Water-fertilizer precise-quantity application device

A water-fertilizer precise-quantity application device is provided. A fertilizer quantitative controller is arranged at the bottom of the interior of a fertilizer container, and comprises a storage battery, a pump, an electromagnetic valve and a timing controller; power supplies of the pump and the timing controller are connected onto the storage battery, the pump is connected with a fertilizer conveying pipe provided with the electromagnetic valve, and the electromagnetic valve is connected with the timing controller. With adopting of the water-fertilizer precise-quantity application device, the electromagnetic valve opening time is controlled by adjusting a control adjusting switch of the timing controller so as to control the each-time fertilizer flow quantity, and water-fertilizer variable accurate quantitative application is achieved.

Manifold type micro-channel radiator with countercurrent area

The manifold micro-channel radiator comprises a micro-channel upper cover plate, a Z-shaped manifold structure, a micro-channel splitter plate and a micro-channel heat sink, the Z-shaped manifold structure is provided with an inlet section and an outlet section, the inlet section and the outlet section are both trapezoidal areas, the inlet section is communicated with four fluid inlets, the outlet section is communicated with four fluid outlets, and the micro-channel splitter plate is communicated with the micro-channel heat sink. The outlet section is communicated with the four fluid outlets; the bottom of the micro-channel heat sink is in direct contact with the surface of a heat source; a unique design is adopted for the micro-channel splitter plate, pure countercurrent flowing of fluid in a micro-channel is achieved, and the uniformity of the temperature of a heat source surface is improved; in the Z-shaped manifold structure, heat sources are not applied to bottom channels of the first ...

Convergence-divergence micro-channel radiator with longitudinal vortex generator

The invention discloses a convergence-divergence micro-channel radiator with a longitudinal vortex generator, which comprises a substrate and a cover plate, the cover plate is arranged above the substrate, the substrate is provided with a plurality of micro-channels, and the micro-channels comprise convergence micro-channels and divergence micro-channels which are arranged at intervals; a plurality of pairs of longitudinal vortex generators are arranged in each micro-channel; the micro-channel radiator is small in size and has good heat transfer performance, the combination of the longitudinal vortex generator and the convergence-divergence micro-channel enables the micro-channel radiator to have the advantages of the longitudinal vortex generator and the convergence-divergence micro-channel, compared with a smooth straight channel, the heat exchange amount is higher, the heat exchange rate is higher, the overall pressure drop is lower, and the heat dissipation effect of an electronic device ...

Heat dissipation device of eight-angle prism shape

The invention provides a heat dissipation device of an eight-angle prism shape. The heat dissipation device comprises a cuboid in the center and a fin set on the periphery of the cuboid. The cross section of the cuboid is of a square shape. The fin set comprises four main fins extending outwards from the four opposite angles of the square shape, first auxiliary fins extending outwards from the main fins and second auxiliary fins extending outwards from the four sides of the square shape. The first auxiliary fins, extending towards the same direction, of one main fin are parallel with one another and parallel with the second auxiliary fins extending towards the same direction. The extension ends of the main fins and the extension ends of the auxiliary fins form an equilateral octagon. According to the heat dissipation device, the structure is optimized, so that the heat exchange efficiency is maximized, the energy is saved, and the purposes of environmental friendliness and energy conservation ...

Column-shaped radiator changeable in fin taper

The invention provides a column-shaped radiator changeable in fin taper. The radiator comprises a cuboid in the center and a fin set located on the periphery of the cuboid. The cross section of the cuboid is square, and the fin set comprises main fins and first auxiliary fins, wherein the main fins extend outwards from four opposite angles of the square, and the first auxiliary fins extend outwards from the main fins. The fin set further comprises second auxiliary fins extending outwards from four sides of the square, the first auxiliary fins, extending in the same direction, of the same main fins are in parallel, and the thickness of the auxiliary fins changes according to certain taper. The structure of the radiator is optimized, so that the heat exchange efficiency is maximized, energy is saved, and the purposes of environment friendliness and energy saving are achieved.

