58results about How to "Good purification function" patented technology

The invention discloses a buried type cellaring method for white spirit, which comprises the following steps: selecting a ceramic spirit jar with a storage capacity of 100 kilograms, soaking with high-quality spring water for 7 days, drying in the air, feeding the white spirit, covering, binding a jar cover with high-quality kraft paper, sealing with mud, and standing indoor to observe for two months; pulverizing 20wt% of traditional bamboo charcoals, 3wt% of sorghum stalks, 8wt% of rice straws, 3wt% of wheat straws, 3wt% of cornstalks, 2wt% of Artemisia argyi leaves, and 1wt% of Radix Glycyrrhizae, adding 60wt% of bamboo forest loam, adding water and stirring uniformly; digging a groove for spirit storage in a bamboo forest hillside, wherein the groove has a length of 15 meters, a width of 3 meters, and a depth of 3 meters; and laying the prepared bamboo charcoal mixed soil to a thickness of 30 centimeters at the bottom of the groove, putting the no-leakage spirit-jars that are kept for two months after feeding in the step 1 on the bamboo charcoal mixed soil one by one with a distance of 30 centimeters between the jars, filling and covering with the prepared bamboo charcoal mixedsoil till the thickness of the bamboo charcoal mixed soil on the spirit-jars is more than 1 meter, and burying for five years.

The invention discloses an apparatus for removing trace acidic gas in indoor air, and a method and an application thereof. The apparatus provided by the invention comprises a spray bed reaction system, an air power system and an absorption liquid circulating system, and the three systems are integrally connected, wherein the spray bed reaction system comprises a bed cylinder, the air power system comprises a fan, an air inlet pipe and an air outlet, and the absorption liquid circulating system comprises a liquid spray thrower, an absorption liquid circulating pipe, an absorption liquid storage tank and a submersible pump. After starting the fan and the submersible pump of the apparatus, air passes through cylinder chamber of the bed cylinder from bottom to top, and meanwhile contacts with the absorption liquid sprayed from top to bottom, so that the air is absorbed and purified. The apparatus for removing the trace acidic gas in the indoor air has advantages of compact structure, small volume, low noise, easy installation, low energy consumption and excellent purifying effect.

The present invention provides a needle-shaped ceramic body and needle-shaped ceramic catalyst body in which a case material is a high specific surface area porous cordierite body that is stable at high temperatures, and also provides methods of producing this needle-shaped ceramic body and needle-shaped ceramic catalyst body. The present invention relates to a needle-shaped ceramic body and needle-shaped ceramic catalyst body in which a base material is a high temperature-stable, high specific surface area porous cordierite body comprising a porous structure having a prescribed porosity and formed of a needle-shaped cordierite crystal phase and further relates to methods of producing this needle-shaped ceramic body and needle-shaped ceramic catalyst body, and by using porous cordierite constituted of needle-shaped crystals as a catalyst-supporting honeycomb structure, the present invention is able to inhibit sintering-induced reduction in the specific surface area. Since a honeycomb can be directly produced as the cordierite sinter itself, an inexpensive product can be provided through the simplifying the prior-art step of coating the interior of the honeycomb.

The invention provides an ecological softening structure of a rigid revetment. The ecological softening structure comprises a supporting frame arranged along a revetment base body. A mesh type grid is arranged in the supporting frame, a plurality of cells are formed, and an intercepting layer is arranged outside the supporting frame. Each cell is filled with planting matrixes. Terrestrial plants are planted in the zone above a water level. Emergent aquatic plants are planted in the underwater zone with the water depth smaller than 30 cm. Submerged plants are planted in the underwater zone with the water depth between 30 cm-100 cm. The ecological softening structure is not limited by riverway water depth and is not affected by levee crown back way arranging, the application range is wide, by reasonable matching of the terrestrial plants and the emergent aquatic plants, a beautiful revetment landscape is established, and meanwhile the purifying functions of the emergent aquatic plants and the submerged plants are used for purifying riverway water quality. The ecological softening structure has the advantages of being simple in structure, low in building cost, convenient to construct, easy to maintain and manage and the like, and great economy, practicability and wide applicability are achieved.

