102results about How to "Easy maintenance management" patented technology

The invention discloses a recycling and harmless treatment method for cyaniding tailing slurry. In the method, the cyaniding tailing slurry containing cyanogen, thiocyanate, heavy metal and arsenic and liquid containing hydrogen peroxide are subjected to direct mixing treatment; the method utilizes high specific surface area of micro-fine granular ore to add the contact opportunity between the thiocyanate and the hydrogen peroxide and the contact area between gas phase and liquid phase through surface adsorption to accelerate a speed of oxidation-reduction reaction and an acidifying and stripping speed, utilizes metallic substances contained in slag to accelerate the reaction rate of the oxidation-reduction reaction without the addition of catalyst, and can reduce cost; meanwhile, in neutralization, Fe3+ in the slag is utilized to meet the requirement of arsenic precipitation without the addition of an arsenic precipitation reagent; when residual cyanides is removed from the hydrogen peroxide liquid, the hydrogen peroxide liquid and cyano complexes which are difficult to remove through the oxidation-reduction reaction form sediment so that the residual thiocyanate is further removed; the method can make the conversion rate of the thiocyanate in the ore slurry more than or equal to 88 percent; and compared with the treatment of filter pressing clear liquid of homogeneous ore slurry, the total reclaiming rate can be increased by over 20 percent.

The invention provides a method and an apparatus for processing a virtualized network function service fault, and the method and the apparatus are used for solving a problem that a VNF service fault and an NFVI resource can not be rapidly associated and positioned when a service or application fault is found by a traditional element management system (EMS) under a network function virtualization (NFV) system. The invention comprises the following steps of acquiring service fault information sent by a VNF element, wherein the service fault information carries an identification of a first virtual machine in which a fault occurs and the first virtual machine is a virtual machine configured for the VNF element by a virtualized network function manager (VNFM); acquiring first NFVI resource information corresponding to the identification of the first virtual machine according to a pre-stored mapping relationship between an identification of a virtual machine and network function virtualization infrastructure NFVI resource information; and determining a device in which a fault occurs according to the first NFVI resource information. In embodiments of the invention, a user can rapidly position a device in which a fault occurs according to the VNF service fault.

The invention discloses a planting device with a water storage function. The planting device comprises a tank. An opening is formed in the upper end of the tank, and at least one vertical partition plate is arranged in the tank and is lower than the opening in the upper end of the tank; the tank is divided into at least two spaces by the partition plates, and each space is used as a primary planting chamber or a primary water storage chamber; vertical water partition plates are arranged in the primary planting chambers or the primary water storage chambers, and water seepage chambers are arranged among the water partition plates and the partition plates and are used for being filled with soil; the bottoms of the primary water storage chambers are communicated with the bottoms of the water seepage chambers; cover plates are arranged on the primary water storage chambers. The planting device has the advantages that water can be stored in the primary water storage chambers, at least one plant can be planted in each primary planting chamber, side roots of all the plants can absorb moisture or nutrients from the water seepage chambers, and accordingly the planting device can assist the roots of the plants to meet growth requirements of all the plants; the planting device has the water storage function and can be used in places with shortage of water, and accordingly the purpose of greening drought regions can be achieved.

The invention discloses an automatic and continuous bag-breaking and unloading device. The automatic and continuous bag-breaking and unloading device comprises a bag reshaping area, a belt conveyer and a bag-breaking unloading area which are arranged on the front, middle and rear sections respectively. The bag-breaking reshaping area comprises a vibration machine frame and a spring supporting frame, wherein the spring supporting frame is arranged above the vibration machine frame in an erected mode; the vibration machine frame is provided with a transmission roller mechanism; a floating interval where bags pass in a reshaping mode is kept between the spring supporting frame and the transmission roller mechanism; the front portion of the belt conveyer is in butt joint with the transmission roller mechanism, and the rear portion of the belt conveyer is in butt joint with the bag-breaking unloading area; the bag-breaking unloading area comprises a rack, a hook mechanism, a cutter, a vibration sieving mechanism, an empty bag collecting frame and a dustproof mechanism. The automatic and continuous bag-breaking and unloading device is simple and compact in structure, integrates the integration and reshaping procedure and the bag-breaking unloading procedure, realizes an automatic and continuous production mode of bag reshaping and bag-breaking unloading, is economical and durable, and is not prone to having faults after being operated for a long time.

