Pretreatment device for electroplating sewage

Abstract

The utility model provides a pretreatment device for electroplating sewage, which belongs to the technical field of sewage treatment, and aims to solve the problems that solid pollutants accumulated on the inner wall of an existing settling tank are relatively tedious to clean, and an additive enters a tank body in a centralized manner at a certain position, so that the overall treatment efficiency of the electroplating sewage is influenced. The tank cover is fixedly connected to the upper surface of the tank body; the two feeding ports are dispersedly formed in the top of the tank cover; the transmission box is fixedly connected to the upper surface of the tank cover; the bidirectional rotating assembly is arranged in the transmission box and the tank body; and the feeding assembly is arranged in the tank body. Sewage and additives in the tank body can be more quickly and uniformly mixed through the first stirring shaft and the second stirring shaft which are opposite in rotation direction, the scraping rods can scrape impurities attached to the inner wall, the additives are uniformly thrown out from a plurality of discharging holes of the material scattering box, and the mixing efficiency is further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment, and more specifically, particularly relates to a pretreatment device for electroplating sewage. Background Technique

[0002] Electroplating wastewater often contains a large amount of suspended solids and particulate impurities. The pretreatment device can preliminarily separate these substances through physical and chemical methods, reducing the pressure on subsequent treatment links. The sedimentation tank removes suspended particulate matter in electroplating wastewater through gravity sedimentation, which is one of the main physical treatment methods in the pretreatment stage. Existing sedimentation tanks generally consist of a tank body, a water inlet, a stirring shaft, a water outlet, and a sludge storage area.

[0003] The existing application number: CN202121428819.X. The utility model discloses a pretreatment device for electroplating comprehensive wastewater, including a tank body. A motor and a filter box are arranged on the tank body. The rotating shaft end of the motor penetrates through the tank body and is provided with a first rotating rod. A connecting rod and a first stirring rod are arranged on the first rotating rod. A second rotating rod is rotatably connected to the connecting rod. A gear is arranged at the top end of the second rotating rod. A toothed ring is arranged on the inner wall of the tank body. The gear and the toothed ring are meshed with each other. A second stirring rod is arranged on the second rotating rod. A blower is arranged on the inner wall of the tank body. By setting the motor, the toothed ring and the gear, it is convenient to drive the second rotating rod to rotate in a circular motion while rotating itself, and cooperate with the second stirring rod for stirring. By setting the blower and the filter box, the purpose of filtering the odor of sewage is achieved, which is beneficial to protecting the surrounding environment.

[0004] Based on the above, after the sedimentation tank operates continuously for a period of time, a layer of solid pollutants often inevitably accumulates on its inner wall, which not only has a negative impact on the equipment performance, but also is extremely cumbersome to clean these stubborn pollutants. When chemical additives such as coagulants and flocculants need to be added to the sedimentation tank, the traditional operation method mostly relies on manual addition, which easily causes the additives to enter the tank body concentrated at a certain position, thereby significantly prolonging the time for the additives to be evenly mixed with the electroplating sewage in the tank, greatly affecting the overall treatment efficiency and effect of the electroplating sewage. Summary of the Utility Model

[0005] In order to solve the above technical problems, the utility model provides a pretreatment device for electroplating sewage to solve the problems that after the existing sedimentation tank operates continuously for a period of time, a layer of solid pollutants often inevitably accumulates on its inner wall, which not only has a negative impact on the equipment performance, but also is extremely cumbersome to clean these stubborn pollutants. When chemical additives such as coagulants and flocculants need to be added to the sedimentation tank, the traditional operation method mostly relies on manual addition, which easily causes the additives to enter the tank body concentrated at a certain position, thereby significantly prolonging the time for the additives to be evenly mixed with the electroplating sewage in the tank, greatly affecting the overall treatment efficiency and effect of the electroplating sewage.

[0006] The purpose and efficacy of a pretreatment device for electroplating wastewater in the present utility model are achieved by the following specific technical means:

[0007] A pretreatment device for electroplating wastewater includes a tank body; a tank cover fixedly connected to the upper surface of the tank body; a drain port fixedly connected to the right side of the tank body; two feed ports dispersedly opened on the top of the tank cover; a water inlet opened on the top of the tank cover; a transmission box fixedly connected to the top of the tank cover; a driving motor fixedly connected to the transmission box; two covers dispersedly inserted into the two feed ports; a bidirectional rotation assembly arranged inside the transmission box and the tank body; and a feeding assembly arranged inside the tank body.

