Efficient chestnut roasting machine

Abstract

The utility model relates to a kind of efficient chestnut roasting machine, including roller system, heating system, screening system and control system;The roller system includes roller, cover plate, heat preservation frame, pivot and motor, and the heating system includes roasting machine frame and electric heating device, and the screening system includes screening frame and sieve plate, and the control system includes control box, and the roasting machine frame one side is set screening frame, and the other side is set control box.The utility model is heated by spiral structure inside roller, arc arrangement electric heating tube heating system, cover plate design and convenient screening mechanism with controllable moisture loss, realizes the efficient, uniform roasting of chestnut.

Description

Technical Field

[0001] This utility model relates to the field of food processing machinery and equipment technology, and in particular to a high-efficiency chestnut roasting machine, a chestnut roasting equipment that achieves uniform heating, automatic stirring and convenient discharge. Background Technology

[0002] Chestnut roasting, a traditional food processing technique, works by uniformly heating the chestnuts to gelatinize the starch and convert the sugars, while simultaneously dehydrating them to create a unique sweet flavor. However, existing roasting equipment has several technical limitations. (1) Poor heating uniformity: Direct-fired roasting machines use open flames to directly heat the drum, resulting in low thermal efficiency and uneven heating, which can easily lead to chestnuts being burnt on the outside but raw on the inside. In a flat-lay roasting machine, the heating tubes are arranged in parallel at the bottom of the drum, resulting in uneven heat distribution. The upper chestnuts are not heated enough, while the lower chestnuts are easily burnt. (2) Low temperature control accuracy: Traditional equipment has large temperature fluctuations, which affects the stability of the stir-frying quality; (3) Difficulty in controlling moisture: Open structure: Traditional roasting machines have poor sealing, causing moisture to evaporate too quickly, resulting in chestnuts losing a lot of moisture and having a dry and hard texture; Temperature and humidity mismatch: The contradiction between heating and moisturizing is prominent, making it difficult to achieve the ideal "dry outside and moist inside" effect; (4) Inconvenient material separation during discharge: Manual sieving: After roasting, chestnuts need to be separated from the roasting medium (pebbles) manually, which is labor-intensive; Fixed screen: The screen is integrated with the drum, making it difficult to clean and prone to leaving impurities; Low separation efficiency: Traditional vibrating screen mechanisms are complex and have a high failure rate; (5) Low energy efficiency: Poor thermal insulation performance: The equipment suffers from severe heat dissipation and significant heat loss; The heating method is crude: it lacks precise temperature control and results in serious energy waste; Low production efficiency: Traditional equipment takes 45-60 minutes to produce 25 jin of chestnuts, resulting in high energy costs.

[0003] Existing technologies, such as the novel chestnut roasting machine disclosed in patent CN2016100566259, although improving the heating method, still suffer from problems such as uneven temperature and difficulty in moisture control; patent CN2005200153573 discloses a chestnut roasting machine that adopts a simple drum structure, but the roasting effect is not ideal. Therefore, there is an urgent need to develop a high-efficiency chestnut roasting device that can comprehensively solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a high-efficiency chestnut roasting machine with advantages such as high roasting efficiency, good product quality, convenient operation, and low energy consumption. It is particularly suitable for commercial chestnut roasting production and has significant economic benefits and market competitiveness.

[0005] The purpose of this utility model is achieved as follows: A high-efficiency chestnut roasting machine includes a drum system, a heating system, a sieving system, and a control system. The drum system includes a drum, a cover plate, a heat-insulating frame, a rotating shaft, and a motor. The heating system includes a roasting frame and an electric heating device. The sieving system includes a sieving frame and a sieve plate. The control system includes a control box. The sieving frame is installed on one side of the roasting frame, and the control box is installed on the other side. Roller system: The drum is positioned above the roasting machine frame, and the drum is covered by a detachable heat-insulating frame. One end of the roller is provided with a material inlet and outlet, and the other end is connected to a motor via a rotating shaft; The inside of the drum is welded with multiple evenly distributed spiral blades; The inlet and outlet are equipped with a detachable feed hopper. After feeding is completed using the feed hopper, the inlet and outlet are covered with a cover plate during frying. The cover plate includes a cover plate body, and the center of the cover plate body is provided with a through hole, the diameter of which is no more than 3 cm; Heating system: An electric heating device is provided on the top surface of the frying machine frame 1, and the electric heating device is located directly below the drum; The electric heating device includes several electric heating tubes arranged in an arc shape, corresponding to the arc shape of one-sixth of the outer wall of the drum; Screening system: The screening frame has a downward-sloping stone collection port on its front side away from the roasting machine frame; The left and right side walls of the screening frame are respectively provided with two symmetrically arranged baffles, which are inclined downwards, and a separable screen plate is provided above the baffles; Control system: The motor and the electric heating device are respectively connected to the control box; the control box is equipped with a PLC module to control the forward and reverse rotation of the motor and the temperature regulation of the electric heating device.

