51results about How to "Filter completely" patented technology

A sterilization germ killing comfort mask, including mask layers held in the mask with a fixed belt. There is a sterilization filter layer, an electrostatic layer, a far-infrared superfine calcium layer, and a facial protection layer from outside to inside of mask body. In use, the outside air passes through a first sterilization filter layer, the preliminary filtration sterilization filter layer removes larger grains of dust and sterilization, electrostatic layer can filter through the sterilization of dust. Superfine calcium far-infrared layer removes acidic dust, bacteria and oily molecular adsorption, and neutralize the acid molecules, sterilization and decomposition of oily molecules absorbed. Facial protection layer strengthen filtering and protection of facial skin. This mask for the various molecules in air dust filtration and sterilization, sterilization dust removal ability, remove the inclusion of peculiar smell in the air at the same time, guarantee the quality of air that users breathe, and the user to wear comfortable, strong practicability.

The invention relates to screening and filtering equipment, in particular to vibration type screening and filtering equipment for petroleum exploitation. Thorough filtering can be carried out by the vibration type screening and filtering equipment, the vibration type screening and filtering equipment is high in filter efficiency, and petroleum wastage can be prevented during filtering. The vibration type screening and filtering equipment for petroleum exploitation comprises a bottom plate and the like. A left support is arranged on the left side of the top of the bottom plate, a right supportis arranged on the right side of the top of the bottom plate, a collecting tank is arranged in the middle of the top of the bottom plate, a driving mechanism is arranged on the upper portion of the right side of the left support, and a screening and filtering mechanism is arranged at the top of the right support. The vibration type screening and filtering equipment for petroleum exploitation has the advantages that the driving mechanism is used as a main power source, the screening and filtering mechanism can be driven by the driving mechanism to screen petroleum, the collecting tank can be driven by a movable mechanism to move in the left-right directions, accordingly, the petroleum can be collected, and wastage of the petroleum can be reduced; thorough filtering can be carried out by thevibration type screening and filtering equipment, the vibration type screening and filtering equipment is high in filter efficiency, and petroleum waste can be prevented during filtering.

The invention discloses a down feather storage device with the size being changed conveniently. The down feather storage device comprises a storage chamber main body, rotating vanes, a push plate andfixing screws. The upper portion of the storage chamber main body is provided with rotating rods. The upper portions of the rotating rods are fixedly provided with motors. The right sides of the motors are provided with a feeding opening, the upper portion of the feeding opening is provided with a rotating shaft, the upper portion of the rotating shaft is fixedly provided with a fixing cover. Thelower portions of the rotating vanes are provided with the rotating rods, heating wires are arranged below the rotating vanes, a sucking pipe is fixed below the heating wires, and the right side of the sucking pipe is provided with a draught fan. The right side of the draught fan is fixedly provided with a discharging opening, the left side of the discharging opening is provided with a fixing spring, the left side of the fixing spring is provided with a transverse plate, and a vibrator is arranged below the transverse plate. The down feather storage device with the size being changed conveniently is provided with a first storage chamber, a second storage chamber and a third storage chamber, and therefore the height and size of the whole device can be changed through the first storage chamber, the second storage chamber and the third storage chamber.

The invention discloses a centralized filtration and oil supply system for machine tool machining. The centralized filtration and oil supply system for machine tool machining comprises a waste oil pipeline connected with the outer portion of a machine tool. The waste oil pipeline is connected with a waste oil pump and a super-strong magnetic filter in sequence. The output end of the super-strong magnetic filter is connected with a multi-stage linkage backwashing self-cleaning filter and a super-strong magnetic separator correspondingly. The output end of the multi-stage linkage backwashing self-cleaning filter is connected with the super-strong magnetic separator and also connected with a crude oil pool. The output end of the super-strong magnetic separator is connected with the crude oil pool through a drum-type paper tape filter. The output end of the crude oil pool is connected with the oil inlet end of the machine tool through an oil scavenging pump. Compared with the prior art, a traditional working manner is changed; equipment investment is reduced through a centralized oil supply method; the occupied workshop area is small; artificial control is not needed; automatic oil supply, filtering and cooling are realized; automation is realized completely, and the centralized filtration and oil supply system is economical and friendly to environment.

