Automatic sand supply device for precoated sand bin

Abstract

The invention discloses an automatic sand supply device for a precoated sand bin, and relates to the technical field of automatic sand supply. Comprising a bottom plate, a sand bin is arranged above the top of the bottom plate, a spiral conveyor is fixedly arranged at the bottom of the sand bin, a water tank is fixedly arranged on one side of the top of the bottom plate, a protection box is fixedly arranged at the top of the water tank, and a controller is arranged in the protection box; damping shock absorbers are fixedly arranged on the two sides of the bottom of the controller, the surfaces of the damping shock absorbers are sleeved with damping springs, a heat conduction plate is fixedly arranged at the bottoms of the damping springs, a heat conduction piece is fixedly arranged at the bottom of the heat conduction plate, and one end of the heat conduction piece penetrates through the top of the water tank and extends into the water tank. By arranging the damping shock absorbers and the shock absorption springs, the damping shock absorbers and the shock absorption springs are combined to buffer and absorb shock borne by the controller, damage of shock to the controller is reduced, and therefore the service life of the controller is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of automatic sand supply, in particular to an automatic sand supply device for a coated sand storage. Background Art

[0002] Coated sand. The surface of the sand is covered with a layer of solid resin film before molding. There are two coating processes: cold method and hot method. The cold method is to dissolve the resin with ethanol and add urotropine during the sand mixing process, so that the two are coated on the surface of the sand. The ethanol evaporates to obtain coated sand. The hot method is to preheat the sand to a certain temperature, add the resin to melt it, stir it to coat the resin on the surface of the sand, add urotropine aqueous solution and lubricant, cool, crush and screen to obtain coated sand. It is used for steel castings and iron castings.

[0003] Chinese utility model patent CN221454264U discloses a coated sand elevator device, including a bottom plate, two brackets are fixedly connected to both sides of the top of the bottom plate, four electric push rods are inserted on the four brackets, one end of the four electric push rods is fixedly connected to a fixed plate, four fixed rods are fixedly connected to the top of the bottom plate, the top of the four fixed rods is fixedly connected to the same load-bearing plate, a hopper is inserted on the load-bearing plate, and a fixed bar is fixedly connected to the top of the hopper. Through the arrangement of the bracket, the electric push rod and the fixed plate, the position of the device can be conveniently fixed, which can effectively prevent the device from being offset during the feeding process and affecting the feeding. Through the joint action of the first drive motor, the stirring rod, the second drive motor and the spiral blade, the coated sand can be stirred in the hopper, and the spiral blade can be rotated to lift the coated sand to feed, which can avoid blockage during the feeding process.

[0004] In order to control the motor in the device, the device is provided with a controller on one side of the load-bearing plate. However, the device does not have the function of shock-absorbing and protecting the controller. When the motor in the device is working, the whole device will vibrate. If the controller is not shock-absorbing and protected, long-term vibration may damage the components inside the controller, thereby shortening its service life. Summary of the invention

