CN111720944A

CN111720944A - Ventilation governing system for underground works

Info

Publication number: CN111720944A
Application number: CN202010582165.XA
Authority: CN
Inventors: 陈科宏; 夏坤
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-23
Filing date: 2020-06-23
Publication date: 2020-09-29

Abstract

The invention discloses a ventilation adjusting system for underground engineering, which comprises a dust collection box, wherein an annular groove is formed in the inner wall of the dust collection box, the bottom in the annular groove is fixedly connected with a magnetic ring through a telescopic air bag, the inner wall of the magnetic ring is fixedly connected with a second filter screen, a cavity is formed in the dust collection box, the inner wall of the cavity is rotatably connected with a rotating shaft, and an air pumping mechanism for pumping air into the telescopic air bag is arranged in the cavity. When the meshes formed by the second filter screen and the first filter screen are blocked, the expansion air bag contracts to drive the step plate to slide, so that the magnetic ring is attracted to abut against different step positions on the step plate, the magnetic ring rapidly extrudes the telescopic air bag, the air pressure in the telescopic air bag is rapidly increased, the first push rod is driven to upwards and rapidly impact the magnetic ring, the magnetic ring generates obvious vibration, dust on the second filter screen is shaken off, and the problem that the dust blocks the meshes to influence the underground ventilation effect is avoided.

Description

Ventilation governing system for underground works

Technical Field

The invention relates to the technical field of underground engineering, in particular to a ventilation adjusting system for underground engineering.

Background

Underground engineering refers to underground civil engineering built for developing and utilizing underground space resources deep below the ground, and in the process of underground engineering construction, effective ventilation needs to be carried out in an underground passage to ensure the safety of an underground construction environment.

At present, ventilation in the underground passage adopts the motor to drive the mode that forms the negative pressure suction after the flabellum rotates to go on more, and go out the fixed connection filter screen at the gas outlet of pipeline, so that filter the dust in the underground passage and get rid of, but along with constantly suction in the underground passage, make the mesh above the filter screen very block up easily, ventilation effect to in the underground passage descends, the dust that produces when making the underground works construction can't in time be discharged, cause the worsening of underground environment, and when the mesh blocks up, the motor idles easily when the motor drives the flabellum and continues to rotate, make the motor fragile, cost increase when leading to the ventilation in the underground passage.

To this end, we propose a ventilation regulating system for underground works.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides a ventilation regulating system for underground engineering.

In order to achieve the purpose, the invention adopts the following technical scheme:

a ventilation regulating system for underground engineering comprises a dust collection box, wherein the lower end of the dust collection box is arranged in a conical manner, a first filter screen is fixedly connected to the inner wall of the dust collection box, an air inlet pipe is connected to the lower portion of the side wall of the dust collection box, an air outlet pipe is connected to the upper portion of the side wall of the dust collection box, a ring groove is formed in the inner wall of the dust collection box, a magnetic ring is fixedly connected to the bottom of the ring groove through a telescopic air bag, a second filter screen is fixedly connected to the inner wall of the magnetic ring, a cavity is formed in the dust collection box, a rotating shaft is rotatably connected to the inner wall of the cavity, a wind wheel is fixedly connected to one end, away from the inner wall of the cavity, of the rotating shaft, is arranged right opposite to the opening of the air inlet pipe, an air pumping mechanism for, the elasticity of the inflatable air bag is larger than that of the telescopic air bag.

Preferably, the pump gas mechanism includes through spring and cavity inner wall fixed connection have magnetism sliding plug, just magnetism sliding plug and cavity inner wall sealing sliding connection, the lateral wall symmetry fixedly connected with that the pivot is located the cavity is with the magnetic sheet that magnetism sliding plug repels, the cavity inner wall is connected with flexible gasbag through one-way intake pipe, the cavity inner wall is connected with one-way breathing pipe, flexible gasbag lateral wall is connected with first outlet duct, one-way intake pipe inner wall is connected with the inflation gasbag through the connecting pipe, the inflation gasbag lateral wall is connected with the second outlet duct, the diameter of second outlet duct is far less than the diameter of connecting pipe, install the supporting mechanism that supports the magnetic ring in the one-way intake pipe.

