Environmentally friendly dust removal equipment used in building construction

Abstract

The present invention relates to the technical field of dust removal equipment, specifically to an environmentally friendly dust removal equipment used in construction, including a spray tank fixedly mounted on the upper surface of a support frame and a stirring rod rotatably mounted on the inner bottom wall of the spray tank, an air intake structure fixedly connected to the side wall of the spray tank, a dust removal device is arranged on the spray tank, and the dust removal device includes a water delivery boost structure, a nozzle structure and an expansion zone; the water delivery boost structure includes a pump housing fixedly mounted on the lower surface of the support frame, a gear set rotatably arranged inside the pump housing and meshing with each other, and a water delivery pipe fixedly connected to the opposite side of the pump housing. The present invention is based on the flow velocity change principle in fluid dynamics, and through its unique convergence and expansion structure, the water flow is accelerated and a strong jet force is generated, the expansion zone is designed to be retractable, and a plurality of conical sleeves stacked in sequence from small to large are used, which can flexibly adapt to different flow requirements and working environments, and effectively improve the dust reduction effect.

Description

Technical Field

[0001] The invention relates to an environmentally friendly dust removal device used in building construction, in particular to an environmentally friendly dust removal device used in building construction, and belongs to the technical field of dust removal equipment. Background Art

[0002] The characteristics of the construction environment usually include open-air work, high-altitude work, and cross-work. These factors cause a large amount of dust and dust to be generated at the construction site. In order to improve the construction environment, protect the health of workers, and reduce air pollution, various dust collection equipment is usually used for dust removal at the construction site. At the construction site, appropriate dust collection equipment should be selected according to the actual situation. For areas with large amounts of dust, such as excavation and crushing, wet dust collectors or spray dust removal equipment can be considered; for places that require high-efficiency dust removal and have high requirements for dust removal effects, such as indoor decoration and other areas, electrostatic dust collectors or dry dust collectors can be considered.

[0003] Chinese invention patent publication number CN118105803A discloses "an anti-clogging wet dust collector based on the comprehensive utilization of steel slag, including a base, which is used to support the entire equipment, a motor is fixedly connected to the bottom of the base, and the output end of the motor passes through the base, and the air intake assembly includes an air intake pipe, which is fixedly connected to the outer wall of the shell, and the air intake pipe is connected to the shell, and the end of the air intake pipe away from the shell is fixedly connected to a feed hopper, and the end of the feed hopper away from the air intake pipe is fixedly connected to a filter. In this anti-clogging wet dust collector based on the comprehensive utilization of steel slag, small particles of steel slag in the gas are retained on the filter through the filter, thereby preventing small particles of steel slag from remaining on the inner wall of the air intake pipe. With the continuous use of the dust collector, small particles of steel slag attached to the inner wall of the air intake pipe will accumulate more and more, and then the air intake pipe will be blocked, affecting the normal operation of the dust collector."

[0004] The above patent has the following shortcomings: if the water spray range cannot be adjusted, it will bring a series of significant defects, which are mainly reflected in the dust removal effect, resource utilization, equipment flexibility and environmental impact, so it cannot meet the use requirements.

[0005] Therefore, it is urgent to improve the dust removal equipment to solve the above-mentioned problems. Summary of the invention

[0006] The purpose of the present invention is to provide an environmentally friendly dust removal equipment for use in construction. Based on the principle of flow velocity change in fluid dynamics, the water flow is accelerated and a strong jet force is generated through its unique convergence and expansion structure. The expansion area is designed to be retractable, and a plurality of conical sleeves stacked in sequence from small to large are adopted. It can flexibly adapt to different flow requirements and working environments, and effectively improve the dust reduction effect.

