CN220452341U - Explosion-proof centrifugal fan - Google Patents
Explosion-proof centrifugal fan Download PDFInfo
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- CN220452341U CN220452341U CN202322157788.4U CN202322157788U CN220452341U CN 220452341 U CN220452341 U CN 220452341U CN 202322157788 U CN202322157788 U CN 202322157788U CN 220452341 U CN220452341 U CN 220452341U
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- explosion
- proof
- air
- centrifugal fan
- filter screen
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- 230000005540 biological transmission Effects 0.000 claims abstract description 32
- 238000004880 explosion Methods 0.000 claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 2
- 238000001914 filtration Methods 0.000 abstract description 3
- 239000012535 impurity Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 239000002184 metal Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Abstract
The utility model discloses an explosion-proof centrifugal fan which comprises a base, an explosion-proof motor, a wind scooper and an explosion-proof component, wherein the explosion-proof motor is arranged above the base, one side of the explosion-proof motor is provided with the wind scooper, the top end surface of the wind scooper is provided with an air outlet, the side end surface of the wind scooper is provided with an air inlet, the air inlet of the wind scooper is provided with the explosion-proof component, the explosion-proof component comprises a support frame, a first filter screen, threaded holes, an air inlet pipe, an air outlet pipe, a flow guiding block and a baffle, and the air outlet is provided with a second filter screen. The anti-explosion motor is characterized in that a transmission shaft is arranged at the output end of the anti-explosion motor, an anti-explosion impeller is arranged in the inner cavity of the air guide cover, a driven wheel is arranged on one side of the anti-explosion impeller, and the transmission shaft is connected with the driven wheel through a transmission belt. The explosion-proof centrifugal fan prevents the centrifugal fan from explosion by filtering impurities or foreign matters entering from the air inlet, and prevents the foreign matters from entering the centrifugal fan, so that the explosion-proof centrifugal fan collides with the explosion-proof impeller.
Description
Technical Field
The utility model relates to the technical field of centrifugal fans, in particular to an explosion-proof centrifugal fan.
Background
Centrifugal fans are widely used for ventilation, dust removal, cooling and the like of factories, mines, tunnels, cooling towers, vehicles, ships, buildings and the like, and are driven fluid machines which increase gas pressure and discharge gas by means of input mechanical energy, and can be divided into environment-friendly fans, explosion-proof fans, high-temperature boiler induced fans and the like. As the application number cn202211195817.X discloses a centrifugal fan impeller and a centrifugal fan, a small part of gas at the bottom of an air outlet flows faster under the rotation action of blades, the acting force of the small part of gas is larger than the opening value of an annular elastic valve plate, so that the small part of gas enters the first inner cavity through a first through hole, the small part of gas directly acts on the inner side wall of a volute, the noise generated when the centrifugal fan is used is further reduced in an auxiliary manner, the phenomenon of secondary backflow is prevented from being generated, and the resistance to the flowing direction of the next blade is prevented.
Similar to a centrifugal fan impeller and centrifugal fan described above, the following disadvantages still exist: firstly, the explosion-proof centrifugal fan mainly prevents the centrifugal fan from being exploded, besides a centrifugal fan body, an impeller, a motor and a cable, metal foreign matters are prevented from entering a shell to collide when the centrifugal fan works, so that the air inlet quantity is ensured, and the foreign matters are prevented from entering the centrifugal fan.
Accordingly, in view of the above, an explosion-proof centrifugal fan is proposed to achieve the purpose of having more practical value by researching and improving the existing structure and the defects.
Disclosure of Invention
The utility model aims to provide an explosion-proof centrifugal fan, which aims to solve the problems that the air inlet quantity is ensured and foreign matters are prevented from entering the centrifugal fan in the prior art.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an explosion-proof centrifugal fan, includes base, explosion-proof motor, wind scooper and explosion-proof subassembly, the top at the base is installed to the explosion-proof motor, one side of explosion-proof motor is provided with the wind scooper, the air outlet is installed to the top face of wind scooper, the side terminal surface of wind scooper is provided with the air intake, the air intake department of wind scooper is provided with explosion-proof subassembly, the explosion-proof subassembly includes support frame and first filter screen, one side of support frame is provided with first filter screen, the side of support frame runs through and is provided with the screw hole, the top of first filter screen is provided with the air-supply line, and one side of air-supply line is provided with out the tuber pipe, the air-supply line passes through the guide block and is connected with out the tuber pipe intercommunication, the inside of guide block is hollow structure, and the lateral wall of guide block inner chamber is provided with the baffle, air outlet department is provided with the second filter screen.
