Novel cold spraying pellet coating device

Abstract

A novel cold spraying pellet coating device comprises a heat preservation cold chamber and a melting tank, and an air supply system and a refrigerating system are arranged in the heat preservation cold chamber; a high-speed rotating atomizing nozzle is mounted at the top of the heat preservation cold chamber; in conclusion, cooling air of a traditional cold spraying system cannot be reused, the system is not closed, air exchange with the outside exists, part of cold energy can be taken away, energy dissipation is caused, and the novel device is shorter in cooling time and higher in cooling efficiency; the device is low in manufacturing cost, and compared with an existing cold spraying system, the construction cost is reduced by 70%, the working efficiency is high, and the technical problem that a traditional cold spraying pellet coating process device pollutes the environment is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of cold spray micro-pill coating, and in particular relates to a novel cold spray micro-pill coating device. Background Art

[0002] The cold spray micro-pellet coating process is widely used in the fields of pharmaceuticals, agriculture, and chemicals, and is an important way to achieve the dosage process. Taking the feed industry in the agricultural field as an example, our country currently produces about 220 million tons of feed each year, and various nutritional additives and functional feed additives need to be added to the feed. Among the various functional additives, some high-efficiency additives that can replace feed antibiotics and promote growth are mostly chemically active, or easily oxidized and deteriorated, or easily volatile, or some have a pungent and irritating smell that makes animals refuse to eat or lose their appetite, or some nutrients need to be protected by the rumen for ruminants, etc. These functional additives all need to be coated.

[0003] Cold spray micro-pellet coating is the most commonly used process at present. It can meet the huge demand of the feed industry due to its high output. The traditional process flow is: after the air passes through the filter and the refrigeration device, it enters the air inlet distributor at the top of the cooling tower body. The cooling air (8℃ to 18℃) from the air inlet distributor enters the cooling chamber in a spiral shape evenly. At the same time, the molten material is sent to the centrifugal spray head installed on the top of the cooling chamber by the pump. The liquid is sprayed into very small particles, which greatly increases the surface area of ​​the molten particles in contact with the cold air. The small particles and the cold air flow down together. The molten particles are quickly condensed into solid particles in a very short time and captured at the bottom of the tower and in the cyclone separator. , the waste gas is discharged to the outside; the current traditional cold spray micro-pellet coating system takes in air from the air inlet, passes through the first and second level cyclones to blow the materials, and finally discharges the waste gas to the outside through the exhaust port. A small amount of materials will be entrained in the waste gas, which not only brings waste, but also causes environmental pollution. Some volatile essential oil components usually have a strong irritating odor. During large-scale production, the odor of the essential oil will drift with the wind, which often causes complaints from residents around the factory. Therefore, the traditional cold spray micro-pellet coating process equipment has the defects of high cost, low work efficiency and environmental pollution. Utility Model Content

[0004] The utility model aims to provide a novel cold spray micro-pellet coating device to solve the technical problems of the existing cold spray micro-pellet coating process device, such as high cost, low working efficiency, environmental pollution and the like.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A novel cold spray pellet coating device comprises a heat preservation cold chamber and a melting tank, wherein the heat preservation cold chamber is provided with an air supply system and a refrigeration system;

[0007] A high-speed rotating atomizing nozzle is installed on the top of the heat preservation cold chamber, the melting tank is connected with a pressure pump through a pipeline, and the pressure pump is connected with the high-speed rotating atomizing nozzle through a pipeline.

[0008] Furthermore, the refrigeration system includes an evaporator and a condenser, the condenser is arranged outside the heat preservation cold room, the evaporator is arranged inside the heat preservation cold room, and the condenser is connected to the evaporator.

[0009] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model aims to design a low-cost, high-efficiency, pollution-free new cold spray micro-pellet coating process device, which combines traditional cold spray micro-pellet coating equipment with professional cold storage, wherein material melting, conveying, centrifugal spray head, product collection and other parts are the same as traditional devices, and the cold air system and cold room part are changed into professional cold storage, which improves the refrigeration efficiency and greatly reduces the energy consumption; taking the output of 200 kg per hour as a practical verification case, the cost of the new process device is about 700,000 yuan compared with the traditional process device, and the traditional process device requires more than 2 million yuan, and the cost is reduced by 60-70%, which is only about 30% of the traditional process device; the operating temperature of the traditional device is 8°C to 18°C, and the refrigeration system includes an air inlet fan, an exhaust fan, a wind distribution motor, a first-stage cyclone fan, etc., with a total power energy consumption of 120.7 kWh, and the operating temperature of the utility model is -20°C to -22 ℃, the refrigeration system only has the outdoor unit condenser and the indoor evaporator, with a total power consumption of 31.95 kWh; because the cold room system is closed, the airflow does not communicate with the outside world, and the refrigeration efficiency is high. When the same cooling capacity is required, the energy consumption is only about 25% of the traditional device. The mechanism of energy saving of 75% lies in three aspects: first, the traditional cold spray system equipment is large and complex, and the heat dissipation surface area is more than twice that of the new device, which is a 15 mm stainless steel tower body. The new device uses 150 mm professional cold storage polyurethane insulation material; second, the cooling air of the traditional cold spray system cannot be reused, the system is not closed, and there is gas exchange with the outside world, which will take away part of the cold capacity and cause energy dissipation; third, the operating temperature of the traditional cold spray system is 30-40℃ different from that of the new device. The new device has a shorter cooling time and higher cooling efficiency. The flight time of the microbead particles in the cold air is shortened by more than 60%, which greatly reduces the heat dissipation time;

[0010] In short, the utility model is low-cost, and compared with the existing cold spray system, the construction cost is reduced by 70%, the working efficiency is high, and the technical problem of environmental pollution of the traditional cold spray micro-pellet coating process device is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0012] Figure 1 This is a schematic diagram of the structure of a novel cold spray micro-pellet coating device of the utility model;

[0013] Figure 2 This is a top view of a novel cold spray micro-pellet coating device of the utility model;

[0014] Figure 3 The utility model is a production process flow chart of a new type of cold spray micro-pellet coating device. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] The present invention is further described in detail below in conjunction with the embodiments.

