27results about "Pressure exchangers" patented technology

The present application relates to the technical field of incubation bin assembly, and aims to provide an incubation bin liquid discharge device and an immunohistochemical device to solve the technical problem of low liquid discharge efficiency of the incubation bin in the prior art, which affects incubation and reaction operation. The immunohistochemical device comprises a bottom plate and an incubation bin assembled on the bottom plate, and further comprises an incubation bin liquid discharge device assembled on the bottom plate, wherein the incubation bin liquid discharge device is connected with the incubation bin in correspondence, and the incubation bin liquid discharge device comprises a transfer bin and a liquid discharge channel connected at one end of the transfer bin, the other end of the liquid discharge channel is provided with a liquid inlet, and the liquid inlet is used for butting against a waste liquid pipe at the bottom of the incubation bin; a quick liquid discharge device is connected on the liquid discharge channel or the transfer bin, and the quick liquid discharge device is used for sucking the transfer bin to quickly suck the waste liquid in the waste liquid bin into the transfer bin.

The invention discloses a fluid rapid supply device. The device comprises a vacuum tank; a plurality of flow storage tanks; a negative pressure extraction device; a plurality of control valves; a control module; a pressure sensor; wherein the vacuum tank is connected with each flow storage tank through a pipeline, the negative pressure extraction device is connected with the vacuum tank and is used for extracting negative pressure from the vacuum tank, and the control valves are respectively and independently arranged on the pipelines for connecting the vacuum tanks and the flow storage tanks and are used for controlling the communication of the corresponding vacuum tanks and the corresponding flow storage tanks; the vacuum tank has a first capacity, the single flow storage tank has a second capacity, the first capacity of the vacuum tank is greater than the second capacity of the flow storage tank, the negative pressure extraction device performs negative pressure extraction on the flow storage tank before liquid supply is started, so that the vacuum tank keeps a first negative pressure, and the control module is connected with the corresponding sensor, the control valve and the negative pressure extraction device. The control valve and the negative pressure extraction device are used for controlling the control valve and the negative pressure extraction device, so that negative pressure in the vacuum tank carries out negative pressure liquid suction on at least one flow storage tank.

The utility model relates to drainage equipment, in particular to a portable active siphon system for rapid drainage, which comprises a vacuum pump body and is technically characterized in that one side of a cavity where an impeller of the vacuum pump body is located is connected with an air exhaust pipeline, the other side of the cavity where the impeller is located is connected with an air exhaust pipeline, and the other end of the air exhaust pipeline is communicated with a negative pressure centralized control pipe. The other end of the exhaust pipeline is communicated with the atmosphere, the two ends of the negative pressure centralized control pipe are used for being connected with a siphon pipeline water inlet section and a siphon pipeline drainage section respectively, a pressure relief pipeline communicated with the atmosphere is additionally arranged on the top face of the negative pressure centralized control pipe, a first control valve is arranged on the exhaust pipeline, a second control valve is arranged on the exhaust pipeline, and a third control valve is arranged on the pressure relief pipeline. Compared with a fixed siphon drainage device, the siphon drainage device is convenient and flexible to use and low in use cost, and meanwhile, compared with a movable siphon drainage device, the automatic level is further improved, the labor intensity of workers is reduced, the drainage efficiency is improved, and potential safety hazards are reduced.

This invention discloses a rapid fluid supply device, comprising: a vacuum tank; multiple storage tanks; a negative pressure extraction device; multiple control valves; a control module; and a pressure sensor. The vacuum tank and each storage tank are connected by pipes. The negative pressure extraction device is connected to the vacuum tank and is used to draw negative pressure from the vacuum tank. The control valves are individually configured on the pipes connecting the vacuum tank and the storage tanks, and are used to control the connection between the corresponding vacuum tank and the corresponding storage tank. The vacuum tank has a first capacity, and each storage tank has a second capacity. The first capacity of the vacuum tank is greater than the second capacity of the storage tank. Before the fluid supply begins, the negative pressure extraction device draws negative pressure from the storage tanks, maintaining a first negative pressure in the vacuum tanks. The control module is connected to the corresponding sensor, control valves, and negative pressure extraction device, and is used to control the control valves and negative pressure extraction device, so that the negative pressure in the vacuum tank draws liquid from at least one storage tank.

