A flaxseed roasting device that retards oxidation of the oil

Abstract

The utility model discloses a kind of flaxseed baking devices for delaying grease oxidation, it relates to high-temperature baking technical field, including tunnel type microwave baking machine, still including inert gas tank, the feed mechanism of being set in the input end of tunnel type microwave baking machine, and the cooling mechanism of being set in the output end of tunnel type microwave baking machine, the input and output end of the tunnel type microwave baking machine is fixedly installed with sealing plate, the top of tunnel type microwave baking machine is equipped with the air inlet being linked with inert gas tank, bottom is equipped with air outlet, and air inlet and air outlet are all equipped with solenoid valve in it.The flaxseed baking device for delaying grease oxidation, by the input and output end of tunnel type microwave baking machine is set sealing plate, by top air inlet injection nitrogen forms "upper progress lower output" gas circulation, ensure that oxygen concentration in baking cavity is always lower than 2%, from source, block flaxseed and air contact, avoid grease oxidation.

Description

Technical Field

[0001] This utility model relates to the field of high-temperature baking technology, specifically to a flaxseed baking device that delays oil oxidation. Background Technology

[0002] Traditional flaxseed is usually roasted in an open environment. Flaxseed is continuously exposed to air at a high temperature of 160°C, which causes the oil oxidation reaction to accelerate exponentially, resulting in excessive peroxide value and a rancid smell.

[0003] Therefore, it is necessary to propose a flaxseed roasting device that delays oil oxidation to solve the above problems. Utility Model Content

[0004] Technical problem to be solved: The purpose of this utility model is to provide a flaxseed roasting device that delays oil oxidation, so as to solve the problem mentioned in the background art that flaxseeds are continuously exposed to air at a high temperature of 160°C, resulting in excessive peroxide value and rancidity.

[0005] Technical Solution: To achieve the above objectives, this utility model provides the following technical solution: A flaxseed roasting device for delaying oil oxidation, comprising a tunnel microwave roaster, an inert gas tank, a feeding mechanism disposed at the input end of the tunnel microwave roaster, and a cooling mechanism disposed at the output end of the tunnel microwave roaster. Both the input and output ends of the tunnel microwave roaster are fixedly equipped with sealing plates. The top of the tunnel microwave roaster has an air inlet connected to the inert gas tank, and the bottom has an air outlet, both of which are equipped with solenoid valves. The output end of the feeding mechanism passes through the sealing plate and extends above the conveyor belt of the tunnel microwave roaster. The cooling mechanism... The system includes a straight tee, a cooling pipe, and a hopper located below the output end of the conveyor belt of the tunnel-type microwave baking machine. The output end of the hopper passes through a sealing plate and connects to a branch port of the straight tee. A flow valve is installed inside the output port of the hopper. A cold air fan is fixedly installed on one of the straight ports of the straight tee, and the other straight port is connected to the cooling pipe along the tangent direction of the cooling pipe. A support pipe is concentrically installed inside the cooling pipe. Both ends of the support pipe are fixedly fitted with ring platforms. The cooling pipe, the support pipe, and the two ring platforms together form a sealed annular cavity. A spiral heat dissipation plate is spirally wound inside the annular cavity. A discharge pipe communicating with the interior of the cooling pipe is fixedly installed on the upper part of the cooling pipe.

[0006] Preferably, the material conveying mechanism includes a connecting pipe fixedly installed on the sealing plate, with a material conveying component fixedly connected to one exposed end of the connecting pipe and a baffle provided at the other end, and the upper end of the baffle is hinged to the connecting pipe.

[0007] Preferably, the feeding assembly includes a feed pipe fixedly connected to the connecting pipe, a servo motor fixedly installed at the other end of the feed pipe, an auger rotatably installed inside the feed pipe, the auger being drivenly connected to the servo motor, a feed hopper provided above the feed pipe, and the output end of the feed hopper communicating with the interior of the feed pipe.

[0008] Preferably, a scraper is provided above the conveyor belt of the tunnel microwave baking machine, and the scraper is located at the input end of the conveyor belt of the tunnel microwave baking machine. Transparent observation windows are provided on both sides of the shell of the tunnel microwave baking machine.

[0009] Preferably, the output end of the hopper is provided with an L-shaped discharge pipe, the other end of which passes through the sealing plate and is connected to the branch port of the straight tee. The lower part of the cooling pipe is fixedly installed with a connecting pipe communicating with its interior along its tangential direction, and the other end of the connecting pipe is fixedly connected to the straight port of the straight tee.

