Dust removal type air mixing device
By introducing a cyclone dust collector and dust collection bin into the grain drying equipment, the problems of high energy consumption and serious pollution when mixing hot and cold air in grain drying equipment are solved, achieving efficient and environmentally friendly air mixing, and reducing the operating cost and environmental impact of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-17
- Publication Date
- 2026-04-14
AI Technical Summary
Existing grain drying equipment suffers from high energy consumption, low efficiency, and serious pollution when mixing hot and cold air. In particular, improper temperature control when mixing hot and cold air can lead to the risk of grain bursting and environmental pollution.
A dust-removing air mixing device is adopted. By installing a cyclone dust collector in the mixing box to remove dust from the hot air discharged from the boiler, and using the side wall of the hot air chamber to preheat the cold air, the combination of the cyclone dust collector and the dust collection chamber improves the mixing efficiency and environmental friendliness of hot and cold air.
It effectively reduces energy consumption, improves air mixing efficiency, reduces pollution, lowers environmental pollution during grain drying, simplifies equipment structure, and facilitates cleaning and maintenance.
Smart Images
Figure CN224121536U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of air mixing technology, specifically relating to a dust-removing air mixing device. Background Technology
[0002] Grain drying is a crucial post-harvest step and an extremely important condition for safe grain storage. To reduce field losses and ensure quality, timely harvesting is generally required. However, grain harvested at this time usually has a high moisture content, making it unsuitable for storage. Therefore, all existing grain storage processes require grain drying.
[0003] Typical grain drying equipment refers to hot air drying boxes, which are devices that use coal, oil, or wood as fuel for heating. They can generate a large amount of hot air in a short time, killing insect eggs through high-temperature treatment and completely solving the grain drying problem. However, existing grain drying equipment produces a large amount of smoke and exhaust gas, resulting in high environmental pollution. Furthermore, the hot air supplied to the mixing chamber needs to be mixed with cold air from the outside to avoid excessively high temperatures that could cause grain to burst. However, when mixing low-temperature cold air with hot air, the low temperature requires higher-temperature hot air for mixing, resulting in high heat energy consumption and a long time to reach the target temperature. Overall, the mixing efficiency is low, and the cost is also high. Utility Model Content
[0004] The purpose of this invention is to provide a dust-removing air mixing device to solve the aforementioned problems existing in the prior art.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A dust-collecting air mixing device includes a mixing chamber. A hot air inlet is located on the left side wall of the mixing chamber, and an air outlet is located on the right side wall. The hot air inlet is connected to the flue gas outlet of a boiler. Multiple sets of cold air inlets are located on the front and rear side walls of the mixing chamber. The mixing chamber has a hollow mixing cavity. A flue gas chamber is located at the top of the mixing cavity, and a dust collection chamber is located at the bottom of the mixing cavity. A hot air chamber is located between the flue gas chamber and the dust collection chamber. Multiple sets of cyclone dust collectors are installed inside the hot air chamber. The opening of the hot air chamber is connected to the hot air inlet. The dust inlet of each cyclone dust collector is connected to the internal space of the hot air chamber. The top outlet of each cyclone dust collector is connected to the flue gas chamber, and the bottom outlet of each cyclone dust collector is connected to the dust collection chamber.
[0007] The working process and principle of the above structure are as follows:
[0008] The hot air inlet is connected to the boiler's exhaust port, allowing the flue gas generated after biomass combustion in the boiler to directly enter the hot air chamber through the hot air inlet. Since the hot air chamber is equipped with a cyclone dust collector, the incoming flue gas can be dusted before being transported to the exhaust chamber through the top outlet of the hot air chamber, and then to the grain drying chamber. At the same time, due to the thermal conductivity of the side wall of the hot air chamber, the cold air entering the mixing box through the cold air inlet can absorb heat for initial heating before being discharged through the outlet of the mixing box and then entering the grain drying chamber. This regulates the overall airflow temperature in the grain drying chamber, effectively reducing energy consumption and improving air mixing efficiency.
[0009] The bottom outlet of the cyclone dust collector is connected to a dust collection bin, which can effectively collect dust, facilitate cleaning, and effectively reduce pollution.
