Controlled environment air purification device

Abstract

The invention discloses a controlled environment air purification device which comprises a dust collection unit used for adsorbing and temporarily storing dust in a controlled environment area; the filtering unit comprises a dust filtering assembly arranged in the dust suction unit and used for filtering dust sucked by the dust suction unit, and a cleaning assembly rotationally arranged on the outer side of the dust filtering assembly and used for automatically cleaning dust gathered on the outer surface of the dust filtering assembly. The dust collection unit is aligned to the position where dust needs to be collected, the dust filtering assembly sucks air carrying dust into the dust collection unit and filters the air, so that the dust in the air is filtered out, and when the dust filtering assembly works, the cleaning assembly continuously scrapes along the outer side of the dust filtering assembly, so that the dust gathered on the outer side of the dust filtering assembly is continuously scraped away, and the dust collection efficiency is improved. The situation that the negative pressure adsorption force of the dust filtering assembly on dust is reduced due to the fact that much dust is accumulated on the outer side of the dust filtering assembly is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of air purification, and particularly to an air purification device for a controlled environment. Background Art

[0002] A controlled environment refers to a closed or semi-closed space with strict requirements for parameters such as air cleanliness, temperature and humidity, pressure, and microbial content. For example: medical places, industrial scenarios, scientific research laboratories, etc. Among them, the dust-free standard is a key consideration for a controlled environment. In order to make the controlled environment dust-free, an air purification device with a dust suction function is usually equipped in the controlled environment area;

[0003] The existing air purification devices usually use the negative pressure adsorption method for dust suction. After adsorbing the dust into the air purification device, the adsorbed air is filtered through a filter cover. However, since the outer surface of the filter cover does not have an automatic dust cleaning function, the filter holes of the filter cover are gradually accumulated with dust, resulting in a decrease in the negative pressure of the filter cover for dust, and the ability to adsorb dust is greatly reduced. It is necessary to frequently disassemble the air purification device to clean the dust on the surface of the filter cover, reducing the dust removal efficiency.

[0004] The above content is only used to assist in understanding the technical solution of the present invention, and does not represent an admission that the above content is the closest prior art. Summary of the Invention

[0005] The purpose of the present invention is to provide an air purification device for a controlled environment, so as to solve the problems in the above background art that the filter cover inside the existing air purification device does not have an automatic cleaning function, the filter cover will be gradually accumulated with dust during operation, the negative pressure adsorption force for dust gradually decreases, the dust removal effect is poor, and it is necessary to frequently disassemble the air purification device for cleaning, reducing the dust removal efficiency.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] An air purification device for a controlled environment, comprising:

[0008] A dust suction unit for adsorbing and temporarily storing the dust in the controlled environment area;

[0009] A filtering unit, including a dust filtering component disposed inside the dust suction unit for filtering the dust inhaled by the dust suction unit, and a cleaning component rotatably disposed outside the dust filtering component for automatically cleaning the dust accumulated on the outer surface of the dust filtering component.

[0010] Further, the dust suction unit further includes:

[0011] A receiving barrel for receiving the inhaled dust. A dust collecting plate is fixedly connected to the lower end of the receiving barrel, and a bracket for supporting the receiving barrel is fixedly connected to the lower end of the dust collecting plate. The receiving barrel is in the shape of an inverted frustum of a cone;

[0012] A dust suction pipe is connected to the outside of the receiving barrel for sucking dust into the receiving barrel;

[0013] A dust suction port is connected to one end of the dust suction pipe opposite to the receiving barrel for adjusting the dust suction position.

[0014] Further, the dust filtering assembly includes:

[0015] A filter cover is arranged inside the receiving barrel for filtering the air inhaled by the dust suction pipe;

[0016] A closing cover is fixedly connected to the upper end of the filter cover and placed at the upper opening of the receiving barrel for closing the upper opening of the receiving barrel;

[0017] A negative pressure mechanism is arranged in the inner area of the filter cover for providing negative pressure to the filter cover.

