Filtering device and filtering system

Abstract

The utility model discloses a filtering device and a filtering system, the filtering device comprises: a first shell, the first shell defines an accommodating groove and a first channel, the accommodating groove is suitable for accommodating a filtering piece; the second shell is detachably connected with the first shell, part of the structure of the second shell can be contained in the containing groove, the filtering piece is clamped between the bottom wall of the containing groove and the second shell, the second shell defines a second channel, the first channel is communicated with the second channel, and the filtering piece is located between the first channel and the second channel. Therefore, the second shell is detachably connected with the first shell, so that the filtering device is convenient to disassemble and assemble, a part of structure of the second shell can be accommodated in the accommodating groove, and the filtering piece can be clamped between the bottom wall of the accommodating groove and the second shell, so that the filtering piece can be firmly fixed; the shifting and wrinkling risks of the filtering piece in the using process are reduced, the filtering performance of the filtering device can be improved, and therefore an experimenter can conveniently conduct impurity separation and filtering operation.

Description

TECHNICAL FIELD

[0001] The utility model relates to material detection technical field especially, it is a kind of filter device and filter system. BACKGROUND

[0002] In the related art, lithium ion battery positive electrode material production preparation process and its raw material will inevitably introduce some metal impurities, these metal impurities will affect the service life and safety of lithium ion battery, so metal impurities need to be separated and filtered out, however, the existing filter device is unreasonable in design, which leads to poor filtering effect of the filter device, and the filter device is difficult to disassemble and install, affecting the separation and filtration operation of metal impurities by experimenters. SUMMARY

[0003] The utility model aims at at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a filter device, which has good filtering effect, is easy to disassemble and install, and can facilitate the separation and filtration operation of impurities by experimenters.

[0004] The utility model further provides a filter system.

[0005] According to the filter device of the utility model, the second shell and the first shell are detachably connected, which can make the filter device easy to disassemble and assemble, the part structure of the second shell can be accommodated in the accommodating groove, and the filter element can be clamped between the bottom wall of the accommodating groove and the second shell, so that the filter element can be firmly fixed, the risk of displacement and creasing of the filter element during use is reduced, the filtering performance of the filter device is improved, and the separation and filtration operation of impurities by experimenters is facilitated.

[0006] According to the filter device of the utility model, the second shell and the first shell are detachably connected, which can make the filter device easy to disassemble and assemble, the part structure of the second shell can be accommodated in the accommodating groove, and the filter element can be clamped between the bottom wall of the accommodating groove and the second shell, so that the filter element can be firmly fixed, the risk of displacement and creasing of the filter element during use is reduced, the filtering performance of the filter device is improved, and the separation and filtration operation of impurities by experimenters is facilitated.

[0007] In some examples of the utility model, the second channel is located upstream of the first channel, the second channel includes a first sub-channel and a second sub-channel, the second sub-channel is communicated between the first sub-channel and the first channel, and the flow area of the second sub-channel gradually increases from the direction close to the first sub-channel to the direction away from the first sub-channel.

[0008] In some examples of the utility model, the second channel is located upstream of the first channel, the first channel comprises a third subchannel and a fourth subchannel, the third subchannel is communicated between the fourth subchannel and the second channel, and the flow area of the fourth subchannel gradually increases from the direction close to the third subchannel to the direction away from the third subchannel.

[0009] In some examples of the utility model, the diameter of the outlet of the second subchannel is D1, the diameter of the inlet of the first channel is D2, and the relationship 1

[0010] In some examples of the utility model, the angle between the generatrix of the side wall of the second subchannel and the center line of the filtering device is α, and the relationship 3 degrees ≤ α ≤ 25 degrees is met.

[0011] In some examples of the utility model, the angle between the generatrix of the side wall of the fourth subchannel and the center line of the filtering device is β, and the relationship 15 degrees ≤ β ≤ 75 degrees is met.

[0012] In some examples of the utility model, the second shell comprises a connecting portion and a shell body, the connecting portion is connected with the shell body and located on the side of the shell body away from the first shell, the cross-sectional area of the connecting portion is smaller than the cross-sectional area of the shell body, and the connecting portion and the shell body jointly define the second channel.

[0013] In some examples of the utility model, the shell body comprises a first subshell and a second subshell, the first subshell is connected between the second subshell and the connecting portion, at least part of the second subshell can be accommodated in the accommodating groove, and the second subshell is threadedly matched with the inner wall of the accommodating groove.

