Wet cyclone dust removal device for leather spraying waste gas

Abstract

The utility model provides a wet-type cyclone dust removal device for leather spraying waste gas. The wet-type cyclone dust removal device comprises a shell, a pre-wetting cavity arranged on the lower side of the shell and a cyclone dust removal cavity arranged on the pre-wetting cavity, an air inlet is formed in the pre-wetting cavity; a first spraying pipe is arranged in the pre-wetting cavity, and the first spraying pipe is communicated with a spraying water pump through a pipeline; an impeller is arranged in the cyclone dust removal cavity; a driving motor is arranged above the cyclone dust removal cavity; the impeller is connected with an output shaft of the driving motor, more than one atomizing nozzle is arranged on the first spraying pipe, and the impeller is a centrifugal impeller. The wet dust removal and cyclone dust removal mechanism is highly combined and integrated, the advantages of wet dust removal and cyclone dust removal are reserved, the defects are overcome, and the wet dust removal and cyclone dust removal device has the characteristics of high dust removal efficiency and simple structure.

Description

Technical Field

[0001] The utility model relates to a wet cyclone dust removal device for leather spraying waste gas, and relates to the technical field of leather waste gas treatment equipment. Background Art

[0002] Currently, the leather industry utilizes a combination of wet and filtration methods to remove dust from spraying exhaust. Due to the diverse particle sizes and physical properties of particles in spraying exhaust, achieving optimal dust removal requires multi-stage wet dust removal and complex structural designs. Even with these improvements, a significant amount of particles still require filtration. Inadequate upstream dust removal significantly impacts filtration, leading to frequent filter changes and significant solid waste generation.

[0003] Cyclone dust collectors are suitable for removing non-sticky and non-fibrous dust. However, the particulate matter in leather spraying exhaust is somewhat sticky. If directly treated with a cyclone dust collector, it will soon become inoperable due to the accumulation of sticky matter on the working parts. Therefore, the industry generally believes that cyclone dust collectors are not suitable for treating leather spraying exhaust. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a wet cyclone dust removal device for leather spraying exhaust gas which highly combines the wet dust removal and cyclone dust removal mechanisms into one, retains the advantages of wet dust removal and cyclone dust removal, overcomes the disadvantages, has high dust removal efficiency and a simple structure.

[0005] In order to achieve the above technical problems, the technical solution adopted by the utility model is:

[0006] A wet cyclone dust removal device for leather spraying waste gas, comprising a housing, a pre-rewetting cavity arranged on the lower side of the housing, and a cyclone dust removal cavity arranged on the pre-rewetting cavity;

[0007] An air inlet is provided on the pre-rehumidification cavity;

[0008] A first spray pipe is provided in the pre-rehumidification cavity, and the first spray pipe is connected to a spray water pump through a pipeline;

[0009] An impeller is arranged in the cyclone dust removal cavity;

[0010] A driving motor is provided above the cyclone dust removal cavity;

[0011] The impeller is connected to the output shaft of the driving motor.

[0012] Furthermore, the first spray pipe is provided with more than one atomizing nozzle.

[0013] Furthermore, the impeller is a centrifugal impeller.

[0014] Furthermore, a circulating water tank is provided at the lower side of the pre-rewetting cavity, and the water inlet of the spray water pump is connected to the circulating water tank.

[0015] Furthermore, the impeller includes a top plate, a mounting slot is provided on the top plate, the output shaft of the drive motor and the mounting slot are matched, and blades are fixedly provided on the lower side of the top plate.

[0016] Furthermore, a guide cover is provided on the lower side of the blade.

[0017] Furthermore, the shape of the blade is a trapezoid that is larger at the top and smaller at the bottom.

[0018] Furthermore, a packing layer, a spray chamber, a filter layer, an activated carbon adsorption chamber and an exhaust outlet are sequentially arranged above the cyclone dust removal chamber.

[0019] Furthermore, a second spray pipe is provided in the spray chamber, an atomizing nozzle is provided on the second spray pipe, and the second spray pipe is connected to a spray water pump through a pipeline.

