A reactor tank

Abstract

The utility model discloses a kind of reaction tanks, comprising: tank body, with the processing cavity of upper end opening;Cover is located in the upper end of tank body, and cover plate is provided with processing agent adding mouth;Stirring device, including rotating shaft, motor and multiple blade assemblies, rotating shaft rotation is set in tank body, motor is drivingly connected in rotating shaft, multiple blade assemblies are set in rotating shaft, and located in processing cavity;Pneumatic mixing device, including fan and air pipe, air pipe is connected in the export side of fan, air pipe is at least partially located in processing cavity and lower than blade assembly, and air pipe is provided with several air holes in the lower side of blade assembly.The utility model is set by setting stirring device including blade assembly and pneumatic mixing device, and air hole is set in the lower side of blade assembly, so that it can be simultaneously by mechanical stirring and pneumatic stirring two kinds of ways to wastewater for sufficient uniform stirring, to make wastewater and processing agent fully and evenly mixed, improve the treatment effect to wastewater.

Description

Technical Field

[0001] This utility model relates to the treatment of ferric phosphate wastewater, and in particular to a reaction tank. Background Technology

[0002] Iron phosphate (FePO4) is a precursor for the cathode material of lithium iron phosphate (LFP) batteries. With the continuous expansion of the LFP battery market, the production scale of FePO4 has also grown rapidly. To reduce costs, the current FePO4 production process mainly uses ferrous sulfate, a byproduct of titanium dioxide, as the iron source, synthesizing FePO4 through a two-step process. The production process of FePO4 involves synthesis and rinsing, generating large amounts of synthesis mother liquor and rinsing wastewater. This wastewater contains high concentrations of sulfate, phosphate, ammonia nitrogen, and heavy metal ions, and is classified as high-ammonia nitrogen, high-phosphorus, high-salt, and high-acid wastewater. Direct discharge would severely damage the environment; therefore, a specialized wastewater treatment system is required.

[0003] In existing technologies, there are various methods for treating wastewater from ferric phosphate production, and the corresponding treatment systems vary. However, some core components are indispensable, such as reaction tanks. In wastewater treatment systems, multiple processes require the use of reaction tanks, such as pH adjustment and wastewater softening. These processes often require the addition of wastewater treatment agents, thus the reaction tanks also need to be equipped with stirring devices for mixing. However, most existing reaction tanks use conventional stirring shafts (with blades), resulting in poor mixing uniformity. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a reaction tank that can fully and uniformly stir wastewater.

[0005] The reaction tank according to an embodiment of the present invention includes: The tank has a processing cavity with an opening at the top; A cover plate is provided on the upper end of the tank, and the cover plate is provided with a treatment agent addition port; A stirring device includes a rotating shaft, a motor, and multiple blade assemblies. The rotating shaft is rotatably mounted on the tank, the motor is drivenly connected to the rotating shaft, and the multiple blade assemblies are mounted on the rotating shaft and located within the processing chamber. A pneumatic mixing device includes a fan and an air pipe. The air pipe is connected to the outlet side of the fan. The air pipe is at least partially located inside the processing chamber and below the blade assembly. The air pipe has a plurality of air holes on the lower side of the blade assembly.

[0006] The reaction tank according to the embodiments of this utility model has at least the following beneficial effects: By setting up a stirring device including a blade assembly and a pneumatic mixing device, and placing the air holes on the lower side of the blade assembly, the wastewater can be thoroughly and evenly stirred by both mechanical and pneumatic stirring at the same time, so as to ensure that the wastewater and the treatment agent are thoroughly and evenly mixed, thereby improving the wastewater treatment effect.

[0007] According to some embodiments of the present invention, at least some of the pores have downward openings.

[0008] According to some embodiments of the present invention, the trachea includes: The first tube is horizontally disposed on the lower side of the blade assembly, and the first tube is provided with the air hole; The second pipe is connected to one end of the first pipe and extends vertically to the upper part of the tank. The third pipe is connected to the upper end of the second pipe and extends horizontally to the outside of the trough, for connecting the fan; The upper edge of the groove has a notch for the third pipe to pass through.

[0009] According to some embodiments of the present invention, multiple sets of air holes are arranged at intervals along the axial direction of the first tube, and each set of air holes includes multiple air holes arranged at intervals along the circumference of the first tube.

