CN216950452U - Discontinuous air duct - Google Patents
Discontinuous air duct Download PDFInfo
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- CN216950452U CN216950452U CN202220302922.8U CN202220302922U CN216950452U CN 216950452 U CN216950452 U CN 216950452U CN 202220302922 U CN202220302922 U CN 202220302922U CN 216950452 U CN216950452 U CN 216950452U
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- air inlet
- guide cylinder
- inlet cover
- air
- fan
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Abstract
The utility model relates to the technical field of air ducts, in particular to a discontinuous air duct, which comprises: the air inlet cover, the expansion cylinder and the guide cylinder are sequentially connected and fixed from left to right; the air inlet cover is provided with a first open slot, and the air inlet cover is welded and fixed on two sides of the position of the first open slot through a first welding frame; a second groove is formed in the guide cylinder, and the guide cylinder is welded and fixed at the positions on two sides of the second groove through a second welding frame; the air inlet cover is provided with an air inlet assembly at the first slotting position, the inside of the expansion cylinder and the second slotting position of the guide cylinder; the discontinuous air duct is designed by structural improvement, so that the sucked hot air quantity can be increased while the hot air quantity suction is accelerated; and be equipped with the fluting moreover, the positive negative nip that the air inlet subassembly of being convenient for rotated and form and atmospheric convection, avoid interior hourglass, can reduce wind pressure and amount of wind loss.
Description
Technical Field
The utility model relates to the technical field of air ducts, in particular to a discontinuous air duct.
Background
The air duct is a main air guiding device for local ventilation, and includes flexible air ducts made of canvas, artificial leather, plastic, rubber and the like, and metal air ducts made of sheet iron and aluminum plates according to different manufacturing materials. The flexible air duct is light in weight, simple in connection and suspension, but large in ventilation resistance; the metal wind tube has small ventilation resistance but occupies a larger cross-sectional area of the roadway.
When the air duct is used, the air duct is generally matched with an axial flow fan for use, the axial flow fan is arranged on one side of the air duct, when the air duct is used, only the axial flow fan needs to be started, the axial flow fan rotates at a high speed, negative pressure is generated in the air duct, and then hot air in a tunnel or a mine is sucked in and exhausted through the air duct with one end communicated; the operation mode of the air duct has certain problems, for example, the axial flow fan is a single fan, and the negative pressure generated by rotation is small, so that the amount of air sucked is small, and the acceleration of the discharge of hot air in a tunnel or a mine is not facilitated; secondly, because the air duct is a continuous air duct, no gap exists, a positive pressure region and a negative pressure region generated by the axial flow fan cannot convect with the atmosphere, internal leakage is easy, and air pressure and air volume loss are large; and the noise generated in the process of high-speed rotation of the axial flow fan is also larger.
In view of the above problems in the prior art, the present invention is directed to a discontinuous air duct.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to a discontinuous air duct to solve the above problems.
In order to achieve the purpose, the utility model provides the following technical scheme:
a discontinuous air duct, comprising:
the air inlet cover, the expansion cylinder and the guide cylinder are sequentially connected and fixed from left to right, the interior of the air inlet cover, the interior of the expansion cylinder and the interior of the guide cylinder are all in a hollow state, and the interior of the air inlet cover, the interior of the expansion cylinder and the interior of the guide cylinder are sequentially communicated;
the air inlet cover is provided with a first open slot, and the two sides of the air inlet cover at the position where the first open slot is formed are welded and fixed through a first welding frame;
the expansion cylinder is in a horn opening shape, and the diameters of the inside of the expansion cylinder are sequentially reduced from left to right;
a second groove is formed in the guide cylinder, the guide cylinder is welded and fixed at the positions on two sides of the second groove through a second welding frame, and a flange is arranged at the tail end of the guide cylinder;
the air inlet cover is provided with an air inlet component at the first slotting position, the inside of the expansion cylinder and the second slotting position of the guide cylinder.
