72 results about "Filtration - action" patented technology

The utility model relates to the technical field of aquaculture, and discloses a circulating filtering device for aquaculture, which comprises a culture pond, one side of the culture pond is provided with a first filtering box, the two sides of the first filtering box are both provided with first sliding grooves, and first sliding blocks are slidably mounted in the two first sliding grooves; first hydraulic cylinders are fixedly mounted at the bottoms of the two first sliding grooves correspondingly, and the output ends of the two first hydraulic cylinders are in transmission connection with first sliding blocks. A mounting frame and a filter screen can be driven to move upwards through a first sliding block and a scraping plate, and after the mounting frame and the filter screen move to the top, a second sliding block drives a fixing column and the scraping plate to move towards one side, so that residual solid impurities on the filter screen are pushed out of the filter screen, particle impurities on the filter screen can be efficiently removed, and the continuous and effective filtering effect of the filter screen is guaranteed; and through an ejector pin and a third sliding block, the ejector pin can be driven to move, meanwhile, meshes of the filter screen can be poked upwards, and the filtering effect of the filter screen is improved.

The well drilling fracturing device comprises a main pipeline, a flange fixing disc, an auxiliary pipeline and a filtering device, the filtering device is arranged, a filtering mechanism is in butt joint with an alignment groove in the lower side of the left end of a shell to be inserted into the alignment groove, and the installation stability of the filtering mechanism and the shell is improved through a fixing clamping groove; the filtering mechanism and the interior of the shell are well sealed through two sets of sealing rings, so that the filtering effect of the filtering mechanism on liquid in the auxiliary pipeline is improved, the filtering mechanism is arranged, and alignment plates are connected with the inner sides of fixing clamping grooves in an embedded mode through clamping blocks, so that the mounting stability of the alignment plates is improved; and through triple filtration of the primary filter plate, the intermediate filter plate and the third filter plate, the filtration effect on the liquid in the auxiliary pipeline is improved.

The utility model provides a multi-effect ultrasonic water treatment device which achieves the purpose of reducing the hardness of industrial water through an ultrasonic treatment technology in combination with precipitation and filtration effects. The device comprises a water inlet pipeline, a water outlet pipeline, an electromagnetic valve, an ultrasonic treatment section, a rib plate, a filtering section, a pollution discharge section and an ultrasonic generation device. The ultrasonic generating device is arranged at the top of the ultrasonic treatment section; the ultrasonic treatment section is provided with three sets of ultrasonic treatment devices, baffles and rib plates, and a drain outlet is formed in the bottom of the ultrasonic treatment section; and the filter section is provided with a filter element and a detachable base. The ultrasonic water treatment device performs ultrasonic treatment on impurities in water by utilizing an ultrasonic water treatment technology, and is obvious in descaling effect, convenient to operate, low in manufacturing cost and convenient to install. The industrial water scale inhibitor can be widely applied to the industry, the hardness of industrial water is reduced, hidden dangers and economic losses caused by scaling in water equipment are reduced, and safe operation of the industrial equipment is kept.

The utility model provides a microcapsule preparation device and relates to the technical field of seasoning preparation. The microcapsule preparation device comprises a base, the top of the base is provided with a feeding hopper, the interior of the feeding hopper is rotationally connected with grinding rollers which are symmetrically distributed in pairs, the interior of the base is movably provided with a collecting box, the inner wall of the bottom end of the base is provided with a filter screen, and the top of the filter screen is movably provided with a scraping plate. A working cavity is formed in the rear side of the base, a linkage mechanism is contained in the working cavity, a moving mechanism is arranged at the coupling position of the linkage mechanism and the scraper, and a driving mechanism is arranged at the driving end of the linkage mechanism. The microcapsule preparation device provided by the utility model has the advantages that ground raw materials can be uniformly spread, so that the filtering effect of the filter screen on the ground raw materials is ensured, the filtering speed is also improved, and the preparation quality and speed of soft capsules are further improved.

The invention relates to the technical field of liquid analyzers, and discloses an ethylene glycol formaldehyde index analyzer, comprising an analyzer head, a display screen is arranged on the outer surface of the analyzer head, an operation button is arranged on the outer surface of the analyzer head, a bottom connection seat is threadedly connected to the bottom of the analyzer head, a material collection tube is fixedly connected to the bottom of the analyzer head, a liquid passage is arranged outside the analyzer head, and a detection tube is fixedly connected to the surface of the liquid passage; through the filtering effect of a filter plate, impurities and precipitation in an ethylene glycol solution can be prevented from entering the interior of the material collection tube to form scale, and the existence of precipitation on the inner wall of the material collection tube can be prevented from hindering the fluidity of the material collection tube; at the same time, a cleaning scraper is attached to the material collection tube and circulates along the outer wall of the material collection tube, so that attachments on the surface of the material collection tube can be scraped off by the cleaning scraper and become loose and flow with the ethylene glycol solution.

