A dust removal device for environmental protection engineering construction site

Abstract

The present invention provides a dust removal device for an environmental protection engineering construction site, which belongs to the technical field of dust removal equipment. The device comprises a main feed pipe and a PLC control system. The main feed pipe is provided with a dust concentration sensor. A first airbag inside the main feed pipe is limited inside the first airbag assembly by a threaded connection. The rear end of the main feed pipe is connected to a spray box assembly. A water inlet pipe assembly is provided at the top of the main feed pipe. A booster pump is provided on the water inlet pipe assembly. A liquid level sensor is provided at the front of the spray box assembly. A first exhaust pipe is provided at the back of the spray box assembly. A second exhaust pipe is provided on the side of the spray box assembly away from the main feed pipe. A compression chamber is provided at the top of the spray box assembly. A second airbag is provided in the compression chamber. The second airbag is limited inside the compression chamber by a threaded connection. The present invention matches the corresponding spray pressure and spray volume according to the concentration of the dust content, thereby ensuring that the dust is effectively removed and that the dust removal water is not excessively used.

Description

Technical Field

[0001] The invention belongs to the technical field of dust removal equipment, and in particular relates to a dust removal device for an environmental protection engineering construction site. Background Art

[0002] Air dust removal is a crucial environmental protection measure, primarily purifying the air and protecting the atmospheric environment. Dust removal devices can reduce dust concentration in the air, making the air we breathe fresher and reducing the incidence of disease. Furthermore, dust removal prevents dust and particulate matter from entering machinery, thereby improving industrial production efficiency and extending the lifespan of machinery. Therefore, dust removal devices are widely used in environmental protection construction sites. Dust or dust is typically blown into a dedicated exhaust gas collection pipe via a positive pressure blower, where it is then treated and discharged back into the air, meeting environmental protection requirements.

[0003] After searching, patent document CN117959858B discloses a construction site spraying dust removal device and its operation method, including an outer shell, a base is provided at the bottom of the outer shell, the bottom end of the outer shell is fixedly mounted on the base, a window is provided on the side wall of the outer shell, a spray assembly is rotatably mounted in the window, a top cover is fixedly mounted on the top end of the outer shell, and a fixed cylinder is installed through the top center of the top cover. The patent can adjust the direction of the spray assembly according to demand, so that the spray assembly can spray water to clean the surface of the equipment inside the outer shell or spray the space outside the outer shell to remove dust. Windows are provided on the four walls of the outer shell, which means that a spray assembly can be installed in each window. In this way, a large range of spraying and dust removal can be carried out simultaneously on all sides of the outer shell, greatly improving the efficiency of dust removal.

[0004] The above patent document adopts a spraying method to treat dust, but in actual application scenarios, the dust content changes dynamically, and the dust concentration may fluctuate greatly during the construction process due to factors such as the type of operation, weather conditions, and construction stage. Traditional dust removal devices often adopt a fixed capacity design and cannot flexibly adjust the processing capacity. In addition, when facing high-concentration dust, the existing spray mechanism is prone to uneven spraying or insufficient contact between the spray droplets and the dust, resulting in poor dust removal effect; at the same time, the existing dust removal device is complicated to operate and often involves complex electrical control systems, which increases the difficulty of operation and poses certain safety hazards. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a dust removal device for environmental protection engineering construction sites, which effectively solves the problem in the existing technology that the dust content is dynamically changing and the dust concentration may fluctuate greatly during the construction process due to factors such as the type of operation, weather conditions, and construction stage. Traditional dust removal devices often adopt a fixed capacity design and cannot flexibly adjust the processing capacity. In addition, when facing high-concentration dust, the existing spray mechanism is prone to uneven spraying or insufficient contact between the spray droplets and the dust, resulting in poor dust removal effect. At the same time, the existing dust removal devices are complicated to operate and often involve complex electrical control systems, which increases the difficulty of operation and poses certain safety hazards.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: A dust removal device for an environmental protection engineering construction site, comprising a main feed pipe and a PLC control system, wherein a dust concentration sensor is provided on the main feed pipe, a first airbag assembly is provided inside the main feed pipe, a first airbag of the first airbag assembly is limited inside the first airbag assembly by a threaded connection, the rear end of the main feed pipe is connected to the spray box assembly, the bottom of the spray box assembly is connected to a slag discharge assembly, a water inlet pipe assembly is provided at the top of the main feed pipe, a booster pump is provided on the water inlet pipe assembly, a liquid level sensor connected to the spray box assembly is provided at the front, a first exhaust pipe connected to the spray box assembly is provided at the back, a second exhaust pipe is provided on the side of the spray box assembly away from the main feed pipe, a compression chamber connected to the main feed pipe is provided at the top of the spray box assembly, a second airbag is provided in the compression chamber, and the second airbag is limited inside the compression chamber by a threaded connection.

