Sand storage tank for recycling foundry sand

Abstract

The utility model relates to a sand storage tank for recycling foundry sand, which belongs to the field of foundry equipment and is characterized in that the sand storage tank is fixedly connected with a support, a discharge port, a feed hopper, a screen piece, a slag outlet and an air outlet, the screen piece is fixedly connected with a vibration motor, the slag outlet is fixedly connected with a slag outlet pipe, the air outlet is fixedly connected with a centrifugal fan, and the upper portion of the centrifugal fan is fixedly connected with a high-speed motor. The sand storage tank in a hollow cuboid shape is adopted, the arc-shaped screen is installed on the upper portion in the sand storage tank, the vibration motor is installed at the bottom of the arc-shaped screen piece, the centrifugal fan is installed on the top of the sand storage tank, and the dust removal bag is installed at an outlet of the centrifugal fan. Foundry sand is vibrated by the vibration motor after falling into the screen piece so that the foundry sand can penetrate through the screen piece to be separated from impurities, foundry sand dust generated in the vibration process above the screen piece is collected into the dust removal bag through the centrifugal fan, and the environment-friendly sand storage tank is simple in structure and capable of separating impurities and collecting dust.

Description

Technical Field

[0001] The utility model relates to a sand storage tank for recycling foundry sand, belonging to the field of foundry equipment, and involving waste residue separation and dust removal devices of the sand storage tank. Background Technique

[0002] A sand storage tank is a large metal tank used to store foundry sand. Currently, sand storage tanks are roughly divided into two types. One is a cylindrical sand storage tank, which has the advantages of small floor area, large storage capacity, and a funnel-shaped bottom plate at the bottom for easy discharging. However, its disadvantages are single function, inability to separate impurities, and inability to collect dust during the filling process. The other is a cuboid-shaped sand storage tank, which has the advantages of simple production, low price, and a trapezoidal bottom plate at the bottom for easy discharging. Its disadvantages are also single function, inability to separate impurities, and inability to eliminate dust during the filling process. Therefore, an environmentally friendly sand storage tank with a simple structure, capable of separating impurities and collecting dust is needed.

[0003] Application No.: 2023207624848 A sand storage tank with a built-in sand supply pump belongs to the field of foundry facilities. The inner wall of the sand storage tank is connected to a lifter, the bottom of the sand storage tank is connected to a hopper, the upper opening of the hopper is connected to a base, the upper part of the lifter is connected to a positioning retaining ring, the upper part of the lifter is connected to a rotary joint, the top of the lifter is connected to a reduction motor, a feed inlet is arranged below the lifter, the bottom of the lifter is connected to a graphite bearing, a discharge outlet is arranged above the lifter, a lifting shaft is installed inside the lifter, a blanking port is arranged at the bottom of the rotary joint, the blanking port is connected to a discharge pipe, the discharge pipe is connected to a steel wire hose, and the sand storage tank and the sand supply pump are integrally arranged. The lifting shaft inside the lifter is rotated by the reduction motor, and the foundry sand in the sand storage tank is directly lifted from the feed inlet to the discharge outlet through the lifting blades, then freely falls into the discharge pipe through the blanking port, and finally falls into the sand box through the steel wire hose.

[0004] Application No.: 2018208139868 A foundry sand recycling and impurity removal facility belongs to the field of foundry facilities. A cylindrical sand storage tank is used, and an exhaust duct is installed at its top and connected to a centrifugal fan. A sand inlet is arranged at the top end of the side of the sand storage tank, a screening box is arranged outside the sand inlet, a rotary joint is arranged at the upper end of the screening box, a sand suction pipe extends outward from the rotary joint, a steel wire hose is installed at the front end of the sand suction pipe, and a pneumatic reamer is arranged at the front end of the steel wire hose. When the centrifugal fan is started, the fan sucks the air inside the sand storage tank to form a negative pressure, and the sand storage tank then sucks the air and foundry sand into the sand storage tank through the screening box, the sand suction pipe, and the pneumatic reamer. During this process, the airflow will blow the blades of the pneumatic reamer to rotate rapidly, forcing the blades to drive the central shaft of the pneumatic reamer to rotate rapidly to stir up the foundry sand and then suck it into the sand suction pipe.

