Centrifugal fan capable of avoiding corrosion and imbalance

Abstract

The present application relates to centrifugal fan technical field, disclose a kind of centrifugal fan that can avoid corrosion and imbalance, including shell, shell bottom is fixedly connected with support frame, shell top is fixedly connected with gas outlet pipeline, a large amount of dust or particulate matter in waste gas is blocked down by filter plate one, then four scrapers are rotated by rotating column, and dust or particulate matter on filter plate one is cleaned by cleaning brush fixedly connected thereon, dust or particulate matter cleaned can be guided to the outer edge of air inlet pipe, in turn effectively avoid a large amount of dust or particulate matter in waste gas is adsorbed on filter plate one and leads to the situation that filter plate one is blocked, to facilitate the normal operation of shell, can improve the working efficiency of shell, while preventing a large amount of dust or particulate matter contained in waste gas from entering shell interior and leading to the situation that impeller in shell is worn, to reduce the additional load borne by equipment, increase the service life of equipment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of centrifugal fan, in particular to a centrifugal fan capable of avoiding rust and imbalance. BACKGROUND

[0002] The centrifugal fan is a kind of machinery that improves the pressure of gas and discharges gas by inputting mechanical energy, and it is a driven fluid machinery. The centrifugal fan is widely used in ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings, ventilation and air induction of boilers and industrial furnaces, cooling and ventilation in air conditioning equipment and household appliances, grain drying and selection, wind tunnel air source and air cushion ship inflation and propulsion, etc.

[0003] The existing centrifugal fan is used for factory production work. Since a large amount of dust or particulate matter is generated in the production process of the factory, a centrifugal fan is usually used for waste gas treatment project. In the case of high-speed operation of the impeller, a large amount of dust or particulate matter contained in the waste gas may cause wear of the centrifugal fan impeller, and thus the impeller is out of balance and cannot operate normally. Meanwhile, the rotation axis of the out-of-balance impeller may deviate, thereby increasing the additional load borne by the equipment, causing the impeller, bearing and seal and other components to be in an overload state, and thus shortening the service life of the equipment.

[0004] In addition, the existing centrifugal fan cannot collect a large amount of dust in the waste gas when used for factory production work. Not only does this cause the dust in the waste gas to wear the centrifugal fan impeller, but also it may cause excessive accumulation of dust in the workshop or production environment, affecting the vision and operation environment of the workers, negatively affecting human health, and increasing the risk of accidents and fires.

[0005] Therefore, we propose a centrifugal fan capable of preventing dust from wearing the centrifugal fan impeller and capable of collecting dust, which can avoid rust and imbalance. SUMMARY

[0006] (I) Technical problems solved

[0007] Therefore, in view of the deficiencies in the prior art, the present application provides a centrifugal fan capable of avoiding rust and imbalance to solve the problems raised in the background.

[0008] (II) Technical solutions

[0009] In order to achieve the above object, the present application provides the following technical scheme: A centrifugal fan capable of avoiding rust and imbalance, comprising a shell, a support frame fixedly connected to the bottom of the shell, an air outlet pipeline fixedly connected to the top of the shell, a transmission component fixedly connected to the outer wall of one side of the shell, a rotating column fixedly connected to the end of the transmission component close to the air outlet pipeline, an air inlet pipeline fixedly connected to the outer wall of the other side of the shell, a filter plate one fixedly connected to the inner surface of the air inlet pipeline, a scraper fixedly connected to the end of the rotating column penetrating through the filter plate one, a cleaning brush fixedly connected to the end of the scraper close to the filter plate one, the cleaning brush being in abutment with the filter plate one, an inclined plate fixedly connected to one side of the scraper, a purification mechanism for absorbing strong acid and alkaline substances uniformly arranged on the inner surface of the air inlet pipeline, a filter box fixedly connected to the outer surface of the air inlet pipeline, the filter box being located directly below the air inlet pipeline, a vibration mechanism for cleaning dust arranged in the filter box, and a driving mechanism for linking the vibration mechanism arranged in the filter box.