The invention relates to a device for treating oil stain water in an oil stain vessel and a method thereof, which belongs to the field of vessel sewage treatment and environment protection. The oil stain water treating device and the method treat the oil stain water by combining the pretreatment, middle treatment and post-treatment together. The pretreatment is finished in a multilevel oil separation and sedimentation chamber. The time between entering and flowing out is about 42 hours; the middle treatment is finished in the inclined board oil separation chamber and the gas floating chamber; the post-treatment adopts the multilevel filtering device. After the oil stain water in the vessel is treated through the multilevel oil separation and sedimentation, the inclined board oil separation, the gas floating and a multilevel filtering, in the drained oil stain water, the oil concentration is less than or equal to 5mg / L, even the oil concentration is less than or equal to 2mg / L. The oil stain treating device has the advantages of low investment, stable operation with safety and reliability, as well as simple, reliable and economic process of treating the oil stain water. The oil stain can be recycled with remarkable economic benefits.

The invention discloses a double-layer roller-way kiln provided with a lifting device. The double-layer roller kiln comprises a double-layer roller-way device and the lifting device, the double-layer roller-way device comprises an upper layer kiln way and a lower layer kiln way, the upper layer kiln way is provided with a preheating chamber and a firing chamber, the lower layer kiln way is provided with a firing chamber and a cooling chamber, and the lifting device is arranged beside the firing chambers; the lifting platform comprises a fixing frame, a lifting platform, a roller platform located in the lifting platform and a lifting mechanism which drives the lifting platform to ascend and descend; the lifting platform comprises a lifting plate, a load-bearing plate and support plates which are located between the lifting plate and the load-bearing plate, and the roller platform comprises a rack, a chain wheel transmission device and roller rods; the lifting mechanism comprises a motor, a hauling cable and a balance weight. According to the double-layer roller-way kiln, the structure is simple, the operation is convenient, the manufacture and use can be conducted, the occupied area is small, and the management and maintenance are facilitated; meanwhile, the energy utilization ratio is high, the cost is saved, and the kiln is suitable for being used and popularized.

The invention provides a medium-pressure and high-pressure air compressor set. According to the medium-pressure and high-pressure air compressor set, air in the natural environment can be pressurized through a screw compression system and a piston compression system; the discharge capacity is large, the discharge pressure is high, the energy consumption is small, and the compression efficiency is high. The medium-pressure and high-pressure air compressor set comprises the screw compression system, the piston compression system, a filter, a refrigerated air dryer, a buffer tank and a blow down tank. The screw compression system comprises a two-level screw compressor; the air in the natural environment is pressurized to 1.5-2.5 Mpa; after being dehydrated, degreased and cooled, the screw-compressed air passes through the filter and the refrigerated air dryer and then enters the piston compression system through the buffer tank. The piston compression system comprises a two-level piston compressor or four-level piston compressor, and the air pressurized through the screw compression system is pressurized to over 6.3 Mpa or over 32 Mpa. The blow down tank is connected with the buffer tank, the filter and the refrigerated air dryer and used for the collecting function of the buffer tank, the filter and the refrigerated air dryer.

