CN102764552A - Differential air-pressure spray dust removing system and implementation method thereof - Google Patents
Differential air-pressure spray dust removing system and implementation method thereof Download PDFInfo
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- CN102764552A CN102764552A CN2012102674635A CN201210267463A CN102764552A CN 102764552 A CN102764552 A CN 102764552A CN 2012102674635 A CN2012102674635 A CN 2012102674635A CN 201210267463 A CN201210267463 A CN 201210267463A CN 102764552 A CN102764552 A CN 102764552A
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Abstract
The invention discloses a differential air-pressure spray dust removing system and solves the problems that power potential energy losing after deceleration of motorized or non-motorized objects by deceleration strips or public place buffering is not utilized effectively, current dust removing systems are complicated in structure, high in cost, need external power supplies or other power supplies in the prior art. The spray dust removing system comprises a deceleration strip, air sacs, a water and pressure storage device, and a spray actuation mechanism. The air sacs are disposed in the deceleration strip or a public passage. The water and pressure storage device is communicated with the air sacs through an air guide tube. The spray actuation mechanism is disposed on the water and pressure storage device. The water and pressure storage device mainly comprises a water and pressure storage tank. The spray actuation mechanism comprises a flow guide tube. The lower end of the flow guide tube penetrates into the water and pressure storage tank. The upper end of the flow guide tube is located outside the water and pressure storage tank. A spray nozzle is disposed at the upper end of the flow guide tube. The invention further discloses an implementation method of the spray dust removing system. The spray dust removing system is simple in structure, convenient to implement, energy-saving and environment-friendly.
Description
Technical field
What the present invention relates to is environmental protection dedusting field, specifically, is that a kind of draught head that utilizes realizes that pressure control and abundant collection utilize the physics power of public place loss and the auto spraying of natural precipitation to remove system.
Background technology
Deceleration strip also is deceleration ridge, is mounted in the means of transportation of the vehicle deceleration that makes process on the highway, and shape is generally strip, and point-like is also arranged, and material mainly is rubber or metal; It is mainly used in places such as highway road junction, industrial and mining enterprises, school, residential quarters, in order to the special-purpose security set of the traffic of reductor motor-car, bicycle speed.Vehicle can be lost a part of power potential energy through deceleration strip, and reaching the deceleration purpose, and the potential energy of this part forfeiture at present and be underutilized.
On the other hand; The method effectively the most easily that the experiment proof reduces pm2.5 concentration is exactly through the water smoke humidification; Vehicle exhaust also is the key factor that causes pm2.5 concentration to strengthen day by day simultaneously, therefore, all can use the water mist dust-removing system in urban construction or the highway construction environment is purified.Yet the prior dedusting system is complex structure, with high costs not only, and needs the power supply of external power supply as dust pelletizing system, to such an extent as to increased the local finance burden, and be difficult to be widely used in large quantities the public place.All there are significant limitation in above-mentioned two kinds of facilities or equipment, and to the defective of the wasting of resources, and in the prior art also not with the precedent that potential energy is collected and rainwater utilization is used in combination of public place decay.
Summary of the invention
The objective of the invention is to overcome above-mentioned defective, will decay kinetic energy collecting and rainwater utilization combine to be used, provide a kind of simple in structure, realize convenient, with low cost differential air-blast atomizing dust pelletizing system.
To achieve these goals, the technical scheme of the present invention's employing is following:
Differential air-blast atomizing dust pelletizing system comprises deceleration strip, is arranged at the air bag in the deceleration strip, and the water storage device that is communicated with this air bag through wireway stores up pressure device, and is arranged on the spraying executing agency on the water storage device storage pressure device.
Further, said water storage device storage pressure device comprises the water storage accumulator that is communicated with said wireway, and is arranged on the unidirectional feed liquor valve on this water storage accumulator sidewall.
Specifically, the said executing agency that sprays comprises that water storage accumulator inside is stretched in the lower end, the upper end is positioned at the outside mozzle of water storage accumulator, and on the sidewall of this mozzle upper end, also is provided with nozzle.
Simultaneously, also be provided with on the said mozzle be positioned at below the nozzle, in order to the pressure release mechanism of control water storage accumulator institute water storage one-way flow.