[0010] Preferably, the driving mechanism comprises a transmission rod one, the transmission rod one being rotatably connected in the filter box, a transmission impeller fixedly connected to the middle of the outer surface of the transmission rod one, mounting columns fixedly connected to the two sides of the outer surface of the transmission rod one, and protrusions fixedly connected to the outer surfaces of the mounting columns at equal intervals.

[0011] Preferably, trapezoidal cone plates are fixedly connected between the inner surfaces of the filter box, the trapezoidal cone plates being located directly above the transmission impeller, and a filter plate two is fixedly connected to the outer side wall of the filter box away from the shell.

[0012] Preferably, an air pipe is fixedly connected to the outer surface of the air inlet pipeline at one end, and a one-way valve is fixedly connected to the outer surface of the air inlet pipeline.

[0013] Preferably, the vibration mechanism comprises a transmission rod two, the transmission rod two being rotatably connected in the filter box, knocking rods fixedly connected to the two sides of the outer surface of the transmission rod two, rubber balls fixedly connected to the bottom ends of the knocking rods, and the knocking rods being adapted to the protrusions at the top ends.

[0014] Preferably, torsion springs are fixedly connected between the knocking rods and the opposite surfaces of the filter box, and the torsion springs are sleeved on the outer surface of the transmission rod two.

[0015] Preferably, the purification mechanism comprises arc-shaped baffles, the arc-shaped baffles being fixedly connected to the inner surface of the air inlet pipeline at equal intervals, and the arc-shaped baffles away from the shell being filled with activated carbon at equal intervals.

[0016] Preferably, the arc-shaped baffles are symmetrically distributed around the rotating column, the arc-shaped baffles are in inclined structures, and the ends of the arc-shaped baffles away from the shell are close to each other.

[0017] Preferably, the filter box bottom is fixedly connected with a dust collection box, one end away from the shell of the dust collection box is rotatably connected with a box door, and one side away from the shell of the box door is fixedly connected with a door handle.

[0018] (Three) beneficial effects

[0019] Compared with the prior art, the centrifugal fan provided by the application can avoid rust and imbalance and has the following beneficial effects:

[0020] 1. The large amount of dust or particulate matter in the exhaust gas is blocked by the filter plate one, and then the four scrapers are driven to rotate by the rotating column, and the dust or particulate matter adsorbed on the filter plate one is swept by the cleaning brush fixedly connected to the scraper, which can guide the swept dust or particulate matter to the outer edge of the air inlet pipe, thereby effectively avoiding the situation that the large amount of dust or particulate matter in the exhaust gas is adsorbed on the filter plate one, causing the filter plate one to be blocked, thereby facilitating the normal operation of the shell, improving the working efficiency of the shell, effectively preventing the large amount of dust or particulate matter in the exhaust gas from entering the interior of the shell, causing the impeller in the interior of the shell to be worn, thereby reducing the additional load borne by the equipment and effectively prolonging the service life of the equipment.

[0021] 2. The dust is blown off onto the trapezoidal cone plate by the rapidly flowing exhaust gas, and the rotation of the transmission impeller on one side is driven, and the rubber ball at the bottom end of the knocking rod continuously hits the inner wall of the filter box, thereby realizing vibration of the filter plate, so that the large amount of dust adsorbed on the filter plate two continues to fall into the interior of the dust collection box, thereby realizing concentrated collection and treatment of the large amount of dust in the exhaust gas, avoiding the situation that the large amount of dust in the exhaust gas cannot be concentratedly collected, causing the impeller in the shell to be worn, and also reducing the accumulation of dust in the workshop or production environment, thereby not affecting the vision and operation environment of the workers, reducing the negative impact on human health, and reducing the probability of accidents and fires.

