Zero-discharge device for producing strong brine in ferrous metallurgical industry
By designing a multi-stage filtration and evaporation crystallization system for steel metallurgy industry, the problem that the steel metallurgy industry cannot effectively utilize crystallization when processing concentrated brine is solved, and multiple filtration and reuse of concentrated brine are realized. , maximize resource value and achieve zero emission target.
Patent Information
- Application Number
- CN202421259674.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-04
- Publication Date
- 2025-02-21
- Estimated Expiration
- 2034-06-04
AI Technical Summary
When the concentrated brine produced after processing is processed, the steel and metallurgical industry only performs simple evaporation and crystallization and discharges it, and cannot effectively utilize the crystallization, resulting in the reuse of the concentrated brine being unable to be maximized and waste resources are wasted.
A zero-discharge device for concentrated brine production in the steel and metallurgical industry is designed, including a multi-stage filtration system and an evaporation crystallization system. Multiple filtration of concentrated brine is achieved through components such as stirring rods, filter mesh, brush plates, filter membranes and deflectors. and preconcentrate, and finally crystallize and precipitate salt ions through the evaporation system to obtain clean water that meets the emission standards.
Effective pretreatment and reuse of concentrated brine is achieved. Through multiple filtration and evaporation and crystallization, the resource value of concentrated brine is maximized, the waste of waste resources is avoided, and the zero emission target of concentrated brine is achieved.
Smart Images
Figure CN222512856U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field related to iron and steel metallurgy, in particular to a zero-discharge device for producing concentrated brine in the iron and steel metallurgical industry. Background Art
[0002] The iron and steel metallurgical industry consumes a huge amount of water. In order to respond to the call to protect water resources and prevent water pollution, the steel industry needs to take measures to practice the concept of ecological civilization, filter, evaporate and crystallize the concentrated brine generated during production, turn waste into treasure, and truly achieve zero discharge of production wastewater;
[0003] However, at present, the concentrated brine produced after steel metallurgy is only simply treated. The brine is evaporated and crystallized and then the waste water is discharged. It is not convenient to utilize the crystals, and it is impossible to maximize the reuse of the concentrated brine, which wastes waste resources. Therefore, we propose a zero-discharge device for producing concentrated brine in the steel metallurgical industry to solve the above-mentioned problems. Utility Model Content
[0004] The utility model aims to provide a zero-discharge device for producing concentrated brine in the iron and steel metallurgical industry, so as to solve the problem raised in the above-mentioned background technology that the concentrated brine produced after iron and steel metallurgy is currently only simply treated, the waste water is discharged after the brine is evaporated and crystallized, which is not convenient for utilizing the crystals, and the degree of reuse of the concentrated brine cannot be maximized, thus wasting waste resources.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: A zero-discharge device for producing concentrated brine in the iron and steel metallurgical industry, comprising: an installation box for installation, a motor fixedly installed in the middle of the upper end of the installation box, and an electric telescopic rod installed inside the installation box;
[0006] Also includes:
[0007] A first filter box, wherein the first filter box is fixedly mounted inside the upper end of the mounting box, a stirring rod is mounted inside the first filter box, and a brush plate is fixedly connected to the lower end of the central axis of the stirring rod;
[0008] A second filter box, wherein the second filter box is installed below the first filter box, and a filter membrane is connected to the lower end of the second filter box, a guide plate is arranged outside the lower end of the filter membrane, and the guide plate is fixed to the lower end of the second filter box;
[0009] A connecting rod is fixedly mounted on the end of the extension rod of the electric telescopic rod, and the lower end of the electric telescopic rod is fixedly connected to a protrusion on the left side wall of the mounting box, and the front and rear ends of the connecting rod are connected to the fixing block through the mounting block.
[0010] Preferably, the upper end of the first filter box is penetrated by a feed port, and the feed port is fixedly connected to the left and right sides of the upper end of the installation box respectively, and the lower part of the first filter box is arranged in a funnel-shaped structure.
[0011] Preferably, the brush plate is rotatably connected to the upper side of the filter screen via a stirring rod, and the filter screen is fixedly mounted on the inner side of the lower end of the first filter box, and the upper end of the stirring rod is fixedly connected to the output end of the motor.
