CN212215147U - Filter membrane elution ware - Google Patents

Abstract

The utility model discloses a filter membrane elution ware, its technical scheme is including filter membrane, the vibration subassembly that has the microorganism particle, press down subassembly, compression chamber and sample outflow module, press down the subassembly and be used for the extrusion filter membrane, the vibration subassembly configuration is taken the vibration of movable filter membrane. When the filter membrane is soaked with the eluent, the vibration assembly drives the filter membrane to vibrate, the microbial particles on the filter membrane enter the eluent, then the eluent is exuded by pressing the filter membrane through the pressing assembly, and the exuded eluent flows into the sample outflow module to enter the subsequent analysis and research. The utility model discloses a vibration and the pneumatic extruded mode of machinery can reach and can elute the filter membrane by the efficient, and the time is short, and no fibrous impurity does not basically influence the active effect of microorganism.

Description

Filter membrane elution ware

Technical Field

The utility model relates to a microorganism aerosol sampling and elution belongs to biochemical experiment technical field, specificly relates to a filter membrane elution ware.

Background

The microbial aerosol is a colloid system formed by suspending a population of tiny, simple-structured single cells or nearly single-cell organisms in air, and the particle size is 0.01-100 microns, generally 0.30 microns. The microbial aerosol has six characteristics of heterogeneity of sources, diversity of types, changeability of activity, three micro types of dissemination, reproducibility of deposition and universality of infection. The activity of the microbial aerosol is always in a changing state from the moment when the microbial aerosol is formed, and the research and the monitoring of the concentration, the type, the distribution and the changing rule of the microbial aerosol in the air have important significance. The research on the microbial aerosol firstly needs to sample the microbial aerosol to carry out subsequent analysis and research.

The sampling of the microbial aerosol includes AGI (liquid impact sampler) and six-grade anderson sampler, and further includes a microbial aerosol sampler (patent application No. 202010326565.4) which is independently developed by beijing huilong and technologies ltd and adopts a filter membrane to carry out a particle trapping principle. However, for the sampler which adopts a filter membrane to collect particles at present, how to efficiently elute the sample in the filter membrane to be sampled is a difficult problem, and especially for the filter membrane which adopts the electrostatic collection effect, the interception effect of the filter membrane fibers and the adsorption effect of static electricity need to be overcome in the elution process. The traditional elution method is that a filter membrane is firstly sheared and then immersed into deionized water, and the elution of the filter membrane is realized by using a method of ultrasonic oscillation and then filtration. The disadvantages of this method are: firstly, some particles are combined with the filter membrane tightly, and cannot be completely eluted by ultrasonic oscillation; in addition, certain filter membrane fiber impurities can be generated in the operation process, so that the final analysis is influenced; especially for the filter membrane for collecting the microorganism, the activity of the microorganism can be lost by the ultrasonic oscillation method, and the traditional method is complicated in operation and takes a long time.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a filter membrane elution ware can elute the filter membrane by the efficient, and the time is short to no fibrous impurity does not influence the activity of microorganism basically.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a filter membrane eluter comprising an eluter body, the eluter body comprising:

the filter assembly comprises a filter membrane bracket and a filter membrane formed by a filter membrane which is used for trapping microorganism particles by static electricity, wherein the filter membrane is fixedly arranged on the filter membrane bracket or integrally formed with the filter membrane bracket;

the vibration assembly comprises a piston rod and is configured to drive the filter membrane to vibrate; before the filter membrane vibrates, eluent can be injected into the filter membrane, and biological particles on the filter membrane enter the eluent when the filter membrane vibrates;

the pressing assembly comprises a pressing plate and a pressing rod which are integrally formed or fixedly connected, a pressing handle is arranged on one side of the pressing rod, which is back to the pressing plate, and the pressing plate is used for pressing the filter membrane to allow eluent on the filter membrane to seep out;

the compression chamber, the pressing plate and the filtering component are arranged in the compression chamber, and the compression chamber is provided with a vent hole communicated with the outside;

the sample outflow module comprises a sample outflow channel with one end opening arranged below the filter membrane, the other end opening of the sample outflow channel is connected with a sample bottle, and the sample bottle is configured to receive the eluent seeped out from the filter membrane.

