, which is set downwards. The top of the unblocking discharge rod is located inside the accelerating discharge cylinder, and the unblocking discharge rod slides vertically with the accelerating discharge cylinder.

[0016] Preferably, a one-way valve is provided at the top of the accelerating discharge cylinder and at the air outlet.

[0017] Preferably, the production method of the frost-resistant recycled concrete production system includes the following steps:

[0018] S1: First, inject the raw materials needed for producing recycled concrete into the storage tank through the injection valve. At this time, the unblocking rod is located at the bottom of the storage tank, and the end of the unblocking rod is used to block the discharge port to prevent the raw materials inside the storage tank from leaking out.

[0019] S2: By controlling the linkage cleaning and material transfer device, the unblocking and feeding rod moves upward inside the storage barrel, exposing the discharge port. At this time, the first and second feeding plates at the bottom of the weighing box are in a state of mutual docking, sealing the bottom of the weighing box. The raw materials inside the storage barrel fall into the weighing box through the discharge port for weighing.

[0020] S3: The weighing module identifies the weight of the raw materials falling into the weighing box. When the weight of the raw materials in the weighing box reaches the specified requirement, the linkage cleaning and material transfer device is controlled to work, driving the unblocking and feeding rod to descend in the storage bucket. During the descent, the discharge port at the bottom of the storage bucket is blocked, and the unblocking and feeding rod continues to descend. The linkage cleaning and material transfer device descends synchronously, and the first and second feeding plates at the bottom of the linkage weighing box are simultaneously rotated 90 degrees away from the opposite side to a vertical state, exposing the opening at the bottom of the weighing box, transferring the raw materials in the weighing box to the outside of the weighing box. The linkage cleaning and material transfer device descends in a straight line along the inner wall of the weighing box until it moves to the lower end of the first and second feeding plates. Thus, while completing the transfer of raw materials, the raw materials adhering to the inner wall of the weighing box, the first feeding plate, and the second feeding plate are scraped off.

[0021] S4: After the cleaning and material transfer operations are completed, control the unblocking discharge rod to rise and reset, re-exposing the discharge port and closing the opening at the bottom of the weighing box to facilitate subsequent material weighing operations. During the rising of the unblocking discharge rod, the material blocked at the discharge port can be unblocked.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] In this invention, the weight of the raw materials falling into the weighing box is identified by the weighing module. When the weight of the raw materials in the weighing box reaches the specified requirement, the linkage cleaning and material transfer device is controlled to work, driving the unblocking and feeding rod to descend in the storage bucket. During the descent, the discharge port at the bottom of the storage bucket is blocked, and the unblocking and feeding rod continues to descend. The linkage cleaning and material transfer device descends synchronously, and the first and second feeding plates at the bottom of the weighing box are simultaneously rotated 90 degrees away from the opposite side to a vertical state, exposing the opening at the bottom of the weighing box, transferring the raw materials in the weighing box to the outside of the weighing box. Meanwhile, the linkage cleaning and material transfer device descends in a straight line along the inner wall of the weighing box until it moves to the lower end of the first and second feeding plates. Thus, while completing the transfer of raw materials, the raw materials adhering to the inner wall of the weighing box, the first feeding plate, and the second feeding plate are scraped off.

[0024] In this invention, after the cleaning and material transfer operations are completed, the unblocking discharge rod is controlled to rise and reset, so as to expose the discharge port and close the opening at the bottom of the weighing box, so as to facilitate the subsequent raw material weighing operation. During the rising of the unblocking discharge rod, the raw material blocked at the discharge port is unblocked.

[0025] In this invention, as the connecting rod and the unblocking discharge rod descend, the first protrusion on the side end of the connecting rod and the first discharge pipe contact the second protrusion on the inner side of the second discharge pipe, thereby pushing the first discharge pipe and the second discharge pipe out to both sides simultaneously. Under the action of the spring, the first discharge pipe and the second discharge pipe quickly reset. Under this movement, the raw material blocked between the first discharge pipe and the second discharge pipe can be quickly discharged, avoiding the problem of the unblocking discharge rod being unable to move due to the blockage of raw material.

