A multi-chamber water-gas combined sand washing machine with self-adjusting function

Abstract

The present invention provides a multi-cavity water-gas combined sand washing machine with a self-adjusting function, which is applied to the technical field of sand washing machines. The sand washing step is added to the sand washing machine through a sand washing water tank. The poured sand and gravel are evenly distributed in the cavity tank and screened by a sand washing screen. At the same time, a crankshaft is driven to drive a screen pressing column to press the sand washing screen downward. The sand washing screen together with the sand and gravel are pressed and immersed in the sand washing water tank. The water flow generated during the pressing process washes the sand and gravel violently, breaks up the sand and gravel as a whole, and effectively removes impurities attached to the sand and gravel. The driving crankshaft synchronously drives the air bag pressing column to squeeze the pressing air bag in the pressure air chamber. The squeezed gas is discharged from the aeration pipe, and the generated bubbles further aerate and flush the sand and gravel on the sand washing screen, thereby further improving the cleaning effect of the sand and gravel.

Description

Technical Field

[0001] The present application relates to the technical field of sand washing machines, and in particular to a multi-cavity water-gas combined sand washing machine with a self-regulating function. Background Art

[0002] Sand washing machine is a kind of equipment for washing artificial sand. After being crushed, artificial sand generally contains certain impurities such as soil and dust, and needs to be washed before it can be used as a product. Sand washing machine is widely used for washing materials in sand field, mining, building materials, transportation, chemical industry, water conservancy and hydropower, concrete mixing station and other industries. It is mainly used for removing impurities from sand products. Because it uses water washing method more often, it is called sand washing machine. Among them, because it is generally for artificial sand, it is also called stone washing machine. Because of its different appearance and principle, it is also called spiral sand washing machine, drum sand washing machine, water wheel sand washing machine, vibration sand washing machine, etc.

[0003] The existing drum sand washing machine uses a drum to lift up the sand and gravel, and filters out the water in the sand and gravel, and takes away the mud with the filtered water. This sand washing method is relatively gentle. The sand and gravel are not dispersed when poured into the cleaning pool, and it is difficult to remove stubborn impurities on the sand. In addition, the muddy water filtered out from the drum will settle in the sand washing pool, and the accumulation of muddy water in the pool affects the cleaning effect of the sand and gravel.

[0004] In view of the above problems, the present technical scheme makes corresponding technical conjectures, which can add a relatively intense sand washing process before the sand and gravel are poured into the cleaning tank of the sand washing machine to disperse and impact the dumped sand and gravel, thereby improving the cleaning effect of the sand and gravel. Summary of the invention

[0005] The purpose of the present application is to improve the cleaning effect of sand and gravel, and compared with the prior art, a multi-cavity water-gas combined sand washing machine with a self-adjusting function is provided, wherein a sand washing trough is fixedly connected to the top of one end of the sand washing tank, and a plurality of cavity troughs are arranged inside the sand washing trough, a sand washing screen is fixedly connected to the top of the cavity trough, and a screen pressing column is hinged in the middle of the sand washing screen, a driving crankshaft is movably connected to the top of the sand washing trough, and the driving crankshaft is movably connected to the top of the screen pressing column; a sand feeding hopper and a pressure air chamber are respectively fixedly connected to the two sides of the top of the sand washing trough, and a pressing air bag is fixedly connected to the inside of the pressure air chamber, an air bag pressing column is movably connected to the middle of the pressing air bag, and the air bag pressing column is movably connected to the driving crankshaft, aeration pipes are fixedly connected to the two sides of the bottom end of the sand washing trough, and an air guide pipe is fixedly connected between the aeration pipe and the pressing air bag, and a one-way air valve is installed on the top of the pressing air bag and the connecting end of the air guide pipe.

[0006] The sand washing machine can add a sand washing step by using a sand washing trough. The poured sand and gravel are evenly distributed into the cavity trough and screened by using a sand washing screen. At the same time, the crankshaft is driven to drive the screen pressing column to press the sand washing screen downward. The sand washing screen together with the sand and gravel are pressed and immersed in the sand washing trough. The water flow generated during the pressing process washes the sand and gravel violently, breaks up the sand and gravel as a whole, and effectively removes impurities attached to the sand and gravel. Synchronously, the driving crankshaft also drives the air bag pressing column to squeeze the pressing air bag in the pressure air chamber. The squeezed gas is discharged from the aeration pipe, and the generated bubbles further aerate and flush the sand and gravel on the sand washing screen, thereby further improving the cleaning effect of the sand and gravel.