Further, the output end of the explosion-proof motor is provided with a transmission shaft, the inner cavity of the air guide cover is provided with an explosion-proof impeller, one side of the explosion-proof impeller is provided with a driven wheel, and the transmission shaft is connected with the driven wheel through a transmission belt.
Further, the first filter screen and the second filter screen are arranged in a steel wire cross mode, the pore diameters of the first filter screen and the second filter screen are the same, and the first filter screen and the second filter screen are fixedly connected to the support frame and the air outlet respectively.
Further, the air outlet forms a communication structure with the air inlet through the air guide cover, the support frame forms a detachable bolt connection with the air inlet through the threaded hole, and the transmission shaft forms a belt transmission structure with the driven wheel through the transmission belt.
Further, the air inlet pipe and the air outlet pipe form a communication structure through the flow guide block, the air outlet pipe is equal to the length of the air inlet pipe, the flow guide block is arranged in the middle of the air inlet pipe, and the air inlet end of the air inlet pipe is horn-shaped.
Further, the inner cavity of the air guide cover is provided with an explosion-proof plate, the inside of the air guide block is provided with a baffle, and the explosion-proof plate and the baffle are obliquely arranged.
Compared with the prior art, the utility model has the beneficial effects that: the explosion-proof centrifugal fan prevents the centrifugal fan from explosion by filtering impurities or foreign matters entering at the air inlet, and prevents the foreign matters from entering the centrifugal fan, so that the explosion-proof centrifugal fan collides with the explosion-proof impeller;
the device is characterized in that a filter screen for preventing foreign matters from entering the inside of the centrifugal fan is respectively arranged at an air outlet and an air inlet of the air guide cover, the filter screen is filtered through an explosion-proof assembly at the air inlet, when the centrifugal fan works, an air inlet pipe is utilized for air suction, wind power enters an air outlet pipe through a guide block, and finally, at an explosion-proof impeller in the air guide cover, the foreign matters are blocked through a baffle plate in an inner cavity of the guide block, and stay in the air inlet pipe, so that the foreign matters are prevented from entering the inner cavity of the centrifugal fan through the guide block and the air outlet pipe, and the collision of the foreign matters and the explosion-proof impeller is avoided, and the hidden danger of explosion or spark of the centrifugal fan is generated;
the explosion-proof motor of the device forms a belt transmission structure with the explosion-proof impeller through the transmission belt, the transmission shaft and the driven wheel, thereby preventing the transmission wheel from generating sparks, facilitating the installation of the support frame on the wind scooper through the threaded hole, and effectively avoiding the metal foreign matters from entering the inner cavity of the centrifugal fan by utilizing the first filter screen and the second filter screen.
Drawings
FIG. 1 is a schematic diagram of the front view of an explosion-proof centrifugal fan;
FIG. 2 is a schematic diagram of a top view of an explosion-proof centrifugal fan according to the present utility model;
FIG. 3 is a schematic diagram of an explosion-proof centrifugal fan support frame structure according to the present utility model;
FIG. 4 is a schematic diagram of the front view of an explosion-proof assembly of an explosion-proof centrifugal fan according to the present utility model;
fig. 5 is a schematic diagram of the front view structure of the flow guiding block of the explosion-proof centrifugal fan.
