A double roller roasting device

Abstract

This utility model discloses a double-drum roasting device, relating to the field of food processing machinery. The device includes a support frame with an upper crossbeam bolted to a first drum and a second drum. A double auxiliary material feed hopper is located above the joint. The bottom of each feed hopper is connected to a feed pipe with a built-in coaxial auger. A stirring rod is fixed to the top of the auger. An auxiliary material slide plate is installed at the bottom of the feed pipe, extending into the inner cavity of the first drum. The feed hopper is fixed to the top of the support frame via the support frame. An auxiliary material motor is bolted to the side of the support frame. The motor's output shaft is coaxially driven with the auger. This utility model ensures constant conveying by using the auger inside the auxiliary material feed pipe to break up clumps of auxiliary material. The inclined design of the auxiliary material slide plate ensures that the material is evenly distributed on the surface of the first drum, forming a heat exchange layer. Simultaneously, the auxiliary material motor is isolated and installed on the side of the support frame, using a metal support frame to block high-temperature radiation. The stirring rod at the top of the auger stirs the cold material layer in the feed hopper, absorbing heat and forming a self-cooling protection. This double protection extends the lifespan of the equipment under high-temperature conditions.

Description

Technical Field

[0001] This utility model relates to the field of food processing machinery, specifically a double-drum roasting device. Background Technology

[0002] A drum roasting device is an industrial equipment that uses rotating and tumbling of materials, combined with a precisely controlled heat source, to achieve uniform heating, dehydration, cooking, and the formation of specific flavors and textures. It is a key tool in the modern food industry for the batch, standardized, and flavorful processing of various agricultural raw materials.

[0003] Most existing drum roasting devices are single-drum structures. In practical applications, operators need to manually add auxiliary materials that match the main ingredients into the drum. Operators cannot guarantee that the auxiliary materials match the main ingredients in the correct amount, nor can they add the auxiliary materials at the correct time. Therefore, the inventors urgently need to design a double-drum roasting device that allows the auxiliary materials to be added on time and in the correct amount. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a double-drum roasting device to solve the technical problem that auxiliary materials cannot be added in a timely and quantitative manner.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a double-drum roasting device, comprising a drum support, wherein the upper right crossbeam of the drum support is bolted to a first drum, and the upper left crossbeam is bolted to a second drum. Two parallel auxiliary material feeding hoppers are arranged at the upper part of the connection between the first and second drums. The bottom outlet of each auxiliary material feeding hopper is connected to an auxiliary material feeding pipe. An auger is coaxially arranged inside the auxiliary material feeding pipe. An auxiliary material stirring rod is arranged on the upper side of the auger and fixed within the inner cavity of the auxiliary material feeding hopper. An auxiliary material sliding plate is obliquely installed at the bottom outlet of the auxiliary material feeding pipe. The discharge end of the auxiliary material sliding plate extends to the upper part of the inner cavity of the first drum. The auxiliary material feeding hopper is bolted to the top crossbeam of the drum support. An auxiliary material motor is bolted to the side of the auxiliary material feeding hopper support, and the output shaft of the auxiliary material motor is coaxially linked with the auger.

[0006] By adopting the above technical solution, the coaxial auger and auxiliary material mixing rod combination structure forms a dual function of forced conveying and premixing in the auxiliary material feeding pipe, effectively solving the problem of pipe blockage caused by moisture agglomeration of powdered auxiliary materials, and ensuring the continuous and stable input of high-flowability materials.

[0007] Furthermore, two pairs of rotating wheels are respectively installed below the end discs of the first and second rollers, and the rotating wheels are bolted to the crossbeam of the roller support.

[0008] By adopting the above technical solution, the symmetrically arranged wheels below the discs at both ends of the drum form a four-point support structure through the rigid connection of the wheel brackets, so that the weight of the drum is evenly distributed to the support beam, effectively suppressing the shaft deformation and vibration caused by the eccentric load when the drum rotates at high speed.

