Fresh air pipe facilitating maintenance of filtering device

Abstract

The utility model discloses a fresh air pipe facilitating maintenance of a filtering device, which comprises a front fresh air pipe, the other end of the front fresh air pipe is connected with a filtering assembly, the filtering assembly is further connected with a rear fresh air pipe, and the rear fresh air pipe is arranged indoors; the filter assembly comprises a short air pipe, rectangular flanges are arranged on the two sides of the short air pipe respectively, a dismounting and mounting opening is further formed in one side of the short air pipe, an inner filter structure capable of being longitudinally dismounted and mounted is arranged in the dismounting and mounting opening and comprises an inner frame, the inner frame is movably arranged in the short air pipe, and a side plate is arranged at the bottom of the inner frame. Sliding rails are arranged on the inner frame, sliding blocks are further arranged on the two sides of the inner frame, the sliding blocks are arranged on the sliding rails in a sliding mode, positioning structures for the sliding blocks are arranged on the sliding rails, and locking structures for the side plates are further arranged on one sides of the short air pipes. And the inner frame can be taken out, so that the disassembly is convenient.

Description

Technical Field

[0001] This utility model relates to the field of fresh air duct technology, and in particular to a fresh air duct that is easy to maintain for the filter device. Background Technology

[0002] Cleanrooms are locations with high requirements for indoor air quality. To meet these cleanliness requirements, outdoor fresh air needs to undergo multi-stage filtration before being introduced into the room. The coarse filter installed at the front end of the fresh air duct filters out larger particles such as dust from the outdoor air. This is an effective measure to reduce the amount of pollutants deposited in the fresh air duct, reduce the purification pressure on the terminal high-efficiency filter, and reduce the fan load. Therefore, the filtration capacity and ventilation volume of the coarse filter are crucial to the fresh air system. Consequently, the coarse filter at the front end of the fresh air duct needs to be disassembled, cleaned, or its filter unit replaced regularly to prevent it from losing its filtration capacity due to continuous accumulation and blockage of dust, which would increase air resistance and consequently increase operating costs.

[0003] Currently, the coarse filtration devices for fresh air ducts generally use metal mesh as the main filtration unit, which is directly installed inside the louvers at the front end of the duct. Since the front end of the fresh air duct passes vertically through the cleanroom wall, and both the duct front end and the louvers are located on the outside of the wall and at a certain height from the ground, disassembling, cleaning, or replacing the filter unit requires removing the louvers outdoors first, and then disassembling the filter unit. This process is overly cumbersome, labor-intensive, time-consuming, and carries certain risks, especially for fresh air ducts in cleanrooms with high walls. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a fresh air duct that is easy to maintain. This solves the problem that the front port and louvers of the existing fresh air duct are located on the outside of the wall and at a certain height from the ground. Therefore, when the filter needs to be disassembled for cleaning or replacement, the louvers must be removed outdoors first, and then the filter unit must be disassembled. This operation process is too cumbersome, labor-intensive, time-consuming, and has a certain degree of danger.

[0005] To solve the above-mentioned technical problems, this utility model provides: a fresh air duct for easy maintenance of a filter device, including a front fresh air duct connected to a wall, the other end of the front fresh air duct connected to a filter assembly, the filter assembly also connected to a rear fresh air duct, and the rear fresh air duct placed indoors; the filter assembly includes a short duct, rectangular flanges are respectively provided on both sides of the short duct, and a disassembly port is also provided on one side of the short duct, an internal filter structure that can be disassembled longitudinally is provided in the disassembly port, the internal filter structure includes an inner frame, the inner frame is movably disposed in the short duct, a side plate is provided at the bottom of the inner frame, sliders are also provided on both sides of the inner frame, the sliders are slidably disposed on slide rails, the slide rails are disposed on both inner surfaces of the short duct, wherein the slide rails are provided with a positioning structure for the sliders, and a locking structure for the side plate is also provided on one side of the short duct.

[0006] Preferably, a metal filter screen is provided inside the inner frame, and the side plate is used to seal the disassembly port.

[0007] Preferably, a louver is provided on one side of the front fresh air duct to guide the airflow.

[0008] Preferably, the rectangular flanges are all connected to the front and rear fresh air ducts by locking bolts, which can fix the short air duct to the front and rear fresh air ducts.

[0009] Preferably, the positioning structure includes an arc-shaped positioning pin, which is movably disposed in a groove. The groove is disposed on one side of the slide rail surface, and a spring is also disposed on one side of the groove. One end of the spring is connected to the arc-shaped positioning pin, which can reset and move the arc-shaped positioning pin.

[0010] Preferably, one end of the arc-shaped positioning pin is engaged with the arc-shaped positioning groove, which is disposed on one side surface of the slider, so as to engage and fix the arc-shaped positioning pin and position the slider.

[0011] Preferably, the locking structure includes an adjusting rod, which is rotatably mounted on the short air ducts on both sides of the disassembly / assembly port via a connecting shaft. Locking blocks are provided on both sides of the adjusting rod to fix the side plate after installation.

