A wet centrifugal dust removal structure for leather spraying waste gas

Abstract

The present invention relates to the field of centrifugal dust removal technology, specifically a wet centrifugal dust removal structure for leather spraying exhaust gas, including a wet centrifugal dust collector, wherein a centrifugal dust removal mechanism is provided on the inner side of the wet centrifugal dust collector. By arranging an induced draft washing unit at the air inlet of the wet centrifugal dust collector, the introduction and washing of leather spraying exhaust gas is achieved, and in conjunction with the vortex dust removal unit, the exhaust gas and washing liquid are centrifugally guided, and the centrifugal diffusion component and the dirt isolation and dehydration component are combined to generate a certain centrifugal force again, which can make the particulate matter carried in the air flow more easily thrown to the rear wall of the wet centrifugal dust collector, helping to improve the dust removal efficiency, reduce the escape of particulate matter, and enhance the disturbance of the gas, so as to achieve more comprehensive capture and separation of particulate matter, and at the same time disperse the impact force on the fixed conical cover ring, reduce the damage caused by direct scouring of the air flow, and enhance the stability of the structure.

Description

Technical Field

[0001] The invention relates to the technical field of centrifugal dust removal, in particular to a wet centrifugal dust removal structure for leather spraying waste gas. Background Art

[0002] In the leather production process, the spraying process is one of the main links that produces waste gas. These waste gases contain not only particulate matter, but may also contain volatile organic compounds such as organic solvents. If these pollutants are directly discharged into the atmosphere without treatment, they will have a serious impact on the environment and do not meet the requirements of environmental protection regulations. In wet dust removal technology, centrifugal dust removal structure is a commonly used structural form. The centrifugal dust collector uses the centrifugal force generated by the rotating airflow to separate the particulate matter in the waste gas. The waste gas generated during the spraying process enters the dust collector through the air inlet of the dust collector. Under the action of centrifugal force, the particulate matter is separated and deposited at the bottom of the dust collector, and the purified gas is discharged from the exhaust port.

[0003] In the prior art, there is an inverted wet dust removal and air washing machine with publication number CN214680873U, which belongs to the field of dust removal; the utility model includes a casing, a motor is fixed in the casing, an impeller is fixed on the output shaft of the motor, an air inlet is opened at the lower end of the casing, the air inlet is opposite to the impeller, and an air outlet is opened at the upper end of the casing.

[0004] In order to solve the problem of poor drainage and dust removal in the existing technology, the above document adopts a combination of a primary cyclone and a secondary cyclone to enhance the gas-liquid separation effect;

[0005] However, in actual use, although the two-stage cyclone can effectively guide the direction of the airflow and enhance the gas-liquid separation effect, the inverted distribution of the dust removal structure easily causes the particulate matter in the exhaust gas to accumulate on the cyclone and the motor, resulting in difficulties in discharging sewage and particulate matter; and the airflow is directly discharged to the air outlet under the centrifugal force, which not only easily causes the escape of particulate matter and water molecules, but also causes impact on the structure of the dust collector itself.

[0006] Therefore, the present invention proposes a wet centrifugal dust removal structure for leather spraying exhaust gas to solve the problem that the existing dust removal structure easily causes particulate matter in the exhaust gas to accumulate on the cyclone and motor, resulting in difficulty in discharging sewage and particulate matter; and the airflow is directly discharged to the air outlet under the centrifugal force, which not only easily causes the escape of particulate matter and water molecules, but also causes impact on the structure of the dust collector itself. Summary of the Invention

[0007] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a wet centrifugal dust removal structure for leather spraying waste gas to solve the problems mentioned in the above background technology.

