119results about How to "Block inflow" patented technology

The invention relates to a method and device for preparing three-component sound-absorption cotton through electrostatic spinning-melt blowing-dry laying. The method includes the following steps of firstly, mixing 10-65 parts by weight of electrostatic spinning nanofiber, 10-65 parts by weight of melt blowing superfine fiber and 10-40 parts by weight of dry fiber to obtain an electrostatic spinning-melt blowing-dry laying three-component fiber net; secondly, conducting processing after required grams per square meter of net is laid in a crossed mode to obtain the finished sound-absorption cotton product. The electrostatic spinning nanofiber, melt blowing superfine fiber and dry fiber are combined to prepare the three-component sound-absorption cotton, the obtained sound-absorption cotton has nano-scale electrostatic spinning fiber, micron-scale melt blowing fiber and thick dry staple fiber of different fineness degrees, the porosity of the sound-absorption cotton is larger due to the electrostatic spinning fiber of a nanometer structure, the fiber close to nanoscale can resonate with sound waves so as to attenuate energy, and the all-frequency sound absorption effect can be enhanced by reasonably configuring through three types of fibers of different fineness degrees.

The invention discloses a closure device. The closure device comprises a first closure disc, a second closure disc, a waist part connected with the first closure disc and the second closure disc and at least one fluffy silk thread bundle structure, wherein the silk thread bundle structures are arranged on at least one of the two opposite disc faces of the first closure disc and the second closure disc and are close to the waist part. As the silk thread bundle structures are arranged adjacent to the waist part, the closure device can stop a damaged opening after being implanted, so that blood flow can be effectively stopped from flowing into the damaged opening from one side of the damaged opening and/or flowing into the other side of the damaged opening from one side of the damaged opening through the damaged opening, and residual bypass flow is avoided. In addition, the silk thread bundle structures are of a fluffy structure, the gap space in the silk thread bundle structures is filled with the blood flow flown in easily to form a seal structure, blood detained in the fluffy structure is prone to thrombus formation, the seal structure can be compacted further, the function of stopping the blood flow is enhanced, extra closure materials are not needed, and the biological risk after implantation is reduced.

The invention discloses a haze-proof cap, which comprises an upper case, a support frame, a memory cotton liner, a lower case, a transparent wind blocking cover, a filtering material assembly, a fan assembly, an LED (light emitting diode) lamp group, a rechargeable battery, a circuit board and a switch assembly, wherein the memory cotton liner is internally lined at the inner side of the support frame; the LED lamp group and the rechargeable battery are assembled on the support frame; the circuit board and the switch assembly are assembled on the lower casing; the support frame, the upper case and the lower case are jointly assembled to form a C-shaped cap body; the transparent wind blocking cover is assembled at the sealed end of the cap body; the filtering material assembly and the fan assembly are assembled and arranged at the opening end of the cap body and filtered and purified air is input into a space formed at the inner side of the transparent air blocking cover through an air guide pipe. The haze-proof cap has the advantages that the wearing is simple and convenient; the three-dimensional air purification effect is achieved in a narrow and small space in the mouth and nose position; the use performance is safe and reliable; the invasion caused by outgoing in haze weather is effectively avoided.

The invention discloses a thermal treatment device for a metal. The device comprises a heating area, a discharging buffering area and a cooling area which are sequentially arranged, wherein the heating area comprises a heating furnace; the cooling area comprises a cooling device; the discharging buffering area comprises a discharging buffering device, and the discharging buffering device comprisesa protecting cover, and a guide mechanism which is arranged in the protecting cover; a buffering area feeding port and a buffering area discharging port are formed in the outer side of the protectingcover; the buffering area feeding port communicates with a discharging port of the heating furnace; the buffering area discharging port communicates with a feeding port of the cooling device; one endof the guide mechanism is connected to the buffering area feeding port, and the other end of the guide mechanism is connected to the buffering area discharging port. The thermal treatment device forthe metal is compact and ingenious in structure, high in reliability, and high in automation degree; the discharging buffering device is additionally arranged, so that outside cold air can be effectively prevented from directly entering the heating area, and as a result, the heat loss is decreased; the heat transfer between the heating area and the cooling area is avoided; the heating efficiency and the thermal treatment quality are improved; and moreover, the workpiece damage is reduced; and the product quality is improved.

