Dust falling device for construction site

Abstract

The utility model discloses a construction site dust falling device which comprises a spraying bucket, a water inlet pipe is inserted in the upper portion of an inner cavity of the spraying bucket, and a water outlet pipe is inserted in the lower portion of the inner cavity of the spraying bucket. The water outlet pipe is connected with the spraying device through a pumping device, and the spraying device is characterized in that a filtering device for spraying water is arranged in an inner cavity of the spraying bucket and comprises a filtering shell and a filtering part arranged in an inner cavity of the filtering shell; filtering holes are formed in the surface of the filtering part, an inner cavity of the filtering part is communicated with an inner cavity of the filtering shell through the filtering holes, one end of the inner cavity of the filtering part is communicated with a water inlet pipe, and the other end is communicated with an inner cavity of the spraying bucket through a bypass valve; the utility model is used for providing the dust falling device for the construction site, and the dust falling device can play a role in settling suspended dust on the construction site.

Description

Technical Field

[0001] The utility model relates to the technical field of construction dust reduction, in particular to a spray dust reduction device used in construction sites. Background Art

[0002] Construction projects generally use open-air operations at construction sites, which often leads to serious dust pollution and a poor working environment. If affected by the climate, dust is more likely to occur, resulting in more serious dust pollution at the construction site, which has a serious impact on the traffic and environment at the construction site.

[0003] Relevant departments in my country have also formulated many preventive and control measures and standards for environmental problems on construction sites. For example, my country's "Construction Site Environment and Hygiene Standards" (JGJ146-2013) stipulates: ① The height of the fences set up around construction sites on major urban roads shall not be less than 2.5 meters, and the height of the fences set up around construction sites on general roads shall not be less than 1.8 meters; ② The fence materials should be made of hard materials such as masonry and metal plates, and should be strong, stable, clean and beautiful; ③ The fences must be set up continuously around the construction site, without gaps or individual weak points.

[0004] In engineering practice, although construction sites are built with construction fences that meet the above standards as required, the construction site cannot be completely isolated from the external environment. Therefore, the dust generated within the construction site can still float with the air to areas outside the construction site, affecting the environmental quality inside and outside the construction site.

[0005] The applicant is aware of a spray dust suppression device for construction sites (CN118594165A), comprising: a water collection channel, a power device is provided inside the water collection channel, an output end of the power device is fixedly connected to a hose; a filter box, the filter box is connected to the water collection channel through the power device, the outer surface of the filter box is fixedly connected to the collection box, the collection box is communicated with the filter box, an electric telescopic plate is provided at the connection between the filter box and the collection box, a filtering device and a vibration device are provided on the filter box; a movable plate is movably connected to the collection box, the outer surface of the movable plate is fixedly connected to the driving device, the output end of the driving device is fixedly connected to the transmission rod, the outer surface of the transmission rod is fixedly connected to the net box, a heating device is provided inside the collection box, an evaporation plate is provided on the outer surface of the heating device, an exhaust hole is provided on the collection box, and an air pipe is provided inside the exhaust hole; a water storage tank, the water storage tank is communicated with the air pipe, and the water storage tank is connected to the air pipe. The water tank is connected with the filter box through a pipeline, and a liquid conveying device is provided on the outer surface of the water storage tank, the input end of the liquid conveying device is located inside the water storage tank, and the output end of the liquid conveying device is fixedly connected to a small tube, and an electric valve is provided at the connection between the liquid conveying device and the small tube, and an opening and closing plate is provided inside the water storage tank, and an air pressure sensor and a timing device are provided on the upper surface of the opening and closing plate, and the timing device and the air pressure sensor are electrically connected to the opening and closing plate; a lifting device is movably connected to the outer surface of the collection box, and the lifting device is movably connected to the movable plate. A clamping device is provided on the collection box, and the clamping device is movably connected to the movable plate, and a receiving groove is provided on the movable plate, and the inner surface of the receiving groove is rotatably connected with a telescopic rod and a spring, and the telescopic rod is located inside the spring, and an end of the telescopic rod away from the receiving groove is fixedly connected to a block, and the block is fixedly connected to the spring, and a slot is provided on the collection box, and the block is movably connected to the inside of the slot.

[0006] However, the above application has the following problems:

[0007] The spray water inside the water collection channel passes through the filter box. If the filter structure in the filter box is blocked (not replaced in time), the load on the power unit will increase or the power unit will lose the cooling of the spray water, which may easily cause overload damage or ablation of the power unit.