[0005] The invention provides an automatic sand supply device for a coated sand storage to solve the problems in the background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic sand supply device for a coated sand sand storage, comprising a bottom plate, a sand storage is arranged above the top of the bottom plate, a screw conveyor is fixedly arranged at the bottom of the sand storage, a water tank is fixedly arranged on one side of the top of the bottom plate, a protection box is fixedly arranged on the top of the water tank, a controller is arranged inside the protection box, damping shock absorbers are fixedly arranged on both sides of the bottom of the controller, shock absorbing springs are sleeved on the surface of the damping shock absorbers, a heat conducting plate is fixedly arranged on the bottom of the shock absorbing spring, a heat conducting sheet is fixedly arranged on the bottom of the heat conducting plate, one end of the heat conducting sheet passes through the top of the water tank and extends to the inside of the water tank, and a water quality detection probe is fixedly arranged on one side of the bottom of the inner wall of the water tank; An alarm device is fixedly provided on the top of the protection box, a lifting plate is movably provided inside the alarm device, a threaded hole is provided on one side of the lifting plate, and a screw rod is threadedly connected to the inner wall of the threaded hole, one end of the screw rod is fixedly connected to the output shaft of the first motor, fixing rods are fixedly provided on both sides of the top of the lifting plate, a cover plate is fixedly provided on one end of the fixing rod, a PLC controller is provided below the lifting plate, an online water quality detector is fixedly provided on the top of the lifting plate, and the online water quality detector is electrically connected to the water quality detection probe; A sound and light alarm is fixedly arranged on the top of the online water quality detector, a brush plate is movably arranged on the top of the sound and light alarm, the top of the brush plate is fixedly connected to the output shaft of the second motor, a dust box is fixedly arranged on the top of the cover plate, air pipes are fixedly arranged on both sides of the dust box, an air hood is fixedly arranged on one end of the air pipe, an exhaust fan is arranged on one side of the dust box, a copper tube is fixedly arranged on one side of the exhaust fan, a threaded telescopic tube is fixedly arranged on one end of the copper tube, one end of the threaded telescopic tube is connected with one side of the alarm device, a drawer is movably arranged inside the dust box, a silica gel drying plate and a filter are movably arranged inside the drawer, a cooling sleeve is provided on the surface of the copper tube, and a semiconductor refrigeration sheet is fixedly arranged on the bottom of the cooling sleeve.

[0007] Furthermore, a refrigerator is fixedly provided on one side of the water tank, and a refrigeration pipe is fixedly provided on one side of the refrigerator.

[0008] Furthermore, the silica gel drying plate and the drawer are movably connected via a first bolt, and the filter screen and the drawer are movably connected via a second bolt.

[0009] Furthermore, a connecting plate is fixedly provided on one side of the drawer, a limiting device is provided above the connecting plate, a nut seat is movably provided inside the limiting device, a screw is threadedly connected to the inner wall of the nut seat, one end of the screw is fixedly connected to the output shaft of the third motor, connecting rods are fixedly provided on both sides of the bottom of the nut seat, a limiting block is fixedly provided on one end of the connecting rod, and one end of the limiting block is movably provided in a slot at the top of the connecting plate.

[0010] Furthermore, the connection relationship between the limit block and the connecting plate is a snap connection.

[0011] Furthermore, an air cooling box is fixedly arranged at the bottom of the cooling sleeve, and a heat dissipation fan is arranged inside the air cooling box.

[0012] Furthermore, the cooling sleeve is made of copper.

[0013] Furthermore, the first bolt and the second bolt are made of stainless steel.

[0014] Furthermore, an electric push rod is fixedly arranged on the top of the second motor.

[0015] Furthermore, the heat conducting plate and the heat conducting sheet are both made of copper.

[0016] Compared with the prior art, the present invention provides an automatic sand supply device for a coated sand storage, which has the following beneficial effects:

[0017] 1. The automatic sand supply device of the coated sand sand storage is provided with a damping shock absorber and a shock absorbing spring. The damping shock absorber and the shock absorbing spring are combined to buffer and reduce shock to the controller, reduce the damage of the controller to the shock, and thus extend the service life of the controller.

[0018] 2. The automatic sand supply device of the coated sand sand storage is equipped with a heat conduction plate, a heat conduction sheet and a water tank. The heat conduction plate and the heat conduction sheet can perform heat conduction heat dissipation on the damping shock absorber and the shock absorbing spring, and transfer the heat of the damping shock absorber and the shock absorbing spring to the water tank. The cooling water in the water tank can absorb the heat, thereby reducing the temperature of the damping shock absorber and the shock absorbing spring, reducing the damage to the damping shock absorber and the shock absorbing spring caused by heat, thereby extending the service life of the damping shock absorber and the shock absorbing spring.

[0019] 3. The automatic sand supply device of the coated sand storage is equipped with a water quality detection probe, an online water quality detector, a PLC controller and an audible and visual alarm. The water quality detection probe can monitor the water quality of the cooling water in the water tank in real time. When the cooling water has been used for a long time, if its water quality drops to a preset threshold, the PLC controller will automatically trigger the audible and visual alarm to remind the staff to replace the cooling water in time.

