Waste sand conveying device

Abstract

The utility model discloses a waste sand conveying device. The waste sand conveying device comprises a conveying belt, a belt rotating shaft, a dust collection assembly, a discharging box and a discharging opening. The dust collection assembly is located above the discharging opening and the conveying belt and comprises a dust collection pipeline, a vibration piece is arranged in the dust collection pipeline, and the included angle between the vibration piece and the inflow direction is larger than 90 degrees; the edge of the vibrating reed is fixedly connected with the fixing ring, the vibrating reed is a metal elastic sheet, the vibrating reed is initially in a raised state, one surface in contact with airflow is provided with dust collection points, and the other surface is smooth, and the fixing ring is fixedly connected with the inner wall of the dust return pipeline; an unpowered fan is mounted above the vibrating reed, the unpowered fan is fixed above the vibrating reed through a cross rod and a vertical rod which are fixed in the dust return pipeline and is inclined to the pipeline, and a collision rod is mounted on fan blades of the unpowered fan; in the rotating process of the unpowered fan, the protruding part of the vibration piece is intermittently impacted, the vibration piece achieves the vibration effect, and dust is reduced in the waste sand conveying process.

Description

Technical Field

[0001] This application relates to the field of transmission equipment, and in particular to a waste sand transmission device. Background Technology

[0002] In sand casting, the production of steel, iron, and most non-ferrous alloy castings relies on sand casting methods. Because the molding materials used in sand casting are inexpensive and readily available, and mold making is simple, it can adapt to single-piece production, batch production, and mass production, and has long been a fundamental process in casting production. However, after the casting cools and solidifies, vibration during transport separates the molding sand from the casting, resulting in a huge amount of waste sand.

[0003] To achieve efficient recycling of waste sand, processes such as crushing, screening, and high-temperature incineration are used to transform the waste sand into reusable new sand. During this process, waste sand falling onto the conveying device generates dust, which not only pollutes the environment but also harms the health of operators. Utility Model Content

[0004] To address the issue of dust generated when waste sand falls onto the conveying device, which pollutes the environment and harms the health of operators, a waste sand conveying device is provided.

[0005] The above-mentioned objective of this utility model is achieved through the following technical solution:

[0006] A waste sand conveying device includes a conveyor belt, a belt rotating shaft, a dust collection assembly, a discharge box, and a discharge port. The dust collection assembly is located above the discharge port and the conveyor belt. The dust collection assembly includes a dust collection pipe, and a vibrating plate is installed inside the dust collection pipe. The vibrating plate is inclined upward towards the pipe, and the angle between the vibrating plate and the flow direction of the dust collection pipe is greater than 90°. A fixing ring is fixed to the edge of the vibrating plate, and the fixing ring is fixedly connected to the inner wall of the dust collection pipe. A gap is left between the fixing plate and the inner wall of the dust collection pipe, through which airflow can pass. The vibrating plate is an elastic plate, initially in a raised state, and the side in contact with the airflow is not smooth, with a concave surface, while the other side is a smooth curved surface. A non-powered fan is installed downstream of the vibrating plate along the airflow inside the dust collection pipe, and the non-powered fan is inclined to the pipe. A vertical impact bar is installed on the blade of the non-powered fan, and the impact bar intermittently impacts the raised part of the vibrating plate during the rotation of the non-powered fan.

[0007] By adopting the above technical solution, when waste sand falls onto the conveyor belt and generates dust, the fan runs, creating negative pressure in the dust collection pipe. The negative pressure generates suction, causing the dust to enter the dust collection pipe with the airflow. The dust will collide with the vibrating plate. Since there are dust collection points on the side of the vibrating plate that contacts the airflow, some dust will adhere to the dust collection points. Larger dust particles will fall off when they collide with the vibrating plate due to the sudden change in airflow. The vibrating plate will bulge upward due to the suction force of the fan and the force of the airflow.