[0012] Preferably, the adjusting rod corresponds to the positioning hole, which is provided on both sides of the side plate. A side hole is also provided on one side of the positioning hole, and the side hole corresponds to the locking block, which facilitates the positioning and installation of the adjusting rod and the locking block.

[0013] The beneficial effects of this utility model are:

[0014] After prolonged use, this invention allows the inner frame to be removed from the short duct and the metal filter screen inside the inner frame to be cleaned. This changes the original disassembly method, requiring only the removal of the inner frame, making disassembly convenient and safe. After cleaning, the inner frame can be quickly positioned and locked, making installation equally convenient. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a front half-sectional view of the filter assembly in this utility model;

[0017] Figure 3 This is a right half-sectional view of the filter component in this utility model.

[0018] Figure 4 for Figure 3 A partially enlarged structural diagram of section A in the middle;

[0019] Figure 5 for Figure 3 A magnified schematic diagram of a portion of section B in the middle;

[0020] Figure 6 This is a schematic diagram of the locking structure in this utility model when it is separated from the side plate;

[0021] Figure 7 This is a schematic diagram of the locking structure and the side plate in this utility model when they are fixed together.

[0022] In the diagram: 1. Front fresh air duct, 2. Filter assembly, 3. Rear fresh air duct, 4. Louver, 201. Rectangular flange, 202. Short air duct, 203. Slider, 204. Metal filter screen, 205. Side plate, 206. Disassembly port, 207. Inner frame, 208. Slide rail, 209. Handle, 210. Arc-shaped positioning groove, 211. Arc-shaped positioning pin, 212. Spring, 213. Groove, 214. Adjusting rod, 215. Locking block, 216. Connecting shaft, 217. Positioning hole, 218. Side hole. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. All directional indicators (such as up, down, left, right, front, back, etc.) in the present utility model are only used to explain the relative positional relationship and movement of each component in a certain posture (as shown in the accompanying drawings). If the specific posture changes, the directional indicator will also change accordingly.

[0024] Please see Figure 1 as well as Figure 2 A fresh air duct for easy maintenance of the filter device includes a front fresh air duct 1 connected to a wall, with the other end of the front fresh air duct 1 connected to a filter assembly 2. The filter assembly 2 is also connected to a rear fresh air duct 3, which is placed indoors. The filter assembly 2 includes a short duct 202 with rectangular flanges 201 welded to both sides. A disassembly port 206 is also provided on one side of the short duct 202. An internal filter structure that can be disassembled longitudinally is provided inside the disassembly port 206. The internal filter structure includes an inner frame 207 movably disposed inside the short duct 202. A side plate 205 is welded to the bottom of the inner frame 207. Slider blocks 203 are fixedly disposed on both sides of the inner frame 207 and slide on slide rails 208. The slide rails 208 are fixedly disposed on both sides of the inner surface of the short duct 202. A metal filter screen 204 is fixedly disposed inside the inner frame 207. The side plate 205 is used to seal the disassembly port 206 to prevent airflow leakage.

[0025] First, the rectangular flanges 201 at both ends of the short air duct 202 are connected to the front fresh air duct 1 and the rear fresh air duct 3, respectively. When the airflow enters through the front fresh air duct 1, the airflow passes through the metal filter screen 204 on the inner frame 207. The metal filter screen 204 filters the airflow. When the metal filter screen 204 needs to be cleaned, the side plate 205 is pulled out. The side plate 205 drives the inner frame 207 to move in the disassembly port 206. The inner frame 207 drives the slider 203 to move along the slide rail 208. At the same time, the inner frame 207 drives the metal filter screen 204 to move. After the inner frame 207 is completely removed from the disassembly port 206, the metal filter screen 204 is cleaned. After cleaning, the inner frame 207 is inserted from the disassembly port 206, and the slider 203 is aligned with the slide rail 208. The inner frame 207 is moved into the short air duct 202, and then the side plate 205 is fixed by the locking structure, thus completing the installation of the inner frame 207 and the short air duct 202.

[0026] Furthermore, a louver 4 is installed on one side of the front fresh air duct 1 to guide the airflow.

[0027] Furthermore, the rectangular flanges 201 are all connected to the front fresh air duct 1 and the rear fresh air duct 3 by locking bolts, which can fix the short air duct 202 to the front fresh air duct 1 and the rear fresh air duct 3.

[0028] Furthermore, a handle 209 is provided on the side panel 205, which allows the side panel 205 to be pulled out quickly, making it easier to move the inner frame 207 from the disassembly port 206.

[0029] Please see Figure 3 as well as Figure 4The slide rail 208 is provided with a positioning structure for the slider 203. The positioning structure includes an arc-shaped positioning pin 211, which is movably disposed in a groove 213. The groove 213 is disposed on one side surface of the slide rail 208. A spring 212 is also disposed on one side of the groove 213. One end of the spring 212 is connected to the arc-shaped positioning pin 211 and can reset and move the arc-shaped positioning pin 211. One end of the arc-shaped positioning pin 211 is engaged with an arc-shaped positioning groove 210, which is disposed on one side surface of the slider 203 and can engage and fix the arc-shaped positioning pin 211 and position the slider 203.