[0012] Preferably, a collecting box is installed directly below the second filter box, and the second filter box and the collecting box are rotatably connected to the inside of the installation box, and a solenoid valve is fixedly installed in the discharge port at the lower right end of the second filter box and the collecting box, and the lower end of the first filter box extends into the inner side of the second filter box from above.
[0013] Preferably, the upper end of the collecting box is extended by a guide plate, and the cross-section of the guide plate is a square structure, and rubber sealing pads are fixedly installed at the lower ends of the right parts of the collecting box and the second filter box.
[0014] Preferably, mounting blocks are fixedly mounted on both the front and rear ends of the connecting rod, and the mounting blocks are slidably connected to a transverse sliding groove provided inside the fixing block via an electric telescopic rod.
[0015] Preferably, the rubber sealing pad fits against the inner wall of the drain pipe when the second filter box and the collection box rotate, and the drain pipe is fixedly installed on the lower right side of the installation box, and the drain pipe is respectively arranged below the right end of the second filter box and the collection box.
[0016] Compared with the prior art, the utility model has the following beneficial effects: the zero-discharge device for concentrated brine produced by the iron and steel metallurgical industry, as a pretreatment device for concentrated brine, filters the concentrated brine from which solid impurities are fully removed, separates the salts of monovalent and divalent anions by using a permeable membrane, and prepares for subsequent separate crystallization of the brine. After the concentrated brine is filtered, the evaporation system is used to crystallize the salt ions, and purified water that meets the discharge standards is obtained, thereby achieving zero discharge of concentrated brine;
[0017] 1. It is equipped with a stirring rod, a filter screen and a brush plate. The concentrated brine obtained in the production is injected into the first filter box and filtered again through the filter screen to prevent undissolved lumps from affecting the subsequent filtration of the liquid. The stirring rod slowly stirs the concentrated brine to increase the filtration speed and break up the lumps. The brush plate follows the stirring rod to slide on the filter screen to prevent the filter screen from being blocked and affecting the normal filtration work;
[0018] 2. A second filter box, a filter membrane and a guide plate are provided. The concentrated brine after filtration enters the second filter box and is allowed to stand. Only salts with monovalent anions can pass through the filter membrane, so that the sodium chloride solution gradually permeates through the filter membrane and enters the collection box. The sodium sulfate solution is retained in the second filter box. The guide plate prevents the liquid from splashing outside the collection box, and the concentrated brine is pre-concentrated to provide a basis for subsequent evaporation and crystallization.
[0019] 3. A fixed block, a drain pipe and a rubber sealing pad are provided. The electric telescopic rod extension rod pushes the connecting rod upward. At this time, the mounting block slides in the transverse groove inside the fixed block, and lifts up the left part of the second filter box and the collecting box respectively, so that the second filter box and the collecting box can rotate along the hinge point with the mounting box. After the rubber sealing pad is attached to the inner side of the drain pipe, the solenoid valve is opened to drain the liquid, which is convenient for taking out all the solution in the device. The setting of the rubber sealing pad prevents the liquid from flowing back to the outside of the drain pipe during drainage, thereby ensuring the purity of the collected solution and preventing liquid from falling into the device. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a schematic diagram of the front cross-sectional structure of the utility model;
[0021] Figure 2 It is a front view structural schematic diagram of the second filter box and the collection box of the utility model in a rotating state;
[0022] Figure 3 It is a side view structural schematic diagram of the second filter box of the utility model;
[0023] Figure 4 For this utility model Figure 2 Enlarged structural diagram at A in the middle.
[0024] In the figure: 1. Installation box; 2. Motor; 3. Feed inlet; 4. First filter box; 5. Stirring rod; 6. Filter screen; 7. Brush plate; 8. Second filter box; 9. Filter membrane; 10. Guide plate; 11. Collecting box; 12. Solenoid valve; 13. Electric telescopic rod; 14. Connecting rod; 15. Installation block; 16. Fixed block; 17. Drain pipe; 18. Rubber sealing pad. DETAILED DESCRIPTION
[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0026] See also Figure 1-4The utility model provides a technical solution: a zero-discharge device for producing concentrated brine in the iron and steel metallurgical industry, comprising: an installation box 1, a motor 2, a feed port 3, a first filter box 4, a stirring rod 5, a filter screen 6, a brush plate 7, a second filter box 8, a filter membrane 9, a guide plate 10, a collection box 11, a solenoid valve 12, an electric telescopic rod 13, a connecting rod 14, a mounting block 15, a fixing block 16, a drain pipe 17 and a rubber sealing pad 18.