[0014] In some examples of the utility model, the second subshell comprises a first matching portion and a second matching portion, the first matching portion is connected between the second matching portion and the first subshell, the cross-sectional area of the first matching portion is larger than that of the second matching portion and has external threads, the accommodating groove comprises a first subgroove and a second subgroove, the first subgroove has internal threads matched with the external threads and is sized to fit the first matching portion, and the second subgroove is sized to fit the second matching portion.

[0015] The end face of the first matching portion can abut against the end face of the first subgroove.

[0016] In some examples of the utility model, the filtering device further comprises a sealing member, the inner wall of the second subgroove has a sealing groove, and part of the sealing member is accommodated in the sealing groove and clamped between the inner wall of the second subgroove and the second matching portion.

[0017] In some examples of the present application, the second housing is received in the end chamfer of the partial structure of the receiving groove.

[0018] In some examples of the present application, the outer peripheral wall of the first housing and the outer peripheral wall of the second housing each have an anti-skid portion.

[0019] The filter system according to the present application comprises a filter device, a driving member, a connecting pipe, a liquid storage container, and a receiving container, wherein the filter device is the filter device described above, the filter device is communicated with the liquid storage container through the connecting pipe, the driving member is used for conveying liquid in the liquid storage container to the filter device, and the receiving container is used for receiving liquid flowing out of the filter device.

[0020] Additional aspects and advantages of the present application will be given in part in the following description, become apparent from the following description, or be understood by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0021] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

[0022] Figure 1 is a schematic view of the first housing according to an embodiment of the present application;

[0023] Figure 2 is Figure 1 is a sectional view at A-A in FIG.

[0024] Figure 3 is a schematic view of the second housing according to an embodiment of the present application;

[0025] Figure 4 is Figure 3 is a sectional view at B-B in FIG.

[0026] REFERENCE NUMERALS:

[0027] First housing 10; receiving groove 11; first sub-groove 111; internal thread 1111; second sub-groove 112; first passage 12; third sub-passage 121; fourth sub-passage 122;

[0028] Second housing 20; second passage 21; first sub-passage 211; second sub-passage 212; connecting portion 22; housing body 23; first sub-housing 231; second sub-housing 232; first mating portion 2321; external thread 23211; second mating portion 2322; anti-skid portion 24. DETAILED DESCRIPTION

[0029] Embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are only used to explain the present application and cannot be understood as a limitation of the present application.

[0030] Reference will be made to Figures 1-4 The filter device according to the embodiments of the present application is described below.

[0031] As Figures 1-4 shown, the filter device according to the embodiments of the present application comprises a first housing 10 and a second housing 20.

[0032] The first housing 10 defines a containing groove 11 and a first channel 12, the containing groove 11 is suitable for containing a filter element (not shown in the figure); the second housing 20 is detachably connected with the first housing 10, part of the structure of the second housing 20 can be accommodated in the containing groove 11 and the filter element is clamped between the bottom wall of the containing groove 11 and the second housing 20, the second housing 20 defines a second channel 21, the first channel 12 and the second channel 21 are in communication and the filter element is located between the first channel 12 and the second channel 21.

[0033] As some embodiments of the present application, the filter device can be applied to the filtration of metal impurities in lithium ion battery positive electrode materials, by filtering the metal impurities in lithium ion battery positive electrode materials, it is conducive to the subsequent preparation of lithium ion batteries, and it is also conducive to the analysis and testing of metal impurities, the present application takes the filtration of metal impurities in lithium ion battery positive electrode materials as an example for description.

[0034] As some embodiments of the present application, a small amount of positive electrode material sample can be added to water, and after being mixed thoroughly, a suspension is formed, which can be filtered by the filter device, and then the metal impurities in the positive electrode material can be filtered out.

[0035] As some embodiments of the present application, the material of the first housing 10 and the second housing 20 can be but is not limited to PVC (Polyvinyl chloride) and the like.

[0036] Among them, the containing groove 11 and the first channel 12 are arranged in communication, the containing groove 11 can contain the filter element, and the filter element can filter the metal impurities in the suspension, that is, the metal impurities cannot pass through the filter element but will be left on the filter element.

