209results about How to "Improve closing effect" patented technology

A pivot assembly for attaching a closing wheel arm to a bearing housing of a no-till drill has a pair of sleeve bearings, a pair of seals, and a pivot bushing or pivot pin that extends through the sleeve bearings and seals. The sleeve bearings are press fit into opposite ends of a bore of the bearing housing and have grooves formed across bearing surfaces thereof for grease to flow to outer ends of the bearings. The seals are also press fit into the opposite ends of the bearing housing bore. The pivot bushing or pivot pin is installed into the sleeve bearings with an outer surface thereof providing a close-running fit with the bearing surfaces of the sleeve bearings. The close-running fit has a clearance within the range of 0.001 to 0.002 inch and can be provided by passing a reamer through the inner bore of the sleeve bearings.

The invention relates to the field of precise engineering survey, in particular to a method for rapidly measuring a foundation pile control net (CPIII) of a rapid transit railway on the basis of movable laser radar measuring technology and high-speed digital imaging technology. control net (CPIII) measurement data is obtained by using a movable high-precision measurement system comprising a laser scanner (1), a GPS/IMU positioning and orientating system (2), a high-speed digital imaging system (3), an industrial computer (4) and a power supply device (5); and united weighted adjustment is carried out on advanced net data, united measured data and auxiliary measurement points extracted from images to obtain high-precision control net (CPIII) control point coordinates. The invention can greatly shorten the measurement time of the control net (CPIII), overcomes the defect of little total correlation of discrete single-point measurement, carries out integral adjustment on all control points, has good closing property and high relative precision, obtains plane and elevation coordinates of all control points, and greatly simplifies the measurement work of the control net (CPIII).

A needle-free connector includes a hollow connector, an elastic block, and a switch assembly. The inner perimeter of the hollow connector forms a first annular wall and a second annular wall. The elastic block is disposed in the hollow connector. The switch assembly has a stop member and a guide tube connected to the stop member, the stop member being pressed between the annular block and the elastic block, the guide tube being disposed in the hollow connector, the external perimeter of the stop member forming a first annular portion against the first annular wall and a second annular portion against the second annular wall, a groove being disposed between the first annular portion and the second annular portion of the stop member, the groove being connected to the guide tube. Thus, the structure stability and closing performance are achieved such that the outside air cannot leak into the connector.

A needleless connector includes a hollow connector, a spring, and a switch assembly. The inner perimeter of the hollow connector forms a first annular wall and a second annular wall. The spring is disposed in the hollow connector. The switch assembly has a stop member and a guide tube connected to the stop member, the stop member being pressed between the annular block and the spring, the guide tube being disposed in the hollow connector, the external perimeter of the stop member forming a first annular portion against the first annular wall and a second annular portion against the second annular wall, a groove being disposed between the first annular portion and the second annular portion of the stop member, the groove being connected to the guide tube. Thus, the integral structure stability and good closing performance are achieved such that the outside air cannot leak into the connector structure.

The invention relates to nanostructured lipid carrier loaded with phenylethyl resorcinol. The carrier is loaded with the active component phenylethyl resorcinol (SymWhite 377) and is characterized in that the nanostructured lipid carrier comprises the following compositions in percent by weight: 0.5%-2% of phenylethyl resorcinol, 2%-5% of a nemulsifier, 5%-10% of a composite lipid material and 83%-92.5% of deionized water. The invention also relates to a preparation method of the nanostructured lipid carrier. The invention also relates to a skin-care product or a cosmetic containing the nanostructured lipid carrier. The nonostructured lipid carrier has excellent stability and water solubility, the preparation method is simple and controllable and good in repeatability, and is applicable to preparation of cosmetic containing phenylethyl resorcinol.

The invention relates to a sealing valve with double valve plates, which comprises a left valve body, a middle valve body, a right valve body, a left valve plate, a right valve plate and a valve plate linkage mechanism, wherein the left valve body and the right valve body are respectively in sealing connection with the middle valve body; a sealing ring is arranged between the left valve plate and a medium inlet on a left valve body as well as the right valve plate and a medium outlet on the right valve body; and the valve plate linkage mechanism is respectively hinged with the left valve plate and the right valve plate. The sealing valve with double valve plates has the advantages as follows: (1), the valve structure is simple and compact; (2), the operation is convenient; (3), no leakage of poison gas when opening or closing the valve guarantees the safety of workers; (4), the closing effect of the valve is better, and the other valve plate supplies the guarantee in case that one valve plate leaks the gas; (5), the valve can replace existing various blind valves, butterfly valves, ball valves and sluice valves, and so on; and (6), the jacking press function of the valve plate linkage mechanism results in tighter closing and better sealing of the valve.