[0009] Furthermore, the outer circumferential surfaces of the first and second rollers are locked together by a hoop, and the outer surface of the hoop is provided with a continuous grooved wheel track, and the wheel rim is embedded in the groove of the wheel track.

[0010] By adopting the above technical solution, the design of the hoops locking the middle of the outer circumference of the drum enhances the anti-creep ability of the drum shell at high temperature through circumferential constraint, and prevents the sealing failure caused by the drum becoming out of round due to thermal deformation.

[0011] Furthermore, a combustion chamber support is fixed to one side of the roller support by bolts, and a combustion chamber is fixed inside the combustion chamber support by bolts. A gas pipe is provided on the top of the combustion chamber, and the gas pipe is divided into two branch pipes, which are respectively connected to the heating jacket air inlet of the first roller and the second roller.

[0012] By adopting the above technical solution, the independently set combustion box support is modularly connected to the roller support by bolts, which decouples the high-temperature heat source system from the vibration of the main frame and prevents the high-frequency vibration of the burner from being transmitted to the precision feeding mechanism.

[0013] Furthermore, the central crossbeam of the roller support is fixed with a rotary motor by bolts. The output end of the rotary motor is provided with a drive gear, and a gear is coaxially provided on the rotary wheel, which meshes with the drive gear.

[0014] By adopting the above technical solution, the installation method of fixing the rotary motor to the central crossbeam of the support makes the power output point located in the center of gravity area of ​​the equipment, effectively balancing the torque reaction force when the double drums are running and reducing the overall vibration and noise of the equipment.

[0015] Furthermore, a main material feed hopper is provided on one side of the second roller, and the main material feed hopper is vertically fixed to the main material feed hopper support by bolts.

[0016] By adopting the above technical solution, the main material feed hopper is vertically fixed to the side of the drum through the main material feed hopper support, so that the height of the feed inlet matches the drum filling rate change curve, ensuring that the material is evenly spread on the drum cross section by gravity flow.

[0017] Furthermore, the discharge end of the main material feed hopper is fitted with a telescopic baffle, and the discharge end of the main material feed hopper extends into the inner cavity of the second roller.

[0018] By adopting the above technical solution, the chute-mounted telescopic baffle can achieve millimeter-level precise adjustment of the discharge port diameter under the operation of the handle, meeting the flow step control requirements of batch feeding in the roasting process.

[0019] Furthermore, an inclined main material slide plate is bolted to the outer wall of the discharge end of the second roller, and the discharge end of the main material slide plate extends into the inner cavity of the first roller.

[0020] By adopting the above technical solution, the design of the main material slide plate extending inclinedly into the inner cavity of the first drum allows the material pre-treated by the second drum to fall into the high-temperature main frying zone at a controllable speed after being buffered and decelerated by the slide plate, thus preventing material structural damage caused by high-speed impact on the drum wall.

[0021] Furthermore, a test instrument box is bolted to the outer side of the top crossbeam of the roller support, and an electrical control box is bolted to the outer vertical beam of the roller support.

[0022] By adopting the above technical solution, the detection box is positioned at the center point of the front side of the top crossbeam, which realizes the operator's visual monitoring needs for the double roller working area and facilitates the real-time acquisition of temperature and pressure parameters.

[0023] In summary, the present invention has the following main advantages:

[0024] 1. This utility model, through a dual-drum collaborative operation system and the coordination of the auxiliary material forced conveying mechanism and the main and auxiliary zone temperature control structure, completely solves the material scorching problem caused by temperature zone mixing in traditional single-drum systems. Specifically, the coaxially rotating auger inside the auxiliary material feed pipe continuously breaks up agglomerated auxiliary materials, allowing powdered materials to be input into the first drum at a constant flow rate. Simultaneously, the specific inclination angle design of the auxiliary material slide plate ensures that the material is evenly distributed on the surface of the high-temperature drum, forming a covering heat exchange layer, significantly improving the composite penetration efficiency of the main and auxiliary materials. Furthermore, the direct-drive mechanism between the auxiliary material motor and the auger forms a heat source isolation barrier in terms of spatial layout. The motor is installed on the outer facade of the auxiliary material feed hopper support, utilizing the thermal resistance effect of the metal support to block high-temperature radiation. The stirring rod at the top of the auger continuously stirs the material within the auxiliary material feed hopper, eliminating material bridging and absorbing heat through the cold material layer, forming a self-cooling protection mechanism. This dual-protection structure effectively extends the service life of the motor equipment under high-temperature conditions.

