CN209778850U

CN209778850U - Bacteria filter box

Info

Publication number: CN209778850U
Application number: CN201920012120.1U
Authority: CN
Inventors: 陆军; 陆维炜; 赵丽杰; 倪琳
Original assignee: Adoption Of Polytron Technologies Inc
Current assignee: Adoption Of Polytron Technologies Inc
Priority date: 2019-01-04
Filing date: 2019-01-04
Publication date: 2019-12-13
Anticipated expiration: 2029-01-04

Abstract

The utility model discloses a bacteria filter box, which comprises a base, a filter membrane, a middle frame and an upper cover which are arranged from bottom to top in sequence, wherein the filter membrane is fixed on the base, and the bottom of the base is provided with a through hole for vacuum pumping to intercept bacteria; a cover is arranged at the through hole below the base; the base size is greater than the size of center lower extreme, and its inside wall that is located the filter membrane top of base sets up the center and places the groove, fixes on its upper portion lateral wall of center to set up a plurality of couple, hangs on the couple and establishes the funnel, and the fixed ring that sets up and couple adaptation on the funnel surface, the funnel size on the different couples is different, fixes on every funnel and sets up the identification layer. The utility model discloses a base can be fit for the use of a plurality of not unidimensional center, reduces the outfit quantity of base, saves the cost, improves the utility model discloses a commonality to can avoid liquid to spill over from the base when adding the liquid that awaits measuring.

Description

Bacteria filter box

Technical Field

The utility model relates to a bacterial filter box.

Background

At present, devices for detecting microorganisms or bacteria such as various medicines, foods, health-care products (mainly liquid) and the like in the market are membrane filters or multi-filter filters, which are mostly made of stainless steel, and the specific test method comprises the following steps: firstly, the filter membrane is arranged in a funnel (a generally cylindrical stainless steel funnel) on a stainless steel bracket; then vacuumizing is carried out, and bacteria are intercepted on a filter membrane; then taking down the filter membrane from the stainless steel funnel and putting the filter membrane on a culture dish; finally, the culture dish is put into an incubator for culture (culture of aerobes, anaerobes and fungi is carried out according to the detection purpose), and then the result is seen. The detection method is too complicated and too low in efficiency, the filtering membrane needs to be manually taken down and placed in a culture dish, bacteria of the filtering membrane are easily lost in the operation process, or other places are infected on the filtering membrane, and the accuracy is poor; in addition, the safety is low, and bacteria on the membrane are easy to infect operators in the process of manually collecting the filtering membrane. In addition, the middle frames with different sizes are required to be provided with bases with different sizes, the universality is poor, and the situation that liquid overflows the bases can occur if the amount of liquid is too much during vacuumizing.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the defect that exists among the prior art, provide a bacterial filter box, can be fit for the use of a plurality of not unidimensional middlings, reduce the outfit quantity of base, save the cost, improve the utility model discloses a commonality to can avoid liquid to spill over from the base when adding the liquid that awaits measuring.

In order to achieve the purpose, the technical scheme of the utility model is to design a bacteria filter box, which comprises a base, a filter membrane, a middle frame and an upper cover which are arranged from bottom to top in sequence, wherein the filter membrane is fixed on the base, and the bottom of the base is provided with a through hole for vacuumizing and intercepting bacteria; a cover is arranged at the through hole below the base; the base size is greater than the size of center lower extreme, and its inside wall that is located the filter membrane top of base sets up the center and places the groove, fixes on its upper portion lateral wall of center to set up a plurality of couple, hangs on the couple and establishes the funnel, and the fixed ring that sets up and couple adaptation on the funnel surface, the funnel size on the different couples is different, fixes on every funnel and sets up the identification layer. The funnel is arranged outside the middle frame, the funnel can be used when liquid is poured in, and the vacuumizing machine is started immediately after the liquid is poured in, so that the phenomenon that the liquid overflows from the base due to too large liquid flow can be avoided. The numbers in the marking layer are matched with the power of a vacuum machine, so that when liquid is poured into the middle frame, the liquid can be prevented from overflowing from the base when the liquid is poured into the middle frame by selecting a proper funnel.

The further technical proposal is that the middle frame placing groove is in a conical shape or a step shape. If the middle frame placing groove is conical, the conicity is between 30 and 60 degrees, and the size of the large end of the middle frame placing groove is larger than that of the lower end of the middle frame, so that the middle frames with different sizes can be clamped after being placed in the middle frame placing groove, and the placing heights are slightly different.

The further technical proposal is that a layer of cotton paper is arranged below the filter membrane; the filter membrane is welded on the base, and the base and the middle frame are made of ground glass materials; the upper cover is made of ground glass; the base is in a downward conical cylinder shape, and the through hole is positioned in the center of the base. The upper cover is used for preventing dust, is fixed in the filter membrane on the base, need not to take out the filter membrane again, and the base acts as the culture dish promptly, has saved the manual work and has got the membrane and put the process in the culture dish with the membrane, has greatly saved the manual work, has improved efficiency for the testing process is changed manyly into simplely. The arrangement ensures that the tissue paper absorbs moisture in the liquid after the liquid to be detected passes through the tissue paper, so that the tissue paper serves as a moisture medium growth bed in the subsequent bacteria culture process, and the detection process (mainly referred to as the subsequent bacteria culture process) is further simplified and less manual operation is performed. The size of the middle frame is matched with that of the base, and the middle frame is made of ground glass, so that liquid does not need to be worried about overflowing from the base when liquid to be detected is added. The upper cover is made of ground glass. The arrangement ensures that the upper cover and the base are more fit, and further ensures the sealing environment in the culture dish required in the subsequent culture process. The cover is arranged to tightly prevent dust or bacteria from entering the cover when not in use, and the cover is taken away when in use.

