Portable field screening device for environmental remediation microbial strains

Abstract

The invention discloses a portable field screening device for environmental remediation microbial strains, and relates to the field of environmental remediation. The invention relates to a portable field screening device for environmental remediation microbial strains, which comprises a tank body which is a high-strength and light-weight aluminum alloy tank, and further comprises a filter cartridge arranged in the tank body, a filter element arranged in the tank body, and a filter element arranged in the tank body, the driving motor is fixedly connected to the upper end of the tank body; the driving shaft is fixedly connected to the output end of the driving motor; solid-liquid separation of the soil turbid liquid is efficiently completed through a centrifugal and ultrafiltration graded filtration mode, compared with a traditional method, the device has the advantages of being high in portability, high in separation efficiency and good in effect, impurities can be accurately intercepted, microbial losses are reduced, microbial strains with specific functions are rapidly screened for an environment restoration site, a high-quality bacterium-containing liquid sample is provided, and the method is suitable for popularization and application. The efficiency and accuracy of screening of microbial strains in environment restoration work are improved, and efficient development of the environment restoration work is promoted.

Description

Technical Field

[0001] This invention belongs to the field of environmental remediation technology, and more specifically, relates to a portable device for on-site screening of environmental remediation microbial strains. Background Technology

[0002] In environmental remediation, microbial remediation has become one of the key technologies for treating soil pollution (such as petroleum hydrocarbon pollution and heavy metal pollution) due to its advantages such as high efficiency, environmental protection and low cost. Precisely screening microbial strains with specific functions (such as efficient degradation of pollutants and tolerance to extreme environments) from polluted soil is the core prerequisite for building a microbial remediation system and directly determines the effectiveness and implementation efficiency of the remediation plan.

[0003] Currently, the screening process for soil microbial strains generally involves the following steps: soil sampling → laboratory pretreatment → solid-liquid separation → microbial culture and identification. Among these steps, traditional solid-liquid separation equipment is difficult to transport to the field. Large centrifuges and vacuum filtration devices commonly used in laboratories are bulky and heavy, and rely on fixed site power and supporting facilities. They cannot meet the rapid operation requirements of field contaminated sites. In the event of an emergency remediation scenario, the time-consuming sample transportation and environmental changes can easily lead to the decline of microbial activity, delaying the remediation opportunity, and even causing the screening results to deviate from the true in-situ microbial characteristics of the soil.

[0004] In the prior art, although there are some simple on-site separation devices, their separation effect is poor and the filter pores are easily clogged. Especially when processing soil suspensions with high solid content, the filtration flux drops sharply and the processing time for a single sample can be as long as several hours, which is difficult to meet the needs of batch samples or rapid screening. In view of this, the present invention is proposed. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a portable device for on-site screening of environmental remediation microbial strains that can overcome or at least partially solve the above problems.

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows: a portable device for on-site screening of environmental remediation microbial strains, comprising a tank, wherein the tank is a high-strength, lightweight aluminum alloy tank, and further comprising: a filter cartridge disposed within the tank; a drive motor fixedly connected to the upper end of the tank; a drive shaft fixedly connected to the output end of the drive motor, the lower end of the drive shaft extending downward into the interior of the filter cartridge and fixedly connected to the lower end of the interior of the filter cartridge; and a delivery pipe fixedly connected to one side of the upper end of the tank, wherein the outlet of the delivery pipe is located at... Inside the tank, facing the interior of the filter cartridge; a slag discharge pipe, fixedly connected to the upper side of the tank, the slag discharge port of the slag discharge pipe extending downward to the lower end of the interior of the filter cartridge; a discharge pipe connected to the lower end of one side of the tank, and movable rollers symmetrically installed on the lower end of one side of the tank; a handle fixedly connected to the upper end of the tank on the side of the movable rollers; a support block fixedly connected to the lower end of the tank away from the movable rollers; an insertion interface horizontally opened below the filter cartridge in the tank; a fixing frame inserted into the insertion interface; and an ultrafiltration screen fixedly connected inside the fixing frame.

[0007] To facilitate reducing the frequency of cleaning the ultrafiltration screen, the ultrafiltration screen is further described as a microporous stainless steel screen with an upwardly convex arc design.

[0008] To further improve the stability of the filter cartridge rotation, two support rods are symmetrically installed on both sides of the tank near the filter cartridge. A support is fixedly connected to one end of the support rod near the filter cartridge, and a limiting roller is rotatably connected to the support. The limiting roller abuts against the rolling of the filter cartridge.

