Dust falling equipment for building engineering construction

Abstract

The invention relates to the field of construction dust falling technologies, in particular to dust falling equipment for building engineering construction, which comprises a main suction pipe capable of sucking air with dust, a dust removal chamber communicated with the main suction pipe, and an exhaust fan communicated with the dust removal chamber to enable the dust removal chamber to have negative pressure, the top of the flow channel is detachably connected with a plurality of dust falling nozzles capable of spraying water curtains towards the inner wall of the periphery of the flow channel, the air flow direction in the flow channel is from bottom to top, the upper portion of the flow channel is communicated with a bag channel, the bag channel is internally and detachably connected with a dust removal bag capable of preventing dust impurities from passing through, and the bottom of the bag channel is communicated with an air inlet of an exhaust fan so that the dust falling effect can be improved.

Description

Technical Field

[0001] The present application relates to the field of construction dust reduction technology, and in particular to a dust reduction device for construction engineering. Background Art

[0002] A large amount of dust is easily raised during the construction process, especially in urban areas, which has a great impact on the city appearance and surrounding residents. Therefore, dust reduction treatment is required during the construction process. The general dust reduction method is spraying water mist. Although it has a certain effect, it consumes a lot of water resources, and the water mist can easily fall to the surrounding areas of the construction site and cause a certain impact. For this reason, some dust reduction technology development directions are aimed at achieving better dust reduction effects without spraying large-area water mist.

[0003] For example, a dust-proof cleaning device for an engineering project site with publication number CN119499792A sucks in air with dust, then sprays water mist on the sucked air in a chamber, and then exhausts the air.

[0004] With regard to the above-mentioned related technologies, air enters the corresponding chamber in a horizontal direction, and then water mist is sprayed downward. It is difficult to effectively and fully remove the dust carried in the air, so that when the amount of dust is large, the exhausted air is still likely to carry a certain amount of dust, resulting in limited dust reduction effect. Summary of the invention

[0005] In order to improve the dust reduction effect, the present application provides a dust reduction equipment for construction engineering.

[0006] The present application provides a dust reduction device for construction engineering construction that adopts the following technical solution.

[0007] A dust reduction device for use in construction engineering, comprising a main suction pipe capable of sucking in air containing dust, a dust removal chamber connected to the main suction pipe, and an exhaust fan connected to the dust removal chamber so as to create a negative pressure in the dust removal chamber, wherein a convection channel is provided in the dust removal chamber, and a plurality of dust reduction nozzles capable of spraying a water curtain toward the inner wall surrounding the convection channel are detachably connected to the top of the convection channel, the air flows from bottom to top in the convection channel, a bag channel is connected to the upper part of the convection channel, a dust removal bag capable of preventing dust impurities from passing through is detachably connected to the bag channel, and the bottom of the bag channel is connected to the air inlet of the exhaust fan.

[0008] By adopting the above technical solution, the dust-laden air and the water curtain sent out by the dust reduction nozzle are offset, so that most of the dust in the air can fall with the water droplets, and then the air with a small amount of dust is separated from the remaining small amount of dust through the dust removal bag, so as to achieve a better dust reduction effect, and it is not easy to cause a major impact on the surrounding area of the construction site. In addition, it can also avoid the high-frequency replacement of dust removal bags.

[0009] Optionally, a bottom channel communicating with the bottom of the convection channel is provided in the dust removal chamber. The upper part of the side of the bottom channel away from the convection channel communicates with a front channel, and the air in the front channel flows from top to bottom. The main suction pipe communicates with the upper part of the front channel. There is accumulated water in the bottom channel, and the liquid level height is lower than the upper height of the side where the bottom channel communicates with the convection channel.

[0010] By adopting the above technical solution, when the air with dust contacts the water surface in the bottom channel downward, a large part of the dust falls into the water in the bottom channel, and then the air with the remaining dust passes through the convection channel to further reduce the amount of dust separated in the subsequent dust removal bag.