The utility model relates to the technical field of engineering wastewater treatment, in particular to a wastewater treatment device with multiple purification, which comprises a shell, a drainage pipe is arranged at the lower end of the shell in a penetrating manner, a filter cartridge is arranged at the bottom in the shell, and the filter cartridge is positioned above the end part of the drainage pipe; a feeding hole is formed in the upper end of the upper cover in a penetrating manner, and a filter screen is arranged in the feeding hole; the lower end of the rod body is connected with a cylinder in a penetrating and sliding mode, the inner wall of the cylinder is attached to the side wall of the filter cylinder, and a plurality of transverse rods are distributed on the side wall of the rod body in an annular array mode. After preliminary filtration, mixing, stirring and precipitation, impurities and pollutants in the wastewater are effectively removed, and finally through the filtration effect of the filter cartridge, micro-particles and soluble pollutants in the wastewater can be further removed, so that multiple purification of the wastewater is realized, and the wastewater quality is improved. The multi-purification mode ensures that the water quality after wastewater treatment reaches related standards, and is beneficial to environmental protection and sustainable utilization of resources.

The utility model provides a crystallization filtering device for beta-cyclodextrin production, and belongs to the field of equipment for beta-cyclodextrin production. When the filtering device is used, reaction materials are put into the tank body, then rotation power of a transmission pipe below is carried to be transmitted to a stirring shaft through the action of a stirring motor in a transmission box, the stirring shaft starts to rotate, stirring blades arranged on the two sides of the stirring shaft rotate along with the stirring motor, and then the reaction materials in the tank body are fully stirred; therefore, sufficient reaction and crystallization are promoted, the crystallization effect is improved to the maximum extent, and the efficient stirring effect is realized. Once the crystallization process is completed, the filtering connecting pipe is opened, so that crystallized liquid flows out of the filtering connecting pipe, crystal substances are left in the tank body under the filtering action of the filtering connecting pipe, and the liquid is discharged. And after the liquid is discharged, the soft stirring scraping rod begins to rotate to scrape the crystals into the discharging pipe, and the crystals can be smoothly discharged through the discharging pipe, so that the efficient separation process of the crystals and the liquid is realized.

The invention discloses wastewater treatment equipment with separation and filtration functions for wastewater treatment, and relates to the technical field of wastewater treatment.The wastewater treatment equipment comprises a treatment frame, a transmission treatment mechanism, a treatment discharging mechanism, a separation mechanism and a bottom layer treatment mechanism, a working frame is mounted at the top end of the treatment frame, and recovery frames are mounted on the two sides of the treatment frame; the transmission processing mechanism comprises a gathering frame head, a tooth block and a fixing ring strip, and the gathering frame head is arranged at the bottom end in an inner cavity of the working frame. In the process of treating the wastewater, the temperature of the wastewater is regulated and controlled, lipid impurities mixed in the wastewater are condensed, the lipid impurities are separated under the buoyancy action of the wastewater, and independent discharging treatment is performed after separation is completed, so that the problem that the temperature of the wastewater is too high when liquid is discharged at a relatively low temperature in the later period is avoided; after the lipid impurities are agglutinated, a discharge outlet is blocked, and normal liquid discharge in the later period is influenced.

This utility model provides a novel columnar paint mist collector, including a shell. Multiple filter covers are fixedly installed on the inner wall of the shell. A first inner core is fixedly installed on the inner wall of each filter cover. A guide filter plate is fixedly installed on the outer wall of each filter cover. Multiple second inner cores are fixedly installed on the inner wall of each guide filter plate. Two full-coverage filter plates are also fitted onto the outer wall of each filter cover. Multiple third inner cores are fixedly installed on the inner wall of each full-coverage filter plate. The advantages of this utility model are: the guide filter plates reduce the leakage of air from the outside of the filter covers when they are misaligned; the full-coverage filter plates increase the overall filtration effect, thus adding a double filtration effect while filtering the filter cover at that position, thereby maintaining multiple filtration effects on the air while reducing the leakage of unfiltered air.