[0009] To facilitate backflushing of the filter cartridge and prevent it from being quickly blocked, a first air jet pipe is fixedly connected to the tank body near the filter cartridge via a support rod. The first air jet pipe is located below the limiting roller, and multiple first air jet heads are equidistantly connected to the side of the first air jet pipe near the filter cartridge. The air jet nozzles of the first air jet heads face the filter holes of the filter cartridge.

[0010] To facilitate the supply of air to the first jet pipe by rotating the filter cartridge, a gas cylinder is further fixedly connected laterally to the tank near the support rod. A piston block is slidably connected inside the gas cylinder, and a tension spring is installed inside the gas cylinder. The two ends of the tension spring are fixedly connected to the gas cylinder and the piston block, respectively. The end of the support rod away from the support extends into the gas cylinder and is fixedly connected to the piston block. The limiting roller is an eccentric wheel. The gas cylinder has an air inlet and an air outlet. A one-way valve is installed in both the air inlet and the air outlet of the gas cylinder. The air outlet of the gas cylinder is connected to the air inlet of the first jet pipe through a connecting gas pipe. A first electric valve is installed at the liquid inlet of the conveying pipe and the material outlet of the slag discharge pipe.

[0011] To facilitate a continuous supply of air to the first jet pipe, the limiting rollers on the two supports are further arranged in an alternating manner, so that the two air cylinders alternately supply air to the first jet pipe.

[0012] To facilitate the pressure relief of the air pressure above the ultrafiltration screen inside the tank, a pressure detector is further fixedly installed on the tank above the ultrafiltration screen, and an exhaust pipe is fixedly connected to the tank above the ultrafiltration screen, with a second electric valve installed at the air inlet of the exhaust pipe.

[0013] To facilitate backflushing and cleaning of the ultrafiltration screen, a second jet pipe is further provided in the tank below the ultrafiltration screen. Multiple sets of second jet heads are symmetrically connected to the second jet pipe, with the jet heads of the second jet heads facing the ultrafiltration screen. The exhaust end of the exhaust pipe extends into the tank and is connected to the air inlet of the second jet pipe.

[0014] To facilitate comprehensive and thorough backflushing of the ultrafiltration screen surface, the two sets of second jet heads on the second jet pipe are symmetrically and alternately distributed. The second jet heads are inclinedly mounted on the second jet pipe, and the second jet pipe and the exhaust pipe are rotatably connected through a rotary joint.

[0015] To further improve the efficiency of liquid discharge, the lower interior of the tank is provided with an inclined guide surface, which gradually slopes downward toward the discharge pipe.

[0016] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Attached Figure Description

[0017] In the attached diagram: Figure 1 This is a front view schematic diagram of the present invention; Figure 2 This is a schematic diagram of the structure of the present invention; Figure 3 For the present invention Figure 2 A schematic diagram of the structure of part A; Figure 4 For the present invention Figure 2 A structural diagram of section B; Figure 5 This is a three-dimensional structural diagram of the relationship between the fixed frame and the ultrafiltration screen in this invention; Figure 6 This is a three-dimensional structural diagram of the relationship between the second jet pipe and the second jet head in this invention.

[0018] In the diagram: 1. Tank body; 101. Conveying pipe; 102. Slag discharge pipe; 103. Discharge pipe; 104. Fixing frame; 105. Ultrafiltration screen; 106. Moving roller; 107. Support block; 108. Handle; 109. Pressure detector; 2. Filter cartridge; 201. Drive motor; 202. Drive shaft; 3. Support rod; 301. Support; 302. Limiting roller; 303. Air cylinder; 304. Piston block; 305. Tension spring; 306. Connecting air pipe; 307. First jet pipe; 308. First jet head; 4. Exhaust pipe; 401. Rotary joint; 402. Second jet pipe; 403. Second jet head. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0020] Example 1: Refer to Figures 1-6 A portable device for on-site screening of environmental remediation microbial strains is disclosed. The device includes a tank 1, which is a high-strength, lightweight aluminum alloy tank. It also includes: a filter cartridge 2 disposed inside the tank 1; a drive motor 201 fixedly connected to the upper end of the tank 1; a drive shaft 202 fixedly connected to the output end of the drive motor 201, with its lower end extending downwards into the interior of the filter cartridge 2 and fixedly connected to the lower end of the filter cartridge 2; and a delivery pipe 101 fixedly connected to one side of the upper end of the tank 1, with its outlet located inside the tank 1 and facing towards... The interior of the filter cartridge 2 includes: a slag discharge pipe 102, fixedly connected to one side of the upper end of the tank body 1, with the slag extraction port of the slag discharge pipe 102 extending downward to the lower end of the interior of the filter cartridge 2; a discharge pipe 103 connected to the lower end of one side of the tank body 1; symmetrically installed moving rollers 106 on the lower end of one side of the tank body 1; a handle 108 fixedly connected to the upper end of the tank body 1 on the side of the moving rollers 106; a support block 107 fixedly connected to the lower end of the tank body 1 away from the moving rollers 106; a horizontal insertion interface opened in the tank body 1 below the filter cartridge 2; a fixed frame 104 inserted into the insertion interface; and an ultrafiltration screen 105 fixedly connected inside the fixed frame 104.

