707results about How to "Flow adjustable" patented technology

Electrosurgical jaw structures are disclosed that include pressure sensitive variable resistive materials in electrosurgical energy delivery surfaces for welding tissue. The pressure sensitive materials are configured to have megaohm impedance when not engaging tissue and can transform into highly conductive electrodes when compressed under a selected pressure. In a method of the invention, the pressure sensitive variable resistive materials prevent arcing and tissue desiccation when applying bi-polar Rf current to tissue engaged under high compression in an electrosurgical jaw structure.

A valve that is adapted to control the flow rate of fluid flow from an implantable pump or other fluid delivery device is provided. In general, the valve includes a multi-lumen member that is adapted to receive fluid-flow therethrough, and a restrictor member that is coupled to the multi-lumen member such that the restrictor member is effective to selectively restrict at least a portion of one or more lumens in the multi-lumen member to thereby adjust the flow rate of fluid flowing through the multi-lumen member. The valve can be built into an implantable drug pump to control fluid flow exiting the pump, or alternatively the valve can disposed within a catheter or otherwise coupled to an outlet port in an implantable drug pump to control the flow rate of fluid exiting the drug pump.

The invention is a sliding way sleeve abrasion testing machine, which comprises a transmission system, an excitation system, a clamping system and a rack. A first test piece is fixed and clamped on a rotating transmission shaft of the transmission system; a second test piece is arranged corresponding to the first test piece on the clamping system and the transmission system drives the first test piece to rotate around the axis. The rack is provided with at least one sliding platform and the transmission system is arranged on the sliding platform. The excitation system can drive the sliding platform to vibrate up and down to drive the first test piece to impulse the second test piece while rotating. The testing machine overcomes the disadvantage of the prior abrasion testing machine which is incapable of satisfying the requirement on studying the impulse and sliding composite abrasion test between petroleum the drilling rod and the sleeve under the conditions of circulating medium and can perform systematic investigation on the impulse and sliding composite abrasion of various materials of large dimension between the petroleum the drilling rod and the sleeve.

A valve that is adapted to control the flow rate of fluid flow from an implantable pump or other fluid delivery device is provided. In general, the valve includes a multi-lumen member that is adapted to receive fluid-flow therethrough, and a restrictor member that is coupled to the multi-lumen member such that the restrictor member is effective to selectively restrict at least a portion of one or more lumens in the multi-lumen member to thereby adjust the flow rate of fluid flowing through the multi-lumen member. The valve can be built into an implantable drug pump to control fluid flow exiting the pump, or alternatively the valve can disposed within a catheter or otherwise coupled to an outlet port in an implantable drug pump to control the flow rate of fluid exiting the drug pump.

A gas cylinder dispensing valve having an internal flow path provided with a pressure regulator. A biased isolation valve is provided within the flow path between the pressure regulator and a gas inlet of the valve and a flow control valve is provided within the flow path between the pressure regulator and a gas outlet to discharge the gas. Both isolation valve and the flow control valve can be manipulated by a single control knob which when set in an off position closes the isolation valve. The control knob can be rotated from the off position to select discrete, calibrated flow rates or an auxiliary position in which gas may be dispensed at a regulated pressure from an auxiliary outlet port.

A seed treatment apparatus provides for minimal waste of products for treating seeds, in that it is precisely controllable and automatically adjustable. A volume of seeds to be treated and a flow rate of treatment product for treating the seeds can both be sensed. At least one of the flow rate of the treatment product and the volume of seeds can automatically be adjusted if it is determined that a ratio of the flow rate of treatment product to the volume of seeds is not the same as a predetermined flow rate to volume ratio.

A gas cylinder dispensing valve having an internal flow path provided with a pressure regulator. An isolation valve is provided within the flow path between the pressure regulator and a gas inlet of the valve and a flow control valve is provided within the flow path between the pressure regulator and a gas outlet to discharge the gas. Both isolation valve and the flow control valve can be manipulated by a single control knob which when set in an off position closes the isolation valve. The control knob can be rotated from the off position to select discrete, calibrated flow rates or an auxiliary position in which gas may be dispensed at a regulated pressure from an auxiliary outlet port.