Perhaps, said pressure release mechanism is formed in order to the differential ball valve or the differential ball-cock assembly of control mozzle connected state by being arranged on the mozzle and being positioned at the nozzle below.
In order to prevent that gas from flowing backwards, and also is provided with the non-return air valve on said wireway.
Further, also be provided with in order to get rid of the blowoff valve of its bottom dirt in said water storage accumulator bottom.
In order to realize the present invention better; Said water storage device storage pressure device also comprises the sedimentation filtering ponds that are communicated with the water storage accumulator; In view of demand attractive in appearance; These sedimentation filtering ponds can be collects the rainwater water scenery pond that the highway rainwater is built, or relies on and collect rainwater water tank or the rainwater water scenery pond that the skyscraper rainwater is built.
The implementation method of differential air-blast atomizing dust pelletizing system may further comprise the steps:
(1) water storage accumulator storage moisture and pressure;
(2) press down or push deceleration strip, thus the air in the compressing gasbag;
(3) air bag is delivered to its air that contains at a high speed in the water storage accumulator through wireway;
(4) pressure air in the water storage accumulator upwards pushes the moisture in the water storage accumulator through mozzle;
(5) pressure air and the moisture combination in the water storage accumulator opened differential ball valve, or differential ball-cock assembly, makes mozzle be communicated with up and down;
(6) moisture is realized dedusting by the nozzle ejection of mozzle upper end.
Wherein, the concrete implementation method of said step (1) is: said water storage accumulator is placed in the stormwater tank, after the ponding liquid level reaches the position of unidirectional feed liquor valve on its sidewall in the pond, goes in the water storage accumulator via unidirectional feed liquor valve flow; Perhaps moisture is stored in the sedimentation filtering ponds, after carrying out sedimentation and filtering, flows in the water storage accumulator again.
The present invention compared with prior art has the following advantages and beneficial effect:
(1) the present invention is provided with some air bags in deceleration strip, and air bag is communicated with through wireway and water storage device storage pressure device, and perhaps other is motor-driven, non-maneuvering object presses down or when pushing deceleration strip when automobile; Air bag in the deceleration strip will also pass through wireway with in air compressing storing to the water storage accumulator by compressed air, and when pressure store acquired a certain degree in the jar, the differential ball valve on the water storage accumulator was opened; The jar internal gas pressure promotes jar interior water and sprays from nozzle; This system is the deceleration strip use that combines with cleaner and rainwater utilization, and it has effectively utilized in the daily life through the deceleration strip power potential energy that back vehicle or other object lost that slows down on the one hand under the prerequisite that guarantees the deceleration strip normal function; This part kinetic energy is converted into compressed-air actuated potential energy; To dust pelletizing system thereby power output is provided as power, need not again external power supply or other power-equipment, not only reduced energy consumption; And by the physics power source dedust power is provided fully; Realized environmental protection truly, to China's environment, and even the environment of All Around The World all is significant;
(2) water storage accumulator of the present invention generally is placed on rainwater water scenery pond or is communicated with the rainwater storage tank, and rainwater water scenery pond or rainwater storage tank be in order to reception, gathering, sedimentation nature rainwater, and then rainwater is stored in the water storage accumulator through the water inlet check valve; At last; Spray through nozzle,, after this system spreads to a certain degree, can effectively utilize precipitation in order to the dedusting cooling; And rainwater is through the memory by using of overrange property; Can slow down the pressure of sewerage system, play the storage rainwash, alleviate the pressure of city flood discharge widely;
(3) the present invention mainly is made up of deceleration strip, water storage accumulator and spraying actuating equipment; Its structure is effectively improved than the prior dedusting system, and cost is cheaper, and regular maintenance is also quite simple; Even Maintenance free; System's structure is then very novel, compared with prior art, has very high creativeness;
(4) the present invention has also designed sedimentation filtering ponds and has been communicated with the water storage accumulator, as another kind of optimized technical scheme on the basis of basic structure; These sedimentation filtering ponds can carry out sedimentation with moisture and filter in order to the storage of water branch on the one hand again, clean more, the environmental protection of the moisture that makes dust pelletizing system spray; On the other hand; In the sedimentation filtering ponds, add water, can guarantee that dust pelletizing system at any time can both operate as normal, avoided regional precipitation not enough and influence the defective of dust pelletizing system dedusting operation.
