CN211216037U

CN211216037U - Concrete production dust fall pipeline

Info

Publication number: CN211216037U
Application number: CN201921984622.7U
Authority: CN
Inventors: 颜冬; 周洋
Original assignee: Chengdu Xinhao Dingsheng Building Materials Co ltd
Current assignee: Chengdu Xinhao Dingsheng Building Materials Co ltd
Priority date: 2019-11-16
Filing date: 2019-11-16
Publication date: 2020-08-11
Anticipated expiration: 2029-11-16

Abstract

The utility model discloses a concrete production dust fall pipeline relates to concrete production dust collecting equipment, aims at solving the problem that concrete production site raise dust influences that the staff is healthy, and its technical scheme main points are: including dust collecting mechanism, communicate in dust collecting mechanism's dust fall mechanism and communicate in dust fall mechanism's dust extraction mechanism, dust fall mechanism is including communicating in the first dust fall pipeline of dust collecting mechanism gas outlet and communicating in the second dust fall pipeline of first dust fall pipeline gas port, be provided with a plurality of dust filter plates in the first dust fall pipeline, it is a plurality of the dust filter plate is arranged along the length of first dust fall pipeline, and is adjacent be provided with the water spray pipe support that is used for towards the dust filter plate water spray between the dust filter plate, the external drain of intercommunication is seted up to the inner chamber bottom surface of first dust fall pipeline, set up a plurality of filter plate boards in the second dust fall pipeline. The utility model discloses can carry out effectual settlement to the dust of concrete production scene to the protection staff's is healthy.

Description

Concrete production dust fall pipeline

Technical Field

The utility model relates to a concrete production dust collecting equipment, more specifically say, it relates to a concrete production dust fall pipeline.

Background

Along with the progress of the township promotion of China, a large amount of concrete is needed, and the concrete is easy to generate a large amount of dust in the production process, so that the air quality is influenced, and the human body is greatly damaged.

The patent with the publication number of CN 109364661A-a dust collector for concrete processing, which comprises a base, a crusher body and a dust collection box body fixedly arranged at the left side and the right side of the upper surface of the crusher body through bolts, wherein the crusher body is communicated with an air inlet pipeline, the tail end of the air inlet pipeline is communicated with the upper end of the dust collection box body, the upper parts of the left inner wall and the right inner wall of the dust collection box body are fixedly provided with a filter component through screws, the right side of a cover plate arranged at the upper end of the dust collection box body is vertically communicated with an exhaust pipeline, the middle position of the cover plate at the upper end of the dust collection box body is communicated with a main water inlet pipeline, dust in the crusher body is sucked to the dust collection box body through a fan by means of the air inlet pipeline, the dust can be primarily intercepted and filtered by the matching of a metal rubber filter screen and a nylon filter, the filter assembly can also be flushed.

Above-mentioned technical scheme has demonstrated the equipment that is arranged in the concrete production course of working to remove dust, simultaneously the utility model provides a new technical scheme solves this problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a concrete production dust fall pipeline, it can carry out effectual settlement to the dust of commercial concrete production scene to protection staff's is healthy.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a concrete production dust fall pipeline, is including the collection dirt mechanism that is used for admitting air, feed through in the dust fall mechanism of collection dirt mechanism and feed through in the dust extraction mechanism of dust fall mechanism, dust fall mechanism is including feeding through in the first dust fall pipeline of collection dirt mechanism gas outlet and feed through in the second dust fall pipeline of first dust fall pipeline gas port, be provided with a plurality of filter plate that are parallel to its radial cross section in the first dust fall pipeline, it is a plurality of filter plate arranges along the length of first dust fall pipeline, and is adjacent be provided with the water spray pipe support that is used for towards filter plate water spray between the filter plate, the external drain of intercommunication is seted up to the inner chamber bottom surface of first dust fall pipeline, set up a plurality of filter plate boards in the second dust fall pipeline, it is a plurality of filter plate board arranges and it includes the filter screen along the length direction of second dust fall pipeline.

