CN209761830U - A special roof fan for building smoke prevention and exhaust system - Google Patents

Abstract

The utility model discloses a special roof fan for building smoke prevention and exhaust system, which comprises a metal shell and a metal base, wherein the metal shell is fixedly arranged at the middle position of the upper end of the metal base, the periphery of the metal shell is provided with fixing screws on the metal base, and the rotary block is more convenient to open and more compact to fix through an overhauling rotary plate consisting of finger grooves, rotary blocks, sealing rubber pads, fixing screws and metal insertion blocks, the rotary blocks are opened by pulling down and forcibly, the rotary blocks are opened more conveniently, the fixing is more convenient through the insertion of the metal insertion blocks, the sealing rubber pads are arranged at the outer sides of the metal insertion blocks, thereby playing a good sealing role, the sealing and fixing are more compact, so that the use is more convenient.

Description

A special roof fan for building smoke prevention and exhaust system

technical field

The utility model belongs to the technical field of related roof fans, in particular to a special roof fan for building smoke prevention and exhaust systems.

Background technique

The roof fan is installed on the roof for exhaust and ventilation. Due to the particularity of the installation and use environment, the material and structure of the fan are determined to be special. The roof fan is equipped with a device to prevent the air from flowing backwards after shutdown. Because the fan rotates at high speed under the action of heat pressure, the wind speed in the fan cylinder increases a lot. The reverse rotation of the fan is not good for the start of the motor, and it may be damaged due to excessive starting current. Roof fans should be designed with reliable performance against rain, snow, and sand. Wind, snow, and sand are not like rainwater, because snow and sand will not only enter the fan from the top, but when the outdoor wind speed reaches a certain intensity, It is also possible to enter the fan from below.

The existing roof fan technology has the following problems: the existing roof fan is not very convenient to open the inspection door for maintenance, there is no good auxiliary device to help open, and the fixed inspection door is not sealed very tightly, which makes the connection It is easy to generate gaps, so that it is not very convenient to use.

Utility model content

The purpose of this utility model is to provide a special roof fan for building smoke prevention and exhaust system to solve the problem that the existing roof fan proposed in the background technology is not very convenient when opening the maintenance door for maintenance, and there is no good auxiliary device to help Open, and the fixed access door seal is not a very tight issue.

In order to achieve the above object, the utility model provides the following technical solutions:

A special roof fan for a building smoke prevention and exhaust system, comprising a metal casing and a metal base, the metal casing is installed and fixed on the middle position of the upper end of the metal base, fixing screws are arranged around the metal base on the metal base, the The middle of the front end of the metal casing is provided with an inspection rotating plate, the left side of the inspection rotating plate is located on the metal casing and a power connector is provided, the inside of the metal casing is provided with a metal support frame, and the middle of the metal support frame is located A rotating fan is arranged inside the casing, and fan blades are arranged at the lower end of the rotating fan, and the rotating fan is electrically connected with a power connector, and a metal upper ring is arranged at the upper end of the metal casing, and the middle of the metal upper ring There is a bird-proof grid inside, and the outer side of the bird-proof grid is located on the metal upper ring and is provided with a fixed threaded bolt. The middle of the fixed threaded bolt is provided with a metal hood, and the upper end of the metal hood is provided with a hood arc The cover, the power connector is electrically connected with the external power supply.

Preferably, the inspection rotating plate includes a finger groove, a rotating block, a sealing rubber pad, a fixing screw and a metal insert, a finger groove is provided above the upper end of the rotating block, and a metal As for the plug-in block, a sealing rubber pad is provided on the outer circumference of the metal plug-in block, and fixing screws are arranged on the surrounding of the sealing rubber pad on the rotating block, and the rotating block is connected to the metal shell.

Preferably, the fixed threaded bolt includes a metal suspension ring, a threaded connection post, a first nut and a second nut, the lower end of the metal suspension ring is provided with a threaded connection post, and the lower end of the threaded connection post is provided with a first nut, so A second nut is arranged on the threaded connecting column below the first nut.

Preferably, the fan blade includes an inner shaft column, an outer ring and fan blades, an inner shaft column is arranged in the middle of the lower end of the outer ring, and fan blades are arranged outside the outer ring, the The inner shaft is attached to the rotating fan.

Preferably, the metal base is square, and a safety net and a flap damper are arranged in the middle of the metal base.

