1. The utility model provides a dust filtration purification device for in construction tunnel which characterized in that: the air purifier comprises a collecting cover (100), a front air channel (101), a collecting air channel (103) and a purifying air channel (104) which are arranged in sequence, wherein the front air channel (101) is respectively distributed at two sides of the tail end of the collecting cover (100), and a front fan (102) is arranged at the inlet of each front air channel (101); the tail ends of the front air channels (101) on the two sides are respectively communicated to the collection air channel (103) which is distributed in a bending way, the middle part of the collection air channel (103) is communicated with the purification air channel (104), and at least one group of purification layers is arranged in the inner cavity of the purification air channel (104).

2. The dust filtering and purifying device for the construction tunnel according to claim 1, wherein: the air collecting duct (103) and the front air duct (101) are distributed in a right-angle bending mode, and the air collecting duct (103) and the front air ducts (101) on the two sides form a U-shaped channel structure.

3. The dust filtering and purifying device for the construction tunnel according to claim 1, wherein: the purification air flue (104) is internally provided with three groups of purification layers, namely a first purification layer (200), a second purification layer (201) and a third purification layer (202), wherein the first purification layer (200) is a spunbonded purification layer, the second purification layer (201) is a blocking melt-spraying layer, and the third purification layer (202) is a spunbonded purification layer.

4. The dust filtering and purifying device for the construction tunnel according to claim 1, wherein: the inner walls of the air collecting duct (103) and the front air duct (101) are adhered with adhesive adsorption layers.

5. The dust filtering and purifying device for the construction tunnel according to claim 4, wherein: the surface of the adhesive adsorption layer is uneven.

6. The dust filtering and purifying device for the construction tunnel according to claim 1, wherein: the outlet of the tail end of the purification air duct (104) is provided with a rear fan (105).

7. The dust filtering and purifying device for the construction tunnel according to claim 1, wherein: an opening for installing and placing the purification layer is formed in the outer wall surface of the purification air duct (104), a side embedded groove (106) and a bottom embedded groove (107) for embedding the purification layer are correspondingly formed in the inner wall of the purification air duct, and the purification layer enters the inner cavity of the purification air duct (104) through the opening.

8. The dust filtering and purifying device for the construction tunnel according to any one of claims 1 to 7, wherein: purify wind channel (104) inner chamber and still be equipped with in the fixed layer that purifies of inserting and turn round subassembly (300), should insert and turn round subassembly (300) including locking lever (301) that are located the layer side that purifies, locking lever (301) are gone up and are articulated along the even interval of length direction have a plurality of control levers (303), every control lever (303) middle part still articulates with purification wind channel (104) inner wall respectively, make control lever (303) can rotate around the pin joint on purifying wind channel (104) inner wall, the interval that forms between adjacent control lever (303), with the many groups that the interval set up on purifying layer lateral wall edge insert and turn round tooth (203) and correspond the cooperation, both form the embedded state during the installation.

9. The dust filtering and purifying device for the construction tunnel according to claim 8, wherein: the outer surface of the purification air duct (104) is also provided with a locking buckle (307), the locking buckle (307) is arranged on the surface of the purification air duct (104) and is hinged with the purification air duct (104), so that the purification air duct can rotate around the hinged point, the top end of the lock rod (301) extends to the outer side of the purification air duct (104), the upper part of the lock rod (301) is provided with a plurality of opening clamping grooves (305) at intervals, and the locking buckle (307) can be correspondingly embedded with the opening clamping grooves (305).

10. The dust filtering and purifying device for the construction tunnel according to claim 8, wherein: the lock rod (301) is installed in sliding fit with the inner wall of the purification air duct (104), and a connecting spring is arranged between the bottom of the lock rod (301) and the inner wall of the purification air duct (104).

Background

At present, the construction of the infrastructure of China is in a steady and increasing trend. The smooth penetration of the tunnel is very important for shortening the road mileage and improving the passing environment of motor vehicles. For many tunnel and mine hole projects, the safety and stability of construction environment are the first guarantee for production for the lives and properties of constructors. Due to the excavation of the tunnel, a large amount of inhalable dust and particles exist in the tunnel, which is a great hidden danger for constructors and can cause various respiratory diseases. Therefore, the air in the tunnel is improved, and the degradation of dust particles is an important problem to be solved urgently.