Description of drawings
Fig. 1 is the structural representation of the present invention-embodiment 1.
Fig. 2 is the structural representation of the present invention-embodiment 2.
Fig. 3 is the partial schematic diagram of the present invention-embodiment 4.
Fig. 4 is the partial schematic diagram of the present invention-embodiment 3.
Fig. 5 is for being provided with the partial schematic diagram of differential ball-cock assembly among the present invention.
Fig. 6 is the structural representation of other a kind of nozzle among the present invention.
Fig. 7 is the combining structure sketch map of other a kind of nozzle and mozzle.
Fig. 8 is the structural representation of air bag and wireway.
In the above-mentioned accompanying drawing, the name that Reference numeral is corresponding is called: 1-deceleration strip, 2-air bag, 3-wireway, 4-water storage accumulator; The 5-mozzle, 6-nozzle, the unidirectional feed liquor valve of 7-, the differential ball valve of 8-, 9-safety valve; 10-non-return air valve, 11-blowoff valve, 12-sedimentation filtering ponds, the differential ball-cock assembly of 13-.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing thereof the present invention is done to specify further, but embodiment of the present invention is not limited thereto.
Embodiment 1
At present, be used for the dedusting cooling system of highway construction, urban construction, structure is all very complicated; And to need external power supply or other power source be that dust pelletizing system provides power; Just can make dust pelletizing system work, its cost is not only higher, and also very inconvenience of regular maintenance; And be applied to the deceleration strip of highway, sub-district, after motor-driven, non power driven vehicle slows down through deceleration strip, can lose a part of power potential energy; After the power potential energy of being lost reaches ground; Fade away, do not effectively utilized, the present invention is after the situation of having considered above-mentioned two kinds of equipment or facility prior art; Through performing creative labour, designed a kind of with the two novel dust removing system that combines.
As shown in Figure 1, differential air-blast atomizing dust pelletizing system, this system are mainly by the deceleration strip 1 that is installed on the highway; Some air bags 2 that are arranged on deceleration strip 1 inside; And pass through water storage accumulator 4 formations that wireway 3 is communicated with air bag 2, and as shown in Figure 8, in air bag 2, be provided with unidirectional air admission hole; In deceleration strip 1, be formed with the gas circuit that is communicated with each air bag 2,3 of wireways directly are connected with this gas circuit; Wherein, water storage accumulator 4 not only can be stored moisture, but also store compressed gas; To guarantee the air pressure in it, usually, water storage accumulator 4 is placed in the stormwater tank; Stormwater tank is common pond, also can be to collect the rainwater water scenery pond that the highway rainwater is built, or relies on and collect rainwater water tank or the rainwater water scenery pond that the skyscraper rainwater is built; It it is utilized once more, and rainwater is through the storage of overrange property in order to reception, gathering, the daily rainwater of sedimentation; It is difficult to wantonly plunder, and then has improved rainwash, alleviates the pressure of city flood discharge widely; On the sidewall of water storage accumulator 4, be provided with unidirectional feed liquor valve 7, after the ponding liquid level in the stormwater tank reaches the position of unidirectional feed liquor valve 7, subsequent use via storing in the unidirectional feed liquor valve 7 inflow water storage accumulators 4.
Need to prove that air bag 2 can be arranged on the public place that highway, corridor etc. have the kinetic energy decay to require, through air bag 2 acting decay kinetic energy are converted into compressed air potential energy; As: the side that keeps left that air bag 2 is arranged on corridor in the public place is (at lower over against stair; Mostly the principle because the pedestrian keeps right, left side are that corridor is in the majority down, and have cushioning effect to descending pedestrian this moment; Simultaneously also can collect gravitional force; Compressing gasbag forms compressed air better), form compressed air through descending pedestrian's gravitional force compressing gasbag; Thereby realize that outside spraying apparatus provides power, overcome the defective that spraying apparatus in the prior art need provide actuating units such as power supply or hydraulic pressure separately.
