Wet type centrifugal dust removal structure for leather spraying waste gas

Abstract

The invention relates to the technical field of centrifugal dust removal, in particular to a wet-type centrifugal dust removal structure for leather spraying waste gas, which comprises a wet-type centrifugal dust remover, and a centrifugal dust removal mechanism is arranged on the inner side of the wet-type centrifugal dust remover. The air inducing and gas washing unit is arranged at an air inlet of the wet type centrifugal dust remover, leather spraying waste gas is introduced and washed, the waste gas and washing liquid are centrifugally guided in cooperation with the vortex dust removal unit, and a certain centrifugal force is generated again through joint combination of the centrifugal diffusion assembly and the dirt separation and dehydration assembly; according to the wet-type centrifugal dust collector, particles carried in airflow can be thrown to the rear wall of the wet-type centrifugal dust collector more easily, the dust collection efficiency can be improved, escape of the particles is reduced, gas disturbance is enhanced, more comprehensive capturing and separation of the particles are achieved, meanwhile, impact force on the fixed conical cover ring can be dispersed, damage caused by direct washing of the airflow is reduced, and the service life of the wet-type centrifugal dust collector is prolonged. The structural stability is enhanced.

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 also 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. After 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 scrubber with publication number CN214680873U, which belongs to the dust removal field; 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 directly 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 effects in the prior art, 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 dust removal structure easily causes the particulate matter in the exhaust gas to accumulate on the cyclone and the motor, resulting in difficulties in the discharge of sewage and particulate matter; and the airflow is directly discharged to the air outlet due to the centrifugal force, which not only easily causes the escape of particulate matter and water molecules, but also causes an 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 the particulate matter in the exhaust gas to accumulate on the cyclone and the 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 the problem of impact on the structure of the dust collector itself. Summary of the invention

[0007] In view of the deficiencies in the prior art, the object 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 air washing unit, a vortex dust removal unit and a dehydration and sewage discharge unit, the induced draft air washing unit includes a spraying exhaust gas connecting tube and an air 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 assembly, 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. A connecting guide rod is fixedly connected to the outer surface of the rotating turbofan, and an annular connecting frame is fixedly mounted on the other end of the connecting guide rod.

[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 inner side of the center of the annular connecting frame, and a central blade is fixedly installed on the inner annular surface of the connecting panel. 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, a gap blade is fixedly connected between the connection panel and the connection rear plate, and a flow gap is arranged 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, and 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 of being wide inside and 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, and 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 opened 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, the two ends of the folded retention angle plate are respectively fixedly connected to the two ends of the fixed conical cover ring, 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 receiving 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. An induced draft washing unit is arranged at the air inlet of the wet centrifugal dust collector to achieve the introduction and washing of leather spraying exhaust gas. In conjunction with the vortex dust removal unit, the exhaust gas and washing liquid are centrifugally guided, and a centrifugal diffusion component and a dirt isolation and dehydration component are combined 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 achieve more comprehensive capture and separation of particulate matter. At the same time, it can disperse the impact force on the fixed conical cover ring, reduce damage caused by direct scouring of the airflow, and enhance the stability of the structure. It not only enhances the dust removal effect and improves the efficiency of exhaust gas treatment, but also effectively reduces noise pollution, ensuring 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 It is a schematic diagram of the internal structure of the wet centrifugal dust collector of the present invention;

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

[0026] Figure 7 It is a schematic diagram of the connection structure between the rotary turbofan and the centrifugal diffusion 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] Fig. 9 It is a schematic diagram of the connection structure between the spoiler and the rotating conical cover ring of the present invention;

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

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

[0031] Fig.12 It 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] Fig.13 For the present invention Fig.12 A schematic diagram of the enlarged structure at B;

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

[0034] Fig.15 It is a schematic diagram of a partial cross-sectional structure of an exhaust muffler assembly of the present invention;

[0035] Fig.16 For the present invention Fig.15 A schematic diagram of the enlarged structure at C;

[0036] Fig.17 It is a schematic diagram of the disassembled structure of the sloped guide ring and the sound receiving box of the present invention;

[0037] Fig.18 For the present invention Fig.17 Enlarged structural diagram at D.

