A sand and gravel separator

Abstract

This utility model discloses a sand and gravel separator, specifically relating to the field of concrete production technology. It includes a collection box with an auger conveyor installed on one side. The bottom of the auger conveyor is connected to a discharge port. A screening machine is installed at the top of the collection box, with a feed port connected to its top. A cleaning component is installed inside the screening machine, and a feeding mechanism is installed inside the discharge port. The cleaning component includes a baffle plate fixedly connected to the inside of the screening machine. A first filter screen and a second filter screen are fixedly connected inside the screening machine by screws, with the second filter screen installed on one side of the first filter screen. By setting up the cleaning component and the feeding mechanism, this utility model allows for dual screening of sand and gravel by the first and second filter screens, effectively cleaning their surfaces, reducing clogging and improving screening efficiency, maintaining good separation performance, and minimizing sand and gravel accumulation and compaction inside the discharge port, ensuring smooth discharge of sand and gravel.

Description

Technical Field

[0001] This utility model relates to the field of concrete production technology, and more specifically, to a sand and gravel separator. Background Technology

[0002] Sand and gravel separators are the core equipment of concrete recycling systems and are playing an increasingly important role in mixing plants. Sand and gravel separators can also be called concrete sand and gravel separators, etc. They can clean and separate wastewater used for washing tank trucks and sand and gravel in concrete, thereby achieving recycling. They are green mechanical equipment that meets modern environmental protection standards, which helps to save resources and protect the environment, and can also help enterprises achieve economic benefits.

[0003] When screening sand and gravel, some sand mixes with water and adheres to the stone, and is discharged with the stone, resulting in incomplete separation of sand and stone and reducing the sand recovery rate.

[0004] A search revealed that Chinese patent CN219880485U discloses a sand and gravel separator. By setting up impact blocks, the stones collide with the impact blocks to shake off the sand adhering to the stones. The impact blocks are elastic, which can reduce the chance of the impact blocks crushing the stones, so as to facilitate the separation of sand and stones and improve the sand recovery rate.

[0005] In actual use, the above-mentioned sand and gravel separator uses a single filter screen for separation. This can lead to the filter screen gaps being blocked by large particles or sticky substances during sand and gravel separation, resulting in reduced screening efficiency. Consequently, frequent cleaning and replacement are required, increasing maintenance costs. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a sand and gravel separator to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A sand and gravel separator includes a collection box, an auger conveyor installed on one side of the collection box, a discharge port connected to the bottom end of the auger conveyor, a screening machine installed on the top of the collection box, a feed port connected to the top of the screening machine, a cleaning component installed inside the screening machine, and a feeding mechanism installed inside the discharge port.

[0009] The cleaning assembly includes a baffle plate, which is fixedly connected to the interior of the screening machine. A first filter and a second filter are fixedly connected inside the screening machine via screws. The second filter is installed on one side of the first filter. A first stepper motor is installed at the front of the screening machine. A lead screw is fixedly connected to the output end of the first stepper motor, and the lead screw is rotatably connected to the interior of the screening machine. A threaded block is threaded to the outer side of the lead screw. A connecting support rod is fixedly connected to one side of the threaded block. A second stepper motor is installed inside the connecting support rod. An air jet pipe is fixedly connected to the output end of the second stepper motor. Multiple air jet heads are connected to the outer side of the air jet pipe. Two sweeping rods are fixedly connected to the bottom end of the second stepper motor. A centrifugal fan is installed at the top of the screening machine. An air delivery hose is fixedly connected to the output end of the centrifugal fan, and one end of the air delivery hose passes through the screening machine and connects to the air jet pipe.

[0010] By adopting the above technical solution, the first and second filter screens can be cleaned, reducing the clogging caused by impurities, thereby maintaining good screening efficiency.

[0011] As a further description of the above technical solution: the feeding mechanism includes a servo motor, the servo motor is fixedly connected to one side of the discharge port, a gear is fixedly connected to the output end of the servo motor, a gear plate meshes with one side of the gear, the gear plate is rotatably connected to the inside of the discharge port, a spiral blade is fixedly connected to the inner side of the gear plate, and the spiral blade is rotatably connected to the inner side of the discharge port.

[0012] By adopting the above technical solution, the fluidity of sand and gravel can be increased inside the discharge port, keeping the sand and gravel in a loose state and facilitating discharge.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] 1. By setting up a cleaning component, compared with the existing technology, the first and second filter screens can be used to screen sand and gravel in a dual manner. The reciprocating motion of the threaded block can drive two sweeping rods to sweep and clean the gaps of the second filter screen, which can effectively remove impurities in the gaps and reduce the clogging caused by impurities, thus reducing screening efficiency. At the same time, the second stepper motor can drive the jet pipe to swing back and forth to blow the surface of the first filter screen, which can blow away fine particles and adhering substances on the surface and gaps of the first filter screen, so that the first filter screen can maintain a good separation effect.

