Construction dust falling device and dust falling method

Abstract

The invention belongs to the technical field of building construction, and discloses a construction dust falling device which comprises a shell and further comprises a protective cover and a middle shaft which are fixedly connected to the top of the shell and the interior of a cavity correspondingly, a spray head assembly is arranged in the shell, and a conveying pipe assembly for conveying water into the spray head assembly is arranged at the bottom of the shell; a direction adjusting mechanism capable of reversely adjusting the spraying direction of the spray head assembly along with the wind direction is installed on the protective cover. According to the scheme, a water source is guided into the spray head body through the conveying pipe assembly and sprayed outwards from the end of the spray head body, so that when the device encounters airflow, the blades can deflect with the spherical part of the sleeve rod as the axis, for example, when the spray head assembly deflects with the middle shaft as the axis, the flow baffles can abut against the corresponding supporting arc plates and make the supporting arc plates deflect, and the airflow is sprayed outwards from the end of the spray head body. And at the moment, the nozzle body can spray a farther distance to resist airflow, so that the effective contact time of water mist and dust is prolonged.

Description

Technical Field

[0001] This invention belongs to the field of building construction technology, specifically a construction dust suppression device and method. Background Technology

[0002] During urban construction, construction activities typically generate a large amount of dust. If left uncontrolled, this dust can easily spread to surrounding areas, negatively impacting air quality and residents' health. Therefore, effective dust suppression measures must be implemented at construction sites.

[0003] During building or road construction, enclosed barriers are typically erected around the construction area, with water sprinklers installed on top. While some dust particles interact with the water mist and settle as they reach the edge of the barriers, thus mitigating dust escape and reducing pollution to the external environment, the water mist generated by the sprinklers is susceptible to wind influence. For example, when the wind moves from the construction site towards the outside of the barriers, the water mist and dust are simultaneously carried away and blown outwards, significantly reducing the effective contact time and efficiency between the water mist and dust, thus resulting in a marked decrease in dust suppression.

[0004] Therefore, in order to solve the above problems, a construction dust suppression device and method are proposed. Summary of the Invention

[0005] To address the problems mentioned in the background section, this invention provides a construction dust suppression device and method, which solves the problem that the dust suppression efficiency is reduced due to the influence of airflow when water spray nozzles are installed on the top of enclosed enclosures.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a construction dust suppression device, comprising a housing, and further comprising: a protective cover and an intermediate shaft respectively fixed to the top of the housing and the cavity, a nozzle assembly is provided inside the housing, and a water delivery pipe assembly for supplying water to the nozzle assembly is provided at the bottom of the housing, and a direction adjustment mechanism that can adjust the spraying direction of the nozzle assembly according to the wind direction is installed on the protective cover. The nozzle assembly includes a nozzle body sleeved on the outer periphery of the intermediate shaft, on which a set of elastic support members with a tendency to move in opposite directions and supported on the outer periphery of the intermediate shaft are arranged symmetrically. A spring telescopic rod is hinged to both sides of the nozzle body, and the other end is hinged to the inner wall of the outer shell. The direction adjustment mechanism includes a sleeve rod connected to the protective cover by a ball shaft, on which a hemispherical spring piston rod with a rubber bottom end is sleeved. The top of the sleeve rod extends above the protective cover and is equipped with blades. Several spring telescopic rods are hinged at equal angles to the outer periphery of the sleeve rod, and the top of the spring telescopic rods are hinged to the protective cover. The spring piston rod has a downward trend and its bottom end can contact the upper surface of the nozzle body. The nozzle body is equipped with a pressure regulating component for reducing the nozzle body opening when spraying against the wind.

[0007] Preferably, a hexagonal prism is fixedly connected to the spring piston rod, and the top of the hexagonal prism extends upward into the sleeve rod and is clearance-fitted with it.

[0008] Preferably, the delivery pipe assembly includes a main pipe fixedly installed at the bottom of the housing, a spring core rod movably sleeved inside the main pipe, a corrugated pipe fixedly connected to the middle of the main pipe, and the top end of the corrugated pipe connected to the nozzle body cavity; initially, the outer periphery of the spring core rod can block the connection between the main pipe and the corrugated pipe.

