81results about How to "Clean discharge" patented technology

The invention discloses a photovoltaic array IV characteristic curve scanning and parameter identification system and method. The system comprises a data acquisition module, a photovoltaic array IV characteristic curve scanning module, a storage module and a display module, wherein the data acquisition module is used for sampling the temperature and the illuminance of a photovoltaic array and transmitting the temperature and the illuminance to the photovoltaic array IV characteristic curve scanning module through a low-power wireless sensor network; IV characteristic curve scanning is carriedout on the basis of a dynamic capacitance charging method, and output current and voltage of the array are detected and stored; and the scanned IV characteristic curve is converted into an IV curve under the standard condition (STC), IV curve fitting is carried out by using an ABC-NM simplex hybrid algorithm and parameters of a photovoltaic model are accurately identified. The system disclosed bythe invention can be carried outside to assist inspectors in manual detection on the photovoltaic array, can also be put into a junction box and can be connected with an upper computer to achieve real-time online component-level and component string-level distributed photovoltaic array IV curve scanning.

An air purification system for indoor air ventilation and purification includes an air cleaner box, a fresh air inlet, a room A air return port, a room A air supply port, a mixed air duct, a fan and a purifier, and further includes a fresh air control valve and an air return electric valve, the air purification system can be also provided with a room B air return port and a room B air supply port besides the room A air return port and the room A air supply port, wherein all parts are sequentially connected inside the air cleaner box. In addition to the above, the air purification system can be a wood air cleaner box and can be combined with wood furniture, connected with a temperature regulator, provided with a humidity regulator, combined with a nature air outlet and provided with a positive pressure air outlet. The air purification system has effects of regulating fresh air quantity, temperature and humidity in indoor environment and positive pressure ventilation, one set of purification device is shared by two rooms, so that the whole indoor air reaches comfortableness of cleanness, oxygen enrichment and appropriate temperature and humidity and all-weather operation requirement. The air purification system has functions of decoration and rapid installation.

A cyclone-separation cleaner with water filter for exhausting clean air is composed of main body, main sucking pipe, cyclone air is composed of main body, main sucking pipe, cyclone separator with the tangent air inlet connected with said main sucking pipe and the air outlet communicated with internal air channel, vacuumizing motor unit, and water cup for filtering air.

The invention relates to a detergent box, in particular to a detergent box and a method for fully dissolving and draining a softener, wherein a water inlet pipe is arranged in a siphon fluid-discharge pipe; water rises from the bottom of a box body to impact the softener in the box body upwards from the bottom, so as to fully dissolve and dilute the softener; and the diluted softener overflows from an overflow plate, enters a wash bucket and then enters the wash bucket in a siphon mode, so as to thoroughly discharge the softener. The detergent box is simple in structure. An L-shaped water inlet pipe is arranged inside a siphon pipe, tap water enters from a horizontal pipe of the L-shaped water inlet pipe and then changes the direction upward; most of the tap water is discharged from the siphon fluid-discharge pipe, and a little tap water passes through a clearance between a siphon cap and the siphon fluid-discharge pipe, or passes through a small-diameter pipe, is injected into a dilution box from a siphon port which is on the bottom of a softener box body and is connected with the siphon cap, and impacts the softener in the box body upwards from the bottom, so as to fully dissolve and dilute the softener and thoroughly discharge the softener. The detergent box improves the effect of softening clothes.

The invention relates to a floating upper-filtering style filter with backwashing pollution-cleaning capability and a using method thereof, relating to sewage disposal technique field. A tank body is respectively welded with a manhole, a water outlet, a backwashing water inlet, a draining outlet and a water distributor, and the tank body is tightly fixed with a water filter and is connected with a vent flange and is embedded with a vision lens. The water outlet is connected with a water draining pipe through a water draining valve; the backwashing water inlet is connected with a water inlet pipe through a backwashing water inlet valve; the water inlet pipe is connected with the water distributor through a water inlet valve; a backwashing gas inlet is connected with a gas inlet pipe through a gas inlet valve; the draining outlet is connected with the filter body through a connecting valve, and the filter body is connected with a seal cylinder and the seal cylinder is connected with a draining pipe all through draining valve flanges; and the filter body is fixedly connected with a strainer film. The filtering material adopted in the method comprises polystyrene, pentane vesicant and cinnamene free monomer with a proportion less than 1. When in sewage disposal, the filtering materials are filled and draining is closed, and connection is done and gas is supplied, and then the water inlet valve is backwashed and the water draining valve and the inlet valve are opened; when pollutions cleaning, the water draining valve and the inlet valve are closed, and draining is opened and connection is done and the water inlet valve and the gas inlet valve are backwashed. The invention can be applied to sewage disposal, and the upper filtering design occupies less space and the filtering materials have a long service life for pollution cleaning.

