A ternary precursor solid-liquid separation device

Abstract

The utility model relates to ternary precursor processing technical field, concretely relates to a ternary precursor solid liquid separation device, include: filter press mechanism, as be used to carry out solid liquid separation to ternary precursor mother liquor's mechanism, filter press mechanism has the liquid discharge port, and the liquid discharge port opening faces down and is in the bottom end middle part of filter press mechanism, guide piece, locate in liquid discharge port below, including integrally arranged base part and guide part, guide part is placed in base part top, material receiving part has the liquid outlet hole and the open upward material receiving groove that communicate, are two and two material receiving parts are along the width direction of guide piece and divide in the symmetrical two sides of guide piece, two sieve parts, divide in two material receiving grooves and be used as the component for retaining solid medium in the liquid in material receiving groove, wherein, guide part is three prism shape with the isosceles triangle section, and guide part has two respectively inclined guide surfaces to two material receiving grooves. The application improves the solid liquid separation effect of ternary precursor mother liquor.

Description

Technical Field

[0001] This utility model relates to the field of ternary precursor processing technology, specifically to a ternary precursor solid-liquid separation device. Background Technology

[0002] In the manufacturing process of ternary lithium-ion batteries, the preparation of ternary precursors is a crucial step, as their purity, particle size distribution, and other indicators directly affect the performance of the final battery. Ternary precursors are typically generated through a liquid-phase precipitation reaction. After the reaction, a mixed system containing solid precursor particles and a liquid medium is formed. Therefore, solid-liquid separation is an indispensable step in subsequent processing.

[0003] Currently, filter presses are commonly used in industry for solid-liquid separation of ternary precursor mixtures. Filter presses are widely used in solid-liquid separation due to their relatively simple operation and large throughput. Their working principle is mainly to apply pressure, forcing the liquid in the mixture through a filter medium while retaining solid particles, thus achieving solid-liquid phase separation.

[0004] However, in practical applications, the separation effect of filter presses for solid-liquid separation of ternary precursors is often unsatisfactory. Specifically, a significant amount of solid media remains in the liquid portion after filtration. This solid media not only wastes liquid resources but may also cause equipment blockage and environmental pollution during subsequent recovery or discharge. In some cases, filter presses generate waste liquid. For example, after solid-liquid separation of ternary precursors, rinsing the filter cloth produces waste liquid containing ternary precursors, which the filter press cannot separate into solid and liquid components.

[0005] Therefore, how to overcome the shortcomings of the existing technology mentioned above has become the subject of this utility model. Utility Model Content

[0006] The purpose of this invention is to provide a ternary precursor solid-liquid separation device.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A ternary precursor solid-liquid separation device, comprising:

[0009] A filter press mechanism, used for solid-liquid separation of ternary precursor mother liquor, has a drain port that faces downward and is located at the bottom center of the filter press mechanism.

[0010] A guide component, located below the drain port, includes an integrally formed base portion and a guide portion, with the guide portion positioned on top of the base portion;

[0011] The receiving component has a connected liquid outlet and an upward-facing receiving groove, and there are two of them, with the two receiving components being arranged on symmetrical sides of the guide along the width direction of the guide.

[0012] Two screening components are respectively installed in the two receiving tanks and serve as components for retaining solid media in the liquid in the receiving tanks;

[0013] The guide portion is in the shape of a triangular prism with an isosceles triangular cross section, and has two guide surfaces that are inclined toward the two receiving grooves respectively.

[0014] In the above scheme, the filter press initially separates the solid and liquid components of the ternary precursor mother liquor. Then, the liquid portion (containing the solid medium) in the mother liquor is discharged through the drain port and falls onto the guide surface of the guide under gravity. It then flows into the receiving tank through the guide surface. The solid medium in the liquid portion is then retained by the sieve, and the remaining liquid is discharged through the outlet hole, thus achieving secondary solid-liquid separation and ensuring the solid-liquid separation effect.

[0015] The filter press mechanism can use an existing filter press. How the filter press achieves solid-liquid separation is an existing setup and will not be explained in detail here.

[0016] The drain outlet faces downwards and is located at the bottom center of the filter press mechanism, which facilitates the discharge of liquid portion from the mother liquor and also allows for the placement of two identical receiving components.

