76 results about "Büchner funnel" patented technology

The utility model provides a sludge specific resistance measuring device, and belongs to the technical field of sludge specific resistance measuring devices. The sludge specific resistance measuring device comprises a suction filtration cylinder and a Buchner funnel inserted into a pipe opening of the suction filtration cylinder, a sealing sleeve is arranged on the edge of the pipe opening of the suction filtration cylinder in a surrounding mode, a counterweight sleeve is arranged on a funnel neck of the Buchner funnel, a valve is arranged on a pipeline c, the sludge specific resistance measuring device further comprises a timer, and the timer is electrically connected with a vacuum pump and a normally-open electromagnetic valve. After the determination time is up, the vacuum pump and the normally-open electromagnetic valve can be automatically closed to release pressure in the buffer tank, so that the problem that the detection result is influenced as the suction time of the filtering device by the existing determination device exceeds the preset time is solved; the balance weight sleeve enables the Buchner funnel to be always in a fit state with the sealing sleeve, so that the sealing performance of the Buchner funnel and the suction filtration cylinder is enhanced, and the problem that the detection result is inaccurate due to air leakage caused by untight sealing in the use process is avoided.

The utility model relates to a water-soluble hexavalent chromium filtering and collecting device, which belongs to the field of laboratory collection, and comprises a Buchner funnel (1) and a tray (2), the Buchner funnel (1) comprises a funnel opening (3) and a funnel neck (4), the funnel neck (4) is arranged at the bottom of the funnel opening (3), the funnel neck (4) is connected with the tray (2), the Buchner funnel (1) is taken out, and a beaker (11) filled with filtrate is taken out at the same time. The Buchner funnel (1) is provided with a suction filtration bottle (5), the suction filtration bottle (5) is provided with an extraction opening (6), the extraction opening (6) is connected with an extraction pipe (7), the extraction pipe (7) is connected with the suction filtration bottle (5), and the suction filtration bottle (5) is connected with the suction filtration bottle (5). The exhaust pipe (7) is connected with a vacuum pump (8), so that the filtering effect is improved, and the filtering is faster.

The utility model discloses a rapid leaching device for soil cations, which relates to the technical field of soil remediation and comprises a base support, a vacuum pump is mounted at one end of the base support, and a gas distributor is mounted at the upper end of the vacuum pump. Through the arrangement of the base bearing frame, the vacuum pump, the gas buffering bottle, the vacuum pipe, the suction filtration bottle and the Buchner funnel, the rubber plug inserted with the vacuum two-way pipe and the L-shaped pipe and the gas buffering bottle are well installed, then the Buchner funnel and the suction filtration pad are installed on the suction filtration bottle, and then the gas buffering bottle and the suction filtration bottle are clamped in the clamping grooves at the same time. The L-shaped pipe is connected with a certain connector of the gas distributor through the vacuum pipe, then the L-shaped pipe is clamped with a certain connector of the gas distributor through the vacuum casing pipe integrated with the L-shaped pipe, the vacuum pump is started for extraction work, especially when ore samples such as zeolite and quaternary ammonium salt surfactants are added, a large amount of foam can be generated, and liquid in the suction flask is effectively prevented from being sucked into the vacuum pump through the gas buffer bottle; the protection effect of the device is improved.

This invention discloses a device for preventing mud spillage during fine mineral filtration, relating to the field of mineral processing and solid-liquid separation equipment. It includes: a Buchner funnel, a filtration flask, a collection cylinder, an anti-backflow bottle, and a vacuum pump. The Buchner funnel is connected to the filtration flask, and the filtration flask's exhaust port is sequentially connected to the collection cylinder, the anti-backflow bottle, and the vacuum pump via pipelines. The collection cylinder includes a shell, a flow guide, a filter assembly, a collection chamber, and an end cap. The shell has an inlet and an outlet on both sides. The inlet is connected to the exhaust port of the filtration flask via a pipeline, and the outlet is connected to the anti-backflow bottle via a pipeline. The flow guide is located on the inlet side of the shell, and the filter assembly is located inside the shell. This invention uses the flow guide to rectify the airflow to protect the filter surface, and the filter assembly to intercept fine particles, preventing them from entering subsequent equipment. The removable end cap allows for quick and complete removal of the filter assembly, improving collection efficiency while simplifying maintenance.

