A blanking device for a pneumatic conveying device and a pneumatic conveying system

Abstract

This utility model provides a feeding device and pneumatic conveying system for pneumatic conveying equipment, belonging to the field of material conveying technology. It includes a material distribution pipe with a material inlet for material entry. A distribution component is installed on the material distribution pipe to move the material entering from the material inlet along the extension direction of the material distribution pipe. A material distribution structure is installed between the material distribution pipe and the pneumatic conveying pipe to disperse and convey the material in the material distribution pipe to the pneumatic conveying pipe. The material distribution structure includes multiple material distribution openings, which are arranged at intervals along the extension direction of the material distribution pipe. Alternatively, the material distribution openings can be elongated and extend along the extension direction of the material distribution pipe. The distribution component moves the material in the material distribution pipe along the extension direction of the material distribution openings, allowing the material to enter the material distribution openings. This prevents the material from accumulating at a single material drop point in the pneumatic conveying pipe and blocking it.

Description

Technical Field

[0001] This utility model belongs to the field of material conveying technology, and in particular relates to a feeding device and a pneumatic conveying system for pneumatic conveying equipment. Background Technology

[0002] Pneumatic conveying is widely used in industries such as steel, cement, power generation, and non-ferrous metals. It utilizes the kinetic and potential energy of air to move materials from one location to another. Pneumatic conveying is primarily used for conveying low-density, powdery materials, such as pulverized coal, desulfurizing agents, dust collector ash, mineral particles, and coke (granular) powder. The conveying method is mainly pressure conveying, aiming for energy conservation in dense phase conveying.

[0003] Currently, high-density, large-particle materials can also be conveyed pneumatically. However, during the conveying of these materials, accumulation is prone to occur at the material drop point in the pneumatic conveying pipe. Excessive accumulation can block the gas flow channel, causing material transport failure. Furthermore, the accumulated material can divide the pneumatic conveying pipe into two parts. If the pneumatic conveying pipe needs to maintain a high temperature, the temperature of the particles closer to the air inlet will rise, causing a localized temperature increase in the pipe between the accumulated material and the air inlet. Conversely, the temperature of the particles further away from the air inlet will decrease, resulting in a localized temperature increase in the pneumatic conveying pipe. This severely affects normal production and transportation operations, and may even lead to safety accidents. Therefore, this problem urgently needs to be solved. Summary of the Invention

[0004] This utility model provides a feeding device and a pneumatic conveying system for pneumatic conveying equipment to solve the technical problem in the prior art where, when conveying high-density, large-particle materials, the materials tend to accumulate at the material falling position in the pneumatic conveying pipe. When too much material accumulates, it can block the gas flow channel, causing the material transportation to fail.

[0005] This utility model provides a feeding device and a pneumatic conveying system for a pneumatic conveying equipment, including a material distribution pipe with a material inlet for material to enter. A distribution component is provided on the material distribution pipe for conveying the material entering from the material inlet along the extension direction of the material distribution pipe. A material distribution structure is provided between the material distribution pipe and the pneumatic conveying pipe for dispersing and conveying the material in the material distribution pipe to the pneumatic conveying pipe. The material distribution structure includes a material distribution opening, which is disposed on the material distribution pipe.

[0006] The material distribution openings are multiple, and the multiple material distribution openings are arranged at intervals along the extension direction of the material distribution pipe.

[0007] Alternatively, the material distribution opening is elongated and extends along the extension direction of the material distribution pipe, and the dispensing component is used to move the material of the material distribution pipe in the extension direction of the material distribution opening so that the material enters the material distribution opening.

[0008] In one embodiment of the present invention, the material distribution pipe has a first end close to the material distribution inlet and a second end far from the material distribution inlet. When the material distribution opening is elongated, the opening size of the material distribution opening gradually increases along the direction from the first end to the second end.

[0009] In one embodiment of the present invention, the material distribution pipe has a first end close to the material distribution inlet and a second end far from the material distribution inlet. When multiple material distribution openings are arranged at intervals along the extension direction of the material distribution pipe, the opening area of ​​each material distribution opening gradually increases along the direction from the first end to the second end.

[0010] In one embodiment of the present invention, the feeding device further includes a hopper, the hopper having a discharge port for discharging material, the discharge port being configured corresponding to the material distribution inlet and communicating with the material distribution inlet, and a valve being provided at the discharge port of the hopper.