[0026] In this invention, the one-way valve at the top of the accelerating discharge cylinder can control the internal airflow to prevent it from escaping, while the external airflow from the storage tank can enter the accelerating discharge cylinder. The one-way valve at the air outlet can control the internal airflow of the accelerating discharge cylinder to exit, while the external airflow cannot enter the accelerating discharge cylinder through the air inlet. When the unblocking discharge rod rises to expose the discharge port, the unblocking discharge rod rises inside the accelerating discharge cylinder, generating airflow inside the accelerating discharge cylinder. The airflow generated by the unblocking discharge rod is discharged back into the storage tank through the one-way valve at the air outlet. The generated airflow pushes the raw materials inside, thereby achieving the effect of accelerating the raw material discharge rate. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0028] Figure 2 This is a partial structural diagram of the present invention. Figure 1 ;

[0029] Figure 3 This is a partial structural diagram of the present invention. Figure 2 ;

[0030] Figure 4 This is a partial structural diagram of the present invention. Figure 3 ;

[0031] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0032] Figure 6 This is a schematic diagram showing the state of the first and second cutting plates when they are unfolded in this invention.

[0033] Figure 7 This is a first-state cross-sectional view of the interior of the storage hopper in this invention;

[0034] Figure 8This is a cross-sectional view of the interior of the storage tank in the present invention in a second state.

[0035] Figure 9 This is a schematic diagram of the first state structure of the present invention;

[0036] Figure 10 This is a schematic diagram of the second state structure of the present invention.

[0037] In the diagram: 1. Storage hopper; 2. Injection valve; 3. Discharge port; 31. First discharge pipe; 32. Second discharge pipe; 4. Weighing box; 41. First discharge plate; 42. Second discharge plate; 43. Weighing module; 5. Linked cleaning and material transfer device; 51. Linkage component; 511. Electric push rod; 512. Toothed plate; 513. Limiting cylinder; 514. Lifting rod; 515. First gear; 516. Second gear; 517. First pulley; 518. Second pulley; 519. Transmission belt; 52. Cleaning component; 521. Cleaning scraper; 522. Connecting rod; 6. Unblocking discharge rod; 7. First protrusion; 8. Second protrusion; 9. Mounting bracket; 10. Spring; 11. Accelerating discharge cylinder; 12. Air outlet; 13. One-way valve. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] Please see Figures 1 to 10 The present invention provides a technical solution: including a storage tank 1, the storage tank 1 is vertically arranged on a horizontal plane, the bottom of the storage tank 1 is conical, a feeding valve 2 is provided on one side of the storage tank 1, a discharge port 3 is provided at the bottom of the storage tank 1, a first discharge pipe 31 and a second discharge pipe 32 are symmetrically arranged at the discharge port 3, the first discharge pipe 31 and the second discharge pipe 32 are arranged in a ring at the bottom of the storage tank 1;

[0040] A weighing box 4 is provided below the storage hopper 1. The upper and lower ends of the weighing box 4 are open. A first feeding plate 41 and a second feeding plate 42 are symmetrically and horizontally arranged at the bottom opening of the weighing box 4. The side ends of the first feeding plate 41 and the second feeding plate 42 are rotatably connected to the side ends of the bottom of the weighing box 4 by a shaft. When the first feeding plate 41 and the second feeding plate 42 are in a horizontal state, the bottom opening of the weighing box 4 is closed. A weighing module 43 is provided at the bottom of the second feeding plate 42.

[0041] The weighing box 4 is equipped with a linkage cleaning and material transfer device 5. The top of the linkage cleaning and material transfer device 5 is vertically equipped with a clearing and unloading rod 6, and the top of the clearing and unloading rod 6 passes through the unloading port 3 and is located inside the storage bucket 1.

[0042] In this embodiment, as Figures 2 to 8 As shown, the linkage cleaning and material transfer device 5 includes a linkage component 51 and a cleaning component 52. The linkage component 51 is disposed on both sides of the weighing box 4, and the cleaning component 52 is disposed on the linkage component 51. The linkage component 51 includes an electric push rod 511, a toothed plate 512, a limiting cylinder 513, a lifting rod 514, a first gear 515, a second gear 516, a first pulley 517, a second pulley 518, and a transmission belt 519. The weighing box 4 has slots on both sides. There are two first gears 515, which are symmetrically and rotatably disposed in the two slots, and one side of each of the two first gears 515 is located on the outside of the weighing box 4. There are two second gears 516, which are rotatably disposed inside the slots, and each first gear 515 meshes with the adjacent second gear 516.

[0043] There are two first pulleys 517, which are symmetrically arranged on one side of the weighing box 4. Each first pulley 517 is connected to a second gear 516 and the rotating connection of the weighing box 4. There are two second pulleys 518, which are connected to the rotating connection of the first feed plate 41 and the second feed plate 42 to the lower end of the weighing box 4. There are two transmission belts 519, and each first pulley 517 and each second pulley 518 is fitted with a transmission belt 519.

