Ventilation pipe with dry-wet separation structure

Abstract

The utility model discloses a ventilation pipe with a dry-wet separation structure, and particularly relates to the technical field of ventilation pipes, the ventilation pipe comprises an outer pipe structure, a primary filter, an inner pipe structure and a secondary filter, the left side of the outer pipe structure is provided with a wet air inlet, and the inner pipe structure is arranged in an inner cavity of the outer pipe structure; by means of the inner and outer double-pipe structure composed of the outer pipe structure and the inner pipe structure, indoor humid air can be exhausted, meanwhile, dry air is introduced, the indoor relative humidity is controlled within a proper range, the indoor air quality is improved, and the stability of the environment is guaranteed; by means of the inner and outer double-pipe structure composed of the outer pipe structure and the inner pipe structure, the situation that wet air and dry air permeate mutually can be effectively avoided, the inner and outer double-pipe structure prevents the wet air and the dry air from being mixed, the purity of the dry air entering a processing area is ensured, meanwhile, the wet air containing pollutants can be safely exhausted, and the processing efficiency is improved. And secondary pollution to the indoor environment is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of ventilation pipes, and more specifically, to a ventilation pipe with a dry-wet separation structure. Background Art

[0002] Ventilation ducts are mainly used in industrial and construction projects. The main application areas include: dust-free workshop purification systems for the electronics industry, aseptic workshop purification systems for medicine and food, central air-conditioning systems for hotels, shopping malls, hospitals, factories and office buildings, exhaust ducts for dust removal, smoke exhaust, oil absorption, etc. for industrial pollution control, air supply ducts for industrial environment or workplace comfort, gas extraction systems for coal mine gas extraction, and supply and return air systems for coal mine environment control.

[0003] After searching, an existing patent (publication number: CN214889687U) discloses a ventilation duct noise reduction structure, including an outer tube, characterized in that a buffer layer for buffering noise is adhered around the inner surface of the outer tube, and a ventilation duct is provided on the inner surface of the buffer layer. An air inlet block is fixedly connected to one end of the interior of the ventilation duct by screws, and a plurality of silencer holes are arranged in an array inside the air inlet block. An air outlet block is provided inside the ventilation duct and directly opposite the air inlet block, and a plurality of air outlet holes are arranged in an array inside the air outlet block. The provision of silencer holes and a buffer layer in this utility model causes sound waves to be refracted multiple times inside the air inlet block, utilizing the noise-absorbing ability of the wood fibers in the wooden structure of the air inlet block, thereby reducing noise and avoiding the impact on humans outside the ventilation duct in the use environment. The buffer layer also absorbs vibrations generated by the ventilation duct, thereby increasing the service life of the ventilation duct. In the process of realizing this utility model, the inventor discovered that the existing technology has the following problems:

[0004] When existing ventilation ducts are used for ventilation, the replacement and mixing process of indoor air cannot proceed normally because moisture is extracted. The humidity in the area near the air extraction port drops faster, while the humidity in the area far from the air extraction port remains high. The indoor humidity will continue to rise, resulting in some moisture not being discharged. Some bacteria and mold continue to grow in moist corners or on the surface of objects. As the moist air accumulates indoors, it will contain microorganisms, odors and harmful chemicals. When this moist air mixes with dry air, the microorganisms will multiply, causing secondary pollution, leading to the spread of indoor environmental pollution and affecting the indoor environment.

[0005] Therefore, in order to solve the above problems, a ventilation pipe with a dry-wet separation structure is proposed. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a ventilation pipe with a dry-wet separation structure to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solution: a ventilation pipe with a dry-wet separation structure, comprising an outer tube structure, a primary filter, an inner tube structure and a secondary filter, a wet air inlet being opened on the left side of the outer tube structure, a first detachable limiting tube being installed on the left side of the wet air inlet, the primary filter being installed between the wet air inlet and the first detachable limiting tube, and an outer tube exhaust port being opened on the right side of the lower end of the outer tube structure;

[0008] The inner tube structure is arranged in the inner cavity of the outer tube structure, a dry air inlet is opened on the right side of the inner tube structure, a second detachable limiting tube is installed on one side of the dry air inlet, the secondary filter is installed between the dry air inlet and the second detachable limiting tube, and an inner tube exhaust pipe is opened on the left side of the upper end of the inner tube structure.

