Slurry acceleration filtration device

Abstract

The utility model provides a kind of slurry accelerated filtration device, it is related to battery processing field, including filter screen and rotary presser;The filter screen includes support and filter cloth, the support is hollow cylinder, and the filter cloth is fixed in one end of support;The rotary presser includes shell cylinder, guide slurry cylinder and flow guide plate, the shell cylinder is installed in the end of support away from the filter screen and can rotate;The guide slurry cylinder is coaxial with the shell cylinder, and the guide slurry cylinder is hollow cylinder, and the inner wall of guide slurry cylinder forms feed inlet;The projection of the flow guide plate in the radial section of the shell cylinder is sector, and the outside and inside of the flow guide plate are connected with the inner wall of the shell cylinder and the outer wall of the guide slurry cylinder respectively, and the bottom surface of the flow guide plate gradually approaches the bottom end surface of the shell cylinder from one end to the other end.The flow guide plate gives slurry downward pressure when shell cylinder rotates, and slurry is pushed through filter screen, to accelerate filtration speed, and improve production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of battery processing technology, and in particular to a slurry accelerated filtration device. Background Technology

[0002] During battery manufacturing, the stirred slurry needs to be uniformly coated onto metal foils (aluminum foil for the positive electrode and copper foil for the negative electrode). This process is completed by a coating machine, which needs to precisely control the thickness and uniformity of the coating, as these factors have a significant impact on the performance of lithium batteries. The slurry should also be filtered before coating to ensure the thickness and uniformity of the coating.

[0003] In existing technologies, on high-volume slurry coating lines, the slurry filtration process typically involves a pump drawing the mixed slurry into a pipeline, where it passes through an industrial filter under pump pressure, and then through another pipeline into a transfer container. In processes with smaller slurry volumes, the slurry is transferred from the mixing equipment to a filter screen and passes through under its own gravity; manually squeezing the screen can slightly increase the filtration speed. However, on high-volume slurry lines, the pipelines and filters have large internal volumes, resulting in significant residue and waste when filtering small amounts of slurry. Furthermore, the slurry's limited gravity and slow flow rate without external force lead to low filtration efficiency. Utility Model Content

[0004] In view of this, the present invention proposes a slurry acceleration filtration device to solve the technical problems mentioned in the background art, such as the large internal volume of pipes and filters in large-volume homogenization lines, resulting in a large amount of residue and serious waste when used to filter small amounts of slurry; and the limited gravity of the slurry, resulting in slow flow speed and low filtration efficiency without other external forces.

[0005] The technical solution of this utility model is implemented as follows:

[0006] This utility model provides a slurry accelerated filtration device, including a filter screen and a rotary pressure device, wherein:

[0007] The filter screen includes a support and a filter cloth. The support is in the shape of a hollow cylinder, and the filter cloth is fixed to one end of the support.

[0008] The rotary pressurizer includes a shell, a guide cylinder, and a guide plate. The shell is mounted on the end of the support away from the filter screen and is rotatable. The guide cylinder is coaxial with the shell and is hollow. The inner wall of the guide cylinder forms a feed inlet. The projection of the guide plate on the radial section of the shell is fan-shaped. The outer and inner sides of the guide plate are respectively connected to the inner wall of the shell and the outer wall of the guide cylinder. The bottom surface of the guide plate gradually approaches the bottom end face of the shell from one end to the other.

[0009] Based on the above technical solutions, preferably, the rotary pressurizer further includes a collection chamber, which is connected to the end of the guide plate closest to the bottom end face of the shell.

[0010] Based on the above technical solutions, preferably, the collection chamber includes a first baffle and a second baffle installed on the guide plate. The first baffle is located at the lowest end of the guide plate and its height direction is parallel to the axis of the shell. The bottom of the first baffle is higher than the bottom end face of the shell. The two ends of the second baffle are respectively connected to the inner wall of the shell and the outer wall of the guide tube. The bottom of the second baffle is flush with the bottom end face of the guide tube and the bottom end face of the shell.

[0011] Based on the above technical solutions, preferably, the bottom of the second baffle is close to the surface of the filter cloth so as to scrape off the filter residue on the surface of the filter cloth during rotation.

[0012] Based on the above technical solutions, preferably, a flow chamber is formed between the outer wall of the guide cylinder and the inner wall of the shell cylinder, and the peripheral wall of the guide cylinder is provided with an opening connecting the flow chamber.

[0013] Based on the above technical solutions, preferably, the second baffle is arranged along the tangential direction of the slurry guide cylinder and located at the edge of the opening.

[0014] Based on the above technical solutions, preferably, the top surface of the guide plate is provided with an observation window.