[0010] According to some embodiments of the present invention, the tank is provided with a first snap-fit ​​part on the bottom wall of the processing cavity and a second snap-fit ​​part on one side wall of the processing cavity. The first snap-fit ​​part is elastic and is provided with a first snap-fit ​​groove for the first tube to be snapped in. The second snap-fit ​​part is elastic and is provided with a second snap-fit ​​groove for the second tube to be snapped in.

[0011] According to some embodiments of the present invention, the pneumatic mixing device further includes: The flow divider has a flow divider cavity, and an air intake main pipe and multiple flow divider pipes are respectively connected to both sides of the flow divider cavity. The air intake main pipe is connected to the fan. The air tube and the shunt tube are respectively arranged in a one-to-one correspondence, and the third tube is connected to the shunt tube through a tube connector.

[0012] According to some embodiments of the present invention, the blade assembly includes two blade portions, which are symmetrically disposed on opposite radial sides of the rotating shaft. Each blade portion includes: The connecting plate is equipped with a limit protrusion; The stirring blade is fixed to the side of the connecting plate opposite to the limiting protrusion. The connecting plates of the two blade sections are connected by a first bolt assembly, and the outer peripheral wall of the rotating shaft is provided with a limiting groove for the limiting protrusion to be inserted to limit the connecting plate axially and circumferentially.

[0013] According to some embodiments of the present invention, the connecting plate includes: An arc-shaped plate is fitted to the outer peripheral wall of the rotating shaft, and the limiting protrusion is provided on the inner peripheral wall of the arc-shaped plate; Two ear plates are fixed to opposite ends of the arc-shaped plate in the circumferential direction, and the ear plates are provided with holes that match the first bolt assembly.

[0014] According to some embodiments of the present invention, the upper edge of the groove is provided with a horizontally outwardly extending extension plate, and the cover plate is connected to the extension plate by a second bolt assembly.

[0015] According to some embodiments of the present invention, the lower surface of the cover plate is provided with an embedding part, which is embedded in the processing cavity to horizontally position the cover plate and the groove.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the external structure of the reaction tank according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the internal structure of the reaction tank according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the internal structure of the tank in an embodiment of the present invention; Figure 4 This is an exploded view of the installation structure of the blade assembly and the rotating shaft according to an embodiment of the present invention.

[0018] Icon labels: Tank 100, processing chamber 101, extension plate 102, notch 103, first snap-fit ​​part 110, first snap-fit ​​groove 111, second snap-fit ​​part 120, second snap-fit ​​groove 121, water inlet pipe 130, water outlet pipe 140; Cover plate 200, treatment agent addition port 201, embedding part 202; Stirring device 300, rotating shaft 310, limiting groove 311, motor 320, blade part 330, connecting plate 340, limiting protrusion 341, arc plate 342, ear plate 343, stirring blade 350, first bolt assembly 360; Pneumatic mixing device 400, air pipe 410, air hole 411, first pipe 412, second pipe 413, third pipe 414, flow divider 420, main air inlet pipe 421, and flow divider pipe 422. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0020] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0022] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0023] Reference Figures 1 to 4 As shown, a reaction tank according to an embodiment of the present invention includes: a tank body 100, a cover plate 200, a stirring device 300, and a pneumatic mixing device 400.

[0024] The tank 100 has a treatment chamber 101 with an opening at the top. The tank 100 is provided with an inlet pipe 130 and an outlet pipe 140 on opposite sides of the treatment chamber 101 for wastewater to enter and exit. The outlet pipe 140 is located at the bottom of the treatment chamber 101.

[0025] A cover plate 200 is placed on the upper end of the tank 100, and a treatment agent addition port 201 is provided on the cover plate 200 for adding treatment agent.

[0026] The stirring device 300 includes a rotating shaft 310, a motor 320, and multiple blade assemblies. The rotating shaft 310 is rotatably mounted on the tank 100 and extends horizontally. The motor 320 is located outside the tank 100 and is connected to the rotating shaft 310 to drive the rotating shaft 310 to rotate. Multiple blade assemblies are mounted on the rotating shaft 310 and located inside the treatment chamber 101. The multiple blade assemblies are arranged at intervals along the axial direction of the rotating shaft 310. The rotating shaft 310 is driven to rotate by the motor 320, which in turn drives the blade assemblies to rotate. The blade assemblies can agitate the wastewater in the treatment chamber 101 to mix the wastewater with the treatment agent.