[0044] The electric push rod 511 and the limiting cylinder 513 are symmetrically arranged on both sides of the weighing box 4. The lifting rod 514 vertically passes through the top of the limiting cylinder 513 and slides up and down with it. The top of the lifting rod 514 is flush with the top of the output end of the electric push rod 511. There are two toothed plates 512, which are symmetrically arranged on both sides of the weighing box. The tops of the two toothed plates 512 are fixedly connected to the output end of the electric push rod 511 and the top of the lifting rod 514, respectively. Each toothed plate 512 has several teeth on the side of its lower end near the first gear 515. When the toothed plate 512 descends, the teeth on the toothed plate 512 mesh with the first gear 515.

[0045] The cleaning component 52 includes a cleaning scraper 521 and a connecting rod 522. The cleaning scraper 521 is square in shape and has a hollow center. The cleaning scraper 521 is located directly above the weighing box 4, and the top two sides of the cleaning scraper 521 are fixedly connected to the bottom of one side of two toothed plates 512 respectively. When the cleaning scraper 521 is inside the weighing box 4, the outer wall of the cleaning scraper 521 is in contact with the inside of the weighing box 4. The connecting rod 522 is vertically arranged. The bottom of the connecting rod 522 is fixedly connected to the inner side of the cleaning scraper 521, and the top of the connecting rod 522 is fixedly connected to the bottom center of the unblocking discharge rod 6. The diameter of the unblocking discharge rod 6 is the same as the diameter of the discharge port 3, and the diameter of the connecting rod 522 is smaller than the diameter of the discharge port 3.

[0046] The first feeding plate 41 and the second feeding plate 42 are provided with magnetic attracting elements that attract each other magnetically.

[0047] In the initial state, the unblocking discharge rod 6 is located at the upper part of the storage tank 1, the connecting rod 522 is inside the discharge port 3 but does not contact it, and the first discharge plate 41 and the second discharge plate 42 are in a horizontally connected state. At this time, the raw material in the storage tank 1 falls into the weighing box 4 through the discharge port 3. After the weighing module 43 reaches the specified weight, the electric push rod 511 is controlled to work. The output end of the electric push rod 511 retracts, and the lifting rod 514 descends in the limiting cylinder 513, thereby controlling the unblocking discharge rod 6 to descend. During the descent, the discharge port 3 is continuously blocked to prevent the raw material from leaking out. At this time, the toothed plate 512 and the cleaning scraper 521 descend synchronously. The toothed plate 512 descends. When it reaches a certain height, it meshes with the first gear 515, causing the first gear 515 to rotate. With the cooperation of the second gear 516, the first pulley 517, the second pulley 518 and the transmission belt 519, the first feeding plate 41 and the second feeding plate 42 are rotated 90 degrees away from the opposite side to a vertical state, exposing the opening at the bottom of the weighing box 4. The raw materials in the weighing box 4 are transferred to the outside of the weighing box 4, and the cleaning scraper 521 continues to descend inside the weighing box 4 until it descends to the bottom of the first feeding plate 41 and the second feeding plate 42, thereby achieving the effect of scraping and cleaning the raw materials adhering to the inner wall of the weighing box 4, the first feeding plate 41 and the second feeding plate 42.

[0048] After the material transfer and cleaning operations are completed, the output end of the control electric push rod 511 is reset, the cleaning scraper 521 rises and resets, and the first and second feeding plates are reset to a horizontal docking state. The docking point of the first and second feeding plates adopts a magnetic attraction design, which makes the docking more stable and prevents the raw materials in the weighing box 4 from leaking out. During the process of the unloading rod 6 rising in the storage bucket 1, it can unblock the raw materials in the unloading port 3. After rising to a certain height, it detaches from the unloading port 3 and exposes the unloading port 3, which facilitates the raw material unloading and weighing operation.

[0049] In this embodiment, as Figure 7 and Figure 8 As shown, the connecting rod 522 has several first protrusions 7 on its outer side, and the first unloading pipe 31 and the second unloading pipe 32 have second protrusions 8 on their inner sides corresponding to the positions of the first protrusions 7. The bottom of the storage barrel 1 has mounting brackets 9 on both sides. The side ends of the first unloading pipe 31 and the second unloading pipe 32 pass through the two mounting brackets 9 respectively and slide with them. Each mounting bracket 9 has a spring 10 inside, and the two ends of the spring 10 are fixedly connected to the inner side of the mounting bracket 9 and the side end of the first unloading pipe 31 respectively.