[0037] The second housing 20 is detachably connected with the first housing 10, the connection mode of the second housing 20 and the first housing 10 can be but is not limited to threaded connection, clamping and the like, as some embodiments of the present application, the second housing 20 and the first housing 10 are connected by threaded connection.

[0038] The part structure of the second shell 20 can be accommodated in the accommodating groove 11, that is, the part structure of the second shell 20 can be matched with the accommodating groove 11, so that the part structure of the second shell 20 can be accommodated in the accommodating groove 11, and the part structure of the second shell 20 can clamp the filter element between the bottom wall of the accommodating groove 11 and the second shell 20, that is, the filter element is arranged on the bottom wall of the accommodating groove 11, and the filter element is clamped between the bottom wall of the accommodating groove 11 and the second shell 20.

[0039] During assembly, the filter element can be placed in the accommodating groove 11 first, then the part structure of the second shell 20 is inserted into the accommodating groove 11 to clamp the filter element between the bottom wall of the accommodating groove 11 and the second shell 20, and the second shell 20 is connected with the first shell 10 to complete the assembly. The size of the filter element can be matched with the size of the accommodating groove 11.

[0040] The second shell 20 defines a second channel 21, the first channel 12 and the second channel 21 are communicated, the accommodating groove 11 is communicated between the first channel 12 and the second channel 21, and the filter element is accommodated in the accommodating groove 11 and located between the first channel 12 and the second channel 21.

[0041] It should be noted that during filtration, the suspension liquid of the positive material can flow through the second channel 21 of the second shell 20, the filter element, the first channel 12 and then flow out of the filter device in sequence, the filter element can effectively filter the suspension liquid of the positive material, and the metal impurities in the suspension liquid are retained in the filter element, and by clamping the filter element between the bottom wall of the accommodating groove 11 and the second shell 20, the installation of the filter element is stable, the risk of displacement and creasing of the filter element during use is reduced, the filtering performance is improved, and the filtering effect of the filter device is improved. In addition, since the second shell 20 and the first shell 10 are detachably connected, the experimental personnel can easily disassemble the filter device, so that the experimental personnel can easily place, take out or replace the filter element, and the use convenience of the filter device is improved.

[0042] Therefore, by detachably connecting the second shell 20 and the first shell 10, the filter device can be easily disassembled, by accommodating the part structure of the second shell 20 in the accommodating groove 11 and clamping the filter element between the bottom wall of the accommodating groove 11 and the second shell 20, the filter element can be firmly fixed, the risk of displacement and creasing of the filter element during use is reduced, and the filtering performance of the filter device is improved, so that the experimental personnel can easily perform the impurity separation and filtration operation.

[0043] In some embodiments of the present application, Figure 3 and Figure 4As shown in FIGS. 1 and 2, the second channel 21 is located upstream of the first channel 12, and the second channel 21 comprises a first sub-channel 211 and a second sub-channel 212, and the second sub-channel 212 is communicated between the first sub-channel 211 and the first channel 12, and the flow area of the second sub-channel 212 gradually increases from the direction close to the first sub-channel 211 to the direction away from the first sub-channel 211.

[0044] As shown in FIGS. 1 and 2, the second channel 21 is located upstream of the first channel 12, and the second channel 21 comprises a first sub-channel 211 and a second sub-channel 212, and the second sub-channel 212 is communicated between the first sub-channel 211 and the first channel 12, and the flow area of the second sub-channel 212 gradually increases from the direction close to the first sub-channel 211 to the direction away from the first sub-channel 211.

[0045] As shown in FIGS. 1 and 2, the second channel 21 is located upstream of the first channel 12, and the second channel 21 comprises a first sub-channel 211 and a second sub-channel 212, and the second sub-channel 212 is communicated between the first sub-channel 211 and the first channel 12, and the flow area of the second sub-channel 212 gradually increases from the direction close to the first sub-channel 211 to the direction away from the first sub-channel 211.

[0046] As shown in FIGS. 1 and 2, the second channel 21 is located upstream of the first channel 12, and the second channel 21 comprises a first sub-channel 211 and a second sub-channel 212, and the second sub-channel 212 is communicated between the first sub-channel 211 and the first channel 12, and the flow area of the second sub-channel 212 gradually increases from the direction close to the first sub-channel 211 to the direction away from the first sub-channel 211.