By adopting the technical scheme, dust on the concrete production site enters the first dust-settling pipeline through the dust collection mechanism under the action of the dust extraction mechanism; combining the dust in the first dust falling pipeline with the water spray sprayed out of the water spray pipe frame, and sinking and falling the dust under the action of gravity after the dust is wet; at the moment, the water mist is not only sprayed to the inner cavity of the first dust falling pipeline, but also sprayed to the dust filtering plate, and water on the dust filtering plate moves along the dust filtering plate to form a fine water curtain so as to enhance dust falling of air passing through the dust filtering plate; the follow-up second dust fall pipeline that gets into of air in the first dust fall pipeline, the air that gets into second dust fall pipeline loops through the polylith that sets up in second dust fall pipeline inner chamber and crosses filter plate, crosses filter plate and subsides the dust that gets into second dust fall pipeline through the filter screen to the realization is to the air dust fall.

The utility model discloses further set up to: the utility model discloses a dust filter, including the female pipe that converges, fixed and communicate in the distributive pipe of the female pipe that converges and fixed and communicate in a plurality of fog nozzles of distributive pipe, the distributive pipe extends along the width of dust filter, the spout of fog nozzle is towards dust filter, the female pipe that converges extends first dust fall pipeline and intercommunication and has the water pump.

By adopting the technical scheme, the utility model discloses a water pump supplies water to the female pipe that converges, and rivers to the distributive pipe in the female pipe that converges are spout by the fog nozzle on the distributive pipe again.

The utility model discloses further set up to: a plurality of middle through holes are formed in the lower portion of the dust filtering plate in the thickness direction, and one side, facing the bottom face of the first dust falling pipeline, of each middle through hole is provided with an opening.

By adopting the technical scheme, when water in the first dust falling pipeline flows along the bottom surface of the inner cavity of the first dust falling pipeline, the water is not blocked by the dust filtering plate because of the existence of the middle through hole.

The utility model discloses further set up to: the bottom surface slope of first dust fall pipeline and its be close to first dust fall pipeline air inlet one side and be higher than it and be close to first dust fall pipeline gas outlet one side, the drain is close to first dust fall pipeline gas outlet.

Through adopting above-mentioned technical scheme, the inner chamber bottom surface slope of first dust fall pipeline, the sewage that makes things convenient for its inside to assemble relatively better flows from the drain to reduce the probability that impurity etc. are long-pending in first dust fall pipeline and stay.

The utility model discloses further set up to: still be provided with a plurality of buffer boards in the first dust fall pipeline, it is a plurality of the buffer board is arranged and is located the dust filter board along first dust fall pipeline and is close to first dust fall pipeline air inlet, and two arbitrary adjacent buffer boards are fixed in two inner walls of first dust fall pipeline symmetry respectively, one the buffer board is not the fixed first dust fall pipeline inner wall of butt buffer board adjacent with it.

Through adopting above-mentioned technical scheme, after the air got into first dust fall pipeline, it met the buffer board earlier, through the setting of a plurality of buffer boards, and the air obtains the buffering speed reduction many times to prevent that the air current rate is too big and influence follow-up dust fall effect.

The utility model discloses further set up to: an intermediate pipeline is communicated between the first dust-settling pipeline and the second dust-settling pipeline, and an inner cavity of the intermediate pipeline is in an inverted U shape.

Through adopting above-mentioned technical scheme, the inner chamber structure that can utilize middle pipeline reduces the probability that the water of first dust fall pipeline got into second dust fall pipeline.

The utility model discloses further set up to: the dust extraction mechanism comprises a flow guide pipe and a fan arranged in the flow guide pipe, one end of the flow guide pipe is communicated with the air outlet of the middle pipeline, and the other end of the flow guide pipe is communicated with a second dust-falling pipeline.

Through adopting above-mentioned technical scheme, take out dirt mechanism and set up in the one side of giving vent to anger of second dust fall pipeline, because the air has been done once the dust fall and handled this moment, so its dust is less relatively, and the fan is difficult for making dirty relatively to reduce maintenance clearance probability.

