Environment-friendly dust removal centrifugal fan

Abstract

The invention relates to the technical field of ventilation equipment, in particular to an environment-friendly dust removal centrifugal fan which comprises a mounting frame, a centrifugal fan and the like. A centrifugal fan is fixedly connected to the mounting frame; the centrifugal fan is connected with a connecting frame, and the connecting frame communicates with an air inlet of the centrifugal fan. A plurality of sliding grooves are formed in the connecting frame. The suction force generated in the operation process of the centrifugal fan can drive the first filter screen to move towards the direction of the centrifugal fan, then the first filter screen drives the sliding block to slide in the sliding groove, air flow can penetrate through the first filter screen to enter the centrifugal fan at the moment and can be influenced by dust intercepted on the first filter screen, and the air flow is prevented from entering the centrifugal fan. Under the suction effect of the centrifugal fan, the baffle is forced to rotate with the rotating shaft connected with the connecting frame as the rotating center, meanwhile, the baffle and the torsion spring at the connecting position of the baffle and the connecting frame are extruded, in other words, part of airflow penetrates through the second filter screen to enter the connecting frame, then enters the centrifugal fan and is finally exhausted through the exhaust port in the centrifugal fan.

Description

Technical Field

[0001] The invention relates to the technical field of ventilation equipment, and in particular to an environmentally friendly dust-removing centrifugal fan. Background Art

[0002] Centrifugal fans are mainly used to circulate and renew indoor air, ensuring the inflow of fresh air and the removal of dirty air. However, they are often affected by dust during use, especially in the filtration system, which will be attached with a large amount of dust. After the dust is attached, it will affect the airflow of the centrifugal fan, resulting in a reduction in the amount of air intake and discharge. If it is not cleaned in time, the suction force of the centrifugal fan will cause damage to the filtration system, and then damage the centrifugal fan. Summary of the invention

[0003] In order to overcome the disadvantage that the centrifugal fan is often affected by dust during use, especially in its filter system, a large amount of dust will be attached. After the dust is attached, the air circulation of the centrifugal fan will be affected, resulting in a reduction in the amount of air intake and discharge. If it is not cleaned in time, the suction force of the centrifugal fan will cause damage to the filter system, and then cause damage to the centrifugal fan. The present invention provides an environmentally friendly dust removal centrifugal fan.

[0004] The technical solution of the present invention is: an environmentally friendly dust-removing centrifugal ventilator, comprising a mounting frame, a centrifugal fan and a connecting frame; the centrifugal fan is fixedly connected to the mounting frame; the centrifugal fan is connected to a connecting frame, and the connecting frame is connected to the air inlet of the centrifugal fan; a plurality of slide grooves are opened inside the connecting frame; it also includes a first filter screen, a slider, an elastic member, a telescopic rod, a baffle, a limiter and a second filter screen; a slider is slidably connected to each slide groove of the connecting frame; all the sliders are commonly connected to the first filter screen; each slider is fixedly connected to an elastic member; all the elastic members are commonly fixedly connected to the connecting frame; a plurality of telescopic rods are fixedly connected to the centrifugal fan; the telescopic ends of all the telescopic rods are commonly fixedly connected to the first filter screen; a plurality of baffles are rotatably connected to the connecting frame; a torsion spring is provided at the connection between each baffle and the connecting frame; and a plurality of second filter screens are connected to the connecting frame.

[0005] Further description: the first filter screen and the slider are arranged in a quick-release structure.

[0006] To further explain, the telescopic pole has a built-in self-locking system.

[0007] To further explain, the telescopic rod has a pressure switch built into it.

[0008] Further explanation: the telescopic rod has a built-in alarm.

[0009] Further description: the connection frame and the second filter are arranged in a quick-release structure.

[0010] Further description, it also includes a cleaning component, which includes a connecting shaft, a brush plate, a connecting plate, a telescopic cloth and a sealing plate; a connecting shaft is fixedly connected to the fan blades of the centrifugal fan; a number of brush plates are fixedly connected to the connecting shaft; a number of connecting plates are fixedly connected to the first filter screen; each connecting plate is fixedly connected to a telescopic cloth; the other ends of all the telescopic cloths are fixedly connected to the connecting frame, and a sealing plate is fixedly connected to the first filter screen.

