Construction site dust fall spraying device

Abstract

The utility model belongs to the technical field of construction sites, and particularly relates to a construction site dust fall spraying device which comprises a bottom plate and two supports arranged at the top of the bottom plate, a fog gun machine body is rotationally arranged between the two supports, one support is provided with a rotating assembly, the fog gun machine body is composed of a first shell, a second shell and a third shell, and the first shell is provided with a dust fall opening. The first shell, the second shell and the third shell are communicated with one another, a spray head assembly is arranged in the first shell, a vent hole adjusting assembly is arranged in the second shell, a fan assembly is arranged in the third shell, and the vent hole adjusting assembly comprises four threaded holes formed in the second shell and two limiting rings arranged in the second shell. According to the device, by adjusting the area of the vent holes, the spraying distance is farther, the coverage range is wider, and therefore the dust falling effect and efficiency are greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the construction site technical field, specifically relates to a construction site dust fall spray device. BACKGROUND

[0002] In the construction process, a large amount of dust and particulate matter will be generated, which not only causes serious pollution to the environment of the construction site and affects the health of construction personnel, but also may spread to the surrounding area, bringing negative effects to the life and environmental quality of the surrounding residents.

[0003] Traditional construction site dust fall methods, such as water truck watering, manual watering, etc., can reduce dust to some extent, but have many limitations. The coverage of water truck watering is limited, and it is difficult to achieve comprehensive dust fall for large-area construction sites; manual watering is low in efficiency and high in labor intensity. In addition, these methods can only treat dust fall on the ground, and have poor effect on dust particles suspended in the air.

[0004] With the increasing environmental protection requirements and the continuous progress of construction technology, spray dust fall devices have gradually been applied in construction sites. For example, the fog cannon machine in the prior art, whose working principle is based on the adsorption and condensation principle of physics, realizes efficient and environmentally friendly dust removal effect through three steps of high-pressure atomization, fan spraying and dust removal by sedimentation.

[0005] However, the wind power and spray amount of the existing spray dust fall device are usually fixed, and it is difficult to flexibly adjust according to the complex and changeable actual conditions such as different dust concentration, area size and wind direction of the construction site. When the construction site area is large, the dust concentration is high, or the wind direction is unfavorable, etc., due to the insufficient initial set wind power, the atomized water spray distance is short, which cannot effectively cover the dust fall area, thereby affecting the dust fall effect.

[0006] Secondly, when people adjust the wind power, they usually control the kinetic energy of the fan to increase, which not only needs a lot of power, but also increases the burden of the fan, which may cause the equipment to wear out faster and shorten the service life.

[0007] Therefore, we propose a construction site dust fall spray device, which adjusts the area of the air vent to make the spray distance farther and the coverage wider, thereby greatly improving the dust fall effect and efficiency. CONTENT OF THE NEW UTILITY MODEL

[0008] The utility model aims to provide a construction site dust fall spray device, which adjusts the area of the air vent to make the spray distance farther and the coverage wider, thereby greatly improving the dust fall effect and efficiency.

[0009] The technical scheme adopted by the utility model is as follows:

[0010] The utility model provides a construction site dust spray device, including bottom plate and two supports set up in the top of bottom plate, rotate and set up mist cannon machine body between two supports, and one of the support is provided with rotating assembly, the mist cannon machine body is by first casing, second casing and third casing, first casing, second casing and third casing intercommunication, the inside of first casing is provided with spray head subassembly, the inside of second casing is provided with air hole adjusting assembly, the inside of third casing is provided with fan subassembly,

[0011] The air hole adjusting assembly includes four threaded holes in the second casing and two limit rings inside the second casing. Each threaded hole has a threaded rod. Four arc-shaped blocks are connected to the four threaded rods between the two limit rings. Each of the two arc-shaped blocks has an arc-shaped slot on the side facing each other. An arc-shaped adjusting plate is slidably arranged in each arc-shaped slot.

[0012] Further, the rotating assembly includes a step motor mounted on the support. The output end of the step motor is connected to the mist cannon machine body.