Through retrieval, the application with the Chinese patent application number of 2018111437104 discloses a dust absorption device for tunnel construction, which comprises an air inlet mechanism and a dust removal mechanism, wherein the air inlet mechanism comprises an air inlet cover, a fan pipe and an air inlet volute, a filtering mechanism is arranged in the air inlet cover, the filtering mechanism is obliquely arranged, a transition pipe is fixedly communicated with the tail part of the air inlet cover, one end, far away from the air inlet cover, of the transition pipe is fixedly communicated with the fan pipe, a mounting frame is fixedly connected with the inside of the fan pipe, a fan is fixedly connected onto the mounting frame, and one end, far away from the transition pipe, of the fan pipe is fixedly communicated with the air inlet volute; the dust removal mechanism comprises a dust removal barrel, a cone barrel and an air outlet barrel, the side face of the top of the dust removal barrel is fixedly communicated with the air inlet volute along the tangential direction of the dust removal barrel, the bottom of the dust removal barrel is fixedly communicated with the cone barrel, the air outlet barrel is arranged at the top of the dust removal barrel, and the bottom end of the air outlet barrel is located inside the dust removal barrel.

As the application with chinese patent application No. 201721521482.0, a mobile dust collector for tunnel semi-enclosed space is disclosed, which includes a container and a wheeled vehicle chassis for carrying the container, the interior of the container housing space is divided into a distribution room, a primary filter chamber, an activated carbon filter chamber and a water curtain filter chamber, the primary filter chamber, the activated carbon filter chamber and the water curtain filter chamber are sequentially communicated from front to back and sequentially arranged in three chambers according to the flowing direction of air flow: air inlet window, steel wire filter screen, non-woven fabrics filter screen, active carbon filter core, air-blower, cascade, fan and air outlet. This application air intake setting is in the side, and effective area is very big, can be effective and quick carry out quick absorption to the raise dust in the tunnel.

In summary, a great number of patents are disclosed in the prior art for tunnel dust removal, but the practical application effect is not uniform, and the flexibility and convenience of application are still greatly improved especially for specific application environments.

Disclosure of Invention

1. Technical problem to be solved by the invention

The invention aims to solve the problems of a large amount of dust and bad air existing in a tunnel construction site in the prior art, and provides a dust filtering and purifying device for a construction tunnel, which can purify and improve the air in the tunnel and achieve the aim of improving the construction environment of constructors in the tunnel.

2. Technical scheme

In order to achieve the purpose, the technical scheme provided by the invention is as follows:

the invention relates to a dust filtering and purifying device used in a construction tunnel, which comprises a collecting cover, a front air channel, a collecting air channel and a purifying air channel which are sequentially arranged, wherein the front air channel is respectively distributed at two sides of the tail end of the collecting cover, and a front fan is arranged at the inlet of each front air channel; the tail ends of the front air channels on the two sides are respectively communicated to the collection air channels which are distributed in a bending way, the middle parts of the collection air channels are communicated with the purification air channels, and at least one group of purification layers are arranged in the inner cavities of the purification air channels.

Furthermore, the collection air duct and the front air duct are distributed in a right-angle bending manner, and the collection air duct and the front air ducts on the two sides form a U-shaped channel structure.

Furthermore, be equipped with three groups in the purification wind channel and purify the layer, purify layer one, purify layer two and purify layer three in proper order, wherein purify layer one and glue and purify the layer for gluing, purify layer two and melt the layer for the separation, purify layer three and glue and purify the layer for gluing.

Furthermore, the inner walls of the air collecting duct and the front air duct are both adhered with adhesive adsorption layers.

Further, the surface of the adhesive/adsorption layer is uneven.

Furthermore, a rear fan is arranged at the outlet of the tail end of the purification air channel.