[0008] At the same time, the blockage of the filter structure will also cause the entire spray dust suppression device to be unable to operate normally, affecting the construction progress. Utility Model Content

[0009] The purpose of the utility model is to provide a construction site dust reduction device, which can settle the dust particles suspended at the construction site, filter the spray water used for dust reduction, and enhance the atomization effect of the spray water. At the same time, when the filter structure is not replaced in time and becomes clogged, the utility model can stabilize the spray water level and protect the spray water pumping equipment and the spray device.

[0010] The utility model adopts the following technical solutions:

[0011] A construction site dust reduction device comprises a spray bucket, wherein the upper portion of the inner cavity of the spray bucket is connected to a water inlet pipe, and the lower portion is connected to a water outlet pipe; the outlet pipe is connected to a spray device through a pumping device; the inner cavity of the spray bucket is provided with a spray water filtering device, the filtering device comprises a filter shell communicated with the inner cavity of the spray bucket and a filter portion provided in the inner cavity of the filter shell; both ends of the filter portion are sealed and filter holes are provided on the surface of the filter portion, the inner cavity of the filter portion is connected to the inner cavity of the filter shell through the filter holes, one end of the inner cavity of the filter portion is connected to the water inlet pipe, and the other end is connected to the inner cavity of the spray bucket through a bypass valve.

[0012] Furthermore, the filtering part includes a support tube and a filter paper tube mounted on the outside of the support tube; the support tube is open at both ends, the opening at the left end of the support tube is connected to the water inlet pipe, and a bypass valve is provided at the opening at the right end; a first through hole is radially opened on the side wall of the support tube, the filter paper tube is mounted on the outside of the support tube, and the filter paper tube is circumferentially provided with filter holes of a set mesh size.

[0013] Furthermore, an annular first baffle and a second baffle are respectively provided on the left and right sides of the opening of the support tube; the inner ends of the first baffle and the second baffle are respectively coaxially connected to the support tube, and the outer ends are respectively connected to the opening of the filter paper tube.

[0014] Furthermore, the filter housing is cylindrical with both ends open, and the left end opening is coaxially fixed and sealed with the first baffle, and the right end of the filter housing is open.

[0015] Furthermore, the bypass valve includes a rubber plug and a driving mechanism arranged at the right end of the rubber plug.

[0016] Furthermore, the driving mechanism includes a support plate coaxially arranged at the opening at the right end of the filter housing, and second through holes are evenly distributed on the surface of the support plate. A sliding hole is opened at the axis of the support plate corresponding to the rubber plug, and the sliding hole is opened horizontally along the axial direction, and a connecting rod is passed through the sliding hole, and the sliding hole is connected to the connecting rod for left and right sliding; support rods are arranged on the left and right sides of the lower side of the right end surface of the support plate; the left end of the support rod fixes the support plate, and the right end is hinged to the lever, the lever is arranged up and down, the upper part of the lever slides and rotates the right end of the connecting rod; the left end of the connecting rod is coaxially fixed to the rubber plug.

[0017] Furthermore, the connecting rod is connected to the upper part of the lever through a floating rod that is radially penetrated. The floating rod is horizontally penetrated along the front and rear and fixedly connected to the right part of the connecting rod. A through groove is axially opened at the upper part of the lever corresponding to the position of the floating rod. The floating rod penetrates the through groove and is slidably and rotatably connected to the upper end of the lever.

[0018] Furthermore, the lower end of the lever is connected to a float, and the float is in the shape of a hollow sphere.

[0019] Furthermore, the circumferential side wall of the filter paper tube is provided with a plurality of folds along the axial direction.

[0020] Furthermore, the opening at the left end of the support tube is connected to the water inlet pipe through a thread.

[0021] The utility model filters out large impurities in the spray water by setting a filtering device, reduces the mass of the spray water after atomization, increases the suspension time of the spray water after atomization, and improves the dust reduction effect of the dust reduction device;

[0022] By setting up a bypass valve, it is ensured that the pumping device and the spraying device can operate normally when the filter paper cylinder of the device is blocked, thus avoiding damage to the pumping device and the spraying device due to overload or lack of cooling water of the spraying water;

[0023] By setting the float and lever, it is ensured that when the spray water level is at the lower limit position, the bypass valve can be in the open state, maintaining the water level in the spray water bucket and ensuring the normal operation of the dust suppression device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of the spray bucket in the utility model;

[0025] Figure 2 This is a schematic structural diagram of the support plate in the present utility model;

[0026] Figure 3 This is a schematic structural diagram of the water inlet pipe in the utility model;

[0027] Figure 4 This is a schematic structural diagram of the filter housing in the utility model;

[0028] Figure 5 This is a schematic structural diagram of the support tube in the present utility model;

[0029] Figure 6 It is a structural diagram of the float in the utility model.

