Low-noise energy-saving environment-friendly mixed flow fan

Abstract

The utility model discloses a low-noise energy-saving environment-friendly mixed flow fan, and particularly relates to the technical field of mixed flow fans, the low-noise energy-saving environment-friendly mixed flow fan comprises a fan body arranged in a supporting cylinder, a linkage shaft is installed at the front end of an output shaft of the fan body, an inner scraper blade and an outer scraper blade are sleeved outside the front end of the linkage shaft, and the cross sections of the inner scraper blade and the outer scraper blade are U-shaped. The outer scraping plate is arranged on the front side of the inner scraping plate; clamping grooves are formed in the two sides of the front end of the linkage shaft, and clamping plates used for being connected with the outer scraper blade are arranged in the clamping grooves. The linkage shaft is connected with the output shaft of the fan body, so that the linkage shaft can drive the inner scraping plate and the outer scraping plate limited by the clamping plate and the clamping groove to rotate, the inner scraping plate can scrape and clean the inner sides of the front dustproof net and the rear dustproof net, and the outer scraping plate can scrape and clean the outer sides of the front dustproof net and the rear dustproof net. Therefore, the front dustproof net and the rear dustproof net can be cleaned in all directions and can be cleaned in real time, shutdown maintenance is not needed, and the using effect of the fan body can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mixed-flow fans, and more specifically to a low-noise, energy-saving and environmental protection mixed-flow fan. Background Technique

[0002] A mixed-flow fan, as a new type of fan between an axial-flow fan and a centrifugal fan, combines the advantages of both. Its impeller makes the air do both centrifugal motion and axial motion, and the motion of the air in the shell mixes the two motion forms of axial flow and centrifugation. This unique design enables the mixed-flow fan to perform excellently in terms of wind pressure and flow rate, filling the blank area between the axial-flow fan and the centrifugal fan. Among them, long-term exposure to a high-intensity noise environment can cause irreversible damage to people's hearing and even trigger health problems such as cardiovascular diseases. Therefore, it is necessary to reduce the noise of the mixed-flow fan to reduce potential risks and protect the physical health of personnel.

[0003] As shown in the patent document with the publication number CN216342922U, although this prior art can quickly open and close the dust-proof net plate through a quick-opening and closing device, which is convenient for the disassembly and cleaning of the overall device. At the same time, through the setting of a noise reduction layer, the noise is reduced, and the shock absorption layer also reduces the vibration and thus reduces the noise of the low-noise, energy-saving and environmental protection mixed-flow fan. However, in this prior art, the dust-proof net plate and the magnetic adsorption net need to be cleaned after the machine is stopped, and the dust-proof net plate and the magnetic adsorption net cannot be cleaned in real time, which will affect the use performance of the fan. Content of the Utility Model

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides a low-noise, energy-saving and environmental protection mixed-flow fan. Through the connection between the linkage shaft and the output shaft of the fan body, the linkage shaft can drive the inner scraper and the outer scraper limited by the clamping plate and the clamping groove to rotate, so that the front dust-proof net and the rear dust-proof net can be cleaned comprehensively, and can be cleaned in real time without stopping for maintenance, which can effectively improve the use effect of the fan body to solve the problems appearing in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A low-noise, energy-saving and environmental protection mixed-flow fan, including a fan body arranged in a support cylinder, and a linkage shaft is installed at the front end of the output shaft of the fan body. The front end of the linkage shaft is externally sleeved with an inner scraper and an outer scraper with a U-shaped cross-section, and the outer scraper is arranged on the front side of the inner scraper;

[0006] Clamping grooves are opened on both sides of the front end of the linkage shaft, and clamping plates for connecting the outer scraper are arranged inside the clamping grooves;

[0007] A fastening groove is opened at the front end of the linkage shaft, and a fastening bolt is arranged inside the fastening groove. The fastening bolt is arranged on the front side of the outer scraper, and the front end diameter of the fastening bolt is larger than the height of the outer scraper.

[0008] In a preferred embodiment, a front dust-proof net sleeving the outside of the linkage shaft is provided at the front end of the support cylinder, and a slot is formed on one side of the front end of the support cylinder corresponding to the front dust-proof net. The front dust-proof net is fixed to the support cylinder by bolts;

[0009] The front dust-proof net is arranged between the inner scraper and the outer scraper, and the front and rear sides of the front dust-proof net are respectively in contact with the sides of the inner scraper and the outer scraper close to each other.

[0010] In a preferred embodiment, air inlets are formed on both sides of the rear end of the support cylinder, and a rear dust-proof net connected by bolts is installed inside the air inlets;

[0011] The outer sides of both ends of the inner scraper are in contact with the inner side walls of the rear dust-proof net, and the inner sides of both ends of the outer scraper are in contact with the outside of the rear dust-proof net.

[0012] In a preferred embodiment, a sound insulation layer is installed inside the support cylinder, and the sound insulation layer is made of sound insulation felt material.

