31results about How to "Few supporting facilities" patented technology

The invention discloses an integrated deep domestic sewage treatment facility which comprises a tank body, and an anoxic biochemical region, an aerobic biochemical region and an anaerobic biochemical region which are respectively distributed on the left, in the middle and on the right of the cross section of the tank body, wherein the anaerobic biochemical region and the aerobic biochemical region are communicated with each other only through the bottoms; the top liquid level of the aerobic biochemical region is higher than the top liquid level of the anoxic biochemical region; the top of the aerobic biochemical region is provided with a water outlet pipe extending into the aerobic biochemical region, and an overflow weir communicated with the anoxic biochemical region; the upper part liquid level of the anoxic biochemical region is higher than the upper part liquid level of the anaerobic biochemical region; the bottom of the anoxic biochemical region is communicated with the upper part of the anaerobic biochemical region through a gravity pipeline; the tank body is provided with a water inlet pipe communicated with the anaerobic biochemical region; the bottom of the aerobic biochemical region is provided with an aerator; the top of the aerobic biochemical region is provided with a biochemical water outlet and a precipitation tank water inlet pipe which are communicated to a precipitation tank; the precipitation tank is communicated with a sand filter tank through a sand filtration lifting water pump mechanism; and a back flush dynamic drift sand filter is arranged in the sand filter tank. The invention also discloses a sewage treatment method using the facility.

The invention provides a storage and emergency supply device and method for a standby instrument gas source. The device comprises a storage and gasification device, a nitrogen making machine and a buffer tank. The storage and gasification device comprises a liquid nitrogen storage tank, a control valve unit and a vaporizer. The liquid nitrogen storage tank, the control valve unit and the vaporizer are sequentially connected in series through a pipeline. Liquid nitrogen in the liquid nitrogen storage tank is input to the vaporizer through the opened control valve unit, and the vaporizer is provided with an output port. The nitrogen making machine is provided with the inlet and a liquid nitrogen outlet. The liquid nitrogen outlet is connected with an inlet of the liquid nitrogen storage tank through a pipeline. The outlet of the buffer tank is connected with an external purified compressed air pipe network through a pipeline. The inlet of the buffer tank is connected with the output port of the vaporizer through a gas supply pipeline. The purified compressed air pipe network is provided with an air pressure sensor used for transmitting signals of air pressure values of the purified compressed air pipe network, and the control valve unit is controlled to be opened and closed through the output signals of the air pressure sensor. Compared with a conventional device and method, the investment is low, the occupied area is small and public and auxiliary consumption is avoided.

The invention relates to the technical field of polymer synthesis of phenolic resin, in particular to a refinement process of linear phenolic resin. The process comprises the steps as follows: (1) putting phenol in a reactor, adding oxalic acid, heating the reactor to 80-100 DEG C, and dropwise adding formalin to the reactor; (2) after dropwise adding the formalin, keeping the temperature, and adding oxalic acid until the pH of the mixed solution in the reactor is 4-6; (3) adding a solvent to the reactor continuously; (4) transferring all materials in the reactor into an extraction kettle, adding water to the extraction kettle for extraction, and separating a water phase; (5) repeating washing operation in step (4) until the pH value of the materials is 6-7 to obtain a crude phenolic resinsolution; (6) transferring the crude phenolic resin solution into a dehydration kettle, and removing residual water under negative pressure; (7) coarsely removing the solvent and small-molecular impurities out of the phenolic resin by a multistage falling-film evaporator, and refining the phenolic resin by a multistage wiped-film evaporator group; (8) granulating the phenolic resin by a drum granulator to obtain a high-purity linear phenolic resin product.

The invention relates to the technical field of materials, and particularly discloses a wood magnesium board and a preparation method thereof. The wood magnesium board is prepared from the following raw materials in percentage by weight: 20-40% of magnesium oxide, 10-20% of a magnesium sulfate solution, 20-30% of wood flour, 0.2-0.3% of metal oxide, 3-4% of non-metal oxide, 1-2% of inorganic salt, 0.5-1% of acid, 0.1-0.5% of a waterproof agent and 1-2% of a modifier. The invention also discloses a preparation method of the wood magnesium board. The preparation method comprises the following steps: accurately metering raw materials; and conducting mixing, stirring, dispersing, metering and paving under a dry process, conducting pre-pressing, carrying out secondary hot press molding, conducting demolding, cutting and sanding in a short time, drying frame pieces, finally finely cutting and sanding a finished product, and packaging and delivering a finished product. The production cost is effectively reduced, the production period is shortened, and the plate is high in strength, good in toughness, environment-friendly and non-toxic.

The invention discloses a cooling and purifying environment protection system for industrial waste gas emissions used for treating original heat smoke gas emitted in industrial production, and solves the problem that a large amount of dust particles, other impurities and high temperature emissions in the original heat smoke gas pollute the outdoor environment. The system is especially suitable for a coating production line of biomass burning machine equipment in the heat source part. The dust removal efficiency is up to 90% or higher, so that the environment protection emission standard is beneficial for being met. Meanwhile, after being subjected to dust removal spraying, the original heat smoke gas of 120-220 DEG C is emitted into the outdoor environment in the temperature range of 50-80 DEG C, so that the environment protection emission standard is beneficial for being met. The system can safely treat high-temperature, high-humidity and inflammable gas, and is low in cost, and remarkable in cooling and purifying effect, free from secondary pollution, lower in consumption of clean water and treatment capacity of wastewater, low in operation cost and resource loss, and simple and convenient to use and maintain.