The utility model discloses a construction joint processing device for tunnel engineering construction, including work table, rotation connection in the surface of work table electric telescopic link, the head subassembly of scraping, including fixedly connected in the connecting strip of electric telescopic link end, the material receiving groove of connecting in connecting strip one side, the scraper of fixed setting in material receiving groove inside and one end stretches out, the two connecting rods of connecting between connecting strip and material receiving groove, the connecting rod sliding passes through connecting strip, the head subassembly of scraping of through the design can to construction joint surface excess colloid and carry out the processing, because material receiving groove just designs in the outside of scraper, then no matter to the construction joint of where carries out and smooths, the colloid that falls down will drop into material receiving groove inside and completes the collection, simultaneously through the design of negative pressure cabin and suction pipe subassembly, can suck out the glue that collected in material receiving groove inside, avoids the overflow of glue, under the cooperation of above structure, can collect and handle the glue that scrapes down perfectly.

The invention belongs to the technical field of gas extraction and drainage, and discloses a negative pressure stabilizing device for gas extraction and drainage in an underground coal mine, which comprises an extraction pipeline, the lower side of the extraction pipeline is fixedly communicated with a one-way water inlet pipe, and one side, far away from the extraction pipeline, of the one-way water inlet pipe is fixedly communicated with a negative pressure drainage tank; through cooperation of the oppositely-opened shell, the dust filtering cover, the brush, the one-way water guide pipe, the sponge brush and other structures, the effect of integrating the three functions of impurity brushing, water spraying cleaning and water stain wiping is achieved, the filter screen cover is arranged outside the exhaust pipe, the situation that coal powder, rock powder and other light-weight solid impurities flow back into a pipeline along with gas flow again is avoided, and the service life of the pipeline is prolonged. When the floating ball floats upwards, the circular groove rod also moves upwards, the cambered surface extrusion block is extruded through the spiral groove to drive the oppositely-opened shell on the rotating disc to continuously rotate, and the pair of brushes located on the oppositely-opened shell abut against the inner side and the outer side of the dust filtering cover to continuously brush the inner side and the outer side of the dust filtering cover, so that the net surface is cleaned in real time.

Vacuum pump (1), in particular a self-priming vacuum pump (1), as a component of a vacuum wastewater system for emptying and flushing toilets, urinals and the like, with a collecting inlet line (3a) which is connected to an inlet (3b) in a housing (2) of the vacuum pump (1) and which is closed inside the housing (2) by a check valve (6) when the vacuum pump (1) is not in operation, optionally with a cutting device which is axially arranged and which comminutes solid substances in the wastewater, further comprising an axially arranged screw spindle which, when rotated, forms a water ring necessary for generating the vacuum and draws in the wastewater by means of vacuum, further comprising an outlet and a drive motor, characterized in that the vacuum pump (1) ▪ comprises a suction nozzle (4) arranged in the inlet (3b), which is configured such that the suction nozzle (4) is always in fluidic contact with an outer diameter (4b) of a water reserve (5); ▪ and the check valve (6) is arranged at an angle between 1° and 90° relative to a vertical axis of the inlet-suction port transition (7) and fully seals the suction port (4), wherein the suction port (4) is further arranged such that, in the event of a leak in the check valve (6), none of its inner diameters (4a) can come into fluidic contact with a level of the water reserve (5), and the suction nozzle (4) is arranged at a height to the water level that ensures a sufficient water reserve (5) for suction under all operating conditions.

A conveying device for conveying a liquid / gas mixture, in particular a crude-oil / natural-gas mixture, taken from a borehole, having a multiphase-pumping device, which can be or is coupled to a feed line and a discharge line and to which the liquid / gas mixture can be fed as a feed flow, via the feed line and via which the mixture can be discharged under increased pressure as a conveyance flow, into the discharge line, and having a recirculation line, via which a sub-flow of the liquid contained in the conveyance flow can be returned to the feed flow. The recirculation line contains an injector, through which the sub-flow is conducted, with a negative pressure being generated in the process, and which can be or is coupled to a gas line, which conducts a gas taken from the borehole. The negative pressure causes the gas to be taken in by suction.