A further technical scheme is that a limiting groove matched with the shape of the lower end of the funnel is formed in the inner side wall of the upper end of the middle frame. Therefore, the funnel is convenient to place, and the process of pouring liquid is stable and reliable.

The utility model has the advantages and the beneficial effects that: a base can be fit for the use of a plurality of not unidimensional center, reduces the outfit quantity of base, saves the cost, improves the utility model discloses a commonality to can avoid liquid to spill over from the base when adding the liquid that awaits measuring. The funnel is arranged outside the middle frame, the funnel can be used when liquid is poured in, and the vacuumizing machine is started immediately after the liquid is poured in, so that the phenomenon that the liquid overflows from the base due to too large liquid flow can be avoided. The numbers in the marking layer are matched with the power of a vacuum machine, so that when liquid is poured into the middle frame, the liquid can be prevented from overflowing from the base when the liquid is poured into the middle frame by selecting a proper funnel. If the middle frame placing groove is conical, the conicity is between 30 and 60 degrees, and the size of the large end of the middle frame placing groove is larger than that of the lower end of the middle frame, so that the middle frames with different sizes can be clamped after being placed in the middle frame placing groove, and the placing heights are slightly different. The upper cover is used for preventing dust, is fixed in the filter membrane on the base, need not to take out the filter membrane again, and the base acts as the culture dish promptly, has saved the manual work and has got the membrane and put the process in the culture dish with the membrane, has greatly saved the manual work, has improved efficiency for the testing process is changed manyly into simplely. The arrangement ensures that the tissue paper absorbs moisture in the liquid after the liquid to be detected passes through the tissue paper, so that the tissue paper serves as a moisture medium growth bed in the subsequent bacteria culture process, and the detection process (mainly referred to as the subsequent bacteria culture process) is further simplified and less manual operation is performed. The size of the middle frame is matched with that of the base, and the middle frame is made of ground glass, so that liquid does not need to be worried about overflowing from the base when liquid to be detected is added. The upper cover is made of ground glass. The arrangement ensures that the upper cover and the base are more fit, and further ensures the sealing environment in the culture dish required in the subsequent culture process. The cover is arranged to tightly prevent dust or bacteria from entering the cover when not in use, and the cover is taken away when in use. The detection process is simplified, the efficiency is greatly improved, and the working efficiency can be improved by more than ten times; the accuracy is higher, and the condition that bacteria on the filtering membrane are lost or other bacteria are infected to the filtering membrane does not exist; the safety is higher, does not need the artifical filter membrane of contact, does not have the bacterium on the filter membrane to infect the condition on operating personnel's hand.

Drawings

Fig. 1 is a schematic view of a bacterial filter cassette of the present invention.

In the figure: 1. a base; 2. filtering the membrane; 3. a middle frame; 4. an upper cover; 5. a through hole; 6. cotton paper; 7. a cover; 8. a middle frame placing groove; 9. hooking; 10. a funnel; 11. a circular ring; 12. an identification layer; 13. a limiting groove.

Detailed Description

The following description will further describe embodiments of the present invention with reference to the accompanying drawings and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

As shown in fig. 1, the utility model relates to a bacteria filter box, which comprises a base 1, a filter membrane 2, a middle frame 3 and an upper cover 4 which are arranged from bottom to top in sequence, wherein the filter membrane 2 is fixed on the base 1, and the bottom of the base 1 is provided with a through hole 5 for vacuumizing and intercepting bacteria; a cover 7 is arranged at the through hole 5 below the base 1; the size of base 1 is greater than the size of 3 lower extremes of center, and base 1 sets up the center on its inside wall that is located filter membrane 2 top and places groove 8, and fixed a plurality of couple 9 that sets up on 3 upper portion lateral walls of center, hang on the couple 9 and establish funnel 10, funnel 10 outer fixed set up with the ring 11 of couple 9 adaptation on the surface, and funnel 10 size on the different couple 9 is different, and the fixed sign layer 12 that sets up on every funnel 10. The middle frame placing groove 8 is conical. A layer of cotton paper 6 is arranged below the filter membrane 2; the filter membrane 2 is welded on the base 1, and the base 1 and the middle frame 3 are made of ground glass materials; the upper cover 4 is made of ground glass; the base 1 is in a downward conical cylinder shape, and the through hole 5 is positioned in the central part of the base 1. The inner side wall of the upper end of the middle frame 3 is provided with a limit groove 13 matched with the shape of the lower end of the funnel 10.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A bacteria filter box is characterized by comprising a base, a filter membrane, a middle frame and an upper cover which are sequentially arranged from bottom to top, wherein the filter membrane is fixed on the base, and the bottom of the base is provided with a through hole for vacuumizing and intercepting bacteria; a cover is arranged at the through hole below the base; the base size is greater than the size of center lower extreme, and its inside wall that is located the filter membrane top of base sets up the center and places the groove, fixes on its upper portion lateral wall of center to set up a plurality of couple, hangs on the couple and establishes the funnel, and the fixed ring that sets up and couple adaptation on the funnel surface, the funnel size on the different couples is different, fixes on every funnel and sets up the identification layer.

2. A bacterial filter cassette as claimed in claim 1, wherein said intermediate frame receiving slot is tapered or stepped.

3. A bacterial filtration cassette according to claim 2, wherein a layer of tissue paper is provided beneath said filter membrane; the filter membrane is welded on the base, and the base and the middle frame are made of ground glass materials; the upper cover is made of ground glass; the base is in a downward conical cylinder shape, and the through hole is positioned in the center of the base.

4. A bacterial filter cassette according to claim 3, wherein the inner side wall of the upper end of the middle frame is provided with a limiting groove adapted to the shape of the lower end of the funnel.