The invention relates the technical field of sewage treatment equipment and particularly relates to an improved sewage solid liquid separation filtering device. The improved sewage solid liquid separation filtering device comprises an outer cylinder, a filter drum, a main shaft, and a spiral blade on the main shaft, wherein a liquid outlet is formed in one end of the outer cylinder, a through hole is formed in the side wall of the filter drum, a charging cover plate and a discharging cover plate are respectively arranged on two ends of the side wall of the filter drum; one end of the discharging cover plate in the filter drum is downward inclined; a hollow part is arranged on the middle part of the discharging cover plate, and a magnet is fixed on the hollow part; and a first filtering net is arranged on the outer end of the filter drum. The invention discloses an improved sewage solid liquid separation filtering device which can eliminate the metal piece in the sewage, prevent the device damage and completely separate the solid and the liquid.

The invention discloses a dust recovery treatment device in the process of aluminum profile processing, which comprises a filter box and a dust collecting cover, wherein the filter box communicates with the dust collecting cover. The filter box is fixedly arranged at the non-movable end of an external processing machine tool through a bracket, the opposite side of the filter box is provided with an air inlet and an air outlet, the middle of the filter box is successively provided with a cavity, a filter screen and an adsorption layer, the bottom of the cavity communicates with a storage tank,the dust collecting cover is fixedly arranged at the movable end of a cutter of the external processing machine tool through an installation seat, the dust collecting cover is of a cover structure, the dust collecting cover is provided with an installation hole and an exhaust port, the outer part of the installation hole is fixedly provided with a spherical shell, the outer part of the spherical shell is connected with the installation seat in a matched way, the inner part of the spherical shell is provided with a through hole for allowing the cutter to pass through, two gooseneck-shaped tubesare also arranged on the dust collecting cover, the inner end of each gooseneck-shaped tube is provided with a spray head, and the outer ends of the gooseneck-shaped tubes communicate with a coolingsystem providing cutting fluid. According to the dust recovery treatment device in the process of aluminum profile processing, through adopting a mode of arranging the dust collecting cover at processing cutter, dust is collected from the root, and in combination with the cooling system of the processing machine tool, dust is wetted by cooling liquid to avoid dust flying.

The invention belongs to the technical field of exhaust gas purification equipment, and particularly relates to a condenser for an organic waste gas circulation purification device. The invention discloses the condenser for the organic waste gas circulation purification device, which comprises a fan, a condensation box and a spray condensation tower, wherein the condensation box comprises a box body, the water pump is installed in a water tank, and the water in the water tank is conveyed to a spray device in the spray condensation tower under high pressure by the water pump to atomize the water, and the adsorption effect is generated with the exhaust gas, The generated mixed water droplets settle to the bottom of the spray condensation tower, and re-flow into the water tank through a wateroutlet pipe for recycling. The circulation purification device has the beneficial effects that the oil in the organic waste gas is adsorbed, plunges into a collecting pool, and is recycled through the pipeline, so that cost is saved, The circulation purification device eliminates the odorous harmful gas, so that the clean gas is discharged.

An air exchange device for inflating air bag or releasing air from the air bag is composed of air pump and its base with air hole, and one-way valve for controlling if air can pass through the air hole. When an air bag is being inflated, the air inlet of air pump is communicated to the space outside the air bag and its air outlet is communicated to inside of air bag while the one-way valve is opened. When the air is being released from air bag, the air outlet of air pump is communicated with the space outside the air bage and its air inlet is communicated with inside of air bag while the one-way valve is opened.

The invention discloses an automatic discharge device of a lithium battery. The automatic discharge device comprises a discharge barrel which is obliquely arranged, wherein one end of the discharge barrel is sealed and is connected with a driving shaft; the other end of the discharge barrel is opened and is connected with a feeding / discharging barrel; the driving shaft is connected with a bearingchamber A with a bearing; the driving shaft penetrates through the bearing chamber A and then is connected with a driving device capable of rotating frontward and backward; the lower side of the bearing chamber A is connected with a short bracket; the feeding / discharging barrel is connected with a bearing chamber B with a bearing; the lower side of the bearing chamber B is connected with a long bracket; a feeding machine and a sieving machine are arranged at one side of the long bracket; the discharge device can be used for mixing the lithium battery and a discharge medium and a mixture is putinto the discharge barrel and is sufficiently stirred and mixed in the discharge barrel; the discharge efficiency is increased and the discharge efficiency is improved by 4 to 10 times.

