Efficient energy-saving type permanent magnet frequency conversion centrifugal fan

Abstract

The invention relates to the technical field of fans, in particular to an efficient and energy-saving type permanent magnet frequency conversion centrifugal fan which comprises a volute, and the volute comprises a fan mounting mechanism, a transmission mechanism and a filtering mechanism. Wherein the filtering mechanism comprises a filtering and cleaning assembly and an air inlet pipe, the air inlet pipe is fixed to the volute, a filtering plate is fixed in the air inlet pipe, and a leakage opening located at the filtering plate is formed in the lower end of the air inlet pipe. Through the arrangement of the through hole check block, the fixed check block and the through hole block, when the gear drives the square frame block to reciprocate through the insertion rod, the square frame block drives the through hole block to reciprocate through the annular block and the movable check block, and then when the movable check block thoroughly seals an opening of the through hole check block, the through hole block is blocked. At the moment, the through hole block can be separated from the sealing of the fixed check block and the through hole check block, so that dust in the through hole block can be discharged through an opening of the through hole block, the purpose of automatically discharging dust is achieved, and then the device can automatically discharge dust during operation.

Description

Technical Field

[0001] The invention relates to the field of fans, and in particular to a high-efficiency energy-saving permanent magnet variable frequency centrifugal fan. Background Art

[0002] Centrifugal fans are machines that rely on input mechanical energy to increase gas pressure and transport gas. Centrifugal fans are 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.

[0003] In the prior art, the name disclosed in the application number: CN201910464205.8 is: a high-efficiency and energy-saving centrifugal fan specially used for cement production, which includes a frame, a volute, a dust-proof component, a cleaning component, a detection component, a drive component and a rotating component. The volute is fixed on the top of the frame, the dust-proof component is arranged on the front side wall of the volute, the cleaning component is arranged on the top of the volute, and the drive component is transmission-connected with the rotating component. The top of the volute is provided with a through hole for the front end of the cleaning component to pass through, and the top of the volute is provided with a pulling component for controlling the closing and opening of the through hole. A controller is provided on the outer wall of the cleaning component, and the cleaning component, the detection component and the drive component are all electrically connected to the controller. The present invention can reduce the overall failure rate and save energy consumption; and by utilizing the design of the filter mesh cover, it can be achieved that the whole is not in use. Effectively prevent dust from entering, thereby improving the overall service life.

[0004] However, in the prior art, although the centrifugal fan mentioned in the application number CN201910464205.8 can effectively prevent dust from entering during actual use with a filter cover, it lacks a good dust removal mechanism, so that dust will accumulate on the filter cover and affect normal use, so it needs to be improved. Summary of the invention

[0005] The object of the present invention is to provide a high-efficiency and energy-saving permanent magnet variable frequency centrifugal fan to solve the problems raised in the above background technology.

[0006] The object of the present invention can be achieved by the following technical solutions: A high-efficiency and energy-saving permanent magnet variable frequency centrifugal fan, comprising a volute, wherein the volute comprises a fan mounting mechanism, a transmission mechanism and a filtering mechanism;

[0007] Among them, the filtering mechanism includes a filtering and cleaning component and an air intake pipe, the air intake pipe is fixed on the volute, a filter plate is fixed inside the air intake pipe, a leakage port located at the filter plate is opened inside the lower end of the air intake pipe, a through-hole block located below the leakage port is fixed at the bottom of the air intake pipe, a through-hole block is movably connected to the bottom of the through-hole block, a movable block transmission-connected to the filtering and cleaning component is fixed on the side of the through-hole block, and a fixed block fixed on the air intake pipe is movably connected to the bottom of the through-hole block.

[0008] Preferably, the fan installation mechanism includes a fixed communication component and a fan installation component;

[0009] The fan installation assembly includes a permanent magnet impeller motor fixed on the volute, a mounting frame is fixed on the permanent magnet impeller motor, and mounting holes are symmetrically opened inside the lower end of the mounting frame.

[0010] Preferably, the fixed communication component comprises a first flange block and a second flange block, the first flange block is fixed to the upper end of the volute, and the second flange block is fixed to the end of the air inlet pipe.

