Microorganism collecting and filtering device

Abstract

The invention relates to the technical field of microorganism filtering equipment, and discloses a microorganism collecting and filtering device which comprises a machine body, a liquid outlet pipe, a feeding assembly, a screening hopper and a refiltering assembly are arranged in the machine body, the feeding assembly is located above the screening hopper, the screening hopper is arranged on the refiltering assembly, and the refiltering assembly is rotationally connected to the machine body; the refiltering assembly comprises a collecting barrel, the screening hopper is communicated with the collecting barrel, the lower end of the collecting barrel penetrates through the machine body and is provided with a discharging pipe, and a second microfiltration membrane is arranged on the outer side wall of the collecting barrel; a sieve plate is arranged on the outer side wall of the collecting barrel and driven by a pushing assembly to rotate, an air washing assembly and a cleaning assembly are arranged on the machine body, and the air washing assembly and the cleaning assembly wash and clean the sieve plate. Air washing and flushing collaborative cleaning can effectively keep the interior of the device clean, prevent matter accumulation from affecting the filtering performance, reduce the manual maintenance cost and prolong the service life of the device.

Description

Technical Field

[0001] The present invention relates to the technical field of microbial filtration equipment, and in particular to a microbial collection and filtration device. Background Art

[0002] The efficiency and accuracy of microbial detection and analysis instruments are crucial in medical diagnosis, monitoring, and treatment. Rapid and accurate collection and analysis of microbial samples are crucial for early disease diagnosis, treatment plan development, and hospital infection prevention and control. Current microbial collection and filtration devices on the market suffer from numerous practical deficiencies and are unable to meet the stringent requirements of microbial detection and analysis in the medical field.

[0003] Some traditional microbial collection and filtration devices utilize simple filter structures that can only initially intercept large microbial particles in liquids. This results in low microbial filtration efficiency, making it impossible to efficiently enrich and accurately collect target microorganisms, making it difficult to meet the high sample purity requirements of microbial testing and analysis. Furthermore, these devices are weak in microbial immobilization and lack effective fixation methods, making it difficult for microorganisms to stably adhere within the device and easily dissipating with the liquid. This results in insufficient microbial collection, impacting the accuracy and reliability of subsequent testing and analysis results.

[0004] Even some devices with multi-stage filtration capabilities, such as the filtration equipment used in some microbial incubators, incorporate multiple filtration components, but lack efficient coordination between them. On the one hand, the complex filtration process results in lengthy sample processing times, failing to meet the demands for rapid diagnosis in medical settings. On the other hand, during the microbial immobilization phase, the various components fail to form an effective coordination system, making it difficult for microorganisms to accumulate stably within the device, significantly reducing the quality and efficiency of microbial collection.

[0005] In addition, during long-term use of existing devices, substances tend to adhere to and accumulate on the surface of the filter components, affecting the filtering effect. The cleaning process is usually complicated and requires a lot of manpower and time for disassembly, cleaning and maintenance, which increases medical costs and limits the continuous and efficient operation of the equipment. Although a microbial collection filter device disclosed in Chinese patent application number CN201911010241.3 can achieve the separation and retention of microorganisms, it has obvious deficiencies in microbial immobilization and cleaning and maintenance, and cannot meet the medical field's requirements for efficient, stable and accurate microbial collection and filtration devices.

[0006] Therefore, it is necessary to provide a microorganism collection and filtration device to solve the above technical problems. Summary of the Invention

[0007] The object of the present invention is to provide a microorganism collection and filtration device to solve the existing problems in the above-mentioned background technology.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] A microorganism collection and filtration device comprises a body, wherein a liquid outlet pipe, a feed assembly, a sieve bucket and a re-filtration assembly are provided in the body, wherein the feed assembly is located above the sieve bucket, and the sieve bucket is provided on the re-filtration assembly, and the re-filtration assembly is rotatably connected to the body, wherein the re-filtration assembly comprises a collection cylinder, and the sieve bucket is connected to the collection cylinder, wherein the lower end of the collection cylinder passes through the body and is provided with a discharge pipe, wherein a second microfiltration membrane is provided on the outer side wall of the collection cylinder, and the collection cylinder is obliquely provided in the body, and wherein the second microfiltration membrane on the collection cylinder is provided on the downward half side wall of the collection cylinder;

[0010] A sieve plate is provided on the outer side wall of the collecting cylinder, and the sieve plate is driven to rotate by a pushing component. A cleaning component is provided on the machine body, and the cleaning component flushes and cleans the sieve plate.

