CN215313170U

CN215313170U - Filtration formula centrifuge that filter membrane can quick detach

Info

Publication number: CN215313170U
Application number: CN202121467539.XU
Authority: CN
Inventors: 苏秀榕
Original assignee: Zhejiang Zhenghegu Biotechnology Co ltd
Current assignee: Zhejiang Zhenghegu Biotechnology Co ltd
Priority date: 2021-06-29
Filing date: 2021-06-29
Publication date: 2021-12-28
Anticipated expiration: 2031-06-29

Abstract

The utility model relates to the technical field of centrifuges, and discloses a filtering type centrifuge with a quickly-detachable filter membrane, which comprises a shell, a centrifuge barrel and a filtering structure, wherein the centrifuge barrel is rotationally arranged in the shell, the filtering structure is arranged on the outer ring wall of the centrifuge barrel, the rotation of the centrifuge barrel is controlled by a motor, an accommodating cavity for accommodating filtrate is formed between the shell and the centrifuge barrel, the filtering structure comprises the filter membrane and a sealing installation mechanism for driving the filter membrane to be detachably and hermetically arranged on the centrifuge barrel, the sealing installation mechanism comprises a filter outlet pipe convexly arranged on the outer ring wall of the centrifuge barrel, a baffle ring arranged in the filter outlet pipe and used for limiting the filter membrane to move towards the interior of the centrifuge barrel, and a limiting cover which is fixedly matched with the filter outlet pipe and used for pressing the filter membrane on the baffle ring and allowing the filtrate to pass through.

Description

Filtration formula centrifuge that filter membrane can quick detach

Technical Field

The utility model relates to the technical field of centrifuges, in particular to a filtering type centrifuge with a quickly-detachable filter membrane.

Background

Chinese patent with publication number CN209348846U discloses a filtration formula centrifuge convenient to wash, the power distribution box comprises a box body, it is provided with the filter frame to rotate in the box, the filter frame rotates the cooperation through a pivot and box and drives through a motor, be provided with the filtration pore on the wall of filter frame, the pivot upper end extends to in the filter frame and is provided with stirring vane and flexible silica gel scraper blade on it, flexible silica gel scraper blade and the laminating of filter screen inner wall, the stirring through stirring vane is that the liquid in the filter frame produces the vortex and filters the separation, and scrape the solid material of filter screen inner wall through flexible silica gel scraper blade with the probability that reduces the filter screen jam.

The filtration pore distributes on the outer rampart of whole filter frame, filter frame and the sealed normal running fit of pivot, and the cooperation is connected with the pivot electricity to the motor, lead to filter frame undetachable to set up in the box, in case the filter frame takes place to block up very difficult to wash, so, add flexible silica gel scraper blade in this scheme, aim at wanting to strike off the plug, nevertheless flexible silica gel scraper blade can only strike off the solid material on the filter screen inner wall but can not strike off in the filtration pore material and its when striking off the material on the filter screen can be with solid material extrusion in the filtration pore, filter frame's jam with higher speed, in case the jam can only spend a large amount of times to wash, so lead to filter efficiency low.

The centrifugal mode is adopted to filter water body with considerable efficiency, and can solve the defect of low filtering efficiency caused by the traditional water sample filtering mode by utilizing instruments such as a bacteria collector and the like, but the structure can not realize the enrichment of microorganisms in the water sample polluted by a small amount of microorganisms, so that an improvement space exists.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a filter type centrifuge capable of filtering water and enriching microorganisms, aiming at the problem that a filter structure in the filter type centrifuge in the background technology cannot realize microorganism enrichment.

In order to solve the technical problems, the utility model provides the following technical scheme: the utility model provides a filtration formula centrifuge that filter membrane can be dismantled fast, includes the shell, rotates the setting in the centrifugation bucket of shell and sets up the filtration on the outer rampart of centrifugation bucket, and the rotation of centrifugation bucket is controlled by a motor, is formed with the holding cavity of holding filtrating between shell and the centrifugation bucket, and filtration is including being used for filtering the water and the filter membrane of enrichment microorganism and order about this filter membrane can dismantle the sealed installation mechanism that sets up on the centrifugation bucket.