[0030] In the figure, 1. spray bucket; 2. water inlet pipe; 3. water outlet pipe; 4. pumping device; 5. spray device; 6. filter housing; 7. filter part; 8. bypass valve; 9. support cylinder; 10. filter paper cylinder; 11. first baffle; 12. second baffle; 13. rubber plug; 14. support plate; 15. sliding hole; 16. connecting rod; 17. support rod; 18. lever; 19. through groove; 20. float; 21. floating rod; 22. thread; 23. second through hole. DETAILED DESCRIPTION

[0031] like Figures 1 to 6 As shown, the utility model describes a construction site dust reduction device, a spray bucket 1, an upper part of the inner cavity of the spray bucket 1 is connected to a water inlet pipe 2, and a lower part is connected to a water outlet pipe 3; the outlet pipe 3 is connected to a spray device 5 through a pumping device 4, and the inner cavity of the spray bucket 1 is provided with a spray water filtering device, the filtering device includes a filter shell 6 communicated with the inner cavity of the spray bucket 1 and a filter part 7 arranged in the inner cavity of the filter shell 6; both ends of the filter part 7 are sealed and filter holes are provided on the surface of the filter part 7, the inner cavity of the filter part 7 is connected with the inner cavity of the filter shell 6 through the filter holes, one end of the inner cavity of the filter part 7 is connected with the water inlet pipe 2, and the other end is connected with the inner cavity of the spray bucket 1 through a bypass valve 8.

[0032] During operation, the spray water enters the inner cavity of the filter part 7 through the water inlet pipe 2, and then enters the filter housing 6 after being filtered through the inner cavity of the filter part 7; since the filter housing 6 is connected with the inner cavity of the spray water bucket 1, the filtered spray water enters the inner cavity of the spray water bucket 1 for storage; the pumping device 4 pumps the spray water in the inner cavity of the spray water bucket 1 to the spray device 5 through the water outlet pipe 3. The spray water covers the suspended matter in the construction site under the spray of the spray device 5, thereby achieving the purpose of dust reduction at the construction site; this dust reduction device can stabilize the spray water level through the bypass valve 8 to protect the spray water pumping device 4 and the spray device 5.

[0033] In order to better achieve the atomization effect of the spray water and keep the spray water droplets suspended for a long time, thereby absorbing the suspended matter in the construction site, the spray water needs to be filtered to remove the heavier particulate impurities in the spray water during the atomization process to reduce the gravity of the spray water mist, thereby enhancing the spray water atomization effect.

[0034] In this embodiment, the filter part 7 includes a support tube 9 and a filter paper tube 10 sleeved on the outside of the support tube 9, and the support tube 9 is open at both ends; the opening at the left end of the support tube 9 is connected to the water inlet pipe 2, and the opening at the right end is provided with a bypass valve 8; a first through hole is radially opened on the side wall of the support tube 9, and the filter paper tube 10 is sleeved on the outside of the support tube 9, and the filter paper tube 10 is circumferentially provided with filter holes of a set mesh size; the spray water passes through the filter holes to retain impurities inside the filter holes.

[0035] During operation, the spray water enters the inner cavity of the support tube 9 through the water inlet pipe 2, flows to the inner side of the filter paper tube 10 through the first through hole radially opened on the side wall of the support tube 9, and enters the inner cavity of the spray water barrel 1 through the filter paper tube 10 to form spray water with less impurities.

