Negative pressure exhaust gas collection air duct

Abstract

The present application relates to waste gas collection technical field, disclose a kind of negative pressure waste gas collection air pipe, including air pipe body, front filter screen plate, annular adsorption purification mechanism, circulating spray purification mechanism and rear filter screen plate, the inside of air pipe body is equipped with fan assembly near rear end, front filter screen plate is equipped in the front end of air pipe body, rear filter screen plate is equipped in the rear end of air pipe body, annular adsorption purification mechanism is equipped in the one of air pipe body near front end, annular adsorption purification mechanism is used for annular adsorption waste gas purification discharge;Circulating spray purification mechanism is equipped in the middle of air pipe body, and for by circulating spray water mist is formed to reduce waste gas concentration.The present application is through the synergistic effect of annular adsorption purification mechanism and circulating spray purification mechanism, realize the efficient multilayer purification to waste gas, solve the problem of low efficiency and poor applicability of existing single purification technology when handling complex waste gas, applicable to industrial waste gas treatment, urban sewage treatment plant waste gas collection and a variety of scenes.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of waste gas collection, in particular to a negative pressure waste gas collection air pipe. BACKGROUND

[0002] With the rapid development of industry, a large amount of waste gas is generated in various industrial production processes. These waste gases are complex in composition, containing particulate matter, organic pollutants, odor gases and harmful chemical substances, etc. If they are directly discharged into the atmosphere without effective treatment, they will cause serious pollution to the environment and affect the quality of life of the surrounding residents.

[0003] In order to reduce the impact of waste gas emission on the environment, strict environmental protection regulations have been formulated by various countries, requiring industrial enterprises to collect and treat waste gas to ensure that the emission meets the standards. The negative pressure waste gas collection air pipe emerges as the times require. The negative pressure waste gas collection air pipe forms a negative pressure environment inside the air pipe, effectively collects the waste gas generated in the industrial production process, and transports it to the subsequent purification treatment equipment. It is an important part of the waste gas treatment system.

[0004] The fan assembly structure of the existing negative pressure waste gas collection air pipe has the problems of large air flow resistance and high noise. Moreover, the filtering precision of the filter material used is limited, and some small particles or harmful waste gas cannot be effectively intercepted, resulting in that part of the small particles and harmful waste gas will enter the subsequent purification link or be directly discharged into the atmosphere, affecting the waste gas treatment effect. The applicability of some single adsorption purification structure is poor in efficiently treating complex composition waste gas. Therefore, it is necessary to design a corresponding technical scheme to solve the problem. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application provides a negative pressure waste gas collection air pipe to solve the technical problems.

[0006] To achieve the above purpose, the present application realizes the following technical scheme: a negative pressure waste gas collection air pipe, comprising an air pipe body, a front filter screen plate, an annular adsorption purification mechanism, a circulating spray purification mechanism and a rear filter screen plate, a fan assembly is arranged at the rear end of the inside of the air pipe body, and the fan assembly is installed on the inner side wall of the air pipe body.

[0007] The front filter screen plate is arranged at the front end of the air pipe body, the rear filter screen plate is arranged at the rear end of the air pipe body, a plurality of mounting plates one are fixedly distributed around the inner side of the front filter screen plate, a plurality of mounting plates two are fixedly distributed around the inner side of the rear filter screen plate, and the mounting plates one and two are installed on the front and rear ends of the outer side wall of the air pipe body.

[0008] The annular adsorption purification mechanism is arranged around the front end of the air pipe body, and the annular adsorption purification mechanism is used for annular adsorption and purification of waste gas.

[0009] The circulating spray purification mechanism is arranged at the middle of the air pipe body and is used for reducing the exhaust gas concentration by forming water mist through circulating spray, and the circulating spray purification mechanism comprises a base which is arranged at the middle of the bottom of the air pipe body in a stepped structure, and the front and rear ends of the base are both fixedly provided with a bottom plate.