The invention discloses a BRGA (Biological Rotating Gradient Aeration) municipal wastewater treatment method which comprises the following steps of: pre-precipitating municipal wastewater in a pre-precipitating pool; arranging a selective efficient bioreactor in a front section of a gradient biochemical aeration tank to treat wastewater, and casting a microbial growth accelerant; performing gradient biochemical aeration treatment to wastewater in the gradient biochemical aeration tank; and precipitating treated wastewater in a precipitating pool. The BRGA municipal (domestic) wastewater treatment method provided by the invention is based on an advantaged principle of decomposing effective cultures of pollutants. When water inlet quality and condition of wastewater to be treated are changed, advantaged cultures under low temperature and low carbon nitrogen ratio still maintain efficient purifying function by moderately changing operating parameters of a main facility and casting the microbial growth accelerant in a targeted manner. The problem that TN of treated wastewater is hard to reach the standard by the existing municipal (domestic) wastewater treatment technology in the condition that water temperature is lower than 15 DEG C and carbon nitrogen ratio is lower than 4.

The invention relates to the field of medicinal fertilizers and provides an organic rice medicinal fertilizer and a preparation method thereof. The organic rice medicinal fertilizer is prepared from the following raw materials in part by weight: 1.5 to 3 parts of indigowoad root, 7 to 15 parts of tarragon, 7 to 15 parts of crotalaria mucronata, 2.5 to 6 parts of Chinese mugwort leaf, 7 to 15 parts of flagleaf and 35 to 65 parts of farm manure. The preparation method comprises the following steps: a) washing indigowoad root, tarragon, crotalaria mucronata, Chinese mugwort leaf and flagleaf in aqueous solution of NaCl according to a weight part ratio, drying in the air, performing primary squeezing, collecting residue and juice, boiling the residue in the aqueous solution of NaCl, collecting residue and juice again, mixing the juice with the juice obtained after primary squeezing; b) fully and uniformly mixing the farm nature and the residue, and composting; and c) covering and closing the compost with a plastic thin film till the compost matures. The organic soybean medicinal fertilizer realizes the change of waste material into valuable material and the combination of fertilizer and medicine and can supply nutritional elements required by soybeans.

The invention discloses a central air conditioning unit having the air purifying function and relates to the field of central air conditioning. The unit comprises a unit main body. An air inlet is formed in one end of the unit main body. A fresh air opening is formed in the other end, opposite to the air inlet, of the unit main body. An air cooling chamber and a fan chamber are sequentially formedbetween the air inlet and the fresh air opening. An air purifying chamber is formed between the air cooling chamber and the fan chamber. According to the central air conditioning unit, firstly, microparticulate and part of harmful gas in the air are physically absorbed and filtered out; then, residuary alkaline gas or acid gas in the air are removed through an aluminum oxide filter; reducibilityharmful gas such as formaldehyde is removed through a formaldehyde removing box; by means of the matching effect and comprehensive use of physical absorption and chemical decomposition absorption, the treating effect is good; air quality is effectively improved; and the unit benefits to the human body health.

