An automatic separation and collection device for heavy debris in pneumatic conveying systems

Abstract

This utility model discloses an automatic separation and collection device for heavy debris in an airflow conveying system, relating to the technical field of airflow separation equipment. The separation body includes a cylindrical cavity with a conical guide hood at the top. A spiral feed plate is located between the outer side of the guide hood and the inner wall of the cavity. A feed pipe is located on one side of the upper part of the cavity, a discharge pipe is located at the top of the cavity, and a discharge port is located at the bottom of the cavity. Corn fibers, being lightweight and highly susceptible to airflow, move upwards more easily with the airflow, while heavy debris, due to gravity and centrifugal force, tends to sink closer to the inner wall of the cavity, significantly improving the initial separation efficiency and reducing the mutual entanglement of corn fibers and heavy debris.

Description

Technical Field

[0001] This utility model relates to the technical field of airflow separation equipment, specifically to an automatic separation and collection device for heavy debris in an airflow conveying system. Background Technology

[0002] During the pneumatic conveying of corn fiber, heavy metal impurities (such as screws detached from the tube bundle in the previous process) often get mixed into the pipeline. These impurities can easily cause damage when they enter downstream equipment (such as airlocks and pulverizers) with the airflow. In the existing technology, cyclone separators are mainly used to separate powders of different densities, but their structure is not optimized for the separation of "light fibers + heavy impurities of specific sizes". This may result in some corn fiber being carried into the slag bin or heavy impurities escaping with the airflow, leading to poor separation effect. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an automatic separation and collection device for heavy debris in an air conveying system, which has a good separation effect on corn fiber and heavy debris, in order to address the shortcomings of the existing technology.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0005] An automatic separation and collection device for heavy debris in an air conveying system includes a separation body, the separation body including a cylindrical cavity, the top of the cavity being provided with a conical guide shroud, and a spiral feed plate being provided between the outer side of the guide shroud and the inner wall of the cavity;

[0006] A feed pipe is provided on the upper side of the cavity, a discharge pipe is provided on the top of the cavity, and a discharge port is provided at the bottom of the cavity.

[0007] As an improved technical solution, the feed pipe is arranged along the tangential direction of the inner wall of the cavity, and the angle between the feed pipe and the axis of the cavity is 30 to 45°.

[0008] As an improved technical solution, the cone angle of the deflector is 50-60°.

[0009] As an improved technical solution, the diameter of the cavity is 100-150cm, the height is 1-2m, the distance between the bottom edge of the flow guide and the cavity is 5-8cm, the diameter of the discharge port is 18-20cm, the diameter of the discharge pipe is 25-30cm, and the diameter of the feed pipe is 25-30cm.

[0010] As an improved technical solution, the bottom of the discharge port is connected to a funnel-shaped slag collection hopper, the volume of which is 50-100L.

[0011] As an improved technical solution, a metal detector is provided on the inner side of the feed pipe, and the metal detector is electrically connected to the control system.

[0012] As a preferred technical solution, the bottom of the slag collection hopper is provided with a pneumatic valve, which is electrically connected to the control system.

[0013] As a preferred technical solution, an infrared sensor is provided on the upper part of the slag collection hopper, and the pneumatic valve and the infrared sensor are interlocked to the control system.

[0014] Due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0015] This invention relates to an automatic separation and collection device for heavy debris in an airflow conveying system. The device includes a separation body comprising a cylindrical cavity. A conical guide hood is located at the top of the cavity, and a spiral feed plate is positioned between the outer side of the guide hood and the inner wall of the cavity. A feed pipe is located on one side of the upper part of the cavity, a discharge pipe is located at the top of the cavity, and a discharge port is located at the bottom of the cavity. The cylindrical cavity provides a stable space for separating corn fiber from heavy debris. The conical guide hood guides the airflow upwards, while the spiral feed plate causes the mixture of corn fiber and debris to move along a spiral path, extending the separation time. During this process, the corn fiber, being lightweight and highly susceptible to airflow, moves upwards more easily, while the heavy debris, due to gravity and centrifugal force, sinks closer to the inner wall of the cavity, significantly improving the initial separation efficiency and reducing the mutual entanglement of corn fiber and heavy debris.