[0007] Furthermore, a driving motor is fixedly connected to the side of the sand washing tank, and the output end of the driving motor is fixedly connected to the rotating shaft of the sand washing drum. The driving motor drives the sand washing drum to roll to realize the sand washing operation of the sand washing machine.

[0008] Furthermore, the rotating shaft of the sand washing drum is connected to the driving crankshaft via a pulley transmission, and the outside of the driving motor is connected to a PLC controller, which utilizes belt transmission to realize the transmission of the sand washing drum and the driving crankshaft, so that the PLC controller can adjust the output power of the driving motor to achieve the self-regulating function of the sand washing machine.

[0009] Furthermore, the top of the sand washing trough is arranged in an inclined surface, and an overflow hole is opened on the outer surface of the sand washing trough. The internal disturbance of the sand washing trough is severe, and the overflow hole can discharge the excess muddy water together with the washed impurity sand and mud, so as to avoid the overflowing muddy water affecting the sand washing environment.

[0010] Furthermore, the sand washing screen is arranged in an inclined surface corresponding to the top surface of the sand washing trough, and the sand washing screen is a polyurethane screen. The inclined angle of the sand washing screen facilitates the sliding of sand and gravel into the sand washing pool. The polyurethane screen has high tensile strength and tearing strength, good wear resistance, good resilience, small compression permanent deformation and long service life.

[0011] Furthermore, a through hole is opened in the middle of the pressing airbag, and the through hole is sleeved with the airbag pressing column. A compression plate is fixedly connected to the outside of the pressing airbag, and the compression plate is hinged to the airbag pressing column. The airbag pressing column passes through the through hole to better apply force to the pressing airbag, and the compression plate improves the compression effect on the pressing airbag.

[0012] Furthermore, the length of the extrusion plate corresponds to the length of the pressing airbag, and the pressing airbag is made of elastic rubber material. The extrusion plate of corresponding length can fully squeeze the pressing airbag, thereby improving the exhaust efficiency of the pressing airbag. The pressing airbag made of elastic rubber material is easy to absorb external air when rebounding.

[0013] Optionally, a water receiving roller is fixedly mounted inside the sand washing drum, and a guide groove is fixedly connected to the surface of the water receiving roller. A mud and water return channel is fixedly connected to the rear side of the sand washing tank, and the mud and water return channel corresponds to the outer end of the guide groove. The water receiving roller blocks the mud and water filtered out by the sand washing drum from flowing back into the sand washing tank, and uses the guide groove to bring the mud and water out from the side of the water receiving roller. The mud and water return channel then collects the brought out mud and water, thereby realizing the recycling and reuse of the mud and water.

[0014] Furthermore, the rear diameter of the water receiving drum is smaller than the front diameter, and a water inlet pipe is fixedly connected to the rear top of the sand washing tank. The special shape of the water receiving drum facilitates guiding the muddy water to flow to the rear side of the sand washing drum. The water inlet pipe adds new water to the sand washing tank, effectively avoiding sand and mud accumulation.

[0015] Furthermore, a sand flushing pipe is fixedly connected to the top of the sand inlet hopper, and a water outlet head facing the sand washing screen is opened on the surface of the sand flushing pipe. One end of the sand flushing pipe is tilted upward and fixedly connected to the mud and water return channel. The sand flushing pipe is used to guide the mud and water collected in the mud and water return channel to flow toward the sand inlet hopper. The mud and water are sprayed toward the sand washing screen from the water outlet head to flush the sand and gravel on the sand washing screen. Water is added to the sand washing sink while flushing and cleaning the sand and gravel. The impact force brought by the mud and water can also accelerate the ability of sand and gravel to slide down the sand washing screen, making it easier for sand and gravel to slide into the sand washing pool.

[0016] Compared with the prior art, the advantages of this application are:

[0017] (1) This solution adds a sand washing step to the sand washing machine through a sand washing water tank. The poured sand and gravel are evenly distributed into the cavity tank and screened using a sand washing screen. At the same time, the driving crankshaft drives the screen pressing column to press the sand washing screen downward. The sand washing screen together with the sand and gravel are pressed and immersed in the sand washing water tank. The water flow generated during the pressing process vigorously washes the sand and gravel, breaking up the sand and gravel as a whole and effectively removing impurities attached to the sand and gravel. At the same time, the driving crankshaft also drives the air bag pressing column to squeeze the pressing air bag in the pressure air chamber. The squeezed gas is discharged from the aeration pipe, and the generated bubbles further aerate and flush the sand and gravel on the sand washing screen, thereby further improving the cleaning effect of the sand and gravel.

