37results about How to "Separation of control" patented technology

This invention discloses a fan turbine casing inletting wind from two sides including a front cover plate, a back cover plate and a circular middle shell connecting the two, a front air-inlet and a back air-inlet are set on them separately, and the projection of the center of the front one on the plane where the back cover places is coincident with that of the back one characterizing that a curved panel projecting downward is connected between the down edges of the two plates to shield the middle shell, so smoke can be led to the front and back air-inlets smoothly.

The invention discloses a 1/2 type tandem-blade type transonic speed centrifugal impeller, which comprises an inducer consisting of a front row of blades and a guide wheel consisting of a back row of blades, wherein the front and the back rows of the blades have three-dimensional distorted shapes and are divided, staggered and overlapped with one another. The centrifugal impeller is characterized in that the number ratio of the front row of the blades to the back row of the blades is 1:2. In the centrifugal impeller, the front row of the blades are arranged with low consistency and the back row of the blades are arranged with high consistency so that the effective through-flow area is enlarged and the blockage flow is increased; and the evenness of the flow at the outlet of the impeller is improved so that the wake losses and the shock losses between the impeller and a diffuser are reduced, the efficiency of the whole stage is improved, and the surge margin is enlarged.

The polygelatin peptide injection is prepared with gelatin of ox bone, pig bone, etc. and through dissolving, hot degradation in controlled condition, cross-linking with non-toxic cross-linking agent, mixing with electrolyte, adsorption, clarification and stepped filtering to separate cross-linked spherical molecule. During the preparation, the molecular weight of the cross-linked matter is well controlled.

The invention discloses a direct liquid level boundary indicator, which is mainly formed by sequentially connecting and assembling a sensor casing, a boundary floater, a liquid level floater, a mounting flange and a transmitter casing into a whole. When the direct liquid level boundary indicator is in use, the sensor casing is provided with a sensor through connection, and then the he direct liquid level boundary indicator is put into mixed liquid of oil and water to measure an oil-water boundary.

The invention discloses an artificial stone. The artificial stone is prepared mainly from mineral powder, stone powder, pigment, resin, an accelerant and a curing agent. The artificial stone is simple in production process, and prepared by grouting, pouring, moulding, curing and demoulding without high-temperature calcination and is low in energy consumption. Compared with ceramic and a natural stone, the prepared artificial stone has the advantages of light weight, environment protection, good flame retardant property, no radiation, relatively good processability and the like, and can achieve batch production; different pigments can be doped in the artificial stone producing process according to different requirements to adjust the colors of stones so as to produce artificial stones with different colors and textures.

The invention relates to a magnetic anchoring system realizing separation and combination of built-in gripping tongs for magnetic control laparoscopic surgery. The magnetic anchoring system comprisesthe built-in gripping tongs, operation tongs and an in-vitro anchoring device, wherein the built-in gripping tongs comprise a hollow sleeve rod, a first permanent magnet, an elastic plate, a first spring, a non-damage tongs clamp head and the like; the operation tongs comprise an operation sleeve rod, a built-in sleeve rod, an operating rod, a second permanent magnet, a second spring and the like;the in-vitro anchoring device comprises a cylindrical anchoring magnet and an anchoring magnet shell, and is used for pulling the built-in gripping tongs to move in the abdominal cavity in vitro. According to the magnetic anchoring system realizing separation and combination of the built-in gripping tongs for the magnetic control laparoscopic surgery, the permanent magnet is arranged at the headend of the operation sleeve rod, the permanent magnet is also arranged at the tail end of the built-in gripping tongs, so that the combination and separation of the built-in gripping tongs can be conveniently controlled, a push rod is arranged in the operation sleeve rod, so that the head end of the elastic plate is controlled to grip the tissue.

The invention discloses a kitchen garbage crushing device. The kitchen garbage crushing device comprises a box. The top wall of the box is provided with a feed cavity with an upward opening. The leftsidewall of the feed cavity is provided with a gripper. A connecting rod extending backwards is rotatably mounted on the front and rear walls of a rotating groove. The connecting rod is fixedly connected with a partition plate in the rotating groove. The partition plate is connected with the bottom wall of the rotating groove through a supporting spring. A filter cavity communicating with the feedcavity is arranged on the lower side of the feed cavity. A crushing cavity with a beveled bottom wall is arranged on the lower side of the filter cavity. The crushing cavity communicates with the filter cavity through a transition cavity. The bottom wall of the crushing cavity is provided with a drainage outlet extending downwards to penetrate through the box, and a filter screen is arranged at the drainage outlet. The left sidewall of the crushing cavity is connected with a discharge cavity penetrating through the box.

