Hot rolling wastewater treatment device

Abstract

The invention discloses a hot rolling wastewater treatment device, and belongs to the technical field of water treatment. The wastewater treatment device comprises a processing table, the processing table is fixedly provided with a water storage tank, a water storage tank and a water storage tank, the dosing mechanism is communicated with a pipeline at the bottom of the reservoir for dosing and flocculating; the lifting mechanism is arranged on the outer side of the reservoir and comprises a linear module and a connecting piece, and the linear module lifts the filter plate to the top of the reservoir through the connecting piece; the shifting mechanism comprises a driving part, a connecting rod group and a movable clamping table, the connecting rod group is movably locked with the filter plate through the movable clamping table, and the driving part shifts the filter plate from the top of the reservoir to the outer side of the reservoir in an arc manner through the connecting rod group. According to the method, iron can be recycled after flocculation of the hot rolling wastewater, the working procedures are fewer, the recycling process is more convenient, and the efficiency is higher.

Description

Technical Field

[0001] This invention relates to the field of water treatment technology, and more specifically, to a hot rolling wastewater treatment device. Background Technology

[0002] The pollutants in hot rolling wastewater mainly originate from the rolling, cooling, and descaling processes of hot steel billets. It is characterized by extremely large water volume, high water temperature, and the main pollutants being in physical forms (suspended solids and grease), with relatively few toxic or harmful chemicals. Suspended solids are generally formed during high-pressure water descaling (removing the oxide layer from the steel billet surface), roll cooling, and rinsing of the iron slab grooves. Grease is typically hydraulic oil, lubricating oil, gear oil, etc., flushed out by the high-pressure water.

[0003] The main component of suspended solids is generally iron oxide scale, which is a mixture of iron oxides (FeO, Fe2O3, Fe3O4) that are peeled off from the surface of steel during the rolling process. The particles vary in size and are difficult to recover.

[0004] Currently, the treatment method for the above-mentioned hot rolling wastewater is generally to use sedimentation tanks to recover large suspended solids. This method has the following limitations: first, smaller suspended impurities need to be recovered by separate flocculation; second, traditional sedimentation and recovery methods use grab cranes or screw conveyors to remove the solids, which are costly and have low recovery efficiency in deep water conditions.

[0005] Therefore, we propose a hot rolling wastewater treatment device to solve the above problems. Summary of the Invention

[0006] In view of the above-mentioned problems existing in the prior art, the purpose of the present invention is to provide a hot rolling wastewater treatment device.

[0007] To solve the above problems, the technical solution adopted by the present invention is as follows: a hot rolling wastewater treatment device, comprising a processing table, wherein the processing table is respectively fixed with:

[0008] The water storage tank has a filter plate at the bottom. The filter plate is an arc-shaped plate with filter grooves on the corresponding arc surface. The side of the filter plate abuts against the inner wall of the water storage tank. The filter plate is fixedly connected with a hanging lug and a fastening platform. A dosing mechanism is connected to the bottom pipeline of the water storage tank for dosing flocculation. A lifting mechanism, located on the outside of the water storage tank, includes a linear module and a connector. The linear module is lifted in conjunction with the hanging lug through the connector, and the filter plate is lifted to the top of the water storage tank. The shifting mechanism includes a driving component, a linkage group, and a movable clamping platform. The linkage group is movably locked to the latching platform via the movable clamping platform. The driving component shifts the filter plate from the top of the water storage tank to the outside of the water storage tank in an arc shape via the linkage group.

[0009] Furthermore, the dosing mechanism includes two parallel and connected inlet pipes, both of which are pressurized by a metering pump. One of the inlet pipes is also equipped with a pressure valve at the top for monitoring. The two inlet pipes merge at the bottom and are connected to the bottom of the water storage tank via a unified pipeline.