The invention discloses a wet dust removal device of automobile tail gas. The wet dust removal device of the automobile tail gas comprises an automobile body and an exhaust pipe. A dust removal tank is arranged on the bottom of the back of the automobile body. A tank cover matched with the dust removal tank is arranged at the upper end of the dust removal tank. Water is filled in the dust removal tank. A first filtering material layer is arranged below the water surface in the dust removal tank, and an underwater air outlet pipe is arranged on the bottom of the dust removal tank, wherein the pipe wall of the air outlet pipe is provided with a plurality of vent holes. The exhaust pipe is communicated with the underwater air outlet pipe through a first connecting pipe. A second filtering material layer is arranged above the water surface in the dust removal tank, and an air suction pipe is arranged on the dust removal tank and above the second filtering material layer, wherein the pipe wall of the air suction pipe is provided with a plurality of air suction holes. A draught fan is arranged on the automobile body on one side of the dust removal tank, and an air inlet of the draught fan is communicated with the air suction pipe through a second connecting pipe. The dust removal tank can be dismantled, cleaned and added with water relative to the draught fan and the exhaust pipe, has a good purification function for the automobile tail gas, and the pollution to the atmosphere in a city from the tail gas of the automobile can be greatly reduced.

The invention relates to the field of medicinal fertilizers and provides an ecological medicinal fertilizer for rice and a preparation method of the ecological medicinal fertilizer. According to a formula, the fertilizer is prepared from the following raw materials in parts by weight: 2-3 parts of zanthoxylum bungeanum leaves, 1.5-3 parts of willow leaves, 10-25 parts of poplar leaves, 7-15 parts of Chinese parasol leaves, 2.5-6 parts of ailanthus altissima leaves and 5-10 parts of rice husks. The preparation method comprises the concrete steps of (a) cleaning the leaves in a NaCl water solution according to the weight part, and airing; (b) uniformly stirring the aired leaves and the rice husks, diluting 1 part of prepared vinegar yeast by using 100kg of cold boiled water, and then, uniformly spraying the vinegar yeast; (c) covering and sealing a compost by using a plastic film, and then, wrapping the compost by using rice straws until the compost is fermented to be mature; and (d) preparing the vinegar yeast, namely, culturing 1 part of the vinegar yeast in a culture medium prepared according to the formula: 3-4ml of edible alcohol, 0.4g of glucose, 1g of yeast extracts, 1.5g of calcium carbonate, 1.5g of agar and 100g of water at the temperature of 30 DEG C for 2 days, and then, storing in a refrigerator (4 DEG C). By using the ecological medicinal fertilizer for rice, the aims of turning waste into wealth and combining a fertilizer and a medicine are achieved, and nutritive elements required by growth of rice can be comprehensively provided.

The filter material for eliminating cigarette smoke is formed from tourmaline microcrystal, zeolite, far infrared zirconia powder and titania powder according to the mixing ratio of 60-65%:10-15%:10-15% and 15-20%. Its preparation process is as follows: firstly, cleaning tourmaline and zeolite respectively, drying and pulverizing to obtain tourmaline microcrystal and zeolite, mixing them according to the above-mentioned ratio, ball-grinding them to 100-120 meshes, heating at 450-500 deg.c for 3-4 hr, finally mixing the above-mentioned powder material, with plastics and foaming agent according to the ratio of 3:1:0.1, foaming so as to obtain the invented filter material microporous sponge body which not only can be used for elimianting cigarette smoke and cleaning air, but also can release lots of negative ions.

The invention discloses a control formula and an enforcement method aiming at enteromorpha harm during polyculture of shrimp, crab and shellfish. The control formula aiming at enteromorpha harm during polyculture of shrimp, crab and shellfish comprises the following compositions by weight: 70%-95% of water-benefiting live baceria, 2%-25% of a composite algae source, and 0.1%-5% of vibrio invincible opponent, wherein the composite algae source is a mixture of an algae culturing agent named as Yuzaoyuan and an algae flourishing agent named as Zaowang with the ratio rato of 1:2-2:1. The invention also discloses a control method aiming at enteromorpha harm during polyculture of shrimp, crab and shellfish. Therefore, the technical scheme is capable of effectively controlling enteromorpha, reducing mortality of shrimp, crab and shellfish and enhancing life vitality of shrimp, crab and shellfish, and also helps to solve the pond water quality and sediment eutrophication problems, inhibit enteromorpha growth, eliminate multiple harmful bacteria in shrimp, crab and shellfish, and reduce content of harmful bacteria in water.