[0022] 3. The arc-shaped baffle is arranged to disperse the exhaust gas, so that the exhaust gas forms a vortex, thereby reducing the flow rate of the exhaust gas, increasing the time for the exhaust gas to stay in front of the four arc-shaped baffles, and promoting the strong acid-base substances in the exhaust gas to fully contact and be fully absorbed by the activated carbon, thereby effectively preventing the strong acid-base substances from entering the interior of the shell, reducing the corrosion and damage of the strong acid-base substances to the interior of the shell, and prolonging the service life, thereby helping to maintain the normal operation of the centrifugal fan and improving the working efficiency thereof. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the application;

[0024] Figure 2 It is a schematic diagram of the structure of the air outlet pipe in the application;

[0025] Figure 3 The sectional structure schematic diagram of the air inlet pipeline in the application;

[0026] Figure 4 The sectional structure schematic diagram of the filter plate one in the application;

[0027] Figure 5 The sectional structure schematic diagram of the filter box in the application;

[0028] Figure 6 The local structure enlarged view of the filter plate two in the application;

[0029] Figure 7 The local structure enlarged view of the transmission impeller in the application;

[0030] Figure 8 The sectional structure schematic diagram of the filter box in the application; Figure 7 The sectional structure schematic diagram of the filter box in the application;

[0031] In the drawings, the component list represented by each sign is as follows:

[0032] 1, the shell; 101, the air outlet pipeline; 102, the air inlet pipeline; 103, the support frame; 104, the rotating column; 2, the transmission component; 3, the arc-shaped baffle; 4, the activated carbon; 5, the dust collection box; 501, the box door; 502, the door handle; 6, the scraper; 601, the cleaning brush; 602, the inclined plate; 7, the filter plate one; 8, the air pipe; 9, the one-way valve; 10, the filter box; 1001, the trapezoidal tapered plate; 1002, the filter plate two; 11, the transmission rod one; 1101, the transmission impeller; 1102, the mounting column; 1103, the protruding block; 12, the transmission rod two; 1201, the knocking rod; 1202, the rubber ball; 1203, the torsion spring. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the application will be apparently and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all the other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the application.

[0034] The application will be further described in detail below according to the drawings and embodiments.

[0035] EMBODIMENT

[0036] Please refer to Figure 3 and Figure 4As shown, a centrifugal fan designed to prevent corrosion and imbalance includes a housing 1. A support frame 103 is fixedly connected to the bottom of the housing 1, and an air outlet pipe 101 is fixedly connected to the top of the housing 1. A transmission component 2 is fixedly connected to one outer wall of the housing 1, and a rotating column 104 is fixedly connected to one end of the transmission component 2 near the air outlet pipe 101. An air inlet pipe 102 is fixedly connected to the other outer wall of the housing 1, and a filter plate 7 is fixedly connected to the inner surface of the air inlet pipe 102. Scrapers 6 are fixedly connected to one end of the rotating column 104 that passes through the filter plate 7. Cleaning brushes 601 are fixedly connected to one end of the filter plate 7. The cleaning brushes 601 are all in contact with the filter plate 7. An inclined plate 602 is fixedly connected to one side of the scraper 6. A purification mechanism for absorbing strong acid and alkaline substances is uniformly arranged on the inner surface of the air intake pipe 102. A filter box 10 is fixedly connected to the outer surface of the air intake pipe 102. The filter box 10 is located directly below the air intake pipe 102. A vibration mechanism for cleaning dust is arranged inside the filter box 10. A drive mechanism for linking the vibration mechanism is arranged inside the filter box 10.

[0037] The effects achieved by the above embodiments are as follows: When the impeller is running at high speed, a large amount of dust or particulate matter in the exhaust gas may cause wear on the centrifugal fan impeller, which may lead to impeller imbalance and failure to operate normally. Compared with the prior art, this design can effectively avoid the situation where a large amount of dust or particulate matter in the exhaust gas is adsorbed on the filter plate 7, causing the filter plate 7 to become clogged. This is conducive to the normal operation of the housing 1, improves the working efficiency of the housing 1, and effectively prevents a large amount of dust or particulate matter in the exhaust gas from entering the interior of the housing 1 and causing wear on the impeller inside the housing 1. This reduces the extra load on the equipment and effectively extends the service life of the equipment.

[0038] Further embodiments

[0039] Please see Figure 1 , Figure 5 , Figure 6 , Figure 7 as well as Figure 8 As shown, a centrifugal fan that can avoid corrosion and imbalance includes a drive mechanism. The drive mechanism includes a transmission rod 11, which is rotatably connected inside the filter box 10. A transmission impeller 1101 is fixedly connected to the middle of the outer surface of the transmission rod 11. Mounting columns 1102 are fixedly connected to both sides of the outer surface of the transmission rod 11. Protrusions 1103 are fixedly connected at equal intervals on the outer surface of the mounting columns 1102.