[0011] As a further solution of the present invention, the feed assembly includes a feed main pipe, and the feed main pipe is inserted into the machine body. One end of the feed main pipe located in the machine body is connected to a semi-annular pipe, and the semi-annular pipe is arranged above the screen bucket, and the semi-annular pipe is connected to a feed branch pipe.

[0012] As a further solution of the present invention, the screening bucket includes an arc-shaped bucket, the arc-shaped bucket is provided with screening holes and a feed hole, and the feed hole is connected to the collecting cylinder, and the lower end of the arc-shaped bucket is fixedly connected to a connecting ring;

[0013] An annular hole is provided at the upper end of the collecting cylinder, the connecting ring is clamped in the annular hole, and the connecting ring and the annular hole are connected by a locking screw.

[0014] As a further solution of the present invention, the pushing assembly includes a driving gear, a box body is provided on the outer side wall of the body, a driving motor is provided at the upper end of the box body, and the driving gear is located in the box body and installed on the driving shaft of the driving motor, the sieve plate is movably connected to the collecting cylinder, a limiting ring is provided on the sieve plate, a gear ring is provided on the limiting ring, and the gear ring is engaged with the driving gear.

[0015] As a further solution of the present invention, the cleaning assembly includes a flushing assembly, the flushing assembly includes a flushing main pipe, a valve is provided on the flushing main pipe, one end of the flushing main pipe is connected to a flushing branch pipe, and the flushing branch pipe extends into the body.

[0016] As a further solution of the present invention, the cleaning assembly includes a support and a sealing box, and the support and the sealing box are both arranged on the screen plate. A connecting rod is installed on the support through a rotating rod, and a cleaning drum is provided on the connecting rod. The cleaning drum is in contact with the screen plate. A driving blade is provided on the sealing box, and the driving blade is connected to the rotating rod through a reciprocating swinging mechanism.

[0017] As a further solution of the present invention, the reciprocating swing mechanism includes a turntable, which is coaxially arranged with the driving blade. The rotating rod extends into the sealed box and is installed with a connecting gear. A rack is slidably connected in the sealed box, and the rack is engaged with the connecting gear. A push rod is connected between the rack and the turntable for common rotation.

[0018] As a further solution of the present invention, the sieve plate is arranged in an arc shape, and the rotating rod is located on the line connecting the centers of the adjacent sieve plate sections.

[0019] The present invention uses the arc-shaped bucket of the sieve bucket to cooperate with the first microfiltration membrane for initial filtration, which can intercept some microorganisms and reduce the burden on subsequent filtration. The second microfiltration membrane in the re-filtration component further finely filters the liquid, which can further effectively intercept microorganisms and significantly improve the purity of microbial collection; the coordinated cleaning of air washing and flushing can effectively keep the inside of the device clean, prevent material accumulation from affecting the filtration performance, reduce labor maintenance costs, and extend the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings and examples.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of the present invention after removing the base frame and one of the half shells of the body;

[0023] Figure 3 yes Figure 2 Schematic diagram of the structure after removing the other half of the casing and the drive motor, box and air wash assembly;

[0024] Figure 4 yes Figure 3 Schematic diagram of the structure without the feed assembly, screen bucket and driving gear;

[0025] Figure 5 This is a schematic diagram of the structure of the re-filtration component of the present invention after the sieve plate is removed;

[0026] Figure 6 It is a structural diagram of the feed assembly and the screen bucket in the present invention;

[0027] Figure 7It is a schematic structural diagram of the air washing assembly of the present invention;

[0028] Figure 8 It is a schematic structural diagram of the cleaning component of the present invention;

[0029] Figure 9 yes Figure 8 Schematic diagram of the structure after removing the sealing box;

[0030] Figure 10 It is an enlarged view of the partial structure of the reciprocating swing mechanism in the present invention.

