Electroplating waste gas spray tower

Abstract

The utility model relates to the technical field of electroplating waste gas treatment, and discloses an electroplating waste gas spray tower which comprises a tower body, a liquid discharge pipe is mounted at the outer part, close to the bottom end, of the tower body, a cleaning mechanism is mounted at the inner part, close to the bottom end, of the tower body, a spray mechanism is mounted at the inner part, close to the top end, of the tower body, and an exhaust pipe is mounted at the top of the tower body in a penetrating manner. A filler layer is arranged close to the middle of the interior of the tower body, a demisting layer is arranged close to the top end of the interior of the tower body, the cleaning mechanism comprises an air inlet pipe, a rotating rod is movably installed in the air inlet pipe in a penetrating mode, a first motor is installed at the outer end of the rotating rod, and two sets of spiral blades are installed on the periphery of the rotating rod and located in the air inlet pipe. Through a spiral blade and a slag discharging pipe, impurities adhering to the interior of the air inlet pipe can be scraped away, and blockage caused by waste slag accumulation is reduced; and through the rotating seat and the guide pipe, the spraying liquid can be uniformly sprayed into the filler layer, so that the waste gas is in full contact with the spraying liquid.

Description

Technical Field

[0001] This utility model relates to the field of electroplating waste gas treatment technology, specifically an electroplating waste gas spray tower. Background Technology

[0002] The electroplating process generates cyanide-containing waste gas and chromium-containing waste gas, as well as acid mist and alkaline fumes during pickling. These waste gases not only affect the working environment of the production workshop but also the surrounding environment, causing air pollution. The waste residue generated also pollutes the environment. Therefore, it is necessary to treat these waste gases.

[0003] The announcement number is CN219376660U, which provides an electroplating waste gas treatment tower, including: an electroplating waste gas treatment tower body, an air inlet pipe installed at the bottom of one side of the electroplating waste gas treatment tower body, and an air outlet pipe installed at the top of the other side of the electroplating waste gas treatment tower body.

[0004] The aforementioned electroplating waste gas tower can effectively prevent backflow of the treatment liquid. However, during the air intake process, impurities in the waste gas are prone to adhere to and accumulate on the inner wall of the air intake pipe, making it inconvenient to automatically scrape them off for cleaning. Furthermore, the spray position of the spray liquid is relatively fixed, making it difficult to rotate for uniform spraying. Utility Model Content

[0005] The purpose of this utility model is to provide an electroplating waste gas spray tower to solve the technical problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An electroplating waste gas scrubbing tower includes a tower body, a drain pipe installed at the bottom of the tower body, a cleaning mechanism installed at the bottom of the tower body, a scrubbing mechanism installed at the top of the tower body, an exhaust pipe installed through the top of the tower body, a packing layer arranged in the middle of the tower body, and a demisting layer arranged at the top of the tower body. The cleaning mechanism includes an air inlet pipe, a rotating rod movably installed inside the air inlet pipe, a first motor installed at the outer end of the rotating rod, two sets of spiral blades installed around the rotating rod and inside the air inlet pipe, several through holes opened on the surface of the spiral blades, a water baffle installed at the top of the air inlet pipe, and a slag discharge pipe vertically installed at one end of the bottom of the air inlet pipe, with a sealing cap connected to the bottom end of the slag discharge pipe.

[0008] Preferably, the rotating rod is fixedly connected to the output shaft of the first motor, and the air inlet pipe is horizontally installed inside the tower body near the bottom.

[0009] Preferably, the two sets of spiral blades are arranged in opposite spiral directions, and several through holes are evenly opened on the surface of the spiral blades.

[0010] Preferably, a gap is provided between the bottom of the water baffle and the top of the air inlet pipe, and the sealing cover is threadedly connected to the bottom of the slag discharge pipe.