According to above-mentioned scheme, can dismantle the setting with the filter membrane on the centrifugation bucket, the centrifugal force that utilizes the quick rotatory production of centrifugation bucket reaches the rapid filtration of water on the filter membrane to carry out the microorganism through the filter membrane and enrich, in case the filter membrane takes place to block up, quick replacement is realized to accessible seal installation mechanism, improves the enrichment efficiency of microorganism on the filter membrane when improving the filtration efficiency of water.

Furthermore, sealed installation mechanism includes that the convex filtration exit tube that has the built-in filter membrane that establishes on the outer rampart of centrifugal barrel, set up in the interior spacing filter membrane of filter tube and to the inside fender ring that removes of centrifugal barrel and with filter tube fixed coordination compress tightly the filter membrane on the fender ring and can supply the spacing lid that filtrating passes through.

According to the scheme, only the limiting cover needs to be taken down to replace the filter membrane, so that the replacement is very convenient.

Furthermore, a supporting filter disc for supporting the filter membrane is arranged between the limiting cover and the filter membrane.

According to the scheme, the arrangement of the supporting filter disc can avoid the phenomenon that the filter membrane deforms excessively under the impact of centrifugal force to lose the sealing property or break.

Furthermore, a thread tight-fitting structure is arranged between the limiting cover and the filtering pipe, and a protection mechanism for preventing the supporting filter disc and the filtering film from being subjected to rotary extrusion force is arranged between the limiting cover and the filtering film.

According to above-mentioned scheme, screw thread close-fitting structure orders about spacing lid and is the state of rotatory jacking, if it is direct with support the filter element contact, can lead to straining to support the filter element and have the rotary extrusion force, because support the stainless steel filter element that is about 0.5mm that the filter element adopted, extremely thin, can warp or even damage under the rotary extrusion force effect, in case support the filter element deformation and will lead to the filter membrane to warp, so, adopt protection mechanism very necessary.

Further, protection mechanism includes that one is located the roof that can supply filtrating to pass through between spacing lid and the support filter element, and the roof rotates to set up and covers and advance along with the rotatory top of spacing lid in spacing, and the roof supports the filter element along the axial motion of exhaling pipe and orders about and press the filter membrane on the retainer ring.

According to the above scheme, roof among the protection machanism rotates and sets up on spacing covering, after roof and support filter element butt, can eliminate rotatory extrusion force, only gives and supports filter element edge axial pressure to avoid supporting the impaired or deformation of filter element, thereby the protection filter membrane is indeformable.

Furthermore, a clamping and rotating fit mechanism is arranged between the top plate and the limiting cover, the clamping and rotating fit mechanism comprises a central hole formed in the limiting cover and a rotating boss which is convexly arranged on the top plate and is inserted into the central hole, and one end, far away from the top plate, of the rotating boss extends outwards to form a clamping and limiting ring which can be clamped into the central hole in an interference mode.

Furthermore, a plane bearing is arranged between the limiting cover and the top plate on the rotating boss.

According to the scheme, the circumferential torsion of the limiting cover can be eliminated by the arrangement of the plane bearing, and the top plate is driven to move only along the axial direction of the filter tube.

Furthermore, a matching clamping ring with the inner diameter gradually increasing is arranged on the limiting cover and extends towards the direction of the top plate by taking the central hole as the center, and the clamping limiting ring is in interference clamping fit with the central hole under the guiding action of the matching clamping ring.

According to above-mentioned scheme, the cooperation snap ring can provide joint spacing ring guiding force, avoids it at the joint in-process because the improper roll-off centre bore that leads to of application of force, so, can improve assembly efficiency.

