Centrifugal fan impeller slag removing device

Abstract

The invention relates to the technical field of centrifugal fans, and discloses a centrifugal fan impeller slag removing device which comprises a transmission mechanism, the transmission mechanism is connected with a lower cover body, a lower cover plate is arranged in the lower cover body and is in transmission connection with the transmission mechanism, and a plurality of fan impeller blades are annularly arranged on the surface of the lower cover plate at equal intervals. The fan impeller blade is connected with the scraping mechanism in a sliding mode, the scraping mechanism is connected with the upper cover plate through a plurality of first connecting rods, and the scraping mechanism is connected with the upper cover body through a plurality of second connecting rods. The centrifugal fan impeller blade cleaning device solves the problems that in the prior art, centrifugal fan impeller blades are cleaned by manually disassembling equipment or directly injecting cleaning liquid to enable a centrifugal fan to rotate automatically, the efficiency is low although the centrifugal fan impeller blades can be cleaned effectively, and the efficiency is low although the centrifugal fan impeller blades can be cleaned automatically in the second mode. However, the cleaning effect on molten particles in a high-temperature environment is poor.

Description

Technical Field

[0001] The invention relates to the technical field of centrifugal fans, and in particular to a centrifugal fan impeller slag removal device. Background Art

[0002] Patent No. CN111906475A discloses an automatic slag removal device for centrifugal fan impellers, which belongs to the field of fan impeller processing. An automatic slag removal device for centrifugal fan impellers includes a workbench, the upper end of the workbench is fixedly connected with a vertical plate, the side wall of the vertical plate is rotatably connected with a main shaft, the left end of the main shaft is fixedly connected with an assembly block that cooperates with the impeller, the upper end of the workbench is fixedly installed with a motor whose output shaft is fixedly connected to one end of a lead screw, the outer wall of the lead screw is sleeved with a slide plate that is slidably connected to the workbench, the side wall of the slide plate is fixedly connected with two symmetrically arranged cleaning plates through two connecting rods, the upper end of the workbench is provided with a recovery groove corresponding to the position of the cleaning plate, the side walls of the two cleaning plates are provided with a scraping mechanism, and an automatic angle turning mechanism is provided between the slide plate and the main shaft; the invention has a high degree of automation, can remove welding slag on the fan impeller, and has higher removal efficiency and better centrifugal removal effect.

[0003] The main function of centrifugal fans in the welding process is to remove welding smoke particles and harmful gases generated by welding, maintain air circulation, and ensure the safety and health of operators. Centrifugal fans play a key role in welding dust removal systems. However, during the operation of centrifugal fans, when these gases containing impurities pass through the centrifugal fans, due to the effect of gas vortexes, the impurities will be adsorbed on the non-working surface of the blades. If the centrifugal fan is placed in a high temperature environment, or the inhaled gas contains molten particles, these particles will solidify due to the decrease in temperature after contacting the blades, and slag will also be formed. These slags adhere to the surface of the blades, which not only increases the load of the fan, but also destroys the balance of the impeller, causing the fan to vibrate more and affect the air induction effect.

[0004] The existing methods of cleaning the impeller blades of centrifugal fans are to manually disassemble the equipment for cleaning or directly inject cleaning liquid to let the centrifugal fan self-rotate for cleaning. Although the first method can effectively clean the impeller blades of the centrifugal fan, the efficiency is low. Although the second method can self-clean, it has poor cleaning effect on molten particles in a high temperature environment.

[0005] Therefore, a centrifugal fan impeller slag removal device is needed to solve the above problems. Summary of the invention

[0006] The object of the present invention is to provide a centrifugal fan impeller slag removal device to solve the problems raised in the above background technology.

[0007] In order to solve the above technical problems, the technical solution of the present invention is: a centrifugal fan impeller slag removal device, comprising a transmission mechanism, the transmission mechanism is connected to a lower cover body, a lower cover plate is arranged in the lower cover body, the lower cover plate is transmission-connected to the transmission mechanism, a plurality of fan impeller blades are arranged in an annular shape and at equal intervals on the surface of the lower cover plate, the fan impeller blades are slidably connected to a scraping mechanism, the scraping mechanism is connected to an upper cover plate through a plurality of first connecting rods, and the scraping mechanism is connected to the upper cover body through a plurality of second connecting rods; The disengagement mechanism includes a second electric telescopic rod, which is connected to the lower cover body, an output end of the second electric telescopic rod is connected to one end of a symmetrically arranged guide block, the guide block is in sliding contact with the second scraper, the guide blocks are slidably connected to both sides of the arc-shaped rack, the arc-shaped rack is transmission-connected to the output end of the servo motor, the servo motor is fixedly connected to the guide block, the inner ring of the arc-shaped rack is connected to the second scraper, the second scraper is in contact with the melting block, and the melting block is connected to the inner wall of the sewage discharge groove opened in the lower cover body.