[0018] Further, the negative pressure mechanism includes:

[0019] An air inlet section is arranged inside the filter cover and is coaxial with the filter cover. A closing ring is fixedly sleeved on the lower part of the outer side of the air inlet section for closing the gap between the air inlet section and the bottom of the filter cover;

[0020] A converging section is fixedly connected to the lower end of the air inlet section. The inner diameter of the converging section gradually decreases from top to bottom for accelerating the air flow rate;

[0021] An air extraction section is fixedly connected to the lower end of the converging section. A fan is arranged inside the air extraction section for providing negative pressure to the air inlet section.

[0022] Further, a plurality of groups of air inlets are arranged at equal angles on the outer side of the upper part of the air inlet section for providing multiple negative pressure adsorption points to the filter cover.

[0023] Further, the cleaning assembly includes:

[0024] A fixing ring is fixedly sleeved on the outer side of the filter cover near the bottom;

[0025] An annular gear is rotatably sleeved on the outer side of the filter cover and placed above the fixing ring. An extension ring is fixedly connected to the middle of the upper end of the annular gear;

[0026] A dust scraping rod is arranged in multiple groups at equal angles on the upper end of the annular gear and inside the extension ring for scraping off the dust accumulated on the outer side of the filter cover;

[0027] A limiting ring, fixedly connected to the upper ends of multiple groups of the dust scraping rods, is used to cooperate with the annular gear to limit the dust scraping rods;

[0028] A driving motor is installed at the lower end of the fixed ring. The upper end of the driving shaft of the driving motor is fixedly connected with a driving gear that meshes with the annular gear;

[0029] An isolation mechanism is arranged above the annular gear and is used to isolate dust from the annular gear.

[0030] Furthermore, the isolation mechanism includes:

[0031] An isolation cover, fixedly connected to the upper end of the fixed ring and located outside the driving gear and the annular gear;

[0032] A retaining ring, fixedly connected to the lower end of the isolation cover and located between the extension ring and the dust scraping rods. The lower end of the retaining ring is close to the upper end of the annular gear and is used to cooperate with the isolation cover and the extension ring to isolate dust from the driving gear and the annular gear.

[0033] Compared with the prior art, the beneficial effects of the present invention are:

[0034] 1. In the present invention, by aligning the dust suction unit with the position where dust needs to be sucked, the dust filtering component sucks the air carrying dust into the dust suction unit and filters it, so that the dust in the air is removed. While the dust filtering component is working, the cleaning component continuously scrapes along the outside of the dust filtering component, so that the dust accumulated on the outside of the dust filtering component is continuously scraped away, avoiding the reduction of the negative pressure adsorption force of the dust filtering component on dust due to the large amount of dust accumulated on the outside of the dust filtering component. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0036] Figure 2 is a schematic diagram of the internal structure of the filtering unit of the present invention;

[0037] Figure 3 is a diagram showing the cooperation relationship between the air inlet section and the filtering cover of the present invention;

[0038] Figure 4 is a diagram showing the cooperation relationship between the isolation cover and the annular gear of the present invention;

[0039] Figure 5 is a schematic diagram of the dust scraping rod scraping the filtering cover of the present invention;

[0040] Figure 6 is a diagram showing the cooperation relationship between the extension ring and the dust scraping rod of the present invention;

[0041] Figure 7 is a diagram showing the distribution state of the air inlets on the outside of the air inlet section of the present invention.

[0042] Reference numerals: 1, dust suction unit; 11, receiving barrel; 111, dust collection plate; 12, bracket; 13, dust suction pipe; 14, dust suction port; 2, filtering unit; 21, dust filtering assembly; 211, filter cover; 212, closing cover; 213, negative pressure mechanism; 2131, converging section; 2132, air extraction section; 2133, air inlet section; 2134, closing ring; 2135, air inlet; 22, cleaning assembly; 221, fixing ring; 222, annular gear; 2221, extending ring; 223, dust scraping rod; 224, limiting ring; 225, isolation mechanism; 2251, isolation cover; 2252, retaining ring; 226, drive motor; 227, drive gear. Detailed implementation manners

[0043] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0044] Please refer to Figure 1-7 , the present invention provides a technical solution:

[0045] A controlled environment air purification device, comprising:

[0046] A dust suction unit 1 for adsorbing and temporarily storing dust in a controlled environment area;

[0047] A filtering unit 2, including a dust filtering assembly 21 disposed inside the dust suction unit 1 for filtering the dust sucked by the dust suction unit 1, and a cleaning assembly 22 rotatably disposed outside the dust filtering assembly 21 for automatically cleaning the dust accumulated on the outer surface of the dust filtering assembly 21.