[0011] Further explanation: a plurality of sewage outlets are provided on the connection frame.

[0012] Further description: a rubber ring is provided on the sealing plate.

[0013] It is further explained that the blocking plate is conveniently provided with a wedge-shaped structure.

[0014] The present invention has the following advantages: 1. The present invention drives the first filter to move toward the direction of the centrifugal fan through the suction force generated during the operation of the centrifugal fan, and then the first filter drives the slider to slide in the slide groove, and compresses the corresponding elastic member at the same time. At the same time, the first filter compresses the telescopic rod to shrink the telescopic rod, and then the telescopic rod triggers its built-in pressure switch. Since the pressure switch is a control limit switch, that is, the limiter is forced to shrink, so that the baffle loses its limit. Since the airflow can pass through the first filter and enter the centrifugal fan at this time, it will be affected by the dust intercepted on the first filter. That is, under the action of the centrifugal fan suction, the baffle is forced to rotate with the rotating shaft connected to the connecting frame as the rotation center, and at the same time, the baffle is squeezed to the torsion spring at the connection with the connecting frame, that is, part of the airflow passes through the second filter and enters the connecting frame, and then enters the centrifugal fan and is finally discharged through the exhaust port thereon. At the same time, after the telescopic rod shrinks, its built-in alarm is triggered to remind the staff to clean the first filter. Then the staff uses a cleaning tool to clean the dust intercepted on the first filter.

[0015] 2. The present invention allows the bristles on the brush plate to pass through the filter holes on the first filter screen, that is, the bristles on the brush plate are first used to clean the dust on the first filter screen, and at the same time, the fan blades of the centrifugal fan drive the connecting shaft to rotate, and the connecting shaft drives the brush plate to clean the dust on the first filter screen, and at the same time, the connecting frame is blocked by the blocking plate. At this time, the airflow only enters the connecting frame through the second filter screen, that is, the airflow will not enter the connecting frame through the first filter screen. At this time, the dust on the first filter screen will not be affected by the airflow and adsorbed on the first filter screen, so that the cleaned dust is discharged through the sewage outlet, that is, the dust on the first filter screen is automatically cleaned in this way. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of the environmentally friendly dust removal centrifugal fan of the present invention;

[0017] Figure 2 This is a schematic diagram of the combined structure of the first filter screen and the telescopic rod of the environmentally friendly dust removal centrifugal fan of the present invention;

[0018] Figure 3 This is a schematic diagram of the combined structure of the first filter screen, the slider and the elastic member of the environmentally friendly dust removal centrifugal fan of the present invention;

[0019] Figure 4 for Figure 3 A magnified image of area A;

[0020] Figure 5 This is a schematic structural diagram of a baffle and a stopper of an environmentally friendly dust removal centrifugal fan of the present invention;

[0021] Figure 6 This is a schematic diagram of the combined structure of the connecting shaft and the brush plate of the environmentally friendly dust removal centrifugal fan of the present invention;

[0022] Figure 7 It is a schematic diagram of the combined structure of the connecting plate, telescopic cloth and blocking plate of the environmentally friendly dust removal centrifugal fan of the present invention.

[0023] In the above drawings: 1-mounting frame, 2-centrifugal fan, 3-connecting frame, 3001-chute, 3002-drain outlet, 4-first filter screen, 5-slider, 6-elastic member, 7-telescopic rod, 8-baffle, 9-limiter, 10-second filter screen, 101-connecting shaft, 102-brush plate, 103-connecting plate, 104-telescopic cloth, 105-sealing plate, 10501-rubber ring. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with specific embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention but are not intended to limit the present invention.