Furthermore, a water passing groove for filtrate to pass through is arranged on the rotary lug boss.

Furthermore, the retaining ring is an elastic sealing retaining ring and is detachably arranged on the filter tube, a snap ring is convexly arranged on the inner ring wall of the filter tube, a ring groove for the filter membrane to be embedded is sunken at one end of the retaining ring close to the filter membrane, and an annular clamping groove for the snap ring to be clamped in an elastic interference mode is sunken at one end of the outer ring wall of the retaining ring far away from the filter membrane.

Compared with the prior art, the utility model has the following beneficial effects:

1. set up filtration on the rampart outside the centrifugal barrel, this filtration includes filter membrane and sealed installation mechanism, but through sealed installation mechanism quick replacement filter membrane, the filter membrane can supply water under the centrifugal force effect and fast pass through simultaneously with the microorganism enrichment.

2. Among the sealed installation mechanism, filtration exit tube and spacing lid screw-thread fit, the event is add protection mechanism and is used for avoiding supporting the filter element impaired under the effect of rotatory extrusion force to avoid the filter membrane to take place deformation, protection mechanism include with spacing lid normal running fit's roof, the roof supports filter membrane elastic seal and presses between supporting roof and fender ring, can realize sealed effect and can avoid the filter membrane to receive rotatory extrusion force again, thereby the protection filter membrane is not impaired.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a front view of a filter centrifuge with a filter membrane capable of being disassembled quickly according to the present embodiment;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is an enlarged view of A in FIG. 2;

fig. 4 is a partially exploded view of the centrifugal bucket of the present embodiment.

In the figure: 1. a housing; 2. a centrifuge bucket; 3. an accommodating cavity; 4. a rotating shaft; 5. a motor; 6. an external thread; 7. a filtration tube; 8. a snap ring; 9. a baffle ring; 10. an annular neck; 11. a ring groove; 12. supporting the filter disc; 13. a limiting cover; 14. a top plate; 15. rotating the boss; 16. clamping the limiting ring; 17. matching with a snap ring; 18. passing through a water tank; 19. an elastic sealing ring; 20. a flat bearing; 21. and (5) filtering the membrane.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Examples

A filtration formula centrifuge that filter membrane can be dismantled fast, refer to fig. 1-2 and show, including shell 1, rotate and set up centrifuge bucket 2 in shell 1 and set up the filtration on centrifuge bucket 2 outer rampart, filtration is provided with at least one around centrifuge bucket 2's circumference interval, centrifuge bucket 2's rotation is controlled by a motor 5, centrifuge bucket 2's lower extreme downwardly extending has a pivot 4, pivot 4 is connected the cooperation with the motor shaft electricity, motor 5 fixes on shell 1, when the motor shaft rotates, order about centrifuge bucket 2 synchronous rotation.

A containing cavity 3 for containing filtrate is formed between the shell 1 and the centrifugal barrel 2, as shown in fig. 2-4, the filtering structure comprises a filter membrane 21 and a sealing installation mechanism for driving the filter membrane 21 to be detachably and hermetically arranged on the centrifugal barrel 2, the filter membrane 21 is planar or arc-shaped, the filter membrane 21 of the scheme is in a disc shape and is uniformly distributed with 0.22-0.45 μm filtering micropores, the sealing installation mechanism comprises a filtering pipe 7 which is convexly arranged on the outer ring wall of the centrifugal barrel 2 and is internally provided with the filter membrane 21, a baffle ring 9 is detachably arranged in the filtering pipe 7, the baffle ring 9 is an elastic sealing baffle ring 9, a snap ring 8 is convexly arranged on the inner ring wall of the filtering pipe 7, one end of the baffle ring 9, which is close to the filter membrane 21, is sunken with a ring groove 11 for the filter membrane 21 to be embedded, and one end of the outer ring wall of the baffle ring 9, which is far away from the filter membrane 21, is sunken with an annular clamping groove 10 for the snap ring 8 to be elastically clamped in an interference fit manner, the filter tube 7 is provided with a limit cover 13 which presses the filter membrane 21 against the baffle ring 9 and through which the filtrate can pass.