[0007] In order to achieve the above-mentioned purpose, the main technical scheme adopted by the present invention includes: an environmentally friendly dust removal device applied to construction, comprising a spray tank fixedly mounted on the upper surface of a support frame and a stirring rod rotatably mounted on the inner bottom wall of the spray tank, an air intake structure is fixedly connected to the side wall of the spray tank, and a dust removal device is arranged on the spray tank, and the dust removal device includes a water delivery and pressurization structure, a nozzle structure and an expansion area;

[0008] The water delivery and pressure boosting structure comprises a pump casing fixedly mounted on the lower surface of the support frame, a gear set rotatably disposed inside the pump casing and meshing with each other, and a water delivery pipe fixedly connected to the opposite side of the pump casing;

[0009] The spray pipe structure includes a first expansion pipe fixedly mounted on the top wall of the spray tank, a second expansion pipe arranged at the bottom end of the first expansion pipe, and a throat pipe fixedly connected between the first expansion pipe and the second expansion pipe, the two water pipes are fixedly connected to the bottom wall of the spray tank and the first expansion pipe at one end, and the throat pipe is composed of a first contraction pipe and a second contraction pipe connected in a telescopic manner;

[0010] The expansion zone includes a first conical sleeve, a second conical sleeve and a third conical sleeve which are slidably connected and distributed up and down, and the first conical sleeve is installed at the bottom end of the second expansion tube by bolts;

[0011] The spray tank is provided with a hydraulic pushing mechanism extending into the first expansion tube and pushing the throat tube to expand and contract. The hydraulic pushing mechanism includes a cylinder frame fixedly mounted on the top of the spray tank, a hydraulic push rod bolted on the cylinder frame, a disc fixedly mounted on the output end of the hydraulic push rod, and a vertical rod and a circular rod fixedly mounted on the lower surface of the disc. The bottom end of the circular rod is fixedly mounted with a piston block that is in sliding contact with the inner wall of the first expansion tube.

[0012] A connecting piece is installed between the second expansion tube and the outer wall of the third tapered sleeve.

[0013] Preferably, the interior of the spray tank is hollow, and an air duct connected to the exhaust device is fixedly connected to the upper surface of the spray tank.

[0014] Preferably, the air intake structure comprises a feed nozzle and a connecting pipe which are fixedly connected, and one end of the connecting pipe away from the feed nozzle is fixedly connected to the spray tank.

[0015] Preferably, the air intake structure also includes an elastic filter screen fixedly installed on the inner side of one end of the feed nozzle away from the connecting pipe, and a connecting shaft fixedly connected to the elastic filter screen on the side close to the connecting pipe. A baffle is hingedly installed on the inner wall of the connecting pipe, and a like-charged repelling magnetic block is installed between the connecting shaft and the baffle. A torsion spring is provided at the connection between the baffle and the connecting pipe.

[0016] Preferably, the first shrinkable tube and the second shrinkable tube are slidably matched to extend the throat, the inner diameter of the throat is smaller than the first expandable tube and the second expandable tube, and the piston block is located above the connection between the water pipe and the first expandable tube.

[0017] Preferably, the bottom end of the second shrink tube is fixedly connected to the second expandable tube, and the first shrink tube is fixedly connected to the first expandable tube. Since the throat is smaller than the first and second expandable tubes, radial pressurization is achieved when water enters the throat.

[0018] Preferably, the first tapered sleeve, the second tapered sleeve and the third tapered sleeve are distributed in order from small to large, and the inner sides of the first tapered sleeve and the second tapered sleeve are fixedly installed with guide blocks, and the outer walls of the second tapered sleeve and the third tapered sleeve are provided with guide grooves that are slidably matched with the guide blocks;

[0019] The second tapered sleeve and the third tapered sleeve are installed in sequence by slidingly cooperating with the guide block and the guide groove to realize the contraction of the expansion zone.

[0020] Preferably, a pump cavity is opened inside the pump housing, and the gear set includes two gears meshing with each other, and the two gears are adapted to the pump cavity and rotatably arranged in the pump cavity.

[0021] Preferably, a dual-axis motor is installed on the lower surface of the support frame by bolts, the bottom end of the stirring rod extends to the outside of the spray tank and is connected and fixed to one of the output shafts of the dual-axis motor, and a synchronization structure is installed between the other output shaft of the dual-axis motor and the water supply and boosting structure.

