A positive pressure conveying device for a silo

Abstract

The utility model discloses a kind of for material bin positive pressure conveying device, it is related to industrial production technical field, including material bin, rotary discharging mechanism, material conveying pipe, high-pressure fan etc. Rotating discharging mechanism adopts "*" shaped impeller, its blade layout, angle and size are adapted to granular material characteristics, can uniformly push material when rotating, and shell body and impeller gap precision, material quality is smooth and wear-resistant, cooperate motor variable frequency speed regulation, realize uniform and not jamming of discharging. The device is also provided with unpacking grating, its outer frame is stable, grating strip spacing is reasonable, unpacking sawtooth plate is located in grating strip gap and sawtooth protrudes, can quickly tear packaging bag, improve feeding convenience and efficiency. The device can effectively improve the stability and production efficiency of granular material conveying, reduce production cost and labor intensity.

Description

Technical Field

[0001] This utility model relates to the field of industrial production technology, and in particular to a positive pressure conveying device for silos. Background Technology

[0002] In the existing granular material conveying device structure, some devices adopt a simple straight-through discharge port, where the granular material falls directly under gravity. When the granular material has poor flowability, such as when it is damp, has uneven particle size, or contains a certain proportion of fine powder, it is very easy to accumulate and bridge at the discharge port, forming a blockage. Moreover, this straight-through design does not effectively guide and control the falling of the granular material, resulting in uneven falling speed and further increasing the risk of blockage.

[0003] Some devices are equipped with discharge valves to control the flow rate, but the valve adjustment accuracy is limited, making it difficult to make precise adjustments according to the actual characteristics of the granular material and the conveying requirements. When the valve opening is small, the granular material is prone to getting stuck at the valve; while if the opening is too large, it may lead to excessive discharge, exceeding the processing capacity of the subsequent conveying equipment and causing material blockage. Utility Model Content

[0004] To address the technical problems existing in the background art, this utility model proposes a positive pressure conveying device for silos.

[0005] This utility model proposes a positive pressure conveying device for a silo, comprising a movable carrier and a support frame installed on the upper part of the movable carrier. A hopper is installed on the top of the support frame, a rotary feeding mechanism is installed at the discharge port at the bottom of the hopper, a conveying pipe is installed at the discharge port of the rotary feeding mechanism, and a high-pressure blower is also installed on the upper part of the movable carrier. The air outlet of the high-pressure blower is connected to the air inlet of the conveying pipe. The rotary feeding mechanism includes an outer shell installed between the hopper outlet and the feed pipe inlet. An impeller is rotatably connected inside the outer shell, and the impeller is driven to rotate by a motor installed on the side of the outer shell.

[0006] Furthermore, a shaft is rotatably connected inside the outer casing, the impeller is mounted outside the shaft, and the drive end of the motor is connected to the shaft.

[0007] Furthermore, a base is mounted on the side of the outer casing, and the motor is mounted on the end of the base.

[0008] Furthermore, the impeller is configured with an asterisk (*) shaped structure.

[0009] Furthermore, the top of the hopper is equipped with a packing grid to hold packaging bags containing granular material.

[0010] Furthermore, the unpacking grid includes an outer frame installed inside the hopper inlet, with several horizontally laid grid strips connected inside the outer frame, and several unpacking serrated plates also installed inside the outer frame.

[0011] Furthermore, the unpacking serrated plate is located in the space between any two grid bars, and the serrated part of the unpacking serrated plate protrudes from the upper surface of the grid bar.

[0012] The beneficial effects of this utility model are: 1. The rotating feeding mechanism can generate a uniform and continuous pushing force on the granular material when it rotates, allowing the material to fall in an orderly manner, effectively avoiding local accumulation and achieving uniform feeding; 2. The installed unpacking grid allows operators to quickly rip open packaging bags by simply pulling them after placing them in the grid, without the need for additional tools. This saves manpower and time, avoids problems caused by improper manual unpacking, makes feeding faster and more accurate, and improves overall production efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the disassembled structure of this utility model; Figure 2 This is a schematic diagram showing the disassembled structure of the rotary feeding mechanism in this utility model; Figure 3 This is a schematic diagram of the disassembly structure of the unpacking grille in this utility model; Figure 4 This is a schematic diagram of the assembly structure of this utility model; Figure 5 This is a half-sectional view of the assembled version of this utility model.

[0014] In the diagram: 1. Movable carrier; 2. Support frame; 3. Hopper; 4. Rotary feeding mechanism; 41. Outer shell; 42. Shaft; 43. Impeller; 44. Base; 45. Motor; 5. Conveying pipe; 6. High-pressure blower; 7. Unpacking grid; 71. Outer frame; 72. Grid strip; 73. Unpacking serrated plate. Detailed Implementation

