6149results about "Filtration separation" patented technology

The invention discloses a pressure regulating solenoid valve, which relates to the technical field of solenoid valves, and comprises a valve body, the top of the valve body is provided with a valve seat, the valve seat is internally provided with a cavity, and through the arrangement of a first pressurizing hole, a second pressurizing hole, a flow dividing hole, a first flow dividing pipeline, a second flow dividing pipeline, a first pressurizing cavity and a second pressurizing cavity, the pressure regulating solenoid valve is formed. During use, when unstable high water pressure flows into the valve body, the high water pressure pushes the inner barrel upwards, then the inner barrel moves upwards to drive the flow dividing holes to move upwards, the flow dividing holes are driven to be sequentially in butt joint with the first pressurizing hole and the second pressurizing hole respectively, and then water is divided into the first flow dividing pipeline and the second flow dividing pipeline; then water flows into the first pressurizing cavity or the second pressurizing cavity, then water pressure is dispersed, then the water flowing into the first pressurizing cavity or the second pressurizing cavity downwards compresses the first spring to cause deformation shortening, and meanwhile, a stretched second spring is matched, so that when the water pressure upwards jacks the sleeve and the inner cylinder, buffering protection on the sleeve and the inner cylinder is enhanced.

Embodiments described herein provide a self-contained, above-the-counter beverage dispenser that allows for personalization of flavor intensity, temperature, and carbonation levels. The system can have a small form factor that allows it to sit on a countertop and below upper cabinetry. The dispenser can dispense carbonated beverages, still beverages, flavored beverages, hot beverages, cold beverages, and combinations thereof. Moreover, unlike existing systems, embodiments described herein may maintained by a user without special training, tools, or technical expertise. The dispenser can include consumable components, such as ingredient cartridges, a gas cylinder, and a filter. Each of these consumable components can be replaced easily without any tools or special training or expertise. Additionally, all consumables can be accessible behind a door on the front of the machine, making them readily accessible by only opening the front door.

The invention discloses a method for realizing multi-stage solid-liquid separation by using graded filter pipes, which relates to the technical field of solid-liquid separation, and comprises the following steps: under the condition that the particle size between adjacent filter pipes is at a critical boundary, collecting a continuous motion track of particles in a particle size interval in a filter transition area, extracting a direction vector change sequence and a flow velocity disturbance amplitude, and judging whether particles of which the direction reversal frequency exceeds a preset threshold and the flow velocity disturbance amplitude is lower than a stable fluctuation limit exist or not so as to determine whether a particle repeated movement state occurs or not; a drift factor and a disturbance sensitivity factor are constructed according to a particle repeated movement state and are introduced into an affiliation path identification model as input variables, and affiliation judgment operation is executed through an affiliation probability calculation network. According to the invention, the problem that the path attribution of particles with critical particle sizes in the filtering transition area is unknown is solved, and the dynamic identification and accurate guide control of the particle attribution path are realized.

The invention discloses a filter cloth on-line automatic cleaning control method and system for a filter cloth walking type filter press, and relates to the technical field of solid-liquid separation equipment automation control, and the method comprises the following steps: S100, constructing a cleaning control topological structure, grouping filter cloth according to the number of the filter cloth, configuring a corresponding cleaning solenoid valve and a cleaning nozzle for each group, the valve opening sequence table is connected to a cleaning pump through a cleaning pipeline, and meanwhile, a set of valve opening sequence table for all groups is generated. The filter cloth is grouped, the cleaning valves and the nozzles are independently controlled, and real-time parameter calculation and alternate valve opening logic are combined, so that accurate scheduling and balanced distribution of the cleaning area and frequency are realized. Through a walking counting and condition judgment mechanism, cleaning is started according to needs, efficiency is improved, and energy consumption is reduced. A closed-loop control process of setting, judging, executing, alternating and recording is constructed, and the comprehensive technical effects of filter press cleaning rhythm stability, resource optimization, efficiency improvement, equipment service life prolonging and the like are achieved.