[0010] Preferably, the output end of the air cooler is provided with a wind shroud, which is a rotating body with a conical front end and a cylindrical rear end, and the small end of the wind shroud is connected to the straight port of the straight tee.

[0011] Preferably, the cooling pipe, support pipe, and spiral heat sink are all made of bent aluminum alloy sheet.

[0012] Beneficial effects: Compared with the prior art, this utility model provides a flaxseed roasting device that delays oil oxidation. This flaxseed roasting device has a unique structure and is easy to use. On the one hand, by setting sealing plates at the input and output ends of the tunnel microwave roaster, nitrogen is injected through the top air inlet to form a "top in, bottom out" gas circulation. The parameter design of nitrogen exchange rate ≥3 times / hour ensures that the oxygen concentration in the roasting chamber is always below 2%, blocking the contact between flaxseed and air from the source and avoiding oil oxidation. The precise control of the solenoid valve makes the gas circulation synchronized with the material conveying, forming a dynamic sealed environment.

[0013] On the other hand, the conveying mechanism adopts a combination of auger and servo motor, and achieves precise control of flaxseed conveying volume through frequency conversion speed regulation. The specially designed baffle automatically closes the conveying channel when the machine stops. In conjunction with the linkage of the flow valve and the control system, it ensures that the hopper always maintains an appropriate amount of material, which not only prevents nitrogen leakage, but also avoids local overheating caused by material accumulation.

[0014] In addition, when the flax seeds are roasted at high temperature and enter the cooling mechanism, they move along the spiral channel composed of cooling pipes, support pipes and spiral heat dissipation plates under the negative pressure generated by the cold air fan. The high thermal conductivity of the aluminum alloy material, combined with the chimney effect, allows the material temperature to drop rapidly from 160°C to below 40°C, achieving a seamless connection between "roasting and cooling", which greatly reduces the generation of rancidity and extends the shelf life. Attached Figure Description

[0015] Figure 1 This is a three-dimensional front view schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a three-dimensional side view of the structure of this utility model;

[0017] Figure 3 This is a three-dimensional cross-sectional schematic diagram of the tunnel-type microwave baking machine of this utility model;

[0018] Figure 4 This is a cross-sectional schematic diagram of the cooling pipe structure of this utility model;

[0019] Figure 5 This utility model Figure 2 Enlarged schematic diagram of the structure in area A.

[0020] In the diagram: 1. Tunnel-type microwave baking machine; 2. Conveying mechanism; 21. Feed pipe; 22. Feed hopper; 23. Screwdriver; 24. Servo motor; 25. Connecting pipe; 26. Baffle; 3. Cooling mechanism; 31. Collecting hopper; 32. Flow valve; 33. Discharge pipe; 34. Straight tee; 35. Air hood; 36. Air cooler; 37. Connecting pipe; 38. Cooling pipe; 39. Support pipe; 310. Spiral heat sink; 311. Discharge pipe; 312. Ring platform; 4. Solenoid valve; 5. Sealing plate; 6. Scraper. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Example 1: This Example 1 provides a flaxseed roasting apparatus that delays oil oxidation. It is a direct improvement on existing roasting apparatus and has a unique structure. Please refer to [link / reference]. Figure 1-5 As shown, the device includes a tunnel microwave roaster 1, which is an existing device. Its internal structure and working principle will not be described in detail. It also includes an inert gas tank, a feeding mechanism 2 located at the input end of the tunnel microwave roaster 1, and a cooling mechanism 3 located at the output end of the tunnel microwave roaster 1. Both the input and output ends of the tunnel microwave roaster 1 are fixedly equipped with sealing plates 5. The top of the tunnel microwave roaster 1 is provided with an air inlet connected to the inert gas tank, and the bottom is provided with an air outlet. Both the air inlet and the air outlet are equipped with solenoid valves 4. The inert gas can be nitrogen or carbon dioxide. In this solution, nitrogen is selected. The gas exchange rate of nitrogen is ≥3 times / hour, forming an inert gas circulation channel of "top in and bottom out" to prevent flaxseed from contacting air during high-temperature roasting, which would cause the oil to oxidize and produce a rancid smell.

