586results about How to "Prevent backflow" patented technology

This utility model relates to the field of drilling technology for soil or rock layers, specifically to a one-way bypass valve for a screw drill and the screw drill itself. The drill includes a one-way bypass valve for unidirectional drilling fluid flow. The one-way bypass valve includes a valve body with a valve sleeve inside its inner bore. A one-way valve is located at the outlet end of the valve sleeve. The one-way valve includes a one-way valve seat with a support plate at the end furthest from the valve sleeve. The support plate has a drain hole for drilling fluid passage. A compression spring is also provided on the support plate, and a valve block is located at the other end of the spring. The one-way valve seat has a shoulder near the valve sleeve to stop the valve block. The spring force causes the valve block to abut or disengage from the shoulder, thus closing or opening the one-way valve seat. The compression spring in this utility model is positioned below the valve block, preventing the valve block and spring from being washed away by the drilling fluid with significant impact force, thereby improving the reliability of the entire device.

This invention relates to a composite polishing structure design and polishing method for wafer-level polishing processes. The composite polishing structure design includes a disk body with a positioning groove at the center of its upper end. An upper Tesla groove, a lower Tesla groove, and an annular channel are arranged on the disk body around the positioning groove. The upper and lower Tesla grooves are arranged in a circumferentially spaced array and extend radially. The upper and lower Tesla grooves are arranged vertically and circumferentially adjacent. The inner ends of both the upper and lower Tesla grooves penetrate the positioning groove, and their outer ends penetrate the outer circumferential surface of the disk body. The annular channel is arranged in a radially spaced ring around the disk body and penetrates both the upper and lower Tesla grooves. This invention forms an integrated fluid guidance and waste chip discharge channel through the double-layer Tesla grooves, improving the utilization efficiency and chip removal capacity of the polishing fluid.

The utility model relates to a kind of pulverizing system with circulating purification including filter, vacuum device, operating position, first isolator, the pulverizing equipment of pulverizing material, the filter bag of filtering powder and the second isolator of intercommunication first isolator;Filter and vacuum device intercommunication second isolator;The outlet of pulverizing equipment intercommunication filter bag;Filter bag's air outlet is connected by filter;Operating position is respectively distributed on first isolator and second isolator.Solved the problem that the gas condition in isolator in prior art scheme is limited to the filtration of external gas.

This utility model relates to the field of urine collection bag technology and discloses a urine collection bag for bladder irrigation in urological patients. It includes a lifting arm and a urine collection bag. A hook is fixedly connected to the middle of the upper surface of the lifting arm, and a warning light is installed in the middle of one side of the lifting arm. A power supply is installed inside the lifting arm. Slides are formed on both sides of the lifting arm. A conductive block is fixedly connected to one side of the bottom wall of the slide, and a spring is fixedly connected to the other side of the bottom wall of the slide. An inlet pipe is fixedly connected to one side of the upper surface of the urine collection bag, and a drain pipe is fixedly connected to the middle of the lower surface of the urine collection bag. This urine collection bag for bladder irrigation, through the design of an observation window and built-in scale lines, reduces the interference of bag deformation and light refraction on readings. Nursing staff can intuitively and accurately read the volume of irrigation waste fluid, ensuring accurate recording of intake and output balance, and providing reliable data support for assessing the patient's bladder irrigation effect, bleeding, and renal function recovery.

According to the semiconductor product processing equipment and the mist discharging system, the mist discharging fan is connected with the rack through the damping mechanism, vibration of the mist discharging fan can be effectively prevented from being transmitted to the rack, the machining precision can be improved, the damping mechanism can adopt different structures according to needs, and when a connector is adopted, the connector is connected with the mist discharging fan through the damping mechanism. The connector is connected to the top of the first supporting rod through the first damping connecting base and connected to the bottom of the second supporting rod of the rack through the second damping connecting base, the second supporting rod can effectively limit the connector, and the problem that the connector topples due to the fact that the mist discharging fan is arranged on the first side of the connector is solved; shear force borne by bolts for connecting the first and second damping connecting seats with the first and second supporting rods is reduced, and the structural stability and safety of the damping structure are effectively guaranteed. When the bracket is adopted, the structure is simple, and a two-stage damping structure is adopted, so that the vibration of the fog exhaust fan can be isolated from the rack to the greatest extent, and the influence on the main shaft is avoided.