[0016] The feed pipe of this invention is arranged tangentially to the inner wall of the cavity, with an angle of 30-45° between the feed pipe and the axis of the cavity. The tangential arrangement allows the mixture of corn fiber and heavy impurities to form a rotating airflow upon entering the cavity, generating strong centrifugal force. The 30-45° angle balances the axial upward force and radial rotational force of the material. Due to its high density, the heavy impurities are more easily thrown towards the inner wall of the cavity and sink along it under centrifugal force, while the corn fiber, being lightweight and more affected by air resistance, can move axially upward with the rotating airflow, effectively enhancing the separation of the two and preventing heavy impurities from entering the discharge pipe along with the corn fiber.

[0017] The cone angle of the guide shroud is 50–60°. This 50–60° cone angle design creates a suitable airflow guiding channel, preventing both excessively small cone angles that would cause the airflow to rise too quickly and entrain heavy debris, and excessively large cone angles that would create vortices at the top and interfere with the smooth transport of corn fibers. This angle allows the corn fibers to smoothly gather upwards along the surface of the guide shroud under the influence of airflow and enter the discharge pipe, while simultaneously preventing heavy debris (especially particles moving close to the inner wall) from entering the upper discharge area, further improving separation accuracy.

[0018] The cavity has a diameter of 100-150cm and a height of 1-2m. The distance between the bottom edge of the flow guide and the cavity is 5-8cm. The diameter of the discharge port is 18-20cm, the diameter of the discharge pipe is 25-30cm, and the diameter of the inlet pipe is 25-30cm. The cavity's diameter of 100-150cm and height of 1-2m provide ample separation space for corn fiber and heavy impurities, preventing material congestion. The 5-8cm distance between the bottom edge of the flow guide and the cavity ensures smooth passage of corn fiber with the airflow and enhances the local airflow velocity through the narrow gap, preventing heavy impurities from getting stuck. The matching diameters of the discharge port and the inlet / outlet pipes (discharge port 18-20cm, inlet / outlet pipes 25-30cm) ensure that heavy impurities can be smoothly discharged from the discharge port while meeting the flow rate requirements for efficient transport of corn fiber in the airflow, avoiding pipe blockage, and ensuring the continuity and stability of the separation process.

[0019] The bottom of the discharge port is connected to a funnel-shaped slag collection hopper with a volume of 50-100L. The funnel-shaped structure guides the separated heavy impurities to quickly gather and fall into the slag collection hopper, preventing impurities from accumulating and clogging the discharge port. The 50-100L volume can temporarily store a certain amount of heavy impurities, reducing the frequency of cleaning and extending the continuous operation time of the equipment. At the same time, it prevents heavy impurities from flowing back into the cavity due to excessive accumulation, which would affect the purity of the corn fiber.

[0020] A metal detector is installed inside the feed pipe and is electrically connected to the control system. The metal detector can detect metal impurities (such as nails, iron filings, etc.) before the corn fiber and heavy debris enter the separation unit and transmit the signal to the control system. The control system can determine the amount collected based on the number of warnings and issue timely warnings or trigger subsequent processing mechanisms (such as suspending feed). Manual intervention is possible, or automatic control of slag discharge can be implemented as needed. This prevents metal impurities from mixing into the corn fiber, ensuring the quality and safety of the corn fiber and reducing the risk of equipment failure during subsequent processing.

[0021] The bottom of the slag collection hopper is equipped with a pneumatic valve, which is electrically connected to the control system. The pneumatic valve is remotely controlled by the control system, eliminating the need for manual operation. When heavy impurities accumulate to a certain amount in the slag collection hopper, the control system automatically opens to discharge slag, avoiding downtime during manual cleaning and improving separation efficiency. Simultaneously, the pneumatic valve has good sealing performance, preventing airflow leakage from the discharge port during separation, ensuring stable air pressure inside the chamber, and ensuring that corn fibers are separated from heavy impurities under stable airflow, reducing the decrease in separation effect caused by air pressure fluctuations.

[0022] An infrared sensor is installed at the top of the slag collection hopper, and the pneumatic valve and the infrared sensor are interlocked to the control system. The infrared sensor can monitor the accumulation height of heavy debris in the slag collection hopper in real time. When the debris reaches a preset height, the sensor transmits a signal to the control system, which immediately interlocks and activates the pneumatic valve to discharge the slag, achieving automatic and precise discharge of heavy debris. This design prevents the slag collection hopper from overflowing due to overfilling, contaminating the corn fiber, or clogging the discharge port. It also prevents airflow leakage caused by excessively frequent slag discharge, ensuring a stable separation environment for the corn fiber, reducing manual monitoring costs, and improving the intelligent separation level of the equipment. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model;