The invention discloses a mixer. The mixer comprises an outer cover and a feeding hopper, wherein the packing hopper is connected below the outer cover; a mixing hopper is horizontally erected in the inner cavity of the outer cover; an stirrer is arranged in the inner cavity of the mixing hopper; the mixing hopper is provided with a hole which communicate the inside of the mixing hopper with the outside; the mixing hopper rotates around a horizontal axis. The mixer disclosed by the invention can be used for mixing materials uniformly and can discharge materials conveniently without leakage. The mixing hopper can turn over to pour out the materials. Because the mixing hopper is arranged in the inner cavity of the outer cover, the spilling of the materials can be prevented effectively, and the materials can be discharged completely.

The invention discloses a purification device with a stirring function for wastewater treatment, and belongs to the technical field of wastewater treatment. The device comprises a supporting bottom plate and a pretreatment box which is arranged at one end of the upper surface of the supporting bottom plate, a filter net is arranged in the pretreatment box, a second slag discharging pipe corresponding to the filter net is arranged on one side of the pretreatment box, a first chemical dosing pipe is arranged at one end of the upper surface of the pretreatment box, a water pump is arranged at theother end of the upper surface of the pretreatment box, a first connecting pipe is arranged at the joint of the water pump and the pretreament box, and a water inlet pipe is arranged on the top of the prestretament box; a stirring mechanism is arranged on the purification device for wastewater treatment, a user can stir disinfectant powder put through the first chemical dosing pipe through a stirring rod and a stirring floating ball on the stirring mechanism, and therefore the disinfectant powder and wastewater can be fully mixed, a cleaning brush plate on the stirring mechanism can play a cleaning role on the filter net, and the phenomenon that the filter net is blocked in use is prevented.

The invention discloses a sucking-type multi-filter element self-cleaning filter. The sucking-type multi-filter element self-cleaning filter has a simple and compact structure, can automatically cleana filter element, can completely discharge the cleaning sewage, can reduce residual and has good filtering effects. A cylindrical shell orderly comprises a left filtering zone, a connection zone anda right filtering zone. The filter elements are arranged in the left filtering zone and the right filtering zone. One side of the cylindrical shell facing the ground is provided with a baffle which isisolated from a sealing head. The baffle is provided with a through hole. The through hole passes through the baffle and is respectively communicated with the filter elements and the sealing head. Anautomatic drainage pipe is arranged on the sealing head. A drainage assembly communicated with the automatic drainage pipe is arranged in the sealing head. The sucking-type multi-filter element self-cleaning filter has a simple and compact structure and good cleaning effects, can automatically clean the filter elements, has good filtering effects, is divided into the left and right filtering zones and improves the filtering efficiency. The drainage assembly can discharge sewage according to demands so that the cleaning sewage is completely discharged and does not produce residual.

The invention discloses a solar water heater emptying valve operating device comprising a solar water heater water tank, an emptying valve, a water feeding electromagnetic valve and a water drainage valve. The solar water heater water tank is connected to a water using device through the emptying valve and a water discharging valve to form a hot water supplying pipeline, the bottom of the hot water supplying pipeline is provided with the water drainage valve, and the hot water supplying pipeline is connected to a cold water resource through the water feeding electromagnetic valve. The device is characterized in that the emptying valve, the water feeding electromagnetic valve and the water drainage valve are connected to a controller through control lines, and the controller is provided with a emptying valve switching control module, a water feeding control module and a pipeline water drainage module; from 50 minutes to 24 hours after a user uses hot water and the emptying valve of the solar water heater is opened, the emptying valve switching control module controls the emptying valve to close once or open and close for several times automatically according to the time. The device is ingenuous and unique in design and simple in structure and is capable of removing the scale of the emptying valve automatically, the service life of the emptying valve can be prolonged effectively, automatic solar water heater water feeding can be implemented, and usage is facilitated.

