Anaerobic environment coprophilous fungus transplanting and separating equipment

Abstract

The utility model relates to the technical field of coprophilous fungus separation, in particular to anaerobic environment coprophilous fungus transplantation and separation equipment which comprises a main filtering module and a waste gas treatment module, and the main filtering module comprises a primary filtering device, a secondary filtering device and a liquid collecting device which are sequentially arranged from top to bottom. The primary filtering device and the secondary filtering device are arranged, so that primary filtering and secondary filtering of coprophilous fungus transplanting bacteria liquid can be achieved, an anaerobic environment can be provided, the activity of anaerobic bacteria in the separated coprophilous fungus transplanting bacteria liquid can be guaranteed, subsequent transplanting and application of the coprophilous fungus transplanting bacteria liquid can be guaranteed, and the coprophilous fungus transplanting bacteria liquid can be recycled. A pressurized filtering environment can be provided when the secondary filtering device is used, so that the secondary filtering effect and efficiency are improved; by arranging the waste gas treatment module, waste gas generated in the filtering process can be treated, carbon dioxide in the waste gas is effectively removed, and excrement smell carried in the waste gas is adsorbed and purified.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of coprozoa separation, especially to an anaerobic environment coprozoa transplantation separation equipment. BACKGROUND

[0002] The structural disorder of intestinal flora is an important factor for inducing various chronic diseases, and in recent years, domestic and foreign researches have found that through "coprozoa transplantation", that is, using intestinal flora from healthy people to restore the balance of the flora structure in chronic disease patients and to rebuild the intestinal microecology with normal structure, the rehabilitation of flora function can be promoted, so as to achieve the treatment effect of intestinal and extra-intestinal diseases.

[0003] For example, the patent application with the publication number CN221608068U in the prior art sets up filter screens with different pore diameters in multiple levels, which can improve the filtering efficiency, reduce impurities in the coprozoa transplantation bacterial solution, connect the air inlet to a vacuum pump to generate negative pressure in the collection tank, and improve the filtering efficiency through negative pressure filtration, so as to reduce the filtering difficulty caused by the complex impurities in the fecal sample and improve the filtering efficiency and effect.

[0004] However, during the process of multi-stage filtration and negative pressure filtration of the device, the fecal sample is in an aerobic environment, and most of the fecal sample is anaerobic bacteria, so it is impossible to guarantee the activity of the anaerobic bacteria finally separated in the aerobic environment, which further affects the transplantation and application of the anaerobic bacteria.

[0005] Therefore, the utility model provides an anaerobic environment coprozoa transplantation separation equipment. UTILITY MODEL CONTENT

[0006] Therefore, it is necessary to provide an anaerobic environment coprozoa transplantation separation equipment to solve the problems in the background art.

[0007] In order to achieve the above object, the technical scheme of the utility model is as follows: an anaerobic environment fecal bacteria transplantation separation equipment, including main filter module and waste gas treatment module, the main filter module includes the primary filter device, secondary filter device and liquid collecting device that are sequentially arranged from top to bottom, the primary filter device is provided with stirring assembly, the side upper end of the primary filter device is provided with feeding port, the upper end of the primary filter device is provided with first tail gas recovery pipeline, the inside of the primary filter device is provided with primary filter assembly, the inside of the secondary filter device is provided with multistage filter assembly, the primary filter device and the secondary filter device are connected through first pipeline, the secondary filter device and liquid collecting device are connected through second pipeline, the side of first pipeline is connected with anaerobic gas source through third pipeline, the side of second pipeline is connected with second tail gas recovery pipeline, the output end of first tail gas recovery pipeline and second tail gas recovery pipeline is connected with the input end of waste gas treatment module respectively, the output end of waste gas treatment module is connected with pressure reducing pump through fourth pipeline, the output end of pressure reducing pump is connected with pressure reducing filter device through fifth pipeline.

[0008] Further, the lower end of the liquid collecting device is connected with a fecal bacteria transplantation pipe through a sixth pipeline.

[0009] Further, it further includes an electrical control module, the electrical control module includes a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve, a fourth electromagnetic valve and a controller, the first electromagnetic valve is arranged on the first tail gas recovery pipeline, the second electromagnetic valve is arranged on the third pipeline, the third electromagnetic valve is arranged on the first pipeline and is arranged below the third pipeline, the fourth electromagnetic valve is arranged on the sixth pipeline, the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve and the fourth electromagnetic valve are electrically connected with the controller respectively.