The utility model discloses a screw cap type deformable filtering device for preventing empty suction and blockage of a reagent needle, which comprises a screw cap, a hollow part is arranged in the middle of the screw cap, a latex connecting piece is arranged in the hollow part, a polytetrafluoroethylene film is arranged in the middle of the latex connecting piece, and a core accessory of the filtering device is a needle-shaped polytetrafluoroethylene film. Due to the excellent chemical characteristics, the filter material is suitable for reagents with various chemical properties, and the filter material can stably play a role in filtering acidic, alkaline and organic reagents. Under extreme environments such as high temperature and low temperature, normal work can be ensured, and the filtering effect cannot be influenced by environmental factors. The precise aperture design can effectively intercept tiny bubbles and particles which may cause empty suction and blockage of the reagent needle, so that the purity of a reagent extracted by the reagent needle is extremely high, an accurate and reliable reagent is provided for in-vitro diagnosis and detection, and the accuracy of a detection result is ensured.

This utility model discloses a hydraulic oil iron filings filtration device for a piston-feeding centrifuge. Its features include a guide plate and chip baffle mounted on a side rib, an iron filings bubble filter frame mounted on the side rib and above the guide plate and chip baffle, a filter screen on the iron filings bubble filter frame to eliminate air bubbles as the hydraulic oil passes through, and several magnetic strips on the iron filings bubble filter frame for filtering iron filings. Through the guide plate and magnetic strips, when iron filings travel with the hydraulic oil from the return oil zone through the oil cooling zone, the guide plate and chip baffle prevent the hydraulic oil from reaching the suction zone only through the iron filings bubble filter frame. As the hydraulic oil passes through the iron filings bubble filter frame, the iron filings are attracted by the magnetic strips on the frame, thus filtering the iron filings in the hydraulic oil. This prevents iron filings from re-entering the pressure cylinder with the hydraulic oil, which would aggravate wear on moving parts, leading to abnormal noise or complete damage to the piston assembly.

The application provides a rotary oil-water separator filtering device and relates to the technical field of oil-water separation.The filtering device comprises an air flotation machine, an oil discharge pipe is fixedly connected to the upper portion of the right outer wall of the air flotation machine, a water discharge pipe is fixedly connected to the lower portion of the right outer wall of the air flotation machine, a water inlet pipe is fixedly connected to the upper portion of the left outer wall of the air flotation machine, the other end of the water inlet pipe is connected with the filtering device, a rotating rod is rotatably connected to the inner bottom wall of the air flotation machine, an umbrella-shaped filter plate is connected to the upper portion of the rotating rod, the horizontal height of the umbrella-shaped filter plate is lower than that of the oil discharge pipe, a through groove is formed in the umbrella-shaped filter plate, and two symmetrically arranged scrapers are fixedly connected to the rotating rod at the lower portion of the umbrella-shaped filter plate.The filtering device can filter the residues in sewage, avoid the blockage of pipelines caused by small food residues, and facilitate the disassembly and cleaning of the filter screen body.

The valve comprises a valve mechanism, a filtering mechanism and a cleaning mechanism, the valve mechanism comprises a valve body and a valve plate rotationally connected into the valve body, a valve rod is arranged on the valve body in a penetrating mode, the valve rod is connected to the valve plate, one end of the valve body is a water inlet, the other end of the valve body is a water outlet, and a sewage draining hole is formed in the bottom of the valve body; the filtering mechanism comprises a filtering frame arranged in the valve body and located at one end of the water inlet, a filtering net is arranged in the filtering frame, and the sewage draining hole is located in the upstream side of the filtering net; the check valve has the advantages that under the filtering action of the filter screen, the possibility that impurities enter the valve body is reduced, the possibility that the valve plate is damaged is reduced, the sealing performance of the valve plate is improved, under the action of the pollution discharge hole, the impurities filtered by the filter screen can be discharged in time, and the service life of the check valve is prolonged. The possibility that the filter screen is blocked is reduced, and the filtering effect of the filter screen is improved.

1. Name of the product in this design: Mesh strainer (wooden handle cone mesh). 2. Purpose of this design: For filtration. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key features: the front view.

1. The name of this design product: Three-way water distributor (filtration). 2. Application of this product design: a three-way water distributor with filtering function used in bathroom and water purification fields. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the key points of the design: main view.