[0027] When using the zero-discharge device for producing concentrated brine in the iron and steel metallurgical industry, first Figure 1 , Figure 2 As shown, the motor 2 is fixedly mounted in the middle of the upper end of the installation box 1, the feed port 3 is fixedly connected to the left and right sides of the upper end of the installation box 1, and the lower end of the feed port 3 penetrates the installation box 1 and extends into the interior of the first filter box 4, the first filter box 4 is fixedly mounted on the inner side of the upper end of the installation box 1, the upper end of the stirring rod 5 is fixedly connected to the output end of the feed port 3, and a brush plate 7 is fixedly mounted on the lower end of the rotating shaft of the stirring rod 5, the stirring rod 5 and the brush plate 7 are synchronously rotated and connected to the interior of the first filter box 4, and the brush plate 7 rotates on the upper end surface of the filter screen 6, and the filter screen 6 is fixedly mounted on the inner side of the lower end of the first filter box 4;
[0028] The concentrated brine produced after steel metallurgy is fed into the first filter box 4 from the feed port 3, and then the motor 2 is turned on to make the stirring rod 5 and the brush plate 7 rotate synchronously. The stirring rod 5 slowly and evenly stirs the concentrated brine in the first filter box 4 to speed up the filtration efficiency and break up the solid salt blocks. The concentrated brine is filtered from the filter screen 6, and the liquid flows to the inside of the second filter box 8, while the solid impurities are intercepted at the upper end of the filter screen 6. When the brush plate 7 rotates, it prevents the filter screen 6 from being blocked by impurities and affecting the normal filtration work. The first filter box 4 has a funnel-shaped structure to facilitate the complete rolling of the concentrated brine.
[0029] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the second filter box 8 is installed below the first filter box 4, and the lower end of the first filter box 4 extends into the inner side of the second filter box 8, the lower end of the second filter box 8 is fixedly installed with a filter membrane 9 and a guide plate 10, and the guide plate 10 is arranged below and outside the filter membrane 9, the lower end of the guide plate 10 extends into the inside of the collection box 11, and the collection box 11 is installed directly below the second filter box 8, and the second filter box 8 and the collection box 11 are fixedly installed with a solenoid valve 12 in the lower right end discharge port, and a rubber sealing pad 18 is fixed below the discharge port;
[0030] The concentrated brine entering the second filter box 8 is filtered statically, and the salt of monovalent anions passes through the filter membrane 9 and enters the interior of the collection box 11. The guide plate 10 prevents the brine from splashing to the outside of the collection box 11, while the salt of divalent anions is intercepted by the filter membrane 9 and remains in the interior of the second filter box 8, completing the separation of monovalent and divalent anion salts, laying the foundation for subsequent separate crystallization work. Subsequently, the evaporation crystallization system evaporates and crystallizes the separated brine to produce crystalline salt, precipitates the salt content of the concentrated brine, and the wastewater meets the discharge standard, truly achieving zero discharge of concentrated brine, while improving the utilization rate of waste concentrated brine;
[0031] The electric telescopic rod 13 is fixedly mounted on a convex block mounted on the left inner wall of the installation box 1, and the extension rod end of the electric telescopic rod 13 is fixedly connected to the connecting rod 14, and the front and rear ends of the connecting rod 14 are fixedly mounted with mounting blocks 15, the mounting blocks 15 are cylindrical in structure, the mounting blocks 15 are slidably connected to the transverse grooves provided inside the fixing blocks 16, and the fixing blocks 16 are respectively fixedly mounted on the upper left ends of the second filter box 8 and the collecting box 11, the drain pipe 17 penetrates the installation box 1 and is fixedly mounted on the lower right end of the installation box 1, and the drain pipe 17 is respectively arranged below the second filter box 8 and the collecting box 11;
[0032] When the filtration is completed and the brine needs to be discharged, the electric telescopic rod 13 is opened so that the extension rod pushes the connecting rod 14 upward. At this time, the mounting block 15 is driven by the connecting rod 14 to slide in the fixed block 16, and the second filter box 8 and the collecting box 11 are flipped together by the fixed block 16. The second filter box 8 and the collecting box 11 are rotated and tilted along the hinge points with the mounting box 1 in the middle of the front and rear sides. The rubber sealing pad 18 is tightly attached to the inner wall of the drain pipe 17, and the solenoid valve 12 is controlled to open so that the brine flows out from the drain pipe 17. The rubber sealing pad 18 prevents the brine from flowing back and falling onto the inner wall of the mounting box 1, and prevents the purity of the brine in the collecting box 11 from being destroyed, so as to facilitate the rapid discharge of the brine and simplify the operating steps.