The invention discloses an environment detector fixing device which comprises a fixing base, wherein two sliding chutes are formed in the upper side wall of the fixing base; a sliding plate is in sliding fit with the interior of each of the sliding chutes; limiting grooves are formed in the inner walls of the two sides of each of the sliding chutes; limiting plates matched with the limiting grooves are fixedly connected with the side walls of the two sides of the sliding plate in each of the sliding chutes; and thread openings are formed in the side walls of the two sides of the fixing base. According to the environment detector fixing device, two bolts are arranged to push the sliding plates to move so as to drive the upper end of a slant rod to rotate and lift upwards, so that a supportrod is pulled up to adjust the height of the support rod, the height of a placement plate can be adjusted, and maintainence and management are facilitated; a wire collection device, a stay cord and aclamping plate are arranged, the automatic wire collection device is adopted to contract and pay off the stay cord to drive the clamping plate to rotate towards the inner side or the outer side, so that environment detector bodies with different sizes can be clamped and fixed to prevent the environment detector bodies from falling off.

The invention relates to an S-shaped channel type anaerobic fermentation device relating to a fermentation device. The S-shaped channel type anaerobic fermentation device comprises a feeding pond, an anaerobic fermentation pond and a discharging pond, wherein the feeding pond and the discharging pond are positioned at one side of the anaerobic fermentation pond; the upper ends of the feeding pond and the discharging pond are higher than the anaerobic fermentation pond; the top end of the anaerobic fermentation pond is sealed; and the anaerobic fermentation pond is internally provided with a plurality of partition plates or partition walls for structuring one or more groups of S-shaped channels. Fluid substances are sufficiently subjected to anaerobic fermentation by flowing in the anaerobic fermentation pond in an ponds-shaped channel way and then discharged from an overflow opening of the discharging pond, and methane generated through the anaerobic fermentation in the anaerobic fermentation pond is discharged through a gas guide hole arranged on the top end, enters a gas storage hood and is discharged and collected along a gas guide pipeline positioned at the top end of the gas storage hood. The invention has simple structure, very convenient construction and time and material saving, can be used for large and medium methane engineering construction, lengthens the anaerobic fermentation process through S-shaped channel type arrangement and greatly promotes the flowability of the substances through a capacious S-shaped space, thereby enhancing the gas generation efficiency; and in addition, the invention has convenient later-stage maintenance and management and simple and easy normal discharging and large discharging, and is suitable for being popularized in large quantities in rural areas.

The invention relates to a self-powdered self-cleaning roof rainwater collecting and processing system device. The device comprises a rainwater bucket, an abandoned flow supporting frame, a water pipe, a water-falling pipe, a water reservoir, a water-retaining floating ball, an ultraviolet disinfection lamp tube, a submersible pump, a primary filter screen, a filter roller, a bypass branch rainwater pipe, a filter sewage interception and collection bucket, a reservoir access port, an aeration overflow pipe, a cleaning mouth, a ring floating ball baffle, an abandoned flow container, a roller filter box, a secondary filter screen, a water sink, a hook, a hook sleeve, a convex lug, a handle, and a curved scraper. The water flow first enters into the abandoned flow container through the water-falling pipe to intercept the sewage flow, the relatively clean rainwater hits the filter roller to rotate, the curved scraper scrapes off the dirt attached to the filter roller, the dirt is thrown into the filter sewage interception and collection bucket under the dual action of the filter roller rotation and the water flow impact, and the rainwater is filtered through filter holes of the filterroller and other multi-layer filtration ways to enter into the water reservoir. The self-powered self-cleaning roof rainwater collecting and processing system device can achieve self-powered self-cleaning roof rainwater collecting and processing.

The invention discloses a multi-freedom-degree and rotatable VR seat which comprises a multi-freedom-degree motion platform and a seat body installed on the multi-freedom-degree motion platform. The multi-freedom-degree motion platform comprises a movable platform, a rotatable platform, telescopic action cylinders and a fixed platform, wherein the seat body is fixed to the movable platform, the movable platform and the rotatable platform are connected through multiple telescopic action cylinders, two ends of each telescopic action cylinder are hinged to the movable platform and the rotatable platform respectively, the rotatable platform is installed on the fixed platform, and thus the movable platform and the seat body are driven to perform multi-freedom-degree motions through telescoping motions of the telescopic action cylinders and rotation of the rotatable platform. Wire passing slide rings are coaxially installed at the center of the rotatable platform. The multi-freedom-degree and rotatable VR seat can flexibly achieve forward and backward bending, left-right swing and other actions and meanwhile can achieve rotation, and the experience effect of a player is improved.