[0022] Preferably, the synchronization structure is composed of meshing transmission gears, synchronization shafts, synchronization wheels and synchronization belts;

[0023] Among them, the transmission gear part includes a transmission gear and a driven gear, and there are two synchronous shafts and two synchronous wheels, and the two synchronous shafts are respectively connected and fixed to the transmission gear and the driven gear, and the other end of the synchronous shaft connected and fixed to the driven gear is connected to one of the gears of the gear set, and the two synchronous wheels are respectively fixedly installed on the bottom synchronous shaft and the output shaft of the dual-axis motor, and the synchronous belt drive is connected between the two synchronous wheels.

[0024] The present invention has at least the following beneficial effects:

[0025] 1. This environmental dust removal equipment used in construction is based on the flow velocity change principle in fluid dynamics. Through its unique convergence and expansion structure, it accelerates the water flow and generates a strong jet force. The expansion area is designed to be retractable, and multiple conical sleeves are stacked in order from small to large. It can flexibly adapt to different flow requirements and working environments, and effectively improve the dust reduction effect;

[0026] 2. When dust reduction needs to be enhanced, start the hydraulic telescopic rod. Through the installation of the vertical rod and the circular rod, the vertical rod drives the throat to extend, and the circular rod drives the piston block to move. The first conical sleeve, the second conical sleeve and the third conical sleeve are telescopically adjusted with the connecting piece. When the throat length is extended and the angle of the expansion zone is appropriate, the flow trajectory of the water flow in the nozzle is more stable, the deflection and fluctuation of the water flow are reduced, which helps to ensure the stability and consistency of the injection. In combination with the retractable expansion zone, the acoustic characteristics of the fluid flow can be effectively changed, thereby reducing the generation and propagation of noise, increasing the passage area of ​​the fluid, and allowing the flow rate to be increased as needed;

[0027] At the same time, by installing the piston block, when the piston block moves downward in the nozzle structure, it will compress the water in the nozzle structure, thereby increasing the pressure of the fluid and realizing double-layer pressurization with the water supply and boosting structure. This increase in pressure will cause the fluid to accelerate when passing through the nozzle throat, forming a high-speed jet stream. Due to the design characteristics of the nozzle structure, this acceleration effect will be further amplified in the nozzle expansion section, generating a stronger jet force, thereby improving the dust reduction effect.

[0028] 3. During use, as the length of the throat increases, the flow velocity and pressure distribution of the fluid in the pipeline will change, and the stacking design of the retractable expansion zone allows the size of the expansion zone to be adjusted according to actual needs, thereby achieving fine adjustment of the flow rate. When the flow rate needs to be increased, the conical sleeve can be expanded, and vice versa. In addition, as the length of the throat extends, the expansion zone becomes larger and can be used according to needs. The throat length and the shape and size of the expansion zone can be flexibly adjusted according to actual working conditions to adapt to various complex environments. By reasonably designing the shape and stacking method of the expansion zone, the acoustic characteristics of the fluid flow can be effectively changed, thereby reducing the generation and propagation of noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0030] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention;

[0031] Figure 2 It is a front view of the spray tank structure of the present invention;

[0032] Figure 3 It is a partial diagram of the water delivery and pressurization structure of the present invention;

[0033] Figure 4 It is a cross-sectional view of the air intake structure of the present invention;

[0034] Figure 5It is a schematic diagram of the nozzle structure, expansion area and hydraulic driving mechanism structure of the present invention;

[0035] Figure 6 The nozzle structure and expansion zone structure diagram of the present invention;

[0036] Figure 7 For the present invention Figure 1 A is a schematic diagram of the enlarged structure shown;

[0037] Figure 8 It is a structural diagram of the nozzle structure and the expansion zone after separation of the present invention;

[0038] Fig. 9 It is a three-dimensional diagram of the piston block and the nozzle structure of the present invention;

[0039] Fig.10 This is a structural diagram of the expansion area of ​​the present invention;

[0040] Fig.11 This is a structural diagram of the expansion zone after separation of the present invention;

[0041] Fig.12 is a cross-sectional view of the expansion area of ​​the present invention;

[0042] Fig.13 It is a cross-sectional structural diagram of the second tapered sleeve of the present invention.