[0008] Furthermore, the bidirectional rotation assembly includes: a first transmission shaft coaxially and fixedly connected to the end of the rotating shaft of the driving motor; a plurality of first fan blades dispersedly and fixedly connected to the bottom of the first transmission shaft.

[0009] Furthermore, the bidirectional rotation assembly further includes: a driving bevel gear coaxially and fixedly connected to the top of the first transmission shaft; a first connecting shaft rotatably connected inside the transmission box; a driven bevel gear coaxially and fixedly connected to the left end of the first connecting shaft, and the driven bevel gear meshes with the driving bevel gear.

[0010] Furthermore, the bidirectional rotation assembly further includes: a second transmission shaft rotatably connected to the bottom of the transmission box, and the second transmission shaft is sleeved outside the first connecting shaft; a driven bevel gear coaxially and fixedly connected to the top of the second transmission shaft, and the driven bevel gear meshes with the driving bevel gear; a plurality of second fan blades dispersedly and fixedly connected to the outside of the second transmission shaft.

[0011] Furthermore, the bidirectional rotation assembly further includes: a connecting rod fixedly connected to the outside of the second transmission shaft; two scraping rods respectively fixedly connected to the lower surfaces of the left and right ends of the connecting rod, and the outer arc surfaces of the two scraping rods are attached to the inner wall of the tank body.

[0012] Furthermore, the feeding assembly includes: a material spreading box coaxially and fixedly connected to the top of the second transmission shaft; two feeding openings dispersedly opened on the material spreading box; and a plurality of discharge holes dispersedly opened on the bottom of the material spreading box.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] First of all, through the bidirectional rotating assembly, the first stirring shaft and the second stirring shaft rotate in opposite directions, which can better mix the electroplating sewage and additives inside the tank body, improving the mixing efficiency. When the second transmission shaft rotates, it will also drive two scraping rods to rotate through the connecting rod, so as to scrape the solid impurities attached to the inner wall of the tank body during the last treatment of electroplating sewage.

[0015] Secondly, when the second transmission shaft rotates, the feeding box will rotate accordingly, and under the action of centrifugal force, the additives are thrown out from multiple discharging holes, so that these additives can be evenly dispersed and fall into the electroplating sewage inside the tank body, enabling these additives to be mixed with the electroplating sewage more quickly and evenly.

[0016] With the first stirring shaft and the second stirring shaft rotating in opposite directions, the electroplating sewage and additives inside the tank body of the utility model can be mixed more quickly and evenly. The scraping rod can scrape the impurities attached to the inner wall of the tank body, ensuring the long-term stable operation of the equipment and the convenience of cleaning and maintenance. Under the action of centrifugal force, the additives are evenly thrown out from multiple discharging holes of the feeding box, ensuring the uniform distribution of the additives and further improving the mixing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the overall structural schematic diagram of the utility model.

[0018] Figure 2 is the structural schematic diagram of the connecting rod of the utility model.

[0019] Figure 3 is the structural schematic diagram of the first connecting shaft of the utility model.

[0020] Figure 4 is the structural schematic diagram of the tank cover of the utility model.

[0021] Figure 5 is the structural schematic diagram of the feeding box of the utility model.

[0022] In the figure, the corresponding relationship between the component names and the drawing reference numbers is as follows:

[0023] 1. Tank body; 101. Tank cover; 102. Drainage port; 103. Feed port; 104. Water inlet; 2. Transmission box; 3. Driving motor; 4. First transmission shaft; 401. First fan blade; 402. Driving bevel gear; 5. First connecting shaft; 501. Driven bevel gear; 6. Second transmission shaft; 601. Driven bevel gear; 602. Second fan blade; 7. Connecting rod; 701. Scraping rod; 8. Feeding box; 801. Feeding opening; 802. Discharging hole; 9. Cover plate. Detailed implementation mode

[0024] The following further describes the implementation mode of the present utility model in detail in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0025] Embodiment 1:

[0026] As shown in the attached Figure 1 to the attached Figure 5 shown:

[0027] The present utility model provides a pretreatment device for electroplating sewage, including a tank body 1;

[0028] A tank cover 101, and the tank cover 101 is fixedly connected to the upper surface of the tank body 1;

[0029] A drain port 102, and the drain port 102 is fixedly connected to the right side of the tank body 1;

[0030] Two feed ports 103 are provided, and the two feed ports 103 are dispersedly opened on the top of the tank cover 101;

[0031] An inlet port 104 is opened on the top of the tank cover 101;

[0032] A transmission box 2, and the transmission box 2 is fixedly connected to the tank cover 101;

[0033] A driving motor 3, and the driving motor 3 is fixedly connected to the transmission box 2;

[0034] Two cover plates 9 are provided, and the two cover plates 9 are dispersedly inserted into the two feed ports 103;

[0035] A bidirectional rotation assembly is arranged inside the transmission box 2 and the tank body 1.

