CN212717391U - Prevent inside air backflow's centrifugal fan - Google Patents
Prevent inside air backflow's centrifugal fan Download PDFInfo
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- CN212717391U CN212717391U CN202021112721.9U CN202021112721U CN212717391U CN 212717391 U CN212717391 U CN 212717391U CN 202021112721 U CN202021112721 U CN 202021112721U CN 212717391 U CN212717391 U CN 212717391U
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- centrifugal fan
- install bin
- rods
- fixedly installed
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Abstract
The utility model belongs to the technical field of centrifugal fan, especially, be a prevent centrifugal fan of inside air backward flow, to being welded connection mostly between current centrifugal fan and the install bin to cause centrifugal fan to dismantle comparatively difficult problem, the scheme is presented now, and it includes centrifugal fan, centrifugal fan's bottom fixed mounting has first diaphragm, and the top both sides of first diaphragm have all been seted up and have been found the hole, and two equal movable mounting in inboard that found the hole have the outside of carriage release lever, and the bottom movable mounting of first diaphragm has the install bin, and the bottom of two carriage release levers all extends to the inside of install bin, and two threaded rods are installed in the internal rotation of install bin. The utility model discloses make installation and dismantlement that centrifugal fan can be fine, novel carriage release lever through setting up when the carriage release lever inserts the inside of establishing at the install bin to make centrifugal fan can't take place just to move, make its top at the install bin that can be stable.
Description
Technical Field
The utility model relates to a centrifugal fan technical field especially relates to a prevent centrifugal fan of inside air reflux.
Background
The centrifugal fan is a driven fluid machine which increases the pressure of gas and discharges the gas by means of input mechanical energy. Centrifugal fans are widely used in ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and draught of boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances; drying and selecting grains; wind tunnel wind source and air cushion boat inflation and propulsion.
Most of the existing centrifugal fans are connected with the installation box in a welding mode, so that the centrifugal fans are difficult to disassemble, and therefore a centrifugal fan installation structure is provided for solving the problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the most welded connection that is between current centrifugal fan and the install bin to cause centrifugal fan to dismantle comparatively difficult shortcoming, and the centrifugal fan who prevents inside air backward flow who provides.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a centrifugal fan for preventing internal air from flowing back comprises a centrifugal fan, wherein a first transverse plate is fixedly installed at the bottom of the centrifugal fan, vertical holes are formed in two sides of the top of the first transverse plate, the inner sides of the two vertical holes are movably installed on the outer sides of movable rods, an installation box is movably installed at the bottom of the first transverse plate, the bottom ends of the two movable rods extend into the installation box, two threaded rods are rotatably installed in the installation box, the bottom ends of the two threaded rods extend to the outer side of the installation box, the outer sides of the two threaded rods are in threaded connection with a same movable plate, chain wheels are fixedly installed on the outer sides of the two threaded rods, a same chain is in transmission connection with the two chain wheels, the bottom ends of the two movable rods are movably connected with the inner wall of the bottom of the installation box, the inner parts of the two movable rods are movably installed on the outer sides of horizontal rods, one end, far away from, the equal fixed mounting in one side that two baffles are close to each other has the one end of two third springs, and the other end fixed mounting of third spring is in the outside of install bin, and the equal movable mounting in inside of two horizon bars is in the outside of montant, and the bottom of two montants all extends to the outside of install bin and with movable plate fixed connection.
Preferably, the equal fixed mounting in the bottom of second spring in top both sides of install bin, the top fixed mounting of second spring has the second diaphragm, and two second diaphragms are fixed mounting respectively on the top of the carriage release lever that corresponds, and through the carriage release lever that sets up, thereby the carriage release lever passes through the through-hole and inserts in the inside of install bin for centrifugal fan obtains certain restriction.
Preferably, centrifugal fan's top intercommunication has the play dryer, the inside sliding seal of play dryer is connected in the outside of piston, the bottom fixed mounting of piston is on the top of first spring, the bottom fixed mounting of first spring is on the inner wall of play dryer, through the piston that sets up, thereby make inside produce certain atmospheric pressure when centrifugal fan works, thereby promote piston upward movement, thereby make the inside gas outgoing of centrifugal fan, when centrifugal fan stop work, thereby work that first spring resets drives piston downstream, thereby prevent that external gas from flowing to the inside possibility of centrifugal fan.
Preferably, the bottom fixed mounting of piston has thin pole, and the outside slidable mounting of thin pole is in the inboard of cavity section of thick bamboo, and the bottom fixed mounting of cavity section of thick bamboo is in the inside of tuber pipe, through the thin pole that sets up to make the piston can't take place the possibility of just moving.
Preferably, the rear side fixed mounting of centrifugal fan has the mounting bracket, and mounting bracket fixed mounting is at the top of first diaphragm, through the mounting bracket that sets up to make centrifugal fan and first diaphragm fixed mounting.
Preferably, the bottom fixed mounting of one of two threaded rods is at the top of carousel, and the bottom fixed mounting of carousel has the handle, and is more laborsaving when making the manual work rotate the threaded rod through the handle that sets up.
