Filtering structure for recycling fine sand processed by granite macadam wet method

Abstract

The utility model provides a filtering structure for granite gravel wet processing fine sand recycling, and relates to the technical field of sand making and washing, the filtering structure comprises a wheel frame, a plurality of sand washing hoppers, a flushing structure, a machine shell, a main shaft and a driving structure, the flushing structure comprises a flushing pipe, and a plurality of flushing heads are machined on the surface of one side of the flushing pipe; two vertical frames are connected to the top of one side of the machine shell in an assembled mode, the driving structure comprises a rocker arm, a driving arm, a connecting base and a piston rod, a water passing tank is connected to one corner of the top of the machine shell in an assembled mode, a piston pipe is machined in the water passing tank, pipe heads are machined on the outer walls of the bottoms of the two sides of the water passing tank, and one-way valves are connected to the interiors of the pipe heads in an assembled mode; according to the technical scheme, the sand washing hopper carries washed sand to rotate around the main shaft, the sand is lifted from the bottom to the top and then poured down towards one side of the machine shell, at the moment, the outer surface of the sand washing hopper is washed through water sprayed out of the multiple washing heads on the washing pipe, and a filter screen on the sand washing hopper can be prevented from being blocked.

Description

Technical Field

[0001] This utility model relates to the field of sand making and washing technology, specifically a filter structure for fine sand recovery in wet processing of granite crushed stone. Background Technology

[0002] Wet sand making involves washing with a sand washing machine, using hydraulic methods to remove dust, and rinsing with water to remove a large amount of mud and dust from the sand particles, resulting in manufactured sand with a low dust content. It is generally used in areas with abundant water resources. The main processes include coarse crushing, medium crushing, sand making, and screening.

[0003] Sand washing refers to the process of producing construction sand from sea sand, mountain sand, silt, construction waste, etc., through washing, soaking, filtering, and desalination. This process involves putting raw materials into sand washing equipment and removing impurities through processes such as washing and screening to obtain sand that meets the requirements.

[0004] The wet sand washing process adopts a planar layout. The screened sand flows into the sand washing machine for washing. The washed fine powder and mud enter the fine sand recovery and dewatering integrated system for fine sand recovery. The separated mud and stone powder enter the high-efficiency thickener for concentration and dewatering. The concentrated and precipitated mud powder is then pressed into mud cakes by the filter press. The overflow of the thickener and the filter water are recycled. The recovered fine sand and the screened coarse sand are combined and evenly piled for dewatering.

[0005] Patent document CN213315554U describes a drive structure for a wheel-type sand washing machine. This structure drives a roller shaft to rotate, which in turn drives a washing roller. The washing roller, in turn, drives multiple scraping blades to rotate, cleaning and scraping the sand and gravel before guiding it onto a feeding plate. An arc-shaped filter screen is installed to filter the sand and gravel, retaining better quality sand and gravel, resulting in more uniform sand. Simultaneously, the roller shaft rotation drives a sector gear to rotate. This sector gear alternately meshes with two racks, causing a rectangular frame to move downwards. This allows the rectangular frame to reciprocate vertically, and the rectangular frame, via a square rod, drives a cylindrical cylinder to reciprocate vertically. The cylinder slides vertically within the spiral grooves on the spiral rod via multiple ball bearings, causing the spiral rod to rotate reciprocally, similar to the reverse use of a screw and nut. The ball bearings reduce friction. Simultaneously, the spiral rod's reciprocating rotation drives the gear shaft to rotate reciprocally via the first and second bevel gears. The gear shaft, in turn, drives the gears to rotate reciprocally. These gears, in turn, cause the arc-shaped rack to oscillate along the arc-shaped support rod. The arc-shaped rack, in turn, causes the arc-shaped filter screen to oscillate reciprocally, thus improving the filtration effect. It features a simple structure, ease of use, improved sand washing efficiency, and the ability to filter sand and gravel while ensuring the uniformity of the sand.

