Environment-friendly pneumatic conveying device

Abstract

The utility model provides an environmental protection pneumatic conveying device, including bin, the bottom end of bin is equipped with bin support leg, the bottom end of bin is equipped with the hopper pipe, still include the feed pipe, the bottom end of hopper pipe is connected with the feed pipe, the inside upper end of hopper pipe is equipped with the discharging mechanism, the inside lower end of hopper pipe is equipped with the bulk cone, the right -hand end of feed pipe is equipped with first fan, the below of feed pipe is equipped with the total air pipe that is arranged in parallel with feed pipe, the left end of total air pipe is sealed, the right -hand end of total air pipe is equipped with second fan, and the total air pipe is equipped with a plurality of evenly spaced branch air pipe between feed pipe, and the upper end of branch air pipe is inclined left arrangement, the left end of feed pipe is equipped with the vertical storage tank that sets up, the top of storage tank is equipped with a plurality of air outlet, the inside upper end of storage tank is equipped with filter screen, and the bottom of storage tank is equipped with the discharge gate, is equipped with on -off valve on the discharge gate. The utility model discloses simple structure, convenient to use.

Description

Technical Field

[0001] This utility model belongs to the field of material conveying technology, and in particular relates to an environmentally friendly pneumatic conveying device. Background Technology

[0002] Pneumatic conveying, as a material conveying method, offers advantages over belt conveyors, vibrating conveyors, and screw conveyors, including flexible pipeline installation, long conveying distance, high efficiency, and a completely enclosed, pollution-free conveying process. Therefore, pneumatic conveying is widely used in industries such as power, building materials, metallurgy, chemicals, mining, and new energy for conveying fine particulate materials. Pneumatic conveying devices utilize airflow to transport bulk materials along pipelines and are classified into three types: negative pressure suction, positive pressure, and hybrid. Their working principle utilizes the kinetic energy of airflow to suspend the bulk materials, allowing them to be conveyed along the pipeline. However, existing pneumatic conveying feeding devices use a straight-through feeding method. When materials agglomerate, this can cause pipeline blockage. Furthermore, during conveying, as the air velocity decreases within the pipeline, larger particles fall to the bottom. Over time, this accumulation at the bottom of the pipeline leads to blockage, requiring the entire pneumatic conveying system to be stopped. The blockage must be manually identified and cleared before the system can be restarted. Therefore, in the existing technology, during the material conveying process, the material is prone to accumulate on the ground of the conveying pipeline, causing blockage of the conveying pipe and affecting the conveying efficiency. Utility Model Content