[0007] Preferably, the main feed pipe includes a first main feed pipe, a first reducing joint and a second main feed pipe connected in sequence, the inner diameter of the second main feed pipe is larger than the inner diameter of the first main feed pipe, the first main feed pipe is provided with a first solenoid valve and a first one-way valve, the second main feed pipe is provided with a first airbag air inlet pipe connected thereto, and the first airbag air inlet pipe is provided with a first stop valve.

[0008] Preferably, the first airbag assembly also includes an airbag fixing plate, an airbag limiting ring, an airbag baffle and a first quick-plug flexible connecting tube; the airbag fixing plate and the airbag limiting ring are fixedly connected to the inner wall of the second main feed pipe, and the first airbag is installed by a screw that passes through the airbag fixing plate, the first airbag and the airbag baffle in sequence. One end of the first quick-plug flexible connecting tube is connected to the first airbag assembly, and the other end is connected to the first airbag air inlet pipe.

[0009] Preferably, the airbag fixing plate includes an outer connecting ring, a plurality of ribs and an inner connecting ring, one end of the rib is connected to the outer connecting ring, and the other end is connected to the inner connecting ring, a first through hole is provided in the center of the inner connecting ring, and a connecting port is formed between each adjacent rib.

[0010] Preferably, the spray box assembly also includes a spray box body and a drain pipe, the spray box body is a hollow structure, the drain pipe is connected to the spray box body, a second solenoid valve is provided on the drain pipe, the slag discharge assembly includes a second reducer and a holding pipe, one end of the second reducer is connected to the holding pipe, and the other end is connected to the spray box body, and the holding pipe is provided with a second stop valve.

[0011] Preferably, the water inlet pipe assembly also includes a water inlet pipe and several spray heads, the water inlet pipe is connected to an external water tank, the water inlet pipe extends into the interior of the spray box and is connected to the spray head; a second one-way valve is provided on the first exhaust pipe, and a third solenoid valve, a pressure sensor and a third one-way valve are provided on the second exhaust pipe.

[0012] Preferably, the compression chamber also includes a compression chamber cylinder, a third reducing joint, a second airbag air inlet pipe, a second airbag exhaust pipe, a compression chamber top cover, an airbag fixing cylinder and an airbag pressure cover. One end of the third reducing joint is connected to the spray box body, and the other end is connected to the compression chamber cylinder. The second airbag air inlet pipe and the second airbag exhaust pipe are both connected to the compression chamber cylinder. The airbag fixing cylinder is located outside the second airbag, and the installation of the second airbag is achieved by a screw that passes through the airbag fixing cylinder, the second airbag and the airbag pressure cover in sequence. The compression chamber top cover is located on the top of the compression chamber cylinder and is connected to it.

[0013] Preferably, a compression chamber connecting block is provided at the inner top of the compression chamber cylinder, a sealing groove is provided on the compression chamber connecting block, a lower pressure plate is connected to the outer top of the compression chamber cylinder, and a threaded hole is provided on the lower pressure plate; a third stop valve is provided on the second airbag inlet pipe, a fourth stop valve is provided on the second airbag exhaust pipe, a second airbag is provided with a second quick-plug flexible connecting tube and a third quick-plug flexible connecting tube, a strip groove is provided on the outer periphery of the airbag fixing cylinder, the compression chamber top cover includes a cover plate and a handle, the handle is located at the top of the cover plate and is fixedly connected to it, a sealing boss is provided at the bottom of the cover plate, the outer periphery of the cover plate is connected to the upper pressure plate, and a second through hole is provided on the upper pressure plate.

[0014] Preferably, a dryer is further included, and an inlet of the dryer is communicated with both the first exhaust pipe and the second exhaust pipe.