The invention discloses an industrial organic exhaust gas treatment system. The industrial organic exhaust gas treatment system comprises a heat exchanger, a first physical adsorption device, a liquidadsorption device, a drying machine, a second physical adsorption device, a chimney, and a gas monitoring device which are arranged along a gas flow direction successively. In using process, the heatexchanger is adopted for waste heat recycling; the first physical adsorption device is adopted for primary filtering purifying; the liquid adsorption device is adopted to remove pollutants in exhaustgas further; then exhaust gas is introduced into the drying device for drying; the second physical adsorption device is adopted for physical adsorption, deep purification on exhaust gas is realized,and it is ensured that clean exhaust gas is discharged. According to the liquid adsorption device, an adsorption liquid is adopted in adsorption of a large amount of harmful organic matters in exhaustgas, so that exhaust gas processing effect is improved greatly. The gas monitoring device is adopted for monitoring of the contents of main harmful organic matters in the exhaust gas introduced intothe system and discharged out of the system.

The invention discloses a high cleaness alcohol hydrogen oil for spark ignition internal combustion engine and a preparation method thereof. The methanol fuel is composed of the following components by weight: 34.5-67 parts of gasoline, 31.5-58 parts of methanol and 1.5-7.5 parts of additives, wherein the additives include a performance improving agent, an antioxidant, an activator, an antiknock agent, a stabilizer, an antioxidant antigum inhibitor, a dispersant, a pour point depressant, a catalyst, a metal deactivator, an efficient oxidant, an efficient metal corrosion inhibitor, a rubber swelling inhibitor and an anti-wear lubricant. The invention solves the problems of corrosivity, material swelling property, heat resistance, difficult cold start, unstable combustion and foam production in the methanol fuel of the prior art.

The invention discloses energy-saving and environment-friendly crab cultivation equipment, and belongs to the technical field of aquaculture. The equipment includes an aquaculture tank arranged on a soil layer, the bottom of the aquaculture tank is provided with discharge pipe, and the bottom of the aquaculture tank is provided with a sewage collection chamber, which is formed by connecting a netplate with the wall of the aquaculture tank. At least two filter balls are arranged on the net plate, and the equipment can effectively improve the water quality of the aquaculture water body, promotethe growth of the crabs, and have high crab cultivation benefit. The quality of the crabs is good.

The invention discloses an environment-friendly core drilling rig for drilling complex sand and pebble formations, which comprises a chassis with a crawler-type walking mechanism, an operating platform, a mast frame, a flip-type mast, a mast lifting cylinder, a shackle chuck, and a drilling rig power head , drill pipe, casing, hoist, diesel engine and manually operated valves, an environmental recovery system used in conjunction with drill pipe and casing, a double-drive hydraulic motor set on the drilling rig power head, a double-drive hydraulic pump set, and a split drive box. The invention realizes the adjustment of the output speed of the drilling rig through the double-drive hydraulic motor group and the double-drive hydraulic pump group, and can combine four speed modes in pairs, and the speed adjustment range is wider, which not only meets the low-speed impact rotary drilling It can also meet the needs of high-speed diamond rotary drilling. It has higher efficiency and stronger application functions. Moreover, by setting up an environmental protection recovery system to recover and treat the sundries generated by drilling, it can avoid polluting the surrounding environment and affecting the health of operators.

The invention relates to equipment for building construction, in particular to concrete mixing equipment for building construction. The concrete mixing equipment comprises a U-shaped base, a lifting-type mixing mechanism, a discharging assembly, a mixing cylinder, a rolling-type mixing assembly, an alternate conveying mechanism and filler box assemblies. The concrete mixing equipment is characterized in that the mixing cylinder is fixedly installed on the U-shaped base, the lifting-type mixing mechanism is fixedly installed on the U-shaped base, the discharging assembly is fixedly installed atan opening of the mixing cylinder, the rolling-type mixing assembly is fixedly installed on the U-shaped base, and is meshed with the lifting-type mixing mechanism, the mixing cylinder is fixedly connected with the alternate conveying mechanism, and the filler box assemblies are slidably installed in grooves formed in the alternate conveying mechanism. The concrete mixing equipment has the function of conveniently adding materials into the equipment, can continuously add the materials, and saves labor hours. The equipment has various mixing modes, can uniformly, sufficiently and quickly mix the materials, and has the cleaning function so as to guarantee that the materials are discharged thoroughly.

This invention relates to a fuel methyl alcohol and its additive, in which, the additive is prepared by the following materials in volume: MTBE 15-20%, 2, 2-dimethylpropane 15-20%, n-butyl alcohol 10-15%, alicyclic acid amine 20-25%, nitroacid liquid 5-10% and isopropyl ether 15-20%, and said fuel methyl alcohol is prepared like this: methyl alcohol 80-90% and additive 10-20%.

