40 results about "Cloth filter" patented technology

The utility model relates to the technical field of water pollution treatment, in particular to a landscape water dialysis purification system. The system comprises a water intake pumping station, a water distribution well and a cloth filter tank, water taken by the water intake pumping station is conveyed into the water distribution well through a water inlet pipe of the water distribution well, the water inlet pipe of the water distribution well is connected with PAC and PAM pipelines, sewage is distributed into the cloth filter after being subjected to first flocculation and sedimentation in the water distribution well, PAM is added into a water outlet pipe of the water distribution well, pollutants in water are further subjected to flocculation and sedimentation in a flocculation and sedimentation section of the cloth filter, and the pollutants in the water are subjected to secondary flocculation and sedimentation. The sewage is filtered by the fiber rotary disc filter after two times of flocculating settling, and the filtered clear water can be discharged, so that the sewage is treated, the load of the fiber rotary disc filter is effectively reduced in the process, and the efficient treatment process of the sewage is ensured; sludge generated in the operation process of the system is collected and then filtered, so that the sludge produced by the system is treated.

The invention discloses a preparation method and application of a hydrophobic air filtering material based on lignin modification, and belongs to the technical field of personal protective articles. According to the method, environment-friendly lignin and a silane coupling agent are subjected to a pre-grafting reaction to prepare a functionalized impregnation liquid, a mask melt-blown cloth filter material is modified, and the modified mask melt-blown cloth filter material serves as a long-acting hydrophobic mask filter material to prepare a mask. According to the invention, a firm hydrophobic network is constructed on the surface of the fiber by utilizing the'molecular bridge 'effect of silane. The modified filter material prevents the filter efficiency from being reduced due to moisture, and meanwhile, the coating is resistant to airflow scouring through chemical bonding, so that the protective life of the mask is prolonged. Compared with a reported modification method, the preparation method disclosed by the invention has the comprehensive advantages of environmental friendliness, low cost and lasting performance.

The invention discloses a full-automatic online adsorption and desorption integrated device for organic waste gas, and belongs to the technical field of waste gas pollution treatment. A full-automatic online adsorption and desorption integrated device for organic waste gas comprises a powdery molecular sieve fluidized bed, a plurality of cloth cylinder filters are arranged in the powdery molecular sieve fluidized bed, a lifting ring capable of vertically moving up and down is arranged on the surface of any cloth cylinder filter, an inner ring is arranged in the lifting ring, and a sealing groove is formed in the inner wall of the inner ring. A sealing seat matched with the sealing groove is connected into the sealing groove in a sealed mode and fixedly connected with the lifting ring. Compared with a traditional fixed bed activated carbon adsorption device, the full-automatic online adsorption and desorption integrated device for the organic waste gas has the advantages that powder layers are formed on the surfaces of a plurality of cloth cylinder filters to perform adsorption treatment on the waste gas, so that the adsorption area of the powder layers on the waste gas is increased, and the treatment efficiency of the powder molecular sieve layer on the waste gas is further improved.

The invention provides a rural domestic sewage treatment system of an enhanced biological filter, which sequentially comprises a pretreatment unit, a biological filter unit, a biological filter unit and a sewage treatment unit along the water flow direction, and the pretreatment unit comprises a grating, a regulating tank and a hydrolysis acidification tank; the core biological treatment unit is communicated with a water outlet of the pretreatment unit, and the core biological treatment unit is formed by connecting a multi-stage anaerobic biological filter and a baffling type micro-aeration biological filter in series; and the deep treatment unit is communicated with the water outlet of the core biological treatment unit and comprises an inclined plate sedimentation tank and a cloth filter tank. The invention aims to overcome the defects of the existing rural domestic sewage treatment technology, particularly a centralized treatment technology, in the aspects of coping with complex water quality and cold climate, decentralized management, cost control and the like. The enhanced biological filter sewage treatment system and the enhanced biological filter sewage treatment method provided by the invention can stably operate under various terrain and climate conditions (especially in high and cold areas and high altitude areas), and are high in treatment efficiency and low in construction and operation cost.