[0015] The present invention also provides a method for using a dust removal device at an environmental protection engineering construction site, the method comprising a normal dust removal method S1 and an accelerated dust removal method S2;

[0016] The normal dust removal method S1 includes the following steps:

[0017] S11, when the dust concentration of the dust-laden exhaust gas does not reach the set value of the dust concentration sensor, the first airbag and the second airbag are both in a fully inflated state, the first solenoid valve is in an open state, and the dust-laden exhaust gas enters the spray box through the main feed pipe;

[0018] S12, the dust removal water is pressurized by the booster pump to the spray head, and the dust-laden exhaust gas in step S11 is sprayed with the water sprayed by the spray head to remove the dust particles in the dust-laden exhaust gas;

[0019] S13, as the dust-laden exhaust gas continues to flow in, the pressure of the spray-treated gas in the spray box will rise and enter the dryer through the first exhaust pipe;

[0020] The accelerated dust removal method S1 includes the following steps:

[0021] S21, when the dust concentration of the dust-laden exhaust gas reaches the set value of the dust concentration sensor, the dust concentration sensor feeds back a signal to the PLC control system, increasing the power of the booster pump, and increasing the spray pressure and spray volume of the sprinkler head;

[0022] S22, simultaneously opening the first stop valve and the fourth stop valve, exhausting the first and second airbags outward, increasing the flow area of the second main feed pipe, reducing the air pressure in the spray box, and accelerating the speed at which the dust-laden exhaust gas enters the main feed pipe;

[0023] S23, when the first airbag is exhausted, a stop valve is closed; when the second airbag is exhausted, a fourth stop valve is closed and a third solenoid valve is opened;

[0024] S24, when the air pressure in the spray box reaches the preset value of the pressure sensor, the pressure sensor feeds back a signal to the PLC control system, closing the first solenoid valve;

[0025] S25, dust-laden exhaust gas is continuously sprayed in the spray box;

[0026] S26, after a preset time, the first stop valve is opened to inflate the first airbag, and the third stop valve is opened to inflate the second airbag. The pressure of the sprayed gas in the spray box increases and the gas is discharged simultaneously through the first exhaust pipe and the second exhaust pipe.

[0027] S27, when the gas in the spray box cannot be discharged in step S26, stop the operation of the booster pump, and open the vent valve on the top of the compression chamber cover to release the gas, and close the vent valve after the venting is completed.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] (1) The present invention provides a dust removal device for an environmental protection engineering construction site. The device comprises a main feed pipe, a first air bag assembly, a spray box assembly, a slag discharge assembly, a water inlet pipe assembly, a first exhaust pipe, a second exhaust pipe, a compression chamber, a dryer and a PLC control system. The device has two modes: normal dust removal and accelerated dust removal. The device improves the processing capacity of the device and the dust removal rate, thereby ensuring the cleanliness of the exhaust air.

[0030] (2) The present invention provides a dust removal device for environmental protection engineering construction sites. According to the concentration of dust in the exhaust gas, a booster pump matches the corresponding spray pressure and spray volume, which not only ensures that the dust is effectively removed, but also ensures that the dust removal water is not excessively used, thus saving water resources.

[0031] (3) The present invention provides a dust removal device for an environmental protection engineering construction site. When the dust concentration is high and the accelerated dust removal mode is adopted, the dust-containing waste gas can be quickly sucked into the spray box through the emptying of the first airbag and the second airbag. Subsequently, the first airbag and the second airbag are filled, and the treated waste gas in the spray box can be quickly discharged, thereby achieving the results of "fast charging" and "fast discharge".

[0032] (4) The present invention provides a dust removal device for environmental protection engineering construction sites, which has a compact structure, is easy to operate, and is simple to repair and maintain. Most of the operations are intelligent, and the operator only needs to complete the basic operations of inflating and deflating the airbag, thereby reducing the skill requirements for the operator and reducing the safety hazards caused by complex electrical devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0034] Figure 2 Schematic diagram of the connection between the first airbag assembly and the second main feed pipe of the present invention;

[0035] Figure 3 It is a schematic structural diagram of the airbag fixing plate of the present invention;

[0036] Figure 4 It is a schematic diagram of the internal structure of the spray box of the present invention;

[0037] Figure 5 This invention Figure 4 A top view of

[0038] Figure 6 Schematic diagram of the appearance of the compression chamber of the present invention;

[0039] Figure 7 Schematic diagram of the internal structure of the compression chamber of the present invention;

[0040] Figure 8 It is a structural schematic diagram of the compression chamber cylinder of the present invention;

[0041] Figure 9 It is a structural schematic diagram of the compression chamber top cover of the present invention;

[0042] Figure 10 It is a schematic structural diagram of the second airbag of the present invention when it is fixed.