[0047] In some embodiments of the present application, as shown in FIGS. 1 and 2, Figure 1 and Figure 2 As shown in FIGS. 1 and 2, the second channel 21 is located upstream of the first channel 12, and the second channel 21 comprises a first sub-channel 211 and a second sub-channel 212, and the second sub-channel 212 is communicated between the first sub-channel 211 and the first channel 12, and the flow area of the second sub-channel 212 gradually increases from the direction close to the first sub-channel 211 to the direction away from the first sub-channel 211.

[0048] As shown in FIGS. 1 and 2, the second channel 21 is located upstream of the first channel 12, and the second channel 21 comprises a first sub-channel 211 and a second sub-channel 212, and the second sub-channel 212 is communicated between the first sub-channel 211 and the first channel 12, and the flow area of the second sub-channel 212 gradually increases from the direction close to the first sub-channel 211 to the direction away from the first sub-channel 211.

[0049] The third sub-channel 121 is communicated between the second channel 21 and the fourth sub-channel 122, that is, the second channel 21, the third sub-channel 121, the fourth sub-channel 122 are sequentially communicated, and the fourth sub-channel 122 has one end close to the third sub-channel 121 and one end away from the third sub-channel 121, and the flow area of the fourth sub-channel 122 gradually increases from the direction close to the third sub-channel 121 to the direction away from the third sub-channel 121, in other words, the fourth sub-channel 122 is configured in a shape similar to an inverted funnel.

[0050] As some embodiments of the present application, the first sub-channel 211, the second sub-channel 212, the third sub-channel 121, and the fourth sub-channel 122 are sequentially communicated, and the suspension liquid can sequentially flow through the first sub-channel 211, the second sub-channel 212, the third sub-channel 121, and the fourth sub-channel 122 and flow out of the filter device.

[0051] By gradually increasing the flow area of the fourth sub-channel 122 from the direction close to the third sub-channel 121 to the direction away from the third sub-channel 121, the flow area when the suspension liquid flows out of the filter device can be increased, the suspension liquid can be quickly discharged, and thus the risk of the suspension liquid accumulating in the first channel 12 can be reduced, which is beneficial to making the suspension liquid more smoothly flow through the filter element from the second sub-channel 212 and flow into the third sub-channel 121, and thus the filtering performance of the filter device can be improved.

[0052] In some embodiments of the present application, the diameter of the outlet of the second sub-channel 212 is D1, the diameter of the inlet of the first channel 12 is D2, and the relationship 1

[0053] That is, the ratio of the diameter of the inlet of the first channel 12 to the diameter of the outlet of the second sub-channel 212 satisfies the relationship 1

[0054] Specifically, the ratio of the diameter of the inlet of the first channel 12 to the diameter of the outlet of the second sub-channel 212 can be any value between 1 and 1.5, for example, but not limited to, 1.1, 1.2, 1.3, etc., and as some embodiments of the present application, the ratio of the diameter of the inlet of the first channel 12 to the diameter of the outlet of the second sub-channel 212 is 1.2.

[0055] It needs to be explained that if D2 is less than D1, the impact force of the suspension liquid in the second sub-channel 212 is too large, and the filter is at risk of being destroyed. If D2 is greater than 1.5D1, the flow rate of the suspension liquid in the second sub-channel 212 is too low, which seriously affects the filtering efficiency of the filtering device. By making the ratio of the diameter of the inlet of the first channel 12 to the diameter of the outlet of the second sub-channel 212 be any value between 1 and 1.5, the size of the diameter of the inlet of the first channel 12 to the diameter of the outlet of the second sub-channel 212 can be reasonably designed, which can improve the filtering efficiency and reduce the risk of filter being destroyed, and is beneficial to improve the use reliability of the filtering device.

[0056] In some embodiments of the present application, the angle between the generatrix of the side wall of the second sub-channel 212 and the center line of the filtering device is α, which satisfies the relationship: 3 degrees ≤ α ≤ 25 degrees.

[0057] In some embodiments of the present application, the angle between the generatrix of the side wall of the second sub-channel 212 and the center line of the filtering device is α, which satisfies the relationship: 3 degrees ≤ α ≤ 25 degrees.