[0010] Further, the side of the sixth pipeline is further provided with a backwashing water inlet, and the backwashing water inlet is arranged above the fourth electromagnetic valve, and the upper end of the primary filter device is further provided with a backwashing drain.

[0011] Further, the stirring assembly includes a motor arranged on the upper end of the primary filter device, a stirring shaft connected with the output end of the motor and penetrating the inside of the primary filter device, and stirring blades arranged on the stirring shaft.

[0012] Further, the primary filter assembly is a primary filter screen, the multistage filter assembly includes a plurality of secondary filter screens arranged in sequence from top to bottom, the filter screen aperture of each secondary filter screen is smaller than the filter screen aperture of the primary filter screen, and the filter screen aperture of the secondary filter screen decreases gradually from top to bottom.

[0013] Further, the anaerobic gas source includes a carbon dioxide gas source and a nitrogen gas source.

[0014] Further, the waste gas treatment module comprises an alkali washing tank and an activated carbon adsorption device connected through pipelines, the front ends of the first tail gas recovery pipeline and the second tail gas recovery pipeline extend into the alkali washing tank respectively, and the output end of the activated carbon adsorption device is connected with the decompression pump through a fourth pipeline.

[0015] Further, the oxygen detection device is arranged in the primary filter device and the secondary filter device respectively.

[0016] Further, the liquid collecting device is a tubular liquid collecting tank, and the liquid collecting tank is provided with a scale line.

[0017] The anaerobic environment fecal bacteria transplantation separation equipment has the advantages that: the primary filter device and the secondary filter device are arranged, so that the primary and secondary filtration of the fecal bacteria transplantation bacterial liquid can be realized, the use of the anaerobic gas source can not only provide an anaerobic environment, but also ensure the activity of the anaerobic bacteria in the separated fecal bacteria transplantation bacterial liquid, so as to ensure the transplantation and application of the subsequent fecal bacteria transplantation bacterial liquid, and the pressurized filtration environment can be provided when the secondary filter device is used, so as to improve the effect and efficiency of the secondary filtration; the waste gas treatment module is arranged, so that the waste gas generated in the filtration process can be treated, the carbon dioxide in the waste gas and the fecal odor carried in the waste gas can be effectively removed; and the decompression pump and the decompression filter device are arranged, so that the decompression filtration can be performed when the positive pressure filtration effect is poor, and the filtration effect and efficiency are further improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 FIG. 1 is a structural schematic view of an anaerobic environment fecal bacteria transplantation separation equipment according to the present application.

[0019] FIG. 1 is a structural schematic view of an anaerobic environment fecal bacteria transplantation separation equipment according to the present application. DETAILED DESCRIPTION

[0020] Embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only, are for the purpose of explanation only, and are not to be understood as limiting the present application, and the following embodiments and features in the embodiments can be combined with each other without conflict, if possible. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor, fall within the scope of protection of the present application.

[0021] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0022] Reference will now be made to the drawings, in which Figure 1The utility model provides an anaerobic environment fecal bacteria transplanting separation equipment, including main filter module and waste gas treatment module, the main filter module includes primary filter device 1, secondary filter device 2 and liquid collecting device 3 that are sequentially arranged from top to bottom, be provided with stirring subassembly on the primary filter device 1, the upper end of the side of primary filter device 1 is provided with feeding port 14, the upper end of primary filter device 1 is provided with first tail gas recovery pipeline 23, the inside of primary filter device 1 is provided with primary filter assembly, the inside of secondary filter device 2 is provided with multistage filter assembly, the first pipeline 18 is connected between primary filter device 1 and secondary filter device 2, the second pipeline 19 is connected between secondary filter device 2 and liquid collecting device 3, the side of first pipeline 18 is connected with anaerobic gas source through third pipeline 20, the side of second pipeline 19 is connected with second tail gas recovery pipeline 24, the output end of first tail gas recovery pipeline 23 and second tail gas recovery pipeline 24 is connected with the input end of waste gas treatment module respectively, the output end of waste gas treatment module is connected with pressure reducing pump 7 through fourth pipeline 21, the output end of pressure reducing pump 7 is connected with pressure reducing filter device 8 through fifth pipeline 22, that is, by setting primary filter device 1, stirring subassembly, primary filter assembly, secondary filter device 2, multistage filter assembly and anaerobic gas source, can be realized in anaerobic environment, to the primary and secondary filtration of fecal bacteria transplanting bacteria liquid, in addition, provide the environment of pressurized filtration when using secondary filter device 2, so as to improve the effect and efficiency of secondary filtration, further guarantee the activity of anaerobic bacteria in the separated fecal bacteria transplanting bacteria liquid, so as to guarantee the transplantation and application of subsequent fecal bacteria transplanting bacteria liquid, simultaneously, cooperate with the use of waste gas treatment module, can remove carbon dioxide in waste gas and purify the smell in excrement, and, by setting pressure reducing pump 7 and pressure reducing filter device 8, can carry out pressure reducing filtration when the effect of positive pressure filtration is poor, to improve the filtration effect and efficiency.