[0015] Based on the above technical solutions, preferably, the guide plate has grooves on both sides of the observation window; it also includes observation glass, which is inserted into the grooves.

[0016] Based on the above technical solutions, preferably, the cross-section of the chute is T-shaped, the cross-section of the observation glass is T-shaped, and the top surface of the observation glass is flush with the top surface of the guide plate.

[0017] Based on the above technical solutions, preferably, the bottom surface of the guide plate, closest to the bottom end face of the shell, smoothly transitions with the inner wall of the shell.

[0018] The slurry accelerated filtration device of this invention has the following advantages over the prior art:

[0019] (1) The shell is installed on the support at the end away from the filter screen and can rotate; the inner wall of the guide cylinder forms a feed port; the outer and inner sides of the guide plate are respectively connected to the inner wall of the shell and the outer wall of the guide cylinder, and the bottom surface of the guide plate gradually approaches the bottom surface of the shell from one end to the other. When the shell rotates, the guide plate applies downward pressure to the slurry, pushing the slurry through the filter screen, which speeds up the filtration and improves the production efficiency.

[0020] (2) By connecting the collection chamber to the end of the guide plate closest to the bottom surface of the shell, residual large particles can be collected, reducing the impact of large particles clogging the filter cloth and extending the service life of the filter cloth.

[0021] (3) The first baffle is located at the lowest end of the guide plate and its height direction is parallel to the axis of the shell. The bottom of the first baffle is higher than the bottom end face of the shell, so that the residual large particles can enter the collection chamber from the first baffle. The two ends of the second baffle are respectively connected to the inner wall of the shell and the outer wall of the guide cylinder. The bottom of the second baffle is flush with the bottom end face of the guide cylinder and the bottom end face of the shell, which can prevent the filter residue from being mixed into the slurry again and improve the filtration efficiency.

[0022] (4) The bottom of the second baffle is close to the surface of the filter cloth to scrape off the filter residue on the surface of the filter cloth during rotation. The second baffle can scrape off large particles on the surface of the filter cloth, so that the filter cloth maintains good permeability and extends the service life of the filter cloth.

[0023] (5) An observation window is provided on the top surface of the guide plate. The observation window can be used to see the height of the slurry accumulated at the feed inlet. Adjust the feed speed and the rotation speed of the rotary pressurizer to keep the filter device in good operating condition. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a perspective view of the slurry accelerated filtration device in the embodiment of this utility model;

[0026] Figure 2 This is an exploded view of the slurry acceleration filtration device in the embodiment of this utility model;

[0027] Figure 3This is a cross-sectional view of the slurry accelerated filtration device in an embodiment of the present invention;

[0028] Figure 4 This is a schematic diagram of the filter screen in an embodiment of the present invention;

[0029] Figure 5 This is a perspective view of the rotary pressurizer in the embodiment of this utility model from a top viewpoint;

[0030] Figure 6 This is a perspective view of the rotary pressurizer in the embodiment of this utility model from the bottom view.

[0031] Figure 7 This is a schematic diagram of the structure of the observation glass in an embodiment of this utility model.

[0032] Figure labeling: 1-Filter screen, 2-Rotary pressure device, 3-Observation glass;

[0033] 11-Support, 12-Filter cloth;

[0034] 21-Shell cylinder, 22-Guide cylinder, 221-Inlet, 222-Opening, 23-Guide plate, 231-Observation window, 232-Chutter, 24-Collection bin, 241-First baffle, 242-Second baffle. Detailed Implementation

[0035] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0036] Reference Figures 1-7 As shown in the embodiment of this utility model, a slurry accelerated filtration device is proposed, comprising a filter screen 1 and a rotary pressure device 2, wherein:

[0037] The filter 1 includes a support 11 and a filter cloth 12. The support 11 can be placed on the opening 222 of the receiving container. The support 11 is in the shape of a hollow cylinder. The filter cloth 12 is fixed to one end of the support 11. The filter cloth 12 is installed at the bottom end of the support 11.

[0038] The rotary pressurizer 2 includes a shell 21, a guide cylinder 22, and a guide plate 23. The shell 21 is installed on the support 11 at the end away from the filter screen 1 and can rotate. The guide cylinder 22 is coaxial with the shell 21 and is hollow. The inner wall of the guide cylinder 22 forms a feed inlet 221. The projection of the guide plate 23 on the radial section of the shell 21 is fan-shaped. The outer and inner sides of the guide plate 23 are respectively connected to the inner wall of the shell 21 and the outer wall of the guide cylinder 22. The bottom surface of the guide plate 23 gradually approaches the bottom surface of the shell 21 from one end to the other.