The invention discloses a uniform material distribution type conveyor. The conveyor comprises: a bottomless feeding base groove; a material distributing device that comprises a transmission assembly and a movable sealing plate, wherein the movable sealing plate is movably arranged at the bottom of the feeding base groove through the transmission assembly and can form blocking at the bottom of thefeeding base groove, and therefore the discharging position of the bottom of the feeding base groove can be changed along with movement of the movable sealing plate; a feeding device that is located in the feeding base groove, wherein the moving direction of the movable sealing plate is the same as or opposite to the feeding direction of the feeding device; and a driving device that is used for driving the transmission assembly and the feeding device. The uniform material distribution type conveyor is used for sludge drying treatment, can receive solid materials at fixed points in a centralized manner, and uniformly conveys and arranges the materials in a sludge drying area.

The invention provides a comprehensive pipe gallery. The comprehensive pipe gallery comprises a pipeline, a pipeline rack pipe, a pipe gallery solid section and a pipe gallery direct burial section; the pipe gallery solid section is used for being arranged below a lane or a road intersection, the pipe gallery direct burial section is used for being arranged below a road green belt, and the pipe gallery solid section is in communication with the pipe gallery direct burial section; the pipeline and the pipeline rack pipe are laid on the pipe gallery solid section and the pipe gallery direct burial section; and the pipeline is connected to a pipeline valve, the pipeline rack pipe is connected to a pipeline connector, and the pipeline valve and the pipeline connector are arranged on the pipe gallery solid section. By means of the comprehensive pipe gallery, the technical problem that the construction cost of the comprehensive pipe gallery is high is solved.

The invention relates to a compound enzyme preparation capable of degrading kitchen waste and a preparation method and application of the compound enzyme preparation, and belongs to the technical field of garbage degradation. In accordance with the technical problem of efficiently treating the kitchen waste, the invention provides the compound enzyme preparation. The compound enzyme preparation isprepared from the following raw materials in parts by weight through fermentation of 6.53-9.12 parts of complex enzymes, 2.1-4.5 parts of zeolite powder, 0.56-1.04 parts of glucose and 8.3-10.9 partsof water, wherein the complex enzymes consist of a ginseng extract, cellulases, a naringin extract, a fructus momordicae extract, 0.83-0.91 part of a lime extract and an echinacea purpurea extract. For 100 kilograms of the kitchen waste at most, 27 kilograms of a mixture of the complex enzymes, rice husks and sawdust is added, operation is performed for 6-7h, foul odour can be directly removed, and organic compounds which are difficult to degrade are thoroughly degraded. The compound enzyme preparation can be used for degrading the kitchen waste.

The invention relates to a hoisted cement pipe outer wall brushing device comprising a rotating shaft, a rotating plate rotating around the rotating shaft, transverse supports fixedly installed on the rotating plate, longitudinal supports connected with the transverse supports and brush heads located on the longitudinal supports. A hoisting plate is installed above the rotating shaft; a tray used for bearing a cement pipe is placed below the hoisting plate; the bottoms of the longitudinal supports are provided with walking wheels; the walking wheels walk along the outer side wall of the tray to enable the longitudinal supports to rotate around the rotating shaft; the longitudinal supports are provided with lifting devices; and the brush heads are fixedly installed on the lifting devices and move up and down along the longitudinal supports through the lifting devices. Furthermore, the walking tracks of the brush heads are limited, and the problem of unstable rotation amplitude is effectively avoided. The lifting devices are arranged on the longitudinal supports, the brush heads can move up and down only through lifting of the lifting devices, then the upper outer wall and the lower outer wall of the cement pipe are brushed, supporting facilities are reduced, the efficiency is improved, and meanwhile the cost is reduced.

The invention relates to the technical field of sensors, in particular to a metal bar displacement speed sensor and a manufacturing method of a metal bar. The metal bar displacement speed sensor comprises a metal bar and a sensor, wherein mounting grooves are formed in the metal bar, and the mounting grooves are arranged in an equally-spaced manner in the length direction of the metal bar; each mounting groove is internally provided with a non-magnetic material; and the sensor is used for measuring the change of magnetic induction intensity for the linear motion of the metal bar. The manufacturing method of the metal bar comprises the following steps: forming a plurality of equally-spaced grooves in the metal bar; and enabling the grooves to be filled with the non-magnetic material. According to the metal bar displacement speed sensor and the manufacturing method of the metal bar provided by the invention, the equally-spaced mounting grooves are formed in the length direction of the metal bar, the mounting grooves are filled with the non-magnetic material, and the sensor is used for measuring the change of magnetic induction intensity for the linear motion of the metal bar, so thatthe supporting facilities are reduced, the space is saved, and the cost is reduced.