[0010] Furthermore, the lifting mechanism includes a U-shaped plate, a connecting column, a buffer column, and a sliding member. The U-shaped plate is mounted on one side of the water storage tank. One end of the U-shaped plate is turned outward and then folded upward to engage with the hanging ear. The other end is connected and fixed to the connecting column. There are two buffer columns, which are vertically fixed to the processing table. Both ends of the connecting column are slidably connected to the buffer column through the sliding member.

[0011] Furthermore, the linear module is a ball screw driven by a servo electronic control, and the corresponding slide in the linear module is fixed to the center bolt of the connecting column.

[0012] Furthermore, the sliding component includes a corner bracket, a first roller, and a second roller. The corner bracket comprises two components, which are respectively bolted to both sides of the end of the connecting column. The outer end of the corner bracket extends outward and is rotatably connected to the first roller. The top of the corner bracket extends upward and is rotatably connected to the second roller. The diameter of the first roller is consistent with the height of the upper extension of the corner bracket. The buffer column is a square tube. Both the first roller and the second roller are in rolling contact with the side wall of the buffer column.

[0013] Furthermore, the driving component includes a servo motor, a mounting plate, a motor mounting bracket, a synchronous belt, a rotating shaft, and a synchronous pulley. The mounting plate is vertically fixed to the processing table. The servo motor is connected and fixed to the back of the mounting plate through the motor mounting bracket. The rotating shaft is rotatably connected to the mounting plate. The output end of the servo motor is driven by the rotating shaft through the synchronous pulley and the synchronous belt.

[0014] Furthermore, the linkage assembly includes a swing arm and a height arm. The rotating shaft is exposed on the mounting plate and fixedly connected to one end of the swing arm. The mounting plate also has a U-shaped groove on the top corresponding to the rotating shaft. The end of the swing arm away from the rotating shaft has a slot. A sliding column is fixed to the back of the top of the height arm. The sliding column passes through the slot and is slidably connected to the U-shaped groove. A transverse guide rail is fixed to the bottom of the mounting plate. A transverse slider is slidably connected to the transverse guide rail. A vertical guide rail is fixed to the front of the transverse slider. The height arm is slidably connected in the vertical guide rail. The height arm has adjustment holes equidistantly opened along its height axis. The movable clamping table is bolted to the adjustment holes.

[0015] Furthermore, the lateral length of the U-shaped groove is not less than the width of the filter plate, and the vertical length of the U-shaped groove is not less than the height of the filter plate.

[0016] Furthermore, the mounting plate is symmetrically fixed with limit sensing blocks on both outer sides corresponding to the U-shaped groove. The limit sensing blocks are electrically connected to the servo motor. An extension block is also fixed on the top front of the height arm. The extension block extends outward at both ends perpendicular to the height arm and is fixed with a contact, which can contact the limit sensing block.

[0017] Furthermore, the filter plate is composed of multiple arc-shaped pieces spaced apart, and the multiple arc-shaped pieces are fixed together by a slot plate.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) The present invention uses flocculant to add chemicals to flocculate small iron oxide particles in the water storage tank and then removes them. At this time, they can be combined with the previously precipitated solid particles and taken out, simplifying the process. (2) The present invention reduces the hard contact of the filter plate lifting operation by rolling, making the lifting process more stable; (3) The present invention drives the swing arm to swing through the rotating shaft. A slot is designed at the end of the swing arm, and the sliding column passes through the slot to provide freedom. Then, a horizontal guide rail and a vertical guide rail are designed at the bottom of the mounting plate. The freedom requirement of the linkage process between the height arm and the swing arm is realized through the dual-axis displacement of the two guide rails. Finally, the arc-shaped displacement is realized in the U-shaped groove, which drives the filter plate to move out from the top of the water storage tank as a whole and connects with the subsequent fixed collection bin. The linkage process is more integrated, no extra electrical control equipment is required, and the cost is lower. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the processing device of the present invention; Figure 2 This is a partial enlarged view of the linkage structure within the water storage tank of the present invention; Figure 3 This is a schematic diagram of the filter plate structure in this invention; Figure 4 This is a side view of the processing device of the present invention; Figure 5 This is a magnified view of a portion of the connector of the present invention; Figure 6 This is a front view of the processing device of the present invention.