[0015] Reference Figure 1-5 The present invention proposes a positive pressure conveying device for silos, which mainly consists of a movable carrier 1, a supporting frame 2, a hopper 3, a rotating feeding mechanism 4, a conveying pipe 5, a high-pressure blower 6, and a packing unpacking grid 7. The specific technical solution is as follows: The carrier frame 2 is installed on the upper part of the movable carrier 1, and the hopper 3 is installed on the top of the carrier frame 2. Its shape is an inverted cone with a wider upper part and a narrower lower part. This design is conducive to the natural sliding and concentration of granular materials. An unpacking grille 7 is installed at the top of the hopper 3 for carrying the packaging bags filled with granular materials, facilitating the unpacking operation. The rotary feeding mechanism 4 is installed between the discharge port at the bottom of the hopper 3 and the feeding port of the conveying pipe 5. The high-pressure blower 6 is installed on the upper part of the movable carrier 1, and its air outlet is connected to the air inlet of the conveying pipe 5. The high-pressure blower 6 adopts a centrifugal or Roots blower, which can provide sufficient air pressure and air volume to convey the granular materials through the conveying pipe 5 to the target silo. The power and model of the high-pressure blower 6 are selected according to factors such as the conveying distance, the characteristics of the granular materials, and the conveying volume; The rotary feeding mechanism 4 consists of a housing 41, a shaft rod 42, an impeller 43, a base 44, and a motor 45. Specifically, the housing 41 is installed between the discharge port of the hopper 3 and the feeding port of the conveying pipe 5. The shaft rod 42 is rotatably connected inside the housing 41 and is connected to the housing 41 through bearings to ensure its flexible rotation. The impeller 43 is installed outside the shaft rod 42 and is set in a "*" shape structure. This structure enables the impeller 43 to more effectively carry out the granular materials from the hopper 3 during rotation and evenly convey them into the conveying pipe 5. The base 44 is installed on the side of the housing 41, and the motor 45 is installed at the end of the base 44. The driving end of the motor 45 is connected to the shaft rod 42. By rotating the motor 45, the shaft rod 42 is driven to rotate, and then the impeller 43 is driven to rotate. The motor 45 adopts a variable-frequency speed-regulating motor, and the speed can be adjusted according to actual needs to control the feeding speed and flow rate; The unpacking grille 7 is installed inside the top feeding port of the hopper 3 and mainly consists of an outer frame 71, grille bars 72, and unpacking serrated plates 73. Specifically, the outer frame 71 is installed inside the feeding port of the hopper 3 and is set in a "□" shape structure. A number of horizontally laid grille bars 72 are connected inside the outer frame 71. The spacing between the grille bars 72 ensures that the granular materials can fall into the inside of the hopper 3. A number of unpacking serrated plates 73 are also installed inside the outer frame 71. The unpacking serrated plates 73 are located in the space between any two grille bars 72, and the serrated part of the unpacking serrated plates 73 protrudes above the upper surface of the grille bars 72. When the packaging bag filled with granular materials is placed on the unpacking grille 7, by pulling the packaging bag manually or mechanically, the serrated part of the unpacking serrated plates 73 can easily cut through the packaging bag, enabling the granular materials to smoothly fall into the hopper 3.

[0016] Working process: First, the packaging bag containing the granular material is placed on the unpacking grid 7. The packaging bag is cut open by the unpacking saw blade 73, allowing the granular material to fall into the hopper 3. Then, the motor 45 is started, which drives the shaft 42 and impeller 43 to rotate. The impeller 43 evenly conveys the granular material in the hopper 3 into the conveying pipe 5. At the same time, the high-pressure blower 6 is started. The high-pressure airflow generated by the high-pressure blower 6 enters the conveying pipe 5, conveying the granular material through the conveying pipe 5 to the target silo, thus achieving positive pressure conveying of the granular material.

[0017] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A positive pressure conveying device for a silo, comprising a movable carrier (1) and a supporting frame (2) mounted on the upper part of the movable carrier (1), characterized in that, The top of the supporting frame (2) is equipped with a hopper (3), the bottom of the hopper (3) is equipped with a rotary feeding mechanism (4), the discharge port of the rotary feeding mechanism (4) is equipped with a conveying pipe (5), and the upper part of the movable carrier (1) is also equipped with a high-pressure blower (6), the air outlet of the high-pressure blower (6) is connected to the air inlet of the conveying pipe (5); The rotary feeding mechanism (4) includes an outer shell (41) installed between the discharge port of the hopper (3) and the inlet of the conveying pipe (5). An impeller (43) is rotatably connected inside the outer shell (41), and the impeller (43) is driven to rotate by a motor (45) installed on the side of the outer shell (41).

2. The positive pressure conveying device for a silo according to claim 1, characterized in that, The shaft (42) is rotatably connected inside the outer casing (41), the impeller (43) is mounted outside the shaft (42), and the drive end of the motor (45) is connected to the shaft (42).

3. The positive pressure conveying device for a silo according to claim 2, characterized in that, A base (44) is mounted on the side of the outer casing (41), and the motor (45) is mounted on the end of the base (44).

4. The positive pressure conveying device for a silo according to claim 1, characterized in that, The impeller (43) is configured with a "*" shaped structure.

5. The positive pressure conveying device for a silo according to claim 1, characterized in that, The top of the hopper (3) is equipped with a packing grid (7) to hold the packaging bags containing granular material.

6. The positive pressure conveying device for a silo according to claim 5, characterized in that, The unpacking grid (7) includes an outer frame (71) installed inside the feed inlet of the hopper (3), and several horizontally laid grid strips (72) are connected inside the outer frame (71). Several unpacking sawtooth plates (73) are also installed inside the outer frame (71).

7. The positive pressure conveying device for a silo according to claim 6, characterized in that, The unpacking sawtooth plate (73) is located in the space between any two grid bars (72), and the sawtooth portion of the unpacking sawtooth plate (73) protrudes from the upper surface of the grid bar (72).

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