In order to avoid the filter membrane from being excessively deformed under the action of centrifugal force to be worn or lose the sealing property, a supporting filter disc 12 for supporting the filter membrane 21 is arranged between the limiting cover 13 and the filter membrane 21, the supporting filter disc 12 is a stainless steel filter disc with the thickness of 0.5mm, and the filter membrane 21 is clamped between the supporting filter disc 12 and the baffle ring 9.

This embodiment of hesitation, spacing lid 13 with filter out and connect through screw thread tight fit structure between the pipe 7, screw thread tight fit structure includes in filtering out the external screw thread 6 that the outer rampart set up of pipe 7 and in the internal screw thread in external screw thread fit that sets up of the rampart in spacing lid 13. Because the rotary jacking force generated by the thread tight-fitting structure can damage the supporting filter disc 12, a protection mechanism for preventing the supporting filter disc 12 from being subjected to rotary extrusion force is arranged between the limiting cover 13 and the supporting filter disc 12, the protection mechanism is shown in figures 2-4 and comprises a top plate 14 which is positioned between the limiting cover 13 and the supporting filter disc 12 and can allow filtrate to pass through, the top plate 14 and the limiting cover 13 are in relative rotary fit through a clamping rotary fit mechanism, the clamping rotary fit mechanism comprises a central hole arranged on the limiting cover 13 and a rotary boss 15 which is convexly arranged on the top plate 14 and is inserted into the central hole, one end of the rotary boss 15, far away from the top plate 14, extends outwards to form a clamping limiting ring 16 which can be clamped into the central hole in an interference manner, in order to improve the assembly efficiency of the two, a matching clamping ring 17 with gradually increased inner diameter is extended towards the direction of the top plate 14 by taking the central hole as a center on the limiting cover 13, the clamping limiting ring 16 is in interference clamping fit with the central hole under the guiding action of the clamping ring 17, a plane bearing 20 is arranged between the top plate 14 and the limiting cover 13 on the rotating boss 15, after the top plate 14 is clamped with the limiting cover 13, the limiting cover 13 can smoothly rotate relative to the top plate 14, when the limiting cover 13 is rotated and jacked until the top plate 14 is contacted with the supporting filter disc 12, the top plate 14 only exerts axial pressure on the supporting filter disc 12 under the jacking of the limiting cover 13, so that the supporting filter disc 12 is prevented from being subjected to rotary extrusion force, the supporting filter disc 12 is ensured not to be deformed, and the filter membrane 21 is protected from being damaged.

The rotating boss 15 is provided with a plurality of water passing grooves 18 for passing through the filtrate, as shown in fig. 4, the water passing grooves 18 are uniformly arranged around the center circumference of the rotating boss 15 at intervals, and the filtrate is filtered by the filter membrane 21 and the support filter 12 and then is rapidly discharged into the accommodating cavity 3 through the water passing grooves 18.

To improve sealing, an elastomeric sealing ring 19 is provided between top plate 14 and support filter 12, as shown in fig. 3-4.

