Dust removal type high-speed centrifugal fan

Abstract

The invention belongs to the technical field of centrifugal fans, and discloses a dust removal type high-speed centrifugal fan which comprises a shell, a driving motor is fixedly mounted at one end of the shell through a mounting seat, a speed change structure is mounted on an output shaft of the driving motor through a flat key in a clamped mode, and a driving shaft is fixedly mounted at one end of the speed change structure; a driving disc is installed at the position, located in the shell, of the outer side of the driving shaft, a protection assembly is installed on the outer side of the driving shaft, the protection assembly comprises a blocking cover slidably connected to the outer side of the driving shaft, and plush columns are installed in the blocking cover at equal intervals; dust in gas is adsorbed through static electricity, the efficient dust removal function is achieved, the air quality is improved, the requirement for the air quality in a specific environment is met, meanwhile, internal parts of a draught fan are protected against dust invasion, the service life of the device is prolonged, and the practicability is high. And the problem that energy consumption is increased due to the fact that an air inlet and an air outlet of a fan are blocked by an existing filtering device is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of centrifugal fans, and in particular relates to a dust removal type high-speed centrifugal fan. Background Art

[0002] A centrifugal fan is a machine that relies on input mechanical energy to increase gas pressure and discharge gas. It is a driven fluid machine. Based on the principle of converting kinetic energy into potential energy, a centrifugal fan uses a high-speed rotating impeller to accelerate the gas, then decelerate and change the flow direction, so that kinetic energy is converted into potential energy. Traditional centrifugal fans do not fully consider the dust removal structure. Dust and other impurities may enter the interior of the centrifugal fan and cause damage to the centrifugal fan, greatly shortening the service life of the centrifugal fan. With the increasing requirements for air quality in industrial production, the dust removal function of centrifugal fans has become more and more important. Summary of the invention

[0003] The present invention aims at the problem that the dust removal structure in the prior art is not fully considered, and dust and other impurities may enter the interior of the centrifugal fan and damage the centrifugal fan, which greatly shortens the service life of the centrifugal fan. The present invention proposes the following technical solutions: A dust removal type high-speed centrifugal fan, comprising: a housing, a driving motor is fixedly mounted on one end of the housing through a mounting seat, a speed change structure is mounted on the output shaft of the driving motor through a flat key, a driving shaft is fixedly mounted on one end of the speed change structure, a driving disk is mounted on the outside of the driving shaft at a position inside the housing, a protective component is mounted on the outside of the driving shaft, the protective component comprises a barrier cover slidably connected to the outside of the driving shaft, and plush columns are equidistantly mounted inside the barrier cover; A split guide assembly is installed inside the driving disk, and the split guide assembly includes a fan blade slidably connected to the inside of the driving disk, one end of the fan blade is fixedly connected to a guide plate, one end of the guide plate is fitted with a guide column, and the outer side of the guide column is fitted with the outer surface of the plush column.

[0004] As a preferred embodiment of the above technical solution, a movable disk is fixedly installed inside the barrier cover, the movable disk is slidably connected to the inside of the driving shaft, a threaded rod is threadedly connected to the inside of the movable disk, and the threaded rod is rotatably connected to the inside of the driving shaft.

[0005] As a preferred embodiment of the above technical solution, a positioning groove for moving the movable disk is opened inside the driving shaft, one end of the positioning groove is located at the connection between the driving shaft and the inner wall of the outer shell, and the other end of the positioning groove is close to the driving disk. A placement groove for placing the handle of the threaded rod is opened inside the driving shaft.

[0006] As a preferred embodiment of the above technical solution, a baffle is integrally formed on one end surface of the guide plate, and a metal head is integrally formed equidistantly on the outer side of the guide column.

[0007] As a preferred embodiment of the above technical solution, the number of the metal heads is set to three rows, the combination of the three rows of metal heads has a conical shape, one end face of the baffle plate and the opposite face of the drive disk are in contact with each other, and one end face of the guide column and the opposite face of the baffle plate are in contact with each other.

