Air distribution device of air outlet at tail end of air duct

Abstract

An air distribution device of an air outlet at the tail end of an air duct comprises a plurality of frameworks distributed linearly, each framework comprises a fixing ring and a first mounting ring which are sequentially arranged in the flowing direction of air flow in the air duct and fixedly connected, and the inner diameter of each fixing ring is larger than that of each first mounting ring; inner holes of the fixing rings and inner holes of the first installation rings form a main air channel allowing air flow in the air duct to pass through, the fixing rings and the first installation rings of the adjacent frameworks are connected through a plurality of fixing assemblies, a distance exists between the adjacent fixing assemblies to form a plurality of first auxiliary air channels, and the fixing ring of the first framework is fixedly arranged in the air outlet. According to the utility model, the flexibility in use and adjustment is ensured while uniform air flow distribution is realized.

Description

Technical Field

[0001] This utility model relates to the field of ventilation technology in coal mines, specifically to an air distribution device at the end outlet of a ventilation duct. Background Technology

[0002] In underground coal mine operations, the ventilation system is one of the key components ensuring miner safety and production efficiency. As an important part of the ventilation system, the ventilation duct is mainly used to introduce airflow generated by surface ventilation equipment into the underground working face to dilute and expel harmful gases and dust from the mine, while also regulating underground temperature and humidity to create a safe and healthy working environment for miners.

[0003] However, in practical use, relying solely on a single air outlet at the end of the ventilation duct leads to airflow concentration in the area directly in front of the outlet, resulting in uneven airflow distribution, which in turn reduces ventilation efficiency and increases the energy consumption of the ventilation equipment. To solve this problem, a common approach in existing technologies is to use a fixed tee to distribute airflow, but this method lacks flexibility. Utility Model Content

[0004] To address the issue of poor flexibility in airflow distribution achieved by existing fixed tees, this invention provides an air distribution device at the end outlet of a duct, which achieves uniform airflow distribution while ensuring flexibility during use and adjustment.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: an air distribution device for the air outlet at the end of a wind tunnel, comprising multiple frames distributed in a straight line, each frame including a fixed ring and a first mounting ring arranged sequentially and fixedly connected along the airflow direction inside the wind tunnel, the inner diameter of the fixed ring being larger than the inner diameter of the first mounting ring, the inner hole of the fixed ring and the inner hole of the first mounting ring forming a main air duct for the airflow in the wind tunnel to pass through, the fixed rings and first mounting rings of adjacent frames being connected by several fixed components, and there being a distance between adjacent fixed components to form several first secondary air ducts, the fixed ring of the first frame being fixedly disposed inside the air outlet.

[0006] As a further optimization of the air distribution device at the end of the air duct of the utility model: the fixing ring and the first mounting ring are connected by several connecting rods, and a second secondary air duct is formed between adjacent connecting rods.

[0007] As a further optimization of the air distribution device at the end of the air duct of the utility model: a sealing cloth is wrapped between the fixing ring and the first mounting ring of part of the frame, and the sealing cloth is fixedly connected to the connecting rod to seal the second secondary air duct.

[0008] As a further optimization of the air distribution device at the end of the air duct of the utility model: a second mounting ring is fixedly sleeved on the first mounting ring, and the first mounting ring and the second mounting ring are connected by multiple mounting rods, forming a third secondary air duct between adjacent mounting rods.

[0009] As a further optimization of the air distribution device at the end of the air duct of the utility model: the fixing ring of the adjacent frame and the second mounting ring are connected by the fixing component.

[0010] As a further optimization of the air distribution device at the end of the air duct of the utility model: the fixing component includes two retaining rings that correspond one-to-one with the fixing ring and the second mounting ring. The retaining rings are provided with notches, and the fixing ring and the second mounting ring pass through the notches and enter the inner hole of the retaining rings. The two retaining rings are connected by a connector.

[0011] As a further optimization of the air distribution device at the end of the air duct of the utility model: two opposing rubber layers are fixedly provided at the notch, and the rubber layers are used to prevent the fixing ring and the second mounting ring from falling off the retaining ring.

[0012] As a further optimization of the air distribution device at the end of the air duct of the utility model: the connecting part includes a double-headed turnbuckle and two fixed threaded sleeves that are connected one-to-one with the retaining ring, and the two ends of the double-headed turnbuckle are respectively inserted into one of the fixed threaded sleeves.