[0009] Preferably, a pressure chamber is formed between the outer periphery of the rod body portion of the spring piston rod and the cavity of the sleeve rod; One end of the main pipe is fixedly connected to the secondary pipe, and the other end of the secondary pipe can extend to the protective cover and be connected to the pressure chamber. The portion of the main pipe cavity located between the spring core rod and the secondary pipe stores hydraulic oil. An oil storage assembly is installed at the top of the protective cover cavity. After the hydraulic oil enters the pressure chamber and lifts the spring piston rod, it will descend to reset and allow the hydraulic oil inside to be temporarily stored in the oil storage assembly.

[0010] Preferably, the oil storage assembly includes an oil storage tank fixedly installed on the top of the protective cover cavity, the bottom of the oil storage tank is connected to the auxiliary pipe, a one-way valve flap with downward unidirectional flow is provided in the middle of the oil storage tank, a micro-hole is opened in the middle of the one-way valve flap, a spring-loaded piston combination located below the one-way valve flap and having a downward trend is movably installed in the oil storage tank, and a constant pressure hole located above the one-way valve flap is opened on the outer periphery of the oil storage tank; The sleeve rod is hollow in the middle, and the cavity above the spring piston rod of the sleeve rod can be connected to the outside.

[0011] Preferably, a hollow column is fixed to the top of the spring-loaded piston assembly, and several vertical through slots are arranged in a ring array on the hollow column. The upward movement of the hollow column can push the one-way valve disc to open upward. Initially, there is a gap between the top of the hollow column and the one-way valve disc.

[0012] Preferably, the pressure regulating assembly includes baffles symmetrically rotatably connected to the output end of the nozzle body. The shaft portion of the baffle can extend to the bottom of the nozzle body and is fixedly connected to a sector gear. The sector gears on the two baffles mesh with each other. A spring sheet for supporting the sector gear is fixedly connected to the bottom of the housing. A set of supporting arc plates is fixedly connected to the inner wall of the end of the housing. The near ends of the two supporting arc plates can abut against the outer side of the corresponding baffle. A semi-circular stop is also fixed to the bottom of the outer shell cavity, which can force the sector gear to rotate when the nozzle body moves outward.

[0013] Preferably, a set of elastic scrapers are fixedly connected to both sides of the nozzle body in a symmetrical direction. The elastic scrapers are movably connected to the housing, and the other side of the elastic scraper is a brush that can contact the side wall of the housing cavity.

[0014] A dust suppression method using a construction dust suppression device, the method being as follows: The outer casing is installed on top of the enclosure. Water is introduced into the nozzle body through the delivery pipe assembly and sprayed outward from the end of the nozzle body. When encountering airflow, the airflow causes the blades to deflect around the spherical part of the sleeve rod as the axis. At this time, the sleeve rod will drive the spring piston rod to deflect as well. The hemispherical part at the bottom of the spring piston rod will drive the nozzle body to move in the opposite direction of the blade deflection. When the nozzle body nozzle is facing against the wind, the pressure regulating component will reduce the opening of the nozzle body. At this time, the nozzle body can spray a longer distance to increase the effective contact time between water mist and dust.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: The above solution introduces water into the nozzle body through the delivery pipe assembly and sprays it outward from the end of the nozzle body. When the device encounters airflow, the blades will deflect around the spherical part of the sleeve rod as the axis. The sleeve rod will drive the spring piston rod to deflect, and the hemispherical part at the bottom of the spring piston rod will drive the nozzle body to move in the opposite direction of the blade deflection. For example, when the nozzle assembly deflects around the central axis, the baffle will abut against the corresponding support arc plate and deflect it, thereby reducing the opening of the nozzle body. At this time, the nozzle body can spray a longer distance to counteract the airflow, thereby increasing the effective contact time between the water mist and the dust. The above scheme works by first moving the bellows when water is pumped into the main pipeline. The hydraulic oil stored at one end of the main pipeline is then pumped into the pressure chamber of the sleeve rod through the auxiliary pipeline. This causes the spring piston rod to move upward and briefly disengage its bottom end from the top of the nozzle body. At this time, it remains vertical under the support of several spring telescopic rods. The nozzle body is also quickly reset to its initial state under the support of the spring telescopic rod and the elastic support. Subsequently, the hydraulic oil in the pressure chamber is temporarily stored in the oil storage assembly. At the same time, the spring piston rod is reset downward by its own elastic force and contacts the top of the nozzle body. This allows the device to perform a calibration operation on the direction adjustment mechanism each time water is pumped in. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a side cross-sectional view of the outer casing and protective cover of the present invention; Figure 3 This is a top cross-sectional view of the outer casing of the present invention; Figure 4 This is a schematic diagram of the direction adjustment mechanism of the present invention; Figure 5 This is a front cross-sectional view of the present invention; Figure 6 for Figure 5 Enlarged view of point A in the middle; Figure 7 This is a top plan perspective view of the voltage regulating component of the present invention; Figure 8 This is a bottom view of the nozzle body of the present invention.