[0043] In the figure: 100, main feed pipe; 101, dust concentration sensor; 110, first main feed pipe; 111, first solenoid valve; 112, first one-way valve; 120, first reducer; 130, second main feed pipe; 140, first airbag inlet pipe; 141, first stop valve; 200, first airbag assembly; 210, first airbag; 220, airbag fixing plate; 221, outer connecting ring; 222, rib plate; 223, inner connecting ring Ring; 224, first through hole; 225, connecting port; 230, airbag limiting ring; 240, airbag baffle; 250, first quick-connect flexible connector; 300, spray box assembly; 310, spray box body; 320, liquid level sensor; 330, drain pipe; 331, second solenoid valve; 400, slag discharge assembly; 410, second reducer; 420, holding pipe; 421, second stop valve; 500, water inlet pipe assembly; 510, water inlet pipe ; 520, booster pump; 530, sprinkler head; 600, first exhaust pipe; 601, second one-way valve; 700, second exhaust pipe; 701, third solenoid valve; 702, pressure sensor; 703, third one-way valve; 800, compression chamber; 810, compression chamber cylinder; 811, compression chamber connecting block; 812, sealing groove; 813, lower pressure plate; 814, threaded hole; 820, third reducer; 830, second airbag intake Tube; 831, third stop valve; 840, second airbag exhaust pipe; 841, fourth stop valve; 850 compression chamber top cover; 851, cover plate; 852, handle; 853, upper pressure plate; 854, sealing boss; 855, second through hole; 860, second airbag; 861, second quick-connect flexible connection tube; 862, third quick-connect flexible connection tube; 870, airbag fixing tube; 871, strip groove; 880, airbag pressure cover; 900, dryer. DETAILED DESCRIPTION

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0045] It should be pointed out that the terms "upper", "lower", "left", "right", "top", "bottom", "inside", "outside" and the like indicating directions or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the present invention.

[0046] It should be understood that, in the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense.

[0047] Example 1: See attached Figures 1 to 10 The embodiment 1 provides a dust removal device for an environmental protection engineering construction site, comprising a main feed pipe 100 and a PLC control system. The main feed pipe 100 is provided with a dust concentration sensor 101. The main feed pipe 100 is provided with a first airbag assembly 200. The first airbag 210 of the first airbag assembly 200 is limited inside the first airbag assembly 200 by a threaded connection. The rear end of the main feed pipe 100 is connected to the spray box assembly 300. The bottom of the spray box assembly 300 is connected to the slag discharge assembly 400. The top of the main feed pipe 100 is provided with a feed The water pipe assembly 500 is provided with a booster pump 520 on the water inlet pipe assembly 500, the front of the spray box assembly 300 is provided with a liquid level sensor 320 connected thereto, the back of the spray box assembly 300 is provided with a first exhaust pipe 600 connected thereto, the side of the spray box assembly 300 away from the main feed pipe 100 is provided with a second exhaust pipe 700, the top of the spray box assembly 300 is provided with a compression chamber 800 connected thereto, and a second air bag 860 is provided in the compression chamber 800, and the second air bag 860 is limited inside the compression chamber 800 by a threaded connection.

[0048] The main feed pipe 100 includes a first main feed pipe 110, a first reducing joint 120 and a second main feed pipe 130 connected in sequence. The inner diameter of the second main feed pipe 130 is larger than the inner diameter of the first main feed pipe 110. The first main feed pipe 110 is provided with a first solenoid valve 111 and a first one-way valve 112. The first solenoid valve 111 is located at the rear end of the dust concentration sensor 101, and the first one-way valve 112 is located at the rear end of the first solenoid valve 111. The second main feed pipe 130 is provided with a first airbag intake pipe 140 connected thereto, and the first airbag intake pipe 140 is provided with a first stop valve 141.

[0049] The first airbag assembly 200 also includes an airbag fixing plate 220, an airbag limiting ring 230, an airbag baffle 240 and a first quick-plug flexible connecting tube 250; the airbag fixing plate 220 and the airbag limiting ring 230 are both fixedly connected to the inner wall of the second main feed pipe 130, and the first airbag 210 is installed by a screw that passes through the airbag fixing plate 220, the first airbag 210 and the airbag baffle 240 in sequence. The first airbag 210 is an annular cylinder in the inflated state. One end of the first quick-plug flexible connecting tube 250 is connected to the first airbag assembly 200, and the other end is connected to the first airbag air inlet pipe 140.