As a further scheme of the utility model: the air inlet assembly comprises a rotating shaft and a motor, reinforcing ribs are arranged at the front end of the air inlet cover, the number of the reinforcing ribs is four, a shaft seal is fixedly installed at the position, facing the center of the air inlet cover, of the four reinforcing ribs, one end of the rotating shaft is movably installed inside the shaft seal on the inner side of the air inlet cover, the other end of the rotating shaft penetrates through the expansion cylinder and then is connected with the output end of the motor inside the guide cylinder, the motor is installed and fixed on the filter plate, and the filter plate is installed and fixed inside the guide cylinder; a first end is arranged at the middle position of the first slot of the rotating shaft, a first fan is fixedly installed on the outer side of the first end, and the length of the first fan is longer than the inner diameter of the air inlet cover; the rotating shaft is provided with a second end in the middle of the second groove, a second fan is fixedly installed on the outer side of the second end, and the length of the second fan is longer than the inner diameter of the guide cylinder.
As a further scheme of the utility model: the structure composition of first fan is the same with the structure composition of second fan, and first fan includes six blades, and six blades distribute in the first end outside, are the slope installation, and the blade is at between 30 ~ 60 with the contained angle that first end formed, has seted up the shaft hole in the middle of the first end.
Compared with the prior art, the utility model has the beneficial effects that:
the discontinuous air duct is structurally improved and designed by the original continuous air duct, so that the air inlet cover is arranged at the first slotting position and the air duct is provided with the air inlet components at the second slotting position, and the whole discontinuous air duct has the following advantages:
the vacuum negative pressure generated in the discontinuous air guide cylinder can be increased, the suction of hot air quantity is accelerated, and the sucked hot air quantity can be increased;
the air inlet assembly is provided with the slots, so that a positive pressure area and a negative pressure area formed by rotation of the air inlet assembly can convect with the atmosphere conveniently, internal leakage is avoided, and air pressure and air volume loss can be reduced;
and thirdly, the generation of vortex at the outer end of the air inlet assembly rotating at a high speed is avoided, and the noise in the operation process of the air inlet assembly is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention.
Fig. 1 is a schematic structural view of a discontinuous air duct according to an embodiment of the present invention.
Fig. 2 is a schematic view of an internal structure of a discontinuous air guiding duct according to an embodiment of the present invention.
Fig. 3 is a schematic view of a first fan structure of a discontinuous air duct according to an embodiment of the present invention.
Fig. 4 is a side view of an air inlet cover of a discontinuous air guiding duct in accordance with an embodiment of the present invention.
In the figure: 1-a first welding frame, 2-a first fan, 3-a first slot, 4-a rotating shaft, 5-a first end, 6-an air inlet cover, 7-a capacity expansion cylinder, 8-a guide cylinder, 9-a second welding frame, 10-a second fan, 11-a second slot, 12-a second end, 13-a flange, 14-a motor, 15-an axle hole, 16-a reinforcing rib and 17-an axle seal.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
Examples
Referring to fig. 1 and fig. 2, in an embodiment of the present invention, a discontinuous air guiding duct includes:
the air inlet cover 6, the expansion cylinder 7 and the guide cylinder 8 are sequentially connected and fixed from left to right, the interior of the air inlet cover 6, the interior of the expansion cylinder 7 and the interior of the guide cylinder 8 are all in a hollow state, and the interior of the air inlet cover 6, the interior of the expansion cylinder 7 and the interior of the guide cylinder 8 are sequentially communicated;
the air inlet cover 6 is provided with a first open slot 3, and the two sides of the air inlet cover 6 at the position where the first open slot 3 is arranged are welded and fixed through a first welding frame 1;
the expansion cylinder 7 is in a horn opening shape, and the diameters of the inside of the expansion cylinder 7 are sequentially reduced from left to right;