The invention provides a micron bubble-generating device and a special cyclone thereof. The cyclone comprises a hollow through cavity consisting of a cylindrical cavity and a truncated-cone shape cavity, wherein the height of the truncated-cone shape cavity, the inner diameter of the upper bottom surface of the truncated-cone shape cavity, the inner diameter of the lower bottom surface of the truncated-cone shape cavity and the height of the cylindrical cavity are in a proportion of 1:(0.2-0.4):(0.8-1.1):(0.28-2.2); the side of the cylindrical cavity is provided with at least one pair of through holes; the lower bottom surface of the cylindrical cavity is provided with a through hole (23); and the upper bottom surface of the truncated-cone shape cavity is provided with a through hole (24). The micron bubble-generating device provided by the invention is formed by connecting the cyclone (2) with a water pump (3) through a pipeline. The particle size of micron bubbles generated by the device is less than 50 microns, and the dissolved oxygen concentration of the micron bubbles can reach a super-saturated state, so that the micron bubbles significantly improve oxygenation capacity and oxygen transfer efficiency, and have good application prospects in sewage treatment, pollution control over rivers and lakes, as well as aquaculture.

The invention discloses a combined type woodworking engraving machine of a multi-station dust removing device. The combined type woodworking engraving machine comprises a machine platform for loading an object to be engraved and a rack which spans across the machine platform, and further comprises a dust removing mechanism; the dust removing mechanism comprises a main body; a negative-pressure general pipe and sealed air cylinders are arranged at the top of the main body; a plurality of negative-pressure branched pipes are arranged at the bottom of the dust removing mechanism; the positions of the sealed air cylinders and the negative-pressure branched pipes correspond to the positions of engraving machine main shafts; a sealing plug is connected with the tail end of a piston rod of one sealed air cylinder; the shape of the sealing plug is adaptive to the shapes of inner walls of the negative-pressure branched pipes; when the piston rod of the sealed air cylinder moves toward one negative-pressure branched pipe, an outer wall of the sealing plug is clung to the inner wall of the negative-pressure branched pipe. When a certain engraving machine main shaft does not work, an air cylinder works to block the corresponding negative-pressure branched pipe through the sealing plug; meanwhile, a negative-pressure gas value is reduced by the system and dust collection work of other stations can still be realized, so that the cost is saved and the combined type woodworking engraving machine is easy to repair and manage.

The invention discloses a prediction method for residual life of a spinning frame, which comprises the following steps of: extracting key parameters influencing equipment degradation by analyzing real-time monitoring data of the spinning frame, and constructing a degradation indication quantity of the spinning frame by utilizing a weighted principal component analysis method; and then establishinga degradation model based on the Wiener process by utilizing the constructed degradation indication quantity, and predicting the remaining service life of the spinning frame. The service life of thespinning frame is predicted, and a new method is provided for better managing the service life and health of the spinning frame.