[0008] As a preferred embodiment of the above technical solution, a same support bar is fixedly installed between the outer sides of several of the guide columns, a same circular ring is fixedly connected between several of the support bars, and a fixed ring is rotatably connected to the outer side of the circular ring.

[0009] As a preferred embodiment of the above technical solution, the fixing ring is sleeved on the outside of the driving shaft, and one end of the fixing ring is fixedly connected to the back side of the driving disc.

[0010] As a preferred embodiment of the above technical solution, two fixing bolts are connected through the fixing ring, the circular ring and the driving disk, and the fixing bolts are connected to the fixing ring, the circular ring and the driving disk through threads.

[0011] As a preferred embodiment of the above technical solution, a rotation groove is provided inside the circular ring, and a rotating ring is fixedly installed on the fixed ring near one end of the circular ring and located inside the rotation groove.

[0012] The beneficial effects of the present invention are: (1) The dust in the gas is adsorbed by electrostatics, achieving efficient dust removal, improving air quality, and meeting the air quality requirements under specific environments. It also helps protect the internal components of the fan from dust invasion, prolongs the service life of the device, and solves the problem of increased energy consumption caused by the existing filter device blocking the fan inlet and outlet; (2) It can effectively block the static electricity generating area, prevent the entry of external dust, ensure the cleanliness of the static electricity generating area, provide guarantee for the normal function of subsequent static electricity adsorption of dust, and improve the operation stability and dust removal effect of the device; (3) The fan blades can be easily disassembled, which greatly reduces the difficulty of cleaning the fan blades, facilitates daily maintenance work, improves the maintainability and operating efficiency of the device, and reduces equipment failures and downtime caused by improper or difficult maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The structure diagram of a dust removal high-speed centrifugal fan in Example 1 is shown; Figure 2 What is shown is a schematic structural diagram of the speed change structure in Embodiment 1; Figure 3 Shown is a schematic diagram of the structure of the drive shaft in Example 1; Figure 4 Shown is a schematic diagram of the structure of the drive disk in Example 1; Figure 5 What is shown is a schematic diagram of the structure of the protection component in Example 1; Figure 6 The figure shows the assembly structure diagram of the drive shaft and the drive disc in the embodiment 1; Figure 7 What is shown is a schematic diagram of the structure of the split flow guide assembly in Example 1.

[0014] In the figure: 1. casing; 2. driving motor; 3. speed change structure; 4. driving shaft; 5. driving disk; 6. protection assembly; 61. threaded rod; 62. moving disk; 63. barrier cover; 64. plush column; 7. split guide assembly; 71. fan blade; 72. guide plate; 73. barrier plate; 74. guide column; 75. metal head; 76. support bar; 77. ring; 78. fixing ring; 79. fixing bolt. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Example

[0016] The present invention provides a dust removal high-speed centrifugal fan, such as Figures 1 to 7 As shown, it comprises: a housing 1, a driving motor 2 is fixedly mounted on one end of the housing 1 through a mounting seat, a speed change structure 3 is mounted on the output shaft of the driving motor 2 through a flat key, a driving shaft 4 is fixedly mounted on one end of the speed change structure 3, a driving disk 5 is mounted on the outer side of the driving shaft 4 at an inner position of the housing 1, a protective component 6 is mounted on the outer side of the driving shaft 4, the protective component 6 comprises a blocking cover 63 slidably connected to the outer side of the driving shaft 4, and plush columns 64 are equidistantly mounted inside the blocking cover 63; A split guide assembly 7 is installed inside the driving disk 5, and the split guide assembly 7 includes a fan blade 71 slidably connected to the inside of the driving disk 5, one end of the fan blade 71 is fixedly connected to a guide plate 72, one end of the guide plate 72 is fitted with a guide column 74, and the outer side of the guide column 74 is fitted with the outer surface of the plush column 64.