The utility model discloses a kind of short-process underground coal mine wastewater treatment systems, including regulating pool, regulating pool lift pump, magnetic coagulation sedimentation system, filter cloth filter system, clean water pool, reuse pump, regulating pool is arranged export connection regulating pool lift pump, the export of regulating pool lift pump is connected with the inlet of magnetic coagulation sedimentation system, the export of magnetic coagulation sedimentation system is connected with the inlet of filter cloth filter system, the export of filter cloth filter system is connected with the inlet of clean water pool, clean water pool outlet water is lifted to water point by reuse pump, the sludge outlet of magnetic coagulation sedimentation system is connected with the inlet of sludge pool, the export of sludge pool is connected with the inlet of sludge pump, the export of sludge pump is connected with the inlet of plate-and-frame filter press, compared with traditional mine water treatment system, the combination mode of magnetic coagulation sedimentation system and filter cloth filter system has the characteristics of short process, small footprint, low energy consumption.

The present invention relates to a water treatment system for pile fabric filtration, comprising at least one suction slot for backwashing, and a pile fabric filter having pile fibers fastened to a pile fabric support structure, wherein the pile fabric support structure has open, flow-relevant pores. According to the invention, the ratio of the slot area per suction bar to the area of the flow-relevant pores of the pile fabric support structure in the slot area per suction bar is between 1.1 and 9.5, preferably between 1.25 and 9, more preferably between 1.5 and 8.5, even more preferably between 2 and 8, even more preferably between 2.25 and 7.5, and particularly preferably between 2.5 and 7.

The utility model relates to the technical field of pulse bag-type dust collectors, in particular to a dust collecting device for a pulse bag-type dust collector, which comprises a dust hopper, the bottom end of the dust hopper is fixedly connected with a bottom cylinder, and a blanking mechanism is arranged below the bottom cylinder; push plates are arranged on the two sides of the ash bucket, and the upper ends of the push plates penetrate through the ash bucket and are movably arranged outside the ash bucket; driving mechanisms are arranged outside the two sides of the ash bucket and close to the lower part of the push plate, and an aeration mechanism is arranged in the middle of the front surface of the ash bucket. According to the utility model, the vibration is controlled through compressed air, so that overlarge noise generated by mechanical knocking is avoided, and the device is very beneficial to working environments with strict requirements on noise, such as dust collecting devices in factories near residential areas or laboratory environments sensitive to noise.

The invention relates to the technical field of water treatment, and discloses a high-efficiency cloth filter tank, which comprises a filter tank body, one side of which is provided with a water inlet; a plurality of filtering devices are arranged in the filtering tank body at equal intervals, and the two ends of the filtering devices are detachably connected with the filtering tank body through flange mounting plates respectively; the cleaning device comprises a cleaning body and a scraping plate, one side end of the scraping plate is propped against the peripheral side wall of the filtering equipment, and the other side end of the scraping plate is communicated with the cleaning body; the control device comprises a flow sensor arranged at the water inlet, a first sensor, a second sensor and a control unit, and the control unit adjusts the cleaning frequency and sends out alarm information according to data of the flow meter; a plurality of filtering devices are detachably connected through the flange mounting disc and can be independently maintained without emptying the filter tank, and the cleaning device timely cleans dirt through the scraper to reduce blockage; the control device dynamically adjusts the cleaning frequency according to the flow, the sensor monitors the water passing efficiency and the sludge concentration, and the overall operation stability, efficiency and convenience are improved.

The invention discloses a rapid filtering device for traditional Chinese medicine syrup in the technical field of medicament filtration, the rapid filtering device comprises a shell and filter cloth arranged in the shell through a clamping mechanism, the filter cloth is used for filtering syrup, the filter cloth is cylindrical, and a top cloth assembly for switching the filter surface of the filter cloth is further arranged in the shell; the clamping mechanism can adjust the height of the horizontal section of the filter cloth at the joint with the clamping mechanism, and is matched with the cloth jacking assembly to adjust the filtering part of the filter cloth; according to the invention, the filter cloth forming the recess is continuously changed, so that the filter cloth for filtering work is continuously updated, the filter cloth participating in the filtering work leaves the filtering part in a manner of continuously moving upwards or being rolled, and the filtered impurities can leave the filtering part along with the filter cloth in combination with the characteristic that the impurities are easy to adhere to the filter cloth due to high viscosity of syrup; the filtering assembly can efficiently filter syrup, the risk of interactive pollution inside and outside the shell is avoided, meanwhile, the filtering continuity is improved, and the filtering efficiency is further improved.