The utility model discloses a multi-filtering-form multifunctional sewage blocking treatment system for a riverway, which comprises a group of soft enclosures which are sequentially arranged along the riverway to form a plurality of independent water purification areas, floating plants and ecological plant floating beds are arranged in the soft enclosures, and a vertical bank slope automatic liftable river water body filtering device is arranged between the soft enclosures. According to the system disclosed by the utility model, through the innovative design of the filter cloth and the application of a plurality of soft enclosures, step-by-step filtration and regional division of a water body are realized, and the filtration efficiency is improved. Meanwhile, the system adopts a hydrophilic high polymer material and a super-hydrophobic high polymer material, and combines biological filtration and physical filtration, so that the water quality is effectively purified. The system is further provided with an in-situ functional treatment area, and the water treatment efficiency and effect are improved by planting aquatic plants and adding functional filler.

Mobile or stationary air filter (L) or room fan (RL) according to Figure 1, comprising an outer wall (5), a (2) for generating an airflow (3) which is guided through an air filter material (1.1), an air inlet (2.1) and an air outlet (2.2), wherein the air filter material (1.1) contains poly(styrenesulfonic acid) (sulfonic acid biocide) (1.3) cross-linked with divinylbenzene and / or an acidic salt (1.3.1) (sulfonic acid biocide salt) of the sulfonic acid biocide (1.3) with biocidal cations, wherein the sulfonic acid biocide (1.3) and / or sulfonic acid biocide salt (1.3.1)(i) are positively and / or materially bonded to and / or in inert carriers and, in the fixed state, are in direct contact with carrier materials (1.1.7) on and / or in which biocidal Metal microparticles of a mean particle size d50 of 0.1 µm to <1,000 µm are fixed, and / or (ii) with carrier materials (1.1.7) on and / or in which biocidal metal microparticles of a mean particle size d50 of 0.1 µm to <1.000 µm are fixed, are mixed; its use and methods for the production and environmentally friendly disposal of air filter materials (1.1).

The invention belongs to the technical field of exhaust valves, and particularly relates to a composite exhaust valve with an integrated buffering and filtering assembly, which comprises a shell, a supporting block is fixedly arranged at one end of the shell, an air inlet head is fixedly arranged on the supporting block, a cavity is formed in the supporting block, a concave groove is formed in the cavity, and a sealing strip is arranged at the top of the concave groove. Cylinders are connected to the bottom of the concave groove in an array mode, a connecting rod is fixedly arranged at the bottom of the concave groove, a bottom plate is fixedly connected to the bottom end of the connecting rod, and a buffering mechanism is arranged in the cavity. According to the composite exhaust valve with the integrated buffering and filtering assembly, by arranging the filter cylinder and the baffle, efficient buffering and filtering treatment can be conducted on conveyed air pressure, stable operation of pneumatic equipment is guaranteed, the conveyed air pressure enters the cavity after being filtered through the filter cylinder, impurities such as particles in an air source can be effectively intercepted, and the effective circulation section of compressed air can be changed by adjusting the angle of the baffle; the narrower the circulation space is, the slower the airflow speed is, throttling buffering is achieved, and the working stability of the exhaust valve is guaranteed.

The invention discloses an intelligent treatment method for glass dust, dust removal equipment, a medium and a program product, and relates to the technical field of industrial dust treatment. Through matching based on the process parameter data of the target to-be-crushed glass and the sensing data of the dust production unit, the current production event can be accurately identified. The static pressure difference value is compared with the preset ash removal trigger threshold value, and the appropriate target ash removal strategy is selected from the preset candidate ash removal strategy set in combination with the current production event, so that the selection of the ash removal strategy is more targeted. According to the dynamic strategy selection mechanism based on real-time data, the problem of excessive ash removal caused by adopting a unified ash removal standard in the traditional technology is avoided, and the fatigue loss of the filter bag fabric is reduced.