[0017] like Figure 3 and Figure 5 As shown, a movable disk 62 is fixedly installed inside the blocking cover 63, and the movable disk 62 is slidably connected to the inside of the driving shaft 4. A threaded rod 61 is threadedly connected to the inside of the movable disk 62, and the threaded rod 61 is rotatably connected to the inside of the driving shaft 4; By rotating the threaded rod 61 , the movable plate 62 is driven to move when the threaded rod 61 rotates, and the blocking cover 63 is driven to move when the movable plate 62 moves, so that one end surface of the blocking cover 63 and the back surface of the driving plate 5 are in contact with each other.

[0018] like Figure 3 and Figure 6 As shown, a positioning groove for moving the moving disk 62 is provided inside the driving shaft 4, one end of the positioning groove is located at the connection between the driving shaft 4 and the inner wall of the housing 1, and the other end of the positioning groove is close to the driving disk 5. A placement groove for placing the handle of the threaded rod 61 is provided inside the driving shaft 4; The threaded rod 61 can be placed conveniently, and the threaded rod 61 can be driven to move conveniently, and the movable plate 62 can be moved conveniently, thereby preventing the movable plate 62 from swinging when moving.

[0019] like Figure 7 As shown, a baffle plate 73 is integrally formed on one end face of the guide plate 72, and metal heads 75 are integrally formed equidistantly on the outer side of the guide column 74. The number of the metal heads 75 is set in three rows, and the shape of the combination of the three rows of metal heads 75 is conical. One end face of the baffle plate 73 and the opposite surface of the driving disk 5 are in contact with each other, and one end face of the guide column 74 and the opposite surface of the baffle plate 73 are in contact with each other. The metal head 75 increases the range between the metal head 75 and the plush column 64, thereby increasing the generation of static electricity, and then utilizing the static electricity to adsorb dust in the gas.

[0020] like Figure 7 As shown, a support bar 76 is fixedly installed between the outer sides of a plurality of guide columns 74, a circular ring 77 is fixedly connected between the plurality of support bars 76, and a fixing ring 78 is rotatably connected to the outer side of the circular ring 77; The support bar 76 is driven to move by the rotation of the ring 77 , and the support bar 76 drives the guide column 74 to move when moving, so that the guide column 74 cannot support the baffle plate 73 , thereby enabling the baffle plate 73 to move.

[0021] like Figure 4 and Figure 7 As shown, the fixing ring 78 is sleeved on the outside of the driving shaft 4, and one end of the fixing ring 78 is fixedly connected to the back of the driving disc 5; The fixed ring 78 and the driving disk 5 are made to rotate synchronously, thereby changing the difficulty of the synchronous rotation between the fixed ring 78 and the driving disk 5.

[0022] like Figure 4 and Figure 7 As shown, two fixing bolts 79 are connected through the fixing ring 78, the circular ring 77 and the driving disk 5, and the fixing bolts 79 are connected to the fixing ring 78, the circular ring 77 and the driving disk 5 by threads; Under the action of the fixing bolt 79, the fixing ring 78, the circular ring 77 and the driving disk 5 form a whole, so that the fixing ring 78, the circular ring 77 and the driving disk 5 form a synchronous rotation, which changes the difficulty of the synchronous rotation of the fixing ring 78, the circular ring 77 and the driving disk 5. The material of the driving disk 5, the blocking cover 63, the movable disk 62, the support bar 76, the circular ring 77 and the fixing ring 78 is glass fiber reinforced plastic (FRP), and the material of the fan blade 71, the guide plate 72, the blocking plate 73, the guide column 74 and the metal head 75 is aluminum.

[0023] like Figure 7 As shown, a rotating groove is opened inside the circular ring 77, and a rotating ring is fixedly installed on a fixed ring 78 near one end of the circular ring 77 and located inside the rotating groove. Through the cooperation of the rotating groove and the rotating ring, the fixed ring 78 can rotate on one end face of the circular ring 77, thereby allowing the fixed ring 78 to drive the remaining components to rotate.