[0017] The guide component acts as a flow guide, avoiding the need to place the receiving component directly below the drain outlet, thus enabling flexible layout, and especially avoiding the limitation of using only a single receiving component. The guide component, in conjunction with two receiving components, reduces the frequency of operations, such as transferring solid media within the screening unit.

[0018] The guide part in the guide is an actual flow guiding structure. The guide part has two guide surfaces that are inclined towards the two receiving tanks respectively. These two guide surfaces are symmetrically arranged in the width direction of the guide, so that the liquid part in the mother liquor is evenly dispersed and flows to the two receiving tanks at basically the same rate. This avoids the situation where one screening part needs to be processed (cleaning solid media) while the other screening part does not meet the conditions for cleaning. Based on this, the frequency of transferring solid media in the screening part can be further reduced.

[0019] A further technical solution is provided, wherein the screening component includes:

[0020] A partition is provided in the corresponding receiving trough, dividing the corresponding receiving trough into an upper feeding area and a lower discharging area; the liquid outlet is connected to the lower discharging area;

[0021] Multiple filter sections are installed on the partition, and each filter section is evenly spaced along the length of the receiving trough; each filter section is provided with a number of filter holes for retaining solid media in the liquid in the receiving trough.

[0022] The partition portion has perforations corresponding to each of the filter portions.

[0023] After the liquid portion of the mother liquor flows into the receiving tank, it first enters the upper feeding area, and then enters the lower discharge area through the filtration section. The solid medium in the liquid portion is retained by the filtration section, while the remaining liquid is discharged through the filter holes and finally discharged through the liquid outlet, thus achieving secondary solid-liquid separation and ensuring the solid-liquid separation effect.

[0024] The actual screening structure in the screening unit is a filtration section. The filtration section has an opening through which the liquid portion of the mother liquor enters the filtration section and then flows into the lower discharge area. There is a gap between the filtration section and the bottom wall of the lower discharge area to avoid affecting the liquid flow. The filtration section can use a filter bag, and the specific type is not limited.

[0025] The partition section serves to support the filtration section and also acts as a flow guide. It divides the receiving tank into an upper feeding area and a lower discharge area. The liquid portion of the mother liquor accumulates in the upper feeding area to buffer and prevent leakage. This liquid portion can only enter the lower discharge area through the filtration section, which can be considered as the flow guide provided by the partition section.

[0026] In a further technical solution, the top end of the filter section is bent outward to form an annular bent sub-section;

[0027] The sieving component further includes a fixing part, which presses against the top of each of the annular bending parts to cooperate with the separating part to clamp and fix each of the annular bending parts from both sides; the fixing part is provided with openings corresponding to each of the filtering parts.

[0028] The partition can fix the filter section separately. This part uses the fixing part and the partition to fix the filter section. The filter section (i.e., the annular bent part) is clamped and fixed by the fixing part and the partition. The fixing method is simple and quick, and avoids damage to the filter section. It is suitable for scenarios with a large number of filter sections.

[0029] The openings on the fixing part are actually to prevent the liquid portion of the mother liquor from entering the filter part through the openings on the filter part. The fixing part can be a pressure plate.

[0030] In a further technical solution, the fixing part includes multiple separately arranged fixing sub-parts, any one of the fixing sub-parts being pressed against the top of at least one of the annular bent sub-parts. Each fixing sub-part is individually set and used independently, facilitating adjustment of only a portion of the filter part, such as convenient replacement of a single filter part.

[0031] In a further technical solution, the screening component also includes a connecting part, through which the fixing part is connected to the separating part. The connecting part can be a threaded structure such as a bolt, and is not specifically limited.

[0032] When the filter section (i.e., the annular bent section) is clamped and fixed by the fixing section and the partition section, the filter section is actually fixed by the gravity of the fixing section. The weight of the fixing section is key, and the fixing section needs to be relatively heavy to ensure the fixing effect. This will bring certain problems, such as easily damaging the filter section and increasing the difficulty of moving the fixing section. However, when using the connecting section, if a threaded connection is used, the ease of disassembly and assembly of the filter section can still be maintained, and the fixing section can be made lighter, avoiding the above problems.