The invention discloses an information filtering method and apparatus and belongs to the technical filed of internet. The method comprises the following steps: obtaining dynamic information and obtaining credit information of a user account issuing the dynamic information, wherein the credit information is used for representing credit of the user account; and according to the credit information, detecting whether the dynamic information meets filtering conditions, and when the dynamic information meets the filtering conditions, filtering the dynamic information. According to the invention, theproblem of incomplete filtering of spam due to limited keywords during information filtering through keyword matching is solved. Since a user account with higher credit has a quite low probability ofissuing spam, yet a user account with lower credit has a quite high probability of issuing spam under normal conditions, the spam is filtered in a more complete manner by filtering the dynamic information issued by the user account according to the credit information of the user account.

The invention discloses an environment-friendly electronic solid waste recovery system. The environment-friendly electronic solid waste recovery system comprises a base, wherein a screening box and alifting box are arranged at the top of the base, the bottom of the screening box and the bottom of the lifting box are fixedly connected to the top of the base, a filter plate is obliquely arranged inthe screening box, two first baffles are fixedly connected to the top of the filter plate, and two vibration motors are fixedly connected to the bottom of the filter plate. The environment-friendly electronic solid waste recovery system belongs to the technical field of environment-friendly equipment. When the filter plate is used for filtering, substances that cannot be filtered enter the lifting box through a second feed hopper and are not located above the filter plate anymore, so that filtering of subsequent substances is prevented from being affected; and meanwhile, the substances sliding away from the filter plate enter the screening box again through the first feed hopper to be filtered repeatedly, so that more comprehensive filtering is realized.

The invention discloses a filtering device for air purification equipment for metal processing. The filtering device comprises a bottom plate, a wet filtering box and a purification box; the four corners of the bottom of the wet filtering box are provided with stand columns; the center of the left side of the wet filtering box is provided with an air inflow pipe; the air inflow pipe is provided with an air feeder; a water tank is arranged at the top of the bottom plate and located below the wet filtering box; a motor is arranged on the left side of the water tank; a rotating shaft penetrating through the interior of the water tank is arranged at the output end of the motor; a water storage groove is arranged on the bottom side of the interior of the wet filtering box and located at the left end of a water pipe; a connecting pipe is arranged between the inner bottom of the water storage groove and the water tank; a circulating water pump is arranged on the connecting pipe; an exhaust pipe is arranged at the top of the purification box; and a gas detection sensor is arranged in the exhaust pipe. The filtering device has the advantages of being movable and recyclable, small size and simple structure; meanwhile, the harmful gas purification effect and efficiency are greatly improved through multi-stage purification, and practicability of the device is high.

A filter test strip to filter and test a specimen in liquid includes a test element and a specimen filter assembly which is located on the test element and includes a filter cotton holding layer, a filter cotton layer and a cotton bonding layer.

The filter cotton holding layer has a filter channel to allow the specimen in liquid to pass through. The filter cotton layer fills the filter channel. A gap is formed between the filter cotton holding layer and filter cotton layer. The cotton bonding layer is located below the filter cotton holding layer and bonded to the test element via an adhesive which masks the gap. Hence the specimen in liquid can be prevented from seeping out through the gap with passing through the filter cotton layer. Therefore, the specimen in liquid can fully be filtered by the filter cotton layer to enhance test accuracy.

The invention discloses a quartz sand alkaline leaching method purification process which comprises the following steps: alkaline leaching: carrying out stirring reaction on quartz sand minerals to be treated and a strong alkaline solution to obtain a solid-liquid mixture; filtering: filtering the solid-liquid mixture by using filtering equipment to obtain filter residues; leaching: leaching the filter residues with water until the pH value of the leaching water is 7-8 to obtain finished quartz sand; grading: screening out quartz sand with the size fraction smaller than 0.074 mm in the leached finished quartz sand; and flotation: carrying out flotation treatment on the quartz sand of which the size fraction is less than 0.074 mm, wherein the yield of the quartz sand with the size fraction smaller than 0.074 mm in the quartz sand mineral to be treated is 10% or below. The characteristic that the strong alkali solution does not have volatility is utilized, the influence on the human body and the environment is small during industrial application, and compared with strong acid, the danger is lower, the price is lower, and the production cost is lower.

