Hot air circulation type pulverized coal drying device
The design of the hot air circulating coal powder drying device solves the problem of uneven heating in the existing device, realizes uniform heating and efficient drying of coal powder, improves the overall drying efficiency, and prevents coal powder from overflowing.
Patent Information
- Application Number
- CN202520668735.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-10
- Publication Date
- 2026-03-03
- Estimated Expiration
- 2035-04-10
AI Technical Summary
Existing pulverized coal drying equipment cannot achieve sufficient mixing and uniform heating during the drying process, resulting in uneven heat transfer and affecting drying efficiency.
A hot air circulating coal powder drying device is designed, which adopts a drying component and a vibration component. Through the cooperation of a heating injection pump, hollow tube, stirring tube and stirring plate, hot air circulation and stirring are achieved. Combined with the push plate and filter plate design of the vibration component, the coal powder is ensured to be heated evenly and overflow is prevented.
It improves the contact efficiency between pulverized coal and hot air, ensures uniform heating, significantly improves drying efficiency, prevents pulverized coal overflow, and enhances the efficiency of the equipment.
Smart Images
Figure CN223965787U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of coal powder drying technology, and in particular to a hot air circulating coal powder drying device. Background Technology
[0002] Coal powder drying is an important process for improving the quality and storage and transportation performance of coal powder. It mainly involves making full contact between hot air or other drying media and coal powder, using heat to evaporate the moisture in the coal powder. During the drying process, the energy provided by the heat source is transferred to the coal powder, causing the water molecules to gain enough energy to turn into a gaseous state and escape from the surface of the coal powder particles. Appropriate conditions such as temperature, airflow speed and drying time are crucial to the drying effect. The reduced moisture content of the dried coal powder can improve its fluidity, making it easier for subsequent storage, transportation and more efficient combustion, and reducing problems such as incomplete combustion caused by excessive moisture.
[0003] However, in most common commercially available devices, the actual use of these devices involves simply using a hot air blower to dry pulverized coal. The problem with this type of device is that it cannot effectively dry the pulverized coal thoroughly or mix it evenly during the drying process. Because it cannot efficiently dry the pulverized coal and stir it in a timely manner, the heat transfer is uneven, resulting in uneven heating of some pulverized coal and inconsistent rates and degrees of moisture evaporation. This not only greatly affects the final drying effect of the pulverized coal but also significantly reduces the efficiency of the entire drying process. Therefore, there is an urgent need to design a hot air circulating pulverized coal drying device to solve these problems. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing technologies that cannot effectively dry and stir coal powder, thereby reducing the efficiency of coal powder drying, and to propose a hot air circulating coal powder drying device.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A hot air circulating coal powder drying device includes a processing cylinder, a drying component is provided inside the processing cylinder, and a vibration component is provided at the top of the processing cylinder;
[0007] The drying assembly includes a heating injection pump. The interior of the processing cylinder has an annular groove, and the top of the processing cylinder has a rotating groove. A hollow tube is movably installed inside the rotating groove via a bearing. Stirring tubes distributed in an annular structure at equal intervals are bolted to the outer wall of the hollow tube. Stirring plates are bolted between the stirring tubes, and a flow groove is formed on the outer wall of the stirring tubes.
[0008] Preferably, the drying assembly further includes a motor, which is fixed to the top outer wall of the processing cylinder by bolts. The motor is connected to the hollow tube via a coupling. An exhaust pump is installed on one side of the top outer wall of the processing cylinder by bolts.
[0009] Preferably, the vibration assembly includes a connecting plate, and a connecting rod connected to the processing cylinder is bolted to the bottom outer wall of the connecting plate.
[0010] Preferably, a connecting seat is bolted to the bottom outer wall of the connecting plate, a stepper motor is bolted to the bottom outer wall of the connecting seat, and a cam is mounted to the output end of the stepper motor via a coupling.
[0011] Preferably, the vibration assembly further includes a filter plate, and the top outer wall of the filter plate is bolted with sliding rods extending to the outside of the processing cylinder, and a valve is provided at the bottom of the processing cylinder.
[0012] Preferably, a spring is sleeved on the outer wall of one end of the slide rod located outside the processing cylinder, and a push plate is fixedly installed at the top of the slide rod by bolts.
