Pneumatic conveying device for light raw materials of compound fertilizer

Abstract

The utility model discloses a pneumatic conveying device for light raw materials of compound fertilizer, which solves the problem that the existing powder conveying equipment causes environmental pollution due to serious material floating, and comprises a feeding bin, a surge bin, a conveying bin pump, a pneumatic conveying pipeline, a receiving bin and a metering scale, wherein an outlet of the feeding bin is connected with an inlet of the surge bin, an outlet of the surge bin is connected with an inlet of the conveying bin pump, a feeding valve is arranged between the outlet of the surge bin and the inlet of the conveying bin pump, and an outlet of the conveying bin pump is connected with the pneumatic conveying pipeline. An outlet connected with the pneumatic conveying pipeline is connected with an inlet of the material receiving bin, an outlet of the material receiving bin is connected with the metering scale, and after the quantity of the conveyed raw materials is accurately metered by the metering scale, the raw materials are conveyed to the mixing tank to be mixed. When materials are conveyed, waste caused by scattering of the materials is avoided, pollution to the atmosphere is avoided, dust emission can be more effectively controlled, and environmental pollution is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of compound fertilizer transportation, in particular to a pneumatic transportation device for light raw materials of compound fertilizer. Background Art

[0002] With economic development and social progress, safety, environmental protection, and ecological environment have become inevitable and a social consensus. Various powder conveying equipment has also continued to advance with modern industry. Pneumatic conveying systems are also widely used in the coal mining and cement industries, adapting to the material conveying needs of different industries.

[0003] The powder materials used in the current compound fertilizer workshop are large in quantity and relatively fine in size. They are now transported to a height of more than 100 meters by using bucket elevators. During the transportation process, there are negative and positive pressures inside the bucket elevator, which will cause the transported materials to escape from the inlet and outlet, causing serious material escape in the environment and causing environmental pollution. In addition, due to the phenomenon of negative pressure generated by the bucket elevator during the powder transportation process, the powder materials cannot be transported to the tower, and the materials accumulate in the bucket elevator and overflow from the bucket elevator inlet. In severe cases, the bucket elevator jumps, causing the system to stop, affecting the continuous operation of the system, resulting in some raw materials in the compound fertilizer production being unable to be added, and the production needs cannot be met. Utility Model Content

[0004] The utility model provides a pneumatic conveying device for light raw materials of compound fertilizer, which solves the technical problem that existing powder material conveying equipment has serious material drifting and causes environmental pollution.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] The present application provides a pneumatic conveying device for lightweight raw materials of compound fertilizer, comprising a feeding bin, a buffer bin, a conveying bin pump, a pneumatic conveying pipeline, a receiving bin, and a weighing scale; wherein, the outlet of the feeding bin is connected to the inlet of the buffer bin, the outlet of the buffer bin is connected to the inlet of the conveying bin pump, a feed valve is provided between the outlet of the buffer bin and the inlet of the conveying bin pump, the outlet of the conveying bin pump is connected to the pneumatic conveying pipeline, the outlet connected to the pneumatic conveying pipeline is connected to the inlet of the receiving bin, the outlet of the receiving bin is connected to the weighing scale, and after the weighing scale accurately measures the amount of raw materials to be conveyed, the raw materials are conveyed to a mixing tank for mixing; the device also includes a buffer tank, the inlet of the buffer tank is connected to a Roots vacuum pump, and compressed air is sent into the buffer tank through a first pipe to further stabilize the pressure fluctuation of the pneumatic conveying system, the buffer tank is connected to the feeding bin through a second pipe, the buffer tank is connected to the conveying bin pump through a third pipe, the buffer tank is connected to the pneumatic conveying pipeline through a fourth pipe, and the outlet of the conveying bin pump is connected to the fourth pipe through a fifth pipe.

[0007] Furthermore, a pneumatic valve is provided at the outlet of the buffer tank for controlling gas flow, pressure, flow rate and improving system operation efficiency; a hydraulic valve, a regulating valve and a pressure gauge are provided between the buffer tank and the feeding silo, and the pressure on the second pipeline is measured by the pressure gauge. When the pressure rises, it indicates that the front of the pipeline is blocked. The pressure is kept within a normal range by adjusting various valves to control the delivery volume of compressed air or reducing the amount of raw materials added to the feeding silo.

[0008] Furthermore, a sixth pipeline is provided between the buffer tank and the pneumatic conveying pipeline, the fourth pipeline and the sixth pipeline are connected in parallel, the fourth pipeline is provided with a hydraulic valve, a regulating valve and a pressure gauge, the sixth pipeline is provided with a hydraulic valve and a regulating valve, the fourth pipeline is used for feeding, and the raw materials in the conveying bin pump are fed into the pneumatic conveying pipeline, and the sixth pipeline is used for blowing and blocking. When the pressure gauge shows that the pressure increases, it means that the front of the pipeline is blocked, and the sixth pipeline is opened for blowing and blocking.