The utility model discloses a suction filtration device for food additive detection, and relates to the technical field of food additive detection.The suction filtration device comprises a fixing sleeve and a fixing cylinder arranged at the top end of the fixing sleeve, a dispersing and filtering mechanism is arranged above the fixing cylinder, and a fixing and limiting mechanism is arranged below the fixing cylinder; a detection solvent is put into a synchronous starting motor at an inlet in the top end of the device, the output end of the synchronous starting motor can drive two dispersion rods to rotate, the detection solvent can be supported through rotation of the dispersion rods, and meanwhile, the detection solvent can flow downwards while rotating through inclined arrangement of the dispersion rods, so that the detection solvent can be uniformly dispersed on a filter plate; then the detection solvent is filtered through the filter plate, when the filter plate needs to be replaced, the connecting rod can be pulled upwards, so that the insertion column is driven to be separated from the insertion groove, then the filter plate is driven to move to the bottom end of the supporting plate, and then the filter plate can be pulled out by pulling the filter plate towards one side.

The invention is an air filter comprising a filtering medium (10) suitable for perform a particle filtration action on the air crossing it so as to identify a dirty side (I1) and a clean side (I2). The filtering medium (10) comprises: - a first layer (100), facing towards the dirty side (I1), suitable for performing a particle filtration and collection action, wherein said first layer (100) is a non-woven fabric comprising synthetic fibers made of a polymer material; - a second layer (200), facing towards the clean side (I2) and arranged downstream of the first layer (100) with respect to the air circulation direction, for the fine filtration of the particles, wherein said second layer (200) is made of non-woven fabric comprising synthetic fibers made of at least two distinct polymer materials. In particular, the first layer (100) is thicker than the second layer (200) and the first layer (100) has a lower filtering efficiency than the second layer (200). The filtering medium (10) has an overall filtering efficiency greater than or equal to 99.9%.

The invention relates to a reservoir desilting device for water conservancy and hydropower engineering, and relates to the technical field of desilting equipment, the reservoir desilting device comprises a connecting main frame and a grab bucket assembly, the bottom of the connecting main frame is connected with a driving machine body, the bottom of the driving machine body is provided with a walking mechanism, and the top of the driving machine body is connected with a control cabin; a lifting mechanism is connected between the driving machine body and the top of the connecting main frame; the water draining device can freely move and adjust the direction, sludge at the bottom of a reservoir can be pushed and shoveled to be concentrated to one position to be treated in the moving process, the height and the translation position of the grab bucket assembly can be freely adjusted, after sludge grabbing is completed, the water draining action can be rapidly completed, and the working efficiency is improved. Through double water filtering actions of rotary centrifugal water throwing and extrusion drainage, the drainage rate is higher, the drainage time is shortened, the drainage amount is larger, and the dehydration rate is higher.

The utility model belongs to the technical field of sewage treatment equipment, and particularly relates to a self-floating water decanter. According to the utility model, the inner side wall of the decanted water collector is fixedly provided with a plurality of layers of filter screens which are vertically distributed at intervals, the uppermost layer of filter screen is positioned in an area below the water inlet of the decanted water collector, and the lowermost layer of filter screen is positioned in an area above the water outlet of the decanted water collector; the filter screen and the inner side wall of the decanted water collector are combined to form a foam accommodating cavity, and the foam accommodating cavity is filled with foam filter beads. According to the decanting water collector, a buoy does not need to be independently arranged, the foam filter beads are used for providing buoyancy required by floating of the decanting water collector, and meanwhile, the filter screen and the foam filter beads can play a double filtering role, so that the water quality at the tail end of the drainage hose is improved. The integrated sewage treatment device is relatively simple in overall structure, effectively realizes a filtering function, and is particularly suitable for integrated sewage treatment equipment.

The utility model discloses a purified water dispenser which comprises a water softening system, a water purifying system and a mineral water pipeline, the water softening system comprises a water softening valve and a resin tank, a valve shell of the water softening valve is provided with a raw water inlet channel, a first soft water outlet channel and a raw water outlet channel, and the raw water outlet channel communicates with the raw water inlet channel; the water purification system comprises a front filter element, a reverse osmosis filter element and a rear filter element which are sequentially arranged in the water path direction, and soft water passing through the water softening system can be subjected to multiple filtration through the water purification system to generate soft water which can be directly drunk. Raw water discharged through the raw water outlet channel can generate purified raw water under the filtering action of the front filter element, the purified raw water can be mixed with part of soft water in the soft water, and mineral water which can be directly drunk is formed in the mineral water pipeline.