Preferably, the metal shell and the metal base are fixedly connected by welding, and the inside of the metal shell is hollow.

Preferably, there are four fixing threaded bolts in total, and all the fixing threaded bolts are fixed on the metal upper ring in parallel.

Preferably, the outer shape and size of the bird-proof grid is equal to the inner shape of the metal upper ring, and the bird-proof grid and the outer side of the metal upper ring are on the same straight line.

Compared with the prior art, the utility model provides a special roof fan for building smoke prevention and exhaust system, which has the following beneficial effects:

The special roof fan for the building smoke prevention and exhaust system of the utility model uses the maintenance rotating plate composed of finger grooves, rotating squares, sealing rubber pads, fixing screws and metal inserts, which makes it more convenient to open and fix when it is fixed. More closely, the inspection rotating plate is connected to the metal shell through the rotating shaft columns at both ends of the rotating block, so that it can be opened and closed well, and when it is opened, by loosening the fixing screws at the four corners, the Put the handle in the finger groove, and then pull down to open the rotating block, which makes the opening more convenient. When fixing, it is more convenient to fix through the insertion of the metal plug, and the outer side of the metal plug is provided with a sealing rubber pad , which plays a very good sealing role, making the sealing and fixing more tightly, so that it is more convenient to use.

Description of drawings

The accompanying drawings are used to provide a further understanding of the utility model, and constitute a part of the description, and are used to explain the utility model together with the embodiments of the utility model, and do not constitute a limitation of the utility model. In the accompanying drawings:

Fig. 1 is a structural schematic diagram of a dedicated roof fan for a building smoke prevention and exhaust system proposed by the utility model;

Fig. 2 is the structure schematic diagram of the maintenance rotating plate that the utility model proposes;

Fig. 3 is the structural representation of the fixed threaded bolt proposed by the utility model;

Fig. 4 is the structural representation of the fan blade proposed by the utility model;

In the figure: 1, fixed threaded bolt; 101, metal suspension ring; 102, threaded connecting column; 103, first nut; 104, second nut; 2, metal hood; 3, bird-proof grid; 4, metal upper ring; 5. Metal shell; 6. Maintenance rotating plate; 61. Finger groove; 62. Rotating block; 63. Sealing rubber pad; 64. Fixing screw; 65. Metal plug; 7. Power connector; 8. Metal base; 9. Arc-shaped cover of hood; 10. Metal support frame; 11. Rotating fan; 12. Fan blade; 121. Internal shaft column; 122. External ring; 123. Fan blade; 13. Fixing screw.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Figure 1-4, the utility model provides a technical solution:

A special roof fan for building smoke prevention and exhaust systems, including a metal casing 5 and a metal base 8, the metal casing 5 is installed and fixed on the middle position of the upper end of the metal base 8, and fixing screws 13 are arranged on the metal base 8 around the metal casing 5 , the middle of the front end of the metal shell 5 is provided with an inspection rotating plate 6, the left side of the inspection rotating plate 6 is located on the metal shell 5 and is provided with a power connector 7, the inside of the metal shell 5 is provided with a metal support frame 10, and the metal support frame 10 A rotating fan 11 is arranged inside the metal casing 5 in the middle, and a fan blade 12 is arranged at the lower end of the rotating fan 11. The rotating fan 11 is electrically connected to the power connector 7, and the upper end of the metal casing 5 is provided with a metal upper ring 4. The middle of the ring 4 is provided with a bird-proof grid 3, and the outer side of the bird-proof grid 3 is located on the metal upper ring 4. A fixed threaded bolt 1 is arranged on the middle of the fixed threaded bolt 1. A metal wind cap 2 is arranged in the middle of the metal wind cap 2, and the upper end of the metal wind cap 2 A hood arc-shaped cover 9 is provided, and a power connector 7 is electrically connected to an external power supply.