[0048] It should be noted that when using this air purification device to suck dust in a controlled environment area, by aligning the dust suction unit 1 with the position where dust needs to be sucked, the dust filtering assembly 21 sucks the air carrying dust into the dust suction unit 1 and filters it, so that the dust in the air is filtered out. While the dust filtering assembly 21 is working, the cleaning assembly 22 continuously scrapes along the outside of the dust filtering assembly 21, so that the dust accumulated on the outside of the dust filtering assembly 21 is continuously scraped off, avoiding the reduction of the negative pressure adsorption force of the dust filtering assembly 21 on the dust due to the large amount of dust accumulated on the outside of the dust filtering assembly 21.

[0049] As an improvement, as Figure 1 shown, the dust suction unit 1 further includes:

[0050] A dust holding bucket 11 for holding the inhaled dust. A dust collecting plate 111 is fixedly connected to the lower end of the dust holding bucket 11, and a bracket 12 for supporting the dust holding bucket 11 is fixedly connected to the lower end of the dust collecting plate 111. The dust holding bucket 11 is in an inverted frustum shape;

[0051] A dust suction pipe 13 is connected to the outside of the dust holding bucket 11 for sucking dust into the dust holding bucket 11;

[0052] A dust suction port 14 is connected to one end of the dust suction pipe 13 opposite to the dust holding bucket 11 for adjusting the dust suction position.

[0053] Furthermore, as Figures 2-3 shown, the dust filtering assembly 21 includes:

[0054] A filter cover 211 is arranged inside the dust holding bucket 11 for filtering the air inhaled by the dust suction pipe 13;

[0055] A closing cover 212 is fixedly connected to the upper end of the filter cover 211 and placed at the upper opening of the dust holding bucket 11 for closing the upper opening of the dust holding bucket 11;

[0056] A negative pressure mechanism 213 is arranged in the inner area of the filter cover 211 for providing negative pressure to the filter cover 211.

[0057] Even further, as Figures 2-5 shown, the negative pressure mechanism 213 includes:

[0058] An air inlet section 2133 is arranged inside the filter cover 211 and is coaxial with the filter cover 211. A closing ring 2134 is fixedly sleeved on the lower part of the outer side of the air inlet section 2133 for closing the gap between the air inlet section 2133 and the bottom of the filter cover 211;

[0059] A converging section 2131 is fixedly connected to the lower end of the air inlet section 2133. The inner diameter of the converging section 2131 gradually decreases from top to bottom for accelerating the air flow rate;

[0060] An air extraction section 2132 is fixedly connected to the lower end of the converging section 2131. A fan is arranged inside the air extraction section 2132 for providing negative pressure to the air inlet section 2133.

[0061] Among them, as Figure 4 , Figure 7 shown, a plurality of groups of air inlets 2135 are arranged at equal angles on the outer side of the upper part of the air inlet section 2133 for providing multiple negative pressure adsorption points to the filter cover 211.

[0062] As an improvement, as Figures 2-7 shown, the cleaning assembly 22 includes:

[0063] The fixing ring 221 is fixedly sleeved on the outer side of the filter cover 211 near the bottom;

[0064] The annular gear 222 is rotatably sleeved on the outer side of the filter cover 211 and is placed at the upper end of the fixing ring 221. The middle of the upper end of the annular gear 222 is fixedly connected with an extension ring 2221;

[0065] The dust scraping rod 223 is provided with multiple groups at equal angles on the upper end of the annular gear 222 and inside the extension ring 2221, and is used for scraping off the dust accumulated on the outer side of the filter cover 211;

[0066] The limiting ring 224 is fixedly connected to the upper ends of multiple groups of the dust scraping rods 223 and is used for cooperating with the annular gear 222 to limit the dust scraping rods 223;

[0067] The driving motor 226 is installed at the lower end of the fixing ring 221. The upper end of the driving shaft of the driving motor 226 is fixedly connected with a driving gear 227 meshing with the annular gear 222;

[0068] The isolation mechanism 225 is arranged above the annular gear 222 and is used for isolating dust from the annular gear 222.