Utilize the filtration formula centrifuge of this embodiment, but according to the demand quick replacement filter membrane 21, when needing to be changed filter membrane 21, only need outwards screw out spacing lid 13 until breaking away from with filtering out pipe 7, just can take out support filter element 12 and filter membrane 21 and change, when needs installation filter membrane 21, earlier put into in the annular 11 of retaining ring 9 with filter membrane 21, put into the filtration exit tube with supporting filter element 12, then put into elastic seal ring 19, push into spacing lid 13 and the cooperation of filtering out pipe 7, until roof 14 top to supporting filter element 12 with filter membrane 21 butt on retaining ring, at this moment, filter membrane 21 seals between supporting filter element 16 and retaining ring 9, when needing to carry out holistic thorough washing, it can to take out retaining ring 9 and wash individual spare part one by one.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a filtration formula centrifuge that filter membrane quick detach, includes shell (1), rotates centrifuge bucket (2) that sets up in shell (1) and sets up the filtration on centrifuge bucket (2) outer rampart, and the rotation of centrifuge bucket (2) is controlled by a motor (5), is formed with holding cavity (3) of holding filtrating between shell (1) and centrifuge bucket (2), its characterized in that: the filtering structure comprises a filtering membrane (21) which is used for filtering water and is enriched with microorganisms and a sealing installation mechanism which drives the filtering membrane (21) to be detachably and hermetically arranged on the centrifugal barrel (2).

2. The filter centrifuge of claim 1, wherein: the sealing installation mechanism comprises a filtration tube (7) which is convexly arranged on the outer ring wall of the centrifugal barrel (2) and is internally provided with a filter membrane, a baffle ring (9) which is arranged in the filtration tube (7) and used for limiting the movement of the filter membrane (21) towards the inside of the centrifugal barrel (2), and a limiting cover (13) which is fixedly matched with the filtration tube (7) and used for pressing the filter membrane (21) on the baffle ring (9) and allowing the filtrate to pass through.

3. The filter centrifuge of claim 2, wherein: a supporting filter disc (12) for supporting the filter membrane (21) is arranged between the limit cover (13) and the filter membrane (21).

4. The filter centrifuge of claim 3, wherein: a thread tight-fitting structure is arranged between the limit cover (13) and the filtering pipe (7), and a protection mechanism for preventing the support filter disc (12) and the filter membrane (21) from being subjected to rotary extrusion force is arranged between the limit cover (13) and the support filter disc (12).

5. The filter centrifuge of claim 4, wherein: the protection mechanism comprises a top plate (14) which is positioned between the limiting cover (13) and the supporting filter disc (12) and can be used for filtrate to pass through, the top plate (14) is rotatably arranged on the limiting cover (13) and is jacked along with the rotation of the limiting cover (13), and the top plate (14) moves along the axial direction of the filter tube (7) and drives the supporting filter disc (12) to press the filter membrane (21) on the baffle ring (9).

6. The filter centrifuge of claim 4, wherein: be provided with joint normal running fit mechanism between roof and spacing lid (13), joint normal running fit mechanism includes the centre bore that sets up on spacing lid (13) and in roof (14) go up protruding rotation boss (15) of establishing and centre bore interlude, rotate boss (15) and keep away from the one end of roof and outwards extend and have joint spacing ring (16) that can interference card income centre bore.

7. The filter centrifuge of claim 6, wherein: a plane bearing (20) is arranged between the limiting cover (13) and the top plate (14) on the rotating boss (15).

8. The filter centrifuge of claim 5, wherein: a matching snap ring (17) with the gradually increasing inner diameter extends towards the top plate (14) on the limiting cover (13) by taking the central hole as the center, and the clamping limiting ring (16) is in interference clamping fit with the central hole under the guiding action of the matching snap ring (17).

9. The filter centrifuge of claim 5, wherein: a water passing groove (18) through which filtrate can pass is arranged on the rotary lug boss (15).

10. The filter centrifuge of claim 2, wherein: the retaining ring (9) is an elastic sealing retaining ring (9) and is detachably arranged on the filter tube (7), a snap ring (8) is convexly arranged on the inner annular wall of the filter tube (7), a ring groove (11) which can be embedded by the filter membrane (21) is sunken in one end, close to the filter membrane (21), of the retaining ring (9), and an annular clamping groove (10) which can be clamped by the snap ring (8) in an elastic interference manner is sunken in one end, far away from the filter membrane (21), of the outer annular wall of the retaining ring (9).