The utility model relates to the technical field of oil well liquid drainage, in particular to a negative pressure liquid drainage device. Comprising an upper connector, a sealing conical surface is formed in the upper connector, the lower end of the upper connector is fixedly and hermetically connected with an outer cylinder, the lower end of the outer cylinder is fixedly and hermetically connected with a lower connector, a piston blind plate is arranged in the lower connector, connected with the lower connector through a shear pin and in sealed contact with the upper connector, and a screen pipe is fixedly and hermetically connected in the lower end of the piston blind plate. The lower end of the screen pipe extends to the position below the lower connector and is blocked. The screen pipe and the piston blind plate are automatically released through fracture of the shear pin, external power or manual intervention is not needed, instant communication of a shaft and an oil pipe column is achieved, and the liquid drainage starting time is remarkably shortened.

The utility model discloses an integrated heat exchanger suitable for frozen drying machine, including the casing, the casing is equipped with the outlet of drying gas, the inlet of water gas, the coolant outlet and the coolant inlet from top to bottom, the upper portion is equipped with the heat exchanger in the casing, still be equipped with the evaporimeter in the casing, still be equipped with the gas liquid separation chamber of gas in the bottom of casing, the evaporimeter is located heat exchanger below and communicates with the heat medium outlet of heat exchanger, the backflow channel of gas is established between evaporimeter and heat exchanger and the inside of casing, and the gas outlet of evaporimeter and the cold medium inlet of heat exchanger communicate with backflow channel. The utility model divides and sets up the upper and lower end in the casing with heat exchange and evaporation function, can simplify the structure setting in the casing, and the production cost is simplified, after setting evaporimeter below heat exchanger, can realize the step -by -step cooling of airflow from top to bottom, is favorable to the gathering of condensate in the bottom of casing and gas -water separation in the cooling process, thereby guaranteeing the drying effect of gas.

The application belongs to the technical field of tunnel soil body reinforcement, and particularly discloses a device and method for reinforcing soil body of a tunnel starting well portal by injecting microbial slurry, which comprises a storage component, a transmission component and an injection component, the storage component comprises two constant-temperature boxes, and the two constant-temperature boxes are respectively used for placing bacterial liquid and cementing liquid; the transmission component comprises a multi-connection micro high-pressure pump, and two independent liquid channels are arranged in the pump; the injection component comprises a grouting guide pipe and a rotating grouting head, the grouting guide pipe comprises two hollow semi-cylindrical pipes, and the longitudinal straight faces of the two hollow semi-cylindrical pipes are attached together to form a cylinder with two independent longitudinal cavities; the two independent longitudinal cavities are respectively connected with the two constant-temperature boxes through different liquid channels; a plurality of spray holes are longitudinally and uniformly arranged on the arc faces of the hollow semi-cylindrical pipes; and the rotating grouting head is used for driving the grouting guide pipe to rotate. The application can reduce the internal loose problem of the soil body reinforced by the microorganism, and improve the reinforcement effect of the soil body of the tunnel starting well portal.

This invention discloses a dual-motor hair dryer, relating to the field of hair dryer technology. It includes a housing, a handle, and a mounting cover installed inside the housing. It also includes a dual-system blowing assembly, a drive assembly, a first adjustment assembly, and a second adjustment assembly located inside the mounting cover. In use, the right-side main motor fan system, through the cooperation of the air guide tube, main air duct, and inner air duct, delivers gas to the inner cylinder, evenly passing through the heating element. Simultaneously, the left-side auxiliary motor fan system delivers gas to the outer air duct through the air guide tube, auxiliary air duct, and flow equalization pipe. The gas flows through the annular air cavity, forming an annular air curtain that surrounds the hot air along the central axis. The annular cold air curtain and the hot air along the central axis are coaxially superimposed. Furthermore, the main and auxiliary air ducts are isolated, ensuring that the high temperature of the main air duct does not affect the auxiliary motor, resulting in high operating efficiency for the auxiliary motor. The main motor also experiences stable load due to the smooth air duct, significantly improving the overall energy efficiency and further achieving energy savings.