[0033] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. In addition, the directional terms such as up, down, left, right, front, and back in the text only represent their relative positions rather than absolute positions.
[0034] The standard parts used in the utility model can all be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt the conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here.
[0035] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.
Claims
1. A zero-discharge device for producing concentrated brine in the iron and steel metallurgical industry, comprising: An installation box (1) for installation, a motor (2) fixedly mounted in the middle of the upper end of the installation box (1), and an electric telescopic rod (13) mounted inside the installation box (1); It is characterized by further comprising: A first filter box (4), the first filter box (4) is fixedly mounted inside the upper end of the installation box (1), a stirring rod (5) is installed inside the first filter box (4), and a brush plate (7) is fixedly connected to the lower end of the central axis of the stirring rod (5); A second filter box (8), the second filter box (8) is installed below the first filter box (4), and the lower end of the second filter box (8) is connected to a filter membrane (9), a guide plate (10) is arranged outside the lower end of the filter membrane (9), and the guide plate (10) is fixed to the lower end of the second filter box (8); A connecting rod (14), wherein the connecting rod (14) is fixedly mounted on the end of the extension rod of the electric telescopic rod (13), and the lower end of the electric telescopic rod (13) is fixedly connected to a protrusion on the left side wall of the installation box (1), and the front and rear ends of the connecting rod (14) are connected to a fixing block (16) via a mounting block (15).
2. A zero-discharge device for producing concentrated brine in the iron and steel metallurgical industry according to claim 1, characterized in that: The upper end of the first filter box (4) is penetrated by a feed port (3), and the feed port (3) is respectively fixedly connected to the left and right sides of the upper end of the installation box (1), and the lower part of the first filter box (4) is arranged in a funnel-shaped structure.
3. A zero-discharge device for producing concentrated brine in the iron and steel metallurgical industry according to claim 1, characterized in that: The brush plate (7) is rotatably connected to the upper side of the filter screen (6) via a stirring rod (5), and the filter screen (6) is fixedly mounted on the inner side of the lower end of the first filter box (4), and the upper end of the stirring rod (5) is fixedly connected to the output end of the motor (2).
4. A zero-discharge device for producing concentrated brine in the iron and steel metallurgical industry according to claim 1, characterized in that: A collecting box (11) is installed directly below the second filter box (8), and the second filter box (8) and the collecting box (11) are both rotatably connected to the inside of the installation box (1), and a solenoid valve (12) is fixedly installed in the discharge port at the lower right end of the second filter box (8) and the collecting box (11), and the lower end of the first filter box (4) extends from the top into the inner side of the second filter box (8).
5. A zero-discharge device for producing concentrated brine in the iron and steel metallurgical industry according to claim 4, characterized in that: The upper end of the collection box (11) is extended by a guide plate (10), and the cross-section of the guide plate (10) is a square structure. The right lower ends of the collection box (11) and the second filter box (8) are both fixedly mounted with rubber sealing pads (18).
6. The zero-discharge device for producing concentrated brine in the iron and steel metallurgical industry according to claim 1, characterized in that: The front and rear ends of the connecting rod (14) are fixedly mounted with mounting blocks (15), and the mounting blocks (15) are slidably connected to a transverse sliding groove provided inside the fixing block (16) via an electric telescopic rod (13).
7. The zero-discharge device for producing concentrated brine in the iron and steel metallurgical industry according to claim 5, characterized in that: The rubber sealing pad (18) fits with the inner wall of the drain pipe (17) when the second filter box (8) and the collection box (11) rotate, and the drain pipe (17) is fixedly installed on the lower right side of the installation box (1), and the drain pipe (17) is respectively arranged below the right end of the second filter box (8) and the collection box (11).