A dust-proof clean air shower and its method

Abstract

This invention relates to the field of air shower technology, providing a dust-proof clean air shower and its method. The air shower includes an air shower and an installation plate mounted on its inner wall. The installation plate has an air intake area inside. A filter assembly is located on the rear side of the installation plate. The filter assembly includes a sealing unit, a filter cutting unit, and a cleaning unit. The sealing unit includes upper and lower double-layer baffles and sealing rollers rotatably mounted inside its two ends. The filter cutting unit includes rotating filter media and rotating belts at its upper and lower ends. The baffles abut against the rotating belts, and the sealing rollers abut against the installation plate and the rotating filter media. The upper and lower ends of the sealing rollers abut against the baffles. By setting the rotating filter media behind the air intake area, after the air shower has been running for a certain period, the clean surface is moved to the front for switching through rotation. When the dirty surface of the rotating filter media moves out of the filter chamber, the rotating filter media is obliquely blown from the inside to the outside through air nozzles. Combined with a negative pressure dust collection hood, the detached dust is collected, forming an online cleaning process.

Description

Technical Field

[0001] This invention relates to the field of air shower technology, and more specifically, to a dust-proof clean air shower and method. Background Technology

[0002] Air showers are entrance equipment for cleanrooms. They use high-speed clean airflow to blow on personnel or goods, stripping away and carrying away dust particles attached to surfaces through strong airflow. The air is then purified by filters to prevent contaminants from being brought into the clean area. They are widely used in industries such as electronics, pharmaceuticals, and food.

[0003] The filter in the air shower is located behind the air inlet inside the air shower room and is used to intercept particulate matter in the air. However, as the usage time increases or when there is a lot of dust being air-showered, the blocked dust accumulates on the surface of the filter material, forming dust accumulation, which can easily pollute the clean air and affect the subsequent air shower effect.

[0004] To address the aforementioned issues, this application proposes a dust-proof clean air shower room and method. Summary of the Invention

[0005] The purpose of this invention is to provide a dust-proof clean air shower room and method, which solves the problem of dust accumulation in air shower rooms affecting air quality in the prior art.

[0006] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0007] A dust-proof clean air shower includes an air shower and an installation plate installed on its inner wall, wherein the interior of the installation plate is provided with an air intake zone;

[0008] The rear side of the mounting plate is provided with a filter assembly, which includes a sealing unit, a filter cutting unit, and a cleaning unit;

[0009] The sealing unit includes upper and lower double-layer baffles and sealing rollers rotatably mounted inside both ends; the filter cutting unit includes a rotating filter material that rotates and rotating belts at its upper and lower ends; the baffles abut against the rotating belts; the sealing rollers abut against the mounting plate and the rotating filter material; and the upper and lower ends of the sealing rollers abut against the baffles.

[0010] The cleaning unit includes an air knife and a negative pressure dust collection hood. The air knife is located inside both ends of the rotating filter material, and the negative pressure dust collection hood is located outside both ends of the rotating filter material. The negative pressure dust collection hood is close to the sealing roller.

[0011] A method for using an air shower includes the following steps:

[0012] Step 1: When the filter media needs to be cleaned or replaced, control the rotation of the rotating filter media. The side of the rotating filter media closer to the air intake area is the dirty side, and the side farther away from the air intake area is the clean side.

[0013] Step 2: The frictional resistance formed by the sealing roller against the rotating filter media causes the sealing roller to rotate along with the rotating filter media, maintaining elastic contact between the sealing roller and the rear surface of the mounting plate, the surface of the rotating filter media, and between them, thus achieving dynamic sealing contact.

[0014] Step 3: The rotating filter media moves away from the air inlet area. When the dirty surface leaves the sealing roller, the air knife releases air force to form a blow from the inside out, causing the dust on the dirty surface to fall outward and enter the interior of the negative pressure dust collection hood until it is extracted by the negative pressure dust collection hood.