[0008] Furthermore, the scraping mechanism includes a first electric telescopic rod, the output end surface of the first electric telescopic rod is connected to the inner ring of the bearing, the outer ring of the bearing is connected to the inner ring of the lower cover plate, the outer ring of the rod body at one end of the first electric telescopic rod is rotatably connected to the inner ring of the rotating sleeve, the outer ring of one end of the rotating sleeve is rotatably connected to the inner ring of the first scraper, the first scraper is provided with a plurality of hollow scraping grooves equidistantly in a ring shape, the scraping grooves are slidably connected to the surface of the fan impeller blades, and the surface of the first scraper and the outer ring of the rotating sleeve are both in contact with the disengagement mechanism.

[0009] Furthermore, the other end of the rotating sleeve is connected to the upper cover plate through a plurality of first connecting rods, and the surface of the upper cover plate is in contact with the disengagement mechanism.

[0010] Furthermore, the sewage trough is slidably connected to sliding grooves provided on both sides of the collecting box.

[0011] Furthermore, the other end of the first electric telescopic rod is connected to the upper cover body through a plurality of second connecting rods, and the outer ring of the upper cover body is slidably connected to the inner wall of the lower cover body.

[0012] Furthermore, a liquid inlet is provided at the upper end of the lower cover body, and the liquid inlet is connected to a hose.

[0013] Compared with the prior art, the technical solution of the present invention has the following advantages: (1) The scraping mechanism can be activated to scrape the particles on the fan impeller blades to one side, and then the slag is thrown out under the action of centrifugal force. At the same time, the molten particles in the high temperature environment adhere to the fan impeller blades and the upper cover plate, and solidify due to the temperature drop. The scraping mechanism can guide and scrape the molten particles on the fan impeller blades and the upper cover plate, thereby avoiding the increase of the fan load, affecting the balance of the impeller, aggravating the vibration, and causing the deterioration of the induced draft effect; (2) The slag particles leaving the frit block can be collected uniformly through the collection box to avoid environmental pollution; and the slag particles on the frit block can be cut off through the sliding connection between the outer ring of the upper cover and the inner wall of the lower cover to prevent the slag particles from being unable to break away from the frit block and enter the collection box; the liquid inlet opened at the upper end of the lower cover can better and conveniently input the cleaning agent mixed with warm water, so as to better cooperate with the scraping mechanism and the separation mechanism to remove the slag particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the overall structure of the bottom of the present invention; Figure 3 An exploded view of the present invention; Figure 4 It is a schematic diagram of the internal structure of the lower cover body in the present invention; Figure 5 It is a structural schematic diagram of the scraping mechanism in the present invention; Figure 6 for Figure 5 Enlarged view of point A in the middle; Figure 7 It is a schematic diagram of the structure of the separation mechanism of the present invention, in which the slag on the scraping mechanism is separated; Figure 8 It is a structural schematic diagram of the disengagement mechanism in the present invention; Fig. 9 It is a schematic diagram of the structure of the separation mechanism of the present invention when it is separated from the slag; Fig.10 for Fig. 9 Enlarged view of point B in the middle; Fig.11 It is a schematic diagram of the structure of the collecting box in the present invention.