Preferably, the supporting mechanism comprises a vertical pipe fixedly connected to the side wall of the one-way air inlet pipe, a partition plate is fixedly connected to the middle of the vertical pipe, the lower end of the partition plate extends into the one-way air inlet pipe and separates the one-way air inlet pipe from the one-way air inlet pipe, the inner walls of the two sides of the vertical pipe, which are located on the partition plate, are respectively connected with a first push rod and a second push rod in a sealing and sliding mode, a one-way air inlet hole is formed in the side.

The invention has the following beneficial effects:

1. by arranging the wind wheel, the rotating shaft, the magnetic plate and the magnetic sliding plug, when underground engineering is sucked and ventilated, airflow flowing in from the air inlet pipe drives the wind wheel to rotate rapidly, so that the rotating shaft drives the magnetic plate to be opposite to the magnetic sliding plug discontinuously, the magnetic sliding plug slides in a reciprocating manner on the inner wall of the cavity under the action of repulsive force of the spring and the magnetic plate, gas on the inner wall of the cavity is pumped out continuously through the one-way air inlet pipe, the air pressure in the vertical pipe is increased, the first push rod is pushed to slide upwards rapidly, the magnetic ring is abutted against the top in the annular groove, meshes of the first filter screen and the second filter screen are staggered when abutted against each other, and a filter device with smaller meshes is formed, so that a good filtering effect can be achieved on dust, and the dust collection effect is good;

2. when the wind wheel continuously and rapidly rotates, the telescopic air bag is continuously expanded, finally the telescopic air bag abuts against the inner wall of the annular groove, meanwhile, the expansion air bag component is extended through the connecting pipe, the step positions on the step plate abut against the side wall of the magnetic ring, when the meshes formed by abutting the first filter screen and the second filter screen are blocked, the rotating speed of the wind wheel is slow, the frequency of the magnetic sliding plug in the inner wall of the cavity in a reciprocating sliding mode is reduced, the air inflow in the one-way air inlet pipe is far smaller than the air discharge quantity from the first air outlet pipe and the second air outlet pipe, the expansion air bag is firstly contracted due to the elasticity of the expansion air bag being larger than that of the telescopic air bag, the step plate is driven to slide, the magnetic ring is further attracted to abut against different step positions on the step plate, the magnetic ring rapidly extrudes the telescopic air bag, the air pressure in the telescopic air bag is rapidly increased, the magnetic ring generates obvious vibration to shake off dust on the second filter screen, so that the dust is prevented from blocking the meshes and influencing the underground ventilation effect;

3. the wind wheel is driven to rotate through the air flow in the air inlet pipe, and then the air pumping mechanism is driven to continuously operate, so that the first filter screen and the second filter screen are abutted, the rotating speed of the wind wheel can be changed according to the air flow speed in the air inlet pipe, dust on the second filter screen can be automatically shaken off, other power mechanisms are not needed, and the energy-saving and environment-friendly effects are achieved.

Drawings

Fig. 1 is a schematic structural view of a ventilation regulating system for underground works according to the present invention;

fig. 2 is an enlarged schematic view of a structure at a in fig. 1.

In the figure: 1 dust collection box, 2 first filter screens, 3 air inlet pipes, 4 air outlet pipes, 5 annular grooves, 6 telescopic air bags, 7 magnetic rings, 8 second filter screens, 9 cavities, 10 rotating shafts, 11 wind wheels, 12 magnetic plates, 13 magnetic sliding plugs, 14 one-way air inlet pipes, 15 one-way air suction pipes, 16 vertical pipes, 17 partition plates, 18 first push rods, 19 second push rods, 20 one-way air inlet holes, 21 first air outlet pipes, 22 expansion air bags, 23 step plates, 24 connecting pipes and 25 second air outlet pipes.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.