[0017] In the diagram: 1. Outer shell; 11. Protective cover; 12. Intermediate shaft; 2. Nozzle assembly; 21. Nozzle body; 211. Elastic scraper; 22. Elastic support; 23. Spring telescopic rod one; 3. Delivery pipe assembly; 31. Main pipe; 311. Secondary pipe; 32. Spring core rod; 33. Bellows; 4. Direction adjustment mechanism; 41. Sleeve rod; 42. Spring piston rod; 43. Blade; 44. Spring telescopic rod two; 5. Oil storage assembly; 51. Oil storage tank; 52. Spring combination piston; 521. Hollow column; 522. Vertical through groove; 53. One-way valve disc; 54. Constant pressure orifice; 6. Pressure regulating assembly; 61. Baffle plate; 62. Support arc plate; 63. Sector gear; 631. Semi-circular stop; 64. Spring. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] like Figures 1 to 8 As shown, the present invention provides a construction dust suppression device, including a housing 1, and further including: a protective cover 11 and an intermediate shaft 12 respectively fixed to the top of the housing 1 and the cavity, a nozzle assembly 2 is provided inside the housing 1, a conveying pipe assembly 3 for conveying water into the nozzle assembly 2 is provided at the bottom of the housing 1, and a direction adjustment mechanism 4 that can adjust the spraying direction of the nozzle assembly 2 according to the wind direction is installed on the protective cover 11. The nozzle assembly 2 includes a nozzle body 21 sleeved on the outer periphery of the intermediate shaft 12. A set of elastic support members 22 with a tendency to move in opposite directions and supported on the outer periphery of the intermediate shaft 12 are symmetrically arranged on the nozzle body 21. Spring telescopic rods 23 are hinged on both sides of the nozzle body 21, and the other end is hinged to the inner wall of the outer shell 1. The direction adjustment mechanism 4 includes a sleeve rod 41 connected to the protective cover 11 by a ball shaft, on which a hemispherical spring piston rod 42 with a rubber bottom end is sleeved. The top of the sleeve rod 41 extends above the protective cover 11 and is equipped with a blade 43. Several spring telescopic rods 44 are hinged at equal angles on the outer periphery of the sleeve rod 41, and the top of the spring telescopic rods 44 are hinged to the protective cover 11. The spring piston rod 42 has a downward trend, and its bottom end can contact the upper surface of the nozzle body 21. A hexagonal prism is fixed in the spring piston rod 42, and the top of the hexagonal prism extends upward into the sleeve rod 41 and is clearance-fitted with it. The nozzle body 21 is provided with a pressure regulating component 6 for reducing the opening of the nozzle body 21 when spraying against the wind; the pressure regulating component 6 includes a baffle plate 61 symmetrically rotatably connected to the output end of the nozzle body 21, the shaft part of the baffle plate 61 can extend to the bottom of the nozzle body 21 and is fixedly connected to a sector gear 63, the sector gears 63 on the two baffle plates 61 mesh with each other, the bottom of the outer shell 1 is fixedly connected to a spring piece 64 for supporting the sector gear 63, and the inner wall of the end of the outer shell 1 is fixedly connected to a set of supporting arc plates 62, the near ends of the two supporting arc plates 62 can abut against the outer side of the corresponding baffle plate 61; A semi-circular stop 631 is also fixed to the bottom of the outer shell 1 cavity, which can force the sector gear 63 to rotate when the nozzle body 21 moves outward. A set of elastic scrapers 211 are fixedly attached to both sides of the nozzle body 21 in a symmetrical direction. The elastic scrapers 211 are movably connected to the housing 1, and the other side of the elastic scraper 211 is a brush that can contact the side wall of the housing 1 cavity.