[0006] However, in the process of implementing the above technical solution, the following technical problems were found:

[0007] Like conventional wheel sand washing machines, this bucket wheel sand washing machine needs to wash out the mud from the sand during the sand washing process to maintain the purity of the sand and gravel. However, in actual use, the mud washed out of the sand will dry and stick to the filter screen. When the sand is continuously washed, it will affect the mud in the sand from passing through the filter screen, eventually causing the filter screen to become clogged, which greatly reduces the sand washing efficiency. Utility Model Content

[0008] To overcome the shortcomings of existing wheel-type sand washing machines, where the slurry washed from the sand dries and adheres to the filter screen during actual use, hindering the slurry from passing through the filter screen during continuous sand washing and eventually causing filter screen blockage, thus greatly reducing sand washing efficiency, this application provides a filter structure for fine sand recovery in wet processing of granite crushed stone. By rotating the sand washing bucket around the main shaft, the sand is lifted from the bottom to the top and then falls to one side of the machine casing. At this time, water sprayed from multiple flushing heads on the flushing pipe washes the outer surface of the sand washing bucket, allowing the slurry to enter the inner side of the sand washing bucket and fall to the bottom, which helps to prevent the filter screen on the sand washing bucket from becoming clogged.

[0009] The technical solution adopted by the embodiments of this application to solve its technical problem is:

[0010] A filter structure for fine sand recovery in wet processing of granite crushed stone includes a wheel frame, a sand washing bucket, and a flushing structure. Multiple sand washing buckets are provided and are respectively assembled around the wheel frame.

[0011] The flushing structure is mounted on one side of the wheel frame;

[0012] The wheel frame has a housing at its bottom, a main shaft is assembled and fixed inside the wheel frame, and a drive structure is provided at one end of the main shaft;

[0013] The rinsing structure includes a rinsing pipe, and multiple rinsing heads are machined on one side of the rinsing pipe. Two uprights are assembled and connected to the top of one side of the housing. The rinsing pipe is assembled and fixed to one end of the two uprights. The main shaft, which is controlled to rotate by a motor, controls the multiple rinsing heads on one side of the rinsing pipe to spray water onto the outer wall of the sand washing hopper through a drive structure.

[0014] In one possible implementation, the drive structure includes a rocker arm, one end of which is rotatably connected to a drive arm, and one end of the drive arm is hingedly connected to a connecting seat. A piston rod is machined on one side of the connecting seat. One end of the rocker arm is pin-fixed to the outside of one end of the main shaft. The main shaft is driven by a motor, which drives the rocker arm to rotate so that one end of the drive arm pushes and pulls the drive arm from one end to the other.

[0015] In one possible implementation, a water tank is assembled and connected to a corner at the top of the housing. A piston tube is machined inside the water tank. Pipe heads are machined on the bottom outer walls of both sides of the water tank. One-way valves are assembled and connected inside the pipe heads. The medium flows in the same direction in the two one-way valves. The piston rod is slidably connected inside the piston tube.

[0016] In one possible implementation, one end of the one-way valve is fitted with a water suction pipe, one end of which extends into the interior of the cleaning water. The piston rod slides inside the piston tube and, when it retracts from the interior of the water tank to the outside, creates a negative pressure inside the water tank, opening the passage inside the one-way valve and supporting the cleaning water to enter the interior of the water tank through the water suction pipe.

[0017] In one possible implementation, one end of the one-way valve is fitted with a water supply pipe, the other end of which is connected to the interior of the flushing pipe. The piston rod slides inside the piston pipe and, when it extends from the outside to the inside of the water tank, pressurizes the interior of the water tank, opening the passage inside the one-way valve, allowing the cleaning water inside the water tank to be input from the water supply pipe into the interior of the flushing pipe.

[0018] In one possible implementation, one end of each of the two check valves is connected to the bottom of the internal cavity of the water tank, and one end of the piston tube is located at the top of the internal cavity of the water tank.

[0019] In one possible implementation, the wheel frame drives multiple sand washing hoppers to rotate inside the machine housing, and when the opening of the sand washing hoppers is vertically downward, water is sprayed from the flushing heads on one side of multiple flushing pipes to flush the filter screen inside the sand washing hoppers.