[0040] A trapezoidal cone plate 1001 is fixedly connected between the inner surfaces of the filter box 10. The trapezoidal cone plate 1001 is located directly above the transmission impeller 1101. A filter plate 1002 is fixedly connected to the outer wall of the filter box 10 away from the shell 1.

[0041] The air vent pipe 8 is fixedly connected to the outer side wall of the shell 1 away from the filter box 10, one end of the air vent pipe 8 is fixedly connected to the outer surface of the air inlet pipe 102, and the outer surface of the air inlet pipe 102 is fixedly connected with a one-way valve 9;

[0042] The vibration mechanism comprises a transmission rod two 12, which is rotationally connected inside the filter box 10, and a knocking rod 1201 is fixedly connected to the outer surface of the transmission rod two 12 on both sides, and a rubber ball 1202 is fixedly connected to the bottom end of the knocking rod 1201, and the top end of the knocking rod 1201 is adapted to the protrusion 1103;

[0043] A torsion spring 1203 is fixedly connected between the knocking rod 1201 and the opposite surface of the filter box 10, and the torsion spring 1203 is sleeved on the outer surface of the transmission rod two 12;

[0044] The bottom of the filter box 10 is fixedly connected with a dust collecting box 5, and the dust collecting box 5 is rotationally connected with a box door 501 away from the shell 1, and the box door 501 is fixedly connected with a door handle 502 away from the shell 1.

[0045] The effect achieved by the above embodiment is that, since the centrifugal fan cannot collect a large amount of dust in the waste gas during factory production, the dust in the waste gas wears the impeller of the centrifugal fan, which causes the dust in the workshop or production environment to accumulate too much, affecting the vision and operating environment of the workers. Compared with the prior art, the design can realize the centralized collection and treatment of a large amount of dust in the waste gas, avoid the wear of the impeller in the shell 1 caused by the failure of the centralized collection of a large amount of dust in the waste gas, and reduce the dust accumulation in the workshop or production environment, thereby not affecting the vision and operating environment of the workers, reducing the negative impact on human health, and reducing the probability of accidents and fires.

[0046] Further embodiments

[0047] Please refer to Figure 1 , Figure 3 and Figure 4 , a centrifugal fan that can avoid rust and imbalance comprises a purification mechanism, the purification mechanism comprises arc-shaped baffles 3, the arc-shaped baffles 3 are fixedly connected to the inner surface of the air inlet pipe 102 at equal intervals, and the side of the arc-shaped baffles 3 away from the shell 1 is filled with activated carbon 4 at equal intervals;

[0048] The arc-shaped baffles 3 are symmetrically distributed around the rotating column 104, the arc-shaped baffles 3 are all in an inclined structure, and the ends of the arc-shaped baffles 3 away from the shell 1 are close to each other;

[0049] The effect achieved by the above embodiment is that the strong acid and alkali substances are effectively prevented from entering the inside of the shell 1, the corrosion and damage to the inside of the shell 1 are reduced, and the service life is prolonged, thereby helping to maintain the normal operation of the centrifugal fan and improving the working efficiency.

[0050] The working principle of the present application is:

[0051] In the initial state, the support frame 103 is installed on a flat ground or wall surface, the air inlet pipe 102 is installed on the exhaust pipe to be treated, the transmission component 2 is in a static state without being started, the scraper 6 on the rotating column 104 is also in a static state without being driven by external force, the transmission impeller 1101 is in a static state without being affected by external force, and then the protrusion 1103 on the mounting column 1102 is in a static state without being driven by external force. At this time, the cam is in contact with the knocking rod 1201, the torsion spring 1203 is in a normal state without being affected by external force, the rubber ball 1202 is not in contact with the inner wall of the filter box 10, and the box door 501 is in a closed state.