[0020] In the diagram: 1. Processing table; 2. Water storage tank; 3. Filter plate; 301. Filter tank; 302. Hanging lug; 303. Snap-on platform; 304. Arc-shaped piece; 305. Slot plate; 4. Dosing mechanism; 401. Inlet pipe; 402. Metering pump; 403. Pressure valve; 5. Lifting mechanism; 51. Linear module; 52. Connector; 521. U-shaped plate; 522. Connecting column; 523. Buffer column; 53. Sliding part; 531. Angle bracket; 532. First roller; 533. Second roller; 6. Shifting element. Mechanism; 61. Drive component; 611. Servo motor; 612. Mounting plate; 613. Motor mounting bracket; 614. Synchronous belt; 615. Rotating shaft; 616. Synchronous pulley; 62. Linkage assembly; 621. Swing arm; 622. Height arm; 623. U-shaped groove; 624. Slot; 625. Sliding column; 626. Horizontal guide rail; 627. Horizontal slider; 628. Vertical guide rail; 629. Adjustment hole; 63. Movable clamping table; 64. Limit sensor block; 65. Extension block; 66. Contact. Detailed Implementation

[0021] The present invention will be further described below with reference to specific embodiments.

[0022] like Figures 1-6 As shown, in this embodiment, a hot rolling wastewater treatment device includes a processing table 1, on which the following are fixed: The water storage tank 2 has a filter plate 3 at its inner bottom. The filter plate 3 is an arc-shaped plate with filter grooves 301 corresponding to its arc surface. The side of the filter plate 3 abuts against the inner wall of the water storage tank 2. A hanging lug 302 and a fastening platform 303 are fixedly connected to the filter plate 3. The actual size of the filter grooves 301 can be designed independently and is not limited thereto. In this embodiment, the filter plate 3 is composed of multiple arc-shaped pieces 304 spaced apart, and the multiple arc-shaped pieces 304 are fixed together by a slot plate 305. The structure is reliable and assembly is simple. The dosing mechanism 4 is connected to the bottom pipeline of the water storage tank 2 for dosing flocculation. The lifting mechanism 5 is located on the outside of the water storage tank 2 and includes a linear module 51 and a connector 52. The linear module 51 is lifted in conjunction with the hanging ear 302 through the connector 52, and the filter plate 3 is lifted to the top of the water storage tank 2. The shifting mechanism 6 includes a driving component 61, a connecting rod assembly 62, and a movable clamping platform 63. The connecting rod assembly 62 is movably locked to the latching platform 303 via the movable clamping platform 63. The driving component 61 shifts the filter plate 3 from the top of the water storage tank 2 to the outside of the water storage tank 2 in an arc shape via the connecting rod assembly 62.

[0023] The following description, in conjunction with the accompanying drawings, further explains the aforementioned mechanisms and specific water treatment processes.

[0024] To avoid the additional steps of traditional flocculation operations, this invention establishes a corresponding dosing mechanism 4 on one side of the corresponding water storage tank 2. The dosing mechanism 4 includes two parallel and interconnected inlet pipes 401, both pressurized by a metering pump 402. One of the inlet pipes 401 is also equipped with a pressure valve 403 at its top for monitoring. The two inlet pipes 401 converge at their bottoms and are connected to the bottom of the water storage tank 2 via a unified pipeline. For the treatment of hot rolling wastewater, in addition to large particulate impurities (iron oxides, such as mixtures of FeO, Fe2O3, and Fe3O4) that can be settled by gravity, there are also small particles suspended in the water. Therefore, flocculants are added, and after flocculation, the particles are removed. At this time, they can be combined with the previously settled solid particles and removed, simplifying the process.

