Electroplating wastewater treatment equipment

Abstract

The invention relates to the technical field of electroplating equipment, in particular to electroplating wastewater treatment equipment which comprises a reaction cylinder, an air inlet pipe extending into an inner cavity of the reaction cylinder is fixedly connected to the side wall of the reaction cylinder in a penetrating manner, one end of the air inlet pipe is fixedly communicated with a vertical pipe, a rotating shaft is rotatably mounted in an inner cavity of the vertical pipe, and an aeration inner cylinder is fixedly arranged at the lower end of the vertical pipe; the steel wire mesh is arranged into an upper-layer structure and a lower-layer structure which are mutually rotated and staggered, and the driving gear and the inner gear ring are in transmission connection through a transmission gear; the device has the beneficial effects that a steel wire mesh is arranged at the upper end of a vertical pipe, the steel wire mesh is of an upper-lower double-layer structure and is mutually rotated and staggered, a driving gear is arranged at the upper end of a rotating shaft, a transmission gear is arranged between the driving gear and an inner gear ring for transmission, and floating bubbles can be effectively cut when the steel wire mesh rotates, so that the sizes of the bubbles are kept in a small state; the adhesion effect on fine suspended matters is improved, so that the treatment effect on the electroplating wastewater is improved.

Description

Technical Field

[0001] The invention relates to the technical field of electroplating equipment, and in particular to electroplating wastewater treatment equipment. Background Art

[0002] The flotation method for treating electroplating wastewater mainly involves introducing air into the water to generate tiny bubbles. Due to the adhesion between the bubbles and the tiny suspended matter, a flotation body is formed. The bubbles float to the water surface by the buoyancy effect, forming foam or scum, thereby separating the suspended matter in the water.

[0003] A Chinese invention with publication number CN117401762B discloses an electroplating wastewater treatment device, which mainly uses an aeration module to float pollutants such as oil and tiny suspended particles in the wastewater in a first cavity to the water surface through bubbles.

[0004] At present, electroplating wastewater is usually treated in a high-rise reaction cylinder. After the aeration module generates bubbles and gradually floats up, the liquid pressure around the bubbles gradually decreases, the bubble volume gradually increases, and the adhesion effect between the bubbles and fine suspended matter becomes worse, thereby affecting the effect of flotation method for treating electroplating wastewater. To this end, the present invention proposes an electroplating wastewater treatment device for solving the above problems. Summary of the invention

[0005] The object of the present invention is to provide an electroplating wastewater treatment device to solve the problem in the above-mentioned background technology that the volume of bubbles gradually increases when floating up and the adhesion effect on fine suspended matter becomes worse.

[0006] To achieve the above object, the present invention provides the following technical solution: an electroplating wastewater treatment device, comprising:

[0007] A reaction cylinder, wherein the side wall of the reaction cylinder is fixedly connected with an air inlet pipe extending into the inner cavity of the reaction cylinder, one end of the air inlet pipe is fixedly connected with a vertical pipe, the inner cavity of the vertical pipe is rotatably installed with a rotating shaft, an aeration inner cylinder is fixedly arranged at the lower end of the vertical pipe, a through groove 1 is provided on the surface of the aeration inner cylinder, an aeration outer cylinder is fixedly arranged at the lower end of the rotating shaft, and the aeration outer cylinder is located in the inner cavity of the aeration inner cylinder, a through groove 2 is provided on the surface of the aeration outer cylinder, and the through groove 2 and the through groove 1 intersect each other to form an "X" shape;

[0008] A wire mesh is arranged at the upper end of the rotating shaft. The wire mesh is arranged into an upper and lower layer structure and is rotated and offset relative to each other. An inner gear ring is fixedly arranged in the middle of the wire mesh. A driving gear is fixedly sleeved on the upper end of the rotating shaft. The driving gear and the inner gear ring are connected through a transmission gear.

[0009] Preferably, an upper cover and a lower cover are respectively provided on the upper and lower sides of the wire mesh, and the two are symmetrical to each other. The upper cover is fixed to the bottom of the top cover of the reaction cylinder through a bracket, and the lower cover is fixedly connected to the connecting ring fixed to the upper end of the vertical pipe. The upper cover and the lower cover are fixedly connected by bolts.

[0010] Preferably, the transmission gear is rotatably installed at the edge of the inner cavity of the lower cover, and a plurality of transmission gears are provided and distributed in a circular array around the driving gear. An annular step is provided at the connection between the inner gear ring and the wire mesh, and the edges of the upper cover and the lower cover are respectively sealed with the upper and lower surfaces of the annular step.