[0011] In one embodiment of the present invention, the hopper and the distribution pipe are sealed together, and the hopper is connected to the inlet of the distribution pipe through the outlet.

[0012] In one embodiment of the present invention, a high-temperature resistant and wear-resistant layer is provided on the inner wall of both the silo and the distribution pipe, and a heat insulation layer is provided on the outer wall of both the silo and the distribution pipe.

[0013] In one embodiment of the present invention, a weighing device is provided outside the silo, and the weighing device is used to measure the weight of the materials inside the silo.

[0014] In one embodiment of the present invention, the distribution component includes a screw conveyor, which is disposed inside the distribution pipe. The screw conveyor is used to transport the material from the distribution inlet along the extension direction of the distribution pipe, and the material transport range of the screw conveyor covers the layout range of the distribution opening.

[0015] This utility model also provides a pneumatic conveying system, including a pneumatic conveying pipeline and a feeding device for pneumatic conveying equipment as described above.

[0016] In one embodiment of the present invention, the wind-powered conveying pipe and the material distribution pipe of the material feeding device are connected by a material feeding pipe, and the extension direction of the material feeding pipe is perpendicular to or intersects with the extension direction of the material distribution pipe of the material feeding device.

[0017] The beneficial effects of this utility model are as follows: The material feeding device and pneumatic conveying system proposed in this utility model allow the material to enter the distribution pipe through the material feeding inlet. After entering the distribution pipe, the material is transported along the extension direction of the distribution pipe by the distribution component, so that the material is distributed along the axial direction of the distribution pipe. Then, the material is dispersed and transported to the pneumatic conveying pipe through the material distribution opening, thereby avoiding the accumulation of material at one material landing point in the pneumatic conveying pipe and blocking the pneumatic conveying pipe. The feeding device of this application can ensure the stability and safety of the material during pneumatic transportation after feeding, and has good economic promotion value. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0019] In the attached diagram:

[0020] Figure 1 This is a schematic diagram of the structure of a feeding device for a pneumatic conveying equipment provided in one embodiment of the present invention;

[0021] Figure 2 for Figure 1 Enlarged structural diagram at point A;

[0022] Figure 3 This is a schematic diagram of the material distribution opening provided in one embodiment of the present utility model;

[0023] Figure 4 This is a second schematic diagram of the material distribution opening provided in one embodiment of the present utility model;

[0024] Figure 5 This is a third schematic diagram of the material distribution opening provided in one embodiment of the present utility model;

[0025] Figure 6 This is a fourth schematic diagram of the material distribution opening provided in one embodiment of the present utility model;

[0026] Figure 7 This is the fifth schematic diagram of the material distribution opening provided in one embodiment of the present utility model;

[0027] Figure 8 This is a schematic diagram of the material distribution opening provided in one embodiment of the present utility model, shown as diagram six.

[0028] Figure 9This is the seventh schematic diagram of the material distribution opening provided in one embodiment of the present utility model;

[0029] Figure 10 This is a schematic diagram of the material distribution opening provided in one embodiment of the present utility model, shown in Figure 8.

[0030] Figure 11 This is a schematic diagram of the structure of the feeding pipe perpendicular to the material distribution pipe and the pneumatic conveying pipe in one embodiment of the present utility model;

[0031] Figure 12 This is a schematic diagram of the structure of the feeding pipe that is not perpendicular to the distribution pipe and the pneumatic conveying pipe in one embodiment of the present invention.

[0032] The attached figures are labeled as follows:

[0033] 1. Material bin; 2. Material distribution pipe; 201. Material distribution opening; 3. Screw conveyor; 301. Screw blade; 302. Rotating shaft; 303. Drive motor; 4. Discharge pipe; 5. Gas conveying pipe; 6. Gas control valve; 7. Pneumatic conveying pipe; 8. Discharge valve. Detailed Implementation

[0034] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0035] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. The drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0036] In the following description, numerous details are explored to provide a more thorough explanation of embodiments of the present invention. However, it will be apparent to those skilled in the art that embodiments of the present invention may be practiced without these specific details. In other embodiments, well-known structures and devices are shown in block diagram form rather than in detail to avoid obscuring embodiments of the present invention.

