A screw auger for conveying perlite ore

Abstract

This utility model relates to a spiral auger for conveying perlite ore. This utility model effectively solves the problems of traditional spiral augers causing ore to be easily crushed by compression and shearing, and prone to adhesion and blockage, thus affecting conveying. This spiral auger for conveying perlite ore effectively prevents ore from entering the gap between the spiral shaft and the conveying pipe through a spiral conveying mechanism, thereby significantly reducing the ore breakage rate and increasing the yield of expanded perlite. The vibrating motor and anti-blocking mechanism work together to vibrate the damp ore at the feed pipe at high frequency while blowing high-pressure hot air onto the damp ore, drying the ore and pushing it to the spiral shaft. This breaks down the adhesion between the ore particles, preventing blockage and affecting conveying efficiency. The drying mechanism continuously dries the ore in the conveying pipe, reducing its moisture content and improving its flowability within the pipe, thus facilitating conveying and effectively reducing energy consumption, making it more convenient for conveying ore.

Description

Technical Field

[0001] This utility model belongs to the technical field of mineral sand conveying devices, specifically relating to a spiral auger for conveying perlite ore. Background Technology

[0002] Expanded perlite is a natural acidic glassy volcanic lava, a non-metallic mineral, encompassing perlite, pitchstone, and obsidian, differing only in their water of crystallization content. Because its volume expands rapidly by 4 to 30 times under high-temperature conditions of 1000–1300℃, it is collectively referred to as expanded perlite. It can be used as a filter, catalyst, molecular sieve, and carrier for rubber, fertilizers, and pesticides, and is widely used in construction, metallurgy, petroleum, machinery, light industry, hydropower, casting, pharmaceuticals, food, agriculture, forestry, and horticulture.

[0003] Perlite ore, as the core raw material of expanded perlite, has a high breakage rate during transportation due to its physical properties (porous, low density, brittle) and high hygroscopicity. In traditional spiral augers, the gap between the spiral shaft and the pipe wall easily causes the ore to be squeezed and sheared, resulting in increased particle size defects in subsequent expansion processes. Furthermore, damp ore is prone to sticking together and can easily become clogged after accumulating at the feed inlet, requiring manual intervention to clear blockages, which affects the conveying efficiency of the ore. At the same time, existing conveying equipment relies solely on pre-drying. When the ore absorbs moisture and clumps again during transportation, it increases the torque of the spiral shaft, significantly increasing energy consumption. Moreover, the ore tends to adhere to the spiral shaft, affecting the conveying effect. Utility Model Content

[0004] To address the above issues and overcome the shortcomings of existing technologies, this utility model provides a spiral auger for conveying perlite ore. This spiral auger significantly reduces the ore breakage rate and increases the yield of expanded perlite. The vibrating motor and anti-blocking mechanism work together to break the adhesion between the ore particles, preventing blockage at the feed pipe and thus affecting conveying efficiency. The drying mechanism continuously dries the ore particles in the conveying pipe, reducing their moisture content and improving their flowability within the pipe. This facilitates conveying, effectively reduces energy consumption, and is more suitable for long-term ore conveying.

[0005] A spiral auger for conveying perlite ore includes a support frame and a conveying pipe. A feed pipe is fixedly connected to one side of the upper surface of the conveying pipe, and a feed hopper is fixedly installed at the top of the feed pipe. A vibrating motor for high-frequency vibration is fixedly installed on the side of the feed hopper. A discharge pipe for discharging ore is fixedly connected to the lower surface of the conveying pipe away from the feed pipe. The conveying pipe is equipped with a spiral conveying mechanism for conveying ore. An anti-blocking mechanism to prevent blockage at the feed pipe is provided inside the conveying pipe near the feed pipe. A drying mechanism for heating and drying the ore is provided outside the conveying pipe.

[0006] Preferably, the spiral conveying mechanism includes a drive motor, a spiral shaft, and an outer sealing layer. The drive motor is fixedly installed at the end of the conveying pipe and its output end is connected to the spiral shaft via a spline. The spiral shaft is horizontally rotatably connected inside the conveying pipe, and the end of the spiral shaft away from the drive motor is rotatably connected to the axis of the conveying pipe away from the drive motor via a bearing. The outer sealing layer is embedded in the outer edge of the spiral shaft and fits against the inner surface of the conveying pipe.

[0007] Preferably, the anti-clogging mechanism includes an inclined porous vent plate, a high-pressure hot air blower, and a blower head. The inclined porous vent plate is obliquely fixedly connected to one end of the conveying pipe near the feed pipe. The spiral shaft passes through the center of the inclined porous vent plate, and the outer edge of the inclined porous vent plate is fixedly connected to the inner surface of the conveying pipe, thereby forming a hot air chamber in the area inside the conveying pipe near the obliquely lower part of the inclined porous vent plate. The side of the inclined porous vent plate has multiple horizontally penetrating vent holes.