[0020] Furthermore, an inspection port is provided on the cyclone dust removal cavity.

[0021] The beneficial effects of adopting the above technical solution are:

[0022] The utility model is aimed at the characteristics that the particulate matter in the leather spraying waste gas has a certain viscosity and is difficult to rewet. It combines the principles of wet dust removal and cyclone dust removal. Under working conditions, the centrifugal impeller can form an induced wind effect, and the waste gas and spray water in the pre-rehumidifier cavity are simultaneously axially input into the cyclone dust removal cavity. The high-speed rotating blades fully mix the particulate matter and water droplets, and the particulate matter is wetted and dissolved at the same time, thereby greatly reducing the viscosity of the particulate matter; at this time, the air flow containing particulate matter and water rotates, and the particulate matter and water are separated from the air flow by centrifugal force, and are captured on the wall of the device, and flow into the circulating water under the action of gravity.

[0023] The upper parts of both sides of the box of the utility model are air outlet holes to form a bypass structure. The dust-containing exhaust gas after preliminary treatment passes through the filler layer, spray chamber, filter screen, activated carbon adsorption chamber in turn, and is discharged through the exhaust outlet after subsequent treatment. Since the dust-containing exhaust gas is effectively treated in the pre-rehumidification chamber and the cyclone dust removal chamber, the preliminary dust removal effect is guaranteed, the pressure of subsequent filtering and dust removal is effectively reduced, the frequency of filter replacement is reduced, the use cost is reduced, and the solid waste generated is reduced.

[0024] A circulating water tank is provided at the lower side of the pre-rewetting cavity of the utility model. The circulating water tank is used to collect circulating water at the bottom. The exhaust gas brought in by the lower induced wind goes up and meets the spray water at the upper part. Under the action of the induced wind, the exhaust gas enters the cyclone dust removal cavity at the same time. The spray water is sprayed by multiple evenly distributed atomizing nozzles, which has a good atomization effect on the water, and the water volume can be adjusted according to the concentration of particulate matter in the exhaust gas and the difficulty of wetting.

[0025] A centrifugal impeller is arranged in the cyclone dust removal chamber of the utility model, and a driving motor drives the centrifugal impeller to rotate. The diameter of the centrifugal impeller is 600~1000mm, and the rotation speed is generally controlled at 1000~1500 revolutions per minute. The wind pressure is large and the air volume is small. It has good coordination with the whole device and can treat exhaust gas at a standard flow rate of 15,000~25,000 cubic meters per hour. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of the utility model

[0027] Figure 2 It is a structural diagram of the utility model;

[0028] Figure 3 This is a schematic diagram of the impeller structure of the utility model;

[0029] Among them, 1. Shell, 2. Pre-rewetting chamber, 201. First spray pipe, 202. Spray water pump, 3. Cyclone dust removal chamber, 301. Impeller, 3011. Top plate, 3012. Mounting slot, 3013. Blade, 3014. Conical air guide cover, 302. Drive motor, 303. Inspection port, 4. Air inlet, 5. Packing layer, 6. Spray chamber, 601. Second spray pipe, 7. Activated carbon adsorption chamber, 8. Exhaust outlet, 9. Circulating water tank, 10. Filter layer. DETAILED DESCRIPTION

[0030] The present invention will be further described below with reference to the accompanying drawings.

