33results about How to "Large liquid flow" patented technology

Disclosed is a method for treating sewage by hydrodynamic cavitation and ozone coupling, which is characterized in that: the sewage treatment technique is composed of a centrifugal pump, an ozone generator and a cavitation generator and is realized by utilizing the cavitation effect produced by hydrodynamic cavitation and strong oxidation and coupling functions of ozone, the ozone produced by the ozone generator is doped into the sewage to enter the cavitation generator together and produce the cavitation effect in the cavitation generator, the contact area of ozone and sewage is increased through the micro-jet produced in a cavitation region, so as to extend the action time of ozone in sewage and change the amount of gas nucleus and distribution of gas nucleus in sewage, degrade oxygen consuming matters in the sewage, improve the coupling effect of cavitation and ozone, and achieve the purpose of reducing sewage COD, and the treated sewage can surely reach the required COD indexes by adjusting the treatment grade as required. Compared with the prior art, the technique has the advantages of simple process flow, convenient operation, high energy utilization ratio, strong adaptability, high efficiency, large treatment capacity, non secondary pollution and low cost.

A baby bottle assembly including a nipple having a substantially flat membrane defining multiple pinholes for controlling the flow of liquid. The nipple is mounted on a cap that screws onto the bottle body. The nipple is formed from a suitable elastomeric material (e.g., soft rubber, thermoplastic elastomer, or silicone) such that the membrane stretches when subjected to a differential pressure. The pinholes are formed by puncturing the membrane while subjecting the membrane to radial tension, and using one or more pins having a substantially circular cross-section and sized such that each pinhole is closed by the surrounding elastomeric material when the pins are removed.

The present invention discloses a negative pressure drainage dressing having attraction and flushing functions. The negative pressure drainage dressing comprises a sponge body and at least one drainage conduit; one end of the drainage conduit is inserted into the sponge body; the other end of the drainage conduit is connected with a negative pressure source; and a conduit wall of the drainage conduit inserted into the sponge body is provided with a plurality of negative pressure attraction through holes. The negative pressure drainage dressing also comprises a perfusion pipeline, the perfusion pipeline is inserted into the sponge body and capable of injecting flushing liquid or soup into the sponge body to intervene in a wound, and negative pressure attraction of the wound secretion, the flushing liquid and the soup in the sponge body can be carried out by the drainage conduit. The negative pressure drainage dressing has the advantages that the liquid can be injected to the wound, the wound can be wetted and cleaned, the efficiency of attracting the secretion and edema liquid is higher, the wound can be intervened, and inhalation channels are not easy to be blocked.

The invention relates to an impeller-type spray head of a novel electrostatic sprayer, comprising a motor and an impeller rotatably connected with a rotating shaft of the motor. The impeller comprises a profile and a base which are coaxially arranged, and a plurality of fan blades evenly distributed between the profile and the base along a circumference direction; a motor base of the impeller-type spray head is provided with a liquid inlet and a liquid outlet; when the motor of the impeller-type spray head drives the impeller to rotate, liquid medicine is sprayed out of the liquid outlet through the liquid inlet by means of the spray gun from the liquid medicine tank; the highly-rotated fan blades break the liquid medicine into tiny fogdrops with charge, most of fogdrops are blown forward from clearances among the fan blades, and small part of fogdrops are thrown out along a diversion trench on the inner surface of the profile on the edge of the impeller. Compared with the rotary spray head in the prior art, the impeller-type spray head has larger amount of sprayed medicine liquid flow and favorable atomization effect, and can more deeply spray the fogdrops inside the target as force blowing forward is generated to the fogdrops.

The invention discloses a method for treating wastewater by cooperation of choking cavitation and H2O2. The method is characterized by being realized by adopting a process of treating the wastewater by cooperation of the cavitation effect generated by a choking cavitation unit consisting of a hydrogen peroxide storage box, a centrifugal pump and a choking cavitation device and strong oxidizing property of H2O2. The method comprises the following steps: feeding a solution of H2O2 into the centrifugal pump and the choking cavitation device while pumping the solution into the wastewater, generating the cavitation effect in the choking cavitation device, and forming strong shearing disturbance through micro jet flow and shock waves generated in a cavitation region, so that the area of contact between H2O2 and the wastewater is enlarged, the action time of H2O2 in the wastewater is prolonged, the probability of collision between H2O2 and organic molecules in the wastewater is increased, the degradation of the organic molecules in the wastewater is accelerated, the cooperative treatment effect of the choking cavitation and H2O2 is improved, and the purpose of degrading difficultly degraded components in the wastewater is achieved. Compared with the prior art, the technology has the advantages of simple process, convenience in operation, high energy utilization rate, strong adaptability, high efficiency, large treatment capacity, no secondary pollution, low cost and the like.