The utility model discloses an automobile washer with a backflow prevention function, and relates to the field of automobile washers. The automobile washer with the backflow prevention function comprises a washer unit and a backflow prevention unit. The backflow preventing unit is composed of a sleeve, a valve seat, a movable disc, a connecting rod, a valve plate, a spring and a collecting tank. The washer unit comprises a water tank, a connecting pipe, a water pump and an output pipe. The two ends of the sleeve are communicated with the connecting pipe and the output pipe respectively. According to the automobile washer with the backflow prevention function, through the synergistic effect of the valve seat, the movable disc, the valve plate and the spring, when the washer works normally, water flow pushes the movable disc and the valve plate to move, and the water flow smoothly passes through the washer; when the automobile washer stops working, the elastic force of the spring enables the valve plate to abut against the valve seat rapidly and tightly, washing liquid is prevented from flowing back, pollution to other parts in a system caused by the flowing-back liquid is effectively avoided, cleanliness of the washing liquid is guaranteed, and the overall performance of the automobile washer is improved.

The invention relates to the technical field of drilling devices, and discloses a drilling device for machining of automobile non-standard parts, through the arrangement of a cleaning assembly, after a workpiece subjected to drilling machining is taken out from a machining table, a mounting plate of the cleaning assembly moves towards a chip groove, and the chip groove is cleaned; the side scraping plates are put down to scrape the bottoms of the collecting grooves in the two sides of the machining table in the moving process, waste on the machining table is blown away through the air nozzles, the main scraping plate is put down by the mounting plate after the mounting plate passes through the machining table, and the cleaned waste finally falls into the chip discharging groove to be discharged under pushing of the side scraping plates and the main scraping plate. The cleaning assembly is arranged on the collecting tank, so that the collecting tank and the machining table are cleaned up, the situation that a next to-be-machined workpiece is scratched by residual chippings on the machining table is prevented, the machining precision of the workpiece is improved, meanwhile, the side scraping plate and the main scraping plate transversely arranged in the collecting tank prevent waste materials from flowing back in the cleaning process, and the cleaning effect of the cleaning assembly is guaranteed.

The application discloses a kind of stainless steel gutter side TPO fixed structure, including galvanized support by pin fixed on gutter keel;With the fixed stainless steel gutter socket type fixed folding piece of stainless steel;Roof TPO waterproof roll goods are fixedly connected with socket type fixed folding piece of stainless steel and galvanized support device.The application adopts galvanized support piece, and it has gutter fixing and TPO roll support function, improves the stability of overall structure;The application adopts socket type fixed folding piece of stainless steel and is welded with gutter, to ensure reliable connection, excellent waterproof performance;TPO waterproof roll goods in the application and fixed folding piece are mechanically connected and sealed by glue injection, to enhance wind lifting capacity and waterproof tightness;The structure and process of the application can ensure overall sealing effect even in the case of TPO non-full-paved gutter, to prevent rainwater from pouring into indoor.

The invention relates to the technical field of 3D printers, in particular to a spray head assembly for a 3D printer and the 3D printer. The spray head assembly comprises a plurality of feeding pipes, a nozzle module and a movable part, each feeding pipe is provided with an inlet hole, and the inlet holes are used for receiving consumables in a solid state form; the nozzle module is provided with an outlet hole, the inlet hole corresponding to each feeding pipe is communicated with the outlet hole, the outlet hole is used for extruding consumables in a liquid form, and the outlet hole is smaller than the inlet hole; and the movable part can selectively move relative to the nozzle module, and the movable part is used for preventing liquid consumables from flowing back to the feeding pipe from the nozzle module. The multi-inlet and one-outlet nozzle assembly aims at solving the problem that liquid consumables flow back in an existing multi-inlet and one-outlet nozzle assembly.