In the figure: 1. a base; 2. an explosion-proof motor; 3. a wind scooper; 4. an explosion-proof assembly; 401. a support frame; 402. a first filter screen; 403. a threaded hole; 404. an air inlet pipe; 405. an air outlet pipe; 406. a flow guiding block; 407. a baffle; 5. an air outlet; 6. an air inlet; 7. a second filter screen; 8. a transmission shaft; 9. an explosion-proof impeller; 10. driven wheel; 11. a driving belt.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1 to 5, the present utility model provides a technical solution: the utility model provides an explosion-proof centrifugal fan, including base 1, explosion-proof motor 2, wind scooper 3 and explosion-proof subassembly 4, explosion-proof motor 2 installs in the top of base 1, one side of explosion-proof motor 2 is provided with wind scooper 3, explosion-proof motor 2 is a model YBX 3's motor in particular, air outlet 5 is installed to wind scooper 3's top face, wind scooper 3's side face is provided with air intake 6, wind scooper 3's air intake 6 department is provided with explosion-proof subassembly 4, explosion-proof subassembly 4 includes support frame 401 and first filter screen 402, one side of support frame 401 is provided with first filter screen 402, the side of support frame 401 runs through and is provided with screw hole 403, the top of first filter screen 402 is provided with air-supply line 404, and one side of air-supply line 404 is provided with air-out line 405, air-supply line 404 is connected with air-out line 405 intercommunication through guide block 406, the inside of guide block 406 is hollow structure, and the lateral wall of guide block 406 inner chamber is provided with baffle 407, air outlet 5 and air intake 6 at wind scooper 3 all install the filter screen that prevents the filter screen from getting into inside the centrifugal fan, in order to filter screen 4 of air intake 6 department filters;
when the centrifugal fan works, air suction is performed by using the air inlet pipe 404, wind power enters the air outlet pipe 405 through the air guide block 406, and finally enters the explosion-proof impeller 9 in the air guide cover 3, the baffle 407 in the inner cavity of the air guide block 406 stops the foreign matters, so that the foreign matters stay in the air inlet pipe 404, the foreign matters are prevented from entering the inner cavity of the centrifugal fan through the air guide block 406 and the air outlet pipe 405, the foreign matters are prevented from colliding with the explosion-proof impeller 9 to generate hidden danger of explosion or spark of the centrifugal fan, a second filter screen 7 is arranged at the air outlet 5, the output end of the explosion-proof motor 2 is provided with a transmission shaft 8, the inner cavity of the air guide cover 3 is provided with the explosion-proof impeller 9, one side of the explosion-proof impeller 9 is provided with a driven wheel 10, the transmission shaft 8 is connected with the driven wheel 10 through a transmission belt 11, and the explosion-proof motor 2 and the driven wheel 10 and the explosion-proof impeller 9 form belt transmission;
starting the explosion-proof motor 2, wherein the explosion-proof motor 2 drives the explosion-proof impeller 9 to rotate through the transmission belt 11, the transmission shaft 8 and the driven wheel 10, so that sparks are prevented from being generated by the transmission wheel, the support frame 401 is conveniently mounted on the wind scooper 3 by using the threaded holes 403, and metal foreign matters can be effectively prevented from entering the inner cavity of the centrifugal fan through the first filter screen 402 and the second filter screen 7;
the first filter screen 402 and the second filter screen 7 are all steel wire cross arrangement, and the aperture of the first filter screen 402 is the same with that of the second filter screen 7, the first filter screen 402 and the second filter screen 7 are fixedly connected at the support frame 401 and the air outlet 5 respectively, the air outlet 5 forms a communication structure with the air inlet 6 through the air guide cover 3, the support frame 401 forms detachable bolt connection with the air inlet 6 through the threaded hole 403, the transmission shaft 8 forms a belt transmission structure with the driven wheel 10 through the transmission belt 11, the air inlet pipe 404 forms a communication structure with the air outlet pipe 405 through the guide block 406, and the air outlet pipe 405 is equal to the general of the length of the air inlet pipe 404, the guide block 406 is installed in the middle part of the air inlet pipe 404, the air inlet end of the air inlet pipe 404 is horn-shaped, the inner cavity of the air guide cover 3 is provided with the explosion-proof plate, the internally mounted of the guide block 406 is provided with the baffle 407, and the explosion-proof plate and the baffle 407 are all obliquely arranged.