[0011] Optionally, two orifice plates are detachably connected to the bottom end of the convection channel. The two orifice plates are densely provided with holes and the holes of the two orifice plates are misaligned.

[0012] By adopting the above technical solution, when the water droplets on the inner wall of the convection channel and a small part of the larger-diameter water droplets sent out by the dust-removing nozzle fall, they are blocked by the orifice plate and are not likely to splash water on the water surface of the bottom channel, so as to reduce the possibility of the dust on the water surface of the bottom channel being re-suspended.

[0013] Optionally, a water vapor channel surrounding the bottom of the convection channel and having accumulated water is provided in the dust removal chamber. A heating element for heating water to generate water vapor is detachably connected in the water vapor channel. Several bent channels are communicated between the water vapor channel and the convection channel. The turning angle of the bent channel is the lowest point of itself, and the bottom height of the opening of the bent channel at the inner wall of the convection channel is lower than the highest height of the turning angle of the bent channel.

[0014] By adopting the above technical solution, the humidity in the convection channel is relatively high, so that the dust can be fully combined with the water droplets and fall in the convection channel. At the same time, the setting of the bent channel makes the air with dust not easily enter the water vapor channel through the bent channel, reducing the situation that dust enters the water vapor channel and affects the normal operation of the heating element. And the setting of the opening height and the turning angle height of the bent channel makes it not easy for too much accumulated water to exist in the bent channel, so that the water vapor can smoothly enter the convection channel.

[0015] Optionally, an upper channel communicating with the top of the convection channel is provided in the dust removal chamber. The upper channel communicates with the upper part of the bag channel at one end away from the convection channel. A heat-conducting fluid flows in the wall thickness of the upper channel to reduce the temperature of the air entering the upper channel.

[0016] By adopting the above technical solution, the water vapor entering the upper channel is condensed to form water droplets, so as to further reduce the amount of dust in the air entering the bag channel, and also reduce the humidity of the air entering the bag channel, so that the dust accumulated in the dust removal bag is not easily caked due to the too high humidity of the passing air, so that the dust removal bag can stably perform long-term filtering work.

[0017] Optionally, the height of the bottom surface of the upper channel near the bag channel is the highest.

[0018] By adopting the above technical solution, it is possible to prevent the condensed water in the upper channel from entering the bag channel.

[0019] Optionally, a row of wall panels are fixedly connected to both the bottom surface and the top surface of the upper channel. The two rows of wall panels are arranged in a staggered manner. The air in the upper channel flows in a serpentine shape between the two rows of wall panels. The heat-conducting fluid in the wall thickness of the upper channel flows into the interior of the wall panels. A bottom plate opening for the condensed water on the inner bottom surface of the upper channel to flow through is formed through the bottom of the row of wall panels with a lower height.

[0020] By adopting the above technical solution, the air with water vapor can be fully cooled to further reduce the water vapor content in the air entering the bag channel. Moreover, the formation of the bottom plate opening makes it difficult for the condensed water to be blocked by the row of wall panels with a lower height.

[0021] Optionally, a baffle is fixedly connected to the bottom side at one end of the upper channel close to the convection channel. A lower liquid channel is communicated with the inner bottom surface of the upper channel at the side of the baffle facing the bag channel. The bottom of the lower liquid channel is communicated with the bottom channel.

[0022] By adopting the above technical solution, the condensed water with some dust is not easily allowed to fall through the convection channel, so as to reduce the formation of a part of the water vapor with dust when the relatively cold condensed water absorbs heat in the relatively hot convection channel.

[0023] Optionally, a drainage channel for discharging the water in the bottom channel is communicated with one end of the bottom channel close to the front channel. The bottom surface at one end of the bottom channel close to the drainage channel is inclined, and the height of the inclined surface of the bottom channel is lower at the position closer to the drainage channel. A water inlet pipe for sending water into the bottom channel is communicated with the other end of the bottom channel away from the drainage channel.