[0008] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a wet centrifugal dust removal structure for leather spraying exhaust gas, comprising a wet centrifugal dust collector, a centrifugal dust removal mechanism is arranged on the inner side of the wet centrifugal dust collector, the centrifugal dust removal mechanism includes an induced draft washing unit, a vortex dust removal unit and a dehydration and sewage discharge unit, the induced draft washing unit includes a spraying exhaust gas connecting tube and a washing nozzle, the vortex dust removal unit includes a dust collector shell, the dehydration and sewage discharge unit includes a dust collector connecting pipe 1 and a dust collector connecting pipe 2, a blocking fence 2 is arranged at the connection between the dust collector connecting pipe 1 and the dust collector connecting pipe 2, and a blocking fence 1 is arranged at the input port of the spraying exhaust gas connecting tube.

[0009] Preferably, the vortex dust removal unit also includes a motor mounting shell, which is fixedly mounted on the inner side of the center of the dust collector shell, a motor is arranged inside the motor mounting shell, a vortex dispersion impeller is fixedly connected to the output shaft of the motor, and a guide vane is fixedly mounted on the outer surface of one end of the motor mounting shell close to the vortex dispersion impeller.

[0010] Preferably, the dehydration and sewage discharge unit also includes a centrifugal diffusion component, which includes a rotating turbofan and a rotating conical cover ring. The rotating turbofan is rotatably mounted on one end of the motor mounting housing away from the vortex dispersion impeller. The outer surface of the rotating turbofan is fixedly connected to a connecting guide rod, and the other end of the connecting guide rod is fixedly mounted with an annular connecting frame.

[0011] Preferably, a spoiler is provided on the outer surface of the annular connecting frame, and the spoiler includes a connecting panel and a connecting rear plate. The outer surface of the connecting panel is fixedly connected to the central inner side of the annular connecting frame, and the inner annular surface of the connecting panel is fixedly installed with a central blade. The central blade is provided in multiple groups and in a circular array about the central axis of the connecting guide rod, and one inner end of the central blade is fixedly connected to the outer surface of the connecting guide rod.

[0012] Preferably, gap blades are fixedly connected between the connection panel and the connection rear plate, and flow gaps are provided between two adjacent groups of the gap blades.

[0013] Preferably, the rotating conical cover ring is fixedly connected to the connecting guide rod through an annular connecting frame, the opening position of the rotating conical cover ring faces the direction of the vortex airflow, and a folded diffusion guide plate is fixedly installed on the rotating conical cover ring. The two sides of the folded diffusion guide plate are respectively provided with a guide slope surface and a retention groove surface, and the folded diffusion guide plate has a structure distribution with a wide inside and a narrow outside, and the guide slope surface faces inward.

[0014] Preferably, the dehydration and sewage discharge unit also includes a sewage isolation and dehydration component, which includes a fixed conical cover ring. A limiting member is provided at the connection between the fixed conical cover ring and the rotating conical cover ring. The opening position of the fixed conical cover ring is facing the direction of the vortex airflow. A sewage isolation filter plate is fixedly installed on the outer annular surface of the fixed conical cover ring, and sewage discharge grooves are evenly provided on the surface of the sewage isolation filter plate.

[0015] Preferably, a folded retention angle plate is provided on the inner side of the dirt-isolating filter plate, and the two ends of the folded retention angle plate are fixedly connected to the two ends of the fixed conical cover ring respectively, and the inner side of the folded retention angle plate is provided with a guide inclined groove which is narrow inside and wide outside.

[0016] Preferably, the outer ring surface of the fixed conical cover ring is fixedly connected to an annular outer cover, and the annular outer cover is arranged on the inner side wall of the dust collector connecting pipe 2, and an exhaust silencer assembly is arranged between the inner ring surface of the annular outer cover and the outer side of the fixed conical cover ring, and the exhaust silencer assembly includes a sloped guide ring, and the sloped guide ring is fixedly installed on the inner surface of the annular outer cover, and a noise reduction cavity is formed between the sloped guide ring and the annular outer cover, and a sound box and a mounting ring are arranged inside the noise reduction cavity, and the mounting ring is fixedly connected to one side surface of the sloped guide ring, and a partition plate is fixedly installed on the mounting ring, and the partition plates are arranged in a circular array about the central axis of the sloped guide ring, and a sound box is arranged between two groups of the partition plates.

