CN115749912A - Tunnel dust removal device - Google Patents
Tunnel dust removal device Download PDFInfo
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- CN115749912A CN115749912A CN202211458903.5A CN202211458903A CN115749912A CN 115749912 A CN115749912 A CN 115749912A CN 202211458903 A CN202211458903 A CN 202211458903A CN 115749912 A CN115749912 A CN 115749912A
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- dust
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
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Abstract
The invention belongs to the technical field of tunnel dust removal, and particularly discloses a tunnel dust removal device. Including frequency conversion disrotatory amortization fan, dust purification case and controller, frequency conversion disrotatory amortization fan includes cylindric shell, and frequency conversion disrotatory amortization fan is connected with the controller. An ultra-deep pleated flame-retardant filter element for purifying air is arranged in the dust purification box, and an air outlet of the variable-frequency disrotatory silencing fan is communicated with the ultra-deep pleated flame-retardant filter element. An annular hollow sleeve for discharging purified air is arranged around the shell of the frequency conversion disrotatory silencing fan, and an air channel is formed between the annular hollow sleeve and the shell. The front end of the annular hollow sleeve is connected with the shell in a sealing way, and a plurality of exhaust holes for exhausting purified air are uniformly arranged on the annular hollow sleeve in a surrounding way at the position close to the front end. The invention forms the trumpet-shaped dust-blocking air curtain close to the air inlet of the variable-frequency disrotatory silencing fan, so that the dust-blocking effect of the air curtain is better, and the air curtain can be more suitable for the section of the whole tunnel.
Description
Technical Field
The invention belongs to the technical field of tunnel dust removal, and particularly relates to a tunnel dust removal device.
Background
Too high dust concentration in the tunnel caused by the mine method construction is always a difficult problem which troubles the efficient construction of the tunnel, causes serious environmental pollution problem and harms the health of constructors. Dust particles can accelerate mechanical wear, shorten the service life of a precision instrument and reduce the precision and the efficiency of the precision instrument. The visibility of a construction area in the tunnel can be reduced, the possibility of misoperation of constructors is increased, and the tunnel construction safety and the construction efficiency are further reduced. The problem of dust removal has become an urgent project in the field of tunnel construction, and therefore, the research on the dust removal technology is not slow.
Through comprehensively considering various dust removal modes, aiming at the root of tunnel dust, a special dust collecting device for the tunnel is developed, the dust is digested in the tunnel, and a good construction environment is created. Although the number and the mileage of the long tunnel and the extra-long tunnel are far ahead, the tunnel construction environment and the dust removal technology are slightly behind in relative part of countries, and the demand market of the tunnel dust removal device is huge.
The research and development of the existing tunnel dust removal device realize serialization and diversification, the tunnel dust removal device is divided into an L type and an H type, and perfect butt joint of length, width and height with an actual field is realized. The equipment is flexible in installation and fixing mode and can move on the trolley along with the tunnel construction progress; or by moving the wind in the obliquely upper section of the tunnelThe dust is adsorbed near the face of the tunnel. The tunnel dust removal device adopts the air curtain dust blocking technology, the dust diffusion is effectively controlled, and the dust content in the treated air can be as low as 0.1mg/m 3 。
The working conditions of the prior tunnel dust removal device are as follows: the frequency conversion of tunnel dust collector produces powerful adsorption to the contaminated air of work area to rotating amortization fan, and under the pressure effect, dirty air gets into dust collector, and the dust is filtered when flowing through the fire-retardant filter core of ultra-deep pleat formula, then flows out from the both sides on dust purification case upper portion with air-purifying's form again, forms the air curtain. The rapid cleaning of the polluted air is realized by the backflow of the purified air, the dust removed after blasting of the tunnel working face only needs 5-10 minutes, and the waiting time after blasting is greatly reduced. Meanwhile, the air curtain formed in the dust purification area can achieve the effect of dust blocking, dust is digested in the tunnel, and a good construction environment is created.