[0024] By adopting the above technical solution, the water with a relatively high dust content in the bottom channel can be replaced. And since the accumulation amount of larger-particle sundries and impurities on the inner bottom surface at one end of the bottom channel close to the front channel is relatively high, an inclined surface is designed in the bottom channel so that more accumulated sundries on the inclined surface can smoothly enter the drainage channel along with the water flow.

[0025] Optionally, a water-blocking plate is slidably connected to the lowest position corresponding to the inclined surface of the bottom channel. The water-blocking plate can abut against the lowest side of the inclined surface of the bottom channel. A water-blocking electric cylinder for driving the water-blocking plate to move is detachably connected in the dust removal chamber.

[0026] By adopting the above technical solution, the water in the bottom channel can be replaced periodically, and it is not necessary to keep the water in the bottom channel replaced at all times.

[0027] In summary, the present application has at least the following beneficial effects.

[0028] 1. The dusty air and the water sent out by the dust suppression nozzle are counteracted so that most of the dust in the air can fall with the water droplets, and then the air with a small part of the dust is separated from the remaining small part of the dust through the dust removal bag to achieve a better dust reduction effect; 2. When the dust-laden air touches the water surface in the bottom channel, most of the dust falls into the water in the bottom channel; 3. When the water droplets on the inner wall of the convection channel and a small part of the larger water droplets sent by the dust suppression nozzle fall, they are blocked by the orifice plate and are not easy to splash on the water surface of the bottom channel; 4. The humidity in the convection channel is high, and the water vapor entering the upper channel condenses to form water droplets, which further reduces the amount of dust in the air entering the bag channel, so that the dust can fully combine with the water droplets in the convection channel and fall. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the internal structure of the dust removal chamber after the cover plate on one side of the dust removal chamber is removed in this application; Figure 2 It is a structural schematic diagram of partial cross-section of the bottom channel, convection channel, upper channel, water vapor channel and bag channel; Figure 3 yes Figure 2 Enlarged view of point A in the middle; Figure 4 yes Figure 2 Enlarged view of point B in the middle.

[0030] Explanation of the reference numerals in the accompanying drawings: 1. Main suction pipe; 2. Dust removal chamber; 3. Exhaust fan; 31. Water-blocking electric cylinder; 4. Convection channel; 41. Water vapor channel; 42. Heating element; 43. Bend channel; 44. Orifice plate; 47. Drain channel; 48. Water inlet pipe; 49. Water-blocking plate; 5. Dust suppression nozzle; 51. Bag channel; 52. Dust removal bag; 53. Bottom channel; 54. Front channel; 55. Upper channel; 56. Wall panel; 57. Bottom of plate; 58. Baffle plate; 59. Lower liquid channel. DETAILED DESCRIPTION

[0031] The present application is further described in detail below in conjunction with the accompanying drawings.

[0032] The present application discloses a dust suppression device for construction engineering, referring to Figure 1 , including a dust removal chamber 2 placed on the ground, the upper part of a vertical side of the dust removal chamber 2 is detachably connected to the main suction pipe 1, and the bottom of the vertical side of the dust removal chamber 2 away from the main suction pipe 1 is detachably connected to the exhaust fan 3. The exhaust fan 3 makes the main suction pipe 1 a negative pressure environment, and the main suction pipe 1 can be connected to several branch pipes, each branch pipe corresponds to a construction point with a large amount of dust, and each branch pipe can also be equipped with a blower to ensure that the air pressure at the air inlet of the branch pipe is sufficient and the air with dust is smoothly transmitted from the branch pipe and the main suction pipe 1 to the dust removal chamber 2.