[0038] In the figure: 1. Wet centrifugal dust collector; 2. Spraying exhaust gas connection tube; 20. Barrier fence 1; 21. Washing 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. Barrier 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. Limiting 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 make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention, and are not used 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, see Figure 1-18The present invention provides a technical solution: a wet centrifugal dust removal structure for leather spraying waste gas, comprising a wet centrifugal dust collector 1, a centrifugal dust removal mechanism is arranged inside the wet centrifugal dust collector 1, the centrifugal dust removal mechanism comprises an induced draft air washing unit, a vortex dust removal unit and a dehydration and sewage discharge unit, the induced draft air washing unit comprises a spraying waste gas connecting tube 2 and a washing nozzle 21, the vortex dust removal unit comprises a dust collector housing 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 The connection of the dust collector connecting pipe 2 5 is provided with a blocking fence 2 50; the input port of the spray exhaust gas connecting tube 2 is provided with a blocking fence 20; the vortex dust removal unit also includes a motor mounting housing 31, the motor mounting housing 31 is fixedly mounted on the inner side of the center of the dust collector housing 3, a motor 32 is arranged 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 close to 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 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 blades 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] Embodiment 2, refer to the attached Figure 1-18 On the basis of Example 1, in order to achieve the disturbance of the airflow and sewage mixture after the leather spraying waste 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 with an annular connecting frame 421; a spoiler is arranged on the outer surface of the annular connecting frame 421, and the spoiler includes a connecting panel 44 and a connecting rear plate 441. The outer surface of the connecting panel 44 is fixedly connected to the inner side of the center of the annular connecting frame 421, and a central blade 442 is fixedly mounted on the inner annular surface of the connecting panel 44. The central blade 442 is provided with multiple groups and is in a circular array about the central axis of the connecting guide rod 42, and 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 arranged 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 airflow flows toward the output end position of the dust collector housing 3. Under the action of the high-speed airflow, 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 airflow undergoes secondary centrifugal dust removal. Specifically, when the connecting guide rod 42 drives the rotating conical cover ring 43 to rotate, the airflow and sewage mixture are centrifugally thrown toward the guide slope 4321 of the folded diffusion guide plate 432. At this time, the airflow and sewage mixture are guided toward the rotating conical cover ring 43 away from the opening position under the centrifugal action and the guide 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, with the cooperation of 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] Embodiment 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, so as to realize the 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 through the 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 is distributed in a structure that is wide inside and 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 particles thrown out by the centrifuge to achieve the retention of the particles, and through the structural design of the folded diffusion guide plate 432 with a wide inside and a narrow outside, the outward flow of the particles can be accelerated, and finally accumulated at the bottom of the annular outer cover 51 to avoid accumulation.

[0048] Embodiment 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 dehydration component, which includes a fixed conical cover ring 45, a limiting member is arranged 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 faces the direction of the vortex airflow, and a sewage separation filter plate 451 is fixedly installed on the outer ring surface of the fixed conical cover ring 45, and sewage discharge grooves 4510 are evenly opened on the surface of the sewage separation filter plate 451; a folded retention angle plate 452 is arranged on the inner side of the sewage separation filter plate 451, and the two ends of the folded retention angle plate 452 are respectively fixedly connected to the two ends of the fixed conical cover ring 45, and the folded The inner side of the retention angle plate 452 is provided with a guide inclined groove 4521 which 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; a limiting groove 450 is provided on the inner surface of the fixed conical cover ring 45, and the inner surface of the limiting groove 450 is rotatably connected to the outer surface of the limiting ring 431; a mounting groove 4500 is provided on the inner ring surface of the fixed conical cover ring 45, and a ball 4501 is rotatably connected inside the mounting groove 4500, 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, and the fixed conical cover ring 45 serves as a supporting structure for multiple groups of folded retention angle plates 452, wherein the folded retention angle plates 452 are distributed in a circular array on the inner side of the fixed conical cover ring 45, and the guide chute 4521 of the folded retention angle plates 452 is designed to block and guide the sewage mixture centrifugally thrown out of one side of the rotating conical cover ring 43, so as to prevent the airflow and the sewage mixture from directly impacting the dirt filter plate 451 and causing damage, and the particles can be captured for a second time through the guide chute 4521, and the design of the guide chute 4521 being narrow inside and wide outside can accelerate the falling of the particles, and on the other hand, the retention groove surface 4322 rotating at a high speed can block and retain the logistics and mixture impacted in the opposite direction by the guide chute 4521, so as to facilitate the mixture to flow out through the sewage pipe;

[0051] It should be noted that the rotating conical cover ring 43 is rotationally connected to 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 limiter.

[0052] Embodiment 5, refer to the attached Figure 1-18 On the basis of 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 with an annular outer cover 51, which is arranged on the inner side wall of the dust collector connecting pipe 25. 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. The mounting ring 521 is fixedly connected to one side surface of the sloped guide ring 52, and a partition plate 522 is fixedly installed 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 receiving box 53 is arranged between two groups of partition plates 522; one side of the sound receiving box 53 is fixedly connected to the outer surface of the sloped guide ring 52, and a sound receiving cavity 530 is arranged between the inner side of the sloped guide ring 52 and the sloped guide ring 52, and a sound silencing arc plate 531 is fixedly installed 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 sewage 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, and the sound box 53 designed in the rear noise reduction cavity can weaken the noise generated by the eddy current and effectively reduce the overall vibration, thereby improving the stability and durability of the entire system.