[0013] Further, the spray head assembly includes a water collecting ring pipe mounted on the first casing. The water collecting ring pipe has a plurality of atomizing nozzles. The water collecting ring pipe is connected to an external water tank through a connecting hose.

[0014] Further, a filter plate is mounted on one side of the third casing.

[0015] Further, the fan assembly includes a support frame mounted on the inner wall of the third casing. A double-shaft motor is mounted on the support frame. One output end of the double-shaft motor has a fan blade. The other output end of the double-shaft motor penetrates through the filter plate and has a foreign matter removing plate attached to one side of the filter plate.

[0016] Further, the foreign matter removing plate has a foreign matter removing brush.

[0017] Further, the arc-shaped adjusting plate is matched with the arc-shaped slot.

[0018] The utility model achieves the following technical effects:

[0019] When the dust fall operation is needed, first start the fog gun machine body. Water is delivered to the spray head assembly inside the first shell under the action of pressure, and the spray head assembly is usually provided with fine small holes or special structures. When the water passes through these structures, it will be dispersed into fine mist particles and sprayed out due to the action of pressure and small holes. At the same time, the fan assembly inside the third shell starts to run at high speed. The rotation of the fan blades produces a strong airflow, which flows from the space where the fan assembly is located to the inside of the second shell. In the initial state, the airflow blows out through the ring hole formed by the two limiting rings at a certain speed and flow rate. The airflow and the atomized water particles sprayed from the spray head assembly are sprayed outwards together, and the dust on the construction site is treated by dust fall. However, when some special conditions occur, such as the area of the construction site is large, the dust concentration is high, or the wind direction is not favorable, etc., the initial wind power is insufficient, the spraying distance of the atomized water is short, and the dust fall area cannot be effectively covered. At this time, the threaded rod is rotated by manual or electric method. Due to the thread cooperation between the threaded rod and the threaded hole, the threaded rod rotates in the threaded hole and moves axially. The movement of the threaded rod drives the arc-shaped block connected thereto to move between the two limiting rings. In the process of moving the arc-shaped block, the arc-shaped adjusting plate slides in the arc-shaped groove. With the mutual approach of the arc-shaped blocks, they gradually shrink, so that the diameter of the ring hole between the two limiting rings becomes smaller. When the diameter of the ring hole becomes smaller, the space through which the airflow passes becomes smaller, and the airflow is compressed. According to the principle of gas dynamics, under the same gas flow, the reduction of the channel cross-sectional area will cause the increase of the gas flow rate and the increase of the pressure. Therefore, the compressed airflow speed is significantly improved, the wind power is enhanced, and the enhanced wind power can more effectively wrap the atomized water particles, so that the spraying distance is farther and the coverage is wider, thereby greatly improving the effect and efficiency of dust fall. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is the overall structure schematic view of the utility model;

[0021] Figure 2 is the sectional view of the first shell, the second shell and the third shell of the utility model;

[0022] Figure 3 is the structure schematic view of the vent adjusting assembly of the utility model;

[0023] Figure 4 is the structure schematic view of the arc-shaped plate of the utility model.

[0024] In the drawings, the component list represented by each reference sign is as follows:

[0025] 1, bottom plate; 2, support; 3, fog cannon machine body; 4, first shell; 5, second shell; 6, third shell; 7, limit ring; 8, threaded rod; 9, arc block; 10, arc slot; 11, arc adjusting plate; 12, stepping motor; 13, water collecting ring pipe; 14, atomizing nozzle; 15, filter plate; 16, double-shaft motor; 17, fan blade; 18, impurity removal plate. DETAILED DESCRIPTION

[0026] In order to make the purpose and advantages of the utility model more clear and obvious, the following will specifically describe the utility model with examples. It should be understood that the following text is only used to describe one or several specific embodiments of the utility model, and does not strictly limit the protection scope of the utility model specifically requested.