[0052] When the centrifugal fan is used for production work in a factory, the staff first starts the transmission component 2 to make the shell 1 start working and gradually suck in the exhaust gas to be treated from the air inlet pipe 102. When the exhaust gas enters the air inlet pipe 102, the exhaust gas is dispersed by the arc-shaped baffle 3 arranged inside the air inlet pipe 102. With the increase of the area, the pressure and speed gradually decrease. After the exhaust gas continues to move for a distance, backflow occurs, which causes the formation of vortex flow, the loss of flow velocity kinetic energy, and the decrease of the flow velocity of the exhaust gas. This makes the exhaust gas stay in front of the four arc-shaped baffles 3 for a longer time, which promotes the strong acid and alkali substances in the exhaust gas to fully contact and be fully absorbed by the activated carbon 4. This effectively prevents the strong acid and alkali substances from entering the inside of the shell 1, reduces the corrosion and damage of the strong acid and alkali substances to the inside of the shell 1, prolongs the service life, and thus helps to maintain the normal operation of the centrifugal fan and improve its working efficiency.

[0053] After the exhaust gas passes through the four arc-shaped baffles 3, the exhaust gas passes through the filter plate one 7, and a large amount of dust or particulate matter in the exhaust gas is blocked on the side wall of the filter plate one 7. Then the transmission component 2 drives the rotating column 104 to rotate, and the rotating column 104 drives the four fixedly connected scrapers 6 thereon to rotate and clean the dust or particulate matter adsorbed on the filter plate one 7 through the cleaning brush 601 fixedly connected thereto. Then the inclined plate 602 on the scraper 6 sweeps the dust or particulate matter to the pipe opening of the air inlet pipe 102, thereby effectively avoiding the large amount of dust or particulate matter in the exhaust gas from being adsorbed on the filter plate one 7, which causes the filter plate one 7 to be blocked, thereby facilitating the normal operation of the shell 1, improving the working efficiency of the shell 1, and effectively preventing a large amount of dust or particulate matter in the exhaust gas from entering the inside of the shell 1 to cause the impeller inside the shell 1 to be worn, thereby reducing the additional load borne by the equipment and effectively prolonging the service life of the equipment.

[0054] When the filter plate one 7 blocks a large amount of dust or particulate matter contained in the exhaust gas, the dust or particulate matter falls into the filter box 10 under the pushing action of the rapidly flowing exhaust gas, and then the exhaust gas carrying the dust or particulate matter falls onto the trapezoidal tapered plate 1001, and then due to the tapered design of the trapezoidal tapered plate 1001, the exhaust gas and dust continue to fall along the inclined surface of the trapezoidal tapered plate 1001, and at the same time, due to the reduction of the passing area, the flow rate of the exhaust gas gradually increases. At this time, the exhaust gas with increased flow rate pushes one side of the transmission impeller 1101, and promotes the transmission impeller 1101 to rotate around the transmission rod one 11, thereby driving the transmission rod one 11 to rotate, and then the transmission rod one 11 drives the mounting column 1102 at both ends to rotate, and promotes the protruding block 1103 to rotate, thereby the protruding block 1103 continuously presses and strikes the knocking rod 1201, so that the knocking rod 1201 rotates along the transmission rod two 12 and compresses the torsion spring 1203 to gradually contract. Then the rubber ball 1202 at the bottom end of the knocking rod 1201 continuously hits the inner wall of the filter box 10, thereby achieving the vibration effect of the filter plate two 1002 on the filter box 10, so that a large amount of dust adsorbed on the filter plate two 1002 continues to fall into the dust collecting box 5, thereby realizing the centralized collection and treatment of a large amount of dust in the exhaust gas, avoiding the fact that a large amount of dust in the exhaust gas cannot be collected and concentrated, which causes the impeller in the shell 1 to be worn, and also reduces the accumulation of dust in the workshop or production environment, thereby not affecting the vision and operating environment of the workers, thereby reducing the negative impact on human health and reducing the probability of accidents and fires.

[0055] The filtered exhaust gas passes through the filter plate two 1002 and reenters the intake duct 102 through the breather pipe 8, thereby being able to continue the exhaust gas discharge treatment work, and at the same time, the untreated exhaust gas cannot enter the filter box 10 through the breather pipe 8 in the reverse direction by the one-way valve 9 arranged on the breather pipe 8, avoiding the fact that a large amount of dust in the exhaust gas adheres to the filter plate one 7 and strong acid and alkaline substances directly enter the shell 1, which causes the components in the shell 1 to be corroded and damaged.

