Compound fertilizer production system

Abstract

A compound fertilizer production system, comprising: a feeding mechanism for feeding solid raw materials; a first feeding mechanism for vacuum conveying solid raw materials; the outlet of the first feeding mechanism is connected with a feeding pipeline; a crushing mechanism is arranged in the feeding pipeline for crushing the solid raw materials to form small-particle intermediate materials; a mixing mechanism is connected with the feeding pipeline for mixing the intermediate materials and liquid additives to form semi-finished products; the outlet of the mixing mechanism is connected with the first feeding mechanism through a circulating pipeline; and a packaging mechanism is connected with the outlet of the mixing mechanism through a discharging pipeline for packaging the semi-finished products. By arranging the crushing mechanism in the feeding pipeline, the solid raw materials are pre-crushed, so that the liquid additives can be more uniformly and stably attached and penetrated into the inside of the raw materials, the wrapping and coating effect of the fertilizer particles is stronger, and the caking can be effectively avoided, thereby improving the product yield.

Description

Technical Field

[0001] This utility model relates to the field of fertilizer production and processing, specifically to a compound fertilizer production system. Background Technology

[0002] During the production of compound fertilizer, due to the clumping and moisture absorption of solid raw materials, even after mixing with liquid additives in a mixer, a considerable portion of the finished granular fertilizer will still clump together, affecting the granular fertilizer forming rate and thus reducing the yield of compound fertilizer products, resulting in a poor user experience. Utility Model Content

[0003] The main technical problem this invention addresses is the issue of compound fertilizers easily clumping and having a low yield rate in related technologies.

[0004] To address the aforementioned technical problems, this application provides a compound fertilizer production system, comprising:

[0005] Feeding mechanism, used for feeding solid raw materials;

[0006] The first feeding mechanism is connected to the feeding mechanism via a conveying pipeline and is used for vacuum transfer of the solid raw material; the outlet of the first feeding mechanism is connected to the feeding pipeline.

[0007] A crushing mechanism, installed in the feeding pipeline, is used to crush the solid raw material to form small particles of intermediate material;

[0008] A mixing mechanism, connected to the feeding pipeline, is used to mix the intermediate material and liquid additives to form a semi-finished product; the outlet of the mixing mechanism is connected to the first feeding mechanism through a circulation pipeline.

[0009] The packaging mechanism is connected to the outlet of the mixing mechanism via a discharge pipe and is used to package the semi-finished product.

[0010] In one embodiment, the mixing mechanism includes a mixer and a spraying device, the spraying device including at least two spray heads communicating with the mixing chamber of the mixer, the spray heads being used to pressurize and spray the liquid additive.

[0011] In one embodiment, the compound fertilizer production system further includes a circulation pipeline connected to the outlet of the mixing mechanism and the first feeding mechanism, for transporting the semi-finished product along the circulation pipeline to the first feeding mechanism;

[0012] The crushing mechanism is also used to perform cyclic crushing of the semi-finished product;

[0013] The mixing mechanism is also used to perform a cyclic mixing process between the semi-finished product and the liquid additive.

[0014] In one embodiment, the system further includes a pressure balancing pipe that connects the mixing mechanism and the feeding mechanism.

[0015] In one embodiment, the feeding mechanism includes a feeding port and an auxiliary feeding platform connected to the feeding port. The auxiliary feeding platform has a bearing surface, which is an inclined surface that gradually rises in the direction away from the feeding port.

[0016] In one embodiment, the compound fertilizer production system further includes an air compressor and an extraction pipeline. The extraction pipeline is connected to the air compressor and the first feeding mechanism. The air compressor provides vacuum transport to the first feeding mechanism through the extraction pipeline.

[0017] In one embodiment, the air compressor includes a Roots blower, which is located outdoors.

[0018] In one embodiment, the compound fertilizer production system further includes a noise reduction device, which is disposed on the Roots blower.

[0019] In one embodiment, the packaging mechanism includes a second feeding mechanism, a packaging hopper, a packaging machine, and a sewing machine. The second feeding mechanism is connected to the discharge pipeline. The packaging hopper is connected to the outlet of the second feeding mechanism and to the packaging machine. The packaging machine and the sewing machine are connected by a belt drive.

[0020] In one embodiment, the compound fertilizer production system further includes a dust removal fan, which is disposed at the feeding mechanism.