[0023] The output end of the conveying mechanism 2 passes through the sealing plate 5 and extends above the conveyor belt of the tunnel microwave roaster 1. The cooling mechanism 3 includes a straight tee 34, a cooling pipe 38, and a collection hopper 31 located below the output end of the conveyor belt of the tunnel microwave roaster 1. The output end of the collection hopper 31 passes through the sealing plate 5 and is connected to a branch port of the straight tee 34. A flow valve 32 is provided in the output port of the collection hopper 31. A cold air fan 36 is fixedly installed on one of the straight ports of the straight tee 34, and the other straight port is connected to the cooling pipe 38 along the tangent direction of the cooling pipe 38. The conveying mechanism 2 and the cooling mechanism 3 are both connected to the control system of the tunnel microwave roaster 1, so that the outflow of the flow valve 32 is slightly less than the conveying capacity of the conveying mechanism 2, thereby ensuring that there are always flax seeds in the collection hopper 31, thus preventing nitrogen from overflowing from the collection hopper 31 into the tunnel microwave roaster 1.

[0024] Inside the cooling pipe 38, a support pipe 39 is concentrically arranged. Both ends of the support pipe 39 are fixedly fitted with annular platforms 312. The cooling pipe 38, the support pipe 39, and the two annular platforms 312 together form a closed annular cavity. Inside the annular cavity, a spiral heat dissipation plate 310 is spirally wound. The upper part of the cooling pipe 38 is fixedly installed with a discharge pipe 311 communicating with its interior. By setting the support pipe 39 to be hollow, when the high-temperature flax seeds continuously dissipate heat through the spiral channel formed by the annular cavity and the spiral heat dissipation plate 310, the temperature of the support pipe 39 will gradually rise, thereby forming a chimney effect inside the support pipe 39, accelerating the air flow rate inside the support pipe 39, and allowing the heat inside the support pipe 39 to be dissipated quickly.

[0025] The feeding mechanism 2 includes a connecting pipe 25 fixedly installed on the sealing plate 5. One exposed end of the connecting pipe 25 is fixedly connected to a feeding component, and the other end is provided with a baffle 26. The upper end of the baffle 26 is hinged to the connecting pipe 25 by a hinge. When the feeding mechanism 2 stops feeding, the baffle 26 will seal the output end of the connecting pipe 25 under the action of gravity, thereby preventing the leakage of inert gas in the tunnel microwave baking machine 1.

[0026] The feeding assembly includes a feed pipe 21 connected to the flange of the connecting pipe 25. A servo motor 24 is fixedly installed at the other end of the feed pipe 21. An auger 23 is rotatably installed inside the feed pipe 21 via a bearing. The auger 23 and the servo motor 24 are connected by a coupling. A feed hopper 22 is provided above the feed pipe 21, and the output end of the feed hopper 22 is connected to the inside of the feed pipe 21. The feed hopper 22 is welded to the feed pipe 21.

[0027] A scraper 6 is provided above the conveyor belt of the tunnel microwave roaster 1. The scraper 6 is located at the input end of the conveyor belt of the tunnel microwave roaster 1 and is used to spread the flax seeds flat. Transparent observation windows are provided on both sides of the shell of the tunnel microwave roaster 1 to facilitate observation of the drying status of the flax seeds.

[0028] The output end of the hopper 31 is provided with an L-shaped discharge pipe 33. The other end of the discharge pipe 33 passes through the sealing plate 5 and is connected to the branch port flange of the straight tee 34. The lower part of the cooling pipe 38 is welded with a connecting pipe 37 that communicates with its interior along its tangential direction. The other end of the connecting pipe 37 is connected to the straight port flange of the straight tee 34.

[0029] Working Principle: When using this device to roast flaxseed, first connect the roasting device to an external power source. Then, pour the flaxseed into the feed hopper 22, start the servo motor 24, which drives the auger 23 to rotate, thus conveying the flaxseed onto the conveyor belt inside the tunnel microwave roaster 1. The scraper 6 flattens the accumulated flaxseed to ensure even heating. The flaxseed is roasted on the conveyor belt, and the roasted flaxseed is poured directly into the collection hopper 31. The flaxseed flows into the discharge pipe 33 through the flow valve 32. Because the straight port of the straight tee 34 is connected to the air cooler 36, the straight tee 34... A negative pressure is generated within the branch port, which draws the flax seeds from the discharge pipe 33 into the straight tee 34 and then transports them to the cooling pipe 38 via the connecting pipe 37. Under the action of the cold air blower 36, the flax seeds spiral upward along the spiral channel formed by the annular cavity and the spiral heat dissipation plate 310, rapidly cooling the high-temperature flax seeds from 160℃ to below 40℃, achieving "instant cooling after baking". Flaxseed baking products using this solution have a 60% reduction in peroxide value, an extension of the rancidity detection time from 7 days to 28 days, and a shelf life increase of over 300%. The cooled flax seeds are discharged from the discharge pipe 311 and then proceed to the next step.

