CN219754853U - Explosion-proof centrifugal fan - Google Patents
Explosion-proof centrifugal fan Download PDFInfo
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- CN219754853U CN219754853U CN202321076096.0U CN202321076096U CN219754853U CN 219754853 U CN219754853 U CN 219754853U CN 202321076096 U CN202321076096 U CN 202321076096U CN 219754853 U CN219754853 U CN 219754853U
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- 241000886569 Cyprogenia stegaria Species 0.000 claims abstract description 21
- 230000007246 mechanism Effects 0.000 claims abstract description 13
- 230000005540 biological transmission Effects 0.000 claims description 14
- 239000002245 particle Substances 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 9
- 230000000903 blocking effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 230000009172 bursting Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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Abstract
The utility model discloses an explosion-proof centrifugal fan which comprises a fan shell, a filter plate and fan blades, wherein a shielding mechanism is arranged at one end of the fan shell and comprises a fixing frame fixedly arranged at one end of the fan shell, an object shielding plate is movably arranged at the outer side of the fixing frame through a rotating shaft, a connecting frame is fixedly arranged at the upper end of the object shielding plate, and a control frame is fixedly arranged at the front end of the connecting frame. According to the explosion-proof centrifugal fan, the sliding ring is stretched by the spring to slide along the sliding rod to the side close to the fixed plate, and the control frame pulls the shielding plate to tightly close to the fan shell through the connecting frame, so that the purpose of conveniently blocking the shielding plate at one end of the fan shell is achieved, and particles outside the fan shell are prevented from falling into the interior of the fan shell, so that the fan impeller is prevented from being beaten into particles in a high-speed rotating state, the situation that the fan impeller bursts is avoided, and the fan shell has an explosion-proof effect on the fan impeller.
Description
Technical Field
The utility model relates to the technical field of centrifugal fans, in particular to an explosion-proof centrifugal fan.
Background
The centrifugal fan belongs to one of impeller machines, is widely applied to various fields of energy sources, environment, aviation and the like, and is one of main energy consumption equipment in industrial and agricultural production. The centrifugal fan is a relatively precise operation machine, and negative pressure is formed in the fan by means of rotation of the impeller, so that external air is sucked into the fan and discharged out of the fan through the impeller flow channel and the volute;
the traditional centrifugal fan has some disadvantages, and the impeller of the traditional centrifugal fan is made of plastic, so that the impeller generates a large amount of air flow in the high-speed rotation process, but if hard solid particles exist in the centrifugal fan, the hard solid particles collide with the impeller under the high-speed rotation action of the impeller, so that the impeller bursts, and the traditional centrifugal fan does not have the explosion-proof characteristic.
Disclosure of Invention
The utility model mainly aims to provide an explosion-proof centrifugal fan which can effectively solve the problems in the background technology.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
the utility model provides an explosion-proof centrifugal fan, includes fan housing, filter, fan impeller, the one end of fan housing is provided with shielding mechanism, shielding mechanism is including the fixed mount of fixed setting in fan housing one end, the outside of mount is provided with the thing board of shielding through the pivot activity, the fixed link that is provided with in upper end of thing board, the fixed control frame that is provided with in front end of link, the inboard activity of control frame is provided with the sliding ring, the inboard slip of sliding ring is provided with the slide bar, one side activity that the outside of slide bar is close to the slide ring is provided with the spring, the fixed loose axle that is provided with in upper end of sliding ring, the fixed plate that is provided with in rear end of slide bar, the outside activity of fixed plate is provided with the movable frame, the fixed axis of rotation that is provided with in upper end of fixed plate, the fixed dead lever that is provided with of movable frame.
Preferably, the other end of the sliding rod is fixedly provided with a baffle, the connecting frame is L-shaped, the control frame is C-shaped, and one end of the spring is fixedly connected with one end of the sliding ring.
Preferably, the other end of the spring is fixedly connected with one end of the fixed plate, which is close to the outer side of the sliding rod, and the movable shaft extends to the inside of the control frame and is movably connected with the control frame.