[0050] As the connecting rod 522 and the unblocking discharge rod 6 descend, the first protrusion 7 on the side end of the connecting rod 522 and the first discharge pipe 31 contact the second protrusion 8 on the inner side of the second discharge pipe 32, thereby pushing the first discharge pipe 31 and the second discharge pipe 32 out to both sides simultaneously. Under the action of the spring 10, the first discharge pipe 31 and the second discharge pipe 32 quickly reset. Under this movement, the raw material blocked between the first discharge pipe 31 and the second discharge pipe 32 can be quickly discharged, avoiding the problem of the unblocking discharge rod 6 being unable to move due to the blockage of raw material.

[0051] In this embodiment, as Figures 9 to 10 As shown, the storage hopper 1 is equipped with an accelerating discharge cylinder 11 inside. The accelerating discharge cylinder 11 is vertically installed inside the storage hopper 1. The top of the accelerating discharge cylinder 11 passes through the top of the storage hopper 1. One side of the accelerating discharge cylinder 11 is connected to an air outlet 12, which is set downwards. The top of the unblocking discharge rod 6 is located inside the accelerating discharge cylinder 11, and the unblocking discharge rod 6 slides vertically with the accelerating discharge cylinder 11.

[0052] One-way valves 13 are provided at the top of the accelerating discharge cylinder 11 and at the air outlet 12;

[0053] The one-way valve 13 at the top of the accelerating discharge cylinder 11 can control the internal airflow to prevent it from leaving. External airflow from the storage tank 1 can enter the accelerating discharge cylinder 11, while the one-way valve 13 at the air outlet 12 can control the internal airflow of the accelerating discharge cylinder 11 to be discharged. External airflow cannot enter the accelerating discharge cylinder 11 through the air inlet. When the unblocking discharge rod 6 rises to expose the discharge port 3, the unblocking discharge rod 6 rises inside the accelerating discharge cylinder 11, generating airflow inside the accelerating discharge cylinder 11. The airflow generated by the unblocking discharge rod 6 is discharged back into the storage tank 1 through the one-way valve 13 at the air outlet 12. The generated airflow pushes the raw material inside, thereby achieving the effect of accelerating the raw material discharge rate.

[0054] The production method and advantages of this invention: The production method of this frost-resistant recycled concrete production system works as follows:

[0055] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 As shown:

[0056] S1: First, inject the raw materials required for producing recycled concrete into the storage tank 1 through the injection valve 2. At this time, the unblocking rod is located at the lower part of the storage tank 1, and the end of the unblocking discharge rod 6 is blocked to prevent the raw materials inside the storage tank 1 from leaking out.

[0057] S2: By controlling the linkage cleaning and material transfer device 5 to work, the unblocking and feeding rod 6 is moved upward inside the storage bucket 1, exposing the discharge port 3. At this time, the first feeding plate 41 and the second feeding plate 42 at the bottom of the weighing box 4 are in a state of mutual docking, and the bottom of the weighing box 4 is closed. The raw material inside the storage bucket 1 falls into the weighing box 4 through the discharge port 3 for weighing operation.

[0058] S3: The weighing module 43 identifies the weight of the raw material falling into the weighing box 4. When the weight of the raw material in the weighing box 4 reaches the specified requirement, the linkage cleaning and material transfer device 5 is controlled to work, driving the unblocking and feeding rod 6 to descend in the storage bucket 1. During the descent, the discharge port 3 at the bottom of the storage bucket 1 is blocked, and the unblocking and feeding rod 6 continues to descend. The linkage cleaning and material transfer device 5 descends synchronously, and the first feeding plate 41 and the second feeding plate 42 at the bottom of the linkage weighing box 4 are simultaneously rotated 90 degrees away from the opposite side to a vertical state, exposing the opening at the bottom of the weighing box 4. The raw material in the weighing box 4 is transferred to the outside of the weighing box 4, and the linkage cleaning and material transfer device 5 descends in a straight line along its inner wall inside the weighing box 4 until it moves to the lower end of the first feeding plate 41 and the second feeding plate 42. Thus, while completing the transfer of raw material, the raw material adhering to the inner wall of the weighing box 4, the first feeding plate 41 and the second feeding plate 42 are scraped off.