[0017] Preferably, one side of the sound box is fixedly connected to the outer surface of the sloped guide ring, a sound receiving cavity is provided between the inner side of the sloped guide ring and the sloped guide ring, and a silencer arc plate is fixedly installed on the inner surface of the sound receiving cavity.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention proposes a wet centrifugal dust removal structure for leather spraying exhaust gas, which realizes the introduction and washing of leather spraying exhaust gas by arranging an induced draft washing unit at the air inlet of the wet centrifugal dust collector, and cooperates with the vortex dust removal unit to centrifugally guide the exhaust gas and the washing liquid, and utilizes the centrifugal diffusion component and the dirt isolation and dehydration component to combine together to generate a certain centrifugal force again, which can make the particulate matter carried in the airflow more easily thrown to the rear wall of the wet centrifugal dust collector, help to increase the dust removal efficiency, reduce the escape of particulate matter, and enhance the disturbance of the gas, so as to realize more comprehensive capture and separation of particulate matter, and at the same time can disperse the impact force on the fixed conical cover ring, reduce the damage caused by direct erosion of the airflow, enhance the stability of the structure, not only enhance the dust removal effect, improve the efficiency of exhaust gas treatment, but also effectively reduce noise pollution, ensure the stable operation of the equipment and environmental friendliness. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1The three-dimensional structure of the wet centrifugal dust collector of the present invention is shown in FIG. Figure 1 ;

[0021] Figure 2 The three-dimensional structure of the wet centrifugal dust collector of the present invention is shown in FIG. Figure 2 ;

[0022] Figure 3 It is a schematic diagram of a half-section structure of a wet centrifugal dust collector of the present invention;

[0023] Figure 4 This is a schematic structural diagram of the exhaust gas inlet perspective of the wet centrifugal dust collector of the present invention;

[0024] Figure 5 Schematic diagram of the internal structure of the wet centrifugal dust collector of the present invention;

[0025] Figure 6 It is a schematic cross-sectional structure diagram of the motor mounting housing of the present invention;

[0026] Figure 7 This is a schematic diagram of the connection structure between the rotary turbofan and the centrifugal diffuser assembly of the present invention;

[0027] Figure 8 For the present invention Figure 7 A schematic diagram of the enlarged structure at point A;

[0028] Figure 9 Schematic diagram of the connection structure between the spoiler and the rotating conical cover ring of the present invention;

[0029] Figure 10 It is a schematic diagram of the disassembled structure of the spoiler and the rotating conical cover ring of the present invention;

[0030] Figure 11 This is a schematic diagram of the cross-sectional structure of the inner side of the annular outer cover of the present invention;

[0031] Figure 12 This is a schematic diagram of the connection structure between the dirt isolation and dehydration assembly and the rotating conical cover ring of the present invention;

[0032] Figure 13 For the present invention Figure 12 A schematic diagram of the enlarged structure at point B;

[0033] Figure 14 It is a partial structural schematic diagram of the dirt isolation and dehydration component of the present invention;

[0034] Figure 15 Schematic diagram of a partial cross-section structure of an exhaust muffler assembly of the present invention;

[0035] Figure 16 For the present invention Figure 15 Schematic diagram of the enlarged structure at C;

[0036] Figure 17 This is a schematic diagram of the disassembled structure of the sloped guide ring and the sound box of the present invention;

[0037] Figure 18 For the present invention Figure 17 The enlarged structural diagram at D is shown.