[0025] 2. This utility model achieves overall rigid vibration suppression through a modular, split installation system that combines mechanical constraints with dynamic decoupling. Specifically, the four-point support structure of the rotor and the grooved track of the hoop form a three-dimensional limit, effectively controlling the radial runout of the drum. The combustion chamber is independently installed on a dedicated bracket, and combustion vibration transmission is isolated by a flexible air pipe. Direct gear meshing eliminates belt slippage error. Simultaneously, the directional flow channel integrated system optimizes the material energy transfer path. The main material slide plate extends obliquely above the central axis of the first drum's inner cavity, allowing the pre-dried material to complete directional transfer during the gravitational potential energy conversion process. The auxiliary material slide plate outlet maintains a horizontal distance and vertical drop with the main material slide plate, forming a sequential composite space for the main and auxiliary materials. Branch heating of the air pipe enables the two drums to obtain independent temperature control capabilities. All three work together to shorten the material transfer heat loss time. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0027] Figure 2 This is a front view structural diagram of the present utility model;

[0028] Figure 3 This is a top view of the structure of this utility model;

[0029] Figure 4 This is a bottom view of the structure of this utility model.

[0030] In the diagram: 1. Roller support; 2. First roller; 3. Second roller; 4. Auxiliary material feed hopper; 5. Auxiliary material motor; 6. Auxiliary material feed hopper support; 7. Rotary wheel; 8. Combustion box; 9. Gas pipe; 10. Hoop; 11. Main material feed hopper support; 12. Main material feed hopper; 13. Telescopic baffle; 14. Rotary wheel track; 15. Auxiliary material slide plate; 16. Main material slide plate; 17. Screwdriver; 18. Auxiliary material stirring rod; 19. Auxiliary material feed pipe; 20. Rotary wheel motor; 21. Gear; 22. Test panel box; 23. Electrical control box; 24. Rotary wheel support; 25. Combustion box support. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0032] In this embodiment:

[0033] A double-drum roasting device, such as Figure 1-4As shown, the system includes a roller support 1. The upper right crossbeam of the roller support 1 is bolted to a first roller 2, and the upper left crossbeam is bolted to a second roller 3. Two parallel auxiliary material feed hoppers 4 are located at the connection between the first roller 2 and the second roller 3. The bottom outlet of the auxiliary material feed hoppers 4 is connected to an auxiliary material feed pipe 19. An auger 17 is coaxially mounted inside the auxiliary material feed pipe 19. An auxiliary material stirring rod 18 is mounted on the upper side of the auger 17 and fixed to the inner cavity of the auxiliary material feed hoppers 4. An auxiliary material slide plate 15 is installed at an angle at the bottom outlet of the auxiliary material feed pipe 19. The discharge end of the auxiliary material slide plate 15 extends to the upper part of the inner cavity of the first roller 2. The auxiliary material feed hoppers 4 are bolted to the top crossbeam of the roller support 1 via an auxiliary material feed hopper bracket 6. The side surfaces of the auxiliary material feed hopper bracket 6 are bolted to... The auxiliary material motor 5 is fixedly connected, and the output shaft of the auxiliary material motor 5 is coaxially linked with the auger 17. The coaxially linked auger 17 and the auxiliary material stirring rod 18 are combined to form a dual function of forced conveying and premixing in the auxiliary material feed pipe 19. This effectively solves the problem of pipe blockage caused by moisture agglomeration of powdered auxiliary materials, and ensures continuous and stable input of high-flowability materials. At the same time, the auxiliary material slide plate 15 is arranged to extend to the upper part of the inner cavity of the first roller 2 at a specific tilt angle, so that the auxiliary material is evenly spread on the surface of the main material in a parabolic trajectory, avoiding uneven local mixing caused by concentrated material drop, and significantly improving the composite penetration efficiency of the main and auxiliary materials in the initial section of the roller. In addition, the direct drive design of the auxiliary material motor 5 and the auger 17 not only eliminates the energy loss of the intermediate transmission chain, but also reduces the impact of high temperature on the motor through physical isolation.