[0027] As Figures 1-4 shown, the technical scheme adopted by the utility model is as follows: a building site dust spraying device, comprising a bottom plate 1 and two supports 2 arranged on the top of the bottom plate 1, a fog cannon machine body 3 is rotatably arranged between the two supports 2, and a rotating assembly is arranged on one of the two supports 2, the fog cannon machine body 3 is composed of a first shell 4, a second shell 5 and a third shell 6, the first shell 4, the second shell 5 and the third shell 6 are in communication with each other, a nozzle assembly is arranged in the first shell 4, an air vent adjusting assembly is arranged in the second shell 5, and a fan assembly is arranged in the third shell 6.

[0028] The air vent adjusting assembly comprises four threaded holes arranged on the second shell 5 and two limit rings 7 arranged in the second shell 5, each threaded hole is provided with a threaded rod 8, four arc blocks 9 connected with the four threaded rods 8 are arranged between the two limit rings 7, and each two arc blocks 9 are provided with an arc slot 10 on the side close to each other, and an arc adjusting plate 11 is slidably arranged in each two arc slots 10.

[0029] The rotating assembly comprises a stepping motor 12 arranged on the support 2, the output end of the stepping motor 12 is connected with the fog cannon machine body 3, the fog cannon machine body 3 is driven by the stepping motor 12 to adjust the angle, so as to improve the dust removal effect.

[0030] Meanwhile, the nozzle assembly comprises a water collecting ring pipe 13 arranged on the first shell 4, a plurality of atomizing nozzles 14 are arranged on the water collecting ring pipe 13, and the water collecting ring pipe 13 is connected with an external water tank through a connecting hose.

[0031] The external water enters the inside of the water collecting ring pipe 13 through the connecting hose, and then is sprayed out through the atomizing nozzle 14, so as to adsorb the dust in the air.

[0032] The third shell 6 is provided with a filter plate 15 on one side, the filter plate 15 can intercept the impurities in the entering air, so as to prevent damage to the fan assembly.

[0033] The fan assembly comprises a support frame arranged on the inner wall of the third shell 6, a double-shaft motor 16 arranged on the support frame, a fan blade 17 mounted on one output end of the double-shaft motor 16, and a foreign matter removing plate 18 mounted on the other output end of the double-shaft motor 16 and penetrating through the filter plate 15 and abutting against one side of the filter plate 15.

[0034] The double-shaft motor 16 is started to drive the fan blade 17 to rotate to generate wind force, and the other output end drives the foreign matter removing plate 18 to rotate on the filter plate 15 to remove the foreign matters on the filter plate 15, thereby preventing the filter plate 15 from being blocked and achieving the effects of saving time and labor.

[0035] The double-shaft motor 16 is a DC double-shaft motor 16, which is powered by a direct current power supply and has the characteristics of low cost, high efficiency and reliability. The shaft diameter range of the double-shaft motor 16 is 10-30 mm, the maximum torque is 0.5-5 N·m, and the maximum rotating speed is 3000-10000 rpm.

[0036] The foreign matter removing plate 18 is provided with a foreign matter removing brush to improve the effect of removing foreign matters.

[0037] The arc-shaped adjusting plate 11 is matched with the arc-shaped groove 10, so that the arc-shaped adjusting plate 11 can move in the arc-shaped groove 10 without being stuck.