Furthermore, an opening for installing and placing the purifying layer is formed in the outer wall surface of the purifying air duct, a side embedded groove and a bottom embedded groove for embedding the purifying layer are correspondingly formed in the inner wall of the purifying air duct, and the purifying layer enters the inner cavity of the purifying air duct through the opening.

Furthermore, still be equipped with the insertion that is used for fixed layer that purifies and turn round the subassembly in the purification wind channel inner chamber, should insert to turn round the subassembly including the locking lever that is located the layer side that purifies, it has a plurality of control levers to articulate along the even interval of length direction on the locking lever, every control lever middle part still articulates with purification wind channel inner wall respectively, make the control lever rotate around the pin joint on purifying the wind channel inner wall, the interval that forms between the adjacent control lever, with purify the layer side wall edge on the multiunit insertion that the interval set up turn round the tooth and correspond the cooperation, both form the embedded state during the installation.

Furthermore, the outer surface of the purification air channel is also provided with a locking buckle, the locking buckle is arranged on the surface of the purification air channel and is hinged with the purification air channel, so that the locking buckle can rotate around the hinged point, the top end of the locking rod extends to the outer side of the purification air channel, the upper part of the locking rod is provided with a plurality of opening clamping grooves at intervals, and the locking buckle can be correspondingly embedded with the opening clamping grooves.

Furthermore, the locking rod is installed in sliding fit with the inner wall of the purification air channel, and a connecting spring is arranged between the bottom of the locking rod and the inner wall of the purification air channel.

3. Advantageous effects

Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:

(1) the purification device provided by the invention has the advantages that the front fan is used for sucking air into the purification air channel, the purification layers in the inner cavity of the purification air channel are used for filtering and purifying, the purified air is discharged and supplied to subsequent constructors, the air purification of a construction site can be improved, and the construction environment of the constructors on the site can be improved.

(2) The purification device is sequentially provided with the front air duct, the collection air duct and the purification air duct, wherein the collection air duct and the front air duct are distributed in a right-angle bending manner, the air duct forms a turning region and can be in large-area air contact, and the inner walls of the collection air duct and the front air duct are respectively provided with the adhesive adsorption layers, so that large particles mixed in the air can be adhered to the inner walls of the collection air duct and the front air duct, the purification device is used for pre-purifying, and the overall purification and filtration effects are further enhanced.

(3) According to the purification device, a plurality of groups of purification layers in the inner cavity of the purification air channel can be flexibly disassembled, assembled and replaced, the fixed installation of the purification layers can be guaranteed by the insertion and torsion assembly, the position change is prevented, and the practical application effect is fully guaranteed.

Drawings

FIG. 1 is a schematic view of the structure of a purification apparatus according to the present invention;

FIG. 2 is a schematic view of the structure of the purification apparatus of the present invention;

FIG. 3 is a schematic view of the internal channel structure of the purification apparatus of the present invention;

FIG. 4 is a schematic structural view of an inner cavity of a purification air duct according to the present invention;

FIG. 5 is a schematic structural view of the insertion-torsion assembly of the present invention;

fig. 6 is a schematic structural view of the locking buckle of the present invention.

The reference numerals in the schematic drawings illustrate:

100. a collection hood; 101. a front air duct; 102. a front fan; 103. a collection air duct; 104. purifying the air duct; 105. a rear fan; 106. a side caulking groove; 107. a bottom caulking groove;

200. a first purification layer; 201. a second purification layer; 202. a third purification layer; 203. inserting and twisting teeth;

300. a plug-and-turn assembly; 301. a lock lever; 302. a first hinge pivot; 303. a control lever; 304. a second hinge; 305. an open neck; 306. a hinge joint III; 307. and (4) locking buckles.