[0025] Example 1

[0026] An environmentally friendly dust removal centrifugal fan, such as Figure 1-Figure 5 As shown, it includes a mounting frame 1, a centrifugal fan 2 and a connecting frame 3; the mounting frame 1 is fixedly connected to the centrifugal fan 2; the connecting frame 3 is connected to the centrifugal fan 2, and the connecting frame 3 is connected to the air inlet of the centrifugal fan 2; four equidistantly distributed slide slots 3001 are opened inside the connecting frame 3;

[0027] It also includes a first filter screen 4, a slider 5, an elastic member 6, a telescopic rod 7, a baffle 8, a limiter 9 and a second filter screen 10; each slide groove 3001 of the connecting frame 3 is slidably connected to a slider 5; all the sliders 5 are commonly connected to the first filter screen 4; each slider 5 is fixedly connected to an elastic member 6; all the elastic members 6 are commonly fixedly connected to the connecting frame 3; two symmetrically arranged telescopic rods 7 are fixedly connected to the centrifugal fan 2; the telescopic ends of all the telescopic rods 7 are commonly fixedly connected to the first filter screen 4; six annular array baffles 8 are rotatably connected to the connecting frame 3; a torsion spring is provided at the connection between each baffle 8 and the connecting frame 3; the connecting frame 3 is connected to six annular array second filters 10.

[0028] The first filter screen 4 and the slider 5 are arranged in a quick-release structure, so as to facilitate quick replacement and deep cleaning of the first filter screen 4 .

[0029] The telescopic rod 7 is equipped with a self-locking system for limiting the telescopic end of the telescopic rod 7, so that the first filter screen 4 is more stable.

[0030] The telescopic rod 7 is equipped with a pressure switch for controlling the operation of the limiter 9 to limit the baffle 8.

[0031] The telescopic rod 7 is equipped with an alarm to remind the staff.

[0032] The connection frame 3 and the second filter screen 10 are arranged in a quick-release structure, so as to facilitate quick replacement and deep cleaning of the second filter screen 10 .

[0033] First, the staff installs the environmental dust removal centrifugal fan to the position where it is needed, and then controls the operation of the centrifugal fan 2. During operation, the airflow will enter the air inlet of the centrifugal fan 2 through the connecting frame 3, and then be discharged through the exhaust port on the centrifugal fan 2. In this process, the dust in the airflow is intercepted by the first filter 4. As the running time of the centrifugal fan 2 increases, the dust intercepted on the first filter 4 increases synchronously. As the dust intercepted on the first filter 4 increases, the flow of the airflow will be affected, resulting in a decrease in the exhaust port and the discharged airflow. In the prior art, the method of stopping the machine to clean the first filter 4 is adopted to ensure that the centrifugal fan 2 can work normally in the future. However, during the cleaning process, the centrifugal fan 2 cannot work, which affects the ventilation efficiency. When a large amount of dust is intercepted on the first filter screen 4, the suction force generated during the operation of the centrifugal fan 2 will drive the first filter screen 4 to move in the direction of the centrifugal fan 2, and then the first filter screen 4 drives the slider 5 to slide in the slide groove 3001, and compresses the corresponding elastic member 6 at the same time. At the same time, the first filter screen 4 compresses the telescopic rod 7 to shrink the telescopic rod 7, and then the telescopic rod 7 triggers its built-in pressure switch. Since the pressure switch controls the switch of the limiter 9, the limiter 9 is forced to shrink, causing the baffle 8 to lose its limit. At this time, the airflow can pass through the first filter screen 4 and enter the centrifugal fan 2, which will be affected by the dust intercepted on the first filter screen 4. That is, under the action of the suction force of the centrifugal fan 2, the baffle 8 is forced to rotate with the rotating shaft connected to the connecting frame 3 as the rotation center, and at the same time, the baffle 8 is squeezed to The torsion spring at the connection of the connecting frame 3, that is, part of the airflow passes through the second filter screen 10 into the connecting frame 3, and then enters the centrifugal fan 2 and is finally discharged through the exhaust port thereon. At the same time, the telescopic rod 7 is contracted and the built-in alarm is triggered to remind the staff to clean the first filter screen 4. Then the staff uses a cleaning tool to clean the dust intercepted on the first filter screen 4. When the cleaning work is completed, the telescopic rod 7 is locked by its built-in self-locking system at this time, and the telescopic rod 7 cannot be extended or retracted. Moreover, since the dust on the first filter screen 4 is cleaned, the airflow can flow smoothly through the first filter screen 4, that is, the baffle 8 is reset under the action of the torsion spring, and then the staff releases the built-in self-locking system of the telescopic rod 7 to restore the telescopic function of the telescopic rod 7, that is, the built-in pressure switch of the telescopic rod 7 fails. The limit is removed, and then the compressed elastic member 6 pushes the slider 5 to reset, and at the same time the slider 5 drives the first filter screen 4 to reset, that is, the limiter 9 resets to limit the baffle 8, and then the staff uses the cleaning tool to clean the dust attached to the second filter screen 10 again to ensure that the second filter screen 10 can work normally in the future and will not affect the air flow. That is, the centrifugal fan 2 is ensured to keep working during the dust cleaning process through the above method to avoid the first filter screen 4 being damaged due to the staff not cleaning the dust on the first filter screen 4 in time. It should be noted that more dust accumulates on the first filter screen 4. If it is not cleaned in time, the dust will squeeze the first filter screen 4 under the suction of the centrifugal fan 2, thereby causing the first filter screen 4 to be damaged, and in severe cases, the first filter screen 4 may be damaged.This causes dust and impurities to enter the centrifugal fan 2, that is, the dust and impurities collide with the blades of the centrifugal fan 2, causing the blades of the centrifugal fan 2 to be damaged. That is, the above method can not only ensure that the first filter 4 is not damaged during the dust cleaning process, but also further improve the service life of the device.