[0021] In environmental remediation, screening for microbial strains with specific functions is a core step. This requires preparing the soil into a suspension and then efficiently separating the solid and liquid components to obtain the liquid containing microorganisms for subsequent screening. Traditional screening devices using solid-liquid separation methods have significant drawbacks: large laboratory centrifuges are inconvenient to carry and cannot be adapted to rapid on-site processing; filter paper has low filtration efficiency, is prone to clogging, and can also trap microorganisms, causing losses; simple on-site devices have poor separation effects, and residual impurities affect the accuracy and efficiency of subsequent screening.

[0022] This portable on-site screening device for environmental remediation microbial strains can be easily moved to a designated location on-site using handles 108 and casters 106. The device is placed vertically with the support block 107 in contact with the ground. Combined with the high-strength, lightweight aluminum alloy tank 1, it ensures structural strength while reducing overall weight, achieving convenient movement and stable support to meet the needs of rapid on-site operations. After placing the device, the drive motor 201 can be started, and the drive shaft 202 will drive the filter cartridge 2 to rotate rapidly. Soil suspension is then transported into the filter cartridge 2 through the delivery pipe 101. Under centrifugal force, the liquid mixed with microbial strains leaves the filter cartridge 2 through the filter holes. Larger soil particles and colloidal substances are intercepted, achieving preliminary solid-liquid separation. It also allows the liquid adsorbed in the solid to separate under centrifugal force, improving the liquid separation efficiency. The liquid that has passed through the initial screening of the filter cartridge 2, carrying the remaining fine soil particles and colloidal substances, falls to the ultrafiltration screen 105. The liquid passes through the filter screen and is discharged through the discharge pipe 103, while impurities are intercepted by the ultrafiltration screen 105, completing the graded filtration. This ensures the purity of the liquid used for subsequent microbial screening and reduces the interference of impurities on the accuracy and efficiency of screening.

[0023] This device supports immediate screening upon arrival, without relying on laboratory equipment. From preparing soil suspensions to obtaining bacterial filtrates, the entire process can be completed quickly on-site (centrifugation and filtration processes are short and suitable for emergency remediation scenarios). Compared to the traditional sampling-transportation-laboratory processing mode, it significantly reduces the time cycle (for complex site samples, the traditional process takes several hours to several days, while this device only takes tens of minutes to process on-site), helping to facilitate rapid decision-making on remediation solutions.

[0024] By using centrifugation and ultrafiltration for graded treatment, centrifugal force is used to accelerate separation and reduce microbial retention, while ultrafiltration mesh 105 precisely intercepts fine particles. The microbial loss rate in the filtrate is low (avoiding the retention problem of filter paper filtration), and there are few impurities remaining. Tests have shown that after treating suspensions such as oily sludge and heavy metal contaminated soil, the amount of soil particles remaining in the filtrate is lower than that of conventional filter paper filtration, the survival rate of microorganisms is improved, and the strains subsequently screened truly reflect the in-situ function of the soil.

[0025] The aluminum alloy tank 1 balances strength and lightweight (weighing less than traditional small laboratory centrifuges). The handle 108 and the moving rollers 106 are designed for field transport. The components are firmly connected. After multiple field tests involving bumps and processing different soil samples, the key components such as the drive motor 201 and the ultrafiltration screen 105 have shown stable performance, meeting the needs of long-term outdoor operations and reducing equipment maintenance costs.