The invention belongs to the field of organic synthesis, and discloses a synthesis method of an alpha-cyano quaternary carbon substituted tetrahydroisoquinoline compound, which comprises the followingsteps: converting an isoquinoline compound into a high-activity imine salt intermediate, and carrying out addition reaction on the high-activity imine salt intermediate and a cyano source to obtain the alpha-cyano quaternary carbon substituted tetrahydroisoquinoline compound. The invention is simple and practical to operate, mild in reaction condition and high in yield and purity of the obtainedproduct. The invention is suitable for synthesis of isoquinoline compounds, and is especially suitable for synthesis of alpha-cyano quaternary carbon substituted tetrahydroisoquinoline compounds.

The present invention relates to a column temperature controlling high borosilicate glass interlayer chromatography column, wherein the upper end of a chromatography column body is provided with a material inlet, a sand core is arranged inside the chromatography column body, the lower end of the chromatography column body is provided with a material outlet pipe, the material outlet pipe is provided with a material outlet control valve, the diameter of the material outlet pipe is less than the diameter of the chromatography column body, a jacket layer is arranged on the outer periphery of the chromatography column body, the outer periphery of the chromatography column body is completely surrounded by the jacket layer, a cavity is formed between the jacket layer and the chromatography column body, the jacket layer is provided with a carrier inlet and a carrier outlet, and the temperature of a heating agent is maintained at the required temperature T DEG C during the chromatography process so as to continuously supply heat for the filler in the chromatography column body and the elution solvent. According to the present invention, with the column temperature controlling high borosilicate glass interlayer chromatography column, the column separation column temperature can be well controlled, the non-room temperature separation of the temperature sensitive specific component can achieved, the separation efficiency of the soluble components in the hot solvent can be improved, and the column temperature controlling high borosilicate glass interlayer chromatography column are widely used in the column chromatography separation process requiring the column temperature control in the fields of chemistry, chemical industry and pharmacy, and has promotion values.

The invention relates to a blade, a centrifugal fan and electrical equipment. The thickness of the blade is gradually increased and then gradually decreased from one end of a tail edge 12 of the bladeto one end of a front edge 11 of the blade, and the thickness of the tail edge 12 of the blade is larger than 1.5 mm. The centrifugal fan comprises an impeller 3 and a plurality of blades arranged onthe impeller 3, wherein the plurality of blades are evenly distributed in the circumferential direction of the axis of the impeller 3, and the tail edge 12 of each blade is located on the outer diameter circle of the impeller 3. The blade, the centrifugal fan and the electrical equipment have the effects of high flow, low noise and high efficiency, meanwhile, the injection molding strength of theblade can be improved, and large-batch injection molding production of the blade is facilitated.

The invention discloses a toughening modification preparation method of benzoxazine, relates to the technical field of composite materials. The method solves the defects of insufficient toughness and poor film-forming property of the existing benzoxazine, and comprises the following steps: adding 1, 3-bis (4-aminophenoxy) benzene, a benzoxazine resin monomer and formaldehyde into a glass bottle, and adding N-methyl pyrrolidone as a solvent to obtain a mixed solution; stirring the mixed solution at room temperature until the mixed solution is completely dissolved, filtering and pouring onto a glass plate; curing the mixed solution poured on the glass plate in the step 2 at 50-80 DEG C for 6-12 hours, curing at 180-200 DEG C for 2-6 hours, and naturally cooling to obtain a polyhexahydrotriazine/benzoxazine condensate film; wherein the modified benzoxazine cured product keeps good thermal performance, the mechanical property of benzoxazine is remarkably improved, and the problem that the benzoxazine is poor in film-forming property is solved.