[0009] Preferably, a first DC fan is installed in the inner cavity on the left side of the outer tube structure, and a second DC fan is installed in the inner cavity on the right side of the inner tube structure.

[0010] Preferably, the wet air inlet is engaged with the first detachable limiting tube via a thread, and the first detachable limiting tube is engaged with the wet air inlet and abuts against one side of the primary filter.

[0011] Preferably, the dry air inlet is engaged with the second detachable limiting tube via a thread, and the second detachable limiting tube engages with the dry air inlet and abuts against one side of the secondary filter.

[0012] Preferably, one end of the inner tube structure away from the first DC fan passes through the center of the right side of the outer tube structure, and one end of the inner tube exhaust pipe away from the inner tube structure passes through the tube body of the outer tube structure.

[0013] Preferably, the primary filter is made of stainless steel, and the secondary filter is a dustproof net made of polyethylene.

[0014] Technical effects and advantages of this utility model:

[0015] 1. Compared with the existing technology, the ventilation duct with dry and wet separation structure can discharge the humid air in the room through the inner and outer double-tube structure composed of the outer tube structure and the inner tube structure, while introducing dry air, so as to control the indoor relative humidity within an appropriate range, improve the indoor air quality and ensure the stability of the environment.

[0016] 2. Compared with the existing technology, the ventilation duct with a dry-wet separation structure can effectively avoid the mutual infiltration of wet air and dry air through the inner and outer double-tube structure composed of the outer tube structure and the inner tube structure. The inner and outer double-tube structure prevents the mixing of wet and dry air, ensuring the purity of the dry air entering the processing area. At the same time, it can also safely discharge the wet air containing pollutants to prevent it from causing secondary pollution to the indoor environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model.

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the inner tube exhaust port of the utility model.

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the outer tube exhaust port of the utility model.

[0020] Figure 4 This is a schematic diagram of the three-dimensional structure of the dry air inlet of the utility model.

[0021] Figure 5 This is a schematic diagram of the three-dimensional structure of the wet air inlet of the utility model.

[0022] The accompanying drawings are marked as follows: 1. outer tube structure; 2. wet air inlet; 3. first detachable limiting tube; 4. primary filter; 5. inner tube structure; 6. dry air inlet; 7. second detachable limiting tube; 8. secondary filter; 9. inner tube exhaust pipe; 10. outer tube exhaust port; 11. first DC fan; 12. second DC fan. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Example 1

[0025] As attached Figures 1 to 5 The ventilation duct with a dry-wet separation structure shown in the figure includes an outer tube structure 1, a primary filter 4, an inner tube structure 5 and a secondary filter 8. A wet air inlet 2 is opened on the left side of the outer tube structure 1. A first detachable limit tube 3 is installed on the left side of the wet air inlet 2. The primary filter 4 is installed between the wet air inlet 2 and the first detachable limit tube 3. The primary filter 4 is made of stainless steel. An outer tube exhaust port 10 is opened on the right side of the lower end of the outer tube structure 1.

[0026] The inner tube structure 5 is arranged in the inner cavity of the outer tube structure 1, and the inner cavity on the left side of the outer tube structure 1 is installed with a first DC fan 11, and the inner cavity on the right side of the inner tube structure 5 is installed with a second DC fan 12. A dry air inlet 6 is opened on the right side of the inner tube structure 5, and a second detachable limiting tube 7 is installed on one side of the dry air inlet 6. A secondary filter 8 is installed between the dry air inlet 6 and the second detachable limiting tube 7. The secondary filter 8 is a dustproof net made of polyethylene material. An inner tube exhaust pipe 9 is opened on the left side of the upper end of the inner tube structure 5.