[0039] It should be noted that the shell 21 is equipped with an independent rotation drive component, so that the shell 21 is installed on the top of the bracket 11 and partially extends into the bracket 11. The shell 21 and the bracket 11 have gaps in both the circumferential and axial directions, and the shell 21 and the bracket 11 can be set to be coaxial.

[0040] The slurry acceleration filtration device proposed in this embodiment is mounted on the support 11 at the end away from the filter screen 1 via the shell 21, which is rotatable; the inner wall of the slurry guide cylinder 22 forms an inlet 221; the outer and inner sides of the guide plate 23 are respectively connected to the inner wall of the shell 21 and the outer wall of the slurry guide cylinder 22, and the bottom surface of the guide plate 23 gradually approaches the bottom surface of the shell 21 from one end to the other. When the shell 21 rotates, the guide plate 23 applies downward pressure to the slurry, pushing the slurry through the filter screen 1, thereby accelerating the filtration speed and improving production efficiency.

[0041] In some embodiments, the rotary pressurizer 2 further includes a collection chamber 24, which is connected to the end of the guide plate 23 closest to the bottom surface of the shell 21. By providing the collection chamber 24 at the end of the guide plate 23, residual large particles can be collected, reducing the impact of large particles clogging the filter cloth 12 and extending the service life of the filter cloth 12.

[0042] In some embodiments, the collection chamber 24 includes a first baffle 241 and a second baffle 242 mounted on the guide plate 23. The first baffle 241, the second baffle 242, the bottom surface of the guide plate 23, and the inner wall of the shell 21 form the collection chamber 24. The first baffle 241 is located at the lowest end of the guide plate 23 and its height direction is parallel to the axial direction of the shell 21. The bottom of the first baffle 241 is higher than the bottom end face of the shell 21. The two ends of the second baffle 242 are respectively connected to the inner wall of the shell 21 and the outer wall of the slurry guide cylinder 22. The bottom of the second baffle 242 is flush with the bottom end face of the slurry guide cylinder 22 and the bottom end face of the shell 21. By ensuring that the bottom of the first baffle 241 is higher than the bottom end face of the shell 21, large residual particles can enter the collection chamber 24 from the first baffle 241. The second baffle 242 can prevent filter residue from being mixed back into the slurry, thereby improving filtration efficiency.

[0043] In some embodiments, the bottom of the second baffle 242 is close to the surface of the filter cloth 12 to scrape off filter residue from the surface of the filter cloth 12 during rotation. By scraping off filter residue from the surface of the filter cloth 12 during rotation of the second baffle 242, the filter cloth 12 maintains good permeability and extends its service life.

[0044] In some embodiments, a flow chamber is formed between the outer wall of the guide cylinder 22 and the inner wall of the shell 21, and the peripheral wall of the guide cylinder 22 is provided with an opening 222 communicating with the flow chamber. The slurry enters from the inlet 221 and enters the flow chamber through the opening 222. The flow chamber temporarily stores the slurry. By rotating the shell 21, the guide plate 23 applies downward pressure to the slurry, pushing the slurry through the filter screen 1.

[0045] In some embodiments, the second baffle 242 is arranged along the tangential direction of the guide cylinder 22 and located at the edge of the opening 222. This arrangement facilitates the connection between the second baffle 242 and the guide cylinder 22, closes the edge of the opening 222, isolates the end of the guide plate 23, and effectively isolates the collection chamber 24 from the feed inlet 221, thus fulfilling the function of the collection chamber 24 and improving the reliability and stability of the device.

[0046] In some embodiments, an observation window 231 is provided on the top surface of the guide plate 23. The observation window 231 allows observation of the slurry level accumulated at the feed inlet 221, enabling adjustment of the feed rate and the rotation speed of the rotary pressurizer 2 to maintain the filtration device in good operating condition. The observation window 231 is located on one side of the feed inlet 221 and allows observation of the state inside the feed inlet 221.

[0047] In some embodiments, the guide plate 23 has grooves 232 on both sides of the observation window 231; it also includes an observation glass 3, which is inserted into the grooves 232. The grooves 232 extend from the edge of the housing to the guide plate 23. The observation glass can be pushed from the outside to the inside and inserted into the grooves 232, thus realizing the installation of the observation glass 3 and the guide plate 23. The installation is relatively convenient and quick, and the disassembly is also convenient, which facilitates frequent cleaning of the observation glass 3 and ensures its light transmittance.

[0048] In some embodiments, the slide 232 has a T-shaped cross-section, the observation glass 3 has a T-shaped cross-section, and the top surface of the observation glass 3 is flush with the top surface of the guide plate 23. The T-shaped cross-section of the slide 232 makes the connection between the observation glass 3 and the guide plate 23 more stable. After installation, the top surface of the observation glass 3 is flush with the top surface of the guide plate 23, resulting in a neat and aesthetically pleasing overall surface that does not occupy space other than the rotary pressurizer 2, making the structure compact.