[0015] Step 4: After the dust is removed, the dirty surface is restored to a clean surface. Under the rotation of the rotating filter media, it moves to a side away from the air intake area and waits for the next set of working surfaces to be switched to use.

[0016] The beneficial effects of this invention are:

[0017] 1. By using a rotary filter media with a rotary structure instead of a traditional fixed plate filter, the filter surface can be switched by the rotary motion of the filter media after the air shower has been running for a certain period of time or number of times, which can effectively maintain the effective air shower operation for a long time.

[0018] 2. By installing air knives and negative pressure dust collection hoods inside and outside the two ends of the filter cutting unit, and using the oblique installation structure of the air nozzles, the rotating belt in the area where the air inlet is removed can be cleaned online. This allows the different areas of the rotating filter media to be used alternately, which helps to restore the air shower effect in time when it declines.

[0019] 3. By installing baffles on the outside of the air intake area and rotating sealing rollers at both ends, the sealing gaskets on the outer side of the sealing rollers constantly contact the rotating belt and generate a driven rotation, thereby achieving dynamic sealing and forming a closed filter chamber to prevent dust leakage. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall appearance and structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the internal structure of the air shower chamber of the present invention;

[0023] Figure 3This is an exploded view of the filter unit, sealing unit, and cleaning unit of the present invention;

[0024] Figure 4 This is a schematic diagram of the combined structure of the filter cutting unit, sealing unit, and cleaning unit of the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of the filter cutting unit of the present invention;

[0026] Figure 6 This is a schematic diagram of the combined structure of the sealing unit and the mounting plate of the present invention;

[0027] Figure 7 This is a schematic diagram of the internal structure and a partially enlarged view of the sealing unit of the present invention;

[0028] Figure 8 This is a schematic diagram of the cleaning unit structure of the present invention;

[0029] Figure 9 This is a schematic diagram of a cross-sectional structure of the cleaning unit of the present invention;

[0030] The attached diagram lists the components represented by each number as follows:

[0031] In the picture:

[0032] 1. Air shower room; 11. Mounting plate; 1101. Air intake area;

[0033] 2. Filter assembly; 21. Sealing unit; 22. Filter cutting unit; 23. Cleaning unit;

[0034] 211. Baffle; 2111. Support; 212. Sealing roller; 2121. Rotating rod; 2122. Sealing gasket;

[0035] 221. Rotary belt; 222. Rotary filter media; 223. Drive mechanism; 2231. Rotary shaft; 2232. Transmission base;

[0036] 231. Air knife; 2311. Air nozzle; 232. Negative pressure dust collection hood; 233. Adapter pipe. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] A dust-proof clean air shower and method are disclosed to address the dust accumulation problem that occurs in air showers after prolonged use or excessive dust exposure. The method involves installing a rotating belt 221 behind the air inlet zone 1101. Baffles 211 above and below the air inlet zone 1101 abut against the rotating belt 221. Sealing rollers 212, rotatably mounted at both ends of adjacent baffles 211, roll against the rotating filter media 222, thus forming a closed filtration chamber. This prevents dust accumulation in the air shower after a certain period of operation, or after exposure to large amounts of dust. After the dusty goods are removed, the clean surface is moved to the front by the rotation of the rotary filter material 222, ready for subsequent filtration. When the dirty surface of the rotary filter material 222 moves out of the filtration chamber, the rotary filter material 222 is blown obliquely from the inside to the outside through the nozzle 2311, and the detached dust is collected by the negative pressure dust collection hood 232, thus forming an online cleaning, so that the dirty surface is restored to a clean surface, ready for the next cycle. After this arrangement, a stable air shower effect can be restored in time, avoiding downtime for maintenance or replacement that affects the efficiency of use.

[0039] In some embodiments, the specific structure of the dust-proof clean air shower is as follows: Figure 1-9 As shown, it includes an air shower chamber 1, and mounting plates 11 are installed on the bottom of the two side walls inside the air shower chamber 1. The mounting plates 11 have densely distributed through holes inside, which are air intake zones 1101.