a second groove 11 is formed in the guide cylinder 8, the guide cylinder 8 is welded and fixed at the positions on two sides of the second groove 11 through a second welding frame 9, and a flange 13 is arranged at the tail end of the guide cylinder 8;
the air inlet cover 6 is provided with air inlet components at the position of the first open slot 3, the inside of the expansion cylinder 7 and the position of the guide cylinder 8 at the position of the second open slot 11;
when the discontinuous air guide cylinder is used, the flange 13 arranged on one side of the guide cylinder 8 is fixedly installed with the corresponding flange arranged at one end of the other air guide cylinder, and then the whole discontinuous air guide cylinder is communicated with the other air guide cylinder; then, the air inlet component is started, and the air inlet component operates to generate vacuum negative pressure in the air inlet cover 6, the expansion cylinder 7 and the guide cylinder 8 at the same time, so that hot air in the tunnel or the mine can be sucked in and then is discharged from the air cylinder communicated with the other end after sequentially passing through the air inlet cover 6, the expansion cylinder 7 and the guide cylinder 8;
the large-diameter air inlet cover 6 is convenient for increasing air suction volume, and the expansion cylinder 7 in a horn mouth state can accelerate the passing of hot air;
because the air inlet components are arranged at the positions of the air inlet cover 6 and the first open slot 3 and the position of the guide cylinder 8 and the second open slot 11, firstly, the vacuum negative pressure generated in the discontinuous air guide cylinder can be increased, the suction of the hot air volume is accelerated, and the sucked hot air volume can also be increased; secondly, the slotting is arranged, so that the positive and negative pressure areas formed by the rotation of the air inlet component can convect with the atmosphere, the internal leakage is avoided, and the loss of air pressure and air volume can be reduced; thirdly, the generation of the vortex at the outer end of the air inlet assembly rotating at a high speed is avoided, and the noise in the operation process of the air inlet assembly is reduced.
Referring to fig. 1, 2 and 4, further, the air intake assembly includes a rotating shaft 4 and a motor 14, the front end of the air intake hood 6 is provided with four reinforcing ribs 16, the four reinforcing ribs 16 are fixed to a shaft seal 17 at positions facing the center of the air intake hood 6, one end of the rotating shaft 4 is movably mounted inside the shaft seal 17 inside the air intake hood 6, the other end of the rotating shaft 4 passes through the expansion cylinder 7 and then is connected to the output end of the motor 14 inside the draft tube 8, the motor 14 is mounted and fixed on a filter plate, and the filter plate is mounted and fixed inside the draft tube 8; a first end 5 is arranged at the middle position of the first open slot 3 of the rotating shaft 4, a first fan 2 is fixedly installed on the outer side of the first end 5, and the length of the first fan 2 is longer than the inner diameter of the air inlet cover 6; a second end 12 is arranged at the middle position of the second slot 11 of the rotating shaft 4, a second fan 10 is fixedly installed on the outer side of the second end 12, and the length of the second fan 10 is longer than the inner diameter of the guide cylinder 8;
when the air inlet component is used, the motor 14 is started, the motor 14 operates to drive the rotating shaft 4 to rotate at a high speed, when the rotating shaft 4 rotates at a high speed, the first fan 2 arranged on the rotating shaft 4 is simultaneously driven to rotate at a high speed in the first slot 3, the second fan 10 arranged on the rotating shaft 4 rotates at a high speed in the second slot 11, and then vacuum negative pressure is simultaneously generated in the air inlet cover 6 and the guide cylinder 8 so as to be used for sucking hot air in a tunnel or a mine; because the air quantity is sucked from the front side and the rear side, the circulation speed of hot air in the discontinuous air guide cylinder is accelerated, and the ventilation and heat dissipation effects in the tunnel or the mine are improved; moreover, the groove is arranged, so that a positive and negative pressure area formed by the rotation of the first fan 2 and the rotation of the second fan 10 is convected with the atmosphere, the internal leakage is avoided, and the loss of wind pressure and wind volume can be reduced; third, the generation of the eddy current at the outer end of the first fan 2 and the outer end of the second fan 10 which rotate at high speed is avoided, and the noise in the operation process of the first fan 2 and the second fan 10 which rotate at high speed is reduced;
