Microwave and hot air synergistic heating and drying roller device

Abstract

The utility model relates to a microwave hot air synergistic heating drying roller device. The existing aggregate drying equipment of the asphalt mixing station has the problems of high energy consumption and generation of a large amount of pollution gas. The device comprises a roller, an outer cylinder, a magnetron and a hot air generator, a feeding hole is formed in one end of the roller, and the other end of the roller is connected with the hot air generator; the outer cylinder annularly sleeves the periphery of the middle part of the roller and is coaxial with the roller; the roller rotates around a central shaft in the outer cylinder; the magnetron is arranged at the top of the outer cylinder, and openings are formed in the positions, corresponding to the magnetron, of the outer cylinder and the roller. According to the device disclosed by the utility model, a microwave heating measure is designed for heating the aggregate, and compared with a burner for heating, the microwave heating is high in heating speed and uniform in heating, so that the power of the burner can be effectively reduced, and the energy loss and the environmental pollution are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of asphalt mixing, and particularly relates to a microwave hot air collaborative heating and drying drum device. Background Art

[0002] The aggregate drying of an asphalt mixing plant mainly adopts a drum device, which can dry cold and wet aggregates and heat the aggregates. The aggregates need to go through three stages in the drum: preheating, dehydration and drying, and heating up. It is required that the aggregates can be evenly distributed in the drum, the movement in each section is reasonable and there is enough movement time in the drum to ensure that the discharge temperature can reach the specified requirements, and the combustion space of the flame also needs to be considered.

[0003] Since the drum operates in a continuous mode, the power demand for the burner is very large. It is necessary to ensure that all the passing aggregates meet the requirements, and the flame cannot be too large, otherwise the temperature of the aggregates will be too high, which results in a large consumption of resources and extremely high energy consumption during the combustion process of the existing burner. In addition, the operation of the burner will also generate a large amount of air-polluting gases, and subsequent work such as dust removal is required.

[0004] Therefore, it is necessary to propose new measures to overcome the above defects. Summary of the Invention

[0005] The purpose of the utility model is to provide a microwave hot air collaborative heating and drying drum device to solve the problems of high energy consumption and a large amount of polluting gases generated by the existing aggregate drying equipment of asphalt mixing plants.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] A microwave hot air collaborative heating and drying drum device, the device includes a drum, an outer cylinder, a magnetron and a hot air generator;

[0008] The drum is horizontally arranged, one end of the drum is provided with a feeding port, and the other end is connected to the hot air generator;

[0009] The outer cylinder is sleeved around the middle outer periphery of the drum and is coaxially arranged with the drum, and the drum rotates around the central axis in the outer cylinder;

[0010] The magnetron is arranged on the top of the outer cylinder, and openings are provided at the positions of the outer cylinder and the drum corresponding to the magnetron.

[0011] Further, the drum is supported by a bracket arranged below it;

[0012] On the transverse two sides of the top of the bracket, supporting wheels are arranged. Correspondingly, on the outer circumferences of the transverse two sides of the roller, supporting annular tracks are arranged, and the curved surfaces of the supporting annular tracks are located on the wheel surfaces of the supporting wheels.

[0013] Furthermore, on the outer circumference of one transverse side of the roller, a gear annular track is arranged. Correspondingly, on one transverse side of the top of the bracket, a driving motor mounting seat is arranged and a driving motor is installed. A driving gear is arranged on the output shaft of the driving motor, and the driving gear meshes with the gear annular track.

[0014] Furthermore, an outer cylinder bracket is arranged at the position corresponding to the outer cylinder on the top of the bracket, and the bottom of the outer cylinder is supported on the outer cylinder bracket.

[0015] Furthermore, a discharge sleeve is arranged between the roller and the hot air generator.

[0016] Furthermore, a burner is arranged at the end of the hot air generator, and a blower is arranged.

[0017] Furthermore, multiple columns of magnetrons are arranged circumferentially at the top of the outer cylinder. Openings are arranged at the positions corresponding to each magnetron on the outer cylinder, and the area is smaller than the area of the magnetron.

[0018] Furthermore, the openings corresponding to the magnetron positions on the roller are arranged in a full circumferential ring, and the area is larger than the opening area of the outer cylinder.

[0019] Furthermore, an elastic ring is arranged between the outer cylinder and the roller. The elastic ring is sleeved on the outer circumference of the roller and is located between the axially adjacent magnetrons.

[0020] Furthermore, a gap deflector is arranged on one side of the opening of the roller.

[0021] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0022] The present utility model provides a microwave hot air collaborative heating and drying roller device, and microwave heating measures are designed in the device to heat the aggregate. Compared with burner heating, microwave heating has a fast heating speed and uniform heating, can effectively reduce the power of the burner, and reduce energy loss and environmental pollution. Description of the Drawings

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings of embodiments can also be obtained based on these drawings.

[0024] Figure 1 It is the front view of the overall structure of the present invention.

[0025] Figure 2 It is the top view of the overall structure of the present invention.

[0026] Figure 3 It is the axonometric drawing of the present invention.