[0005] The above-mentioned sand storage tank with a built-in sand supply pump realizes the integration of sand storage and sand supply through a sand storage tank, a lifter, a hopper, a base, a positioning retaining ring, a rotary joint, a reduction motor, a feed inlet, a graphite bearing, a discharge outlet, a lifting shaft, a blanking port, a discharge pipe, and a steel wire hose. The above-mentioned foundry sand recycling and impurity removal facility realizes the effects of foundry sand recycling, impurity removal, and storage through a sand storage tank, an exhaust duct, a centrifugal fan, a sand inlet, a screening box, a rotary joint, a sand suction pipe, a steel wire hose, and a pneumatic reamer. However, this equipment has a large fan power, no dust removal facility, and the dust scatters everywhere, polluting the air. Summary of the Invention

[0006] A sand storage tank for recycling foundry sand in the present invention adopts a sand storage tank in the shape of a hollow cuboid. An arc-shaped sieve is installed above the interior of the sand storage tank, and a vibration motor is installed at the bottom of the arc-shaped sieve plate. A centrifugal fan is installed at the top of the sand storage tank, and a dust removal bag is installed at the outlet of the centrifugal fan. After the foundry sand falls onto the sieve plate, the vibration motor vibrates it to make the foundry sand pass through the sieve plate and separate from the impurities. The centrifugal fan takes in the foundry sand dust generated during the vibration above the sieve plate into the dust removal bag.

[0007] The technical solution of the present invention is as follows. A sand storage tank for recycling foundry sand includes a sand storage tank 1, which is fixedly connected to a support 2, a discharge port 3, a feed hopper 4, a sieve plate 5, a slag discharge port 7, and an air outlet 9. The sieve plate 5 is fixedly connected to a vibration motor 6. The slag discharge port 7 is fixedly connected to a slag discharge pipe 8. The air outlet 9 is fixedly connected to a centrifugal fan 10. Above the centrifugal fan 10 is fixedly connected to a high-speed motor 11. The centrifugal fan 10 is movably connected to a dust removal bag 12. An air switch 13 is installed on the power distribution cabinet. The air switch 13 is connected to the vibration motor 6 and the high-speed motor 11 through a power cord.

[0008] Further, the sand storage tank 1 is in the shape of a hollow cuboid. The bottom plate of the sand storage tank 1 is in the shape of a trapezoid, and a discharge port 3 is provided directly in front of the bottom plate. The discharge port 3 is connected to the inlet of the sand supply pump.

[0009] Further, a long strip-shaped support 2 is vertically installed at each of the four corners at the bottom of the sand storage tank 1.

[0010] Further, a feed hopper 4 in the shape of a hollow trapezoid is installed above the right side of the sand storage tank 1. The upper part of the feed hopper 4 is open, and the outlet on the left side of the feed hopper 4 communicates with the feed inlet on the right side of the sand storage tank 1.

[0011] Further, a rectangular slag discharge port 7 is provided above the right side of the sand storage tank 1. The left side of the slag discharge port 7 is connected to the upper part of a hollow arc-shaped slag discharge pipe 8.

[0012] Further, the air outlet 9 provided at the top of the sand storage tank 1 communicates with the inlet of the centrifugal fan 10.

[0013] Furthermore, the dust removal bag 12 installed above the outlet of the centrifugal fan 10 is a hollow rectangle, and the fabric of the dust removal bag 12 is made of cotton and linen, with the cloth eye diameter less than 0.3 mm.

[0014] Furthermore, the sieve plate 5 is rectangular and installed above the inside of the sand storage tank 1. The left top end of the sieve plate 5 is connected to the lower part of the slag outlet 7, and the right top end of the sieve plate 5 is connected to the upper part of the right inner side of the sand storage tank 1. The connection part is 2 - 10 cm lower than the lower part of the opening on the left side of the feed hopper 4. Mesh holes with a diameter of 3 - 5 mm are evenly arranged on the sieve plate 5.

[0015] Furthermore, the vibration motor 6 is cylindrical and installed on the right side of the bottom of the sieve plate 5 through a bracket.

[0016] Beneficial effects: The current cylindrical sand storage tank has a single function, cannot separate impurities, and cannot collect dust during the filling process. The cuboid-shaped sand storage tank also has a single function, cannot separate impurities, and cannot eliminate dust during the filling process.