The present invention relates to a suction filter, and specifically discloses a fully automatic Büchner sand core two-in-one intelligent suction filter, comprising a Büchner funnel, a sample rack A, a collection bottle, a panel, a suction filter device, a filter membrane, a sand core, a sand core funnel and a large-capacity collection bottle. The suction filter device is provided with a boss A, a filter nozzle and a boss B, and a tray is provided with a clearance hole, hole A, a boss, a threaded hole A, and a threaded hole B. The clearance hole is used to avoid the filter nozzle on the suction filter device. A sleeve is provided on the hole A, and a spring is installed in the sleeve. The lower end of the spring contacts the boss A on the suction filter device, and the upper end of the spring and the upper end of the sleeve contact the bottom surface of the spring pressure plate. In the intelligent suction filter provided by the embodiment of the present invention, the entire assembly process is fully automatic and intelligent operation, does not require monitoring, has active alarm and automatic shutdown functions, can filter multiple or multiple filtrates at the same time, can realize remote operation, and can realize batch filtration of filtrates.

The invention discloses a catalytic filter material with a low-temperature CO oxidation function and a preparation method thereof.A carbon-loaded metal oxide material serves as a core of low-temperature CO oxidation catalysis, CO in flue gas is removed while dust is removed, and the temperature of the flue gas is increased. The preparation method comprises the following steps: adding 0.1-10wt% of nitrate of active metal into 100mL of deionized water to obtain a metal precursor solution; 2, dilute ammonia water is dripped into the metal precursor solution obtained in the step 1, full stirring and precipitation are conducted, the pH value is controlled to be 7-9, and a precipitate is obtained; 3, taking a carbon material as a matrix, adding the matrix into the precipitate obtained in the step 2, and carrying out ultrasonic treatment to obtain a mixture; 4, taking a polymer filter material, cutting the polymer filter material into slices, placing the slices at the bottom of a Buchner funnel, and pouring the mixture in the step 3 into the Buchner funnel for suction filtration to obtain a filter material; and 5, baking the filter material obtained in the step 4 in a baking oven to obtain the carbon-loaded metal oxide functional filter material.

To provide a washing machine capable of simply and efficiently washing powder and granular material such as nickel powder or slurry thereof with a small work load.SOLUTION: A filtering and washing machine for powder and granular material represented by nickel powder suitably having a mean particle size of 200nm or less produced by a liquid phase method or a slurry thereof includes a Buchner funnel 1, a positive displacement pump 4 suitably including a reciprocating pump such as a diaphragm pump connected to an extraction nozzle of the Buchner funnel 1 via a pipe 3, and a flexible hose 5 represented by a blade hose connected to a discharge side of the positive displacement pump 4, and is preferably mounted on a truck 6.SELECTED DRAWING: Figure 1

The utility model discloses a porous plastic cushion film for suction filtration solid-liquid separation of a Buchner funnel, which is of a circular sheet structure and is arranged between suction filtration holes of the Buchner funnel and filter paper, the diameter of the cushion film is 0.83-0.91 times of that of the filter paper, the cushion film is ensured to be tightly attached to the edges of the suction filtration holes of the Buchner funnel, uniform support is provided for the filter paper, and the filter paper is prevented from being damaged. And the filter paper is prevented from being broken due to negative pressure. The cushion film is made of corrosion-resistant and chemically inert materials such as ziplock bag plastic, umbrella cloth and acrylic fibers, the surface of the cushion film is smooth and easy to clean or disposable, and the problems that traditional filter cloth is difficult to clean and pollutes are solved. According to the pad film, liquid circulation is optimized through a porous structure, meanwhile, the fitting degree of the filter paper and the Buchner funnel is enhanced, liquid leakage is prevented, and the experiment success rate and operation convenience are remarkably improved. Compared with the prior art, the technical scheme is simple in structure, low in cost and high in adaptability, provides a stable and efficient solid-liquid separation effect, and solves the problems of filter paper damage and liquid leakage.