[0008] The airflow continues upward through the gap between the vibrating plate and the suction pipe. As the airflow passes over the non-powered fan, it drives the fan to rotate. The rotation of the non-powered fan causes the impact rod to rotate, impacting the upward-bulging section. Because the initial state is already bulging and the vibrating plate is a metal elastic sheet, the vibrating plate initially bulges downward. After the impact, the vibrating plate returns to its upward-bulging state due to the airflow and the negative pressure generated by the fan in the pipe. This is how the vibrating plate achieves its vibration effect. The vibration of the vibrating plate causes dust to fall off. Some of it falls into the dust return pipe and returns to the feed hopper, while some slides into the conveyor belt from the edge of the suction pipe inlet. This method reduces the amount of dust released into the air.

[0009] Optionally, side baffles are installed on both sides of the conveyor belt, and the side baffles and the conveyor belt cover the air inlet of the dust collection pipe and the discharge port of the discharge box.

[0010] By adopting the above technical solution, the side baffle can play a certain sealing role, which will prevent dust from splashing out of the conveyor belt and allow the dust to be sucked into the dust collection pipe more fully.

[0011] Optionally, the side panels and the conveyor belt can be detachably connected.

[0012] By adopting the above technical solution, the side baffle can be disassembled and cleaned, and the dust on the side baffle can be removed, thus avoiding excessive accumulation of dust on the side baffle and affecting its dust-blocking effect.

[0013] Optionally, the inlet diameter of the suction duct is smaller than the diameter above the duct inlet.

[0014] By adopting the above technical solution, the inlet diameter of the dust collection pipe is small, the airflow near the inner wall of the pipe is small, and large dust particles can slide out from the inlet near the inner wall of the dust collection pipe.

[0015] Optionally, a dust return pipe is provided below the vibrating plate, and the dust return pipe is located directly below the connection between the fixed ring and the dust collection pipe. The dust return pipe is connected to the dust collection pipe and the material feeding box.

[0016] By adopting the above technical solution, the dust can be impacted by the vibrating plate and fall into the dust return pipe, and then return to the feeding box through the dust return pipe, so that the screened dust can be reused.

[0017] Optionally, the height of the dust return duct inlet is higher than the height of the dust return duct outlet.

[0018] By adopting the above technical solution, the height difference between the inlet and outlet of the dust return pipe is more conducive to the movement of dust inside the dust return pipe.

[0019] Optionally, the connection between the inlet of the dust return duct and the dust collection duct is smooth, and the connection between the outlet of the dust return duct and the discharge box is smooth.

[0020] By adopting the above technical solution, a smooth transition can prevent dust from getting stuck at the connection between the dust return pipe, the dust collection pipe, and the material feeding box.

[0021] Optionally, an auxiliary conveyor wheel is provided below the conveyor belt.

[0022] By adopting the above technical solution, the auxiliary conveyor wheel can support the belt, making the conveying process smoother, avoiding bumps during the conveying process, and reducing dust generation.

[0023] In summary, this application has at least the following beneficial effects:

[0024] During waste sand transport, the generated dust is absorbed by the suction pipe and adheres to the vibrating plate. The fan blades drive the impact rod to rotate and strike the vibrating plate at intervals. The impact at intervals and the airflow generate vibration, causing the dust to fall, thus filtering the dust in the airflow and preventing it from entering the air and polluting the environment, which could harm the operators. Attached image description:

[0025] Figure 1 This is a schematic diagram of a waste sand conveying device;

[0026] Figure 2 A schematic diagram of the conveying component structure of a waste sand conveying device;

[0027] Figure 3 This is a schematic diagram of the connection between the conveyor belt and the side baffle.

[0028] Figure 4 This is a schematic diagram of the dust collection component structure of a waste sand conveying device;

[0029] Figure 5 This is a schematic diagram of the internal structure of a vacuum suction pipe;

[0030] Figure 6 This is a schematic diagram of a vibrating plate.