[0018] (2) A driving motor is fixedly connected to the side of the sand washing tank, and the output end of the driving motor is fixedly connected to the rotating shaft of the sand washing drum. The driving motor drives the sand washing drum to roll to realize the sand washing operation of the sand washing machine.

[0019] (3) The rotating shaft of the sand washing drum is connected to the driving crankshaft through a pulley transmission. The outside of the driving motor is connected with a PLC controller. The transmission between the sand washing drum and the driving crankshaft is realized by belt transmission, which makes it convenient for the PLC controller to adjust the output power of the driving motor, thereby achieving the self-regulating function of the sand washing machine.

[0020] (4) The top of the sand washing trough is set at an inclined surface, and an overflow hole is opened on the outer surface of the sand washing trough. The internal disturbance of the sand washing trough is severe. The overflow hole can discharge the excess muddy water together with the washed impurities and sand mud, so as to avoid the overflowing muddy water affecting the sand washing environment.

[0021] (5) The sand washing screen is set at an inclined surface corresponding to the top surface of the sand washing tank, and the sand washing screen is a polyurethane screen. The inclined angle of the sand washing screen is convenient for sand and gravel to slide into the sand washing tank. The polyurethane screen has high tensile strength and tear strength, good wear resistance, good resilience, small compression permanent deformation and long service life.

[0022] (6) A through hole is provided in the middle of the pressing airbag, and the through hole is sleeved with the airbag pressing column. A compression plate is fixedly connected to the outer side of the pressing airbag, and the compression plate is hinged to the airbag pressing column. The airbag pressing column passes through the through hole to better apply force to the pressing airbag, and the compression plate improves the compression effect on the pressing airbag.

[0023] (7) The length of the squeezing plate corresponds to the length of the pressing airbag. The pressing airbag is made of elastic rubber material. The squeezing plate of corresponding length can fully squeeze the pressing airbag, thereby improving the exhaust efficiency of the pressing airbag. The pressing airbag made of elastic rubber material is easy to absorb external air when rebounding.

[0024] (8) The sand washing drum is internally fixed with a water receiving drum, and the surface of the water receiving drum is fixedly connected with a guide groove. The rear side of the sand washing tank is fixedly connected with a muddy water return channel, and the muddy water return channel corresponds to the outer end of the guide groove. The water receiving drum blocks the muddy water filtered out by the sand washing drum from flowing back into the sand washing tank, and uses the guide groove to bring the muddy water out from the side of the water receiving drum. The muddy water is then collected by the muddy water return channel to achieve the recycling and reuse of the muddy water.

[0025] (9) The rear diameter of the water receiving drum is smaller than the front diameter. A water inlet pipe is fixedly connected to the top of the rear side of the sand washing tank. The special shape of the water receiving drum facilitates the guidance of muddy water to flow to the rear side of the sand washing drum. The water inlet pipe adds new water to the sand washing tank, effectively avoiding sand and mud accumulation.

[0026] (10) A sand flushing pipe is fixedly connected to the top of the sand inlet hopper, and a water outlet is opened on the surface of the sand flushing pipe toward the sand washing screen. One end of the sand flushing pipe is tilted upward and fixedly connected to the mud and water return channel. The sand flushing pipe is used to guide the mud and water collected in the mud and water return channel to flow toward the sand inlet hopper. The mud and water are sprayed from the water outlet toward the sand washing screen to flush the sand and gravel on the sand washing screen. While flushing and cleaning the sand and gravel, water is added to the sand washing water tank. The impact force brought by the mud and water can also accelerate the ability of sand and gravel to slide down the sand washing screen, making it easier for sand and gravel to slide into the sand washing pool. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A three-dimensional structural diagram of this application;

[0028] Figure 2 is a side cross-sectional view of the present application;

[0029] Figure 3 Demonstration diagram of the sand washing screen pressing down to wash sand and gravel for this application;

[0030] Figure 4 A three-dimensional structural diagram of the pressure gas chamber of this application;

[0031] Figure 5 A demonstration diagram of the pressure change of the airbag when pressing it for this application;

[0032] Figure 6 A three-dimensional structural diagram of the airbag for pressing the airbag in this application;

[0033] Figure 7 This is a rear perspective structural diagram of the sand washing drum of this application;

[0034] Figure 8 This is a sectional three-dimensional structural diagram of the water receiving drum of the present application;

[0035] Fig. 9 This is a three-dimensional structural diagram of the sand flushing pipe and mud water return channel of this application;

[0036] Fig.10 This is a three-dimensional structural diagram of the water receiving drum of this application.