[0031] Figure: 1. Base frame; 2. Machine body; 3. Feed assembly; 301. Feed main pipe; 302. Semi-annular pipe; 303. Feed branch pipe; 4. Screen bucket; 401. Curved bucket; 402. Connecting ring; 403. Feed inlet; 404. Screen inlet; 5. Refiltration assembly; 501. Collection cylinder; 502. Screen plate; 503. Second microfiltration membrane; 504. Spiral guide plate; 6. Push assembly; 601. Driving gear ; 602, box body; 603, drive motor; 604, gear ring; 7, liquid outlet pipe; 8, cleaning assembly; 801, flushing main pipe; 802, support; 803 connecting rod; 804, cleaning drum; 805, sealing box; 806, driving blade; 807, reciprocating swing mechanism; 807a, turntable; 807b, connecting gear; 807c, rack; 807d, push rod; 808, flushing branch pipe. DETAILED DESCRIPTION

[0032] Example 1

[0033] like Figures 1-6 As shown, a microorganism collection and filtration device includes a base frame 1, and a body 2 is provided on the base frame 1. The body 2 includes two symmetrically arranged half shells, and the two half shells are connected by a plurality of symmetrically arranged connecting screws, and a sealing ring is provided between the two half shells, which facilitates the installation and maintenance of the internal components of the device. During installation, each component can be installed in one of the half shells first, and then the other half shell is fixed by the connecting screws. The sealing ring can effectively prevent liquid leakage and ensure the sealing of the device during operation.

[0034] A liquid outlet pipe 7, a feed assembly 3, a sieve bucket 4 and a re-filtration assembly 5 are provided in the body 2. A valve is provided on the liquid outlet pipe 7. The liquid outlet pipe 7 is arranged at the lower end of the body 2. The feed assembly 3 is located above the sieve bucket 4. The feed assembly 3 includes a feed main pipe 301, and the feed main pipe 301 is inserted into the body 2. One end of the feed main pipe 301 located in the body 2 is connected to a semi-annular pipe 302. The semi-annular pipe 302 is arranged above the sieve bucket 4. The semi-annular pipe 302 is connected to a feed branch pipe 303. The number and distribution position of the feed branch pipes 303 can be adjusted according to actual needs to adapt to different flow rates and properties of the liquid to be treated, thereby improving the uniformity of the feed and the applicability of the device.

[0035] The sieve bucket 4 is arranged on the re-filtration component 5, and the sieve bucket 4 includes an arc-shaped bucket 401. The arc-shaped bucket 401 is tilted and arranged in the body 2. The design of the arc-shaped bucket 401 increases the contact area with the liquid, so that the liquid can be more fully filtered for the first time, thereby improving the filtration efficiency. At the same time, the structure of the arc-shaped bucket 401 helps to guide the liquid to flow to the feed hole 403, thereby avoiding the accumulation of liquid in the sieve bucket 4. A plurality of sieve holes 404 and feed holes 403 are provided on the arc-shaped bucket 401. The sieve holes 404 are distributed in the upper part of the arc-shaped bucket 401, so that the liquid can enter the body 2 through the sieve holes 404. The part of the arc-shaped bucket 401 with the sieve holes 404 is compounded with a first microfiltration membrane. The feed hole 403 is arranged at the center of the arc-shaped bucket 401. The lower end of the arc-shaped bucket 401 is fixedly connected to a connecting ring 402, and the connecting ring 402 is connected to the feed hole 403.