[0013] In a preferred embodiment, a fixed shaft is installed at the rear end of the support cylinder, and a fixed ring is sleeved on the outside of the fixed shaft. A fixed frame for supporting the support cylinder is installed at the bottom end of the fixed ring.

[0014] In a preferred embodiment, a plurality of buffer pads distributed in a circular array are installed inside the support cylinder, and a support plate for connecting the fan body is installed on the side of the buffer pad away from the support cylinder.

[0015] The technical effects and advantages of the present utility model:

[0016] Through the connection between the linkage shaft and the output shaft of the fan body, the linkage shaft can drive the inner scraper and the outer scraper limited by the clamping plate and the clamping groove to rotate. The inner scraper can scrape and clean the inner sides of the front dust-proof net and the rear dust-proof net, and the outer scraper can scrape and clean the outer sides of the front dust-proof net and the rear dust-proof net. In this way, the front dust-proof net and the rear dust-proof net can be cleaned in all directions, and can be cleaned in real time without shutdown maintenance. Thus, the use effect of the fan body can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 is a rear view of the support cylinder of the present utility model;

[0019] Figure 3 is a side sectional view of the support cylinder of the present utility model;

[0020] Figure 4 is an exploded view of the outer scraper of the present utility model;

[0021] Figure 5 is the enlarged view of part A in the present utility model; Figure 4 in the present utility model;

[0022] Figure 6 is the front view of the support cylinder of the present utility model;

[0023] Figure 7 is the cross-sectional view of the sound insulation layer of the present utility model.

[0024] The reference numerals are: 1, support cylinder; 2, fan body; 3, linkage shaft; 4, inner scraper; 5, outer scraper; 6, card slot; 7, card plate; 8, fastening groove; 9, fastening bolt; 10, front dust-proof net; 11, embedding groove; 12, air inlet; 13, rear dust-proof net; 14, sound insulation layer; 15, fixed shaft; 16, fixed ring; 17, fixed bracket; 18, buffer pad; 19, support plate. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0026] Referring to the attached Figure 1 - attached Figure 7 , the present utility model provides a low-noise energy-saving and environment-friendly mixed-flow fan, which includes a fan body 2 arranged in a support cylinder 1, and a linkage shaft 3 is installed at the front end of the output shaft of the fan body 2. An inner scraper 4 and an outer scraper 5 with a U-shaped cross-section are sleeved outside the front end of the linkage shaft 3, and the outer scraper 5 is arranged on the front side of the inner scraper 4; card slots 6 are opened on both sides of the front end of the linkage shaft 3, and a card plate 7 for connecting the outer scraper 5 is arranged inside the card slots 6; a fastening groove 8 is opened at the front end of the linkage shaft 3, and a fastening bolt 9 is arranged inside the fastening groove 8. The fastening bolt 9 is arranged on the front side of the outer scraper 5, and the diameter of the front end of the fastening bolt 9 is larger than the height of the outer scraper 5.

[0027] While the fan body 2 is running, it drives the linkage shaft 3 to drive the inner scraper 4 and the outer scraper 5 limited by the card plate 7 and the card slot 6 to rotate. Among them, the rotation of the inner scraper 4 can scrape and clean the inner side of the front dust-proof net 10 and the inner side of the rear dust-proof net 13, and the rotation of the outer scraper 5 can scrape and clean the outer side of the front dust-proof net 10 and the outer side of the rear dust-proof net 13. In this way, the front dust-proof net 10 and the rear dust-proof net 13 can be cleaned comprehensively and in real time without stopping for maintenance, so as to improve the use effect of the fan body 2;

[0028] Meanwhile, by removing the fastening bolt 9, the fastening bolt 9 no longer limits the outer scraper 5, thus facilitating the staff to remove the outer scraper 5, and then remove the front dust-proof net 10 fixed by bolts, thereby facilitating the maintenance of the internal structure of the support cylinder 1.

[0029] To ensure the air supply effect during the operation of the fan body 2, it is necessary to ensure the air flow path, such as Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, a front dust-proof net 10 sleeved outside the linkage shaft 3 is provided at the front end of the support cylinder 1, and a slot 11 is formed on one side of the front end of the support cylinder 1 corresponding to the front dust-proof net 10. The front dust-proof net 10 is fixed to the support cylinder 1 by bolts; the front dust-proof net 10 is arranged between the inner scraper 4 and the outer scraper 5, and the front and rear sides of the front dust-proof net 10 are respectively in contact with the sides of the inner scraper 4 and the outer scraper 5 close to each other. Air inlets 12 are formed on both sides of the rear end of the support cylinder 1, and a rear dust-proof net 13 connected by bolts is installed inside the air inlets 12; both outer sides of the two ends of the inner scraper 4 are in contact with the inner side wall of the rear dust-proof net 13, and both inner sides of the two ends of the outer scraper 5 are in contact with the outside of the rear dust-proof net 13. Through the setting of the air inlets 12, when the fan body 2 operates, air can be conveyed into the support cylinder 1 through the air inlets 12 and then discharged from the front end of the support cylinder 1, thereby ensuring the air supply effect of the fan body 2. Among them, the settings of the front dust-proof net 10 and the rear dust-proof net 13 can effectively block dust and other impurities, preventing dust and other impurities from entering the support cylinder 1 and causing pollution. Also, since both the front dust-proof net 10 and the rear dust-proof net 13 are connected to the support cylinder 1 by bolts, it is convenient to disassemble and maintain the front dust-proof net 10 and the rear dust-proof net 13.