The invention discloses a device and method for detecting the depth of foundation pit dewatering. The detecting device is composed of a hole-forming pipe, a detecting pipe and a ruler rod. The top of the hole-forming pipe is sleeved with a smashing-preventing plate embedded with a gradienter, water leaking holes are distributed in the side wall of the hole-forming pipe, and the bottom end of the hole-forming pipe is a closed end and is provided with a solid conical head. The detecting pipe is arranged inside the hole-forming pipe, the bottom end of the detecting pipe is closed, small water inlet holes are distributed in the side wall of the detecting pipe, and the detecting pipe is wrapped by a sand separating net. The ruler rod is arranged inside the detecting pipe and is made of light materials, the upper portion of the ruler rod is provided with a scale ruler, and the bottom end of the ruler rod is provided with a light hollow ball. The top portion of the ruler rod is sleeved with a vertical cover. When the device is used for detecting the water level, water leaks into the hole-forming pipe, is deposited in a sand depositing area and filtered through the sand separating net and then enters the detecting pipe, the ruler rod inside the detecting pipe rises under the action of buoyancy, the water level height on the scale ruler of the ruler rod is read, and then water level detecting is finished. The device is low in cost, simple in structure, convenient to operate, free of the effect of sediment during detecting, accurate and reliable in detecting result and wide in application range.

The invention relates to a protector of an underground oil extraction machine, which comprises an outer pipe, a connecting rod and adapters arranged at both ends of the outer pipe, wherein a decontamination unit, a filter unit and a sealing unit are arranged between the outer pipe and the connecting rod; the filter unit comprises a framework, a filter layer of a flexible structure is arranged in the framework, the inner diameter of the filter layer is slightly smaller than the pore diameter of both ends of the framework and is in interference fit with a connecting shaft, and one end of the filter layer is also provided with a flexibility compensation mechanism. By arranging the decontamination unit, the filter unit and the sealing unit between the outer pipe and the connecting rod, the invention realizes the scraping of dust on the connecting shaft and ensures the favorable fit between the shaft and holes after abrasion; by using the filter layer of a flexible structure, the invention effectively filter off silts or other metal particles in crude oil; and by using the dynamic/static seal structure design, the invention further avoids the inflow of the silts and other harmful substances in the crude oil and ensures the working quality and efficiency of the equipment.

This invention involving a loudspeaker equiped with a discharge opening which makes the sound output to the horizontal direction.In the internal of the loudspeaker yoke,the magnets and metal plates stack in due course,there are membrana vibrans of sound on the binding card buckle of frame which forms with the yoke one body,in order to output the sound exhaled by the vibration of the membrana vibrans to the horizontal direction,making the cover of discharge opening combine with the binding card buckle of the frame.In the process of manufacturing mobile telephone,PDA and various electrinic product,this loundspeaker has not only the effect of changing the discharge opening position or the structure in various forms and also has the effect of changing the loundspeaker structure with various forms.

The invention discloses a structure for controlling seepage in roof skylight construction and a construction method. Firstly, within 10-20 cm around a roof skylight, thermal insulation layers, water-proofing layers and surface protecting layers of a roof board are chiselled away till base layers are exposed; the base layers are roughened; the base layers are cleanedand brushed with cement-based permeable crystals; steel bars are implanted in the roof board at the sectionposition where the chiselling is conducted, and distribution steel bars are arranged; then, early-strength impermeable concretewhich is used by manually throwing is adopted to fill the roof board, the filling thickness is 10-12 cm, a slope is adopted to cover the top of the concrete, a post-pouring belt of which the width is no less than 10 cm is reserved at the position where new materials and old materials of the roof board are combined; water-swelling rubber water-proof strips are stuck onthe surfaces corresponding to the upper and lower sides, avoiding the steel bars, of the post-pouring belt; after the final setting of the concrete, bridging particles are used to fill the post-pouring belt; finally, capping material are adopted to conduct capping. The structure and the method have the advantages of being reasonable in design, low in cost, convenient to construct and operate, long in service life and high in construction safety, having structural reinforcement, saving resources and reducing seepage risks, and effectively solve the seepage problem in current roof skylights.