[0058] It needs to be explained that if α is too small, the impact force of the suspension liquid in the second sub-channel 212 is too large, which increases the risk of filter being destroyed. If α is too large, the potential energy of the suspension liquid in the second sub-channel 212 is too low, which is not conducive to the suspension liquid passing through the filter, and affects the filtering efficiency of the filtering device. By making the angle α between the generatrix of the side wall of the second sub-channel 212 and the center line of the filtering device be any value between 3 degrees and 25 degrees, the size of the angle between the generatrix of the side wall of the second sub-channel 212 and the center line of the filtering device can be reasonably set, which improves the filtering efficiency and use reliability.

[0059] In some embodiments of the present application, the angle between the generatrix of the side wall of the fourth sub-channel 122 and the center line of the filtering device is β, which satisfies the relationship: 15 degrees ≤ β ≤ 75 degrees.

[0060] The angle β between the generatrix of the side wall of the fourth sub-channel 122 and the center line of the filter device satisfies the relationship: 15 degrees ≤ β ≤ 75 degrees, that is, the angle β between the generatrix of the side wall of the fourth sub-channel 122 and the center line of the filter device can be any value between 15 degrees and 75 degrees, for example, the angle β between the generatrix of the side wall of the fourth sub-channel 122 and the center line of the filter device can be, but is not limited to, 15 degrees, 45 degrees, 75 degrees, and the like, and as some embodiments of the present application, the angle β between the generatrix of the side wall of the fourth sub-channel 122 and the center line of the filter device is 45 degrees.

[0061] It needs to be explained that if β is too small, the suspension liquid has the risk of gathering in the first channel 12, which is not conducive to the smooth flow of the suspension liquid through the filter element, and affects the filtering performance of the filter device, and if β is too large, the suspension liquid flowing out of the filter device is easy to splash, which is not convenient for collection. By setting the angle β between the generatrix of the side wall of the fourth sub-channel 122 and the center line of the filter device to be any value between 15 degrees and 75 degrees, the size of the angle between the generatrix of the side wall of the fourth sub-channel 122 and the center line of the filter device can be reasonably set, the filtering performance of the filter device can be improved, and the suspension liquid flowing out of the filter device can be conveniently collected.

[0062] In some embodiments of the present application, as shown in Figure 3 and Figure 4 The second shell 20 includes a connecting portion 22 and a shell body 23, the connecting portion 22 is connected with the shell body 23 and located on the side of the shell body 23 away from the first shell 10, the cross-sectional area of the connecting portion 22 is smaller than that of the shell body 23, and the connecting portion 22 and the shell body 23 jointly define the second channel 21.

[0063] The connecting portion 22 is connected with the shell body 23, and the connection manner of the connecting portion 22 and the shell body 23 can be, but is not limited to, welding, bolt connection, and the like, and as some embodiments of the present application, the connecting portion 22 and the shell body 23 are connected by welding. As some embodiments of the present application, the connecting portion 22 and the shell body 23 are integrally formed.

[0064] The connecting portion 22 is located on the side of the shell body 23 away from the first shell 10, that is, along the axial direction of the filter device (i.e. Figure 1 As shown in the Z direction), the shell body 23 has a side close to the first shell 10 and a side away from the first shell 10, the connecting portion 22 is located on the side of the shell body 23 away from the first shell 10, and the cross-sectional area of the connecting portion 22 is smaller than that of the shell body 23, that is, the diameter of the connecting portion 22 is smaller than that of the shell body 23. The connecting portion 22 and the shell body 23 jointly define the second channel 21. As some embodiments of the present application, the connecting portion 22 defines part of the first sub-channel 211, and as some embodiments of the present application, the connecting portion 22 defines the entire first sub-channel 211.

[0065] By making the second shell 20 include the connecting portion 22 and the shell body 23, and making the cross-sectional area of the connecting portion 22 smaller than the cross-sectional area of the shell body 23, the connecting portion 22 can be facilitated to be docked with the connecting pipe described below, the difficulty of assembling the filter device with other components can be reduced, and the adaptability of the filter device and the assembly efficiency with other components can be improved.

[0066] In some embodiments of the present application, as shown in Figure 3 and Figure 4 The shell body 23 includes a first sub-shell 231 and a second sub-shell 232, the first sub-shell 231 is connected between the second sub-shell 232 and the connecting portion 22, at least part of the second sub-shell 232 can be accommodated in the accommodating groove 11, and the second sub-shell 232 is threadedly matched with the inner wall of the accommodating groove 11.