[0055] Embodiment 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 waste gas output pipeline, 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 treatment: Control the start of the vortex dust removal unit to drive the vortex dispersion impeller 321 to rotate at a 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 waste gas. The centrifugal action of the vortex dispersion impeller 321 and the cooperation of the guide blades 322 are used to transport the waste gas to the inside of the dust collector housing 3 to achieve dust removal.

[0058] Step 3, turbulence and secondary centrifugal dust removal: under the action of high-speed airflow, the centrifugal diffusion component rotates, and the airflow and sewage mixture are disturbed and the distribution area is increased under the action of the spoiler. Through the cooperation of the spoiler, the airflow and sewage mixture are thrown out from multiple groups of gaps to the periphery, realizing 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 the centrifuge, and utilizes the drainage groove 4510 on the pollution isolation filter plate 451 and the guide inclined groove 4521 with a narrow inner and wide outer design of the folded retention angle plate 452 to accelerate the falling of particles and capture particles. The high-speed rotating components block and retain the reverse impact of the 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] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present 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 arranged 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 waste gas connecting tube (2) and a washing nozzle (21), the vortex dust removal unit includes a dust collector shell (3), and the dehydration and sewage discharge unit includes a dust collector connecting pipe 1 (4) and a dust collector connecting pipe 2 (5). A blocking fence 2 (50) is arranged at the connection between the dust collector connecting pipe 1 (4) and the dust collector connecting pipe 2 (5).

2. A wet centrifugal dust removal structure for leather spraying waste gas according to claim 1, characterized in that: The vortex dust removal unit also includes a motor mounting housing (31), the motor mounting housing (31) is fixedly mounted on the inner side of the center of the dust collector housing (3), a motor (32) is arranged 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) close to the vortex dispersion impeller (321).

3. A wet centrifugal dust removal structure for leather spraying waste gas according to claim 1, characterized in that: The dewatering 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).

4. A wet centrifugal dust removal structure for leather spraying waste gas according to claim 3, characterized in that: The outer surface of the annular connecting frame (421) is provided with a spoiler, and the spoiler includes a connecting panel (44) and a connecting rear plate (441). The outer surface of the connecting panel (44) is fixedly connected to the inner side of the center of the annular connecting frame (421). The inner annular surface of the connecting panel (44) is fixedly mounted with a central blade (442). The central blade (442) is provided with a plurality of groups and is arranged in a circular array about the central axis of the connecting guide rod (42). The inner end of the central blade (442) is fixedly connected to the outer surface of the connecting guide rod (42).

5. A wet centrifugal dust removal structure for leather spraying waste gas according to claim 4, characterized in that: A gap blade (443) is fixedly connected between the connection panel (44) and the connection rear plate (441), and a flow gap (444) is provided between two adjacent groups of the gap blades (443).

6. A wet centrifugal dust removal structure for leather spraying waste gas according to claim 3, characterized in that: 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); guide slope surfaces (4321) and retention groove surfaces (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 that is wide inside and narrow outside, and the guide slope surface (4321) faces inward.

7. A wet centrifugal dust removal structure for leather spraying waste gas according to claim 6, characterized in that: The dewatering and sewage discharge unit also includes a sewage isolation and dewatering component, which includes a fixed conical cover ring (45). A limiting member 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) faces the direction of the vortex airflow. A sewage isolation filter plate (451) is fixedly installed on the outer annular surface of the fixed conical cover ring (45), and sewage discharge grooves (4510) are evenly opened on the surface of the sewage isolation filter plate (451).

8. A wet centrifugal dust removal structure for leather spraying waste gas according to claim 7, characterized in that: 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 respectively fixedly connected to the two ends of the fixed conical cover ring (45), and the inner side of the folded retention angle plate (452) is provided with a guide inclined groove (4521) which is narrow inside and wide outside.

9. A wet centrifugal dust removal structure for leather spraying waste gas according to claim 7, characterized in that: The outer ring surface of the fixed conical cover ring (45) is fixedly connected with 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 component 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 component includes a sloped flow guide ring (52), and the sloped flow guide ring (52) is fixedly installed on the inner surface of the annular outer cover (51). The sloped flow guide ring (52) ) and the annular outer cover (51), a noise reduction chamber is formed therebetween, 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).

10. A wet centrifugal dust removal structure for leather spraying waste gas according to claim 9, 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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