The utility model relates to photoresist production auxiliary equipment technical field, concretely relates to an insulating carbon black storage device for photoresist, including storage box, the top of storage box is connected with feed inlet, the first solenoid valve is installed in the communication of feed inlet and storage box, the output port department of storage box bottom is provided with the second solenoid valve, still including fixed mounting on the turbine molecular pump of storage box outer side wall, the output end of turbine molecular pump is connected with the air cylinder of fixed mounting in the outer side wall of storage box, the top lift sliding of air cylinder is inserted with nitrogen tube, the output end of nitrogen tube is inserted to storage box, and is equipped with one -way exhaust valve, the utility model discloses nitrogen tube height is adjusted dynamically through lift cylinder, makes it always close carbon black material surface, and nitrogen fills the space not being occupied by material directly, and replacement efficiency improves 30% or more, and nitrogen consumption reduces 20%-40%, and turbine molecular pump provides high -purity nitrogen delivery, prevents the back flow in combination one -way exhaust valve, ensures the inert environment of fast establishment.

This invention relates to the field of condensate recovery technology, specifically a closed-loop condensate recovery device, comprising a tank with a water outlet pipe at the bottom. The tank is divided into three zones—a central steam buffer zone, a lower condensate collection zone, and an upper negative pressure condensation zone—by two horizontal baffles. This closed-loop condensate recovery device eliminates the need for additional power components such as pumps. It relies on the downward pressure difference of the condensate in the negative pressure condensation zone and the negative pressure generated by steam condensation as the drainage driving force. It fully utilizes the system's own energy, eliminating dependence on external power and significantly reducing operating energy consumption. The condensate introduced by the downward pressure drainage pipe creates a downward impact, which, combined with the negative pressure introduced by the negative pressure venting pipe, forms a dual drainage drive, providing stronger power and higher efficiency than traditional single gravity drainage. Simultaneously, it drives the condensate in the pipe to repeatedly flush, comprehensively covering the entire pipe area and thoroughly removing impurities and silt from different sections, offering better anti-clogging performance than unidirectional disturbance.

The utility model discloses a kind of organic pollutant purification equipment for electroplating solution, it is related to electroplating solution processing technical field.The utility model includes box, the box is internally and fixedly connected with isolating plate, the isolating plate one side is fixedly connected with heating plate, the box top side is fixedly connected with pneumatic cylinder, the pneumatic cylinder output end is fixedly connected with push plate, the box top side is communicated with exhaust pipe.The utility model is provided with heating plate and gas pipe, significantly improve the mixing uniformity and pollutant degradation efficiency of electroplating solution, heating plate can reduce electroplating solution viscosity, promote the diffusion reaction of oxidant or flocculating agent, and the air or ozone input by gas pipe can further strengthen mixing effect, make organic pollutant contact purification medium fully, and, push plate driven by pneumatic cylinder can drive electroplating solution to flow, avoid local reaction insufficient, to improve overall purification efficiency.

The utility model provides a standing device capable of accurately controlling blanking. The standing device capable of accurately controlling the blanking comprises a standing body plate, a blanking track block, a main driving rod, a gear cutter, a block-shaped cutter and a blanking elastic piece. Electronic components are conveyed between the guide grooves of the two discharging track blocks, the main driving rod is rotationally connected with the station body plate, the gear cutter is fixedly connected with the main driving rod, and the block-shaped cutter is fixedly connected with the station body plate. And the gear cutter rotates and is matched with the block-shaped cutter to shear the pins of the electronic components. The discharging elastic piece is located between the two discharging track blocks, one end of the discharging elastic piece is fixedly connected with the station body, and the other end of the discharging elastic piece extends between the two guide grooves. According to the positioning device capable of accurately controlling blanking, the blanking elastic sheet is arranged, so that the stability of pin cutting of electronic components can be improved, backflow of the electronic components which already pass through the blanking elastic sheet can be prevented, meanwhile, the electronic components which do not pass through the blanking elastic sheet are prevented from being excessively conveyed, and blanking of the electronic components can be accurately and stably controlled.