[0011] Preferably, the wire mesh comprises a plurality of steel wires that cross each other to form a "well" shape, an annular plate for shaping the wire mesh is provided at the edge of the wire mesh, and a straight plate for reinforcing the wire mesh is radially provided on the surface of the wire mesh.

[0012] Preferably, the middle portion of the vertical tube protrudes outward to form an installation chamber, a mounting ring is fixedly provided in the middle portion of the rotating shaft, and the mounting ring is located in the inner cavity of the installation chamber, and a plurality of inclined fan blades distributed in a ring array are fixed on the surface of the mounting ring.

[0013] Preferably, an interface pipe is fixedly connected to the surface of the installation chamber in the tangential direction, a plug-in plate is fixed to the end face of the interface pipe, a socket sleeve is fixed to one end of the air inlet pipe, the plug-in plate is vertically plugged into the inner cavity of the socket sleeve, and the interface pipe and the air inlet pipe maintain corresponding connection.

[0014] Preferably, the lower half of the rotating shaft is hollow and communicated with the inner cavity of the aeration outer cylinder, and an air inlet hole communicating with the inner cavity is opened on the surface of the lower half of the rotating shaft.

[0015] Preferably, the through slots one and two are provided in multiple groups and are distributed in a circular array around the rotating shaft, each group of the through slots one and two is provided with multiple through slots and are distributed at equal intervals along the length direction of the rotating shaft, and the through slots one and two are inclined at positive and negative thirty degrees respectively to the axial direction of the rotating shaft.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention provides a steel wire mesh at the upper end of a vertical pipe. The steel wire mesh has an upper and lower double-layer structure and is rotated and staggered with each other. An inner gear ring is provided in the middle of the steel wire mesh, a driving gear is provided at the upper end of a rotating shaft, a transmission gear is provided between the driving gear and the inner gear ring for transmission, a mounting ring is provided in the middle of the rotating shaft, and an inclined fan blade is provided on the outer side of the mounting ring. When external gas is ventilated to the inner cavity of the vertical pipe, the inclined fan blade is blown by the gas to drive the rotating shaft and the driving gear to rotate, and then the steel wire mesh is driven to rotate through the transmission gear. When the steel wire mesh rotates, it can effectively cut the floating bubbles, so that the volume of the bubbles is kept small, so as to improve the adhesion effect of fine suspended matter, thereby improving the treatment effect of electroplating wastewater. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the internal structure of the overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the interior of the vertical pipe structure of the present invention;

[0020] Figure 3 It is a cutaway schematic diagram of the vertical pipe structure of the present invention;

[0021] Figure 4 It is a partially cutaway schematic diagram of the rotating shaft structure of the present invention;

[0022] Figure 5 It is an exploded schematic diagram of the steel wire mesh and the rotating shaft structure of the present invention;

[0023] Figure 6 It is a three-dimensional schematic diagram of the lower cover structure of the present invention;

[0024] Figure 7 This is a schematic diagram of the explosion of the wire mesh structure of the present invention;

[0025] Figure 8 It is an exploded schematic diagram of the intake pipe and vertical pipe structure of the present invention.

[0026] In the figure: 1. reaction cylinder; 2. air inlet pipe; 21. receiving sleeve; 3. vertical pipe; 31. aeration inner cylinder; 311. through groove 1; 32. connecting ring; 33. installation chamber; 34. interface pipe; 35. plug-in board; 4. rotating shaft; 41. aeration outer cylinder; 411. through groove 2; 42. driving gear; 43. air inlet hole; 44. installation ring; 45. oblique fan blade; 5. wire mesh; 51. inner gear ring; 6. upper cover; 7. lower cover; 71. transmission gear. DETAILED DESCRIPTION

[0027] 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, rather than all of the embodiments, 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.

[0028] See also Figures 1 to 8 , the present invention provides a technical solution:

[0029] Embodiment 1, an electroplating wastewater treatment device, includes: a reaction cylinder 1.