[0036] In order to fix the filter paper cartridge 10 and allow the spray water to be filtered through the side wall of the filter paper cartridge 10 and then flow out through the inner cavity of the filter housing 6; in the present invention, an annular first baffle 11 and a second baffle 12 are respectively provided at the openings on the left and right sides of the support cylinder 9 to achieve airtightness at both ends of the filter portion 7; the inner ends of the first baffle 11 and the second baffle 12 are coaxially connected to the opening of the support cylinder 9, and the outer ends are respectively connected to the openings of the filter paper cartridge 10. Under the obstruction of the first baffle 11 and the second baffle 12, the spray water cannot flow out through the openings at both ends of the filter paper cartridge 10. Even if the spray water can only be filtered through the side wall of the filter paper cartridge 10, it can enter the inner cavity of the spray water bucket 1;

[0037] In the present invention, the filter housing 6 is cylindrical with both ends open, and the left end opening is coaxially fixed and sealed with the first baffle 11, and the right end of the filter housing 6 is open, so that the filter housing 6 is connected to the inner cavity of the spray bucket 1;

[0038] In order to prevent the spray water from flowing out through the opening at the right end of the support cylinder 9 in the filter portion 7 during normal operation; in this embodiment, the bypass valve 8 provided at the opening at the right end of the support cylinder 9 includes a rubber plug 13 and a driving mechanism provided at the right end of the rubber plug 13;

[0039] During operation, when the water volume in the inner cavity of the spray water bucket 1 is sufficient and the filter paper tube 10 can filter normally, the driving mechanism squeezes the rubber plug 13 so that the rubber plug 13 is pressed against the opening at the right end of the support tube 9. At this time, the unfiltered spray water cannot flow directly into the inner cavity of the spray water bucket 1 through the opening at the right end of the support tube 9; the spray water can only flow into the inner cavity of the spray water bucket 1 through the right end opening of the filter shell 6 after being filtered by the sleeved filter paper tube 10.

[0040] Furthermore, since the content of impurities in the spray water is difficult to control, it is difficult to master the replacement time of the filter paper cartridge 10. When the filter paper cartridge 10 cannot work properly (the filter hole is blocked), that is, the amount of water in the spray water bucket 1 is too little, the water level in the spray water bucket 1 is too low, and the water cannot enter the pumping device 4, causing the pumping device 4 to run idle. The pumping device 4 is prone to ablation due to no load and lack of cooling by the spray water, resulting in damage to the pumping device 4 and the entire dust suppression device stopping working.

[0041] In order to prevent the pumping device 4 from being empty, the driving mechanism drives the rubber plug 13 to move to the right to open the opening at the right end of the support cylinder 9. The spray water no longer passes through the failed filter paper cylinder 10, but flows directly into the inner cavity of the spray water bucket 1 to maintain the water level and avoid the pumping device 4 from being empty.

[0042] In this embodiment, the driving mechanism includes a support plate 14 coaxially arranged at the right end opening of the filter housing 6, and second through holes 23 are evenly distributed on the surface of the support plate 14; a sliding hole 15 is opened at the axis of the support plate 14 corresponding to the plug 13, and the sliding hole 15 is opened horizontally along the axial direction, and a connecting rod 16 is passed through the sliding hole 15, and the sliding hole 15 is connected to the connecting rod 16 for left and right sliding; support rods 17 are set on the left and right sides of the lower side of the right end surface of the support plate 14; the left end of the support rod 17 fixes the support plate 14, and the right end is hinged to the lever 18, the lever 18 is set up and down, the upper part of the lever 18 slides and rotates the right end of the connecting rod 16; the left end of the connecting rod 16 is coaxially fixedly connected to the plug 13.

[0043] In order to make the upper part of the lever 18 rotate around the hinge point at the right end of the support rod 17, the upper part of the lever 18 can simultaneously drive the connecting rod 16 to move left and right along the sliding hole 15; in this embodiment, the connecting rod 16 is connected to the upper part of the lever 18 by a floating rod 21 penetrated in the radial direction. The floating rod 21 penetrates the right part of the connecting rod 16 horizontally along the front and rear sides and is fixedly connected to the connecting rod 16. A strip-shaped through groove 19 is axially opened at the position of the floating rod 21 on the upper part of the lever 18. The floating rod 21 penetrates the through groove 19 and is slidably and rotatably connected to the upper end of the lever 18;

[0044] The lower end of the lever 18 is connected to the float 20. In this embodiment, the float 20 is in the shape of a hollow sphere;

[0045] During operation, when there is sufficient water in the inner cavity of the spray water bucket 1, the buoyancy generated by the spray water on the float 20 is converted into a leftward squeezing force of the rubber plug 13 through the lever 18, so that the opening at the right end of the support tube 9 is sealed; the spray water flows into the inner cavity of the spray water bucket 1 only after being filtered through the filter paper tube 10; when there is insufficient water in the inner cavity of the spray water bucket 1, the buoyancy of the float 20 is less than the gravity of the float 20, the float 20 moves downward and drives the rubber plug 13 to move to the right through the lever 18, so that the opening at the right end of the support tube 9 is opened, and the spray water no longer flows directly into the inner cavity of the spray water bucket 1 through the filter paper tube 10 to maintain the water level.