The invention relates to the technical field of street lamp poles and provides a simple lifting type street lamp pole facilitating maintenance and management. The simple lifting type street lamp pole facilitating maintenance and management comprises a base and a stand column. A lifting cavity is arranged in the stand column. A fixed pulley is fixedly arranged on the inner surface of the top of the lifting cavity. The left side wall and the right side wall of the lifting cavity are provided with sliding grooves. A limiting plate is arranged at the lower end of the lifting cavity. A lifting connection rope is arranged on the fixed pulley. One end of the lifting connection rope is connected with a street lamp cross rod, and the other end of the lifting connection rope is connected with a counterweight block. A rope passing hole is formed in the limiting plate. A lighting street lamp is arranged at one end of the street lamp cross rod, and a balance weight is arranged at the other end of the street lamp cross rod. A traction rope is arranged on the bottom face of the counterweight block. A draining cavity is arranged below the limiting plate. An operation box is arranged on the surface of the lower end of the stand column. A safety door is arranged at an opening of the operation box. The safety door is provided with a safety lock. A conical draining groove is arranged at the connection portion between the bottom of the draining cavity and the upper surface of the base. A draining through hole is formed in the bottom of the conical draining groove. The simple lifting type street lamp pole facilitating maintenance and management achieves convenient ascending and descending when the street lamp is overhauled or maintained, and the simple lifting type street lamp pole facilitating maintenance and management is high in safety and good in draining performance.

The invention belongs to the technical field of fine-grain mineral separation equipment, and discloses a KGS concentrating machine. The KGS concentrating machine comprises a frame, a motor, a turntable main shaft, a concentrate tank, a middling cutter, a separation turntable, a feeding device, a washing water pipe, an unloading water pipe, a tailing cover and a belt wheel; the motor is arranged on one side of the frame; the turntable main shaft and the belt wheel arranged at the bottom of the turntable main shaft are arranged on the other side of the frame; the belt wheel is connected with the motor through a belt; the separation turntable is arranged at the top of the turntable main shaft, and is connected with the turntable main shaft; the tailing cover is arranged at the top of the frame; the separation turntable is arranged in the tailing cover; and the bottom of the tailing cover is set as a certain inclination, and the lowest point is connected with a tailing discharge port. The KGS concentrating machine designs a sorting machine with reasonable structure and capable of controlling the concentrate quality through adjusting the middling yield according to the motion trail pitch difference of light and heavy minerals in a composite force field and a centrifugal flowing film beneficiation principle.

The invention applies to the roller of flour mill, and the process method for grinding teeth of roller in mill for grinding corn, soybean and so on. The invention includes roller surface with silk teeth, the top is arc type surface, and the cross section of the top is arc type. The invention uses plasma or electric spark, or laser surface thermal process technology, processes the surface of the roller into arc type. The invention can upgrade the rigidity and wear resistance.

The present invention relates to a bio-gas hydrogen sulfide removal device which can continuously remove hydrogen sulfide in bio-gas. The bio-gas hydrogen sulfide removal device adopts ion exchange fiber Pall ring for bio-gas purification. The Pall ring is filled in a net drum cylinder. The Pall ring is provided with ion-exchange fiber. When the drum rotates, the Pall ring precipitates in a regeneration liquid for ion exchange. Through the internal friction shock of the Pall ring, under the condition of without an external additional device, the regenerated chloride is removed efficiently, so that the hydrogen sulfide scavenging capacity is maintained at the maximum, and the use amount of the regeneration liquid is reduced. In addition, hydrogen sulfide from bio-gas is removed, so that the damage of hydrogen sulfide in the process of using bio-gas is minimized. Corrosion for power equipments and boilers can be prevented by using bio-gas as a fuel.

The invention discloses an environment monitoring equipment support which comprises a base. The environment monitoring equipment support is characterized in that a round barrel is installed on the base, a motor support is installed on the base, a rotating motor is installed in the motor support, a gear is installed at the driving end of the rotating motor, a guide support is installed on the base,a supporting column is inserted into the guide support, a tooth groove is formed in the supporting column, the gear meshes with the tooth groove, the supporting column is provided with a bearing support, a fixed support is installed on the bearing support, a base support is provided with a driving support, the driving support is internally provided with an electromagnetic push rod, the driving end of the electromagnetic push rod is provided with brake teeth, and the brake teeth mesh with the tooth groove. The environment monitoring equipment support can be lifted, maintenance and management are facilitated, the height can be adjusted, operation is simple, and use is convenient.