[0043] In the figure, 1, spray tank; 2, air intake structure; 201, feed nozzle; 202, connecting pipe; 203, elastic filter; 204, connecting shaft; 205, baffle; 206, magnetic block; 3, water delivery and pressurization structure; 301, pump housing; 302, water delivery pipe; 303, pump cavity; 304, gear set; 4, nozzle structure; 401, first expansion pipe; 402, throat; 4021, first contraction pipe; 4022, second contraction pipe; 403, second expansion pipe; 404, connector; 5, Expansion zone; 501, first tapered sleeve; 502, second tapered sleeve; 503, third tapered sleeve; 504, guide block; 505, guide slide; 6, hydraulic push mechanism; 601, cylinder frame; 602, hydraulic push rod; 603, disc; 604, vertical rod; 605, circular rod; 606, piston block; 7, dual-axis motor; 8, support frame; 9, synchronous structure; 901, transmission gear part; 902, synchronous shaft; 903, synchronous wheel; 904, synchronous belt; 10, stirring rod. DETAILED DESCRIPTION

[0044] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0045] like Figure 1 - Figure 3 and Figure 5 As shown, the environmentally friendly dust removal equipment used in construction provided by this embodiment includes a spray tank 1 fixedly installed on the upper surface of a support frame 8 and a stirring rod 10 rotatably installed on the inner bottom wall of the spray tank 1, and an air intake structure 2 is fixedly connected on the side wall of the spray tank 1. The air intake structure 2 includes a fixedly connected feed nozzle 201 and a connecting pipe 202, and the end of the connecting pipe 202 away from the feed nozzle 201 is fixedly connected to the spray tank 1.

[0046] It should be noted that the interior of the spray tank 1 is hollow, and an air duct connected to the air extraction device is fixedly connected to the upper surface of the spray tank 1. The air intake structure 2 also includes an elastic filter 203 fixedly installed on the inner side of the end of the feed nozzle 201 away from the connecting pipe 202 and a connecting shaft 204 fixedly connected to the elastic filter 203 on the side close to the connecting pipe 202. A baffle 205 is hingedly installed on the inner wall of the connecting pipe 202, and a magnetic block 206 of the same polarity that repels each other is installed between the connecting shaft 204 and the baffle 205. A torsion spring is provided at the connection between the baffle 205 and the connecting pipe 202.

[0047] When this embodiment is in use, the gas containing impurities enters through the air intake structure 2, and the airflow blows the elastic filter 203 to drive the connecting shaft 204 to slide. At this time, the elastic filter 203 is elongated, so that the middle filter hole of the elastic filter 203 becomes smaller, so that the gas filtering effect is better, and the small particles of steel slag in the gas remain on the elastic filter 203, avoiding the small particles of steel slag from remaining on the inner wall of the inlet connecting pipe 202. When the connecting shaft 204 slides, the magnetic block 206 approaches the baffle 205 magnetic block 206. Under the action of the mutual repulsion between the two magnetic blocks 206 of the same pole and the airflow, the baffle 205 is flipped, and the external gas enters the spray tank 1 through the connecting pipe 202.

[0048] In addition, the connecting pipe 202 is flange-connected to the spray tank 1. When the air extraction is stopped, the elastic force of the elastic filter 203 facilitates the shaking off of impurities, and the connecting pipe 202 is disassembled later to facilitate the cleaning of the elastic filter 203.

[0049] In order to achieve environmentally friendly dust removal, in this embodiment, Figure 4 As shown, a dust removal device is provided on the spray tank 1, and the dust removal device includes a water delivery and pressurization structure 3, a nozzle structure 4 and an expansion area 5; the water delivery and pressurization structure 3 includes a pump housing 301 fixedly mounted on the lower surface of the support frame 8, a gear set 304 rotatably arranged inside the pump housing 301 and meshing with each other, and a water delivery pipe 302 fixedly connected to the opposite side of the pump housing 301; a pump cavity 303 is opened inside the pump housing 301, and the gear set 304 includes two gears meshing with each other, and the two gears are adapted to the pump cavity 303 and are rotatably arranged in the pump cavity 303.