[0020] 4. The automatic sand supply device for the coated sand storage is provided with a first motor and a screw rod. When the PLC controller turns on the sound and light alarm, the first motor is also started. The first motor drives the screw rod to rotate, and the rotating screw rod cooperates with the thread of the lifting plate to drive the sound and light alarm to move vertically and move it out of the alarm device. After the alarm is over, the sound and light alarm only needs to be stored back into the alarm device to prevent it from being contaminated or damaged by long-term exposure to the outside.

[0021] 5. The automatic sand supply device of the coated sand sand storage is provided with a brush plate and a second motor. The second motor can drive the brush plate to rotate, thereby effectively cleaning the surface of the sound and light alarm and preventing dust accumulation from weakening the lighting effect of the sound and light alarm.

[0022] 6. The automatic sand supply device of the coated sand storage is provided with a dust collecting box, an exhaust fan, an air hood, a filter, a silica gel drying plate, a cooling sleeve and a semiconductor refrigeration sheet. The exhaust fan sucks the dust generated when cleaning the sound and light alarm into the dust collecting box through the air hood, and the filter filters the sucked dust gas. Then, the silica gel drying plate dehumidifies the filtered clean gas to make it dry. Then, the dry gas is cooled by the cooling sleeve and the semiconductor refrigeration sheet to reduce the temperature of the dry gas. Finally, the dry gas with lower temperature enters the interior of the alarm device through the threaded telescopic tube to dissipate heat for the equipment in the alarm device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention;

[0024] Figure 2 It is a structural front view of the present invention;

[0025] Figure 3 It is a schematic diagram of the water tank structure of the present invention;

[0026] Figure 4 It is a schematic diagram of the structure of the alarm device of the present invention;

[0027] Figure 5 It is a schematic diagram of the structure of the dust collection box of the present invention;

[0028] Figure 6 It is a schematic diagram of the structure of the limiting device of the present invention.

[0029] In the figure: 1, bottom plate; 101, sand storage; 102, screw conveyor; 2, water tank; 201, protection box; 202, controller; 203, damping shock absorber; 204, shock absorbing spring; 205, heat conducting plate; 206, heat conducting sheet; 207, refrigerator; 208, refrigeration pipe; 209, water quality detection probe; 3, alarm device; 301, lifting plate; 302, plc controller; 303, online water quality detector; 304, screw rod; 305, first motor; 306, fixing rod; 307, cover plate; 4, sound and light alarm; 5, brush plate; 5 01. Second motor; 502. Electric push rod; 6. Dust box; 601. Air pipe; 602. Air hood; 603. Exhaust fan; 604. Copper tube; 605. Threaded telescopic tube; 7. Drawer; 701. Silica gel drying plate; 702. First bolt; 703. Filter; 704. Second bolt; 705. Connecting plate; 8. Limiting device; 801. Nut seat; 802. Screw; 803. Third motor; 804. Connecting rod; 805. Limiting block; 9. Cooling sleeve; 901. Air cooling box; 902. Semiconductor refrigeration sheet; 903. Cooling fan. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1-6 The present invention discloses an automatic sand supply device for a coated sand sand storage, comprising a bottom plate 1, a sand storage 101 is arranged above the top of the bottom plate 1, a screw conveyor 102 is fixedly arranged at the bottom of the sand storage 101, a water tank 2 is fixedly arranged on one side of the top of the bottom plate 1, a protection box 201 is fixedly arranged on the top of the water tank 2, a controller 202 is arranged inside the protection box 201, the controller 202 can be a programmable logic controller or other control equipment, damping shock absorbers 203 are fixedly arranged on both sides of the bottom of the controller 202, shock absorbing springs 204 are sleeved on the surface of the damping shock absorber 203, a heat conducting plate 205 is fixedly arranged at the bottom of the shock absorbing spring 204, a heat conducting sheet 206 is fixedly arranged at the bottom of the heat conducting plate 205, one end of the heat conducting sheet 206 passes through the top of the water tank 2 and extends to the inside of the water tank 2, and a water quality detection probe 209 is fixedly arranged on one side of the bottom of the inner wall of the water tank 2; An alarm device 3 is fixedly provided on the top of the protection box 201, and a lifting plate 301 is movably provided inside the alarm device 3. A threaded hole is provided on one side of the lifting plate 301, and a screw rod 304 is threadedly connected to the inner wall of the threaded hole, and one end of the screw rod 304 is fixedly connected to the output shaft of the first motor 305. Fixed rods 306 are fixedly provided on both sides of the top of the lifting plate 301, and a cover plate 307 is fixedly provided on one end of the fixed rod 306. A plc controller 302 is provided below the lifting plate 301, and an online water quality detector 303 is fixedly provided on the top of the lifting plate 301. The online water quality detector 303 is an existing device, such as a water quality detector with a model of TE-R10, and the online water quality detector 303 is electrically connected to the water quality detection probe 209; A sound and light alarm 4 is fixedly provided on the top of the online water quality detector 303, a brush plate 5 is movably provided on the top of the sound and light alarm 4, the top of the brush plate 5 is fixedly connected to the output shaft of the second motor 501, a dust box 6 is fixedly provided on the top of the cover plate 307, air pipes 601 are fixedly provided on both sides of the dust box 6, an air hood 602 is fixedly provided on one end of the air pipe 601, an exhaust fan 603 is provided on one side of the dust box 6, a copper tube 604 is fixedly provided on one side of the exhaust fan 603, a threaded telescopic tube 605 is fixedly provided on one end of the copper tube 604, one end of the threaded telescopic tube 605 is connected to one side of the alarm device 3, a drawer 7 is movably provided inside the dust box 6, a silica gel drying plate 701 and a filter 703 are movably provided inside the drawer 7, a cooling sleeve 9 is provided on the surface of the copper tube 604, and a semiconductor refrigeration sheet 902 is fixedly provided on the bottom of the cooling sleeve 9.