[0020] Using the above scheme, water is introduced into the nozzle body 21 through the delivery pipe assembly 3 and sprayed outward from the end of the nozzle body 21. When the device encounters airflow, the blade 43 will deflect around the spherical part of the sleeve rod 41 as the axis. The sleeve rod 41 will drive the spring piston rod 42 to deflect. The hemispherical part at the bottom of the spring piston rod 42 will drive the nozzle body 21 to move in the opposite direction of the deflection direction of the blade 43. For example, when the nozzle assembly 2 deflects around the intermediate shaft 12 as the axis, the baffle 61 will abut against the corresponding support arc plate 62 and deflect it, thereby reducing the opening of the nozzle body 21. At this time, the nozzle body 21 can spray a longer distance to resist the airflow, thereby increasing the effective contact time between the water mist and the dust. It should be noted that when the nozzle body 2 moves backward, the nozzle of the nozzle body 2 is in the downwind direction, and at this time (the size of the nozzle of the nozzle body 2 does not need to be adjusted).

[0021] like Figure 2 and Figures 4-6 As shown, the delivery pipe assembly 3 includes a main pipe 31 fixedly installed at the bottom of the outer casing 1. A spring core rod 32 is movably sleeved inside the main pipe 31. A corrugated pipe 33 is fixedly connected to the middle of the main pipe 31. The top end of the corrugated pipe 33 is connected to the cavity of the nozzle body 21. Initially, the outer periphery of the spring core rod 32 can block the connection between the main pipe 31 and the corrugated pipe 33. The outer periphery of the rod body of the spring piston rod 42 and the cavity of the sleeve rod 41 form a pressure chamber; One end of the main pipe 31 is fixedly connected to the secondary pipe 311, and the other end of the secondary pipe 311 can extend to the protective cover 11 and be connected to the pressure chamber. The part of the main pipe 31 cavity located between the spring core rod 32 and the secondary pipe 311 stores hydraulic oil. An oil storage component 5 is installed on the top of the cavity of the protective cover 11. After the hydraulic oil enters the pressure chamber and lifts the spring piston rod 42, it will descend to reset and allow the hydraulic oil inside to be temporarily stored in the oil storage component 5. The oil storage assembly 5 includes an oil storage tank 51 fixedly installed on the top of the cavity of the protective cover 11. The bottom of the oil storage tank 51 is connected to the secondary pipe 311. A one-way valve 53 with downward unidirectional flow is provided in the middle of the oil storage tank 51. A microhole is opened in the middle of the one-way valve 53. A spring combination piston 52 located below the one-way valve 53 and with a downward trend is movably installed in the oil storage tank 51. A constant pressure hole 54 located above the one-way valve 53 is opened on the outer periphery of the oil storage tank 51. The middle part of the sleeve rod 41 is hollow, and the cavity of the sleeve rod 41 located above the spring piston rod 42 can communicate with the outside. Using the above scheme, when water is pumped into the main pipe 31, the bellows 33 is moved first. The hydraulic oil stored in one end of the main pipe 31 is input into the pressure chamber of the sleeve rod 41 through the secondary pipe 311, which causes the spring piston rod 42 to move upward and its bottom end to briefly disengage from the top of the nozzle body 21. At this time, it will remain vertical under the support of several spring telescopic rods 44, and the nozzle body 21 will also be quickly reset to the initial state under the support of the spring telescopic rod 23 and the elastic support 22. Then the hydraulic oil entering the pressure chamber will be input into the oil storage component 5 for temporary storage. At the same time, the spring piston rod 42 will also be reset downward by its own elastic force and contact the top of the nozzle body 21, so that the device can perform a calibration operation on the direction adjustment mechanism 4 every time water is pumped in. It is worth noting that when the oil in the secondary pipe 311 is rapidly pumped into the pressure chamber, the combined effect of the micro-holes on the one-way valve disc 53 and the spring force on the spring combination piston 52 restricts the spring combination piston 52 from moving upward quickly. This allows the hydraulic oil to quickly enter the pressure chamber and lift the spring piston rod 42. Subsequently, under the action of the spring piston rod 42, the hydraulic oil in the pressure chamber can slowly lift the spring combination piston 52 and store it in the oil reservoir 51.

[0022] like Figure 6 As shown, a hollow column 521 is fixed to the top of the spring-loaded piston 52. Several vertical through slots 522 are arranged in a ring on the hollow column 521. The upward movement of the hollow column 521 can push the one-way valve 53 to open upward. Initially, there is a gap between the top of the hollow column 521 and the one-way valve 53. Using the above scheme, when the hydraulic oil enters the pressure chamber through the secondary pipe 311, it also enters the oil storage tank 51 and pushes the spring combination piston 52 upward slowly. During this process, the hollow column 521 remains below the one-way valve 53. When the spring piston rod 42 returns to its original position after reaching the top, it transfers the hydraulic oil from the pressure chamber to the oil storage tank 51. The spring combination piston 52 then slowly pushes the hollow column 521 upward and through the one-way valve 53. At this time, the upper and lower parts of the oil storage tank 51 are connected through the vertical through groove 522. Therefore, when the spring piston rod 42 is affected by the airflow and deflects, its movement is not affected by the spring combination piston 52 and the one-way valve 53.