A vacuum pump for use with a siphon system to continuously purge gases that accumulate in a high point of the siphon system, or for priming the inlet to a pump, or to create vacuum for another purpose. Siphon systems require regular purging of gases when operating for long periods of time. The vacuum pump provides a mechanism that operates in a cycling manner. A first stage of the cycle involves filling a chamber using a pressurised liquid supply, and purging all gases from the chamber. A second stage involves isolating the chamber from the surrounding environment, and then allowing the liquid in the chamber to drain into the siphon system, while at the same time gases from within the siphon system are allowed to enter the chamber. Once the liquid has drained from the chamber, the chamber is isolated from the siphon system, and the liquid filling stage is repeated. Continual cycling of this process can purge the siphon system of gases, or be used to produce a vacuum for other purposes.

The present disclosure teaches a system for treating an aqueous effluent comprising: an upflow liquid column configured to retain a fluid; a fluid inlet fluidly coupled with the upflow liquid column and positioned at about a bottom of the upflow liquid column; at least one downflow liquid column that is non-concentric with the at least one upflow liquid column; at least one aerator fluidly coupled with the upflow liquid column and operably configured to deliver a gas to the upflow liquid column such that a plurality of bubbles are formed within the upflow liquid column; a gas headspace above a top of the upflow liquid column, wherein the gas headspace is defined at least partially by a cap; an outlet fluidly coupled with the gas headspace; and a vacuum pump, wherein the vacuum pump is operably configured to create a vacuum in the gas headspace.

The utility model discloses a negative pressure pump, which relates to the technical field of negative pressure pumps and comprises a motor, a pump support body fixed on one side of the motor, a sealing plate arranged on one side of the pump support body far away from the motor, an open impeller arranged on one side of the sealing plate far away from the motor, a spiral blade arranged on one side of the open impeller far away from the motor, and a pump shell arranged on one side of the spiral blade far away from the motor. By arranging the cylinder and the spiral blade, the motor drives the spiral blade to rotate in the cylinder so that negative pressure can be generated in the cylinder, water can be conveniently sucked into the pump shell from the cylinder, and meanwhile the shape of the inner sealing plate is changed so that the water can be conveniently sucked into the pump shell. The optimized annular groove flow channel is formed in the rear cover plate of the pump body, so that a complete liquid baffle can be formed in the rear portion of the open impeller, liquid is prevented from being thrown out behind the impeller, and the liquid can efficiently rotate in the impeller and is guided into the convex flow channel along the pump cavity.

A motionless pumping design that reduces operation and maintenance costs, and enhances reliability in three aspects of pneumatics system configuration. A motionless and corrosion-resistant pump which uses the continuous generation of pressure variation push / pull force by relying on the venturi effect induced by a pair of gas ejectors together with an argon pneumatic sub-system.

The application discloses a system for co-processing hazardous waste liquid in a cement kiln, which sequentially comprises a liquid taking device, a double vacuum tank conveying device and a cement kiln atomization spraying device; wherein the liquid taking device comprises a liquid taking gun; the double vacuum tank conveying device comprises an upper vacuum tank group, a lower vacuum tank group, a vacuum pump group, a compressed air pipeline and a vacuum pipeline; the upper vacuum tank group and the lower vacuum tank group are both provided with a hazardous waste liquid inlet, a hazardous waste liquid outlet, a compressed air inlet and an exhaust port; the vacuum pump group is connected with the vacuum exhaust port of the upper vacuum tank group through the vacuum pipeline; the compressed air pipeline is connected with an external compressed air tank through a compressed air pump at the air inlet end, and is connected with the compressed air inlets of the upper vacuum tank group and the lower vacuum tank group at the air outlet end; the hazardous waste liquid inlet of the upper vacuum tank group is connected with the liquid taking gun to suck the waste liquid in a waste liquid tank; the hazardous waste liquid outlet of the upper vacuum tank group is connected with the hazardous waste liquid inlet of the lower vacuum tank group through a connecting pipeline; the hazardous waste liquid outlet of the lower vacuum tank group is connected with the cement kiln atomization spraying device; and the cement kiln atomization spraying device comprises a conveying pipeline and a high-pressure pump, a filtering device and a spray gun arranged on the conveying pipeline; the waste liquid in the lower vacuum tank group is pumped to the kiln tail of the cement kiln through the high-pressure pump, is atomized through the spray gun and is sprayed into the lower part of a C4 cyclone.