[0011] Preferably, the filter cleaning assembly includes a rotating cleaning assembly, a reciprocating assembly, a driving assembly and a limiting assembly;

[0012] The rotary cleaning assembly comprises a socket opened inside the air inlet pipe, the internal movable sleeve of the socket is provided with a gear ring which is transmission-connected to the driving assembly, a plug rod is fixed inside the gear ring, and one end of the plug rod is in contact with the filter plate.

[0013] Preferably, the limiting assembly comprises a side opening opened inside the air intake pipe, and a circular ring fixed to the gear ring is movably sleeved inside the side opening.

[0014] Preferably, the drive assembly includes a gear inside the socket interface, the gear is meshed with the gear ring, a connecting block connected to the transmission mechanism is fixedly sleeved inside the gear, and a plug rod connected to the reciprocating assembly is fixed on the side of the gear.

[0015] Preferably, the reciprocating assembly comprises a square block sleeved on the plug rod, the side of the square block is movably connected with a round block fixed on the plug rod, an annular block is fixed on the square block, and the end of the annular block is fixedly connected to the movable stopper.

[0016] Preferably, the transmission mechanism comprises a transmission component and a wind energy conversion component;

[0017] Among them, the wind energy conversion component includes a fixed block fixed on the volute, and the internal movable sleeve of the fixed block is connected with a connecting rod. One end of the connecting rod passes through the volute and is annularly and equidistantly fixed with fan blades located inside the volute, and the other end of the connecting rod is connected to the transmission component.

[0018] Preferably, the transmission assembly includes a driving wheel fixed on the connecting rod, a transmission belt is sleeved on the driving wheel, the driving wheel is connected to a driven wheel fixed on the connecting block through the transmission belt, and the upper limit of the driven wheel is sleeved with a limit block fixed on the volute.

[0019] Beneficial effects of the present invention:

[0020] 1. The present invention sets a through-hole block, a fixed block and a through-port block. When the gear drives the square block to move back and forth through the plug rod, the square block drives the through-port block to move back and forth through the annular block and the movable block. Then, when the movable block completely seals the opening of the through-hole block, the through-port block can be separated from the closure of the fixed block and the through-hole block, so that the dust inside the through-port block can be discharged through the opening of the through-port block, thereby achieving the purpose of automatic dust discharge, and then the device can automatically discharge dust when it is in operation.

[0021] 2. The present invention provides a gear ring, a leakage port and a brush block. When the gear drives the gear ring to rotate, the gear ring drives the brush block to rotate and wipe and remove the dust on the filter plate. The dust wiped and removed by the brush block will fall into the through-port block through the leakage port and the through-hole block and be blocked by the fixed block, thereby achieving the purpose of automatically cleaning the filter plate.

[0022] 3. The present invention arranges fan blades, driving wheels and gears. When the permanent magnet impeller motor is running, the wind flowing out from the upper end of the volute will drive the fan blades and the connecting rod to rotate, and then the driving wheel will drive the connecting block and the gear to rotate through the transmission belt and the driven wheel, and then the driven wheel will rotate along the inner wall of the limit block, thereby achieving the purpose of wind energy conversion and reducing the waste of wind energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the structure of the fan blade of the present invention;

[0026] Figure 3 It is a schematic diagram of the structure of the air intake pipe of the present invention;

[0027] Figure 4 It is a schematic diagram of the side cross-sectional structure of the air intake pipe and the second flange block of the present invention;

[0028] Figure 5 It is a schematic diagram of the structure of the through hole stopper and the through port block of the present invention;

[0029] Figure 6 The present invention Figure 1 A schematic diagram of the partially enlarged structure at center A;

[0030] Figure 7 The present invention Figure 4 Schematic diagram of the local enlarged structure at point B in the middle.