[0003] To address the technical problem of material blockage in existing pneumatic conveying devices, this invention provides an environmentally friendly pneumatic conveying device. It includes a vertically positioned, open-top hopper with several supporting legs at its bottom. A vertically positioned discharge pipe is located at the bottom of the hopper. The device also includes a horizontally positioned conveying pipe located below the material yard, with its bottom end connected to the conveying pipe. A discharge mechanism is located at the upper end of the discharge pipe's interior. This mechanism includes a horizontally positioned support shaft, with both ends rotatably mounted on the inner wall of the discharge pipe via bearings. Several material-pulling plates are fixed to the support shaft and arranged circumferentially. A material-pulling motor is located on the outside of the discharge pipe, with its power output shaft connected to the support shaft. The motor is connected to a power source and a PLC controller via a cable. Starting the motor causes the material-pulling plates to rotate via the support shaft, breaking up and dislodging the clumps of material inside the discharge pipe. The lower end of the feed pipe is equipped with a cone-shaped material dispersing cone. The lower part of the material dispersing cone is fixed to the inner wall of the feed pipe by a fixed rod. The material dispersing cone has several evenly spaced feeding holes. After the material in the feed pipe falls onto the material dispersing cone, it is dispersed. Some of the material falls into the conveying pipe through the feeding holes on the material dispersing cone, and some of the material falls into the conveying pipe from between the material dispersing cone and the feed pipe. A first fan is installed at the right end of the conveying pipe. Below the conveying pipe is a main air duct parallel to the conveying pipe, with the left end sealed. A second fan is installed at the right end of the main air duct. Several evenly spaced branch air ducts are provided between the main air duct and the conveying pipe, with the upper ends of the branch air ducts inclined to the left. Both the first and second fans are connected to a power supply and a PLC controller via cables. When the first fan is started, it introduces high-pressure air from the right end of the conveying pipe into the conveying pipe. The high-pressure air blows the material falling from the feed pipe toward the left end of the conveying pipe. As the conveying distance increases, the air velocity in the conveying pipe decreases, and some material falls to the bottom surface of the conveying pipe. When the second fan is started, it delivers high-pressure air through the main air duct to each branch air duct. The high-pressure air enters the conveying pipe through the branch air ducts, increasing the air velocity of the material in the conveying pipe, reducing material falling and accumulating at the bottom surface of the conveying pipe, thus improving conveying efficiency.A vertically positioned storage tank is located at the left end of the conveying pipe. Several exhaust vents are located at the top of the storage tank. A filter screen is installed at the upper interior of the storage tank, and a discharge port is located at the bottom. A switch valve is installed at the discharge port. A horizontally positioned rotating shaft is located at the lower interior of the storage tank. Both ends of the rotating shaft are rotatably mounted on the inner wall of the storage tank, and the rotating shaft is equipped with auger blades. A discharge motor is located on the outside of the storage tank, and the power output shaft of the discharge motor is connected to the rotating shaft. When material and air enter the storage tank from the conveying pipe, the air velocity decreases and is discharged from the top of the storage tank. Most of the material falls to the bottom of the storage tank under gravity, while a small amount of material falls after being blocked by the filter screen. The switch valve and the discharge motor are connected to the power supply and PLC controller via cables, activating the switch valve and the discharge motor. The discharge motor conveys the material in the storage tank to the discharge port, through which the material is discharged downwards from the storage tank.

[0004] Preferably, the bottom of the hopper is equipped with several vibrating motors to facilitate material feeding.

[0005] Preferably, the discharge port is located on the left side of the bottom of the storage tank.

[0006] The above scheme has the following advantages: The feeding mechanism breaks up large clumps of material inside the feeding pipe, facilitating the falling of material from the hopper and preventing blockage, thus improving feeding efficiency. The material dispersing cone disperses the material falling from the top of the feeding pipe more evenly into the conveying pipe, allowing it to be transported within the conveying pipe under the action of the first blower, reducing material accumulation and buildup. The second blower, main duct, and branch ducts allow the second blower to deliver high-pressure air through the main duct to each branch duct. The high-pressure air then enters the conveying pipe through the branch ducts, increasing the air velocity of the material inside the conveying pipe, reducing material falling and causing it to accumulate at the bottom of the conveying pipe, thereby improving conveying efficiency. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the structure of this utility model.

[0008] Reference numerals in the attached diagram: 1. Hopper; 2. Feeding mechanism; 3. Conveying pipe; 4. Main air duct; 5. Storage tank; 11. Hopper support leg; 12. Feeding pipe; 13. Vibrating motor; 14. Distributing cone; 21. Support shaft; 22. Feeding plate; 23. Feeding motor; 31. First fan; 41. Second fan; 42. Branch air duct; 51. Exhaust outlet; 52. Filter screen; 53. Discharge port; 54. Switch valve; 55. Rotating shaft; 56. Auger blade; 57. Dropping motor. Detailed Implementation