[0037] Please see Figure 1 and Figure 2As shown, this utility model provides a feeding device for a pneumatic conveying equipment, including a material distribution pipe 2. The material distribution pipe 2 has a material distribution inlet for the material to enter. A distribution component is provided on the material distribution pipe 2. The distribution component is used to transport the material entering from the material distribution inlet along the extension direction of the material distribution pipe 2. A material distribution structure is provided between the material distribution pipe 2 and the pneumatic conveying pipe 7. The material distribution structure is used to disperse and transport the material in the material distribution pipe 2 to the pneumatic conveying pipe 7. The material distribution structure includes a material distribution opening 201. There are multiple material distribution openings 201. The multiple material distribution openings 201 are arranged sequentially at intervals along the extension direction of the material distribution pipe 2. Alternatively, the material distribution openings 201 are elongated and extend along the extension direction of the material distribution pipe 2. The distribution component is used to transport the material in the material distribution pipe 2 in the extension direction of the material distribution openings 201 so that the material enters the material distribution openings 201. After the materials enter the distribution pipe 2 through the material inlet, they are transported along the extension direction of the distribution pipe 2 by the distribution component, so that the materials are distributed axially in the distribution pipe 2. Then, the materials are dispersed and transported to the pneumatic conveying pipe 7 through the distribution opening 201, thereby avoiding the accumulation of materials at one material drop point in the pneumatic conveying pipe 7 and blocking the pneumatic conveying pipe 7. The feeding device of this application can ensure the stability and safety of the pneumatic transportation after the materials are fed, and has good economic promotion value.

[0038] like Figures 3 to 10 As shown, in this embodiment, the material distribution pipe 2 has a first end near the material distribution inlet and a second end away from the material distribution inlet. When the material distribution opening 201 is elongated, its opening size gradually increases from the first end to the second end. During the material transport process of the distribution component, since the amount of material near the material distribution inlet is greater than that away from the material distribution inlet, the opening size of the material distribution opening 201 increases from the first end to the second end. This can, to a certain extent, ensure that the material entering the pneumatic conveying pipe 7 is more uniform, and improve the stability of the feeding device used in the pneumatic conveying equipment during operation. In some embodiments, two or more elongated material distribution openings 201 are arranged side by side along the circumference of the material distribution pipe 2.

[0039] In another embodiment, the material distribution pipe 2 has a first end near the material distribution inlet and a second end away from the material distribution inlet. When multiple material distribution openings 201 are arranged sequentially at intervals along the extension direction of the material distribution pipe 2, the opening area of ​​each material distribution opening 201 gradually increases from the first end to the second end. During the material transport process of the distribution component, since the amount of material near the material distribution inlet is greater than that away from the material distribution inlet, the area of ​​the material distribution opening 201 is smaller closer to the material distribution inlet. This can, to a certain extent, ensure that the amount of material entering each material distribution opening 201 is relatively balanced, further improving the stability of the feeding device used in the pneumatic conveying equipment during operation. In some embodiments, two or more material distribution openings 201 are arranged side by side along the circumference of the material distribution pipe 2. The shape of the material distribution opening 201 can be circular, square, or polygonal, etc., and the shape of the material distribution opening 201 can be adjusted according to actual usage needs.

[0040] The feeding device also includes a hopper 1, which has a discharge port for discharging material. The discharge port is set corresponding to the material distribution inlet and is connected to the material distribution inlet. A valve is installed at the discharge port of the hopper 1. The amount of material entering the material distribution pipe 2 from the hopper 1 can be adjusted by the valve. The valve can be a gate valve.

[0041] The material silo 1 and the material distribution pipe 2 are sealed together, and the material silo 1 is connected to the material distribution pipe 2 through the discharge port. This can prevent the material in the material silo 1 from escaping to the outside during the feeding process and polluting the outside environment. At the same time, it can also help the material in the material silo 1 maintain its required temperature.

[0042] In this embodiment, the feeding device is used to transport high-temperature materials. The inner walls of the silo 1 and the distribution pipe 2 are provided with a high-temperature resistant and wear-resistant layer, and the outer walls of the silo 1 and the distribution pipe 2 are provided with a heat insulation layer to ensure that the high-temperature materials can be well kept warm during transportation.

[0043] A weighing device is installed outside the silo 1 to measure the weight of the materials inside. This allows for convenient control of the amount of materials flowing out, achieving precise control.