Referring to fig. 1-2, a ventilation adjusting system for underground engineering, comprising a dust collection box 1, wherein the lower end of the dust collection box 1 is arranged in a conical shape, so as to collect and clean dust in the dust collection box 1, a first filter screen 2 is fixedly connected to the inner wall of the dust collection box 1, an air inlet pipe 3 is connected to the lower part of the side wall of the dust collection box 1, an air outlet pipe 4 is connected to the upper part of the side wall of the dust collection box 1, an annular groove 5 is formed in the inner wall of the dust collection box 1, a magnetic ring 7 is fixedly connected to the bottom of the annular groove 5 through a telescopic air bag 6, a second filter screen 8 is fixedly connected to the inner wall of the magnetic ring 7, further, the mesh sizes of the first filter screen 2 and the second filter screen 8 are equal, the mesh is staggered when the first filter screen 2 and the second filter screen 8 abut against each other, so as to filter dust with smaller diameter, a cavity 9 is formed in, and the wind wheel 11 is arranged right opposite to the opening of the air inlet pipe 3, so that when airflow enters the dust collection box 1 from the opening of the air inlet pipe 3, the wind wheel 11 can be driven to rotate rapidly, further, when meshes formed by abutting the first filter screen 2 and the second filter screen 8 are not blocked, the airflow velocity in the air inlet pipe 3 is higher, so that the wind wheel 11 rotates rapidly, when meshes formed by abutting the first filter screen 2 and the second filter screen 8 are blocked, the airflow velocity in the air inlet pipe 3 is lower, so that the wind wheel 11 rotates slowly or even stops rotating, an air pumping mechanism for pumping air in the telescopic air bag 6 is arranged in the cavity 9, the inner wall of the annular groove 5 is fixedly connected with a step plate 23 through an expansion air bag 22, the step plate 23 is made of a magnetic material, further, the step plate 23 is connected with the inner wall of the annular groove 5 in a sliding manner, a plurality of right-angle steps are arranged at the upper end of the step plate 23, the side wall of the step, the elasticity of the inflatable air bag 22 is larger than that of the telescopic air bag 6, and further, under the same air inlet and outlet conditions, the expansion speed of the inflatable air bag 22 is far larger than that of the telescopic air bag 6.

The air pumping mechanism comprises a magnetic sliding plug 13 fixedly connected with the inner wall of a cavity 9 through a spring, the magnetic sliding plug 13 is connected with the inner wall of the cavity 9 in a sealing and sliding manner, further, the inner wall of the cavity 9 close to the spring is provided with a through hole for balancing the air pressure of the magnetic sliding plug 13 when the inner wall of the cavity 9 slides, the side wall of a rotating shaft 10 positioned in the cavity 9 is symmetrically and fixedly connected with a magnetic plate 12 which is repulsive to the magnetic sliding plug 13, the inner wall of the cavity 9 is connected with a telescopic air bag 6 through a one-way air inlet pipe 14, the inner wall of the cavity 9 is connected with a one-way air suction pipe 15, further, the one-way air inlet pipe 14 only allows air to enter the telescopic air bag 6 from the cavity 9, the one-way air suction pipe 15 only allows air to enter the cavity 9 from the outside, the side wall of the telescopic air bag 6 is connected with a, the diameter of the second air outlet pipe 25 is far smaller than that of the connecting pipe 24, further, when the air inflow in the one-way air inlet pipe 14 is large, the air inflow in the connecting pipe 24 is larger than the air displacement in the second air outlet pipe 25, so that the expansion airbag 22 expands, when the air inflow in the one-way air inlet pipe 14 is small, the air inflow in the connecting pipe 24 is smaller than the air displacement in the second air outlet pipe 25, so that the expansion airbag 22 contracts, and the one-way air inlet pipe 14 is provided with a supporting mechanism for supporting the magnetic ring 7.