The invention discloses a steam compression condensate negative pressure drainage system, and relates to the technical field of steam compressors, the steam compression condensate negative pressure drainage system is characterized in that one end of the lower part of a steam compressor is connected with a liquid conveying pipe, the end part of the liquid conveying pipe is provided with a first valve body, one end of the first valve body is connected with a liquid inlet pipe, and the lower end of the liquid inlet pipe is fixedly provided with a liquid storage tank; the liquid discharging assembly is arranged at one end of the liquid storage tank and comprises a water collecting tank, a ball valve, a negative pressure pipe, a three-way connector, an auxiliary pipe, a second valve body and a negative pressure tank. According to the steam compression condensate negative-pressure drainage system, through the arrangement of the drainage assembly, after condensate in a steam compressor flows into a liquid storage tank through a liquid conveying pipe, a first valve body and a liquid inlet pipe, condensate water can be gathered on the periphery of the lower end of a negative-pressure pipe through a water collecting tank, so that the efficiency of subsequent extraction is improved, and in the process, the condensate water in the negative-pressure pipe can be recycled. And the condensate water is guided through the inclined first guide plate and the inclined second guide plate, so that the gathering effect is further improved.

This utility model relates to the field of wastewater treatment technology, specifically an online detachable gas lift and reflux device. It includes: a gas lift tank body, in which the reflux liquid undergoes gas-liquid separation; an exhaust valve located at the upper end of the gas lift tank body; a liquid inlet and a liquid outlet located on opposite sides of the gas lift tank body, with the liquid inlet higher than the liquid outlet; a suction pipe, one end connected to the liquid inlet and the other end inserted into the reflux liquid; and an air inlet pipe, the lower end connected to the end of the suction pipe inserted into the reflux liquid, and the upper end connected to an air supply system. The air inlet pipe is connected to the air supply system via a quick-connect fitting. The liquid inlet is connected to the suction pipe via a quick-connect fitting, and the liquid outlet is connected to the reflux point via a quick-connect fitting. A horn-shaped flow guide is provided at the lower end of the suction pipe. The end of the air inlet pipe connected to the suction pipe is vertically positioned upwards inside the suction pipe and coaxially arranged with it. Its structure is simple and compact, reducing component damage caused by mechanical wear and extending its service life.

A looping water device has a container, a barrel body, an inlet pipe, and a switch valve. The container has a major tank and a vacuum tube. A water surface in the major tank approaches a datum plane. The vacuum tube is full of water. The barrel body contains air, is secured inside the major tank, and has a discharge port. The inlet pipe is connected to the barrel body and extends into the vacuum tube. The switch valve is connected between the inlet pipe and the barrel body. The air in the barrel body is compressed by water entering into the barrel body from the inlet pipe. When air pressure exceeds, the water in the barrel body is pushed into the major tank. A differential height between the water surfaces of the vacuum tube and the major tank is kept by the atmospheric pressure.

This invention relates to a vacuum preloading and drainage method for ultra-soft soil. The method includes filling a sludge tank with sludge and installing vertical drainage boards within the sludge. The vertical drainage boards are connected to a vacuum pump via drainage pipes, which are also open to the atmosphere. After vacuum preloading for a certain period, the vacuum pump is turned off, and the drainage pipes are opened to the atmosphere, allowing air to enter and creating a pressure difference between the surface of the vertical drainage boards and the sludge, preventing clogging. After vacuum drainage, the sludge near the surface of the drainage boards gradually becomes denser, while the pressure inside the sludge tank is lower than atmospheric pressure. This invention, by opening the drainage boards to the atmosphere after vacuum drainage for a certain period, creates a pressure difference on the surface of the drainage boards, pushing the denser sludge layer on the surface of the drainage boards to disperse or move away, allowing other, more fluid sludge to replace the original denser sludge layer, thereby slowing down or prolonging the clogging process of the drainage boards.