[0015] In the figure: 1-transmission mechanism, 2-upper cover, 3-lower cover, 4-scraping mechanism, 41-first electric telescopic rod, 42-first scraper, 421-scraping groove, 5-detachment mechanism, 51-second electric telescopic rod, 52-guide block, 53-arc rack, 54-servo motor, 55-second scraper, 56-melting guide block, 6-fan impeller, 8-lower cover, 9-upper cover, 10-bearing, 11-collection box, 111-chute, 12-rotating sleeve. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0017] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. "Include" or "comprise" and other similar words used in the present disclosure mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and other similar words are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0018] like Figures 1 to 11 As shown, a centrifugal fan impeller slag removal device provided by the present invention includes a transmission mechanism 1, which is connected to a lower cover body 3, a lower cover plate 8 is arranged in the lower cover body 3, and the lower cover plate 8 is transmission-connected to the transmission mechanism 1. A plurality of fan impeller blades 6 are arranged in an annular shape and equidistantly on the surface of the lower cover plate 8. The fan impeller blades 6 are slidingly connected to a scraping mechanism 4, the scraping mechanism 4 is connected to an upper cover plate 9 through a plurality of first connecting rods, and the scraping mechanism 4 is connected to an upper cover body 2 through a plurality of second connecting rods. When the scraping mechanism 4 is started, particles on the fan impeller blades 6 can be scraped to one side, and then the slag can be thrown out under the action of centrifugal force. At the same time, the molten particles in a high temperature environment adhere to the fan impeller blades 6 and the upper cover plate 9, and solidify due to the temperature reduction. The scraping mechanism 4 can guide and scrape the molten particles on the fan impeller blades 6 and the upper cover plate 9, thereby avoiding the load increase of the fan, affecting the balance of the impeller, aggravating the vibration, and causing the air induction effect to deteriorate.

[0019] The scraping mechanism 4 includes a first electric telescopic rod 41, the output end surface of the first electric telescopic rod 41 is connected to the inner ring of the bearing 10, the outer ring of the bearing 10 is connected to the inner ring of the lower cover plate 8, the outer ring of the rod at one end of the first electric telescopic rod 41 is rotatably connected to the inner ring of the rotating sleeve 12, the outer ring of the rotating sleeve 12 at one end is rotatably connected to the inner ring of the first scraper 42, the first scraper 42 is annularly equidistantly provided with a plurality of hollow scraping grooves 421, the inner wall of the scraping grooves 421 is slidably connected to the surface of the fan impeller blade 6, the surface of the first scraper 42 and the outer ring of the rotating sleeve 12 are both in contact with the disengagement mechanism 5, the rotating sleeve 12 and the first scraper 42 are driven to move by the rod body of the first electric telescopic rod 41, the first scraper 42 is annularly equidistantly provided with a plurality of hollow scraping grooves 421, which will scrape and collect particles on the surface of the fan impeller blade 6, and then the fan impeller blade 6 is driven to rotate by the transmission mechanism 1, and the particles are thrown out under the action of centrifugal force, thereby avoiding increasing the load of the centrifugal fan.

[0020] The other end of the rotating sleeve 12 is connected to the upper cover plate 9 through a plurality of first connecting rods. The surface of the upper cover plate 9 contacts the disengagement mechanism 5. The disengagement mechanism 5 comprises a second electric telescopic rod 51. The second electric telescopic rod 51 is connected to the lower cover body 3. The output end of the second electric telescopic rod 51 is connected to one end of a symmetrically arranged guide block 52. The guide block 52 is in sliding contact with the second scraper 55. The gas in a high temperature environment or sucked by the centrifugal fan contains molten particles. These particles will adhere to the surface of the fan impeller blade 6 when they come into contact with it, causing the load of the centrifugal fan to increase. The fan impeller blade 6 drives the upper cover plate 9, the first scraper 42 and the rotating sleeve 12 to rotate through the second electric telescopic rod 51 to connect the guide block 52 and the second scraper 55, and then under the transmission of the transmission mechanism 1, the fan impeller blade 6 drives the upper cover plate 9, the first scraper 42 and the rotating sleeve 12 to rotate, so that the second scraper 55 scrapes off the fan impeller blade 6 and the molten particles on the upper cover plate 9, thereby reducing the load of the centrifugal fan.

[0021] The guide blocks 52 are slidably connected to the two sides of the arc-shaped rack 53, the arc-shaped rack 53 is transmission-connected to the output end of the servo motor 54, the servo motor 54 is fixedly connected to the guide block 52, the inner circle of the arc-shaped rack 53 is connected to the second scraper 55, the second scraper 55 contacts the guide melting block 56, the guide melting block 56 is connected to the inner wall of the sewage trough provided in the lower cover body 3, and the second electric telescopic rod 51 continues to extend, so that the second scraper 55 contacts the guide melting block 56, and then the servo motor 54 electrically moves the arc-shaped rack 53, and then the arc-shaped rack 53 drives the second scraper 55 to move, so that the slag particles on the second scraper 55 are hung on the guide melting block 56, and then separated from the guide melting block 56 under the action of gravity or blown away from the guide melting block 56 by the centrifugal wind force of the fan impeller 6.