[0010] Furthermore, the bottom outlet of the cyclone dust collector passes through the bottom of the hot air chamber and connects to the smoke exhaust chamber, and the top outlet of the cyclone dust collector passes through the top of the hot air chamber and connects to the smoke exhaust chamber.
[0011] The working process and principle of the above structure are as follows:
[0012] The top outlets of multiple cyclone dust collectors are all connected to the smoke exhaust chamber. An opening can be made at the bottom of the smoke exhaust chamber to allow the hot air after dust removal by the cyclone dust collector to be initially mixed with the cold air entering from the cold air inlet.
[0013] Furthermore, the side wall of the dust collection bin has multiple sets of ash outlets.
[0014] The working process and principle of the above structure are as follows:
[0015] The ash outlet facilitates the cleaning of accumulated dust in the dust collection chamber.
[0016] Furthermore, the interior of the hot air chamber is equipped with at least two rows of symmetrically or staggered sets of multiple cyclone dust collectors.
[0017] The working process and principle of the above structure are as follows:
[0018] Increasing the number of cyclone dust collectors can improve dust removal efficiency.
[0019] Furthermore, a gap is provided between the outer wall of the hot air chamber and the inner wall of the mixing chamber.
[0020] The working process and principle of the above structure are as follows:
[0021] The gap between the hot air chamber and the inner wall of the mixing chamber can increase the heat absorption area of the low-temperature cold air entering through the cold air inlet, thereby improving the heat exchange efficiency.
[0022] Beneficial effects: This utility model sets up a hot air chamber in the mixing box to remove dust from the hot air input from the boiler, thereby improving environmental protection and energy efficiency. At the same time, it utilizes the heat conduction of the side wall of the hot air chamber to perform initial heat exchange on the low-temperature cold air, which effectively improves the mixing efficiency. Moreover, the overall structure is simple and reasonable, making it easy to promote and use. Attached Figure Description
[0023] Figure 1 This is a perspective structural diagram of the dust removal and air mixing device of this utility model;
[0024] Figure 2 This is a schematic diagram of the wind-powered conveying principle of the dust-removing air mixing device of this utility model, where the arrows indicate the flow path of the hot air discharged from the boiler.
[0025] Attached reference numerals: 1. Mixing box; 2. Hot air inlet; 3. Air outlet; 4. Cold air inlet; 5. Mixing chamber; 6. Smoke exhaust chamber; 7. Dust collection chamber; 8. Hot air chamber; 9. Cyclone dust collector; 10. Dust inlet; 11. Ash outlet. Detailed Implementation
[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the present utility model will be briefly introduced below in conjunction with the accompanying drawings and descriptions of the embodiments or the prior art. Obviously, the following description of the structure of the accompanying drawings is only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. It should be noted that the description of these embodiments is used to help understand this utility model, but does not constitute a limitation on this utility model.
[0027] Example:
[0028] like Figure 1 As shown, this embodiment provides a dust-collecting air mixing device, including a mixing box 1. A hot air inlet 2 is provided on the left side wall of the mixing box 1, and an air outlet 3 is provided on the right side wall of the mixing box 1. The hot air inlet 2 is connected to the flue gas outlet of a boiler. Multiple sets of cold air inlets 4 are provided on the front and rear side walls of the mixing box 1. The mixing box 1 has a hollow mixing chamber 5. A flue gas chamber 6 is provided at the top of the mixing chamber 5, and a dust collection chamber 7 is provided at the bottom of the mixing chamber 5. A hot air chamber 8 is provided between the flue gas chamber 6 and the dust collection chamber 7. Multiple sets of cyclone dust collectors 9 are provided inside the hot air chamber 8. The opening end of the hot air chamber 8 is connected to the hot air inlet 2. The dust inlet 10 of the cyclone dust collector 9 is connected to the internal space of the hot air chamber 8. The top outlet of the cyclone dust collector 9 is connected to the flue gas chamber 6, and the bottom outlet of the cyclone dust collector 9 is connected to the dust collection chamber 7.