The invention relates to an aerosol particle treatment method and aerosol particle treatment equipment. The aerosol particle treatment method comprises the following steps: firstly, performing atomization treatment on aerosol particles in gas; secondly, intercepting and collecting the atomized aerosol particles, and simultaneously, separating the atomized aerosol particles into fine particles; andfinally, performing physical purification treatment on the fine aerosol particles so as to realize purification of the aerosol particles in gas. The aerosol particle treatment equipment can be simplyassembled and used according to environmental requirements, is high in mounting efficiency and wide in application range, can more thoroughly clear the purified and atomized aerosol particles, has amore obvious effect on purifying gas (waste gas), and better adapts to marketing promotion.

The invention discloses a system for treating fluoride-containing wastewater. The system comprises a regulation and emergency pool. A water outlet of the regulation and emergency pool is communicated with a water inlet of a primary reaction tank, the water outlet end of the primary reaction tank is communicated with the water inlet end of a primary sedimentation tank, the primary reaction tank is provided with a primary stirring mechanism, a fluoride-removing agent is placed in the primary reaction tank, and the bottom of the primary sedimentation tank is provided with a primary sludge outlet. The water outlet end of the upper portion of the primary sedimentation tank is communicated with a water inlet of a secondary reaction tank, and the water outlet end of the upper portion of a secondary sedimentation tank is communicated with an intermediate water tank. The primary sludge outlet and a secondary sludge outlet are communicated with a sludge tank, and the sludge tank is communicated with a sludge dehydrator. By placing the fluoride-removing agent into the primary reaction tank, fluorine ions in the wastewater can react and precipitate well and are removed in the primary sedimentation tank, floculation adsorption sedimentation is performed in the secondary reaction tank and the secondary sedimentation tank, other pollutants are removed, and a good purification function is achieved.

The invention belongs to the field of domestic air purification, and particularly relates to a domestic air purification device. The domestic air purification device comprises an air purification unit, a humidified air exhaust unit and a dry air exhaust unit; the air purification unit comprises a box capable of storing water and a heating element capable of heating water in the box to enable the water to evaporate, an air inlet is formed in the box, an air inlet of the humidified air exhaust unit is communicated with the air purification unit, an air outlet of the humidified air exhaust unit is communicated with the outside, an air inlet of the dry air exhaust unit is communicated with the air purification unit, and an air outlet of the dry air exhaust unit is communicated with the outside; and in addition, a filter net A capable of absorbing water is arranged at the air outlet of the dry air exhaust unit. By means of the domestic air purification device of the structure, the air humidification function and the better purification function are achieved.

The invention relates to a purification type automobile silencer which comprises a shell, wherein the shell is provided with an air inlet pipe and an air outlet pipe; the air inlet pipe comprises an S-shaped air inlet elbow and a straight air inlet pipe; the straight air inlet pipe is partitioned into a first straight air inlet pipe and a second straight air inlet pipe by a partition board; the number of silencing holes in the second straight air inlet pipe is twice of that of silencing holes in the first straight air inlet pipe; the air outlet pipe comprises an S-shaped air outlet elbow and a straight air outlet pipe; at least two layers of filter screens are arranged in the straight air outlet pipe; and a solid catalyst is filled between the two layers of filter screens. The purification type automobile silencer improves the silencing and noise reduction effects to enable the wavelength range of noise elimination to be wider and the frequency band to be wider, improves the comfort of a finished automobile and has a better automobile emission purification function to greatly reduce pollution of city atmosphere caused by automobile exhaust.