[0038] Figure: 1. Wet centrifugal dust collector; 2. Spraying exhaust gas connection tube; 20. Isolation fence 1; 21. Air scrubber nozzle; 3. Dust collector housing; 31. Motor mounting housing; 32. Motor; 321. Vortex dispersion impeller; 322. Guide vane; 4. Dust collector connection pipe 1; 5. Dust collector connection pipe 2; 50. Isolation fence 2; 41. Rotating turbofan; 42. Connecting guide rod; 421. Annular connecting frame; 43. Rotating conical cover ring; 431. Limiting ring; 432. Folding diffusion guide plate; 4321. Guide slope; 432 2. Retention groove surface; 44. Connection panel; 441. Connection back plate; 442. Center blade; 443. Gap blade; 444. Flow gap; 45. Fixed conical cover ring; 450. Limit groove; 4500. Mounting groove; 4501. Ball; 451. Dirt filter plate; 4510. Drain trough; 452. Folding retention angle plate; 4521. Guide inclined groove; 51. Annular outer cover; 52. Slope guide ring; 521. Mounting ring; 522. Partition plate; 53. Sound box; 530. Sound chamber; 531. Silence arc plate. DETAILED DESCRIPTION

[0039] In order to clearly and completely describe the objectives and technical solutions of the present invention and make its advantages more clearly understood, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention, not to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] For example 1, please refer to Figure 1-18The present invention provides a technical solution: a wet centrifugal dust removal structure for leather spraying exhaust gas, comprising a wet centrifugal dust collector 1, a centrifugal dust removal mechanism is arranged on the inner side of the wet centrifugal dust collector 1, the centrifugal dust removal mechanism comprises an induced draft washing unit, a vortex dust removal unit and a dehydration and sewage discharge unit, the induced draft washing unit comprises a spraying exhaust gas connecting tube 2 and a washing nozzle 21, the vortex dust removal unit comprises a dust collector shell 3, the dehydration and sewage discharge unit comprises a dust collector connecting pipe 1 4 and a dust collector connecting pipe 2 5, the dust collector connecting pipe 1 4 and A blocking fence 2 50 is provided at the connection of the dust collector connecting pipe 2 5; a blocking fence 1 20 is provided at the input port of the spray exhaust gas connecting tube 2; the vortex dust removal unit also includes a motor mounting housing 31, which is fixedly mounted on the center inner side of the dust collector housing 3, and a motor 32 is disposed inside the motor mounting housing 31. A vortex dispersion impeller 321 is fixedly connected to the output shaft of the motor 32, and a guide vane 322 is fixedly mounted on the outer surface of one end of the motor mounting housing 31 near the vortex dispersion impeller 321;

[0041] In this embodiment, the front end position of the spray exhaust gas connecting tube 2 is connected to the leather spray exhaust gas output pipe. First, the booster pump at the input end of the washing nozzle 21 is controlled to realize the delivery of the washing liquid. At the same time, the motor 32 is controlled to turn on so that its output shaft rotates and drives the vortex dispersion impeller 321 to rotate at high speed. Under the rotational power, the washing liquid is sprayed onto the surface of the vortex dispersion impeller 321. At this time, the leather spray exhaust gas is introduced into the interior of the wet centrifugal dust collector 1. Under the centrifugal action of the vortex dispersion impeller 321 and the guidance of the guide blade 322, the exhaust gas is transported to the interior of the dust collector shell 3 to realize the dust removal of the spray exhaust gas. It should be noted that the motor mounting shell 31 here serves as a protective support for the motor 32. At the same time, the outer diameter of its circumferential part is the same as the hub diameter of the vortex dispersion impeller 321, which can effectively reduce air flow resistance, save electric energy, and help improve dust removal efficiency.