Detailed Description

For a further understanding of the present invention, reference is made to the following description taken in conjunction with the accompanying drawings and examples.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Example 1

As shown in fig. 1 to 6, the dust filtering and purifying device for use in a construction tunnel according to the present embodiment includes a collecting cover 100, a front air duct 101, a collecting air duct 103, and a purifying air duct 104, which are sequentially disposed, wherein the front air duct 101 is respectively distributed on two sides of the tail end of the collecting cover 100, and a front fan 102 is disposed at an inlet of each front air duct 101; the tail ends of the front air channels 101 at the two sides are respectively communicated to the collection air channel 103 which is distributed in a bending way, the middle part of the collection air channel 103 is communicated with the purification air channel 104, and at least one group of purification layers is arranged in the inner cavity of the purification air channel 104.

In the embodiment, the collecting cover 100 is provided with an outward gradually expanding shape, so that air in a range can be sucked; the air collecting duct 103 and the front duct 101 are distributed in a right-angled bent manner, and the air collecting duct 103 and the front ducts 101 on both sides form a U-shaped channel structure. As shown in fig. 1 and fig. 2, a rear fan 105 is disposed at an outlet of the rear end of the clean air duct 104, the front fan 102 is used for sucking air, and the rear fan 105 is used for accelerating the discharge of the cleaned air. The design of bending of preceding wind channel 101 and collection wind channel 103 makes the wind channel form the region of turning round to finally assemble from both ends, can large tracts of land contact air, and it has replaceable adsorption layer of pasting all to paste on the inner wall of collection wind channel 103 and preceding wind channel 101, should paste the adsorption layer surface and can establish to unsmooth form, can further increase the area of contact with the air, the large-scale granule that the adhesion mix with in the air more effectively, carry out the preliminary purification, then get into the purification layer of back end and further purify the filtration.

In this embodiment, three purifying layers are arranged in the purifying air duct 104, and the purifying layers are a first purifying layer 200, a second purifying layer 201 and a third purifying layer 202 in sequence, wherein the first purifying layer 200 is a spunbonded purifying layer, the second purifying layer 201 is a blocking meltblown layer, and the third purifying layer 202 is a spunbonded purifying layer. Specifically, the purification layer one 200 primarily utilizes the interiorThe non-woven fabric is purified and filtered, has micro-pores with the diameter of about 20um and is mainly used for filtering dust particles with the diameter of more than 20 um; the purifying layer two 201 is internally provided with a front layer and a rear layer, the main material is polypropylene oriented fiber with the diameter of about 2_μm micro-cavities, mainly for filtering of diameters greater than 2_μm dust particles; the inside of the third purification layer 202 is also mainly made of non-woven fabric, and the non-woven fabric is provided with micro-holes with the diameter of about 20 microns, so that when the whole device is placed, the tail end ash powder is prevented from entering the second purification layer 201. All adopt the pull formula to install in purifying wind channel 104 in purifying layer one 200, purifying layer two 201 and purifying layer three 202, be convenient for install the replacement, and can directly wash, be convenient for use.

Specifically, as shown in fig. 4, an opening for installing and placing the purification layer is formed on the outer wall surface of the purification air duct 104, a side caulking groove 106 and a bottom caulking groove 107 for embedding the purification layer are correspondingly formed on the inner wall, the purification layer enters the inner cavity of the purification air duct 104 through the opening, a plurality of installation openings are correspondingly formed on the top surface of the purification air duct 104, a plurality of purification layers are correspondingly inserted one by one, and a side caulking groove 106 and a bottom caulking groove 107 matched with the purification layer are correspondingly formed on the two side surfaces and the bottom surface of the inner wall of the purification air duct 104, so that the purification layers can be accurately and stably installed inside the purification air duct 104.

Adopt the device of this embodiment, in multiple construction environment such as tunnel construction that is more common at present, usable vehicle mounted power supplies uses for the device circular telegram, the front end is passed through front fan 102 and is rotated, accelerate the inside air flow of device, form inside and outside atmospheric pressure, can with collecting the interior air suction of cover 100, the big particle diameter dust of the at first filtration of the adsorption layer of pasting through the pipeline inner wall, utilize the setting of turning round of pipeline, large tracts of land contact air, paste the dust as much as possible, then the air current loops through a plurality of purification layers, along with rear fan 105's rotation, air discharge after the acceleration purification, air supply after the filtration purification gives follow-up construction operation personnel. After the construction is finished, the plurality of purification layers can be taken out and washed clean for subsequent continuous use, so that the requirement of repeated use is met.