By adopting the technical scheme, the eluent can be injected into the filter membrane with the microbial particles, then the vibration component is controlled to vibrate to drive the filter membrane to vibrate, the microbial particles on the filter membrane enter the eluent, then the filter membrane is extruded by the pressing plate in the pressing component to enable the eluent on the filter membrane to seep out and flow into the sample outflow module, and the sample bottle collects the effluent eluent to perform subsequent research and analysis; the design of the vent hole ensures that the pressure plate can smoothly press and extrude the filter membrane downwards; the whole operation process adopts vibration and mechanical pneumatic extrusion modes, so that the filter membrane can be efficiently eluted, the required time period is short, no fiber impurities exist, and the activity of microorganisms is basically not influenced.

Further, the elution device main body comprises an elution device cover and an elution device base, and the elution device cover and the elution device base are detachably and fixedly connected;

the filtering component, the pressing component and the compression chamber are all arranged on the elution device cover;

the vibration assembly and the sample outflow module are disposed on the elution station.

Through adopting above-mentioned technical scheme, make things convenient for the installation of each subassembly or part to dismantle on the one hand, on the other hand is convenient for change or annotate and add eluant etc. to the filter membrane on the filter assembly, perhaps is convenient for change or handle etc. to whole filter assembly.

Further, the elution device is covered and is provided with the joint portion that is used for connecting filtering component, and the filter membrane bracket joint is provided with the elastic sealing circle in the joint portion on the joint portion, and between filter membrane bracket and the joint portion.

By adopting the technical scheme, the elastic sealing ring is arranged at the clamping part, the filter membrane bracket can be directly clamped and connected with the outer side of the elastic sealing ring under the action of external force, the elastic sealing ring is extruded, and the filter membrane bracket is clamped and fixed through the elasticity of the elastic sealing ring and the friction force between the elastic sealing ring and the filter membrane bracket; when the filter membrane bracket needs to be taken down, the filter membrane bracket is directly manually operated, and the filter membrane bracket is taken out when the external force is greater than the interaction force between the elastic sealing ring and the filter membrane bracket. Simple structure, convenient operation, the filter component's of being convenient for installation and dismantlement conveniently change different filter component.

Further, the elution device main body also comprises a sample groove used for containing eluent, and the sample groove is communicated with the compression chamber through a sample inflow channel.

Through adopting above-mentioned technical scheme, can directly pour the eluant into the sample cell, annotate to the filter membrane through sample inflow channel, need not additionally to dismantle filter membrane or filtration module and operate.

Furthermore, a control circuit module electrically connected with the vibration assembly is arranged in the elution seat and used for controlling the vibration and stop of the vibration assembly.

Through adopting above-mentioned technical scheme, compare with manual vibration mode, adopt control circuit module to carry out electric vibration, the vibration is stable and the frequency is fast for the microorganism particle on the filter membrane can be abundant enter into the eluant, effectual.

Further, the pressing assembly further comprises a spring, the spring is sleeved on the pressing rod and fixedly connected with the pressing handle, and the other end of the spring is fixedly connected with the cover of the elution device.

Through adopting above-mentioned technical scheme, down press down the handle gradually to the clamp plate extrusion filter membrane after, do not need manual pulling to press down the handle and remove the filter membrane with the clamp plate filter membrane dorsad, the spring is compressed this moment, releases the hand after, presses the handle and directly resets to the initial position when the clamp plate does not extrude the filter membrane under spring elastic action, uses manpower sparingly, degree of automation is high.

Further, the filter assembly is arranged at the bottommost part of the elution device cover and is abutted with the elution device seat;

the elution device is characterized in that a guide plate is arranged at one end, facing the elution device cover, of the elution device seat, the guide plate is connected with the piston rod, a sample port communicated with an opening at one end of the sample outflow channel is formed in the guide plate, and elution liquid on the filter membrane falls on the guide plate and flows into the sample outflow channel through the sample port.

Through adopting above-mentioned technical scheme, the guide plate plays the supporting role to the filter membrane when the filter membrane is extruded on the one hand, and on the other hand carries out the water conservancy diversion to the eluant of oozing on by the filter membrane for the eluant is all by sample mouth department inflow sample outflow passageway, and the eluant large tracts of land on the filter membrane is to the whereabouts can not appear, makes partial eluant can not get into sample outflow passageway and causes the waste of eluant and influence phenomenons such as analysis of follow-up result.