The invention discloses a flocculation washing machine. The flocculation washing machine comprises an outer barrel, a flocculation unit and a filtering unit which are circularly communicated in a sequence through pipelines. The washing machine further comprises an air pump which is respectively communicated with the flocculation unit and the filtering unit. According to the flocculation washing machine, air generated by the air pump is conveyed into a flocculation container through the same air pump so as to generate a mass of bubbles in the water into the flocculation container, thus the water fully flow to enable fully mixing of a flocculant and washed water to achieve flocculation reaction; in addition, the air exhausted by the air pump can be conveyed into a filtering container during washing a filtering unit to generate bubbles to drive water in the filtering container to fully flow as well as generating an instantaneous impact force to act on the surface of a filtering screen, so as to separate dirt attached on the surface of the filtering screen, and as a result, the filtering effect of the filtering screen can be improved. The flocculation washing machine is high in automation degree and simple in structure and saves the production cost.

The invention discloses a rare cell detection chip and an application thereof. The chip comprises a matrix and a substrate, wherein the matrix is divided into an upper layer and a lower layer; a rare cell screening membrane is integrated between the upper layer and the lower layer; a sample inlet, a sample outlet and a sample channel are formed in each of the upper layer and the lower layer, which are suitable for the control of micro fluid such as blood samples, buffer solutions, cell culture solutions, other biochemical reagents and the like. When a sample is input from the sample inlet in the upper layer, and is output from the sample outlet in the lower layer, rare cells in the sample can be selectively blocked at the upper end of the cell screening membrane. According to the need, the buffer solutions, the cell culture solutions or other biochemical reagents are input from the sample inlet in the upper layer or the sample inlet in the lower layer, and are output from the sample outlet in the upper layer or the sample outlet in the lower layer so as to realize various cell operations and analysis and corresponding molecular biology detection. By adopting the rare cell detection chip disclosed by the invention, the problem of poor selectivity and sensitivity in capture of rare cells is solved; and the rare cell detection chip is suitable for efficient capture, culture and analysis of circulating tumor cells in the peripheral blood of the human body and fetal circulating cells.

The invention discloses a drag-reducing valveless piezoelectric pump with drag-reducing fluids. The drag-reducing valveless piezoelectric pump comprises a side wall of a pump body, an upper pump cover and a pump base which define a pump cavity, wherein a piezoelectric vibrator is arranged in the pump cavity; a first direct flow pipe and a second direct flow pipe are arranged on the side wall of the pump body and are communicated with the pump cavity and the outside; and the at least one drag-reducing fluid is arranged on the pump base. In general, the piezoelectric vibrator is parallel to the pump base and divides the pump cavity into two independent units, and the number of the drag-reducing fluids is determined according to the size of the pump base. The drag-reducing valveless piezoelectric pump with the drag-reducing fluids has a large output quantity and an adjustable flow rate, can be used for realizing tiny flow output and large flow output, and has a function of pumping the mixed fluids besides a function of pumping a single fluid of the conventional valveless piezoelectric pump, so that the application range of the valveless piezoelectric pump is broadened.

The invention discloses a kind of catalysis crack method and its device in petroleum chemical industry, to solve the problems as the whole activeness reduction of mixed catalysts and the flexibility lack of adjusting the agent-oil proportion of heavy oil riser reactor caused by the mixing wise of the spend catalyst and regenerating catalyst of the present two-riser catalysis crack device. The main characteristics of the invention method are: part of the spent catalyst from the light hydrocarbon riser reactor (4) gets into catalyst mixer through the spent catalyst duct (3) set flow control valve (1) after water vapour stripped in the stripping section (7) of the second settler, and gets into heavy oil riser reactor (12) to react after mixed by the effect of water vapour with the regenerating catalyst form regenerator (14) in catalyst mixer. The method of the invention is suitable to be used in the two-riser catalysis crack craft and the three-riser catalyst crack craft set heavy oil riser reactor; the invention has disclosed related devices.

Systems, methods, devices and techniques can be used in networks including resilient packet ring networks and other types of ring topology networks to adjust the flow of data traffic to MAC clients associated with stations on the network. In one example, adjusted fairness rates and / or messages associated with a network communication protocol are used to reduce traffic destined for a particular station and / or a MAC client associated with that station. In another example, station MAC clients or other components implement virtual destination queues and transmit information associated with the rate at which they receive data. The information and queues are used to reduce traffic destined for a particular station and / or a MAC client associated with that station.