[0006] Furthermore, the inner walls of the insulation frame are all covered with an insulation layer.

[0007] Furthermore, the top surface of the roasting frame near the screening frame is provided with two support rollers, which are used to support the inlet and outlet ends of the drum, so that the drum can rotate on the support rollers.

[0008] Furthermore, the feed hopper includes a funnel-shaped hopper and a feed bend. The outer wall of the funnel-shaped hopper is detachably connected to the outer wall of the insulation frame via a connector, and the bottom end of the bend extends into the inlet and outlet.

[0009] Furthermore, the edge of the cover plate body is provided with a 2 cm edge strip to wrap around the outer wall of the inlet and outlet.

[0010] Furthermore, the cover plate body is also provided with two handles, which are symmetrically arranged on both sides of the through hole to facilitate the removal and placement of the cover plate.

[0011] Furthermore, the sieve plate is provided with a wire mesh, and a vertically connected support plate is provided in the middle of the sieve plate.

[0012] Furthermore, the top of the support plate is provided with a bent edge, which makes it easy to remove the sieve plate after screening is completed, and the sieve plate can be vertically hung on the side wall of the screening frame through the support plate for easy storage.

[0013] Furthermore, the electric heating element is modularly designed, so a single failure does not affect other units.

[0014] Furthermore, the bottom of the frying frame and the screening frame are each equipped with two front and two rear movable rollers to enable the overall movement and positioning of the equipment.

[0015] Compared with the prior art, the beneficial effects of this utility model are: This utility model provides a high-efficiency chestnut roasting machine. Through an internal spiral structure in the drum, an arc-shaped arrangement of electric heating tubes, a cover design that controls moisture loss, and a convenient sieving mechanism, it achieves efficient and uniform roasting of chestnuts. It has the following advantages: (1) The efficiency of stir-frying is significantly improved: It can produce 10-25 catties of chestnuts in 28 minutes, which is more than 40% more efficient than the traditional equipment that takes 35-50 minutes. The double-headed spiral structure ensures that chestnuts are heated evenly, shortening the roasting time.

[0016] (2) Excellent product quality: The curved heating element, combined with the rotating drum, achieves even heating from all directions, resulting in plump chestnuts. The perforated design of the lid controls moisture loss and keeps the chestnuts moist and delicious. Temperature is precisely controlled between 185-190°C, with a high-low temperature difference of ≤40°C, to avoid over-burning or under-cooking.

[0017] (3) Convenient and safe operation: One-click operation for forward frying and reverse discharge reduces the intensity of manual labor; The detachable sieve plate design facilitates the quick separation of chestnuts and pebbles; The caster wheels design allows the equipment to move flexibly and adapt to different work sites.

[0018] (4) Reduced energy consumption: The insulated frame reduces heat loss, lowering energy consumption by more than 25%. Precise temperature control systems prevent energy waste.

[0019] (5) Easy to clean and maintain: The non-stick coating reduces sugar adhesion, significantly shortening cleaning time; The modular design makes disassembly and maintenance of each component easy. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention during the stir-frying process.

[0021] Figure 2 This is a schematic diagram of the feeding structure of this utility model.

[0022] Figure 3 This is a side view of the present invention regarding the removal of the insulation frame.

[0023] Figure 4 This is a front view of the roller of this utility model.