The utility model relates to the technical field of separation equipment, and discloses a sample impurity separation device for food detection, which comprises a suction flask, a Buchner funnel is inserted into the top of the suction flask, a filter paper sheet is laid in the Buchner funnel, and a stirring mechanism is arranged in the Buchner funnel. The stirring mechanism and the extruding mechanism are arranged in the Buchner funnel, in the solid-liquid separation process of a sample, the stirring mechanism can stir liquid to be detected, exchange between impurities and filter paper is promoted, meanwhile, the impurities can be evenly distributed in the stirring process, accumulation of the impurities is avoided, and the filtering speed is reduced; therefore, the sample can quickly penetrate through the filter paper sheet and the funnel meshes, so that the filtering speed is accelerated, and the impurity separation efficiency is improved.

The invention provides a preparation method and application of a polyethylene-coated carbon nanotube electrode material, and belongs to the technical field of plastic processing, and the preparation method comprises the following steps: collecting waste polyethylene products, chopping, cleaning to remove impurities, filtering, and drying; the method comprises the following steps: adding waste polyethylene fragments into a xylene solution, magnetically stirring and mixing, adding into a Buchner funnel, carrying out suction filtration, and collecting filtrate; weighing a carbon nano tube, adding the carbon nano tube into the filtrate, and continuously heating and mixing to prepare a colloidal solution; dropwise adding the colloidal solution into a cyclohexanone solution, carrying out ultrasonic mixing, separating out powder precipitate, filtering, washing with an ethanol solution, and drying to obtain composite powder; the composite powder and activated carbon are mixed and placed in a ball mill to be ground, electrode powder is prepared, the electrode powder is poured into a round mold, round electrode particles are prepared through pressing under a hydraulic machine, and the round electrode particles are annealed to prepare the polyethylene-coated carbon nanotube electrode. According to the invention, high value-added utilization of polyethylene and greenness and harmlessness of the final product waste can be realized.

The utility model discloses a laboratory sample combined filtering device which comprises a Buchner funnel and a sand core suction filter which are distributed up and down. According to the utility model, the ceramic Buchner funnel and the sand core suction filter are integrated in one device, so that the integrated operation of rough filtration and fine filtration is realized, the experimental process is simplified, and the operation efficiency is improved; the integrated device reduces the dependence of a laboratory on a plurality of independent filtering devices, and reduces the equipment purchase and maintenance cost; the filtering process is completed in the same device, so that the loss and pollution risk of the sample in the transfer process are reduced, and the reliability of an experimental result is improved; the device can flexibly adjust the filtration precision of rough filtration and fine filtration according to the requirements of different samples, and is suitable for various experimental scenes.

The utility model discloses an improved sludge specific resistance measuring device, which belongs to the technical field of sludge treatment and comprises a suction filtration measuring cylinder, and a Buchner funnel is arranged at an opening of the suction filtration measuring cylinder; a first sealing piece is arranged at the joint of the Buchner funnel and the suction filtration measuring cylinder; the liquid discharge cylinder is communicated with the suction filtration measuring cylinder through a communication pipeline; the communicating pipeline is provided with a valve; the suction filtration cylinder is communicated with the top of the suction filtration measuring cylinder through a second vacuum pipe; the output end of the vacuum pump is communicated with the suction filtration cylinder through a first vacuum pipe. According to the device disclosed by the utility model, the liquid discharge cylinder is arranged, so that treated liquid can be discharged into the liquid discharge cylinder, and the next step of operation can be carried out, such as measurement of other elements such as pH value and the like or discharge treatment is more convenient.

The utility model discloses a suction filtration device capable of detecting gold, which comprises a filtrate tank, an adsorption column mounted on the filtrate tank, an air suction hole formed in the filtrate tank, a first rubber plug mounted between the filtrate tank and the adsorption column, a filter plate mounted in the adsorption column, and a second rubber plug mounted on the adsorption column. The second rubber plug is used for being connected with a Buchner funnel, a micro spectrometer is installed on the side face of the adsorption column, the filter plate is installed on the inner wall of the adsorption column in a sliding mode, a fixing ring and a fixing clamp are fixedly installed on the outer side of the adsorption column, the fixing clamp is made of an elastic plastic material, and a push handle is installed in the fixing clamp in a clamped mode. A rubber head is installed at the top of the push handle, the push handle is taken out of the fixing clamp, stretches into the bottom of the adsorption column and pushes the filter plate outwards to drive the mixture to move outwards, the mode that a glass rod is used for taking out the mixture in the adsorption column is replaced, operation of workers is facilitated, and the working efficiency is improved.