A discharging device for a dishwasher solid detergent dispenser includes a conveying channel and a discharging channel. A pushing component is movably mounted on the conveying channel, and a door opening / closing component is movably mounted on the discharging channel. The pushing component and the door opening / closing component are linked together by a synchronization mechanism. In this invention, the pushing component pushes the solid detergent from the conveying channel into the discharging channel, and the door opening / closing component opens the discharging channel, allowing the solid detergent to pass smoothly through and reach the dishwasher's inner tub. Then, the pushing component resets, and the door opening / closing component closes the discharging channel, preventing moisture from the dishwasher's inner tub from flowing back into the discharging channel and reaching the solid detergent in the conveying channel, thus preventing the solid detergent from dissolving.

The utility model discloses a nutrition pump valve which comprises a main valve body assembly arranged in an outer shell, the interior of the main valve body assembly is divided into a main flow guide cavity and an adjusting cavity through a partition plate, the end, away from the adjusting cavity, of the main flow guide cavity is provided with a conical flow guide groove which is coaxially communicated, and the caliber of the end, close to the adjusting cavity, of the conical flow guide groove is larger than that of the end away from the adjusting cavity. The adjusting cavity is communicated with the outside through a liquid inlet pipeline, and the tail end of the conical flow guide groove is communicated with the outside through a liquid outlet pipeline. According to the nutrition pump valve, the conical valve element with the adjustable position is arranged in the main valve body, transmission structures such as the threaded rod, the gear set and the rotary knob are matched, fine adjustment of nutrient solution flow is achieved, adjustment response is stable, the visualization degree is high, infusion precision is improved, and the nutrition pump valve is convenient to use. And individual requirements of different patients in clinical use can be met.

The utility model discloses annealing equipment for stainless steel plate production, which comprises a box body, a door plate arranged on one side of the box body, a cooling assembly arranged in the box body, a mounting box arranged on the box body, an extraction assembly arranged on one side of the mounting box, a conversion assembly arranged in the mounting box, a fixing plate arranged on one side of the fixing plate, and an inclined pipe arranged on one side of the fixing plate. A sponge block is arranged on the other side of the fixing plate and connected with one end of a mounting frame, a sponge block is also arranged at the other end of the mounting frame, an extrusion plate is arranged at the end of the sponge block, a condensation pipe is mounted in the mounting frame, a drainage pipe is arranged on one side of the mounting box, and a driving mechanism is arranged in the mounting box. According to the annealing equipment for stainless steel plate production, water vapor is conveniently recycled through the conversion assembly, so that water resources are saved, a sponge block can be regularly extruded through an extrusion plate driven by a motor, absorbed water is discharged, and the water vapor treatment efficiency is further improved.

The application discloses a kind of based on airflow sorting feed raw material multistage impurity removal equipment, belong to feed processing equipment technical field;The equipment includes rack, cloth feed structure, multistage crossflow sorting structure, gradient wind speed regulation structure, impurity collection mechanism and airflow purification structure;The cloth feed structure is used to uniform cloth and reduce raw material impact breakage;The multistage crossflow sorting structure realizes multistage step-by-step sorting, avoids impurity secondary mixing;The gradient wind speed regulation structure matches grading wind speed according to raw material characteristics, improves impurity removal precision;The impurity collection mechanism realizes light, medium, heavy impurity grading collection and rapid cleaning;The airflow purification structure carries out multistage processing to dust-containing waste gas, realizes standard discharge;The application solves the technical defects of low precision, high energy consumption, easy to block hole of traditional impurity removal equipment, can realize high-precision, low breakage, continuous high-efficiency impurity removal processing.

The application relates to the aerosol generating technical field and provides an aerosol generating article and an aerosol generating device. The aerosol generating article comprises a substrate section and a front plug section. The substrate section is used for generating an aerosol. The front plug section comprises a first part and a second part. The first part is arranged at one end of the substrate section along a first direction. The second part is connected to one end of the first part close to the substrate section, and the second part extends into the substrate section. The cross-sectional area of the second part is smaller than that of the first part in a cross section perpendicular to the first direction. The aerosol generating article provided by the application can improve the connection stability of the substrate section and the front plug section.