Furthermore, the guide plate is provided with a plurality of sample circulation grooves communicated with the sample ports, and the sample circulation grooves are all arranged on the guide plate by taking the sample ports as circle centers;

the bottom of the sample circulation groove is designed to be inclined, and the depth of the sample circulation groove is deeper and deeper along with the approach of the sample opening.

Further, the guide plate is in a conical design with an upward opening, and the sample port is arranged at the conical bottom of the guide plate.

Through adopting above-mentioned technical scheme, the sample circulation groove of the design of the bottom inclined plane of guide plate or directly design the conical structure with the guide plate, can make the eluent that drips on the guide plate flow smoothly to sample mouth department and flow into sample outflow passageway in, avoid the eluent to gather the condition emergence that does not flow because of the horizontal reason on the guide plate.

Furthermore, the elution device seat is provided with a sample bottle fixing position which is made of plastic materials, and the sample bottle is directly clamped at the sample fixing position.

Through adopting above-mentioned technical scheme, the sample bottle can direct joint receive by the eluant that oozes on the filter membrane in sample fixed position department, moves together with the sample bottle when removing whole product, need not additionally to move the sample bottle. The sample bottle is clamped and fixed, so that the sample bottle does not fall down due to unevenness of the ground or an operation platform, and the sample bottle does not need to be held by hands.

To sum up, the filter membrane elution device of the utility model has the following beneficial effects:

(1) the filter membrane can be efficiently eluted by adopting a vibration and mechanical pneumatic extrusion mode, the time is short, the elution efficiency is high, and the elution liquid has no fibrous impurities and basically does not influence the activity of microorganisms;

(2) the filter membrane is convenient to disassemble and assemble;

(3) can be operated by a single key, has small volume, light weight and convenient carrying.

Drawings

FIG. 1 is a schematic diagram of the whole of a filter membrane elution apparatus in the embodiment;

FIG. 2 is a sectional view of the filter membrane eluter in the example;

FIG. 3 is a view showing an eluent cap structure of the filter elution apparatus in the embodiment;

FIG. 4 is a view showing the structure of an elution unit holder of the filter elution unit in the embodiment;

FIG. 5 is a plan view of one embodiment of a baffle in the membrane elutriator of the examples;

FIG. 6 is a schematic diagram of another embodiment of a baffle in the membrane elutriator in the examples.

In the figure:

100. an eluter body;

1. an eluent cover; 1a, a compression chamber; 1b, a vent hole; 1c, connecting blocks;

2. an elution device seat; 2a, fixing the sample bottle; 2b, a clamping groove;

3. a filter assembly; 3a, a filter membrane bracket; 3b, a filter membrane;

4. a pressing assembly; 4a, pressing a handle; 4b, a spring; 4c, pressing the lever; 4d, pressing a plate;

5. a vibrating assembly; 5a, a motor; 5b, a piston rod; 5c, connecting pieces;

6. a sample inflow module; 6a, a sample groove; 6b, a sample groove cover; 6c, a sample inflow channel;

7. a sample outflow module; 7a, a sample outflow channel; 7b, a sample outlet;

8. an elastic sealing ring;

9. a baffle; 9a, a sample port; 9b, a sample flow groove;

10. a battery;

11. a charging interface;

12. and (4) a sample bottle cap groove.

Detailed Description

The present invention will be described in further detail with reference to fig. 1 to 6.

As shown in fig. 1 and 2, the filter membrane elution device in the embodiment includes an elution device main body 100, the elution device main body 100 includes an elution device cover 1 and an elution device seat 2, and further includes a filter assembly 3, a pressing assembly 4, a vibrating assembly 5, a sample outflow module 7 and a compression chamber 1a, wherein the filter assembly 3, the pressing assembly 4 and the compression chamber 1a are all disposed or installed on the elution device cover 1, and the vibrating assembly 5 and the sample outflow module 7 are all disposed or installed on the elution device seat 2.

The filter component 3 comprises a filter membrane bracket 3a and a filter membrane 3b, the filter membrane bracket 3a is annularly arranged and can be detachably mounted on the elution device cover 1, and the filter membrane 3b and the filter membrane bracket 3a can be detachably and fixedly connected or the filter membrane 3b and the filter membrane bracket 3a are integrally formed. The filter membrane 3b is a filter membrane subjected to microorganism aerosol sampling in an electrostatic trapping manner, and microorganism particles after sampling are arranged on the filter membrane 3 b. The filter assembly 3 is located within a compression chamber 1a in the eluent cap 1.