[0025] For the recovery of iron oxide particles, the traditional method of using grab cranes or screw conveyors to retrieve them is rather complicated. To address this, the present invention utilizes a lifting mechanism 5 in conjunction with a filter plate 3 placed at the bottom of the water storage tank 2 for recovery. The filter plate 3 is designed with an arc-shaped structure to increase recovery efficiency. During the recovery process, the lifting mechanism 5 first lifts the filter plate 3 to the top of the water storage tank 2, and then the shifting mechanism 6 moves the arc-shaped filter plate 3 to the outside of the water storage tank 2 in an arc shape, and then recovers the iron particles directly. This method is convenient, reliable, and more efficient.

[0026] Regarding the improvement process, such as Figures 1-3 As shown, the lifting mechanism 5 includes a U-shaped plate 521, a connecting column 522, a buffer column 523, and a sliding member 53. The U-shaped plate 521 is mounted on one side of the water storage tank 2. One end of the U-shaped plate 521 is turned outward and then folded upward to engage with the hanging ear 302. The other end is connected and fixed to the connecting column 522. There are two buffer columns 523, which are vertically fixed to the processing table 1. The two ends of the connecting column 522 are slidably connected to the buffer column 523 through the sliding member 53.

[0027] The U-shaped plate 521, which folds upwards, engages with the lug 302 of the filter plate 3. After the linear module 51 of the ball screw is lifted, the servo control drives the displacement. The corresponding slide in the linear module 51 is fixed to the center bolt of the connecting column 522. The lug 302 is a snap-fit ​​mechanism, which can be seamlessly connected during the subsequent linkage of the displacement mechanism 6 without interference.

[0028] Similarly, the buffering during the lifting process is to prevent the solid particles on filter plate 3 from shaking, such as... Figure 5As shown, the sliding member 53 includes a corner bracket 531, a first roller 532, and a second roller 533. The corner bracket 531 includes two members, which are respectively bolted to both sides of the end of the connecting column 522. The outer end of the corner bracket 531 extends outward and is rotatably connected to the first roller 532. The top of the corner bracket 531 extends upward and is rotatably connected to the second roller 533. The diameter of the first roller 532 is the same as the height of the upper extension of the corner bracket 531. The buffer column 523 is a square tube. Both the first roller 532 and the second roller 533 are in rolling contact with the side wall of the buffer column 523.

[0029] Both the first roller 532 and the second roller 533 can roll and contact the outer surface of the buffer column 523 during the lifting process of the filter plate 3, thereby reducing the hard contact during the lifting operation of the filter plate 3 by rolling, making the lifting process more stable.

[0030] Since the filter plate 3 designed in this invention is U-shaped, after being lifted to the top of the water storage tank 2, the filter plate 3 needs to be moved out as a whole. The curvature of the filter plate 3 (and its corresponding height and width) needs to be considered. Therefore, in this invention, the drive component 61 is used in conjunction with the connecting rod assembly 62 to achieve this synchronously. In the subsequent actual processing, a corresponding collection bin can be designed on the outside of the water storage tank 2 of the processing table 1 for manual recycling.

[0031] The design of the linkage group 62 is to avoid unnecessary equipment burden. Common dual-axis modules require two independent dual-axis systems for this design: one for the water storage tank 2 itself and one for the subsequent collection bin. To further reduce the cost of the resource recycling process, a corresponding linkage group 62 is designed to adjust the displacement method, replacing the conventional dual-axis displacement with an arc-shaped swing, which is lower in cost and more reasonable in design.

[0032] Specifically, such as Figure 4 As shown, the driving component 61 includes a servo motor 611, a mounting plate 612, a motor mounting bracket 613, a synchronous belt 614, a rotating shaft 615, and a synchronous pulley 616. The mounting plate 612 is vertically fixed on the processing table 1. The servo motor 611 is connected and fixed to the back of the mounting plate 612 through the motor mounting bracket 613. The rotating shaft 615 is rotatably connected to the mounting plate 612. The output end of the servo motor 611 is driven by the rotating shaft 615 through the synchronous pulley 616 and the synchronous belt 614.