[0027] The pneumatic mixing device 400 includes a blower (not shown in the diagram) and an air pipe 410. The blower is located outside the tank 100, and the air pipe 410 is connected to the outlet side of the blower. The air pipe 410 is at least partially located inside the treatment chamber 101 and below the blade assembly. The air pipe 410 has several air holes 411 on the lower side of the blade assembly. By blowing air through the blower and then blowing air through the air holes 411 to the bottom of the inner side of the treatment chamber 101, the wastewater in the treatment chamber 101 can be stirred by the gas, thereby mixing the wastewater with the treatment agent. Since the air holes 411 are located on the lower side of the blade assembly, the wastewater in the treatment chamber 101 can be fully stirred.

[0028] The reaction tank of this utility model embodiment is equipped with a stirring device 300 including a blade assembly and a pneumatic mixing device 400, and the air hole 411 is set on the lower side of the blade assembly. Thus, the wastewater can be fully and evenly stirred by both mechanical stirring and pneumatic stirring at the same time, so that the wastewater and the treatment agent are fully and evenly mixed, thereby improving the treatment effect of the wastewater.

[0029] Based on the above embodiments, it is conceivable that the reaction tank of this embodiment can be operated by manual addition of the treatment agent or by automatic addition of the treatment agent. When the treatment agent is added manually, a switchable transparent panel can be provided at the treatment agent addition port 201 to facilitate addition of the treatment agent and to facilitate observation. When the treatment agent is added automatically, the treatment agent addition port 201 can be connected to an automatic feeding device, which adds the treatment agent into the treatment chamber 101 at regular intervals and in quantitative quantities. Various existing devices can be used for the automatic feeding device, which will not be described in detail in this embodiment.

[0030] Based on the above embodiments, it is conceivable that since the motor 320 is located outside the groove 100, and the rotating shaft 310 needs to pass through the groove 100, a sealing structure needs to be set at the position where the rotating shaft 310 passes through the groove 100. The sealing structure here can be a mechanical seal, which is a pair (or several pairs) of precision friction pairs (stationary ring and rotating ring) perpendicular to the axis. Of course, the sealing structure here can also be a traditional packing seal. The above sealing forms are all common forms, so they will not be described in detail here.

[0031] In some embodiments of this utility model, at least some of the vents 411 have downward openings, so that the wastewater at the bottom of the treatment chamber 101 can be fully agitated, allowing the wastewater in the treatment chamber 101 to flow fully and mix evenly with the treatment agent.

[0032] Reference Figure 2 and Figure 3 As shown, in some embodiments of this utility model, the air pipe 410 includes a first pipe 412, a second pipe 413, and a third pipe 414. The first pipe 412 is horizontally disposed on the lower side of the blade assembly and is provided with the aforementioned air hole 411; the second pipe 413 is connected to one end of the first pipe 412 and extends vertically to the upper part of the trough 100; the third pipe 414 is connected to the upper end of the second pipe 413 and extends horizontally to the outer side of the trough 100, and is used to connect to a fan; wherein, the upper edge of the trough 100 is provided with a notch 103 for the third pipe 414 to pass through. By adopting the above-mentioned structural configuration, compared with drilling holes in the side wall of the trough 100 for the air pipe 410 to pass through, it is easier to disassemble and assemble the air pipe 410. For example, when it is necessary to disassemble the air pipe 410, the cover plate 200 can be removed first, and then the air pipe 410 can be removed from the processing chamber 101.

[0033] Reference Figure 3 As shown, in some embodiments of this utility model, multiple sets of air holes 411 are arranged at intervals along the axial direction of the first pipe 412. Each set of air holes 411 includes multiple air holes 411 arranged at intervals along the circumference of the first pipe 412. This arrangement can fully and evenly agitate the wastewater at each location, resulting in a good stirring effect.