[0034] See Figure 1 , Figure 2 , Figure 3 , Figure 4 Two pairs of rotating wheels 7 are respectively installed below the end discs of the first roller 2 and the second roller 3. The rotating wheels 7 are bolted to the crossbeam of the roller support 1 through rotating wheel brackets 24. The rotating wheels 7, symmetrically arranged below the end discs of the rollers, form a four-point support structure through the rigid connection of the rotating wheel brackets 24, so that the weight of the roller is evenly distributed to the crossbeam of the support, effectively suppressing the shaft deformation and vibration caused by eccentric load when the roller rotates at high speed. At the same time, this support method transforms traditional sliding friction into rolling friction, significantly reducing drive energy consumption, and the line contact between the discs and the rotating wheels offsets the dynamic eccentric load caused by uneven material distribution. This layout also reserves space for axial thermal expansion of the roller, avoiding stress concentration in the metal structure caused by temperature rise.

[0035] See Figure 1 , Figure 2 , Figure 3 , Figure 4The outer circumferential surfaces of the first roller 2 and the second roller 3 are locked together by a hoop 10. The outer surface of the hoop 10 is provided with a continuous grooved wheel track 14, and the rim of the wheel 7 is embedded in the groove of the wheel track 14. The design of the hoop 10 being locked in the middle of the outer circumferential surface of the roller enhances the anti-creep capability of the roller shell at high temperature through circumferential constraint, and prevents the sealing failure caused by the roller losing roundness due to thermal deformation. At the same time, the embedded engagement structure of the grooved wheel track 14 and the rim of the wheel 7 forms a mechanical kinematic pair in three-dimensional space, providing precise guiding constraints in the radial, axial and tangential degrees of freedom. This structure not only eliminates the radial runout phenomenon when the roller rotates, but also blocks the risk of axial movement of the roller caused by instantaneous impact through the contact limit between the groove sidewall and the rim.

[0036] See Figure 1 , Figure 2 , Figure 3 , Figure 4 A combustion chamber support 25 is bolted to one side of the drum support 1. A combustion chamber 8 is bolted inside the combustion chamber support 25. A gas pipe 9 is installed on the top of the combustion chamber 8. The gas pipe 9 is divided into two branch pipes, which are respectively connected to the heating jacket inlets of the first drum 2 and the second drum 3. The independently configured combustion chamber support 25 is modularly connected to the drum support 1 via bolts, decoupling the high-temperature heat source system from the main frame vibration and preventing high-frequency vibration of the burner from being transmitted to the precision feeding mechanism. Simultaneously, the branch gas pipes 9 connect to the dual-drum heating jacket layout, achieving precise heat distribution from a single heat source to both working zones. The branch pipe valves can be adjusted to flexibly adapt to the differentiated temperature zone requirements of the two drum sections. This gas supply method also shortens the transmission path of the high-temperature airflow, reduces heat loss from the pipe wall, and improves thermal energy utilization efficiency.

[0037] See Figure 1 , Figure 2 , Figure 3 , Figure 4 A rotary motor 20 is bolted to the central crossbeam of the roller support 1. The output end of the rotary motor 20 is equipped with a drive gear, and a gear 21 is coaxially mounted on the roller 7. Gear 21 meshes with the drive gear. The installation method of fixing the rotary motor 20 to the central crossbeam of the support ensures that the power output point is located in the center of gravity area of ​​the equipment, effectively balancing the torque reaction force during the operation of the two rollers and reducing the overall vibration and noise of the equipment. Simultaneously, the direct meshing transmission between the drive gear and the roller end gear 21 constructs a closed power transmission chain, improving torque transmission efficiency compared to traditional belt drives and eliminating speed fluctuations caused by belt slippage. This design also centralizes motor maintenance points, avoiding safety hazards for maintenance personnel entering the high-temperature roller operating area.