[0067] The first sub-shell 231 is connected between the second sub-shell 232 and the connecting portion 22 along the axial direction of the filter device (i.e. the Z direction shown in Figure 1 The first sub-shell 231 is connected between the second sub-shell 232 and the connecting portion 22 along the axial direction of the filter device (i.e. the Z direction shown in

[0068] As some embodiments of the present application, part of the second sub-shell 232 can be accommodated in the accommodating groove 11, and as some embodiments of the present application, all of the second sub-shell 232 can be accommodated in the accommodating groove 11. Moreover, the second sub-shell 232 is threadedly matched with the inner wall of the accommodating groove 11.

[0069] By making at least part of the second sub-shell 232 accommodated in the accommodating groove 11, the second sub-shell 232 can be guided and matched with the first shell 10, the difficulty of matching the first shell 10 with the second shell 20 is reduced, by making the second sub-shell 232 threadedly matched with the inner wall of the accommodating groove 11, the first shell 10 and the second shell 20 can be detachably connected, the difficulty of disassembling the first shell 10 and the second shell 20 is reduced, and the first shell 10 and the second shell 20 can be firmly matched, in addition, a certain sealing effect can be achieved, and the risk of the suspension liquid flowing out from the gap between the inner wall of the accommodating groove 11 and the second sub-shell 23 can be reduced.

[0070] In some embodiments of the present application, as shown in Figures 1-4As shown, the second sub-shell 232 includes a first mating part 2321 and a second mating part 2322. The first mating part 2321 is connected between the second mating part 2322 and the first sub-shell 231. The cross-sectional area of ​​the first mating part 2321 is larger than that of the second mating part 2322 and has an external thread 23211. The receiving groove 11 includes a first sub-groove 111 and a second sub-groove 112. The first sub-groove 111 has an internal thread 1111 that can mate with the external thread 23211 and its size is adapted to the first mating part 2321. The size of the second sub-groove 112 is adapted to the second mating part 2322. The end face of the first mating part 2321 can abut against the end face of the first sub-groove 111.

[0071] The first mating part 2321 is connected between the second mating part 2322 and the first sub-housing 231. Specifically, it is connected along the axial direction of the filter device (i.e., Figure 1 (As shown in the Z direction), the first mating part 2321 is connected between the second mating part 2322 and the first sub-housing 231, so that the first sub-housing 231, the first mating part 2321 and the second mating part 2322 are arranged in sequence. The cross-sectional area of ​​the first mating part 2321 is larger than the cross-sectional area of ​​the second mating part 2322, and the first mating part 2321 has an external thread 23211.

[0072] The receiving tank 11 includes a first sub-tank 111 and a second sub-tank 112, along the axial direction of the filter device (i.e. Figure 1 (As shown in the Z direction), the first sub-slot 111 is further away from the first channel 12 than the second sub-slot 112. The first sub-slot 111 has an internal thread 1111 that can mate with the external thread 23211 of the first mating part 2321. Furthermore, the dimensions of the first sub-slot 111 are adapted to the first mating part 2321 so that the first mating part 2321 can thread-mate with the first sub-slot 111. The dimensions of the second sub-slot 112 are adapted to the second mating part 2322 so that the sealing performance of the second sub-slot 112 and the second mating part 2322 is better. It should be explained that the cross-sectional area of ​​the first sub-slot 111 is larger than the cross-sectional area of ​​the second sub-slot 112, and the end face of the first mating part 2321 can abut against the end face of the first sub-slot 111 to indicate that the installation is in place.

[0073] By making the cross-sectional area of the first fitting part 2321 larger than that of the second fitting part 2322 and having an external thread 23211, the second fitting part 2322 and the first fitting part 2321 can be fitted into the containing groove 11, and the first shell 10 and the second shell 20 can be tightly fitted by threads, which can improve the connection strength of the first shell 10 and the second shell 20. By making the end face of the first fitting part 2321 abut against the end face of the first sub-groove 111, when the end face of the first fitting part 2321 abuts against the end face of the first sub-groove 111, it indicates that the first shell 10 and the second shell 20 are mutually fitted in place, so that the first shell 10 and the second shell 20 have a foolproof effect when installed, which can reduce the risk of insecure installation and reduce the risk of suspension liquid leakage caused by the first shell 10 and the second shell 20 not being tightened, thereby improving the use reliability and use convenience of the filter device.