An oil charging and discharging valve seat is applied to a bottom unloading oil discharging device or a top loading bottom unloading oil discharging device, and is connected to an oil charging and discharging valve of a tank body. The oil charging and discharging valve seat comprises an oil charging and discharging valve seat bottom portion (1) and an oil charging and discharging valve seat root portion (2) that extends from the edge of the oil charging and discharging valve seat bottom portion to an upper portion. The thickness of the oil charging and discharging valve seat bottom portion is smaller than the thickness of the oil charging and discharging valve seat root portion. The oil charging and discharging valve seat is high in working efficiency and good in tightness, and is easy to form.

The invention relates to a continuous membrane treatment method for alkali pressed liquid in a viscose fiber production process. The method comprises the steps of material preparation, feeding and system operation. The system operation process further comprises a cleaning step: one stage of nanofiltration membrane assembly is switched out of a nanofiltration membrane system to be cleaned, and other nanofiltration membrane assemblies operate normally; alkali pressed liquid or concentrated liquid generated by the previous-stage nanofiltration membrane assembly skips the nanofiltration membrane assembly being cleaned and is introduced into the next-stage nanofiltration membrane assembly or a concentrated liquid tank; and after cleaning is finished, the nanofiltration membrane assembly is connected back to the nanofiltration membrane system in series again; and each stage of nanofiltration membrane assembly can be separately cleaned in the same manner. The treatment method is a continuousmembrane treatment process with full-automatic operation and cleaning, and a batch intermittent operation mode adopted in a conventional technology is changed, so that the utilization rate of nanofiltration membranes can be effectively improved, the cleaning times of the nanofiltration membranes can be reduced, and the service life of the nanofiltration membranes can be prolonged.

The invention relates to a filter, which comprises a cylindrical filter body, a filter element and a filter screen, wherein a liquid outlet is formed at one end of the filter body; an interface connected with a hydraulic system pipeline is formed on the outer side of the liquid outlet; the other end of the filter body is fixedly connected with the filter element; a filtering cavity is formed between the filter body and the filter element; a liquid inlet is formed on the filter element; the filter screen is of a cylindrical structure; and one end of the filter screen is fixedly connected with the filter element. The filter is characterized in that: the other end of the filter screen is arranged in the filtering cavity; the outer diameter of the filter screen is matched with the inner diameter of the filtering cavity; and a plurality of filtering sheets are arranged on the cylindrical filter screen. The filter has the advantages of high filtering precision, high liquid flow rate, long service life and low manufacturing cost.

The invention discloses a magnetic exchange valve which comprises an armature (1), a coil (2), a push rod (4), a valve core (5) and a valve body (7), wherein the push rod (4) and the valve core (5) are mounted inside the valve body (7), the push rod (4) is connected with the valve core (5), the armature (1) is mounted at the top of the push rod (4), and the coil (2) is mounted at the lower end of the armature (1). According to the magnetic exchange valve provided by the invention, the cross section area of a runner is increased, the liquid flow is increased, and parameters of an electromagnet are changed, so as to reduce power dissipation and increase direction-changing frequency.

The invention discloses a ship ballasting wastewater purification method. The method comprises the following steps: S1, an electric field is formed in a space between a high-voltage electrode and a grounding electrode; S2, high-pressure gas in the high-pressure gas cylinder enters the electric field space through a gas flow control valve, and plasma jet flow is formed and sprayed out; S3, a to-be-treated liquid in a liquid storage tank passes through a liquid flow control valve, a filter and a flow meter and then is sprayed out in a spraying mode under the action of a liquid processor, and allspraying fields pass through an unbalanced plasma jet flow area; S4, under the effect of the non-equilibrium plasma jet flow, target purification substances contained in the liquid drop particles inthe atomization field are killed; S5, a detection port control valve is turned on, and the purified liquid is pumped out by a detection port reflux pump, and fed into a detector; and S6, the purifiedliquid is analyzed by the detector. A detection mechanism is additionally arranged to further improve the purification effect.

