Wet material drying equipment
Through the wet material drying equipment without hot air furnace, the furnace heats directly heat the outer cylinder and the inner cylinder, combined with exhaust gas recycling and spiral blade design, the insufficient heat utilization and environmental pollution of the wet material drying equipment are solved, and efficient and low-cost drying effect is achieved.
Patent Information
- Application Number
- CN202422295245.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-20
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-09-20
AI Technical Summary
Existing wet drying equipment needs to be connected to a hot air furnace, resulting in insufficient heat utilization, low drying efficiency, complex equipment, high operating costs and serious environmental pollution.
Wet drying equipment without hot air furnace is adopted, and the outer and inner cylinders are directly heated by the furnace heat energy, and the ignition pipe and exhaust gas are recycled, combined with spiral blades and heat sinks, to improve the thermal energy utilization and drying efficiency.
The system design is simplified, operating costs are reduced, thermal energy utilization efficiency is improved, environmental pollution is reduced, and drying uniformity and efficiency are enhanced.
Smart Images
Figure CN223121878U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of drying equipment, and specifically relates to a wet material drying equipment. Background Technique
[0002] In the drying process of wet materials in sand production, traditional systems usually adopt a combination of a hopper and a drum dryer. In such a system, the wet materials are first placed in the hopper and then conveyed to the drum dryer through a screw conveyor at the bottom of the hopper. One end of the drum of the dryer is connected to a hot blast stove, and the hot air generated by the hot blast stove directly enters the interior of the dryer and contacts the rolling sand for drying. The dried sand is discharged from the discharge port of the dryer. Although this system realizes the drying of wet materials to a certain extent, there are some problems in terms of heat energy utilization and drying efficiency. These include:
[0003] 1. Insufficient heat energy utilization: The hot air generated by the hot blast stove directly enters the dryer, and the heat energy utilization rate of this method is not high, resulting in energy waste.
[0004] 2. Low drying efficiency: Since the heat energy of the hot blast stove cannot be fully transferred to the wet materials, the drying efficiency of the sand is limited.
[0005] 3. Complex equipment: An additional hot blast stove and complex connection equipment are required, increasing the complexity of the system and the difficulty of maintenance.
[0006] 4. Environmental pollution: The tail gas generated during the drying process is directly discharged without treatment, which may cause pollution to the environment.
[0007] 5. High operating cost: Due to insufficient heat energy utilization, more energy consumption is required during the drying process, increasing the production cost. Content of the Utility Model
[0008] In view of the above problems, the utility model provides a wet material drying equipment, which is used to solve the problems that the existing wet material dryer needs to be connected to a hot blast stove, has low drying efficiency, and high operating cost.
[0009] To achieve the above object, the technical solution adopted by the utility model is:
[0010] A wet material drying equipment, including a machine base, on which a rotatable outer cylinder is provided; an inner cylinder is coaxially arranged inside the outer cylinder, and the sandwich cavity between the outer cylinder and the inner cylinder is used for drying materials; the output end of the inner cylinder is connected to a tail gas pipeline through a rotary joint; the tail gas pipeline is directly or indirectly connected to the input end of the outer cylinder through a pipeline; the input end of the outer cylinder is communicated with a feed inlet, and the output end is communicated with a discharge outlet; conveying blades are arranged on the inner wall of the outer cylinder;
[0011] One end of the outer cylinder is arranged inside the furnace; a fire pipe is arranged on the part of the outer cylinder inside the furnace, the fire pipe is arranged between the outer cylinder and the inner cylinder, one end of the fire pipe is communicated with the inner cylinder, and the other end passes through the outer cylinder and is communicated with the outside world.
[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0013] 1. No need to connect a hot blast stove: The equipment directly utilizes the heat generated by the combustion of the furnace, without an additional hot blast stove, which simplifies the system design and reduces the cost. Traditional dryers need to connect a hot blast stove to access heat energy, and at the same time, a high-power fan is required to suck hot air from the hot blast stove into the dryer; while this equipment directly utilizes the heat energy of the furnace, the resistance of hot air flow is smaller, the energy consumption of the fan can be reduced, and the air extraction volume only needs to be less than 10% of the original, greatly reducing the waste of heat energy emissions.
[0014] 2. Improve the heat energy utilization efficiency: Through the structure of the fire pipe, the heat energy generated by the furnace heats the outer cylinder and the inner cylinder at the same time, improving the heat energy utilization efficiency.