[0042] Example 2, refer to the attached Figure 1-18 On the basis of Example 1, in order to achieve the turbulence of the air flow and sewage mixture after the leather spraying exhaust gas is introduced, and to increase the dust removal effect:

[0043] The dehydration and sewage discharge unit also includes a centrifugal diffusion component, which includes a rotating turbofan 41 and a rotating conical cover ring 43. The rotating turbofan 41 is rotatably mounted on one end of the motor mounting housing 31 away from the vortex dispersion impeller 321. The outer surface of the rotating turbofan 41 is fixedly connected to a connecting guide rod 42, and the other end of the connecting guide rod 42 is fixedly mounted to an annular connecting frame 421; the outer surface of the annular connecting frame 421 is provided with a spoiler, which includes a connecting panel 44 and a connecting rear plate 441. The outer surface of the connecting panel 44 is fixedly connected to the center inner side of the annular connecting frame 421, and the inner annular surface of the connecting panel 44 is fixedly mounted with a central blade 442. The central blade 442 is provided with multiple groups and is arranged in a circular array about the central axis of the connecting guide rod 42. One inner end of the central blade 442 is fixedly connected to the outer surface of the connecting guide rod 42; a gap blade 443 is fixedly connected between the connecting panel 44 and the connecting rear plate 441, and a flow gap 444 is provided between two adjacent groups of gap blades 443;

[0044] In this embodiment, under the joint action of the vortex dispersion impeller 321 and the guide blades 322, the air flow flows toward the output end position of the dust collector housing 3. Under the action of the high-speed air flow, the rotating turbofan 41 rotates, and the rotating turbofan 41 is connected to the spoiler and the rotating conical cover ring 43 through the connecting guide rod 42, so that the particulate matter in the air flow undergoes secondary centrifugal dust removal. Specifically, when the connecting guide rod 42 drives the rotating conical cover ring 43 to rotate, the air flow and sewage mixture is centrifugally thrown toward the guide slope 4321 of the folded diffusion guide plate 432. At this time, the air flow and sewage mixture are guided toward the rotating conical cover ring 43 away from the opening position under the centrifugal action and the guiding action of the guide slope 4321. Figure 7 As shown, the sewage mixture gathers toward the central spoiler position. At this time, the airflow and sewage mixture, in cooperation with the central blade 442 and the gap blade 443, are thrown out to the periphery from between multiple groups of flow gaps 444. It is worth noting that the spoiler can disturb the airflow, increase the distribution area of ​​the airflow and sewage mixture between the rotating conical cover ring 43 and the fixed conical cover ring 45, and further enhance the dust removal effect.

[0045] Example 3, refer to the attached Figure 1-18 On the basis of the second embodiment, in order to realize that the connecting guide rod 42 drives the spoiler to rotate, the rotating conical cover ring 43 moves synchronously to achieve secondary centrifugation of the sewage mixture and the airflow:

[0046] The rotating conical cover ring 43 is fixedly connected to the connecting guide rod 42 via an annular connecting frame 421. The opening position of the rotating conical cover ring 43 faces the direction of the vortex airflow. A folded diffusion guide plate 432 is fixedly installed on the rotating conical cover ring 43. The two sides of the folded diffusion guide plate 432 are respectively provided with a guide slope 4321 and a retention groove surface 4322. The folded diffusion guide plate 432 has a structure with a wide inside and a narrow outside, and the guide slope 4321 faces inward.

[0047] In this embodiment, the rotating conical cover ring 43 is connected to the connecting guide rod 42 through the annular connecting frame 421. It should be noted that the reason why the guide slope 4321 here is facing the direction of the vortex airflow is to achieve the diversion effect on the airflow and sewage mixture, and the retention groove surface 4322 here is away from the side of the vortex airflow direction, which can capture the centrifugally thrown particles to achieve the retention of the particles, and through the structural design of the folded diffusion guide plate 432 with a wide inside and narrow outside, the outward flow of particles can be accelerated, and finally accumulated at the bottom of the annular outer cover 51 to avoid accumulation.