[0049] In some embodiments, such as Figure 3 As shown, the bottom surface of the guide plate 23, closest to the bottom end face of the shell 21, smoothly transitions with the inner wall of the shell 21. This smooth transition reduces eddies at this point, decreases resistance to slurry filtration, and improves filtration efficiency.

[0050] The working principle of the slurry acceleration filtration device in this embodiment is as follows: the bottom surface of the guide plate 23 gradually approaches the bottom surface of the shell 21 from one end to the other. By driving the shell 21 to rotate, the guide plate 23 applies downward pressure to the slurry, pushing the slurry through the filter screen 1, thus accelerating the filtration speed and improving production efficiency. The collection chamber 24 can collect residual large particles, reducing the impact of large particles clogging the filter cloth 12. During the rotation of the second baffle 242, the filter residue on the surface of the filter cloth 12 is scraped off, ensuring good permeability of the filter cloth 12 and extending its service life. The height of the slurry accumulated in the feed inlet 221 can be seen through the observation window 231. Adjusting the feed speed and the rotation speed of the rotary pressure device 2 keeps the filtration device in good operating condition. The observation window 231 is located on one side of the feed inlet 221, and the state inside the feed inlet 221 can be observed.

[0051] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A slurry accelerated filtration device, characterized in that, Includes a filter (1) and a rotary pressure device (2), wherein: The filter screen (1) includes a support (11) and a filter cloth (12). The support (11) is in the shape of a hollow cylinder, and the filter cloth (12) is fixed to one end of the support (11). The rotary pressurizer (2) includes a shell (21), a guide cylinder (22), and a guide plate (23). The shell (21) is installed on the support (11) at the end away from the filter screen (1) and can rotate. The guide cylinder (22) is coaxial with the shell (21) and is hollow. The inner wall of the guide cylinder (22) forms a feed inlet (221). The projection of the guide plate (23) on the radial section of the shell (21) is fan-shaped. The outer and inner sides of the guide plate (23) are respectively connected to the inner wall of the shell (21) and the outer wall of the guide cylinder (22). The bottom surface of the guide plate (23) gradually approaches the bottom surface of the shell (21) from one end to the other.

2. The slurry accelerated filtration device as described in claim 1, characterized in that, The rotary pressurizer (2) also includes a collection chamber (24), which is connected to the end of the guide plate (23) closest to the bottom surface of the shell (21).

3. The slurry accelerated filtration device as described in claim 2, characterized in that, The collection chamber (24) includes a first baffle (241) and a second baffle (242) installed on the guide plate (23). The first baffle (241) is located at the lowest end of the guide plate (23) and its height direction is parallel to the axis of the shell (21). The bottom of the first baffle (241) is higher than the bottom end face of the shell (21). The two ends of the second baffle (242) are respectively connected to the inner wall of the shell (21) and the outer wall of the guide cylinder (22). The bottom of the second baffle (242) is flush with the bottom end face of the guide cylinder (22) and the bottom end face of the shell (21).

4. The slurry accelerated filtration device as described in claim 3, characterized in that, The bottom of the second baffle (242) is close to the surface of the filter cloth (12) to scrape off the filter residue on the surface of the filter cloth (12) during rotation.

5. The slurry accelerated filtration device as described in claim 4, characterized in that, A flow chamber is formed between the outer wall of the guide cylinder (22) and the inner wall of the shell cylinder (21), and the peripheral wall of the guide cylinder (22) is provided with an opening (222) connecting the flow chamber.

6. The slurry accelerated filtration device as described in claim 5, characterized in that, The second baffle (242) is arranged along the tangential direction of the guide cylinder (22) and is located at the edge of the opening (222).

7. The slurry accelerated filtration device as described in claim 1, characterized in that, The top surface of the guide plate (23) is provided with an observation window (231).

8. The slurry accelerated filtration device as described in claim 7, characterized in that, The guide plate (23) has grooves (232) on both sides of the observation window (231); it also includes an observation glass (3), which is inserted into the grooves (232).

9. The slurry accelerated filtration device as described in claim 8, characterized in that, The cross-section of the chute (232) is T-shaped, the cross-section of the observation glass (3) is T-shaped, and the top surface of the observation glass (3) is flush with the top surface of the guide plate (23).

10. The slurry accelerated filtration device as described in claim 1, characterized in that, The bottom surface of the guide plate (23) is closest to the bottom end face of the shell (21) and smoothly transitions with the inner wall of the shell (21).

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