The utility model relates to the technical field of sewage treatment, in particular to a cloth filter scum collecting device which comprises a fixed frame, a retaining wall is arranged on one side of the fixed frame, movable rods are mounted on the fixed frame and symmetrically distributed, and a first buoy and a second buoy are mounted at the bottom ends of the movable rods on the two sides respectively. The bottom ends of the first float bowl and the second float bowl are connected through a connecting frame, a scum collecting channel is arranged between the first float bowl and the second float bowl, a drain outlet is formed in the middle of the scum collecting channel, the collecting box is located on the fixed box, and a height adjusting assembly is arranged in the fixed box. According to the cloth filter, the device ascends and descends according to the water level and the water quantity by virtue of the buoyancy of the first float bowl and the second float bowl on the two sides, so that the device always sucks away scum on the water surface, and reclaimed water with scum on the upper surface is sucked into a scum collecting channel from a square opening; and the device is connected into the sewage area in the collecting box through the sewage outlet and the sewage discharge pipe at the bottom end, so that the effects of cleaning the scum and ensuring the cleanness and the water permeability of the cloth filter are achieved.

The utility model discloses a vibration pressure ultrafiltration automatic solid-liquid separation system which comprises an extrusion dehydration device, the extrusion dehydration device comprises a barrel, the bottom of the barrel is conical, a discharge port is formed in the bottom of the barrel, a discharge valve is arranged at the discharge port, a filter bag is arranged in the barrel, and the filter bag is connected with the extrusion dehydration device. The shape of the filter bag is attached to the inner wall of the barrel, openings are formed in the top and the bottom of the filter bag, an extrusion plate is connected to the opening in the top of the filter bag, an opening in the bottom of the filter bag is connected with a discharging port, a lifting extrusion mechanism is connected to the top of the extrusion plate, a feeding port is formed in the extrusion plate, and the lifting extrusion mechanism is connected with a discharging port. According to the utility model, a horizontal linear vibration screening technology and a membrane cloth filter pressing technology are combined, the aperture of meshes in the existing separation and extrusion technology is reduced from about 150 microns to below 40 microns, large deformable solids are prevented from being extruded back into liquid again in a spiral extrusion dehydration process, and the separation efficiency is ensured.

The utility model discloses a glass fiber cloth filter material film covering device, which relates to the technical field of filter material film covering equipment, and comprises a conveying frame, the inner side wall of the conveying frame is rotatably connected with a conveying roller, and through the arrangement of a clamping block and a pressing plate, when the glass fiber cloth filter material is produced and processed by the film covering device, the glass fiber cloth filter material can be conveyed to the conveying roller through the clamping block. In order to improve the convenience of disassembly, assembly and cleaning under long-time dustproof use of the dustproof plate on the side edge of the glass fabric filter material and the convenience of press fit of the glass fabric filter material during conveying and laminating, a pull block can be pulled to drive a sliding rod to slide along the outer wall of a mounting box through connection of a spring, and a clamping block and an inserting rod are not in contact; according to the dust-proof device, the dust-proof plate is arranged in the mounting box, the inserting rod is pulled out of the mounting box, meanwhile, the dust-proof plate is pulled out of the inserting groove, the dust-proof plate is conveniently disassembled, assembled and cleaned, and when the dust-proof plate is used daily, a micro servo motor can be started to drive a pressing plate to slide along the inner wall of a fixing groove through rotation of a threaded rod, so that the effect of improving stable film covering of a glass fabric filter material is achieved.