The invention relates to a device and a method for testing pressure of an intelligent substation, and belongs to the technical field of intelligent substations. The device comprises an upper computer, a CPU (central processing unit), an FPGA (field programmable gate array) and an Ethernet physical layer circuit connected in sequence. A testing environment meeting requirements of an IEC (international electro-technical commission) 6185O specification system is provided, normal sampling values (SV) and GOOSE data can be output, normal system running or grid fault can be simulated, background interference flow data in an SV format and background interference flow data in a GOOSE format can also be output, and further, messages such as IP(internet protocol), ARP(address resolution protocol), ICMP(internet control message protocol) and SNMP(simple network management protocol) can be output to form a general background flow. By filtering and analyzing the SV message or the GOOSE message or the MMS message with the specific APPID, potential safety hazards existing in different load-pressure backgrounds of the specific IED device in the network or network switching devices of the whole process level are found, and safety running level of the intelligent substation is increased.

The invention discloses an electric switching valve. The electric switching valve comprises a valve seat and a sliding block which is attached to the upper end of the valve seat in a sealing mode. The sliding block can rotate relative to the valve seat so as to open and close a guiding-out opening of the valve seat. The number of the guiding-out opening is one. A through hole is formed in the sliding block. The flow area of the through hole is smaller than that of the guiding-out opening. In the rotating process of the sliding block, the through hole can be communicated with the guiding-out opening. According to the electric switching valve, the refrigerant flow can be controlled, the energy loss is reduced, and energy consumption of a refrigerating system is reduced.

The invention discloses a bathroom electric cleaning device which comprises a long rod, a handle, a storage battery, a motor, a rotating shaft, a hairbrush, a cleaning agent storing box, a water pipe, a corrugated pipe, a connector, a switch button, a protection cover, a second motor, a second rotating shaft, a second hairbrush, a dryer, a pipeline, a drying head, a fixing plate, a sliding plate, a spring, a first filtering hole and a second filtering hole. The bathroom electric cleaning device is simple in structure and powerful in function; the motors when being turned on drive the hairbrushes to clean a floor, so that cleaning by workers is replaced, and labor is reduced; the floor is flushed by a cleaning agent and water while the hairbrushes are in friction with the floor, so that consumption of the cleaning agent and the water is reduced, and cost is saved.

The invention discloses on-line quenching and plate shape controlling technology for a 12 MnNiVR steel plate, comprising: a blank material cold installation step, a de-scaling step, a rough rolling step, a finish rolling step, a pre-straightening step and an on-line quenching step; wherein in the on-line quenching step, the steel plate enters a ultrafast cooling system with 18 groups of cooling headers, the ultrafast cooling system sets a water flow amount based on the steel plate target thickness, sets an area roller-way speed being 0.7-1.2m / s, sets a roller-way acceleration being 0.003-0.01m / s2, controls a cooling start temperature being 790-740 DEG C, and controlling a cooling final temperature being 180-270 DEG C, and the steel plate departs from the ultrafast cooling system when a cooling final temperature is 180-270 DEG C. The technology provided by the invention raises cooling uniformity, cooling efficiency and once plate shape qualified rate of an on-line quenched steel plate, simplifies a thermal refining technology flow of 12MnNiVR, and finally raises economic benefit of enterprises.

A pilot-type two-port valve is disclosed having a water hammer preventing mechanism, operative to prevent a water hammer during valve-closing operation, which includes a valve member operative to open or close a valve and a piston driven by pilot fluid for operating the valve member for opening and closing movements. The water hammer preventing mechanism comprises a piston drive chamber, from which fluid is discharged during valve-closing operation, which has an orifice for restricting the flow rate of discharge fluid whereby when the piston moves to a position to allow the valve member to be close to a valve seat, a portion of an discharge flow passage of the piston drive chamber is blocked to restrict the flow rate of the discharge fluid to the flow rate of fluid flowing through the orifice.