[0050] The airbag fixing plate 220 includes an outer connecting ring 221, several ribs 222 and an inner connecting ring 223. One end of the rib 222 is connected to the outer connecting ring 221, and the other end is connected to the inner connecting ring 223. A first through hole 224 is provided in the center of the inner connecting ring 223. A connecting port 225 is formed between each adjacent rib 222, and the flow of dust-containing exhaust gas is facilitated through the connecting port 225. The structure of the airbag baffle 240 is similar to that of the airbag fixing plate 220.

[0051] The spray box assembly 300 also includes a spray box body 310 and a drain pipe 330. The spray box body 310 is a hollow structure, and the drain pipe 330 is connected to the spray box body 310. Usually, a support frame (not shown in the figure) is connected to the outer wall of the spray box body 310 to support the entire device.

[0052] A second solenoid valve 331 is provided on the drain pipe 330, and the drain pipe 330 is located at the bottom of the second exhaust pipe 700. The slag discharge assembly 400 includes a second reducer 410 and a holding pipe 420. One end of the second reducer 410 is connected to the holding pipe 420, and the other end is connected to the spray box 310. The holding pipe 420 is provided with a second stop valve 421, and the inner diameter of the holding pipe 420 is smaller than the inner diameter of the spray box 310.

[0053] The water inlet pipe assembly 500 further includes a water inlet pipe 510 and a plurality of spray heads 530 . The water inlet pipe 510 is connected to an external water tank. The water inlet pipe 510 extends into the interior of the spray box 310 and is connected to the spray heads 530 .

[0054] The first exhaust pipe 600 and the second exhaust pipe 700 are at the same height. A second one-way valve 601 is provided on the first exhaust pipe 600, and a third solenoid valve 701, a pressure sensor 702 and a third one-way valve 703 are provided on the second exhaust pipe 700. The pressure sensor 702 is located at the rear end of the third solenoid valve 701, and the third one-way valve 703 is located at the rear end of the pressure sensor 702.

[0055] The compression chamber 800 also includes a compression chamber cylinder 810, a third reducing joint 820, a second airbag air inlet pipe 830, a second airbag exhaust pipe 840, a compression chamber top cover 850, an airbag fixing cylinder 870 and an airbag pressure cover 880. One end of the third reducing joint 820 is connected to the spray box 310, and the other end is connected to the compression chamber cylinder 810. The inner diameter of the compression chamber cylinder 810 is larger than the inner diameter of the spray box 310. The second airbag air inlet pipe 830 and the second airbag exhaust pipe 840 are both connected to the compression chamber cylinder 810. The airbag fixing cylinder 870 is located on the outside of the second airbag 860. The second airbag 860 is installed by a screw that passes through the airbag fixing cylinder 870, the second airbag 860 and the airbag pressure cover 880 in sequence. The second airbag 860 is an annular cylinder in the inflated state. The compression chamber top cover 850 is located on the top of the compression chamber cylinder 810 and is connected to it.

[0056] The inner top of the compression chamber cylinder 810 is provided with a compression chamber connecting block 811, and a sealing groove 812 is provided on the compression chamber connecting block 811. The outer top of the compression chamber cylinder 810 is connected to a lower pressure plate 813, and a threaded hole 814 is provided on the lower pressure plate 813; the second air bag air inlet pipe 830 is provided with a third stop valve 831, and the second air bag exhaust pipe 840 is provided with a fourth stop valve 841. The second air bag 860 is provided with a second quick-plug soft connecting pipe 861 and a third quick-plug soft connecting pipe 862. The second quick-plug soft connecting pipe 861 is connected to the second air bag air inlet pipe 830, and the third quick-plug soft connecting pipe 862 is connected to the second air bag exhaust pipe 8 40 is connected, a strip groove 871 is provided on the outer periphery of the airbag fixing cylinder 870, and a connecting port 225 is provided at the bottom of the airbag fixing cylinder 870. The compression chamber top cover 850 includes a cover plate 851 and a handle 852. The handle 852 is located on the top of the cover plate 851 and is fixedly connected thereto. A sealing boss 854 is provided at the bottom of the cover plate 851, and the sealing boss 854 is engaged with the sealing groove 812. The outer periphery of the cover plate 851 is connected to an upper pressure plate 853, and a second through hole 855 is provided on the upper pressure plate 853. In addition, a vent valve (not shown in the figure) is also provided on the top of the compression chamber top cover 850, and the gas in the spray box 310 can be vented through the vent valve.