The utility model relates to the technical field of integrated cloth filter tanks, and discloses an integrated cloth filter tank, which solves the problems in the background technology, and comprises a filter tank main body, the top of the filter tank main body is rotatably connected with two upper covers, and the two upper covers are respectively positioned on the front side and the rear side of the top of the filter tank main body; a water inlet is further formed in the top of the upper cover, two second supporting plates are fixedly connected to the bottom of an inner cavity of the filter tank body, supporting frames are fixedly connected to the tops of the two second supporting plates, second rotating shafts are rotationally connected to the two supporting frames, and filter cloth plates are connected to the circumferential surfaces of the second rotating shafts in a sleeving mode. The sewage treatment device has the advantages that metal filings in sewage can be filtered, so that the effect of protecting the filter cloth is achieved, and adhered objects on the filter cloth can be automatically cleaned, so that the effects of preventing the adhered objects from blocking the filter cloth and avoiding reducing the filtering efficiency are achieved.

The embodiment of the utility model provides a filtering device, which is used for a desalting water system of a granulator and comprises a box body, the water segregator is mounted in the box body; the non-woven fabric filter is mounted in the box body and is positioned below the water segregator; the metal filter is positioned between the water segregator and the non-woven fabric filter; the metal filter is provided with a metal frame and at least one filter layer, the metal frame is detachably connected with the box body, the filter layer is fixed in the metal frame, and the filter layer is used for filtering impurities in demineralized water; and the distance between the metal filter and the water segregator is smaller than or equal to the distance between the metal filter and the non-woven fabric filter. According to the embodiment of the invention, the problem that the non-woven fabric can be broken through by powdery precipitates in demineralized water can be improved.

The utility model relates to the technical field of integrated extraction of tea leaves, in particular to an integrated extraction device for tea leaves, which comprises a mixing box, a mounting frame and a feeding and mixing assembly, a liquid inlet pipe is arranged on the inner side of the mixing box; a feeding box is arranged on one side of the mixing box; a feeding mixing assembly is arranged on one side of the mixing box; a mounting frame is arranged on one side of the liquid outlet pipe; a first rotating rod is arranged at the output end of the first driving motor, a mounting box is arranged on one side of the first rotating rod, and a first rotating pipe is arranged on one side of the mounting box; according to the device, tea residues are rapidly discharged in a rapid discharging mode, and the purpose of rapid cleaning can be achieved, so that the problems that the working time is prolonged, the extraction efficiency is reduced and the practicability is relatively low due to the fact that the tea residues still remain inside and are inconvenient to clean after most of the screen cloth filters an extracting solution are solved.

To regenerate water used in a water jet method into water equivalent to first class industrial water.SOLUTION: The method for treating the used water of the water jet includes a separation step of separating the used water into supernatant water and a flocculate and a step of dehydrating the flocculate to discharge the flocculate as a dehydrated cake. A dehydration step of returning filtered water to supernatant water, a first neutralization step of adding an acid to the supernatant water to neutralize the supernatant water, a first filter passing step of passing the supernatant water through a first filter (palm fiber filter) capable of adsorbing flocs, a second filter passing step of passing the supernatant water through a second filter (cloth filter) capable of rough filtration, an organic matter removing filter passing step of circulating the supernatant water through an organic matter removing filter (activated carbon filter) capable of removing organic matter, and a second neutralization step of adding carbon dioxide gas to neutralize the supernatant water; And a third filter passing step of passing through a third filter (hollow fiber filter) capable of microfiltration.SELECTED DRAWING: Figure 1

The application discloses a kind of textile printing and dyeing wastewater pollution treatment filter cloth filter equipment and its filtering method, it is related to printing and dyeing wastewater pollution treatment technical field, including wastewater pollution treatment filter, the top edge of one side of wastewater pollution treatment filter is fixedly installed with horizontal sliding table, the top side of horizontal sliding table is fixedly installed with sliding control box, the side of sliding control box is fixedly installed with power box.Add by adding the sewage that needs to be treated and chemical treatment agent in wastewater pollution treatment filter, also, add a certain proportion of flocculating agent, the rotation of transmission screw rod is controlled by sliding control box, the horizontal sliding of horizontal sliding disc on horizontal sliding rail is realized, the overall sliding operation of stirring arm is directly driven by the sliding of horizontal sliding disc, stirring rod in different positions is used for stirring operation in wastewater pollution treatment filter, the inclination angle of stirring rod can be adjusted by side rotary shaft, and then stirring angle is directly controlled.