[0048] Example 4, refer to the attached Figure 1-18 Based on the third embodiment, in order to achieve the separation of the sewage mixture and the airflow under the action of centrifugal force:

[0049] The dewatering and sewage discharge unit also includes a sewage separation and dewatering component, which includes a fixed conical cover ring 45, a limiting part is provided at the connection between the fixed conical cover ring 45 and the rotating conical cover ring 43, the opening position of the fixed conical cover ring 45 is facing the direction of the vortex airflow, and a sewage filter plate 451 is fixedly installed on the outer ring surface of the fixed conical cover ring 45, and sewage grooves 4510 are evenly opened on the surface of the sewage filter plate 451; a folded retention angle plate 452 is provided on the inner side of the sewage filter plate 451, and the two ends of the folded retention angle plate 452 are fixedly connected to the two ends of the fixed conical cover ring 45 respectively. The inner side of the retention angle plate 452 is provided with a guide inclined groove 4521 that is narrow inside and wide outside; the limiting member includes a limiting ring 431, which is fixedly mounted on the outer surface of one end of the rotating conical cover ring 43. The inner surface of the fixed conical cover ring 45 is provided with a limiting groove 450, the inner surface of the limiting groove 450 is rotatably connected to the outer surface of the limiting ring 431, and the inner ring surface of the fixed conical cover ring 45 is provided with a mounting groove 4500. The interior of the mounting groove 4500 is rotatably connected to a ball 4501, and the outer surface of the ball 4501 is rotatably connected to the outer surface of the rotating conical cover ring 43.

[0050] In this embodiment, the fixed conical cover ring 45 is fixedly connected to the inner side of the annular outer cover 51. The fixed conical cover ring 45 serves as a supporting structure for multiple groups of folded retention angle plates 452. The folded retention angle plates 452 are distributed in a circular array on the inner side of the fixed conical cover ring 45. The guide chute 4521 of the folded retention angle plates 452 can block and divert the sewage mixture centrifugally thrown out from one side of the rotating conical cover ring 43, thereby preventing the airflow and sewage mixture from directly impacting the dirt filter plate 451 and causing damage. The guide chute 4521 can capture particulate matter for a second time, and the design of the guide chute 4521 being narrow inside and wide outside can accelerate the falling of particulate matter. On the other hand, the high-speed rotating retention groove surface 4322 can block and retain the logistics and mixture that are impacted in the opposite direction by the guide chute 4521, thereby facilitating the mixture to flow out through the sewage pipe.

[0051] It should be noted that the rotating conical cover ring 43 here is in a rotationally connected relationship with the inner side of the fixed conical cover ring 45. The fixed conical cover ring 45 can not only provide structural support for the high-speed rotation of the rotating conical cover ring 43, but also ensure that the rotating conical cover ring 43 rotates more smoothly through the setting of the limit parts.

[0052] Example 5, refer to the attached Figure 1-18 Based on the fourth embodiment, in order to avoid the impact and wear of the high-speed airflow and the mixture on the annular outer cover 51:

[0053] The outer ring surface of the fixed conical cover ring 45 is fixedly connected to an annular outer cover 51, which is arranged on the inner side wall of the dust collector connecting pipe 2 5. An exhaust silencer assembly is arranged between the inner ring surface of the annular outer cover 51 and the outer side of the fixed conical cover ring 45. The exhaust silencer assembly includes a sloped guide ring 52, which is fixedly installed on the inner surface of the annular outer cover 51. A noise reduction cavity is formed between the sloped guide ring 52 and the annular outer cover 51. A sound box 53 and a mounting ring 521 are arranged inside the noise reduction cavity. A mounting ring 521 is fixedly connected to one side surface of the sloped guide ring 52. Separation plates 522 are fixedly mounted on the mounting ring 521. The separation plates 522 are arranged in a circular array about the central axis of the sloped guide ring 52. A sound receiving box 53 is disposed between two sets of separation plates 522. One side of the sound receiving box 53 is fixedly connected to the outer surface of the sloped guide ring 52. A sound receiving cavity 530 is disposed between the inner side of the sloped guide ring 52 and the sloped guide ring 52. A sound absorbing arc plate 531 is fixedly mounted on the inner surface of the sound receiving cavity 530.