[0034] Example 2

[0035] On the basis of the above-mentioned embodiment 1, Figure 6-Figure 7 As shown, a cleaning component is also included, which includes a connecting shaft 101, a brush plate 102, a connecting plate 103, a telescopic cloth 104 and a sealing plate 105; the connecting shaft 101 is fixedly connected to the fan blades of the centrifugal fan 2; six equidistantly distributed brush plates 102 are fixedly connected to the connecting shaft 101; two symmetrically arranged connecting plates 103 are fixedly connected to the first filter screen 4; each connecting plate 103 is fixedly connected to a telescopic cloth 104; the other ends of all the telescopic cloths 104 are fixedly connected to the connecting frame 3, and a sealing plate 105 is fixedly connected to the first filter screen 4.

[0036] The connection frame 3 is provided with two symmetrically arranged sewage outlets 3002 for discharging the dust cleaned from the first filter screen 4 .

[0037] A rubber ring 10501 is provided on the sealing plate 105 to fit the connection frame 3 and enhance the sealing effect.

[0038] The blocking plate 105 is conveniently provided with a wedge-shaped structure, which is used to guide larger dust in the liquid airflow to reduce adhesion to the first filter screen 4 .

[0039] First, the staff installs an external waste barrel under the connecting frame 3. When too much dust accumulates on the first filter screen 4, under the action of the suction force of the centrifugal fan 2, the first filter screen 4 is forced to drive the slider 5 to slide on the slide groove 3001 toward the centrifugal fan 2. At the same time, the first filter screen 4 is close to the brush plate 102, and the first filter screen 4 drives the connecting plate 103 to slide on the sewage outlet 3002. At the same time, the telescopic cloth 104 shrinks, and at the same time, the first filter screen 4 drives the blocking plate 105 to approach and contact the connecting frame 3, so that the rubber ring 10501 is tightly attached to the connecting frame 3, and then the bristles on the brush plate 102 pass through the filter holes on the first filter screen 4, that is, the dust on the first filter screen 4 is first cleaned by the bristles on the brush plate 102, and at the same time, the fan blades of the centrifugal fan 2 drive the connecting shaft 101 to rotate, and the connecting shaft 101 drives the brush plate 102 to clean the dust on the first filter screen 4, and at the same time, the connecting frame 3 is blocked by the blocking plate 105. At this time, the airflow only passes through the second filter screen 10 Entering the connecting frame 3, that is, the airflow will not enter the connecting frame 3 through the first filter 4. At this time, the dust on the first filter 4 will not be affected by the airflow and adsorbed on the first filter 4, so that the cleaned dust is discharged through the sewage outlet 3002, that is, the dust on the first filter 4 is automatically cleaned in this way, and at the same time, the sealing plate 105 blocks part of the dust through it after being reset to reduce the amount of dust attached to the first filter 4. The above method can not only realize the automatic cleaning of the first filter 4, but also because the first filter 4 will not be in contact with the brush plate 102 for a long time during the daily operation of the equipment, and the bristles and the first filter 4 will not be in contact and rubbed for a long time, which further reduces the risk of the first filter 4 being damaged by friction. It should be noted that in the prior art, the first filter 4 of the centrifugal fan 2 will also be provided with a self-cleaning mechanism. Because the prior art usually maintains long-term contact and friction, that is, the first filter 4 is more easily damaged, and the cleaning equipment will block the entry of the airflow.