The invention provides a method and system for separating and washing red mud in aluminum oxide production, and the method comprises the following steps: pretreating red mud slurry to improve the filtering performance of the red mud slurry; filtering the pretreated red mud slurry under set filtering conditions to form a red mud filter cake; in the filtering process, when the thickness of the dehydrated red mud filter cake reaches a set thickness, dehydrating the red mud filter cake so as to reduce the moisture content of the dehydrated red mud filter cake; performing multi-stage countercurrent washing on the dehydrated red mud filter cake to obtain a countercurrent washing solution; and carrying out purification treatment and concentration treatment on the countercurrent washing liquid, and returning the countercurrent washing liquid subjected to purification treatment and concentration treatment to the multi-stage countercurrent washing step as a washing liquid for cyclic utilization. The problem that the resource recycling rate is low in the red mud separating and washing process in aluminum oxide production is effectively solved.

The invention relates to a filter screen and a preparation method and application thereof, and belongs to the technical field of filtering equipment, the filter screen comprises a hydrophobic enhancement layer, a pre-filtering layer and a core filtering layer which are stacked in sequence; the hydrophobic reinforcing layer comprises the following components: metal fibers; the pre-filtering layer is prepared from the following components: basalt fibers; and the core filter layer comprises the following components: polytetrafluoroethylene fibers and polyether-ether-ketone fibers. By designing the structure of the filter screen, the filter screen which can stably work in a high-temperature environment, has excellent hydrophobic performance and filtering efficiency and is controllable in manufacturing cost is obtained.

The utility model discloses an anti-blocking regulating valve which comprises a valve body, a valve cover installed on the valve body, a support installed on the valve cover, an actuator installed on the support and a valve rod connected with the actuator. The bottom of the valve body is detachably provided with a bottom cover and a filter cartridge arranged between the bottom cover and the valve body; the bottom cover is provided with a plurality of flushing holes, a flushing chute communicated with the flushing holes and a cleaning discharge port communicated with the cleaning discharge port. Impurities in liquid can be filtered by arranging the filter cartridge, and blockage caused by accumulation of the impurities in the liquid flowing to the valve element is prevented, so that normal use of the valve is guaranteed; impurities generated after the interior of the valve body and the filter cartridge are flushed can flow into the flushing chute through the flushing hole, and uniformly flow to the cleaning discharge port through guiding in the flushing chute to be uniformly discharged, so that the interior of the valve can be flushed without disassembling the valve, and the flushing convenience is improved.

The utility model provides a water purifier. The water purifier comprises a filter element assembly, a shell, a conductivity sensor and a turbidity sensor, the filter element assembly is arranged in the shell, and a filter cavity is formed between the filter element assembly and the shell; the shell is provided with a water inlet and a water outlet, the water inlet is communicated with the filter chamber, a filter inlet of the filter element assembly is communicated with the filter chamber, and a filter outlet of the filter element assembly is communicated with the water outlet; the conductivity sensor is arranged at the water inlet, the turbidity sensor is arranged on the shell or the filter element assembly, and the detection end of the turbidity sensor is used for detecting the quality of raw water in the filter cavity. According to the utility model, through dual monitoring of the conductivity sensor and the turbidity sensor, the attenuation slope is obtained by fitting conductivity and turbidity data, and the attenuation slope is compared with a filter element service life attenuation slope database, so that the service life of the filter element can be predicted more accurately.

The utility model relates to a device for continuously reciprocating multi-position folding and filter-pressing sludge by using filter cloth. The device comprises a feeding system, a pre-pressing system, a folding system, a filter-pressing system and a cleaning system, the feeding system, the pre-pressing system and the folding system are distributed from inside to outside to form at least two sludge pre-treatment systems, and every two sludge pre-treatment systems are symmetrically distributed to form a folding unit; the two sludge pre-treatment systems of each folding unit are connected through continuous filter cloth, the pre-pressing system and the folding system of each sludge pre-treatment system are both connected with the filter cloth, and the feeding system is located above the filter cloth; the two filter pressing systems correspond to the two folding systems of the folding unit respectively; the cleaning system can be used for continuously cleaning the filter cloth. The device disclosed by the utility model can realize the process of continuously folding the filter cloth back and forth in two folding systems and continuously treating sludge, and belongs to the technical field of dehydration of sludge, coal slime, food and the like.