[0030] Specifically, an air inlet pipe 2 extending into the inner cavity of the reaction cylinder 1 is fixedly connected to the side wall of the reaction cylinder 1, and the air inlet pipe 2 is connected with an external gas compressor to deliver compressed gas into the electroplating wastewater in the inner cavity of the reaction cylinder 1. A vertical pipe 3 is fixedly connected to one end of the air inlet pipe 2. The vertical pipe 3 is vertically arranged in the axial direction of the reaction cylinder 1. A rotating shaft 4 is rotatably installed in the inner cavity of the vertical pipe 3. An aeration inner cylinder 31 is fixedly arranged at the lower end of the vertical pipe 3. A through groove 1 311 is provided on the surface of the aeration inner cylinder 31. An aeration outer cylinder 41 is fixedly arranged at the lower end of the rotating shaft 4, and the aeration outer cylinder 41 is located in the inner cavity of the aeration inner cylinder 31. A through groove 2 411 is provided on the surface of the aeration outer cylinder 41. After the gas in the inner cavity of the air inlet pipe 2 enters the inner cavity of the vertical pipe 3, it flows downward and enters the inner cavity of the aeration outer cylinder 41. The surface of the aeration outer cylinder 41 is kept in contact with the inner cavity of the aeration inner cylinder 31, which can prevent The compressed gas enters between the aeration inner cylinder 31 and the aeration outer cylinder 41 and overflows from the through groove 1 311. The compressed gas can only enter the inner cavity of the aeration outer cylinder 41, and then successively pass through the inner cavities of the through groove 2 411 and the through groove 1 311. Since the through groove 2 411 and the through groove 1 311 intersect with each other to form an "X" shape, the gas can be discharged from the intersection and overlap of the through groove 2 411 and the through groove 1 311. As the shaft 4 rotates, the through groove 1 311 and the through groove 2 411 always have an area that intersects with each other, so bubbles can be continuously generated in the electroplating wastewater around the aeration inner cylinder 31. Due to the rotation of the aeration outer cylinder 41, the inner wall edges of the through groove 2 411 and the through groove 1 311 always move relatively. In the process of compressed gas discharge, a certain cutting effect can be produced on the gas, thereby reducing the volume of bubbles around the aeration inner cylinder 31.

[0031] Secondly, a wire mesh 5 is arranged at the upper end of the rotating shaft 4. The wire mesh 5 is arranged in an upper and lower two-layer structure, and is rotated and staggered with each other. The wire diameter of the wire mesh 5 itself is small, and the gaps between the wires are generated by the mutual crossing of the wires. Bubbles can pass through the wire mesh 5 from bottom to top during the floating process, and the wire mesh 5 can produce a horizontal cutting effect on the bubbles when rotating, thereby reducing the volume of the bubbles and improving the adhesion effect of the bubbles on fine suspended matter. The double-layer wire mesh 5 is staggered with each other, which can slow down the floating speed of the bubbles, ensuring that more bubbles can be The wire mesh 5 is cut, and an inner gear ring 51 is fixedly set in the middle of the wire mesh 5. A driving gear 42 is fixedly sleeved on the upper end of the rotating shaft 4. The driving gear 42 and the inner gear ring 51 are connected by a transmission gear 71. When the rotating shaft 4 rotates, it drives the driving gear 42 to rotate, and then the transmission gear 71 can drive the inner gear ring 51 and the wire mesh 5 to rotate. Since the driving gear 42 drives the inner gear ring 51 to reduce speed and save effort, the rotating shaft 4 can drive the wire mesh 5 to rotate smoothly without a large torque.

[0032] In order to suspend the device, the present application also has an upper cover 6 and a lower cover 7 respectively arranged on the upper and lower sides of the wire mesh 5, and the two are symmetrical to each other. The upper cover 6 is fixed to the bottom of the top cover of the reaction tube 1 through a bracket, and the lower cover 7 is fixedly connected to the connecting ring 32 fixed to the upper end of the vertical tube 3. The upper cover 6 and the lower cover 7 are fixedly connected by bolts. The setting of the upper cover 6 and the lower cover 7 is used to suspend the wire mesh 5 and the vertical tube 3 of the device in the middle of the inner cavity of the reaction tube 1 to ensure that the rotating shaft 4 and the wire mesh 5 can rotate smoothly.

[0033] In order to rotationally seal the inner gear ring 51, the transmission gear 71 of the present application is rotatably installed at the edge of the inner cavity of the lower cover 7. A plurality of transmission gears 71 are arranged and distributed in an annular array around the driving gear 42, which is used to improve the transmission effect between the driving gear 42 and the inner gear ring 51, and reduce the stress of a single transmission gear 71, thereby extending the service life of the device as a whole. An annular step is provided at the connection between the inner gear ring 51 and the wire mesh 5, and the edges of the upper cover 6 and the lower cover 7 are respectively sealed with the upper and lower surfaces of the annular step, which is used to seal the inner gear ring 51, the transmission gear 71 and the driving gear 42 between the upper cover 6 and the lower cover 7, thereby reducing damage to parts caused by oxidation corrosion.