Working principle: when the explosion-proof centrifugal fan is used, the explosion-proof assembly 4 and the second filter screen 7 are firstly arranged at the air outlet 5 and the air inlet 6 of the air guide cover 3 respectively, the explosion-proof motor 2 is started, the explosion-proof motor 2 drives the explosion-proof impeller 9 to rotate through the transmission belt 11, the transmission shaft 8 and the driven wheel 10, so that the pressure is changed by the device, the explosion-proof assembly 4 at the air inlet 6 is used for filtering, when the centrifugal fan works, air suction is carried out through the air inlet pipe 404, wind power enters the air outlet pipe 405 through the guide block 406, and finally, the baffle 407 of the inner cavity of the guide block 406 is used for blocking foreign matters when the wind power passes through the inner cavity of the guide block 406, so that the foreign matters stay in the air inlet pipe 404, the foreign matters are prevented from entering the inner cavity of the centrifugal fan through the guide block 406 and the air outlet pipe 405, and the explosion-proof impeller 9 are prevented from being collided, and the explosion of the centrifugal fan or the hidden danger of sparks is prevented from being generated.
Claims (6)
1. The utility model provides an explosion-proof centrifugal fan, includes base, explosion-proof motor, wind scooper and explosion-proof subassembly, its characterized in that: the explosion-proof motor is installed in the top of base, one side of explosion-proof motor is provided with the wind scooper, the air outlet is installed to the top face of wind scooper, the side end face of wind scooper is provided with the air intake, the air intake department of wind scooper is provided with explosion-proof subassembly, explosion-proof subassembly includes support frame and first filter screen, one side of support frame is provided with first filter screen, the side of support frame runs through and is provided with the screw hole, the top of first filter screen is provided with the air-supply line, and one side of air-supply line is provided with out the tuber pipe, the air-supply line passes through the guide block and is connected with out the tuber pipe intercommunication, the inside of guide block is hollow structure, and the lateral wall of guide block inner chamber is provided with the baffle, air outlet department is provided with the second filter screen.
2. An explosion-proof centrifugal fan according to claim 1, wherein: the anti-explosion motor is characterized in that a transmission shaft is arranged at the output end of the anti-explosion motor, an anti-explosion impeller is arranged in the inner cavity of the air guide cover, a driven wheel is arranged on one side of the anti-explosion impeller, and the transmission shaft is connected with the driven wheel through a transmission belt.
3. An explosion-proof centrifugal fan according to claim 1, wherein: the first filter screen and the second filter screen are arranged in a steel wire cross mode, the pore diameters of the first filter screen and the second filter screen are the same, and the first filter screen and the second filter screen are fixedly connected to the support frame and the air outlet respectively.
4. An explosion-proof centrifugal fan according to claim 2, wherein: the air outlet forms a communication structure with the air inlet through the air guide cover, the support frame forms a detachable bolt connection with the air inlet through the threaded hole, and the transmission shaft forms a belt transmission structure with the driven wheel through the transmission belt.
5. An explosion-proof centrifugal fan according to claim 1, wherein: the air inlet pipe and the air outlet pipe form a communication structure through the flow guide block, the air outlet pipe is equal to the length of the air inlet pipe, the flow guide block is arranged in the middle of the air inlet pipe, and the air inlet end of the air inlet pipe is horn-shaped.
6. An explosion-proof centrifugal fan according to claim 1, wherein: the inner cavity of the air guide cover is provided with an explosion-proof plate, the inside of the air guide block is provided with a baffle, and the explosion-proof plate and the baffle are obliquely arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322157788.4U CN220452341U (en) | 2023-08-11 | 2023-08-11 | Explosion-proof centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322157788.4U CN220452341U (en) | 2023-08-11 | 2023-08-11 | Explosion-proof centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220452341U true CN220452341U (en) | 2024-02-06 |
Family
ID=89724083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322157788.4U Active CN220452341U (en) | 2023-08-11 | 2023-08-11 | Explosion-proof centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220452341U (en) |
-
2023
- 2023-08-11 CN CN202322157788.4U patent/CN220452341U/en active Active
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