The utility model discloses further set up to: the filter screen plates are divided into two groups and are transversely symmetrically arranged in the second dust falling pipeline, the filter screen plates are arranged along the second dust falling pipeline in the same group, and the two transversely symmetrical filter screen plates are oppositely abutted and form a V shape.

Through adopting above-mentioned technical scheme, the contact volume of the air through filter plate and filter screen obtains effectively improving to its filter effect is better relatively.

The utility model discloses further set up to: first dust fall pipeline and second dust fall pipeline all are the side opening and the opening lid closes the lid plywood that is connected with the adaptation.

Through adopting above-mentioned technical scheme, when necessary, the staff can dismantle the lid board, do clearance and maintenance to first dust fall pipeline and second dust fall pipeline inside.

The utility model discloses further set up to: the dust collection mechanism comprises a dust collection cover and a corrugated pipe, two ends of an inner cavity of the dust collection cover are opened, an air outlet of the inner cavity of the dust collection cover is communicated with the fixed corrugated pipe, and the corrugated pipe is communicated with and fixed on an air inlet of the first dust falling pipeline.

Through adopting above-mentioned technical scheme, the staff can hold the dust cage and remove it according to the raise dust position, because it passes through the bellows and connects, and the flexible deformation of bellows, so its removal is unimpeded.

To sum up, the utility model discloses following beneficial effect has:

the dust removal device comprises a first dust removal pipeline and a second dust removal pipeline, wherein after water mist is sprayed in the first dust removal pipeline for dust removal, air enters the second dust removal pipeline for secondary dust removal through a plurality of layers of filter screen plates, and dust in the air can be effectively settled in the pipelines in two dust removal treatment processes, so that the body health of workers is protected;

a dust filtering plate and a spray nozzle are arranged in the first dust falling pipeline, and the spray nozzle sprays water towards the dust filtering plate, so that a relatively fine water curtain is formed on the dust filtering plate, and the dust falling effect on the passing air is enhanced;

and thirdly, a plurality of symmetrical filter screen plates are arranged in the second dust settling pipeline, and the symmetrical filter screen plates are mutually abutted and form a V-shaped structure so as to improve the contact quantity of air and the filter screen of the filter screen plate and improve the dust settling effect.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an exploded view of the present invention, which is mainly used to show the internal structure of the present invention;

FIG. 3 is a longitudinal sectional view of the present invention, mainly used to show the internal structure of the middle pipe;

FIG. 4 is a schematic view of a partial junction of the present invention, which is mainly used to show the position relationship between the dust filter and the water spray housekeeper;

FIG. 5 is an enlarged view of portion A of FIG. 4;

fig. 6 is a schematic diagram of a local explosion of the second dust fall duct of the present invention, mainly the structure inside the second dust fall duct;

fig. 7 is a schematic structural view of two mutually abutted filter screen plates of the present invention;

fig. 8 is a schematic partial exploded view of fig. 7, which is mainly used for showing the structure of the filter screen plate.

In the figure: 1. a dust collecting mechanism; 11. a dust collection cover; 12. a bellows; 2. a dust falling mechanism; 21. a first dust fall duct; 211. a buffer plate; 212. a dust filter plate; 2121. a middle through hole; 213. a water spraying pipe frame; 2131. a bus main pipe; 2132. a water diversion pipe; 2133. a spray nozzle; 2134. a water pump; 214. a sewage draining outlet; 215. an overflow pipe; 22. a second dust fall duct; 221. a filter screen plate; 2211. a first clamping plate; 2212. a second clamping plate; 2213. a filter screen port; 2214. clamping the screw hole; 2215. clamping the bolt; 2216. a filter screen; 222. a chute; 223. a slider; 224. a pin hole; 225. a locking pin; 23. covering the plywood; 3. an intermediate pipeline; 4. a flow guide pipe; 41. a fan.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples.