[0015] 3. Recycling of tail gas: The tail gas returns to the inside of the outer cylinder through a pipeline, directly heats the material, and at the same time realizes the sedimentation and purification of the tail gas, reducing environmental pollution.
[0016] 4. Structure optimization: Through the structural design of the conical fire pipe, spiral blades, etc., the heat transfer efficiency and the drying uniformity of the material are improved.
[0017] As a further improvement of the above solution, the fire pipe is conical, and the diameter of the end connected to the outer cylinder is larger than the diameter of the end connected to the inner cylinder.
[0018] The technical effect of the above improvement is: The effect of collecting heat energy by the inner cylinder can be further improved.
[0019] As a further improvement of the above solution, the tail gas pipeline is connected to a second fan and a second dust collector; the outlet of the second dust collector is communicated with the input end of the outer cylinder through a pipeline.
[0020] The technical effect of the above improvement is: The flow rate of the hot air is increased by the second fan, and after the hot air is dust-removed once by the second dust collector, the purified hot air enters the outer cylinder.
[0021] As a further improvement of the above solution, an exhaust port is arranged at the output end of the outer cylinder, and the exhaust port is connected to a first fan and a first dust collector through a pipeline.
[0022] The technical effect of the above improvement is: The tail gas coming out of the outer cylinder can enter the first dust collector for primary purification treatment.
[0023] As a further improvement of the above solution, spiral blades are arranged inside the inner cylinder.
[0024] The technical effects of the above improvements are as follows: The utilization rate of thermal energy can be improved through the spiral blades, and the residence time of the flame in the inner cylinder can be increased.
[0025] As a further improvement of the above solution, the pitch of the spiral blades gradually increases towards the output end of the inner cylinder.
[0026] The technical effects of the above improvements are as follows: The flow uniformity of the hot air in the inner cylinder is improved.
[0027] As a further improvement of the above solution, heat dissipation fins are provided on the outer wall of the inner cylinder.
[0028] The technical effects of the above improvements are as follows: The heating effect of the inner cylinder on the material is improved, and the utilization rate of thermal energy is increased.
[0029] As a further improvement of the above solution, the input end of the inner cylinder is closed. Description of the Drawings
[0030] Figure 1 It is a schematic diagram of the overall structure of the present invention.
[0031] Figure 2 It is a schematic diagram of the end face structure of the present invention.
[0032] Figure 3 It is a schematic diagram of the structure with heat dissipation fins provided on the inner cylinder.
[0033] Figure 4 It is a schematic diagram of the end face structure of the layout of the outer cylinder and the furnace with heat dissipation fins provided on the inner cylinder.
[0034] In the figure: 1. First fixed cylinder; 2. Feed inlet; 3. Furnace cover; 4. Fire pipe; 5. Outer cylinder; 6. Inner cylinder; 7. Second fixed cylinder; 8. Exhaust port; 9. Discharge port; 10. Furnace; 11. First fan; 12. First dust collector; 13. Second fan; 14. Second dust collector; 15. Conveyor blade; 16. Machine base; 17. Driving wheel; 18. Heat dissipation fin. Detailed Embodiments
[0035] In order to enable those skilled in the art to better understand the technical solution, the present invention will be described in detail below in conjunction with embodiments. The description of this part is only exemplary and explanatory, and should not have any restrictive effect on the protection scope of the present invention.
[0036] Such as Figures 1-4As shown in the figure, the specific solution of this embodiment is as follows: A wet material drying device includes a machine base 16, and a rotatable outer cylinder 5 is arranged on the machine base 16; an inner cylinder 6 is coaxially arranged inside the outer cylinder 5, and the interlayer cavity between the outer cylinder 5 and the inner cylinder 6 is used for drying materials; the output end of the inner cylinder 6 is connected to the tail gas pipeline through a rotary joint; the tail gas pipeline is directly or indirectly connected to the input end of the outer cylinder 5; the input end of the outer cylinder 5 is communicated with the feed inlet 2, and the output end is communicated with the discharge outlet 9; conveying blades 15 are arranged on the inner wall of the outer cylinder 5;
[0037] One end of the outer cylinder 5 is arranged inside the furnace 10; a fire pipe 4 is arranged on the part of the outer cylinder 5 inside the furnace 10, the fire pipe 4 is arranged between the outer cylinder 5 and the inner cylinder 6, one end of the fire pipe 4 is communicated with the inner cylinder 6, and the other end passes through the outer cylinder 5 and is communicated with the outside.