[0013] The beneficial effects of this utility model are as follows:
[0014] 1. Through the drying components, when the heating injection pump is turned on, hot air is injected into the annular groove. With the unique design of the annular groove, the inner wall of the processing cylinder can be heated efficiently, creating a stable and suitable temperature environment inside the entire device. During the flow of hot air, the hollow tube and the stirring tube work in tandem to allow the hot air to be recycled. This design completely abandons the single mode of existing devices that rely solely on direct hot air blowing, effectively avoiding the problem of uneven heating of coal powder caused by direct hot air blowing, and greatly avoiding the situation of reduced drying efficiency. Moreover, the motor and other components work together to powerfully and evenly stir the coal powder. As a result, the contact between the coal powder and the hot air is more sufficient, the heat exchange efficiency is greatly improved, and thus the drying efficiency of the coal powder is significantly improved.
[0015] 2. With the vibration component in place, when the stepper motor inside the vibration component is started, the stepper motor will drive the cam to rotate. When the cam rotates, it will drive the pusher plate to move due to its close contact with the pusher plate. During the movement of the pusher plate, it will pull the slide rod and filter plate to move together, and at the same time apply compression to the spring. In this way, when the drying component dries the coal powder, the coal powder will not overflow from the inside of the device, thereby enhancing the efficiency of the drying component. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of a hot air circulating coal powder drying device proposed in this utility model;
[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of a hot air circulating coal powder drying device proposed in this utility model;
[0018] Figure 3 This is a schematic diagram of the vibration component structure of a hot air circulating coal powder drying device proposed in this utility model;
[0019] Figure 4 This is a schematic diagram of the cross-sectional structure of the processing cylinder of a hot air circulating coal powder drying device proposed in this utility model.
[0020] In the diagram: 1. Processing cylinder; 2. Drying assembly; 21. Heating injection pump; 22. Annular groove; 23. Rotary groove; 24. Hollow tube; 25. Stirring tube; 26. Stirring plate; 27. Flow groove; 28. Motor; 29. Exhaust pump; 3. Vibration assembly; 31. Connecting plate; 32. Connecting rod; 33. Connecting seat; 34. Stepper motor; 35. Cam; 36. Push plate; 37. Slide rod; 38. Spring; 39. Filter plate; 310. Valve. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.
[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0024] Please also see Figures 1 to 4A hot air circulating coal powder drying device includes a processing cylinder 1, a drying component 2 is installed inside the processing cylinder 1, and a vibration component 3 is installed on the top of the processing cylinder 1.
[0025] The drying assembly 2 includes a heating injection pump 21. An annular groove 22 is formed inside the processing cylinder 1, and a rotating groove 23 is formed at the top of the processing cylinder 1. A hollow tube 24 is movably mounted inside the rotating groove 23 via bearings. Stirring tubes 25, evenly spaced and arranged in annular patterns, are bolted to the outer wall of the hollow tube 24. Stirring plates 26 are bolted between the stirring tubes 25. A flow groove 27 is formed on the outer wall of the stirring tubes 25. When the heating injection pump 21 is started, it heats the air and injects it into the annular groove 22. During the continuous injection of air, air enters the rotating groove 23. During the continuous injection process, air can be injected into the interior of the processing cylinder 1 through the hollow tube 24 and the flow channel 27, so that the air comes into contact with the coal powder, thereby achieving the drying treatment of the coal powder. The drying component 2 also includes a motor 28, which is fixed to the top outer wall of the processing cylinder 1 by bolts. The motor 28 is connected to the hollow tube 24 through a coupling. An exhaust pump 29 is installed on one side of the top outer wall of the processing cylinder 1 by bolts. When the motor 28 is started, the motor 28 can drive the hollow tube 24 to rotate through the coupling. The hollow tube 24 will drive the stirring plate 26 to rotate, thereby effectively stirring the coal powder.
[0026] See Figure 2 and Figure 3 The vibration assembly 3 includes a connecting plate 31. A connecting rod 32, which is connected to the processing cylinder 1, is bolted to the bottom outer wall of the connecting plate 31. The connecting rod 32 and the connecting plate 31 provide an installation position for the stepper motor 34. A connecting seat 33 is bolted to the bottom outer wall of the connecting plate 31. The stepper motor 34 is bolted to the bottom outer wall of the connecting seat 33. A cam 35 is mounted on the output end of the stepper motor 34 via a coupling. The connecting seat 33 provides an installation position for the stepper motor 34. When the stepper motor 34 is started, it drives the cam 35 to rotate. When the cam 35 rotates, it assists the movement of the push plate 36.