The invention discloses a decorative painting and comprehensive air processing purifier device, which comprises a decorative painting, a slide rail and an air purifier, wherein lead rails are fixed on a wall through screws, the air purifier are installed between two lead rails, two ends of the decorative painting are respectively embedded into a slide groove on each lead rail so as to be connected with the lead rails, and the decorative painting covers outside the air purifier. The surface on the front end of the air purifier is provided with an air outlet, the side surface on the front end of the air purifier is provided with a plurality of press buttons, and the upper side and the lower side on the front end of the air purifier are respectively provided with an upper air inlet and a lower air inlet. According to the invention, the decorative painting which can slide in two directions is arranged outside the air purifier, so that the air purifier is prevented from being exposed to influence the indoor attractiveness, a decoration function and a dustproof function can be achieved, and the device is convenient to use. The decorative painting and comprehensive air processing purifier device is a special household product, which is obtained by combining a comprehensive air processor and a featured structural painting and has the advantages of excellent purification function, good decoration property and novel design.

The invention discloses a soft water purification machine, relating to a drinking water terminal treatment device. In order to make up the defect that the existing domestic soft water machine only has a softening function but not a drinking water deep purification function. The invention aims to solve the technical problem of providing a drinking water terminal treatment device with moderate flow, low cost, convenient use and good softening and purifying functions. The soft water purification machine adopts the technical scheme that the system comprises a host, wherein the host comprises a three-circulation multiple-path control valve and a material filtering bucket; a water purification system formed by connecting various different water purification media in series is installed in the material filtering bucket; the water purification system comprises a food-grade sodium ion exchanger; in addition, the soft water purification machine also comprises an external brine tank; the brine tank is arranged on the position higher than the water inlet and the drain outlet of the three-circulation multiple-path control valve of the host; and the water outlet on the lower end of the brine tank is communicated with the water inlet of the three-circulation multiple-path control valve via a ball valve.

Disclosed is an air conditioner for more quickly and effectively purifying interior air, including a cabinet forming an exterior appearance of an indoor unit of the air conditioner, a base being provided at a lower part of the cabinet and having a lower suction opening on a front surface thereof for suctioning air, filters provided in a plurality of layers on top of the base for removing alien substance in air, and a filter frame having the filters being inserted and fixed thereto.

The invention provides a fish breeding sewage treatment device, which includes a box body, a sewage inlet is provided on the side of the box body, a blower is installed on the side wall of the box body directly above the sewage inlet, and a water outlet pipe is provided at the upper end of the other side wall of the box body. There is a control panel installed on the outer wall of the box at the bottom. Motors are evenly distributed on the upper end of the box. There is a filter screen inside the box. The filter screen is above the sewage inlet. mouth. By setting the filter screen inside the box, the purification of sewage can be accelerated. The sedimentation area set at the lower end of the filter screen can collect the impurities filtered by the filter screen and discharge them from the slag discharge port set at the bottom of the box body, so that the device has Automatic sewage discharge function, the set blower can infuse gas into the box, make the gas combine with the water in the box, and increase the dissolved oxygen in the water. This device has simple structure, easy operation, fast filtration, good sewage purification effect, and also It can increase the dissolved oxygen in water and is suitable for large-scale promotion.

The invention provides a granule sludge bed and biological film moving bed compound anaerobic reactor. The compound anaerobic reactor comprises an impulse effluent generator, an anaerobic reaction pool and a lateral separated gas, liquid and solid phase separator. The granule sludge bed and biological film moving bed combined compound anaerobic reactor can rapidly generate granule sludge with theexcellent property in an anaerobic area and filled with filler beds where biological films can grow by being attached and can move in a suspended mode, the anaerobic biochemical reaction efficiency isgreatly improved, the separated type gas, liquid and solid phase separation device is simple in structure, good in separation effect, stable to operate, easy and convenient to mount and construct, low in project construction cost and high in organic matter removing efficiency.