[0031] The accompanying drawings are marked as follows: In the figure: 1, volute; 2, permanent magnet impeller motor; 3, air inlet pipe; 4, filter plate; 5, connecting rod; 6, fan blade; 7, fixed block; 8, driving wheel; 9, transmission belt; 10, limit block; 11, driven wheel; 12, connecting block; 13, gear; 14, socket; 15, gear ring; 16, circular ring; 17, leakage; 18, through-hole block; 19, fixed block; 20, through-hole block; 21, movable block; 22, annular block; 23, brush block; 24, square block; 25, plug rod; 26, round block; 27, first flange block; 28, second flange block; 29, mounting bracket; 30, mounting hole; 31, side opening. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] like Figures 1 to 7 As shown, an embodiment of the present invention provides a high-efficiency and energy-saving permanent magnet variable frequency centrifugal fan, comprising a volute 1, wherein the volute 1 comprises a fan mounting mechanism, a transmission mechanism and a filtering mechanism;

[0034] Among them, the filtering mechanism includes a filtering and cleaning component and an air intake pipe 3, the air intake pipe 3 is fixed on the volute 1, a filter plate 4 is fixed inside the air intake pipe 3, a leakage port 17 located at the filter plate 4 is opened inside the lower end of the air intake pipe 3, a through hole block 18 located below the leakage port 17 is fixed at the bottom of the air intake pipe 3, a through hole block 20 is movably connected to the bottom of the through hole block 18, a movable block 21 transmission-connected to the filtering and cleaning component is fixed on the side of the through hole block 20, and a fixed block 19 fixed on the air intake pipe 3 is movably connected to the bottom of the through hole block 20.

[0035] The filtering and cleaning assembly drives the movable block 21 to move back and forth, thereby causing the movable block 21 to drive the port block 20 to move back and forth. Then, when the movable block 21 completely seals the opening of the through-hole block 18, the port block 20 can be separated from the closure of the fixed block 19 and the through-hole block 18, thereby causing the dust inside the port block 20 to be discharged through the opening of the port block 20, thereby achieving the purpose of automatic dust discharge, and then the device can automatically discharge dust when it is in operation.

[0036] like Figure 1 As shown, the fan installation mechanism includes a fixed communication component and a fan installation component;

[0037] The fan installation assembly includes a permanent magnet impeller motor 2 fixed on the volute 1 , a mounting frame 29 is fixed on the permanent magnet impeller motor 2 , and mounting holes 30 are symmetrically opened inside the lower end of the mounting frame 29 .

[0038] Through the design of the mounting hole 30 , the operator can use bolts to pass through the mounting hole 30 to fix the mounting frame 29 as a whole on the machine body, thereby achieving the purpose of fixing the permanent magnet impeller motor 2 .

[0039] like Figure 1 As shown, the fixed communication assembly includes a first flange block 27 and a second flange block 28 . The first flange block 27 is fixed to the upper end of the volute 1 , and the second flange block 28 is fixed to the end of the intake pipe 3 .

[0040] Through the design of the first flange block 27 and the second flange block 28, the first flange block 27 can connect the volute 1 with the external exhaust pipe, and the second flange block 28 can connect the intake pipe 3 with the external air pipe.

[0041] like Figure 4 As shown, the filter cleaning assembly includes a rotating cleaning assembly, a reciprocating assembly, a driving assembly and a limiting assembly;

[0042] Among them, the rotating cleaning component includes a socket 14 opened inside the air inlet pipe 3, and the socket 14 has a gear ring 15 that is transmission-connected to the drive component. A plug rod 25 is fixed inside the gear ring 15, and one end of the plug rod 25 contacts the filter plate 4.

[0043] The driving assembly drives the gear ring 15 to rotate, and then the gear ring 15 drives the brush block 23 to rotate and remove the dust on the filter plate 4, thereby achieving the purpose of cleaning the filter plate 4.

[0044] like Figure 4 As shown, the limiting assembly includes a side opening 31 opened inside the air intake pipe 3 , and a circular ring 16 fixed to the gear ring 15 is movably sleeved inside the side opening 31 .

[0045] Through the design of the side opening 31 and the circular ring 16 , the circular ring 16 can limit the gear ring 15 through the side opening 31 , thereby making the gear ring 15 more stable during rotation.

[0046] like Figure 4 and Figure 6 As shown, the drive assembly includes a gear 13 inside the socket 14, the gear 13 is meshed with a gear ring 15, a connecting block 12 connected to the transmission mechanism is fixedly sleeved inside the gear 13, and a plug rod 25 connected to the reciprocating assembly is fixed on the side of the gear 13.

[0047] The gear 13 is driven to rotate by the transmission mechanism, and then the gear 13 drives the gear ring 15 and the insertion rod 25 to rotate.