[0044] In this embodiment, the distribution component includes a screw conveyor 3, which is installed inside the distribution pipe 2. The screw conveyor 3 is used to transport the material from the material inlet along the extension direction of the distribution pipe 2, and the material transport range of the screw conveyor 3 covers the layout range of the distribution opening 201. The screw conveyor 3 includes a screw blade 301, a rotating shaft 302, and a drive motor 303. The screw blade 301 is connected to the output shaft of the drive motor 303 through the rotating shaft 302. When the screw blade 301 rotates axially around the rotating shaft 302, it transports the material along the axial direction of the distribution pipe 2, which can prevent the material from falling into the distribution pipe 2 and causing vibration and impact on the entire structure of the feeding device. The screw conveyor has the advantages of simple structure, easy debugging, convenient maintenance, and large conveying capacity. The drive motor 303 is installed outside the distribution pipe 2 and is a speed-regulating motor. During the operation of the feeding device, the rotation speed of the screw blade 301 around its rotating shaft 302 can be adjusted according to the working conditions.

[0045] In some embodiments, the dispensing assembly includes a drive rod, a secondary drive rod, scrapers, and a shift fork. Both the drive rod and the secondary drive rod extend axially along the dispensing pipe 2, and the secondary drive rod reciprocates axially along the dispensing pipe 2 following the drive rod. The drive rod has a first position and a second position, with the first position closer to the dispensing inlet than the second position. Multiple scrapers are sequentially rotatably arranged on the drive rod along the axial direction of the dispensing pipe 2. The secondary drive rod is movable on the drive rod along the axial direction of the dispensing pipe 2, and has a driving position and a reset position relative to the drive rod. The rod is equipped with a fork, which corresponds to the scraper and is used to move the scraper. When the driving rod is in the first position, the auxiliary driving rod is in the driving position relative to the driving rod. At this time, the workpiece is on the movement trajectory of the scraper. When the driving rod reaches the second position, the auxiliary driving rod moves to the reset position relative to the driving rod, and the fork moves the scraper to rotate, so that the workpiece is outside the movement trajectory of the scraper. When the driving rod reaches the first position, the auxiliary driving rod moves to the driving position relative to the driving rod. This reciprocating motion can realize the movement of the workpiece.

[0046] In other embodiments, the distribution assembly includes a high-pressure jetting pipeline, through which the work material moves axially along the pneumatic conveying pipeline 7 via high-pressure gas. The type and combination of the distribution assembly can be adjusted according to actual production needs.

[0047] This utility model also provides a pneumatic conveying system, including a pneumatic conveying pipe 7 and a feeding device for pneumatic conveying equipment as described above.

[0048] The pneumatic conveying pipe 7 and the distributing pipe 2 of the discharging device are connected by a discharging pipe 4. The extension direction of the discharging pipe 4 is perpendicular to or intersects with the extension direction of the distributing pipe 2. When the work material falls into the pneumatic conveying pipe 7, if the work material is heavy, it will impact the inner wall of the pneumatic conveying pipe 7 under its own weight, which can easily damage the inner wall of the pneumatic conveying pipe 7. Therefore, the axial direction of the discharging pipe 4 is intersected with the axial direction of the distributing pipe 2 at an angle. During the falling process, the inner wall of the discharging pipe 4 can support the work material, thereby slowing down the speed of the work material falling into the pneumatic conveying pipe 7 and reducing the impact force between the work material and the pneumatic conveying pipe 7. The axial direction of the discharging pipe 4 is perpendicular to the axial direction of the distributing pipe 2. The work material is not obstructed when falling in the discharging pipe 4, and the falling speed of the work material is not reduced. Therefore, the discharging efficiency of the work material can be improved to a certain extent.

[0049] When multiple material distribution openings 201 are arranged sequentially at intervals along the extension direction of the material distribution pipe 2, the number of material discharge pipes 4 can be adapted to the number of material distribution openings 201, or one material discharge pipe 4 can correspond to two or more material distribution openings 201; when the material distribution opening 201 is elongated, the cross-sectional area of ​​the material discharge pipe 4 is adapted to the cross-sectional area of ​​the material distribution opening 201.

[0050] The wind-powered conveying pipeline 7 has a transport start point, a material unloading area, and a transport end point. The material unloading area is located between the transport start point and the transport end point. The transport start point is connected to the gas conveying pipeline 5. The gas conveying pipeline 5 is equipped with a gas control valve 6. The gas flow rate entering the gas conveying pipeline 5 can be controlled by adjusting the gas control valve 6.