The invention discloses an environment-friendly core drilling method for a complex sandy cobble stratum. The environment-friendly core drilling method comprises the step that an environment-friendly core drilling machine is configured and debugged, negative-pressure suction is generated by an environment-friendly recovering system which is completely in butt joint with a drill rod and a casing ofthe environment-friendly core drilling machine, thus, various impurities, such as solid-liquid dust, sprayed out by the top end of the casing during construction are recovered, then a solid-liquid part is separated out, gas dust is filtered and collected, and the effect of clean air discharging is achieved. According to the environment-friendly core drilling method, through a double-driving hydraulic motor set and a double-driving hydraulic pump set, the output speed of the drilling machine is adjusted, four rotating-speed modes can be achieved through in-pair combination, the speed adjustingrange is wider, the low-rotating-speed percussive-rotary drilling demand is met, the high-rotating-speed diamond rotary drilling demand can be met, the method is high in efficiency and higher in application function, and by arranging the environment-friendly recovering system, the impurities generated during drilling are recovered and treated to avoid the situations that the surrounding environment is polluted and health of operating personnel is influenced.

The invention relates to an underfeed and reverse-burning type burner having the advantages of more complete fuel burning and cleaner exhausted flue gas. The underfeed and reverse-burning type burner comprises a box body, fuel conveyors and a blower device, wherein a grate is arranged in the box body; fuel troughs are arranged in the middle of the grate; an air chamber is formed by space between the outer side surface of the grate and the inner side surface of the box body; an annular partition board is further arranged in the box body, and the upper surface of the partition board makes contact with the outer side surface of the grate; the part, located above the top surface of the partition board, of the grate is the upper grate part, and the part, located below the top surface of the partition board, of the grate is the lower grate part; the air chamber is divided into an upper air chamber and a lower air chamber by the partition board, the upper air chamber is communicated with the upper grate part, and the lower air chamber is communicated with the lower grate part; an output end of each fuel conveyor extends into the corresponding fuel trough; the blower device comprises a blower and an air delivery pipe communicated with an outlet of the blower, an upper air channel and a lower air channel isolated from each other are formed in the air delivery pipe, the upper air channel is communicated with the upper air chamber, and the lower air channel is communicated with the lower air chamber.

The invention discloses a waste liquid combustion treatment system. The system comprises a waste liquid combustion device, a heat recovery heat exchanger and a tail gas treatment device; the waste liquid combustion device comprises a collecting tank and a high-pressure air source, the collecting tank is connected with a waste liquid combustion furnace through a waste liquid pipe; the waste liquidcombustion furnace comprises a furnace body, a refractory mud layer is arranged on the inner wall of the furnace body, the lower end of the furnace body is closed, and an opening is formed in the upper end of the furnace body; the high-pressure air source communicates with the waste liquid pipe through a high-pressure air pipe, and an igniter is arranged at an opening of one end, extending into the furnace body, of the waste liquid pipe; the heat recovery heat exchanger comprises a heat exchange barrel which is vertically arranged; and the tail gas treatment device comprises a tower body, a water tank is arranged at the bottom of the tower body, a tail gas inlet is formed in the side wall of the tower body arranged on the water tank, two layers of porous plates are arranged at intervals inthe portion, above the tail gas inlet, of the tower body, a filling material is arranged on each porous plate, and the top end of the tower body is connected with a condenser through a tail gas outlet pipe. According to the system, liquid fuel waste liquid generated in a laboratory can be sufficiently combusted, heat generated by combustion can be recycled, and harmful components in the tail gascan be fully absorbed.

The invention provides a siphon oil discharging device for an oil tank truck. The siphon oil discharging device comprises a main oil discharging connecting pipe, wherein one end of the main oil discharging connecting pipe stretches into a main oil discharging tank truck and an auxiliary oil discharging connecting pipe, one end of the auxiliary oil discharging connecting pipe stretches into an auxiliary oil discharging tank truck and a connecting pipe, the two ends of the connecting pipe are connected with the other end of the main oil discharging connecting pipe and the other end of the auxiliary oil discharging connecting pipe in a sealed mode through top quick connectors respectively, an exhaust pipe connector and an exhaust assembly are arranged at the end, close to the main oil discharging tank truck, of the connecting pipe, and the exhaust assembly is connected with the exhaust pipe connector and is used for exhausting initial gas inside the siphon oil discharging device. The invention further provides an oil discharging method based on the oil discharging device, by means of the oil discharging method of the siphon oil discharging device for the oil tank truck, the beneficialeffects that fixed facility construction is reduced, the operation time is shortened, and personnel operation is facilitated can be achieved, the oil discharging efficiency of the oil tank truck is improved, and the application range of the oil tank truck is widened.