[0036] Among them, the bidirectional rotation assembly includes:

[0037] A first transmission shaft 4, and the first transmission shaft 4 is coaxially and fixedly connected to the end of the rotating shaft of the driving motor 3;

[0038] A plurality of first fan blades 401 are provided, and the plurality of first fan blades 401 are dispersedly and fixedly connected to the bottom of the first transmission shaft 4. The function is that the driving motor 3 drives the first transmission shaft 4 to rotate, so as to stir the electroplating sewage inside the tank body 1 through the first fan blades 401.

[0039] Among them, the bidirectional rotation assembly further includes:

[0040] A driving bevel gear 402, and the driving bevel gear 402 is coaxially and fixedly connected to the top of the first transmission shaft 4;

[0041] The first connecting shaft 5 is rotatably connected inside the transmission box 2;

[0042] The transmission bevel gear 501 is coaxially and fixedly connected to the left end of the first connecting shaft 5. The transmission bevel gear 501 meshes with the driving bevel gear 402. The function is that the first transmission shaft 4 drives the first connecting shaft 5 and the transmission bevel gear 501 to rotate through the bevel gear transmission mechanism jointly constituted by the meshing of the transmission bevel gear 501 and the driving bevel gear 402.

[0043] Among them, the bidirectional rotation assembly further includes:

[0044] The second transmission shaft 6 is rotatably connected to the bottom of the transmission box 2. The second transmission shaft 6 is sleeved outside the first connecting shaft 5;

[0045] The driven bevel gear 601 is coaxially and fixedly connected to the top of the second transmission shaft 6. The driven bevel gear 601 meshes with the transmission bevel gear 501;

[0046] A plurality of second fan blades 602 are provided. The plurality of second fan blades 602 are dispersedly and fixedly connected to the outside of the second transmission shaft 6. The function is that the transmission bevel gear 501 drives the second transmission shaft 6 to rotate in the reverse direction through the bevel gear transmission mechanism constituted by meshing with the driven bevel gear 601, thereby driving the second fan blades 602 to rotate in the reverse direction.

[0047] Among them, the bidirectional rotation assembly further includes:

[0048] The connecting rod 7 is fixedly connected to the outside of the second transmission shaft 6;

[0049] Two scraping rods 701 are provided. The two scraping rods 701 are respectively fixedly connected to the lower parts of the left and right ends of the connecting rod 7. The outer arc surfaces of the two scraping rods 701 are attached to the inner wall of the tank body 1. The function is that when the second transmission shaft 6 rotates, it can drive the two scraping rods 701 through the connecting rod 7 to scrape the solid impurities adhered to the inner wall of the tank body 1.

[0050] The specific usage mode and function of this embodiment:

[0051] The electroplating wastewater to be subjected to precipitation treatment enters from the inside of the water inlet 104. Additives such as coagulants and flocculants are input through the feed inlet 103. Then, the driving motor 3 is started, and the driving motor 3 drives the first transmission shaft 4 to rotate. Thus, the electroplating wastewater inside the tank body 1 is stirred by the first fan blade 401. The first transmission shaft 4 drives the first connecting shaft 5 and the driving bevel gear 501 to rotate through the bevel gear transmission mechanism jointly constituted by the driving bevel gear 501 meshing with the driven bevel gear 402. The driving bevel gear 501 drives the second transmission shaft 6 to rotate in the reverse direction through the bevel gear transmission mechanism constituted by meshing with the driven bevel gear 601. Thus, the second fan blade 602 is driven to rotate in a direction opposite to the rotation direction of the first fan blade 401, making the mixing of the additives and the electroplating wastewater better and more conducive to subsequent precipitation. When the second transmission shaft 6 rotates, it can also drive the two scraping rods 701 to rotate through the connecting rod 7, so as to scrape off the solid impurities adhering to the inner wall of the tank body 1 during the previous treatment of electroplating wastewater.

