CN219517967U

CN219517967U - Filter and centrifugal filter device

Info

Publication number: CN219517967U
Application number: CN202320309536.6U
Authority: CN
Inventors: 陈智明; 刘小平; 陈高明; 胡玉梅
Original assignee: Biocomma Ltd
Current assignee: Biocomma Ltd
Priority date: 2023-02-24
Filing date: 2023-02-24
Publication date: 2023-08-15
Anticipated expiration: 2033-02-24

Abstract

The utility model discloses a filter and a centrifugal filter device, which comprises a main body, a filter membrane, a guide plate and a fixing frame, wherein the filter membrane is arranged on the main body; the main part is hollow structure and is formed with first opening and at least one second opening, the main part still is formed with locking portion and at least one first spacing portion, the filter membrane cover in the second opening, the guide plate closing cap in the second opening sets up to be formed with a plurality of water conservancy diversion holes, the mount is formed with cooperation portion and at least one second spacing portion, first spacing portion with the spacing fixedly of second spacing portion cooperation with the guide plate, make the guide plate compress tightly the filter membrane is fixed in the second opening part of main part, locking portion with cooperation portion cooperation with the mount install in the main part. According to the technical scheme, the occurrence of glue hole blocking caused by using the glue to fix the filter membrane is avoided, the yield of the product is improved, and the quality stability of the product is ensured.

Description

Filter and centrifugal filter device

Technical Field

The utility model relates to the technical field of laboratory consumables, in particular to a filter and a centrifugal filter device.

Background

Centrifugal filtration devices can be used to separate biological substances such as abzymes, nucleic acids, and proteins for concentration, desalination, purification, and fractionation purposes, such as concentrating urine, serum, plasma, and cerebrospinal fluid. The current centrifugal filter device adopts the mode of viscose to fix the filter membrane when producing, leads to the condition emergence in glue water shutoff hole easily, and the product defective rate is higher.

Disclosure of Invention

In order to solve the problems, the utility model provides a filter which can not cause the situation of glue water blocking and a centrifugal filter device comprising the filter, so as to ensure the quality stability of the produced centrifugal filter device.

To achieve the above object, the present utility model provides a filter comprising:

the main body is of a hollow structure and is provided with a first opening and at least one second opening, and the main body is also provided with a locking part and at least one first limiting part;

a filter membrane covering the second opening;

the guide plate is covered on the second opening, and a plurality of guide holes are formed in the guide plate; and

the fixing frame is provided with a matching part and at least one second limiting part;

the first limiting part is matched with the second limiting part to limit and fix the guide plate, so that the guide plate compresses the filter membrane to be fixed at the second opening of the main body, and the locking part is matched with the matching part to install the fixing frame on the main body.

Optionally, the first limiting part comprises a limiting groove, the second limiting part comprises a limiting step, and the guide plate is connected with the limiting groove in an interference fit manner.

Optionally, the locking portion includes a buckle, and the mating portion includes a clip hole.

Optionally, the main body is formed with one of a sliding groove and a sliding bar, and the fixing frame is formed with the other of the sliding groove and the sliding bar.

Optionally, the main body is formed with one of a positioning pin and a positioning hole, and the fixing frame is formed with the other of the positioning pin and the positioning hole.

Optionally, a concentrate receiving groove is formed in the cavity at an end of the body remote from the first opening.

Optionally, the guide plate is formed with a plurality of guide grooves, and a plurality of guide holes are communicated with the guide grooves.

Optionally, the main body is formed with two second openings, and the filter comprises two guide plates and two filter membranes;

the main body is of a hollow cylindrical structure, and the two second openings are oppositely arranged along two sides of the central axis of the main body respectively.

The utility model also provides a centrifugal filter device, which comprises a filter and a collecting pipe, wherein one end of the collecting pipe is opened and is provided with a collecting cavity, the filter is at least partially accommodated in the collecting cavity, and the filter is detachably connected with the collecting pipe;

the filter comprises a main body, a filter membrane, a guide plate and a fixing frame;

the main part is hollow structure and is formed with first opening and at least one second opening, the main part still is formed with locking portion and at least one first spacing portion, the filter membrane cover in the second opening, the guide plate closing cap in the second opening sets up to be formed with a plurality of water conservancy diversion holes, the mount is formed with cooperation portion and at least one second spacing portion, first spacing portion with the spacing fixedly of second spacing portion cooperation with the guide plate, make the guide plate compress tightly the filter membrane is fixed in the second opening part of main part, locking portion with cooperation portion cooperation with the mount install in the main part.

Optionally, the collecting tube further comprises a sealing cover, the collecting tube is provided with a threaded section, the sealing cover is provided with a threaded section corresponding to the collecting tube, the sealing cover is in threaded connection with the collecting tube, and the filter part is pressed on the end face of one end of the collecting tube, where the opening is formed, in a pressing mode.