Disclosed is a sediment-proof self-cleaning butterfly valve, comprising a butterfly valve body and a filtering apparatus. The filtering apparatus comprises a pressure adjustment chamber and a filtering chamber. The pressure adjustment chamber comprises a pressure adjustment pipe, a pressure adjustment assembly slidably connected to the pressure adjustment pipe, a rotating assembly connected to the pressure adjustment assembly, and an assistive support. The filtering chamber comprises an apparatus chamber and a second docking chamber perpendicular to the axis of the apparatus chamber. A filtering assembly and a cleaning assembly are provided in the apparatus chamber. A turbine apparatus is connected to the cleaning assembly, and the turbine apparatus drives the cleaning assembly to rotate. According to the present invention, it is possible to adapt to the pressure and flow of passing water, control the size of a water inlet of the first docking chamber, and ensure a sufficient pushing force of water when pushing the turbine apparatus to rotate. Thus, it is possible to automatically clean sediment from the filtering apparatus, ensure the filtering effect, and provide a more environment-friendly and energy-saving effect.

The invention discloses a surface layer filtering type liquid purification method, which relates to the technical field of liquid purification, and comprises the following steps: taking instantaneous flow direction change of liquid and a particle return path as input, and generating a particle reunion accumulation potential map by constructing a particle distribution density prediction function and a disturbance intensity function; determining whether there is a particle reunion accumulation risk in the surface layer area; under the condition of judging that the particle reunion accumulation risk exists, inputting a high-density region in the particle reunion accumulation potential map, the disturbance duration time and the particle return density into a fusion type residual error recursive network structure, and generating a particle reunion accumulation risk judgment score; and comparing the particle reunion accumulation risk discrimination score with a preset response critical value. According to the method, the problem that short-time particle return is difficult to identify in surface filtering is solved, and accurate prediction and dynamic regulation and control of the particle reunion accumulation risk are realized.

The invention relates to the technical field of automobile air purification, and particularly discloses a filtering material, a preparation method of the filtering material and a novel automobile air conditioner multi-effect catalytic formaldehyde removal filter. The filtering material comprises a PET (Polyethylene Terephthalate) supporting layer, a gas filtering layer and a PP (Polypropylene) electrostatic filtering layer which are arranged in sequence, the gas filtering layer is prepared from the following raw materials in parts by weight: 30 to 90 parts of activated carbon and 10 to 70 parts of manganese catalyst. The gas filtering layer composed of the activated carbon and the manganese catalyst is matched with the filtering material composed of the PET supporting layer and the PP electrostatic filtering layer, four gases of n-butane, methylbenzene, sulfur dioxide and nitrogen dioxide can be adsorbed, the manganese catalyst degrades formaldehyde at normal temperature, meanwhile, the reaction on the formaldehyde is a catalytic reaction, and the environment-friendly effect is achieved. Therefore, the filter material disclosed by the invention also has longer service life, so that a filter made of the filter material has a better formaldehyde removal effect and longer service life.