The utility model belongs to the technical field of 5-hydroxy-1-methyl-3-trifluoromethyl-1H-pyrazole preparation, and particularly relates to a pyrazole compound suction filtration device which comprises a Buchner funnel, a suction filtration box, a liquid collection box and a vacuum assembly, the Buchner funnel is connected to the suction filtration box, the vacuum assembly comprises a first guide pipe and a second guide pipe, and the first guide pipe is connected with the liquid collection box. One end of the first guide pipe is connected with the top of the suction filtration box, and the other end of the first guide pipe is connected with the top of the liquid collection box; a third guide pipe is further arranged at the position, close to the top, of the liquid collecting box and connected with a power device. Compared with the prior art, the device disclosed by the utility model can be used for amplifying production and realizing continuous suction filtration, and meanwhile, the stability of the device in an operation process is improved.

The invention provides a purification system of a breakdown test device, a control method and the breakdown test device. The purification system comprises a Buchner funnel, a closed container and a vacuum pump. Wherein the upper end of the Buchner funnel is hermetically communicated with an insulating oil pool of the breakdown test device, laminated qualitative filter paper with micron-sized aperture is arranged in the Buchner funnel, the closed container is respectively communicated with the lower end of the Buchner funnel and the insulating oil pool, the vacuum pump is communicated with the closed container, and the vacuum pump is used for exhausting air from the closed container. Therefore, the insulating oil is respectively subjected to impurity filtration and water removal treatment under the action of negative pressure. Through the arrangement, under the action of negative pressure, on one hand, the circulation rate of the insulating oil passing through the qualitative filter paper can be increased, rapid filtering of micron-sized carbonized particles in the insulating oil is achieved, on the other hand, water in the damped insulating oil can be rapidly separated out through the action of negative pressure, and the purification efficiency is overall improved; and the purity and dielectric stability of the filtered insulating oil are enhanced.

The utility model relates to the field of cleaning devices, in particular to an efficient and durable simple device for cleaning a nuclear magnetic tube. The Buchner funnel is arranged at the bottle opening of the top end of the suction filtration bottle in a sealing manner; the plurality of hollow pipes are inserted into the Buchner funnel in a penetrating and sealing manner; the bottom ends and the top ends of the hollow pipes are correspondingly positioned on the inner side and the outer side of the suction filtration bottle respectively; the vacuum pump is communicated with the communication opening of the side surface of the suction filtration bottle; the Buchner funnel is provided with a liquid storage tank with an upward opening, a plurality of through holes are formed in the bottom of the liquid storage tank, and the hollow pipes are inserted into the through holes in a penetrating and sealing mode. The nuclear magnetic tube cleaning device is simple in structure, convenient to use, low in cost, high in cleaning speed and good in effect, the nuclear magnetic tube cannot be scratched and broken, and the service life of the nuclear magnetic tube can be prolonged.

The utility model relates to the technical field of laboratory equipment, especially a screw mouth Bunsen funnel filtering device, including filter mechanism and being used for vacuum filtration separation solid -liquid mixture, filter mechanism includes: main part subassembly, including the funnel that sets up on the upper end of adapter, the inner wall of funnel is opened with internal thread, the lower end inner wall of adapter is opened with GL45 thread and is used for adapting connection GL45 screw mouth reagent bottle, the side end of adapter is fixed with the air suction nozzle of intercommunication and is used for connecting vacuum pump, and the inside fixed support plate of funnel, filter membrane, set up on the support plate and be used for retaining solid material in the process of vacuum filtration, clamping assembly, set up on the main part subassembly and be used for the filter membrane pressure tight fixing, realized the integration of filtering and storage function, saved the cumbersome step of transferring filtrate from traditional suction filter bottle, greatly promoted the operation efficiency and reduced the sample pollution risk.

The invention provides a pretreatment method for determining soil exchangeable salt composition, and relates to the technical field of soil detection, and the pretreatment method comprises the following steps: placing a weighed sample in a conical flask, adding ammonium acetate, shaking uniformly, and standing for one night; performing suction filtration by using suction filtration equipment, connecting a suction filtration flask to a suction filtration main pipeline, putting a Buchner funnel with a rubber plug on the suction filtration flask, and then putting filter paper into the Buchner funnel; pouring supernatant on the upper layer in the conical flask into a Buchner funnel with filter paper through conveying equipment; the interior of the conical flask is washed with ammonium acetate, so that all soil in the conical flask is transferred into the Buchner funnel; washing the soil sample in the Buchner funnel by using a washing bottle filled with ammonium acetate; according to the invention, the reaction of the sample is more complete, and the exchange is more thorough; the pretreatment efficiency is greatly improved, the loss of the glass rod with the rubber head is avoided, the blockage probability of an instrument is reduced, and the suction filtration speed in the early stage is higher.