[0033] like Figure 6As shown, the linkage assembly 62 includes a swing arm 621 and a height arm 622. The rotating shaft 615 is exposed on the mounting plate 612 and fixedly connected to one end of the swing arm 621. The mounting plate 612 also has a U-shaped groove 623 on the top corresponding to the rotating shaft 615. The end of the swing arm 621 away from the rotating shaft 615 has a slot 624. The back of the top of the height arm 622 is fixed with a sliding column 625. The sliding column 625 passes through the slot 624 and is slidably connected to the U-shaped groove 623. The bottom of the mounting plate 612 is fixed with a transverse guide rail 626. A transverse slider 626 is slidably connected on the transverse guide rail 626. The front of the transverse slider 626 is fixed with a vertical guide rail 627 perpendicular to it. The height arm 622 is slidably connected in the vertical guide rail 627. The height arm 622 has adjustment holes 628 equidistantly opened along its height axis. The movable clamping table 63 is bolted to the adjustment holes 628.

[0034] After the servo motor 611 drives the rotation, it drives the rotating shaft 615 to rotate via the synchronous belt 614 and synchronous pulley 616. The rotating shaft 615 drives the swing arm 621 to swing. The swinging process is the displacement of the sliding column 625 on the back of the swing arm 621 within the U-shaped groove 623. Considering the degree of freedom of swinging, a slot 624 is designed at the end of the swing arm 621. The sliding column 625 passes through the slot 624 to provide the degree of freedom. Then, correspondingly, a horizontal guide rail 626 and a vertical guide rail 627 are designed at the bottom of the mounting plate 612. Through the dual-axis displacement of the two guide rails, the degree of freedom required for the linkage process between the height arm 622 and the swing arm 621 is achieved. Finally, the rotation of the rotating shaft 615 is transformed into an arc-shaped displacement within the U-shaped groove 623, causing the filter plate 3 to be moved out from the top of the water storage tank 2 as a whole and handed over to the subsequent fixed collection chamber. The linkage process is more integrated, requiring no additional electrical control equipment and reducing costs.

[0035] In the actual design process, it should be considered that the horizontal length of the U-shaped groove 623 is not less than the width of the filter plate 3, and the vertical length of the U-shaped groove 623 is not less than the height of the filter plate 3.

[0036] Similarly, the mounting plate 612 is symmetrically fixed with limit sensing blocks 64 on both outer sides corresponding to the U-shaped groove 623. The limit sensing blocks 64 are electrically connected to the servo motor 611. An extension block 65 is also fixed to the top front of the height arm 622. The extension block 65 extends outward at both ends perpendicular to the height arm 622 and is respectively fixed with a contact 66. The contact 66 can contact the limit sensing block 64. The maximum displacement of the filter plate 3 is ensured by the mutual induction between the contact 66 and the limit sensing block 64, which is then used in conjunction with the collection chamber for the positioning and collection of iron oxide.

[0037] The technical scope of this invention is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this invention, and all such modifications and variations should fall within the protection scope of this invention.

Claims

1. A hot rolling wastewater treatment device, characterized in that, Includes a processing table, on which are fixed the following: The water storage tank has a filter plate at the bottom. The filter plate is an arc-shaped plate with filter grooves on the corresponding arc surface. The side of the filter plate abuts against the inner wall of the water storage tank. The filter plate is fixedly connected with a hanging lug and a fastening platform. A dosing mechanism is connected to the bottom pipeline of the water storage tank for dosing flocculation. A lifting mechanism, located on the outside of the water storage tank, includes a linear module and a connector. The linear module is lifted in conjunction with the hanging lug through the connector, and the filter plate is lifted to the top of the water storage tank. The shifting mechanism includes a driving component, a linkage group, and a movable clamping platform. The linkage group is movably locked to the latching platform via the movable clamping platform. The driving component shifts the filter plate from the top of the water storage tank to the outside of the water storage tank in an arc shape via the linkage group.