[0032] Specifically, a refrigerator 207 is fixedly disposed on one side of the water tank 2 , and a refrigeration pipe 208 is fixedly disposed on one side of the refrigerator 207 .

[0033] In this embodiment, by providing a refrigerator 207, the cooling water in the water tank 2 can be cooled and reduced so that the cooling water always maintains a low temperature state.

[0034] Specifically, the silica gel drying plate 701 is movably connected to the drawer 7 via a first bolt 702 , and the filter screen 703 is movably connected to the drawer 7 via a second bolt 704 .

[0035] In this embodiment, by providing the first bolt 702 and the second bolt 704 , the silica gel drying plate 701 and the filter screen 703 can be detachable, thereby facilitating replacement of the silica gel drying plate 701 and the filter screen 703 .

[0036] Specifically, a connecting plate 705 is fixedly provided on one side of the drawer 7, a limiting device 8 is provided above the connecting plate 705, a nut seat 801 is movably provided inside the limiting device 8, a screw 802 is threadedly connected to the inner wall of the nut seat 801, one end of the screw 802 is fixedly connected to the output shaft of the third motor 803, connecting rods 804 are fixedly provided on both sides of the bottom of the nut seat 801, a limiting block 805 is fixedly provided at one end of the connecting rod 804, and one end of the limiting block 805 is movably provided in the slot at the top of the connecting plate 705.

[0037] In this embodiment, by setting a limit device 8, the third motor 803 drives the screw 802 to rotate, and the rotating screw 802 drives the connecting rod 804 and the limit block 805 to move vertically through the threaded cooperation with the nut seat 801. When one end of the limit block 805 is moved out of the slot on the connecting plate 705, the restriction on the connecting plate 705 can be released, and then the drawer 7 can be pulled out.

[0038] Specifically, the connection relationship between the limit block 805 and the connecting plate 705 is a snap connection.

[0039] In this embodiment, by setting a limit block 805, the third motor 803 drives the screw 802 to rotate, and the rotating screw 802 drives the connecting rod 804 and the limit block 805 to move vertically through the threaded cooperation with the nut seat 801. When one end of the limit block 805 is inserted into the slot on the connecting plate 705, the connecting plate 705 can be restricted.

[0040] Specifically, an air cooling box 901 is fixedly disposed at the bottom of the cooling sleeve 9 , and a heat dissipation fan 903 is disposed inside the air cooling box 901 .