[0013] As a further optimization of the air distribution device at the end of the air duct of the utility model: the first mounting ring, the second mounting ring and the fixing ring of the adjacent frame are arranged concentrically.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This invention features multiple linearly distributed frames, each including a fixed ring and a first mounting ring sequentially arranged and fixedly connected along the airflow direction within the duct. The inner holes of the fixed rings and the first mounting rings form a main air duct through which the airflow passes. The fixed rings and first mounting rings of adjacent frames are connected by several fixing components, with a distance between adjacent fixing components to form several first secondary air ducts. The fixed ring of the first frame is fixedly installed inside the air outlet. This invention can disperse the airflow in multiple directions, ensuring a more uniform distribution of airflow within a certain range, allowing the airflow to be evenly distributed to various areas, avoiding the occurrence of ventilation dead zones, and ensuring flexibility during use and adjustment. Attached Figure Description

[0016] Figure 1 This is an installation diagram of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of this utility model;

[0018] Figure 3 This is the front view of this utility model;

[0019] Figure 4 This is a schematic diagram showing the connection between the fixing ring and the second mounting ring of the adjacent skeleton;

[0020] Figure 5 This is a schematic diagram of a fixed component;

[0021] The markings in the diagram are: 1. Fixing ring, 2. First mounting ring, 3. Connecting rod, 4. First secondary air duct, 5. Second mounting ring, 6. Mounting rod, 7. Third secondary air duct, 8. Main air duct, 9. Sealing cloth, 10. Air duct, 11. Fixing component, 12. Fixing threaded sleeve, 13. Double-ended turnbuckle, 14. Snap ring, 15. Rubber layer. Detailed Implementation

[0022] The technical solution of this utility model will be further described in detail below with reference to specific embodiments. Parts not described or disclosed in detail in the following embodiments of this utility model should be understood as prior art known or should be known by those skilled in the art, such as the material of the sealing cloth 9, the specific structure of the air duct 10, the model of the fixed threaded sleeve 12 and the double-headed turnbuckle 13, and the material of the rubber layer 15, etc.

[0023] Example 1

[0024] An air distribution device at the end outlet of a ventilation duct, such as Figures 1 to 3 As shown, the structure includes multiple frames distributed along a straight line. Each frame includes a fixed ring 1 and a first mounting ring 2 that are sequentially arranged and fixedly connected along the airflow direction inside the air duct 10. The inner diameter of the fixed ring 1 is larger than the inner diameter of the first mounting ring 2. The inner holes of the fixed ring 1 and the first mounting ring 2 form a main air duct 8 through which the airflow in the air duct 10 passes. The fixed rings 1 and first mounting rings 2 of adjacent frames are connected by several fixing components 11, and there is a distance between adjacent fixing components 11 to form several first secondary air ducts 4. The fixed ring 1 of the first frame is fixedly installed inside the air outlet.

[0025] The fixing ring 1 of the first frame is fixedly installed inside the air outlet of the air duct 10. The outer diameter of the fixing ring 1 is the same as the inner diameter of the air outlet of the air duct 10. The specific fixing method is conventional prior art in this field and will not be described in detail here. After fixing the first frame inside the air outlet, the second frame is installed. The fixing ring 1 of the second frame is fixedly connected to the first mounting ring 2 of the first frame. Adjacent frames are then connected in the same manner as described above. The specific number of frames can be selected according to the actual situation.