[0050] Specifically, a dual-axis motor 7 is installed on the lower surface of the support frame 8 by bolts, the bottom end of the stirring rod 10 extends to the outside of the spray tank 1 and is connected and fixed to one of the output shafts of the dual-axis motor 7, and a synchronization structure 9 is installed between the other output shaft of the dual-axis motor 7 and the water supply boosting structure 3.

[0051] In this embodiment, if Figure 1 and Figure 4 As shown, the synchronous structure 9 is composed of a meshing transmission gear part 901, a synchronous shaft 902, a synchronous wheel 903 and a synchronous belt 904; wherein, the transmission gear part 901 includes a transmission gear and a driven gear, and there are two synchronous shafts 902 and two synchronous wheels 903, and the two synchronous shafts 902 are respectively connected and fixed to the transmission gear and the driven gear, and the other end of the synchronous shaft 902 connected and fixed to the driven gear is connected to one of the gears of the gear set 304, and the two synchronous wheels 903 are respectively fixedly installed on the bottom synchronous shaft 902 and the output shaft of the dual-axis motor 7, and the synchronous belt 904 is transmission-connected between the two synchronous wheels 903.

[0052] When in use, the dual-axis motor 7 is used to drive the stirring rod 10 and the water supply and boosting structure 3. The stirring rod 10 can make the airflow and water in the spray tank 1 fully contact, so that the particles in the airflow and the water are combined and settled. The water supply and boosting structure 3 can extract the water inside the spray tank 1 for dust reduction treatment, thereby improving the utilization rate of water sources.

[0053] In addition, in order to better perform the water pumping work, a filtering mechanism connected to the bottom water pipe 302 is installed in the spray tank 1 to prevent impurities from entering the water supply and boosting structure 3 and causing damage.

[0054] In this embodiment, if Figure 1 - Figure 3 , Figure 6 - Fig.13As shown, the nozzle structure 4 includes a first expansion tube 401 fixedly mounted on the inner top wall of the spray tank 1, a second expansion tube 403 arranged at the bottom end of the first expansion tube 401, and a throat 402 fixedly connected between the first expansion tube 401 and the second expansion tube 403. The two water delivery pipes 302 are fixedly connected to the inner bottom wall of the spray tank 1 and the first expansion tube 401 at one end, respectively. The throat 402 is composed of a first contraction tube 4021 and a second contraction tube 4022 connected in a telescopic manner; the first contraction tube 4021 and the second contraction tube 4022 are slidably matched to achieve the extension of the throat 402, and the inner diameter of the throat 402 is smaller than that of the first expansion tube 401 and the second expansion tube 4022. The second expansion tube 403, the spray tank 1 is provided with a hydraulic pushing mechanism 6 extending into the first expansion tube 401 and pushing the throat 402 to expand and contract, the hydraulic pushing mechanism 6 includes a cylinder frame 601 fixedly mounted on the top of the spray tank 1, a hydraulic push rod 602 bolted on the cylinder frame 601, a disc 603 fixedly mounted on the output end of the hydraulic push rod 602, and a vertical rod 604 and a circular rod 605 fixedly mounted on the lower surface of the disc 603, the bottom end of the circular rod 605 is fixedly mounted with a piston block 606 that is in sliding contact with the inner wall of the first expansion tube 401, and the piston block 606 is located above the connection between the water delivery pipe 302 and the first expansion tube 401. A connecting piece 404 is installed between the second expansion tube 403 and the outer wall of the third conical sleeve 503. The bottom end of the vertical rod 604 is connected to the connecting piece 404.

[0055] It should be noted that the bottom end of the second contraction tube 4022 is fixedly connected to the second expansion tube 403, and the first contraction tube 4021 is fixedly connected to the first expansion tube 401. Since the throat 402 is smaller than the first expansion tube 401 and the second expansion tube 403, radial pressurization is achieved when the water enters the throat 402. As the length of the throat 402 increases, the flow velocity and pressure distribution of the fluid in the pipeline will change, so that the water flow has a higher speed when it reaches the throat 402.