[0074] In some embodiments of the utility model, the filter device further comprises a sealing element, the inner wall of the second sub-groove 112 has a sealing groove, and part of the sealing element is accommodated in the sealing groove and clamped between the inner wall of the second sub-groove 112 and the second fitting part 2322, that is, part of the sealing element is accommodated in the sealing groove, and the sealing element is clamped between the inner wall of the second sub-groove 112 and the second fitting part 2322, which can improve the sealing performance of the containing groove 11, reduce the risk of suspension liquid flowing out from the gap between the inner wall of the containing groove 11 and the second sub-shell 23, and make the installation of the sealing element firm and reduce the risk of the sealing element moving or even falling off.

[0075] In some embodiments of the utility model, as shown in Figure 1 and Figure 3 , the end of the part of the second shell 20 accommodated in the containing groove 11 is chamfered, as some embodiments of the application, the end edge of the second fitting part 2322 away from the first fitting part 2321 is chamfered, as some embodiments of the application, the end edge of the second fitting part 2322 away from the first fitting part 2321 is chamfered, and the angle of the chamfer can be but is not limited to 30 degrees, 45 degrees, 60 degrees, etc., for example, the angle of the end edge of the second fitting part 2322 away from the first fitting part 2321 is 45 degrees. Such arrangement can eliminate the burrs at the end of the part of the second shell 20 accommodated in the containing groove 11, and also will not make the end of the part of the second shell 20 accommodated in the containing groove 11 have a sharp edge, which can reduce the risk of scratching and breaking the filter element by the second shell 20 during assembly.

[0076] In some embodiments of the utility model, as shown in Figure 1 and Figure 3As shown, the outer peripheral wall of the first shell 10 and the outer peripheral wall of the second shell 20 are each provided with an anti-skid portion 24, which is configured as an anti-skid protrusion as some embodiments of the present application, and is configured as an anti-skid groove as some embodiments of the present application.

[0077] As some embodiments of the present application, the outer peripheral wall of the first shell 10 is provided with a plurality of anti-skid portions 24, which are arranged circumferentially. As some embodiments of the present application, the outer peripheral wall of the second shell 20 is provided with a plurality of anti-skid portions 24, which are arranged circumferentially. Such arrangement can increase the surface roughness of the outer peripheral wall of the first shell 10 and the outer peripheral wall of the second shell 20, facilitating the screwing of the first shell 10 and the second shell 20 by the experimenter, reducing the difficulty of disassembling the filter device, and reducing the probability of the filter device slipping out of the hand.

[0078] The filter system according to the present application comprises: a filter device, a driving member, a connecting pipe, a liquid storage container, and a receiving container. The filter device is as described above. The filter device and the liquid storage container are communicated through the connecting pipe. The driving member is used to deliver the liquid in the liquid storage container to the filter device. The receiving container is used to receive the liquid flowing out of the filter device.

[0079] The driving member can be, but is not limited to, a peristaltic pump, an impeller pump, etc. As some embodiments of the present application, the driving member is an impeller pump. The connecting pipe can comprise a first sub-pipe and a second sub-pipe. The first sub-pipe is connected between the driving member and the filter device. The second sub-pipe is connected between the driving member and the liquid storage container. The driving member is used to deliver the liquid in the liquid storage container to the filter device. As some embodiments of the present application, the driving member is a peristaltic pump. The connecting pipe is connected between the filter device and the liquid storage container. The connecting pipe is arranged in the driving member, so as to deliver the liquid in the liquid storage container to the filter device through the driving member.

[0080] As some embodiments of the present application, in the process of using the filter system, the filter element is first placed in the accommodating groove 11. Then, the first shell 10 and the second shell 20 are assembled, and the connecting pipe is connected with the connecting portion 22. Next, the connecting pipe is arranged in the driving member and connected with the liquid storage container. Finally, the receiving container is communicated with the first channel 12 of the first shell 10, so that the filtering operation can be performed. The receiving container can be directly assembled with the first shell 10, or the receiving container can be placed below the first shell 10 to receive the suspension liquid flowing out of the first channel 12.

[0081] The arrangement can make the filter system reliable in use and simple in disassembly, and can make the filter device convenient to disassemble by detachably connecting the second shell 20 with the first shell 10, can firmly fix the filter element by enabling part of the structure of the second shell 20 to be accommodated in the accommodating groove 11 and enabling the filter element to be clamped between the bottom wall of the accommodating groove 11 and the second shell 20, thereby reducing the risk of the filter element shifting or wrinkling during use, and being favorable to improving the filtering performance of the filter device, so as to facilitate the separation and filtering operation of impurities by experimenters.