The utility model discloses a full-automatic operation control system for filter pressing, water washing and squeezing of a diaphragm filter press, which is characterized in that an inlet of a slurry liquid filter pressing pump is connected with a to-be-pressed filtrate storage tank, an outlet of the slurry liquid filter pressing pump is connected with a liquid inlet of the filter press through a liquid inlet valve V1, and an inlet of an on-machine water washing filter pressing pump is connected with an on-machine washing water storage tank; the outlet is connected with the water inlet of the filter press through a water inlet valve V3; an inlet of the squeezing water delivery pump is connected with the squeezing water tank, an outlet of the squeezing water delivery pump is connected with the filter press, the front end of the pulp filter press pump and the front end of the squeezing water delivery pump are respectively provided with the frequency converter, and the pulp filter press pump, the filter press, the on-machine washing filter press pump, the squeezing water delivery pump, the liquid inlet valve V1 and the water inlet valve V3 are respectively connected into the control cabinet. And the control cabinet is used for controlling the starting, stopping and switching of the slurry filter press pump, the filter press, the on-machine washing filter press pump, the squeezed water delivery pump, the liquid inlet valve V1 and the water inlet valve V3. According to the utility model, full-automatic start-stop switching control of filter pressing, water washing and squeezing of the diaphragm filter press in hydrometallurgy can be realized.

The application discloses a kind of synchronous denitrification and phosphorus removal light materials and its preparation and application method, belong to environmental functional materials and sewage treatment technical field.The application is obtained by fully melting and dispersing sulfur and iron-based component, and the iron-based component is a mixture of pyrite and calcium-magnesium carbonate.The molten mixture is foamed to form a synchronous denitrification and phosphorus removal light material.The synchronous denitrification and phosphorus removal light material has high porosity, large specific surface area, light weight and high reactivity.The light material is used as a microbial carrier and an electron donor for biochemical reactions, and is applied to fixed bed, fluidized bed and other reactors for sewage treatment.The light material has good microbial adhesion performance, high denitrification rate and good phosphorus removal effect.

Materials (1) free of heavy metals, except silver and iron, in particular filter and building materials (1) according to Figure 1 for the sequestration of carbon dioxide by mineralization, comprising a solid inorganic material (1.1) comprising or consisting of alkaline earth oxides and / or hydroxides (1.1.1) or a solid inorganic mixture (1.1) comprising or consisting of alkaline earth oxides and / or hydroxides (1.1.1) and a further solid inorganic component (1.1.2) which forms sparingly soluble carbonates with carbon dioxide and / or which adsorbs carbon dioxide, wherein the solid inorganic material (1.1) is on and / or in a support material (2) selected from the group consisting of gas-permeable biochars (2.1) and gas-permeable, biodegradable solids (2.2), fixed using an inorganic or biodegradable liquid adhesive (3) or hot melt adhesive (3) or biodegradable double-sided adhesive tape (3) based on a biodegradable solid (2.2), or in bulk (1.1) fixed by a gas-permeable container (4) made of solids (2.2); filters (5) and filter devices (6) containing filter materials (1) and components (19) that can be made from building materials (1); methods for their manufacture and disposal and their use.

The utility model belongs to the technical field of sludge treatment and disposal, and relates to a filter cloth folding compression bar device for sludge filter-pressing dehydration, which comprises a rotating rod, a rotating rod gear, a fixed outer circular tube, a folding rod, a motor and a motor gear, the rotating rod is vertically inserted into the fixed outer circular tube and is rotatably connected with the fixed outer circular tube, and the folding rod is connected with the motor gear. One end of the folding rod is fixed on the rotating rod and is vertically connected with the rotating rod; the rotating rod gear is fixedly arranged on the rotating rod in a sleeving mode, the rotating rod gear is connected with the motor gear, and the motor gear is connected with the motor so as to drive the rotating rod gear and the rotating rod to rotate; the fixed outer circular pipe is arranged on the side face of the filter cloth in the moving direction, and the arrangement height of the folding rod is matched with the height of the filter cloth, so that the folding rod is pressed above the filter cloth when rotating to the position perpendicular to the moving direction of the filter cloth.