[0026] High-quality bacterial filtrate can be directly used for subsequent rapid on-site testing (such as microbial activity detection and functional gene PCR amplification), or connected to a portable culture module (if the device is expanded and used in conjunction with other devices) to accelerate the screening of highly efficient remediation strains suitable for contaminated sites, promote the upgrading of environmental remediation from laboratory pre-screening to on-site precise screening and immediate application, and improve the timeliness and targeting of remediation projects.

[0027] Example 2: Refer to Figures 1-6 A portable device for on-site screening of environmental remediation microbial strains is basically the same as that in Example 1. However, the ultrafiltration screen 105 is a microporous stainless steel screen with an upwardly convex arc design.

[0028] When the suspension initially filtered by filter cartridge 2 falls onto ultrafiltration screen 105, the curved surface causes impurities to move to the outside of ultrafiltration screen 105 under the combined action of gravity and centrifugal force (due to the residual kinetic energy from the rotation of filter cartridge 2), rather than accumulating in the middle of the screen. This dynamic dispersion process effectively delays the accumulation of impurities that clog the micropores of the screen, extends the continuous working time of ultrafiltration screen 105, reduces operational interruptions caused by frequent cleaning or replacement of the screen, ensures the efficient and continuous progress of the solid-liquid separation process, improves the stability and practicality of the device's on-site operation, and allows microbial liquid to pass smoothly through the filter screen, providing a sufficient and pure sample source for subsequent strain screening.

[0029] Example 3: Reference Figures 1-6 A portable device for on-site screening of environmental remediation microbial strains is basically the same as that in Example 2. Furthermore, two support rods 3 are symmetrically installed on both sides of the tank 1 near the filter cartridge 2. A support 301 is fixedly connected to one end of the support rod 3 near the filter cartridge 2. A limiting roller 302 is rotatably connected to the support 301, and the limiting roller 302 rolls against the filter cartridge 2.

[0030] During operation, the filter cartridge 2 rotates rapidly driven by the drive motor 201. The support rods 3, supports 301, and limiting rollers 302 symmetrically arranged on both sides of the tank 1 form a lateral support structure for the filter cartridge 2. The limiting rollers 302 roll against the filter cartridge 2, which on the one hand limits the radial displacement of the filter cartridge 2 during rotation, preventing it from shaking or deviating significantly due to high-speed rotation and ensuring the stability of the rotation trajectory. On the other hand, the rolling contact method, compared with rigid fixation, can effectively reduce frictional resistance, neither hindering the rapid rotation of the filter cartridge 2, nor hindering the overall stability of the filter cartridge 2 in centrifugal separation operation by providing stable support, making the solid-liquid separation process smoother and more efficient, and helping the device to stably perform the centrifugal primary screening function.

[0031] Example 4: Reference Figures 1-6A portable device for on-site screening of environmental remediation microbial strains is basically the same as that in Example 3. Furthermore, a first jet pipe 307 is fixedly connected to the inside of the tank 1 near the filter cartridge 2 by a support rod. The first jet pipe 307 is located below the limiting roller 302. Multiple first jet heads 308 are equidistantly connected to the side of the first jet pipe 307 near the filter cartridge 2. The jet outlets of the first jet heads 308 face the filter holes of the filter cartridge 2.

[0032] A cylinder 303 is horizontally fixedly connected to the tank body 1 near the support rod 3. A piston block 304 is slidably connected inside the cylinder 303. A tension spring 305 is installed inside the cylinder 303. The two ends of the tension spring 305 are fixedly connected to the cylinder 303 and the piston block 304, respectively. The end of the support rod 3 away from the support 301 extends into the cylinder 303 and is fixedly connected to the piston block 304. The limiting roller 302 is an eccentric wheel. An air inlet and an air outlet are provided on the cylinder 303. A one-way valve is installed in both the air inlet and the air outlet of the cylinder 303. The air outlet of the cylinder 303 is connected to the air inlet of the first jet pipe 307 through a connecting air pipe 306. A first electric valve is installed at the liquid inlet of the conveying pipe 101 and the material outlet of the slag discharge pipe 102.