[0010] Preferably, the fan assembly comprises a driving motor, a power output end, a driving shaft, a wind blade, a cross plate and a support plate, the driving shaft is connected to the front end of the driving motor, the wind blade is fixedly arranged on the outside of the driving shaft, the rear end of the driving motor is provided with a mounting bracket, the mounting bracket extends upwards to both ends and is provided with a fixed plate, the cross plate is fixedly arranged at both ends of the fixed plate, the support plate is fixedly arranged at the rear end of the fixed plate in an inverted L-shaped plate structure, and both ends of the cross plate and the lower end of the support plate are mounted on the inner side wall of the air pipe body; the front end of the cross plate is fixedly provided with a pointed end structure, and the front end of the support plate is a chamfered structure; the power output end is used for supplying power to the driving motor, the driving motor is used for driving and controlling the rotation of the driving shaft and the wind blade to generate stable negative pressure, so that the air flows from right front to back, the mounting bracket is used for stably mounting the driving motor in an X-shaped structure, the fixed plate is used for extending the mounting bracket upwards to mount the cross plate, the fixed plate is used for fixedly arranging the support plate rearward, and the support plate in an inverted L-shaped plate structure cooperates with the cross plate to stably mount the fan assembly to the inner side wall of the air pipe body; the pointed end structure and the chamfered structure of the support plate enhance the stability of the fan assembly, optimize the internal airflow distribution of the air pipe body, reduce the flow resistance, enable the exhaust gas to pass through the inside efficiently, and reduce airflow turbulence and energy loss.

[0011] Preferably, the mounting bracket is in an X-shaped structure, and a through hole is arranged at the middle of the mounting bracket; a fixed rod is fixedly arranged at the inner upper end of the support plate, an active adjustment locking structure is arranged above the fixed rod, and the active adjustment locking structure comprises an adjustment groove, an adjustment rod, a limiting disc, an extension bracket, an adjustment screw, a protruding block and an extension rod; the adjustment groove is arranged at the inner upper end of the support plate above the fixed rod, the adjustment rod is slidably connected to the inside of the adjustment groove, the limiting disc is fixedly arranged at the outer end of the adjustment rod and is limitingly and slidably connected to the rear end of the support plate, and the adjustment rod is adjusted up and down in the through hole; the fixed rod is fixedly connected to the lower side of the mounting bracket, the adjustment rod is actively connected to the through hole, the adjustment rod is actively adjusted up and down in the adjustment groove, the limiting disc is used for assisting the limiting and sliding of the adjustment rod, and the fan assembly can be further stably supported to the front end of the support plate.

[0012] Preferably, the extension frame is fixed symmetrically at both ends of the limiting disc in a right-angled plate structure, the adjusting screw is connected to the inside of the extension frame through threads, the protruding block is fixed at the outer end of the adjusting screw, and the extension rods are fixedly distributed on the outer side wall of the protruding block; the right-angled plate structure of the extension frame is used to extend and support the adjusting screw at both ends of the limiting disc, the adjusting screw is used to adjust and lock to both sides of the support plate, and the extension rods are used to rotate and operate the protruding block and the adjusting screw by hand.

[0013] Preferably, the ring-shaped adsorption purification mechanism comprises a ring pipe, a suction device and a filter cartridge, the filter cartridge is connected and distributed around the air pipe body, the ring pipe is arranged outside the air pipe body and penetrates the filter cartridge, one end of the ring pipe is connected with a connecting pipe, the rear end of the connecting pipe is connected with a suction pipe, the lower part of the suction pipe is connected to the upper part of the suction device, the outer side of the suction device is connected with an air outlet pipe, and the lower end of the suction device is fixedly provided with a support rod; the support rod is used to support the suction device upward, the suction device is used to control the suction of the ring pipe through the suction pipe and the connecting pipe, and the ring pipe is used to connect the filter cartridge all around.

[0014] Preferably, the inner end of the filter cartridge is fixedly provided with an air inlet cover, the outer end of the filter cartridge is provided with a sealing cover, the outer end of the sealing cover is fixedly provided with a pull rod, one side of the sealing cover is connected and distributed with locking bolts through threads, and the inner end of the sealing cover is fixedly provided with a filter core; the air inlet cover is located inside the air pipe body to suck air, the sealing cover, the locking bolts and the sealing cover cooperate with each other to facilitate the maintenance and replacement of the filter core, reduce the operation cost, the detachable design facilitates the replacement of the filter core, prolongs the service life of the equipment, and reduces the long-term operation cost; the filter core is made of activated carbon and zeolite composite material, the activated carbon has a rich microporous structure and can adsorb organic pollutants and odors in waste gas; the zeolite has a regular pore structure and a large specific surface area, and has good adsorption selectivity for some specific harmful gases such as ammonia and hydrogen sulfide; the combination of the two can comprehensively exert their advantages and improve the adsorption capacity for various harmful gases.

