Humidifying device for dry powder extrusion granulation

Abstract

The humidifying device comprises a water adding storage tank, an air humidifying generator and a dry powder humidifying stock bin, the water adding storage tank is arranged above the air humidifying generator, the dry powder humidifying stock bin is arranged on one side of the air humidifying generator, the top of the water adding storage tank is connected with a water adding funnel through a water supplementing pipe, and the water adding funnel is connected with the water supplementing pipe. The bottom is connected with the air humidifying generator through a water inlet pipe, the bottom of the air humidifying generator is connected with an air inlet pipe used for conveying compressed air, the top of the air humidifying generator is connected with the dry powder humidifying bin through a wet air outlet pipe, and a feeding gate valve is arranged on a feeding pipe connected with the top of the dry powder humidifying bin; and the bottom is connected with a discharging screw conveyer through a discharging pipe. According to the humidifying device, the forming effect of dry powder extrusion granulation can be remarkably improved, the dry powder granulation efficiency is improved, and the production energy consumption is reduced.

Description

Technical Field

[0001] This utility model relates to the field of organic fertilizer granulation production control technology, specifically to a humidification device for dry powder extrusion granulation. Background Technology

[0002] Potassium humate is an organic fertilizer, also known as potassium humate. It is formed through the degradation of plant and animal residues in the natural environment and contains abundant humic acid and potassium. Potassium humate organic fertilizer offers numerous benefits to plant growth. First, it increases soil fertility, improves soil structure, and enhances soil water and fertilizer retention capacity. Second, it activates soil microbial activity, promoting microbial reproduction and decomposition of organic matter, thus increasing soil nutrient supply. Furthermore, potassium humate can improve plant resistance to stress, enhance disease and pest resistance, and promote plant growth and development. When using potassium humate organic fertilizer, follow the instructions on the packaging. It can usually be sprinkled directly on the soil surface or added to planting holes. It is important to note that the application rate should be appropriate to avoid overuse, which could lead to fertilizer waste or environmental pollution. In summary, potassium humate organic fertilizer is beneficial for plant growth, improving soil quality and increasing crop yield and quality.

[0003] When potassium humate powder is spread in the field, it generates a lot of dust. The potassium humate powder is blown away by the wind, wasting fertilizer. In addition, the dust from potassium humate powder can also harm the health of fertilizer applicators. Therefore, granulation of potassium humate powder can greatly improve the ease of use of potassium humate fertilizer.

[0004] Currently, potassium humate powder is produced using spray drying, resulting in a moisture content of approximately 1%-2%. This is highly unfavorable for extrusion granulation. Low moisture content during extrusion granulation leads to incomplete granulation and excessive powder return, severely impacting granulation efficiency. Therefore, we provide a humidification device for dry powder extrusion granulation. Utility Model Content

[0005] The purpose of this invention is to provide a humidification device for dry powder extrusion granulation to solve the problems mentioned in the background art.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A humidification device for dry powder extrusion granulation includes a water storage tank, an air humidifier, and a dry powder humidification silo. The water storage tank is located above the air humidifier, and the dry powder humidification silo is located to one side of the air humidifier. The top of the water storage tank is connected to a water funnel via a water supply pipe, and the bottom is connected to the air humidifier via a water inlet pipe. The bottom of the air humidifier is connected to an air inlet pipe for conveying compressed air, and the top is connected to the dry powder humidification silo via a humidification outlet pipe. The top of the dry powder humidification silo is equipped with an inlet gate valve on its feed pipe, and the bottom is connected to a discharge screw conveyor via a discharge pipe.

[0008] As a further embodiment of this utility model: the top of the air humidifier is connected to the top of the water tank via a connecting pipe, and a shut-off valve five is provided on the connecting pipe; an exhaust pipe with a shut-off valve two is inserted into the top surface of the water tank.

[0009] As a further embodiment of this utility model: a shut-off valve is provided on the water supply pipe between the water tank and the water funnel, and a water level gauge is provided on one side of the water tank. An upper connecting pipe with a shut-off valve is connected between the top of the water level gauge and the top of the water funnel, and a lower connecting pipe with a shut-off valve is connected between the bottom of the water level gauge and the bottom of the water funnel.

[0010] As a further embodiment of this utility model: a shut-off valve six is ​​provided on the water inlet pipe, and a water level gauge two is provided on one side of the air humidifier. An upper connecting pipe with a shut-off valve eight is connected between the top of the water level gauge two and the top of the air humidifier, and a lower connecting pipe with a shut-off valve nine is connected between the bottom of the water level gauge two and the bottom of the air humidifier.