[0026] After all the frames are installed, some of the airflow inside the ventilation duct 10 will flow along the main air duct 8 formed by the inner hole of the fixing ring 1 and the inner hole of the first mounting ring 2; and because there is a distance between adjacent fixing components 11 forming several first secondary air ducts 4, some of the airflow inside the ventilation duct 10 will flow out from the first secondary air ducts 4. This utility model can disperse the airflow to multiple directions, ensuring that the airflow is more evenly distributed within a certain range, so that the airflow can be evenly distributed to various areas, avoiding the occurrence of ventilation dead zones, and ensuring flexibility during use and adjustment; in addition, this utility model can reduce the situation of excessively high local wind speed at the end of the ventilation duct 10, thereby reducing the wear of the ventilation duct 10 caused by the impact of high-speed airflow; on the one hand, due to the even distribution of airflow, the risk of underground gas accumulation is reduced, ensuring a safe working environment; at the same time, it avoids the waste of energy caused by excessively high local wind speed; on the other hand, it reduces the energy consumption of the fan, and through reasonable air distribution, the airflow distribution in the space is more reasonable, avoiding the situation of excessively high local wind speed caused by uneven ventilation, which wastes energy. This invention can also extend the service life of the equipment. The ventilation equipment such as fans and filters connected to the air duct 10, as well as the air distribution device, make the airflow entering these devices more uniform and stable, reduce the impact and vibration of the equipment caused by uneven airflow, reduce the maintenance and replacement of the equipment, and reduce production interruptions caused by equipment failure.

[0027] The above are the basic embodiments of this utility model. Further improvements, optimizations, and limitations can be made based on the above to obtain the following embodiments:

[0028] Example 2

[0029] This embodiment is an improvement on embodiment 1. Its main structure is the same as that of embodiment 1, but the improvement lies in: [The following is a more detailed description of the improvement.] Figures 1 to 3 As shown, the fixing ring 1 and the first mounting ring 2 are connected by several connecting rods 3, and a second secondary air duct is formed between adjacent connecting rods 3. A sealing cloth 9 is wrapped around the fixing ring 1 and the first mounting ring 2 of the frame, and the sealing cloth 9 is fixedly connected to the connecting rods 3 to seal the second secondary air duct.

[0030] To further disperse the airflow in multiple directions, the fixing ring 1 of the second frame and the first mounting ring 2 of the first frame are connected by several connecting rods 3. Subsequent frames are also connected to the preceding adjacent frames in this manner. The distance between adjacent connecting rods 3 forms a second secondary air duct, allowing some airflow to exit from it. To ensure the airflow through the main air duct 8, a sealing cloth 9 is wrapped between the fixing ring 1 and the first mounting ring 2 of a portion of the frame. The sealing cloth 9 is fixed to the connecting rods 3 by adhesive, sealing the second secondary air duct. Whether or not to seal the second secondary air duct can be selected according to actual needs.

[0031] Example 3

[0032] This embodiment is an improvement on embodiment 1. Its main structure is the same as that of embodiment 1, but the improvement lies in: [The following is a more detailed description of the improvement.] Figures 1 to 3 As shown, to further disperse the airflow in multiple directions, a second mounting ring 5 is fixedly fitted onto the first mounting ring 2. The first mounting ring 2 and the second mounting ring 5 are connected by multiple mounting rods 6, and a third secondary air duct 7 is formed between adjacent mounting rods 6. In this way, some airflow can flow out from the third secondary air duct 7. The first mounting ring 2, the second mounting ring 5, and the fixed ring 1 of the adjacent frame are concentrically arranged.

[0033] Example 4

[0034] This embodiment is an improvement on embodiment 3. Its main structure is the same as that of embodiment 3, but the improvement lies in: [The following is a more detailed description of the improvement.] Figure 1 As shown, the fixing ring 1 and the second mounting ring 5 of adjacent frames are connected by the fixing assembly 11. Based on the second mounting ring 5, the first mounting ring 2 and the second mounting ring 5 are connected by multiple mounting rods 6. Alternatively, in two adjacent frames, the fixing ring 1 of one frame and the second mounting ring 5 of the other frame are connected by the aforementioned fixing assembly 11; or they are connected by fixing rods, with both ends of the fixing rods welded to the fixing ring 1 and the second mounting ring 5 of the adjacent frames, respectively.

[0035] Furthermore, for ease of disassembly and subsequent recycling, such as Figure 4 and Figure 5 As shown, the fixing component 11 includes two retaining rings 14 corresponding one-to-one with the fixing ring 1 and the second mounting ring 5. Each retaining ring 14 has a notch, through which the fixing ring 1 and the second mounting ring 5 pass into the inner hole of the retaining ring 14. The two retaining rings 14 are connected by a connector. The retaining rings 14 are made of elastic material, and the diameter of the notch is smaller than the ring width of the fixing ring 1 and the ring width of the second mounting ring 5. The fixing ring 1 and the second mounting ring 5 are pressed through the notch into the interior of the retaining ring 14, preventing them from detaching. Furthermore, to further ensure the stability of the fixing ring 1 and the second mounting ring 5 within the retaining ring 14, two opposing rubber layers 15 are fixedly provided at the notch. The rubber layers 15 prevent the fixing ring 1 and the second mounting ring 5 from falling out of the retaining ring 14. The rubber layers 15 further prevent the fixing ring 1 and the second mounting ring 5 from falling out of the retaining ring 14 without interfering with their installation.