[0015] Preferably, the circulating spray cleaning mechanism comprises a top plate, a water spray pipe, a water outlet, a water baffle and a water pump, the top plate is an arc-shaped plate structure arranged above the air pipe body, the water spray pipe is connected to the inner side wall of the top plate and penetrates through the upper end of the air pipe body, the inner end of the water spray pipe is provided with a spray head, the water outlet is arranged at the lower end of the air pipe body, and the water baffle is fixedly arranged at the front and rear ends of the water outlet; the front end of the water pump is fixedly connected with the front lower end of the base, the upper end of the water pump is connected with a pump water pipe one, the upper end of the pump water pipe one is provided with a water purification filter cartridge, the upper end of the water purification filter cartridge is provided with a pump water pipe two, and the upper end of the pump water pipe two is connected to the middle of the upper end of the top plate; the arc-shaped plate structure of the top plate is used for connecting multiple groups of water spray pipes to the inner end in an arc shape, the water spray pipe is used for penetrating through the spray head, the spray head is used for spraying the air pipe body, multiple water outlets are arranged in an array for water outlet, the water baffle is used for blocking the water flow to avoid flowing out of the front and rear ends, the water pump is used for controlling water pumping through the water suction pipe connected to the inside of the base, the pump water pipe one and the pump water pipe two are used for pumping water to the top plate, and the water purification filter cartridge is used for further effectively filtering impurities in the sprayed water, so as to realize the recycling of water resources; the water purification filter cartridge adopts a ceramic filter element made of natural mineral materials, has a porous structure, uniform pore size, good chemical stability and high temperature resistance, can withstand high water pressure and temperature, and can be regenerated by backwashing and the like, and has a large number of repeated use times.

[0016] Preferably, the inside of the base is inserted with a filter plate assembly, the outer end of the filter plate assembly is fixedly provided with a baffle, the outer end of the baffle is provided with a lifting device in the middle, and the both ends of the baffle are fixedly provided with mounting ring plates, and the mounting ring plates are mounted to the both ends of the base outside.

[0017] Compared with the prior art, the beneficial effects of the present application: through the synergistic effect of the annular adsorption purification mechanism and the circulating spray purification mechanism, efficient multi-level purification of waste gas is realized, the problems of low efficiency and poor applicability of the existing single purification technology in treating complex waste gas are solved, the annular adsorption purification mechanism can adsorb pollutants in a ring shape, more comprehensively capture waste gas, and complete the preliminary purification of particulate matter after adsorbing the waste gas, the annular structure design increases the adsorption area and improves the purification efficiency, avoiding the dead angle problem that may exist in the traditional linear adsorption; the circulating spray purification mechanism forms water mist through the water spray pipe and the spray head, the water mist fully contacts with the waste gas, so that the soluble harmful substances in the waste gas are dissolved in the water, further reducing the concentration of pollutants in the waste gas, the water resources are recycled and filtered through the circulating structure for reuse, the circulating spray effectively removes fine particulate matter and part of soluble pollutants in the waste gas, improves the purification effect, saves water resources, and greatly improves the waste gas treatment capacity; suitable for industrial waste gas treatment, urban sewage treatment plant waste gas collection and other scenes, has wide market application prospect. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the overall front view angle structure schematic diagram of the application;

[0019] Figure 2 It is the overall rear view angle structure schematic diagram of the application;

[0020] Figure 3 It is the front filter screen plate structure schematic diagram of the application;

[0021] Figure 4 It is the rear filter screen plate structure schematic diagram of the application;

[0022] Figure 5 It is the overall structure schematic diagram of the annular adsorption purification mechanism of the application;

[0023] Figure 6 It is the Figure 5 It is the enlarged structure schematic diagram of A in the application;

[0024] Figure 7 It is the internal cross-section structure schematic diagram of the filter cartridge of the application;

[0025] Figure 8 It is the front structure schematic diagram of the circulating spray purification mechanism of the application;

[0026] Figure 9 It is the rear structure schematic diagram of the circulating spray purification mechanism of the application;

[0027] Figure 10 It is the internal structure schematic diagram of the base of the application;

[0028] Figure 11It is the whole internal front fan assembly structure schematic diagram of the present application;

[0029] Figure 12 It is the front installation structure schematic diagram of the fan assembly of the present application;

[0030] Figure 13 It is the rear installation structure schematic diagram of the fan assembly of the present application;

[0031] Figure 14 It is the Figure 13 It is the enlarged structure schematic diagram of the middle B;

[0032] Figure 15 It is the activity adjustment locking structure schematic diagram of the present application.