[0027] See Figure 1 , Figure 2 and Figure 3The vibration assembly 3 also includes a filter plate 39. The top outer wall of the filter plate 39 is bolted to both sides of a slide rod 37 extending to the outside of the processing cylinder 1. A valve 310 is provided at the bottom of the processing cylinder 1. When the slide rod 37 moves up and down, it can drive the filter plate 39 to move, allowing the filter plate 39 to move up and down inside the processing cylinder 1. A spring 38 is sleeved on the outer wall of the slide rod 37 located outside the processing cylinder 1. A push plate 36 is bolted to the top of the slide rod 37. When the push plate 36 moves, it can drive the slide rod 37 to move, and the slide rod 37 will squeeze the spring 38, thereby realizing the up and down vibration function of the filter plate 39.
[0028] Working Principle: In operation, pulverized coal is first injected into the processing cylinder 1. Then, the heating injection pump 21 is activated, heating external air and injecting it into the annular groove 22. During the flow of hot air, the inner wall of the processing cylinder 1 is heated. The hot air then enters the rotating groove 23 and the hollow tube 24. During continuous injection, the hot air is further injected into the processing cylinder 1 by the stirring tube 25 and the flow channel 27, heating both the hollow tube 24 and the stirring tube 25. At this point, the exhaust pump 29 is activated, expelling the air from the device. During the airflow... The filter plate 39 isolates dust from the airflow. When the motor 28 is started, it drives the hollow tube 24 to rotate. During the rotation of the hollow tube 24, it drives the stirring tube 25 and the stirring plate 26 to stir the material. After heating is completed, the coal dust is discharged outside the device by opening the valve 310. When the user wants to clean the filter plate 39, the stepper motor 34 is started. The stepper motor 34 drives the cam 35 to rotate. When the cam 35 rotates, it drives the slide rod 37 to move by its mutual contact with the push plate 36. The slide rod 37 also moves the filter plate 39 up and down, so that the coal dust on the surface of the filter plate 39 will fall off. When the push plate 36 moves, it squeezes the spring 38, thus perfecting the structure.
[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A hot air circulating coal powder drying device, comprising a processing cylinder (1), characterized in that, The processing cylinder (1) is equipped with a drying assembly (2) inside, and a vibration assembly (3) is equipped on the top of the processing cylinder (1); The drying assembly (2) includes a heating injection pump (21), an annular groove (22) is provided inside the processing cylinder (1), a rotating groove (23) is provided at the top of the processing cylinder (1), a hollow tube (24) is movably installed inside the rotating groove (23) via a bearing, and stirring tubes (25) are bolted to the outer wall of the hollow tube (24) in an equally spaced annular structure, stirring plates (26) are bolted between the stirring tubes (25), and a flow groove (27) is provided on the outer wall of the stirring tubes (25).
2. The hot air circulating coal powder drying device according to claim 1, characterized in that, The drying assembly (2) also includes a motor (28), which is fixed to the top outer wall of the processing cylinder (1) by bolts. The motor (28) is connected to the hollow tube (24) by a coupling. An exhaust pump (29) is installed on one side of the top outer wall of the processing cylinder (1) by bolts.
3. The hot air circulating coal powder drying device according to claim 1, characterized in that, The vibration assembly (3) includes a connecting plate (31), and a connecting rod (32) connected to the processing cylinder (1) is bolted to the bottom outer wall of the connecting plate (31).
4. A hot air circulating coal powder drying device according to claim 3, characterized in that, A connecting seat (33) is bolted to the bottom outer wall of the connecting plate (31), and a stepper motor (34) is bolted to the bottom outer wall of the connecting seat (33). A cam (35) is mounted on the output end of the stepper motor (34) via a coupling.
5. A hot air circulating coal powder drying device according to claim 1, characterized in that, The vibration assembly (3) also includes a filter plate (39), and the top outer wall of the filter plate (39) is bolted with slide rods (37) extending to the outside of the processing cylinder (1), and a valve (310) is provided at the bottom of the processing cylinder (1).
6. A hot air circulating coal powder drying device according to claim 5, characterized in that, A spring (38) is sleeved on the outer wall of one end of the slide rod (37) located outside the processing cylinder (1), and a push plate (36) is fixedly installed on the top end of the slide rod (37) by bolts.