[0023] Working principle and usage process of this invention: In use, the outer casing 1 is installed on the top of the enclosure. Water is introduced into the nozzle body 21 through the delivery pipe assembly 3 and sprayed outward through the end of the nozzle body 21. When encountering airflow, the airflow will cause the blade 43 to deflect around the spherical part of the sleeve rod 41. At this time, the sleeve rod 41 will drive the spring piston rod 42 to deflect as well. The hemispherical part at the bottom of the spring piston rod 42 will drive the nozzle body 21 to move in the opposite direction of the deflection of the blade 43. For example, when the nozzle assembly 2 deflects around the intermediate shaft 12, the baffle 61 will abut against the corresponding support arc plate 62 and deflect it, thereby reducing the opening of the nozzle body 21. At this time, the nozzle body 21 can spray a longer distance to increase the effective contact time between the water mist and the dust. When water is introduced into the main pipe 31, the water will first push the bellows 33 to move. At this time, the hydraulic oil stored in one end of the main pipe 31 will be introduced into the pressure chamber of the sleeve rod 41 through the secondary pipe 311, thereby causing the spring piston rod 42 to move upward. At this time, the bottom of the spring piston rod 42 will briefly disengage from the top of the nozzle body 21. At this time, it will remain vertical under the support of several spring telescopic rods 44. The nozzle body 21 will also be quickly reset to the initial state under the support of the spring telescopic rods 23 and the elastic support member 22. Then, the hydraulic oil entering the pressure chamber will be introduced into the oil storage component 5 for temporary storage. At the same time, the spring piston rod 42 will also be reset downward by its own elastic force and contact the top of the nozzle body 21. When the oil in the secondary pipe 311 is rapidly pumped into the pressure chamber, the spring combination piston 52 is restricted from moving upward rapidly due to the micro-holes on the one-way valve disc 53 and the elastic force of the spring part on the spring combination piston 52. This allows the hydraulic oil to quickly enter the pressure chamber and lift the spring piston rod 42. Subsequently, under the action of the elastic force of the spring piston rod 42, the hydraulic oil in the pressure chamber can slowly lift the spring combination piston 52 and store it in the oil storage tank 51.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A construction dust suppression device, comprising a housing (1), characterized in that, Also includes: A protective cover (11) and an intermediate shaft (12) are respectively fixed to the top of the outer shell (1) and the cavity. A nozzle assembly (2) is provided inside the outer shell (1). A conveying pipe assembly (3) for conveying water into the nozzle assembly (2) is provided at the bottom of the outer shell (1). A direction adjustment mechanism (4) that can adjust the spraying direction of the nozzle assembly (2) in the opposite direction of the wind is installed on the protective cover (11). The nozzle assembly (2) includes a nozzle body (21) sleeved on the outer periphery of the intermediate shaft (12), on which a set of elastic support members (22) with a tendency to move in opposite directions and supported on the outer periphery of the intermediate shaft (12) are arranged symmetrically. Both sides of the nozzle body (21) are hinged with a spring telescopic rod (23), and the other end is hinged to the inner wall of the outer shell (1). The direction adjustment mechanism (4) includes a sleeve rod (41) connected to the protective cover (11) by a ball shaft, on which a hemispherical spring piston rod (42) with a rubber bottom end is sleeved. The top of the sleeve rod (41) extends above the protective cover (11) and is equipped with a blade (43). Several spring telescopic rods (44) are hinged at equal angles on the outer periphery of the sleeve rod (41), and the top of the spring telescopic rods (44) is hinged to the protective cover (11). The spring piston rod (42) has a downward trend, and its bottom end can contact the upper surface of the nozzle body (21). The nozzle body (21) is provided with a pressure regulating component (6) for reducing the opening of the nozzle body (21) when spraying against the wind.

2. The construction dust suppression device according to claim 1, characterized in that: A hexagonal prism is fixedly connected to the spring piston rod (42), and the top of the hexagonal prism extends upward into the sleeve rod (41) and is fitted with it with a clearance.