[0033] In the figure: 1, air pipe body; 10, driving motor; 101, power output end; 11, driving shaft; 12, air blade; 13, cross plate; 131, tip structure; 14, support plate; 141, fixed rod; 142, adjustment rod; 1421, limiting disc; 1422, extension frame; 1423, adjustment screw rod; 1424, protruding block; 1425, extension rod; 140, adjustment groove; 15, mounting frame; 151, fixed plate; 152, through hole;

[0034] 2, front filter screen plate; 21, mounting plate one;

[0035] 3, annular adsorption purification mechanism; 31, ring pipe; 311, connecting pipe; 32, air suction device; 321, air suction pipe; 322, air outlet pipe; 323, support rod; 33, filter cartridge; 34, air inlet cover; 35, sealing cover; 351, pull rod; 352, locking bolt; 36, filter element;

[0036] 4, circulating spray purification mechanism; 41, top plate; 42, water spraying pipe; 421, spray head; 43, drain hole; 44, water baffle; 45, base; 451, bottom plate; 46, water pump; 461, water suction pipe; 462, pump water pipe one; 4621, pump water pipe two; 4622, water filter cartridge; 47, filter plate assembly; 471, baffle; 472, lifting device; 473, mounting ring plate;

[0037] 5, rear filter screen plate; 51, mounting plate two. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the protection scope of the present application.

[0039] Please refer to Figures 1-15 The embodiment of the present application provides a technical scheme: a negative pressure waste gas collecting air pipe, comprising an air pipe body 1, a front filter screen plate 2, an annular adsorption purification mechanism 3, a circulating spray purification mechanism 4 and a rear filter screen plate 5, a fan assembly is arranged at the inner side of the rear end of the air pipe body 1, the fan assembly is installed on the inner side wall of the air pipe body 1, the fan assembly is compact in structure and can generate stable negative pressure to suck in waste gas and push it through the purification system.

[0040] The front filter screen plate 2 is arranged at the front end of the air pipe body 1, the front filter screen plate 2 first filters large-particle impurities entering the air pipe, prevents the large-particle impurities from entering the subsequent purification link and affecting the purification effect and the service life of the equipment, the rear filter screen plate 5 is arranged at the rear end of the air pipe body 1, the rear filter screen plate 5 filters the waste gas purified through the front purification treatment again, ensures that the discharged waste gas reaches the environmental protection standard, a plurality of installation plates one 21 are fixedly distributed around the inner side of the front filter screen plate 2, a plurality of installation plates two 51 are fixedly distributed around the inner side of the rear filter screen plate 5, the installation plates one 21 and the installation plates two 51 are installed on the outer side wall of the air pipe body 1 at the front and rear ends, and the installation plates one 21 and the installation plates two 51 are used for quickly disassembling, maintaining and cleaning the front filter screen plate 2 and the rear filter screen plate 5.

[0041] The annular adsorption purification mechanism 3 is arranged around the air pipe body 1 near the front end, and the annular adsorption purification mechanism 3 is used for annular adsorption waste gas purification and discharge.

[0042] The circulating spray purification mechanism 4 is arranged at the middle of the air pipe body 1 and is used for forming water mist to reduce the concentration of waste gas through circulating spray, the circulating spray purification mechanism 4 comprises a base 45, the base 45 is fixedly arranged at the middle of the bottom of the air pipe body 1 in a ladder structure, and bottom plates 451 are fixedly arranged at the front and rear ends of the base 45 and used for extending and stably supporting installation.

[0043] The front filter screen plate 2 adopts polytetrafluoroethylene (PTFE) film filter material, a layer of PTFE microporous film is covered on the surface of ordinary filter material, the PTFE film has a very small pore size, usually between 0.1-3mm, can prevent finer particles from passing through, and at the same time, the surface is smooth and not easy to adhere dust, facilitating cleaning; the rear filter screen plate 5 adopts glass fiber filter paper, the glass fiber filter paper has the characteristics of high filtration efficiency, low resistance and high temperature resistance, the fiber diameter is fine, the porosity is high, can effectively intercept the fine particles in the waste gas, and the chemical stability of the glass fiber filter paper is good, can resist the corrosion of chemical substances in the waste gas.