[0024] Working principle: During the actual use of the device, the split deflector assembly 7 is installed, and the personnel fan blade 71 is installed between the driving disk 5. At this time, the fan blade 71 drives the baffle plate 73 to contact the back of the driving disk 5 through the deflector plate 72, and then one of the support bars 76 is rotated. When the support bar 76 rotates, it drives the ring 77 to rotate. When the ring 77 rotates, it drives multiple support bars 76 to rotate synchronously. At the same time, the support bar 76 drives the deflector column 74 and the metal head 75 to move. When the support bar 76 drives the metal head 75 to squeeze and fix with the baffle plate 73, the personnel rotate the fixing bolt 79 , so that the fixing bolt 79 is fixed with the fixing ring 78, the circular ring 77 and the driving disk 5, and then the personnel rotate the threaded rod 61, and the threaded rod 61 rotates to drive the movable disk 62 to move, and the movable disk 62 moves to drive the barrier cover 63 to enter the back of the driving disk 5, and at the same time, the plush column 64 contacts the guide column 74 and the metal head 75 of the split guide assembly 7. At this time, it can effectively block the static electricity generation area, prevent external dust from entering, ensure the cleanliness of the static electricity generation area, provide a guarantee for the normal performance of the subsequent static electricity adsorption dust function, and improve the operation stability and dust removal effect of the device; After the power is turned on, the drive motor 2 starts to run, providing a power source for the entire fan system. The output shaft of the drive motor 2 starts to work through the speed change structure 3 installed by the flat key. The speed change structure 3 adjusts the speed according to the preset transmission ratio, and then transmits the power to the drive shaft 4. The drive shaft 4 starts to rotate under the drive of the speed change structure 3. At the same time, the drive disk 5 on the outside of the drive shaft 4 also rotates accordingly. The fan blades 71 in the split guide assembly 7 installed inside the drive disk 5 start to rotate under the drive of the drive disk 5. The rotation of the fan blades 71 causes the gas to enter the fan from the air inlet of the outer shell 1, and accelerates the flow along the guide direction of the fan blades 71 under the action of centrifugal force to form a high-speed airflow. The guide column 74 connected at one end of the guide plate 72 is in contact with the outer surface of the plush column 64. Driven by the airflow, the outer surface of the guide column 74 Static electricity is generated by the friction between the metal heads 75 and the plush columns 64, which are equidistant from each other. The number of metal heads 75 is set to three rows, and the combination of the three rows of metal heads 75 is conical. This structural design increases the contact area and friction range with the plush columns 64, thereby improving the efficiency of static electricity generation. During the static electricity generation process, it is transmitted to the outside of the fan blades 71 through the blocking plate 73 and the guide plate 72. At this time, the generated static electricity is used to adsorb dust in the gas. The static electricity adsorbs dust in the gas, realizes an efficient dust removal function, improves air quality, and meets the requirements for air quality in specific environments. At the same time, it also helps to protect the internal components of the fan from dust invasion, prolongs the service life of the device, and also changes the problem of increased energy consumption caused by the existing filtering device blocking the air inlet and outlet of the fan. Next, when the fan needs to be stopped, the power supply is cut off and the drive motor 2 stops running. Since the fan system has a certain inertia, the drive shaft 4, the drive disc 5 and the split guide assembly 7 and other components will continue to run for a period of time after the motor stops, until they gradually stop. During the stopping process, the relative positions of the components remain stable, ready for the next start-up. Finally, when the fan blade 71 needs to be disassembled, the personnel drives the protective assembly 6 to separate the protective assembly 6 from the split guide assembly 7, and then rotates the fixing bolt 79 to separate the fixing bolt 79 from the fixing ring 78, the circular ring 77 and the driving disk 5, and then rotates one of the support bars 76. When the support bar 76 rotates, it drives the circular ring 77 to rotate. When the circular ring 77 rotates, it drives multiple support bars 76 to rotate synchronously. At the same time, the support bar 76 drives the guide column 74 and the metal head 75 to move, and then the personnel pushes the fan blade 71, and the fan blade 71 drives the guide plate 72 and the baffle plate 73 to separate from the driving disk 5, so that the fan blade 71 can be disassembled and cleaned, which changes the difficulty of cleaning the fan blade 71, realizes the convenient disassembly of the fan blade 71, greatly reduces the difficulty of cleaning the fan blade 71, facilitates the daily maintenance work, improves the maintainability and operation efficiency of the device, and reduces equipment failures and downtime caused by improper or difficult maintenance.