[0033] In a further technical solution, the screening component also includes multiple sealing parts, with one of the sealing parts fitted on the outside of any one of the filter parts to prevent liquid from flowing into the lower discharge area through the gap between the filter part and the corresponding perforated hole wall, thereby further ensuring the solid-liquid separation effect.

[0034] In a further technical solution, the bottom wall of the receiving trough is inclined, and the liquid outlet is connected to the lower end of the bottom wall of the receiving trough to ensure the discharge rate of the liquid flowing into the lower discharge area.

[0035] A further technical solution includes a guide tube, one end of which covers the opening of the liquid outlet, and the other end extends along the length of the receiving component. In this part, the guide tube can be regarded as an L-shaped tube, which facilitates docking with subsequent recovery devices to recover liquid.

[0036] The terms "first," "second," etc., used in this article do not specifically refer to order or sequence, nor are they intended to limit this case; they are merely used to distinguish components or operations described using the same technical terms.

[0037] The terms "connection" or "positioning" as used in this article can refer to two or more components or devices making direct physical contact with each other, or making indirect physical contact with each other, or to two or more components or devices operating or moving with each other.

[0038] The terms “include,” “including,” and “have” used in this article are all open-ended, meaning they include but are not limited to.

[0039] Unless otherwise specified, the terms used herein generally have their ordinary meaning in the context of the art, the subject matter, and the specific context. Certain terms used to describe this case will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing this case.

[0040] The terms “front,” “back,” “up,” “down,” “left,” and “right” used in this article are directional terms. In this case, they are only used to describe the positional relationship between the structures and are not intended to limit the specific direction of the protection scheme or its actual implementation.

[0041] The working principle and advantages of this utility model are as follows:

[0042] The filter press initially separates the solid and liquid components of the ternary precursor mother liquor. Then, the liquid portion (containing the solid medium) in the mother liquor is discharged through the drain port and falls onto the guide surface of the guide under gravity. It then flows into the receiving tank through the guide surface. The solid medium in the liquid portion is then retained by the sieve, and the remaining liquid is discharged through the outlet hole, thus achieving secondary solid-liquid separation and ensuring the solid-liquid separation effect.

[0043] The drain outlet faces downwards and is located at the bottom center of the filter press mechanism, which facilitates the discharge of liquid portion from the mother liquor and also allows for the placement of two identical receiving components.

[0044] The guide component acts as a flow guide, avoiding the need to place the receiving component directly below the drain outlet, thus enabling flexible layout, and especially avoiding the limitation of using only a single receiving component. The guide component, in conjunction with two receiving components, reduces the frequency of operations, such as transferring solid media within the screening unit.

[0045] The guide part in the guide is an actual flow guiding structure. The guide part has two guide surfaces that are inclined towards the two receiving tanks respectively. These two guide surfaces are symmetrically arranged in the width direction of the guide, so that the liquid part in the mother liquor is evenly dispersed and flows to the two receiving tanks at basically the same rate. This avoids the situation where one screening part needs to be processed (cleaning solid media) while the other screening part does not meet the conditions for cleaning. Based on this, the frequency of transferring solid media in the screening part can be further reduced.

[0046] In summary, this application ensures solid-liquid separation while reducing the frequency of transferring the separated solid medium, thus avoiding problems such as waste of liquid phase resources, equipment blockage, and environmental pollution. Attached Figure Description

[0047] Figure 1 This is a schematic diagram of the ternary precursor solid-liquid separation device according to an embodiment of the present invention;

[0048] Figure 2 for Figure 1 A structural diagram omitting the guide components;

[0049] Figure 3 This is a schematic diagram of the structure of the receiving component and the screening component in an embodiment of this utility model;

[0050] Figure 4 for Figure 3Top view;

[0051] Figure 5 This is a partial structural schematic diagram of the sieve component according to an embodiment of the present invention.