[0034] Reference Figure 3 As shown, in some embodiments of this utility model, a first snap-fit ​​part 110 is installed on the bottom wall of the processing chamber 101 of the tank 100, and a second snap-fit ​​part 120 is installed on one side wall of the processing chamber 101. The first snap-fit ​​part 110 is elastic and is provided with a first snap-fit ​​groove 111, which matches the first tube 412 for the first tube 412 to be snapped in. The second snap-fit ​​part 120 is elastic and is provided with a second snap-fit ​​groove 121, which matches the second tube 413 for the second tube 413 to be snapped in. By providing the first snap-fit ​​part 110 and the second snap-fit ​​part 120, the air tube 410 is fixed to the tank 100 in a snap-fit ​​manner. On the one hand, this can prevent the air tube 410 from swinging randomly due to the influence of air pressure and water flow, and on the other hand, it can facilitate the quick installation and removal of the air tube 410.

[0035] Obviously, in order to improve installation stability, multiple first snap-fit ​​parts 110 are provided at intervals along the axial direction of the first tube 412 and avoid the air hole 411. Multiple second snap-fit ​​parts 120 are provided at intervals along the axial direction of the second tube 413. The specific number and position are selected according to the actual application.

[0036] Reference Figure 2 and Figure 3 As shown, in some embodiments of this utility model, the pneumatic mixing device 400 further includes a diversion section 420. The diversion section 420 has a diversion cavity, and an air inlet main pipe 421 and multiple diversion pipes 422 are respectively connected to both sides of the diversion cavity. The air inlet main pipe 421 is connected to the fan. Multiple air pipes 410 are provided and are arranged one-to-one with the diversion pipes 422. The third pipe 414 of the air pipe 410 is connected to the corresponding diversion pipe 422 through a pipe joint. In this embodiment, by setting the diversion section 420, the airflow from the fan can be evenly distributed to multiple diversion pipes 422, and then independently transported to different areas of the treatment chamber 101 through each air pipe 410, realizing centralized supply and decentralized transportation of gas. Moreover, the multiple air pipes 410 work together to form a uniform and comprehensive airflow field in the treatment chamber 101, realizing full and uniform agitation of wastewater.

[0037] Reference Figure 3 and Figure 4 As shown, in some embodiments of this utility model, the blade assembly includes two blade portions 330, which are symmetrically arranged on opposite radial sides of the rotating shaft 310. Each blade portion 330 includes a connecting plate 340 and a stirring blade 350. A limiting protrusion 341 is provided on one side of the connecting plate 340; the stirring blade 350 is fixed to the side of the connecting plate 340 opposite to the limiting protrusion 341. The connecting plate 340 of the two blade portions 330 is connected and fixed by a first bolt assembly 360. A limiting groove 311 is provided on the outer peripheral wall of the rotating shaft 310 for the limiting protrusion 341 to be inserted, thereby limiting the connecting plate 340 axially and circumferentially, and thus fixing the two blade portions 330 on the rotating shaft 310. This arrangement facilitates the disassembly of the blade assembly. During disassembly, only the first bolt assembly 360 between the two blade portions 330 needs to be removed to remove the two blade portions 330 from the rotating shaft 310, without disassembling the rotating shaft 310, which improves the convenience of maintenance.

[0038] In some specific embodiments, the first tube 412 is parallel to and horizontally offset from the rotating shaft 310, thereby avoiding interference from the rotating shaft 310 to the disassembly of the air tube 410 after the blade assembly is removed.

[0039] Reference Figure 3 and Figure 4As shown, in some embodiments of this utility model, the connecting plate 340 includes an arc-shaped plate 342 and two ear plates 343. The arc-shaped plate 342 is attached to the outer peripheral wall of the rotating shaft 310, and the inner peripheral wall of the arc-shaped plate 342 is provided with a limiting protrusion 341. The two ear plates 343 are respectively fixed to opposite ends of the arc-shaped plate 342 in the circumferential direction. The ear plates 343 are provided with holes that match the first bolt assembly 360. That is, the ear plates 343 of the two blade portions 330 are connected by the first bolt assembly 360 to connect the two blade portions 330. The structure is stable and reliable.