[0034] In order to reinforce the wire mesh 5, the wire mesh 5 of the present application includes a plurality of steel wires that cross each other to form a "well" shape, an annular plate for shaping the wire mesh 5 is provided at the edge of the wire mesh 5, and a straight plate for reinforcing the wire mesh 5 is radially provided on the surface of the wire mesh 5. The settings of the annular plate and the straight plate can reinforce the wire mesh 5 itself and prevent the wire mesh 5 from being damaged by a large degree of deformation during long-term operation.

[0035] In order to rotatably install the rotating shaft 4, the present application also has an installation chamber 33 formed by a protrusion outward in the middle of the vertical tube 3, a mounting ring 44 is fixedly provided in the middle of the rotating shaft 4, and the mounting ring 44 is located in the inner cavity of the mounting chamber 33, and a plurality of inclined fan blades 45 distributed in a ring array are fixed on the surface of the mounting ring 44, and both the mounting ring 44 and the inclined fan blades 45 can rotate in the inner cavity of the mounting chamber 33, and the cooperation between the mounting ring 44 and the mounting chamber 33 ensures that the rotating shaft 4 can only rotate in the inner cavity of the vertical tube 3 without position displacement. In addition, bearings can be sleeved on the outer sides of the upper and lower ends of the rotating shaft 4 to position the rotating shaft 4, thereby ensuring the normal rotation of the rotating shaft 4 while avoiding displacement of the rotating shaft 4.

[0036] In order to drive the rotating shaft 4 to rotate, the present application also has a surface of the installation chamber 33 in the tangential direction fixedly connected with an interface pipe 34, the end surface of the interface pipe 34 is fixed with a plug plate 35, one end of the intake pipe 2 is fixed with a socket sleeve 21, the plug plate 35 is vertically plugged into the inner cavity of the socket sleeve 21, and the interface pipe 34 is kept in corresponding communication with the intake pipe 2, and the structure of the socket sleeve 21 is as shown in FIG. Figure 8 As shown, when the vertical tube 3 is placed as a whole from top to bottom in the inner cavity of the reaction tube 1, the plug-in plate 35 can be plugged into the inner cavity of the receiving sleeve 21 from top to bottom, so as to realize the connection between the interface pipe 34 and the air inlet pipe 2, and sealing gaskets are also provided at the end faces of the two to improve the sealing effect. The air inlet pipe 2 delivers the compressed gas into the inner cavity of the installation chamber 33 along the interface pipe 34. At this time, the compressed gas impacts the surface of the inclined fan blades 45, which can drive the inclined fan blades 45 and the rotating shaft 4 to rotate, so the rotation of the rotating shaft 4 does not require additional power equipment.

[0037] In order to ensure the normal flow of compressed gas, the present application also has a hollow lower half of the shaft 4 connected to the inner cavity of the aeration outer cylinder 41, and an air inlet 43 connected to the inner cavity is opened on the lower half of the shaft 4. Figure 4 and Figure 2 As shown, the compressed gas in the inner cavity of the vertical pipe 3 can enter the inner cavity of the aeration outer cylinder 41 through the air inlet 43, and then pass through the second through groove 411 and the first through groove 311 in sequence and be discharged into the electroplating wastewater around the vertical pipe 3 to form bubbles.

[0038] In order to increase the number of bubbles generated, the present application also has multiple groups of through grooves 1 311 and through grooves 2 411, which are distributed in a circular array around the rotating shaft 4, and each group of through grooves 1 311 and through grooves 2 411 is provided with multiple and evenly spaced distributions along the length direction of the rotating shaft 4, and through grooves 1 311 and through grooves 2 411 are respectively inclined to the axis direction of the rotating shaft 4 by positive and negative 30 degrees, and combined with Figure 2 , Figure 3 and Figure 4As shown, during the rotation of the aeration outer cylinder 41, the through groove 2 411 and the through groove 1 311 always have mutually overlapping areas, which can allow compressed gas to be continuously discharged into the electroplating wastewater, thereby continuously generating bubbles, and a large number of bubbles are generated around the aeration inner cylinder 31, which can effectively adhere to more fine suspended matter in the electroplating wastewater.