A concrete production dust fall pipeline, refers to fig. 1, and includes dust collection mechanism 1, communicates in dust collection mechanism 1's dust fall mechanism 2 and communicates in dust mechanism 2's the dust mechanism of taking out. Wherein, the air that takes out the dirt mechanism and contain the dust in with concrete production site extracts dust fall mechanism 2 along collection dirt mechanism 1 and carries out dust filtration and subsides to reduce the raise dust pollution that causes among the concrete production process, guarantee the air quality and maintain constructor's healthy.

Referring to fig. 1, the dust collecting mechanism 1 includes a dust collecting cover 11 and a bellows 12 fixed to and communicating with the dust collecting cover 11. The dust collecting cover 11 is in an inverted frustum shape and is hollow inside, and the inner cavity of the dust collecting cover 11 is in a structure with two open ends. The smaller end of the dust hood 11 is open and fixed and communicated with the corrugated pipe 12, the orifice of one end of the corrugated pipe 12 is fixed and communicated with the dust hood 11, and the orifice of the other end is fixed and communicated with a first dust-settling pipeline 21.

Through fixing and communicating dust cage 11 with bellows 12 mutually, because bellows 12 has better elasticity, during the use, can adjust dust cage 11 conveniently relatively to the position that is fit for taking out the dirt according to actual user demand, extract the dust of concrete production scene.

Referring to fig. 2, the dustfall mechanism 2 includes a first dustfall duct 21, a plurality of buffer plates 211 fixedly connected to an inner wall of the first dustfall duct 21, a plurality of dust filter plates 212 fixedly connected to an inner wall of the first dustfall duct 21, and a water spray pipe support 213 fixed between the plurality of dust filter plates 212.

The output port of bellows 12 is fixed and communicates with first dustfall duct 21. In order to decelerate dust entering the first dustfall duct 21, the plurality of buffer plates 211 are distributed along the longitudinal direction of the first dustfall duct 21 and are divided into two groups which are symmetrically fixed on the inner wall of the first dustfall duct 21; damper plate 211 is parallel to the radial cross section of first dustfall duct 21; the one set of buffer plates 211 does not abut against the fixed side of the other set of buffer plates 211.

A baffle plate 211 is fixed to one end of the first dustfall duct 21 near the bellows 12. The air containing dust is blocked by the buffer plates 211 while being buffered by the buffer plates 211, moves along the gaps between the buffer plates 211 to be buffered, and moves along the length direction of the first dustfall duct 21.

Referring to fig. 2, the plurality of dust filter plates 212 are fixedly connected to the inner cavity wall surface of the first dustfall duct 21 at intervals and parallel to the radial cross section of the first dustfall duct, the plurality of dust filter plates 212 are plate-shaped and have a plurality of through holes along the thickness direction thereof, and the upper and lower edges of the dust filter plates 212 are respectively abutted and fixed to the inner cavity upper wall surface and the lower wall surface of the first dustfall duct 21. The dust-containing air may pass through the plurality of dust filter plates 212 in sequence along the longitudinal direction of the first dustfall duct 21.

Referring to fig. 4 and 5, water nozzle holder 213 includes a collecting main pipe 2131, a water dividing pipe 2132 fixed to and communicating with collecting main pipe 2131, and a spray nozzle 2133 fixed to and communicating with water dividing pipe 2132.

Referring to fig. 2 and 4, manifold tube 2131 is fixedly connected to the inner cavity side wall surface of first dustfall duct 21, and a plurality of manifold tubes 2132 are vertically fixed to and communicate with manifold tube 2131 and extend in the longitudinal direction of manifold tube 2131. The water diversion pipe 2132 is respectively arranged between two adjacent dust filter plates 212 in a penetrating way. The plurality of spray nozzles 2133 are fixed to and communicated with the water distribution pipe 2132, and the water outlets of the spray nozzles 2133 face the plate surface of the dust filter plate 212. The confluence main pipe 2131 extends to the outside and is communicated with a water pump 2134, the water pump 2134 is used for communicating water with the confluence main pipe 2131 through a water outlet pipe, and the water in the confluence main pipe 2131 passes through a water distribution pipe 2132 and is finally sprayed out of a spray nozzle 2133. After the dust entering the first dust falling pipeline 21 is decelerated by the buffer plate 211, the air containing the dust passes through the dust filtering plate 212 in sequence, the water sprayed from the spray nozzle 2133 falls on the dust filtering plate 212, and a water curtain is formed at the through hole position of the water curtain, so that the water mist is combined with the dust in the air, and the dust falling treatment is performed on the passing air.

