10results about How to "Reduce shear" patented technology

The application discloses a heterogeneous solution ground volumetric distribution stepless adjusting device and a use method, and the device comprises a reciprocating mechanism and a hydraulic reversing mechanism; the hydraulic reversing mechanism comprises a sleeve base and a reversing shaft base, a hydraulic unit is arranged in the sleeve base, a reversing unit is arranged in the reversing shaft base, the hydraulic unit and the reversing unit are connected through an intermittent mechanism, and the reversing shaft base is communicated with the sleeve base; the reciprocating mechanism is connected with the reversing unit, and the reciprocating mechanism leads out an output shaft and is used for connecting a damping device. The volumetric structure is adopted to suck and discharge the heterogeneous solution, the shearing of polymer molecules and particles in the injection liquid in the heterogeneous solution injection process is reduced, the viscosity of the heterogeneous solution is ensured, and low-shearing injection is realized.

The present application relates to a kind of foldable garden maintenance pruning device.It solves the problem of single function and low efficiency of pruning tool in prior art.It includes folding connecting rod, folding connecting rod one end is provided with pruning main body, folding connecting rod is slidably provided with sliding drive mechanism for driving pruning main body to open and close, extension saw body is arranged in pruning main body, and extension saw body one end is provided with linkage assembly connected with sliding drive mechanism and linked with sliding drive mechanism, folding connecting rod middle part is provided with folding positioning mechanism.The advantages of the present application are: collection cutting and draw saw are integrated, function is rich, and effectively improve the cutting efficiency, it is convenient to fold and carry, and use flexibility is good.

This invention discloses a method for disrupting the cell walls of structurally heterogeneous microorganisms based on the synergistic vibration of multi-size media and its application. The method includes the following steps: (1) constructing a composite cell-dispersing media system with multi-size characteristics and filling it into a cell-dispersing tube; (2) injecting the microbial sample to be disrupted into the cell-dispersing tube and oscillating it at a linear velocity of 6-7 m / s for 30-90 seconds at 4-25 ℃; (3) after cell disruption, separating the mixed composite cell-dispersing media system and the solution to obtain a cell-dispersed solution containing intracellular products. The beneficial effects of this invention are: through the synergistic effect of multi-scale shear forces, it significantly improves the lysis efficiency of difficult-to-disrupt pathogens such as Mycobacterium tuberculosis, Cryptococcus, and Aspergillus, effectively protects the nucleic acid integrity of RNA viruses, has high cell disruption uniformity, good RNA protection, can be standardized and adapted to automated platforms, and is suitable for the pretreatment of complex clinical samples.

The application provides a wave-shaped distribution channel system for a super-multi-mode cavity product, which has an inwardly concave wave-shaped flow channel wall, and the two sides of the wave-shaped flow channel wall are oppositely inclined to the corresponding connected vertical flow channels. Compared with the prior art, the angle between the horizontal flow channel and the vertical flow channel is controlled through the wave-shaped structure of the wave-shaped flow channel wall, so that the shear on the molten glue is reduced, and the size of the shear can be controlled through the angle, thereby facilitating the regulation of the generated backflow, and making the temperature and pressure of the molten glue more uniform. Moreover, the inner surface shape of the wave-shaped flow channel wall is a smooth transition surface, which can further reduce the shear.

The utility model provides an intake and exhaust silencer for a high-speed fan. The intake and exhaust silencer comprises an outer steel plate, four sides of the outer steel plate are encircled and spliced into a rectangular square tube, a fixed shutter is mounted at an air inlet end of the rectangular square tube, a movable shutter is mounted at an air outlet end of the rectangular square tube, and a plurality of inclined sound insulation plates are fixed in the rectangular square tube in parallel; and on the projection of the end part of the rectangular square tube, the sound insulation plate completely covers the inner cavity space of the rectangular square tube. The structure that the inclined sound insulation plates are fixed side by side is adopted, the airflow shearing capacity is greatly reduced and the multi-stage noise reduction effect is achieved based on the flow guiding and bending effects of the sound insulation plates in a very small space, and therefore the noise reduction effect of a small-size silencer is greatly improved, and structural redundancy is effectively avoided; the noise reduction device is especially suitable for industrial production scenes with limited volume and high requirements on noise reduction effect.