[0048] like Figure 3 and Figure 6 As shown, the reciprocating assembly includes a square block 24 sleeved on the insertion rod 25, the side of the square block 24 is movably connected to a round block 26 fixed on the insertion rod 25, and an annular block 22 is fixed on the square block 24, and the end of the annular block 22 is fixedly connected to the moving stopper 21.

[0049] When the gear 13 rotates, the gear 13 will drive the square block 24 to move back and forth through the insertion rod 25, and the round block 26 and the insertion rod 25 will limit the square block 24, so that the square block 24 will drive the through-port block 20 to move back and forth along the inner wall of the fixed block 19 through the annular block 22 and the movable block 21.

[0050] like Figure 1 and Figure 2 As shown, the transmission mechanism includes a transmission component and a wind energy conversion component;

[0051] Among them, the wind energy conversion component includes a fixed block 7 fixed on the volute 1, and a connecting rod 5 is movably sleeved inside the fixed block 7. One end of the connecting rod 5 passes through the volute 1 and is annularly and equidistantly fixed with fan blades 6 located inside the volute 1, and the other end of the connecting rod 5 is connected to the transmission component.

[0052] Through the design of the fan blades 6, the connecting rod 5 and the fixed block 7, when the permanent magnet impeller motor 2 is running, wind will flow in from the air inlet pipe 3 and then flow out from the upper end of the volute 1, and the outflowing wind will drive the transmission component to rotate through the fan blades 6 and the connecting rod 5, thereby achieving the purpose of wind energy conversion.

[0053] like Figure 1 and Figure 6As shown, the transmission assembly includes a driving wheel 8 fixed on the connecting rod 5, a transmission belt 9 is sleeved on the driving wheel 8, the driving wheel 8 is connected to a driven wheel 11 fixed on a connecting block 12 through the transmission belt 9, and the upper limit of the driven wheel 11 is sleeved with a limit block 10 fixed on the volute 1.

[0054] Through the design of the driving wheel 8, the transmission belt 9 and the driven wheel 11, when the connecting rod 5 rotates, the driving wheel 8 will drive the connecting block 12 and the gear 13 to rotate through the transmission belt 9 and the driven wheel 11, thereby causing the driven wheel 11 to rotate along the inner wall of the limit block 10.

[0055] Working principle:

[0056] When the permanent magnet impeller motor 2 is running, wind will flow in from the air inlet pipe 3, and the filter plate 4 will filter the dust in the gas, and then flow out from the upper end of the volute 1, and the outflowing wind will push the fan blades 6 and the connecting rod 5 to rotate, so that the driving wheel 8 will drive the connecting block 12 and the gear 13 to rotate through the transmission belt 9 and the driven wheel 11, and then the driven wheel 11 will rotate along the inner wall of the limit block 10, so as to achieve the purpose of wind energy conversion and reduce the waste of wind energy.

[0057] When the gear 13 rotates, it will drive the gear ring 15 to rotate, and then the gear ring 15 will drive the brush block 23 to rotate and wipe away the dust on the filter plate 4, and the gear ring 15 will drive the ring 16 to rotate along the inner wall of the side opening 31, so that the dust wiped and removed by the brush block 23 will fall into the through-hole block 20 through the leakage port 17 and the through-hole block 18 and be blocked by the fixed block 19, thereby achieving the purpose of automatically cleaning the filter plate 4.

[0058] At the same time, the gear 13 will drive the square block 24 to move back and forth through the insertion rod 25, and the round block 26 and the insertion rod 25 will limit the square block 24, so that the square block 24 will drive the through-hole block 20 to move back and forth along the inner wall of the fixed block 19 through the annular block 22 and the movable block 21, and then when the movable block 21 completely seals the opening of the through-hole block 18, the through-hole block 20 can be separated from the closure of the fixed block 19 and the through-hole block 18, so that the dust inside the through-hole block 20 will be discharged through the opening of the through-hole block 20, thereby achieving the purpose of automatic dust discharge, and the device can automatically discharge dust when it is in operation.