2. The hot rolling wastewater treatment device according to claim 1, characterized in that: The dosing mechanism includes two parallel and connected inlet pipes, both pressurized by a metering pump. One of the inlet pipes is equipped with a pressure valve at the top for monitoring. The two inlet pipes merge at the bottom and are connected to the bottom of the water storage tank via a unified pipeline.

3. The hot rolling wastewater treatment device according to claim 1, characterized in that: The connector includes a U-shaped plate, a connecting column, a buffer column, and a sliding component. The U-shaped plate is mounted on one side of the water storage tank. One end of the U-shaped plate is turned outward and then folded upward to engage with the hanging ear. The other end is connected and fixed to the connecting column. There are two buffer columns, which are vertically fixed to the processing table. Both ends of the connecting column are slidably connected to the buffer column through the sliding component.

4. The hot rolling wastewater treatment device according to claim 3, characterized in that: The linear module is a ball screw driven by a servo electronic control unit, and the corresponding slide in the linear module is fixed to the center bolt of the connecting column.

5. The hot rolling wastewater treatment device according to claim 3, characterized in that: The sliding component includes a corner bracket, a first roller, and a second roller. The corner bracket comprises two components, which are respectively bolted to both sides of the end of the connecting column. The outer end of the corner bracket extends outward and is rotatably connected to the first roller. The top of the corner bracket extends upward and is rotatably connected to the second roller. The diameter of the first roller is the same as the height of the upper extension of the corner bracket. The buffer column is a square tube. Both the first roller and the second roller are in rolling contact with the side wall of the buffer column.

6. The hot rolling wastewater treatment device according to claim 1, characterized in that: The driving component includes a servo motor, a mounting plate, a motor mounting bracket, a synchronous belt, a rotating shaft, and a synchronous pulley. The mounting plate is vertically fixed to the processing table. The servo motor is connected and fixed to the back of the mounting plate through the motor mounting bracket. The rotating shaft is rotatably connected to the mounting plate. The output end of the servo motor is driven by the synchronous pulley and the synchronous belt through the rotating shaft.

7. The hot rolling wastewater treatment device according to claim 6, characterized in that: The linkage assembly includes a swing arm and a height arm. The rotating shaft is exposed on the mounting plate and fixedly connected to one end of the swing arm. The mounting plate also has a U-shaped groove on the top corresponding to the rotating shaft. The end of the swing arm away from the rotating shaft has a slot. A sliding column is fixed to the back of the top of the height arm. The sliding column passes through the slot and is slidably connected to the U-shaped groove. A transverse guide rail is fixed to the bottom of the mounting plate. A transverse slider is slidably connected to the transverse guide rail. A vertical guide rail is fixed to the front of the transverse slider. The height arm is slidably connected in the vertical guide rail. The height arm has adjustment holes equidistantly opened along its height axis. The movable clamping table is bolted to the adjustment holes.

8. The hot rolling wastewater treatment device according to claim 7, characterized in that: The horizontal length of the U-shaped groove is not less than the width of the filter plate, and the vertical length of the U-shaped groove is not less than the height of the filter plate.

9. A hot rolling wastewater treatment device according to claim 7, characterized in that: The mounting plate is also symmetrically fixed with limit sensing blocks on both outer sides corresponding to the U-shaped groove. The limit sensing blocks are electrically connected to the servo motor. An extension block is also fixed on the top front of the height arm. The extension block extends outward at both ends perpendicular to the height arm and is fixed with a contact. The contact can contact the limit sensing block.

10. A hot rolling wastewater treatment device according to claim 1, characterized in that: The filter plate is composed of multiple arc-shaped pieces spaced apart, and the multiple arc-shaped pieces are fixed together by a slot plate.

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