Preferably, the rotation shaft extends to the inside of the movable frame, the movable connection is arranged between the rotation shaft and the movable frame, the lower end of the fixed rod is fixedly connected with the upper end of the fan shell, and the number of the shielding mechanisms is two.
Preferably, the air inlet is formed in the other end of the fan shell, the filter plate is arranged on the inner side of the air inlet, the fan impeller is arranged on the inner side of the fan shell, the transmission shaft is fixedly arranged on the inner side of the fan impeller and penetrates through the inner part of the fan shell, and the transmission shaft is movably connected with the fan shell.
Preferably, the front end of the fan housing is fixedly provided with a supporting frame, the upper end of the supporting frame is fixedly provided with a motor, the front end of the transmission shaft is arranged at the rear end of the motor, and the lower end of the fan housing is fixedly provided with a base.
Compared with the prior art, the utility model has the following beneficial effects:
1. the sliding ring is stretched by the spring to slide along the sliding rod towards one side close to the fixed plate, and the control frame pulls the shielding plate to tightly cling to the fan shell through the connecting frame, so that the purpose of conveniently blocking the shielding plate at one end of the fan shell can be achieved, and external particles of the fan shell are prevented from falling into the fan shell, so that the fan impeller is prevented from being beaten to the particles in a high-speed rotating state, the situation that the fan impeller bursts is avoided, and the fan shell has an explosion-proof effect on the fan impeller.
2. By starting the motor, the motor drives the fan impeller to rotate at a high speed in the inner side of the fan shell through the transmission shaft, and outside air flows into the inner side of the fan shell through the filter plate, so that the fan impeller rotating at a high speed can blow out the air.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an explosion-proof centrifugal fan of the present utility model;
FIG. 2 is a schematic diagram of the internal structure of an explosion-proof centrifugal fan according to the present utility model;
FIG. 3 is a schematic diagram of a shielding mechanism of an explosion-proof centrifugal fan;
fig. 4 is a schematic diagram of a partial structure of a shielding mechanism of an explosion-proof centrifugal fan.
In the figure: 1. a blower housing; 2. a filter plate; 3. an air inlet; 4. a wind impeller; 5. a support frame; 6. a motor; 7. a shielding mechanism; 71. a fixing frame; 72. a mask; 73. a connecting frame; 74. a control rack; 75. a slip ring; 76. a slide bar; 77. a spring; 78. a movable shaft; 79. a fixing plate; 710. a movable frame; 711. a rotating shaft; 712. a fixed rod; 713. a baffle; 8. and (5) a base.
Detailed Description
The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.
As shown in fig. 1-4, an explosion-proof centrifugal fan comprises a fan housing 1, a filter plate 2 and a fan blade 4, wherein a shielding mechanism 7 is arranged at one end of the fan housing 1, the shielding mechanism 7 comprises a fixing frame 71 fixedly arranged at one end of the fan housing 1, a shielding plate 72 is movably arranged at the outer side of the fixing frame 71 through a rotating shaft, a connecting frame 73 is fixedly arranged at the upper end of the shielding plate 72, a control frame 74 is fixedly arranged at the front end of the connecting frame 73, a sliding ring 75 is movably arranged at the inner side of the control frame 74, a sliding rod 76 is slidably arranged at the inner side of the sliding ring 75, a spring 77 is movably arranged at one side, close to the sliding ring 75, of the outer side of the sliding rod 76, a movable shaft 78 is fixedly arranged at the upper end of the sliding ring 75, a fixing plate 79 is fixedly arranged at the rear end of the sliding rod 79, a movable frame 710 is movably arranged at the outer side of the fixing plate 79, a rotating shaft is fixedly arranged at the upper end of the fixing plate 79, and a fixing rod is fixedly arranged at one end of the movable frame 710.
In this embodiment, the other end of the sliding rod 76 is fixedly provided with a baffle 713, the connecting frame 73 is L-shaped, the control frame 74 is C-shaped, one end of the spring 77 is fixedly connected with one end of the sliding ring 75, the other end of the spring 77 is fixedly connected with one end of the fixed plate 79, which is close to the outer side of the sliding rod 76, the movable shaft 78 extends to the inside of the control frame 74, the movable shaft 78 is movably connected with the control frame 74, the rotating shaft 711 extends to the inside of the movable frame 710, the rotating shaft 711 is movably connected with the movable frame 710, the lower end of the fixed rod 712 is fixedly connected with the upper end of the blower housing 1, and two shielding mechanisms 7 are provided.