Linear closed finned tubular radiator with anticorrosion coatings

The invention provides a linear closed finned tubular radiator with anticorrosion coatings. The radiator comprises an upper header, a lower header and finned tubes. The finned tubes are connected with the upper header and the lower header, and the anticorrosion coatings are arranged in base tubes. The linear closed finned tubular radiator has the advantages that the structures of the finned tubes are optimized, so that the heat exchange efficiency can be optimized, energy can be saved, and purposes of protecting environments and saving the energy can be achieved.

Solanum melongena L. bacterial-wilt-resisting solanum melongena stock and grafting and cultivation method for grafting solanum melongena onto nicotiana

The invention discloses a Solanum melongena L. bacterial-wilt-resisting solanum melongena stock and a grafting and cultivation method for grafting solanum melongena onto nicotiana. The Solanum melongena L. bacterial-wilt-resisting solanum melongena stock is the Solanum melongena L. bacterial-wilt-resisting solanum melongena stock with the number of G2011-203, and the preservation serial number of the Solanum melongena L. bacterial-wilt-resisting eggplant stock in the China Center for Type Culture Collection is CCTCC NO.P201309. According to the grafting and cultivation method for grafting the solanum melongena onto the nicotiana, the Solanum melongena L. bacterial-wilt-resisting solanum melongena stock serves as a stock, a nicotiana crop serves as a scion, and grafting is carried out. The Solanum melongena L. bacterial-wilt-resisting solanum melongena stock has the advantages of having the high performance of resisting the bacterial wilt, being strong in growth vigor, and having wide affinity ...

Bone-setting silky fowl ointment for treating osteological diseases and its preparation and application

Bone-setting silky fowl ointment for treating osteological diseases and its prepn and application

The bone-setting silkyl fowl ointment as one bone wound and disease treating medicine is prepared with silkyl fowl, curcuma root, myrrh, corydalis tuber, ground beetl and other 24 kinds of Chinese medicinal materials and through heatingin sesame oil to 200-300 deg.c and after keeping leat for 15-25 hours mixing with minium. It is used to treat cervical spondylosis, protrusion of lumber interverterbral disc, femoral head necrosis, arthritis, hyperosteogeny, fracture and other bone diseases, and has the features of high curative rate, low cost and no toxic side effect.

Plate heat exchanger and method for calculating criterion numeral of plate heat exchanger

The invention provides a plate heat exchanger and a method for calculating the criterion numeral of the plate heat exchanger. A main flow area, a flow guiding area and a branch flow area are arranged on a heat exchange plate of the plate heat exchanger, and a plurality of spiral coils are arranged on the main flow area, and are of a net shape. Fluid passes through the portion, on the inlet side of the heat exchange plate, of the branch flow area and the portion, on the inlet side of the heat exchange plate, of the flow guiding area in sequence from an inlet of the heat exchange plate, and enters the main flow area, and the fluid passes through the main flow area to carry out heat exchange, continues to flow through the portion, on the outlet side of the heat exchange plate, of the flow guiding area and the portion, on the outlet side of the heat exchange plate, of the branch flow area, and enters an outlet of the heat exchange plate. According to the plate heat exchanger and the method ...

Steam-water heat exchanging system with elastic tube bank

The heat exchanger set is composed of heat exchanger, pressure-stabilizing tank, water tank, main and circlating water pipe, steam pipe, condensation water pipe, water supply pump, circulating pump and temp. and pressure measurers, and features using elastic tube bundle as the element to transfer heat which can make the flowing water induce vibration to intensify the heat transfering. The set for supplying hot water using less steam source has thermal efficiency up to 95% the heat transferring parameter over 3200 W/sq.m. deg.C, and automatic scale-removing and heat-accumulating function.

Linear type closed finned tube

The invention provides a linear type closed finned tube which comprises a round base tube, a first fin, a second fin, a third fin and a fourth fin, wherein a first connecting piece is arranged between the first fin and the second fin, a second connecting piece is arranged between the third fin and the fourth fin, and the first connecting piece and the second connecting piece are both linear type metal plates. According to the linear type closed finned tube, the structure is optimized, heat exchanging efficiency is maximized, and therefore energy is saved and the environment is protected.