Referring to fig. 3 and 4, in order to collect and treat the water sprayed from the spray nozzle 2133 and the settled dust, a drain outlet 214 is formed in the bottom of the inner cavity of the first dustfall duct 21 at the end away from the corrugated tube 12, and the drain outlet 214 communicates with the inner cavity of the first dustfall duct 21 and the outside. An overflow pipe 215 is fixed and communicated with the sewage outlet 214, water sprayed out through the spray nozzle 2133 in the first dustfall pipeline 21 and dust settled down are collected to the bottom of the inner cavity of the first dustfall pipeline 21 and enter the overflow pipe 215 through the sewage outlet 214, and one end of a water outlet of the overflow pipe 215 extends downwards, is fixed and is communicated with a sewage tank for temporarily storing sewage.

Referring to fig. 3, in order to ensure that the sewage flows in the first dustfall duct 21 without being blocked by the dust filter plate 212, a middle through hole 2121 is formed in the lower portion of the dust filter plate 212 along the thickness direction, and the middle through hole 2121 is open toward the bottom surface side of the inner cavity of the first dustfall duct 21. The bottom surface of the inner cavity of the first dust settling pipeline 21 is also set to be slightly higher than the air outlet on one side of the air inlet, and the inclination of the bottom surface is about 5 degrees.

Referring to fig. 3, the gas outlet of the first dustfall duct 21 is communicated with the intermediate duct 3, the inner cavity of the intermediate duct 3 is of an inverted U-shaped structure, a pipe orifice at one end of the intermediate duct is communicated with the inner cavity of the first dustfall duct 21, a pipe orifice at the other end of the intermediate duct is communicated with a dust pumping mechanism, and the dust pumping mechanism comprises a flow guide pipe 4. The wall surface of the inner cavity of the draft tube 4 is fixedly connected with a fan 41 through a bolt, and the fan 41 can be an axial flow fan with the model number of 6314/2TDH P and the section of the parallel tube.

Referring to fig. 2, the dust-settling mechanism 2 further includes a second dust-settling duct 22, and the gas outlet of the draft tube 4 is fixed by a flange and communicated with the second dust-settling duct 22. The fan 41 draws dust in a concrete production site into the first dustfall duct 21 to perform water spraying dustfall treatment, and then the dust which is not settled in the first dustfall duct 21 enters the second dustfall duct 22 again

Referring to fig. 3, intermediate duct 3 communicates first dustfall duct 21 with second dustfall duct 22, and intermediate duct 3 is an inverted U-shaped structure that can reduce the probability that water in first dustfall duct 21 will enter second dustfall duct 22.

Referring to fig. 2, a plurality of filter screens 221 are provided in the inner cavity of the second dustfall duct 22 so that dust entering the second dustfall duct 22 can be filtered and settled. The multiple layers of filter screen plates 221 are arranged at intervals along the length direction of the second dustfall duct 22.

Referring to fig. 6 and 7, in order to enable the filter screen plate 221 to be relatively conveniently mounted and dismounted, two sliding grooves 222 are respectively formed in the two symmetrical side walls of the inner cavity of the second dustfall pipeline 22, and the two sliding grooves 222 are in a long strip shape and have opposite openings; the sliding slot 222 is also open at one end. The plate edges of the filter screen plate 221 facing the two side walls of the second dustfall duct 22 are fixedly connected with sliding blocks 223 respectively, and the sliding blocks 223 are connected in the sliding grooves 222 in a sliding manner.