[0008] Preferably, the high-pressure hot air blower is fixedly installed on the upper surface of the support frame near the feed pipe, and the high-pressure hot air blower is located below the conveying pipe. The blower head is connected to the air outlet of the high-pressure hot air blower and passes through the hot air cavity inside the conveying pipe.

[0009] Preferably, the drying mechanism consists of multiple sets of connecting blocks and heating rings. The heating rings are fixedly connected to the connecting blocks, and the connecting blocks are fixedly installed on the upper surface of the conveying pipe. The heating rings are sleeved on the outside of the conveying pipe and fit against the outer surface of the conveying pipe. Multiple sets of connecting blocks and heating rings are fixedly installed at equal intervals on the outside of the conveying pipe, and multiple sets of connecting blocks and heating rings are all arranged between the feed pipe and the discharge pipe.

[0010] Preferably, the outer sealing layer is dynamically adhered to the inner wall of the conveying pipe by centrifugal force and ore pressure, thereby preventing ore from entering the gap between the spiral shaft and the conveying pipe.

[0011] The beneficial effects of the above technical solution are as follows:

[0012] This spiral auger for conveying perlite ore utilizes a vibrating motor, a spiral conveying mechanism, an anti-clogging mechanism, and a drying mechanism. The spiral conveying mechanism effectively prevents ore from entering the gap between the spiral shaft and the conveying pipe, significantly reducing the ore breakage rate and increasing the yield of expanded perlite. The vibrating motor and the anti-clogging mechanism work together, simultaneously vibrating the damp ore at the feed hopper and feed pipe at high frequency while the anti-clogging mechanism blows high-pressure hot air onto the damp ore, drying it and pushing it towards the spiral shaft. This breaks down the adhesion between the ore particles, preventing blockage at the feed pipe and ensuring efficient conveying. The drying mechanism continuously dries the ore in the conveying pipe, reducing its moisture content and improving its flowability, thus facilitating transport, reducing energy consumption, and making it suitable for long-term ore conveying. Attached Figure Description

[0013] Figure 1 This is a frontal cross-sectional view of the present invention;

[0014] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 3 This is a schematic diagram showing the drying mechanism and feed hopper of this utility model in disassembled state;

[0016] Figure 4 This is a schematic diagram of the spiral conveying mechanism of this utility model.

[0017] In the diagram: 1. Support frame; 2. Conveying pipe; 3. Feeding pipe; 4. Feeding hopper; 5. Vibrating motor; 6. Discharge pipe; 7. Drive motor; 8. Spiral shaft; 9. Outer sealing layer; 10. Inclined perforated vent plate; 11. High-pressure hot air blower; 12. Air blower head; 13. Connecting block; 14. Heating ring. Detailed Implementation

[0018] The foregoing and other technical contents, features and effects of this utility model are described in conjunction with the appendix below. Figures 1 to 4 The embodiments are described in detail below.

[0019] This embodiment provides a spiral auger for conveying perlite ore, as shown in the attached figure. Figure 1-4 As shown, the device includes a support frame 1 and a conveying pipe 2. The conveying pipe 2 is horizontally fixedly installed on the top of the support frame 1. A feed pipe 3 is fixedly connected to one side of the upper surface of the conveying pipe 2, and a feed hopper 4 for injecting ore into the feed pipe 3 is fixedly installed on the top of the feed pipe 3 by bolts. A vibration motor 5 is fixedly installed on the side of the feed hopper 4. The vibration motor 5 can vibrate the feed hopper 4 at high frequency, which facilitates the downward vibration of the ore raw materials inside the feed hopper 4 and the feed pipe 3, preventing the ore raw materials from adhering to each other due to moisture, and ensuring that the ore can smoothly enter the conveying pipe 2 below.