[0054] In this embodiment, the exhaust silencer assembly is provided to disperse the impact force of the airflow on the annular outer cover 51. Specifically, the sewage mixture dispersed by the drain trough 4510 impacts the side wall of the annular outer cover 51. At this time, the inclined slope guide ring 52 blocks the particulate matter. Combined with the sound box 53 designed in the rear noise reduction cavity, the noise generated by the eddy current can be weakened and the overall vibration can be effectively reduced, thereby improving the stability and durability of the entire system.

[0055] Example 6, refer to the attached Figure 1-18 Based on the fifth embodiment, the present invention further proposes a method for using a wet centrifugal dust removal structure for leather spraying waste gas, comprising the following steps:

[0056] Step 1: Start and connect: Connect the induced draft washing unit of the wet centrifugal dust removal structure to the leather spraying exhaust gas output pipe, start the booster pump in the induced draft washing unit to realize the delivery of the washing liquid, and start the motor 32 in the vortex dust removal unit at the same time;

[0057] Step 2: Exhaust gas dust removal: Control the start of the vortex dust removal unit to drive the vortex dispersion impeller 321 to rotate at high speed. Under the rotational power, the washing liquid is sprayed onto the surface of the vortex dispersion impeller 321 and mixed with the introduced leather spraying exhaust gas. The centrifugal action of the vortex dispersion impeller 321 and the cooperation of the guide vanes 322 are used to transport the exhaust gas into the dust collector housing 3 to achieve dust removal.

[0058] Step 3: Disturbance and secondary centrifugal dust removal: Under the action of high-speed airflow, the centrifugal diffuser assembly rotates. The airflow and sewage mixture are disturbed by the spoiler and the distribution area is increased. The spoiler cooperates with the airflow and sewage mixture to be thrown out from multiple gaps to the periphery, thus achieving secondary centrifugal dust removal.

[0059] Step 4, pollution isolation and dehydration treatment: The pollution isolation and dehydration component blocks and guides the sewage mixture thrown out by centrifugation, and uses the drainage groove 4510 on the pollution isolation filter plate 451 and the guide inclined groove 4521 with narrow inner and wide outer design of the folded retention angle plate 452 to accelerate the falling of particulate matter and capture particulate matter. The high-speed rotating components block and retain the reverse impact logistics and mixture, making it easier for the mixture to flow out through the drainage pipe. At this time, the dehydrated gas is discharged through the output end of the dust collector connecting pipe 2 5.