A separator for batteries, which is obtained by laminating a modified porous layer that contains a fluorine-based resin and inorganic particles or crosslinked polymer particles on one surface of a polyolefin microporous membrane having a thickness of 16 μm or less. This separator for batteries satisfies formula (1) and formula (2) described below, and the polyolefin microporous membrane is characterized in that (a) the shutdown temperature thereof is 135°C or less and (b) the air resistance change ratio thereof is 1 × 104 sec/100 cc/°C or more. A method for producing this separator for batteries. 0.01 ≤ absT(1200) ≤ 0.30 (1) absT(1200): the absorbance per a thickness of 10 μm of the polyolefin microporous membrane of the absorption having a peak at around 1,200 cm-1 as determined by infrared spectrometry (a transmission method) in cases where the modified porous layer is separated from the polyolefin microporous membrane 0.001 ≤ absR(1200) ≤ 0.030 (2) absR(1200): the absorbance at the maximum peak at around 1,200 cm-1 as determined by infrared spectrometry (a reflection method) of a surface of the polyolefin microporous membrane, said surface being on the reverse side of the modified porous layer. Consequently, the present invention provides: a separator for batteries, which has good adhesion to an electrode, excellent shutdown performance and excellent electrolyte solution permeability, and which is suitable for high-capacity batteries; and a method for producing this separator for batteries.

The invention relates to an overhead rail-mounted spiral high-efficiency flatting system which comprises a bearing gantry and a track (1), a spiral flatting machine (2) and an electric control system (3), wherein the spiral flatting machine (2) comprises a spiral pushing mechanism, a lifting mechanism, a frame structure and a walking mechanism; and the spiral pushing mechanism serves as the main working mechanism of the flatting system to carry out flatting operation. The system adopts an operation method similar to that of a workshop bridge-type crane, the spiral flatting machine (2) walks on the high-altitude track which is borne by the bearing gantry, and the flatting operation is carried out to materials in a compartment from the upper part of the train compartment (4) through two groups of left screws and right screws which are lined in a 'linear' shape in parallel and scrapers on the side surfaces of the two groups of screws. According to the overhead rail-mounted spiral high-efficiency flatting system, leveling operation can be carried out to sharp-angled material piles which are distributed in the compartment randomly through the screws and the pushing of the scrapers, so that manual flatting operation is fully replaced, and the overhead rail-mounted spiral high-efficiency flatting system has the characteristics of good flatting effect, high efficiency, high adaptability, low energy consumption, safety, reliability and the like.

A float valve structure according to the invention includes a case; a valve seat that is formed at an end portion of the case, at a position near an upper opening of the case; a float that is arranged in a space formed in the case so as to be vertically movable; a valve support member that is arranged above the float and that can be inserted into the upper opening; a valve that is fitted to the valve support member and that can contact the valve seat; and a valve opening member that can vertically move together with the float and that opens at least one portion of the valve.

The present invention relates to a valve stem and valve core assembly and a valve comprising the assembly. The valve core sleeves the valve stem, an adjusting device is arranged on the valve stem, an elastic element is arranged between the adjusting device and the valve core, and a clearance exists among the valve core, the valve stem and the adjusting device, so that the valve core can move relative to the valve stem and the valve can have a good closing performance.

A vascular occluder includes a tubular support element and a sleeve of occluding material disposed within the support element. The sleeve is twisted in the support creating a constriction which closes the lumen of the sleeve. The lumen of the sleeve can nevertheless be opened by a guide wire or cannula for over the wire delivery. Once the guide wire or cannula are withdrawn from the sleeve, the sleeve will close again by the action of blood pressure thereon. Blood pressure will act to maintain closing pressure on the sleeve, thereby avoiding or reducing the risk of recanalization.

The invention relates to a latching device and a gas transmission station pressure regulation safety cut-off valve. The gas transmission station pressure regulation safety cut-off valve comprises the latching device, a pressure sensor, an MCU, an electromagnet and a gate valve body, wherein the pressure sensor is connected with the MCU; the MCU is electrically connected with the electromagnet; a control end of the electromagnet is connected with an ejector rod; the gate valve body is connected with a valve rod; and when pressure measured by the pressure sensor exceeds a threshold valve, the MCU sends out an electric signal, the electromagnet is energized, the electromagnet drives the ejector rod, the valve rod falls off, and the gate valve body is cut off. According to the latching device and the gas transmission station pressure regulation safety cut-off valve, when abnormities like overpressure and pressure loss of downstream pressure are detected, the safety cut-off valve can be quickly cut off; when emergency switching-off is executed, driving is carried out through the electromagnet, and the general service life reaches millions of times; besides, the electromagnet is energized, and the situation that an interlock driving device performs mistaken action is avoided; and the shock resistance is high, closing performance is good, and real-time feedback of the valve state can be achieved.

An occlusion device has a right disc made from a metal mesh having a plurality of openings, and a left disc having at least two skeletons that are covered by a membrane. Each skeleton passes through openings of the metal mesh to interlock the right and left discs, and a coil is wrapped around each opposing end segment of the skeletons. The skeletons can have a looped section where the skeleton is twisted or looped to cross or overlap itself. In addition, each skeleton can be formed from a braided strand of a plurality of wires.