[0033] Reference Figure 2 A vertical front channel 54 is detachably connected in the dust removal chamber 2, the upper end of the front channel 54 is connected to the main suction pipe 1, and the bottom end of the front channel 54 is connected to a horizontal bottom channel 53. There is water in the bottom channel 53 and the water level is at 1 / 2-2 / 3 of the height of the bottom channel 53, so that the air flowing downward in the front channel 54 can send a certain amount of dust and larger impurities to the inner wall of the bottom channel 53 near one end of the front channel 54. At the same time, the end surface of the bottom channel 53 near one end of the front channel 54 is connected to a vertical drainage channel 47, and the end of the bottom channel 53 away from the front channel 54 is connected to a water inlet pipe 48 connected to an external water pump to send water into the bottom channel 53. The inner bottom surface of one end of the bottom channel 53 close to the front channel 54 is inclined, that is, the inclined surface of the bottom channel 53 is opposite to the bottom opening of the front channel 54, and the inner inclined surface of the bottom channel 53 is lowest near the side of the drainage channel 47, so that large volume debris and a large part of the deposited dust fall on the inclined surface of the bottom channel 53.

[0034] Reference Figure 2 The bottom channel 53 is slidably connected to a water blocking plate 49 that can abut against the lowest side of the slope of the bottom channel 53, so that the water in the bottom channel 53 does not enter the drain channel 47 at will. The inner wall of the dust removal chamber 2 is detachably connected to a water blocking electric cylinder 31 whose power rod is detachably connected to the upper surface of the water blocking plate 49. A turbidity meter and a liquid level sensor can also be set in the bottom channel 53 and combined with an external controller to achieve that when the water dust concentration in the bottom channel 53 is high, the water blocking electric cylinder 31 is operated to move the water blocking plate 49 upward, and at the same time, the water inlet pipe 48 is sent into the bottom channel 53 to timely replace the accumulated water in the bottom channel 53. In addition, the drain channel 47 is connected to an external sediment pump to send water with more impurities and debris into the corresponding sedimentation tank or cyclone for separation.

[0035] Reference Figure 2 and Figure 3 The bottom channel 53 is connected to a vertical convection channel 4 at one end away from the front channel 54. Several dust suppression nozzles 5 are detachably connected to the convection channel 4. The dust suppression nozzles 5 are connected to an external high-pressure water pump to spray a water curtain to the inner wall around the upper part of the convection channel 4. At least two orifice plates 44 are detachably connected to the inner wall at the bottom of the convection channel 4. The two orifice plates 44 are densely covered with holes, and the holes of the two orifice plates 44 are staggered, so that the water droplets with larger particle sizes falling in the convection channel 4 are not easy to splash large water on the water surface in the bottom channel 53, so as to minimize the dust on the water surface of the bottom channel 53 from being raised again.

[0036] Reference Figure 2 and Figure 4, a water vapor channel 41 is detachably connected around the outer side of the bottom of the flow channel 4 inside the dust removal chamber 2. The water vapor channel 41 is connected to an external water pump to store a certain amount of water. A heating element 42 that can be an electric heater is detachably connected inside the water vapor channel 41, so that the water in the water vapor channel 41 is heated to generate water vapor. There are several bent channels 43 communicating between the water vapor channel 41 and the flow channel 4, so that the water vapor enters the flow channel 4, greatly increasing the humidity inside the flow channel 4 and reducing the amount of dust sent out through the flow channel 4. The bent channel 43 has a corner, and the corner is the highest point of the bent channel 43, so that the water droplets flowing down along the inner wall of the flow channel 4 are not easily introduced into the bent channel 43. Moreover, the bottom height of the opening of the bent channel 43 at the inner wall of the flow channel 4 is lower than the highest height of the corner of the bent channel 43, so that the accumulated water in the bent channel 43 will not completely block the bent channel 43, enabling the water vapor to smoothly enter the flow channel 4 through the bent channel 43.