The utility model discloses a filtering device for replacing a Buchner funnel and a suction flask in a laboratory, which belongs to the technical field of vacuum suction filtration and comprises a first Buchner funnel and a suction flask arranged below the first Buchner funnel, and the first Buchner funnel and the suction flask are of an integral structure; a funnel cover plate is arranged at an opening in the top of the first Buchner funnel, a second Buchner funnel is arranged above a bushing of the first Buchner funnel, a U-shaped pipe is connected to one side of the suction flask, a vacuum connector is formed in the top of the side wall of the suction flask, connecting pipes are connected to the two ends of the U-shaped pipe, and the two ends of the U-shaped pipe are connected with a vacuum pump. And the connecting pipe close to one side of the suction flask is connected with the vacuum connecting port. According to the filtering device capable of replacing the laboratory Buchner funnel and the suction flask with the structure, the filtering device of the first Buchner funnel and the suction flask which are integrally designed and made of the PP material is corrosion-resistant and not easy to break, and the whole filtering device can be directly cleaned from top to bottom through cleaning liquid.

The utility model discloses a crystal suction filtration device for extracting gibberellic acid, relates to the technical field of suction filtration, and aims to solve the problem that when existing filter paper and solids on the filter paper are taken, a Buchner funnel needs to be turned over, a drainage rod is used for assisting in taking out, and the process is troublesome. Comprising a suction flask and a Buchner funnel, the Buchner funnel is inserted into an inlet of the suction flask through a plug on the outer wall, a filter screen is arranged in the Buchner funnel, the filter screen is in sliding connection with the Buchner funnel, and an assist device in sliding connection with the filter screen is arranged on the filter screen; the assistor is matched with the placement groove in the top of the filter screen, and the connecting piece is placed in the placement groove, so that after suction filtration operation is completed, the filter paper can be easily taken out only by holding the vertical plate or the reinforcing ring on the top of the vertical rod with one hand, and the time for turning over the Buchner funnel and using a drainage rod is saved.

The utility model relates to the technical field of auxiliary materials of test equipment, and discloses a Buchner funnel with a filter paper cylinder, which comprises a funnel body, a filter paper cylinder body is arranged on the inner side of the funnel body, and the filter paper cylinder body comprises a base, a limiting plate and an adjusting plate. The outer side of a filter paper material is limited through the limiting plate and the adjusting plate, so that the filter paper material is folded along the folding cross section and is convenient to use, the partition plate is arranged on the bottom side of the base, the bottom of the folded filter paper material can be supported, and the situation that the filter effect is reduced due to the fact that the filter paper material is attached to filter holes in the funnel body is avoided; furthermore, through holes are formed in the top sides of the partition plates, the problem that the filtering effect of the filter paper material is reduced due to blockage of the holes is further avoided, the filter paper cylinder body can be directly taken out by directly pulling the grip after use, the filter paper material is conveniently replaced, filter residues are conveniently taken out, and use is convenient and fast; the filter paper material taking-out difficulty can be effectively reduced, and funnel body pollution is avoided.

The utility model discloses a vacuum suction filtration tank for biopharmacy, and relates to the technical field of biopharmacy. The device comprises a base, a suction filtration bottle is arranged at the top of the base, an output pipe is arranged on the circumferential side face of the suction filtration bottle in a communicating mode, a vacuum suction filtration machine located on one side of the suction filtration bottle is arranged at the top of the base, a rubber pipe is connected between the vacuum suction filtration machine and the output pipe, and a Buchner funnel is inserted into the top of the suction filtration bottle. And a sealing sleeve matched with the suction flask is fixedly sleeved on the peripheral side surface of the funnel pipe in the Buchner funnel. According to the Buchner funnel, through the bearing box which is arranged in a sliding manner, when a solid-liquid mixture is subjected to vacuum filtration, solids in the bearing box after filtration can be independently taken out firstly, so that the situation that the safety of operators is influenced by flying of the solids in the Buchner funnel in the process of pulling out the Buchner funnel due to the fact that a sealing sleeve on the Buchner funnel and a suction flask are clamped too tightly is avoided; and the safety and the convenience of operation are effectively improved.