[0027] Figure 4 It is the enlarged view of the position of the magnetron of the present invention.

[0028] Figure 5 It is the enlarged view of the position of the gap flap of the present invention.

[0029] Figure 6 It is the schematic diagram of the structure of the gap flap of the present invention.

[0030] The labels in the figure are:

[0031] 1 - Bracket, 2 - Burner, 3 - Discharge sleeve, 4 - Magnetron, 5 - Outer cylinder, 6 - Gear annular track, 7 - Support annular track, 8 - Feed inlet, 9 - Drum, 10 - Support wheel, 11 - Driving gear, 12 - Reducer, 13 - Driving motor, 14 - Outer cylinder bracket, 15 - Elastic ring, 16 - Material lifting blade, 17 - Gap flap, 18 - Hot air generator, 19 - Blower. Detailed implementation manners

[0032] To facilitate the understanding of the present invention, the following will describe the present invention more comprehensively with reference to the relevant drawings. The preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0033] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "middle part", "upper", "lower", "axial direction", "lateral direction", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0034] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, terms such as "installation", "connection", "setting", etc. should be understood in a broad sense. For example, it can be fixedly connected and set, or detachably connected and set, or integrally connected and set. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0035] In the specific implementation manner, the central axis direction of the drum 9 is defined as the axial direction, and the Figure 1 direction from left to right in it is defined as the lateral direction.

[0036] The present utility model provides a microwave and hot air collaborative heating and drying drum device. While a hot air generator 18 capable of providing hot air is provided in the device, a magnetron 4 capable of emitting microwaves is designed on its outer periphery. When drying the aggregate, the hot air and the microwaves act synergistically, making the heating speed of the aggregate faster and the heating more uniform.

[0037] Such as Figure 1 and Figure 2 , the device includes a drum 9, an outer cylinder 5, a magnetron 4, and a hot air generator 18.

[0038] The drum 9 is generally cylindrical in shape, horizontally arranged, and provided with lifting blades 16 inside. An inlet 8 is provided at one end of the drum 9. The aggregate enters the drum 9 from the inlet 8. When the drum 9 rotates, the aggregate can roll inside the drum 9 and be evenly mixed under the action of the lifting blades 16. The other end of the drum 9 is connected to the hot air generator 18, and hot air can be sent into the drum 9. A burner 2 is provided at the end of the hot air generator 18, and a blower 19 is provided. After the heat generated by the combustion of the burner 2 heats the air, it enters the hot air generator 18 and is blown into the drum 9 by the blower 19 to dry and heat the aggregate.

[0039] A discharge sleeve 3 is also provided between the drum 9 and the hot air generator 18 for discharging operations.

[0040] The drum 9 is supported by a bracket 1 provided below it. Support wheels 10 are provided on the lateral two sides at the top of the bracket 1. Correspondingly, support annular tracks 7 are provided on the outer peripheries of the lateral two sides of the drum 9, and the curved surface of the support annular track 7 is located on the wheel surface of the support wheel 10. A gear annular track 6 is provided on the outer periphery of one lateral side of the drum 9. Correspondingly, a drive motor mounting base is provided on the lateral one side at the top of the bracket 1 and a drive motor 13 is mounted. A drive gear is provided on the output shaft of the drive motor 13, and the drive gear meshes with the gear annular track 6. A speed reducer 12 is configured on the drive motor 13. After the drive motor 13 is started, the drive gear drives the gear annular track 6 to rotate, thereby causing the drum 9 to start rotating. During the rotation process, the support annular track 7 is supported on the support wheel 10.

[0041] The outer cylinder 5 is sleeved around the middle outer periphery of the drum 9 and is coaxially arranged with the drum 9. The drum 9 rotates around the central axis inside the outer cylinder 5. The outer cylinder 5 does not rotate. An outer cylinder bracket 14 is provided at the position corresponding to the outer cylinder 5 at the top of the bracket 1, and the bottom of the outer cylinder 5 is supported on the outer cylinder bracket 14.

[0042] The magnetron 4 is provided at the top of the outer cylinder 5. Openings are provided at the positions corresponding to the magnetron 4 on both the outer cylinder 5 and the drum 9, and they can be square holes. Specifically, as Figure 4 , the magnetron 4 is arranged in multiple columns circumferentially at the top of the outer cylinder 5, but not arranged in a full circle. An opening is provided at the position corresponding to each magnetron 4 on the outer cylinder 5, and the area is smaller than the area of the magnetron 4. The opening at the position corresponding to the magnetron 4 on the drum 9 is arranged in a full circle circumferentially, and the area is larger than the opening area of the outer cylinder 5. When the drum 9 rotates around the central axis inside the outer cylinder 5, the opening of the drum 9 can successively be opposite to and coincide with the opening of the outer cylinder 5, and the microwave of the magnetron 4 can continuously and evenly enter the drum 9 to act on the aggregate. Since the microwave of the magnetron 4 is also added to the drying of the aggregate, the power consumption of the burner 2 can be greatly reduced, and at the same time, the emission of combustion exhaust gas is also reduced.