[0036] The re-filtration component 5 is rotatably connected to the body 2. The re-filtration component 5 includes a collecting cylinder 501, and the feed hole is connected to the collecting cylinder 501. An annular hole is opened at the upper end of the collecting cylinder 501, and the connecting ring 402 is clamped in the annular hole. The connecting ring 402 and the annular hole are connected by a locking screw. The lower end of the collecting cylinder 501 passes through the body 2 and is provided with a discharge pipe. The discharge pipe is provided with a valve. A spiral guide plate 504 is provided inside the collecting cylinder 501. A second microfiltration membrane 503 is installed on the outer wall of the collecting cylinder 501. The collecting cylinder 501 is tilted and arranged in the body 2. The second microfiltration membrane 503 is arranged on the downwardly inclined part of the collecting cylinder 501 and is accurately installed on the upper half side wall of the cylinder body. The position is from the top of the collecting cylinder 501 downwardly extending to the side wall of the middle section of the cylinder body. When the liquid containing microorganisms flows into the collecting cylinder 501, the liquid flows naturally along the cylinder wall driven by the natural force of gravity. It shows an orderly dynamic process. The inclined setting greatly improves the re-filtration effect. During the flow process, the liquid can contact the second microfiltration membrane 503 in an all-round and more sufficient manner. Compared with the horizontal placement, the filtration area is significantly increased, making the filtration operation more efficient and thorough. At the same time, thanks to the inclined structure, the microorganisms intercepted by the second microfiltration membrane 503 will slide down and concentrate at the bottom of the collection barrel 501 under the dual effects of gravity and liquid flow. In this way, when cleaning is required, it is only necessary to open the discharge pipe valve set at the lower end of the collection barrel 501 through the body 2 to easily discharge the accumulated microorganisms, which provides great convenience for subsequent continuous work and effectively improves the practicality and convenience of the entire microorganism collection and filtration device. The second microfiltration membrane 503 is not set on the lower half of the collection barrel 501 as a whole to prevent the liquid from accumulating in the body 2 and then re-entering the collection barrel 501.

[0037] During use, the liquid containing microorganisms to be treated enters the device through the feed main pipe 301, and is sprayed relatively evenly into the sieve bucket 4 through the semi-annular pipe 302 and the feed branch pipe 303 to achieve preliminary dispersion. After the liquid enters the sieve bucket 4, the arc-shaped bucket 401 of the sieve bucket 4 is provided with sieve holes. The microorganisms in the liquid will be intercepted by the sieve holes and the composite first microfiltration membrane, and enter the collecting cylinder 501 connected to the sieve bucket 4 through the feed holes on the arc-shaped bucket 401 under the action of gravity. Most of the liquid flows into the body 2 through the sieve holes on the arc-shaped bucket 401. The collecting cylinder 501 is tilted in the body 2. After the liquid containing microorganisms enters the collecting cylinder 501, it flows in the collecting cylinder 501 under the action of gravity and the guidance of the spiral guide plate 504. During the flow process, the liquid inside the collecting cylinder 501 is in full contact with the second microfiltration membrane 503, and the microorganisms in the liquid will flow to the bottom of the collecting cylinder 501 with the liquid. In this process, the liquid is filtered again through the second microfiltration membrane 503 to further intercept the microorganisms and microorganisms, so that the purity of the microorganisms collected in the collecting cylinder 501 is higher, and the microorganisms intercepted by the second microfiltration membrane 503 remain in the collecting cylinder 501. The liquid after re-filtration flows out through the liquid outlet pipe 7. The liquid outlet pipe 7 is provided with a valve to control the outflow speed and flow rate of the liquid. The lower end of the collecting cylinder 501 is provided with a discharge pipe through the body 2, and the discharge pipe is also provided with a valve. When it is necessary to clean the microorganisms intercepted in the collecting cylinder 501, open the discharge pipe valve to discharge them.