The invention provides hollow fiber composite membrane cloth and a preparation method, and relates to the technical field of fiber materials, the hollow fiber composite membrane cloth comprises a functional substrate layer, a hollow fiber membrane cloth layer and an interface treatment layer located between the functional substrate layer and the hollow fiber membrane cloth layer, the interface treatment layer is used for treating the contact surface between the functional substrate layer and the hollow fiber membrane cloth layer by adopting a physical method or a chemical method so as to enhance the binding force of the functional substrate layer and the hollow fiber membrane cloth layer and form a two-dimensional planar membrane cloth. In particular to a three-dimensional composite membrane cloth filter which is formed by compounding hollow fiber cloth with substrates with different functions to form two-dimensional planar membrane cloth, realizing multi-scene adaptation such as antibiosis and anti-static electricity through substrate functionalization and then winding, weaving and packaging, and is suitable for scenes such as bioreactors, water treatment and gas separation. High permeability, pollution resistance and structural stability are shown.

The utility model relates to the technical field of cloth filter tanks, in particular to a combined landscape water treatment device. The cloth filter comprises a first tank body, a second tank body and a third tank body which are sequentially arranged from inside to outside, a first area is formed between the first tank body and the second tank body, a second area is formed between the second tank body and the third tank body, and fiber rotary disc filters are uniformly distributed in the second area. A third area is formed between every two adjacent fiber rotary disc filters, and sewage inlet water is directly introduced into the first tank body, then is distributed to the third area, is dispersed from inside to outside in the third area, is filtered by the fiber rotary disc filters and then is introduced into the first area. The combined landscape water treatment device disclosed by the utility model has the advantages that under the same treatment load, the occupied area is minimum, meanwhile, pollutants in sewage can be pre-precipitated, the treatment load of the fiber rotary disc filter can be effectively reduced, and the stable and efficient operation of the cloth filter is facilitated.

The utility model discloses a filter cloth installation mechanism and a filter cloth filter press thereof, and relates to the technical field of filter presses, the filter cloth installation mechanism comprises a frame plate, an installation rod is arranged in the frame plate, and the installation rod is used for supporting filter paper; sliding grooves are formed in the inner walls of the first moving blocks and the frame plates, the first moving blocks are interactively connected to the inner walls of the sliding grooves, first deep grooves are formed in the outer walls of the first moving blocks, second moving blocks are slidably connected to the inner walls of the first deep grooves, the mounting rods are fixedly connected to the middles of the outer walls of the second moving blocks, and elastic assemblies are arranged between the second moving blocks and the first deep grooves; and the lifting driving mechanism is arranged in the sliding groove, and the lifting driving mechanism is used for driving the second moving block to move. According to the utility model, the filter cloth is sleeved on the plurality of mounting rods, the elastic assembly is used for stretching the filter cloth left and right, then the lifting driving mechanism is started, the lifting driving mechanism drives the first moving block to move and stretches the filter cloth up and down, unevenness such as wrinkles of the filter cloth is avoided, and the filtering effect of the filter cloth is ensured.

The utility model discloses a filter effect inspection tool for filter cloth production, and relates to the technical field of filter cloth filter effect inspection, the filter effect inspection tool comprises a support assembly, a detection assembly and a fixing assembly, the support assembly comprises a housing and a fixing cylinder, the fixing cylinder is fixedly installed in the housing, the detection assembly is arranged in the support assembly, and the fixing cylinder is fixedly installed in the housing. The detection assembly comprises a motor and a stirring shaft, the stirring shaft is fixedly installed at one end of the motor, the fixing assembly is arranged in the supporting assembly and comprises a movable plate and a second spring, and the second spring is fixedly installed at the bottom of the movable plate. Under the combined action of the movable plate and the movable cylinder, the filter cloth is placed on the movable plate, the movable cylinder is driven by the air cylinder to move downwards, the bottom of the movable cylinder makes contact with the top of the movable plate, the filter cloth is clamped, the movable plate is squeezed downwards, the filter cloth makes contact with the top of the lower connecting cylinder, the filter cloth is tensioned, and the filter cloth is prevented from being wrinkled to affect the detection effect.