[0020] The beneficial effects of this application are as follows:

[0021] First, in this solution, the sand washing bucket carries the washed sand and rotates around the main shaft, lifting it from the bottom to the top and then falling to one side of the machine casing. At this time, the water sprayed from multiple flushing heads on the flushing pipe washes the outer surface of the sand washing bucket, which can wash the mud into the inner side of the sand washing bucket and fall to the bottom, which helps to prevent the filter screen on the sand washing bucket from clogging.

[0022] Secondly, in this solution, the main shaft controlled by the motor drives the rocker arm to control the drive arm to push and pull the piston rod inside the piston tube. It switches between negative pressure and pressurization with the help of the internal pressure of the water tank. Based on two one-way valves with the same flow direction of the two media, water can be pumped into the water tank through the pumping pipe when the internal pressure of the water tank is negative, and water can be sent from the water tank to the flushing pipe through the water supply pipe when the internal pressure of the water tank is increased. This supports the water to be sprayed out from the inside of multiple flushing heads to flush the filter screen inside the sand washing bucket. It is convenient to directly control the pumping and flushing work by using the main shaft controlled by the motor during the sand washing process, which helps to save energy. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the flushing structure of this utility model;

[0025] Figure 3 This is one of the cross-sectional views of the water tank of this utility model;

[0026] Figure 4 This is the second sectional view of the water tank of this utility model.

[0027] Reference numerals in the attached drawings: 1. Wheel frame; 2. Sand washing bucket; 3. Rocker arm; 4. Machine housing; 5. Main shaft; 6. Drive arm; 7. Connecting seat; 8. Water suction pipe; 9. Piston rod; 10. Water tank; 11. Stand; 12. Flushing pipe; 13. Flushing head; 14. Water supply pipe; 15. Pipe head; 16. Piston pipe; 17. One-way valve. Detailed Implementation

[0028] The technical solution in this application embodiment is to solve the problems mentioned in the background art, and the overall idea is as follows:

[0029] Example 1:

[0030] This embodiment describes a specific structure for a filter structure used in the wet processing of granite crushed stone for fine sand recovery. See the attached document for details. Figures 1-2 As shown, it includes a wheel frame 1, multiple sand washing buckets 2 respectively assembled around the wheel frame 1, and a flushing structure mounted on one side of the wheel frame 1. The bottom of the wheel frame 1 is provided with a housing 4, and a main shaft 5 is assembled and fixed inside the wheel frame 1. A drive structure is provided at one end of the main shaft 5.

[0031] like Figure 1 and Figure 2 As shown, the rinsing structure includes a rinsing pipe 12, and multiple rinsing heads 13 are machined on one side of the rinsing pipe 12. Two uprights 11 are assembled and connected to the top of one side of the housing 4. By assembling and fixing the rinsing pipe 12 to one end of the two uprights 11, when the main shaft 5, which is controlled by the motor to rotate, controls the multiple rinsing heads 13 on one side of the rinsing pipe 12 to spray water onto the outer wall of the sand washing hopper 2 through the drive structure, the filter screen on the sand washing hopper 2 can be rinsed with clean water to avoid the continuous adhesion of mud on the filter screen, which would affect the sand washing effect.

[0032] At the same time, by causing the wheel frame 1 to drive multiple sand washing buckets 2 to rotate inside the machine casing 4, and when the opening direction of the sand washing bucket 2 is vertically downward, the flushing head 13 on one side of the multiple flushing pipes 12 sprays water to flush the filter screen inside the sand washing bucket 2, so that the washed mud can be washed away.

[0033] By adopting the above technical solution:

[0034] The above design involves setting a flushing pipe 12 with multiple flushing heads 13 at the bottom of one side of the housing 4. When multiple sand washing hoppers 2 assembled to the outer wall of the wheel frame 1 perform sand washing work based on traditional technology, the sand washing hopper 2 carries the washed sand and rotates around the main shaft 5. After being lifted from the bottom to the top, it falls to one side of the housing 4. At this time, the water sprayed by the multiple flushing heads 13 washes the outer surface of the sand washing hopper 2, which can wash the mud into the inner side of the sand washing hopper 2 and fall to the bottom, which helps to prevent the filter screen on the sand washing hopper 2 from clogging and reducing the efficiency of subsequent sand washing.