The utility model discloses a water sample detection suction filtration device which comprises a working table, a U-shaped plate is fixedly installed at the top of the working table, a lifting plate is installed on the surface of the U-shaped plate through a lifting mechanism, a sliding groove is formed in the inner wall of the U-shaped plate, a containing hole is formed in the surface of the lifting plate in a penetrating mode, and the sliding groove is communicated with the containing hole. A Buchner funnel is slidably mounted on the inner wall of the placement hole, a limiting groove is formed in one side of the inner wall of the placement hole, and a moving plate is mounted on one side of the inner wall of the limiting groove through a clamping mechanism. After suction filtration is completed, a motor drives a lead screw to rotate, the lead screw drives a sliding block to move, the sliding block drives a lifting plate to move, the lifting plate drives a Buchner funnel to move, the Buchner funnel is separated from the interior of a suction flask, and at the moment, a detector can take away the suction flask for detection; the Buchner funnel does not need to be manually separated from the suction flask by a worker, and the Buchner funnel and the suction flask can be quickly placed only by repeating the process when detection is needed, so that the detection speed is increased, and manpower is saved.

The invention relates to the technical field of desulfurization barren liquor salt extraction, in particular to a coal chemical raw gas desulfurization barren liquor salt extraction method. The method comprises the following steps: step 1, a preparation stage: preparing experimental apparatuses, wherein the experimental apparatuses comprise a 500mL measuring cylinder, a balance, a vacuum pump, a Buchner funnel, a drying oven, a conductivity meter and an ion chromatograph; the desulfurization barren solution and the desalting agent are mixed and stirred three times according to different proportions, and three different turbid solutions are obtained.According to the method for extracting salt from the raw gas desulfurization barren solution in the coal chemical industry, the alcohol-containing solvent and the desulfurization barren solution are mixed according to the proportion, so that a large number of salt substances can be separated out, and the salt substances are separated out; wherein 81% of sodium sulfate and 74.8% of total salt in the barren solution can be extracted according to the ratio of the desalting agent to the barren solution being 1: 1, so that the problem that the hydrogen production desulfurization barren solution is high in salt enrichment is solved, the operation efficiency of a desulfurization system is improved, and the stability and reliability of the salt extraction effect are improved through detailed experimental steps and control over all links, so that the production efficiency of the coal chemical industry is improved.

The invention relates to a process method for filling BN with TSV, and belongs to the technical field of microelectronic integration. Comprising the following steps: designing and manufacturing a TSV array; preparing a BN dispersion liquid; and adding the BN dispersion liquid into the Buchner funnel, enabling the dispersion liquid to completely cover the surface of the silicon wafer, starting a vacuum pump in the suction filtration device to carry out vacuumizing treatment, enabling a pressure difference to exist between the Buchner funnel and the suction filtration bottle, enabling the BN dispersion liquid to permeate downwards under the action of atmospheric pressure, and filling the TSV with the BN. The problem that filling of insulating and high-heat-conduction materials cannot be achieved through an electroplating technology in the prior art is solved. The method has the advantages of being low in process cost, easy to operate and the like, and a new thought and method are provided for material design in the field of micro-nano device thermal management.

The utility model relates to the technical field of chemical engineering, in particular to a vacuum suction filtration device which comprises a suction filtration bottle, the interior of the suction filtration bottle is divided into a main cabin and an auxiliary cabin, the top of the suction filtration bottle is detachably connected with an adapter, the adapter is provided with two upper openings and a lower opening, the top of the adapter is detachably connected with a Buchner funnel, and the Buchner funnel is provided with a lower opening. The lower opening of the Buchner funnel can be communicated with the upper opening of the adapter, the surface of the Buchner funnel is fixedly connected with a protective cover, the protective cover is used for covering the upper surface of the adapter, the surface of the protective cover is provided with a communicating hole, and the communicating hole is communicated with the lower opening of the Buchner funnel. The utility model aims to solve the problem that the conventional suction filtration device generally adopts a single-cabin design mode, so that filtrate and washing liquid are mutually mixed after suction filtration.