The invention belongs to the field of analytical chemistry, and relates to a detection method of chlorinated phenols in a textile through hollow fiber liquid-phase microextraction. The detection method comprises the steps of extracting a sample by using acetone, after concentrating an extracting solution to nearly dry, dissolving by using normal hexane to obtain a solvent, then taking a porous hollow fiber tube as a carrier of microextraction solvent, and transferring all extracted solvent into a high performance liquid chromatograph for subsequent assay determination. The detection method provided by the invention has the advantages that a hollow fiber tube liquid-phase microextraction method is adopted, namely, the hollow fiber tube is taken as the carrier of the microextraction solvent, the extraction, gathering, separation and purification are integrated into a whole, the extraction efficiency is high, the organic solvent consumption is less, the extraction is fast and sensitive, and the like; according to experiment results, the recovery rate and precision of the method both satisfy the demands, and the method can be used for the detection of chlorinated phenol mildew preventives in the textile, and has wide application prospect.

The invention provides a fish culture sewage treatment device, comprising a box body; a sewage inlet is formed in the side face of the box body; an air blower, positioned just above the sewage inlet,is installed on the side wall of the box body; a water outlet pipe is arranged at the upper end of the other side wall of the box body; a control panel, positioned under the water outlet pipe, is installed on the outer side wall of the box body; motors are evenly distributed at the upper end of the box body; the box body is internally provided with a filter screen; the filter screen is positionedabove the sewage inlet, and a settling area is arranged at the lower end of the filter screen; a residue discharge hole is formed in the lower end of the settling area. The filter screen is arranged in the box body, so that the purification of sewage is accelerated; the settling area is arranged at the lower end of the filter screen, so that impurities filtered by the filter screen can be precipitated and collected and are discharged from the residue discharge hole formed in the bottom of the box body, and the box body is enabled to have a function of automatic blow-down; the air blower is arranged for filling the box body with the air so as to enable the air to be combined with water in the box body, so that the content of dissolved oxygen in the water is increased. The device is simple in structure, convenient to operate, rapid in filtering and good in sewage purification effect, and also can increase the content of the dissolved oxygen in the water, thus being suitable for large-scale popularization.

The invention provides a method and a system for determining protection density of an ecological filter zone. The method comprises the following steps: selecting a plurality of sample fields in the ecological filter zone according to different vegetation densities of the ecological filter zone, wherein the vegetation densities of the sample fields are varied in a gradient way; arranging a plurality of sampling points in each sample field; detecting the concentration of each nutrient substance at each sampling point in each sample field, and calculating the concentration of each nutrient substance of each sample field according to the concentration of each nutrient substance at each sampling point in each sample field; establishing a multi-element linear regression model according to the concentration of each nutrient substance of each sample field and the vegetation density of the ecological filter zone corresponding to each sample field; establishing a relation model of the protection density and water quality according to the multi-element linear regression model, and determining the protection density of the ecological filter zone according to the relation model of the protection density and the water quality. By adopting the method and the system, the optimum ecological filter zone protection density can be reasonably and quantitatively determined, the purification of the water quality can be better realized, and the ecological benefit can be effectively improved.

The invention discloses a vehicle-mounted charging support with the purification function. The vehicle-mounted charging support with the purification function comprises a shell, a clamping device, a bottom support and a purification device, the shell comprises a front cover, a cover plate and a rear cover, the front cover and the rear cover wrap and fix the front end and the rear end of the cover plate respectively, an air outlet is formed in the upper end of the cover plate, and an air outlet is formed in the lower end of the cover plate. A wireless charging coil placing groove and a display screen placing groove are further formed in the front end of the cover plate, the wireless charging coil placing groove is located at the upper end of the display screen placing groove, and a wireless charging coil is installed in the wireless charging coil placing groove; through the arrangement of the supporting plate, the connecting sliding rod, the rectangular groove, the shifting block, the cross-shaped sliding way, the circular clamping block and the circular clamping groove, an operator can move the wireless charging coil up and down and left and right by shifting the shifting block, so that the operator can accurately align the wireless charging coil with a mobile phone, and the charging efficiency is ensured.