The dust removal and purification principle of the tunnel dust removal device is as follows: polluted air enters from the air inlet, gas containing dust flows through the ultra-deep pleated flame-retardant filter element, dust particles are retained on the surface of the pleated filter element, and clean gas passes through the pleated filter element and is discharged from air outlets on two sides of the box body to form an air curtain, so that a dust blocking effect is achieved.
However, when the variable frequency counter-rotating noise reduction fan at the front end absorbs the dirty air, the air curtain inevitably causes the situation that the dust flows over the noise reduction fan from the outer side to float to the rear purification working area, so that the work of the dust filtration area is influenced.
Disclosure of Invention
The invention aims to provide a tunnel dust removal device, which effectively solves the problem that dust flows over a noise reduction fan from the outer side to the rear to purify a working area when a variable-frequency contra-rotating noise reduction fan at the front end absorbs dirty air.
In order to solve the technical problems, the invention adopts the technical scheme that:
the utility model provides a tunnel dust collector, includes frequency conversion disrotatory amortization fan, dust purification case and controller, the frequency conversion disrotatory amortization fan includes cylindric shell, the frequency conversion disrotatory amortization fan is connected with the controller.
An ultra-deep pleated flame-retardant filter element for purifying air and a dust collecting box for collecting dust are arranged in the dust purifying box, and an air outlet of the variable-frequency contra-rotating noise reduction fan is communicated with the ultra-deep pleated flame-retardant filter element;
an annular hollow sleeve for discharging purified air is arranged around the shell of the variable-frequency disrotatory silencing fan in a surrounding mode, and an air channel is formed between the annular hollow sleeve and the shell.
The front end of the annular hollow sleeve is connected with the shell in a sealing mode, and a plurality of exhaust holes used for exhausting purified air are uniformly arranged on the annular hollow sleeve in a surrounding mode at the position close to the front end.
Furthermore, the exhaust hole is square and the size is the same, and the included angle between the vertical symmetry axis of the exhaust hole and the axis of the annular hollow sleeve is 45 degrees.
Further, still include the dust concentration sensor who is used for measuring dust concentration, dust concentration sensor locates the air intake department of frequency conversion disrotatory amortization fan, dust concentration sensor is connected with the controller.
Furthermore, the front end of the annular hollow sleeve is connected with the position, close to the front end of the shell, on the shell in a sealing manner, the rear end of the annular hollow sleeve is connected with the front end wall of the dust purification box in a welding manner, and the outer bottom wall of the annular hollow sleeve is connected with the extending surface of the bottom wall of the dust purification box.
Furthermore, the joint of the rear end of the annular hollow sleeve and the front end wall of the dust purification box is sealed by a waterproof sealing rubber ring.
Further, the exhaust hole encircles the setting of cyclic annular hollow sleeve round, exhaust hole exhaust air-purifying forms loudspeaker form air curtain, and dirty air is absorbed to the air intake department of cooperation frequency conversion disrotatory amortization fan, realizes better dirt effect.
Furthermore, a back-blowing dispersion tower is arranged inside the ultra-deep pleated flame-retardant filter element.
The beneficial technical effects of the invention are as follows:
(1) Evenly encircle through the position of nearly front end on cyclic annular hollow sleeve and set up a plurality of exhaust holes, discharge the exhaust hole on following cyclic annular hollow sleeve with air-purifying to form loudspeaker form dust-blocking air curtain near the air intake department of frequency conversion disrotatory amortization fan, be used for solving the dirty air and waft the problem to rear workspace, make the effect that air curtain blocked dust better, more can adapt to whole tunnel section.
(2) The exhaust holes are arranged to be square with the same size, the included angle between the vertical symmetrical axis of the exhaust holes and the axis of the annular hollow sleeve is 45 degrees, so that the exhaust volume of each exhaust hole is uniform, the problem of air disturbance caused by nonuniform exhaust purified air is solved, an ideal horn-shaped dust-blocking air curtain is formed at the exhaust holes, and the dust-blocking effect is improved.