[0020] A discharge pipe 6 for discharging ore raw materials is fixedly connected to the lower surface of the conveying pipe 2 away from the feed pipe 3. The outlet of the discharge pipe 6 is set downwards. A screw conveying mechanism for conveying ore and reducing the crushing rate of ore is set at the end of the conveying pipe 2 near the feed pipe 3. The screw conveying mechanism includes a drive motor 7, a screw shaft 8, and an outer sealing layer 9. The drive motor 7 is fixedly installed at the end of the conveying pipe 2 and its output end is connected to the screw shaft 8 through a spline. The screw shaft 8 is horizontally rotatably connected inside the conveying pipe 2, and the end of the screw shaft 8 away from the drive motor 7 is rotatably connected to the axis of the conveying pipe 2 away from the drive motor 7 through a bearing. The outer sealing layer 9 is embedded in the outer edge of the screw shaft 8 and fits against the inner surface of the conveying pipe 2. The material of the outer sealing layer 9 is a wear-resistant, temperature-resistant, and highly elastic special polymer. Material (such as high-performance polyurethane, engineering plastics, or composite materials); During the rotation of the spiral shaft 8, the outer sealing layer 9, under the action of centrifugal force and ore pressure, always adheres tightly to the inner wall of the conveying pipe 2, forming a dynamic seal. This prevents ore from being trapped between the outer edge of the spiral shaft 8 and the inner surface of the conveying pipe 2 and from breaking as the spiral shaft 8 rotates, effectively reducing the breakage rate of the ore and ensuring that the ore has good physical properties. At the same time, it also reduces the amount of ore leaking from the gap between the spiral shaft 8 and the conveying pipe 2 when conveying ore, thereby improving the conveying efficiency of the ore. The drive motor 7 drives the spiral shaft 8 to rotate, which can continuously convey the ore injected into the feed pipe 3 to one end of the discharge pipe 6. The ore conveyed to the discharge pipe 6 will be discharged downward from the discharge pipe 6, thus entering the next station.

[0021] An anti-clogging mechanism is provided inside the conveying pipe 2 near the feed pipe 3 to prevent ore sand from clogging the feed pipe 3. The anti-clogging mechanism includes an inclined porous vent plate 10, a high-pressure hot air blower 11, and a blower head 12. The inclined porous vent plate 10 is obliquely fixedly connected to the inside of the conveying pipe 2 near the feed pipe 3. The spiral shaft 8 passes through the center of the inclined porous vent plate 10, and the outer edge of the inclined porous vent plate 10 is fixedly connected to the inner surface of the conveying pipe 2, so that a hot air chamber is formed in the area inside the conveying pipe 2 near the inclined porous vent plate 10. Multiple horizontally penetrating vent holes are opened on the side of the inclined porous vent plate 10, and the diameter of these vent holes is smaller than the diameter of the ore sand to prevent the ore sand from entering the hot air chamber through the vent holes; high-pressure hot air. The machine 11 is fixedly installed on the upper surface of the support frame 1 near the feed pipe 3. The high-pressure hot air blower 11 is located below the conveying pipe 2. The blower head 12 is connected to the air outlet of the high-pressure hot air blower 11 and passes through the hot air cavity inside the conveying pipe 2. When the high-pressure hot air blower 11 is running, it can blow high-pressure hot air from the blower head 12 into the hot air cavity. The hot air passes through the air holes on the side of the inclined porous air plate 10 and penetrates into the ore sand entering the conveying pipe 2 from the feed pipe 3. This can dry the wet ore sand entering the conveying pipe 2 and blow the ore sand onto the spiral shaft 8. This can prevent the ore sand from sticking together and clogging the feed pipe 3. With the cooperation of the vibration motor 5, it can more effectively prevent the ore sand from clogging at the feed end, ensure continuous and stable feeding, and improve the conveying efficiency.

[0022] The conveying pipe 2 is equipped with a drying mechanism for further drying the ore. The drying mechanism consists of multiple sets of connecting blocks 13 and heating rings 14. The heating rings 14 are fixedly connected to the connecting blocks 13, and the connecting blocks 13 are fixedly installed on the upper surface of the conveying pipe 2. The heating rings 14 are sleeved on the outside of the conveying pipe 2. They can be electrically connected to an external control unit and circuit through the connecting blocks 13. Multiple sets of connecting blocks 13 and heating rings 14 are fixedly installed at equal intervals on the outside of the conveying pipe 2. The multiple sets of connecting blocks 13 and heating rings 14 are all located between the feed pipe 3 and the discharge pipe 6. The external control unit can control the heating rings 14 to heat up to a specific temperature, so that the heating rings 14 heat and dry the ore being conveyed in the conveying pipe 2. This prevents the ore from sticking to each other or adhering to the spiral shaft 8 and the inner surface of the conveying pipe 2 due to moisture, improves the fluidity of the ore, reduces the resistance during ore conveying, and thus improves the conveying efficiency of the ore and effectively reduces energy consumption.

[0023] Vibration motor 5, drive motor 7, high-pressure hot air blower 11 and heating ring 14 are all electrically connected to the external control unit and are electrically connected to the external circuit through wires. These structures are all existing known technologies, so they will not be described in detail here.

[0024] In summary, the operating steps for this auger used to transport perlite ore are as follows:

[0025] 1. Start multiple sets of heating rings 14 and simultaneously turn on the high-pressure hot air blower 11. Adjust the heating temperature of the heating rings 14 and the air outlet temperature of the high-pressure hot air blower 11 through the external control unit to preheat the delivery pipe 2.