[0082] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0083] In the description of the present application, "first feature" and "second feature" can include one or more features.

[0084] In the description of the present application, "a plurality of" means two or more.

[0085] In the description of the present application, "above" or "below" of the first feature to the second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature between them.

[0086] In the description of the present application, "above", "upper" and "upper surface" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only means that the first feature is higher than the second feature in horizontal height.

[0087] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0088] Although the embodiments of the utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.

Claims

1. A filter device, characterized in that The application relates to a filter device. The first shell defines a containing groove and a first channel, the containing groove being suitable for containing a filter element; The second shell is detachably connected with the first shell, part of the structure of the second shell can be accommodated in the containing groove and the filter element is clamped between the bottom wall of the containing groove and the second shell, the second shell defines a second channel, the first channel and the second channel are communicated and the filter element is located between the first channel and the second channel.

2. The filter device of claim 1, wherein, The second channel is located upstream of the first channel, the second channel comprises a first sub-channel and a second sub-channel, the second sub-channel is communicated between the first sub-channel and the first channel, the flow area of the second sub-channel gradually increases from the direction close to the first sub-channel to the direction far from the first sub-channel.

3. The filter device of claim 1, wherein, The second channel is located upstream of the first channel, the first channel comprises a third sub-channel and a fourth sub-channel, the third sub-channel is communicated between the fourth sub-channel and the second channel, the flow area of the fourth sub-channel gradually increases from the direction close to the third sub-channel to the direction far from the third sub-channel.

4. The filter device of claim 2, wherein, The diameter of the outlet of the second sub-channel is D1, the diameter of the inlet of the first channel is D2, and the relationship 1 < D2 / D1 < 1.5 is satisfied.

5. The filter device of claim 2, wherein, The angle between the generatrix of the side wall of the second sub-channel and the center line of the filter device is alpha, and the relationship 3 degrees <= alpha <= 25 degrees is satisfied.

6. The filter device of claim 3, wherein, The angle between the generatrix of the side wall of the fourth sub-channel and the center line of the filter device is beta, and the relationship 15 degrees <= beta <= 75 degrees is satisfied.

7. The filter device of claim 1, wherein, The second shell comprises a connecting part and a shell body, the connecting part is connected with the shell body and is located on the side of the shell body far from the first shell, the cross-sectional area of the connecting part is smaller than the cross-sectional area of the shell body, and the connecting part and the shell body jointly define the second channel.

8. The filter device of claim 7, wherein, The shell body comprises a first sub-shell and a second sub-shell, the first sub-shell is connected between the second sub-shell and the connecting part, at least part of the second sub-shell can be accommodated in the containing groove, and the second sub-shell is threadedly matched with the inner wall of the containing groove.

9. The filter device of claim 8, wherein, The second sub-shell comprises a first matching part and a second matching part, the first matching part is connected between the second matching part and the first sub-shell, the cross-sectional area of the first matching part is larger than the cross-sectional area of the second matching part and has external threads, the containing groove comprises a first sub-groove and a second sub-groove, the first sub-groove has internal threads capable of being matched with the external threads and is sized to be matched with the first matching part, and the second sub-groove is sized to be matched with the second matching part. The end surface of the first matching part can abut against the end surface of the first sub-groove.

10. The filter device of claim 9, wherein, Further comprising: A sealing element, the inner wall of the second sub-groove has a sealing groove, part of the sealing element is accommodated in the sealing groove and clamped between the inner wall of the second sub-groove and the second matching part.

11. The filter device according to any one of claims 1-10, characterized in that, The end of the part of the structure of the second shell accommodated in the containing groove is chamfered.

12. The filter device according to any one of claims 1-10, characterized in that The outer peripheral wall of the first shell and the outer peripheral wall of the second shell both have anti-skid parts.

13. A filtration system characterized by, The application relates to a filter device, a driving member, a connecting pipe, a liquid storage container and a receiving container, wherein the filter device is the filter device according to any one of claims 1-12, the filter device is communicated with the liquid storage container through the connecting pipe, the driving member is used for conveying liquid in the liquid storage container to the filter device, and the receiving container is used for receiving liquid flowing out of the filter device. ​

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