[0022] The drain trough is slidably connected to the chutes 111 provided on both sides of the collecting box 11 , and the slag particles leaving the melting block 56 can be uniformly collected through the collecting box 11 to avoid environmental pollution.

[0023] The other end of the first electric telescopic rod 41 is connected to the upper cover body 2 through a plurality of second connecting rods, and the outer ring of the upper cover body 2 is slidably connected to the inner wall of the lower cover body 3. The slag particles on the melting block 56 can be cut off through the sliding connection between the outer ring of the upper cover body 2 and the inner wall of the lower cover body 3, so as to prevent the slag particles from being unable to break away from the melting block 56 and enter the collection box 11.

[0024] A liquid inlet is opened at the upper end of the lower cover body 3, and the liquid inlet is connected to a hose. The cleaning agent mixed with warm water can be better and conveniently input through the liquid inlet opened at the upper end of the lower cover body 3, so as to better cooperate with the scraping mechanism 4 and the separation mechanism 5 to remove the slag particles.

[0025] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. A centrifugal fan impeller slag removal device, comprising a transmission mechanism (1), characterized in that: The transmission mechanism (1) is connected to the lower cover body (3), a lower cover plate (8) is arranged inside the lower cover body (3), the lower cover plate (8) is transmission-connected to the transmission mechanism (1), a plurality of fan impeller blades (6) are arranged in an annular shape and at equal intervals on the surface of the lower cover plate (8), the fan impeller blades (6) are slidably connected to the scraping mechanism (4), the scraping mechanism (4) is connected to the upper cover plate (9) via a plurality of first connecting rods, and the scraping mechanism (4) is connected to the upper cover body (2) via a plurality of second connecting rods; The disengagement mechanism (5) comprises a second electric telescopic rod (51), the second electric telescopic rod (51) is connected to the lower cover body (3), the output end of the second electric telescopic rod (51) is connected to one end of a symmetrically arranged guide block (52), the guide block (52) is in sliding contact with a second scraper (55), the guide blocks (52) are in sliding connection with both sides of an arc-shaped rack (53), the arc-shaped rack (53) is transmission-connected to the output end of a servo motor (54), the servo motor (54) is fixedly connected to the guide block (52), the inner ring of the arc-shaped rack (53) is connected to the second scraper (55), the second scraper (55) is in contact with a melting block (56), and the melting block (56) is connected to the inner wall of a sewage discharge groove provided in the lower cover body (3).

2. The centrifugal fan impeller slag removal device according to claim 1, characterized in that: The scraping mechanism (4) comprises a first electric telescopic rod (41), the output end surface of the first electric telescopic rod (41) is connected to the inner ring of the bearing (10), the outer ring of the bearing (10) is connected to the inner ring of the lower cover plate (8), the outer ring of the rod body at one end of the first electric telescopic rod (41) is rotatably connected to the inner ring of the rotating sleeve (12), the outer ring of one end of the rotating sleeve (12) is rotatably connected to the inner ring of the first scraper (42), the first scraper (42) is provided with a plurality of hollow scraping grooves (421) at equal intervals in a ring shape, the scraping grooves (421) are slidably connected to the surface of the fan impeller (6), and the surface of the first scraper (42) and the outer ring of the rotating sleeve (12) are both in contact with the separation mechanism (5).

3. The centrifugal fan impeller slag removal device according to claim 2, characterized in that: The other end of the rotating sleeve (12) is connected to the upper cover plate (9) via a plurality of first connecting rods, and the surface of the upper cover plate (9) is in contact with the disengagement mechanism (5).

4. The centrifugal fan impeller slag removal device according to claim 1, characterized in that: The sewage discharge trough is slidably connected to the slide grooves (111) provided on both sides of the collection box (11).

5. The centrifugal fan impeller slag removal device according to claim 2, characterized in that: The other end of the first electric telescopic rod (41) is connected to the upper cover body (2) via a plurality of second connecting rods, and the outer ring of the upper cover body (2) is slidably connected to the inner wall of the lower cover body (3).

6. The centrifugal fan impeller slag removal device according to claim 5, characterized in that: The upper end of the lower cover body (3) is provided with a liquid inlet, and the liquid inlet is connected to a hose.

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