[0056] Although embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A centrifugal fan which can avoid rust and imbalance, comprising a casing (1), characterized in that: The bottom of the shell (1) is fixedly connected with a support frame (103), the top of the shell (1) is fixedly connected with an air outlet pipeline (101), one side of the outer wall of the shell (1) is fixedly connected with a transmission component (2), one end of the transmission component (2) close to the air outlet pipeline (101) is fixedly connected with a rotating column (104), the other side of the outer wall of the shell (1) is fixedly connected with an air inlet pipeline (102), the inner surface of the air inlet pipeline (102) is fixedly connected with a filter plate one (7), one end of the rotating column (104) penetrating through the filter plate one (7) is fixedly connected with a scraper (6), one end of the scraper (6) close to the filter plate one (7) is fixedly connected with a cleaning brush (601), the cleaning brush (601) is in close contact with the filter plate one (7), one side of the scraper (6) is fixedly connected with an inclined plate (602), the inner surface of the air inlet pipeline (102) is uniformly provided with a purification mechanism for absorbing strong acid and alkaline substances, the outer surface of the air inlet pipeline (102) is fixedly connected with a filter box (10), the filter box (10) is located directly below the air inlet pipeline (102), the inside of the filter box (10) is provided with a vibration mechanism for cleaning dust, and the inside of the filter box (10) is provided with a driving mechanism for linking the vibration mechanism. The driving mechanism comprises a transmission rod one (11), the transmission rod one (11) is rotatably connected in the inside of the filter box (10), the outer surface of the transmission rod one (11) is fixedly connected with a transmission impeller (1101) in the middle, and the outer surface of the transmission rod one (11) is fixedly connected with a mounting column (1102) on both sides. The vibration mechanism comprises a transmission rod two (12), the transmission rod two (12) is rotatably connected in the inside of the filter box (10), the outer surface of the transmission rod two (12) is fixedly connected with a knocking rod (1201) on both sides, the bottom end of the knocking rod (1201) is fixedly connected with a rubber ball (1202), and the top end of the knocking rod (1201) is matched with the protruding block (1103). The purification mechanism comprises arc-shaped baffles (3), the arc-shaped baffles (3) are fixedly connected on the inner surface of the air inlet pipeline (102) at equal intervals, and the side, away from the shell (1), of the arc-shaped baffle (3) is filled with activated carbon (4) at equal intervals. The arc-shaped baffles (3) are symmetrically distributed with the rotating column (104) as the center, the arc-shaped baffles (3) all have an inclined structure, and the ends, away from the shell (1), of the arc-shaped baffles (3) are close to each other.

2. The corrosion and imbalance avoidable centrifugal fan according to claim 1, characterized in that: The inner surface of the filter box (10) is fixedly connected with a trapezoidal taper plate (1001), the trapezoidal taper plate (1001) is located directly above the transmission impeller (1101), and the outer side wall, away from the shell (1), of the filter box (10) is fixedly connected with a filter plate two (1002).

3. The corrosion and imbalance avoidable centrifugal fan according to claim 1, characterized in that: The filter box (10) is fixedly connected with a vent pipe (8) away from the outer side wall of the shell (1), one end of the vent pipe (8) is fixedly connected to the outer surface of the air inlet pipeline (102), and the outer surface of the air inlet pipeline (102) is fixedly connected with a one-way valve (9).

4. The corrosion and imbalance avoidable centrifugal fan according to claim 1, characterized in that: The opposite surfaces of the knocking rod (1201) and the filter box (10) are fixedly connected with torsion springs (1203), and the torsion springs (1203) are sleeved on the outer surfaces of the second transmission rods (12).

5. The corrosion and imbalance avoidable centrifugal fan according to claim 1, characterized in that: The bottom of the filter box (10) is fixedly connected with a dust collecting box (5), one end of the dust collecting box (5) away from the shell (1) is rotatably connected with a box door (501), and one side of the box door (501) away from the shell (1) is fixedly connected with a door handle (502).

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