[0021] According to the compound fertilizer production system in this application embodiment, by setting a crushing mechanism in the feeding pipeline to pre-crush the solid raw materials, the liquid additives can adhere and penetrate into the interior of the raw materials more evenly and stably, resulting in a stronger coating and encapsulation effect on the fertilizer particles, effectively preventing clumping, and thus improving the product yield. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the compound fertilizer production system test in an embodiment of this application.

[0023] Figure 2 This is a top view of the compound fertilizer production system in an embodiment of this application.

[0024] Figure 3 This is a schematic diagram of the feeding mechanism in the compound fertilizer production system of this application embodiment.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1-Feeding mechanism; 10-Conveying pipeline; 11-Feeding port; 12-Auxiliary feeding platform; 13-Bearing surface; 14-Dust removal fan;

[0027] 2-First feeding mechanism; 20-Feeding pipeline;

[0028] 3- Crushing mechanism;

[0029] 4-Mixing mechanism; 40-Discharge pipe; 41-Agitator; 42-Spraying device; 421-Spray head;

[0030] 5-Packaging mechanism; 51-Second feeding mechanism; 52-Packaging hopper; 53-Packaging machine; 54-Bag sewing machine;

[0031] 6-Circulation piping;

[0032] 7-Pressure balance tube;

[0033] 8-Air compressor; 80-Air extraction pipeline; 81-Silencer. Detailed Implementation

[0034] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0035] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.

[0036] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the objects being described and have no sequential or technical meaning. Unless otherwise specified, the terms "connection" and "linkage" used in this application include both direct and indirect connections (linkages).

[0037] To address the problem of compound fertilizer products easily agglomerating, resulting in low yield and poor user experience in related technologies, this application provides a compound fertilizer production system. Please refer to [link / reference]. Figure 1 -to Figure 3 As shown, the compound fertilizer production system includes:

[0038] Feeding mechanism 1 is used for feeding solid raw materials;

[0039] The first feeding mechanism 2 is connected to the feeding mechanism 1 through the conveying pipeline 10 and is used for vacuum transmission of solid raw materials; the outlet of the first feeding mechanism 2 is connected to the feeding pipeline 20.

[0040] The crushing mechanism 3 is installed in the feeding pipe 20 and is used to crush solid raw materials to form small particles of intermediate material.

[0041] The mixing mechanism 4 is connected to the feeding pipeline 20 and is used to mix intermediate materials and liquid additives to form a semi-finished product; the outlet of the mixing mechanism 4 is connected to the first feeding mechanism 2 through the circulation pipeline 6.

[0042] The packaging mechanism 5 is connected to the outlet of the mixing mechanism 4 via the discharge pipe 40 and is used to package the semi-finished products.

[0043] The compound fertilizer production system in this embodiment is used to produce compound fertilizer, which refers to a chemical fertilizer containing multiple nutrients. Compound fertilizer has advantages such as high nutrient content, few by-products, and favorable physical properties, playing a vital role in balanced fertilization, improving fertilizer utilization, and promoting high and stable crop yields. In this compound fertilizer production system, the various components are interconnected by pipelines, enabling the transfer of raw materials, intermediate materials, and other products for compound fertilizer production.

[0044] The feeding mechanism 1 is used to feed solid raw materials into the compound fertilizer production system. The feeding operation through the feeding mechanism 1 can be performed manually or automatically, feeding the solid raw materials through the feeding port 11 of the feeding mechanism 1 into the conveying pipeline 10 connected to the feeding mechanism 1.

[0045] In some optional embodiments, to facilitate feeding operations and reduce dust generation during the feeding process, the feeding mechanism 1 may specifically include a feeding port 11 and an auxiliary feeding platform 12 connected to the feeding port 11. The auxiliary feeding platform 12 has a bearing surface 13, which is an inclined surface that gradually rises in the direction away from the feeding port 11. Since the feeding mechanism 1 includes the auxiliary feeding platform 12, and the bearing surface 13 of the auxiliary feeding platform 12 is an inclined surface that slopes downwards towards the feeding port 11, solid raw materials can be directly fed into the feeding mechanism 1 through the feeding port 11 via the bearing surface 13. This effectively reduces the need for users to shake the packaging bag during the feeding process, thereby reducing dust. By setting the inclined bearing surface 13, feeding efficiency is improved; for example, the feeding time for 1.5t of ultrafine powder can be reduced from 30 minutes to 21-22 minutes.

[0046] The first feeding mechanism 2 is connected to the feeding mechanism 1 via a conveying pipe 10. Driven by the first feeding mechanism 2, the solid raw material located in the conveying pipe 10 is transported to the first feeding mechanism 2 along the extension direction of the conveying pipe 10. The first feeding mechanism 2 can transport the solid raw material along the conveying pipe 10 by vacuum extraction, thus the feeding mechanism 1 and the first feeding mechanism 2 are connected in a sealed manner through the conveying pipe 10.