[0056] In addition, by utilizing the extension and retraction of the hydraulic push rod 602, when the piston block 606 moves in the nozzle structure 4, it is double-layered with the water delivery boost structure 3, and the piston block 606 stirs the fluid to promote the mixing of the fluid and the air. Especially at the outlet of the nozzle structure 4, the high-speed sprayed fluid and the surrounding air have a violent shearing effect, which helps to atomize the fluid into smaller droplets. This atomization effect is of great significance for improving dust reduction efficiency, promoting chemical reactions or improving the combustion process. At the same time, the reciprocating motion of the piston block 606 also helps to clean the inside of the nozzle and prevent the deposition and clogging of impurities in the fluid, which is of great significance for keeping the nozzle unobstructed and extending its service life. Since the reciprocating motion of the piston block 606 can quickly change the fluid pressure and flow rate in the nozzle structure 4, this design helps to improve the response speed of the system. This rapid response capability is particularly important when it is necessary to quickly adjust the spray state or respond to emergencies.

[0057] In this embodiment, if Fig.10 - Fig.13 As shown, the expansion zone 5 includes a first conical sleeve 501, a second conical sleeve 502 and a third conical sleeve 503 which are slidably connected and arranged up and down, and the first conical sleeve 501 is installed at the bottom end of the second expansion tube 403 by bolts; the first conical sleeve 501, the second conical sleeve 502 and the third conical sleeve 503 are arranged in order from small to large, and the inner sides of the first conical sleeve 501 and the second conical sleeve 502 are fixedly installed with a guide block 504, and the outer walls of the second conical sleeve 502 and the third conical sleeve 503 are provided with a guide groove 505 which is slidably matched with the guide block 504; wherein, the second conical sleeve 502 and the third conical sleeve 503 are installed in order by using the guide block 504 to slide with the guide groove 505, so as to realize the contraction of the expansion zone 5. The telescopic length of the throat 402 is adapted to the telescopic range of the expansion zone 5.

[0058] It can be understood that the stacking design of the retractable expansion zone 5 allows the size of the expansion zone 5 to be adjusted according to actual needs, thereby achieving fine adjustment of the flow rate. When the flow rate needs to be increased, the conical sleeve can be expanded, and vice versa. In addition, as the length of the throat 402 extends, the expansion zone 5 becomes larger and can be used as needed. The length of the throat 402 and the shape and size of the expansion zone 5 can be flexibly adjusted according to actual working conditions to adapt to various complex environments. By reasonably designing the shape and stacking method of the expansion zone 5, the acoustic characteristics of the fluid flow can be effectively changed, thereby reducing the generation and propagation of noise.

[0059] like Figure 1 - Fig.13 As shown, the principle of the environmental protection dust removal equipment applied to construction provided in this embodiment is as follows:

[0060] When in use, the gas containing impurities enters through the air intake structure 2, and the airflow blows the elastic filter screen 203 to drive the connecting shaft 204 to slide. At this time, the elastic filter screen 203 is elongated, so that the filter hole in the middle of the elastic filter screen 203 becomes smaller, so that the gas filtering effect is better, and the small particles of steel slag in the gas remain on the elastic filter screen 203, preventing the small particles of steel slag from remaining on the inner wall of the inlet connecting pipe 202. When the connecting shaft 204 slides, the magnetic block 206 approaches the baffle plate 205 and the magnetic block 206. Under the action of the mutual repulsion between the two magnetic blocks 206 of the same pole and the airflow, the baffle plate 205 is blocked. The plate 205 is turned over, and the external gas enters the spray tank 1 through the connecting pipe 202. Then, the water delivery and pressurization structure 3 is started to pump water through the cooperation of the dual-axis motor 7 and the synchronous structure 9. The water delivery pipe 302 pumps water into the nozzle structure 4. When the water flows into the front half of the nozzle structure 4 under high pressure, because the inner diameters of the first expansion pipe 401 and the second expansion pipe 403 are larger than the throat 402, under the action of pressure, according to the principle of fluid dynamics, the flow rate of water will gradually increase, and finally it will be sprayed out by the expansion area 5 to achieve dust reduction of the gas;