[0044] Further improved, the fan assembly comprises a driving motor 10, a power output end 101, a driving shaft 11, a fan blade 12, a cross plate 13 and a support plate 14, the driving shaft 11 is connected to the front end of the driving motor 10, the fan blade 12 is fixedly arranged outside the driving shaft 11, the rear end of the driving motor 10 is provided with a mounting frame 15, the mounting frame 15 extends upwardly at both ends to be provided with a fixed plate 151, the cross plate 13 is fixedly arranged at both ends of the fixed plate 151, the support plate 14 is fixedly arranged at the rear end of the fixed plate 151 in an inverted L-shaped plate structure, and both ends of the cross plate 13 and the lower end of the support plate 14 are mounted to the inner side wall of the air pipe body 1;

[0045] The front end of the cross plate 13 is fixedly provided with a pointed end structure 131, and the front end of the support plate 14 is a chamfered structure.

[0046] The power output end 101 is used for power supply to the driving motor 10, the driving motor 10 is used for driving control of the driving shaft 11 and the fan blade 12 to rotate to generate stable negative pressure, so that the air flows right front and rear, the mounting frame 15 is used for stably mounting the driving motor 10 in an X-shaped structure, the fixed plate 151 is used for extending upwardly to mount the cross plate 13 to the mounting frame 15, the fixed plate 151 is used for fixedly arranging the support plate 14 rearwardly, the support plate 14 in an inverted L-shaped plate structure cooperates with the cross plate 13 to stably mount the fan assembly to the inner side wall of the air pipe body 1, the pointed end structure 131 and the support plate 14 in a chamfered structure enhance the stability of the fan assembly, optimize the internal airflow distribution of the air pipe body 1, reduce the flow resistance, so that the exhaust gas can pass through the inside efficiently, reduce airflow turbulence and energy loss.

[0047] Further improved, the mounting frame 15 is in an X-shaped structure, and a through hole 152 is formed in the middle of the mounting frame 15;

[0048] The inner proximal end of the support plate 14 is fixedly provided with a fixed rod 141, the upper side of the fixed rod 141 is provided with a movable adjusting and locking structure, the movable adjusting and locking structure comprises an adjusting groove 140, an adjusting rod 142, a limiting disc 1421, an extension frame 1422, an adjusting screw 1423, a protrusion 1424 and an extension rod 1425, the adjusting groove 140 is formed in the inner proximal end of the support plate 14 and located above the fixed rod 141, the adjusting rod 142 is slidably connected to the inside of the adjusting groove 140, the limiting disc 1421 is fixedly arranged at the outer proximal end of the adjusting rod 142 and is limitingly and slidably connected to the rear end of the support plate 14, and the adjusting rod 142 is adjusted up and down in the through hole 152.

[0049] The fixed rod 141 is fixedly connected to the lower side of the mounting frame 15, the adjusting rod 142 is movably connected to the through hole 152, the adjusting rod 142 is adjusted up and down in the adjusting groove 140, and the limiting disc 1421 is used for limiting and sliding the adjusting rod 142, and the fan assembly can be further stably supported to the front end of the support plate 14.

[0050] Further improvement, the extension frame 1422 is fixed symmetrically in the form of right-angled plate structure at both ends of the limiting disc 1421, the adjusting screw 1423 is connected to the inside of the extension frame 1422 through the thread, the protrusion 1424 is fixed at the outer end of the adjusting screw 1423, and the extension rod 1425 is fixedly distributed on the outer side wall of the protrusion 1424;

[0051] The extension frame 1422 in the form of right-angled plate structure is used for extending and supporting the adjusting screw 1423 to both ends of the limiting disc 1421, the adjusting screw 1423 is used for being adjusted and locked to both sides of the support plate 14, and the extension rod 1425 is used for being hand-held to rotate the protrusion 1424 and the adjusting screw 1423.