[0009] like Figure 1As shown, an environmentally friendly pneumatic conveying device includes a vertically arranged, open-top hopper 1. The bottom of the hopper 1 is provided with several supporting legs 11. A vertically arranged discharge pipe 12 is located at the bottom of the hopper 1. The device also includes a horizontally arranged conveying pipe 3 located below the material yard. The bottom end of the discharge pipe 12 is connected to the conveying pipe 3, and a discharge mechanism 2 is located at the upper end of the discharge pipe 12. The discharge mechanism 2 includes a horizontally arranged support shaft 21, the two ends of which are connected by bearings. The material is rotatably mounted on the inner wall of the feeding pipe 12, and several material-pulling plates 22 are fixed on the support shaft 21 and arranged around the support shaft 21. A material-pulling motor 23 is provided on the outer side of the feeding pipe 12. The power output shaft of the material-pulling motor 23 is connected to the support shaft 21 for transmission. The material-pulling motor 23 is connected to the power supply and PLC controller through a cable. When the material-pulling motor 23 is started, the material-pulling motor 23 drives the material-pulling plates 22 to rotate through the support shaft 21. The material-pulling plates 22 break up the clumps of material in the feeding pipe 12 and make it fall. The lower end of the feed pipe 12 is provided with a cone-shaped material dispersing cone 14. The lower part of the material dispersing cone 14 is fixed to the inner wall of the feed pipe 12 by a fixed rod. The material dispersing cone 14 has several evenly spaced feeding holes. After the material in the feed pipe 12 falls onto the material dispersing cone 14, it is dispersed. Some of the material falls into the conveying pipe 3 through the feeding holes on the material dispersing cone 14, and some of the material falls into the conveying pipe 3 from between the material dispersing cone 14 and the feed pipe 12. A first blower 31 is installed at the right end of the conveying pipe 3. A main air duct 4, parallel to the conveying pipe 3, is installed below it. The left end of the main air duct 4 is sealed, and a second blower 41 is installed at the right end of the main air duct 4. Several evenly spaced branch air ducts 42 are provided between the main air duct 4 and the conveying pipe 3. The upper ends of the branch air ducts 42 are inclined to the left. Both the first blower 31 and the second blower 41 are connected to a power supply and a PLC controller via cables. When the first blower 31 is started, it blows high-pressure air from the right end of the conveying pipe 3. The material is fed into the conveying pipe 3. The high-pressure air blows the material falling from the feed pipe 12 toward the left end of the conveying pipe 3. As the conveying distance increases, the air velocity in the conveying pipe 3 decreases, and some material falls to the bottom surface of the conveying pipe 3. The second fan 41 is started, and the second fan 41 delivers the high-pressure air through the main air pipe 4 to each branch air pipe 42. The high-pressure air enters the conveying pipe 3 through the branch air pipe 42, increasing the air velocity of the material in the conveying pipe 3, reducing the material falling and accumulating on the bottom surface of the conveying pipe 3, and improving the conveying efficiency.A vertically positioned storage tank 5 is located at the left end of the conveying pipe 3. Several exhaust vents 51 are located at the top of the storage tank 5. A filter screen 52 is located at the upper interior of the storage tank 5, and a discharge port 53 is located at the bottom of the storage tank 5. A switch valve 54 is located on the discharge port 53. A horizontally positioned rotating shaft 55 is located at the lower interior of the storage tank 5. Both ends of the rotating shaft 55 are rotatably mounted on the inner wall of the storage tank 5, and auger blades 56 are mounted on the rotating shaft 55. A material discharge motor 57 is located on the outer side of the storage tank 5, and the power output shaft of the material discharge motor 57... Connected to the rotating shaft 55, when material and air enter the storage tank 5 from the conveying pipe 3, the wind speed decreases and is discharged from the exhaust port 51 at the top of the storage tank 5. Most of the material falls to the bottom of the storage tank 5 under the action of gravity, and a small amount of material falls after being blocked by the filter screen 52. The switching valve 54 and the feeding motor 57 are connected to the power supply and PLC controller through the cable, and the switching valve 54 and the feeding motor 57 are started. The feeding motor 57 conveys the material in the storage tank 5 to the discharge port 53, and the material is discharged downward from the storage tank 5 through the discharge port 53.

[0010] Preferably, the bottom of the hopper 1 is provided with several vibrating motors 13 for easy material feeding.

[0011] Preferably, the discharge port 53 is located on the left side of the bottom end of the storage tank 5.