[0027] Among them: when it is needed, the first DC fan 11 in the outer tube structure 1 generates a negative pressure area by rotation, so that the moisture in the surrounding environment is sucked into the outer tube structure 1 under the action of the pressure difference. The tube body length can be processed and extended according to needs so that the moisture can be discharged from the designated area through the outer tube exhaust port 10. The second DC fan 12 of the inner tube structure 5 also uses the negative pressure principle to draw dry air from the dry air source in the external environment. The second DC fan 12 pushes the dry air to flow in the inner tube and transports it to the indoor environment through the inner tube exhaust pipe 9, thereby ensuring that the indoor environment will not be too humid and remain dry. The first-level filter 4 made of stainless steel metal in the wet air inlet 2 can withstand a certain impact force and effectively block larger foreign objects. At the same time, its mesh size can be customized between several millimeters and more than ten millimeters according to actual needs, which can prevent large foreign objects from entering the room. The first filter disc 4 is located between the wet air inlet 2 and the first detachable limiting tube 3, and the first detachable limiting tube 3 is designed to be detachable by threads, which makes it extremely convenient to clean and replace the first filter disc 4. When a large amount of impurities are retained on the surface of the first filter disc 4 after a period of use, resulting in increased ventilation resistance, the staff can easily disassemble the first detachable limiting tube 3, take out the first filter disc 4 for cleaning or replace it with a new one. The second filter disc 8 is installed between the dry air inlet 6 and the second detachable limiting tube 7 to filter the dry air entering the inner tube structure 5. The impurity particles are intercepted on one side of the net because their particle size is larger than the mesh hole, avoiding the entry of substances in the external environment. The second filter disc 8 can also be taken out for cleaning by disassembling the second detachable limiting tube 7.

[0028] Example 2

[0029] Based on Example 1, the solution in Example 1 is further detailed in combination with the following specific working methods. Figures 1 to 5 As shown, see the following description for details:

[0030] As a preferred embodiment, the wet air inlet 2 is engaged with the first detachable limiting tube 3 through a thread, and the first detachable limiting tube 3 engages with the wet air inlet 2 and abuts against one side of the first-stage filter 4; further, when the first detachable limiting tube 3 is tightly abutted against the first-stage filter 4, the first-stage filter 4 can be fixed. When the first-stage filter 4 needs to be cleaned or replaced, the staff only needs to rotate the first detachable limiting tube 3 in the opposite direction to remove it from the wet air inlet 2, and the first-stage filter 4 can be taken out after it loses the abutment.

[0031] As a preferred embodiment, the dry air inlet 6 is engaged with the second detachable limiting tube 7 through a thread, and the second detachable limiting tube 7 engages into the dry air inlet 6 and abuts against one side of the secondary filter 8; further, by aligning the second detachable limiting tube 7 with the dry air inlet 6 and rotating it, the secondary filter 8 can be fixed on one side of the dry air inlet 6, and it can be removed from the dry air inlet 6 by rotating the second detachable limiting tube 7 in the opposite direction.

[0032] As a preferred embodiment, the end of the inner tube structure 5 away from the first DC fan 11 passes through the center of the right side of the outer tube structure 1, and the end of the inner tube exhaust pipe 9 away from the inner tube structure 5 passes through the tube body of the outer tube structure 1; further, the way in which the inner tube structure 5 passes through the outer tube structure 1 further strengthens the physical isolation of dry and wet air, and the dry air flows in the inner tube structure 5 and is discharged through the inner tube exhaust pipe 9, and the wet air flows in the outer tube structure 1, and the two are isolated through the tube body.