[0017] like Figure 1 and Figure 2 As shown, a specific embodiment 1 of a novel cold spray pellet coating device provided by the utility model:

[0018] A novel cold spray pellet coating device comprises a heat preservation cold chamber 1 and a melting tank 2, wherein the heat preservation cold chamber 1 is provided with an air supply system and a refrigeration system;

[0019] The refrigeration system includes an evaporator 3 and a condenser 4. The condenser 4 is arranged outside the heat preservation cold room 1, and the evaporator 3 is arranged inside the heat preservation cold room 1. The condenser 4 is connected to the evaporator 3.

[0020] A high-speed rotating atomizing nozzle 5 is installed on the top of the heat preservation cold chamber 1, and the melting tank 2 is connected to a pressure pump 6 through a pipeline, and the pressure pump 6 is connected to the high-speed rotating atomizing nozzle 5 through a pipeline.

[0021] like Figure 3As shown, the process flow of the use of the new cold spray micro-pellet coating device of this embodiment is as follows: the effective ingredient is added to the melting tank 2 as the core material according to the proportion, heated to 70°C-75°C, and then stearic acid, monoglyceride and other coating materials are added, and the coating materials are stirred after melting; the mixture is transported to the high-speed rotating atomizing nozzle 5 in the heat-insulating cold chamber 1 through the pressure pump 6, and the rotation speed of the high-speed rotating atomizing nozzle 5 is 2000-3000 rpm. The mixture of essential oil and stearic acid is atomized and sprayed out, encountering the low-temperature cold air flow (working temperature is between -20°C and -22°C) in the heat-insulating cold chamber 1, condensed and fell, and the cold air in the heat-insulating cold chamber 1 is driven by the air supply system. The high-speed circulation between the surface of the material micro-beads and the surface of the evaporator 3, the heat of the material is taken away by the evaporator 3, and the temperature of the heat-insulating cold chamber 1 is maintained below -20°C; after the cold spray is completed, the bead-shaped condensed material particles are collected in a carton containing an inner lining belt, packaged and finished products.

[0022] The following uses the production of cysteamine hydrochloride and plant essential oil as an example to specifically explain the use of the new cold spray micropellet coating device (other types of products are similar):

[0023] When producing cysteamine hydrochloride, the recommended temperature of the melting tank 2 is 73°C, and the recommended formula is: monoglyceride 22, cysteamine hydrochloride 33%, solid acid 12.5%, stearic acid 32.5%, antioxidant 0.5%, totaling 100.5, of which 0.5% is loss margin;

[0024] By adjusting the frequency conversion of the pressure pump 6, the balance between the cooling capacity and the heat dissipation of the material is ensured, the frequency is 3.0-4 Hz, and the speed is 2700 rpm; after adjusting the frequency first, start to feed the material through the pump so that it will not be sprayed on the wall. The working temperature is around -22℃ and it will not hang on the wall.

[0025] The preparation temperature in the insulation cold room 1 is 29℃-31℃, the initial feeding frequency is 17 Hz, and the optimal balanced working temperature is 20-22℃. After 80% of the material is sprayed out, the temperature in the insulation cold room 1 will drop significantly for a short time. This is due to the reduction of material pressure. The flow rate should not be increased, but the working rhythm of the refrigeration system should be properly adjusted to adjust the refrigeration temperature to the automatic control level of 20℃-22℃.

[0026] When producing essential oils for feed, the recommended temperature of the melting tank 2 is 70°C, and the semi-recommended formula is: carvacrol 14, thymol 13%, solid acid 5%, stearic acid 63%, antioxidant 0.5%, silicon dioxide 5.5%, totaling 100.5, of which 0.5% is the loss margin.

[0027] First add thymol, solid acid and stearic acid into melting tank 2. After all components are melted, add antioxidant and carvacrol, stir, discharge, and when it is confirmed that the discharge can be smooth, add silicon dioxide to ensure successful spraying.

[0028] It should be noted that, in this article, terms such as "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0029] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new type of cold spray pellet coating device, characterized by: It includes a heat preservation cold room and a melting tank, and the heat preservation cold room is provided with an air supply system and a refrigeration system; A high-speed rotating atomizing nozzle is installed on the top of the heat preservation cold chamber, the melting tank is connected with a pressure pump through a pipeline, and the pressure pump is connected with the high-speed rotating atomizing nozzle through a pipeline.

2. A novel cold spray micro-pellet coating device according to claim 1, characterized in that: The refrigeration system comprises an evaporator and a condenser. The condenser is arranged outside the heat preservation cold room, and the evaporator is arranged inside the heat preservation cold room. The condenser is connected to the evaporator.

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