[0038] Example 2

[0039] Based on the first embodiment, Figure 1-Figure 7 As shown, a plurality of sieve plates 502 are provided on the outer wall of the collecting cylinder 501, and the sieve plates 502 are movably connected to the collecting cylinder 501 in an equidistant annular manner. The sieve plates 502 and the collecting cylinder 501 can be movably connected by an axis. An axis seat is set at a corresponding position on the outer wall of the collecting cylinder 501, and the sieve plates 502 are installed on the axis seat through the axis, which can not only ensure the stable rotation of the sieve plates 502, but also ensure a certain sealing between the sieve plates 502 and the collecting cylinder 501 to prevent liquid leakage. It is worth noting that the structure of the sieve bucket 4 is that when the liquid enters the interior of the body 2 through the sieve hole and falls into the upper part of the body 2, it will inevitably flow through the sieve plate 502 to the bottom of the body 2 and to the liquid outlet pipe 7 to flow out of the body 2.

[0040] The sieve plate 502 is driven to rotate by the pushing assembly 6, which includes a driving gear 601. A box 602 is provided on the outer wall of the body 2, and a driving motor 603 is provided at the upper end of the box 602. The driving gear 601 is located in the box 602 and is installed on the driving shaft of the driving motor 603. A limiting ring 503 is provided on the sieve plate 502, and a gear ring 604 is provided on the limiting ring 503, and the gear ring 604 is engaged with the driving gear 601.

[0041] like Figures 1-10 A cleaning component 8 is provided on the machine body 2, and the cleaning component 8 includes a flushing component. The flushing component includes a flushing main pipe 801, and a valve is provided on the flushing main pipe 801. One end of the flushing main pipe 801 is connected to a flushing branch pipe 808, and the flushing branch pipe 808 extends into the machine body 2. The direction of the flushing branch pipe 808 can be optimized according to the shape of the collecting cylinder 501 and the rotation trajectory of the sieve plate 502. The oblique spraying method is adopted to better cover various parts of the sieve plate 502 and the collecting cylinder 501, thereby improving the cleaning effect.

[0042] It is worth noting that the flushing components can be set up in a single group or multiple groups. If the flushing components are set up in one group, they are installed on the side of the collecting tube 501 where the second microfiltration membrane 503 is provided. If one group of flushing components is set up, the flushing components can be connected to gas or liquid to clean the inside of the body 2. If multiple groups are set up, multiple groups of flushing components can be evenly arranged along the circumference of the body 2, and some flushing components can be connected to liquid and some flushing components can be connected to gas.

[0043] When the flushing assembly is connected to the gas, the cleaning assembly 8 is used to assist in cleaning the interior of the collection barrel 501. One end of the flushing main pipe 801 is connected to the flushing branch pipe 808, and the flushing branch pipe 808 extends into the body 2. When cleaning is required, the valve is opened, and the outside air enters the body 2 through the flushing main pipe 801 and the flushing branch pipe 808, and flows to the collection barrel 501. At this time, the sieve plate 502 is in a rotating state under the action of the pushing assembly 6. The airflow can more comprehensively flush the sieve plate 502 and the inner wall of the collection barrel 501, blowing off the microorganisms attached thereto. The blown-off microorganisms will move to the bottom of the collection barrel 501 under the action of gravity, and finally be discharged through the discharge pipe, thereby keeping the interior of the collection barrel 501 and the second microfiltration membrane 503 clean, and maintaining good filtration performance of the device. After the device has been running for a period of time, the flushing assembly is started, and the airflow is used to clean the interior of the collection barrel 501 in conjunction with the rotation of the sieve plate 502, ensuring that the device continues to operate stably and efficiently completes the microbial collection and filtration work.

[0044] It is worth noting that in this device, when the drive motor 603 is started, it drives the driving gear 601 to rotate. Due to the meshing relationship between the gear ring 604 and the driving gear 601, the sieve plate 502 will be driven to rotate around the collecting cylinder 501. The purpose of the sieve plate 502 rotating around the collecting cylinder 501 is to enable the flushing component to clean each sieve plate 502. It is worth noting that when the device filters the material, the pushing component 6 is not running. When the liquid enters the body 2 through the sieve hole, it falls into the upper half of the body 2 and will inevitably pass through one or more sieve plates 502 to the bottom of the body 2 and flow out of the body 2 to the liquid outlet pipe 7.