[0040] Please see Figure 3-4 A filter assembly 2 is provided behind the mounting plate 11. The filter assembly 2 includes a sealing unit 21, a filter cutting unit 22, and a cleaning unit 23.

[0041] The sealing unit 21 is installed on the rear side of the mounting plate 11, the filter cutting unit 22 is located behind the sealing unit 21, and the cleaning unit 23 is located between the sealing unit 21 and the filter cutting unit 22.

[0042] For details, please continue reading Figure 5 The filter cutting unit 22 includes a rotary belt 221, a rotary filter media 222, and a drive mechanism 223;

[0043] Among them, the rotary filter material 222 is a rotary filter screen structure, which adopts a ring-shaped jointless structure and is made of wear-resistant polyester fiber membrane. It has the characteristics of being washable and wear-resistant.

[0044] Furthermore, the rotating belt 221 is fixedly connected to the rotating filter material 222 and is located at the upper and lower ends of the rotating belt 221. It is a rotating belt structure and the inner surface is machined with teeth.

[0045] Furthermore, the drive mechanism 223 includes a rotating shaft 2231 and a transmission base 2232;

[0046] The rotating shaft 2231 has a stepped shaft structure, with a smooth rod structure in the middle section. Gear structures are machined on the outer sides of the upper and lower ends, which mesh with the teeth on the inner side of the rotating belt 221. Right-angle brackets are rotatably mounted on the upper and lower ends of the rotating shaft 2231, and one end of the right-angle bracket is fixedly connected to the rear side of the mounting plate 11 by bolts.

[0047] The transmission seat 2232 is fixedly installed at the lower end of the right-angle bracket below the rotating shaft 2231. A rotary transmission belt is installed inside it. The lower end of the rotating shaft 2231 extends downward into the interior of the transmission seat 2232 and meshes with the rotary transmission belt.

[0048] It should be noted that a rotary motor is installed at the upper or lower end of one of the right-angle brackets, and its output shaft is fixedly connected to the rotary shaft 2231 to drive the rotary shaft 2231 to rotate.

[0049] It is understandable that the internal meshing connection between the rotating shaft 2231 and the rotating belt 221 can drive the rotating filter material 222 to rotate, thus realizing the function of switching between the dirty surface and the clean surface.

[0050] For details, please continue reading Figure 6 and Figure 7 The sealing unit 21 includes a baffle 211 and a sealing roller 212;

[0051] Among them, the baffle 211 is fixedly installed above and below the air intake area 1101 on the rear side of the mounting plate 11. The left and right ends of the adjacent baffle 211 are each equipped with a support 2111 on the side that is far away from each other. The support 2111 has a hole structure inside and penetrates the baffle 211.

[0052] Furthermore, the sealing roller 212 includes a central rotating rod 2121 and an outer sealing pad 2122;

[0053] The upper and lower ends of the rotating rod 2121 are rotatably installed inside the support 2111. The sealing gasket 2122 is fixedly installed on the outer side of the body of the rotating rod 2121. The front and rear sides respectively abut against the rear surface of the mounting plate 11 and the outer surface of the rotating filter material 222. The upper and lower ends of the sealing gasket 2122 are protruding structures, which abut against the baffle 211 to form an elastic dynamic seal.

[0054] It should be noted that the sealing gasket 2122 is made of food-grade silicone or polyurethane rubber;

[0055] The outer side of the rotating belt 221 is covered with a soft pad made of food-grade silicone.

[0056] In addition, the side of the baffle 211 away from the mounting plate 11 abuts against the rotating belt 221 to form a dynamic seal;

[0057] It is understandable that the baffle 211, the sealing roller 212, the rotating belt 221, and the rotating filter media 222 form a closed frame structure for the filter chamber;

[0058] For details, please continue reading Figure 8 and Figure 9 The cleaning unit 23 includes an air knife 231 and a negative pressure dust collection hood 232, with two sets of air knife 231 and negative pressure dust collection hood 232 arranged in the left and right end areas;

[0059] Among them, the air knife 231 is installed inside the rotary filter material 222, and the negative pressure dust collection hood 232 is located outside the rotary filter material 222. Both the air knife 231 and the negative pressure dust collection hood 232 are located in the area between the rotary end of the rotary filter material 222 and the sealing roller 212, and the upper and lower ends of both are fixedly connected to the mounting plate 11 by bolts.