[0052] Further improvement, the annular adsorption purification mechanism 3 comprises a ring pipe 31, a suction device 32 and a filter cylinder 33, the filter cylinder 33 is connected and distributed around the air pipe body 1, and the ring pipe 31 is arranged outside the air pipe body 1 and penetrates and connects the filter cylinder 33;

[0053] One end of the ring pipe 31 is connected with a connecting pipe 311, the rear end of the connecting pipe 311 is connected with a suction pipe 321, the lower part of the suction pipe 321 is connected to the upper part of the suction device 32, the outer side of the suction device 32 is connected with an air outlet pipe 322, and the lower end of the suction device 32 is fixedly provided with a support rod 323;

[0054] The support rod 323 is used for supporting the suction device 32 upward, the suction device 32 is used for controlling suction through the suction pipe 321, the connecting pipe 311 and the ring pipe 31, and the ring pipe 31 is used for connecting the filter cylinder 33 all around.

[0055] Further improvement, the inner end of the filter cylinder 33 is fixedly provided with an air inlet cover 34, the outer end of the filter cylinder 33 is provided with a sealing cover 35, the outer end of the sealing cover 35 is fixedly provided with a pull rod 351, one round of the sealing cover 35 is connected and distributed with locking bolts 352 through the thread, and the inner end of the sealing cover 35 is fixedly provided with a filter core 36;

[0056] The air inlet cover 34 is located inside the air pipe body 1 to perform suction, the sealing cover 35, the locking bolts 352 and the sealing cover 35 are matched with each other to facilitate maintenance and replacement of the filter core, reduce operation cost, the detachable design facilitates replacement of the filter core 36, prolongs the service life of the equipment, and reduces long-term operation cost; the filter core 36 adopts activated carbon and zeolite composite material, the activated carbon has rich microporous structure and can adsorb organic pollutants and peculiar smell in waste gas; the zeolite has regular pore structure and large specific surface area and has good adsorption selectivity for some specific harmful gases such as ammonia and hydrogen sulfide; the combination of the two can comprehensively exert their advantages and improve the adsorption capacity for various harmful gases.

[0057] Further improved, the circulating spray cleaning mechanism 4 comprises a top plate 41, a water spraying pipe 42, a water outlet hole 43, a water baffle 44 and a water pump 46. The top plate 41 is an arc-shaped plate structure arranged above the air pipe body 1. The water spraying pipe 42 is connected to the inner side wall of the top plate 41 and penetrates through the upper end of the air pipe body 1. The inner end of the water spraying pipe 42 is provided with a spray head 421. The water outlet hole 43 is arranged at the lower end of the air pipe body 1. The water baffle 44 is fixedly arranged at the front and rear ends of the water outlet hole 43.

[0058] The front end of the water pump 46 is fixedly connected with the front lower end of the base 45 through a water suction pipe 461. The upper end of the water pump 46 is connected with a pump water pipe I 462. The upper end of the pump water pipe I 462 is provided with a water purification filter cartridge 4622. The upper end of the water purification filter cartridge 4622 is provided with a pump water pipe II 4621. The upper end of the pump water pipe II 4621 is connected to the middle of the upper end of the top plate 41.

[0059] The arc-shaped plate structure of the top plate 41 is used to connect multiple groups of water spraying pipes 42 to the inner end in an arc shape. The water spraying pipe 42 is used to penetrate through the spray head 421. The spray head 421 is used to spray water to the air pipe body 1. Multiple water outlet holes 43 are arranged in an array to discharge water. The water baffle 44 is used to block the water flow to avoid flowing out of the front and rear ends. The water pump 46 is used to control the water suction through the water suction pipe 461 connected to the inside of the base 45. The pump water pipe I 462 and the pump water pipe II 4621 are used to pump water to the top plate 41. The water purification filter cartridge 4622 is used to further effectively filter impurities in the sprayed water, realizing the recycling of water resources.

[0060] The water purification filter cartridge 4622 adopts a ceramic filter element made of natural mineral materials. It has a porous structure with uniform pore size, good chemical stability and high temperature resistance, can withstand high water pressure and temperature, and can be regenerated by backwashing and other methods for repeated use.

[0061] Specifically improved, the inside of the base 45 is inserted with a filter plate assembly 47. The outer end of the filter plate assembly 47 is fixedly provided with a baffle 471. The outer end of the baffle 471 is provided with a lifting device 472 in the middle. The two ends of the baffle 471 are fixedly provided with mounting ring plates 473. The mounting ring plates 473 are mounted to the outer two ends of the base 45.