The invention relates to the technical field of filtration and adsorption, in particular to a filtration and adsorption device for a variable air volume valve, which comprises a shell, a water storage box is fixedly mounted at the bottom of the shell, two adsorption mechanisms are symmetrically and rotatably mounted on the inner side of the shell, and each adsorption mechanism comprises two adsorption film groups. Two sets of concentration mechanisms are installed in the water storage box in a penetrating mode through bearings, and a circulation mechanism is installed on the inner side of the shell in a meshed mode through a first bevel gear. The design of the two symmetrically-arranged adsorption mechanisms is adopted, two adsorption film sets perpendicular to each other exist in each adsorption mechanism, the rotation directions of the two adsorption mechanisms are opposite, particle impurities in air are adsorbed through the soaked adsorption films, the adsorption films can rotate automatically in the process of rotating along with the rotating ring, and therefore the particle impurities in the air can be adsorbed. The adsorption film can be in full contact with water, the wet state can be kept, the good filtering effect is achieved, meanwhile, adsorbed particle impurities are dissolved in water, and the effect of automatically cleaning the particle impurities is achieved.

1. Name of the product in this design: Mesh Leak (Water Cube Handle Conical Mesh). 2. Purpose of this design: For filtration. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key features: the front view.

The utility model discloses a kind of pretreatment self-cleaning filtration systems for salt lake lithium extraction, it is related to salt field water treatment technical field, and it include: filter device, feeding device, online thick slurry discharge device, offline thick slurry discharge device, back flushing device, backwashing device, discharging device;Filter device includes filter, and the filter includes cylinder and the top cover of setting at cylinder top, filter core fixing plate is set between cylinder and top cover, and mounting port for being installed with filter core is opened on filter core fixing plate;Top cover is provided with filtered liquid outlet, back flushing and backwashing;Cylinder is provided with raw water inlet, thick slurry discharge port and vent port;Through the setting of self-cleaning filtration system, old brine / brine / tail brine can be entered into filter cylinder by feeding system, flow from outside to inside by filter core, after being treated, filtered water is entered into above filter core fixing plate of filter, is discharged by filtered liquid outlet, and the filtration of brine is completed again.

The invention discloses a thin film mass transfer device and a detection method thereof, and relates to the technical field of thin film mass transfer devices.The thin film mass transfer device comprises a base, a solution pool, a rotary connecting structure, a detection structure, a data processing assembly, a liquid level detection structure and a temperature control unit, the bottom of the base is a horizontal plane, and the base serves as a supporting structure of the mass transfer device; the top of the base is at least fixedly connected with one lifting structure, the lifting structure is provided with a lifting part, the interior of the solution tank is divided into a first solution cavity and a second solution cavity by a filtering film, and the first solution cavity and the second solution cavity can be used as loading structures of a solution to be detected and a solvent respectively. The filtering capacity of the filtering film is improved by abandoning a traditional pressurizing mode, the solute filtering effect of the filtering film can be effectively guaranteed, the film is prevented from being deformed and damaged, meanwhile, reagent consumption is reduced, and the use stability and reliability of the film mass transfer device are greatly improved.

The present invention relates to a post-plating cooling process and device, and belongs to the technical field of continuous annealing treatment. The process comprises the following steps: preliminary atomization: high-pressure water is initially atomized by the action of a gauze; mixing: supercritical fluid is uniformly mixed with the initially atomized droplets through the uniform flow field of the gauze; gauze atomization: the mixed droplets are broken again by the action of the gauze to obtain droplets with smaller particle size and more uniform distribution; explosive atomization: in the process of droplets being ejected through the gauze and then broken again, the supercritical fluid expands to obtain droplets with smaller particle size and more uniform particle size. The present invention realizes multiple atomization of droplets by combining a supercritical fluid and a hydrophobic gauze, thereby obtaining a spray with small droplet size and uniform particle size distribution. The present invention realizes uniform distribution of water and supercritical fluid by combining a narrow slit with the gauze, thereby improving the uniformity of spray distribution, and the channel gauze also plays a filtering role. The present invention reduces the evaporation temperature difference of the droplets by increasing the water temperature, which is conducive to the phase change of the droplets.