[0037] Description of the numbers in the figure:

[0038] 1 sand washing tank, 2 sand washing drum, 3 sand washing water tank, 301 cavity tank, 302 sand washing screen, 303 screen pressing column, 304 overflow hole, 4 driving crankshaft, 5 sand inlet hopper, 501 sand flushing pipe, 502 water outlet, 6 pressure air chamber, 601 pressing air bag, 602 air bag pressing column, 603 perforation, 604 extrusion plate, 7 aeration pipe, 701 air guide pipe, 8 one-way air valve, 9 driving motor, 10 PLC controller, 11 water receiving drum, 1101 diversion trough, 12 mud water return channel. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0040] The first implementation method:

[0041] The present invention provides a multi-chamber water-gas combined sand washing machine with self-adjusting function, please refer to Figure 1-3, including a sand washing pool 1, and a sand washing drum 2 is movably connected to the top of the sand washing pool 1, a sand washing water tank 3 is fixedly connected to the top of one end of the sand washing pool 1, and a plurality of cavity slots 301 are arranged inside the sand washing water tank 3, such as Figure 1 As shown in the figure, two cavity grooves 301 are set, and the sand washing trough 3 and the sand washing screen 302 are both set in an inclined surface. In order to allow the sand and gravel to slide into the sand washing pool 1 better, the top of the cavity groove 301 is fixedly connected with the sand washing screen 302. The polyurethane screen has high tensile strength and tearing strength, good wear resistance, good resilience, small compression permanent deformation, and long service life. The middle part of the sand washing screen 302 is hinged with a screen pressing column 303, and the top of the sand washing trough 3 is movably connected with a driving crankshaft 4. The driving crankshaft 4 is used to drive the screen pressing column 303 to press the sand washing screen 302. An overflow hole 304 is provided on the outer surface of the sand washing trough 3. The water inside the sand washing trough 3 is disturbed by the sand washing screen 302, and the internal muddy water is violently disturbed. The sand and mud in the muddy water cannot be precipitated. The overflow hole 304 can discharge the excess muddy water together with the washed impurity sand and mud, so as to avoid the overflowing muddy water affecting the sand washing environment;

[0042] During the sand and gravel cleaning process, the sand and gravel are poured into the sand hopper 5 and slide into the sand washing tank 3. The sand washing screen 302 screens the sand and gravel, and the crankshaft 4 is driven to rotate to drive the screen pressing column 303 to move up and down repeatedly. Figure 3 As shown, during the descent of the screen pressing column 303, the sand washing screen 302 together with the sand and gravel are pressed down and immersed in the sand washing water tank 3. During the sinking process of the sand and gravel, they are subjected to the violent impact of the water flow, which disperses the originally gathered sand and gravel and removes impurities on the sand and gravel. Subsequently, the screen pressing column 303 rises together with the rebound recovery of the sand washing screen 302, and the washed sand and gravel then slide into the sand washing pool 1. The subsequent sand and gravel that slide in repeat the pressing and washing operation, which effectively improves the cleaning effect of the sand and gravel.

[0043] The second implementation method:

[0044] See also Figure 4-6The top sides of the sand washing tank 3 are respectively fixedly connected with a sand feeding hopper 5 and a pressure air chamber 6, and the interior of the pressure air chamber 6 is fixedly connected with a pressing air bag 601, and the middle of the pressing air bag 601 is movably connected with an air bag pressing column 602, and the air bag pressing column 602 passes through a through hole 603 opened in the middle of the pressing air bag 601, and the outer side of the pressing air bag 601 is fixedly connected with an extrusion plate 604, and the extrusion plate 604 is hinged to the air bag pressing column 602, and the extrusion plate 604 of corresponding length can fully squeeze the pressing air bag 601, thereby improving the exhaust efficiency of the pressing air bag 601, and the pressing air bag made of elastic rubber material is made of elastic rubber material. The airbag 601 is convenient for absorbing external air during rebound. The airbag pressing column 602 is movably connected to the driving crankshaft 4, so that the driving crankshaft 4 can synchronously drive the airbag pressing column 602 and the screen pressing column 303. The two sides of the bottom end of the sand washing tank 3 are fixedly connected with an aeration pipe 7, and an air guide pipe 701 is fixedly connected between the aeration pipe 7 and the pressing airbag 601, so that the air in the pressing airbag 601 is discharged from the aeration pipe 7, and the sand and gravel in the sand washing tank 3 are aerated and cleaned. The top of the pressing airbag 601 and the connecting end of the air guide pipe 701 are both installed with a one-way air valve 8, and the one-way air valve 8 realizes the one-way flow of air.

[0045] When the sand washing screen 302 and the sand and gravel are pressed into the sand washing tank 3 for cleaning, the driving crankshaft 4 synchronously drives the airbag pressing column 602, such as Figure 5 As shown, the airbag pressing column 602 cooperates with the extrusion plate 604 to apply pressure to the pressing airbag 601, and the air in the pressing airbag 601 is transported to the aeration pipe 7 through the air guide pipe 701. The air is ejected outward from the aeration pipe 7, and the bubbles generated flush the immersed sand and gravel, further disperse the sand and gravel, and improve the cleaning effect of the sand and gravel. Subsequently, the crankshaft 4 is driven to drive the airbag pressing column 602 to recover, and the pressing airbag 601 is stretched and re-inhaled with air for standby use;

[0046] A driving motor 9 is fixedly connected to the side of the sand washing tank 1, and the output end of the driving motor 9 is fixedly connected to the rotating shaft of the sand washing drum 2. The driving motor 9 drives the sand washing drum 2 to roll to realize the sand washing operation of the sand washing machine. The rotating shaft of the sand washing drum 2 is connected to the driving crankshaft 4 through a pulley transmission. The outside of the driving motor 9 is connected to a PLC controller 10, and the transmission between the sand washing drum 2 and the driving crankshaft 4 is realized by belt transmission.

[0047] When the sand washing machine is in use, the driving motor 9 drives the sand washing drum 2 to rotate to realize the sand washing function of the sand washing machine. The sand washing drum 2 and the driving crankshaft 4 are connected by belt drive to realize the transmission connection between the sand washing drum 2 and the driving crankshaft 4. The PLC controller 10 can control the output power of the driving motor 9, thereby realizing the regulation function of the sand washing machine.

[0048] The third implementation method:

[0049] Compared with Embodiment 1 and Embodiment 2, this embodiment mainly adds a water receiving drum 11 and a sand flushing pipe 501 to achieve the reuse of muddy water in the sand washing pool 1 and improve the utilization rate of water resources. Please refer to Figure 7-10 The sand washing drum 2 is internally fixed with a water receiving drum 11. The rear diameter of the water receiving drum 11 is smaller than the front diameter. The special shape facilitates the guidance of muddy water to the rear side of the sand washing drum 2. The surface of the water receiving drum 11 is fixedly connected with a guide groove 1101. The rear side of the sand washing pool 1 is fixedly connected with a muddy water return channel 12, and the muddy water return channel 12 corresponds to the outer end of the guide groove 1101. The water receiving drum 11 blocks the muddy water filtered out by the sand washing drum 2 from flowing back into the sand washing pool 1, and uses the guide groove 1101 to transfer the muddy water back to the sand washing pool 1. The water is brought out from the side of the water receiving drum 11, and the muddy water return channel 12 collects the brought out muddy water to realize the recycling of muddy water. The top of the rear side of the sand washing pool 1 is fixedly connected with a water inlet pipe, which adds new water to the sand washing pool 1 and replenishes the water loss of the sand washing pool 1. The top of the sand inlet hopper 5 is fixedly connected with a sand flushing pipe 501, and a water outlet head 502 facing the sand washing screen 302 is opened on the surface of the sand flushing pipe 501. One end of the sand flushing pipe 501 is tilted upward and fixedly connected to the muddy water return channel 12;

[0050] In the process of the sand washing drum 2 carrying the sand and gravel in the sand washing pool 1, part of the muddy water in the sand washing pool 1 will be brought out. This part of the muddy water is blocked by the water receiving drum 11 and will not return to the sand washing pool 1, but will be guided out of the sand washing drum 2 through the guide groove 1101, and then received by the muddy water return channel 12. The collected muddy water enters the sand flushing pipe 501, and is sprayed from the water outlet 502 of the sand flushing pipe 501 to the sand washing screen 302, so as to flush the sand and gravel on the sand washing screen 302, and provide the lost water volume for the sand washing water tank 3. The impact force provided facilitates the sand and gravel on the sand washing screen 302 to slide into the sand washing pool 1, thereby effectively improving the cleaning efficiency of the sand and gravel.