[0025] The above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them.

Claims

1. A dust removal high-speed centrifugal fan, characterized in that: include: A housing (1), wherein a driving motor (2) is fixedly mounted on one end of the housing (1) via a mounting seat, a speed change structure (3) is mounted on an output shaft of the driving motor (2) via a flat key, a driving shaft (4) is fixedly mounted on one end of the speed change structure (3), a driving disk (5) is mounted on the outside of the driving shaft (4) at a position inside the housing (1), a protective component (6) is mounted on the outside of the driving shaft (4), the protective component (6) comprises a barrier cover (63) slidably connected to the outside of the driving shaft (4), and plush columns (64) are equidistantly mounted inside the barrier cover (63); A split flow guide assembly (7) is installed inside the driving disk (5), and the split flow guide assembly (7) comprises a fan blade (71) slidably connected to the inside of the driving disk (5), one end of the fan blade (71) is fixedly connected to a flow guide plate (72), one end of the flow guide plate (72) is fitted with a flow guide column (74), and the outer side of the flow guide column (74) is fitted with the outer surface of the plush column (64).

2. A dust removal high-speed centrifugal fan according to claim 1, characterized in that: A movable disk (62) is fixedly mounted inside the barrier cover (63), and the movable disk (62) is slidably connected to the inside of the drive shaft (4). A threaded rod (61) is threadedly connected to the inside of the movable disk (62), and the threaded rod (61) is rotatably connected to the inside of the drive shaft (4).

3. A dust removal high-speed centrifugal fan according to claim 2, characterized in that: A positioning groove for moving the movable disk (62) is provided inside the driving shaft (4), one end of the positioning groove is located at the connection between the driving shaft (4) and the inner wall of the housing (1), and the other end of the positioning groove is close to the driving disk (5). A placement groove for placing the handle of the threaded rod (61) is provided inside the driving shaft (4).

4. The dust removal high-speed centrifugal fan according to claim 1, characterized in that: A blocking plate (73) is integrally formed on one end surface of the guide plate (72), and a metal head (75) is integrally formed equidistantly on the outside of the guide column (74).

5. A dust removal high-speed centrifugal fan according to claim 4, characterized in that: The number of the metal heads (75) is set to three rows in total, and the shape of the combination of the three rows of metal heads (75) is conical. One end surface of the baffle plate (73) and the opposite surface of the driving disk (5) are in contact with each other, and one end surface of the guide column (74) and the opposite surface of the baffle plate (73) are in contact with each other.

6. A dust removal high-speed centrifugal fan according to claim 2, characterized in that: A common support bar (76) is fixedly installed between the outer sides of a plurality of the guide columns (74), a common circular ring (77) is fixedly connected between a plurality of the support bars (76), and a fixed ring (78) is rotatably connected to the outer side of the circular ring (77).

7. A dust removal high-speed centrifugal fan according to claim 6, characterized in that: The fixing ring (78) is sleeved on the outside of the driving shaft (4), and one end of the fixing ring (78) is fixedly connected to the back side of the driving disc (5).

8. The dust removal high-speed centrifugal fan according to claim 6, characterized in that: Two fixing bolts (79) are connected through the fixing ring (78), the circular ring (77) and the driving disk (5), and the fixing bolts (79) are connected to the fixing ring (78), the circular ring (77) and the driving disk (5) via threads.

9. The dust removal high-speed centrifugal fan according to claim 6, characterized in that: A rotation groove is provided inside the circular ring (77), and the fixed ring (78) is fixedly mounted with a rotation ring near one end of the circular ring (77) and located inside the rotation groove.

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