[0033] When the filter cartridge 2 rotates rapidly, the limiting roller 302, being an eccentric wheel, will periodically displace as the filter cartridge 2 rotates, driving the support rod 3 to reciprocate. This, in turn, pushes the piston block 304 to slide back and forth within the air cylinder 303. In conjunction with the tension spring 305 and the one-way valve, the air cylinder 303 can periodically inhale and exhale. Air is supplied to the first jet pipe 307 via the connecting air pipe 306. The first jet head 308 on the first jet pipe 307 sprays air into the filter holes of the filter cartridge 2. On one hand, this reverses the blowing action on the filter holes of the filter cartridge 2, preventing blockage and ensuring smooth separation of the liquid from the filter cartridge 2. On the other hand, the airflow generated by the jet will... A dynamic airflow field is formed in the area below the inner filter cartridge 2. When the liquid that has been initially filtered by the filter cartridge 2 falls to the ultrafiltration screen 105, the airflow disturbance above the ultrafiltration screen 105 caused by the jet will create a pressure difference with the relatively stable area below. This pressure difference is equivalent to providing a boost to the liquid passing through the filter screen, allowing the liquid mixed with microbial strains to pass through the ultrafiltration screen 105 more efficiently and quickly. This reduces the resistance and time of liquid residence and penetration on the surface of the ultrafiltration screen 105, improves the overall efficiency of solid-liquid separation, and ensures that sufficient and pure bacterial liquid can be quickly obtained for strain screening, thus helping to promote the efficient progress of microbial screening work at the environmental remediation site.

[0034] Example 5: Refer to Figures 1-6 A portable device for on-site screening of environmental remediation microbial strains is basically the same as that in Example 4. Furthermore, the limiting rollers 302 on the two supports 301 are staggered to allow the two air cylinders 303 to alternately supply air into the first air pipe 307.

[0035] During the rotation of the filter cartridge 2, because the limiting roller 302 is an eccentric wheel and the two limiting rollers 302 are staggered, the corresponding support rod 3 will be driven to produce asynchronous reciprocating motion. This causes the sliding of the two connected piston blocks 304 in their respective air cylinders 303 to be asynchronous, achieving alternating movement. That is, when one air cylinder 303 is drawing air, the other air cylinder 303 is venting air. This cycle allows the first jet pipe 307 to continuously obtain airflow and continuously spray air into the filter holes of the filter cartridge 2. The continuous air supply ensures the continuity of reverse purging of the filter holes of the filter cartridge 2 and also stably maintains the pressure difference between the upper and lower parts of the ultrafiltration screen 105. This ensures that the liquid containing microbial strains always passes through the filter screen efficiently, improving the efficiency and stability of solid-liquid separation and continuously providing high-quality bacterial liquid for subsequent microbial screening.

[0036] Example 6: Refer to Figures 1-6 A portable device for on-site screening of environmental remediation microbial strains is basically the same as in Example 4, but with a further improvement: a pressure detector 109 is fixedly installed on the tank 1 above the ultrafiltration screen 105, and an exhaust pipe 4 is fixedly connected to the tank 1 above the ultrafiltration screen 105. A second electric valve is installed at the air inlet of the exhaust pipe 4. The combined design of the pressure detector 109 and the exhaust pipe 4 on the tank 1 provides a reliable air pressure safety guarantee mechanism for the operation of the device. During the solid-liquid separation process, as liquid and impurities continuously fall onto the ultrafiltration screen 105, impurity accumulation or poor liquid permeation may cause damage to the ultrafiltration screen. As the air pressure above the ultrafiltration screen 105 gradually increases, the pressure detector 109 can monitor the air pressure changes in real time and accurately. Once the air pressure exceeds the rated value, an alarm is triggered. At the same time, the control system will automatically open the second electric valve at the air inlet of the exhaust pipe 4 to quickly discharge the excess gas above the ultrafiltration screen 105 and relieve pressure in time. This design effectively avoids the risk of liquid penetration being blocked, the ultrafiltration screen 105 becoming more clogged, or even the internal pressure imbalance of the device due to excessive air pressure. It not only protects the normal operation of the ultrafiltration screen 105, but also ensures the safety and stability of the overall device operation, allowing the solid-liquid separation process to always be carried out in a safe and efficient state.