In order to fix the filter screen plate 221 slidably connected to the second dustfall duct 22, a pin hole 224 communicating with the chute 222 is formed in the side wall of the second dustfall duct 22, a locking pin 225 is screwed into the pin hole 224, the locking pin 225 is screwed to be in contact with the filter screen plate 221, and the filter screen plate 221 is fixed to the inner cavity of the second dustfall duct 22. When the filter screen plate 221 needs to be replaced, the locking pin 225 can be unscrewed so as not to be abutted against the filter screen plate 221, and the filter screen plate 221 can be taken out of the inner cavity of the second dustfall pipeline 22.

Referring to fig. 7, the filter screen plate 221 includes a first clamping plate 2211 and a second clamping plate 2212, the first clamping plate 2211 and the second clamping plate 2212 are both rectangular plate-shaped, and a filter screen port 2213 is formed along the thickness direction of the plate surface of the first clamping plate 2211 and the second clamping plate 2212, and the filter screen port 2213 is rectangular. Clamping screw holes 2214 are formed in the first clamping plate 2211 and the second clamping plate 2212, and clamping bolts 2215 are connected to the clamping screw holes 2214 in a threaded mode. The first and

second clamping plates

2211 and 2212 are fixed by clamping bolts 2215.

Referring to fig. 7 and 8, in order to allow the dust passing through the filter screen 221 to be settled, a filter screen 2216 is interposed between the first and

second clamping plates

2211 and 2212, and the filter screen 2216 may be a spacious dust screen.

When the filter screen 2216 needs to be disassembled and replaced, the clamping bolt 2215 is loosened, and the filter screen 2216 is taken out of the first clamping plate 2211 and the second clamping plate 2212.

Referring to fig. 6, the multiple groups of filter screen plates 221 are divided into two groups which are laterally symmetrical in the second dustfall duct 22, and the two groups of filter screen plates 221 are respectively arranged along the length of the second dustfall duct 22; one side of the filter screen plate 221 which is transversely symmetrical is close to the inner wall of the second dust-settling pipeline 22, and the other side of the filter screen plate extends oppositely and is abutted; the vertical projection of the two abutted filter screen plates 221 is in a V shape. The arrangement can increase the contact rate between the air in the second dust falling pipeline 22 and the filter screen, thereby improving the filtering effect.

Referring to fig. 3, the air outlet of the second dust-settling duct 22 is also fixed and communicated with a dust extraction mechanism to ensure that the filtered air can smoothly circulate in the second dust-settling duct 22, thereby reducing the influence of air backflow, internal vortex and the like.

Referring to fig. 2 and 6, in order to enable replacement of the structure or dust removal in the first dustfall duct 21 and the second dustfall duct 22, the inner chambers of the first dustfall duct 21 and the second dustfall duct 22 are respectively provided with cover plates 23 having an open-side structure and an open side that is connected and fitted by bolting and covering. The cover plate 23 can be glued with a rubber sealing layer on the side facing the inside of the tube to enhance the sealing performance after covering.

The working process is as follows:

firstly, adjusting an air inlet of the dust collection cover 11 to a position which is most suitable for absorbing dust, and starting a fan 41 and a water pump for supplying water to the confluence main pipe 2131;

secondly, the fan 41 extracts dust generated in a concrete production site through the dust collection cover 11 and enters the first dust falling pipeline 21, after the speed of the dust entering the first dust falling pipeline 21 is reduced by the buffer plate 211, the dust is combined with water mist sprayed by the spray nozzle 2133 in the process of moving towards the air outlet direction of the first dust falling pipeline 21, the dust sinks under the action of gravity after being wetted, and the dust which is not settled in the first dust falling pipeline 21 is sent to the second dust falling pipeline 22;