[0026] 2. Then, the ore sand is continuously injected into the feed hopper 4, and the vibration motor 5 is started simultaneously. The vibration motor 5 can vibrate the ore sand entering the feed hopper 4 at high frequency. At the same time, the hot air blown out by the high-pressure hot air blower 11 through the blower head 12 can blow the hot air from the ventilation holes on the side of the inclined porous ventilation plate 10 onto the ore sand, thereby drying the ore sand and pushing the ore sand to one side of the spiral shaft 8, thus promoting the conveying efficiency.

[0027] 3. When the ore enters the feed pipe 3, the drive motor 7 runs and drives the spiral shaft 8 to rotate, conveying the ore to the discharge pipe 6. The heating ring 14 continuously heats and dries the ore in the conveying pipe 2, which can effectively improve the fluidity of the ore, facilitate conveying, and reduce energy consumption.

[0028] The above description is only for illustrating the present utility model. It should be understood that the present utility model is not limited to the above embodiments, and various modifications that conform to the concept of the present utility model are within the protection scope of the present utility model.

Claims

1. A screw auger for transporting perlite ore sand, comprising a support frame (1) and a conveying pipe (2), characterized in that: The upper surface of the conveying pipe (2) is fixedly connected with a feeding pipe (3), and the top of the feeding pipe (3) is fixedly installed with a feeding hopper (4); the side surface of the feeding hopper (4) is fixedly installed with a vibrating motor (5) capable of vibrating the feeding hopper (4) at high frequency; the lower surface of the conveying pipe (2) is fixedly connected with a discharging pipe (6) for discharging the mineral sand away from the feeding pipe (3); the inside of the conveying pipe (2) is provided with a screw conveying mechanism for conveying the mineral sand; the inside of the conveying pipe (2) is provided, close to the feeding pipe (3), with an anti-blocking mechanism capable of preventing the feeding pipe (3) from being blocked; and the outside of the conveying pipe (2) is provided with a drying mechanism capable of drying and heating the mineral sand.

2. A screw auger for conveying perlite ore sand according to claim 1, characterized in that: The screw conveying mechanism comprises a driving motor (7), a screw rotating shaft (8) and an outer sealing layer (9); the driving motor (7) is fixedly installed at the end of the conveying pipe (2) and connected with the screw rotating shaft (8) through a spline at the output end; the screw rotating shaft (8) is horizontally rotatably connected in the inside of the conveying pipe (2), and one end of the screw rotating shaft (8) away from the driving motor (7) is rotatably connected with the shaft center of the end of the conveying pipe (2) away from the driving motor (7) through a bearing; and the outer sealing layer (9) is embedded on the outer edge of the screw rotating shaft (8) and attached to the inner surface of the conveying pipe (2).

3. A screw auger for conveying perlite ore sand according to claim 2, characterised in that: The anti-blocking mechanism comprises an inclined porous air-permeable plate (10), a high-pressure hot air blower (11) and a blowing pipe head (12); the inclined porous air-permeable plate (10) is fixedly connected at one end in the inside of the conveying pipe (2) close to the feeding pipe (3); the screw rotating shaft (8) is arranged at the center of the inclined porous air-permeable plate (10); the outer edge of the inclined porous air-permeable plate (10) is fixedly connected with the inner surface of the conveying pipe (2) so as to form a hot air chamber in the area of the inside of the conveying pipe (2) close to the lower side of the inclined porous air-permeable plate (10); and a plurality of horizontal through holes are formed in the side surface of the inclined porous air-permeable plate (10).

4. A screw auger for conveying perlite ore sand according to claim 3, characterized in that: The high-pressure hot air blower (11) is fixedly installed on the upper surface of the support frame (1) close to the feeding pipe (3), and the high-pressure hot air blower (11) is arranged below the conveying pipe (2); and the blowing pipe head (12) is communicated with the air outlet end of the high-pressure hot air blower (11) and arranged in the hot air chamber in the inside of the conveying pipe (2).

5. A screw auger for conveying perlite ore sand as claimed in claim 1, wherein: The drying mechanism comprises a plurality of connecting blocks (13) and heating rings (14); the heating rings (14) are fixedly connected with the connecting blocks (13), and the connecting blocks (13) are fixedly installed on the upper surface of the conveying pipe (2); the heating rings (14) are sleeved on the outside of the conveying pipe (2) and attached to the outer surface of the conveying pipe (2); a plurality of the connecting blocks (13) and the heating rings (14) are equidistantly fixedly installed on the outside of the conveying pipe (2), and the plurality of the connecting blocks (13) and the heating rings (14) are arranged between the feeding pipe (3) and the discharging pipe (6).

6. A screw auger for conveying perlite ore sand as claimed in claim 2, wherein: The outer sealing layer (9) is dynamically attached to the inner wall of the conveying pipe (2) by centrifugal force and mineral sand pressure so as to prevent the mineral sand from entering the gap between the screw rotating shaft (8) and the conveying pipe (2).

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