[0011] Preferably, the spraying mechanism includes a fixed frame and an inlet pipe. The fixed frame and the inlet pipe are both fixedly installed inside the tower body near the top. A rotating seat is movably installed inside the fixed frame near the bottom. A set of spraying frames is fixedly installed at the bottom of the rotating seat. A guide tube is installed on the top of the rotating seat and through the top of the fixed frame. A second motor is installed on the outside of the tower body near the top. The inner end of the output shaft of the second motor and the outside of the guide tube are both equipped with conical teeth.

[0012] Preferably, the tip of the conduit extends movably through the interior of the inlet pipe, and the two conical teeth are connected in an interlocking manner.

[0013] Preferably, the bottom ends of the rotating seat and the conduit are movably rotatable inside the fixed frame, the interiors of the rotating seat, the conduit and the inlet pipe are interconnected, and the rotating seat and the conduit are fixedly connected.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1) This spray tower, by setting up a cleaning mechanism, has a spiral blade rotating inside the air inlet pipe. The spiral blade can scrape off impurities adhering to the inside of the air inlet pipe, reducing blockage caused by the accumulation of waste residue. The sealing cover is connected to the bottom of the slag discharge pipe through the slag discharge pipe, which facilitates the regular discharge of waste residue.

[0016] 2) This spray tower, by setting up a spray mechanism, the second motor drives the bevel gear to rotate, so that the rotating seat and spray frame can rotate, so that the spray liquid can be evenly sprayed into the packing layer, so that the exhaust gas and the spray liquid can be fully contacted. Through the movable connection of the conduit and the liquid inlet pipe, the spray liquid is continuously transported during the rotation process. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an electroplating waste gas spray tower according to an embodiment of the present invention.

[0018] Figure 2 This is an overall internal front view of an embodiment of this utility model.

[0019] Figure 3 This is a schematic diagram of the internal structure of the cleaning mechanism in an embodiment of this utility model.

[0020] Figure 4 This is a schematic diagram of the spraying mechanism in an embodiment of the present invention.

[0021] In the diagram: 1. Tower body; 2. Drain pipe; 3. Cleaning mechanism; 4. Spraying mechanism; 5. Exhaust pipe; 6. Packing layer; 7. Demisting layer; 8. Air inlet pipe; 9. Rotating rod; 10. First motor; 11. Spiral blade; 12. Through hole; 13. Water baffle; 14. Slag discharge pipe; 15. Sealing cover; 16. Fixing frame; 17. Drain pipe; 18. Rotating seat; 19. Spraying frame; 20. Guide tube; 21. Second motor; 22. Conical teeth. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0023] Combination Figures 1-4 An electroplating waste gas scrubbing tower includes a tower body 1, a drain pipe 2 installed at the bottom of the exterior of the tower body 1, a cleaning mechanism 3 installed at the bottom of the interior of the tower body 1, a scrubbing mechanism 4 installed at the top of the interior of the tower body 1, an exhaust pipe 5 installed through the top of the tower body 1, a packing layer 6 provided in the middle of the interior of the tower body 1, and a demisting layer 7 provided in the top of the interior of the tower body 1.

[0024] See Figure 3 Furthermore, the cleaning mechanism 3 includes an air intake pipe 8, a rotating rod 9 is movably installed inside the air intake pipe 8, a first motor 10 is installed at the outer end of the rotating rod 9, two sets of spiral blades 11 are installed around the rotating rod 9 and inside the air intake pipe 8, several through holes 12 are opened through the surface of the spiral blades 11, a water baffle 13 is installed at the top of the air intake pipe 8, and a slag discharge pipe 14 is vertically installed at one end of the bottom of the air intake pipe 8, with a sealing cap 15 connected to the bottom end of the slag discharge pipe 14.

[0025] The rotating rod 9 is fixedly connected to the output shaft of the first motor 10. The air inlet pipe 8 is horizontally installed inside the tower body 1 near the bottom. The rotating rod 9 is driven to rotate by the first motor 10. The two ends of the air inlet pipe 8 are used to connect the exhaust gas pipe and the inside of the tower body 1, respectively.