In the technical scheme of the utility model, a first opening formed by a main body is used for pouring liquid to be filtered, a fixing frame is mounted on the main body in a matched manner through a locking part and a matching part, and a guide plate is fixed on the main body in a limited manner through a first limiting part and a second limiting part and compresses a filter membrane to cover the second opening; when the filter membrane is assembled, the filter membrane is covered on the second opening, the guide plate is covered on the second opening, the fixing frame is fixed on the main body through the matching part and the locking part, and the guide plate is installed and fixed through the first limiting part on the main body and the second limiting part on the fixing frame; the liquid to be filtered is separated out from the filter membrane through centrifugal action and flows out from the flow guide holes of the flow guide plate to the collecting pipe, so that the filtering operation is completed. Therefore, compared with the mode of fixing the filter membrane by using the viscose in the prior art, the technical scheme of the utility model avoids the situation of blocking holes by the viscose due to the use of the viscose for fixing the filter membrane, improves the yield of products and ensures the quality stability of the products; meanwhile, as mechanical assembly and installation are adopted, compared with the viscose fixing filter membrane, the production speed of the product can be improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic perspective view of a centrifugal filter device according to an embodiment of the present utility model;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a schematic cross-sectional view of FIG. 1;

FIG. 4 is an enlarged view of a portion of FIG. 3 at A;

FIG. 5 is an exploded view of the filter of FIG. 2;

FIG. 6 is a schematic perspective view of the main body of the filter of FIG. 5;

FIG. 7 is a schematic plan view of the body of the filter of FIG. 5;

FIG. 8 is a cross-sectional view taken along the direction B-B in FIG. 7;

fig. 9 is a schematic perspective view of the fixing frame in fig. 5.

Reference numerals illustrate:

reference numerals	Name of the name	Reference numerals	Name of the name
				100	Centrifugal filter	13	Deflector plate
1	Filter device	131	Deflector hole
				11	Main body	132	Diversion trench
111	A first opening	14	Fixing frame
				112	A second opening	143	Mating part
113	Locking part	143a	Clamping hole
				113a	Buckle	144	Second limit part
114	First limit part	144a	Spacing step
				114a	Limiting groove	145	Slide bar
115	Sliding chute	146	Positioning pin
				116	Positioning hole	2	Collecting pipe
117	Concentrate holding tank	21	Sealing cover
				12	Filter membrane

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

Referring to fig. 2 to 9, in order to solve the above-mentioned problems, the present utility model provides a filter 1, wherein the filter 1 includes a main body 11, a filter membrane 12, a baffle 13 and a fixing frame 14; the main body 11 is of a hollow structure and is provided with a first opening 111 and at least one second opening 112, the main body 11 is further provided with a locking part 113 and at least one first limiting part 114, the filter membrane 12 covers the second opening 112, the baffle 13 is covered on the second opening 112 and is provided with a plurality of guide holes 131, the fixing frame 14 is provided with a matching part 143 and at least one second limiting part 144, the first limiting part 114 and the second limiting part 144 are matched to limit and fix the baffle 13, the baffle 13 is pressed to be fixed at the second opening 112 of the main body 11, and the locking part 113 and the matching part 143 are matched to install the fixing frame 14 on the main body 11.

It is understood that the locking portion 113 may be a card hole, and the mating portion 143 may be a buckle; the locking portion 113 and the engaging portion 143 may be provided as magnets that attract each other; referring to fig. 4, 8 and 9, in an embodiment of the utility model, the locking portion 113 is configured as a buckle 113a, the matching portion 143 is configured as a clamping hole 143a, and the buckle 113a is matched with the clamping hole 143a so that the fixing frame 14 can be fixedly mounted on the main body 11, so as to provide a foundation for the fixed mounting of the baffle 13. Of course, the person skilled in the art can, without any creative effort, use the alternative of the embodiment to complete the mounting of the fixing frame 14 on the main body 11.

Further, the first limiting portion 114 and the second limiting portion 144 may be a clamping protrusion, and the baffle 13 may be formed with a clamping groove, where the clamping protrusion and the clamping groove cooperate to limit and fix the baffle 13 when the fixing frame 14 is fixed; referring to fig. 4, 8 and 9 again, in an embodiment of the utility model, the first limiting portion 114 includes a limiting groove 114a, the second limiting portion 144 includes a limiting step 144a, and the limiting groove 114a is in interference fit connection with the baffle 13, so as to ensure the connection stability and the sealing degree of the baffle 13 to the main body 11; the limit step 144a may be formed only at a position near the lower end of the fixing frame 14 to correspond to the limit groove 114 a; the limiting step 144a may also be formed with a plurality of limiting steps around the periphery of the second opening 112, so as to assist in fixing the baffle 13.