[0017] A sand storage tank for recycling foundry sand adopts a hollow cuboid-shaped sand storage tank. An arc sieve is installed above the inside of the sand storage tank, a vibration motor is installed at the bottom of the arc sieve plate, a centrifugal fan is installed at the top of the sand storage tank, and a dust removal bag is installed at the outlet of the centrifugal fan. After the foundry sand falls onto the sieve plate, the vibration motor vibrates it to make the foundry sand pass through the sieve plate and separate from the impurities. The centrifugal fan collects the foundry sand dust generated during the vibration above the sieve plate into the dust removal bag, realizing an environmentally friendly sand storage tank with a simple structure, capable of separating impurities and collecting dust. Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the internal and external structures of a sand storage tank for recycling foundry sand;

[0019] Figure 2 It is a schematic diagram of the connection of the air switch to the vibration motor and the high-speed motor through the power cord;

[0020] In the figure, 1. Sand storage tank; 2. Bracket; 3. Discharge port; 4. Feed hopper; 5. Sieve plate; 6. Vibration motor (AC380V / 1 - 2kw); 7. Slag outlet; 8. Slag discharge pipe; 9. Air outlet; 10. Centrifugal fan; 11. High-speed motor (AC380V / 3 - 5kw); 12. Dust removal bag; 13. Air switch (AC380V / 60A). Specific Embodiments

[0021] Combined with the drawings and the reference numerals, the structure and shape of the present invention are described in detail:

[0022] Embodiment 1

[0023] See the appendix Figure 1-2, A sand storage tank for recycling foundry sand includes a sand storage tank 1. The above-mentioned sand storage tank 1 is used to store foundry sand. The sand storage tank 1 is fixedly connected to a bracket 2, a discharge port 3, a feed hopper 4, a sieve plate 5, a slag discharge port 7, and an air outlet 9. The above-mentioned bracket 2 is used to support the sand storage tank 1. The above-mentioned discharge port 3 is used to discharge the foundry sand inside the sand storage tank 1. The above-mentioned feed hopper 4 is used to introduce the recycled foundry sand into the sand storage tank 1. The above-mentioned sieve plate 5 is used to separate impurities entering the sand storage tank 1. The above-mentioned slag discharge port 7 is used to introduce the impurities separated by the sieve plate 5 into the slag discharge pipe 8. The above-mentioned air outlet 9 is used to introduce the air and dust inside the sand storage tank 1 into the centrifugal fan 10. The sieve plate 5 is fixedly connected to a vibration motor 6. The above-mentioned vibration motor 6 is used to resonate with the sieve plate 5 to enable the foundry sand to pass through the mesh smoothly. The slag discharge port 7 is fixedly connected to the slag discharge pipe 8. The air outlet 9 is fixedly connected to the centrifugal fan 10. Above the centrifugal fan 10, a high-speed motor 11 is fixedly connected. The above-mentioned high-speed motor 11 is used to drive the centrifugal fan to rotate at high speed to generate centrifugal force. The centrifugal fan 10 is movably connected to a dust removal bag 12. The above-mentioned dust removal bag 12 is used to collect dust. An air switch 13 is installed on the power distribution cabinet. The air switch 13 is connected to the vibration motor 6 and the high-speed motor 11 through a power cord.

[0024] See the appendix Figure 1 , The sand storage tank 1 is in the shape of a hollow cuboid. The bottom plate of the sand storage tank 1 is in the shape of a trapezoid. The discharge port 3 is provided directly in front of the bottom plate. The discharge port 3 is connected to the inlet of the sand supply pump.

[0025] See the appendix Figure 1 , Four legs are perpendicularly installed at the four corners of the bottom of the sand storage tank 1, each in the shape of a long strip, which serve as the bracket 2.

[0026] See the appendix Figure 1 , Above the right side of the sand storage tank 1, a feed hopper 4 in the shape of a hollow trapezoid is installed. The top of the feed hopper 4 is open. The outlet on the left side of the feed hopper 4 communicates with the feed inlet on the right side of the sand storage tank 1.

[0027] See the appendix Figure 1 , Above the right side of the sand storage tank 1, a rectangular slag discharge port 7 is provided. The left side of the slag discharge port 7 is connected to the upper part of the hollow arc-shaped slag discharge pipe 8.

[0028] See the appendix Figure 1 , The air outlet 9 provided at the top of the sand storage tank 1 communicates with the inlet of the centrifugal fan 10.

[0029] See the appendix Figure 1 , The dust removal bag 12 installed above the outlet of the centrifugal fan 10 is in the shape of a hollow rectangle. The fabric of the dust removal bag 12 is made of cotton and linen, and the diameter of the cloth holes is less than 0.3 mm.