[0035] Example 2:

[0036] Based on Example 1, this example describes the specific structure of the driving structure, such as... Figures 1 to 4 As shown, the drive structure includes a rocker arm 3, one end of which is rotatably connected to a drive arm 6, and one end of the drive arm 6 is hinged to a connecting seat 7. A piston rod 9 is machined on one side of the connecting seat 7. A water tank 10 is assembled and connected at a corner of the top of the housing 4. A piston tube 16 is machined inside the water tank 10. Pipe heads 15 are machined on the bottom outer walls of both sides of the water tank 10. A one-way valve 17 is assembled and connected inside the pipe head 15.

[0037] In this way, by pinning one end of the rocker arm 3 to the outside of one end of the main shaft 5, when the main shaft 5 is driven by the motor, driving the rocker arm 3 to rotate so that one end of the drive arm 6 moves from one end to the other, the piston rod 9 can be controlled to slide inside the piston tube 16 in order to control the pressure state inside the water tank 10.

[0038] Secondly, by making the direction of medium flow in the two check valves 17 the same, when a water pumping pipe 8 is installed at one end of a check valve 17 and one end of the water pumping pipe 8 extends into the interior of the cleaning water, the piston rod 9 can be supported to slide inside the piston tube 16 and exit from the interior of the water tank 10 to the outside, creating a negative pressure inside the water tank 10, thereby opening the passage inside the check valve 17, allowing the cleaning water to enter the interior of the water tank 10 through the water pumping pipe 8, thus completing the water pumping operation.

[0039] Meanwhile, by assembling a water supply pipe 14 at one end of a one-way valve 17, one end of the water supply pipe 14 is connected to the inside of the flushing pipe 12. When the piston rod 9 slides inside the piston tube 16 and extends from the outside to the inside of the water tank 10, the inside of the water tank 10 can be pressurized, opening the passage inside the one-way valve 17, allowing the cleaning water inside the water tank 10 to be input from the water supply pipe 14 to the inside of the flushing pipe 12, and pressurizing the inside of the flushing head 13, causing the cleaning water to be sprayed out from the inside of multiple flushing heads 13, thus completing the pressurized water spraying operation.

[0040] Furthermore, by connecting one end of each of the two one-way valves 17 to the bottom of the internal cavity of the water tank 10, and one end of the piston tube 16 to the top of the internal cavity of the water tank 10, when the water tank 10 is under negative pressure (similar to pressurization, mainly compared with standard atmospheric pressure), the cleaning water is forced into the water tank 10 from the pumping pipe 8 and one of the one-way valves 17, and is collected at the bottom of the water tank 10. As the water volume increases, the liquid level rises. When the water tank 10 is pressurized, the cleaning water is quickly forced out from the other one-way valve 17, and the action is rapid.

[0041] By adopting the above technical solution:

[0042] The above design fixes the rocker arm 3 to the main shaft 5, which is controlled by a motor, so that the rocker arm 3 rotates with the main shaft 5. The receiving group drive arm 6 rotates around the connection point between itself and the rocker arm 3 and the connecting seat 7, which can push and pull the piston rod 9 to extend or retract inside the piston tube 16, thereby controlling the pressure inside the water tank 10. When one end of the water pipe 8 extends into the cleaning water, the water tank 10 is in a negative pressure state when the piston rod 9 retracts from the piston tube 16, so that water enters the water tank 10 through one check valve 17 (the passage inside the other check valve 17 is blocked).

[0043] When the piston rod 9 extends into the piston tube 16 and compresses the air inside the water tank 10, water can enter the water supply pipe 14 through another one-way valve 17 (the one-way valve 17 used to control the water pumping operation is in a blocked state), and finally be delivered to the flushing pipe 12 to support the water to spray out from the inside of the flushing head 13.

[0044] It should be noted that by controlling the drive arm 6 to push and pull the piston rod 9 inside the piston tube 16 through the rocker arm 3 driven by the main shaft 5, water pumping and water delivery can be carried out simultaneously, and multiple flushing heads 13 can intermittently flush the filter screen on the sand washing bucket 2. The flushing frequency of the multiple flushing heads 13 can also be achieved by setting gears of different diameters between the main shaft 5 and the rocker arm 3 (the two gears only need to be connected between one end of the main shaft 5 and one end of the rocker arm 3, and provide an independent rotation support point for the rocker arm 3 so that the two gears can mesh).