[0024] in: 1. Roasting machine frame; 2. Screening frame; 2.1. Stone recovery port; 3. Drum; 3.1. Spiral blades; 3.2. Inlet and outlet ports; 4. Feed hopper; 5. Idler roller; 6. Cover plate; 6.1. Cover plate body; 6.2. Through hole; 6.3. Handle; 7. Screen plate; 7.1. Wire mesh; 7.2. Support plate; 8. Electric heating tube; 9. Insulation frame; 10. Rotating shaft; 11. Motor; 12. Control box; 13. Moving rollers. Detailed Implementation

[0025] To better understand the technical solution of this utility model, a detailed description will be provided below in conjunction with relevant illustrations. It should be understood that the specific embodiments described below are not intended to limit the specific implementation of the technical solution of this utility model, but are merely possible implementations of the technical solution of this utility model. It should be noted that the descriptions of the positional relationships of the components herein, such as component A being located above component B, are based on the relative positions of the components in the illustrations and are not intended to limit the actual positional relationships of the components. Example 1

[0026] See Figures 1-4 , Figure 1A structural schematic diagram of a high-efficiency chestnut roasting machine according to Embodiment 1 is shown. As shown in the figure, a high-efficiency chestnut roasting machine includes a drum system, a heating system, a sieving system, and a control system. The drum system includes a drum 3, a cover plate 6, a heat insulation frame 9, a rotating shaft 10, and a motor 11. The heating system includes a roasting frame 1 and an electric heating device. The sieving system includes a sieving frame 2 and a sieve plate 7. The control system includes a control box 12. The sieving frame 2 is installed on one side of the roasting frame 1, and the control box 12 is installed on the other side.

[0027] Roller system: The roller 3 is positioned above the frying machine frame 1, and the outer cover of the roller 3 is provided with a detachable heat-insulating frame 9; the inner wall of the heat-insulating frame 9 is covered with a heat-insulating layer. One end of the roller 3 is provided with a material inlet / outlet 3.2, and the other end is connected to a motor 11 via a rotating shaft 10; Two rollers 5 are provided on the top surface of the roasting frame 1 near the screening frame 2. The rollers 5 are used to support the inlet and outlet ends 3.2 of the drum 3, so that the drum 3 can rotate on the rollers 5. The inside of the roller 3 is welded with multiple evenly distributed spiral blades 3.1, and the spiral blades 3.1 have a double-headed spiral structure; When the motor rotates forward, chestnuts and pebbles rise with the spiral to the top of the drum and then fall down, achieving even stirring. When the motor reverses, the material falls into the screening frame 2 through the inlet / outlet 3.2 under the action of the screw.

[0028] A detachable feed hopper 4 is provided at the inlet / outlet 3.2. The feed hopper 4 includes a funnel-shaped hopper and a feed bend. The outer wall of the funnel-shaped hopper is detachably connected to the outer wall of the insulation frame 9 through a connector. The bottom end of the bend extends into the inlet / outlet 3.2. After feeding is completed using the feed hopper 4, the inlet / outlet 3.2 is covered with a cover plate 6 during frying. The cover plate 6 includes a cover plate body 6.1. The edge of the cover plate body 6.1 is provided with a 2 cm edge strip to wrap around the outer wall of the inlet / outlet port 3.2. The center of the cover plate body 6.1 is provided with a through hole 6.2 with a diameter of 1-2 cm, which greatly reduces the moisture loss of chestnuts during roasting. The cover plate body 6.1 is also provided with two handles 6.3, which are symmetrically arranged on both sides of the through hole 6.2 for easy handling of the cover plate 6.

[0029] Heating system: An electric heating device is provided on the top surface of the frying machine frame 1, and the electric heating device is located directly below the drum 3; The electric heating device includes several electric heating tubes 8, which are arranged in an arc shape, corresponding to the one-sixth arc shape of the outer wall of the drum 3, to ensure uniform heating.

[0030] Screening system: The screening frame 2 has a downward-sloping stone collection port 2.1 on its front side away from the roasting machine frame 1, which facilitates the collection and recycling of stones. The left and right side walls of the screening frame 2 are respectively provided with two symmetrically arranged baffles. The baffles are inclined downward with an inclination angle of 20-80°. A separable screen plate 7 is provided above the baffles. The sieve plate 7 is provided with a wire mesh 7.1, and a vertically connected support plate 7.2 is provided in the middle of the sieve plate 7. The top of the support plate 7.2 is provided with a bent edge, so that the sieve plate 7 can be easily removed after screening. The sieve plate 7 can be vertically hung on the side wall of the screening frame 2 through the support plate 7.2 for easy storage.