[0031] Figure label:

[0032] 1. Bracket; 2. Conveying assembly; 21. Conveyor belt; 22. Belt drive shaft; 23. Auxiliary conveyor wheel; 24. Auxiliary shaft; 25. Mounting rod; 26. Mounting plate; 3. Dust collection assembly; 31. Dust collection duct; 311. Dust collection inlet; 312. Dust collection outlet; 32. Dust return duct; 321. Dust return inlet; 322. Dust return outlet; 33. Horizontal bar; 34. Vertical bar; 35. Non-powered fan; 351. Fan blade; 352. Hollow cylinder; 36. Impact bar; 37. Limiting plate; 38. Vibrating plate; 381. Dust collection point; 39. Fixing ring; 4. Feed box; 5. Feed port; 6. Side baffle; 61. Mounting groove. Detailed Implementation

[0033] like Figure 1 As shown, a waste sand conveying device includes a support 1, a conveying assembly 2, a dust collection assembly 3, a discharge box 4, and a discharge port 5.

[0034] The discharge port 5 is located directly below the discharge box 4, and the discharge port 5 is fixedly connected to the discharge box 4.

[0035] like Figure 1 , Figure 2 and Figure 3 As shown, the conveying assembly 2 includes a conveyor belt 21, a belt drive shaft 22, an auxiliary conveyor wheel 23, and an auxiliary shaft 24.

[0036] There are two belt drive shafts 22, located at both ends above the bracket 1, and both are rotatably connected to the bracket 1.

[0037] The conveyor belt 21 is located above the support 1 and is inclined to the horizontal plane. The conveyor belt 21 tightly surrounds the two belt drive shafts 22. The conveyor belt 21 is connected to the belt drive shafts 22 for transmission. The rotation of the belt drive shafts 22 drives the conveyor belt 21 to rotate.

[0038] The auxiliary shaft 24 is located above the support 1 and inside the conveyor belt 21. There are 5 auxiliary shafts 24. The auxiliary shafts 24 are parallel to each other and are all fixedly connected to the support 1. The distance between any two adjacent auxiliary shafts 24 is equal.

[0039] The auxiliary conveyor wheel 23 is located above the support 1 and inside the conveyor belt 21. There are 10 auxiliary conveyor wheels 23. Two auxiliary conveyor wheels 23 are sleeved on an auxiliary shaft 24 and are rotatably connected to the auxiliary shaft 24.

[0040] Mounting rod 25 is located above auxiliary shaft 24. There are 4 mounting rods 25. Two of the mounting rods 25 are fixedly connected to the two ends of the second auxiliary shaft 24 on the left. The remaining mounting rod 25 is fixedly connected to the two ends of the third auxiliary shaft 24 on the left.

[0041] Mounting plate 26 is located above mounting rod 25. There are two mounting plates 26, which are fixedly connected to two mounting rods 25 located on the same side of auxiliary shaft 24.

[0042] Two side baffles 6 are provided between the two mounting plates 26, located on both sides of the conveyor belt 21 respectively. The side baffles 6 are detachably connected to the mounting plates 26 respectively. A mounting groove 6 is provided at the connection between the side baffles 6 and the conveyor belt 21. The conveyor belt 21 is inserted into the mounting groove 6 to achieve embedded connection with the side baffles 6.

[0043] like Figure 1 and Figure 4 As shown, the dust collection assembly 3 includes a dust collection pipe 31 and a dust return pipe 32.

[0044] The suction duct 31 is located between the two side baffles 6 and above the conveyor belt 21.

[0045] The dust suction pipe 31 is inclined, with its lower end bent toward the upper surface of the conveyor belt 21. The opening below the dust suction pipe 31 is the dust suction inlet 311, through which airflow enters. The dust suction inlet 311 is frustum-shaped. The opening above the dust suction pipe 31 is the dust suction outlet 312, through which airflow exits.