Referring to fig. 6 and 9, in an embodiment, the main body 11 is formed with a sliding groove 115, the fixing frame 14 is formed with a sliding bar 145, and the sliding groove 115 cooperates with the sliding bar 145 to provide an auxiliary guiding function for the cooperation installation of the fixing frame 14 and the main body 11; of course, the sliding strip 145 may be formed on the main body 11, and the sliding groove 115 may be correspondingly formed on the fixing frame 14.

Referring to fig. 6 and 9 again, in an embodiment, the main body 11 is formed with a positioning hole 116, the fixing frame 14 is formed with a positioning pin 146, and the positioning hole 116 cooperates with the positioning pin 146 to provide an auxiliary positioning function for the cooperation installation of the fixing frame 14 and the main body 11. As above, the positioning hole 116 may be formed in the fixing frame 14, and the positioning pin 146 may be correspondingly formed in the main body 11.

Referring to fig. 8, in one embodiment, a concentrate receiving groove 117 is formed in a cavity of an end of the main body 11 away from the first opening 111; the filtered material and unfiltered sample form a concentrate in the concentrate holding tank 117, and when concentrate is desired, a pipette is used to extend the pipette tip into the filter 1, where the tip of the pipette tip can be positioned in the concentrate holding tank 117 to facilitate transfer of concentrate as much as possible.

Referring to fig. 5, in an embodiment, the main body 11 is formed with two second openings 112, the filter 1 includes two guide plates 13 and two filter membranes 12, the main body 11 is a hollow cylindrical structure, and the two second openings 112 are disposed opposite to each other along two sides of a central axis of the main body 11, so as to improve the filtering efficiency. The baffle 13 is formed with a plurality of guiding grooves 132, a plurality of guiding holes 131 are connected to the guiding grooves 132, and the guiding grooves 132 are used for collecting filtrate to improve efficiency.

The utility model also provides a centrifugal filter device 100, the centrifugal filter device 100 comprises a filter 1 and a collecting pipe 2, one end of the collecting pipe 2 is opened and is provided with a collecting cavity, the filter 1 is at least partially accommodated in the collecting cavity, and the filter 1 is detachably connected with the collecting pipe 2; the specific structure of the filter 1 refers to the above embodiment, and since the centrifugal filter device 100 adopts all the technical solutions of all the embodiments, at least has all the beneficial effects brought by the technical solutions of the embodiments, and will not be described in detail herein.

The collecting tube 2 may be detachably connected to the filter 1 in a snap-fit connection, and in an embodiment of the present utility model, referring again to fig. 1 to 3, the collecting tube 2 further includes a cover 21, the collecting tube 2 is formed with a threaded section, the cover 21 is formed with a threaded section corresponding to the collecting tube 2, and the cover 21 is screwed to the collecting tube 2 and presses the filter 1 partially onto an end surface of the end of the collecting tube 2 where the opening is formed. The cap 21 serves to complete a seal to protect the filtrate in the filter 1 and the collection tube 2 from contamination and also to prevent leakage of filtrate from the first opening 111 during the centrifugal filtration operation. The collection tube 2 may be made of a transparent material to allow observation of the filtrate that has been collected.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims

1. A filter, comprising:

a filter membrane covering the second opening;

2. The filter of claim 1, wherein the first limiting portion comprises a limiting groove, the second limiting portion comprises a limiting step, and the deflector is in interference fit connection with the limiting groove.

3. The filter of claim 1, wherein the locking portion comprises a catch and the mating portion comprises a snap hole.

4. The filter of claim 1, wherein the body is formed with one of a sliding groove and a sliding bar, and the fixing frame is formed with the other of the sliding groove and the sliding bar.

5. The filter of claim 1, wherein the body is formed with one of a positioning pin and a positioning hole, and the fixing frame is formed with the other of the positioning pin and the positioning hole.

6. The filter of claim 1, wherein a concentrate-receiving channel is formed in a cavity in an end of the body remote from the first opening.

7. The filter of claim 1, wherein the baffle is formed with a plurality of flow channels, the plurality of flow channels being in communication with the flow channels.

8. The filter of claim 1, wherein the body is formed with two second openings, the filter comprising two baffles and two filters;

9. A centrifugal filter device comprising a filter according to any one of claims 1 to 8 and a collection tube, said collection tube being open at one end and defining a collection chamber, said filter being at least partially received in said collection chamber, said filter being removably connected to said collection tube.

10. The centrifugal filtration device of claim 9, wherein the collection tube further comprises a cap formed with a threaded section corresponding to the collection tube, the cap being screwed to the collection tube and pressing the filter portion onto an end face of the end of the collection tube where the opening is formed.