[0051] In this embodiment, the pneumatic conveying system is used to transport high-temperature materials. The inner walls of the silo 1, the distribution pipe, the pneumatic conveying pipe 7, and the discharge pipe 4 are all provided with a high-temperature resistant and wear-resistant layer, and the outer walls of the silo 1, the distribution pipe, the pneumatic conveying pipe 7, and the discharge pipe 4 are all provided with a heat insulation layer to ensure that the high-temperature materials can be well kept warm during transportation.

[0052] In summary, after the materials enter the distribution pipe 2 through the material inlet, they are transported along the extension direction of the distribution pipe 2 by the distribution component, so that the materials are distributed axially within the distribution pipe 2. Then, the materials are dispersed and transported to the pneumatic conveying pipe 7 through the distribution opening 201, thereby avoiding the accumulation of materials at one material drop point in the pneumatic conveying pipe 7 and blocking the pneumatic conveying pipe 7. The feeding device of this application can ensure the stability and safety of the pneumatic transportation after the materials are fed, and has good economic promotion value.

[0053] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A material discharge device for a pneumatic conveying apparatus, characterized by, The system includes a material distribution pipe with a material inlet for material to enter. A distribution assembly is provided on the material distribution pipe for conveying the material entering from the material inlet along the extension direction of the material distribution pipe. A material distribution structure is provided between the material distribution pipe and the pneumatic conveying pipe for dispersing and conveying the material in the material distribution pipe to the pneumatic conveying pipe. The material distribution structure includes a material distribution opening provided on the material distribution pipe. The material distribution openings are multiple, and the multiple material distribution openings are arranged at intervals along the extension direction of the material distribution pipe. Alternatively, the material distribution opening is elongated and extends along the extension direction of the material distribution pipe, and the dispensing component is used to move the material of the material distribution pipe in the extension direction of the material distribution opening so that the material enters the material distribution opening.

2. The device for a pneumatic conveying apparatus according to claim 1, characterized in that: The material distribution pipe has a first end near the material distribution inlet and a second end away from the material distribution inlet. When the material distribution opening is elongated, the opening size of the material distribution opening gradually increases along the direction from the first end to the second end.

3. The device for pneumatic conveying apparatus according to claim 1, characterized in that: The material distribution pipe has a first end close to the material distribution inlet and a second end far from the material distribution inlet. When multiple material distribution openings are arranged at intervals along the extension direction of the material distribution pipe, the opening area of ​​each material distribution opening gradually increases along the direction from the first end to the second end.

4. The device for pneumatic conveying apparatus according to claim 1, characterized in that: The feeding device further includes a hopper, which has a discharge port for discharging material. The discharge port is configured to correspond to the material distribution inlet and is connected to the material distribution inlet. A valve is provided at the discharge port of the hopper.

5. A de-lugging device for pneumatic conveying equipment according to claim 4, characterized in that: The hopper and the distribution pipe are sealed together, and the hopper is connected to the inlet of the distribution pipe through the outlet.

6. The device for a pneumatic conveying apparatus according to claim 4, characterized in that: The inner walls of the silo and the distribution pipe are provided with a high-temperature resistant and wear-resistant layer, and the outer walls of the silo and the distribution pipe are provided with a heat insulation layer.

7. A de-lugging device for pneumatic conveying equipment according to any one of claims 4-6, characterized in that: A weighing device is installed outside the silo, which is used to measure the weight of the materials inside the silo.

8. A de-lugging device for pneumatic conveying equipment according to any one of claims 1-6, characterized in that: The distribution component includes a screw conveyor, which is disposed inside the distribution pipe. The screw conveyor is used to transport the material from the distribution inlet along the extension direction of the distribution pipe, and the material transport range of the screw conveyor covers the layout range of the distribution opening.

9. A pneumatic conveying system characterized in that, It includes a pneumatic conveying pipeline and a feeding device for a pneumatic conveying equipment as described in any one of claims 1-8.

10. A pneumatic conveying system according to claim 9, characterised in that: The wind-powered conveying pipeline and the material distribution pipeline of the material feeding device are connected by the material feeding pipeline, and the extension direction of the material feeding pipeline is perpendicular to or inclined to the extension direction of the material distribution pipeline of the material feeding device.

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