The invention discloses a fault emergency operation method for a steam seal air extractor, solves the problem that the steam seal air extractor loses performance due to faults or must be shut down due to pipeline faults of an auxiliary steam system, and belongs to the technical field of steam power. The method comprises the steps that when a steam seal air extractor breaks down, a main air extractor starts an emergency operation mode, a channel between a steam seal system and the steam seal air extractor is closed, and leaked air from the steam seal system is sucked through the micro negative pressure characteristic in an ejector diffusion pipe in a second-stage air extractor of the main air extractor; in a conventional operation mode, only one working unit of a tube bundle of the second-stage cooler is started, and other units are short-circuited through bypass branches; and in the emergency operation mode, all the bypass branches are closed, so that all the working units are connected into the cooling flow path in series to jointly bear the cooling load. And meanwhile, the position of the diffusion pipe is selected, a certain siphonic effect is guaranteed, and the mixed gas enters the diffusion pipe, continues to be subjected to the pressurization process and is directly discharged at an outlet.

A looping water device has a container, a barrel body, an inlet pipe, and a switch valve. The container has a major tank and a vacuum tube. A water surface in the major tank approaches a datum plane. The vacuum tube is full of water. The barrel body contains air, is secured inside the major tank, and has a discharge port. The inlet pipe is connected to the barrel body and extends into the vacuum tube. The switch valve is connected between the inlet pipe and the barrel body. The air in the barrel body is compressed by water entering into the barrel body from the inlet pipe. When air pressure exceeds, the water in the barrel body is pushed into the major tank. A differential height between the water surfaces of the vacuum tube and the major tank is kept by the atmospheric pressure.

The utility model discloses a self-suction vacuum tank capable of improving vacuum degree, which comprises a tank body, and a communicated suction inlet flange is arranged on the side surface of the lower part of the tank body; a screen plate is vertically arranged in the tank body; a disc is rotationally arranged on the upper surface of the bottom of the tank; shaft rods are fixedly connected to the middles of the discs; fixedly-connected scraping rods are symmetrically arranged on the two sides of the upper surface of the disc, the scraping rods are attached to the interior of the tank body, and the disc rotates in the tank body in a reciprocating mode; the shaft rod is fixedly connected with a first gear corresponding to the bottom of the tank body; a motor is fixedly arranged at the bottom of the tank body, the output end of the motor is fixedly connected with a second gear, and the second gear is meshed with the first gear; the scraping rod is used for scraping dirt in the tank body, and after a worker cleans dirt deposition substances in the inner wall of the tank body, the gas flowing resistance can be reduced, so that the pumping efficiency of the pump is improved, the pressure in the tank is reduced to the required low level, and the purpose of improving the vacuum degree in the tank body is achieved.

The invention relates to the field of negative pressure cleaning rooms, in particular to a modular cleaning device for a textile workshop, which comprises a top cover, four ground rails and four side walls, the four side walls are respectively inserted into the four ground rails in a sliding manner to form four side walls of the cleaning room, each side wall comprises at least two wall plates, and the wall plates are arranged on the top cover. According to the modular cleaning device for the textile workshop, the wallboards and the hinge sets are installed in advance, during installation, only the wallboards need to be straightened, then the wallboards are inserted into the ground rail, the installation process is rapid, the wallboards do not need to be spliced one by one by workers, the assembly is convenient, and the assembly efficiency is improved. According to the negative pressure cleaning room, the L-shaped clamping plates are arranged on the wall plates, the wall plates can be folded and convenient to move, after the wall plates are installed, the L-shaped clamping plates are also automatically installed, the L-shaped clamping plates are equal to the guide rails of the top cover, in this way, workers do not need to install the guide rails, the installation time of the top cover is shortened, and the negative pressure cleaning room can be installed outdoors.