The invention provides a retaining wall inverted filter structure and a construction method thereof, and belongs to the field of building construction. According to the technical scheme, the retaining wall comprises a retaining wall body, an inverted filter body, a drainage pipeline, aerated water-permeable concrete blocks, backfill soil, an intercepting ditch and a drainage ditch, the inverted filter body is arranged on the retaining side of the retaining wall body, a plurality of water seepage pipes are arranged in the inverted filter body, and the aerated water-permeable concrete blocks are arranged on the outer side of the inverted filter body; backfill soil is arranged on the outer sides of the aerated water-permeable concrete blocks, and the lower ends of the water seepage pipes communicate with a drainage pipeline of the retaining wall body. The retaining wall has the beneficial effects that the inverted filter layer is arranged on the soil retaining side of the retaining wall body, and inverted filter drainage is achieved through the anti-crack leveling, waterproof material and polyurethane mortar interface in combination with the inner geotechnical cloth filter layer, the outer geotechnical cloth filter layer and the three-dimensional drainage pad; rainwater is guided and drained through the intercepting ditch, the water seepage pipe, the drainage pipeline and the drainage ditch, high-pressure cleaning of the detachable filter screen and a water level alarm are matched, and drainage and maintainability are improved.

Exemplary embodiments of a filter cartridge for a coffee machine are disclosed. According to one exemplary embodiment, a coffee machine filter cartridge may include a filter body having a water inlet, a grate and a water outlet, and a lid held on the filter body. The water inlet is disposed around the water outlet. The water outlet connects to one end of the grate through a pipe. The other end of the grate is held on the inner wall of the filter body and comprises a cloth filter. A filter chamber between the pipe and the filter body has a descaling core. When filtering and descaling, the water flows sequentially through the water inlet, filter chamber, grate, cloth filter, pipe, and water outlet. The cartridge is structurally simple, convenient and accessible to users; preventing clogging of the internal parts of the coffee machine by slow dissolution of the descaling agent.

The invention discloses air purifier equipment, and relates to the technical field of air purification, the air purifier equipment comprises a shell, clamping mechanisms are arranged at the bottom ends of the inner walls of the left side and the right side of the shell, a water tank is clamped by the inner walls of the clamping mechanisms, and a funnel vertically penetrates through one side of the top of the water tank; a filter element is vertically clamped in the middle of the top of the water tank, and a screen cloth mechanism is arranged outside the filter element; an air draft mechanism is arranged on the inner wall of the front side, above the filter element, of the shell; a connecting plug is arranged on the front side of the bottom end of the shell; and air inlets are formed in the lower ends of the outer walls of the left and right sides of the shell. According to the air purifier equipment, an electric heating ring in a filter element can dry the air purifier equipment to prevent mould breeding, a vibration motor assists pollutants in falling off and draining off mesh cloth, in a mesh cloth mechanism, first mesh cloth filters particulate matter and humidifies the particulate matter, and a three-layer structure of second mesh cloth increases the contact area; the purifying agent and pollutants such as formaldehyde are fully complexed and converted into solid salt and water, and efficient purification and humidification are achieved through cooperation of the two.

