CN211144548U

CN211144548U - Ventilation unit is used in tunnel construction

Info

Publication number: CN211144548U
Application number: CN201921256257.8U
Authority: CN
Inventors: 张丽辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-05
Filing date: 2019-08-05
Publication date: 2020-07-31
Anticipated expiration: 2029-08-05

Abstract

The utility model discloses a ventilation device for tunnel construction, which comprises a jet flow ventilator and a ventilation pipe; the inner wall of efflux ventilation blower is provided with servo motor, and servo motor is connected with the flabellum through the coupling transmission the outer wall welding of efflux ventilation blower has the mounting bracket, the air intake welding of efflux ventilation blower has the protection network, the air outlet of efflux ventilation blower passes through flange and blast pipe bolted connection. The utility model discloses in, this ventilation unit is through the shock attenuation gasket that sets up, traditional rigid connection fixed mode has been avoided, the vibrations power that produces when can be to tunnel construction plays effectual elastic buffer, thereby reduce the resonance influence that external vibrations power caused ventilation unit, ventilation unit's operation safety and stability has been ensured, also can play effectual elastic buffer to the vibrations power that produces when the tunnel construction, thereby reduce the resonance influence that external vibrations power caused ventilation unit, ventilation unit's operation safety and stability has been ensured.

Description

Ventilation unit is used in tunnel construction

Technical Field

The utility model relates to a tunnel construction ventilation technical field especially relates to a ventilation unit for tunnel construction.

Background

The jet fan is a special axial flow fan, is mainly used in longitudinal ventilation systems of tunnels such as highways, railways, subways and the like, and provides all thrust; the tunnel blasting dust removal device can also be used for sensitive parts in a semi-transverse ventilation system or a transverse ventilation system, such as an inlet and an outlet of a tunnel, and plays a role in inducing airflow or discharging smoke, especially in tunnel construction, because the excavation depth of the tunnel is deep, a large amount of dust particles can be generated after the tunnel blasting, if the dust particles are not ventilated in time, the working environment in the tunnel is very severe, and the construction of the tunnel is influenced.

However, the ventilation device for the existing tunnel construction usually adopts a rigid connection mode, and is short of effective elastic damping protection measures, after frequent and repeated blasting occurs in the tunnel, under the vibration of blasting impact force, a loose phenomenon is generated between the ventilation pipeline and the mounting frame, so that the connection stability of the ventilation pipeline is insufficient, and meanwhile, in the ventilation process of the ventilation device, the phenomenon that stones collide with the inner wall of the pipeline can occur in the ventilation pipeline, so that noise pollution is generated, the inner wall of the ventilation pipeline can be abraded, the service life of the ventilation pipeline is short, and further the construction efficiency of the tunnel is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a ventilation device for tunnel construction.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a ventilation device for tunnel construction comprises a jet flow ventilator and a ventilation pipe;

the inner wall of the jet flow ventilator is provided with a servo motor, and the servo motor is connected with fan blades through shaft coupling transmission;

the outer wall of the jet flow ventilator is welded with a mounting rack, and support legs are welded around the bottom of the mounting rack;

the air inlet of the jet flow ventilator is welded with a protective net, and the air outlet of the jet flow ventilator is connected with a vent pipe through a connecting flange and a bolt.

As a further description of the above technical solution:

the damping support plate is also included;

the damping supporting plate is arranged on the inner side of the horizontal end of the mounting frame;

the upper surface of damping layer board is arc smooth structure, the upper surface of damping layer board and jet ventilator's outer wall laminating contact.

As a further description of the above technical solution:

the cross-section of mounting bracket is the U-shaped structure, the shock attenuation gasket has all been pasted to the vertical end outer wall in both sides of mounting bracket, and shock attenuation gasket is double-deck composite construction.

As a further description of the above technical solution:

the number of the fan blades is eight, and the eight fan blades are distributed in an annular and equal-angle structure relative to the circle center of the jet flow ventilator;

the fan blades are all inclined structures, and the included angles between the fan blades and the cross section of the air inlet of the jet flow ventilator are 45 degrees.

As a further description of the above technical solution:

the inside outside-in of ventilation pipe comprises outer tempering layer, soundproof cotton layer, damping layer and interior tempering layer in proper order, and wherein, the thickness size on outer tempering layer and interior tempering layer equals.