[0039] 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. An electroplating wastewater treatment equipment, characterized in that: include: A reaction cylinder (1), wherein an air inlet pipe (2) extending into the inner cavity of the reaction cylinder (1) is fixedly connected to the side wall of the reaction cylinder (1), one end of the air inlet pipe (2) is fixedly connected to a vertical pipe (3), the inner cavity of the vertical pipe (3) is rotatably mounted with a rotating shaft (4), an aeration inner cylinder (31) is fixedly arranged at the lower end of the vertical pipe (3), a through groove 1 (311) is provided on the surface of the aeration inner cylinder (31), an aeration outer cylinder (41) is fixedly arranged at the lower end of the rotating shaft (4), the aeration outer cylinder (41) is located in the inner cavity of the aeration inner cylinder (31), a through groove 2 (411) is provided on the surface of the aeration outer cylinder (41), and the through groove 2 (411) and the through groove 1 (311) intersect each other to form an "X" shape; A steel mesh (5) is arranged at the upper end of the rotating shaft (4), and the steel mesh (5) is arranged in an upper and lower layer structure and is rotated and offset relative to each other. An inner gear ring (51) is fixedly arranged in the middle of the steel mesh (5), and a driving gear (42) is fixedly sleeved on the upper end of the rotating shaft (4). The driving gear (42) and the inner gear ring (51) are connected to each other through a transmission gear (71).

2. The electroplating wastewater treatment equipment according to claim 1, characterized in that: An upper cover (6) and a lower cover (7) are respectively provided on the upper and lower sides of the steel wire mesh (5), and the two are symmetrical to each other. The upper cover (6) is fixed to the bottom of the top cover of the reaction cylinder (1) through a bracket, and the lower cover (7) is fixedly connected to a connecting ring (32) fixed to the upper end of the vertical pipe (3). The upper cover (6) and the lower cover (7) are fixedly connected by bolts.

3. The electroplating wastewater treatment equipment according to claim 2, characterized in that: The transmission gear (71) is rotatably mounted on the edge of the inner cavity of the lower cover (7); a plurality of transmission gears (71) are provided and are distributed in a ring array around the driving gear (42); an annular step is provided at the connection between the inner gear ring (51) and the wire mesh (5); and the edges of the upper cover (6) and the lower cover (7) are respectively sealed with the upper and lower surfaces of the annular step.

4. The electroplating wastewater treatment equipment according to claim 1, characterized in that: The steel wire mesh (5) comprises a plurality of steel wires that cross each other to form a "well" shape, an annular plate for shaping the steel wire mesh (5) is arranged at the edge of the steel wire mesh (5), and a straight plate for reinforcing the steel wire mesh (5) is radially arranged on the surface of the steel wire mesh (5).

5. The electroplating wastewater treatment equipment according to claim 1, characterized in that: The middle portion of the vertical tube (3) protrudes outward to form a mounting chamber (33); a mounting ring (44) is fixedly provided at the middle portion of the rotating shaft (4), and the mounting ring (44) is located in the inner cavity of the mounting chamber (33); and a plurality of inclined blades (45) distributed in a ring array are fixed on the surface of the mounting ring (44).

6. The electroplating wastewater treatment equipment according to claim 5, characterized in that: The surface of the installation chamber (33) is fixedly connected to a mouthpiece (34) in a tangential direction, a plug-in plate (35) is fixed to the end surface of the mouthpiece (34), a socket sleeve (21) is fixed to one end of the air intake pipe (2), the plug-in plate (35) is vertically plugged into the inner cavity of the socket sleeve (21), and the mouthpiece (34) and the air intake pipe (2) are kept in corresponding communication.

7. The electroplating wastewater treatment equipment according to claim 1, characterized in that: The lower half of the rotating shaft (4) is hollow and communicates with the inner cavity of the aeration outer cylinder (41); an air inlet (43) is provided on the surface of the lower half of the rotating shaft (4) and communicates with the inner cavity.

8. The electroplating wastewater treatment equipment according to claim 1, characterized in that: The through slots 1 (311) and 2 (411) are provided in a plurality of groups and are distributed in a circular array around the rotating shaft (4); each group of the through slots 1 (311) and 2 (411) is provided with a plurality of through slots 1 (311) and 2 (411) and are distributed at equal intervals along the length direction of the rotating shaft (4); the through slots 1 (311) and 2 (411) are respectively inclined at positive and negative thirty degrees to the axial direction of the rotating shaft (4).

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