Continuous hot air roasting machine

Abstract

The utility model relates to the field of food and feed processing, and provides a continuous hot air roasting machine, which comprises a roller, a heater, a circulating fan, an air filter and the like, the roller is formed by rolling a perforated plate or a screen, a spiral sheet for stirring is arranged in the roller, the outer edge of the spiral sheet is connected with the perforated plate or the screen, and the outer edge of the spiral sheet is connected with the air filter. A steel connecting rod is arranged on the spiral piece in a penetrating mode in the horizontal direction, the steel connecting rod is connected with a transmission shaft in the center of the roller through a supporting frame, a heating chamber is arranged below or on the side face of the roller, a heater is arranged in the heating chamber, a circulating fan pumps air in the roller to the heater for heating, the air is blown back into the roller after being heated, and heating is conducted in a circulating mode. According to the utility model, corn (popcorn is obtained after corn is puffed), rice, millet, sorghum, peanuts, melon seeds, beans and the like can be continuously and automatically fried by hot air at normal pressure, puffed and micro-puffed food or cured food and feed can be obtained after frying, and the novel food frying machine is convenient to operate and reliable to use.

Description

Technical Field

[0001] This utility model relates to the field of food and feed processing, specifically to a continuous hot air roasting machine for nuts and seeds. Background Technology

[0002] Existing roasting machines, such as the new type of roasting machine disclosed in ZL202320698940.7, require the addition of salt or sand as a heat transfer medium. When roasting foods such as sunflower seeds, it is easy for sand or salt to get trapped. The sand or salt may also adhere to the inner wall of the roasting machine, producing burnt impurities. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a continuous hot air roasting machine that can continuously and automatically roast corn (corn is puffed to obtain popcorn), rice, millet, sorghum, peanuts, sunflower seeds, beans, etc. with hot air at normal pressure. After roasting, they become puffed or micro-puffed foods, or cooked foods or feed. It is easy to operate and reliable to use.

[0004] The purpose of this utility model is achieved through the following technical measures: A continuous hot air roasting machine includes a drive motor, a feeding device, a drum, a heater, a circulating fan, an air filter, and a slag discharge screw. The drum is made of a perforated plate or a screen, and a stirring spiral blade is provided inside the drum. The outer edge of the spiral blade is connected to the perforated plate or screen. A steel connecting rod is passed through the spiral blade in a horizontal direction. The steel connecting rod is connected to the drive shaft at the center of the drum through a support frame. When the drive shaft is driven to rotate by the motor, the drum and the spiral blade fixed inside the drum rotate together. A heating chamber is provided below or on the side of the drum, and a heater is provided inside the heating chamber. The circulating fan draws the air inside the drum to the heater for heating, and then blows it back into the drum, thus circulating the heating process.

[0005] In the above technical solution, an air filter is provided at the air inlet of the heating chamber to filter impurities in the air drawn from the drum.

[0006] In the above technical solution, the roller is provided with a guide plate at the air outlet of the circulating fan to guide hot air into the roller.

[0007] In the above technical solution, the feeding device is a screw feeder or a vibrating feeder.

[0008] Compared with the prior art, the continuous hot air roasting machine of this invention has the following advantages:

[0009] 1. Using air heat transfer, no salt or sand is needed, and no impurities will adhere to the inner wall of the roasting machine drum. No additional salt or sand will be added to the roasted food or feed due to the roasting process.

[0010] 2. It uses a large amount of hot air and a spiral that rotates and stirs continuously, so the materials are heated evenly and quickly when frying.

[0011] 3. A steel connecting rod is added to the spiral blade, which not only connects the spiral blade but also serves to center and fix the main shaft. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the roasting machine of this utility model.

[0013] Figure 2 This is a schematic diagram of the other side of the roasting machine of this utility model.

[0014] Figure 3 This is a schematic diagram of the hot air circulation of the roasting machine of this utility model.

[0015] Figure 4 This is a schematic diagram of the structure of the roller and spiral blade of this utility model.

[0016] Wherein: 1-Feeding device; 2-Drum; 3-Circulating fan; 3.1-Circulating fan motor; 3.2-Circulating fan impeller; 4-Inspection door; 5-Electrical control box; 6-Air filter; 7-Heater; 8-Air guide plate; 9-Steel connecting rod; 10-Support frame; 11-Drive shaft; 12-Feeding cylinder. Detailed Implementation

[0017] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0018] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0020] like Figures 1 to 4 As shown, this embodiment of a continuous hot air roasting machine includes a drive motor, a feeding device 1, a drum 2, a heater, a circulating fan 3, an air filter 6, and a slag discharge screw. The drum 2 is made of a perforated plate or screen. A stirring screw is provided inside the drum 2. The outer edge of the screw is connected to the perforated plate or screen. Two steel connecting rods 9 are horizontally inserted on the screw. The steel connecting rods 9 are connected to the drive shaft 11 at the center of the drum through a support frame 10. When the drive shaft 11 is driven to rotate by the motor, the drum 2 and the screw fixed inside the drum rotate together. A heating chamber is provided below the drum 2. A heater 7 is provided inside the heating chamber. An air filter 6 is provided at the air inlet of the heating chamber. The circulating fan 3 draws the air inside the drum to the heater 7 for heating. After heating, the air is blown back into the drum 2 and drawn back to the heater 7 by the circulating fan 3 for heating again. This cycle is repeated to achieve the heating, roasting, or puffing of foods such as sunflower seeds, soybeans, and corn.

[0021] In this embodiment, the steel connecting rod 9 can be round steel, angle steel, square tube, or square steel, and there can be two or more rods.

[0022] In this embodiment, as Figure 3 As shown, the roller is provided with a guide plate 8 at the air outlet of the circulating fan. The guide plate 8 serves to block and guide the wind, and is used to introduce hot air into the roller.

[0023] In this embodiment, the feeding device is a screw feeder or a vibrating feeder.

[0024] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A continuous hot air roasting machine, comprising a drive motor, a feeding device, a drum, a heater, a circulating fan, an air filter, and a slag discharge screw, characterized in that: The drum is made of a perforated plate or screen. A stirring spiral blade is installed inside the drum, with its outer edge connected to the perforated plate or screen. A steel connecting rod is threaded horizontally through the spiral blade. The steel connecting rod is connected to a drive shaft at the center of the drum via a support frame. When the drive shaft is driven to rotate by a motor, the drum and the fixed spiral blade inside the drum rotate together. A heating chamber is located below or on the side of the drum, containing a heater. A circulating fan draws air from inside the drum to the heater for heating, and then blows it back into the drum, repeating this heating cycle. An air filter is installed at the air inlet of the heating chamber, and a guide plate is installed at the air outlet of the drum facing the circulating fan to guide hot air into the drum.

2. The continuous hot air roasting machine according to claim 1, characterized in that: Two or more steel connecting rods are threaded through the spiral blade.

3. The continuous hot air roasting machine according to claim 1, characterized in that: The feeding device is a screw feeder or a vibrating feeder.

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