[0031] As attached Figure 1-3As shown, this embodiment provides a wet cyclone dust removal device for leather spraying exhaust gas, which includes a shell 1, a pre-rewetting cavity 2 arranged on the lower side of the shell 1, and a cyclone dust removal cavity 3 arranged on the pre-rewetting cavity 2; the cyclone dust removal cavity 3 is arranged on the upper side of the pre-rewetting cavity 2, and an air inlet 4 is arranged on the pre-rewetting cavity 2, and the air inlet 4 is two or more; a first spray pipe 201 is arranged in the pre-rewetting cavity 2, and the first spray pipe 201 is connected to the spray water pump 202 through a pipeline; a circulating water tank 9 is arranged on the lower side of the pre-rewetting cavity 2, and the water inlet of the spray water pump 202 is connected to the circulating water tank 9. More than one atomizing nozzle is provided on the first spray pipe 201. The exhaust gas coming in from the lower induced wind goes up and meets the upper spray water. Under the action of the induced wind, it enters the cyclone dust collector cavity at the same time. The spray water is sprayed by multiple evenly distributed atomizing nozzles, which has a good atomization effect on the water, and the amount of water can be adjusted according to the concentration of particulate matter in the exhaust gas and the difficulty of wetting. The rotor can form an induced wind effect, and the exhaust gas and spray water in the pre-rehumidifier cavity 2 are axially input into the cyclone dust collector cavity 3 at the same time. The high-speed rotating blades fully mix the particulate matter and water droplets, and the particulate matter is wetted and dissolved at the same time, thereby greatly reducing the viscosity of the particulate matter.

[0032] An impeller 301 is arranged in the cyclone dust removal chamber 3. The impeller 301 is a centrifugal impeller. The diameter of the impeller 301 is 600~1000mm, and its rotation speed is generally controlled at 1000~1500 rpm. It has high wind pressure and small air volume, and is well matched with the entire set of equipment; a drive motor 302 is arranged above the cyclone dust removal chamber 3; the impeller 301 is connected to the output shaft of the drive motor 302. The impeller 301 includes a top plate 3011, on which a mounting slot 3012 is provided. The output shaft of the drive motor 302 is key-connected with the mounting slot 3012 so that the drive motor 302 drives the impeller 301 to rotate. A blade 3013 is fixedly provided on the lower side of the top plate 3011. The shape of the blade 3013 is a trapezoid with a larger upper portion and a smaller lower portion. A guide cover 3014 is provided on the lower side of the blade 3013. The guide cover 3014 is conical in shape. On the one hand, it plays a role in gathering exhaust gas and guiding flow, and on the other hand, it also plays a role in improving the overall welding strength of the impeller.

[0033] A packing layer 5, a spray chamber 6, a filter layer 10, an activated carbon adsorption chamber 7 and an exhaust outlet 8 are sequentially arranged above the cyclone dust removal chamber 3. Activated carbon adsorption material is arranged in the activated carbon adsorption chamber 7, and the filter layer 10 plays a filtering role. A second spray pipe 601 is arranged in the spray chamber 6, and an atomizing nozzle is arranged on the second spray pipe 601. The second spray pipe 601 is connected to the spray water pump 202 through a pipeline. The upper parts of both sides of the box body of the cyclone dust removal chamber 3 are air outlets to form a bypass structure. The dust-containing exhaust gas after preliminary treatment passes through the packing layer 5, the spray chamber 6, the filter layer 10, and the activated carbon adsorption chamber 7 in turn, and is discharged through the exhaust outlet 8 after subsequent treatment. Due to the effective treatment of the dust-containing exhaust gas in the pre-rewetting chamber and the cyclone dust removal chamber, the initial dust removal effect is guaranteed, the pressure of subsequent filtering and dust removal is effectively reduced, the frequency of filter replacement is reduced, and the use cost is reduced.

[0034] The cyclone dust removal chamber 3 is provided with an inspection port 303 to facilitate inspection, cleaning and component replacement of the equipment.