[0062] The mounting ring plate 473 is used to mount the baffle 471 to the outer end of the base 45. The baffle 471 is used to fix the filter plate assembly 47 to the inner end. The filter plate assembly 47 is used to filter the water flow after spraying and cleaning. The filtered water enters the inside of the base 45.

[0063] The filter plate assembly 47 adopts a polypropylene (PP) multi-faced hollow sphere. The PP multi-faced hollow sphere has the characteristics of large specific surface area, high void ratio and light weight. Its unique structure can increase the contact area of water and filter material, improve the filtration efficiency, and the PP material has good chemical stability and corrosion resistance, which can meet the requirements of different water quality.

[0064] Working principle: through the power output end 101 external power supply for driving motor 10 start, drive shaft 11 blade 12 high speed rotation, so that the wind pipe body 1 by the front to the back into the wind;

[0065] First through the front filter screen plate 2 to the large particles impurities into the wind pipe preliminary filtration, prevent its into the subsequent purification link influence purification effect and equipment service life;

[0066] Start annular adsorption purification mechanism 3 suction device 32, through the suction pipe 321, connecting pipe 311 connecting ring pipe 31 suction, again through the air outlet pipe 322 air outlet, a plurality of filter cartridge 33 and air inlet cover 34 to the wind pipe body 1 inside a week inhale exhaust gas, and through the filter core 36 filtration purification, annular adsorption of pollutants comprehensive capture exhaust gas, and exhaust gas suction after the completion of the preliminary purification of particulate matter, annular structure design increases the adsorption area, improve the purification efficiency, avoid the traditional straight line type adsorption possible dead angle problem;

[0067] Through the start of the circulating spray purification mechanism 4 water pump 46, through the water pump 461 extraction inside the base 45 water, through the pump water pipe one 462, water filter cartridge 4622 and pump water pipe two 4621 pump to the top plate 41, through a plurality of water spray pipe 42 and spray head 421 evenly downward spray form water mist, water mist and exhaust gas contact, so that the soluble harmful substances in exhaust gas dissolved in water, further reduce the concentration of pollutants in exhaust gas, water flow through the drain hole 43 to the inside of the base 45, again through the filter plate assembly 47 effectively remove the exhaust gas in the fine particulate matter and part of the soluble pollutants, improve the purification effect, using the circulating structure of water resources for recycling and reuse;

[0068] Finally through the rear filter screen plate 5 to the exhaust gas after the front purification treatment again, ensure that the exhaust emissions to meet environmental standards.

[0069] The above shows and describes the basic principles and main features of the present application and the advantages of the present application, for those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and can be realized in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0070] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature or implementation described herein. The specification can include implicit combinations of explicitly mentioned features and / or implicit combinations of implicitly mentioned features. Such combinations are also expressly included within the scope of the specification and an embodiment.