As a further description of the above technical solution:

the cross section of the protective net is consistent with the cross section of the jet flow ventilator in size;

the inside of protection network is seted up the filtration pore of a plurality of circular structure, and the inner wall size in a plurality of filtration pore is all unanimous.

Advantageous effects

The utility model provides a ventilation unit is used in tunnel construction. The method has the following beneficial effects:

(1): this ventilation unit has avoided traditional rigid connection fixed mode through the shock attenuation gasket that sets up, can play effectual elastic buffer to the vibrations power that produces during the tunnel construction to reduce the resonance influence that external vibrations power caused ventilation unit, ensured ventilation unit's operation safety and stability.

(2): this ventilation unit can play effectual elastic compensation and sound insulation protection's effect to the collision noise that the ventilation pipe inner wall produced because of the stone collision through damping layer and the soundproof cotton layer that set up, when reducing the ventilation pipe inner wall and using wearing and tearing, also can prevent noise pollution's phenomenon to build comparatively quiet construction environment for tunnel construction.

Drawings

Fig. 1 is a schematic cross-sectional structure view of a ventilation device for tunnel construction according to the present invention;

fig. 2 is a schematic view of a partial structure of the mounting frame of the present invention;

FIG. 3 is a schematic structural view of the junction between the jet ventilator and the ventilation pipe;

fig. 4 is a schematic view of the internal structure of the middle ventilation pipe of the present invention.

Illustration of the drawings:

1. a support leg; 2. a damping pallet; 3. a mounting frame; 31. a shock-absorbing pad; 4. a protective net; 5. A jet ventilator; 51. a connecting flange; 52. a vent pipe; 521. an outer tempering layer; 522. a soundproof cotton layer; 523. a damping layer; 524. an inner tempering layer; 6. a fan blade; 7. a servo motor.

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.

As shown in fig. 1 and 3, a ventilation apparatus for tunnel construction includes a jet ventilator 5 and a ventilation pipe 52;

the inner wall of the jet flow ventilator 5 is provided with a servo motor 7, the servo motor 7 is connected with fan blades 6 through shaft coupling transmission, the number of the fan blades 6 is eight, the eight fan blades 6 are distributed in an annular and equal-angle structure relative to the circle center of the jet flow ventilator 5, the eight fan blades 6 are all in an inclined structure, the included angle between the eight fan blades 6 and the cross section of an air inlet of the jet flow ventilator 5 is 45 degrees, the number of the servo motors 7 is two, and the two servo motors 7 respectively drive the respective fan blades 6 to rotate positively and negatively, so that the effect of increasing negative pressure airflow is achieved;

the outer wall of the jet flow ventilator 5 is welded with the mounting frame 3, and the periphery of the bottom of the mounting frame 3 is welded with the support legs 1 which are used for supporting and fixing the mounting frame 3;

the air inlet welding of efflux ventilation machine 5 has protection network 4, and a plurality of ventilation pipe 52 can be connected to the air outlet of efflux ventilation machine 5 through flange 51 and ventilation pipe 52 bolted connection to increase ventilation unit's ventilation pipe 52's whole length, satisfy the length requirement that tunnel construction ventilates, also conveniently carry out dismouting operation to ventilation pipe 52.

As shown in fig. 1 and 2, still include damping layer board 2, damping layer board 2 sets up at the level end of mounting bracket 3 inboard, and damping layer board 2's upper surface is arc smooth structure, and damping layer board 2's upper surface and jet ventilator 5's outer wall laminating contact for when jet ventilator 5 bolt fastening was on mounting bracket 3, made its lower surface wall and damping layer board 2's arc surface contact, thereby played preliminary shock attenuation buffering's effect to jet ventilator 5.

As shown in fig. 2, the cross-section of mounting bracket 3 is the U-shaped structure, and damping gasket 31 has all been pasted to the vertical end outer wall in both sides of mounting bracket 3, and damping gasket 31 is double-deck composite construction, and double-deck damping gasket 31 can be when receiving ventilation unit's pressure impact for damping gasket 31 is by extrusion deformation, thereby plays further buffering cushioning effect to the impact force in the external world, ensures that jet ventilator 5 can be in mounting bracket 3 stable placing, can not take place the phenomenon that jet ventilator 5 rocked.