The utility model relates to a back flushing energy dissipation device of a filter press, the tail end of a back flushing sludge backflow main pipe is connected with an exhaust branch pipe and a back flushing sludge backflow secondary pipe through a three-way pipe, the exhaust branch pipe extends upwards and is provided with an exhaust branch special valve, and the back flushing sludge backflow secondary pipe extends downwards and is provided with an exhaust branch special valve. An energy dissipation device is arranged at the lower end of the back flushing sludge backflow secondary pipe, a porous water leakage grid groove is vertically arranged below the energy dissipation device, and a plurality of groove body fixing tie bars are uniformly arranged on the circumference below the energy dissipation device; the energy dissipation device comprises an energy dissipation cover body II and an energy dissipation cover body I which are integrally formed, the energy dissipation cover body II is in a circular tube shape, the upper end of the energy dissipation cover body II is in butt joint with the blowback sludge backflow secondary pipe, the lower end of the energy dissipation cover body II is connected with the energy dissipation cover body II, the energy dissipation cover body I is in a flaring horn shape, and the flaring end of the energy dissipation cover body I faces downwards. According to the utility model, through continuous multi-time energy dissipation, the back-flushing speed of sludge and sewage is reduced, and splashing of the sludge and sewage is reduced.

The application discloses a medical natural antibacterial and antiviral mildew-proof wet non-woven fabric and a preparation method and application thereof, and belongs to the technical field of medical polymer materials and textiles. The non-woven fabric is prepared from the following raw materials: polyethylene terephthalate long fibers, polyethylene terephthalate short fibers, vinylon fibers and natural antibacterial and antiviral ultraviolet slow-release glue solution. The non-woven fabric is endowed with natural and non-toxic antibacterial and antiviral effects by using the extract of Chinese herbal medicine effective components. Meanwhile, the mechanical properties and the antibacterial and antiviral capacity of the non-woven fabric can be effectively improved by adding nano materials with far infrared function after surface modification to prepare high-efficiency natural antibacterial and antiviral ultraviolet slow-release microcapsule glue solution. The method improves the added value and application field of the wet non-woven fabric and is convenient for large-scale processing and production. The prepared wet non-woven fabric has excellent performance indexes, good air permeability and an antibacterial and antiviral efficiency of 99.99%.

The invention relates to a method for removing a chemical substance from human excreta, such as faeces and urine, comprising the following steps of: providing a toilet for a person from whose excreta the chemical substance must be removed; releasably connecting a filtering device to the toilet, wherein the filtering device comprises at least one removable cartridge with a filter; transporting the excreta by means of a transport screw from the toilet toward the filter in the cartridge, wherein pressure is exerted on the excreta by means of a plunger; filtering the chemical substance out of the excreta in situ using the filtering device; periodically replacing the at least one cartridge; and processing the replaced cartridge. The invention also relates to a filtering device for application in this method, and a cartridge for use in such a filtering device.

A cooling apparatus and a radiation apparatus using same. The cooling apparatus (100) can be used for cooling an X-ray source (200) in the radiation apparatus. The cooling apparatus (100) comprises: a structural frame (110); a heat dissipation device (120), installed inside the structural frame (110), the heat dissipation device (120) being configured to form a heat dissipation airflow passing therethrough; and a cooling unit (130), installed inside the structural frame (110) independently of the heat dissipation device (120), and located in a region through which the heat dissipation airflow flows; wherein the cooling unit (130) is configured to provide a cooling medium to flow through the X-ray source (200) for heat exchange, and the heat dissipation device (120) is further configured to communicate with the cooling unit (130) to dissipate heat from the cooling medium entering the interior of the heat dissipation device (120).

The utility model belongs to the technical field of filtering separation, and particularly relates to a filtering regulating valve and a filtering bottle, which comprise a valve body, two ends of the valve body are respectively connected with a water inlet connector and a water outlet connector, a control cavity communicated with the water inlet connector is formed in the valve body, and a first water inlet and a second water inlet are respectively arranged on the lower end face of the control cavity. A control cavity is formed in the valve body, a valve element assembly is arranged in the control cavity so as to control the opening size of the first water inlet and the opening size of the second water inlet, a valve bottom cover is installed on the lower end face of the valve body, and a purified water flow channel communicated with the first water inlet and a water inlet flow channel communicated with the second water inlet are formed in the valve bottom cover. In the actual using process, the opening sizes of the first water inlet and the second water inlet can be controlled through the valve element assembly, so that the proportion of all filtered water to part filtered water is adjusted, and stable outlet water quality can be achieved according to different local water quality or different requirements of water sources.