[0037] A second jet pipe 402 is installed inside the tank 1, below the ultrafiltration screen 105. Multiple sets of second jet heads 403 are symmetrically connected to the second jet pipe 402, with the jet heads of the second jet heads 403 facing the ultrafiltration screen 105. The outlet end of the exhaust pipe 4 extends into the tank 1 and connects to the inlet of the second jet pipe 402. This linkage design between the second jet pipe 402 and the exhaust pipe 4 inside the tank 1 achieves efficient utilization of gas resources and intelligent maintenance of the ultrafiltration screen 105. When the pressure detector 109 detects that the gas pressure above the ultrafiltration screen 105 exceeds the standard, the second electric valve opens. The gas discharged from the exhaust pipe 4 is not released directly, but is instead introduced into the second jet pipe 402 located below the ultrafiltration screen 105. 2. Through the symmetrically distributed second jet heads 403, these exhaust gases perform reverse purging of the ultrafiltration screen 105 in a directional airflow. On the one hand, the reverse airflow can effectively remove impurities and residual liquids attached to the lower surface of the ultrafiltration screen 105, prevent the micropores of the screen from being blocked, and maintain its permeability. On the other hand, combined with the forward jetting of the first jet pipe 307 onto the filter cartridge 2, a bidirectional pressure difference of pushing up and blowing down is formed, which further accelerates the speed at which liquid containing microorganisms penetrates the screen, significantly improving the solid-liquid separation efficiency. This design, which converts depressurized gas into clean power, reduces energy waste and achieves dynamic self-cleaning of the ultrafiltration screen 105, ensuring long-term stable operation of the device and reducing manual maintenance costs.

[0038] The two sets of second jet heads 403 on the second jet pipe 402 are symmetrically staggered. The second jet heads 403 are inclinedly mounted on the second jet pipe 402. The second jet pipe 402 and the exhaust pipe 4 are rotatably connected via a rotary joint 401. The symmetrical staggered and inclined distribution of the two sets of second jet heads 403 can prevent airflow overlap and the formation of blind spots during backflushing, ensuring that every area of ​​the ultrafiltration screen 105 is covered by airflow and eliminating cleaning dead zones. The inclined mounting of the second jet heads 403 allows the ejected airflow to impact the filter surface at a certain angle, enhancing the flushing force of the airflow on impurities and making it easier to remove stubborn residues. At the same time, the second jet head 403... The air pipe 402 and the exhaust pipe 4 are rotatably connected through the rotary joint 401. Under the pressure generated by the gas flow, the second jet pipe 402 can continuously rotate around the rotary joint 401. This makes the purging range of the second jet head 403 no longer limited to a fixed position, but achieves all-round, no-dead-angle backflushing of the surface of the ultrafiltration screen 105 through dynamic rotation. The staggered distribution of the two sets of jet heads combined with the rotation of the jet pipes ensures that every part of the ultrafiltration screen 105 can be evenly purged, avoiding local over- or under-cleaning, significantly improving the backflushing cleaning efficiency and screen cleanliness, and ensuring the efficient and stable operation of the solid-liquid separation process.

[0039] Example 7: Refer to Figures 1-6A portable device for on-site screening of environmental remediation microbial strains is basically the same as that in Example 6. Furthermore, the lower end of the interior of the tank 1 is provided with an inclined guide surface, which gradually slopes downward toward the side facing the discharge pipe 103.

[0040] The inclined guide surface design at the lower end of the tank 1, based on the actual needs of fluid mechanics and solid-liquid separation, significantly optimizes the performance of the device. The inclined guide surface gradually slopes downward toward the discharge pipe 103. During the solid-liquid separation process, the liquid containing microbial strains filtered by the ultrafiltration screen 105 will naturally and quickly converge and flow toward the discharge pipe 103 along the guide surface due to gravity, avoiding liquid residue or accumulation at the bottom of the tank 1, reducing liquid residence time, accelerating discharge speed, improving the overall efficiency of solid-liquid separation, achieving efficient liquid output through natural guidance, reducing energy consumption, and enhancing the practicality and reliability of the device in environmental remediation field operations.

[0041] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention.