[0040] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, all equivalent changes made to the contents described in the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. An environmentally friendly dust removal centrifugal fan, comprising a mounting frame (1), a centrifugal fan (2) and a connecting frame (3); the mounting frame (1) is fixedly connected to the centrifugal fan (2); the connecting frame (3) is connected to the centrifugal fan (2), and the connecting frame (3) is connected to the air inlet of the centrifugal fan (2); a plurality of slide grooves (3001) are provided inside the connecting frame (3); the characteristic is that: The invention also comprises a first filter screen (4), a slider (5), an elastic member (6), a telescopic rod (7), a baffle (8), a stopper (9) and a second filter screen (10); each slide groove (3001) of the connection frame (3) is slidably connected to a slider (5); all the sliders (5) are commonly connected to the first filter screen (4); each slider (5) is fixedly connected to an elastic member (6); all the elastic members (6) are commonly fixedly connected to the connection frame (3); a plurality of telescopic rods (7) are fixedly connected to the centrifugal fan (2); the telescopic ends of all the telescopic rods (7) are commonly fixedly connected to the first filter screen (4); a plurality of baffles (8) are rotatably connected to the connection frame (3); a torsion spring is provided at the connection between each baffle (8) and the connection frame (3); and a plurality of second filter screens (10) are connected to the connection frame (3).

2. The environmentally friendly dust removal centrifugal fan according to claim 1 is characterized in that: The first filter screen (4) and the slider (5) are arranged in a quick-release structure.

3. The environmentally friendly dust removal centrifugal fan according to claim 1 is characterized in that: The telescopic rod (7) is equipped with a self-locking system.

4. The environmentally friendly dust removal centrifugal fan according to claim 1 is characterized in that: The telescopic rod (7) is equipped with a pressure switch.

5. The environmentally friendly dust removal centrifugal fan according to claim 1 is characterized in that: The telescopic rod (7) is equipped with an alarm device.

6. The environmentally friendly dust removal centrifugal fan according to claim 1 is characterized in that: The connection frame (3) and the second filter screen (10) are arranged in a quick-release structure.

7. The environmentally friendly dust removal centrifugal fan according to claim 1 is characterized in that: The invention also comprises a cleaning assembly, which comprises a connecting shaft (101), a brush plate (102), a connecting plate (103), a telescopic cloth (104) and a blocking plate (105); the connecting shaft (101) is fixedly connected to the fan blades of the centrifugal fan (2); a plurality of brush plates (102) are fixedly connected to the connecting shaft (101); a plurality of connecting plates (103) are fixedly connected to the first filter screen (4); a telescopic cloth (104) is fixedly connected to each connecting plate (103); the other ends of all the telescopic cloths (104) are fixedly connected to the connecting frame (3), and a blocking plate (105) is fixedly connected to the first filter screen (4).

8. The environmentally friendly dust removal centrifugal fan according to claim 7 is characterized in that: The connection frame (3) is provided with a plurality of sewage outlets (3002).

9. The environmentally friendly dust removal centrifugal fan according to claim 7, characterized in that: A rubber ring (10501) is provided on the sealing plate (105).

10. The environmentally friendly dust removal centrifugal fan according to claim 7, characterized in that: The blocking plate (105) is conveniently provided with a wedge-shaped structure.

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