[0051] The above is only a preferred specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed in the present application according to the technical solution and its improved conception, which should be covered by the protection scope of the present application.

Claims

1. A multi-chamber water-air combined sand washing machine with a self-adjusting function, comprising a sand washing tank (1), wherein a sand washing drum (2) is movably connected to the top of the sand washing tank (1), It is characterized in that A sand washing trough (3) is fixedly connected to the top of one end of the sand washing pool (1), and a plurality of cavity troughs (301) are arranged inside the sand washing trough (3), a sand washing screen (302) is fixedly connected to the top of the cavity trough (301), and a screen pressing column (303) is hingedly connected to the middle of the sand washing screen (302), a driving crankshaft (4) is movably connected to the top of the sand washing trough (3), and the driving crankshaft (4) is movably connected to the top of the screen pressing column (303), the top of the sand washing trough (3) is arranged in an inclined surface, and an overflow hole (304) is provided on the outer surface of the sand washing trough (3), the sand washing screen (302) is arranged in an inclined surface corresponding to the top surface of the sand washing trough (3), and the sand washing screen (302) is a polyurethane screen; The top sides of the sand washing water tank (3) are respectively fixedly connected to a sand feeding hopper (5) and a pressure air chamber (6), and the interior of the pressure air chamber (6) is fixedly connected to a pressing air bag (601), the middle of the pressing air bag (601) is movably connected to an air bag pressing column (602), and the air bag pressing column (602) is movably connected to the driving crankshaft (4), the bottom sides of the sand washing water tank (3) are fixedly connected to an aeration pipe (7), and an air guide pipe (701) is fixedly connected between the aeration pipe (7) and the pressing air bag (601), and the pressing air bag (601) is fixedly connected to the aeration pipe (701). A one-way air valve (8) is installed at the top of the airbag (601) and the connecting end of the air guide tube (701); a through hole (603) is provided in the middle of the pressing airbag (601), and the through hole (603) is sleeved with the airbag pressing column (602); an extrusion plate (604) is fixedly connected to the outer side of the pressing airbag (601), and the extrusion plate (604) is hinged to the airbag pressing column (602); the length of the extrusion plate (604) corresponds to the length of the pressing airbag (601); and the pressing airbag (601) is made of elastic rubber material; The sand washing drum (2) is fixedly sleeved with a water receiving drum (11) inside, and a guide groove (1101) is fixedly connected to the surface of the water receiving drum (11), and a muddy water return channel (12) is fixedly connected to the rear side of the sand washing tank (1), and the muddy water return channel (12) corresponds to the outer end of the guide groove (1101); A sand flushing pipe (501) is fixedly connected to the top of the sand inlet hopper (5), and a water outlet (502) facing the sand washing screen (302) is provided on the surface of the sand flushing pipe (501). One end of the sand flushing pipe (501) is fixedly connected to the muddy water return channel (12) at an angle upward.

2. A multi-chamber water-gas combined sand washing machine with self-adjusting function according to claim 1, It is characterized in that A driving motor (9) is fixedly connected to the side of the sand washing tank (1), and an output end of the driving motor (9) is fixedly connected to the rotating shaft of the sand washing drum (2).

3. A multi-chamber water-gas combined sand washing machine with self-adjusting function according to claim 2, It is characterized in that The rotating shaft of the sand washing drum (2) is connected to the driving crankshaft (4) via a pulley transmission, and the outside of the driving motor (9) is connected to a PLC controller (10).

4. A multi-chamber water-gas combined sand washing machine with self-adjusting function according to claim 1, It is characterized in that The rear diameter of the water receiving drum (11) is smaller than the front diameter, and a water inlet pipe is fixedly connected to the top of the rear side of the sand washing tank (1).

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