The supporting mechanism comprises a vertical pipe 16 fixedly connected with the side wall of the unidirectional air inlet pipe 14, a partition plate 17 is fixedly connected with the middle part of the vertical pipe 16, the lower end of the partition plate 17 extends into the unidirectional air inlet pipe 14 and separates the unidirectional air inlet pipe from the unidirectional air inlet pipe 14, the inner walls of the vertical pipe 16, which are positioned at the two sides of the partition plate 17, are respectively connected with a first push rod 18 and a second push rod 19 in a sealing and sliding manner, a unidirectional air inlet hole 20 is formed in the side wall of the partition plate 17, it should be noted that the unidirectional air inlet hole 20 allows air to enter the second push rod 19 from the first push rod 18, the diameter of the unidirectional air inlet hole 20 is far larger than that of the first air outlet pipe 21, further, when the wind wheel 11 rotates rapidly, the frequency of reciprocating sliding of the magnetic sliding plug 13 on the inner wall of the cavity 9 is fast at the moment, further, the air displacement from the unidirectional air inlet pipe 14 is large, the, the dust is well filtered, then the gas enters the telescopic air bag 6 through the one-way air inlet hole 20, and the air inflow from the one-way air inlet hole 20 is larger than the air displacement from the first air outlet pipe 21, so that the telescopic air bag 6 is filled with the gas to be expanded.

In the invention, when the underground engineering is ventilated, the meshes on the first filter screen 2 and the second filter screen 8 are dredged, the flow rate of gas entering from the gas inlet pipe 3 is high, the wind wheel 11 opposite to the pipe orifice of the gas inlet pipe 3 is driven to rotate rapidly, the magnetic plate 12 fixedly connected with the side wall of the rotating shaft 10 is driven to rotate rapidly, the magnetic plate 12 is switched rapidly in two states of opposite and parallel to the magnetic sliding plug 13, the frequency of the reciprocating sliding of the magnetic sliding plug 13 on the inner wall of the cavity 9 is high, under the action of the one-way gas inlet pipe 14 and the one-way gas suction pipe 15, a large amount of gas in the cavity 9 is discharged rapidly through the one-way gas inlet pipe 14, the pressure at the position of the first push rod 18 is obviously higher than that at the position of the second push rod 19, the first push rod 18 moves rapidly upwards to drive the magnetic ring 7 to move upwards to abut against the top in the annular groove 5, and the meshes, dust is well filtered, then, a part of gas in the one-way air inlet pipe 14 enters the expansion air bag 22 through the connecting pipe 24, the diameter of the connecting pipe 24 is larger than that of the second air outlet pipe 25, so that the expansion air bag 22 is continuously expanded to push the step plate 23 to slide, the uppermost step of the step plate 23 is abutted against the side wall of the magnetic ring 7, meanwhile, a part of gas in the one-way air inlet pipe 14 enters the telescopic air bag 6 through the one-way air inlet hole 20, the diameter of the one-way air inlet hole 20 is larger than that of the first air outlet pipe 21, the telescopic air bag 6 is continuously inflated and expanded to tightly abut against the magnetic ring 7, and the second push rod 19 also moves upwards to abut against the lower end of the magnetic ring 7;