The pressing component 4 comprises a pressing handle 4a, a pressing rod 4c and a pressing plate 4d, wherein the pressing handle 4a and the pressing plate 4d are fixedly connected to the upper end and the lower end of the pressing rod 4c respectively. The pressing plate 4d is located in the compression chamber 1a in the elute cover 1; one part of the pressing rod 4c extends into the elution device cover 1 and extends into the compression chamber 1a, and the other part of the pressing rod extends out of the elution device cover 1, namely, the pressing handle 4a is positioned outside the elution device cover 1. The specific embodiment is that a through hole for the up-and-down movement of the pressing rod 4c is arranged on the elution device cover 1, the pressing handle 4a is pulled up and down, and the pressing rod 4c can drive the pressing plate 4d to move up and down in the compression chamber 1 a. The pressure plate 4d is preferably designed from a flexible material. In order to ensure that the pressing plate 4d can be smoothly pressed down or pulled up, a vent hole 1b is formed in the elution device cover 1, and the compression chamber 1a is communicated with the outside atmosphere through the vent hole 1 b.

The vibration component 5 comprises a piston rod 5b, the piston rod 5b is used for driving vibration of the filter membrane 3b, the piston rod 5b can be directly connected with the filter component 3, the filter component 3 is directly driven to vibrate by controlling the piston rod 5b, other devices can be connected between the piston rod 5b and the filter component 3, and the filter component 3 is indirectly driven to vibrate by the piston rod 5 b. The utility model discloses preferred is: the filter assembly 3 is installed at a bottom position of the elution lid 1. The vibration component 5 also comprises a motor 5a, and the motor 5a is connected with a piston rod 5 b; a guide plate 9 is arranged above the elution device base 2 facing the elution device cover 1, namely the guide plate 9 is positioned below the filter membrane 3b and is abutted against the filter component 3; the piston rod 5b can be directly connected with the guide plate 9 and also can be connected through a connecting piece 5c, namely, the guide plate 9 and the piston rod 5b are respectively arranged at the upper end and the lower end of the connecting piece 5 c. The motor 5a can drive the piston rod 5b to move up and down, and the piston rod 5b can drive the connecting piece 5c to vibrate, so as to drive the guide plate 9 to vibrate.

The sample outflow module 7 is arranged on the elution device seat 2 and comprises a sample outflow channel 7a and a sample nozzle 7b for ejecting or sending the sample out of the elution device seat 2, wherein the sample outflow channel 7a and the sample nozzle 7b are connected through a pipeline (not shown in the figure), and the sample nozzle 7b is provided with a sample bottle (not shown in the figure) for receiving the eluent flowing out from the sample nozzle 7 b. The guide plate 9 is arranged above the opening at one end of the sample outflow channel 7a, and the guide plate 9 is provided with a sample port 9a communicated with the opening at one end of the sample outflow channel 7 a. The utility model discloses preferably directly set up sample outflow channel 7a on connecting piece 5c, sample mouth 9a on the guide plate 9 communicates with the one end opening of sample outflow channel 7a on connecting piece 5 c.

In the operation of membrane elution, the cover 1 and the seat 2 can be integrally molded, and when the cover and seat are integrally molded, the filter membrane 3b with microorganism particles must be filled with eluent, and then the filter assembly 3 is mounted on the cover 1. This results in the filter eluters being single in nature, and one filter eluter can elute the microbial particles from one filter 3b at a time.

In view of the above, one embodiment of the present invention is: the elution device cover 1 and the elution device seat 2 are in a detachable and fixed connection design, and a sample inflow module 6 is arranged on the elution device cover 1. The specific implementation mode is as follows: the elution device cover 1 and the elution device seat 2 can be fixedly connected by screws; a plurality of clamping grooves 2b can also be arranged on the elution apparatus seat 2, the clamping grooves 2b are all arranged above the elution apparatus seat 2 towards the elution apparatus cover 1 by taking the vertical central line of the elution apparatus seat 2 as the center, as shown in fig. 4, the clamping grooves 2b are transversely extending grooves, and a stop block is arranged above the clamping grooves 2 b; the elution device cover 1 is provided with a plurality of connecting blocks 1c (as shown in fig. 3), the plurality of connecting blocks 1c and the plurality of clamping grooves 2b are designed in a one-to-one correspondence manner, and the connecting blocks 1c are matched with the clamping grooves 2b, namely when the elution device cover 1 is connected with the elution device base 2, the connecting blocks 1c on the elution device cover 1 can be aligned to the notches of the clamping grooves 2b on the elution device base 2, the elution device cover 1 is rotated towards the direction of the clamping grooves 2b until the connecting blocks 1c enter the clamping grooves 2b to stop rotating, at the moment, the connecting blocks 1c are blocked by the stop blocks and the elution device base 2 from top to bottom and are not movable, so that the elution device cover 1 cannot move upwards to be separated from the elution device base 2, and. This connected mode simple structure need not to dismantle the screw when wasing, and simple rotation can the on-the-spot dismantlement, easy dismounting. Of course, the connection manner of the elution lid 1 and the elution lid holder 2 is not limited to the above.