[0030] Example 2: The difference between Example 2 and Example 1 is as follows: Figure 2 and 5 As shown, a fan shroud 35 is welded to the output end of the air cooler 36. The fan shroud 35 is a rotating body with a conical front end and a cylindrical rear end. The small end of the fan shroud 35 is connected to the straight port flange of the straight tee 34. The fan shroud 35 increases the flow rate of the cold air, thereby enhancing the heat dissipation effect. The cooling pipe 38, the support pipe 39, and the spiral heat dissipation plate 310 are all made of bent aluminum alloy plates, which further dissipate heat through heat conduction and improve the heat dissipation rate.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flaxseed roasting apparatus for delaying oil oxidation, comprising a tunnel microwave roaster (1), characterized in that: It also includes an inert gas tank, a material conveying mechanism (2) installed at the input end of the tunnel microwave baker (1), and a cooling mechanism (3) installed at the output end of the tunnel microwave baker (1). The input and output ends of the tunnel microwave baker (1) are both fixedly equipped with sealing plates (5). The top of the tunnel microwave baker (1) is provided with an air inlet connected to the inert gas tank, and the bottom is provided with an air outlet. Both the air inlet and the air outlet are equipped with solenoid valves (4). The output end of the material conveying mechanism (2) passes through the sealing plate (5) and extends to the top of the conveyor belt of the tunnel microwave baker (1). The cooling mechanism (3) includes a straight tee (34), a cooling pipe (38), and a collection hopper (31) installed below the output end of the conveyor belt of the tunnel microwave baker (1). The collection hopper (31) 1) The output end passes through the sealing plate (5) and is connected to the branch port of the straight tee (34). The output port of the hopper (31) is equipped with a flow valve (32). A cold air fan (36) is fixedly installed on one of the straight ports of the straight tee (34). The other straight port is connected to the cooling pipe (38) along the tangent direction of the cooling pipe (38). The cooling pipe (38) is concentrically equipped with a support pipe (39). Both ends of the support pipe (39) are fixedly fitted with ring platforms (312). The cooling pipe (38), the support pipe (39), and the two ring platforms (312) together form a closed annular cavity. The annular cavity is spirally coiled with a spiral heat dissipation plate (310). The upper part of the cooling pipe (38) is fixedly equipped with a discharge pipe (311) that communicates with its interior.

2. The flaxseed roasting apparatus for delaying oil oxidation according to claim 1, characterized in that: The material conveying mechanism (2) includes a connecting pipe (25) fixedly installed on the sealing plate (5). One end of the connecting pipe (25) is fixedly connected to a material conveying component, and the other end is provided with a baffle (26). The upper end of the baffle (26) is hinged to the connecting pipe (25).

3. The flaxseed roasting apparatus for delaying oil oxidation according to claim 2, characterized in that: The feeding assembly includes a feed pipe (21) fixedly connected to the connecting pipe (25). A servo motor (24) is fixedly installed at the other end of the feed pipe (21). An auger (23) is rotatably installed inside the feed pipe (21). The auger (23) is connected to the servo motor (24) in a transmission connection. A feed hopper (22) is provided above the feed pipe (21), and the output end of the feed hopper (22) is connected to the inside of the feed pipe (21).

4. The flaxseed roasting apparatus for delaying oil oxidation according to claim 1, characterized in that: The tunnel microwave baking machine (1) has a scraper (6) above the conveyor belt. The scraper (6) is located at the input end of the conveyor belt of the tunnel microwave baking machine (1). The tunnel microwave baking machine (1) has transparent observation windows on both sides of its shell.

5. The flaxseed roasting apparatus for delaying oil oxidation according to claim 1, characterized in that: The output end of the hopper (31) is provided with an L-shaped discharge pipe (33). The other end of the discharge pipe (33) passes through the sealing plate (5) and is connected to the branch port of the straight tee (34). The lower part of the cooling pipe (38) is fixedly installed with a connecting pipe (37) that communicates with its interior along its tangential direction. The other end of the connecting pipe (37) is fixedly connected to the straight port of the straight tee (34).

6. The flaxseed roasting apparatus for delaying oil oxidation according to claim 1, characterized in that: The output end of the air cooler (36) is provided with a wind shroud (35), which is a rotating body with a conical front end and a cylindrical rear end. The small end of the wind shroud (35) is connected to the straight port of the straight tee (34).

7. The flaxseed roasting apparatus for delaying oil oxidation according to claim 1, characterized in that: The cooling pipe (38), support pipe (39) and spiral heat sink (310) are all made of bent aluminum alloy sheet.

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