[0023] In a possible implementation, the pressure reducing filter device 8 used in the utility model is a prior art, including but not limited to the pressure reducing filter device 8 in CN207928802U, or a Buchner funnel used in a laboratory, which is not limited here, as long as it can realize pressure reducing filtration. In addition, if the existing Buchner funnel is used, the output end of the pressure reducing pump 7 and the input end of the Buchner funnel can be connected through the fifth pipeline 22.

[0024] In a possible implementation, referring to the drawings Figure 1 The lower end of the liquid collecting device 3 is connected with the fecal bacteria transplanting tube 4 through the sixth pipeline 28.

[0025] In a possible implementation, further comprising an electrical control module, the electrical control module comprising a first electromagnetic valve 25, a second electromagnetic valve 26, a third electromagnetic valve 27, a fourth electromagnetic valve 29 and a controller, the first electromagnetic valve 25 is arranged on the first tail gas recovery pipeline 23, the second electromagnetic valve 26 is arranged on the third pipeline 20, the third electromagnetic valve 27 is arranged on the first pipeline 18 and is arranged below the third pipeline 20, and the fourth electromagnetic valve 29 is arranged on the sixth pipeline 28, the first electromagnetic valve 25, the second electromagnetic valve 26, the third electromagnetic valve 27 and the fourth electromagnetic valve 29 are electrically connected with the controller, by arranging the first electromagnetic valve 25, the second electromagnetic valve 26, the third electromagnetic valve 27, the fourth electromagnetic valve 29 and the controller, in the process of fecal bacteria transplantation bacteria liquid separation and recovery by using the present anaerobic environment fecal bacteria transplantation separation device, first open the first electromagnetic valve 25, the second electromagnetic valve 26, the third electromagnetic valve 27, the fourth electromagnetic valve 29 and the anaerobic gas source, fill the mixed gas of carbon dioxide and nitrogen into the primary filtering device 1, the secondary filtering device 2, the liquid collecting device 3 and the fecal bacteria transplantation pipeline 4, until the oxygen detection device 17 detects that the oxygen content reaches the anaerobic environment preset threshold value, indicating that the inside of the primary filtering device 1 and the secondary filtering device 2 is in an anaerobic state; then continuously open the first electromagnetic valve 25 and the second electromagnetic valve 26, close the third electromagnetic valve 27 and the fourth electromagnetic valve 29, put a certain amount of fecal sample and sterile physiological saline through the feeding port 14, start the motor 9, use the motor 9 to drive the stirring blade 11 through the stirring shaft 10 to stir the fecal sample and the sterile physiological saline, which can realize the primary filtration of the fecal bacteria sample and the sterile physiological saline; then open the second electromagnetic valve 26 and the third electromagnetic valve 27, close the first electromagnetic valve 25 and continuously close the fourth electromagnetic valve 29, since the anaerobic gas source is arranged above the secondary filtering device 2, it can provide a pressurized filtering environment when the secondary filtering device 2 is used, so that the primary filtered fecal bacteria transplantation bacteria liquid can quickly pass through the multi-stage filtering assembly, thereby improving the effect and efficiency of the secondary filtration, the secondary filtered fecal bacteria transplantation bacteria liquid is collected in the liquid collecting tank, the scale line 32 on the liquid collecting tank can be used to observe the capacity of the fecal bacteria transplantation bacteria liquid in real time, if the difference between the capacity of the collected fecal bacteria transplantation bacteria liquid and the capacity of the input sterile physiological saline is less than the preset capacity difference threshold value, it indicates that the primary filtered fecal bacteria transplantation bacteria liquid is not filtered well by the secondary filtering device 2 and the anaerobic gas source, so the decompression pump 7 needs to be started for suction filtration, and the decompression filtering device 8 is used, which plays a role of decompression filtration and further improves the filtering effect and efficiency; when the filtration is completed, the first electromagnetic valve 25, the second electromagnetic valve 26, the third electromagnetic valve 27 and the fourth electromagnetic valve 29 are closed, which can complete the primary and secondary filtration of the fecal bacteria transplantation bacteria liquid, and the use of the anaerobic gas source can ensure the activity of the anaerobic bacteria in the separated fecal bacteria transplantation bacteria liquid, so as to ensure the subsequent transplantation and application of the fecal bacteria transplantation bacteria liquid.