thirdly, the dust entering the second dust falling pipeline 22 passes through the multi-layer filter screen 221 in sequence, and the multi-layer filter screen 221 adsorbs and settles the dust.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a concrete production dust fall pipeline, includes collection dirt mechanism (1) that is used for admitting air, communicates in dust fall mechanism (2) of collection dirt mechanism (1) and communicates in the dust extraction mechanism of dust fall mechanism (2), its characterized in that: dust fall mechanism (2) are including communicateing in first dust fall pipeline (21) of collection dirt mechanism (1) gas outlet and communicateing in second dust fall pipeline (22) of first dust fall pipeline (21) gas outlet, be provided with in first dust fall pipeline (21) a plurality of filter plate (212) of being parallel to its radial cross section, it is a plurality of filter plate (212) are arranged along the length of first dust fall pipeline (21), and are adjacent be provided with between filter plate (212) and be used for towards water spray pipe support (213) of filter plate (212) water spray, drain (214) outside intercommunication are seted up to the inner chamber bottom surface of first dust fall pipeline (21), set up a plurality of filter plate (221) in second dust fall pipeline (22), it is a plurality of filter plate (221) are arranged and it includes filter screen (2216) along the length direction of second dust fall pipeline (22).

2. The concrete production dust fall pipeline of claim 1, wherein: the water spray pipe support (213) comprises a confluence main pipe (2131), a water distribution pipe (2132) fixed and communicated with the confluence main pipe (2131) and a plurality of spray nozzles (2133) fixed and communicated with the water distribution pipe (2132), wherein the water distribution pipe (2132) extends along the width of the dust filter plate (212), nozzles of the spray nozzles (2133) face the dust filter plate (212), and the confluence main pipe (2131) extends out of a first dust-settling pipeline (21) and is communicated with a water pump (2134).

3. The concrete production dust fall pipeline of claim 2, wherein: the lower part of the dust filtering plate (212) is provided with a plurality of middle through holes (2121) along the thickness direction, and one side of each middle through hole (2121) facing the bottom surface of the first dust falling pipeline (21) is provided with an opening.

4. A concrete production dust fall duct according to claim 3, characterized in that: the bottom surface slope of first dust fall pipeline (21) and its one side of being close to first dust fall pipeline (21) air inlet is higher than it and is close to first dust fall pipeline (21) gas outlet one side, drain (214) are close to first dust fall pipeline (21) gas outlet.

5. The concrete production dust fall pipeline of claim 1, wherein: still be provided with a plurality of buffer boards (211) in first dust fall pipeline (21), it is a plurality of buffer board (211) are arranged and are located dust filter board (212) and are close to first dust fall pipeline (21) air inlet along first dust fall pipeline (21), and two inner walls of first dust fall pipeline (21) symmetry, one are fixed in respectively in arbitrary adjacent two buffer boards (211) buffer board (211) do not butt first dust fall pipeline (21) inner wall fixed with adjacent buffer board (211) with it.

6. The concrete production dust fall pipeline of claim 1, wherein: an intermediate pipeline (3) is communicated between the first dust falling pipeline (21) and the second dust falling pipeline (22), and an inner cavity of the intermediate pipeline (3) is in an inverted U shape.

7. The concrete production dust fall pipeline of claim 5, wherein: the dust extraction mechanism comprises a guide pipe (4) and a fan (41) arranged in the guide pipe (4), one end of the guide pipe (4) is communicated with the air outlet of the middle pipeline (3), and the other end of the guide pipe is communicated with a second dust-settling pipeline (22).

8. The concrete production dust fall pipeline of claim 6, wherein: the filter screen plates (221) are divided into two groups and are transversely and symmetrically arranged in the second dust-settling pipeline (22), the filter screen plates (221) in the same group are arranged along the second dust-settling pipeline (22), and the two transversely and symmetrically filter screen plates (221) are oppositely abutted and form a V-shaped structure.

9. The concrete production dust fall pipeline of claim 6, wherein: first dust fall pipeline (21) and second dust fall pipeline (22) all are the side opening and the opening lid closes lid plywood (23) that is connected with the adaptation.

10. The concrete production dust fall pipeline of claim 1, wherein: the dust collection mechanism (1) comprises a dust collection cover (11) and a corrugated pipe (12), two ends of an inner cavity of the dust collection cover (11) are opened, an air outlet is communicated with the fixed corrugated pipe (12), and the corrugated pipe (12) is communicated with and fixed on an air inlet of the first dust fall pipeline (21).