The invention discloses a tail gas purifying device. The tail gas purifying device comprises a primary fine ceramic filter, a urea water spraying head group, a secondary coarse ceramic filter, a dust collection chamber and a dust discharging pipe; the primary fine ceramic filter is installed in a through hole in the upper part of the dust collection chamber; a tail gas outlet pipe is a right-angle elbow, and a horizontal section of the right-angle elbow is also provided with the urea water spraying head group and the secondary coarse ceramic filter. By adopting two-stage purification device, the secondary coarse ceramic filter is loaded with a catalyst for denitration reaction, the urea water spraying head group is arranged in front of the secondary coarse ceramic filter, before the tail gas reaches the secondary coarse ceramic filter, the urea water is adequately mixed with the tail gas, the tail gas discharged from a smoke discharging pipe is filtered by the primary fine ceramic filter so as to remove the dust, the dust is collected to be discharged, the tail gas after being primarily purified is mixed with the urea water through the urea water spraying head group, and the desulphurization and denitration reaction can be collectively carried out through the secondary coarse ceramic filter, so that the secondary purification effect of the tail gas can be realized.

The invention provides a disinfectant filtering and online cleaning sterilization system comprising a heat exchanger (4), a respirator (5), a preparation tank (6), an injection water sterilization filter (7), a disinfectant sterilization filter (8) and a CIP/SIP connecting pipe (11). According to the system, 1) due to the adoption of medium-assisted delivery, the disinfectant filtering speed can be increased, the disinfectant filtering dosage is higher, and the system is suitable for a workshop with relatively large sterile area; 2) due to the adoption of the medium-assisted delivery, a disinfectant can be more completely filtered, and the loss is lower; 3) CIP/SIP can be performed on line, so that the workload of offline sterilization realized by dismounting the system by operating staffis reduced, and the phenomenon of leakage easily caused by frequently dismounting the system can also be avoided; and 4) the system can be used for the workshop with high filtration requirement duringdisinfectant preparation and high disinfectant dosage.

The invention discloses an efficient environment-friendly fine filtering device. The device comprises a filter cylinder body, a water inlet, a water outlet and a filter element, wherein a longitudinal clapboard is arranged in the middle of the filter cylinder body, and a groove is arranged on the top of the clapboard; the water inlet is arranged under one side of the clapboard inside the filter cylinder body, and the water outlet is arranged above the other side of the clapboard inside the filter cylinder body; the filter element comprises a screen filter element and a filter element rod, the screen filter element comprises a water inlet screen filter element and a water outlet screen filter element, and the filter element rod comprises a water inlet filter element rod and a water outlet filter element rod; the water inlet screen filter element is arranged above the water inlet, and the water inlet filter element rod is arranged above the water inlet screen filter element; the water outlet screen filter element is arranged under the groove, and the water inlet filter element rod is arranged under the water outlet screen filter element. The efficient environment-friendly fine filtering device has the advantages of being simple in structure, convenient to operate, rapid in filtration, environment-friendly, hygienic, high in efficiency and complete in filtration.

The invention discloses a bean cleaning filter which comprises a cleaning box body. The cleaning box body is internally provided with a group of symmetrical first grooves. Baffles are clamped in the first grooves, each baffle passes through the cleaning box body and extends to the outside of a cleaning box, the left side of the baffle is provided with a primary filter box, the right side of the baffle is provided with a secondary cleaning box, the top of the primary filter box is provided with a feeding hopper, one end of the feeding hopper passes through the primary filter box and extends tothe inside of the primary filter box, the bottom of the primary filter box is provided with a second groove, the left side of the primary filter box is provided with a linear reciprocating motor, a water injection pipe is disposed on the left side of the primary filter box and located above the linear reciprocating motor, and one end of the water injection pipe passes through the primary filter box and extends to the inside of the primary filter box. The bean cleaning filter has the advantages that impurities can be completely filtered out and separated, the cleaning is clean, a filtering andcleaning structure is simple, and the bean cleaning filter is favorable for users' use and marketing.

The invention relates to a device for treating sewage in plateau areas. The device comprises a sewage discharging tank; the device is characterized in that a sewage inlet is formed on the sewage discharging tank; a first filtering device is connected with the sewage discharging tank through a pipeline; the first filtering device is connected with a sterilizing device through the pipeline; an ozonegenerator is connected with the bottom end of the sterilizing device through the pipeline; a heating layer is arranged on an inner wall of the sterilizing device; a heater located on the outer side of the sterilizing device is connected with the heating layer; a second filtering device is connected with the bottom end of the sterilizing device through the pipeline; an activated carbon filtrationlayer is arranged in the second filtering device; a water tank is connected with the bottom of the second filtering device through the pipeline; a descaling device is connected with the bottom of thesecond filtering device through the pipeline; the descaling device is connected with the sterilizing device through the pipeline. The device provided by the invention is capable of circularly treatingsewage in plateau areas and has an excellent effect and high efficiency.