[0047] To transport solid raw materials to the mixing mechanism 4 for mixing with liquid additives, the first feeding mechanism 2 is connected to the feeding pipeline 20, which in turn is connected to the mixing mechanism 4. To reduce agglomeration, the feeding pipeline 20 in this embodiment is equipped with a crushing mechanism 3. This crushing mechanism 3 is used to perform high-speed grinding and crushing of the solid raw materials within the feeding pipeline 20, resulting in finer intermediate materials with stronger permeability. This allows for thorough mixing with the subsequent liquid additives, thereby preventing agglomeration.

[0048] The crushing mechanism 3 can be composed of components such as a casing, rotor, screen, main shaft, and main shaft air seal device. Sealing rings are installed at the joints of the casing to prevent dust leakage. Material is directly and quantitatively fed into the crushing chamber of the crushing mechanism 3 via a screw conveyor or feeding pipe 20, ensuring uniform and continuous feeding. Its internal structure consists of a rotor, screen, and outer casing forming a closed crushing chamber. When the material is fed into the crushing chamber, it also accelerates under the high-speed rotation of the rotor and moves outwards under centrifugal force. During this process, the material is violently crushed by collisions between the rotor and the fixed blades, with the crushing intensity increasing towards the outer edge. Due to the multi-layered crushing structure of the rotor and fixed blades, the crushing effect is quite thorough, resulting in finer output material with uniform particle size. During this crushing process, a large amount of air is drawn into the crushing zone, serving to cool the machine and the material, and to facilitate material transport.

[0049] By incorporating the crushing mechanism 3, lumpy or pseudo-lumpy solid raw materials can be thoroughly ground and pulverized, resulting in more uniform blending and more complete penetration with liquid additives. Comparative experiments have shown that before the crushing mechanism 3 was installed, samples of compound fertilizer showed that 5.02g of product failed to pass through a 0.5mm sieve per 100g, representing a failure rate of 5.02%. After the crushing mechanism 3 was installed, the weight of product failing to pass through the 0.5mm sieve per 100g decreased to 3.27g, further reducing the failure rate to 3.27%.

[0050] To facilitate mixing of the intermediate material and liquid additives, this embodiment also includes a mixing mechanism 4, which is connected to the feeding pipeline 20. The intermediate material, after being ground and pulverized by a crusher, enters the mixing mechanism 4. The mixing mechanism 4 uses stirring and other methods to fully mix the intermediate material and liquid additives to form a semi-finished product, thereby preventing the finished fertilizer from clumping.

[0051] In order to make the semi-finished product obtained after mixing finer and make the finished product more hydrophobic, the compound fertilizer production system in this embodiment may also include a circulation pipeline 6, which is connected to the outlet of the mixing mechanism 4 and the first feeding mechanism 2, for transporting the semi-finished product along the circulation pipeline 6 to the first feeding mechanism 2.

[0052] Crushing mechanism 3 is also used for the cyclic crushing of semi-finished products;

[0053] The mixing mechanism 4 is also used for circulating mixing of semi-finished products and liquid additives. Since the circulation pipe 6 connects the outlet of the mixing mechanism 4 to the first feeding mechanism 2, the semi-finished product mixed by the mixing mechanism 4 can return to the first feeding mechanism 2 along the circulation pipe 6, and then re-enter the mixing mechanism 4 through the feeding mechanism. During this process, the semi-finished product is also crushed by the crushing mechanism 3, ensuring that the particles are small enough to prevent agglomeration. Unmixed solid raw materials are ground and crushed by the crushing mechanism 3 along with the circulating semi-finished product.

[0054] In some optional embodiments, to achieve mixing between the intermediate material and the liquid additive, the mixing mechanism 4 may specifically include a mixer 41 and a spraying device 42. The spraying device 42 includes at least two spray heads 421 communicating with the mixing chamber of the mixer 41. The spray heads 421 are used to pressurize and spray the liquid additive. The mixer 41 has a mixing chamber for receiving the intermediate material after it has been crushed by the crushing mechanism 3, the semi-finished product returned to the mixing chamber via a circulating conveying method, and the liquid additive to be mixed with the raw materials. To improve the uniformity of the liquid additive mixing, the mixing mechanism 4 includes a spraying device 42, which has at least two spray heads 421. The spray heads 421 can spray the liquid additive in an atomized form under pressure, thereby improving the uniformity of mixing between the liquid additive and the intermediate material and / or semi-finished product, and further improving the anti-caking performance of the product.