Claims

1. A negative pressure exhaust gas collecting air duct, comprising an air duct body (1), a front filter screen plate (2), an annular adsorption purification mechanism (3), a circulating spray purification mechanism (4) and a rear filter screen plate (5), characterized in that: The inner side of the front filter screen plate (2) is fixedly provided with an installation plate one (21) around the periphery, and the inner side of the rear filter screen plate (5) is fixedly provided with an installation plate two (51) around the periphery, both of which are installed on the outer side wall of the air pipe body (1) at the front and rear ends. The annular adsorption purification mechanism (3) is arranged around the periphery of the air pipe body (1) near the front end, and is used for annular adsorption of waste gas purification and discharge. The annular adsorption purification mechanism (3) comprises a ring pipe (31), a suction device (32) and a filter cylinder (33), the filter cylinder (33) is arranged around the periphery of the air pipe body (1) and is connected through the air pipe body (1), and the ring pipe (31) is arranged outside the air pipe body (1) and connects the filter cylinder (33) through. The inner end of the filter cylinder (33) is fixedly provided with an air inlet cover (34), the outer end of the filter cylinder (33) is provided with a sealing cover (35), the outer end of the sealing cover (35) is fixedly provided with a pull rod (351), the periphery of the sealing cover (35) is threadedly connected with locking bolts (352), and the inner end of the sealing cover (35) is fixedly provided with a filter core (36). The annular adsorption purification mechanism (3) comprises a ring pipe (31), a suction device (32) and a filter cylinder (33), the filter cylinder (33) is arranged around the periphery of the air pipe body (1) and is connected through the air pipe body (1), and the ring pipe (31) is arranged outside the air pipe body (1) and connects the filter cylinder (33) through. The inner end of the filter cylinder (33) is fixedly provided with an air inlet cover (34), the outer end of the filter cylinder (33) is provided with a sealing cover (35), the outer end of the sealing cover (35) is fixedly provided with a pull rod (351), the periphery of the sealing cover (35) is threadedly connected with locking bolts (352), and the inner end of the sealing cover (35) is fixedly provided with a filter core (36). The annular adsorption purification mechanism (3) comprises a ring pipe (31), a suction device (32) and a filter cylinder (33), the filter cylinder (33) is arranged around the periphery of the air pipe body (1) and is connected through the air pipe body (1), and the ring pipe (31) is arranged outside the air pipe body (1) and connects the filter cylinder (33) through. ​ The front end of the water pump (46) is fixedly connected with the front lower end of the base (45), a water pumping pipe (461) is arranged between the front end of the water pump (46) and the front lower end of the base (45), the upper end of the water pump (46) is connected with a first pump water pipe (462), the upper end of the first pump water pipe (462) is provided with a water purification filter cylinder (4622), the upper end of the water purification filter cylinder (4622) is provided with a second pump water pipe (4621), and the upper end of the second pump water pipe (4621) is connected to the middle of the upper end of the top plate (41).

2. A negative pressure exhaust air collection duct according to claim 1, characterized in that: The fan assembly comprises a driving motor (10), a power output end (101), a driving shaft (11), a fan blade (12), a cross plate (13) and a support plate (14), the driving shaft (11) is connected to the front end of the driving motor (10), the fan blade (12) is fixedly arranged outside the driving shaft (11), the rear end of the driving motor (10) is provided with a mounting bracket (15), the mounting bracket (15) extends upwards at both ends and is provided with a fixed plate (151), the cross plate (13) is fixedly arranged at both ends of the fixed plate (151), the support plate (14) is fixedly arranged at the rear end of the fixed plate (151) in an inverted L-shaped plate structure, and both ends of the cross plate (13) and the lower end of the support plate (14) are mounted on the inner side wall of the air pipe body (1). The front end of the cross plate (13) is fixedly provided with a pointed end structure (131), and the front end of the support plate (14) is a chamfered structure.

3. A negative pressure exhaust air collection duct according to claim 2, wherein: The mounting bracket (15) is an X-shaped structure, and a through hole (152) is formed in the middle of the mounting bracket (15); The inner side near the upper end of the support plate (14) is fixedly provided with a fixed rod (141), an active adjusting and locking structure is arranged above the fixed rod (141), the active adjusting and locking structure comprises an adjusting groove (140), an adjusting rod (142), a limiting disc (1421), an extension bracket (1422), an adjusting screw rod (1423), a protruding block (1424) and an extension rod (1425), the adjusting groove (140) is formed in the inner side near the upper end of the support plate (14) and above the fixed rod (141), the adjusting rod (142) is slidably connected to the inside of the adjusting groove (140), the limiting disc (1421) is fixedly arranged on the outer side near the outer end of the adjusting rod (142) and is limitingly and slidably connected to the rear end of the support plate (14), and the adjusting rod (142) is adjusted up and down in the through hole (152).

4. A negative pressure exhaust air collection duct according to claim 3, wherein: The extension bracket (1422) is fixedly arranged at both ends of the limiting disc (1421) in a right-angled plate structure and a symmetrical manner, the adjusting screw rod (1423) is threadedly connected to the inside of the extension bracket (1422), the protruding block (1424) is fixedly arranged on the outer end of the adjusting screw rod (1423), and the extension rod (1425) is fixedly arranged on the outer side wall of the protruding block (1424).

5. A negative pressure exhaust air collection duct according to claim 1, wherein: The inside of the base (45) is inserted with a filter plate assembly (47), the outer end of the filter plate assembly (47) is fixedly provided with a baffle (471), the outer end of the baffle (471) is provided with a pulling device (472), and the both ends of the baffle (471) are fixedly provided with mounting ring plates (473) which are mounted on the both ends of the outside of the base (45).

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