[0038] Specifically, the outer cylinder is made of stainless steel. An inner cylinder 6 is coaxially arranged inside the outer cylinder. The inner cylinder is made of heat-resistant material and has a length similar to or slightly longer than that of the outer cylinder. The interlayer cavity between the outer cylinder and the inner cylinder is designed for drying materials. The output end of the inner cylinder is connected to the tail gas pipeline through a high-temperature resistant rotary joint. The tail gas pipeline is made of heat-resistant steel pipe and is directly connected to the input end of the outer cylinder to form a closed-loop system. The input end of the outer cylinder is provided with a feed inlet 2, and the output end is provided with a discharge outlet 9, both of which are made of stainless steel and equipped with sealing devices to prevent heat loss. A series of conveying blades 15 are evenly arranged on the inner wall of the outer cylinder to push the movement of materials during the drying process.
[0039] It also includes a machine base 16, a driving wheel 17 is arranged on the machine base 16, the driving wheel 17 is connected to the driving motor through a chain or a belt; there are two groups of driving wheels 17, two in each group, and the two groups of driving wheels 17 respectively support both ends of the outer cylinder 5; an annular track or a toothed ring is arranged on the outer wall of the outer cylinder 5 to cooperate with the driving wheel 17; the outer cylinder 5 is driven to rotate by the driving wheel 17, the inner cylinder 6 and the outer cylinder 5 are fixed to each other to form synchronous rotation, and the inner cylinder 6 and the outer cylinder 5 are connected to each other through internal connecting rods;
[0040] Both ends of the outer cylinder 5 are respectively rotatably connected to a first fixed cylinder 1 and a second fixed cylinder 7; the fixed cylinders are installed on the machine base 16 and do not rotate. A feed inlet 2 is arranged above the first fixed cylinder 1, and a discharge outlet 9 is arranged at the bottom or the end of the second fixed cylinder 7; an exhaust port 8 is designed above the second fixed cylinder 7; an inclined plate can be designed inside the first fixed cylinder 1 to guide the sand coming in from the feed inlet 2 so that the sand falls into the outer cylinder 5.
[0041] A furnace hood 3 is arranged on the furnace 10, the outer cylinder 5 is located inside the furnace hood 3, the flame burns inside the furnace hood 3 and passes through the fire pipe 4 into the inner cylinder 6.
[0042] Such as Figure 2As shown, as a preferred embodiment of the above-mentioned embodiment, the fire through pipe 4 is conical, and the diameter of the end connected to the outer cylinder 5 is larger than that of the end connected to the inner cylinder 6.
[0043] Specifically, the fire through pipe 4 is designed to be conical. Such a design helps to improve the concentration and transfer efficiency of heat energy, enabling the inner cylinder to more effectively collect the heat generated by the furnace 10.
[0044] As Figure 1 shown, as a preferred embodiment of the above-mentioned embodiment, the tail gas pipeline is connected to the second fan 13 and the second dust collector 14; the outlet of the second dust collector 14 is connected to the input end of the outer cylinder 5 through a pipeline.
[0045] The second fan 13 is used to increase the flow rate of the hot air, ensuring that the hot air can quickly pass through the cavity between the outer cylinder 5 and the inner cylinder 6. The second dust collector 14 is used to remove dust and other particulate matters in the tail gas, and the purified hot air re-enters the input end of the outer cylinder 5 through the pipeline, realizing the recycling of the hot air.
[0046] As Figure 1 shown, as a preferred embodiment of the above-mentioned embodiment, an exhaust port 8 is provided at the output end of the outer cylinder 5, and the exhaust port 8 is connected to the first fan 11 and the first dust collector 12 through a pipeline.
[0047] The first fan 11 is used to extract the tail gas in the outer cylinder 5, and the first dust collector 12 is used to purify the tail gas, reducing environmental pollution.
[0048] As Figure 1 shown, as a preferred embodiment of the above-mentioned embodiment, spiral blades are provided inside the inner cylinder 6. These spiral blades are made of heat-resistant materials and are distributed along the axis of the inner cylinder 6, used to promote the spiral movement of the hot air inside the inner cylinder 6, facilitating the full contact between the inner cylinder and the hot air, and improving the drying efficiency.
[0049] As Figure 1 shown, as a preferred embodiment of the above-mentioned embodiment, the pitch of the spiral blades gradually increases towards the output end of the inner cylinder 6.