Present embodiment is equipped with a spraying executing agency that is made up of mozzle 5 on water storage accumulator 4.When automobile, people or other non power driven vehicles slow down through deceleration strip 1; To deceleration strip 1 acting; The mechanical potential of its forfeiture converts power potential energy into, thereby forces air bag 2 compressed air, and the air high-speed transfer after will compressing through wireway 3 and being stored in the water storage accumulator 4; It provides dedust power by the physics power source fully, has realized environmental protection truly; Usually, the gas outlet of wireway 3 is arranged on the lower end of water storage accumulator 4, and air-flow is after the gas outlet gets into water storage accumulator 4; A part is dissolved with water, and another part rises in water storage accumulator 4, when it rises to the top; Because water storage accumulator 4 is airtight, after compressed air gets into water storage accumulator 4, form air pressure; At this moment, under the effect of air pressure, the moisture in the water storage accumulator 4 rises through mozzle 5.
On above-mentioned basis, present embodiment is provided with a pressure relief unit at the medium position of mozzle 5, and it is formed in order to the differential ball-cock assembly 13 of control mozzle 5 connected states by being arranged on the mozzle 5 and being positioned at nozzle 6 belows; As shown in Figure 5, the basic structure of this differential ball-cock assembly is the same with ball-cock assembly on the market, and its difference is that present embodiment is improved to soft ball float with the ball float of ball-cock assembly by original hard ball float; It contacts with tank level or is positioned at the liquid level below, and rainwater gets into the water storage accumulator through unidirectional feed liquor valve 7 (certain closing force being arranged, to guarantee in the water intaking of water body middle part); Tank level rises, deformable ball float under buoyancy, closure; At this moment, accomplish the water inlet process, compressing gasbag is to water storage accumulator input air; The jar internal gas pressure rises, and the air pressure in jar internal gas pressure and the differential ball valve ball float forms draught head, makes ball float compression; Buoyancy descends, and after being deformed to a certain degree, differential ball-cock assembly 13 is opened; The jar internal pressure discharges, and water outwards sprays through mozzle 5, forms spraying.
Present embodiment has also designed other a kind of technical scheme; Medium position at mozzle 5 is provided with a pressure relief unit; And mozzle 5 comprises a spraying mozzle that is provided with nozzle, and an other lower end port stretches into water storage accumulator 4 inside and is positioned at the major flow duct below the tank level; Pressure release mechanism then comprises the diffusion cavity that is communicated with and is communicated with the major flow duct upper end with spraying mozzle lower end; And be arranged on the differential ball valve 8 in this diffusion cavity; Usually; The spheroid that differential ball valve 8 is processed for plastic cement material, a plastic cement ball internal pressure and a jar internal pressure differences cause the compression of plastic cement ball.Airtight plastic cement spheroid in the differential ball valve 8 is according to jar internal pressure and self internal pressure difference generation compression, and power or buoyancy change are out of shape in generation thus, realize the switching of differential ball valve 8, thereby realizes the pressure control of differential water storage accumulator.When dust pelletizing system was not worked, differential ball valve 8 was positioned at the bottom of diffusion cavity, blocks mozzle 5; When the jar internal gas pressure greater than differential ball valve 8 plastic cement ball air pressure inside, then compress the plastic cement ball of differential ball valve 8, force its compression; The mechanical force that is produced by compression realizes that mozzle 5 is communicated with; After differential ball valve 8 was communicated with, pot liquid was accomplished spraying work through being arranged on nozzle 6 ejections on the mozzle 5.
The basis of realizing present embodiment is that the flow direction of air and liquid all is required to be one-way movement, so present embodiment also is provided with a non-return air valve 10 in order to prevent that gas from flowing backwards near the gas outlet of wireway 3.
In order to guarantee the clean of moisture that dust pelletizing system is sprayed; Also be provided with a blowoff valve 11 in the bottom of water storage accumulator 4; The impurity that is deposited on water storage accumulator 4 bottoms is discharged outside the water storage accumulator 4 through blowoff valve 11; Thereby improved the clean level of this system's sprinkling moisture, guaranteed dust removing effects effectively.
As shown in Figure 2, the difference of present embodiment and embodiment 1 is, is provided with safety valve 9 in the diffusion cavity in the pressure relief unit, and it is through jar interior with an extraneous draught head, and one-sided outwards unlatching only allows current and the air pressure stream upper end to mozzle 5.