[0052] Embodiment 2:

[0053] On the basis of Embodiment 1, as shown in the attached Figure 1 to the attached Figure 5 figure, it further includes a feeding assembly, and the feeding assembly is arranged inside the tank body 1.

[0054] Among them, the feeding assembly includes:

[0055] A material spreading box 8, and the material spreading box 8 is coaxially and fixedly connected to the top of the second transmission shaft 6;

[0056] Feeding openings 801, two feeding openings 801 are opened, and the two feeding openings 801 are dispersedly opened on the material spreading box 8;

[0057] Discharge holes 802, multiple discharge holes 802 are opened, and the multiple discharge holes 802 are dispersedly opened at the bottom of the material spreading box 8.

[0058] The specific usage method and function of this embodiment:

[0059] When additives such as coagulants and flocculants are input through the feed inlet 103, they will enter the inside of the material spreading box 8 from the feeding openings 801. When the second transmission shaft 6 rotates, the material spreading box 8 rotates accordingly, and under the action of centrifugal force, the additives are thrown out from the multiple discharge holes 802, so that these additives can be evenly dispersed and fall into the electroplating wastewater in the tank body 1, enabling these additives to be mixed with the electroplating wastewater more quickly and evenly.

Claims

1. A pretreatment device for electroplating wastewater, comprising a tank body, a tank cover, a drain port, a feed port, a water inlet, a transmission box, a drive motor, a cover plate, a bidirectional rotating assembly and a feeding assembly; characterized in that: The tank cover is fixedly connected to the tank body; the drain port is fixedly connected to the right side of the tank body; two feed ports are provided, and the two feed ports are dispersedly provided on the top of the tank cover; the water inlet is provided on the top of the tank cover; the transmission box is fixedly connected to the tank cover; the drive motor is fixedly connected to the transmission box; two cover plates are provided, and the two cover plates are dispersedly plugged into the two feed ports; the bidirectional rotation assembly is provided inside the transmission box and the tank body; the feeding assembly is provided inside the tank body.

2. A pretreatment device for electroplating wastewater as claimed in claim 1, characterized in that: The bidirectional rotating assembly includes: a first transmission shaft and a first fan blade; the first transmission shaft is coaxially fixedly connected to the end of the rotating shaft of the driving motor; the first fan blade is provided in multiple pieces, and the multiple first fan blades are dispersedly fixedly connected to the bottom of the first transmission shaft.

3. A pretreatment device for electroplating wastewater as claimed in claim 2, characterized in that: The bidirectional rotation assembly also includes: a driving bevel gear, a first connecting shaft and a transmission bevel gear; the driving bevel gear is coaxially fixedly connected to the top of the first transmission shaft; the first connecting shaft is rotatably connected inside the transmission box; the transmission bevel gear is coaxially fixedly connected to the left end of the first connecting shaft, and the transmission bevel gear is meshed with the driving bevel gear.

4. A pretreatment device for electroplating wastewater as claimed in claim 3, characterized in that: The bidirectional rotation component also includes: a second transmission shaft, a driven bevel gear and a second fan blade; the second transmission shaft is rotatably connected to the bottom of the transmission box, and the second transmission shaft is sleeved on the outside of the first connecting shaft; the driven bevel gear is coaxially fixedly connected to the top of the second transmission shaft, and the driven bevel gear is meshed with the transmission bevel gear; the second fan blade is provided with multiple pieces, and the multiple second fan blades are dispersedly fixedly connected to the outside of the second transmission shaft.

5. A pretreatment device for electroplating wastewater as claimed in claim 4, characterized in that: The bidirectional rotation assembly also includes: a connecting rod and a scraping rod; the connecting rod is fixedly connected to the outside of the second transmission shaft; the scraping rod is provided with two pieces, and the two scraping rods are respectively fixedly connected under the left and right ends of the connecting rod, and the outer arc surfaces of the two scraping rods are in contact with the inner wall of the tank body.

6. A pretreatment device for electroplating wastewater as claimed in claim 1, characterized in that: The feeding assembly includes: a feeding box, a feeding opening and a discharge hole; the feeding box is coaxially fixedly connected to the top of the second transmission shaft; two feeding openings are provided, and the two feeding openings are dispersedly provided on the feeding box; multiple discharge holes are provided, and the multiple discharge holes are dispersedly provided at the bottom of the feeding box.

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