[0046] The dust return pipe 32 is located between the feeding box 4 and the dust suction pipe 31. The dust return pipe 32 is inclined to the horizontal plane. The dust return pipe 32 is fixedly connected to the dust suction pipe 31 and the connection is smoothly transitioned.

[0047] The dust return pipe 32 is fixedly connected to the material discharge box 4, and the connection is smoothly transitioned.

[0048] The connection between the dust return pipe 32 and the dust collection pipe 31 is the dust return inlet 321, and the connection between the dust return pipe 32 and the material discharge box 4 is the dust return outlet 322. The dust return inlet 321 is higher than the dust return outlet 322.

[0049] like Figure 4 and Figure 5 As shown, the vacuuming assembly 3 also includes a vibrating plate 38, a horizontal bar 33, a vertical bar 34, a non-powered fan 35, a striking bar 36, a limiting plate 37, and a retaining ring 39, all of which are located inside the vacuuming pipe 31.

[0050] The crossbar 33 is fixedly connected to the inner wall of the suction pipe 31.

[0051] The vertical rod 34 is located below the horizontal rod 33 and is fixedly connected to the horizontal rod 33. The vertical rod 34 is cylindrical.

[0052] The non-powered fan 35 is located below the vertical rod 34. The non-powered fan 35 mainly consists of a hollow cylinder 352 and fan blades 351 fixed on the hollow cylinder 352. The vertical rod 34 passes through the hollow cylinder 352 in the middle of the non-powered fan 35 and is rotatably connected to the hollow cylinder 352 in the middle of the non-powered fan 35. The vertical rod 34 serves as the pivot of the non-powered fan 35.

[0053] There are two limiting pieces 37, which are fixedly connected to the vertical rod 34 and are located on the upper and lower sides of the connection between the vertical rod 34 and the non-powered fan 35, respectively. The limiting pieces 37 are larger than the holes between the hollow cylinders 352.

[0054] The strike bar 36 is located below the fan blade 351 of the unpowered fan 35 and is fixedly connected to the fan blade 351.

[0055] The retaining ring 39 is located below the impact bar 36 and is fixedly connected to the inner wall of the suction pipe 31.

[0056] The vibrating plate 38 is located below the impact rod 36, and the edge of the vibrating plate 38 is fixedly connected to the fixing ring 39. After the vibrating plate 38 and the fixing ring 39 are connected, there is a gap between the whole and the dust collection pipe 31, and the airflow can pass through the gap. The vibrating plate 38 is a metal elastic plate.

[0057] The vibrating plate 38 has a recessed dust suction point 381 on the side that contacts the airflow, while the other side is smooth. The vibrating plate 38 is initially raised. As the impact rod 36 rotates with the non-powered fan 35, it will only impact the raised part of the vibrating plate 38, causing the vibrating plate 38 to rise downward.

[0058] After the dust is impacted by the airflow at the suction point 381, some of it will adhere to the suction point 381.

[0059] The workflow of this utility model is as follows:

[0060] Waste sand is fed into the conveyor belt 21 from the discharge port 5 in the feed box 4. The motor drives the belt drive shaft 22 to rotate, which in turn drives the conveyor belt 21 to rotate. As there is a speed difference and a height difference between the waste sand and the conveyor belt 21 when the waste sand enters the conveyor belt 21, dust will be generated.

[0061] The fan generates suction, creating airflow in the suction duct 31, which carries dust upwards. The dust impacts the vibrating plate 38. Since there are suction points 381 on the side of the vibrating plate 38 that are in contact with the airflow, the dust adheres to the suction points 381. Larger dust particles impacting the vibrating plate 38 will fall off due to the sudden change in airflow.