[0059] S4: After the cleaning and material transfer operations are completed, control the unblocking discharge rod 6 to rise and reset, so as to expose the discharge port 3 and the opening at the bottom of the closed weighing box 4 again, so as to facilitate the subsequent material weighing operation. During the rising of the unblocking discharge rod 6, the material blocked at the discharge port 3 can be unblocked.

[0060] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A freeze-resistant recycled concrete production system, characterized in that, Includes a storage tank (1), which is vertically set on a horizontal surface. The bottom of the storage tank (1) is conical. A feeding valve (2) is provided on one side of the storage tank (1). A discharge port (3) is provided at the bottom of the storage tank (1). A first discharge pipe (31) and a second discharge pipe (32) are symmetrically arranged at the discharge port (3). The first discharge pipe (31) and the second discharge pipe (32) are arranged in a ring at the bottom of the storage tank (1). A weighing box (4) is provided below the storage hopper (1). The upper and lower ends of the weighing box (4) are open. A first feeding plate (41) and a second feeding plate (42) are symmetrically and horizontally arranged at the bottom opening of the weighing box (4). The side ends of the first feeding plate (41) and the second feeding plate (42) are rotatably connected to the side ends of the bottom of the weighing box (4) by a shaft. When the first feeding plate (41) and the second feeding plate (42) are in a horizontal state, the bottom opening of the weighing box (4) is closed. A weighing module (43) is provided at the bottom of the second feeding plate (42). The weighing box (4) is equipped with a linkage cleaning and material transfer device (5). The top of the linkage cleaning and material transfer device (5) is vertically equipped with a dredging and unloading rod (6), and the top of the dredging and unloading rod (6) passes through the unloading port (3) and is located inside the storage bucket (1). The linkage cleaning and material transfer device (5) includes a linkage component (51) and a cleaning component (52). The linkage component (51) is arranged on both sides of the weighing box (4), and the cleaning component (52) is arranged on the linkage component (51). When the electric push rod (511) retracts, it sequentially drives the unblocking feed rod (6) to descend to block the discharge port (3), the cleaning scraper (521) to descend to scrape off the raw material adhering to the inner wall of the weighing box (4), and the first feed plate (41) and the second feed plate (42) to rotate 90° towards each other to open the bottom of the weighing box (4) for material transfer. When the electric push rod (511) extends, it sequentially drives the unblocking discharge rod (6) to rise to unblock and open the discharge port (3), the first discharge plate (41) and the second discharge plate (42) to flip and reset in opposite directions to close the bottom of the weighing box (4), and the cleaning scraper (521) to rise and reset.

2. The freeze-resistant recycled concrete production system according to claim 1, characterized in that: The linkage assembly (51) includes an electric push rod (511), a toothed plate (512), a limiting cylinder (513), a lifting rod (514), a first gear (515), a second gear (516), a first pulley (517), a second pulley (518), and a transmission belt (519). The weighing box (4) has slots on both sides. There are two first gears (515), which are symmetrically and rotatably arranged in the two slots. One side of each of the two first gears (515) is located outside the weighing box (4). There are two second gears (516), which are rotatably arranged inside the slots. Each first gear (515) meshes with the adjacent second gear (516). There are two first pulleys (517), which are symmetrically arranged on one side of the weighing box (4). Each first pulley (517) is connected to a second gear (516) and the rotating connection of the weighing box (4). There are two second pulleys (518), which are connected to the rotating connection of the first feed plate (41) and the second feed plate (42) to the lower end of the weighing box (4). There are two transmission belts (519), and each first pulley (517) and second pulley (518) is fitted with a transmission belt (519). The electric push rod (511) and the limiting cylinder (513) are symmetrically arranged on both sides of the weighing box (4). The lifting rod (514) passes vertically through the top of the limiting cylinder (513) and slides up and down with it. The top of the lifting rod (514) is flush with the top of the output end of the electric push rod (511). There are two toothed plates (512). The two toothed plates (512) are symmetrically arranged on both sides of the weighing box. The tops of the two toothed plates (512) are fixedly connected to the output end of the electric push rod (511) and the top of the lifting rod (514), respectively. Each toothed plate (512) has several teeth on the side of its lower end near the first gear (515). When the toothed plate (512) descends, the teeth on the toothed plate (512) mesh with the first gear (515).