[0026] In a possible implementation, the side of the sixth pipeline 28 is further provided with a backwashing water inlet 15, and the backwashing water inlet 15 is arranged above the fourth electromagnetic valve 29. The upper end of the primary filter device 1 is further provided with a backwashing water outlet 16. By arranging the backwashing water inlet 15 and the backwashing water outlet 16, after the primary and secondary filtration of the fecal bacteria transplantation bacterial solution is completed, the high-pressure backwashing process of the primary filter device 1 and the secondary filter device 2 can be realized by connecting a high-pressure water source to the backwashing water inlet 15, so as to remove the impurities trapped in the primary filter screen 12 and the secondary filter screen 13, and restore the filtering capacity of the primary filter device 1 and the secondary filter device 2 in a short time.

[0027] In a possible implementation, the stirring assembly includes a motor 9 arranged at the upper end of the primary filter device 1, a stirring shaft 10 connected to the output end of the motor 9 and penetrating the inside of the primary filter device 1, and stirring blades 11 arranged on the stirring shaft 10. By arranging the motor 9, the stirring shaft 10 and the stirring blades 11, the fecal sample and the sterile normal saline can be stirred, thereby improving the primary stirring effect.

[0028] In a possible implementation, the primary filter assembly is a primary filter screen 12, and the multi-stage filter assembly includes a plurality of secondary filter screens 13 arranged in a stacked manner from top to bottom. The filter screen aperture of each secondary filter screen 13 is smaller than the filter screen aperture of the primary filter screen 12, and the filter screen apertures of the secondary filter screens 13 gradually decrease from top to bottom. By arranging the primary filter screen 12 and the plurality of secondary filter screens 13, the fecal sample can be filtered in multiple stages, thereby improving the filtering effect and reducing the impurities in the fecal bacteria transplantation bacterial solution. In addition, the primary filter screen 12 and the plurality of secondary filter screens 13 can be made of stainless steel or nylon material, which can be flexibly selected according to actual conditions, and will not be limited here.

[0029] In a possible implementation, the anaerobic gas source includes a carbon dioxide gas source 30 and a nitrogen gas source 31. The mixed gas of carbon dioxide and nitrogen is used to provide an anaerobic environment for the fecal bacteria transplantation separation device, thereby ensuring the activity of anaerobic bacteria in the separated fecal bacteria transplantation bacterial solution.

[0030] In a possible implementation, the waste gas treatment module comprises the lye washing tank 5 and the activated carbon adsorption device 6 which are connected through a pipeline, the front ends of the first tail gas recovery pipeline 23 and the second tail gas recovery pipeline 24 respectively extend into the lye washing tank 5, and the output end of the activated carbon adsorption device 6 is connected with the pressure reducing pump 7 through the fourth pipeline 21; by arranging the lye washing tank 5 and the activated carbon adsorption device 6, the carbon dioxide component in the waste gas is removed by the lye washing tank 5, and the fecal odor carried in the waste gas is adsorbed and purified by the activated carbon adsorption device 6; in addition, the activated carbon adsorption device 6 comprises a shell and activated carbon particles filled in the shell.