[0060] 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 wet centrifugal dust removal structure for leather spraying waste gas, comprising a wet centrifugal dust collector (1), characterized in that: A centrifugal dust removal mechanism is provided on the inner side of the wet centrifugal dust collector (1), and the centrifugal dust removal mechanism includes an induced draft air washing unit, a vortex dust removal unit and a dehydration and sewage discharge unit. The induced draft air washing unit includes a spray exhaust gas connecting cylinder (2) and a washing nozzle (21). The vortex dust removal unit includes a dust collector housing (3). The dehydration and sewage discharge unit includes a dust collector connecting pipe 1 (4) and a dust collector connecting pipe 2 (5). A barrier fence 2 (50) is provided at the connection between the dust collector connecting pipe 1 (4) and the dust collector connecting pipe 2 (5). The vortex dust removal unit further comprises a motor mounting housing (31), the motor mounting housing (31) being fixedly mounted on the inner side of the center of the dust collector housing (3), a motor (32) being arranged inside the motor mounting housing (31), a vortex dispersion impeller (321) being fixedly connected to the output shaft of the motor (32), and a guide vane (322) being fixedly mounted on the outer surface of one end of the motor mounting housing (31) close to the vortex dispersion impeller (321); The dewatering and sewage discharge unit further comprises a centrifugal diffusion assembly, the centrifugal diffusion assembly comprising a rotating turbofan (41) and a rotating conical cover ring (43), the rotating turbofan (41) being rotatably mounted on one end of the motor mounting housing (31) away from the vortex dispersion impeller (321), the outer surface of the rotating turbofan (41) being fixedly connected to a connecting guide rod (42), the other end of the connecting guide rod (42) being fixedly mounted to an annular connecting frame (421), the outer surface of the annular connecting frame (421) being provided with a spoiler; The rotating conical cover ring (43) is fixedly connected to the connecting guide rod (42) via an annular connecting frame (421); the opening position of the rotating conical cover ring (43) faces the direction of the vortex airflow; a folded diffusion guide plate (432) is fixedly mounted on the rotating conical cover ring (43); a guide slope surface (4321) and a retention groove surface (4322) are respectively provided on two sides of the folded diffusion guide plate (432); the folded diffusion guide plate (432) is distributed in a structure with a wide inside and a narrow outside, and the guide slope surface (4321) faces inward; The dewatering and sewage discharge unit further comprises a sewage isolation and dewatering assembly, the sewage isolation and dewatering assembly comprising a fixed conical cover ring (45), a limit piece being provided at the connection between the fixed conical cover ring (45) and the rotating conical cover ring (43), the opening position of the fixed conical cover ring (45) being oriented in the direction of the vortex airflow, a sewage isolation filter plate (451) being fixedly mounted on the outer annular surface of the fixed conical cover ring (45), and sewage discharge grooves (4510) being evenly provided on the surface of the sewage isolation filter plate (451); A folded retention angle plate (452) is provided on the inner side of the dirt-isolating filter plate (451), and the two ends of the folded retention angle plate (452) are fixedly connected to the two ends of the fixed conical cover ring (45), respectively. The inner side of the folded retention angle plate (452) is provided with a guide inclined groove (4521) that is narrow inside and wide outside.

2. The wet centrifugal dust removal structure for leather spraying exhaust gas according to claim 1, characterized in that: The spoiler comprises a connecting panel (44) and a connecting rear plate (441), the outer surface of the connecting panel (44) being fixedly connected to the inner center of the annular connecting frame (421), the inner annular surface of the connecting panel (44) being fixedly mounted with central blades (442), the central blades (442) being provided in a plurality of groups and arranged in a circular array about the central axis of the connecting guide rod (42), the inner ends of the central blades (442) being fixedly connected to the outer surface of the connecting guide rod (42).

3. A wet centrifugal dust removal structure for leather spraying exhaust gas according to claim 2, characterized in that: A gap blade (443) is fixedly connected between the connecting panel (44) and the connecting rear plate (441), and a flow gap (444) is provided between two adjacent groups of the gap blades (443).

4. The wet centrifugal dust removal structure for leather spraying exhaust gas according to claim 1, characterized in that: The outer ring surface of the fixed conical cover ring (45) is fixedly connected to an annular outer cover (51), and the annular outer cover (51) is arranged on the inner side wall of the dust collector connecting pipe (5). An exhaust silencer assembly is arranged between the inner ring surface of the annular outer cover (51) and the outer side of the fixed conical cover ring (45). The exhaust silencer assembly includes a sloped guide ring (52), and the sloped guide ring (52) is fixedly installed on the inner surface of the annular outer cover (51). The sloped guide ring (52) ) and the annular outer cover (51), a noise reduction chamber is formed, a sound box (53) and a mounting ring (521) are arranged inside the noise reduction chamber, the mounting ring (521) is fixedly connected to a side surface of the sloped guide ring (52), a partition plate (522) is fixedly mounted on the mounting ring (521), the partition plates (522) are arranged in a circular array about the central axis of the sloped guide ring (52), and a sound box (53) is arranged between two groups of the partition plates (522).

5. The wet centrifugal dust removal structure for leather spraying exhaust gas according to claim 4, characterized in that: One side of the sound receiving box (53) is fixedly connected to the outer surface of the sloped guide ring (52); a sound receiving cavity (530) is provided between the inner side of the sloped guide ring (52) and the sloped guide ring (52); and a sound absorbing arc plate (531) is fixedly mounted on the inner surface of the sound receiving cavity (530).

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