3. The freeze-resistant recycled concrete production system according to claim 2, characterized in that: The cleaning assembly (52) includes a cleaning scraper (521) and a connecting rod (522). The cleaning scraper (521) is square in shape and has a hollow center. The cleaning scraper (521) is located directly above the weighing box (4), and the top two sides of the cleaning scraper (521) are fixedly connected to the bottom of one side of two toothed plates (512). When the cleaning scraper (521) is inside the weighing box (4), The outer wall of the cleaning scraper (521) is fitted to the inside of the weighing box (4). The connecting rod (522) is set vertically. The bottom of the connecting rod (522) is fixedly connected to the inner side of the cleaning scraper (521). The top of the connecting rod (522) is fixedly connected to the bottom center of the unblocking discharge rod (6). The diameter of the unblocking discharge rod (6) is the same as the diameter of the discharge port (3), and the diameter of the connecting rod (522) is smaller than the diameter of the discharge port (3).

4. The freeze-resistant recycled concrete production system according to claim 1, characterized in that: The first feeding plate (41) and the second feeding plate (42) are provided with magnetic adsorption components that attract each other magnetically.

5. The freeze-resistant recycled concrete production system according to claim 3, characterized in that: The connecting rod (522) has several first protrusions (7) on its outer side. The first unloading pipe (31) and the second unloading pipe (32) have second protrusions (8) at positions corresponding to the first protrusions (7) on their inner sides. The bottom of the storage barrel (1) has mounting brackets (9) on both sides. The side ends of the first unloading pipe (31) and the second unloading pipe (32) pass through the two mounting brackets (9) respectively and slide with them. Each mounting bracket (9) has a spring (10) inside, and the two ends of the spring (10) are fixedly connected to the inner side of the mounting bracket (9) and the side end of the first unloading pipe (31) respectively.

6. The freeze-resistant recycled concrete production system according to claim 1, characterized in that: The storage hopper (1) is equipped with an accelerating discharge cylinder (11), which is vertically installed inside the storage hopper (1). The top of the accelerating discharge cylinder (11) passes through the top of the storage hopper (1). One side of the accelerating discharge cylinder (11) is connected to an air outlet (12) which faces downward. The top of the unblocking discharge rod (6) is located inside the accelerating discharge cylinder (11), and the unblocking discharge rod (6) slides up and down with the accelerating discharge cylinder (11).

7. The freeze-resistant recycled concrete production system according to claim 6, characterized in that: One-way valves (13) are provided at the top of the accelerating discharge cylinder (11) and at the air outlet (12).

8. The production method of the antifreeze recycled concrete production system according to claim 1, comprising the following steps: S1: First, inject the raw materials required for producing recycled concrete into the storage tank (1) through the injection valve (2). At this time, the unblocking rod is located at the lower part of the storage tank (1), and the end of the unblocking discharge rod (6) is blocked to prevent the raw materials inside the storage tank (1) from leaking out. S2: By controlling the operation of the linkage cleaning and material transfer device (5), the unblocking and feeding rod (6) is driven to move upward inside the storage bucket (1) to expose the discharge port (3). At this time, the first feeding plate (41) and the second feeding plate (42) at the bottom of the weighing box (4) are in a state of mutual docking, and the bottom of the weighing box (4) is closed. The raw materials inside the storage bucket (1) fall into the weighing box (4) through the discharge port (3) for weighing. S3: The weighing module (43) identifies the weight of the raw material falling into the weighing box (4). When the weight of the raw material in the weighing box (4) reaches the specified requirement, the linkage cleaning and transfer device (5) is controlled to work, driving the unblocking discharge rod (6) to descend in the storage bucket (1). During the descent, the discharge port (3) at the bottom of the storage bucket (1) is blocked, and the unblocking discharge rod (6) continues to descend. The linkage cleaning and transfer device (5) descends synchronously, and the first discharge plate (41) and the second discharge plate (42) at the bottom of the linkage weighing box (4) are connected. Simultaneously rotate 90 degrees away from the opposite side to a vertical state, exposing the opening at the bottom of the weighing box (4), transferring the raw material inside the weighing box (4) to the outside of the weighing box (4), and the linkage cleaning and transfer device (5) descends in a straight line along its inner wall inside the weighing box (4) until it moves to the lower end of the first feeding plate (41) and the second feeding plate (42), thereby completing the transfer of raw material while scraping off the raw material adhering to the inner wall of the weighing box (4), the first feeding plate (41) and the second feeding plate (42); S4: After the cleaning and material transfer operations are completed, control the unblocking discharge rod (6) to rise and reset, so that the discharge port (3) and the opening at the bottom of the closed weighing box (4) are exposed again, so as to facilitate the subsequent raw material weighing operation. During the rising of the unblocking discharge rod (6), the raw material blocked at the discharge port (3) can be unblocked.

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