(3) Through setting up dust concentration sensor, can carry out the automatic matching of frequency conversion to the power of revolving the amortization fan according to dust concentration, realize frequency conversion work, it is energy-efficient.
Drawings
The invention will be described in detail with reference to the drawings and the detailed description.
FIG. 1 is a schematic perspective view of the present invention;
fig. 2 is a schematic structural diagram of the annular hollow sleeve and the front part of the variable frequency contra-rotating noise reduction fan in fig. 1.
Detailed Description
As shown in fig. 1, a tunnel dust removing device comprises a frequency conversion disrotatory silencing fan 1, a dust purifying box 2 and a controller, wherein the frequency conversion disrotatory silencing fan 1 comprises a cylindrical shell, and the frequency conversion disrotatory silencing fan 1 is connected with the controller.
An ultra-deep pleated flame-retardant filter element (not shown) for purifying air and a dust collection box 3 for collecting dust are arranged in the dust purification box 2. The ultra-deep pleat type flame-retardant filter element is internally provided with a back-blowing dispersion tower, and the use effect of the filter element with large pleat depth and multiple pleat numbers can be powerfully ensured by using the instantaneous supersonic shock wave of 100ms pulse, so that the filter element is automatically cleaned, and the dust removal effect is better.
The air outlet of the frequency conversion disrotatory silencing fan 1 is communicated with the ultra-deep pleated flame-retardant filter element, an annular hollow sleeve 4 for discharging purified air is arranged around the shell of the frequency conversion disrotatory silencing fan 1, and an air channel is formed between the annular hollow sleeve 4 and the shell. In the present embodiment, the longitudinal section of the annular hollow sleeve 4 is annular.
The outer bottom wall of the annular hollow sleeve 4 is connected with the extending surface of the bottom wall of the dust purification box 2. The front end of the annular hollow sleeve 4 is connected with the shell of the frequency conversion disrotatory silencing fan 1 in a sealing manner, and in the embodiment, the front end of the annular hollow sleeve 4 is connected with the shell of the frequency conversion disrotatory silencing fan 1 in a sealing manner at a position close to the front end of the shell. The rear end of the annular hollow sleeve 4 is connected with the front end wall of the dust purification box 2 in a welding way. The joint of the rear end of the annular hollow sleeve 4 and the front end wall of the dust purification box 2 is sealed by a waterproof sealing rubber ring 7 for preventing air leakage.
A plurality of exhaust holes 5 for exhausting purified air are uniformly arranged on the annular hollow sleeve 4 in a surrounding way at the position close to the front end. In this embodiment, exhaust hole 5 encircles 4 rounds of setting of cyclic annular hollow sleeve, 5 exhaust air-purifying in exhaust hole forms loudspeaker form air curtain, and dirty air is absorbed to the air intake department of rotatory amortization fan to the cooperation frequency conversion to realize better dirt effect that hinders.
As shown in fig. 2, the exhaust holes 5 are square and have the same size, and the included angle between the vertical symmetry axis of the exhaust holes 5 and the axis of the annular hollow sleeve 4 is 45 degrees, so that the exhaust volume of each exhaust hole 5 is ensured to be uniform, and the problem of air disturbance caused by uneven purified air is avoided. The purified air is discharged from the exhaust holes 5 to form a horn-shaped dust-blocking air curtain.
In some embodiments of the present invention, the tunnel dust removing apparatus further includes a dust concentration sensor 6 for measuring a dust concentration, the dust concentration sensor 6 is disposed at an air inlet of the variable frequency counter-rotating noise reduction fan 1, and the dust concentration sensor 6 is connected to the controller. The dust concentration sensor 6 can automatically match the power of the frequency conversion disrotatory silencing fan 1 according to the dust concentration absorbed by the frequency conversion disrotatory silencing fan 1, and the processing air quantity can be 1000-3000 m 3 Selecting every min to realize frequency conversion workHigh efficiency and energy saving.