The invention provides a multi-frequency ultrasonic water treatment device with a self-cleaning function, which achieves the purpose of reducing the hardness of water by matching a multi-frequency ultrasonic treatment technology with centrifugal separation, precipitation and filtration effects. The device is composed of a water inlet pipeline, a water outlet pipeline, a blow-off pipeline, an electromagnetic valve, a separation and purification area, a filter, a dirt cleaning area and a visible area. The ultrasonic generating device is arranged at the top of the ultrasonic treatment section; a rotational flow plate is arranged between the inner cylinder and the outer cylinder of the ultrasonic treatment section, a water outlet is formed in the upper part of the separation and purification area, a filter screen is additionally arranged at a pipeline of the water outlet, an ultrasonic vibrator is arranged on the outer wall surface of the dirt cleaning area for self-cleaning, and a visible area and a blow-off pipeline are arranged at the bottom of the dirt cleaning area. The multi-frequency ultrasonic water treatment technology is used for treating impurities in water, operation is easy, cleaning is convenient, and the effect is remarkable. The industrial water scale inhibitor can be widely applied to the industry, the hardness of industrial water is reduced, the influence caused by scaling in water equipment is eliminated, and effective operation of the industrial equipment is kept.

The utility model discloses a liquid outlet device for tea capsule extraction, which comprises a liquid outlet device main body, and an extraction unit and a liquid outlet unit are arranged in the liquid outlet device main body; the extraction unit is communicated with the liquid outlet unit, and a first filtering part is arranged in the extraction unit; a second filtering part is arranged in the liquid outlet unit; after being extracted in the extraction unit, tea capsules are filtered by the first filtering part, flow into the second filtering part for secondary filtering and then flow out of the liquid outlet unit, the tea capsule extraction device is reasonable in structural design, and an extraction function is achieved by arranging the extraction unit; the liquid outlet unit is arranged, so that the liquid outlet work is performed after extraction; the first filtering part and the second filtering part are arranged, so that the effect of filtering the extracted tea drink is achieved; the first filtering part is arranged to achieve primary filtering, the second filtering part is arranged to achieve secondary filtering, the two filtering parts are arranged, so that the filtering effect is better, and the taste is better when a user tasts tea.

This utility model discloses an adjustable filtration device for a central water outlet, relating to the field of filtration adjustment technology. It includes a filter barrel and an inlet pipe mounted on the filter barrel. A filter chamber is disposed inside the filter barrel, and one end of the inlet pipe is located within the filter chamber. The filter chamber has through holes and openings, with a rotating shaft connected to the through holes. Six rotating plates are rotatably connected to the outer wall of the rotating shaft. Filter plates and spare filter plates are disposed inside the filter barrel. The filter plates and spare filter plates are staggered on the rotating plates, with the three staggered rotating plates not aligned with the filter chamber. This utility model allows the spare filter plates mounted on the rotating plates outside the filter chamber to perform their filtration function by rotating the plates back into the filter chamber. This enables the device to operate normally while the filter plates are being cleaned, reducing maintenance time and improving ease of use.

The utility model relates to the field of wastewater treatment, in particular to a multi-stage filtering device for recovering scum in production wastewater. The utility model relates to a multi-stage filtering device for recovering scum in production wastewater. The multi-stage filtering device comprises a cavity table, a first filtering plate, a guide plate, a valve and a scum recovery mechanism, according to the utility model, waste water drives scum to be gathered in the mounting box through the guide plate, so that the scum can be deposited under the blocking and filtering action of the second filter plate, and meanwhile, the flowing speed of the waste water is limited by the sinking assembly, so that the situation that the scum flows out along with the waste water due to too fast flowing of the waste water in the filtering process is avoided; and after the scum is treated, the wastewater is guided back into the cavity table by virtue of the water pipe, so that centralized wastewater treatment is facilitated.

The utility model relates to the technical field of oil-water separation, and discloses an oil-water-gas separation device with a filtering function for a calibration plastic pipe pressure resistance testing machine, which comprises a cylinder body, one side of the outer wall of the cylinder body is fixedly connected with a filter, and one side of the outer wall of the filter is fixedly connected with a pressure external interface. The two sides of the filter are fixedly connected with stainless steel flanges, the interiors of the stainless steel flanges are slidably connected with double-end threaded columns, the two sides of the outer wall of each double-end threaded column are in threaded connection with nuts, one side of the interior of the cylinder body is provided with an etalon external connector, and the interior of the cylinder body is slidably connected with a piston. According to the oil-water-gas separation device, in the process that liquid flows from a tested device to the cylinder body, the filter plays a role in filtering, impurities in the liquid are effectively filtered out, and the impurities are prevented from entering the cylinder body, so that a good filtering effect is achieved, and the problem that the separation effect is reduced due to the fact that water is directly guided into the oil-water-gas separation device is solved; and the separation quality and purity of the device are improved.