[0035] The working principle of this utility model is described as follows:

[0036] The utility model is provided with a centrifugal impeller in the cyclone dust removal chamber, and the driving motor drives the centrifugal impeller to rotate. The diameter of the centrifugal impeller is 600~1000mm, and the speed is generally controlled at 1000~1500 rpm. The wind pressure is large and the air volume is small. It has good coordination with the whole set of devices and can process the exhaust gas at a standard flow rate of 15000~25000 cubic meters / hour. It is mainly aimed at the characteristics that the particles in the leather spraying exhaust have a certain viscosity and are difficult to rewet. It combines wet dust removal and cyclone dust removal. Dust removal mechanism: In operation, the rotor can induce draft, and the exhaust gas and spray water in the pre-rehumidifier chamber 2 are simultaneously axially fed into the cyclone dust removal chamber 3. The high-speed rotating blades 3013 thoroughly mix the particles with the water droplets, wetting and dissolving the particles, thereby significantly reducing the viscosity of the particles. At this time, the airflow containing particles and water rotates, and the particles and water are separated from the airflow by centrifugal force and captured on the wall. Under the action of gravity, they flow into the circulating water tank 9. The upper part of the cyclone dust removal chamber 3 has air outlets on both sides of the housing as a bypass structure. After preliminary treatment, the dust-laden exhaust gas then passes upward through the packing layer 5, the spray chamber 6, the filter layer 10, and the activated carbon adsorption chamber 7 in sequence. After subsequent treatment, it is discharged through the exhaust outlet 8. Due to the effective treatment of the dust-laden exhaust gas in the pre-rehumidifier chamber 2 and the cyclone dust removal chamber 3, the initial dust removal effect is guaranteed, effectively reducing the pressure of subsequent filtration and dust removal, reducing the frequency of filter replacement, reducing usage costs, and reducing the formation of solid waste.

[0037] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A wet cyclone dust removal device for leather spraying waste gas, characterized in that: It comprises a shell (1), a pre-rehumidification cavity (2) arranged on the lower side of the shell (1), and a cyclone dust removal cavity (3) arranged on the pre-rehumidification cavity (2); An air inlet (4) is provided on the pre-rehumidification cavity (2); A first spray pipe (201) is provided in the pre-rewetting cavity (2), and the first spray pipe (201) is connected to a spray water pump (202) through a pipeline; An impeller (301) is provided in the cyclone dust removal cavity (3); A driving motor (302) is provided above the cyclone dust removal cavity (3); The impeller (301) is connected to the output shaft of the drive motor (302).

2. The wet cyclone dust removal device for leather spraying waste gas according to claim 1, characterized in that: One or more atomizing nozzles are provided on the first spray pipe (201).

3. The wet cyclone dust removal device for leather spraying waste gas according to claim 1, characterized in that: The impeller (301) is a centrifugal impeller.

4. The wet cyclone dust removal device for leather spraying waste gas according to claim 1, characterized in that: A circulating water tank (9) is provided on the lower side of the pre-rewetting cavity (2), and the water inlet of the spray water pump (202) is connected to the circulating water tank (9).

5. The wet cyclone dust removal device for leather spraying waste gas according to claim 1, characterized in that: The impeller (301) comprises a top plate (3011), a mounting slot (3012) is provided on the top plate (3011), an output shaft of the drive motor (302) and the mounting slot (3012) are arranged in coordination, and blades (3013) are fixedly provided on the lower side of the top plate (3011).

6. The wet cyclone dust removal device for leather spraying waste gas according to claim 5, characterized in that: A flow guide cover (3014) is provided on the lower side of the blade (3013).

7. The wet cyclone dust removal device for leather spraying waste gas according to claim 5, characterized in that: The shape of the blade (3013) is a trapezoid that is larger at the top and smaller at the bottom.

8. The wet cyclone dust removal device for leather spraying waste gas according to claim 1, characterized in that: A packing layer (5), a spray chamber (6), a filter layer (10), an activated carbon adsorption chamber (7), and an exhaust outlet (8) are sequentially arranged above the cyclone dust removal chamber (3).

9. The wet cyclone dust removal device for leather spraying waste gas according to claim 8, characterized in that: A second spray pipe (601) is provided in the spray chamber (6), an atomizing nozzle is provided on the second spray pipe (601), and the second spray pipe (601) is connected to the spray water pump (202) through a pipeline.

10. The wet cyclone dust removal device for leather spraying waste gas according to claim 1, characterized in that: An inspection port (303) is provided on the cyclone dust removal cavity (3).

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