As shown in Figure 4; The difference of present embodiment and embodiment 1 is; Also set up sedimentation filtering ponds 12, these sedimentation filtering ponds 12 are communicated with water storage accumulator 4, and it is available on the one hand with storage moisture; Again moisture is carried out sedimentation and filter, clean more, the environmental protection of the moisture that makes dust pelletizing system spray; On the other hand, in the sedimentation filtering ponds, add water, can guarantee that dust pelletizing system at any time can both operate as normal, avoided regional precipitation not enough and influence the defective of dust pelletizing system dedusting operation.
As shown in Figure 3; The difference of present embodiment and embodiment 2 is; Also set up sedimentation filtering ponds 12, these sedimentation filtering ponds 12 are communicated with water storage accumulator 4, and it is available on the one hand with storage moisture; Again moisture is carried out sedimentation and filter, clean more, the environmental protection of the moisture that makes dust pelletizing system spray; On the other hand, in the sedimentation filtering ponds, add water, can guarantee that dust pelletizing system at any time can both operate as normal, avoided regional precipitation not enough and influence the defective of dust pelletizing system dedusting operation.
According to the foregoing description, can well realize the present invention.Need to prove that the design of nozzle 6 can be provided with according to actual needs, usually; It can be arranged on the sidewall of mozzle 5; Also can set up a sprayer unit as shown in Figure 6 at the upper end of mozzle 5 port, the combined shaped of itself and mozzle 5 is as shown in Figure 7, uses this device and carries out spray for dust suppression; Its spraying coverage rate is wider, and efficiency of dust collection is higher.
Claims (10)
1. differential air-blast atomizing dust pelletizing system; It is characterized in that: comprise deceleration strip (1); Be arranged at the air bag (2) in the deceleration strip (1), the water storage device that is communicated with this air bag (2) through wireway (3) stores up pressure device and is arranged on the spraying executing agency on the water storage device storage pressure device.
2. differential air-blast atomizing dust pelletizing system according to claim 1; It is characterized in that: said water storage device storage pressure device comprises the water storage accumulator (4) that is communicated with said wireway (3), and is arranged on the unidirectional feed liquor valve (7) on this water storage accumulator (4) sidewall.
3. differential air-blast atomizing dust pelletizing system according to claim 2; It is characterized in that: the said executing agency that sprays comprises that water storage accumulator (4) inside is stretched in the lower end, the upper end is positioned at the outside mozzle (5) of water storage accumulator (4), and also is provided with nozzle (6) in the upper end of this mozzle (5).
4. differential air-blast atomizing dust pelletizing system according to claim 3 is characterized in that: on said mozzle (5), also be provided be positioned at nozzle (6) below, in order to the pressure release mechanism of control water storage accumulator (4) institute water storage one-way flow.
5. differential air-blast atomizing dust pelletizing system according to claim 4 is characterized in that: said pressure release mechanism upward and below being positioned at nozzle (6) is formed in order to the differential ball valve (13) or the differential ball-cock assembly (8) of control mozzle (5) connected state by being arranged on mozzle (5).
6. according to each described differential air-blast atomizing dust pelletizing system of claim 2～5, it is characterized in that: on said wireway (3), also be provided with the non-return air valve (10) that prevents that gas from flowing backwards.
7. differential air-blast atomizing dust pelletizing system according to claim 6 is characterized in that: also be provided with in order to get rid of the blowoff valve (11) of its bottom dirt in said water storage accumulator (4) bottom.
8. differential air-blast atomizing dust pelletizing system according to claim 7 is characterized in that: said water storage device storage pressure device also comprises the sedimentation filtering ponds (12) that are communicated with water storage accumulator (4).
9. the implementation method of differential air-blast atomizing dust pelletizing system is characterized in that, may further comprise the steps:
(1) water storage accumulator storage moisture and pressure;
(2) press down or push deceleration strip, thus the air in the compressing gasbag;
(3) air bag is delivered to its air that contains at a high speed in the water storage accumulator through wireway;
(4) pressure air in the water storage accumulator upwards pushes the moisture in the water storage accumulator through mozzle;
(5) pressure air and the moisture combination in the water storage accumulator opened differential ball valve or differential ball-cock assembly, makes mozzle be communicated with up and down;
(6) moisture is realized dedusting by the nozzle ejection of mozzle upper end.