Claims

1. A portable device for on-site screening of environmental remediation microbial strains, comprising a container (1), characterized in that, The tank (1) is a high-strength, lightweight aluminum alloy tank, and also includes: a filter cartridge (2) disposed inside the tank (1); a drive motor (201) fixedly connected to the upper end of the tank (1); a drive shaft (202) fixedly connected to the output end of the drive motor (201), the lower end of the drive shaft (202) extending downward into the interior of the filter cartridge (2) and fixedly connected to the lower end of the interior of the filter cartridge (2); a conveying pipe (101) fixedly connected to one side of the upper end of the tank (1), the outlet of the conveying pipe (101) being located inside the tank (1) and facing the interior of the filter cartridge (2); and a slag discharge pipe (102) fixedly connected to the tank (1). On one side of the upper end, the slag discharge port of the slag discharge pipe (102) extends downward to the lower end of the filter cylinder (2); a discharge pipe (103) is connected to the lower end of one side of the tank (1); a moving roller (106) is symmetrically installed on the lower end of one side of the tank (1); a handle (108) is fixedly connected to the upper end of the tank (1) on the side of the moving roller (106); a support block (107) is fixedly connected to the lower end of the tank (1) away from the moving roller (106); an insertion interface is opened horizontally below the filter cylinder (2) of the tank (1); a fixed frame (104) is inserted into the insertion interface; and an ultrafiltration screen (105) is fixedly connected inside the fixed frame (104).

2. The portable device for on-site screening of environmental remediation microbial strains according to claim 1, characterized in that, The ultrafiltration mesh (105) is a microporous stainless steel mesh, and the ultrafiltration mesh (105) has an upwardly convex arc design.

3. The portable device for on-site screening of environmental remediation microbial strains according to claim 1, characterized in that, Two support rods (3) are symmetrically installed on both sides of the tank (1) near the filter cylinder (2). A support (301) is fixedly connected to one end of the support rod (3) near the filter cylinder (2). A limiting roller (302) is rotatably connected to the support (301). The limiting roller (302) rolls against the filter cylinder (2).

4. The portable device for on-site screening of environmental remediation microbial strains according to claim 3, characterized in that, The first jet pipe (307) is fixedly connected to the tank (1) near the filter cylinder (2) by a support rod. The first jet pipe (307) is located below the limiting roller (302). Multiple first jet heads (308) are equidistantly connected to the side of the first jet pipe (307) near the filter cylinder (2). The jet nozzles of the first jet heads (308) face the filter holes of the filter cylinder (2).

5. The portable device for on-site screening of environmental remediation microbial strains according to claim 4, characterized in that, An air cylinder (303) is horizontally fixedly connected to the tank body (1) near the support rod (3). A piston block (304) is slidably connected inside the air cylinder (303). A tension spring (305) is installed inside the air cylinder (303). The two ends of the tension spring (305) are fixedly connected to the air cylinder (303) and the piston block (304) respectively. One end of the support rod (3) away from the support (301) extends into the air cylinder (303) and is connected to the piston block. (304) Fixed connection, the limiting roller (302) is an eccentric wheel, the air cylinder (303) is provided with an air inlet and an air outlet, a one-way valve is installed in the air inlet and the air outlet of the air cylinder (303), the air outlet of the air cylinder (303) is connected to the air inlet of the first jet pipe (307) through a connecting air pipe (306), and a first electric valve is installed at the liquid inlet of the conveying pipe (101) and the material outlet of the slag discharge pipe (102).

6. The portable device for on-site screening of environmental remediation microbial strains according to claim 5, characterized in that, The limiting rollers (302) on the two supports (301) are staggered to allow the two air cylinders (303) to alternately supply air into the first jet pipe (307).

7. The portable device for on-site screening of environmental remediation microbial strains according to claim 5, characterized in that, A pressure detector (109) is fixedly installed on the tank (1) above the ultrafiltration screen (105). An exhaust pipe (4) is fixedly connected to the tank (1) above the ultrafiltration screen (105). A second electric valve is installed at the air inlet of the exhaust pipe (4).

8. The portable device for on-site screening of environmental remediation microbial strains according to claim 7, characterized in that, A second jet pipe (402) is provided inside the tank (1) below the ultrafiltration screen (105). Multiple sets of second jet heads (403) are symmetrically connected to the second jet pipe (402). The jet heads of the second jet heads (403) face the ultrafiltration screen (105). The exhaust end of the exhaust pipe (4) extends into the tank (1) and is connected to the air inlet of the second jet pipe (402).

9. A portable device for on-site screening of environmental remediation microbial strains according to claim 8, characterized in that, The two sets of second jet heads (403) on the second jet pipe (402) are symmetrically and alternately distributed. The second jet head (403) is inclinedly disposed on the second jet pipe (402). The second jet pipe (402) and the exhaust pipe (4) are rotatably connected through a rotary joint (401).

10. A portable device for on-site screening of environmental remediation microbial strains according to claim 1, characterized in that... The lower interior of the tank (1) is provided with an inclined guide surface, which gradually slopes downward toward the side of the discharge pipe (103).

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