[0046] In order to increase the contact area between the spray water in the inner cavity of the support cylinder 9 and the filter paper cylinder 10, thereby improving the filtration efficiency; in the present invention, the circumferential side wall of the filter paper cylinder 10 is provided with a plurality of folds along the axial direction, so that the surface area of ​​the side wall of the filter paper cylinder 10 is increased, that is, the contact area between the side wall of the filter paper cylinder 10 and the spray water is increased;

[0047] In this embodiment, in order to facilitate direct replacement of the filter device, the opening at the left end of the support tube 9 is connected to the water inlet pipe 2 through a thread 22.

Claims

1. A construction site dust suppression device comprising a spray bucket, wherein the upper portion of the spray bucket inner cavity is connected to a water inlet pipe, and the lower portion is connected to a water outlet pipe; the water outlet pipe is connected to the spray device through a pumping device, and is characterized in that: The inner cavity of the spray water bucket is provided with a filtering device for spray water, and the filtering device includes a filter shell connected to the inner cavity of the spray water bucket and a filter part arranged in the inner cavity of the filter shell; both ends of the filter part are sealed and filter holes are provided on the surface of the filter part, the inner cavity of the filter part is connected with the inner cavity of the filter shell through the filter holes, one end of the inner cavity of the filter part is connected with the water inlet pipe, and the other end is connected with the inner cavity of the spray water bucket through a bypass valve.

2. The construction site dust suppression device according to claim 1, characterized in that: The filter part includes a support tube and a filter paper tube mounted on the outside of the support tube; the support tube is open at both ends, the opening at the left end of the support tube is connected to the water inlet pipe, and a bypass valve is provided at the opening at the right end; a first through hole is radially opened on the side wall of the support tube, the filter paper tube is mounted on the outside of the support tube, and the filter paper tube is circumferentially provided with filter holes of a set mesh size.

3. The construction site dust suppression device according to claim 2, characterized in that: The left and right sides of the support tube opening are respectively provided with an annular first baffle and a second baffle; the inner ends of the first baffle and the second baffle are respectively coaxially connected to the support tube, and the outer ends are respectively connected to the opening of the filter paper tube.

4. The construction site dust suppression device according to claim 3, characterized in that: The filter housing is cylindrical with two ends open, and the left end opening is coaxially fixed and sealed with the first baffle, and the right end of the filter housing is open.

5. The construction site dust suppression device according to claim 1, characterized in that: The bypass valve comprises a rubber plug and a driving mechanism arranged at the right end of the rubber plug.

6. The construction site dust suppression device according to claim 5, characterized in that: The driving mechanism includes a support plate coaxially arranged at the right end opening of the filter housing, and second through holes are evenly distributed on the surface of the support plate. A sliding hole is opened at the axis of the support plate corresponding to the rubber plug. The sliding hole is opened horizontally along the axial direction, and a connecting rod is passed through the sliding hole. The sliding hole is connected to the connecting rod for left and right sliding; support rods are arranged on the left and right sides of the lower side of the right end surface of the support plate; the left end of the support rod fixes the support plate, and the right end is hinged to the lever. The lever is arranged up and down, and the upper part of the lever slides and rotates the right end of the connecting rod; the left end of the connecting rod is coaxially fixed to the rubber plug.

7. The construction site dust suppression device according to claim 6, characterized in that: The connecting rod is connected to the upper part of the lever through a floating rod that is radially penetrated. The floating rod is horizontally penetrated along the front and rear right part of the connecting rod and is fixedly connected to the connecting rod. A through groove is axially opened at the position of the floating rod on the upper part of the lever corresponding to the floating rod. The floating rod penetrates the through groove and is slidably and rotatably connected to the upper end of the lever.

8. The construction site dust suppression device according to claim 7, characterized in that: The lower end of the lever is connected to a float, and the float is in a hollow spherical shape.

9. The construction site dust suppression device according to claim 3, characterized in that: The circumferential side wall of the filter paper tube is provided with a plurality of folds along the axial direction.

10. The construction site dust suppression device according to claim 2, characterized in that: The opening at the left end of the support tube is connected to the water inlet pipe through a thread.

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