[0045] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A filter structure for recovering fine sand from a granite rock wet processing, characterized by, Include: Wheel frame (1); Sand washing bucket (2) is provided with a plurality of, and respectively assembled to the four around wheel frame (1); The flushing structure is erected on one side of the wheel frame (1); Wherein, the bottom of the wheel frame (1) is provided with a machine shell (4), the inside of the wheel frame (1) is assembled and fixed with a main shaft (5), one end of the main shaft (5) is provided with a driving structure; The flushing structure includes a flushing pipe (12), a plurality of flushing heads (13) are machined on one side of the flushing pipe (12), two stands (11) are assembled and connected on one side of the top of the machine shell (4), the flushing pipe (12) is assembled and fixed to one end of the two stands (11), the main shaft (5) rotating under the control of the motor controls the plurality of flushing heads (13) on one side of the flushing pipe (12) to spray water to the outer wall of the sand washing bucket (2).

2. A filter structure for the wet processing of fine sand from granite rock, according to claim 1, characterized in that: The driving structure includes a rocker arm (3), one end of the rocker arm (3) is rotatably connected with a driving arm (6), one end of the driving arm (6) is hingedly connected with a connecting seat (7), one side of the connecting seat (7) is machined with a piston rod (9); Wherein, one end of the rocker arm (3) is fixedly connected with the outside of one end of the main shaft (5), the main shaft (5) is driven by the motor, and the rocker arm (3) is rotated to drive the driving arm (6) to move from one end to the other end.

3. A filter structure for the wet processing of fine sand from granite rock, according to claim 2, characterized in that: One corner of the top of the machine shell (4) is assembled and connected with a water passing box (10), the inside of the water passing box (10) is machined with a piston pipe (16), the bottom outer wall of both sides of the water passing box (10) is machined with a pipe head (15), the inside of the pipe head (15) is assembled and connected with a one-way valve (17); Wherein, the directions of the media flow in the two one-way valves (17) are the same, the piston rod (9) is slidably connected in the inside of the piston pipe (16).

4. A filter structure for the wet processing of fine sand from granite rock, according to claim 3, characterized in that: One end of one of the one-way valves (17) is assembled and connected with a water suction pipe (8), one end of the water suction pipe (8) extends into the inside of the cleaning water, the piston rod (9) slides in the inside of the piston pipe (16), and when it withdraws from the inside to the outside of the water passing box (10), the inside of the water passing box (10) is negative pressure, the channel in the inside of the one-way valve (17) is opened, and the cleaning water is supported to enter the inside of the water passing box (10) through the water suction pipe (8).

5. A filter structure for the wet processing of fine sand from granite rock, according to claim 3, characterized in that: One end of one of the one-way valves (17) is assembled and connected with a water supply pipe (14), one end of the water supply pipe (14) is connected to the inside of the flushing pipe (12), the piston rod (9) slides in the inside of the piston pipe (16), and when it extends from the outside to the inside of the water passing box (10), the inside of the water passing box (10) is pressurized, the channel in the inside of the one-way valve (17) is opened, and the cleaning water in the inside of the water passing box (10) is input from the water supply pipe (14) to the inside of the flushing pipe (12).

6. A filter structure for the wet processing of fine sand from granite rock, according to claim 3, characterized in that: One end of the two one-way valves (17) is communicated with the bottom of the inside cavity of the water passing box (10), one end of the piston pipe (16) is located at the top of the inside cavity of the water passing box (10).

7. A filter structure for the wet processing of fine sand from granite rock, according to claim 1, characterized in that: The wheel frame (1) drives a plurality of sand washing buckets (2) to rotate inside the casing (4), and when the opening direction of the sand washing bucket (2) is vertically downward, the water spray head (13) on one side of the plurality of flushing pipes (12) sprays water to flush the filter screen inside the sand washing bucket (2).

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