The utility model relates to the technical field of air purification, and discloses a double-effect carbon cloth clamping filtering device which comprises a filtering cavity and a multi-layer composite structure, an air inlet is formed in the top of the filtering cavity, an air outlet is formed in the bottom of the filtering cavity, a round bone net barrel is arranged in the filtering cavity, a supporting column is arranged in the middle of the round bone net barrel, and a plurality of air outlets are formed in the middle of the supporting column. The top ends and the bottom ends of the supporting columns are integrally connected to the top and the bottom of the circular bone net barrel respectively to form a stable structure, and supporting frameworks are arranged in the circular bone net barrel at equal intervals and tightly attached to the circular bone net barrel. Through the design of the multi-layer composite structure and the carbon clamping cloth layer arranged in the multi-layer composite structure, acid gas and VOCs are efficiently removed, the overall purification effect is improved, through the synergistic effect of the pre-filtering layer and the electrostatic adsorption layer, large particles are effectively intercepted, tiny particles are thoroughly removed, it is ensured that pollutants in air are comprehensively purified, and the air purification effect is improved. And freshness and health of indoor air are guaranteed.

The utility model relates to a cloth bag falling prevention structure of a pulse bag-type dust collector, which belongs to the technical field of dust collectors and comprises a stabilizing ring, a support is fixed at the bottom of the stabilizing ring, the inner side of the support and the stabilizing ring are coaxial and flush with each other, and a clamping component for improving the connection stability of a cloth bag is arranged at the bottom of the stabilizing ring. A dustproof bag is fixed to the bottom of the clamping assembly and located on the outer side of the support, and a stabilizing assembly for improving the connection stability between the dustproof bag and the support is arranged on the outer surface of the dustproof bag. According to the cloth bag falling prevention structure of the pulse bag-type dust collector, stable connection of a dustproof bag can be guaranteed through the matching relation between the clamping assembly and the stabilizing ring, meanwhile, when disassembly or replacement is needed, only the two positioning blocks need to be shifted, the two clamping blocks need to be pressed, and then the stabilizing seat is rotated, the structure is very convenient to disassemble and assemble, connection is reliable, and the practicability is high. A good anti-falling effect can be achieved, the support can also provide good supporting performance for the dustproof bag, and the filtering effect is guaranteed.

The invention provides a silver / dimethyl imidazole cobalt / carbon cloth filter membrane with SERS (Surface Enhanced Raman Scattering) activity as well as a preparation method and application of the silver / dimethyl imidazole cobalt / carbon cloth filter membrane. The silver / dimethyl imidazole cobalt / carbon cloth filter membrane is composed of a ZIF-67 / C nano flower thorn structure formed by loading nano flower thorn-shaped ZIF-67 on carbon cloth and Ag NPs grown on the ZIF-67 / C nano flower thorn structure. The PS microspheres can be rapidly adsorbed, and the PS microspheres in the environment can be removed. According to the present invention, the SERS effect is maximally enhanced due to the rich hot spots, the SERS fingerprint information of the PS molecule can be obtained during the detection, the intensity change of the fingerprint information can be used for accurately analyzing the PS microsphere content, and the fingerprint information provides the important effect for the indirect quantification of the PS microsphere content in the system. The method is high in detection sensitivity, is not influenced by water in a system, does not need sample pretreatment, and can overcome the limitation problems of low detection efficiency and the like caused by complex operation steps, complex sample pretreatment and sample damage in a traditional PS microsphere detection method.

The utility model relates to a van-type plate-and-frame filter press and an urban water plant sludge dewatering and filter pressing system, the van-type plate-and-frame filter press comprises a filter press body, a plurality of van-type filter plates are sequentially arranged in the filter press body, filter cloth is arranged on the two sides of each van-type filter plate, and the filter cloth is arranged in the filter press body. A filter chamber cavity of the filter press is formed by a gap between every two adjacent compartment type filter plates, the middle of each filter chamber cavity is communicated with a middle hole sludge inlet blow-off channel, filtrate discharge channels are arranged on the two sides of the top and the bottom of each compartment type filter plate respectively, and sludge and air are fed into the filter press body from the middle to the two opposite sides. Filtrate is discharged through the filtrate discharge channels on the two sides of the top and the bottom. Based on the characteristics of urban water plants, the sludge dewatering and filter pressing device is suitable for dewatering and filter pressing treatment on sludge produced by the urban water plants, the relative stability of produced water and sludge yield is kept, and the long-term stability of the filtering performance of the filter cloth can be ensured only by timely cleaning.