[0012] Usage process: In use, this invention first uses a lifting device to transport materials into the silo 1. Simultaneously, a vibrating motor 13, a material-pulling motor 23, a first blower 31, and a second blower 41 are started. The vibrating motor 13 vibrates, shaking the materials in the silo 1 and causing them to fall into the discharge pipe 12. The material-pulling motor 23 drives the material-pulling plate 22 to rotate via a support shaft 21. The material-pulling plate 22 breaks up the clumps of material in the discharge pipe 12, causing it to fall. The material in the discharge pipe 12 is dispersed after falling onto the material-dispersing cone 14. Some material falls through the discharge holes on the material-dispersing cone 14 into the conveying pipe 3, while some material falls between the material-dispersing cone 14 and the discharge pipe 12 into the conveying pipe 3. The first blower 31 inputs high-pressure air from the right end of the conveying pipe 3. The high-pressure air blows the material falling from the discharge pipe 12 towards the left end of the conveying pipe 3. As the conveying distance increases... As the air velocity in the conveying pipe 3 decreases, some material falls to the bottom surface of the conveying pipe 3. The second blower 41 delivers high-pressure air through the main air duct 4 to each branch air duct 42. The high-pressure air enters the conveying pipe 3 through the branch air duct 42, increasing the air velocity of the material in the conveying pipe 3, reducing the material falling and accumulating at the bottom surface of the conveying pipe 3, thus improving the conveying efficiency. When the material and air enter the storage tank 5 from the conveying pipe 3, the air velocity decreases and is discharged from the exhaust port 51 at the top of the storage tank 5. Most of the material falls to the bottom surface of the storage tank 5 under the action of gravity. A small amount of material falls after being blocked by the filter screen 52. The switching valve 54 and the material discharge motor 57 are connected to the power supply and PLC controller through the cable, starting the switching valve 54 and the material discharge motor 57. The material discharge motor 57 conveys the material in the storage tank 5 to the discharge port 53, and the material is discharged downward from the discharge port 53 into the storage tank 5.

[0013] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "top", "bottom", "horizontal", "vertical", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0014] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the protection scope of the present invention.

Claims

1. An environmentally friendly pneumatic conveying device, comprising a vertically arranged hopper with an open top, a plurality of supporting legs at the bottom of the hopper, and a vertically arranged discharge pipe at the bottom of the hopper, characterized in that: It also includes a horizontally installed conveying pipe located below the material yard. The bottom end of the discharge pipe is connected to the conveying pipe, and the upper end of the discharge pipe is equipped with a discharge mechanism. The lower end of the discharge pipe is equipped with a conical material dispersing cone, and the lower end of the material dispersing cone is fixed to the inner wall of the discharge pipe. The right end of the conveying pipe is equipped with a first fan. Below the conveying pipe is a main air duct that is parallel to the conveying pipe. The left end of the main air duct is sealed. The right end of the main air duct is equipped with a second fan. There are several evenly spaced branch air ducts between the main air duct and the conveying pipe. The upper ends of the branch air ducts are inclined to the left. The left end of the conveying pipe is equipped with a vertically installed storage tank. The top of the storage tank is equipped with several exhaust ports. The upper end of the storage tank is equipped with a filter screen, and the bottom end of the storage tank is equipped with a discharge port with a switch valve.

2. The environmentally friendly pneumatic conveying device according to claim 1, characterized in that: The feeding mechanism includes a horizontally arranged support shaft. Both ends of the support shaft are rotatably mounted on the inner wall of the feeding tube via bearings. Several feeding plates are fixed on the support shaft and arranged circumferentially along the support shaft. A feeding motor is provided on the outside of the feeding tube, and the power output shaft of the feeding motor is connected to the support shaft for transmission.

3. The environmentally friendly pneumatic conveying device according to claim 1, characterized in that: The material cone has several evenly spaced discharge holes.

4. The environmentally friendly pneumatic conveying device according to claim 1, characterized in that: The bottom of the hopper is equipped with several vibrating motors to facilitate material feeding.

5. The environmentally friendly pneumatic conveying device according to claim 1, characterized in that: The storage tank has a horizontally mounted rotating shaft at the lower end of its interior. Both ends of the rotating shaft are rotatably mounted on the inner wall of the storage tank. The rotating shaft is equipped with auger blades. A material discharge motor is located on the outside of the storage tank. The power output shaft of the material discharge motor is connected to the rotating shaft.

6. The environmentally friendly pneumatic conveying device according to claim 5, characterized in that: The discharge port is located on the bottom left side of the storage tank.

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