[0011] As a further embodiment of this utility model: the air inlet pipe is provided with a shut-off valve seven, and an air jet pipe connected to the air inlet pipe is provided inside the air humidifier, and the air jet pipe is provided with a plurality of jet holes with a diameter of 2mm.

[0012] As a further embodiment of this utility model: a shut-off valve is provided on the moisture outlet pipe, and a moisture spray pipe connected to the moisture outlet pipe is provided inside the dry powder humidifying hopper, and a number of spray holes with a diameter of 2mm are opened on the moisture spray pipe.

[0013] As a further embodiment of this utility model, the top of the dry powder humidifying silo is provided with a vent pipe.

[0014] The beneficial effects of this utility model are:

[0015] (1) The humidification device of this application can significantly improve the molding effect of dry powder extrusion granulation and increase the efficiency of dry powder granulation.

[0016] (2) The humidification device of this application can be used in the production of potassium humate dry powder. According to the moisture content of potassium humate dry powder, the air intake of compressed air in the humidification device of this application can be adjusted to ensure that the potassium humate dry powder is easily rolled into shape in the rolling press of extrusion granulation, and the dry powder is not too wet, which may cause it to stick to the roller of the rolling press.

[0017] (3) The humidification device of this application is beneficial to the production of dry powder granulation, thereby solving the problem that the dry powder is too dry and difficult to extrude and form during the rolling granulation process, strengthening the control of the humidity of the rolled dry powder, and stabilizing the process operation flow. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] In the diagram: 1. Water funnel; 2. Shut-off valve one; 3. Shut-off valve two; 4. Water storage tank; 5. Shut-off valve three; 6. Water level gauge one; 7. Shut-off valve four; 8. Connecting pipe; 9. Shut-off valve five; 10. Water inlet pipe; 11. Shut-off valve six; 12. Air humidifier; 13. Air inlet pipe; 14. Shut-off valve seven; 15. Air jet pipe; 16. Shut-off valve eight; 17. Water level gauge two; 18. Shut-off valve nine; 19. Moisture outlet pipe; 20. Shut-off valve ten; 21. Moisture jet pipe; 22. Feed gate valve; 23. Ventilation pipe; 24. Dry powder humidifying silo; 25. Discharge screw conveyor. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0022] In the description of this utility model, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; in the description of this utility model, "a plurality of" or "several" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0023] Please see Figure 1 As shown, this utility model is a humidification device for dry powder extrusion granulation, including a water storage tank 4, an air humidification generator 12, and a dry powder humidification silo 24. The water storage tank 4 is located above the air humidification generator 12, and the dry powder humidification silo 24 is located on one side of the air humidification generator 12. The top of the water storage tank 4 is connected to the water funnel 1 via a water supply pipe, and the bottom is connected to the air humidification generator 12 via a water inlet pipe 10. The bottom of the air humidification generator 12 is connected to an air inlet pipe 13 for conveying compressed air, and the top is connected to the dry powder humidification silo 24 via a moisture outlet pipe 19. The feed pipe connected to the top of the dry powder humidification silo 24 is equipped with a feed gate valve 22, and the bottom is connected to a discharge screw conveyor 25 via a discharge pipe.

[0024] During the use of the humidification device of this application, humidifying liquid can be replenished into the water storage tank 4 through the water funnel 1 and temporarily stored in the water storage tank 4. The water storage tank 4 can replenish humidifying liquid into the air humidification generator 12 through the water inlet pipe 10. When the air humidification generator 12 delivers compressed air through the air inlet pipe 13, the compressed air comes into contact with the humidifying liquid to form saturated humid air. The saturated humid air is easily delivered into the dry powder humidification silo 24 through the moisture outlet pipe 19. By opening the feed gate valve 22, dry powder is delivered into the dry powder humidification silo 24. During the falling process, the dry powder comes into contact with the saturated humid air, so that the dry powder absorbs the moisture in the air before being extruded and granulated. This can significantly improve the forming effect of dry powder extrusion granulation and increase the efficiency of dry powder granulation.

[0025] It should be understood that the humidification device of this application can be used in the production of potassium humate dry powder. According to the moisture content of potassium humate dry powder, the intake volume of compressed air in the humidification device of this application can be adjusted to ensure that the potassium humate dry powder is easily rolled into shape in the roller press for extrusion granulation, without the dry powder being too wet and sticking to the roller press roller. In order to achieve the saturated humid air formed by the contact between compressed air and humidifying liquid in this application, the humidification device achieves the humidity value required for dry powder granulation, which is beneficial to the production of dry powder granulation. This solves the problem that the dry powder is too dry and difficult to extrude into shape during the roller granulation process, strengthens the control of the humidity of the rolled dry powder, stabilizes the process operation flow, and can achieve the following effects: first, it reduces the amount of powder returned during the roller pressing process; second, it increases the forming rate after roller pressing and improves the output.