[0015] 2. By setting up a feeding mechanism, compared with the existing technology, the spiral action of the rotating spiral blades can improve the fluidity of sand and gravel inside the discharge port, so that the sand and gravel can flow downward quickly, thereby reducing the accumulation and compaction of sand and gravel inside the discharge port and ensuring that the sand and gravel can be discharged smoothly. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the top structure of the screening machine of this utility model.

[0018] Figure 3 This is a schematic diagram of the internal structure of the screening machine of this utility model.

[0019] Figure 4 This is a partial structural diagram of the threaded block connection of this utility model.

[0020] Figure 5 This is a partial structural diagram of the connecting rod connection point of this utility model.

[0021] Figure 6 This is a schematic diagram of the internal structure of the discharge port of this utility model.

[0022] The attached diagram is labeled as follows: 1. Collection box; 2. Screw conveyor; 3. Discharge port; 4. Screening machine; 5. Feed port; 6. Baffle; 7. First stepper motor; 8. Lead screw; 9. Threaded block; 10. Connecting support rod; 11. Second stepper motor; 12. Jet pipe; 13. Jet head; 14. Sweeping rod; 15. Centrifugal fan; 16. Air delivery hose; 17. First filter screen; 18. Second filter screen; 19. Servo motor; 20. Gear; 21. Gear disc; 22. Spiral blade. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] The embodiments disclosed in this application are as follows: Figure 1-6 The sand and gravel separator shown includes a collection box 1, an auger conveyor 2 installed on one side of the collection box 1, a discharge port 3 connected to the bottom of the auger conveyor 2, a screening machine 4 installed at the top of the collection box 1, a feed inlet 5 connected to the top of the screening machine 4, a cleaning component installed inside the screening machine 4, and a feeding mechanism installed inside the discharge port 3.

[0025] The cleaning assembly includes a baffle 6, which is fixedly connected to the interior of the screening machine 4. A first filter screen 17 and a second filter screen 18 are fixedly connected to the interior of the screening machine 4 via screws. The second filter screen 18 is installed on one side of the first filter screen 17. A first stepper motor 7 is installed on the front side of the screening machine 4. A lead screw 8 is fixedly connected to the output end of the first stepper motor 7 and is rotatably connected to the interior of the screening machine 4. A threaded block 9 is threadedly connected to the outer side of the lead screw 8. A connecting support rod 10 is fixedly connected to one side of the threaded block 9. A second stepper motor 11 is installed inside the connecting support rod 10. An air jet pipe 12 is fixedly connected to the output end of the second stepper motor 11. Multiple air jet heads 13 are connected to the outer side of the air jet pipe 12. Two sweeping rods are fixedly connected to the bottom end of the second stepper motor 11. 14. A centrifugal fan 15 is installed at the top of the screening machine 4. An air supply hose 16 is fixedly connected to the output end of the centrifugal fan 15. One end of the air supply hose 16 passes through the screening machine 4 and is connected to the jet pipe 12. The baffle 6 can block one side of the screw 8, thereby reducing the impact of splashing to the outside of the screw 8. The screw 8 can drive the threaded block 9 to move back and forth through the thread, so that the connecting support rod 10 can drive the two sweeping rods 14 to sweep the gaps between the second filter screens 18, which can effectively remove impurities in the gaps. The second stepper motor 11 can drive the jet pipe 12 to drive multiple jet heads 13 to swing back and forth on the surface of the first filter screen 17 to blow away the fine particles and adhering substances on the surface and in the gaps of the first filter screen 17, so that the first filter screen 17 maintains a good separation effect.

[0026] Reference Figure 6 As shown, the feeding mechanism includes a servo motor 19, which is fixedly connected to one side of the discharge port 3. A gear 20 is fixedly connected to the output end of the servo motor 19. A gear disk 21 meshes with one side of the gear 20. The gear disk 21 is rotatably connected to the inside of the discharge port 3. A spiral blade 22 is fixedly connected to the inside of the gear disk 21. The spiral blade 22 is rotatably connected to the inside of the discharge port 3. By using the gear 20 meshing with the gear disk 21, the spiral blade 22 is driven to rotate inside the discharge port 3. The spiral action of the rotating spiral blade 22 can improve the fluidity of the sand and gravel inside the discharge port 3, reduce the accumulation and compaction of sand and gravel inside the discharge port 3, and ensure that the sand and gravel can be discharged smoothly.