As shown in fig. 4, the inside of the ventilation pipe 52 is sequentially composed of an outer toughening layer 521, a soundproof cotton layer 522, a damping layer 523 and an inner toughening layer 524 from outside to inside, wherein the thickness of the outer toughening layer 521 is equal to that of the inner toughening layer 524, the damping layer 523 and the soundproof cotton layer 522 can effectively compensate the impact noise generated by the stone impact on the inner wall of the ventilation pipe 52 and protect the inner wall from noise, thereby reducing the abrasion of the inner wall of the ventilation pipe 52 and preventing the noise pollution, and the rigid structure of the outer toughening layer 521 and the inner toughening layer 524 can increase the strength of the ventilation pipe 52 and prevent the ventilation pipe 52 from deforming or bending after long-term use.

As shown in fig. 1, the cross section of protection network 4 is unanimous with efflux ventilation blower 5's cross sectional area size, the filtration pore of a plurality of circular structure is seted up to the inside of protection network 4, and the inner wall size of a plurality of filtration pore is all unanimous, can play filterable effect to the material of suction to efflux ventilation blower 5 inner chamber, filter the great stone of granule, prevent that the too big stone of granule diameter from entering into the inside of efflux ventilation blower 5 and fan blade 6 contact and the condition that takes place fan blade 6 and damage, also avoid the stone to remain the gathering too much and influence the ventilation fluency of ventilation pipe 52 at ventilation pipe 52 inner wall simultaneously.

The working principle is as follows: pour the bottom of stabilizer blade 1 at first with the concrete and fix, cooperation mounting bracket 3 is installed fixedly to ventilation unit, make jet ventilator 5 and ventilation pipe 52 can install on tunnel wall, start servo motor 7, make servo motor 7 drive flabellum 6 high-speed rotatory, 5 inner chambers of jet ventilator produced powerful negative pressure suction this moment, adsorb into the dust granule in the tunnel, pass through the filtering action of protection network 4, filter the stone of big granule, then inhale in ventilation pipe 52 with stone and the dust of small granule, and under damping layer 523 and soundproof cotton layer 522's protection, reduce the collision noise influence of ventilation pipe 52 inner wall, also protect the ventilation stability of ventilation pipe 52 self, ensure this ventilation unit's steady operation.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A ventilation device for tunnel construction is characterized by comprising a jet flow ventilator (5) and a ventilation pipe (52);

a servo motor (7) is arranged on the inner wall of the jet ventilator (5), and the servo motor (7) is connected with fan blades (6) through coupling transmission;

the outer wall of the jet flow ventilator (5) is welded with a mounting rack (3), and support legs (1) are welded around the bottom of the mounting rack (3);

the air inlet of the jet flow ventilator (5) is welded with the protective net (4), and the air outlet of the jet flow ventilator (5) is connected with the ventilation pipe (52) through a connecting flange (51) in a bolt mode.

2. A ventilation device for tunnel construction according to claim 1, further comprising a damping pallet (2);

the damping supporting plate (2) is arranged on the inner side of the horizontal end of the mounting frame (3);

the upper surface of damping layer board (2) is arc smooth structure, the upper surface of damping layer board (2) and the outer wall laminating contact of efflux ventilation blower (5).

3. The ventilation device for tunnel construction according to claim 1, wherein the cross section of the mounting frame (3) is a U-shaped structure, the outer walls of the vertical ends of the two sides of the mounting frame (3) are both adhered with shock-absorbing gaskets (31), and the shock-absorbing gaskets (31) are of a double-layer composite structure.

4. The ventilation device for tunnel construction according to claim 1, wherein the number of the fan blades (6) is eight, and the eight fan blades (6) are distributed in an annular and equiangular structure about the center of the jet ventilator (5);

the eight fan blades (6) are all inclined structures, and the included angles between the fan blades and the cross section of the air inlet of the jet flow ventilator (5) are 45 degrees.

5. The ventilation apparatus for tunnel construction according to claim 1, wherein the ventilation pipe (52) is composed of an outer tempering layer (521), a soundproof cotton layer (522), a damping layer (523) and an inner tempering layer (524) in sequence from outside to inside, wherein the outer tempering layer (521) and the inner tempering layer (524) have the same thickness.

6. The ventilation apparatus for tunnel construction according to claim 1, wherein the cross section of the protection net (4) is consistent with the cross sectional area of the jet ventilator (5);

the inside of protection network (4) is seted up the filtration pore of a plurality of circular structure, and the inner wall size in a plurality of filtration pore is all unanimous.