[0057] The device further includes a dryer 900 , the inlet of which is in communication with both the first exhaust pipe 600 and the second exhaust pipe 700 .

[0058] The present invention also provides a method for using a dust removal device at an environmental protection engineering construction site, the method comprising a normal dust removal method S1 and an accelerated dust removal method S2;

[0059] The normal dust removal method S1 includes the following steps:

[0060] S11, when the dust concentration of the dust-laden exhaust gas does not reach the set value of the dust concentration sensor 101, the first airbag 210 and the second airbag 860 are both in a fully inflated state, the first solenoid valve 111 is in an open state, and the dust-laden exhaust gas enters the spray box 310 through the main feed pipe 100;

[0061] S12, the dust removal water is pressurized by the booster pump 520 to the spray head 530, and the dust-laden exhaust gas in step S11 is sprayed. The water sprayed by the spray head 530 removes the dust particles in the dust-laden exhaust gas, and the dust particles fall into the slag discharge assembly 400 along with the water;

[0062] S13, as the dust-laden exhaust gas continues to flow in, the pressure of the spray-treated gas in the spray box 310 increases, and the gas enters the dryer 900 through the first exhaust pipe 600 and is discharged after drying;

[0063] The accelerated dust removal method S1 includes the following steps:

[0064] S21, when the dust concentration of the dust-laden exhaust gas reaches the set value of the dust concentration sensor 101, the dust concentration sensor 101 feeds back a signal to the PLC control system, increasing the power of the booster pump 520 and increasing the spraying pressure and spraying volume of the spray head 530;

[0065] S22, the first stop valve 141 and the fourth stop valve 841 are opened simultaneously, the first airbag 210 and the second airbag 860 are exhausted outward, the first airbag 210 and the second airbag 860 are contracted, the flow area of the second main feed pipe 130 is increased, the air pressure in the spray box 310 is reduced, the speed at which the dust-laden exhaust gas enters the main feed pipe 100 is accelerated, and the gas in the spray box 310 cannot flow out;

[0066] S23, when the first airbag 210 is exhausted, the first stop valve 141 is closed; when the second airbag 860 is exhausted, the fourth stop valve 841 is closed and the third solenoid valve 701 is opened, and the pressure value in the spray box is monitored by the pressure sensor 702;

[0067] S24, when the air pressure in the spray box 310 reaches the preset value of the pressure sensor 702, the pressure sensor 702 feeds back a signal to the PLC control system, closing the first solenoid valve 111, and the dust-laden exhaust gas cannot enter the main feed pipe 100;

[0068] S25, the dust-laden exhaust gas is continuously sprayed in the spray box 310, and the dust particles fall into the slag discharge assembly 400 along with the water;

[0069] S26: After a preset time, the first stop valve 141 is opened to inflate the first airbag 210 to an initial set value, and the third stop valve 831 is opened to inflate the second airbag 860 to an initial set value. The pressure of the sprayed gas in the spray box 310 increases, and the gas is discharged simultaneously through the first exhaust pipe 600 and the second exhaust pipe 700, and then discharged after drying in the dryer 900.

[0070] S27, when the gas in the spray box 310 cannot be discharged in step S26, stop the operation of the booster pump 520, and open the vent valve on the top of the compression chamber top cover 850 to release the gas, and close the vent valve after the venting is completed.

[0071] It is not difficult to understand that when the water level in the area formed by the spray box 310 and the slag discharge assembly 400 reaches the high value set by the liquid level sensor 320, the liquid level sensor 320 will feed back a signal to the PLC control system, open the second solenoid valve 331, and discharge the water through the drain pipe 330. When the water level drops to the low value set by the liquid level sensor 320, the liquid level sensor 320 will feed back a signal to the PLC control system, close the second solenoid valve 331, and usually the low value of the liquid level sensor 320 is set above the liquid level of the drain pipe 330, so the gas in the spray box 310 cannot be discharged directly from the drain pipe 330.

[0072] An observation window (not shown) is usually provided on the periphery of the spray box 310. The observation window is located at the bottom of the liquid level sensor 320. The degree of sludge deposition formed by dust particles in the slag discharge component 400 can be observed through the observation window, so as to facilitate regular cleaning of the sludge in the slag discharge component 400.