The invention discloses a power regulator with constant voltage output, which comprises: a voltage stabilizing circuit module for receiving an input voltage, stabilizing the input voltage within a preset voltage range, and outputting a stabilizing voltage within the preset voltage range; a voltage buffer module coupled with the voltage stabilizing circuit for buffering the input stabilizing voltage and outputting the stabilizing voltage into the next grade circuit, wherein, the voltage buffer module stops the current of next grade circuit from flowing into the voltage stabilizing circuit module. By utilizing the voltage buffer module, the invention isolates the voltage stabilizing circuit module from load, avoids the load effect from influencing the output voltage of the voltage stabilizing circuit module; in addition, the voltage buffer module further stops current of the load from flowing into the voltage stabilizing circuit module, so as to further improve the output precision of the power regulator.

The invention provides an anti-blocking structure, a base and an air conditioner, and belongs to the technical field of air conditioners. The anti-blocking structure comprises a drainage port suitablefor draining water, and one or more water discharging channels suitable for guiding the water to the drainage port; the water discharging channels are provided with diameter limiting openings; the size of objects allowed to pass through the diameter limiting openings is smaller than the size of objects allowed to pass through any other parts on the water discharging channels; and the maximum sizeof the objects allowed to pass through the diameter limiting openings is smaller than the diameter of the drainage port. According to the anti-blocking structure, by limiting the size of the diameterlimiting openings and the diameter of the drainage port, the size of the diameter limiting openings is smaller than the diameter of the drainage port, and thus dirt larger than the diameter of the drainage port is blocked from flowing into the drainage port and then causing blocking.

The invention provides a novel anti-seepage coal mine shaft and a preparation method thereof. The shaft comprises an outer cylinder wall and an inner cylinder wall, wherein a gap is arranged between the outer cylinder wall and the inner cylinder wall and is filled with a water isolating material; a plurality of transverse construction planting seams are arranged in the depth direction of the outer cylinder wall in a spaced manner and water-stopping copper sheets are separately arranged on the plurality of construction planting seams; and the shaft successively passes through a frozen surface soil section, a frozen bed rock section and a unfrozen section from top to bottom. The construction planting seams obtained by wall construction by means of a step-like wall injection molding mold are step-like too. The construction planting seams can prolong a permeating channel and improve the anti-seepage property. The arc-shaped water-stopping copper sheets which are arranged on the construction planting seams are good in water-stopping effect and can effectively prevent water in a soil layer from flowing into the shaft. The problem of seepage water of the shaft is effectively solved by various blocking manners. The coal mine shaft provided by the invention is simple in structure and good in anti-seepage effect, and the anti-seepage operating method is concise and easy to operate.

The invention relates to the technical field of sewage treatment, and discloses a riverway sewage treatment device and a treatment method thereof. The riverway sewage treatment device is provided withan interception area, a sewage treatment area and a discharge area. Garbage floating in the sewage is blocked through the interception area, and meanwhile, the sewage and the garbage flowing out of the sewage draining exit of the river channel can be prevented from directly flowing into the river; microorganisms are adopted in the sewage treatment area to carry out ecological restoration on a polluted water body to form a benign water environment, so that the ecological balance of the water body is achieved, pollutants in the water body are biologically decomposed and purified, the surrounding ecological environment is not damaged, and the forward balance of the water body is improved; and the water flow with the water quality reaching the standard is controlled to be discharged into theriver through an automatic valve of the discharge area.

The invention discloses an application of GSPE (grape seed proanthocyanidin extract) in preparation of a targeted drug for treating cell calcium overload injury. The cell calcium overload injury means vascular endothelial cell calcium overload injury resulting in pyemia, the GSPE does not influence classic signal channels TLR4 and NFkB of LPS (lipopolysaccharide), Orail signals are specifically blocked, and calcium overload signals are blocked. The application indicates that the GSPE can effectively block activation of Orail mediated SOCE (store-operated calcium entry) by LPS, blocks extracellular calcium ion inflow initiated by the Orail mediated SOCE, reverses lung microvascular endothelial cell calcium overload injury of mice with pyemia and reduces the death rate of the mice with pyemia.