[0055] Because the liquid additive is sprayed through pressurized atomization within the mixing mechanism 4, the addition and atomization of the liquid additive require a large amount of compressed air, and this process takes place inside the mixing mechanism 4. During the atomization process, the compressed air inside the mixing mechanism 4 increases, and the pressure inside the mixing mechanism 4 increases accordingly. When the pressure reaches a certain value, gas will be ejected from the pressure cap, pipe opening, or seal of the mixing mechanism 4, and air pressure and dust will be ejected from areas with low pressure resistance. Especially at the packing seal, the environment will deteriorate due to seal damage in about two days, such as bearing damage caused by dust entering the bearing. To solve the above problems, this embodiment may also include a pressure balance pipe 7, which connects the mixing mechanism 4 and the feeding mechanism 1. Because the pressure balancing pipe 7 connects the mixing mechanism 4 and the feeding mechanism 1, the gas inside the sealed mixing mechanism 4 is introduced into the feeding mechanism 1, ensuring pressure balance inside and outside the mixing mechanism 4. Furthermore, the gas inside the mixer is discharged through the feeding mechanism 1, allowing the mixed intermediate material to re-enter the conveying pipe 10 along the feeding mechanism 1, and then re-enter the mixing mechanism 4 along the conveying pipe 10, the first feeding mechanism 2, and the feeding pipe 20. This ensures pressure balance while preventing dust leakage, avoiding material waste, and minimizing environmental impact. By installing the pressure balancing pipe 7, there is no leakage from the cover plate or pipe openings of the mixing mechanism 4, nor from the packing seal. This reduces the risk of long-term pressurized operation of the mixing mechanism 4, decreases the frequency of seal maintenance, and thus extends the equipment's lifespan.

[0056] In some optional embodiments, to enable the transport of solid raw materials, the compound fertilizer production system further includes an air compressor 8 and an extraction pipeline 80. The extraction pipeline 80 connects the air compressor 8 and the first feeding mechanism 2, and the air compressor 8 uses the extraction pipeline 80 to perform vacuum transport of the first feeding mechanism 2. By setting up the air compressor 8 and the extraction pipeline 80, and connecting the air pipeline between the air compressor 8 and the first feeding mechanism 2, the solid raw materials can be transported in the transport pipeline 10 by means of vacuum extraction based on the first feeding mechanism 2. During this process, a sealed connection is formed between the transport pipeline 10 and the first feeding mechanism 2 to prevent pressure leakage.

[0057] In some optional embodiments, the air compressor 8 may specifically include a Roots blower, which is located outdoors. The Roots blower generates significant noise during operation; depending on the distance from the blower, for example, at a distance of approximately 2 meters, the noise level can reach 70-80 dB. If installed indoors, such high noise levels could negatively impact the operator's hearing, potentially causing irreversible hearing damage. Therefore, this embodiment employs a separate air compressor system design, installing the Roots blower outdoors. This distance minimizes the noise generated by the blower, thus avoiding any impact on the operator's hearing and ensuring their safety to some extent. To further reduce noise, the compound fertilizer production system in this embodiment also includes a silencer 81, which is installed on the Roots blower. The silencer 81 further reduces the noise generated by the Roots blower. By placing the Roots blower outdoors, the indoor working environment noise level can be reduced from 80 dB to below 20 dB, providing a more suitable working environment for the operator.

[0058] In addition, placing the Roots blower outdoors can mitigate the impact of harsh outdoor environments by installing rainproof structures and protecting the air inlets; setting up heat dissipation and ventilation around the Roots blower can reduce indoor noise pollution and decrease the failure rate of the Roots blower, thereby extending its service life.

[0059] The packaging mechanism 5 is used to package the semi-finished products obtained from the mixing mechanism 4 to form the finished product. Specifically, to achieve packaging, the packaging mechanism 5 in this embodiment may include a second feeding mechanism 51, a packaging hopper 52, a packaging machine 53, and a sewing machine 54. The second feeding mechanism 51 is connected to the discharge pipe 40; the packaging hopper 52 is connected to the outlet of the second feeding mechanism 51 and to the packaging machine 53; the packaging machine 53 and the sewing machine 54 are connected via belt drive. The semi-finished products are transported to the packaging hopper 52 by the second feeding mechanism 51, packaged by the packaging machine 53, and sealed by the sewing machine 54 to form bagged compound fertilizer products.