The utility model relates to the technical field of clothes treatment, in particular to a clothes treatment device and combined clothes treatment equipment. By arranging the adapter, the first air port and the second air port are respectively communicated with the corresponding cylinder bodies, so that the first water outlet and the second water outlet are respectively consistent with the internal air pressure of the corresponding cylinder bodies, and the two washing cavities can operate simultaneously or independently; the siphonage phenomenon of the two drainage pipes which are draining water due to the fact that internal air is emptied is avoided, and the problem of sewage reverse flow caused by the siphonage phenomenon is prevented. In addition, the first drainage pipe, the second drainage pipe, the first air pipe and the second air pipe can be conveniently connected, supported and positioned through the adapters, the layout of the drainage assembly is more compact through the adapters, the pipeline length is reduced, the water flow resistance is reduced, and the drainage efficiency is improved.

This invention relates to the field of electrolyte filling technology, and specifically discloses a vacuum filling machine for electrolyte filling in lithium battery processing. The machine includes a worktable, a transmission component fixedly connected to the inner side of the worktable, a feeding component slidably connected to the inner side of the worktable, and the inner side of the feeding component fixedly connected to the output end of the transmission component. A bracket is fixedly connected to the top of the worktable. In this vacuum filling machine for electrolyte filling in lithium battery processing, the scraper, relying on a contact shaft, a first spring, and an arc-shaped guide plate, forms an elastic floating structure. This allows it to closely conform to the side contour of the filling needle, scraping away waste liquid and impurities without dead angles, while avoiding rigid contact that could scratch the needle. The arc-shaped design of the inner side of the guide plate directs and collects the scraped waste liquid, preventing random splashing and structurally reducing waste liquid residue and crystal accumulation. The scraped waste liquid can be quickly drawn into the collection mechanism by negative pressure through the slot plate and connecting pipe.

This invention provides a battery system and a battery cabinet. The battery system includes: a cooling device; a main liquid supply pipe, the upper end of which is connected to the liquid supply port of the cooling device, and multiple connecting ports are spaced apart along its extension direction; the multiple connecting ports are connected one-to-one with the liquid inlets of multiple battery packs; the drain ports of the multiple battery packs are all connected to the liquid inlet of a return liquid pipeline, and the liquid outlet of the return liquid pipeline is connected to the liquid return port of the cooling device; a liquid storage component is provided on the return liquid pipeline, and the liquid inlet and liquid outlet of the liquid storage component are both connected to the cavity of the return liquid pipeline; the top of the liquid storage cavity has a top opening that communicates with the atmospheric environment. The lower end of the main liquid supply pipe is configured to be openable or closedable with the atmospheric environment. Alternatively, the venting position of the main liquid supply pipe is configured to be openable or closedable with the atmospheric environment, and the lower end of the main liquid supply pipe is either closed or openable or closedable with the atmospheric environment; the venting position is located above the multiple connecting ports.

This invention relates to the field of motor control technology, specifically to a control method and apparatus for preventing backflow of pump-generated voltage based on a synchronous BUCK circuit. The method includes: executing switching control of the synchronous BUCK circuit according to a set frequency and duty cycle of the switching transistors, and recording the values ​​of Vo and Vin once per switching control cycle; upon reaching a predetermined judgment period, reading the Vo and Vin values ​​recorded in each switching control cycle within the judgment period; determining whether a pump-generated voltage has occurred based on the changes in the Vo and Vin values ​​recorded in each switching control cycle within the judgment period; and if so, turning off both switching transistors Q1 and Q2. By acquiring the values ​​of Vin and Vo, the state of the synchronous BUCK circuit is determined using these two voltage values. When it is determined that a pump-generated voltage has occurred, both switching transistors Q1 and Q2 are turned off. That is, by controlling the switching state and duty cycle of Q1 and Q2, backflow of pump-generated voltage energy is prevented.