[0026] In this specific embodiment, the top of the air humidifier 12 is connected to the top of the water tank 4 via a connecting pipe 8, and a shut-off valve 9 is provided on the connecting pipe 8. An exhaust pipe with a shut-off valve 3 is inserted into the top surface of the water tank 4. During the process of supplying compressed air through the air inlet pipe 13 in the air humidifier 12, some of the saturated humid air formed can enter the water tank 4 through the connecting pipe 8 so that it can be discharged from the exhaust pipe. This is to avoid the accumulation of air in the air humidifier 12 and the water tank 4 and the resulting pressure increase, thereby avoiding affecting the flow direction of the humidifying water and compressed air.

[0027] In this specific embodiment, a shut-off valve 2 is provided on the water supply pipe between the water storage tank 4 and the water funnel 1, and a water level gauge 6 is provided on one side of the water storage tank 4. The top of the water level gauge 6 is connected to the top of the water funnel 1 via an upper connecting pipe with a shut-off valve 5, and the bottom of the water level gauge 6 is connected to the bottom of the water funnel 1 via a lower connecting pipe with a shut-off valve 7. The water level gauge 6 can be used to monitor the level of the humidifying water stored in the water storage tank 4 in real time, and timely replenishment can be carried out.

[0028] In this specific embodiment, a shut-off valve 11 is provided on the water inlet pipe 10, and a water level gauge 17 is provided on one side of the air humidifier 12. The top of the water level gauge 17 is connected to the top of the air humidifier 12 by an upper connecting pipe with a shut-off valve 16, and the bottom of the water level gauge 17 is connected to the bottom of the air humidifier 12 by a lower connecting pipe with a shut-off valve 18. The water level gauge 17 can be used to monitor the level of the humidifying water stored in the air humidifier 12 in real time, and timely replenishment can be made.

[0029] In this specific embodiment, the air inlet pipe 13 is provided with a shut-off valve 14, and an air jet pipe 15 connected to the air inlet pipe 13 is provided inside the air humidifier 12. The air jet pipe 15 has several jet holes with a diameter of 2mm. The air jet pipe 15 ensures that the compressed air is evenly sprayed inside the air humidifier 12, so as to accelerate the formation efficiency of saturated humid air.

[0030] In this specific embodiment, a shut-off valve 20 is provided on the moisture outlet pipe 19, and a moisture spray pipe 21 connected to the moisture outlet pipe 19 is provided inside the dry powder humidifying silo 24. The moisture spray pipe 21 has several spray holes with a diameter of 2mm. The moisture spray pipe 21 ensures that saturated humid air is evenly sprayed inside the dry powder humidifying silo 24, so as to improve the humidification effect and humidification efficiency of the dry powder.

[0031] In this specific embodiment, the top of the dry powder humidifying silo 24 is provided with a vent pipe 23; the vent pipe 23 is used to reduce the pressure of the dry powder humidifying silo 24, thereby avoiding affecting the humidification treatment of the dry powder.

[0032] In this specific embodiment, the working process of the humidification device of this application can be described in detail through the following specific implementation steps: The specific implementation steps for starting up the humidification device of this application are as follows:

[0033] Step 1: Open shut-off valve 3 (5) and shut-off valve 4 (7) in sequence. Monitor the humidifying liquid level in water tank 4 in real time using water level gauge 1 (6). Open shut-off valve 2 (3) to allow the interior of water tank 4 to communicate with the atmosphere. Open shut-off valve 1 (2) to add industrial water to water funnel 1. When the liquid level in water tank 4 is detected as 80% by water level gauge 1 (6), close shut-off valve 1 (2) to stop water intake and close shut-off valve 2 (3) to stop venting.

[0034] Step 2: Open shut-off valve 8 16 and shut-off valve 9 18 in sequence. Monitor the storage level of humidifying water in the air humidifier 12 in real time through water level gauge 2 17. Open shut-off valve 5 9 to make air space communication between water tank 4 and air humidifier 12. Open shut-off valve 6 11 to let water from water tank 4 flow into air humidifier 12. When the liquid level of air humidifier 12 is detected as 50% by water level gauge 2 17, close shut-off valve 6 11 to stop water intake.