[0038] The working principle of the utility model is: when the dust falling operation is needed, first start the fog gun machine body 3. Water is delivered to the spray head assembly inside the first shell 4 under the action of pressure, the spray head assembly is usually provided with fine small holes or special structure, when the water passes through these structures, due to the action of pressure and small hole, the water will be dispersed into fine mist particles and sprayed out, at the same time, the fan assembly inside the third shell 6 starts to run at high speed. The rotation of the fan blade 17 pieces produces strong airflow, the airflow flows from the space where the fan assembly is to the inside of the second shell 5, in the initial state, the airflow blows out through the ring hole formed by the two limiting rings 7 at a certain speed and flow. The airflow wraps the misted water particles sprayed from the spray head assembly and sprays outwards together, which carries out dust falling treatment on the construction site, however, when some special circumstances, such as the area of the construction site is large, the dust concentration is high or the wind direction is not favorable, etc. factors, lead to insufficient initial wind power, the misted water spraying distance is short, which cannot effectively cover the dust falling area, at this time, the threaded rod 8 is rotated by manual or electric mode. Due to the screw thread cooperation between the threaded rod 8 and the threaded hole, the threaded rod 8 will produce axial movement when rotating in the threaded hole. The movement of the threaded rod 8 drives the arc block 9 connected thereto to move between the two limiting rings 7, in the process of moving of the arc block 9, the arc-shaped adjusting plate 11 slides in the arc-shaped groove 10. With the mutual approach of the arc block 9, they gradually shrink, so that the ring hole diameter between the two limiting rings 7 becomes smaller. When the ring hole diameter becomes small, the space through which the airflow passes becomes small, and the airflow is compressed. According to the principle of gas dynamics, under the same gas flow, the reduction of the channel cross-sectional area will lead to the increase of the gas flow rate and the increase of the pressure. Therefore, the compressed airflow speed is significantly improved, the wind power is enhanced, and the enhanced wind power can more effectively wrap the misted water particles, so that the spraying distance is farther and the coverage is wider, thereby greatly improving the dust falling effect and efficiency.

[0039] The above is only the preferred embodiment of the utility model, it should be pointed out that, for those skilled in the art, without departing from the principle of the utility model, a number of improvements and refinements can be made, these improvements and refinements should also be regarded as the protection scope of the utility model. The structures, devices and operation methods not specifically described and explained in the utility model, such as no special description and limitation, are implemented according to the conventional means in the art.

Claims

1. A construction site dust spraying device, comprising a base plate (1) and two supports (2) arranged on the top of the base plate (1), a fog cannon machine body (3) is rotatably arranged between the two supports (2), and a rotating assembly is arranged on one of the supports (2), characterized in that: The fog gun machine body (3) is composed of a first shell (4), a second shell (5) and a third shell (6), the first shell (4), the second shell (5) and the third shell (6) are communicated with each other, the first shell (4) is internally provided with a nozzle assembly, the second shell (5) is internally provided with a ventilation hole adjusting assembly, and the third shell (6) is internally provided with a fan assembly; The ventilation hole adjusting assembly comprises four threaded holes formed in the second shell (5) and two limiting rings (7) arranged in the second shell (5), each threaded hole is provided with a threaded rod (8), four arc-shaped blocks (9) connected with the four threaded rods (8) are arranged between the two limiting rings (7), and each two arc-shaped blocks (9) are arranged on the side close to each other and are provided with an arc-shaped groove (10), and the arc-shaped adjusting plate (11) is slidably arranged in each two arc-shaped grooves (10).

2. A construction site dust suppression spray apparatus as claimed in claim 1, wherein: The rotating assembly comprises a stepping motor (12) arranged on the support (2), and the output end of the stepping motor (12) is connected with the fog gun machine body (3).

3. A construction site dust suppression spray apparatus as claimed in claim 1, wherein: The nozzle assembly comprises a water collecting ring pipe (13) arranged on the first shell (4), a plurality of atomizing nozzles (14) are arranged on the water collecting ring pipe (13), and the water collecting ring pipe (13) is connected with an external water tank through a connecting hose.

4. A construction site dust suppression spray apparatus as claimed in claim 1, wherein: The third shell (6) is provided with a filter plate (15) on one side.

5. A construction site dust suppression spraying apparatus as claimed in claim 4, wherein: The fan assembly comprises a support frame arranged on the inner wall of the third shell (6), a double-shaft motor (16) is arranged on the support frame, a fan blade (17) is arranged on one output end of the double-shaft motor (16), and a dedusting plate (18) is arranged on the other output end of the double-shaft motor (16) and is attached to one side of the filter plate (15).

6. A construction site dust suppression spray apparatus as claimed in claim 5, wherein: The dedusting plate (18) is provided with a dedusting brush.

7. A construction site dust suppression spraying apparatus as claimed in claim 1, wherein: The arc-shaped adjusting plate (11) is matched with the arc-shaped groove (10).

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