The invention discloses a micro-electrode array chip before retina in the field of artificial vision. The micro-electrode array chip comprises a chip substrate, a lead buried in the chip substrate and micro-electrodes protruding the surface of the substrate and forming an array. The edge of the lower end of the chip substrate is provided with at least two lower suture line preformed holes; a micro-electrode arrangement lower area, a micro-electrode arrangement middle area, a micro-electrode arrangement upper area, a substrate reduction area and a substrate expansion area are sequentially arranged on the chip substrate from bottom to top; the substrate expansion area contains contacts corresponding to the electrode arrangement areas, and are connected with the micro-electrodes through the lead buried in the chip substrate; the chip substrate close to the lower end of the substrate reduction area is provided with at least three groups of two sclera cut suture line preformed holes, and two edges are respectively provided with at least two upper suture line preformed holes; and two sides of the substrate expansion area are provided with eye external suture line preformed holes. The micro-electrode array chip can stimulate retinal ganlion cells of the blind to recover partial vision of the blind, and avoids rhegmatogenous retinal detachment, choroidal hemorrhage and sympathetic ophthalmia caused by iatrogenic retinal breaks.

The invention discloses a composite rubber vertical rod telescopic plug plate and a use method thereof and belongs to the technical field of tunnel construction. By adoption of the composite rubber vertical rod telescopic plug plate and the use method thereof, the hidden dangers such as water leakage and slurry leakage of a tunnel are avoided. The telescopic plug plate comprises a trolley, a supporting base and rubber baffles. A back pasting type watertight strip is arranged between the tunnel roof and the uppermost layer rubber baffle. A watertight strip and/or a steel bar layer is arranged between every two adjacent rubber baffles. The supporting base is connected with a hoisting mechanism which is connected with the lowermost layer rubber baffle. The use method adopts the telescopic plug plate, and a lifting telescopic rod of a lifting mechanism is rotated, so that the connecting end of the lifting telescopic rod acts on the back pasting type watertight strip, and the back pasting type watertight strip is tightly attached to the tunnel roof to enable the watertight strips and the back pasting type watertight strip to be smoothly located between the second rubber baffle and the third rubber baffle as well as between the first rubber baffle and the tunnel roof correspondingly.

The invention discloses a flowing type efficient spiral material leveling machine. When the flowing type efficient spiral material leveling machine operates, travelling mechanisms are horizontally arranged on bilateral sideboards in the width direction of a train; a plurality of groups of incline proof mechanisms are connected to external sides of the travelling mechanisms through bolts; incline proof lateral rolling wheel groups which are arranged on external sides of the sideboards play roles in preventing the material leveling machine travelling from deorbiting; lifting mechanism supports are fixedly connected to symmetrical bases which are arranged at end beams at upper ends of the travelling mechanisms; ladder-shaped structures of the lifting mechanism supports are formed due to the fact that two short square steel are symmetrically welded to the middle of two long square steel perpendicularly; lifting mechanisms perpendicularly penetrate frame-shaped areas which are defined by the two short square steel and the long square steel; spiral material pushing mechanisms which are connected under the lifting mechanisms are perpendicular to rails in the length direction. According to the flowing type efficient spiral material leveling machine, power is supplied through a built-in power device, travelling and carriage crossing are directly performed on a carriage with the train sideboards serving as the rails, and scanning type cabin leveling operation of all carriages of the integral train is achieved. The flowing type efficient spiral material leveling machine has the advantages of completely replacing manual cabin leveling operation, meanwhile satisfying cabin leveling tasks at any places, being good in cabin leveling effect, high in efficiency, strong in adaptability, safe and reliable and the like.

The invention discloses a full automatic printed circuit board (PCB) stacker which comprises a PCB staking frame, a board pushing mechanism, a lifting mechanism and a combined type transmission device, wherein the board pushing mechanism is used for pushing a PCB into the PCB staking frame, the lifting mechanism is used for achieving lifting motion of the PCB staking frame and transmitting the PCB staking frame, and the combined type transmission device is used for transmitting the PCB staking frame. The board pushing mechanism, the lifting mechanism and the combined type transmission device are sequentially arranged from right to left. The full automatic PCB stacker is simple in structure, reasonable in design, simple and convenient to use and operate, capable of stably transmitting the PCB and the PCB staking frame to proper positions, simultaneously high in automation, capable of repeatedly working for a long time, and good in stacking effect, and saves a large amount of manpower labor.

The invention discloses a screen door for preventing mosquitoes and flies from entering rooms, which belongs to household sanitation fittings. The screen door comprises a rectangle gauze and soft doors leafs which consist of edge sealing cloths packed into the periphery of the rectangle gauze; the bottom edge of each soft door leaf is provided with a balance; the screen door is characterized in that: the folding edge of each two adjacent soft door leafs is provided with a rigid plastic strip; and mutual attractive permanent magnet blocks are arranged on the rigid plastic strip at interval. The screen door has the advantages of simple structure, convenient use, excellent closing effect and low cost.