[0052] In the above attached figures: 1. Filter press mechanism; 11. Drain outlet; 2. Guide component; 21. Base part; 22. Guide part; 221. Guide surface; 3. Receiving component; 31. Drain outlet; 32. Receiving trough; 321. Upper feeding area; 322. Lower discharge area; 41. Separator; 411. Perforation; 42. Filter part; 421. Annular bending part; 43. Fixing part; 431. Fixing part; 44. Connecting part; 45. Sealing part; 5. Guide pipe. Detailed Implementation

[0053] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0054] Example: The present invention will be clearly described below with illustrations and detailed description. Any person skilled in the art who understands the examples of the present invention can make changes and modifications based on the technology taught in the present invention without departing from the spirit and scope of the present invention.

[0055] The terminology used herein is for the purpose of describing specific embodiments only and is not intended to limit the scope of this work. Singular forms such as “a,” “this,” “this,” “the,” and “the” as used herein also include plural forms.

[0056] See Figures 1-5 A ternary precursor solid-liquid separation device, comprising:

[0057] The filter press mechanism 1, as a mechanism for solid-liquid separation of ternary precursor mother liquor, has a drain port 11, which faces downward and is located at the bottom center of the filter press mechanism 1.

[0058] Guide 2, located below the drain port 11, includes an integrally formed base part 21 and guide part 22, with the guide part 22 placed on top of the base part 21;

[0059] The receiving component 3 has a connected liquid outlet hole 31 and an upward-facing receiving groove 32. There are two receiving components 3, and the two receiving components 3 are respectively arranged on the symmetrical sides of the guide component 2 along the width direction of the guide component 2.

[0060] Two screening components are respectively disposed in the two receiving tanks 32, and serve as components for retaining solid media in the liquid in the receiving tanks 32;

[0061] The guide portion 22 is in the shape of a triangular prism with an isosceles triangular cross section, and the guide portion 22 has two guide surfaces 221 that are inclined toward the two receiving grooves 32 respectively.

[0062] This embodiment describes the separation of solid media from the liquid portion of the mother liquor, and is not limited to its use in separating ternary precursors from waste liquid to improve the recovery rate of ternary precursors.

[0063] The filter press 1 initially separates the solid and liquid components of the ternary precursor mother liquor. Then, the liquid portion (containing solid media) in the mother liquor is discharged through the drain port 11 and falls onto the guide surface 221 of the guide member 2 under the action of gravity. Then, it flows into the receiving tank 32 through the guide surface 221. The solid media in the liquid portion is then retained by the sieve, and the remaining liquid is discharged through the outlet hole 31, realizing secondary solid-liquid separation and ensuring the solid-liquid separation effect.

[0064] The filter press mechanism 1 can be an existing filter press. How the filter press achieves solid-liquid separation is an existing setting and will not be explained in detail here.

[0065] The drain port 11 faces downward and is located at the bottom center of the filter press mechanism 1, which facilitates the discharge of liquid portion from the mother liquor and also allows for the placement of two identical receiving parts 3.

[0066] The guide component 2 serves to guide the flow, avoiding the need to place the receiving component 3 directly below the drain port 11, thus enabling flexible layout, and especially avoiding the limitation of using only a single receiving component 3 for receiving materials. The guide component 2, together with two receiving components 3, reduces the frequency of some operations, such as the frequency of transferring solid media within the screening component.

[0067] The guide part 22 in the guide member 2 is an actual flow guiding structure. The guide part 22 has two guide surfaces 221 that are inclined toward the two receiving tanks 32 respectively. The two guide surfaces 221 are symmetrically arranged in the width direction of the guide member 2, so that the liquid part in the mother liquor is evenly dispersed and flows to the two receiving tanks 32 at basically the same rate. This avoids the situation where one screening member needs to be processed (cleaning solid media) while the other screening member does not meet the conditions for cleaning. Based on this, the frequency of transferring solid media in the screening member can be further reduced.

[0068] In some embodiments, a guide plate is provided on the top of the guide surface 221 or on the side facing the receiving groove 32 to enlarge the size of the guide surface 221.

[0069] It should be noted that if the filter cloth of the filter press becomes cloudy (it is necessary to determine whether the problem is with the filter cloth or the press), the original method required stopping the machine and manually checking each piece, which not only affected the output but also increased the workload.

[0070] By adding a drain port 11, the problem point (whether it is a problem with the filter cloth or the cloth press) can be roughly determined through the sampling port without stopping the machine, and then targeted inspection can be carried out, thereby reducing the impact on production and reducing the amount of manual labor.