[0033] The working process of the utility model is as follows: first, when working, the first DC fan 11 on the left side of the outer tube structure 1 is running, and negative pressure is generated at the wet air inlet 2. The outside wet air is sucked in under the action of the pressure difference. Then the wet air first passes through the primary filter 4 made of stainless steel metal material, whose structure can effectively intercept larger insect pests and mice in the wet air. Because the stainless steel material has high strength, corrosion resistance and is easy to clean, it can ensure stable operation and long-term effective filtration in a complex wet environment. When the first detachable limiting tube 3 is tightly abutted against the primary filter 4, the primary filter 4 can be fixed. When the primary filter 4 needs to be cleaned or replaced, the staff only needs to rotate the first detachable limiting tube 3 in the opposite direction to remove it from the wet air inlet 2. The primary filter 4 can be taken out after it loses its abutment.

[0034] The filtered wet air continues to be pushed by the first DC fan 11 in the outer tube structure 1, flows to the lower right along the pipeline, and is finally discharged from the outer tube exhaust port 10. At the same time, the second DC fan 12 on the right side of the inner tube structure 5 is started, so that a negative pressure is formed at the dry air inlet 6, and the dry air from the outside is sucked in. The dry air first passes through the secondary filter 8 made of polyethylene material. The dustproof net, with its fine mesh structure, can effectively block dust particles and other impurities in the dry air, providing purer dry air for the indoor environment. The second detachable limiting tube 7 is aligned with the dry air inlet 6 and rotated to fix the secondary filter 8 on one side of the dry air inlet 6. By rotating the second detachable limiting tube 7 in the opposite direction, it can be removed from the dry air inlet 6 for cleaning. The filtered dry air is driven by the second DC fan 12 and flows to the upper left in the inner tube structure 5, and then discharged through the inner tube exhaust pipe 9. The inner and outer tubes always maintain a good dry-wet separation effect. The above is the working principle of the ventilation duct with a dry-wet separation structure.

Claims

1. A ventilation pipe with a dry-wet separation structure, comprising an outer pipe structure (1), a primary filter sheet (4), an inner pipe structure (5) and a secondary filter sheet (8), characterized in that: A wet air inlet (2) is provided on the left side of the outer tube structure (1), a first detachable limiting tube (3) is installed on the left side of the wet air inlet (2), the first-stage filter (4) is installed between the wet air inlet (2) and the first detachable limiting tube (3), and an outer tube exhaust port (10) is provided on the right side of the lower end of the outer tube structure (1); The inner tube structure (5) is arranged in the inner cavity of the outer tube structure (1); a dry air inlet (6) is provided on the right side of the inner tube structure (5); a second detachable limiting tube (7) is installed on one side of the dry air inlet (6); the secondary filter (8) is installed between the dry air inlet (6) and the second detachable limiting tube (7); and an inner tube exhaust pipe (9) is provided on the left side of the upper end of the inner tube structure (5).

2. The ventilation pipe with a dry-wet separation structure according to claim 1, characterized in that: A first DC fan (11) is installed in the inner cavity on the left side of the outer tube structure (1), and a second DC fan (12) is installed in the inner cavity on the right side of the inner tube structure (5).

3. The ventilation pipe with a dry-wet separation structure according to claim 2, characterized in that: The wet air inlet (2) is engaged and connected with the first detachable limiting tube (3) via a thread; the first detachable limiting tube (3) engages with the wet air inlet (2) and abuts against one side of the first-stage filter (4).

4. The ventilation pipe with a dry-wet separation structure according to claim 1, characterized in that: The dry air inlet (6) is engaged and connected with the second detachable limiting tube (7) through a thread, and the second detachable limiting tube (7) engages with the dry air inlet (6) and abuts against one side of the secondary filter (8).

5. The ventilation pipe with a dry-wet separation structure according to claim 2, characterized in that: The end of the inner tube structure (5) away from the first DC fan (11) passes through the center of the right side of the outer tube structure (1), and the end of the inner tube exhaust pipe (9) away from the inner tube structure (5) passes through the tube body of the outer tube structure (1).

6. The ventilation pipe with a dry-wet separation structure according to claim 1, characterized in that: The primary filter (4) is made of stainless steel, and the secondary filter (8) is a dustproof net made of polyethylene.

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