The utility model discloses a further embodiment does: a sample inflow module 6 is disposed on the elution lid 1, the sample inflow module 6 includes a sample groove 6a disposed on the elution lid 1 and a sample inflow channel 6c, and both ends of the sample inflow channel 6c are respectively communicated with the sample groove 6a and the compression chamber 1a, that is, the sample groove 6a is communicated with the compression chamber 1a through the sample inflow channel 6 b. Since the filter assembly 3 is located in the compression chamber 1a and at the bottom of the cover 1, in practical operation, the eluent can be directly injected into the sample groove 6a, and the eluent can enter the compression chamber 1a through the sample inflow channel 6c and then flow onto the filter membrane 3 b. The sample groove 6a is provided with a sample groove cover 6b in a matching way, and the sample groove cover 6b is covered after eluent is added into the sample groove 6a, so that the eluent can be prevented from splashing or evaporating.

And in order to improve the use universality of the filter membrane elution device, the replacement of the filter component 3 is convenient, the utility model discloses further embodiment is: be provided with joint portion (not shown in the figure) on elution ware lid 1, the joint portion upper cover is equipped with elastic sealing ring 8, and filter membrane bracket 3a directly overlaps the joint in the joint portion in the elastic sealing ring 8 outside, and at this moment, elastic sealing ring 8 is located between joint portion and the filter membrane bracket 3a and compressed, and filter membrane bracket 3a is fixed under the effort between filter membrane bracket 3a and elastic sealing ring 8 and the outside elasticity effect of elastic sealing ring 8. When filter assembly 3 is taken off to needs, direct manual operation pulls down filter membrane bracket 3a, and when manual force was greater than effort and the outside elasticity of elastic seal circle 8 between filter membrane bracket 3a and the elastic seal circle 8, filter membrane bracket 3a broke away from elastic seal circle 8 and pulled down from the joint portion, and the installation and the dismantlement of filter assembly 3 are convenient for to this kind of mode, make things convenient for filter assembly 3's change for the filter membrane elution ware is applicable in the elution of the filter membrane 3b of multiple difference.

The working principle of the filter membrane elution device of the utility model is that: the elution device cover 1 is fixedly connected with the elution device seat 2, eluent is added into the sample groove 6a at the moment to cover the sample groove cover 6b, then an empty sample bottle containing the eluent is placed at the sample nozzle 7b, and the pressing handle 4a is pulled to the highest position, namely the pressing plate 4d and the filter membrane 3b are at the maximum distance position. At this time, the eluent enters the compression chamber 1a through the sample inflow channel 6c and is immersed on the filter membrane 3 b. The motor 5a is electrified to drive the piston rod 5b to reciprocate up and down, the piston rod 5b drives the connecting piece 5c to vibrate up and down to drive the guide plate 9 to vibrate up and down, the guide plate 9 drives the filter component 3 abutted against the guide plate 9 to vibrate, the filter membrane 3b vibrates to enable microbial particles on the filter membrane 3b to enter eluent, at the moment, the compression chamber 1a is communicated with the external atmosphere through the vent hole 1b, then the motor 5a is electrified, the guide plate 9, the filter membrane 3b and the like stop vibrating, then the pressing handle 4a is pressed downwards, an elution space is formed between the pressing plate 4d and the filter membrane 3b, the pressing handle 4a is pressed downwards, the pressing plate 4d is closer to the filter membrane 3b until the pressing plate 4d is located at the lower position of the vent hole 1b in the vertical direction, the elution space is sealed and smaller, the pressing handle 4a is continuously, the eluent on the filter membrane 3b is squeezed out and flows into the guide plate 9, enters the sample outflow channel 7a on the connecting piece 5c through the sample port 9a on the guide plate 9, then flows to the sample nozzle 7b through the pipeline, and flows into the sample bottle through the sample nozzle 7b, so that the collection of sample liquid (the eluent containing microorganism particles) is completed, and the subsequent research and analysis are carried out.