[0060] Furthermore, an air nozzle 2311 is installed on one side of the air knife 231, and the air nozzle 2311 is angled at 15-30° toward the rotating filter media 222;

[0061] Furthermore, an adapter pipe 233 is installed at the upper end of the adjacent air knife 231, a branch pipe is installed above the middle of the adapter pipe 233, and a solenoid valve is installed on one side of the branch pipe. Similarly, an adapter pipe 233 and a solenoid valve are also installed above the adjacent negative pressure dust collection hood 232.

[0062] It should be noted that the branch pipe corresponding to the air knife 231 is used to connect to the air outlet pipe of the air shower room 1, and is used to draw out the blowing air from the air nozzle 2311 to clean the rotary filter material 222.

[0063] The branch pipe corresponding to the negative pressure dust collection hood 232 is used to connect to the exhaust fan outside the air shower room 1, and is used to receive the dust falling off the surface of the rotary filter material 222 in real time through the negative pressure dust collection hood 232.

[0064] Understandably, the air knife 231 and the negative pressure dust collection hood 232 start working at the same time as the rotary filter media 222 rotates, and can clean the dirty surface moving outward as soon as the rotary filter media 222 switches working surfaces, thus achieving the effect of online cleaning.

[0065] Optionally, to further improve the ease of use of the dust prevention mechanism, a wind pressure sensor and a signal transmitter are installed in the middle of the rotary filter media 222, and a signal receiver is provided for the rotary motor. The wind pressure sensor is used to monitor the wind speed after the rotary filter media 222 filters the air. When the wind speed is less than a predetermined value, it means that dust has accumulated on the rotary filter media 222. At this time, a signal can be sent to control the rotary motor to drive the rotary filter media 222 to rotate and switch the working surface.

[0066] Some publicly available information describes the specific usage methods for dust-proof cleanroom air showers as follows:

[0067] S1. After running in the air shower room 1 for a certain period of time, dust accumulates on the surface of the rotary filter material 222. At this time, the rotary motor is started to drive the rotary shaft 2231 to rotate. The rotary shaft 2231 is engaged with the rotary belt 221 to drive the rotary filter material 222 to rotate, so as to switch the filter working surface.

[0068] S2. When the rotary filter material 222 rotates, the sealing roller 212 that is in contact with the outer surface of the rotary filter material 222 is driven to rotate, thereby achieving low-friction dynamic sealing.

[0069] S3. When the dirty surface of the rotary filter material 222 moves away from the rotating shaft 2231, the air nozzle 2311 installed obliquely on the side of the air knife 231 blows the air from the inside to the outside of the rotary filter material 222, causing the dust accumulated on the outer surface of the rotary filter material 222 to fall off.

[0070] S4. The detached dust enters the opening area covered by the negative pressure dust collection hood 232, and the dust is discharged to the outside of the air shower room 1 by the negative pressure suction inside the negative pressure dust collection hood 232.

[0071] S5. As the rotary filter media 222 rotates, the dirty surface is continuously cleaned until the clean surface covers the area behind 1011. Then the rotating motor stops, and the switching is completed.

