CN221479918U - Quick detection sample processing device of microorganism - Google Patents

Abstract

The utility model discloses a rapid detection sample processing device for microorganisms, which comprises a separation column and a vacuum sample tube, wherein a filter screen and a filter element are sequentially arranged in the separation column from top to bottom, so that the separation column is divided into a primary filter chamber, a secondary filter chamber and a seepage chamber; an injection port with a sealing cover is arranged at the top of the primary filter chamber, and an injection needle is arranged at the bottom of the seepage chamber; the bottom of the separation column extends out of the sealing section, and the top of the vacuum sample tube is connected with the sealing section through a breakable or separable sealing structure. The utility model can rapidly process solid food samples, thereby accelerating the sampling efficiency during microorganism detection, reducing the contact time with the outside and avoiding the infection from affecting the samples.

Description

Quick detection sample processing device of microorganism

Technical Field

The utility model relates to the field of detection sample processing, in particular to a rapid detection sample processing device for microorganisms.

Background

Food safety is greater than daily, and is a very important routine item for the detection of microorganisms in food due to concerns about the most basic life interests of humans. Generally, the solid food is relatively complicated to sample, and after on-site sampling, on-site treatment is required, and a common treatment method is to add purified water (sterile water, non-drinking purified water), mashe, filter, take filtrate, suck the filtrate into a sample tube by a suction tube, seal the sample tube, and send the sample tube to a detection mechanism by a refrigerating mode to detect whether the sample tube contains microorganisms or germs harmful to human bodies. The sampling mode has the advantages that the procedures are more, the contact time between the sample and the outside is more, and the sample is easy to be infected, so that the subsequent detection result is influenced, the sampling efficiency is low, and the sampling progress is greatly influenced.

Disclosure of utility model

The utility model aims to solve the technical problem of providing a rapid microorganism detection sample processing device which can rapidly process solid food samples, shorten working procedures, increase efficiency, reduce the contact time of the samples with the outside and avoid sample infection.

In order to solve the technical problems, the technical scheme of the utility model is as follows:

The utility model provides a microorganism short-term test sample processing apparatus, includes separation post and vacuum sample pipe, filter screen and filter core have been set gradually from top to bottom in the separation post to separate into primary filter chamber, secondary filter chamber and seepage flow room in the separation post; an injection port with a sealing cover is arranged at the top of the primary filter chamber, and an injection needle is arranged at the bottom of the seepage chamber; the bottom of the separation column extends out of the sealing section, and the top of the vacuum sample tube is connected with the sealing section through a breakable or separable sealing structure.

Further, an inwards concave annular table A is arranged at the inner side of the bottom end of the sealing section, an inner thread is arranged at the inner side of the annular table A, an outwards convex annular table B is arranged at the periphery of the top end of the vacuum sample tube, and an outer thread matched with the inner thread is arranged at the periphery of the annular table B; the annular table A and the annular table B are sealed and connected in a threaded screwing mode.

Further, a plurality of fingerplates are uniformly arranged on the peripheral wall of the vacuum sample tube.

Further, the top end of the vacuum sample tube is provided with a puncture, and the puncture is sealed by a latex plug.

Further, the diameters of the primary filter chamber, the secondary filter chamber and the seepage chamber are sequentially reduced, the filter screen and the filter element are sequentially arranged at the step formed by the junction, the top of the primary filter chamber is a detachable cover body, and the injection port is arranged on the cover body.

The utility model has the advantages that:

The solid food sample can be rapidly processed, so that the sampling efficiency in microorganism detection is accelerated, the solid food sample can be rapidly processed under the negative pressure effect of the vacuum sample tube, the contact time with the outside is reduced, and the sample is prevented from being affected by infection.

Secondly, the top and the sealing section of the vacuum sample tube are connected through a breakable or separable sealing structure, so that sterility is guaranteed on one hand, the injection needle and the top end of the vacuum sample tube are prevented from contacting the outside when not in use, and the vacuum sample tube can be pushed when in use, so that the injection needle is penetrated to perform rapid suction sampling.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

Fig. 2 is a cross-sectional view of the present utility model.

In the figure, 1-separation column, 11-primary filter chamber, 12-secondary filter chamber, 13-seepage chamber, 131-injection needle, 14-sealing section, 141-annular table A, 15-cover body, 16-injection port, 17-sealing cover, 2-vacuum sample tube, 21-puncture port, 22-emulsion plug, 23-annular table B, 24-fingerboard, 3-filter screen and 4-filter core.

Detailed Description

The following describes the embodiments of the present utility model further with reference to the drawings. The description of these embodiments is provided to assist understanding of the present utility model, but is not intended to limit the present utility model. In addition, the technical features of the embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

As shown in fig. 1-2:

The utility model provides a quick detection sample processing apparatus of microorganism, includes separation column 1 and vacuum sample pipe 2, filter screen 3 and filter core 4 have been set gradually from top to bottom in the separation column 1 to separate into primary filter chamber 11, secondary filter chamber 12 and seepage flow chamber 13 in the separation column 1; an injection port 16 with a sealing cover 17 is arranged at the top of the primary filter chamber 11, and an injection needle 131 is arranged at the bottom of the seepage chamber 13; the bottom of the separation column 1 extends out of the sealing section 14, and the top of the vacuum sample tube 2 is connected with the sealing section 14 through a breakable or separable sealing structure.