[0041] In this embodiment, by providing a heat dissipation fan 903, the hot end of the semiconductor cooling plate 902 can be cooled.

[0042] Specifically, the cooling sleeve 9 is made of copper.

[0043] In this embodiment, a cooling sleeve 9 made of copper is provided, and the cooling sleeve 9 is sleeved on the surface of the copper tube 604 , so that the heat in the copper tube 604 can be effectively conducted away.

[0044] Specifically, the first bolt 702 and the second bolt 704 are made of stainless steel.

[0045] In this embodiment, by providing bolts made of stainless steel, the bolts are less likely to rust.

[0046] Specifically, an electric push rod 502 is fixedly disposed on the top of the second motor 501 .

[0047] In this embodiment, by providing an electric push rod 502 , the brush plate 5 can be driven to move vertically, so that the brush plate 5 can be away from or close to the sound and light alarm 4 .

[0048] Specifically, the heat conducting plate 205 and the heat conducting sheet 206 are both made of copper.

[0049] In this embodiment, by providing the heat conducting plate 205 and the heat conducting sheet 206 made of copper, the heat conducting effect is good, and the heat of the damping shock absorber 203 and the shock absorbing spring 204 can be effectively conducted out.

[0050] When in use, the screw conveyor 102 and the stirring mechanism on the sand storage 101 are started by the instruction of the controller 202. The screw conveyor 102 is responsible for continuously and stably conveying the coated sand inside the sand storage 101 from a low place to a high place, thereby realizing the function of automatic sand supply; The screw conveyor 102 and the stirring mechanism on the sand storage 101 are driven by motor equipment. The motor causes the entire device to vibrate while running. The damping shock absorber 203 combined with the shock absorbing spring 204 can buffer and reduce the vibration of the controller 202, thereby reducing the damage of the vibration to the controller 202; When the damping shock absorber 203 and the shock absorbing spring 204 are performing buffering and shock absorption, a certain amount of heat will be generated on the damping shock absorber 203 and the shock absorbing spring 204, and then the temperature will rise. When the damping shock absorber 203 and the shock absorbing spring 204 are dissipated by heat, the heat conducting plate 205 and the heat conducting sheet 206 can perform heat conduction heat dissipation on the damping shock absorber 203 and the shock absorbing spring 204, and transfer the heat of the damping shock absorber 203 and the shock absorbing spring 204 to the water tank 2. The cooling water in the water tank 2 can absorb the heat, thereby reducing the temperature of the damping shock absorber 203 and the shock absorbing spring 204. The refrigerator 207 can cool and reduce the cooling water in the water tank 2, so that the cooling water always maintains a low temperature state; After long-term use, the cooling water in the water tank 2 will gradually deteriorate in quality, resulting in reduced heat dissipation effect. However, it is often difficult for staff to accurately determine when the cooling water needs to be replaced, which may cause the cooling water to be replaced too early or too late. The water quality detection probe 209 can monitor the water quality of the cooling water in the water tank 2 in real time. When the cooling water has been used for a long time, if its water quality drops to a preset threshold, the PLC controller 302 will automatically trigger the sound and light alarm 4 to sound and light alarm to remind the staff to replace the cooling water in time; After the sound and light alarm 4 has been used for a period of time, dust will adhere to the surface of the sound and light alarm 4. When cleaning the surface of the sound and light alarm 4, the electric push rod 502 is started, and the electric push rod 502 drives the brush plate 5 to press down, so that the brush plate 5 fits the surface of the sound and light alarm 4, and then the second motor 501 is started, and the second motor 501 can drive the brush plate 5 to rotate, thereby effectively cleaning the surface of the sound and light alarm 4; During the cleaning process of the sound and light alarm 4, dust will be raised. When the raised dust is vacuumed, the exhaust fan 603 sucks the dust generated when cleaning the sound and light alarm 4 into the dust box 6 through the air hood 602, and the filter 703 filters the sucked dust gas. Then, the silica gel drying plate 701 dehumidifies the filtered clean gas to make it dry. Then, the dry gas is cooled by the heat dissipation of the cooling sleeve 9 and the semiconductor refrigeration sheet 902, so that the temperature of the dry gas becomes lower. Finally, these low-temperature dry gases enter the interior of the alarm device 3 through the threaded telescopic tube 605 to dissipate heat for the equipment in the alarm device 3.