[0026] The two sets of spiral blades 11 are arranged in opposite spiral directions. Several through holes 12 are evenly opened on the surface of the spiral blades 11. The center point of symmetry of the two sets of spiral blades 11 is located at the top of the slag discharge pipe 14. The rotating rod 9 drives the two sets of spiral blades 11 to rotate, and the impurities adhering to the inner wall of the air intake pipe 8 are scraped off through the spiral blades 11.

[0027] A gap is provided between the bottom of the water baffle 13 and the top of the air inlet pipe 8. The sealing cover 15 is threadedly connected to the bottom of the slag discharge pipe 14. The water baffle 13 is used to prevent the spray liquid from entering the air inlet pipe 8, and the sealing cover 15 is used to close or open the slag discharge pipe 14.

[0028] Specifically, the first motor 10 drives the rotating rod 9 to rotate, causing the two sets of spiral blades 11 to rotate and scrape off the impurities on the inner wall of the air intake pipe 8. The impurities are then transported to the slag discharge pipe 14 through the spiral blades 11. The sealing cover 15 opens or closes the bottom end of the slag discharge pipe 14 to facilitate the periodic discharge of impurities. Example 2

[0029] See Figure 4 Furthermore, based on Embodiment 1, the spraying mechanism 4 includes a fixed frame 16 and an inlet pipe 17. Both the fixed frame 16 and the inlet pipe 17 are fixedly installed inside the tower body 1 near the top. A rotating seat 18 is movably installed inside the fixed frame 16 near the bottom. A set of spraying frames 19 is fixedly installed at the bottom of the rotating seat 18. A conduit 20 is installed on the top of the rotating seat 18 and extends through the top of the fixed frame 16. A second motor 21 is installed on the outside of the tower body 1 near the top. Both the inner end of the output shaft of the second motor 21 and the outside of the conduit 20 are equipped with bevel teeth 22.

[0030] The top end of the conduit 20 moves through the inside of the inlet pipe 17. The two conical teeth 22 are meshed together. The outer end of the inlet pipe 17 is used to connect to the spray pipe. Through the meshing of the conical teeth 22, the second motor 21 drives the rotating seat 18 to rotate.

[0031] The bottom ends of the rotating seat 18 and the conduit 20 are both movably rotatable inside the fixed frame 16. The interiors of the rotating seat 18, the conduit 20 and the liquid inlet pipe 17 are interconnected. The rotating seat 18 and the conduit 20 are fixedly connected. The rotating seat 18 drives the spray frame 19 to rotate. The top end of the conduit 20 is movably connected to and sealed with the interior of the liquid inlet pipe 17.

[0032] Specifically, the second motor 21 drives the corresponding bevel gear 22 to rotate, and the meshing of the bevel gear 22 drives the rotating seat 18 and the spray frame 19 to rotate. The conduit 20 is movably connected to the liquid inlet pipe 17 to continuously deliver the spray liquid, so as to facilitate the uniform spraying of the spray liquid.

[0033] In actual operation, the outer end of the air inlet pipe 8 is connected to the exhaust gas pipe, the inner end of the air inlet pipe 8 is located inside the tower body 1, the outer end of the liquid inlet pipe 17 is used to connect to the external spray liquid pipe, the packing layer 6 is used for full gas-liquid contact, the demisting layer 7 is used to remove water vapor from the gas, and the spray liquid is sprayed out through the spray frame 19 to treat the electroplating exhaust gas.

[0034] Cleaning mechanism 3: exhaust gas enters the tower body 1 through the air inlet pipe 8, and the spray liquid flows outward through the water baffle 13. Since the air inlet pipe 8 is located inside the tower body 1 and is cooled, dry impurities such as metal dust and solid particles in the exhaust gas adhere to the inner wall of the air inlet pipe 8. By starting the first motor 10, the first motor 10 drives the rotating rod 9 to rotate, causing the two sets of spiral blades 11 to rotate and scrape off the impurities on the inner wall of the air inlet pipe 8 and transport them to the slag discharge pipe 14. The bottom end of the slag discharge pipe 14 is opened by rotating the sealing cover 15 to periodically discharge the impurities.