The pressing assembly 4 can be manually operated, namely, the pressing handle 4a and the pull-up pressing handle 4a are manually pressed, the utility model discloses preferably: offer the recess on the elution ware lid 1, a through-hole for pressing down 4c and reciprocate passes the recess, the cover is equipped with spring 4b on pressing down 4c, spring 4b one end with press handle 4a fixed connection, the other end and recess bottom fixed connection, when pressing down handle 4a and being in the highest position by pulling out, the spring is in natural state, when pressing down handle 4a, spring 4b is compressed, after clamp plate 4d extrusion filter membrane 3b accomplishes, press down handle 4a and move up under spring 4 b's elastic force effect and reset, move to highest position department under spring 4 b's effect until pressing down handle 4a, spring 4b resets.

When the sample bottle received the eluant of being located outflow by sample nozzle 7b, in order to avoid the sample bottle to fall down because of the operation panel unstability the condition, the utility model discloses preferably be provided with sample bottle fixed position 2a on eluant seat 2, sample bottle fixed position 2a is upper and lower opening, and the both sides lateral wall adopts the plastic material design, and the sample bottle is located at sample bottle fixed position 2a by both sides lateral wall card, and sample nozzle 7b sets up the top position at sample bottle fixed position 2a, and when sample bottle card was located sample bottle fixed position 2a, the sample bottle flat mouthful was just to sample nozzle 7b under. When the sample bottle is mounted or dismounted, the sample bottle can be directly mounted or dismounted by manual external force.

The elution device cover 1 is also provided with a sample bottle cover groove 12, and the opened bottle cover of the sample bottle can be placed in the sample bottle cover groove 12, so that the sample bottle cover is prevented from being lost.

Of course, the utility model discloses in also can not adopt motor 5a, direct manual operation connecting piece 5c or guide plate 9 or filter assembly 3 direct vibration. Adopt motor 5a to improve this utility model's automatic performance. In order to better control the operation or stop of the motor 5a, a control circuit module is further disposed in the elution device seat 2, and includes a circuit board (not shown in the figure) and a battery 10, which are electrically connected, the circuit board is electrically connected with the motor 5a, the battery 10 supplies power to the circuit board, and the circuit board controls the motor 5a to start or stop. The design of the battery 10 can ensure that the filter membrane elution device can be operated without an external power supply, is convenient to carry and operate on site, and has wide application range. Meanwhile, the charging interface 11 is arranged on the elution device seat 2, so that the battery 10 can be charged conveniently, when the electric quantity of the battery 10 is insufficient, the battery 10 can be charged through the charging interface 11, and the use flexibility of the filter membrane elution device is improved.

As is apparent from fig. 5 and 6, the baffle 9 may be formed in a flat plate shape or a tapered shape. When the guide plate 9 is flat, as shown in fig. 5, in order to facilitate the eluent dropped on the guide plate 9 from the filter membrane 3b to smoothly enter the sample flow position module 7, a plurality of sample flow grooves 9b are formed in the guide plate 9, the sample flow grooves 9b are circularly and uniformly arranged on the guide plate 9 by taking the sample port 9a as a center, the bottom of the sample flow groove 9b is designed to be an inclined plane, and the deeper the sample flow groove 9b is, the deeper the sample flow groove 9a is, so that the eluent on the guide plate 9 can smoothly flow into the sample port 9a to enter the sample flow position module 7. The guide plate 9 shown in fig. 6 is designed to be conical, at this time, the conical opening of the guide plate 9 with conical design is upward, the sample port 9a is located at the conical bottom, the eluent drops on the guide plate 9, and the eluent flows to the sample port 9a along the inclined side wall of the guide plate 9.

Filter membrane elution ware can be directly used with the large-traffic aerosol sample thief cooperation that is HRH-DSA350 by the model of Beijing Huilong and science and technology company research and development production, but wide application in public places such as bus station, railway station, subway, airport, public health fields such as hospital, disease control center, pharmaceutical factory still can be applied to food processing field, livestock farm, mail safety inspection, customs safety inspection and frontier defense military field etc..