[0029] The working process and principle of the above structure are as follows:
[0030] like Figure 2 As shown, the hot air inlet 2 is connected to the boiler's exhaust port, allowing the flue gas generated after biomass combustion in the boiler to directly enter the hot air chamber 8 through the hot air inlet 2. Since the hot air chamber 8 is equipped with a cyclone dust collector 9, the incoming flue gas can be dusted before being transported to the exhaust chamber 6 through the top outlet of the hot air chamber 8, and then to the grain drying chamber. At the same time, due to the thermal conductivity of the side wall of the hot air chamber 8, the cold air entering the mixing box 1 through the cold air inlet 4 can absorb heat for initial heating before being discharged through the air outlet 3 of the mixing box 1 and then entering the grain drying chamber. This regulates the overall airflow temperature in the grain drying chamber, effectively reducing energy consumption and improving air mixing efficiency.
[0031] In the above embodiment, the bottom outlet of the cyclone dust collector 9 is connected to the dust collection bin 7, which can effectively collect dust, facilitate cleaning, and effectively reduce pollution. The side wall of the dust collection bin 7 is provided with multiple sets of ash outlets 11, which facilitate cleaning the accumulated dust in the dust collection bin 7.
[0032] In the actual production process, the hot air chamber 8 is equipped with at least two rows of symmetrically or staggered multiple sets of cyclone dust collectors 9. Increasing the number of cyclone dust collectors 9 can improve the dust removal effect.
[0033] In another embodiment of this utility model, such as Figure 1 As shown, the bottom outlet of the cyclone dust collector 9 passes through the bottom of the hot air chamber 8 and connects to the smoke exhaust chamber 6, and the top outlet of the cyclone dust collector 9 passes through the top of the hot air chamber 8 and connects to the smoke exhaust chamber 6.
[0034] The working process and principle of the above structure are as follows:
[0035] The top outlets of multiple cyclone dust collectors 9 are all connected to the smoke exhaust chamber 6. An opening can be made at the bottom of the smoke exhaust chamber 6 to allow the hot air after dust removal by the cyclone dust collectors 9 to be initially mixed with the cold air entering through the cold air inlet 4.
[0036] In another embodiment of this utility model, such as Figure 1 As shown, a gap is provided between the outer wall of the hot air chamber 8 and the inner wall of the mixing chamber 5.
[0037] The working process and principle of the above structure are as follows:
[0038] The gap between the hot air chamber 8 and the inner wall of the mixing chamber 5 can increase the heat absorption area of the low-temperature cold air entering through the cold air inlet 4 and improve the heat exchange efficiency.
[0039] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.
Claims
1. A dust-collecting air mixing device, comprising a mixing chamber, wherein a hot air inlet is provided on the left side wall of the mixing chamber, and an air outlet is provided on the right side wall of the mixing chamber, the hot air inlet being connected to the flue gas outlet of a boiler, characterized in that, The mixing box has multiple sets of cold air inlets on its front and rear side walls, and the mixing box has a hollow mixing chamber inside. The top of the mixing chamber is provided with a smoke exhaust chamber, the bottom of the mixing chamber is provided with a dust collection chamber, a hot air chamber is provided between the smoke exhaust chamber and the dust collection chamber, and multiple sets of cyclone dust collectors are provided in the hot air chamber. The opening of the hot air chamber is connected to the hot air inlet, the dust inlet of the cyclone dust collector is connected to the internal space of the hot air chamber, the top outlet of the cyclone dust collector is connected to the smoke exhaust chamber, and the bottom outlet of the cyclone dust collector is connected to the dust collection chamber.
2. The dust-collecting mixing device according to claim 1, characterized in that, The bottom outlet of the cyclone dust collector passes through the bottom of the hot air chamber and connects to the smoke exhaust chamber, and the top outlet of the cyclone dust collector passes through the top of the hot air chamber and connects to the smoke exhaust chamber.
3. The dust-collecting mixing device according to any one of claims 1 or 2, characterized in that, The dust collection bin has multiple sets of ash outlets on its side wall.
4. The dust-collecting mixing device according to any one of claims 1 or 2, characterized in that, The hot air chamber is equipped with at least two rows of multiple sets of cyclone dust collectors arranged symmetrically or staggeredly.
5. The dust-collecting mixing device according to any one of claims 1 or 2, characterized in that, A gap is provided between the outer wall of the hot air chamber and the inner wall of the mixing chamber.