[0069] Furthermore, as Figures 3-5 shown, the isolation mechanism 225 includes:

[0070] The isolation cover 2251 is fixedly connected to the upper end of the fixing ring 221 and is located outside the driving gear 227 and the annular gear 222;

[0071] The retaining ring 2252 is fixedly connected to the lower end of the isolation cover 2251 and is located between the extension ring 2221 and the dust scraping rod 223. The lower end of the retaining ring 2252 is close to the upper end of the annular gear 222 and is used for cooperating with the isolation cover 2251 and the extension ring 2221 to isolate dust from the driving gear 227 and the annular gear 222.

[0072] It should be noted that: in the specific implementation process of the present invention, as Figures 1-2 shown, the fan in the air extraction section 2132 is started, so that the air sequentially passes through the dust suction port 14, the dust suction pipe 13, the receiving barrel 11, the filter cover 211, the air inlet 2135, the air inlet section 2133, and the converging section 2131 and flows towards the fan, and is discharged at the air extraction section 2132. During this process, the dust suction port 14 is aligned with the position to be dusted, and the dust sequentially passes through the dust suction port 14 and the dust suction pipe 13 and enters the receiving barrel 11, and is filtered by the filter cover 211 to complete the dust removal work;

[0073] As Figures 2-6As shown, as the dust accumulating on the surface of the filter cover 211 gradually increases, the filter holes of the filter cover 211 are blocked. At this time, the driving motor 226 is started. The driving motor 226 drives the annular gear 222 to rotate around the filter cover 211 through the driving gear 227. The annular gear 222 drives the dust scraping rod 223 to continuously scrape off the dust accumulated outside the filter cover 211, so that the filter cover 211 will not be completely blocked by the accumulated dust, thereby avoiding excessive dust accumulation outside the filter cover 211, reducing the negative pressure adsorption force of the filter cover 211 on the dust, and having a good dust collection effect;

[0074] As Figures 2-3 shown, for the dust scraped off by the dust scraping rod 223, when a certain amount of dust accumulates to form a dust mass, since the negative pressure adsorption force of the filter cover 211 is not sufficient to adsorb the concentrated dust mass, at this time, the dust mass will fall onto the dust collection plate 111 for temporary storage, and there is no need to frequently disassemble the air purification device to clean the surface of the filter cover 211, and the dust removal efficiency is high;

[0075] As Figure 5 , Figure 7 shown, in the present invention, the air inlets 2135 are evenly arranged at equal angles on the outer side of the upper part of the air inlet section 2133, ensuring that the dust filtered by the filter cover 211 can be dispersed and accumulated, facilitating the cleaning of the filter cover 211 by the dust scraping rod 223;

[0076] As Figures 3-5 shown, in addition, in the present invention, a partition cover 2251 and a retaining ring 2252 are arranged above the annular gear 222, and an extension ring 2221 is connected to the upper end of the annular gear 222, so that the tooth parts of the annular gear 222 and the driving gear 227 can be effectively protected, ensuring that the dust scraped off by the dust scraping rod 223 will not enter the tooth parts of the annular gear 222 and the driving gear 227, and improving the overall transmission stability;

[0077] As Figures 1-2 shown, after the dust removal is completed, the closing cover 212 is pulled upward, and the closing cover 212 takes out the dust filtering assembly 21 and the cleaning assembly 22 from the containing barrel 11 together, facilitating the discharge of the dust in the containing barrel 11.