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (10)

1. A filter membrane eluter comprising an eluter body (100), wherein the eluter body (100) comprises:

the filter component (3) consists of a filter membrane bracket (3 a) and a filter membrane (3 b) which adopts static electricity to trap microorganism particles, and the filter membrane (3 b) is fixedly arranged on the filter membrane bracket (3 a) or integrally formed with the filter membrane bracket (3 a);

a vibrating assembly (5) comprising a piston rod (5 b) configured to drive the filter membrane (3 b) to vibrate; before the filter membrane (3 b) vibrates, eluent can be injected into the filter membrane (3 b), and when the filter membrane (3 b) vibrates, biological particles on the filter membrane (3 b) enter the eluent;

the pressing assembly (4) comprises a pressing plate (4 d) and a pressing rod (4 c) which are integrally formed or fixedly connected, one side, back to the pressing plate (4 d), of the pressing rod (4 c) is provided with a pressing handle (4 a), and the pressing plate (4 d) is used for pressing the filter membrane (3 b) to enable eluent on the filter membrane (3 b) to seep out;

the compression chamber (1 a), the pressing plate (4 d) and the filtering component (3) are all arranged in the compression chamber (1 a), and the compression chamber (1 a) is provided with a vent hole (1 b) communicated with the outside;

sample outflow module (7), including sample outflow passageway (7 a) that one end opening set up in filter membrane (3 b) below, the other end opening part of sample outflow passageway (7 a) is connected with the sample bottle, and the sample bottle is configured into the eluant of oozing on receiving filter membrane (3 b).

2. The filter membrane eluter of claim 1, wherein the eluter body (100) includes an eluter cover (1) and an eluter base (2), the eluter cover (1) and the eluter base (2) being detachably and fixedly connected;

the filter component (3), the pressing component (4) and the compression chamber (1 a) are all arranged on the elution device cover (1);

the vibration component (5) and the sample outflow module (7) are arranged on the elution device seat (2).

3. The filter membrane elution device according to claim 2, wherein the elution device cover (1) is provided with a clamping portion for connecting the filter assembly (3), the filter membrane bracket (3 a) is clamped on the clamping portion, and an elastic sealing ring (8) is arranged between the filter membrane bracket (3 a) and the clamping portion.

4. The membrane eluter of claim 1, wherein the eluter body (100) further comprises a sample tank (6 a) for containing an eluting solution, the sample tank (6 a) being in communication with the compression chamber (1 a) through a sample inflow channel (6 c).

5. The filter membrane elution device of claim 2, wherein a control circuit module electrically connected to the vibration assembly (5) is further provided in the elution device base (2), and the control circuit module is used for controlling the vibration and stop of the vibration assembly (5).

6. The filter membrane elution device of claim 1, wherein the pressing assembly (4) further comprises a spring (4 b), the spring (4 b) is sleeved on the pressing rod (4 c) and fixedly connected with the pressing handle (4 a), and the other end of the spring (4 b) is fixedly connected with the elution device cover (1).

7. The filter membrane eluter of claim 1, wherein the filter assembly (3) is disposed at the bottommost portion of the eluter cover (1) in abutment with the eluter base (2);

one end of the elution device seat (2) facing the elution device cover (1) is provided with a guide plate (9), the guide plate (9) is connected with a piston rod (5 b), the guide plate (9) is provided with a sample port (9 a) communicated with an opening at one end of the sample outflow channel (7 a), and the elution liquid on the filter membrane (3 b) falls on the guide plate (9) and flows into the sample outflow channel (7 a) through the sample port (9 a).

8. The filter membrane eluter according to claim 7, wherein the flow guide plate (9) is provided with a plurality of sample flow grooves (9 b) communicating with the sample port (9 a);

the bottom of the sample flow groove (9 b) is designed to be inclined, and the depth of the sample flow groove (9 b) is deeper and deeper as approaching the sample port (9 a).

9. The filter membrane eluter of claim 7, characterized in that the flow guide plate (9) is of an upwardly open conical design, and the sample port (9 a) opens into the conical bottom of the flow guide plate (9).

10. The filter membrane eluter of claim 2, wherein the eluter base (2) is provided with a sample bottle fixing position (2 a), the sample bottle fixing position (2 a) is made of plastic material, and the sample bottle is directly clamped at the sample bottle fixing position (2 a).

Images