[0045] When the flushing assembly is connected to the liquid, the sieve plate 502 is flushed and cleaned. The flushing pipe 801 should be connected to a high-pressure water source to ensure that the sprayed water flow has sufficient impact force to drive the driving blade 806 to rotate and flush the sieve plate 502. The sieve plate 502 is provided with a support 802 and a sealing box 805. The support 802 is installed with a connecting rod 803 through a rotating rod. The connecting rod 803 is provided with a cleaning drum 804. The cleaning drum 804 contacts the sieve plate 502. The surface of the cleaning drum 804 can be made of soft and durable material. A material with certain adsorption properties, such as a sponge or bristles, can effectively clean the microorganisms on the sieve plate 502 without causing damage to the sieve plate 502. A driving blade 806 is provided on the sealing box 805. The driving blade 806 can adopt an arc design to increase the contact area with the water flow. The driving blade 806 is connected to the rotating rod through a reciprocating swing mechanism 807. The sealing box 805 has good sealing properties to prevent water from entering the interior of the sealing box 805 and affecting the normal operation of the reciprocating swing mechanism 807.

[0046] The reciprocating swing mechanism 807 includes a turntable 807a, which is coaxially arranged with the driving blade 806. The rotating rod extends into the sealing box 805 and is installed with a connecting gear 807b. The sieve plate 502 is arranged in an arc shape, and the rotating rod is precisely positioned on the line connecting the center points of the cross sections of adjacent sieve plates 502. In order to ensure that the cleaning drum 804 can fully move the sieve plate 502 at the optimal angle and motion trajectory during the rotation of the sieve plate 502, by setting the rotating rod in this position, the force of the cleaning drum 804 can be evenly distributed on the surface of the sieve plate 502 when it swings back and forth, effectively improving the cleaning efficiency and quality, and ensuring that the sieve plate 502 always maintains good filtration performance. A rack 807c is slidably connected in the sealing box 805, and the rack 807c is meshed with the connecting gear 807b. The rack 807c and the turntable 807a are connected to each other by a push rod 807d that rotates together.

[0047] Allowing the remaining airflow and loose materials within the device time to settle, when cleaning is required, the control system activates the drive motor 603, driving the active gear 601 to rotate. Due to the meshing relationship between the gear ring 604 and the active gear 601, the sieve plate 502 is driven to slowly rotate around the collection tube 501. At the same time, the flushing main 801 of the cleaning assembly 8 sprays water from the bottom of the body 2. Each sieve plate 502 is provided with a drive blade 806 at a corresponding position. As the push assembly 6 drives the sieve plate 502 to rotate, the sieve plate 502 drives the corresponding drive blade 806 to gradually rotate into the water spraying range of the flushing main 801. Once the drive blade 806 enters the range of the flushing main 801, the water flow with sufficient impact force immediately impacts the drive blade 806. Because the drive blade 806 is coaxial with the turntable 807a, after being impacted by the water flow, the drive blade 806 drives the turntable 807a to rotate synchronously. During the rotation of the turntable 807a, the push rod 807d drives the rack 807c, which is rotatably connected to it, to slide back and forth linearly within the sealed box 805. Because the rack 807c is meshed with the connecting gear 807b, the reciprocating sliding of the rack 807c causes the connecting gear 807b to rotate back and forth. The connecting gear 807b is mounted on the rotating rod, which in turn drives the rotating rod to rotate back and forth. The reciprocating rotation of the rotating rod drives the cleaning drum 804 to swing back and forth through the connecting rod 803. The cleaning drum 804 contacts the sieve plate 502 and wipes and cleans the surface of the sieve plate 502 during the reciprocating swing. Throughout the cleaning process, the push assembly 6 continues to work, ensuring that the sieve plate 502 rotates slowly, allowing the drive blades 806 at various positions to sequentially enter the range of action of the flushing main 801, thereby achieving comprehensive cleaning of each sieve plate 502 by the cleaning drum 804. At the same time, the water sprayed from the flushing main 801 will also flush the sieve plate 502, further washing away the substances wiped off by the cleaning drum 804, and finally restoring the sieve plate 502 to a good filtering performance.