The invention discloses a two-dimensional art activity rack. The two-dimensional art activity rack comprises two rack support rods, the bottom of the rack support rods is fixedly connected with a racksupport leg, a rack plate is arranged between the two rack support rods, and the bottom of the rack plate is fixedly connected with a connecting rotating rod. The two-dimensional art activity rack facilitates adjustment of space of a storage cavity; by controlling to separate a movable outer plate and a fixed inner plate, a material stopping rod can extend outside the movable outer plate to retain an object rom falling outside the rack plate, so that protection over the object can be improved, the storage space can be enlarged, storage of more object as well adjustable of the rack plate can be facilitated, and the advantage of adjusting convenience can be achieved; further, the problem that existing racks are inconvenient to adjust to result in limitation of storage space, storage failureof certain objects and influence on object storage can be solved.

The invention discloses electronic equipment and a heat dissipation method therefor, and aims to improve heat dissipation efficiency of the electronic equipment and reduce power consumption and noise of the electronic equipment. The method comprises the steps of detecting whether the bottom shell D-cover of the electronic equipment is in contact with a human body or not; and when the D-cover of the electronic equipment is not in contact with the human body, controlling the D-cover to be connected with a heat dissipation module.

The invention discloses a bionic front and back adjustable variable camber guide vane which comprises a front vane and a back vane, the tail edge of the front vane is round, the front edge of the back vane is round, the tail edge of the front vane and the front edge of the back vane are tangent to the intersection point of a mean camber line and the tail edge of the front vane, and the front vane is formed by stacking a series of elements periodically changing along the front edge of the front vane. The front edge of the front blade is distributed in a wave-shaped curve mode, the wave-shaped curve is a sine curve, and the curve equation of the wave-shaped curve is LEh = LEorii + cos (Hb/W * pi) * A. The invention further discloses a design method of the bionic front-back adjustable camber-variable guide vane. According to the invention, the front edge of the front and back adjustable and variable camber guide vane is provided with the knot-shaped bulge which changes according to a sinusoidal curve and has a certain wavelength and amplitude, so that the effects of controlling the airflow separation of the back vane, reducing the total pressure loss of the variable camber guide vane and widening the available rotating angle range are achieved.

The invention discloses a hydraulic control mechanism for an automatic clutch in a hybrid electric vehicle. The hydraulic control mechanism comprises an oil pumping system, an energy storage system and a working cylinder system, wherein a first high-pressure oil pipe is connected between the energy storage system and the working cylinder system; a second high-pressure oil pipe and a low-pressure oil return pipe are connected between the oil pumping system and the energy storage system; a reversing valve for controlling the circulation direction of hydraulic oil and a pressure sensor used for measuring the pressure in the energy storage system are mounted in the energy storage system; a displacement sensor is mounted in the working cylinder system and used for measuring displacement of theclutch driven by the working cylinder system; and the reversing valve, the pressure sensor and the displacement sensor are all connected with a vehicle-mounted control system and can perform information exchange together with the vehicle-mounted control system. The hydraulic control mechanism is simple in structure, convenient to assemble, disassemble and maintain, and small in space occupation; and as the electronic sensing devices are adopted, the control precision and the reaction sensitivity can be improved.

The invention discloses a device and process for separating and reclaiming difluoro-monochloroethane during production of monofluoro-dichloroethane. The device comprises a cooling tower, a cooling tower kettle, a monofluoro-dichloroethane reclaiming groove, a water groove, a water circulating pump, a water cooler and a de-foaming device. Cooling tower kettle liquid is circularly washed and cooled by circulating water of which the temperature is 5 to 10 DEG C; after being cooled, the monofluoro-dichloroethane of which the boiling point is 32 DEG C is layered by the cooling tower kettle, and the monofluoro-dichloroethane and water are in the lower layer and the upper layer respectively; the water is in the upper layer and overflows to the water groove; after being cooled by the water cooler, the water in the water groove is circulated by the circulating pump; the monofluoro-dichloroethane is discharged from the bottom of the cooling tower kettle to be reclaimed into the monofluoro-dichloroethane reclaiming groove; the difluoro-monochloroethane of which the boiling point is 9.8 DEG C below zero is delivered to the de-foaming device from a gas phase outlet in the top of the cooling tower; the separated water flows back to the cooling tower through a counter flow pipe; and the difluoro-monochloroethane is reclaimed into a reclaiming system through the de-foaming device. The monofluoro-dichloroethane can be reclaimed, a fluorocarbon resource is fully utilized, and the service life of a reclaiming compressor of the difluoro-monochloroethane is also prolonged.