[0025] Figure 2 This is a schematic diagram of the structure from another perspective of an embodiment of the present invention;

[0026] Figure 3 This is a cross-sectional view of an embodiment of the present utility model;

[0027] The components include: 1. Separation body; 2. Cavity; 3. Flow guide; 4. Feed plate; 5. Feed pipe; 6. Discharge pipe; 7. Drop port; 8. Slag hopper; 9. Metal detector; 10. Pneumatic valve; 11. Infrared sensor; 12. Control system. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] like Figure 1-3As shown, an automatic separation and collection device for heavy debris in an airflow conveying system includes a separation body 1. The separation body 1 includes a cylindrical cavity 2. A conical guide hood 3 is provided at the top of the cavity 2. A spiral feed plate 4 is provided between the outer side of the guide hood 3 and the inner wall of the cavity 2. A feed pipe 5 is provided on the upper side of the cavity 2, a discharge pipe 6 is provided at the top of the cavity 2, and a discharge port 7 is provided at the bottom of the cavity 2. The cylindrical cavity 2 provides a stable space for the separation of corn fiber and heavy debris. The conical guide hood 3 guides the airflow upward, while the spiral feed plate 4 causes the mixture of corn fiber and debris to move along a spiral path, extending the separation time. During this process, corn fiber, due to its light weight and strong airflow carrying capacity, is more likely to move upward with the airflow, while heavy debris, due to gravity and centrifugal force, is more likely to sink close to the inner wall of the cavity 2, significantly improving the initial separation efficiency and reducing the mutual entanglement of corn fiber and heavy debris.

[0030] The feed pipe 5 is arranged tangentially to the inner wall of the cavity 2, and the angle between the feed pipe 5 and the axis of the cavity 2 is 30-45°. The tangential arrangement allows the mixture of corn fiber and heavy impurities to form a rotating airflow upon entering the cavity 2, generating a strong centrifugal force; the 30-45° angle balances the axial upward force and radial rotational force of the material. Due to its high density, the heavy impurities are more easily thrown towards the inner wall of the cavity 2 and sink along the wall under centrifugal force, while the corn fiber, being lighter and more affected by air resistance, can move axially upward with the rotating airflow, effectively enhancing the separation of the two and preventing the heavy impurities from entering the discharge pipe 6 along with the corn fiber.

[0031] The cone angle of the guide shroud 3 is 50-60°. This 50-60° cone angle design creates a suitable airflow guiding channel, preventing both excessively small cone angles that would cause the airflow to rise too quickly and entrain heavy debris, and excessively large cone angles that would create vortices at the top and interfere with the smooth transport of corn fibers. This angle allows the corn fibers to smoothly gather upwards along the surface of the guide shroud 3 under the influence of airflow and enter the discharge pipe 6, while simultaneously preventing heavy debris (especially particles moving close to the inner wall) from entering the upper discharge area, further improving separation accuracy.

[0032] The cavity 2 has a diameter of 100-150cm and a height of 1-2m. The distance between the bottom edge of the flow guide 3 and the cavity 2 is 5-8cm. The diameter of the discharge port 7 is 18-20cm. The diameter of the discharge pipe 6 is 25-30cm. The diameter of the feed pipe 5 is 25-30cm. The cavity 2, with a diameter of 100-150cm and a height of 1-2m, provides ample separation space for corn fiber and heavy impurities, preventing material blockage. The bottom edge of the guide hood 3 is 5-8cm away from the cavity 2, ensuring smooth passage of corn fiber with airflow and enhancing local airflow velocity through the narrow gap to prevent heavy impurities from getting stuck. The matching diameters of the discharge port 7 and the inlet / outlet pipes 6 (discharge port 7 18-20cm, inlet / outlet pipes 6 25-30cm) ensure that heavy impurities can be smoothly discharged from the discharge port 7, while meeting the flow requirements for efficient transport of corn fiber in the airflow, avoiding pipe blockage, and ensuring the continuity and stability of the separation process.

[0033] The bottom of the discharge port 7 is connected to a funnel-shaped slag collection hopper 8, which has a volume of 50-100L. The funnel-shaped structure can guide the separated heavy impurities to quickly gather and fall into the slag collection hopper 8, avoiding the accumulation and blockage of impurities in the discharge port 7; the 50-100L volume can temporarily store a certain amount of heavy impurities, reducing the frequency of cleaning, extending the continuous operation time of the equipment, and preventing heavy impurities from flowing back into the cavity 2 due to excessive accumulation, thus affecting the purity of the corn fiber.