[0073] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A dust removal device for an environmental protection engineering construction site, comprising a main feed pipe (100) and a PLC control system, characterized in that: The main feed pipe (100) is provided with a dust concentration sensor (101), the interior of the main feed pipe (100) is provided with a first airbag assembly (200), the first airbag (210) of the first airbag assembly (200) is limited inside the first airbag assembly (200) through a threaded connection, the rear end of the main feed pipe (100) is connected to the spray box assembly (300), the bottom of the spray box assembly (300) is connected to the slag discharge assembly (400), the top of the main feed pipe (100) is provided with a water inlet pipe assembly (500), and the water inlet pipe assembly (500) is provided with an increasing pressure. a pressure pump (520), a liquid level sensor (320) in communication with the spray box assembly (300) is provided on the front of the spray box assembly (300), a first exhaust pipe (600) in communication with the spray box assembly (300) is provided on the back of the spray box assembly (300), a second exhaust pipe (700) is provided on a side of the spray box assembly (300) away from the main feed pipe (100), a compression chamber (800) in communication with the spray box assembly (300) is provided on the top of the spray box assembly (300), a second air bag (860) is provided in the compression chamber (800), and the second air bag (860) is limited inside the compression chamber (800) through a threaded connection; The first airbag assembly (200) further includes an airbag fixing plate (220), an airbag limiting ring (230), an airbag baffle (240) and a first quick-insert flexible connecting tube (250); the airbag fixing plate (220) and the airbag limiting ring (230) are both fixedly connected to the inner wall of the second main feed pipe (130) of the main feed pipe (100); the first airbag (210) is installed by a screw that sequentially penetrates the airbag fixing plate (220), the first airbag (210) and the airbag baffle (240); one end of the first quick-insert flexible connecting tube (250) is connected to the first airbag assembly (200), and the other end is connected to the first airbag air inlet pipe (140) of the main feed pipe (100); The compression chamber (800) further comprises a compression chamber cylinder (810), a third reducing joint (820), a second airbag inlet pipe (830), a second airbag exhaust pipe (840), a compression chamber top cover (850), an airbag fixing cylinder (870) and an airbag pressure cover (880), wherein one end of the third reducing joint (820) is connected to the spray box (310) of the spray box assembly (300), and the other end is connected to the compression chamber cylinder (810), and the second airbag inlet pipe (830) is connected to the second airbag exhaust pipe (840). The tube (830) and the second airbag exhaust tube (840) are both connected to the compression chamber cylinder (810), the airbag fixing cylinder (870) is located outside the second airbag (860), and the second airbag (860) is installed by a screw that passes through the airbag fixing cylinder (870), the second airbag (860) and the airbag pressure cover (880) in sequence, and the compression chamber top cover (850) is located on the top of the compression chamber cylinder (810) and is connected to it.

2. The dust removal device for environmental protection engineering construction site according to claim 1 is characterized in that: The main feed pipe (100) comprises a first main feed pipe (110), a first reducing joint (120), and a second main feed pipe (130) connected in sequence, wherein the inner diameter of the second main feed pipe (130) is larger than the inner diameter of the first main feed pipe (110), the first main feed pipe (110) is provided with a first solenoid valve (111) and a first one-way valve (112), the second main feed pipe (130) is provided with a first airbag intake pipe (140) in communication therewith, and the first airbag intake pipe (140) is provided with a first stop valve (141).

3. The dust removal device for environmental protection engineering construction site according to claim 2 is characterized in that: The airbag fixing plate (220) comprises an outer connecting ring (221), a plurality of ribs (222) and an inner connecting ring (223), one end of the rib (222) being connected to the outer connecting ring (221), and the other end being connected to the inner connecting ring (223), a first through hole (224) being provided at the center of the inner connecting ring (223), and a communication port (225) being formed between each adjacent rib (222).

4. The dust removal device for environmental protection engineering construction site according to claim 3 is characterized in that: The spray box assembly (300) further comprises a spray box body (310) and a drain pipe (330). The spray box body (310) is a hollow structure. The drain pipe (330) is connected to the spray box body (310). A second solenoid valve (331) is provided on the drain pipe (330). The slag discharge assembly (400) comprises a second reducer (410) and a holding pipe (420). One end of the second reducer (410) is connected to the holding pipe (420), and the other end is connected to the spray box body (310). The holding pipe (420) is provided with a second stop valve (421).