10. the implementation method of differential air-blast atomizing dust pelletizing system according to claim 9; It is characterized in that; The concrete implementation method of said step (1) is: said water storage accumulator is placed in the stormwater tank; After the ponding liquid level reaches the position of unidirectional feed liquor valve on its sidewall in the pond, go in the water storage accumulator via unidirectional feed liquor valve flow; Perhaps moisture is stored in the sedimentation filtering ponds, after carrying out sedimentation and filtering, flows in the water storage accumulator again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210267463.5A CN102764552B (en) | 2012-07-31 | 2012-07-31 | Differential air-pressure spray dust removing system and implementation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210267463.5A CN102764552B (en) | 2012-07-31 | 2012-07-31 | Differential air-pressure spray dust removing system and implementation method thereof |
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| Publication Number | Publication Date |
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| CN102764552A true CN102764552A (en) | 2012-11-07 |
| CN102764552B CN102764552B (en) | 2014-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210267463.5A Expired - Fee Related CN102764552B (en) | 2012-07-31 | 2012-07-31 | Differential air-pressure spray dust removing system and implementation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108301341A (en) * | 2018-02-11 | 2018-07-20 | 蒋昌霞 | A kind of applicable township road, high-speed, multi-path type deceleration driven |
| CN108914830A (en) * | 2018-07-18 | 2018-11-30 | 肖四杨 | It is a kind of can according to work and rest adjust automatically dedusting isolation pile |
| CN110984014A (en) * | 2019-12-25 | 2020-04-10 | 杨程聆 | Self-interacting deceleration strip that security performance is high |
| CN111135654A (en) * | 2020-01-14 | 2020-05-12 | 赤峰恒诚建筑工程有限公司 | Dust removal device and dust removal method for green building construction |
| CN112458944A (en) * | 2020-11-17 | 2021-03-09 | 周哲俊 | Sponge city is with preventing deceleration strip that exceeds speed |
| CN112641289A (en) * | 2020-12-22 | 2021-04-13 | 上海特坚信息技术有限公司 | Intelligent manufacturing animation display rack based on automatic wind power lifting gravity center |
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| CN2087213U (en) * | 1990-12-06 | 1991-10-23 | 张宗全 | Device removing dust fromroad equiped on automobile |
| CN102588235A (en) * | 2012-03-05 | 2012-07-18 | 刘亮华 | Power generating device for road deceleration strip |
| CN202658545U (en) * | 2012-07-31 | 2013-01-09 | 吴英戈 | Differential action air pressure atomizing and de-dusting system |
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2012
- 2012-07-31 CN CN201210267463.5A patent/CN102764552B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2087213U (en) * | 1990-12-06 | 1991-10-23 | 张宗全 | Device removing dust fromroad equiped on automobile |
| CN102588235A (en) * | 2012-03-05 | 2012-07-18 | 刘亮华 | Power generating device for road deceleration strip |
| CN202658545U (en) * | 2012-07-31 | 2013-01-09 | 吴英戈 | Differential action air pressure atomizing and de-dusting system |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108301341A (en) * | 2018-02-11 | 2018-07-20 | 蒋昌霞 | A kind of applicable township road, high-speed, multi-path type deceleration driven |
| CN108301341B (en) * | 2018-02-11 | 2020-02-04 | 邹海娟 | Be suitable for rural area, high-speed multiple unit type road deceleration strip |
| CN108914830A (en) * | 2018-07-18 | 2018-11-30 | 肖四杨 | It is a kind of can according to work and rest adjust automatically dedusting isolation pile |
| CN110984014A (en) * | 2019-12-25 | 2020-04-10 | 杨程聆 | Self-interacting deceleration strip that security performance is high |
| CN111135654A (en) * | 2020-01-14 | 2020-05-12 | 赤峰恒诚建筑工程有限公司 | Dust removal device and dust removal method for green building construction |
| CN112458944A (en) * | 2020-11-17 | 2021-03-09 | 周哲俊 | Sponge city is with preventing deceleration strip that exceeds speed |
| CN112641289A (en) * | 2020-12-22 | 2021-04-13 | 上海特坚信息技术有限公司 | Intelligent manufacturing animation display rack based on automatic wind power lifting gravity center |
| CN112641289B (en) * | 2020-12-22 | 2022-12-06 | 南京快转科技有限公司 | Intelligent manufacturing animation display rack based on automatic wind power lifting gravity center |
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| CN102764552B (en) | 2014-06-18 |
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