3. The construction dust suppression device according to claim 1, characterized in that: The delivery pipe assembly (3) includes a main pipe (31) fixedly installed at the bottom of the outer shell (1), a spring core rod (32) is movably sleeved inside the main pipe (31), a corrugated pipe (33) is fixedly connected to the middle of the main pipe (31), and the top end of the corrugated pipe (33) is connected to the cavity of the nozzle body (21). Initially, the outer periphery of the spring core rod (32) can block the connection between the main pipe (31) and the bellows (33).

4. The construction dust suppression device according to claim 3, characterized in that: The outer periphery of the rod body of the spring piston rod (42) and the cavity of the sleeve rod (41) form a pressure chamber; One end of the main pipe (31) is fixedly connected to the secondary pipe (311), and the other end of the secondary pipe (311) can extend to the protective cover (11) and be connected to the pressure chamber. The part of the main pipe (31) cavity located between the spring core rod (32) and the secondary pipe (311) stores hydraulic oil. The top of the protective cover (11) cavity is equipped with an oil storage component (5). After the hydraulic oil enters the pressure chamber and lifts the spring piston rod (42), it will descend to reset and allow the hydraulic oil inside to be temporarily stored in the oil storage component (5).

5. The construction dust suppression device according to claim 4, characterized in that: The oil storage assembly (5) includes an oil storage tank (51) fixedly installed on the top of the cavity of the protective cover (11). The bottom of the oil storage tank (51) is connected to the secondary pipe (311). A one-way valve (53) with downward unidirectional flow is provided in the middle of the oil storage tank (51). A microhole is opened in the middle of the one-way valve (53). A spring combination piston (52) located below the one-way valve (53) and with a downward trend is movably installed in the oil storage tank (51). A constant pressure hole (54) located above the one-way valve (53) is opened on the outer periphery of the oil storage tank (51). The sleeve rod (41) is hollow in the middle, and the cavity of the sleeve rod (41) above the spring piston rod (42) can be connected to the outside.

6. The construction dust suppression device according to claim 5, characterized in that: The top end of the spring-loaded piston (52) is fixed with a hollow column (521), and the hollow column (521) has several vertical through slots (522) arranged in a ring array. The upward movement of the hollow column (521) can push the one-way valve (53) to open upward. Initially, there is a gap between the top of the hollow column (521) and the one-way valve disc (53).

7. The construction dust suppression device according to claim 1, characterized in that: The pressure regulating assembly (6) includes a baffle plate (61) symmetrically rotatably connected to the output end of the nozzle body (21). The shaft portion of the baffle plate (61) can extend to the bottom of the nozzle body (21) and is fixedly connected to a sector gear (63). The sector gears (63) on the two baffle plates (61) mesh with each other. The bottom of the outer shell (1) is fixedly connected to a spring piece (64) for supporting the sector gear (63). The inner wall of the end of the outer shell (1) is fixedly connected to a set of supporting arc plates (62). The near ends of the two supporting arc plates (62) can abut against the outer side of the corresponding baffle plate (61). The bottom of the outer shell (1) is also fixed with a semi-circular stop (631), which can force the sector gear (63) to rotate when the nozzle body (21) moves outward.

8. The construction dust suppression device according to claim 1, characterized in that: A set of elastic scrapers (211) are fixedly attached to both sides of the nozzle body (21) in a symmetrical direction. The elastic scrapers (211) are movably connected inside the outer shell (1), and the other side of the elastic scraper (211) is a brush that can contact the side wall of the cavity of the outer shell (1).

9. A dust suppression method using a construction dust suppression device, comprising the construction dust suppression device as described in claim 1, characterized in that, The dust suppression methods are as follows: The outer casing (1) is installed on the top of the enclosure. Water is introduced into the nozzle body (21) through the delivery pipe assembly (3) and sprayed outward through the end of the nozzle body (21). When encountering airflow, the airflow will cause the blade (43) to deflect around the spherical part of the sleeve rod (41). At this time, the sleeve rod (41) will drive the spring piston rod (42) to deflect as well. The hemispherical part at the bottom of the spring piston rod (42) will drive the nozzle body (21) to move in the opposite direction of the deflection direction of the blade (43). When the nozzle of the nozzle body (21) faces the wind, the pressure regulating assembly (6) will reduce the opening of the nozzle body (21). At this time, the nozzle body (21) can spray a farther distance to increase the effective contact time between the water mist and the dust.

Images