[0061] When it is necessary to increase the spraying range and improve dust reduction, the length of the throat 402 is adjusted by the hydraulic push rod 602, and the first conical sleeve 501, the second conical sleeve 502 and the third conical sleeve 503 are adjusted by the connecting piece 404. When the length of the throat 402 is extended and the angle of the expansion zone 5 is appropriate, the flow trajectory of the water flow in the nozzle structure 4 is more stable, the deflection and fluctuation of the water flow are reduced, which helps to ensure the stability and consistency of the injection. In combination with the retractable expansion zone 5, the acoustic characteristics of the fluid flow can be effectively changed, thereby reducing The generation and propagation of noise increases the passing area of ​​the fluid, so that the flow rate can be increased as needed. At the same time, when the piston block 606 moves downward in the nozzle structure 4, it compresses the water in the nozzle structure 4, thereby increasing the pressure of the fluid and realizing double-layer pressurization with the water delivery and boosting structure 3. This increase in pressure will cause the fluid to accelerate when passing through the throat 402 in the structure 4, forming a high-speed jet flow. Due to the design characteristics of the nozzle structure 4, this acceleration effect will be further amplified in the expansion section of the nozzle structure 4, generating a stronger jet force, thereby improving the dust reduction effect.

[0062] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects.

[0063] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0064] The above description shows and describes several preferred embodiments of the present invention, but as mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. Changes and variations made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. An environmentally friendly dust removal device used in construction, comprising a spray tank (1) fixedly mounted on the upper surface of a support frame (8) and a stirring rod (10) rotatably mounted on the inner bottom wall of the spray tank (1), characterized in that: An air intake structure (2) is fixedly connected to the side wall of the spray tank (1), and a dust removal device is provided on the spray tank (1), and the dust removal device includes a water delivery and pressurization structure (3), a nozzle structure (4) and an expansion area (5); The water delivery and pressure-boosting structure (3) comprises a pump housing (301) fixedly mounted on the lower surface of a support frame (8), a gear set (304) rotatably disposed inside the pump housing (301) and meshing with each other, and a water delivery pipe (302) fixedly connected to an opposite side of the pump housing (301); The spray pipe structure (4) comprises a first expansion pipe (401) fixedly mounted on the inner top wall of the spray tank (1), a second expansion pipe (403) arranged at the bottom end of the first expansion pipe (401), and a throat pipe (402) fixedly connected between the first expansion pipe (401) and the second expansion pipe (403); the two water delivery pipes (302) are fixedly connected to the inner bottom wall of the spray tank (1) and the first expansion pipe (401) at their separated ends, respectively; and the throat pipe (402) is composed of a first contraction pipe (4021) and a second contraction pipe (4022) which are telescopically connected; The expansion zone (5) comprises a first conical sleeve (501), a second conical sleeve (502) and a third conical sleeve (503) which are slidably connected and arranged up and down, and the first conical sleeve (501) is installed at the bottom end of the second expansion tube (403) by bolts; The spray tank (1) is provided with a hydraulic pushing mechanism (6) extending into the interior of the first expansion tube (401) and pushing the throat tube (402) to expand and contract. The hydraulic pushing mechanism (6) comprises a cylinder frame (601) fixedly mounted on the top of the spray tank (1), a hydraulic push rod (602) bolted to the cylinder frame (601), a disk (603) fixedly mounted on the output end of the hydraulic push rod (602), and a vertical rod (604) and a circular rod (605) fixedly mounted on the lower surface of the disk (603). A piston block (606) is fixedly mounted at the bottom end of the circular rod (605) and is in sliding contact with the inner wall of the first expansion tube (401). A connecting piece (404) is installed between the second expansion tube (403) and the outer wall of the third conical sleeve (503), and the bottom end of the vertical rod (604) is connected to the connecting piece (404).