The invention discloses a steering positioning device. The steering positioning device comprises a rack, a conveyor belt, and a clamping steering unit, wherein the clamping steering unit comprises an electric cylinder, a rotary air cylinder, a clamping bracket body, a clamping air cylinder and a lifting air cylinder; the electric cylinder is transversely arranged on the rack in a mode that the transmission direction and the longitudinal direction form certain angle; the rotary air cylinder is arranged below the electric cylinder; the rotary air cylinder and a linear transmission part of the electric cylinder are kept to synchronously displace; the clamping bracket body is arranged below the rotary air cylinder; the clamping bracket body and a rotary transmission part of the rotary air cylinder are kept to displace synchronously; the clamping air cylinder and the lifting air cylinder are arranged on the clamping bracket body; a fixed baffle plate is arranged at the movable end of the lifting air cylinder; and a movable baffle plate which is matched with the fixed baffle plate for clamping an object is arranged at the movable end of the clamping air cylinder. According to the steering positioning device, cartons are horizontally moved in transverse and longitudinal directions, and are steered, so that the steering positioning device is extremely flexible in application.

The invention belongs to the technical field of automobile part production and welding, and provides a full-automatic replacement electrode head device for welding. The full-automatic replacement electrode head device is used for automatically exchanging an electrode head between an upper electrode connecting rod and a lower electrode connecting rod of an electrode holder. The full-automatic replacement electrode head device comprises a secondary rotating assembly, a separating assembly and a taking and placing mechanism, the taking and placing mechanism is arranged on one side of a second-stage rotating assembly, and after the electrode head is separated, the replaced electrode head is placed on the taking and placing mechanism by the aid of a robot, and meanwhile, the robot can automatically pick up a new electrode head from the taking and placing mechanism. The method has the advantages that the abrasion of the electrode connecting rods matched with the conical surface is reduced, the service life of the electrode connecting rods is prolonged, the cost is reduced, and the burden of an operator is relieved; and the device is simple in structure, convenient to maintain and manage,stable and rapid, and can automatically the electrode head.

The invention relates to a power generation device capable of converting kinetic energy and potential energy generated by coastal surge waves into mechanical energy. An energy-gathering floating shipway is articulated with a shore base through a linkage large arm; when waves wash towards a shore, the energy-gathering floating shipway swings around a central shaft, thus the linked machinery is driven to rotate in a positive direction and a negative direction; and then the mechanical energy is converted to uni-directional rapid rotation motive power by a direction stabilizing device and a speed increaser for the power generation by an engine. The power generation device is a shore-based power generation by virtue of the surge waves, and has the performances of high living capability in the ocean environment, high conversion efficiency, simple structure, and the like.

The invention relates to the technical field of garbage treatment equipment, in particular to a solid waste crushing treatment device. The solid waste crushing treatment device comprises an upper shell and a lower shell which are assembled, a feeding opening is formed in the top of the upper shell, a first rotating shaft is arranged inside the upper shell and the lower shell, the top of the firstrotating shaft extends out of the upper shell and is driven through a first motor arranged at the top of the upper shell to rotate, a lower spiral blade is arranged on the outer wall, located in the upper shell, of the first rotating shaft, a transverse crushing blade is fixed to the outer wall, between every two adjacent blade bodies of the lower spiral blade, of the first rotating shaft, an upper spiral blade is arranged on the outer wall, located in the lower shell, of the first rotating shaft, a plurality of inclined threaded holes are formed in the outer wall of the lower end of the uppershell in a central symmetry mode, and inclined lateral crushing mechanisms are installed in the threaded holes. According to the solid waste crushing treatment device, inner structures of the upper shell and the lower shell are reasonable in arrangement, local disassembly is convenient, blocking is not prone to occurrence, and maintenance and management are convenient.