[0040] Reference Figure 1 As shown, in some embodiments of this utility model, the upper edge of the tank 100 is provided with a horizontally outwardly extending extension plate 102, and the cover plate 200 is connected to the extension plate 102 by a second bolt assembly, thereby fixing the cover plate 200 to the tank 100. This provides high structural stability and facilitates assembly and disassembly. In a further embodiment, refer to... Figure 2 As shown, the lower surface of the cover plate 200 is provided with an embedding part 202, which is embedded into the processing cavity 101 to horizontally position the cover plate 200 and the groove 100, thereby achieving a quick positioning effect when installing the second bolt assembly and reducing operation time. It is conceivable that the embedding part 202 can be a ring-shaped structure, adapted to the inner contour of the processing cavity 101, and a clearance recess is provided at the third tube 414.

[0041] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine different embodiments or examples described in this specification.

[0042] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A reaction tank, characterized in that, include: The tank has a processing cavity with an opening at the top; A cover plate is provided on the upper end of the tank, and the cover plate is provided with a treatment agent addition port; A stirring device includes a rotating shaft, a motor, and multiple blade assemblies. The rotating shaft is rotatably mounted on the tank, the motor is drivenly connected to the rotating shaft, and the multiple blade assemblies are mounted on the rotating shaft and located within the processing chamber. A pneumatic mixing device includes a fan and an air pipe. The air pipe is connected to the outlet side of the fan. The air pipe is at least partially located inside the processing chamber and below the blade assembly. The air pipe has a plurality of air holes on the lower side of the blade assembly.

2. The reaction vessel according to claim 1, characterized in that, At least some of the pores have downward-facing openings.

3. The reaction vessel according to claim 1, characterized in that, The trachea includes: The first tube is horizontally disposed on the lower side of the blade assembly, and the first tube is provided with the air hole; The second pipe is connected to one end of the first pipe and extends vertically to the upper part of the tank. The third pipe is connected to the upper end of the second pipe and extends horizontally to the outside of the trough, for connecting the fan; The upper edge of the groove has a notch for the third pipe to pass through.

4. The reaction vessel according to claim 3, characterized in that, Along the axial direction of the first tube, multiple sets of air holes are arranged at intervals, and each set of air holes includes multiple air holes arranged at intervals along the circumference of the first tube.

5. The reaction vessel according to claim 3, characterized in that, The tank has a first snap-fit ​​part installed on the bottom wall of the processing chamber and a second snap-fit ​​part installed on one side wall of the processing chamber. The first snap-fit ​​part is elastic and has a first snap-fit ​​groove for the first tube to be snapped in. The second snap-fit ​​part is elastic and has a second snap-fit ​​groove for the second tube to be snapped in.

6. The reaction vessel according to claim 3, characterized in that, The pneumatic mixing device further includes: The flow divider has a flow divider cavity, and an air intake main pipe and multiple flow divider pipes are respectively connected to both sides of the flow divider cavity. The air intake main pipe is connected to the fan. The air tube and the shunt tube are respectively arranged in a one-to-one correspondence, and the third tube is connected to the shunt tube through a tube connector.

7. The reaction vessel according to claim 1, characterized in that, The blade assembly includes two blade sections, which are symmetrically arranged on opposite radial sides of the rotating shaft. Each blade section includes: The connecting plate is equipped with a limit protrusion; The stirring blade is fixed to the side of the connecting plate opposite to the limiting protrusion. The connecting plates of the two blade sections are connected by a first bolt assembly, and the outer peripheral wall of the rotating shaft is provided with a limiting groove for the limiting protrusion to be inserted to limit the connecting plate axially and circumferentially.

8. The reaction vessel according to claim 7, characterized in that, The connecting plate includes: An arc-shaped plate is fitted to the outer peripheral wall of the rotating shaft, and the limiting protrusion is provided on the inner peripheral wall of the arc-shaped plate; Two ear plates are fixed to opposite ends of the arc-shaped plate in the circumferential direction, and the ear plates are provided with holes that match the first bolt assembly.

9. The reaction vessel according to claim 1, characterized in that, The upper edge of the trough is provided with a horizontally outward extending plate, and the cover plate is connected to the extending plate by a second bolt assembly.

10. The reaction vessel according to claim 9, characterized in that, The lower surface of the cover plate is provided with an embedding part, which is embedded in the processing cavity to horizontally position the cover plate and the groove.

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