A surgical apparatus 10, used in a phaco procedure, includes a filter assembly 44 / 44a for near, or complete, elimination of air bubbles in an aspiration line of an aspiration system 38. The apparatus 10 includes a suppressor 110, which, during an aspiration mode of operation, maintains a fluid flow rate at 50 cc / min, and, upon an occlusion breaking free, dynamically decreases the fluid flow rate from a high surge rate to the rate at 50 cc / min. The apparatus 10 includes facility for operating in a reflux mode to direct unrestricted fluid flow through the aspiration line of the aspiration system 38.

A hydraulic oil pump realizes automatic switch by depending the oil well liquid provided by ground pump station as power liquid. The pump includes an upper joint, a pump housing, a switch valve, a control mechanism, a drive cylinder, an upper discharge suck valve assembly, a hollow piston rod, a liquid discharging cylinder, a lower discharge suck valve assembly and a lower joint. Two different opening loops can be adopted according to different well conditions; each loop has four implementing schemes. The effect is that: the pump thoroughly changes the control mode that the switch valve and drive cylinder moves synchronously in conventional water power piston pump, the switch valve is at non-friction state in most time, and the sealing surface will not bearing erosion during switch process. Therefore, the pump has strong reliability and low requirement for power liquid quality, and has a power consumption which is only 25-30% of existing oil pump; thereby it is perfect equipment for oil extraction from inclined well, deep well and dense oil well.

A method for controlling an engine having at least one cylinder is provided. The engine includes an intake manifold and an outlet control device for controlling flow from the intake manifold into the cylinder. The method includes generating an operator command. The method further includes controlling flow into the cylinder by changing the outlet control device to control flow into the cylinder based on the operator command.

A pilot-type two-port valve is disclosed having a water hammer preventing mechanism, operative to prevent a water hammer during valve-closing operation, which includes a valve member operative to open or close a valve and a piston driven by pilot fluid for operating the valve member for opening and closing movements. The water hammer preventing mechanism comprises a piston drive chamber, from which fluid is discharged during valve-closing operation, which has an orifice for restricting the flow rate of discharge fluid whereby when the piston moves to a position to allow the valve member to be close to a valve seat, a portion of an discharge flow passage of the piston drive chamber is blocked to restrict the flow rate of the discharge fluid to the flow rate of fluid flowing through the orifice.

The invention discloses a methanol-based fuel high-pressure supplying device. The device comprises a methanol tank, a water tank and a dimethyl ether tank which respectively contain methanol, water and dimethyl ether; both the methanol tank and the water tank are connected with pre-pressurizing systems; the dimethyl ether tank is connected with a mixed measuring system; the pre-pressurizing systems and the mixed measuring system are connected, wherein the mixed measuring system is sequentially connected with a pressurizing system and an engine; in addition, the pressurizing system and the pre-pressurizing systems are all connected with air compressing devices. The methanol-based fuel high-pressure supplying device has the beneficial effects that methanol, dimethyl ether and water are mixed based on different ratios; in addition, the online control is realized; the demand on material supply at different pressures can be realized under a high pressure of 100 MPa; meanwhile, the flow rate can be adjusted within a certain range, and the utilization rate of the methanol-based fuel can be raised; the supplying system has a wide range of output pressure and can directly enter an internal combustion engine and other energy consumption devices without pressure reduction, and thus the energy consumption can be reduced; the self-cooling is realized, the operation can be individually performed, the pollution resource is avoided, and the long-time, safe, stable and reliable operation is reached.

Disclosed herein is a debris-flow simulation apparatus having a variable flume. The flume includes a plurality of flume bodies which are connected to each other in the longitudinal direction. The heights of the flume bodies can be easily adjusted, thus varying the angles of inclination of the flume bodies.

A fiber flow controlled centrifugal bowl mechanism comprises a centrifugal bowl and a mesh filter bracket sleeved at the bottom of the centrifugal bowl. A grating disk is installed between the bottom of the centrifugal bowl and the mesh filter. The upper surface of the grating disk is provided with cutting teeth, the lower part of the centrifugal bowl is provided with mesh holes allowing fibers to pass and the mesh size is adjustable. The utility model has the following advantages: 1, the centrifugal bowl and mesh filter of the juicer can rotate relatively to adjust the size of the mesh holes; 2, the fiber flow can be controlled through the mesh holes, so beverages containing different fibers can be provided; and 3, the mesh size can be quickly fixed by installing a locating structure, so the juicer is quick to adjust and convenient to use.