[0072] In the description of this specification, references to terms such as "an embodiment," "example," and "specific example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0073] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A dust-proof clean air shower, characterized in that: It includes an air shower (1) and an installation plate (11) installed on its inner wall, wherein the interior of the installation plate (11) is provided with an air intake zone (1101). The mounting plate (11) has a filter assembly (2) on its rear side, which includes a sealing unit (21), a filter cutting unit (22), and a cleaning unit (23). The sealing unit (21) includes upper and lower double-layer baffles (211) and sealing rollers (212) rotatably mounted inside both ends. The filter cutting unit (22) includes a rotating filter material (222) with rotating motion and rotating belts (221) at its upper and lower ends. The baffles (211) abut against the rotating belts (221), and the sealing rollers (212) abut against the mounting plate (11) and the rotating filter material (222). The upper and lower ends of the sealing rollers (212) abut against the baffles (211). The cleaning unit (23) includes an air knife (231) and a negative pressure dust collection hood (232). The air knife (231) is located inside both ends of the rotary filter material (222), and the negative pressure dust collection hood (232) is located outside both ends of the rotary filter material (222). The negative pressure dust collection hood (232) is close to the sealing roller (212).

2. The dust-proof clean air shower room according to claim 1, characterized in that: The sealing roller (212) includes a central rotating rod (2121) and an outer sealing pad (2122), the sealing pad (2122) covering the outer side and the upper and lower ends of the rotating rod (2121).

3. The dust-proof clean air shower room according to claim 2, characterized in that: The baffle (211) is fixedly provided with a support (2111) on the side away from the sealing roller (212) at both ends, and the upper and lower ends of the rotating rod (2121) are rotatably installed inside the support (2111).

4. The dust-proof clean air shower room according to claim 1, characterized in that: The two ends of the rotating belt (221) are internally meshed with a rotating shaft (2231), and the rotating shaft (2231) is fixedly connected to the air shower (1) through right-angle plates that are rotatably installed at the upper and lower ends.

5. The dust-proof clean air shower room according to claim 4, characterized in that: A transmission seat (2232) is fixed at the lower end of the right-angle plate located below the rotating shaft (2231). The transmission seat (2232) connects the left and right adjacent right-angle plates. A rotating transmission belt is installed inside the transmission seat (2232).

6. The dust-proof clean air shower room according to claim 5, characterized in that: The lower end of the rotating shaft (2231) extends into the interior of the transmission seat (2232) and engages with the rotating transmission belt.

7. The dust-proof clean air shower room according to claim 1, characterized in that: The rotating shaft (2231) and the transmission seat (2232) are provided in two sets at both ends of the rotating filter material (222). The upper end of the adjacent air knife (231) and the adjacent negative pressure dust collection hood (232) are provided with a transfer pipe (233). The middle upper end of the transfer pipe (233) is equipped with (2331).

8. The dust-proof clean air shower room according to claim 7, characterized in that: A nozzle (2311) is installed on one side of the air knife (231), and the opening of the nozzle (2311) faces the opening of the negative pressure dust collection hood (232).

9. The dust-proof clean air shower room according to claim 8, characterized in that: The nozzle (2311) is installed at an angle, and the included angle between the nozzle (2311) and the rotating filter material (222) is 15-30°.

10. A method of using an air shower, applied to the dust-proof clean air shower as described in any one of claims 1-9, characterized in that, Includes the following steps: Step 1: When the filter material needs to be cleaned or replaced, control the rotation of the rotating filter material (222). The side of the rotating filter material (222) closer to the air inlet area (1101) is the dirty side, and the side away from the air inlet area (1101) is the clean side. Step 2: The frictional resistance formed by the sealing roller (212) against the rotating filter material (222) causes the sealing roller (212) to rotate along with the rotating filter material (222) during its rotational motion, maintaining elastic contact between the sealing roller (212) and the rear surface of the mounting plate (11), the surface of the rotating filter material (222), and (111), thus achieving dynamic sealing contact; Step 3: The rotating filter material (222) moves in a rotating motion. The dirty surface gradually moves away from the air inlet area (1101). When the dirty surface is separated from the sealing roller (212), the air force is released by the air knife (231) to form a blow from the inside to the outside, so that the dust on the dirty surface falls outward and enters the interior of the negative pressure dust collection hood (232) until it is extracted by the negative pressure dust collection hood (232). Step 4: After the dust is removed, the dirty surface is restored to a clean surface. Under the rotation of the rotating filter material (222), it moves to a side away from the air intake area (1101) and waits for the next set of working surfaces to be switched to use.

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