[0031] Control system: The motor 11 and the electric heating device are respectively connected to the control box 12; The control box 12 is equipped with a PLC module, which can control the forward and reverse rotation of the motor 11 and the temperature adjustment of the electric heating device.

[0032] In this embodiment, the electric heating tube 8 is modularly designed, so a single failure does not affect other units.

[0033] In this embodiment, the bottom of the frying frame 1 and the screening frame 2 are respectively provided with two front and two rear moving rollers 13 to realize the overall movement and positioning of the equipment; the moving rollers 13 used as front wheels are universal brake wheels, and the moving rollers 13 used as rear wheels are fixed directional wheels, which can be equipped with a four-point leveling mechanism to adapt to uneven ground. Example 2

[0034] The high-efficiency chestnut roasting machine in this embodiment 2 differs from that in embodiment 1 in that: Thermocouple temperature sensors are embedded in the inner wall of the roller 3 to monitor the internal temperature of the roller 3 in real time, and achieve precise temperature control of ±2°C in conjunction with the PLC module of the control box 12.

[0035] The inner wall of the roller 3 and the surface of the spiral blades 3.1 are coated with a food-grade polytetrafluoroethylene non-stick coating to reduce the adhesion of chestnut sugar and facilitate cleaning. Example 3

[0036] The high-efficiency chestnut roasting machine in this embodiment 3 differs from that in embodiment 1 in that: The insulation frame 9 adopts a double-layer structure, with ceramic fiber insulation cotton filling the interlayer, and the thickness is 50mm. Example 4

[0037] The high-efficiency chestnut roasting machine in Example 4 differs from that in Example 1 in that: The through hole 6.2 of the cover plate 6 is set as an adjustable vent hole with an adjustable diameter of 10-20mm, and is equipped with a rotary regulating valve.

[0038] A humidity sensor is installed on the inner wall of the cover plate 6 to monitor the internal steam pressure in real time. Example 5

[0039] The high-efficiency chestnut roasting machine in this embodiment 5 differs from that in embodiment 1 in that: The height of the spiral blade 3.1 gradually changes from 50mm to 80mm, and the pitch gradually changes from 200mm to 150mm; The spiral blade 3.1 has an angle of 65° with the axis of the drum 3, which optimizes the material lifting effect; The spiral blade 3.1 has a flexible wear-resistant strip on its edge to reduce mechanical damage to the chestnut. Example 6

[0040] The high-efficiency chestnut roasting machine in Example 6 differs from that in Example 1 in that: A stainless steel reflector is provided below the electric heating device to improve thermal radiation efficiency. The distance between the stainless steel reflector and the electric heating tube 8 is adjustable, ranging from 10 to 30 mm. Example 7

[0041] The high-efficiency chestnut roasting machine in Example 7 differs from that in Example 1 in that: The screening frame 2 is equipped with a 45° inclined guide plate to guide the material to be evenly distributed. The wire mesh 7.1 of the sieve plate 7 is made of Φ3mm stainless steel wire with a spacing of 8mm; The four corners of the sieve plate 7 are provided with elastic support seats, and the bottom surface of the sieve plate 7 is provided with a vibration motor to realize vibration screening. Example 8

[0042] The high-efficiency chestnut roasting machine in this embodiment 8 differs from that in embodiment 1 in that: The PLC module of the control box 12 is equipped with a safety protection mechanism: Overheat protection: Automatically cuts off heating when the temperature exceeds 200°C; Motor overload protection: Automatic shutdown when current exceeds the set value; Cover plate interlock protection: The machine cannot start if the cover plate is not closed.

[0043] Working principle: The present invention relates to a high-efficiency chestnut roasting machine, the implementation of which is as follows: The drum is mounted on the heating frame via a rotating shaft, and the motor drives the drum to rotate through a transmission mechanism. The arc-shaped heating tubes of the electric heating device are tightly fitted to the lower part of the outer wall of the drum, providing a uniform heat source. The control box is set to a roasting temperature of 185°C. After starting, the motor rotates forward, and the double-headed spiral inside the drum continuously tumbles and roasts the chestnuts and pebbles.

[0044] After roasting, the motor is reversed, and the material is discharged from the inlet and outlet to the screening frame under the action of the screw. The screen plate separates chestnuts and pebbles through the wire mesh. The separated chestnuts are packaged, while the pebbles can be reused. After use, the screen plate can be stored by hanging it on the side wall of the screening frame using the support plate.