[0078] It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variation thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0079] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A controlled environment air purification device, characterized in that, Comprising: A dust suction unit (1) for adsorbing and temporarily storing dust in a controlled environment area; A filtering unit (2), including a dust filtering component (21) disposed inside the dust suction unit (1) for filtering the dust inhaled by the dust suction unit (1), and a cleaning component (22) rotatably disposed outside the dust filtering component (21) for automatically cleaning the dust accumulated on the outer surface of the dust filtering component (21).

2. The controlled environment air purification device according to claim 1, wherein: The dust suction unit (1) further includes: A receiving barrel (11) for receiving the inhaled dust. The lower end of the receiving barrel (11) is fixedly connected to a dust collecting plate (111), and the lower end of the dust collecting plate (111) is fixedly connected to a bracket (12) for supporting the receiving barrel (11). The receiving barrel (11) is provided in an inverted frustum shape; A dust suction pipe (13) communicated with the outside of the receiving barrel (11) for sucking dust into the receiving barrel (11); A dust suction port (14) communicated with one end of the dust suction pipe (13) relative to the receiving barrel (11) for adjusting the dust suction position.

3. The controlled environment air purification device according to claim 2, wherein: The dust filtering component (21) includes: A filtering cover (211) disposed inside the receiving barrel (11) for filtering the air inhaled by the dust suction pipe (13); A closing cover (212) fixedly connected to the upper end of the filtering cover (211) and placed at the upper opening of the receiving barrel (11) for closing the upper opening of the receiving barrel (11); A negative pressure mechanism (213) disposed in the inner region of the filtering cover (211) for providing negative pressure to the filtering cover (211).

4. The controlled environment air purification device according to claim 3, wherein: The negative pressure mechanism (213) includes: An air inlet section (2133) disposed inside the filtering cover (211) and coaxial with the filtering cover (211). A closing ring (2134) is fixedly sleeved on the outer side of the lower part of the air inlet section (2133) for closing the gap between the air inlet section (2133) and the bottom of the filtering cover (211); A converging section (2131) fixedly connected to the lower end of the air inlet section (2133). The inner diameter of the converging section (2131) gradually decreases from top to bottom for accelerating the air flow rate; An air extraction section (2132) fixedly connected to the lower end of the converging section (2131). A fan is disposed inside the air extraction section (2132) for providing negative pressure to the air inlet section (2133).

5. The controlled environment air purification device according to claim 4, wherein: A plurality of air inlet openings (2135) are equiangularly provided on the outer side of the upper part of the air inlet section (2133) for providing multiple negative pressure adsorption points to the filtering cover (211).

6. The controlled environment air purification device according to claim 3, wherein: The cleaning component (22) includes: A fixing ring (221) fixedly sleeved on the outer side of the filtering cover (211) near the bottom; The ring gear (222) is rotatably sleeved outside the filter cover (211) and is placed at the upper end of the fixed ring (221). The middle of the upper end of the ring gear (222) is fixedly connected with an extension ring (2221). The dust scraping rods (223) are arranged in multiple groups at equal angles on the upper end of the ring gear (222) and inside the extension ring (2221), and are used for scraping off the dust accumulated outside the filter cover (211). The limit ring (224) is fixedly connected to the upper ends of the multiple groups of dust scraping rods (223) and is used for cooperating with the ring gear (222) to limit the dust scraping rods (223). The driving motor (226) is installed at the lower end of the fixed ring (221). The upper end of the driving shaft of the driving motor (226) is fixedly connected with a driving gear (227) meshing with the ring gear (222). The isolation mechanism (225) is arranged above the ring gear (222) and is used for isolating dust from the ring gear (222).

7. The controlled environment air purification device according to claim 6, wherein: The isolation mechanism (225) includes: The isolation cover (2251) is fixedly connected to the upper end of the fixed ring (221) and is located outside the driving gear (227) and the ring gear (222). The retaining ring (2252) is fixedly connected to the lower end of the isolation cover (2251) and is located between the extension ring (2221) and the dust scraping rods (223). The lower end of the retaining ring (2252) is close to the upper end of the ring gear (222) and is used for cooperating with the isolation cover (2251) and the extension ring (2221) to isolate dust from the driving gear (227) and the ring gear (222).

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