referring to fig. 3, specifically, the structural composition of the first fan 2 is the same as that of the second fan 10, the first fan 2 includes six blades, the six blades are distributed outside the first end 5 and are installed in an inclined manner, an included angle formed between each blade and the first end 5 is 30-60 degrees, a shaft hole 15 is formed in the middle of the first end 5, and the inside of the shaft hole 15 is used for passing through the rotating shaft 4;
under the condition that the installation angle of the outlet of each blade, the form of the blades and the rotating speed of the fan are not changed, and under the condition that the number of the blades is between 3 and 6, the total pressure and the dynamic pressure of the fan are obviously increased along with the increase of the number of the blades of the fan, so that the performance of the fan assembled by the blades with the number of 6 is also optimal;
in the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (3)
1. A discontinuous air duct, comprising: the air inlet cover (6), the expansion cylinder (7) and the guide cylinder (8) are sequentially connected and fixed from left to right, the interior of the air inlet cover (6), the interior of the expansion cylinder (7) and the interior of the guide cylinder (8) are all in a hollow state, and the interior of the air inlet cover (6), the interior of the expansion cylinder (7) and the interior of the guide cylinder (8) are sequentially communicated; the method is characterized in that:
the air inlet cover (6) is provided with a first open slot (3), and the air inlet cover (6) is welded and fixed on two sides of the position of the first open slot (3) through a first welding frame (1); the diameter of the expansion cylinder (7) is gradually reduced from left to right in the expansion cylinder (7);
a second groove (11) is formed in the guide cylinder (8), the guide cylinder (8) is welded and fixed at the positions of two sides of the second groove (11) through a second welding frame (9), and a flange (13) is arranged at the tail end of the guide cylinder (8); air inlet components are arranged at the positions of the first open slot (3) of the air inlet cover (6), the inside of the expansion cylinder (7) and the second open slot (11) of the guide cylinder (8).
2. The discontinuous air duct of claim 1, wherein: the air inlet assembly comprises a rotating shaft (4) and a motor (14), reinforcing ribs (16) are arranged at the front end of an air inlet cover (6), the number of the reinforcing ribs (16) is four, a shaft seal (17) is fixedly arranged at the position, facing the center of the air inlet cover (6), of the four reinforcing ribs (16), one end of the rotating shaft (4) is movably arranged inside the shaft seal (17) on the inner side of the air inlet cover (6), the other end of the rotating shaft (4) penetrates through a containing expansion cylinder (7) and then is connected with the output end of the motor (14) inside a guide cylinder (8), the motor (14) is fixedly arranged on a filter plate, and the filter plate is fixedly arranged inside the guide cylinder (8); a first end (5) is arranged at the middle position of the first open groove (3) of the rotating shaft (4), and a first fan (2) is fixedly installed on the outer side of the first end (5); the middle position of the rotating shaft (4) in the second slot (11) is provided with a second end (12), and a second fan (10) is fixedly installed on the outer side of the second end (12).
3. The discontinuous air duct of claim 2, wherein: the structure of first fan (2) is constituteed the same with the structure of second fan (10), and first fan (2) includes six blades, and six blades distribute in first end (5) outside, are the slope installation, and the blade is at between 30 ~ 60 with the contained angle that first end (5) formed, and shaft hole (15) have been seted up in the middle of first end (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220302922.8U CN216950452U (en) | 2022-02-15 | 2022-02-15 | Discontinuous air duct |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220302922.8U CN216950452U (en) | 2022-02-15 | 2022-02-15 | Discontinuous air duct |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216950452U true CN216950452U (en) | 2022-07-12 |
Family
ID=82291587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220302922.8U Active CN216950452U (en) | 2022-02-15 | 2022-02-15 | Discontinuous air duct |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216950452U (en) |
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2022
- 2022-02-15 CN CN202220302922.8U patent/CN216950452U/en active Active
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