[0048] This collaborative working mode closely combines the rotation of the sieve plate 502 by the pushing component 6 with the flushing and cleaning action of the cleaning component 8, greatly improving the cleaning efficiency and effect, ensuring that the device can operate continuously and stably, and efficiently complete the microbial collection and filtration work.

Claims

1. A microorganism collection and filtration device, comprising a body, characterized in that: The body is provided with a liquid outlet pipe, a feed assembly, a sieve bucket and a re-filtration assembly; wherein the feed assembly is located above the sieve bucket, and the sieve bucket is arranged on the re-filtration assembly, and the re-filtration assembly is rotatably connected to the body; The re-filtration assembly includes a collecting cylinder, the sieve bucket is connected to the collecting cylinder, the lower end of the collecting cylinder is provided with a discharge pipe penetrating the body, the outer side wall of the collecting cylinder is provided with a second microfiltration membrane, and the second microfiltration membrane is arranged on the downward half side wall of the collecting cylinder, and the collecting cylinder is arranged obliquely in the body; A sieve plate is provided on the outer side wall of the collecting cylinder, and the sieve plate is driven to rotate by a pushing component. A cleaning component is provided on the machine body.

2. The microorganism collection and filtration device according to claim 1, characterized in that: The feed assembly includes a feed main pipe, which is inserted into the machine body. One end of the feed main pipe located in the machine body is connected to a semi-annular pipe, which is arranged above the screen bucket and is connected to a feed branch pipe.

3. The microorganism collection and filtration device according to claim 1, characterized in that: The sieve bucket comprises an arc-shaped bucket, the arc-shaped bucket is provided with a sieve hole and a feed hole, and the feed hole is connected to the collecting cylinder, and the lower end of the arc-shaped bucket is fixedly connected with a connecting ring; An annular hole is provided at the upper end of the collecting cylinder, the connecting ring is clamped in the annular hole, and the connecting ring and the annular hole are connected by a locking screw.

4. The microorganism collection and filtration device according to claim 1, characterized in that: The pushing assembly includes a driving gear, a driving motor is provided on the outer side wall of the body, the pushing assembly includes a driving gear, and the driving gear is installed on the driving shaft of the driving motor, the sieve plate is movably connected to the collecting cylinder, a limiting ring is provided on the sieve plate, a gear ring is provided on the limiting ring, and the gear ring is engaged with the driving gear.

5. The microorganism collection and filtration device according to claim 1, characterized in that: The cleaning assembly includes a flushing assembly, and the flushing assembly includes a flushing main pipe. A valve is provided on the flushing main pipe. One end of the flushing main pipe is connected to a flushing branch pipe, and the flushing branch pipe extends into the machine body.

6. The microorganism collection and filtration device according to claim 1, characterized in that: The cleaning assembly includes a support and a sealing box, and the support and the sealing box are both arranged on the screen plate. A connecting rod is installed on the support through a rotating rod. A cleaning drum is provided on the connecting rod. The cleaning drum is in contact with the screen plate. A driving blade is provided on the sealing box. The driving blade is connected to the rotating rod through a reciprocating swinging mechanism.

7. The microorganism collection and filtration device according to claim 6, characterized in that: The reciprocating swing mechanism includes a turntable, which is coaxially arranged with the driving blade. The rotating rod extends into the sealing box and is installed with a connecting gear. A rack is slidably connected in the sealing box, and the rack is engaged with the connecting gear. A push rod is connected between the rack and the turntable for common rotation.

8. The microorganism collection and filtration device according to claim 6, characterized in that: The sieve plate is arranged in an arc shape, and the rotating rod is located on the line connecting the centers of the adjacent sieve plate sections.

Images