In the utility model, the centrifugal fan for preventing the internal air from flowing back drives the movable plate and the two vertical rods to move upwards when the threaded rod is rotated manually through the arranged threaded rod, so that the outer sides of the two vertical rods move into the corresponding horizontal rods, thereby playing a role in limiting the horizontal rods, preventing the horizontal rods from moving in the horizontal direction, and stably installing the centrifugal fan at the top of the installation box;
the utility model discloses a carriage release lever that sets up when the carriage release lever inserts the inside of establishing at the install bin to make centrifugal fan can't take place just to move, make its top of installing at the install bin that can be stable.
Drawings
Fig. 1 is a schematic structural view of a centrifugal fan for preventing internal air from flowing back according to the present invention;
fig. 2 is a schematic structural diagram of a portion a of a centrifugal fan for preventing backflow of internal air according to the present invention;
fig. 3 is a schematic structural diagram of a part B of the centrifugal fan for preventing the internal air from flowing back according to the present invention.
In the figure: 1. a centrifugal fan; 2. an air outlet cylinder; 3. a first transverse plate; 4. installing a box; 5. a piston; 6. a first spring; 7. a thin rod; 8. a hollow cylinder; 9. moving the plate; 10. a vertical rod; 11. a threaded rod; 12. a sprocket; 13. a chain; 14. a travel bar; 15. a second spring; 16. a second transverse plate; 17. a horizontal bar; 18. a baffle plate; 19. and a third spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-3, a centrifugal fan for preventing internal air from flowing back comprises a centrifugal fan 1, a first transverse plate 3 is fixedly installed at the bottom of the centrifugal fan 1, vertical holes are respectively formed at two sides of the top of the first transverse plate 3, the inner sides of the two vertical holes are movably installed at the outer sides of moving rods 14, an installation box 4 is movably installed at the bottom of the first transverse plate 3, the bottom ends of the two moving rods 14 extend into the installation box 4, two threaded rods 11 are rotatably installed in the installation box 4, the bottom ends of the two threaded rods 11 extend to the outer side of the installation box 4, the outer sides of the two threaded rods 11 are in threaded connection with a same moving plate 9, chain wheels 12 are fixedly installed at the outer sides of the two threaded rods 11, the same chain 13 is in transmission connection with the two chain wheels 12, the bottom ends of the two moving rods 14 are movably connected with the inner wall at the bottom of the installation box 4, the inner parts of, the one end that two horizontal poles 17 kept away from each other all extends to the outside of installing box 4 and respectively fixed mounting has baffle 18, and the equal fixed mounting in one side that two baffles 18 are close to each other has the one end of two third springs 19, and the other end fixed mounting of third spring 19 is in the outside of installing box 4, and the equal movable mounting in inside of two horizontal poles 17 is in the outside of montant 10, and the bottom of two montants 10 all extends to the outside of installing box 4 and with movable plate 9 fixed connection.
The utility model discloses in, the equal fixed mounting in the bottom of second spring 15 in the top both sides of install bin 4, the top fixed mounting of second spring 15 has second diaphragm 16, and two second diaphragms 16 fixed mounting are respectively on the top of the carriage release lever 14 that corresponds, through the carriage release lever 14 that sets up, thereby carriage release lever 14 inserts in install bin 4's inside through the through-hole for centrifugal fan 1 obtains certain restriction.
The utility model discloses in, centrifugal fan 1's top intercommunication has play dryer 2, the inside sliding seal who goes out dryer 2 connects in the outside of piston 5, the bottom fixed mounting of piston 5 is on the top of first spring 6, the bottom fixed mounting of first spring 6 is on the inner wall of play dryer 2, piston 5 through setting up, thereby make inside produce certain atmospheric pressure when centrifugal fan 1 works, thereby promote piston 5 upward movement, thereby make the inside gas outgoing of centrifugal fan 1, when centrifugal fan 1 stop work, thereby first spring 6 drives piston 5 downstream, thereby prevent that external gas from flowing to the inside possibility of centrifugal fan 1.
The utility model discloses in, the bottom fixed mounting of piston 5 has thin pole 7, and the outside slidable mounting of thin pole 7 is in the inboard of cavity section of thick bamboo 8, and the bottom fixed mounting of cavity section of thick bamboo 8 is in the inside of play dryer 2, through the thin pole 7 that sets up to make piston 5 can't take place the possibility of just moving.
The utility model discloses in, centrifugal fan 1's rear side fixed mounting has the mounting bracket, and mounting bracket fixed mounting is at the top of first diaphragm 3, through the mounting bracket that sets up to make centrifugal fan 1 and first diaphragm 3 fixed mounting.
The utility model discloses in, the bottom fixed mounting of a threaded rod 11 in two threaded rods 11 is at the top of carousel, and the bottom fixed mounting of carousel has the handle, and is more laborsaving when making artifical rotation threaded rod 11 through the handle that sets up.