[0050] As Figures 3-4 shown, as a preferred embodiment of the above-mentioned embodiment, heat dissipation fins 18 are provided on the outer wall of the inner cylinder 6. These heat dissipation fins are made of high-efficiency heat conduction materials, which help to improve the heating effect of the inner cylinder 6 on the materials and at the same time improve the utilization rate of heat energy.
[0051] As Figure 1 shown, as a preferred embodiment of the above-mentioned embodiment, the input end of the inner cylinder 6 is closed. The input end of the inner cylinder 6 is designed to be a closed structure to prevent the steam generated due to high humidity at the initial stage of drying from leaking out, ensuring the stability and efficiency of the drying process.
[0052] The specific working principle of the present utility model:
[0053] Conveying process of sand:
[0054] Sand enters the outer cylinder 5 from the feed inlet 2. When the outer cylinder 5 rotates, it drives the sand to roll and move forward at the same time. The rolling sand will fall onto the inner cylinder 6. The inner cylinder 6 emits heat to heat and dry the sand, and the heat dissipation fins 18 on the outer wall of the inner cylinder 6 will improve the drying efficiency.
[0055] Conveying process of hot air:
[0056] The furnace 10 directly heats the outer cylinder 5. The heat energy passes through the fire pipe 4 and enters the inner cylinder 6 to heat the inner cylinder 6; it flows along the inner cylinder 6 and is discharged from the tail gas pipe, and then is driven by the second fan 13 to enter the second dust collector 14 for primary filtration, and then returns to the input end of the outer cylinder 5 through the pipe to directly heat the sand in the outer cylinder 5. At the same time, the sand is used to form a primary absorption and purification of the tail gas. Finally, the hot air passes through the outer cylinder 5 and is discharged from the exhaust port 8 at the output end, and after being accelerated by the first fan 11, it enters the first dust collector 12 for primary purification treatment.
[0057] It should be noted that in this article, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. In this article, specific examples are used to elaborate on the principle and implementation manner of the technical solution of the present utility model. The description of the above examples is only used to help understand the method and its core idea of the present utility model. The above is only the preferred implementation manner of the present utility model. It should be pointed out that due to the limited nature of written expression and the objectively infinite specific structures, for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements, refinements or changes can be made, or the above technical features can be combined in an appropriate manner; these improvements, refinements, changes or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without improvement, shall all be regarded as the protection scope of the present utility model.
Claims
1. A wet material drying device, comprising a machine base (16), characterized in that, A rotatable outer cylinder (5) is provided on the machine base (16); an inner cylinder (6) is arranged inside the outer cylinder (5), and the interlayer cavity between the outer cylinder (5) and the inner cylinder (6) is used for drying materials; the output end of the inner cylinder (6) is communicated with the tail gas pipeline; the tail gas pipeline is directly or indirectly connected to the input end of the outer cylinder (5); the input end of the outer cylinder (5) is communicated with the feed inlet (2), and the output end is communicated with the discharge outlet (9); conveying blades (15) are arranged on the inner wall of the outer cylinder (5). One end of the outer cylinder (5) is arranged in the furnace (10); a fire passing pipe (4) is arranged on the part of the outer cylinder (5) located in the furnace (10), the fire passing pipe (4) is arranged between the outer cylinder (5) and the inner cylinder (6), one end of the fire passing pipe (4) is communicated with the inner cylinder (6), and the other end passes through the outer cylinder (5) and is communicated with the outside.
2. The wet material drying equipment according to claim 1, characterized in that, The fire passing pipe (4) is conical, and the diameter of the end connected to the outer cylinder (5) is larger than the diameter of the end connected to the inner cylinder (6).
3. The wet material drying equipment according to claim 1, characterized in that, The tail gas pipeline is connected to the second blower (13) and the second dust collector (14); the outlet of the second dust collector (14) is communicated with the input end of the outer cylinder (5) through a pipeline.
4. A wet material drying device according to claim 1, characterized in that, An exhaust port (8) is arranged at the output end of the outer cylinder (5), and the exhaust port (8) is connected to the first blower (11) and the first dust collector (12) through a pipeline.
5. A wet material drying device according to claim 1, characterized in that, Spiral blades are arranged inside the inner cylinder (6).
6. The wet material drying equipment according to claim 5, characterized in that, The pitch of the spiral blades gradually increases towards the output end of the inner cylinder (6).
7. A wet material drying device according to claim 1, characterized in that, Radiating fins (18) are arranged on the outer wall of the inner cylinder (6).
8. A wet material drying device according to claim 1, wherein, The input end of the inner cylinder (6) is closed.