A balancing faucet in a faucet includes a valve shell, a connecting cover, a rotating shaft, a ceramic valve set, a valve base and a balancing valve set. The ceramic valve set has a first valve piece and a second valve piece attaching to each other, and a collecting trough is formed at the direction from the first valve piece to the second valve piece, and the second valve piece has a hot water inlet, a cold water inlet and a water outlet. The valve base has a receiving chamber to receive the balancing valve set formed by two symmetric engaging shells to provide a valve-shaft hole for a valve cover. The valve cover has two water-guiding slots and a moving valve that has two flow restricting openings and a stopping wall to automatically adjust the flow of cold and hot water to further maintain the water temperature.

A fuel injector has an orifice member having an aperture for injecting atomizing and metering fuel. The orifice member is made of a plate material. The orifice member is machined to form the aperture. Then, the orifice member is processed by at least two shot blasting process in opposite directions to remove burrs and trim edges of the aperture. After the process, the orifice plate is inspected by measuring an actual flow rate of the aperture. Then, the orifice plate is processed by a shot blasting process again in accordance with the measured flow rate and a target flow rate.

The invention discloses a rare cell filter and application thereof. The filter comprises a filter pipe, wherein an opening is formed at one end of the filter pipe; an elastic sealing head sliding along the inner wall of the filter pipe is arranged inside the filter pipe; a syringe sliding along the inner wall of the filter pipe is arranged above the elastic sealing head in a matching manner; the syringe comprises a bobbin with openings at two ends; a barrel cover is arranged above one end of the bobbin; a filter support ring is arranged at the opening of the bobbin below the barrel cover; a micro-hole array filter membrane with covered opening is arranged on the filter support ring; the bobbin, the elastic sealing head and the filter support ring form a recovery pool; the filter membrane is formed by a conical micro-hole and dual layers of micro-hole arrays with different calibers; a sample tube is arranged inside the recovery pool; one end of the sample tube passes through the filter support ring and extends into a filter cavity; the other end of the sample tube passes through the elastic sealing head and extends into a sealed cavity. By adopting the rare cell filter, the problems of poor selectivity and sensitivity for capturing rare cells are solved, and the rare cell filter is applicable to efficient capture, cultivation and analysis of circulating tumor cells and fetal circulation cells in human peripheral blood.

A surgical apparatus 10, used in a phaco procedure, includes a filter assembly 44 / 44a for near, or complete, elimination of air bubbles in an aspiration line of an aspiration system 38. The apparatus 10 includes a suppressor 110, which, during an aspiration mode of operation, maintains a fluid flow rate at 50 cc / min, and, upon an occlusion breaking free, dynamically decreases the fluid flow rate from a high surge rate to the rate at 50 cc / min. The apparatus 10 includes facility for operating in a reflux mode to direct unrestricted fluid flow through the aspiration line of the aspiration system 38.

The invention discloses a fluid bed tablet-coating machine, which is characterized by the following: possessing dry air inlet and tank of ventilating port; arranging air flow distribution plate and filter in the tank; arranging at least two big hole area on the same angular of even dispersing on the air flow dispersing plate; setting the perforated ratio of the big hole area at 65%; arranging guide barrel on the upper of the air flow dispersing plate; heading on each big hole area; possessing gap between the floor of the guide barrel and the air flow dispersing plate; arranging a dressing injector; corresponding to each guide barrel; projecting the dressing injector from the central hole of the big hole area of the air flow dispersing plate. This invention possesses high output, which can be fit for big scale industrial production.

The invention relates to a method and device for testing a calibration light source by using an X-ray pulse detector. The device comprises an X-ray pulse generation system and a standard detector calibration system, wherein the X-ray pulse generation system is used for generating X-ray pulse for testing the calibration light source through the standard detector calibration system. The method and device for testing the calibration light source by using the X-ray pulse detector have the advantages of being low in manufacturing cost, exquisite, scientific and reasonable, quantitative in parameter and stable in performance.