[0071] See Figure 3 In this embodiment, the screening component includes:

[0072] A partition 41 is provided in the corresponding receiving trough 32, dividing the corresponding receiving trough 32 into an upper feeding area 321 and a lower discharging area 322; the liquid outlet 31 is connected to the lower discharging area 322.

[0073] Multiple filter sections 42 are installed on the partition 41, and each filter section 42 is evenly spaced along the length of the receiving tank 32; each filter section 42 is provided with a plurality of filter holes for retaining solid media in the liquid in the receiving tank 32.

[0074] The partition 41 is provided with perforations 411 corresponding to each of the filter parts 42.

[0075] After the liquid portion of the mother liquor flows into the receiving tank 32, it first enters the upper feeding area 321, and then enters the lower discharge area 322 through the filtration section 42. The solid medium in the liquid portion is retained by the filtration section 42, and the remaining liquid is discharged through the filter holes and finally discharged through the liquid outlet 31, realizing secondary solid-liquid separation and ensuring the solid-liquid separation effect.

[0076] The actual screening structure in the screening unit is a filter section 42. The filter section 42 has an opening through which the liquid portion of the mother liquor enters the filter section 42 and then flows into the lower discharge area 322. There is a gap between the filter section 42 and the bottom wall of the lower discharge area 322 to avoid affecting the liquid flow. The filter section 42 can be made of a filter bag, and the specific type is not limited.

[0077] The partition 41 serves to support the filter section 42 and also acts as a guide, dividing the receiving tank 32 into an upper feeding area 321 and a lower discharge area 322. The liquid portion of the mother liquor accumulates in the upper feeding area 321 to buffer and prevent leakage. This portion of liquid can only enter the lower discharge area 322 through the filter section 42, which can be regarded as the partition 41 guiding the flow.

[0078] See Figures 4-5 In this embodiment, the top end of the filter section 42 is bent outward to form an annular bent sub-section 421;

[0079] The sieving component further includes a fixing part 43, which is pressed against the top of each of the annular bending parts 421 to cooperate with the separating part 41 to clamp and fix each of the annular bending parts 421 from both sides; the fixing part 43 is provided with openings corresponding to each of the filtering parts 42.

[0080] The partition 41 can fix the filter 42 independently. In this part, the fixing part 43 and the partition 41 are used to fix the filter 42. A part of the filter 42 (i.e. the annular bent part 421) is clamped and fixed by the fixing part 43 and the partition 41. The fixing method is simple and quick, and avoids damage to the filter 42. It is suitable for scenarios where a large number of filter parts 42 are set.

[0081] The opening on the fixing part 43 is actually to prevent the liquid portion of the mother liquor from entering the filter part 42 through the opening on the filter part 42. The fixing part 43 can be a pressure plate.

[0082] This section improves the ease of recycling solid media.

[0083] See Figure 4 In this embodiment, the fixing part 43 includes a plurality of separately arranged fixing sub-parts 431, any one of the fixing sub-parts 431 being pressed onto the top of at least one of the annular bent sub-parts 421. Each fixing sub-part 431 is individually provided and used independently, which facilitates adjustment of only a portion of the filter part 42, such as convenient replacement of a single filter part 42.

[0084] See Figures 3-5 In this embodiment, the sieving component further includes a connecting portion 44, through which the fixing portion 43 is connected to the separating portion 41. The connecting portion 44 may be a threaded structure such as a bolt, and is not specifically limited thereto.

[0085] When the filter section 42 (i.e., the annular bent section 421) is clamped and fixed by the fixing section 43 and the partition section 41, the filter section 42 is actually fixed by the gravity of the fixing section 43. The weight of the fixing section 43 is key, and the fixing section 43 needs to be relatively heavy to ensure the fixing effect. This will bring certain problems, such as the filter section 42 being easily damaged, and the difficulty of moving the fixing section 43 will be increased. However, when the connecting section 44 is used, if a threaded connection is made, the ease of disassembly and assembly of the filter section 42 can still be maintained. At the same time, the fixing section 43 can be made lighter, avoiding the above problems.