The invention discloses a kiln device for producing glass, basalt fiber or rock wool. The kiln device comprises a kiln body, the kiln body is provided with a feed port, a flue gas discharge port and amolten liquid discharge port, the top of the kiln body is provided with a stock bin, and the outlet of the stock bin is communicated with the feed port; and a pre-melting tank and a homogenizing tankare arranged in the kiln body, the pre-melting tank right faces the feed port, the pre-melting tank is connected with the homogenizing tank through a boss, a first combustion spray gun is arranged above the pre-melting tank, and a second combustion spray gun is arranged above the homogenizing tank. Blocky raw materials are preheated and melted in the pre-melting tank, get over the boss, then flowinto the homogenizing tank, and are discharged out of the kiln from the molten liquid discharge port, and high-temperature flue gas generated by combustion flows through a raw material pile and is discharged through the flue gas discharge port. The device adopts the blocky raw materials as production raw materials, the blocky raw materials are directly fed into the kiln through the stock bin, andthe high-temperature flue gas in the kiln is fully utilized for preheating the blocky raw materials, so the energy consumption is low, and the waste gas emission is small.

The invention provides a shielded voltage-sharing circuit. The circuit includes a main circuit and an auxiliary circuit parallel to the main circuit; the main circuit includes a thyristor level equivalent circuit and a metal terminal to ground capacitance and saturation reactor equivalent circuits; and the auxiliary circuit includes M pi-type circuits which are in successive series. According to the technical schemes, shielding potential fixed point can be isolated from electric of the main circuit, the first end and the tail end of a converter valve and a shielding case are only in electricalconnection, and therefore, discharging effects in the converter valve on ground stray capacitance can be shielded, and voltage equalization distribution of wide frequency domain scaled series thyristors can be realized; and under the impact of steep waves, the unevenness of thyristor voltage is less than 1%, the largest voltage steepness can be reduced to 6.8 kV/[mu]s, no distortion of voltage ofkey components of the converter valve under wide frequency domain can be realized, the reliability and insulation tolerance of components can be enhanced, and the circuit has high engineering application values.

The present invention relates to a soil guard structure and an establishment method thereof. The soil guard structure in which H-beams are vertically mounted in the ground and a plurality of panels are inserted between the H-beams to stabilize the ground and prevent inflow of groundwater, wherein the panel is a rigid metal panel and the H-beam is provided with a guide rail in a longitudinal direction so as to allow the insertion of the rigid metal panel.

The invention discloses large-particle-size cement stabilized macadam and a method thereof. The large-particle-size cement stabilized macadam comprises the following components in parts by weight: 25-35 parts of first broken stone; 20-30 parts of second broken stone; 15-25 parts of third broken stone; 20-30 parts of stone chips; 1-8 parts of cement; and 1-8 parts of water, wherein the particle size of the first broken stone is 19-37.5 mm, the particle size of the second broken stone is 9.6-19 mm, and the particle size of the third broken stone is 4.75-9.5 mm; the method comprises the following steps: S1, preparing raw materials of broken stone, stone chips, cement and water; s2, mixing a mixture; before the mixture is formally blended, blending equipment is debugged, and trial blending is carried out, so that the particle composition and the water content of the mixture meet the specified requirements; the water content of the aggregate is checked before mixing every day, the construction mix proportion of the day is calculated, all the materials prepared in the step S1 are classified according to the mix proportion and put into all stock bins, and the blending proportion of all the materials is controlled through the stock bins; coarse aggregate, fine aggregate, cement and water in each bin are mixed in th mixing bin according to a ratio; s3, performing vibration forming of the vibration mixing cylinder, and finally discharging through a conveying belt; the invention provides the cement stabilized macadam which is low in cost, high in strength, anti-cracking and anti-freezing and the method thereof.