[0030] See the appendix Figure 1, the sieve plate 5 is rectangular and installed above the inside of the sand storage tank 1. The left top end of the sieve plate 5 is connected to the lower part of the slag outlet 7, and the right top end of the sieve plate 5 is connected to the upper part of the right inner side of the sand storage tank 1. The connection part is 2-10 cm lower than the lower part of the opening on the left side of the feed hopper 4. Uniformly arranged on the sieve plate 5 are mesh holes with a diameter of 3-5 mm.

[0031] See the appendix Figure 1 , the vibration motor 6 is cylindrical in shape and is installed on the right side of the bottom of the sieve plate 5 through a bracket.

[0032] When the sand storage tank for recycling foundry sand is in use, the worker turns on the air switch 13. The vibration motor 6 rotates rapidly to drive the sieve plate 5 to generate resonance. The high-speed motor 11 drives the centrifugal fan to rotate at high speed to generate centrifugal force. The centrifugal force sucks the air inside the sand storage tank 1 and then pressurizes it and sends it into the dust removal bag 12. The worker turns on the feeding conveyor belt to convey the recycled foundry sand into the feed hopper 4. The foundry sand enters the inside of the sand storage tank 1 through the feed inlet of the sand storage tank 1 and then falls onto the sieve plate 5. The foundry sand is quickly vibrated up and down by the vibration wave of the sieve plate 5. The foundry sand with a diameter less than 3-5 mm smoothly passes through the mesh holes of the sieve plate 5 and falls into the inside of the sand storage tank 1. The impurities with a diameter greater than 3-5 mm are isolated on it by the sieve plate 5 and then are pushed by the vibration wave of the sieve plate 5 towards the slag outlet 7 and then slide into the slag discharge pipe 8. During this process, the dust generated by the rapid up and down vibration of the foundry sand by the vibration wave of the sieve plate 5 is sucked by the centrifugal fan 10 and sent into the dust removal bag 12. The air is squeezed out through the cloth holes of the dust removal bag 12, and the dust cannot pass through the cloth holes and remains inside the dust removal bag 12.

Claims

1. A sand storage tank for recycling foundry sand, comprising a sand storage tank, characterized in that the sand storage tank is fixedly connected to a bracket, a discharge port, a feed hopper, a screen, a slag discharge port, and an air outlet, the screen is fixedly connected to a vibration motor, the slag discharge port is fixedly connected to a slag discharge pipe, the air outlet is fixedly connected to a centrifugal fan, the top of the centrifugal fan is fixedly connected to a high-speed motor, the centrifugal fan is movably connected to a dust removal bag, an air switch is installed on a power distribution cabinet, and the air switch is connected to the vibration motor and the high-speed motor through a power cord.

2. A foundry sand storage tank for recycling according to claim 1, characterized in that The sand storage tank is in the shape of a hollow rectangular parallelepiped, the bottom plate of the sand storage tank is in the shape of a trapezoid, a discharge port is arranged right in front of the bottom plate, and the discharge port is connected to the inlet of the sand supply pump.

3. A foundry sand storage tank for recycling according to claim 1 or 2, characterized in that A long strip of brackets is vertically installed at the four corners of the bottom of the sand storage tank.

4. A foundry sand storage tank for recycling according to claim 1 or 2, characterized in that A feeding hopper in the shape of a hollow trapezoid is installed above the right side of the sand storage tank. The top of the feeding hopper is an opening, and the outlet on the left side of the feeding hopper is connected to the feeding port on the right side of the sand storage tank.

5. A foundry sand storage tank for recycling according to claim 1 or 2, characterized in that A rectangular slag outlet is arranged above the right side of the sand storage tank, and the left side of the slag outlet is connected to the top of the hollow arc slag outlet pipe.

6. A foundry sand storage tank for recycling according to claim 1 or 2, characterized in that The air outlet arranged on the top of the sand storage tank is communicated with the inlet of the centrifugal fan.

7. The foundry sand storage tank for recycling according to claim 1, characterized in that a centrifugal fan The dust bag installed on the outlet is a hollow rectangle. The fabric of the dust bag is made of cotton and linen, and the mesh diameter is less than 0.3mm.

8. The foundry sand storage tank for recycling according to claim 1, characterized in that The screen is rectangular and installed on the top of the sand storage tank. The left top of the screen is connected to the bottom of the slag outlet, and the right top of the screen is connected to the top of the right side of the sand storage tank. The connection part is 2-10cm below the opening on the left side of the feed hopper. Meshes with a diameter of 3-5mm are evenly arranged on the screen.

9. A foundry sand storage tank for recycling according to claim 1, characterized in that The vibration motor is cylindrical in shape and is installed on the right side of the bottom of the screen through a bracket.

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