The utility model discloses an underwater non-dispersible concrete suspension content testing device which comprises a material storage tank, a quantitative tank, a beaker, a peristaltic pump and a vacuum suction filtration assembly, the top and the bottom of the quantitative tank are respectively provided with a first material pushing assembly and a first material outlet, the beaker is located below the quantitative tank, a first material inlet is formed in the side face of the quantitative tank, and a second material outlet is formed in the bottom of the quantitative tank. The top and the bottom of the material storage tank are respectively provided with a second material pushing assembly and a second material outlet, the second material outlet is communicated with the first material inlet through a material conveying groove, one end of a hose arranged on the peristaltic pump extends into the beaker, and the other end of the hose is connected with the vacuum suction filtration assembly. The method comprises the following steps: dividing a concrete sample into a plurality of equal parts, putting the parts into a beaker filled with water part by part within a specified time, pumping the water into a vacuum suction filtration assembly by using a peristaltic pump, performing vacuum suction filtration, and separating suspended matters from the water by using filter paper in a Buchner funnel so as to weigh the suspended matters and obtain the content of the suspended matters in the water.

The invention relates to the technical field of concrete detection, and discloses an auxiliary detection device for gas permeability of unsaturated concrete, comprising an operating table, a suction filter pump fixedly installed on the top of the operating table, a suction filter mechanism, a test component, a gas flow detector and a high-pressure air pump, and a concrete test piece arranged inside the suction filter mechanism and the test component. The suction filter mechanism comprises a support frame and a support table fixedly installed on the operating table, and a bearing component fixedly installed on the inner wall of the support frame. By setting a filter bottle component, water filtered in a Buchner funnel is dripped into a hemispherical filter bottle through a drip pipe, and then evenly distributed in five water accumulation chambers through a hemispherical diversion block, each water accumulation chamber stores 20% of water, and at this time, the upper through holes in the water accumulation chamber are all misaligned with the middle through holes, and the middle through holes are respectively corresponding to the upper through holes and the lower through holes by adjusting the components, so that the water in the water accumulation chamber flows into the water delivery component, so as to achieve the effect of controlling the water delivery amount.

The utility model relates to the technical field of test equipment, and provides a simple porous suction filtration device for a laboratory, which comprises a suction filtration bottle I, a suction filtration bottle II, a suction filtration bottle III and a spherical suction pipe, and is characterized in that the upper ends of the suction filtration bottle I, the suction filtration bottle II and the suction filtration bottle III are connected with Buchner funnels; the left side of the third suction flask is communicated with the right side of the second suction flask through a first rubber hose, the left side of the second suction flask is communicated with the right side of the first suction flask through a second rubber hose, the left side of the first suction flask is communicated with the right side of a spherical suction pipe through a third rubber hose, and the upper end of the spherical suction pipe is communicated with a faucet through a fourth rubber hose. The three suction filtration bottles are adopted, three samples can be simultaneously subjected to suction filtration, the working efficiency is improved, the suction filtration speed is controlled by adjusting the water pressure of the faucet, the problem that the vacuum pump is polluted and corroded by water vapor of suction filtration liquid does not exist, the used device is simple, and the detection cost is reduced.

The alkali precipitation desalting method comprises the following steps: S1, taking the distilled amine wastewater, slowly adding a certain amount of caustic soda flakes into the distilled amine wastewater, stirring and dissolving in a water bath at 50 DEG C, then cooling to 25 DEG C, and standing for 30 minutes; s2, the solution obtained after standing is further subjected to centrifugal separation and precipitation, upper-layer alkali liquor and precipitates are obtained, and the upper-layer alkali liquor can be circularly used for neutralization reaction liquid to serve as an alkaline raw material for producing tetramethylethylenediamine; and S3, washing the precipitate with deionized water, pouring the washed precipitate into a Buchner funnel, carrying out suction filtration, and carrying out vacuum drying treatment on a filter cake to obtain a pure sodium salt product. Compared with a traditional desalting method, the alkali precipitation desalting method for the amine steaming wastewater has the advantages that the cost is saved, steam distillation is avoided, the upper-layer alkali liquor can still be used as alkali to neutralize reaction liquid before amine steaming, the replacement desalting efficiency is high, the recycled salt can be recycled, the production cost is reduced, environmental protection and economical efficiency are both considered, and the alkali precipitation desalting method is suitable for industrial popularization and application.