Further, the inspection rotating plate 6 includes a finger groove 61, a rotating block 62, a sealing rubber pad 63, a set screw 64 and a metal plug 65, a finger groove 61 is arranged above the upper end of the rotating block 62, and a finger groove 61 is arranged on the lower end of the rotating block 62. There is a metal insert 65, and the outer circumference of the metal insert 65 is provided with a sealing rubber pad 63, and the surrounding of the sealing rubber pad 63 is provided with a fixing screw 64 on the rotating block 62, and the rotating block 62 is connected to the metal shell 5, and the rotating plate is overhauled. 6. Connect to the metal casing 5 by rotating the rotating shaft posts at both ends below the square 62, so that it can be rotated well. When opening, by loosening the fixing screws 64 at the four corners, the handle is placed on the finger In the inside of the groove 61, pull it down hard afterwards, so that it is more convenient to open, and when it is fixed, the insertion of the metal plug 65 makes the fixing more convenient, and the outer side of the metal plug 65 is provided with a sealing rubber pad 63, so that It has a good sealing effect, which makes the sealing and fixing more tightly, making it more convenient to use.

Further, the fixed threaded bolt 1 includes a metal suspension ring 101, a threaded connection post 102, a first nut 103 and a second nut 104, the lower end of the metal suspension ring 101 is provided with a threaded connection post 102, and the lower end of the threaded connection post 102 is provided with a first nut 103 , the lower part of the first nut 103 is located on the threaded connecting column 102 and is provided with a second nut 104. The fixed threaded bolt 1 passes through the metal lifting ring 101 on the upper end of the threaded connecting column 102, so that it can be lifted and moved well, and when fixed , the threaded connecting column 102 is fixed by clamping the first nut 103 and the second nut 104 , which makes the fixing and adjustment more convenient and firm.

Further, the fan blade 12 includes an inner shaft column 121, an outer ring 122 and a fan blade 123. The inner shaft column 121 is arranged in the middle of the lower end of the outer ring 122, and the fan blade 123 is arranged on the outer side of the outer ring 122. The shaft column 121 is connected to the rotating fan 11, and the inner shaft column 121 of the fan blade 12 is connected to the rotating fan 11, so that the rotation of the rotating fan 11 can drive the outer ring 122 and the fan blade 123 to rotate well. , making it more convenient to use.

Further, the metal base 8 is square, and the inner middle of the metal base 8 is provided with a safety net and a flap damper, so that it is more stable when placed, and the inner middle of the metal base 8 is provided with a safety net and a flap damper, so that It can effectively avoid return air when it is stopped.

Further, the metal shell 5 and the metal base 8 are fixedly connected by welding, and the inside of the metal shell 5 is in a hollow state, so that the fixing by welding makes the fixed connection more firm, and the inside of the metal shell 5 becomes a hollow state, thereby It can store objects well.

Further, there are four fixed threaded bolts 1 in total, and all fixed threaded bolts 1 are fixed on the metal upper ring 4 in parallel, which makes the fixing more convenient and makes it more stable during use.

Further, the outer shape and size of the bird-proof grid 3 are equal to the shape and size of the inner side of the metal upper ring 4, and the outer sides of the bird-proof grid 3 and the metal upper ring 4 are on the same straight line, which is more convenient when installing, and the bird-proof net The outer sides of the grid 3 and the metal upper ring 4 are on the same straight line, so that there will be no hindrance during use.

The working principle and application process of the utility model: After the utility model is installed, the special roof fan for the building smoke prevention and exhaust system can be installed on the designated position of the roof. During installation, keep the level of the roof installation area, and the special roof fan for building smoke prevention and exhaust system is fixed by four fixing screws 13 on the metal base 8, which makes the fixed installation more convenient. And the inner center of the metal base 8 is provided with a safety net and a flap damper, so that return air can be effectively avoided when the use is stopped. After installation, connect the power connector 7 and the power supply of the external control device, so as to control and use. When in use, turn on the external switch, so that the rotating fan 11 on the metal support frame 10 inside the metal shell 5 rotates, so that the rotating fan 11 of the model HF-200P will drive the fan blade 12 to rotate, thereby passing the fan blade The rotation of 12 realizes the circulation of air. When placed, the metal hood 2 fixed by the fixed threaded bolt 1 and the hood arc cover 9 at the top can well block external dust and rain, and the bird-proof grid 3 on the metal upper ring 4 can effectively avoid birds. son's entry. And when carrying out the maintenance of rotating blower fan 11, just can open the inspection rotating plate 6 on the metal casing 5 and carry out inspection. Like this by the overhaul rotating plate 6 that finger groove 61, rotating block 62, gasket 63, fixing screw 64 and metal insert block 65 are formed, make when opening more convenient, and more tightly when fixing. And the inspection rotating plate 6 is connected in the inner groove of the metal shell 5 by the rotating shaft posts at the two ends below the rotating block 62, so that the opening and closing rotation can be carried out well, and when opening, by loosening the four corners The fixing screw 64, so that the handle is placed inside the finger groove 61, and then the rotating block 62 is pulled down to open the rotating block 62, which makes opening more convenient, and when fixing, the insertion of the metal plug 65 makes the fixing more convenient, and The outer side of the metal plug 65 is provided with a sealing rubber pad 63, which has a good sealing effect and makes the sealing and fixing more tightly, so that it is more convenient in use.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes and modifications can be made to these embodiments without departing from the principle and spirit of the present invention , replacements and modifications, the scope of the present utility model is defined by the appended claims and their equivalents.