The invention discloses a connecting port of an infusion bag, comprising a body, wherein the body is provided with a longitudinal through hole; a connecting part is arranged at one end of the body; an outlet part is arranged at the other end of the body; the connecting part is provided with two wings, and convex ribs are arranged on the two wings; one section of transitional part for connecting the outlet part with the connecting part is arranged in the middle of the body; the thickness wall of the transitional part is transitioned from thickness to thinness between the outlet part and the connecting part; a through hole is in a rhomboid shape in the connecting part; from top to bottom, the width of the through hole is transitioned from width to narrowness; and the two wings are thin wings. By adopting the rhomboid design and producing the two wings into the thin wings, the thickness of the side wall of the connecting part at the connecting port of the infusion bag is kept uniform; during heat sealing, the non-uniformity during heating is avoided, favorable heat sealing performance is obtained and materials are saved; meanwhile, by adopting the design of the transitional part, the materials are further saved.

The invention provides a two-position five-way negative pressure switching valve. The valve comprises a valve body and a valve element, wherein an inner cavity matched with the valve element in shapeis formed in the valve body, the valve element is limited in the inner cavity of the valve body, the outer surface of the valve element is tightly attached to the inner wall of the inner cavity of thevalve body, the valve body is provided with an inlet channel, a first outlet channel, a second outlet channel, a first ventilation hole channel and a second ventilation hole channel, and the first ventilation hole channel and the second ventilation hole channel are communicated with outside atmosphere respectively; when the valve element is located at a first working position, the inlet channel is communicated with the first outlet channel, the inlet channel is isolated from the second outlet channel, and the second outlet channel is communicated with the second ventilation hole channel; andwhen the valve element is located at a second working position, the inlet channel is communicated with the second outlet channel, the inlet channel is isolated from the first outlet channel, and the first outlet channel is communicated with the first ventilation hole channel. The valve is connected between a separator of a vacuum system and two water storage tanks, any working position can enableone water storage tank to be communicated with the separator and store water, and the other water storage tank is isolated from the vacuum system and drains water.

The invention relates to a method for increasing the yield of aviation kerosene fraction by modifying a catalytic cracking main fractionating tower. The method comprises the following steps that: S1,a plurality of tower plates above a light diesel oil extraction hopper and below a top cycle extraction hopper are removed, and a filler A and an oil collecting tank A are arranged from top to bottom,wherein an aviation kerosene fraction can be extracted from the oil collecting tank A and sent to an aviation kerosene refining device; S2, a plurality of tower plates below a rich absorption oil inlet are removed, and a liquid distributor B, a filler B and an oil collecting tank B are arranged from top to bottom, wherein a light diesel fraction can be extracted from the oil collecting tank B; and S3, an aviation kerosene fraction stripping tower utilizes an original heavy diesel oil stripping tower, the aviation kerosene fraction enters the aviation kerosene fraction stripping tower to be stripped, the aviation kerosene fraction is cooled and sent to the aviation kerosene refining device, and the 95% distillation point of the aviation kerosene fraction is controlled according to the extraction amount of the aviation kerosene fraction. The aviation kerosene extraction line of the qualified aviation kerosene distillation range is added to the catalytic device fractionating system by modifying part of tower trays of the catalytic cracking device fractionating tower and other measures, existing conditions of an old original device are fully utilized, the modification work amount is reduced, investment is saved, and important guiding significance is achieved for aviation kerosene production increase of refinery enterprises.

The invention provides a medium-high lift full-cross-flow submersible mixed-flow electric pump, and relates to the field of water pumps. The medium-high-lift full-cross-flow submersible mixed-flow electric pump comprises an outer pipe, a driving motor is arranged in the outer pipe, the lower end of the driving motor is fixedly connected with a planetary reducer, the output end of the driving motor is connected with the input end of the planetary reducer, blades are arranged below the planetary reducer, and the output end of the driving motor is connected with the input end of the planetary reducer. The paddle is fixed to the output end of the planetary reducer, a variable-diameter section is arranged on the lower portion of the outer pipe, the paddle is located above the variable-diameter section, the side wall of the outer pipe is sleeved with a sleeve, the sleeve is located at the variable-diameter section, a plurality of openings are formed in the side wall of the sleeve at equal angles, and anchoring mechanisms are arranged on the inner sides of the openings. The electric pump is provided with the anchoring mechanism, the electric pump is supported, and a component dissolved in water is adopted, so that triggering of the anchoring mechanism is simplified.