[0034] A metal detector 9 is installed inside the feed pipe 5, and the metal detector 9 is electrically connected to the control system 12. The metal detector 9 can detect metal impurities (such as iron nails, iron filings, etc.) in the corn fiber and heavy impurities before they enter the separation body 1, and transmit the signal to the control system 12. The control system 12 can determine the amount collected based on the number of warnings, and issue warnings in a timely manner or trigger subsequent processing mechanisms (such as suspending feed). It can be manually intervened, or the slag discharge can be automatically controlled according to actual conditions. At the same time, it prevents metal impurities from mixing into the corn fiber, ensures the quality and safety of the corn fiber, and reduces the risk of equipment failure in subsequent processing.

[0035] A pneumatic valve 10 is installed at the bottom of the slag collection hopper 8, and the pneumatic valve 10 is electrically connected to the control system 12. The pneumatic valve 10 is remotely controlled by the control system 12, eliminating the need for manual operation. When heavy impurities accumulate to a certain amount in the slag collection hopper 8, the control system 12 automatically opens to discharge slag, avoiding downtime during manual cleaning and improving separation efficiency. At the same time, the pneumatic valve 10 has good sealing performance, preventing airflow leakage from the discharge port 7 during the separation process, ensuring stable air pressure inside the cavity 2, and ensuring that corn fibers can be separated from heavy impurities under the drive of stable airflow, reducing the decrease in separation effect caused by air pressure fluctuations.

[0036] An infrared sensor 11 is installed on the upper part of the slag collection hopper 8. The pneumatic valve 10 and the infrared sensor 11 are interlocked to the control system 12. The infrared sensor 11 can monitor the accumulation height of heavy debris in the slag collection hopper 8 in real time. When the debris reaches the preset height, the sensor transmits a signal to the control system 12, and the control system 12 immediately interlocks and starts the pneumatic valve 10 to discharge the slag, realizing the automatic and precise discharge of heavy debris. This design avoids the slag collection hopper 8 from overflowing due to overfilling, contaminating the corn fiber, or clogging the discharge port 7. At the same time, it prevents airflow leakage caused by excessively frequent slag discharge, ensures a stable separation environment for the corn fiber, reduces manual monitoring costs, and improves the intelligent separation level of the equipment.

[0037] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

Claims

1. A heavy debris automatic separation and collection device for an air flow delivery system comprising a separation body, characterized in that: The separation body includes a cylindrical cavity, the top of which is provided with a conical flow guide, and a spiral feed plate is provided between the outer side of the flow guide and the inner wall of the cavity; A feed pipe is provided on the upper side of the cavity, a discharge pipe is provided on the top of the cavity, and a discharge port is provided at the bottom of the cavity.

2. The automatic separation and collection device for heavy debris in a pneumatic conveying system as described in claim 1, characterized in that: The feed pipe is arranged along the tangential direction of the inner wall of the cavity, and the angle between the feed pipe and the axis of the cavity is 30 to 45°.

3. The automatic separation and collection device for heavy debris in a pneumatic conveying system as described in claim 1, characterized in that: The cone angle of the fairing is 50-60°.

4. The automatic separation and collection device for heavy debris in a pneumatic conveying system as described in claim 1, characterized in that: The cavity has a diameter of 100-150cm and a height of 1-2m. The distance between the bottom edge of the flow guide and the cavity is 5-8cm. The diameter of the discharge port is 18-20cm. The diameter of the discharge pipe is 25-30cm. The diameter of the feed pipe is 25-30cm.

5. The automatic separation and collection device for heavy debris in a pneumatic conveying system as described in claim 1, characterized in that: The bottom of the discharge port is connected to a funnel-shaped slag collection hopper with a volume of 50-100L.

6. The automatic separation and collection device for heavy debris in a pneumatic conveying system as described in claim 1, characterized in that: A metal detector is installed inside the feed pipe, and the metal detector is electrically connected to the control system.

7. The automatic separation and collection device for heavy debris in a pneumatic conveying system as described in claim 5, characterized in that: The bottom of the slag collection hopper is equipped with a pneumatic valve, which is electrically connected to the control system.

8. The automatic separation and collection device for heavy debris in a pneumatic conveying system as described in claim 7, characterized in that: An infrared sensor is installed on the upper part of the slag collection hopper, and the pneumatic valve and the infrared sensor are interlocked to the control system.

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