Example 2

The dust filtering and purifying device for the construction tunnel in the embodiment is basically the same as embodiment 1, furthermore, an inserting and twisting component 300 for fixing a purifying layer is further arranged in an inner cavity of the purifying air duct 104, the inserting and twisting component 300 comprises a lock rod 301 positioned on the side edge of the purifying layer, a plurality of control rods 303 are hinged to the lock rod 301 along the length direction at uniform intervals, the middle part of each control rod 303 is hinged to the inner wall of the purifying air duct 104, so that the control rods 303 can rotate around hinged points on the inner wall of the purifying air duct 104, intervals formed between the adjacent control rods 303 correspond to and cooperate with a plurality of groups of inserting and twisting teeth 203 arranged at intervals on the edge of the side wall of the purifying layer, and the inserting and twisting teeth and the purifying teeth form an embedded state during installation.

As shown in fig. 5, the purification layer may be a rectangular housing made of hard plastic, and the interior of the purification layer is used for fixedly placing a purification filter material, taking the first purification layer 200 as an example, the front end edge of the housing is extended outward to form a serrated insertion-torsion tooth 203, and the purification air duct 104 is correspondingly and slidably provided with a lock lever 301, that is, a corresponding position of the inner wall of the purification air duct 104 is also provided with a fixed groove slidably engaged with the lock lever 301, the lock lever 301 can slide up and down, the lock lever 301 is uniformly provided with a plurality of groups of control levers 303 at intervals, and specifically, the lock lever 301 is hinged with a plurality of groups of control levers 303 through a first hinge pivot 302, so that the control lever 303 can rotate relative to the lock lever 301; furthermore, a plurality of hinge positions are uniformly arranged on the inner side wall of the fixing groove of the locking rod 301 in a matched and installed mode at intervals along the height direction, the middle of each control rod 303 is hinged to the inner side wall through a second hinge 304, so that the control rod 303 can rotate around the second hinge 304 as a center, namely, the control rod 301 can lift up and down, the control rod 303 can turn over around the second hinge 304, a gap formed between every two adjacent control rods 303 is matched with the inserting and twisting teeth 203, the first purification layer 200 is directly inserted downwards during installation, the inserting and twisting teeth 203 at the edge of the control rod are correspondingly embedded into the gap, the control rod 303 is used for forming a stable clamping and fixing effect on the first purification layer 200, and the accurate and stable installation position of the control rod 303 is kept. In practice, the insertion and twisting assembly 300 can be correspondingly arranged on both sides of the purification layer.

Example 3

The dust filtering and purifying device for the construction tunnel in the embodiment is basically the same as that in embodiment 2, furthermore, in this embodiment, the locking rod 301 is installed in sliding fit with the inner wall of the purification air duct 104, and a connecting spring is arranged between the bottom of the locking rod 301 and the inner wall of the purification air duct 104, namely, a fixing groove in sliding fit with the locking rod 301 is arranged at the corresponding position of the inner wall of the purification air duct 104, a connecting spring is arranged between the bottom of the fixing groove and the bottom end of the locking rod 301, the locking rod 301 can slide up and down, and the position is more stable and safer.

Example 4

The dust filtering and purifying device for the construction tunnel of the embodiment is substantially the same as embodiment 2, and further, as shown in fig. 6, a locking buckle 307 is further arranged on the outer surface of the purification air duct 104, the locking buckle 307 is arranged on the surface of the purification air duct 104 and is hinged with the purification air duct 104, so that the purification air duct can rotate around the hinged point, specifically, the locking buckle 307 can be hinged on the upper surface of the purification air duct 104 through a hinge three 306, the top end of the lock rod 301 extends to the outer side of the purification air duct 104, a plurality of opening clamping grooves 305 are formed in the upper portion of the lock rod 301 at intervals, and the locking buckle 307 can rotate to be correspondingly embedded with the opening clamping grooves 305, so that the top end of the purification layer is tightly clamped and arranged.

The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.