[0051] In summary, the automatic sand supply device of the coated sand sand storage is provided with a damping shock absorber 203 and a shock absorbing spring 204. The damping shock absorber 203 and the shock absorbing spring 204 are combined to buffer and absorb shocks to the controller 202, reduce the damage to the controller 202 caused by the shock, and thus extend the service life of the controller 202. The heat conducting plate 205, the heat conducting sheet 206 and the water tank 2 are provided. The heat conducting plate 205 and the heat conducting sheet 206 can conduct heat dissipation to the damping shock absorber 203 and the shock absorbing spring 204, and conduct the heat of the damping shock absorber 203 and the shock absorbing spring 204 to the water tank 2. The cooling water in the water tank 2 can absorb the heat, thereby reducing the temperature of the damping shock absorber 203 and the shock absorbing spring 204, reducing the damage to the damping shock absorber 203 and the shock absorbing spring 204 caused by heat, and thus extending the service life of the damping shock absorber 203 and the shock absorbing spring 204. By setting a water quality detection probe 209, an online water quality detector 303, a plc controller 302 and an acoustic and visual alarm 4, the water quality detection probe 209 can monitor the water quality of the cooling water in the water tank 2 in real time. When the cooling water has been used for a long time, if its water quality drops to a preset threshold, the plc controller 302 will automatically trigger the acoustic and visual alarm 4 to sound and light alarm to remind the staff to replace the cooling water in time. By setting a first motor 305 and a screw rod 304, when the plc controller 302 turns on the acoustic and visual alarm 4, it will also start the first motor 305. The first motor 305 drives the screw rod 304 to rotate, and the rotating screw rod 304 cooperates with the thread of the lifting plate 301 to drive the acoustic and visual alarm 4 to move vertically, so that it is moved out of the alarm device 3. After the alarm ends, the acoustic and visual alarm 4 only needs to be stored back in the alarm device 3 to prevent it from being exposed to the outside for a long time and being contaminated or damaged; By setting the brush plate 5 and the second motor 501, the second motor 501 can drive the brush plate 5 to rotate, so as to effectively clean the surface of the sound and light alarm 4, and prevent the accumulation of dust from causing the light effect of the sound and light alarm 4 to weaken. By setting the dust box 6, the exhaust fan 603, the air cover 602, the filter 703, the silica gel drying plate 701, the cooling sleeve 9 and the semiconductor cooling sheet 902, the exhaust fan 603 sucks the dust generated when cleaning the sound and light alarm 4 into the dust box 6 through the air cover 602, and the filter 703 filters the sucked dust gas. Then, the silica gel drying plate 701 dehumidifies the filtered clean gas to make it dry. Then, the dry gas is cooled by the cooling sleeve 9 and the semiconductor cooling sheet 902, so that the temperature of the dry gas becomes lower. Finally, these low-temperature dry gases enter the interior of the alarm device 3 through the threaded telescopic tube 605 to dissipate heat for the equipment in the alarm device 3.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic sand supply device for a coated sand storage, comprising a bottom plate (1), characterized in that: A sand reservoir (101) is arranged above the top of the bottom plate (1), a screw conveyor (102) is fixedly arranged at the bottom of the sand reservoir (101), a water tank (2) is fixedly arranged on one side of the top of the bottom plate (1), a protection box (201) is fixedly arranged on the top of the water tank (2), a controller (202) is arranged inside the protection box (201), damping shock absorbers (203) are fixedly arranged on both sides of the bottom of the controller (202), a shock absorbing spring (204) is sleeved on the surface of the damping shock absorber (203), a heat conducting plate (205) is fixedly arranged at the bottom of the shock absorbing spring (204), a heat conducting sheet (206) is fixedly arranged at the bottom of the heat conducting plate (205), one end of the heat conducting sheet (206) passes through the top of the water tank (2) and extends into the interior of the water tank (2), and a water quality detection probe (209) is fixedly arranged on one side of the bottom of the inner wall of the water tank (2); An alarm device (3) is fixedly arranged on the top of the protection box (201), a lifting plate (301) is movably arranged inside the alarm device (3), a threaded hole is opened on one side of the lifting plate (301), and a screw rod (304) is threadedly connected to the inner wall of the threaded hole, one end of the screw rod (304) is fixedly connected to the output shaft of the first motor (305), fixing rods (306) are fixedly arranged on both sides of the top of the lifting plate (301), and a cover plate (307) is fixedly arranged on one end of the fixing rod (306), a PLC controller (302) is arranged below the lifting plate (301), and an online water quality detector (303) is fixedly arranged on the top of the lifting plate (301), and the online water quality detector (303) is electrically connected to the water quality detection probe (209); The top of the online water quality detector (303) is fixedly provided with an audible and visual alarm (4), the top of the audible and visual alarm (4) is movably provided with a brush plate (5), the top of the brush plate (5) is fixedly connected to the output shaft of the second motor (501), the top of the cover plate (307) is fixedly provided with a dust box (6), both sides of the dust box (6) are fixedly provided with air pipes (601), one end of the air pipe (601) is fixedly provided with an air hood (602), one side of the dust box (6) is provided with an exhaust fan (603), and the exhaust fan (603) is fixedly provided with an air hood (602). A copper tube (604) is fixedly provided on one side of the machine (603); a threaded telescopic tube (605) is fixedly provided on one end of the copper tube (604); one end of the threaded telescopic tube (605) is connected to one side of the alarm device (3); a drawer (7) is movably provided inside the dust collection box (6); a silica gel drying plate (701) and a filter (703) are movably provided inside the drawer (7); a cooling sleeve (9) is provided on the surface of the copper tube (604); a semiconductor cooling plate (902) is fixedly provided on the bottom of the cooling sleeve (9).