The utility model discloses a resin reaction kettle water vapor removing device which comprises an outer box body, a support is fixedly connected to the outer side wall of the outer box body, a reaction kettle is fixedly connected to the interior of the outer box body, a water storage cavity is formed between the reaction kettle and the outer box body, and a feeding port is formed in the top of the reaction kettle and penetrates through the outer box body. Water vapor removing mechanisms are symmetrically arranged on the left side wall and the right side wall of the reaction kettle, and a bidirectional driving device for driving the water vapor removing mechanisms to operate is arranged on the outer side of the outer box body. Through the arrangement of the water vapor removing mechanism and the bidirectional driving device, the overall operation cost of the device can be lower, a double-shaft motor is installed outside, heat dissipation is easier, and the service life of the device is prolonged; through the arrangement of the exhaust port, the steam is exhausted through the exhaust port, and the fan blades are matched, so that the air circulation between the reaction kettle and the outside is smoother, and the steam exhaust efficiency is improved.

The utility model belongs to the technical field of spirulina cultivation equipment, and particularly discloses a spirulina cultivation liquid carbon source supplementing device which comprises a supplementing cover, a first ventilation pipe and a second ventilation pipe are connected to the lower portion in the supplementing cover, a plurality of air outlet holes are formed in the first ventilation pipe and the second ventilation pipe, and the first ventilation pipe is connected with an air supply pipe. The second breather pipe is connected with a circulating pipe, the other end of the circulating pipe is connected with a fan, the fan is connected with an exhaust pipe, the exhaust pipe is communicated with the top of the supplementing cover, a carbon dioxide sensor is installed on the exhaust pipe, an electromagnetic gas valve is installed on the gas supply pipe, the carbon dioxide sensor is in communication connection with the controller, and the electromagnetic gas valve is controlled by the controller. The first ventilation pipe and the second ventilation pipe are arranged below the liquid level of the breeding liquid and provided with the air outlet holes, carbon dioxide is introduced into the breeding liquid, the contact time and the contact area of carbon dioxide gas and the breeding liquid can be increased in the floating process of the carbon dioxide, and the carbon dioxide absorption efficiency of the breeding liquid is improved.

The present application belongs to the technical field of cigarette production and manufacturing, and discloses a refrigerating capacity balancing system for a cigarette process refrigerating system. The system comprises a conveying pipeline, a backflow pipeline, a control module and a plurality of cooling branches. The conveying pipeline is used for conveying cooling water; the backflow pipeline is used for backflow of the cooling water; each cooling branch has a water inlet end in communication with the conveying pipeline and a backflow end in communication with the backflow pipeline, and has a cooling area between the backflow end and the water inlet end; the backflow end of each cooling branch is provided with a balancing valve, and the opening range of the balancing valve can be adjusted to control the backflow amount of the backflow end; and the control module is in communication connection with the balancing valve. When the system is used, the backflow amount of any cooling branch is kept unchanged, so that the excess cooling water can flow to other cooling branches. On the one hand, the cooling efficiency can be improved, and on the other hand, the energy consumption for conveying the cooling water can be reduced, thereby improving the environmental protection performance in the whole refrigerating process.

The utility model discloses a washing test machine for simulating washable ultraviolet-proof fabric, and particularly relates to the technical field of fabric detection, the washing test machine comprises a case, a partition plate is arranged in the case, a washing bin is arranged on one side of the partition plate, a machine bin is arranged on the other side of the partition plate, a containing assembly is mounted on the partition plate, and the containing assembly is arranged on the machine bin. A heating plate is arranged at the bottom end of the interior of the washing bin and connected with a heater arranged in the machine bin, a temperature sensor is installed in the middle of one side of the partition plate, a water level sensor is arranged above the temperature sensor, a water inlet is formed in the partition plate and connected with a water pump arranged in the machine bin, and a water outlet is formed in the water pump. A water drainage pipe is arranged at the bottom of the washing bin, supporting legs are installed at the bottom end of the machine box, an upper cover is hinged to the top end of the machine box, a lock catch is arranged between the upper cover and the machine box in a matched mode, and a sealing gasket is arranged at the connecting position of the upper cover and the top face of the washing bin. The water washing device has the advantages of being capable of improving the water washing effect, convenient to operate and observe, stable in water flow and capable of improving the detection efficiency.