[0009] Furthermore, the conveying silo pump is also provided with a high material level meter for detecting the material level height. The high material level meter can detect the material level height in the conveying silo pump. When the material level reaches the set value of the high material level meter, an alarm can be issued or the corresponding valve action can be triggered, which is convenient for control.

[0010] Furthermore, the feeding bin, buffer bin and receiving bin are all provided with bag dust collectors.

[0011] Beneficial effects achieved by this utility model:

[0012] The utility model provides a pneumatic conveying device for lightweight raw materials for compound fertilizer. The pneumatic conveying method uses a sealed conveying method within a conveying pipeline, preventing impurities from entering the material. The conveying is very stable, ensuring the safety of nitro-compound fertilizer production. During conveying, the material is prevented from scattering and causing waste, causing no atmospheric pollution, and effectively controlling dust emissions, reducing environmental pollution and improving the existing production environment. The pneumatic conveying method allows for easy pipeline layout and a small footprint. With fewer operating parts, maintenance is minimal and convenient. Various functional fertilizer enhancement materials can be conveyed to the granulation tower, further ensuring the safe and stable operation of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic structural diagram of an embodiment of the present utility model;

[0014] Reference numerals:

[0015] 1. Feeding silo; 2. Buffer silo; 3. Delivery silo pump; 4. Pneumatic conveying pipeline; 5. Receiving silo; 6. Weighing scale; 7. Bag dust collector; 8. Buffer tank; 9. Feed valve; 10. First pipeline; 11. Second pipeline; 12. Third pipeline; 13. Fourth pipeline; 14. Fifth pipeline; 15. Sixth pipeline; 16. Pneumatic valve; 17. High level meter.

[0016] The accompanying drawings are for illustrative purposes only and should not be construed as limitations on this patent. To better illustrate this embodiment, some components of the accompanying drawings may be omitted, enlarged, or reduced in size and do not represent the actual dimensions of the product. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted from the accompanying drawings. The same or similar reference numerals correspond to the same or similar components. The terms describing positional relationships in the accompanying drawings are for illustrative purposes only and should not be construed as limitations on this patent. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0018] The technical solution of the present invention is described in detail below with reference to the accompanying drawings.

[0019] like Figure 1As shown, a pneumatic conveying device for light raw materials of compound fertilizer comprises a feeding bin 1, a buffer bin 2, a conveying bin pump 3, a pneumatic conveying pipeline 4, a receiving bin 5, and a weighing scale 6; wherein, the outlet of the feeding bin 1 is connected to the inlet of the buffer bin 2, the outlet of the buffer bin 2 is connected to the inlet of the conveying bin pump 3, a feed valve 9 is provided between the outlet of the buffer bin 2 and the inlet of the conveying bin pump 3, the outlet of the conveying bin pump 3 is connected to the pneumatic conveying pipeline 4, the outlet of the pneumatic conveying pipeline 4 is connected to the inlet of the receiving bin 5, and the outlet of the receiving bin 5 is connected to the weighing scale 6 The pneumatic conveying system is connected, and after the amount of raw materials to be conveyed is accurately measured by the measuring scale 6, the raw materials are conveyed to the mixing tank for mixing; it also includes a buffer tank 8, the inlet of the buffer tank 8 is connected to the Roots vacuum pump, and the compressed air is sent into the buffer tank 8 through the first pipe 10, so as to further stabilize the pressure fluctuation of the pneumatic conveying system, the buffer tank 8 is connected to the feeding bin 1 through the second pipe 11, the buffer tank 8 is connected to the conveying bin pump 3 through the third pipe 12, the buffer tank 8 is connected to the pneumatic conveying pipeline 5 through the fourth pipe 13, and the outlet of the conveying bin pump 3 is connected to the fourth pipe 13 through the fifth pipe 14.

[0020] In a specific embodiment, a pneumatic valve 16 is provided at the outlet of the buffer tank 8 for controlling the gas flow, pressure, flow rate and improving the system operation efficiency; a hydraulic valve, a regulating valve and a pressure gauge are provided between the buffer tank 8 and the feeding bin 1, and the pressure on the second pipeline is measured by the pressure gauge. When the pressure rises, it indicates that the front of the pipeline is blocked. The pressure is kept within a normal range by adjusting various valves to control the delivery amount of compressed air or reducing the amount of raw materials added to the feeding bin 1.