2. The automatic sand supply device for coated sand storage according to claim 1, characterized in that: A refrigeration machine (207) is fixedly arranged on one side of the water tank (2), and a refrigeration pipe (208) is fixedly arranged on one side of the refrigeration machine (207).

3. The automatic sand supply device for coated sand storage according to claim 1 is characterized in that: The silica gel drying plate (701) and the drawer (7) are movably connected via a first bolt (702), and the filter screen (703) and the drawer (7) are movably connected via a second bolt (704).

4. The automatic sand supply device for coated sand storage according to claim 1 is characterized in that: A connecting plate (705) is fixedly provided on one side of the drawer (7), a limiting device (8) is provided above the connecting plate (705), a nut seat (801) is movably provided inside the limiting device (8), a screw rod (802) is threadedly connected to the inner wall of the nut seat (801), one end of the screw rod (802) is fixedly connected to the output shaft of the third motor (803), connecting rods (804) are fixedly provided on both sides of the bottom of the nut seat (801), a limiting block (805) is fixedly provided at one end of the connecting rod (804), and one end of the limiting block (805) is movably provided in a slot at the top of the connecting plate (705).

5. The automatic sand supply device for coated sand storage according to claim 4 is characterized in that: The connection relationship between the limit block (805) and the connecting plate (705) is a snap connection.

6. The automatic sand supply device for coated sand storage according to claim 1, characterized in that: An air cooling box (901) is fixedly arranged at the bottom of the cooling sleeve (9), and a heat dissipation fan (903) is arranged inside the air cooling box (901).

7. The automatic sand supply device for coated sand storage according to claim 1, characterized in that: The material of the cooling sleeve (9) is copper.

8. The automatic sand supply device for coated sand storage according to claim 3 is characterized by: The first bolt (702) and the second bolt (704) are made of stainless steel.

9. The automatic sand supply device for coated sand storage according to claim 6, characterized in that: An electric push rod (502) is fixedly arranged on the top of the second motor (501).

10. The automatic sand supply device for coated sand storage according to claim 1, characterized in that: The heat conducting plate (205) and the heat conducting sheet (206) are both made of copper.

Images