[0031] In a possible implementation, the oxygen detection device 17 for detecting the oxygen content in the primary filter device 1 and the secondary filter device 2 is further included, the oxygen detection device 17 is arranged in the primary filter device 1 and the secondary filter device 2 respectively, the oxygen detection device 17 can adopt an oxygen sensor to detect the oxygen content in the primary filter device 1 and the secondary filter device 2 respectively, in addition, the oxygen detection device 17 can also adopt an anaerobic indicator, when the anaerobic indicator is adopted, the detection end of the anaerobic indicator is inserted into the primary filter device 1 and the secondary filter device 2 by means of opening windows in the primary filter device 1 and the secondary filter device 2 respectively, so as to detect the oxygen content in the primary filter device 1 and the secondary filter device 2, it should be noted that when the anaerobic indicator is adopted, the sealing property of the connection between the window and the detection end of the anaerobic indicator needs to be ensured, and a sealing ring can be arranged at the connection to ensure the sealing property.

[0032] In a possible implementation, the liquid collecting device 3 is a pipe-shaped liquid collecting tank, the liquid collecting tank is provided with a scale line 32, and the liquid collecting tank is made of transparent material, so as to facilitate observation of the fecal bacteria transplantation bacterial liquid collected in the interior and the capacity of the fecal bacteria transplantation bacterial liquid.

[0033] It should be noted that, in order to ensure the sealing property of the anaerobic environment fecal bacteria transplantation separation equipment during use, sealing covers are arranged at the feeding port 14, the backwashing water inlet 15 and the backwashing water outlet 16 respectively, the sealing cover can be fixedly connected with the feeding port 14, the backwashing water inlet 15 or the backwashing water outlet 16 in a threaded connection or buckle connection manner, and a gasket can be additionally arranged at the connection.

[0034] The utility model discloses a working principle as follows: the utility model provides an anaerobic environment fecal bacteria transplantation separation equipment, be applicable to fecal bacteria transplantation bacteria liquid separation when using, first, compared with the existing fecal bacteria transplantation separation equipment, the application provides anaerobic gas source, before carrying out fecal bacteria transplantation bacteria liquid separation, need open first electromagnetic valve 25, second electromagnetic valve 26, third electromagnetic valve 27, fourth electromagnetic valve 29 and anaerobic gas source, through anaerobic gas source to primary filter device 1, secondary filter device 2, liquid collecting device 3 and fecal bacteria transplantation pipe 4 fills in carbon dioxide and nitrogen gas mixed gas, utilize oxygen detection device 17 respectively to the oxygen content in primary filter device 1 and secondary filter device 2 inside detection, until oxygen content reaches anaerobic environment preset threshold value, confirm primary filter device 1 and secondary filter device 2 inside is anaerobic state, then continuously open first electromagnetic valve 25, second electromagnetic valve 26 and anaerobic gas source, close third electromagnetic valve 27 and fourth electromagnetic valve 29, put quantitative fecal sample and sterile normal saline through feeding port 14 and put into primary filter device 1 inside, open motor 9, utilize motor 9 through stirring shaft 10 drive stirring vane 11 to fecal sample and sterile normal saline are stirred, can realize the full mixing of both, so as to complete the primary filtration of mixed liquid, then close first electromagnetic valve 25 and continuously close fourth electromagnetic valve 29, open second electromagnetic valve 26 and third electromagnetic valve 27, start secondary filtration to mixed liquid, because anaerobic gas source sets up at the top of secondary filter device 2, can realize when providing pressurized filtration environment in secondary filter device 2 uses, so that the fecal bacteria transplantation bacteria liquid that passes primary filtration passes multistage filtration assembly, and then improve the effect and efficiency of secondary filtration, the fecal bacteria transplantation bacteria liquid that passes secondary filtration is collected in the liquid collecting groove, utilize the scale line 32 on liquid collecting groove, can real-time observation the capacity of fecal bacteria transplantation bacteria liquid, when the capacity difference of the fecal bacteria transplantation bacteria liquid in liquid collecting groove and the capacity of the sterile normal saline that input is less than preset capacity difference threshold value, explain secondary filtration effect is poor, need open decompression pump 7 and carry out suction filtration, cooperate the use of decompression filter device 8, play the decompression filtration purpose, further improve the filtration effect and efficiency, when filtering is finished, close first electromagnetic valve 25, second electromagnetic valve 26, third electromagnetic valve 27 and fourth electromagnetic valve 29, can complete primary and secondary filtration to fecal bacteria transplantation bacteria liquid, cooperate lye washing tank 5 and activated carbon adsorption device 6, can effectively remove carbon dioxide in waste gas and adsorb and purify the fecal smell carried in waste gas.