The invention discloses a continuous aerobic fermentation system of box-shaped moving garbage and an application method thereof. A blanking hopper provided with a twin-screw feeding and bag-breaking integrated machine, a garbage moving plate driven by a drive motor, an oxygen supply pipeline, a garbage leachate collection tank, an exhaust gas outlet and a rotten garbage discharging outlet are installed in an underground box-shaped fermentation tank, the household garbage moves slowly to a discharging side in a box-shaped fermentation bin provided by the invention, and then the household garbage is discharged after fermentation and composting. The household garbage is subjected to underground full-closed aerobic fermentation treatment through applying the system provided by the invention, so the malodorous odor is eliminated, the dirty and messy environmental appearance of a garbage disposal site is changed, and the underground fermentation bin has a good thermal insulation effect, thegarbage dehydration is reduced, the drying effect is good, the sorting obstacles are overcome, the sorting efficiency is improved, and the system and the method are beneficial to resource utilization.

The invention relates to a biological contact oxidation process and provides a method for wastewater treatment by utilizing a KM biological contact oxidation process. The method is characterized in that a biological belt and BM (beneficial microorganism) filler are used as carriers, a biological strain with a specific function is immobilized on the biological belt and BM filler, and a modern biological contact oxidation process is combined. By using the method provided by the invention, the removal rates of various pollutants especially ammonia nitrogen by the biological contact oxidation process are greatly improved, the problem of poor ammonia nitrogen removal effect is solved, the effluent stably reaches the national pollutant discharge standard of wastewater treatment plants, and boththe operation cost and investment cost are lower.

The invention discloses a maintenance management system for coal mine equipment. The maintenance management system is characterized by comprising a system maintenance management module, a production safety management module, an emergency maintenance module, a safety alarm module and an accident processing and analyzing module, Compared with the prior art, the method has the advantages that the cost is low. The beneficial effects of the invention are as follows: the paint has good effects; The coal mine equipment management system is used in a network platform. the operation of the coal mine mechanical equipment is monitored to facilitate normal operation of equipment, the coal mine equipment maintenance management system takes safe operation and use of coal mine equipment as a center point; All mechanical equipment in coal mine production is subjected to maintenance monitoring and decision making; Reliable production equipment is provided for efficient production of the coal mine, theeconomic life cycle of the equipment is analyzed while the management concept of the equipment life cycle is applied to the coal mine equipment maintenance management system, the equipment life cycleand the comprehensive utilization value of the equipment are comprehensively considered, and the utilization rate of the coal mine equipment is maximized.

The embodiment of the invention provides a water shortage anti-freezing method and device for a cold and hot water unit which is applied to a heat pump system. The method comprises the following stepsof starting a water inlet pump for water feeding and acquiring a current water flow state when the cold and hot water unit is in an anti-freezing protection mode; judging whether the current water flow state is in a normal state or not; starting a compressor unit to make heat and acquiring a current working parameter and a current environment temperature value when the current water flow state isin an abnormal state; and closing the water inlet pump and the compressor unit or continuously starting the water inlet pump and the compressor unit according to the current working parameter and thecurrent environment temperature value. According to the water shortage anti-freezing method and device for the cold and hot water unit, the damage risk of each unit of a heat pump system can be reduced, the practicability and the service life of the heat pump system can be improved, the difficulty of manual detection can be reduced, and accordingly a technician can conveniently perform maintenance management on the heat pump system.

The invention provides a technology and system suitable for country and dispersive type sanitary sewage purification. The technical scheme of the technology and the system is as follows: for the technology and the system suitable for country and dispersive type sanitary sewage purification, the system comprises a water distributing well; sanitary sewage is collected to the water distributing well; the sanitary sewage in the water distributing well is pumped to an anaerobic biological filter through an elevator pump for being carried out first-step purification as well as sedimentation; a sludge elevator pump is arranged inside the anaerobic biological filter and is used for elevating biochemical sludge to a septic tank; water subjected to the first-step purification is pumped to a buried biological filter for being carried out second-step purification; and water subjected to the second purification can be reused. The technology and the system have the advantages of simple maintenance, convenience for management and little influence on over-ground cultivation although large areas are occupied.