[0035] During spraying, the spray liquid is delivered to the inside of the conduit 20 through the inlet pipe 17, and then delivered to the spray frame 19 through the rotating seat 18 and sprayed out through the nozzle. By starting the second motor 21, the second motor 21 drives the corresponding bevel gear 22 to rotate. The meshing of the bevel gear 22 drives the rotating seat 18 to rotate, and drives the spray frame 19 to rotate. At the same time, the top of the conduit 20 is located inside the inlet pipe 17 and rotates to maintain a seal, so that the spray liquid is sprayed evenly.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electroplating waste gas scrubbing tower, comprising a tower body (1), wherein a drain pipe (2) is installed on the bottom of the exterior of the tower body (1), characterized in that: A cleaning mechanism (3) is installed at the bottom of the tower body (1), a spraying mechanism (4) is installed at the top of the tower body (1), an exhaust pipe (5) is installed through the top of the tower body (1), a packing layer (6) is provided in the middle of the tower body (1), and a demisting layer (7) is provided in the top of the tower body (1). The cleaning mechanism (3) includes an air inlet pipe (8), a rotating rod (9) is movably installed inside the air inlet pipe (8), a first motor (10) is installed at the outer end of the rotating rod (9), two sets of spiral blades (11) are installed around the rotating rod (9) and inside the air inlet pipe (8), several through holes (12) are opened on the surface of the spiral blades (11), a water baffle (13) is installed at the top of the air inlet pipe (8), and a slag discharge pipe (14) is vertically installed at one end of the bottom of the air inlet pipe (8), and a sealing cap (15) is connected to the bottom end of the slag discharge pipe (14).

2. The electroplating waste gas spray tower according to claim 1, characterized in that: The rotating rod (9) is fixedly connected to the output shaft of the first motor (10), and the air inlet pipe (8) is horizontally installed inside the tower body (1) near the bottom.

3. The electroplating waste gas spray tower according to claim 1, characterized in that: The two sets of spiral blades (11) are arranged in opposite spiral directions, and several through holes (12) are evenly opened on the surface of the spiral blades (11).

4. The electroplating waste gas spray tower according to claim 1, characterized in that: A gap is provided between the bottom of the water baffle (13) and the top of the air inlet pipe (8), and the sealing cover (15) and the bottom of the slag discharge pipe (14) are connected by a thread.

5. The electroplating waste gas spray tower according to claim 1, characterized in that: The spraying mechanism (4) includes a fixed frame (16) and an inlet pipe (17). The fixed frame (16) and the inlet pipe (17) are both fixedly installed inside the tower body (1) near the top. A rotating seat (18) is movably installed inside the fixed frame (16) near the bottom. A set of spraying frames (19) is fixedly installed at the bottom of the rotating seat (18). A conduit (20) is installed at the top of the rotating seat (18) and through the top of the fixed frame (16). A second motor (21) is installed on the outside of the tower body (1) near the top. The inner end of the output shaft of the second motor (21) and the outside of the conduit (20) are both equipped with bevel gears (22).

6. The electroplating waste gas spray tower according to claim 5, characterized in that: The top of the conduit (20) extends through the inside of the inlet pipe (17), and the two conical teeth (22) are connected in an interlocking manner.

7. The electroplating waste gas spray tower according to claim 5, characterized in that: The bottom ends of the rotating seat (18) and the conduit (20) are both rotatably arranged inside the fixed frame (16). The interiors of the rotating seat (18), the conduit (20) and the inlet pipe (17) are interconnected, and the rotating seat (18) and the conduit (20) are fixedly connected.

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