The invention provides a salt lake self-flow air pressure water diversion system and method. The water diversion system comprises a self-flowing pipe, a water collecting well, an air pump, a water storage well and a control system, the top face of the water collecting well is lower than the water surface of the salt lake, one end of the self-flowing pipe is immersed in the salt lake, the other end of the self-flowing pipe turns over the embankment of the salt lake and extends into the water collecting well, and the water inlet end, located in the salt lake, of the self-flowing pipe is higher than the water outlet end located in the water collecting well. An electric cut-off valve is arranged on an inlet of the self-flowing pipe; the air pump is used for injecting high-pressure gas into the water-collecting well or extracting gas from the water-collecting well; the bottom surface of the water storage well is higher than the water surface of the salt drying pond, the water collecting well is communicated with the top of the water storage well through a water guide pipe, a water conveying pipe leading to the salt drying pond is arranged at the bottom of the water storage well, and an outlet electric water stop valve is arranged on the water guide pipe. Brine is extracted according to the low-liquid-level water self-flowing principle and the high-pressure air water pressing principle, a water pump is not used for pumping, pump blades are prevented from making contact with brine crystals, then pump faults are reduced, the water pumping cost is reduced, and the water pumping efficiency is improved.

A vacuum generator may comprise: a generator body provided with an air inlet, a contraction pipe section, an expansion pipe section, a negative pressure generation cavity, and an air outlet that may be sequentially communicated, where in a ventilation direction from the air inlet to the air outlet, a pipe diameter of the contraction pipe section may be gradually decreased, a pipe diameter of the expansion pipe section may be gradually increased, and the negative pressure generation cavity may be constructed to generate an inner cavity jet flow negative pressure when gas ejected from the expansion pipe section flows through the negative pressure generation cavity; wherein the generator body may be further provided with a negative pressure suction flow channel, and the negative pressure suction flow channel may comprise a suction port section and a reduced-diameter flow channel section.

The utility model provides an emptying drainage device for a circulating water pump, which comprises a main recovery pipeline and an auxiliary recovery pipeline, the auxiliary recovery pipeline is communicated with a water inlet pipe section of the circulating pump, and the main recovery pipeline is communicated with a water outlet pipe section of the circulating pump; the main recycling pipeline comprises a main recycling pipe section connected into the water outlet pipe section and a main collecting tank arranged at the tail end of the main recycling pipe section, the auxiliary recycling pipeline comprises an auxiliary recycling pipe section connected into the water inlet pipe section, an auxiliary collecting tank and a vacuum pump, the auxiliary collecting tank and the vacuum pump are arranged on the auxiliary recycling pipe section, and the tail end, away from the water inlet pipe section, of the auxiliary recycling pipe section is communicated with the main collecting tank. Circulating liquid is alternately recycled between the main recycling pipeline and the auxiliary recycling pipeline provided by the utility model, the main recycling pipeline and the auxiliary recycling pipeline are used for discharging and draining liquid respectively by virtue of the circulating pump and the vacuum pump, and the liquid discharging efficiency is improved by utilizing a double-line matching mode.

The utility model provides vacuum water diversion equipment with a vacuum keeping function, which belongs to the technical field of vacuum water diversion and comprises a vacuum water diversion controller, an electromagnetic valve, a vacuum distribution pipe, a vacuum tank, an air suction pipe, a pressure switch, a manual valve, a vacuum check valve, a vacuum pump, an exhaust pipe, a working liquid pipe, a gas-water separator, a cavitation protection pipe, a control cabinet and a flanged base. The vacuum tank and the pressure switch achieve vacuum keeping, the vacuum water diversion controller connected through the water diversion branch pipe and the electromagnetic valve control serve as a vacuum branch to complete the water diversion process, and a plurality of branches can be connected in parallel. The vacuum pumping, water diversion, shutdown and other operations can be automatically completed according to preset parameters, the cavitation risk of the water pump can be reduced and the service life of the water pump can be prolonged by ensuring that the water inlet pipeline is always filled with water, and the remote control function is achieved by arranging the PLC and the Internet of Things gateway in the control cabinet.