[0027] Working principle of this utility model: This utility model designs a sand and gravel separator, the specific structure of which is shown in the attached instruction manual. Figure 1-6As shown, in this technical solution, through the cooperation of various structures, when it is necessary to separate sand and gravel, the sand and gravel can be conveyed into the screening machine 4 through the feed inlet 5. Then, the screening machine 4 is started, and the vibration generated by the screening machine 4 cooperates with the first filter screen 17 and the second filter screen 18. The second filter screen 18 can quickly screen out the sand and gravel with larger particle size or clumps for preliminary screening. 17 can perform secondary screening for the sand and gravel with larger particle size. After screening by the first filter screen 17 and the second filter screen 18, the sand and gravel can be separated. At the same time as separation, the first stepper motor 7 is started, and the first stepper motor 7 drives the lead screw 8 to rotate, so that the lead screw 8 can drive the threaded block 9 to rotate back and forth through the thread. The threaded block 9 can drive the connecting support rod 10 to move back and forth, so that the connecting support rod 10 can drive the two sweeping rods 14 to sweep the gaps between the second filter screens 18, reduce the blockage of the gaps between the second filter screens 18, and start the second... Stepper motor 11 and centrifugal fan 15 generate airflow through air delivery hose 16 to jet pipe 12, so that multiple sweeping rods 14 can spray air onto the first filter screen 17. The second stepper motor 11 drives the jet pipe 12 to swing back and forth, so that multiple first filter screens 17 can blow away the fine mud and sand particles on their surface, making them easier to screen. The screened sand and gravel fall into the collection box 1. Then, the auger conveyor 2 is started. Under the action of the auger conveyor 2, the screened sand and gravel can be transported to the appropriate area through the discharge port 3. At the same time as the conveying, servo motor 19 is started, which drives gear 20 to rotate. The gear 20 can mesh and drive the gear disk 21 to rotate, so that the gear disk 21 can drive the spiral blades 22 to rotate inside the discharge port 3. The spiral action of the spiral blades 22 can guide the sand and gravel to flow downward, reducing the blockage of sand and gravel inside the discharge port 3.

[0028] In the accompanying drawings of the embodiments disclosed in this utility model, only the structures involved in the embodiments of this utility model are shown. Other structures can be referred to with ordinary design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0029] All contents not described in detail in the specification are existing technologies known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used. Electrical control components not mentioned in this technical solution are existing technologies and are therefore not shown in the figures and will not be described here.

[0030] In conclusion, the above are merely preferred embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A sand and gravel separator, comprising a collection bin (1), characterized in that: A screw conveyor (2) is installed on one side of the collection box (1). The bottom of the screw conveyor (2) is connected to the discharge port (3). A screening machine (4) is installed on the top of the collection box (1). The top of the screening machine (4) is connected to the inlet (5). A cleaning component is installed inside the screening machine (4). A feeding mechanism is installed inside the discharge port (3). The cleaning assembly includes a baffle (6), which is fixedly connected to the inside of the screening machine (4). The screening machine (4) has a first filter screen (17) and a second filter screen (18) fixedly connected inside by screws. The second filter screen (18) is installed on one side of the first filter screen (17). A first stepper motor (7) is installed on the front side of the screening machine (4). A lead screw (8) is fixedly connected to the output end of the first stepper motor (7). The lead screw (8) is rotatably connected to the inside of the screening machine (4).

2. The sand and gravel separator according to claim 1, characterized in that: The lead screw (8) is threaded to the outside of a threaded block (9), and a connecting support rod (10) is fixedly connected to one side of the threaded block (9). A second stepper motor (11) is installed inside the connecting support rod (10).

3. The sand and gravel separator according to claim 2, characterized in that: The output end of the second stepper motor (11) is fixedly connected to a jet pipe (12), and multiple jet heads (13) are connected to the outside of the jet pipe (12). Two sweeping rods (14) are fixedly connected to the bottom end of the second stepper motor (11).

4. The sand and gravel separator according to claim 1, characterized in that: The top of the screening machine (4) is equipped with a centrifugal fan (15), and the output end of the centrifugal fan (15) is fixedly connected to an air supply hose (16). One end of the air supply hose (16) passes through the screening machine (4) and is connected to the jet pipe (12).

5. The sand and gravel separator according to claim 1, characterized in that: The feeding mechanism includes a servo motor (19), which is fixedly connected to one side of the discharge port (3), and a gear (20) is fixedly connected to the output end of the servo motor (19).

6. The sand and gravel separator according to claim 5, characterized in that: The gear (20) is meshed with a toothed disc (21) on one side, and the toothed disc (21) is rotatably connected to the inside of the discharge port (3).

7. The sand and gravel separator according to claim 6, characterized in that: The inner side of the toothed disc (21) is fixedly connected with a spiral blade (22), and the spiral blade (22) is rotatably connected to the inner side of the discharge port (3).

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