[0036] The connector includes a double-ended turnbuckle 13 and two fixed threaded sleeves 12 that are connected one-to-one with the retaining ring 14. The two ends of the double-ended turnbuckle 13 are respectively inserted into one of the fixed threaded sleeves 12.

[0037] Because the two ends of the double-ended turnbuckle 13 have different thread directions, both ends can simultaneously extend into or out of the fixing threaded sleeve 12. To reduce the distance between the two retaining rings 14, rotate the double-ended turnbuckle 13 in the first rotation direction; to increase the distance, rotate it in the second rotation direction. The first and second rotation directions are opposite to each other. This design of the double-ended turnbuckle 13 allows for adjustment of the distance between the two retaining rings 14, better adapting to practical application scenarios and allowing for flexible adjustment based on the actual distance.

[0038] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An air distribution device for the air outlet at the end of a ventilation duct, characterized in that: The system includes multiple frames distributed along a straight line. Each frame includes a fixed ring (1) and a first mounting ring (2) that are sequentially arranged and fixedly connected along the airflow direction inside the air duct (10). The inner diameter of the fixed ring (1) is larger than the inner diameter of the first mounting ring (2). The inner holes of the fixed ring (1) and the first mounting ring (2) form a main air duct (8) through which the airflow in the air duct (10) passes. The fixed rings (1) and first mounting rings (2) of adjacent frames are connected by several fixed components (11), and there is a distance between adjacent fixed components (11) to form several first secondary air ducts (4). The fixed ring (1) of the first frame is fixedly arranged inside the air outlet.

2. The air distribution device at the end outlet of the air duct as described in claim 1, characterized in that: The fixing ring (1) and the first mounting ring (2) are connected by several connecting rods (3), and a second secondary air duct is formed between adjacent connecting rods.

3. The air distribution device at the end outlet of the air duct as described in claim 2, characterized in that: A sealing cloth (9) is wrapped around the fixing ring (1) and the first mounting ring (2) of the skeleton, and the sealing cloth (9) is fixedly connected to the connecting rod (3) to seal the second auxiliary air duct.

4. The air distribution device at the end outlet of the air duct as described in claim 1, characterized in that: A second mounting ring (5) is fixedly sleeved on the first mounting ring (2). The first mounting ring (2) and the second mounting ring (5) are connected by multiple mounting rods (6), and a third secondary air duct (7) is formed between adjacent mounting rods (6).

5. The air distribution device at the end outlet of the air duct as described in claim 4, characterized in that: The fixing ring (1) and the second mounting ring (5) of the adjacent skeleton are connected by the fixing component (11).

6. The air distribution device at the end outlet of the air duct as described in claim 5, characterized in that: The fixing component (11) includes two retaining rings (14) that correspond one-to-one with the fixing ring (1) and the second mounting ring (5). The retaining rings (14) have notches, and the fixing ring (1) and the second mounting ring (5) pass through the notches and enter the inner hole of the retaining rings (14). The two retaining rings (14) are connected by a connector.

7. The air distribution device at the end outlet of the air duct as described in claim 6, characterized in that: Two opposing rubber layers (15) are fixedly provided at the notch, and the rubber layers (15) are used to prevent the fixing ring (1) and the second mounting ring (5) from falling off from the retaining ring (14).

8. The air distribution device at the end outlet of the air duct as described in claim 6, characterized in that: The connector includes a double-ended turnbuckle (13) and two fixed threaded sleeves (12) that are connected one-to-one with the retaining ring (14). The two ends of the double-ended turnbuckle (13) are respectively inserted into one of the fixed threaded sleeves (12).

9. The air distribution device at the end outlet of the air duct as described in claim 4, characterized in that: The first mounting ring (2), the second mounting ring (5), and the fixing ring (1) of the adjacent skeletons are arranged concentrically.

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