[0043] In addition, in some embodiments, an elastic ring 15 is further provided between the outer cylinder 5 and the drum 9. The elastic ring 15 is sleeved around the outer periphery of the drum 9 and is located between the axially adjacent magnetrons 4. When the drum 9 rotates around the central axis inside the outer cylinder 5, the drum 9 and the outer cylinder 5 do not directly contact. The inner wall of the outer cylinder 5 only contacts the elastic ring 15, and the contact area is small, reducing the frictional force and making the rotation smoother. In addition, the elastic ring 15 can also cope with the deformation of the drum 9 after thermal expansion.

[0044] Due to the provision of the elastic ring 15, there is a gap between the drum 9 and the outer cylinder 5, and it is easy for the aggregate to enter the gap. Therefore, a clearance flap 17 is provided on one side of the opening of the drum 9. During rotation, it always sweeps the inner wall of the outer cylinder 5 to prevent the aggregate from entering the gap. The clearance flap 17 is an arc-shaped flap, installed on the outer wall of the drum 9, and the other end relies on the arc-shaped elastic force to closely adhere to the inner wall of the outer cylinder 5.

[0045] The opening positions of the drum 9 are arranged around the circumference of the drum 9. After the drum 9 rotates, it is necessary to ensure that each opening can coincide with the opening of the outer cylinder 5. However, the opening of the drum 9 should be larger than that of the outer cylinder 5 to ensure that the subsequent gap paddle 17 will not get stuck on the outer cylinder 5.

[0046] Based on the original burner for heating and drying the aggregate, the present utility model adds microwave heating of the aggregate. Compared with burner heating, microwave heating has a faster heating speed and is more uniform. After adopting microwave heating, to a certain extent, the power of the burner can be reduced, and the energy loss and environmental pollution can be decreased.

[0047] The above uses specific examples to elaborate on the present utility model, which is only used to help understand the present utility model and is not intended to limit the present utility model. For those skilled in the technical field to which the present utility model pertains, according to the idea of the present utility model, several simple deductions, deformations or substitutions can also be made.

Claims

1. A microwave and hot air co - heating drying drum device, characterized in that: The device includes a drum (9), an outer cylinder (5), a magnetron (4) and a hot air generator (18); The drum (9) is horizontally arranged, one end of the drum (9) is provided with a feeding port (8), and the other end is connected to the hot air generator (18); The outer cylinder (5) is sleeved around the middle outer circumference of the drum (9) and is coaxially arranged with the drum (9), and the drum (9) rotates around the central axis in the outer cylinder (5); The magnetron (4) is arranged on the top of the outer cylinder (5), and openings are provided at the positions of the outer cylinder (5) and the drum (9) corresponding to the magnetron (4).

2. The microwave and hot air co - heating drying drum device according to claim 1, characterized in that: The drum (9) is supported by a bracket (1) arranged below it; Support wheels (10) are arranged on the top of the transverse two sides of the bracket (1). Correspondingly, support annular tracks (7) are arranged on the outer circumferences of the transverse two sides of the drum (9), and the curved surface of the support annular track (7) is located on the wheel surface of the support wheel (10).

3. The microwave and hot air co - heating drying drum device according to claim 2, characterized in that: A gear annular track (6) is arranged on the outer circumference of one transverse side of the drum (9). Correspondingly, a driving motor mounting seat is arranged on the top of one transverse side of the bracket (1) and a driving motor (13) is installed. A driving gear is arranged on the output shaft of the driving motor (13), and the driving gear meshes with the gear annular track (6).

4. The microwave and hot air co - heating drying drum device according to claim 3, characterized in that: An outer cylinder bracket (14) is arranged on the top of the bracket (1) corresponding to the position of the outer cylinder (5), and the bottom of the outer cylinder (5) is supported on the outer cylinder bracket (14).

5. The microwave and hot air co - heating drying drum device according to claim 4, characterized in that: A discharge sleeve (3) is further arranged between the drum (9) and the hot air generator (18).

6. The microwave and hot air co - heating drying drum device according to claim 5, characterized in that: A burner (2) is arranged at the end of the hot air generator (18), and a blower (19) is provided.

7. The microwave and hot air co - heating drying drum device according to claim 6, characterized in that: The magnetrons (4) are arranged in multiple columns in the circumferential direction on the top of the outer cylinder (5). Openings are provided at the positions of the outer cylinder (5) corresponding to each magnetron (4), and the area is smaller than the area of the magnetron (4).

8. The microwave and hot air co - heating drying drum device according to claim 7, characterized in that: The openings at the positions of the drum (9) corresponding to the magnetrons (4) are arranged in a full - ring circumferentially, and the area is larger than the opening area of the outer cylinder (5).

9. The microwave and hot air co - heating drying drum device according to claim 8, characterized in that: An elastic ring (15) is arranged between the outer cylinder (5) and the drum (9), and the elastic ring (15) is sleeved on the outer circumference of the drum (9) and is located between the magnetrons (4) adjacent in the axial direction.

10. The microwave hot air collaborative heating and drying drum device according to claim 9, characterized in that: A gap dial (17) is arranged on the side of the drum (9) with openings.

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