[0030] During the installation of the inner frame 207, the inner frame 207 drives the slider 203 to move along the slide rail 208. When the slider 203 moves to the position of the arc-shaped positioning pin 211, the slider 203 squeezes the arc-shaped positioning pin 211. The arc-shaped positioning pin 211 moves in the groove 213 and compresses the spring 212. When the inner frame 207 is fully inserted into the short air duct 202, the spring 212, under the action of elasticity, drives the arc-shaped positioning pin 211 to reset and move, and makes the arc-shaped positioning pin 211 snap into the arc-shaped positioning groove 210, thereby positioning the inner frame 207.

[0031] Please see Figures 5-7 Two sets of locking structures for the side plate 205 are also provided on one side of the short duct 202. The locking structure includes an adjusting rod 214, which is rotatably mounted on the short duct 202 on both sides of the disassembly port 206 via a connecting shaft 216. Locking blocks 215 are provided on both sides of the adjusting rod 214 to fix the side plate 205 after installation. The adjusting rod 214 corresponds to the positioning hole 217, which is provided on both sides of the side plate 205. A side hole 218 is also provided on one side of the positioning hole 217, which corresponds to the locking block 215, to facilitate the positioning and installation of the adjusting rod 214 and the locking block 215.

[0032] When the inner frame 207 is installed, the locking block 215 and the side hole 218 are arranged horizontally. During the installation of the inner frame 207, the adjusting rod 214 and the locking block 215 pass through the positioning hole 217 and the side hole 218 respectively. After the arc-shaped positioning pin 211 positions the inner frame 207, the adjusting rod 214 is rotated. The adjusting rod 214 drives the locking block 215 to rotate and makes the locking block 215 fit against the bottom surface of the side plate 205. The side plate 205 can be locked and fixed by the locking block 215. When disassembling, the locking block 215 is rotated to be parallel to the side hole 218 and the side plate 205 is pulled out.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fresh air duct facilitating maintenance of a filter device, characterized in that: The utility model provides a new air pipe, including front new air pipe (1), front new air pipe (1) is connected with wall body, one end of front new air pipe (1) is connected with filter assembly (2), filter assembly (2) is also connected with rear new air pipe (3), and rear new air pipe (3) is placed in indoor, filter assembly (2) includes short air pipe (202), rectangle flange (201) is arranged respectively at both sides of short air pipe (202), one side of short air pipe (202) is also provided with dismounting opening (206), longitudinally detachable inner filter structure is arranged in dismounting opening (206), and the inner filter structure includes inner frame (207), inner frame (207) is movably arranged in short air pipe (202), the bottom of inner frame (207) is provided with side plate (205), and the both sides of inner frame (207) are also provided with sliding block (203), sliding block (203) is slidably arranged on slide rail (208), and slide rail (208) is arranged on both sides of the surface of short air pipe (202), wherein positioning structure for the positioning of sliding block (203) is arranged on slide rail (208), and one side of short air pipe (202) is also provided with locking structure for the locking of side plate (205).

2. The fresh air duct for facilitating maintenance of a filter device according to claim 1, characterized in that: Metal filter screen (204) is arranged in inner frame (207), and side plate (205) is used for sealing dismounting opening (206).

3. The fresh air duct for facilitating maintenance of a filter device according to claim 1, characterized in that: Louver (4) is arranged in one side of front new air pipe (1).

4. The fresh air duct for facilitating maintenance of a filter device according to claim 1, characterized in that: Rectangle flange (201) is connected with front new air pipe (1) and rear new air pipe (3) through locking bolt.

5. The fresh air duct for facilitating maintenance of a filter device according to claim 1, characterized in that: The positioning structure includes arc-shaped positioning pin (211), arc-shaped positioning pin (211) is movably arranged in recess (213), recess (213) is arranged on one side surface of slide rail (208), one side of recess (213) is also provided with spring (212), and one end of spring (212) is connected with arc-shaped positioning pin (211).

6. A fresh air duct facilitating maintenance of a filter device according to claim 5, characterized in that: One end of arc-shaped positioning pin (211) is clamped with arc-shaped positioning groove (210), and arc-shaped positioning groove (210) is arranged on one side surface in sliding block (203).

7. The fresh air duct for facilitating maintenance of a filter device according to claim 1, characterized in that: The locking structure includes adjusting rod (214), adjusting rod (214) is rotatably arranged on short air pipe (202) on both sides of dismounting opening (206) through link shaft (216), and locking block (215) is arranged on both sides of adjusting rod (214).

8. A fresh air duct facilitating maintenance of a filter device according to claim 7, characterized in that: Adjusting rod (214) corresponds with positioning hole (217), positioning hole (217) is arranged on both sides of side plate (205), one side of positioning hole (217) is also provided with side hole (218), and side hole (218) corresponds with locking block (215).

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