Specifically, firstly, the impeller 4 rotating at a high speed blows out air, so that the air pushes the object shielding plate 72 to rotate, and the object shielding plate 72 drives the control frame 74 through the connecting frame 73, so that the control frame 74 pulls the sliding ring 75 to slide along the sliding rod 76 through the movable shaft 78, and the sliding ring 75 stretches the spring 77, so that the impeller 4 blows out air to the outside, then the impeller 4 does not blow out air to the outside, and the spring 77 contracts inwards, so that the sliding ring 75 slides reversely along the sliding rod 76, and the control frame 74 drives the object shielding plate 72 to rotate reversely through the connecting frame 73, so that the object shielding plate 72 is tightly attached to one end of the fan housing 1, so that the object shielding plate 72 blocks an air outlet of the fan housing 1, the sliding ring 75 is pulled to the side close to the fixed plate 79 through the spring 77, and the control frame 74 pulls the object shielding plate 72 to be tightly attached to the fan housing 1 through the connecting frame 73, so that the object shielding plate 72 is prevented from being blocked at one end of the fan housing 1, particles outside the fan housing 1 are prevented from dropping into the fan housing 1, and the particles outside the fan housing 1 are prevented from bursting out of the impeller 4, and the fan housing 4 is prevented from bursting due to the high-speed particles.
In this embodiment, air intake 3 has been seted up to the other end of fan housing 1, the inboard at air intake 3 is installed to filter 2, fan blade wheel 4 installs the inboard at fan housing 1, the inboard of fan blade wheel 4 is fixed and is provided with the transmission shaft, the transmission shaft runs through the inside of fan housing 1, swing joint between transmission shaft and the fan housing 1, the front end of fan housing 1 is fixed and is provided with support frame 5, the upper end of support frame 5 is fixed and is provided with motor 6, the rear end department at motor 6 is installed to the front end of transmission shaft, the lower extreme of fan housing 1 is fixed and is provided with base 8.
Specifically, by starting the motor 6, the motor 6 drives the fan impeller 4 to rotate at a high speed in the inside of the fan housing 1 via the transmission shaft, and outside air flows into the inside of the fan housing 1 via the filter plate 2, so that the fan impeller 4 rotating at a high speed can blow out the air.
Working principle:
in use, a worker first activates the motor 6, so that the motor 6 rotates the impeller 4 at a high speed in the inside of the fan housing 1 via the transmission shaft, and outside air is caused to flow into the inside of the fan housing 1 via the filter plate 2, thereby causing the filter plate 2 to filter out particulate matter contained in the air, and then causes the impeller 4 rotating at a high speed to blow out the air, thereby causing the air to push the shutter plate 72 to rotate, and causing the shutter plate 72 to drive the control frame 74 via the link frame 73, thereby causing the control frame 74 to pull the sliding ring 75 to slide along the sliding rod 76 via the movable shaft 78, while the sliding rod 76 drives the fixed plate 79 to rotate in the inside of the movable frame 710 about the rotation shaft 711, thereby causing the sliding ring 75 to stretch the spring 77, thereby causing the impeller 4 to blow out the air, and then turning off the motor 6, thereby causing the impeller 4 not to blow out, and the spring 77 is contracted inwards to enable the sliding ring 75 to slide reversely along the sliding rod 76, so that the control frame 74 drives the shielding plate 72 to rotate reversely through the connecting frame 73, the shielding plate 72 is tightly attached to one end of the fan housing 1, the shielding plate 72 blocks the air outlet of the fan housing 1, and the external particles of the fan housing 1 are prevented from falling into the interior of the fan housing 1, so that the impeller 4 is prevented from beating the particles in a high-speed rotating state, the situation that the impeller 4 bursts is avoided, the fan housing 1 has an explosion-proof effect on the impeller 4, the sliding ring 75 is stretched by the spring 77 along the sliding rod 76 to the side close to the fixed plate 79, and the shielding plate 72 is pulled by the control frame 74 to tightly attach to the fan housing 1 through the connecting frame 73, the purpose of facilitating the shielding plate 72 to be blocked at one end of the fan housing 1 can be achieved, and prevent the external particulate matters of the fan housing 1 from falling into the interior of the fan housing 1, thereby preventing the impeller 4 from striking the particulate matters in a high-speed rotation state, avoiding the explosion condition of the impeller 4, and enabling the fan housing 1 to have an explosion-proof effect on the impeller 4.