when meshes formed by the first filter screen 2 and the second filter screen 8 are blocked, the gas in the gas inlet pipe 3 flows slowly, the wind wheel 11 rotates slowly, the frequency of the magnetic sliding plug 13 sliding back and forth on the inner wall of the cavity 9 is slow, the gas in the one-way gas inlet pipe 14 flows a little and slowly, the air pressure in the one-way gas inlet pipe 14 is reduced obviously, the first push rod 18 and the second push rod 19 are separated from the magnetic ring 7 downwards under the action of gravity, the exhaust amount from the first gas outlet pipe 21 is larger than the air intake amount from the one-way gas inlet hole 20, the telescopic airbag 6 contracts, the exhaust amount from the second gas outlet pipe 25 is larger than the air intake amount from the connecting pipe 24, the expansion airbag 22 contracts continuously, the expansion airbag 22 contracts first, the step plate 23 is driven to move, and the edge of the magnetic ring 7 is opposite to a right-angle step at the upper end of the step plate 23, under the magnetic force effect, the inner wall of the annular groove 5 descends rapidly under the magnetic ring 7, so that the telescopic air bag 6 is compressed rapidly, the air exhausted from the telescopic air bag 6 in the compression process can drive the second push rod 19 to rapidly impact the magnetic ring 7 upwards, so that the magnetic ring 7 generates obvious vibration, and further dust on the second filter screen 8 is removed, and further the edge of the magnetic ring 7 can be abutted against each right-angled step of the step plate 23 along with the continuous driving of the expansion air bag 22, and further the magnetic ring 7 can vibrate continuously, dust on the second filter screen 8 is effectively removed, the removed dust falls to the lower end of the dust collection box 1, and only the dust at the lower end of the dust collection box 1 needs to be cleaned regularly.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. A ventilation regulating system for underground engineering comprises a dust collection box (1), wherein the lower end of the dust collection box (1) is arranged in a conical manner, a first filter screen (2) is fixedly connected to the inner wall of the dust collection box (1), an air inlet pipe (3) is connected to the lower portion of the side wall of the dust collection box (1), an air outlet pipe (4) is connected to the upper portion of the side wall of the dust collection box (1), the ventilation regulating system is characterized in that an annular groove (5) is formed in the inner wall of the dust collection box (1), a magnetic ring (7) is fixedly connected to the bottom of the annular groove (5) through a telescopic air bag (6), a second filter screen (8) is fixedly connected to the inner wall of the magnetic ring (7), a cavity (9) is formed in the dust collection box (1), a rotating shaft (10) is rotatably connected to the inner wall of the cavity (9), a wind wheel (11) is fixedly connected to one end, far away from, install in cavity (9) and carry out the pump gas mechanism of pump gas in to flexible gasbag (6), ring channel (5) inner wall is through inflation gasbag (22) fixedly connected with step board (23), just step board (23) adopt magnetic material to make, the elasticity of inflation gasbag (22) is greater than the elasticity of flexible gasbag (6).

2. The ventilation regulating system for the underground engineering according to claim 1, wherein the pumping mechanism comprises a magnetic sliding plug (13) fixedly connected with the inner wall of the cavity (9) through a spring, the magnetic sliding plug (13) is connected with the inner wall of the cavity (9) in a sealing and sliding manner, the side wall of the rotating shaft (10) positioned in the cavity (9) is symmetrically and fixedly connected with a magnetic plate (12) which is repellent to the magnetic sliding plug (13), the inner wall of the cavity (9) is connected with the telescopic airbag (6) through a one-way air inlet pipe (14), the inner wall of the cavity (9) is connected with a one-way air suction pipe (15), the side wall of the telescopic airbag (6) is connected with a first air outlet pipe (21), the inner wall of the one-way air inlet pipe (14) is connected with an inflatable airbag (22) through a connecting pipe (24), and the side wall of the inflatable airbag (22) is, the diameter of the second air outlet pipe (25) is far smaller than that of the connecting pipe (24), and a supporting mechanism for supporting the magnetic ring (7) is installed on the one-way air inlet pipe (14).

3. The ventilation adjusting system for the underground engineering as claimed in claim 2, wherein the support mechanism comprises a vertical pipe (16) fixedly connected to the side wall of the one-way air inlet pipe (14), a partition plate (17) is fixedly connected to the middle of the vertical pipe (16), the lower end of the partition plate (17) extends into and separates the one-way air inlet pipe (14), the inner walls of the vertical pipe (16) at two sides of the partition plate (17) are respectively connected with a first push rod (18) and a second push rod (19) in a sealing and sliding manner, the side wall of the partition plate (17) is provided with one-way air inlet holes (20), and the diameter of the one-way air inlet holes (20) is far larger than that of the first air outlet pipe.