[0086] See Figure 5 In this embodiment, the sieving component further includes multiple sealing parts 45. Each of the filter parts 42 is fitted with one of the sealing parts 45 on its outer side to prevent liquid from flowing into the lower discharge area 322 through the gap between the filter part 42 and the wall of the corresponding perforation 411, thereby further ensuring the solid-liquid separation effect.

[0087] The sealing part 45 can be sleeved on the outside of the annular bend portion 421 or located below the annular bend portion 421, whichever is more specific. The sealing part 45 can be an existing sealing component such as a sealing ring, whichever is more specific.

[0088] See Figure 3 In this embodiment, the bottom wall of the receiving trough 32 is inclined, and the liquid outlet 31 is connected to the lower end of the bottom wall of the receiving trough 32 to ensure the discharge rate of the liquid flowing into the lower discharge area 322.

[0089] See Figure 3 In this embodiment, a guide tube 5 is also included. One end of the guide tube 5 covers the opening of the liquid outlet 31, and the other end extends along the length of the receiving component 3. In this part, the guide tube 5 can be regarded as an L-shaped tube, which facilitates docking with the subsequent recovery device to recover the liquid.

[0090] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A ternary precursor solid-liquid separation device, characterized in that: include: The filter press (1) is a mechanism for solid-liquid separation of the mother liquor of the ternary precursor. The filter press (1) has a drain port (11) which is downward and located at the middle of the bottom end of the filter press (1). The guide (2) is located below the drain port (11) and includes an integrally formed base part (21) and guide part (22), with the guide part (22) placed on top of the base part (21); The receiving component (3) has a connected liquid outlet hole (31) and an upward-facing receiving groove (32), and there are two of them. The two receiving components (3) are respectively located on the symmetrical sides of the guide (2) along the width direction of the guide (2); Two screening components are respectively disposed in the two receiving tanks (32) and serve as components for retaining the solid medium in the liquid in the receiving tanks (32); The guide part (22) is a triangular prism with an isosceles triangular cross section, and the guide part (22) has two guide surfaces (221) that are inclined toward the two receiving grooves (32) respectively.

2. The ternary precursor solid-liquid separation device according to claim 1, characterized in that: The screening component includes: A partition (41) is provided in the corresponding receiving trough (32) and divides the corresponding receiving trough (32) into an upper feeding area (321) and a lower discharging area (322); the liquid outlet (31) is connected to the lower discharging area (322); Multiple filter sections (42) are installed on the partition (41), and each filter section (42) is evenly spaced along the length of the receiving tank (32); each filter section (42) is provided with a number of filter holes for retaining solid media in the liquid in the receiving tank (32); The partition (41) is provided with perforations (411) corresponding to each of the filter parts (42).

3. The ternary precursor solid-liquid separation device according to claim 2, characterized in that: The top of the filter section (42) is bent outward to form an annular bent subsection (421). The sieving component also includes a fixing part (43), which is pressed against the top of each of the annular bending parts (421) to cooperate with the separating part (41) to clamp and fix each of the annular bending parts (421) from both sides; the fixing part (43) has openings corresponding to each of the filtering parts (42).

4. The ternary precursor solid-liquid separation device according to claim 3, characterized in that: The fixing part (43) includes a plurality of separately arranged fixing sub-parts (431), any one of the fixing sub-parts (431) being pressed against the top of at least one of the annular bending sub-parts (421).

5. The ternary precursor solid-liquid separation device according to claim 3, characterized in that: The sieving component also includes a connecting part (44), and the fixing part (43) is connected to the separating part (41) through the connecting part (44).

6. The ternary precursor solid-liquid separation device according to claim 3, characterized in that: The sieving component also includes multiple sealing parts (45), and one of the sealing parts (45) is fitted on the outside of any one of the filtering parts (42).

7. A ternary precursor solid-liquid separation device according to any one of claims 1-6, characterized in that: The bottom wall of the receiving trough (32) is inclined, and the liquid outlet (31) is connected to the lower end of the bottom wall of the receiving trough (32).

8. A ternary precursor solid-liquid separation device according to any one of claims 1-6, characterized in that: It also includes a guide tube (5), one end of which covers the opening of the liquid outlet (31), and the other end extends along the length of the receiving part (3).

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