5. The dust removal device for environmental protection engineering construction site according to claim 4 is characterized in that: The water inlet pipe assembly (500) further comprises a water inlet pipe (510) and a plurality of spray heads (530); the water inlet pipe (510) is connected to an external water tank, and the water inlet pipe (510) extends into the interior of the spray box (310) and is connected to the spray heads (530); a second one-way valve (601) is provided on the first exhaust pipe (600), and a third solenoid valve (701), a pressure sensor (702), and a third one-way valve (703) are provided on the second exhaust pipe (700).

6. The dust removal device for environmental protection engineering construction site according to claim 5, characterized in that: The top of the compression chamber cylinder (810) is provided with a compression chamber connecting block (811), and the compression chamber connecting block (811) is provided with a sealing groove (812). The top of the outer periphery of the compression chamber cylinder (810) is connected to a lower pressure plate (813), and the lower pressure plate (813) is provided with a threaded hole (814); the second airbag inlet pipe (830) is provided with a third stop valve (831), the second airbag exhaust pipe (840) is provided with a fourth stop valve (841), and the second airbag (860) is provided with a second quick release valve. A flexible connecting tube (861) and a third quick-insert flexible connecting tube (862) are connected, a strip groove (871) is provided on the outer periphery of the airbag fixing tube (870), the compression chamber top cover (850) includes a cover plate (851) and a handle (852), the handle (852) is located on the top of the cover plate (851) and is fixedly connected thereto, a sealing boss (854) is provided on the bottom of the cover plate (851), an upper pressing plate (853) is connected to the outer periphery of the cover plate (851), and a second through hole (855) is provided on the upper pressing plate (853).

7. The dust removal device for environmental protection engineering construction site according to claim 6, characterized in that: It also includes a dryer (900), wherein an inlet of the dryer (900) is in communication with both the first exhaust pipe (600) and the second exhaust pipe (700).

8. The method for using the dust removal device for environmental protection engineering construction site according to claim 7, characterized in that: The method of use includes a normal dust removal method S1 and an accelerated dust removal method S2; The normal dust removal method S1 includes the following steps: S11, when the dust concentration of the dust-laden exhaust gas does not reach the set value of the dust concentration sensor (101), the first airbag (210) and the second airbag (860) are both in a fully inflated state, the first solenoid valve (111) is in an open state, and the dust-laden exhaust gas enters the spray box (310) through the main feed pipe (100); S12, the dust removal water is pressurized by the booster pump (520) to the spray head (530), and the dust-laden exhaust gas in step S11 is sprayed, and the dust particles in the dust-laden exhaust gas are removed by the water sprayed by the spray head (530); S13, as the dust-laden exhaust gas continues to flow in, the pressure of the spray-treated gas in the spray box (310) increases, and the gas enters the dryer (900) through the first exhaust pipe (600); The accelerated dust removal method S1 includes the following steps: S21, when the dust concentration of the dust-laden exhaust gas reaches the set value of the dust concentration sensor (101), the dust concentration sensor (101) feeds back a signal to the PLC control system, thereby increasing the power of the booster pump (520) and increasing the spraying pressure and spraying volume of the spray head (530); S22, simultaneously opening the first stop valve (141) and the fourth stop valve (841), exhausting the first airbag (210) and the second airbag (860) to the outside, increasing the flow area of the second main feed pipe (130), reducing the air pressure in the spray box (310), and accelerating the speed at which the dust-laden exhaust gas enters the main feed pipe (100); S23, when the first airbag (210) is exhausted, a stop valve (141) is closed; when the second airbag (860) is exhausted, a fourth stop valve (841) is closed and a third solenoid valve (701) is opened; S24, when the air pressure in the spray box (310) reaches the preset value of the pressure sensor (702), the pressure sensor (702) feeds back a signal to the PLC control system, closing the first solenoid valve (111); S25, the dust-laden exhaust gas is continuously sprayed in the spray box (310); S26, after a preset time, the first stop valve (141) is opened to inflate the first airbag (210), and the third stop valve (831) is opened to inflate the second airbag (860), so that the pressure of the sprayed gas in the spray box (310) increases and is discharged simultaneously through the first exhaust pipe (600) and the second exhaust pipe (700); S27, when the gas in the spray box (310) cannot be discharged in step S26, the operation of the booster pump (520) is stopped, and the vent valve on the top of the compression chamber top cover (850) is opened to release the gas, and the vent valve is closed after the venting is completed.

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