[0035] The above content is further detailed description of the utility model made in combination with specific implementation, and cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary skilled person in the art to which the utility model belongs, on the premise of not departing from the concept of the utility model, can make a number of simple deductions or substitutions, and all should be regarded as belonging to the protection scope of the utility model.

Claims

1. An apparatus for separating fecal bacteria in an anaerobic environment for a fecal microbiota transplantation, characterized by, The application relates to a waste gas treatment device, which comprises a main filtering module and a waste gas treatment module, wherein the main filtering module comprises, from top to bottom, a primary filtering device, a secondary filtering device and a liquid collecting device; a stirring assembly is arranged on the primary filtering device; a feeding port is arranged on the upper end of the side surface of the primary filtering device; a first tail gas recovery pipeline is arranged on the upper end of the primary filtering device; a primary filtering assembly is arranged in the primary filtering device; a multistage filtering assembly is arranged in the secondary filtering device; the primary filtering device and the secondary filtering device are connected through a first pipeline; the secondary filtering device and the liquid collecting device are connected through a second pipeline; an anaerobic gas source is connected to the side surface of the first pipeline through a third pipeline; a second tail gas recovery pipeline is connected to the side surface of the second pipeline; the output ends of the first tail gas recovery pipeline and the second tail gas recovery pipeline are connected to the input end of the waste gas treatment module; the output end of the waste gas treatment module is connected to a pressure reduction pump through a fourth pipeline; and the output end of the pressure reduction pump is connected to a pressure reduction filtering device through a fifth pipeline.

2. The device according to claim 1, wherein, The lower end of the liquid collecting device is connected to a fecal bacteria transplantation pipeline through a sixth pipeline.

3. The device according to claim 2, wherein the device is configured to separate the fecal bacteria in an anaerobic environment. The application further comprises an electrical control module, which comprises a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve, a fourth electromagnetic valve and a controller; the first electromagnetic valve is arranged on the first tail gas recovery pipeline; the second electromagnetic valve is arranged on the third pipeline; the third electromagnetic valve is arranged on the first pipeline and below the third pipeline; the fourth electromagnetic valve is arranged on the sixth pipeline; and the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve and the fourth electromagnetic valve are electrically connected to the controller.

4. The anaerobic fecal microbiota transplantation and separation device according to claim 3, characterized in that, The side surface of the sixth pipeline is further provided with a backwashing water inlet, and the backwashing water inlet is arranged above the fourth electromagnetic valve; and the upper end of the primary filtering device is further provided with a backwashing water outlet.

5. The device according to claim 1, wherein the device is used for isolating fecal bacteria in an anaerobic environment. The stirring assembly comprises a motor arranged on the upper end of the primary filtering device, a stirring shaft connected to the output end of the motor and penetrating the interior of the primary filtering device, and stirring blades arranged on the stirring shaft.

6. The device according to claim 1, wherein, The primary filtering assembly is a primary filter screen; the multistage filtering assembly comprises a plurality of secondary filter screens arranged in sequence from top to bottom; the filter screen aperture of each secondary filter screen is smaller than that of the primary filter screen; and the filter screen apertures of the secondary filter screens gradually decrease from top to bottom.

7. The device according to claim 1, wherein the device is used for isolating fecal bacteria in an anaerobic environment. The anaerobic gas source comprises a carbon dioxide gas source and a nitrogen gas source. 8.The device of claim 1, wherein the device is configured to be used in an anaerobic environment. The waste gas treatment module comprises an alkali washing tank and an activated carbon adsorption device connected through a pipeline; the front ends of the first tail gas recovery pipeline and the second tail gas recovery pipeline extend into the interior of the alkali washing tank; and the output end of the activated carbon adsorption device is connected to the pressure reduction pump through the fourth pipeline. 9.The device of claim 1, wherein The application further comprises an oxygen detection device for detecting the oxygen content in the primary filtering device and the secondary filtering device, and the oxygen detection device is arranged in the interior of the primary filtering device and the secondary filtering device. 10.The device of claim 1, wherein the device is configured to be used in an anaerobic environment. The liquid collecting device is a tubular liquid collecting tank, and the liquid collecting tank is provided with a scale.

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