[0045] The above are merely specific application examples of this utility model and do not constitute any limitation on the scope of protection of this utility model. All technical solutions formed by equivalent transformations or equivalent substitutions fall within the scope of protection of this utility model.

Claims

1. A high-efficiency chestnut roasting machine, characterized in that: It includes a drum system, a heating system, a screening system and a control system; the drum system includes a drum (3), a cover plate (6), a heat insulation frame (9), a rotating shaft (10) and a motor (11); the heating system includes a roasting frame (1) and an electric heating device; the screening system includes a screening frame (2) and a sieve plate (7); the control system includes a control box (12); the screening frame (2) is set on one side of the roasting frame (1) and the control box (12) is set on the other side. Roller system: The roller (3) is positioned above the frying machine frame (1), and the outer cover of the roller (3) is provided with a detachable heat-insulating frame (9). One end of the roller (3) is provided with a feed inlet (3.2), and the other end is connected to a motor (11) through a rotating shaft (10). The inside of the roller (3) is welded with multiple evenly distributed spiral blades (3.1). The inlet / outlet (3.2) is equipped with a detachable feed hopper (4). After feeding is completed using the feed hopper (4), the inlet / outlet (3.2) is covered with a cover plate (6) during frying. The cover plate (6) includes a cover plate body (6.1), and a through hole (6.2) is provided in the center of the cover plate body (6.1), the diameter of the through hole (6.2) being no more than 3 cm; Heating system: The top surface of the frying machine frame (1) is equipped with an electric heating device, which is located directly below the drum (3); The electric heating device includes several electric heating tubes (8), which are arranged in an arc shape, corresponding to the arc shape of one-sixth of the outer wall of the drum (3); Screening system: The screening frame (2) has a downward-sloping stone collection port (2.1) on its front side away from the roasting frame (1). The screening frame (2) is provided with two symmetrically arranged baffles on its left and right side walls, the baffles are arranged inclined downwards, and a separable screen plate (7) is provided above the baffles. Control system: The motor (11) and the electric heating device are respectively connected to the control box (12); the control box (12) is equipped with a PLC module to control the forward and reverse rotation of the motor (11) and the temperature adjustment of the electric heating device.

2. The high-efficiency chestnut roasting machine according to claim 1, characterized in that: The inner walls of the insulation frame (9) are all covered with an insulation layer.

3. The high-efficiency chestnut roasting machine according to claim 1, characterized in that: The frying frame (1) has two rollers (5) on the top surface of one end near the screening frame (2). The rollers (5) are used to support the inlet and outlet (3.2) end of the drum (3), so that the drum (3) can rotate on the rollers (5).

4. The high-efficiency chestnut roasting machine according to claim 1, characterized in that: The feed hopper (4) includes a horn-shaped hopper and a feed bend. The outer wall of the horn-shaped hopper is detachably connected to the outer wall of the insulation frame (9) through a connector. The bottom end of the bend extends into the inlet / outlet (3.2).

5. The high-efficiency chestnut roasting machine according to claim 1, characterized in that: The edge of the cover plate body (6.1) is provided with a 2 cm edge strip to wrap around the outer wall of the inlet / outlet (3.2).

6. The high-efficiency chestnut roasting machine according to claim 1, characterized in that: The cover plate body (6.1) is also provided with two handles (6.3), which are symmetrically arranged on both sides of the through hole (6.2) to facilitate the taking and putting away of the cover plate (6).

7. The high-efficiency chestnut roasting machine according to claim 1, characterized in that: The sieve plate (7) is provided with a wire mesh (7.1), and a vertically connected support plate (7.2) is provided in the middle of the sieve plate (7).

8. The high-efficiency chestnut roasting machine according to claim 7, characterized in that: The top of the support plate (7.2) is provided with a bent edge, which makes it easy to remove the sieve plate (7) after screening is completed. The sieve plate (7) can be vertically hung on the side wall of the screening frame (2) through the support plate (7.2) for easy storage.

9. The high-efficiency chestnut roasting machine according to claim 1, characterized in that: The electric heating tube (8) is modularly designed so that a single failure does not affect other units.

10. The high-efficiency chestnut roasting machine according to claim 1, characterized in that: The bottom of the frying frame (1) and the screening frame (2) are respectively provided with two front and two rear moving rollers (13) to realize the overall movement and positioning of the equipment.

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