[0021] In a specific embodiment, a sixth pipeline 15 is further provided between the buffer tank 8 and the pneumatic conveying pipeline 4, the fourth pipeline 13 and the sixth pipeline 15 are connected in parallel, the fourth pipeline 13 is provided with a hydraulic valve, a regulating valve and a pressure gauge, and the sixth pipeline 15 is provided with a hydraulic valve and a regulating valve. The fourth pipeline 13 is used for feeding, and the raw materials in the conveying bin pump 3 are fed into the pneumatic conveying pipeline 5. The sixth pipeline 15 is used for blowing and blocking. When the pressure gauge shows that the pressure increases, it means that the front of the pipeline is blocked, and the sixth pipeline 15 is opened for blowing and blocking.

[0022] In a specific embodiment, the delivery bin pump 3 is also provided with a high material level meter 17 for detecting the material level height. The high material level meter 17 can detect the material level height in the delivery bin pump 3. When the material level reaches the set value of the high material level meter 17, an alarm can be issued or the corresponding valve action can be triggered, which is convenient for control.

[0023] In a specific embodiment, the feeding bin 1 , the buffer bin 2 , and the receiving bin 5 are all provided with bag dust collectors 7 .

[0024] The serial numbers of the embodiments of this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above are only preferred embodiments of this application and do not limit the scope of the patent of this application. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the scope of patent protection of this application.

Claims

1. A pneumatic conveying device for light raw materials of compound fertilizer, characterized in that: It includes a feeding bin (1), a buffer bin (2), a conveying bin pump (3), a pneumatic conveying pipeline (4), a receiving bin (5), and a weighing scale (6); wherein, The outlet of the feeding bin (1) is connected to the inlet of the buffer bin (2), the outlet of the buffer bin (2) is connected to the inlet of the delivery bin pump (3), a feed valve (9) is provided between the outlet of the buffer bin (2) and the inlet of the delivery bin pump (3), the outlet of the delivery bin pump (3) is connected to the pneumatic conveying pipeline (4), the outlet of the pneumatic conveying pipeline (4) is connected to the inlet of the receiving bin (5), the outlet of the receiving bin (5) is connected to the measuring scale (6), and after the amount of raw materials delivered is accurately measured by the measuring scale (6), the raw materials are delivered to the mixing tank for mixing; The invention also includes a buffer tank (8), the inlet of which is connected to a Roots vacuum pump, and compressed air is fed into the buffer tank (8) through a first pipe (10) to further stabilize the pressure fluctuation of the pneumatic conveying system. The buffer tank (8) is connected to the feeding bin (1) through a second pipe (11), the buffer tank (8) is connected to the delivery bin pump (3) through a third pipe (12), the buffer tank (8) is connected to the pneumatic conveying pipeline (5) through a fourth pipe (13), and the outlet of the delivery bin pump (3) is connected to the fourth pipe (13) through a fifth pipe (14).

2. A pneumatic conveying device for light raw materials of compound fertilizer according to claim 1, characterized in that: The outlet of the buffer tank (8) is provided with a pneumatic valve (16) for controlling the gas flow, pressure, flow rate and improving the operating efficiency of the system; a hydraulic valve, a regulating valve and a pressure gauge are provided between the buffer tank (8) and the feeding bin (1); the pressure on the second pipeline is measured by the pressure gauge; when the pressure increases, it indicates that the front of the pipeline is blocked; the pressure is kept within a normal range by adjusting various valves to control the delivery amount of compressed air or reducing the amount of raw materials added to the feeding bin (1).

3. A pneumatic conveying device for light raw materials of compound fertilizer according to claim 1, characterized in that: A sixth pipeline (15) is further provided between the buffer tank (8) and the pneumatic conveying pipeline (4). The fourth pipeline (13) and the sixth pipeline (15) are connected in parallel. The fourth pipeline (13) is provided with a hydraulic valve, a regulating valve and a pressure gauge. The sixth pipeline (15) is provided with a hydraulic valve and a regulating valve. The fourth pipeline (13) is used for feeding materials, and the raw materials in the conveying bin pump (3) are fed into the pneumatic conveying pipeline (5). The sixth pipeline (15) is used for blowing and blocking. When the pressure gauge shows that the pressure increases, it indicates that the front of the pipeline is blocked, and the sixth pipeline (15) is opened for blowing and blocking.

4. A pneumatic conveying device for light raw materials of compound fertilizer according to claim 1, characterized in that: The delivery bin pump (3) is also provided with a high material level meter (17) for detecting the material level. The high material level meter (17) can detect the material level in the delivery bin pump (3). When the material level reaches the set value of the high material level meter (17), an alarm can be issued or a corresponding valve action can be triggered, which is convenient for control.

5. The pneumatic conveying device for light raw materials of compound fertilizer according to claim 1, characterized in that: The feeding bin (1), the buffer bin (2), and the receiving bin (5) are all provided with a bag dust collector (7).

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