[0037] Refer to Figure 2 , a horizontal upper channel 55 is connected to the upper part of the flow channel 4. The opening of the upper channel 55 connected to the flow channel 4 is higher than the height of the dust-removing nozzle 5, so that the air passing through the water curtain can enter the upper channel 55. A row of wall plates 56 are fixedly connected to both the inner bottom surface and the top surface of the upper channel 55. The wall plates 56 and the wall thickness of the upper channel 55 are both hollow and connected to an external water pump, so that an external heat exchanger can send a heat-conducting fluid such as water into the wall plates 56 and the wall thickness of the upper channel 55. And the two rows of wall plates 56 are arranged in a staggered manner, and the bottom height of the wall plate 56 with a higher height is lower than the upper height of the wall plate 56 with a lower height, so that the air with a small amount of dust and more water vapor flows in a snake-like shape in the upper channel 55, enabling the water vapor to condense in the upper channel 55, further reducing the amount of dust in the air and preventing the humidity of the air passing through the upper channel 55 from being too high. Moreover, the outside of the upper channel 55 can also be wrapped with heat-insulating materials such as polyurethane foam.

[0038] Refer to Figure 2 , the inner bottom surface of the upper channel 55 is inclined, and the height of the inclined surface is the lowest on the side close to the flow channel 4. A bottom opening 57 is penetrated and opened at the bottom of the row of wall plates 56 with a lower height, so that the condensed water in the upper channel 55 can flow to the lower side of the upper channel 55 through the bottom opening 57. A baffle plate 58 is fixedly connected to the inner bottom surface of the opening of the upper channel 55 close to the flow channel 4, so that the condensed water in the upper channel 55 cannot enter the flow channel 4. A lower liquid channel 59 is opened at the position between the baffle plate 58 and the wall plate 56 on the inner bottom surface of the upper channel 55. The bottom end of the lower liquid channel 59 is connected to the bottom channel 53, so that the condensed water will not enter the relatively higher-temperature flow channel 4, thereby reducing the situation where the condensed water evaporates again on the surface to form a part of the water vapor with dust. A perforated plate 44 is also provided at the bottom of the lower liquid channel 59 to prevent the water droplets falling from the lower liquid channel 59 from splashing water on the water surface of the bottom channel 53 and causing more dust to rise.

[0039] Refer toFigure 2 , a vertical pocket channel 51 is connected to one end of the upper channel 55 away from the runner channel 4. Several dust removal bags 52 are detachably connected in the upper middle part of the pocket channel 51, so that even if the air entering the pocket channel 51 still carries a very small amount of dust, it cannot pass through the dust removal bags 52. An air extractor 3 with an air inlet connected to the bottom of the pocket channel 51 is detachably connected in the dust removal chamber 2. The air extractor 3 is connected to the outside of the dust removal chamber 2 to discharge the air that has undergone dust reduction treatment.

[0040] The implementation principle of a dust reduction device for construction engineering construction in an embodiment of the present application is as follows: The air with dust enters the front channel 54 through the main suction pipe 1. The air in the front channel 54 flows downward, so that part of the dust and larger particles of sundries will enter the water in the front channel 54. Then the dusty air enters the runner channel 4 with a higher humidity. Most of the dust combines with water vapor and is blocked when it is flushed against the water curtain sprayed by the dust reduction nozzle 5. Then the air with a small amount of dust and more water vapor enters the upper channel 55. The condensation of the water vapor further reduces the dust. Then the air is filtered by the dust removal bags 52 and then discharged into the external environment through the air extractor 3.

[0041] The above are all preferred embodiments of the present application. The protection scope of the present application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A dust reduction device for construction engineering construction, comprising a main suction pipe (1) capable of sucking air with dust, a dust removal chamber (2) connected to the main suction pipe (1), and a suction fan (3) connected to the dust removal chamber (2) to make the inside of the dust removal chamber (2) in a negative pressure state, characterized in that: Inside the dust removal chamber (2), there is a convection channel (4). At the top of the convection channel (4), several dust-removing spray nozzles (5) that can spray a water curtain towards the inner wall around the convection channel (4) are detachably connected. The air flow direction in the convection channel (4) is from bottom to top. The upper part of the convection channel (4) is connected to a bag channel (51). Inside the bag channel (51), a dust-removing bag (52) that can prevent dust and impurities from passing through is detachably connected. The bottom of the bag channel (51) is connected to the air inlet of the exhaust fan (3).