The working principle of the centrifugal fan is as follows: firstly, the first transverse plate 3 is placed on the top of the installation box 4, so that the through holes on two sides of the top of the first transverse plate 3 can correspond to the first through holes on two sides of the top of the installation box 4, then the two moving rods 14 are inserted into the installation box 4 through the through holes, so that the convex blocks at the bottom of the moving rods 14 are inserted into the grooves at the bottom of the installation box 4, so that the centrifugal fan 1 is limited to a certain extent, the third spring 19 drives the two horizontal rods 17 to move in the horizontal direction, so that the sides, close to each other, of the two horizontal rods 17 are inserted into the corresponding moving rods 14, then the threaded rod 11 is manually rotated to drive the moving plate 9 and the two vertical rods 10 to move upwards, so that the outer sides of the two vertical rods 10 move into the corresponding horizontal rods 17, thereby limiting effect on the horizontal rods 17 is achieved, and the horizontal rods 17 are prevented from moving in the horizontal direction, thereby play the limiting action to the horizon bar 17, prevent that the horizon bar 17 from taking place the motion of horizontal direction, thereby make the top of installing at install bin 4 that centrifugal fan 1 can be stable, secondly through the piston 5 that sets up, thereby make inside produce certain atmospheric pressure when centrifugal fan 1 works, thereby promote piston 5 upward movement, thereby make the inside gas outgoing of centrifugal fan 1, when centrifugal fan 1 stop work, thereby first spring 6 carries out the work that resets and drives piston 5 downstream, thereby prevent that external gas from flowing to the inside possibility of centrifugal fan 1.
Claims (6)
1. The centrifugal fan capable of preventing internal air from flowing back comprises a centrifugal fan (1) and is characterized in that a first transverse plate (3) is fixedly installed at the bottom of the centrifugal fan (1), vertical holes are formed in two sides of the top of the first transverse plate (3), the inner sides of the two vertical holes are movably installed on the outer sides of moving rods (14), an installation box (4) is movably installed at the bottom of the first transverse plate (3), the bottom ends of the two moving rods (14) extend into the installation box (4), two threaded rods (11) are rotatably installed in the installation box (4), the bottom ends of the two threaded rods (11) extend into the outer side of the installation box (4), the outer side threads of the two threaded rods (11) are connected with a same moving plate (9), chain wheels (12) are fixedly installed on the outer sides of the two threaded rods (11), and a same chain (13) is movably connected onto the two chain wheels (12), the bottom of two movable rods (14) all with the bottom inner wall swing joint of install bin (4), the inside equal movable mounting of two movable rods (14) is in the outside of horizon bar (17), the one end that two horizon bars (17) kept away from each other all extends to the outside of install bin (4) and fixed mounting respectively has baffle (18), the equal fixed mounting in one side that two baffles (18) are close to each other has the one end of two third springs (19), the other end fixed mounting of third spring (19) is in the outside of install bin (4), the inside equal movable mounting of two horizon bars (17) is in the outside of montant (10), the bottom of two montants (10) all extends to the outside of install bin (4) and with movable plate (9) fixed connection.
2. The centrifugal fan for preventing backflow of internal air according to claim 1, wherein both sides of the top of the mounting box (4) are fixedly mounted at the bottom end of the second spring (15), the top end of the second spring (15) is fixedly mounted with a second transverse plate (16), and the two second transverse plates (16) are respectively fixedly mounted at the top ends of the corresponding moving rods (14).
3. The centrifugal fan capable of preventing the backflow of the internal air according to claim 1, wherein the top of the centrifugal fan (1) is communicated with the air outlet cylinder (2), the inside of the air outlet cylinder (2) is connected to the outside of the piston (5) in a sliding and sealing manner, the bottom of the piston (5) is fixedly installed at the top end of the first spring (6), and the bottom end of the first spring (6) is fixedly installed on the inner wall of the air outlet cylinder (2).
4. The centrifugal fan for preventing the backflow of the internal air as claimed in claim 3, wherein the bottom of the piston (5) is fixedly provided with the thin rod (7), the outer side of the thin rod (7) is slidably arranged on the inner side of the hollow cylinder (8), and the bottom of the hollow cylinder (8) is fixedly arranged inside the air outlet cylinder (2).
5. The centrifugal fan for preventing backflow of internal air according to claim 1, wherein a mounting bracket is fixedly installed at the rear side of the centrifugal fan (1), and the mounting bracket is fixedly installed at the top of the first cross plate (3).
6. The centrifugal fan for preventing backflow of internal air as claimed in claim 1, wherein a bottom end of one threaded rod (11) of the two threaded rods (11) is fixedly installed at a top of the turn table, and a handle is fixedly installed at a bottom of the turn table.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021112721.9U CN212717391U (en) | 2020-06-16 | 2020-06-16 | Prevent inside air backflow's centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021112721.9U CN212717391U (en) | 2020-06-16 | 2020-06-16 | Prevent inside air backflow's centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212717391U true CN212717391U (en) | 2021-03-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021112721.9U Active CN212717391U (en) | 2020-06-16 | 2020-06-16 | Prevent inside air backflow's centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212717391U (en) |
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2020
- 2020-06-16 CN CN202021112721.9U patent/CN212717391U/en active Active
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