The invention provides an aerogel film with a continuous gradient pore structure and a preparation method and application thereof.The preparation method comprises the steps that a pre-crosslinking solution containing a polymer nanofiber suspension, a sodium alginate solution, a polyethyleneimine aqueous solution and a crosslinking agent is sprayed to a temperature-conducting substrate with the initial temperature ranging from-20 DEG C to-15 DEG C at high pressure; and freeze-drying to obtain the aerogel film with the continuous gradient pore structure. The aperture of the aerogel film is gradually increased from bottom to top, and the range of the aperture is mainly 1-110 [mu] m. The aerogel film is placed in a filter membrane clamp, so that a solution to be filtered passes through the aerogel film according to the sequence of'macropore-mesopore-micropore ', the aerogel film is used for intercepting and recycling particles with different sizes, such as micro-plastics, and high water flux and high rejection rate are both considered. The pore size of the aerogel film can be changed by adjusting the temperature of the temperature-conducting substrate; the prepared aerogel film improves the trade-off effect in the existing filtration separation technology, and has a wide market prospect.

The invention discloses a blockage prediction and alarm system for an oil absorption filter, and relates to the technical field of prediction and alarm, the system comprises a data acquisition module, a data processing module, a blockage quantification module and a prediction and alarm module, the data acquisition module periodically acquires the running state data of the filter; the data processing module adopts a Pauta criterion to eliminate abnormal data, calculates a unit flow pressure difference and a pressure difference change rate, and eliminates oil temperature viscosity interference through a viscosity-temperature characteristic compensation model to obtain a standard pressure difference; the blockage quantification module obtains an ideal pressure difference through a clean filter element baseline model, calculates an original blockage coefficient, and corrects through a time domain residual fusion mechanism to obtain a residual calibration blockage coefficient; the prediction and alarm module constructs a blockage time sequence prediction model based on the long-short-term memory network, generates a blockage coefficient prediction value in the next acquisition period to decide whether to trigger sound-light alarm, and realizes the preposed sensing and alarm of the blockage risk of the oil absorption filter.

The ball valve comprises a valve body assembly, a valve ball and a filter, the valve body assembly is provided with a first connector and a second connector, and the valve ball is rotationally arranged in the valve body assembly and can separate or communicate the first connector and the second connector; the number of the filter is one, and one filter is connected to the first interface; or the number of the filters is configured to be two, and the two filters are connected to the first connector and the second connector respectively. According to the ball valve provided by the invention, the filter is integrated on the ball valve, so that the ball valve has a filtering function, parts of the ball valve are simplified, and the cost of the ball valve is reduced.

The utility model discloses a liquid level floating dirt cleaning base station and a liquid level cleaning system, the liquid level floating dirt cleaning base station comprises a machine body, a power part and a filtering piece, the machine body forms a base station inlet, a base station outlet and a base station flow channel; at least part of the base station inlet is exposed on the liquid level of the pool, and the included angle between the orientation of the base station outlet and the orientation of the base station inlet is smaller than 90 degrees; or the to-be-filled pool wall and / or liquid level floating dirt cleaning base station forms a reflecting surface on one side, far away from the base station inlet, of the base station outlet. According to the utility model, enough liquid level difference can be formed at the base station inlet to drive floating dirt to enter the base station flow channel; the water flow discharged outwards from the base station outlet forms enough water flow pressure to drive the floating dirt to flow towards the base station inlet, so that the floating dirt can enter the base station inlet more smoothly and quickly.