[0059] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A high-efficiency and energy-saving permanent magnet variable frequency centrifugal fan, comprising a volute (1), characterized in that: The volute (1) comprises a fan mounting mechanism, a transmission mechanism and a filtering mechanism; The filtering mechanism comprises a filtering and cleaning component and an air intake pipe (3), the air intake pipe (3) being fixed on the volute (1), a filtering plate (4) being fixed inside the air intake pipe (3), a leakage opening (17) being opened inside the lower end of the air intake pipe (3) and being located at the filtering plate (4), a through hole block (18) being fixed at the bottom of the air intake pipe (3) and being located below the leakage opening (17), a through hole block (20) being movably connected at the bottom of the through hole block (18), a movable block (21) being transmission-connected to the filtering and cleaning component being fixed on the side of the through hole block (20), and a fixed block (19) being fixed on the bottom of the through hole block (20) being movably connected.

2. The high-efficiency and energy-saving permanent magnet variable frequency centrifugal fan according to claim 1 is characterized in that: The fan installation mechanism includes a fixed communication component and a fan installation component; The fan installation assembly comprises a permanent magnet impeller motor (2) fixed on a volute (1), a mounting frame (29) is fixed on the permanent magnet impeller motor (2), and mounting holes (30) are symmetrically opened inside the lower end of the mounting frame (29).

3. The high-efficiency and energy-saving permanent magnet variable frequency centrifugal fan according to claim 2 is characterized in that: The fixed communication component comprises a first flange block (27) and a second flange block (28), wherein the first flange block (27) is fixed to the upper end of the volute (1), and the second flange block (28) is fixed to the end of the air inlet pipe (3).

4. The high-efficiency and energy-saving permanent magnet variable frequency centrifugal fan according to claim 1, characterized in that: The filter cleaning assembly includes a rotating cleaning assembly, a reciprocating assembly, a driving assembly and a limiting assembly; The rotary cleaning assembly comprises a socket (14) opened inside the air inlet pipe (3), a gear ring (15) is movably sleeved inside the socket (14) and is transmission-connected to the driving assembly, a plug rod (25) is fixed inside the gear ring (15), and one end of the plug rod (25) is in contact with the filter plate (4).

5. The high-efficiency and energy-saving permanent magnet variable frequency centrifugal fan according to claim 4, characterized in that: The position limiting assembly comprises a side opening (31) opened inside the air intake pipe (3), and a circular ring (16) fixed to the gear ring (15) is movably sleeved inside the side opening (31).

6. The high-efficiency and energy-saving permanent magnet variable frequency centrifugal fan according to claim 4, characterized in that: The driving assembly comprises a gear (13) inside a socket interface (14), the gear (13) being meshedly connected with a gear ring (15), a connecting block (12) being fixedly sleeved inside the gear (13) and being transmission-connected to a transmission mechanism, and an insert rod (25) being fixedly connected to a reciprocating assembly on a side surface of the gear (13).

7. The high-efficiency and energy-saving permanent magnet variable frequency centrifugal fan according to claim 4, characterized in that: The reciprocating assembly comprises a square block (24) sleeved on an insertion rod (25), a round block (26) fixed on the insertion rod (25) being movably connected to the side of the square block (24), an annular block (22) being fixed on the square block (24), and an end of the annular block (22) being fixedly connected to a movable stopper (21).

8. The high-efficiency and energy-saving permanent magnet variable frequency centrifugal fan according to claim 1, characterized in that: The transmission mechanism includes a transmission component and a wind energy conversion component; The wind energy conversion assembly comprises a fixed block (7) fixed on a volute (1), a connecting rod (5) being movably sleeved inside the fixed block (7), one end of the connecting rod (5) passing through the volute (1) and having fan blades (6) located inside the volute (1) fixedly mounted in an annular manner and equidistantly, and the other end of the connecting rod (5) being connected to a transmission assembly.

9. The high-efficiency and energy-saving permanent magnet variable frequency centrifugal fan according to claim 8, characterized in that: The transmission assembly comprises a driving wheel (8) fixed on a connecting rod (5), a transmission belt (9) being sleeved on the driving wheel (8), the driving wheel (8) being connected to a driven wheel (11) fixed on a connecting block (12) through the transmission belt (9), and a limit block (10) fixed on the volute (1) being sleeved on the upper limit position of the driven wheel (11).

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