The specific working process of the invention is as follows: when the tunnel dust removal device works, dirty air in the tunnel is sucked by the variable-frequency contra-rotating noise reduction fan 1, purified air is uniformly discharged from the exhaust holes 5 on the annular hollow sleeve 4 after being purified by the ultra-deep pleated flame-retardant filter element, and a horn-shaped dust-blocking air curtain is formed.
The invention closes the purified air outlet arranged at the two sides of the upper part of the dust purification box 2, and leads the purified air to be discharged from the exhaust hole 5 near the front end of the annular hollow sleeve 4, thus forming a trumpet-shaped dust-blocking air curtain near the air inlet of the variable-frequency contra-rotating muffling fan 1, solving the problem that the dirty air drifts to the rear working area, leading the dust-blocking effect of the air curtain to be better and being more suitable for the whole tunnel section.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.
Claims (7)
1. A tunnel dust removal device comprises a frequency conversion disrotatory silencing fan, a dust purification box and a controller, wherein the frequency conversion disrotatory silencing fan comprises a cylindrical shell, the frequency conversion disrotatory silencing fan is connected with the controller,
an ultra-deep pleated flame-retardant filter element for purifying air and a dust collecting box for collecting dust are arranged in the dust purifying box, and an air outlet of the variable-frequency contra-rotating noise reduction fan is communicated with the ultra-deep pleated flame-retardant filter element;
an annular hollow sleeve for discharging purified air is arranged around the shell of the variable-frequency disrotatory silencing fan in a surrounding mode, and an air channel is formed between the annular hollow sleeve and the shell.
The front end of the annular hollow sleeve is connected with the shell in a sealing mode, and a plurality of exhaust holes used for exhausting purified air are uniformly arranged on the annular hollow sleeve in a surrounding mode at the position close to the front end.
2. The tunnel dust removal device of claim 1, wherein the exhaust holes are square and of the same size, and the vertical symmetry axis of the exhaust holes forms an angle of 45 ° with the axis of the annular hollow sleeve.
3. The tunnel dust removal device of claim 1, further comprising a dust concentration sensor for measuring dust concentration, wherein the dust concentration sensor is arranged at an air inlet of the variable frequency counter-rotating noise reduction fan and is connected with the controller.
4. The tunnel dust removing device of claim 2 or 3, wherein the front end of the annular hollow sleeve is connected with the position close to the front end of the outer shell in a sealing manner, the rear end of the annular hollow sleeve is connected with the front end wall of the dust purification box in a welding manner, and the outer bottom wall of the annular hollow sleeve is connected with the extending surface of the bottom wall of the dust purification box.
5. The tunnel dust removing device of claim 4, wherein the joint of the rear end of the annular hollow sleeve and the front end wall of the dust purification box is sealed by a waterproof sealing rubber ring.
6. The tunnel dust collector of claim 5, wherein the exhaust hole is arranged around the annular hollow sleeve.
7. The tunnel dust collector of claim 6, wherein the ultra-deep pleated flame retardant filter element is internally provided with a blowback dispersion tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211458903.5A CN115749912A (en) | 2022-11-18 | 2022-11-18 | Tunnel dust removal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211458903.5A CN115749912A (en) | 2022-11-18 | 2022-11-18 | Tunnel dust removal device |
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| Publication Number | Publication Date |
|---|---|
| CN115749912A true CN115749912A (en) | 2023-03-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211458903.5A Pending CN115749912A (en) | 2022-11-18 | 2022-11-18 | Tunnel dust removal device |
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| CN (1) | CN115749912A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118088251A (en) * | 2024-04-29 | 2024-05-28 | 山西路桥青银二广高速公路太原联络线有限公司 | Dust collector is used in tunnel construction |
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2022
- 2022-11-18 CN CN202211458903.5A patent/CN115749912A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118088251A (en) * | 2024-04-29 | 2024-05-28 | 山西路桥青银二广高速公路太原联络线有限公司 | Dust collector is used in tunnel construction |
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