[0038] See Figure 1 , Figure 2 , Figure 3 , Figure 4 A main material feed hopper 12 is provided on one side of the second roller 3. The main material feed hopper 12 is vertically fixed to the main material feed hopper support 11 by bolts. The main material feed hopper 12 is vertically fixed to the side of the roller through the main material feed hopper support 11, so that the height of the feed inlet matches the roller filling rate change curve, ensuring that the material is evenly spread on the roller cross section by gravity flow. At the same time, this independent support system and the auxiliary material feeding mechanism form a spatially separated layout, blocking the risk of uncontrolled mixing of main and auxiliary materials in the initial stage of conveying. This split design also makes it easy to change the feed hopper volume for different material characteristics, enhancing the equipment's process adaptability.

[0039] See Figure 1 , Figure 2 , Figure 3 , Figure 4 The main material feed hopper 12 is equipped with a telescopic baffle 13 at its discharge end, which extends into the inner cavity of the second roller 3. The telescopic baffle 13 with a sliding groove can achieve millimeter-level precise adjustment of the discharge port diameter under the operation of the handle, meeting the flow step control requirements of batch feeding in the roasting process. At the same time, the integrated design of the telescopic baffle 13 and the main material slide plate 16 allows the material to immediately enter the inclined slide and accelerate after the baffle is adjusted, avoiding material breakage caused by free fall. This mechanism is especially suitable for the inert gas protection feeding mode of easily oxidized materials, shortening the exposure time of the material in the transition zone.

[0040] See Figure 1 , Figure 2 , Figure 3 , Figure 4 The outer wall of the discharge end of the second roller 3 is bolted with an inclined main material slide plate 16. The discharge end of the main material slide plate 16 extends into the inner cavity of the first roller 2. The design of the main material slide plate 16 extending inclined into the inner cavity of the first roller 2 allows the material pre-treated by the second roller to fall into the high-temperature main frying zone at a controllable speed after being buffered and decelerated by the slide plate, preventing material structure damage caused by high-speed impact on the roller wall. At the same time, the staggered layout of the main and auxiliary material slide plates in space creates a temporal composite condition for the main material base and the auxiliary material coating, forming a gradient distribution structure with the main material at the bottom and the auxiliary material at the top in the roller, promoting hot air penetration mixing.

[0041] See Figure 1 , Figure 2 , Figure 3 , Figure 4The top crossbeam of the roller support 1 is bolted to the outer side of the test box 22, and the outer vertical beam of the roller support 1 is bolted to the electrical control box 23. The test box 22 is positioned at the center point of the front side of the top crossbeam, which realizes the operator's visual monitoring needs of the double roller working area and facilitates the real-time acquisition of temperature and pressure parameters. At the same time, the electrical control box 23 is installed in the safe working area, which conforms to the ergonomic maintenance operation height. The rear heat dissipation channel formed by its mounting frame uses the equipment's own hot air flow to form passive air cooling. The separate layout of the two boxes also realizes the physical isolation of the strong and weak electrical systems, avoiding electromagnetic interference from affecting the signal acquisition accuracy.

[0042] The implementation principle of this embodiment is as follows: The main material is fed into the second drum 3 through the main material feed hopper 12 for preheating treatment. At this time, the high-temperature flue gas generated by the combustion box 8 is diverted through the gas pipe 9 and introduced into the heating jacket of the second drum to form a pre-frying temperature zone. The pre-dehydrated main material is transferred to the main frying zone of the first drum 2 through the main material slide plate 16. At the same time, the powdered auxiliary material enters the auxiliary material feed pipe 19 through the double auxiliary material feed hopper 4. The screw conveyor 17 rotates and crushes the auxiliary material and drives the auxiliary material stirring rod 18 to prevent material bridging. The crushed auxiliary material is evenly covered on the inner wall surface of the first drum through the auxiliary material slide plate 15 to form a heat exchange layer. During this process, the auxiliary material motor 5 blocks heat radiation through the side vertical installation position of the auxiliary material feed hopper support 6. The auxiliary material stirring rod 18 continuously absorbs and conducts heat in the cold material layer in the auxiliary material feed hopper 4, realizing motor operation protection. Finally, the finished product is output from the first drum, completing the continuous gradient temperature control roasting.