[0035] Step 3: Open the feed gate valve 22 at the top of the dry powder humidifying silo 24, and feed potassium humate dry powder into the dry powder humidifying silo 24. Open the stop valve 10 20 and the stop valve 7 14 to introduce compressed air into the air humidifying generator 12. Start the discharge screw conveyor 25 to send the humidified potassium humate dry powder to the extrusion granulation equipment for granulation. The amount of compressed air can be adjusted according to the output of potassium humate dry powder granulation and the granulation forming condition to achieve the humidification requirements of granulation production.

[0036] Step 4: When the liquid level of the air humidifier (12) drops to 20% and water needs to be added, the shut-off valve 59 and shut-off valve 611 should be opened in sequence. When the liquid level of the air humidifier 12 rises to 80%, shut-off valve 59 should be closed and shut-off valve 611 should be opened.

[0037] Step 5: When the liquid level in water tank 4 drops to 20% and water needs to be added, shut-off valve 5 (9) and shut-off valve 6 (11) should be closed in sequence, and shut-off valve 2 (3) should be opened to release air. After there is no pressure inside water tank 4, shut-off valve 1 (2) should be opened. When the liquid level in water tank 4 rises to 80%, shut-off valve 1 (2) and shut-off valve 2 (3) should be closed.

[0038] The specific steps for shutting down the humidification device in this application are as follows:

[0039] Step S1: Close shut-off valve 7 14 to stop supplying compressed air to air humidifier 12, and close shut-off valve 10 20 to stop supplying humidified air to dry powder humidifier silo 24.

[0040] Step S2: Stop the operation of the discharge screw conveyor 25.

[0041] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A humidification device for dry powder extrusion granulation, characterized in that, The device includes a water storage tank (4), an air humidifier (12), and a dry powder humidifier silo (24). The water storage tank (4) is located above the air humidifier (12), and the dry powder humidifier silo (24) is located on one side of the air humidifier (12). The top of the water storage tank (4) is connected to a water funnel (1) via a water supply pipe, and the bottom is connected to the air humidifier (12) via a water inlet pipe (10). The bottom of the air humidifier (12) is connected to an air inlet pipe (13) for conveying compressed air, and the top is connected to the dry powder humidifier silo (24) via a moisture outlet pipe (19). The top of the dry powder humidifier silo (24) is connected to a feed pipe with a feed gate valve (22), and the bottom is connected to a discharge screw conveyor (25) via a discharge pipe.

2. The humidification device for dry powder extrusion granulation according to claim 1, characterized in that, The top of the air humidifier (12) is connected to the top of the water tank (4) via a connecting pipe (8), and a shut-off valve five (9) is provided on the connecting pipe (8). An exhaust pipe with a shut-off valve two (3) is inserted into the top surface of the water tank (4).

3. The humidification device for dry powder extrusion granulation according to claim 1, characterized in that, A shut-off valve 1 (2) is provided on the water supply pipe between the water tank (4) and the water funnel (1), and a water level gauge 1 (6) is provided on one side of the water tank (4). The top of the water level gauge 1 (6) is connected to the top of the water funnel (1) by an upper connecting pipe with a shut-off valve 3 (5), and the bottom of the water level gauge 1 (6) is connected to the bottom of the water funnel (1) by a lower connecting pipe with a shut-off valve 4 (7).

4. The humidification device for dry powder extrusion granulation according to claim 1, characterized in that, The water inlet pipe (10) is equipped with a stop valve six (11), and a water level gauge two (17) is provided on one side of the air humidifier (12). The top of the water level gauge two (17) is connected to the top of the air humidifier (12) by an upper connecting pipe with a stop valve eight (16), and the bottom of the water level gauge two (17) is connected to the bottom of the air humidifier (12) by a lower connecting pipe with a stop valve nine (18).

5. The humidification device for dry powder extrusion granulation according to claim 1, characterized in that, The air inlet pipe (13) is equipped with a shut-off valve (14), and an air jet pipe (15) connected to the air inlet pipe (13) is provided inside the air humidifier (12). The air jet pipe (15) has several jet holes with a diameter of 2mm.

6. The humidification device for dry powder extrusion granulation according to claim 1, characterized in that, The moisture outlet pipe (19) is equipped with a shut-off valve (20), and a moisture spray pipe (21) connected to the moisture outlet pipe (19) is provided inside the dry powder humidifying silo (24). The moisture spray pipe (21) has several spray holes with a diameter of 2mm.

7. The humidification device for dry powder extrusion granulation according to claim 1, characterized in that, The top of the dry powder humidifying silo (24) is equipped with a vent pipe (23).

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