The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides an explosion-proof centrifugal fan, includes fan housing (1), filter (2), fan blade wheel (4), its characterized in that: the fan comprises a fan housing (1), and is characterized in that one end of the fan housing (1) is provided with a shielding mechanism (7), the shielding mechanism (7) comprises a fixing frame (71) fixedly arranged at one end of the fan housing (1), a shielding plate (72) is movably arranged at the outer side of the fixing frame (71) through a rotating shaft, a connecting frame (73) is fixedly arranged at the upper end of the shielding plate (72), a control frame (74) is fixedly arranged at the front end of the connecting frame (73), a sliding ring (75) is movably arranged at the inner side of the control frame (74), a sliding rod (76) is slidably arranged at the inner side of the sliding ring (75), a spring (77) is movably arranged at one side, close to the sliding ring (75), of the outer side of the sliding rod (76), a movable shaft (78) is fixedly arranged at the upper end of the sliding rod (75), a fixed plate (79) is fixedly arranged at the rear end of the sliding rod (76), a movable frame (710) is movably arranged at the outer side of the fixed plate (79), a rotating shaft (711) is fixedly arranged at the upper end of the fixed plate (79), and one end of the movable frame (710) is fixedly arranged at the fixed rod (710).
2. An explosion-proof centrifugal fan according to claim 1, wherein: the other end of the sliding rod (76) is fixedly provided with a baffle plate (713), the connecting frame (73) is L-shaped, the control frame (74) is C-shaped, and one end of the spring (77) is fixedly connected with one end of the sliding ring (75).
3. An explosion-proof centrifugal fan according to claim 2, wherein: the other end of the spring (77) is fixedly connected with one end of the fixed plate (79) close to the outer side of the sliding rod (76), the movable shaft (78) extends to the inside of the control frame (74), and the movable shaft (78) is movably connected with the control frame (74).
4. An explosion-proof centrifugal fan according to claim 2, wherein: the rotating shaft (711) extends to the inside of the movable frame (710), the rotating shaft (711) is movably connected with the movable frame (710), the lower end of the fixed rod (712) is fixedly connected with the upper end of the fan shell (1), and the number of the shielding mechanisms (7) is two.
5. An explosion-proof centrifugal fan according to claim 1, wherein: the novel air conditioner is characterized in that an air inlet (3) is formed in the other end of the fan housing (1), the filter plate (2) is arranged on the inner side of the air inlet (3), the fan impeller (4) is arranged on the inner side of the fan housing (1), a transmission shaft is fixedly arranged on the inner side of the fan impeller (4), the transmission shaft penetrates through the inner portion of the fan housing (1), and the transmission shaft is movably connected with the fan housing (1).
6. The explosion-proof centrifugal fan according to claim 5, wherein: the front end of the fan housing (1) is fixedly provided with a supporting frame (5), the upper end of the supporting frame (5) is fixedly provided with a motor (6), the front end of the transmission shaft is arranged at the rear end of the motor (6), and the lower end of the fan housing (1) is fixedly provided with a base (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321076096.0U CN219754853U (en) | 2023-05-05 | 2023-05-05 | Explosion-proof centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321076096.0U CN219754853U (en) | 2023-05-05 | 2023-05-05 | Explosion-proof centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219754853U true CN219754853U (en) | 2023-09-26 |
Family
ID=88090845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321076096.0U Active CN219754853U (en) | 2023-05-05 | 2023-05-05 | Explosion-proof centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219754853U (en) |
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2023
- 2023-05-05 CN CN202321076096.0U patent/CN219754853U/en active Active
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