[0043] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A double-drum roasting device, characterized in that: The system includes a roller support (1), the upper right crossbeam of which is bolted to a first roller (2), and the upper left crossbeam of which is bolted to a second roller (3). Two parallel auxiliary material feed hoppers (4) are located at the connection between the first roller (2) and the second roller (3). The bottom outlet of each auxiliary material feed hopper (4) is connected to an auxiliary material feed pipe (19). An auger (17) is coaxially arranged inside the auxiliary material feed pipe (19), and an auxiliary material stirring rod is located on the upper side of the auger (17). (18) and fixed in the inner cavity of the auxiliary material feed hopper (4), the bottom outlet of the auxiliary material feed pipe (19) is inclinedly installed with an auxiliary material slide plate (15), the discharge end of the auxiliary material slide plate (15) extends to the upper part of the inner cavity of the first roller (2), the auxiliary material feed hopper (4) is fixed to the top beam of the roller support (1) by bolts through the auxiliary material feed hopper bracket (6), the side surface of the auxiliary material feed hopper bracket (6) is fixedly connected to the auxiliary material motor (5) by bolts, and the output shaft of the auxiliary material motor (5) is coaxially linked with the auger (17).

2. The double-drum roasting device according to claim 1, characterized in that: Two pairs of rotating wheels (7) are respectively installed below the wheel discs at both ends of the first roller (2) and the second roller (3). The rotating wheels (7) are bolted to the crossbeam of the roller support (1) through the rotating wheel bracket (24).

3. The double-drum roasting device according to claim 1, characterized in that: The outer circumferential surfaces of the first roller (2) and the second roller (3) are locked together by a hoop (10). The outer surface of the hoop (10) is provided with a continuous grooved wheel track (14), and the rim of the wheel (7) is embedded in the groove of the wheel track (14).

4. The double-drum roasting device according to claim 1, characterized in that: A combustion chamber support (25) is fixed to one side of the roller support (1) by bolts. A combustion chamber (8) is fixed inside the combustion chamber support (25) by bolts. A gas pipe (9) is provided on the top of the combustion chamber (8). The gas pipe (9) is divided into two branch pipes, which are respectively connected to the heating jacket air inlet of the first roller (2) and the second roller (3).

5. The double-drum roasting device according to claim 1, characterized in that: The central crossbeam of the roller support (1) is fixed with a rotary motor (20) by bolts. The output end of the rotary motor (20) is provided with a drive gear, and the rotary wheel (7) is coaxially provided with a gear (21), which meshes with the drive gear.

6. The double-drum roasting apparatus according to claim 1, characterized in that: A main material feed hopper (12) is provided on one side of the second roller (3), and the main material feed hopper (12) is vertically fixed to the main material feed hopper support (11) by bolts.

7. The double-drum roasting apparatus according to claim 6, characterized in that: The discharge end of the main material feed hopper (12) is fitted with a telescopic baffle (13), and the discharge end of the main material feed hopper (12) extends into the inner cavity of the second roller (3).

8. The double-drum roasting apparatus according to claim 1, characterized in that: An inclined main material slide plate (16) is bolted to the outer wall of the discharge end of the second roller (3), and the discharge end of the main material slide plate (16) extends into the inner cavity of the first roller (2).

9. The double-drum roasting apparatus according to claim 1, characterized in that: The top crossbeam of the roller support (1) is bolted to the outer side of the test instrument box (22), and the outer vertical beam of the roller support (1) is bolted to the electrical control box (23).

Images