Working principle: the solid food sample is smashed and then mixed and diluted by purified water, then the solid food sample is sucked by a syringe (without a needle) and is injected into the primary filter chamber 11 from the injection port 16, the filter screen 3 is used for rapidly filtering larger residues, the single-layer non-woven fabric is adopted, the filtrate after the primary filtration enters the secondary filter chamber 12, the filter core 4 is used for filtering the finer residues, and the filtration can be performed by adopting a PP fiber filter core and the like. (it should be noted that the filter element used cannot be a very small-void filter element, and the diameter of the filter element is 2-3 times larger than the volume of microorganisms, for example, an ultrafiltration filter element and an activated carbon filter element cannot be used, and a common fiber filter element is used).

When the samples in the primary filtering chamber 11 enter the secondary filtering chamber 12 and the seepage chamber 13 has certain filtrate, the sealing connection between the separation column 1 and the vacuum sample tube 2 is released, then the separation column is pushed into the vacuum sample tube 2, the injection needle 131 pierces the vacuum sample tube 2, the filtrate in the seepage chamber 13 rapidly enters the vacuum sample tube 2 under the action of vacuum, negative pressure is formed at the lower side of the secondary filtering chamber 12, the filtration of the secondary filtering chamber 12 is promoted, the filtrate in the seepage chamber 13 can be rapidly supplemented by the descending of the filtrate, and therefore, the air can not be sucked into the vacuum sample tube 2.

The top of vacuum sample tube 2 is connected with seal section 14 through breakable or separable seal structure, guarantees sterility on the one hand, avoids syringe needle 131 and vacuum sample tube 2 top to contact with the external world when not using, can promote vacuum sample tube 2 again when secondly using to make syringe needle 131 puncture. The inner side of the bottom end of the sealing section 14 can be provided with an inwards concave annular table A141, the inner side of the annular table A141 is provided with an internal thread, the outer periphery of the top end of the vacuum sample tube 2 is provided with an outwards convex annular table B23, and the outer periphery of the annular table B23 is provided with an external thread matched with the internal thread; the annular table A141 and the annular table B23 are sealed and connected in a threaded screwing mode.

When the vacuum sample tube 2 needs to be pushed, the vacuum sample tube 2 is continuously rotated, so that the annular table A141 and the annular table B23 are misplaced, sealing and connection are released, the sucking operation of the sample can be performed, and a plurality of finger plates 24 can be uniformly arranged on the peripheral wall of the vacuum sample tube 2 for convenient rotation.

The vacuum sample tube 2 is separated for storage after sample collection, so that the puncture opening 21 can be formed in the top end of the vacuum sample tube 2, the puncture opening 21 is sealed through the latex plug 22, and the sealed state can be restored after puncture.

Because still need install fixed filter screen 3 and filter core 4 in the separator 1, the diameter of just effect filter chamber 11, secondary filter chamber 12 and seepage flow room 13 reduces in proper order, and filter screen 3 and filter core 4 are installed in proper order and are being crossed the step department that forms, just effect filter chamber 11 top is detachable lid 15, and injection port 16 sets up on lid 15, can install filter screen 3 and filter core 4 earlier like this and close lid 15 again (preferably adopts hot melt connection).

The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings, but the present utility model is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the utility model, and yet fall within the scope of the utility model.

Claims (5)

1. A rapid microbial detection sample processing device, characterized in that: the device comprises a separation column and a vacuum sample tube, wherein a filter screen and a filter element are sequentially arranged in the separation column from top to bottom, so that the separation column is divided into a primary filter chamber, a secondary filter chamber and a seepage chamber; an injection port with a sealing cover is arranged at the top of the primary filter chamber, and an injection needle is arranged at the bottom of the seepage chamber; the bottom of the separation column extends out of the sealing section, and the top of the vacuum sample tube is connected with the sealing section through a breakable or separable sealing structure.

2. The rapid microbial detection sample processing device of claim 1, wherein: an inwards concave annular table A is arranged at the inner side of the bottom end of the sealing section, an internal thread is formed at the inner side of the annular table A, an outwards convex annular table B is arranged at the periphery of the top end of the vacuum sample tube, and an external thread matched with the internal thread is formed at the periphery of the annular table B; the annular table A and the annular table B are sealed and connected in a threaded screwing mode.

3. The rapid microbial detection sample processing device of claim 2, wherein: a plurality of fingerboards are uniformly arranged on the peripheral wall of the vacuum sample tube.

4. The rapid microbial detection sample processing device of claim 1, wherein: the top end of the vacuum sample tube is provided with a puncture, and the puncture is sealed by a latex plug.

5. The rapid microbial detection sample processing device of claim 1, wherein: the diameters of the primary filter chamber, the secondary filter chamber and the seepage chamber are sequentially reduced, the filter screen and the filter element are sequentially arranged at the step formed by the junction, the top of the primary filter chamber is a detachable cover body, and the injection port is arranged on the cover body.