[0062] The vibrating plate 38 is subjected to the suction force of the fan and the force of the airflow, causing it to bulge upwards. The airflow continues upwards through the gap between the vibrating plate 38 and the suction pipe 31. When the airflow passes through the non-powered fan 35, it drives the non-powered fan 35 to rotate. The rotation of the non-powered fan 35 drives the rotation of the impact rod 36, which impacts the upward bulge. Since the initial state is a bulging state, the vibrating plate 38 will bulge downwards. After the impact of the impact rod 36, the vibrating plate 38 receives the airflow and the negative pressure in the suction pipe 31 and returns to the upward bulging state. The vibrating plate 38 achieves the vibration effect in this way.

[0063] The vibration of the vibrating plate 38 causes the dust on the vibrating plate 38 to fall off. Some of the dust falls into the dust return pipe 32 and then back to the feed box 4, while some slides into the conveyor belt 21 from the edge inlet of the dust suction pipe 31. The side baffles 6 located on both sides of the conveyor belt 21 reduce the amount of waste sand that splashes outside the conveyor belt 21 when it falls in, thereby reducing the amount of dust entering the air.

[0064] This specific embodiment is merely an explanation of the present invention and is not intended to limit the present invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of protection claimed by the present invention, they are protected by patent law.

Claims

1. A waste sand conveying device, comprising a conveyor belt (21), a belt drive shaft (22), a dust collection assembly (3), a feeding box (4), and a feeding port (5), characterized in that, The dust collection assembly (3) is located above the discharge port (5) and the conveyor belt (21); the dust collection assembly (3) includes a dust collection pipe (31), and a vibrating plate (38) is provided inside the dust collection pipe (31); the vibrating plate (38) is inclined upward towards the dust collection pipe (31), and the angle between the vibrating plate (38) and the flow direction of the dust collection pipe (31) is greater than 90°; a fixing ring (39) is fixed to the edge of the vibrating plate (38), and the fixing ring (39) is fixedly connected to the inner wall of the dust collection pipe (31), with a gap between the fixing ring (39) and the inner wall of the dust collection pipe (31) for air... The flow can pass through the gap; the vibrating plate (38) is an elastic plate, initially in a raised state, and the side in contact with the airflow is not smooth, with dust collection points (381) on the surface, while the other side is a smooth curved surface; a non-powered fan (35) is installed in the dust collection pipe (31) downstream of the vibrating plate (38) along the airflow. The non-powered fan (35) is inclined to the dust collection pipe (31), and a vertical impact bar (36) is installed on the blade of the non-powered fan (35). The impact bar (36) intermittently impacts the raised part of the vibrating plate (38) during the rotation of the non-powered fan (35).

2. The waste sand conveying device according to claim 1, characterized in that, Side baffles (6) are installed on both sides of the conveyor belt (21), and the side baffles (6) and the conveyor belt (21) cover the air inlet and discharge port (5) of the dust collection pipe (31).

3. The waste sand conveying device according to claim 2, characterized in that, The side baffle (6) and the conveyor belt (21) are detachably connected.

4. The waste sand conveying device according to claim 1, characterized in that, The inlet diameter of the suction pipe (31) is smaller than the diameter above the inlet of the suction pipe (31).

5. A waste sand conveying device according to claim 1, characterized in that, A dust return pipe (32) is provided below the vibrating plate (38), and the dust return pipe (32) is located below the connection between the fixed ring (39) and the dust suction pipe (31). The dust return pipe (32) is connected to the dust suction pipe (31) and the dust return pipe (32) is connected to the feeding box (4).

6. A waste sand conveying device according to claim 5, characterized in that, The height of the inlet of the dust return pipe (32) is higher than the height of the outlet of the dust return pipe (32).

7. A waste sand conveying device according to claim 5, characterized in that, The inlet of the dust return pipe (32) and the dust suction pipe (31) are connected smoothly, and the outlet of the dust return pipe (32) and the material box (4) are connected smoothly.

8. A waste sand conveying device according to claim 1, characterized in that, An auxiliary conveyor wheel (23) is provided below the conveyor belt (21).

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