The invention relates to an oil fume exhaust device for a kitchen, which is characterized by also comprising a combined flue plate. The lower end of a collecting flue panel is provided with a through hole; the combined flue plate is arranged in the through hole of the collecting flue panel; both sides of the combined flue plate are provided with guide tracks capable of moving up and down; the combined flue plate is arranged in the collecting flue panel through a guide track bracket; a rotating flue is arranged on the combined flue plate and comprises a rotating fume tube, a U-shaped fixed fume slot, a rotating shaft and an oil baffle plate; the lower end surface of the rotating fume tube is provided with an absorbable substance, and the absorbable substance is absorbed on the U-shaped fixed fume slot when the rotating fume tube is positioned on a vertical position; and in addition, a collecting flue can be horizontally divided into an upper collecting flue and a lower collecting flue, both sides of the upper collecting flue and the lower collecting flue are respectively connected with slide tracks, the slide tracks are mutually connected and positioned through retaining screws, and the upper collecting flue is sleeved into the lower collecting flue. When in use, the height of the rotating fume tube can be regulated freely as required and the invention has the advantages of cleaner oil fume exhaust, kitchen environment pollution prevention, human health favorableness, convenient use and easy cleaning.

The invention is related to an electric precipitator which an inner housing is divided into several separate section (chamber) so as to supply mixed air to the each section and the dust in the mixed air collect at honeycomb type dust collector of the each section evenly. Therefore, the efficiency of precipitator is improved and the capacity grows larger naturally. The precipitator has a chamber inside and the chamber is composed of several housings devided by separating plate, air inlet equipped at the front of the housing, several inlet guide tubes guiding mixed air into the housing, honeycomb type dust collector, several discharge poles, outlet guide tube and outlet.

The invention discloses a filtering module for separating over-spray paint mist in airflow. The filtering module comprises a filtering structure mounted in a shell, an air inlet is formed in one end of the shell, an air outlet formed in opposite other end, and the filtering structure sequentially forms a baffling area and a multilayer filtering area from the air inlet to the air outlet; the baffling area comprises at least two layers and is formed by arranging a plurality of baffling plates with U-shaped opening structures in parallel, the baffle plates on the same layer are spaced by a certain distance to form a baffling air channel, the positions of every two adjacent layers of baffle plates are staggered, the direction of each U-shaped opening is opposite to the advancing direction of air flow, and the space in each U-shaped opening is a paint storage chamber and is used for changing the advancing direction of the entering air flow to make paint mist particles directly collide withthe baffle plates and be captured in the paint storage chamber; and the multilayer filtering area is formed by folding a plurality of layers of sheet-shaped or strip-shaped filtering materials which are attached together in an S-shaped mode, and the multilayer filtering area comprises a coarse filtering layer, a fine filtering layer and a supporting layer according to the airflow passing sequenceand is used for enabling airflow flowing out of the baffling area to flow through, be filtered and then be discharged. The filtering module is good in filtering efficiency.

The invention provides a medical adjustable reduced-pressure washing device used for gastrointestinal department nursing, and relates to the technical field of medical apparatus and instruments. The medical adjustable reduced-pressure washing device used for the gastrointestinal department nursing comprises a main box body, wherein four corners of the bottom end of the main box body are independently fixedly provided with a supporting rod; the bottom ends of the four supporting rods are fixedly connected with a bottom plate; the top end of the main box body is fixedly connected with a waste gas processing chamber; the inner end of the main box body is provided with a negative pressure chamber and a pressurization chamber; the inner side wall, which is near the waste gas processing chamber, of the inner end of the negative pressure chamber is fixedly provided with a negative pressure pump; the outer end of the negative pressure pump is provided with a first protection shell; and the output end of the negative pressure pump is fixedly connected with a negative pressure pipe. The invention provides the medical adjustable reduced-pressure washing device used for the gastrointestinal department nursing, the device can realize enterocoelia pressure reduction, drainage and washing and also can carry out sterilization and peculiar smell removal processing on accumulated gas, and meanwhile, the whole device is conveniently used.