2. The environmental protection dust removal equipment used in construction according to claim 1 is characterized in that: The interior of the spray tank (1) is hollow, and an air duct connected to an exhaust device is fixedly connected to the upper surface of the spray tank (1).

3. The environmental protection dust removal equipment used in construction according to claim 1 is characterized in that: The air intake structure (2) comprises a feed nozzle (201) and a connecting pipe (202) which are fixedly connected, and one end of the connecting pipe (202) away from the feed nozzle (201) is fixedly connected to the spray tank (1).

4. The environmental protection dust removal equipment used in construction according to claim 3 is characterized by: The air intake structure (2) further comprises an elastic filter (203) fixedly mounted on the inner side of one end of the feed nozzle (201) away from the connecting pipe (202), and a connecting shaft (204) fixedly connected to the elastic filter (203) on the side close to the connecting pipe (202); a baffle (205) is hingedly mounted on the inner wall of the connecting pipe (202); a magnetic block (206) of like polarity that repels each other is mounted between the connecting shaft (204) and the baffle (205); and a torsion spring is arranged at the connection between the baffle (205) and the connecting pipe (202).

5. The environmental protection dust removal equipment used in construction according to claim 1 is characterized in that: The first shrinkable tube (4021) and the second shrinkable tube (4022) are slidably matched to extend the throat tube (402); the inner diameter of the throat tube (402) is smaller than the first expansion tube (401) and the second expansion tube (403); and the piston block (606) is located above the connection between the water pipe (302) and the first expansion tube (401).

6. The environmental protection dust removal equipment used in construction according to claim 5 is characterized by: The bottom end of the second shrinkable tube (4022) is fixedly connected to the second expansion tube (403), and the first shrinkable tube (4021) is fixedly connected to the first expansion tube (401). Since the throat (402) is smaller than the first expansion tube (401) and the second expansion tube (403), radial pressure is achieved when water enters the throat (402).

7. The environmental protection dust removal equipment used in construction according to claim 1 is characterized by: The first tapered sleeve (501), the second tapered sleeve (502) and the third tapered sleeve (503) are sequentially arranged from small to large, and guide blocks (504) are fixedly installed on the inner sides of the first tapered sleeve (501) and the second tapered sleeve (502), and guide grooves (505) that are slidably matched with the guide blocks (504) are provided on the outer walls of the second tapered sleeve (502) and the third tapered sleeve (503); The second conical sleeve (502) and the third conical sleeve (503) are installed in sequence by slidingly matching the guide block (504) and the guide groove (505), thereby realizing the contraction of the expansion area (5).

8. The environmental protection dust removal equipment used in construction according to claim 1 is characterized by: A pump chamber (303) is provided inside the pump housing (301), and the gear set (304) includes two gears meshing with each other. The two gears are adapted to the pump chamber (303) and are rotatably disposed in the pump chamber (303).

9. The environmental protection dust removal equipment used in construction according to claim 1 is characterized by: A double-shaft motor (7) is mounted on the lower surface of the support frame (8) via bolts, the bottom end of the stirring rod (10) extends to the outside of the spray tank (1) and is connected and fixed to one of the output shafts of the double-shaft motor (7), and a synchronization structure (9) is installed between the other output shaft of the double-shaft motor (7) and the water delivery and boosting structure (3).

10. The environmental protection dust removal equipment used in construction according to claim 9, characterized in that: The synchronous structure (9) is composed of a meshing transmission gear (901), a synchronous shaft (902), a synchronous wheel (903) and a synchronous belt (904); The transmission gear member (901) comprises a transmission gear and a driven gear, the number of the synchronization shaft (902) and the number of the synchronization wheels (903) are both two, and the two synchronization shafts (902) are respectively connected and fixed to the transmission gear and the driven gear, and the other end of the synchronization shaft (902) connected and fixed to the driven gear is connected to one of the gears of the gear set (304), the two synchronization wheels (903) are respectively fixedly mounted on the bottom synchronization shaft (902) and the output shaft of the dual-axis motor (7), and the synchronization belt (904) is transmission-connected between the two synchronization wheels (903).

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