Claims (8)

1. A dedicated roof fan for building smoke prevention and exhaust systems, comprising a metal casing (5) and a metal base (8), characterized in that: the metal casing (5) is installed and fixed on the middle position of the upper end of the metal base (8) , the surroundings of the metal shell (5) are provided with fixing screws (13) on the metal base (8), and the middle of the front end of the metal shell (5) is provided with an inspection rotating plate (6), and the inspection rotating plate ( 6) The left side of the metal shell (5) is provided with a power connector (7), the inside of the metal shell (5) is provided with a metal support frame (10), and the middle of the metal support frame (10) is located A rotating fan (11) is arranged inside the metal casing (5), and a fan blade (12) is arranged at the lower end of the rotating fan (11), and the rotating fan (11) is electrically connected to the power connector (7), The upper end of the metal shell (5) is provided with a metal upper ring (4), the middle inside of the metal upper ring (4) is provided with an anti-bird grid (3), and the outside of the anti-bird grid (3) A fixed threaded bolt (1) is arranged on the metal upper ring (4), a metal hood (2) is arranged in the middle of the fixed threaded bolt (1), and a hood arc-shaped cover is arranged on the upper end of the metal hood (2) (9), the power connector (7) is electrically connected to an external power supply. 2. A special roof fan for building smoke prevention and exhaust system according to claim 1, characterized in that: the maintenance rotating plate (6) includes a finger groove (61), a rotating block (62), a sealing rubber pad ( 63), fixing screws (64) and metal inserts (65), finger grooves (61) are provided above the upper end of the rotating block (62), and a metal insert is provided in the middle of the lower end of the rotating block (62) (65), the outer circumference of the metal plug (65) is provided with a sealing rubber pad (63), and the surroundings of the sealing rubber pad (63) are provided with fixing screws (64) on the rotating block (62), so Said rotating block (62) is connected on the metal casing (5). 3. A special roof fan for building smoke prevention and exhaust system according to claim 1, characterized in that: the fixed threaded bolt (1) includes a metal suspension ring (101), a threaded connecting column (102), a first nut ( 103) and a second nut (104), the lower end of the metal suspension ring (101) is provided with a threaded connecting post (102), and the lower end of the threaded connecting post (102) is provided with a first nut (103), the second A second nut (104) is arranged on the threaded connecting column (102) under the first nut (103). 4. A special roof fan for building smoke prevention and exhaust system according to claim 1, characterized in that: the fan blade (12) includes an inner shaft column (121), an outer ring (122) and fan blades (123), the middle of the lower end of the outer ring (122) is provided with an inner shaft column (121), the outer side of the outer ring (122) is provided with fan blades (123), and the inner shaft column (121 ) is connected on the rotating blower fan (11). 5. A special roof fan for building smoke prevention and exhaust system according to claim 1, characterized in that: the metal base (8) is square, and the inner middle of the metal base (8) is provided with a safety net and Loose leaf damper. 6. A special roof fan for building smoke prevention and exhaust system according to claim 1, characterized in that: the metal casing (5) and the metal base (8) are fixedly connected by welding, and the metal casing (5) The inside becomes a hollow state. 7. A special roof fan for building smoke prevention and exhaust system according to claim 1, characterized in that: there are four fixed threaded bolts (1) in total, and the fixed threaded bolts (1) are all fixed in parallel On the metal upper ring (4). 8. A special roof fan for building smoke prevention and exhaust system according to claim 1, characterized in that: the outer shape and size of the bird-proof grid (3) is equal to the inner shape and size of the metal upper ring (4), and the The outer sides of the bird-proof grid (3) and the metal upper ring (4) are on the same straight line.