2. The dust reduction device for construction engineering construction according to claim 1, characterized in that: Inside the dust removal chamber (2), there is a bottom channel (53) connected to the bottom of the convection channel (4). The upper part of the side of the bottom channel (53) far from the convection channel (4) is connected to a front channel (54). The air in the front channel (54) flows from top to bottom. The main suction pipe (1) is connected to the upper part of the front channel (54). There is accumulated water in the bottom channel (53), and the liquid level height is lower than the upper height of the side where the bottom channel (53) is connected to the convection channel (4).

3. The dust reduction device for construction engineering construction according to claim 2, characterized in that: At the bottom end of the convection channel (4), two orifice plates (44) are detachably connected. The two orifice plates (44) are densely provided with holes and the holes of the two orifice plates (44) are misaligned.

4. The dust reduction device for construction engineering construction according to claim 2, characterized in that: Inside the dust removal chamber (2), there is a water vapor channel (41) surrounding the bottom of the convection channel (4) and having accumulated water. Inside the water vapor channel (41), a heating element (42) for heating water to generate water vapor is detachably connected. Several bent channels (43) are connected between the water vapor channel (41) and the convection channel (4). The turning angle of the bent channel (43) is the lowest point of itself. The bottom height of the opening of the bent channel (43) at the inner wall of the convection channel (4) is lower than the highest height of the turning angle of the bent channel (43).

5. The dust suppression device for construction engineering construction according to claim 2, characterized in that: Inside the dust removal chamber (2), there is an upper channel (55) connected to the top of the convection channel (4). One end of the upper channel (55) far from the convection channel (4) is connected to the upper part of the bag channel (51). A heat-conducting fluid flows in the wall thickness of the upper channel (55) to reduce the temperature of the air entering the upper channel (55).

6. The dust reduction device for construction engineering construction according to claim 5, characterized in that: The height of the bottom surface of the upper channel (55) near the side of the bag channel (51) is the highest.

7. The dust reduction device for construction engineering construction according to claim 6, characterized in that: On both the bottom surface and the top surface of the upper channel (55), a row of wall plates (56) are fixedly connected. The two rows of wall plates (56) are arranged in a staggered manner. The air in the upper channel (55) flows in a serpentine shape between the two rows of wall plates (56). The inside of the wall plates (56) is for the heat-conducting fluid in the wall thickness of the upper channel (55) to flow into. At the bottom of the row of wall plates (56) with a lower height, a bottom plate opening (57) through which the condensed water on the inner bottom surface of the upper channel (55) flows is penetrated and opened.

8. The dust reduction device for construction engineering construction according to claim 6, characterized in that: At the bottom side of one end of the upper channel (55) close to the convection channel (4), a baffle plate (58) is fixedly connected. At the side of the inner bottom surface of the upper channel (55) towards the bag channel (51) of the baffle plate (58), a lower liquid channel (59) is connected. The bottom of the lower liquid channel (59) is connected to the bottom channel (53).

9. A dust reduction device for construction engineering construction according to claim 2, characterized in that: At one end of the bottom channel (53) close to the front channel (54), a drain channel (47) for discharging the water in the bottom channel (53) is connected. The bottom surface of the bottom channel (53) at one end close to the drain channel (47) is inclined, and the height of the inclined surface of the bottom channel (53) is lower at the position closer to the drain channel (47). One end of the bottom channel (53) far from the drain channel (47) is connected to a water inlet pipe (48) for sending water flow into the bottom channel (53).

10. A dust reduction device for construction engineering construction according to claim 9, characterized in that: A water blocking plate (49) is slidably connected to the lowest point of the inclined surface of the bottom channel (53). The water blocking plate (49) can abut against the lowest side of the inclined surface of the bottom channel (53). A water blocking electric cylinder (31) for driving the water blocking plate (49) to move is detachably connected in the dust removal chamber (2).

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