The invention provides a steep-slope buffer strip gradient treatment system achieving rain runoff collection and purification and a construction method, belongs to the field of water body environment restoration, and aims at solving the problems that an existing steep-slope buffer strip is short in retention time of a rain runoff, a large amount of silt and pollutants in the rain runoff enter a water body in a standard exceeding mode, and water and soil loss and water body pollution are caused. According to the steep-slope buffer strip gradient treatment system, an arbor ecological hedge, a first-stage ecological filter, a shrub ecological hedge, a second-stage ecological filter, a herbaceous plant ecological hedge, a third-stage ecological filter and an aquatic plant functional zone are sequentially formed from high to low along the bank slope face of the buffer strip, and different plants are planted on all the ecological hedges and all stages of the ecological filters. According to the steep-slope buffer strip gradient treatment system achieving rain runoff collection and purification and the construction method, the gradient ecological hedges and the aquatic plant functional zone are arranged, and the slope drop of the steep-slope rain runoff is retarded; by means of diversity configuration of plants with deep and shallow roots, a dam is fixed, and the silt is blocked; by means of the multistage ecological filters, the rain runoff retention time is prolonged, the water storage rate and the infiltration rate are increased, and the water purification efficiency is improved.

The invention provides a steep-slope buffer strip gradient treatment system achieving rain runoff collection and purification and a construction method, belongs to the field of water body environment restoration, and aims at solving the problems that an existing steep-slope buffer strip is short in retention time of a rain runoff, a large amount of silt and pollutants in the rain runoff enter a water body in a standard exceeding mode, and water and soil loss and water body pollution are caused. According to the steep-slope buffer strip gradient treatment system, an arbor ecological hedge, a first-stage ecological filter, a shrub ecological hedge, a second-stage ecological filter, a herbaceous plant ecological hedge, a third-stage ecological filter and an aquatic plant functional zone are sequentially formed from high to low along the bank slope face of the buffer strip, and different plants are planted on all the ecological hedges and all stages of the ecological filters. According to the steep-slope buffer strip gradient treatment system achieving rain runoff collection and purification and the construction method, the gradient ecological hedges and the aquatic plant functional zone are arranged, and the slope drop of the steep-slope rain runoff is retarded; by means of diversity configuration of plants with deep and shallow roots, a dam is fixed, and the silt is blocked; by means of the multistage ecological filters, the rain runoff retention time is prolonged, the water storage rate and the infiltration rate are increased, and the water purification efficiency is improved.

The invention discloses a central air conditioning unit having the air purifying function and relates to the field of central air conditioning. The unit comprises a unit main body. An air inlet is formed in one end of the unit main body. A fresh air opening is formed in the other end, opposite to the air inlet, of the unit main body. An air cooling chamber and a fan chamber are sequentially formedbetween the air inlet and the fresh air opening. An air purifying chamber is formed between the air cooling chamber and the fan chamber. According to the central air conditioning unit, firstly, microparticulate and part of harmful gas in the air are physically absorbed and filtered out; then, residuary alkaline gas or acid gas in the air are removed through an aluminum oxide filter; reducibilityharmful gas such as formaldehyde is removed through a formaldehyde removing box; by means of the matching effect and comprehensive use of physical absorption and chemical decomposition absorption, the treating effect is good; air quality is effectively improved; and the unit benefits to the human body health.

The present invention provides an open-ended textile spinning machine having numerous work stations, comprising at least one center pneumatic conveyer to generate a differential pressure, the differential pressure is acted for making each work station process, and a filter for purifying air current, the rear one is pumped and passed the pneumatic conveyer. According to the invention, the characteristic of the textile spinning machine is that the air current passes the first filter by the action of the differential pressure generated by the center pneumatic conveyer, and designs at least one outlet besides the filtering channel in the first filtering mean, connected to the second filtering mean by one side of the conveyer, and a regulating mean for making the air current passing the first filtering mean change to the outlet in a certain time.