The invention discloses an anti-hemolysis hydrogel coating as well as a preparation method and application thereof, a micron-sized porous structure and a hydrophilic silane bonding layer are constructed on the surfaces of various base materials, and the adhesive force of the hydrogel coating and the base materials is remarkably enhanced through a physical topology winding and covalent bond connection method. Through the methods of spraying, dipping, coating, mold forming and the like, the device can be suitable for blood contact medical instruments with different shapes and materials; by adjusting the formula and preparation process parameters of the hydrogel, the special requirements of different medical instruments can be met, and the hydrogel has wide applicability and good expandability. Through optimized materials and design, the anti-hemolysis hydrogel coating disclosed by the invention has remarkable technical advantages in the aspects of reducing hemolysis risk, improving biocompatibility, simplifying the structure of medical equipment and the like.

The utility model discloses a flexible printed circuit (FPC) connector capable of reducing friction of a graphene flat cable, which relates to the technical field of connectors and comprises a connector shell, a connector upper cover is rotatably arranged on the connector shell, and a terminal body is butted between the connector shell and the connector upper cover. And a butt joint flexible flat cable is arranged between the connector shell and the connector upper cover. According to the FPC connector capable of reducing friction of the graphene flat cable, when a butt joint flexible flat cable needs to be plugged and unplugged, the connector upper cover is turned upwards, the shaft end of the connector upper cover rotates, the protruding part of the shaft end does not abut against the abutting block, at the moment, the upper push plate pops up upwards under the driving of the elastic acting force of the auxiliary spring, and then the flexible flat cable is plugged and unplugged. The butt-joint flexible flat cable is arranged on the plastic soft shell and abuts against the butt-joint flexible flat cable, so that the butt-joint flexible flat cable slightly moves upwards, contact between the butt-joint flexible flat cable moving upwards and the connector shell can be reduced, friction between the butt-joint flexible flat cable and the plastic soft shell is reduced, and graphene on the lower surface of the butt-joint flexible flat cable is further prevented from falling off.

The utility model relates to a mast technical field especially relates to a kind of reinforcing mast mechanism.Its technical scheme includes fixed base and rigging, and the rigging includes support plate, the side portion of support plate is rotatably connected with the winding roller with anti-drop plate, fixedly installed with pull cord on the winding roller, the outer wall of mast body and located the upper positioning sleeve of lower positioning sleeve is equipped with upper positioning sleeve, and the end of pull cord is fixedly connected with upper positioning sleeve;Support plate is fixedly installed at the top of fixed base.The utility model is by winding roller using pull cord to exert tension on upper positioning sleeve from four directions, to support the position of fixed mast body, additional upper positioning sleeve makes it be located at two-thirds height of mast body, originally concentrated in the load of mast body near bottom is dispersed to upper positioning sleeve, lower positioning sleeve and upper positioning sleeve share stress, greatly reduce bending moment, shear, avoid local excessive stress, lead to mast body bending.

The utility model relates to fish ball forming machine technical field especially fish ball forming machine unloading device, the utility model discloses including through screw can dismantle and set on fish ball machine and along the vertical setting of up and down height direction's stuffing hopper, the drive rod of rotation and set on the upper portion of stuffing hopper, the component of driving away stuffing of can dismantle and set on the lower extreme of drive rod and set on drive rod and be used for driving drive rod axial rotation's control component. The device is aimed at reducing the peripheral stuffing slip as far as possible.

The application discloses a filling metering device, which comprises a discharging mechanism, a metering assembly, a blanking channel and a discharging channel. The metering assembly is arranged in the discharging mechanism, the discharging mechanism can be lifted along the metering assembly, so that the material in the discharging mechanism enters the metering channel of the metering assembly, the blanking channel is located between the metering channel and the discharging channel, and the blanking channel can be horizontally moved to be connected with or disconnected from the metering channel and the discharging channel. The application further discloses a filling metering method, which comprises the following steps: S1, the discharging mechanism is lifted, so that the material in the discharging mechanism enters the metering channel of the metering assembly; S2, the discharging mechanism is lowered, and the blanking channel is horizontally moved to be connected with the metering channel and the discharging channel; and S3, the material is discharged and filled from the metering channel in sequence through the blanking channel and the discharging channel. The application has the advantages of simple structure, reduced material crushing and small occupied stroke space.