[0060] In some alternative embodiments, to reduce dust in the environment, the compound fertilizer production system may further include a dust removal fan 14, which is installed at the feeding mechanism 1. The dust removal fan 14 can be a carbon steel 4-72 centrifugal fan with a motor power ranging from 2.2KW, a maximum air volume ranging from 4600m³ / h, and a maximum air pressure ranging from 1880Pa, providing good ventilation and essentially achieving standardization and dust-free operation of the feeding environment.

[0061] In the compound fertilizer production system described in this application, each piece of equipment / mechanism can be positioned in different locations according to the production environment. For example, the production plant can be set up with at least two floors, with the feeding mechanism 1, mixing mechanism 4, packaging machine 53, sewing machine 54, etc., installed on the first floor, and the first feeding mechanism 2, second feeding mechanism 51, packaging silo 52, etc., fixedly installed on the second floor, etc. Figure 1 As shown.

[0062] According to the compound fertilizer production system in this application embodiment, by setting a crushing mechanism 3 in the feeding pipeline 20 to pre-crush the solid raw materials, the liquid additives can adhere and penetrate into the interior of the raw materials more evenly and stably, resulting in a stronger coating and encapsulation effect on the fertilizer particles, which can effectively prevent clumping and thus improve the product yield.

[0063] The above-described specific examples are for illustrative purposes only and are not intended to limit the scope of this invention. Those skilled in the art to which this invention pertains can make various simple deductions, modifications, or substitutions based on the concept of this invention.

Claims

1. A compound fertilizer production system characterized by, include: Feeding mechanism, used for feeding solid raw materials; The first feeding mechanism is connected to the feeding mechanism via a conveying pipeline and is used for vacuum transfer of the solid raw material; the outlet of the first feeding mechanism is connected to the feeding pipeline. A crushing mechanism, installed in the feeding pipeline, is used to crush the solid raw material to form small particles of intermediate material; A mixing mechanism, connected to the feeding pipeline, is used to mix the intermediate material and liquid additives to form a semi-finished product; the outlet of the mixing mechanism is connected to the first feeding mechanism through a circulation pipeline. The packaging mechanism is connected to the outlet of the mixing mechanism via a discharge pipe and is used to package the semi-finished product.

2. The compound fertilizer production system as claimed in claim 1, characterized by, The mixing mechanism includes a mixer and a spraying device. The spraying device includes at least two spray heads that communicate with the mixing chamber of the mixer. The spray heads are used to spray the liquid additive under pressure.

3. The compound fertilizer production system as described in claim 1, characterized in that, The compound fertilizer production system also includes a circulation pipeline, which is connected to the outlet of the mixing mechanism and the first feeding mechanism, for transporting the semi-finished product along the circulation pipeline to the first feeding mechanism; The crushing mechanism is also used to perform cyclic crushing of the semi-finished product; The mixing mechanism is also used to perform a cyclic mixing process between the semi-finished product and the liquid additive.

4. The compound fertilizer production system as described in claim 1, characterized in that, It also includes a pressure balancing pipe, which connects the mixing mechanism and the feeding mechanism.

5. The compound fertilizer production system as described in claim 1, characterized in that, The feeding mechanism includes a feeding port and an auxiliary feeding platform connected to the feeding port. The auxiliary feeding platform has a bearing surface, which is an inclined surface that gradually rises in the direction away from the feeding port.

6. The compound fertilizer production system according to any one of claims 1-5, characterized in that, The compound fertilizer production system also includes an air compressor and an air extraction pipeline. The air extraction pipeline is connected to the air compressor and the first feeding mechanism. The air compressor provides vacuum transport to the first feeding mechanism through the air extraction pipeline.

7. The compound fertilizer production system as described in claim 6, characterized in that, The air compressor includes a Roots blower, which is located outdoors.

8. The compound fertilizer production system as described in claim 7, characterized in that, The compound fertilizer production system also includes a noise reduction device, which is installed on the Roots blower.

9. The compound fertilizer production system according to any one of claims 1-5, characterized in that, The packaging mechanism includes a second feeding mechanism, a packaging hopper, a packaging machine, and a sewing machine. The second feeding mechanism is connected to the discharge pipeline. The packaging hopper is connected to the outlet of the second feeding mechanism and to the packaging machine. The packaging machine and the sewing machine are connected by belt drive.

10. The compound fertilizer production system according to any one of claims 1-5, characterized in that, The compound fertilizer production system also includes a dust removal fan, which is installed at the feeding mechanism.

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