[0030] Meanwhile, to avoid noise pollution of the environment during the operation of the fan body 2, noise reduction treatment needs to be carried out on the fan body 2, such as Figure 7 As shown, a sound insulation layer 14 is installed inside the support cylinder 1. The sound insulation layer 14 is made of sound insulation felt material. By using sound insulation felt with a dense structure, heavy mass, and effective sound blocking ability to make the sound insulation layer 14, the support cylinder 1 can block the noise generated during the operation of the fan body 2, thereby achieving the effect of noise reduction treatment for the fan body 2. Also, since a plurality of buffer pads 18 distributed in a circular array are installed inside the support cylinder 1, and a support plate 19 for connecting the fan body 2 is installed on the side of the buffer pads 18 away from the support cylinder 1, the buffer pads 18 can buffer the operation of the fan body 2, thereby avoiding the kinetic energy sound of the fan body 2.

[0031] To ensure the operation stability of the above structure, it is necessary to enhance the support effect on the support cylinder 1, such as Figure 1 and Figure 2As shown, a fixed shaft 15 is installed at the rear end of the support cylinder 1, and a fixed ring 16 is sleeved outside the fixed shaft 15. A fixed frame 17 for supporting the support cylinder 1 is installed at the bottom end of the fixed ring 16. Through the connection between the fixed shaft 15 and the support cylinder 1, the fixed ring 16 and the fixed frame 17 on the fixed column can support the support cylinder 1, thereby ensuring the stability of the support cylinder 1 and preventing the support cylinder 1 from tilting.

[0032] Finally, the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A low-noise, energy-saving and environmentally friendly mixed flow fan, characterized by: It comprises a fan body (2) arranged in a support tube (1), and a linkage shaft (3) is installed at the front end of the output shaft of the fan body (2), and an inner scraper (4) and an outer scraper (5) with a U-shaped cross section are sleeved on the outer side of the front end of the linkage shaft (3), and the outer scraper (5) is arranged on the front side of the inner scraper (4); The front end of the linkage shaft (3) is provided with a clamping groove (6) on both sides, and a clamping plate (7) for connecting to the outer scraper (5) is provided inside the clamping groove (6); A fastening groove (8) is provided at the front end of the linkage shaft (3), a fastening bolt (9) is provided inside the fastening groove (8), the fastening bolt (9) is arranged at the front side of the outer scraper (5), and the front end diameter of the fastening bolt (9) is greater than the height of the outer scraper (5).

2. A low-noise, energy-saving and environmentally friendly mixed flow fan according to claim 1, characterized in that: The front end of the support tube (1) is provided with a front dust screen (10) sleeved on the outside of the linkage shaft (3), and a groove (11) is provided on one side of the front end of the support tube (1) corresponding to the front dust screen (10), and the front dust screen (10) is fixed to the support tube (1) by bolts; The front dustproof net (10) is arranged between the inner scraper (4) and the outer scraper (5), and the front and rear sides of the front dustproof net (10) are respectively in contact with the side close to the inner scraper (4) and the outer scraper (5).

3. The low-noise, energy-saving and environmentally friendly mixed flow fan according to claim 1, characterized in that: The support tube (1) is provided with air inlets (12) on both sides of the rear end, and a rear dust screen (13) connected by bolts is installed inside the air inlet (12); The outer sides of both ends of the inner scraper (4) are in contact with the inner side wall of the rear dustproof net (13), and the inner sides of both ends of the outer scraper (5) are in contact with the outside of the rear dustproof net (13).

4. The low-noise, energy-saving and environmentally friendly mixed flow fan according to claim 1, characterized in that: A sound insulation layer (14) is installed inside the support tube (1), and the sound insulation layer (14) is made of a sound insulation felt material.

5. The low-noise, energy-saving and environmentally friendly mixed flow fan according to claim 1, characterized in that: A fixed shaft (15) is installed at the rear end of the support tube (1), and a fixed ring (16) is sleeved on the outside of the fixed shaft (15), and a fixed frame (17) for supporting the support tube (1) is installed at the bottom end of the fixed ring (16).

6. A low-noise, energy-saving and environmentally friendly mixed flow fan according to claim 1, characterized in that: A plurality of buffer pads (18) distributed in a ring array are installed inside the support cylinder (1), and a support plate (19) for connecting to a fan body (2) is installed on a side of the buffer pad (18) away from the support cylinder (1).

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