38results about How to "Small cavity volume" patented technology

A key element of an existing pneumatic muscle tendon is a knitted rubber hose made of non-rigid materials, and linear motion output and automatic resetting can only be achieved by externally arranging a linear motion guiding and returning device, accordingly, not only is the structure of an overall device not very compact, but also the comprehensive manufacturing cost is high. Besides, energy consumption of the existing pneumatic muscle tendon is as high as 4 times or more of that of a corresponding cylinder under the conditions of identical inner diameters, strokes and rated pressure. According to an energy-saving pneumatic muscle tendon, an internal linear motion guiding device is adopted, a compression spring is used for forming elastic potential energy to constitute an automatic resetting device, and an internal air capacitor is used for forming a pressure potential energy automatic resetting device; two types of energy-saving pneumatic muscle tendons capable of outputting liner motion and resetting automatically are designed. The novel pneumatic muscle tendon is energy-saving and environment-friendly, compact in overall structure, low in comprehensive manufacturing cost, complete in function and wide in application range.

The invention provides a vacuum packaging method for resistance welding of cladding tubes. The sample is placed in a metal cladding tube with one end closed; the inside of the metal cladding tube is evacuated to a set vacuum through the open end of the metal cladding tube. After the temperature is reached; the metal sheathed tube is placed between the two electrodes, and a current is passed through the two electrodes. After the area between the two electrodes is heated to the set temperature, the heated area is pressurized by hydraulic flat-nose pliers, so that the heated area is sealed. The welded joints are used to seal the specimen in the metal-clad tube. The invention has good vacuum effect, high production efficiency, high sealing and welding efficiency and success rate, simple structure and low production cost.

The invention relates to a drying device, in particular to a jean drying roller. The jean drying roller comprises a roller body and bearing seats, wherein the roller body comprises an inner cylinder and an outer cylinder, the inner cylinder and the outer cylinder are both round pipes and are arranged coaxially, heat conduction ribs are arranged between the inner cylinder and the outer cylinder, the two ends of the inner cylinder are located on the outer side of the outer cylinder, and the bearing seats are arranged at the two ends of the inner cylinder. The jean drying roller provided by the invention has the advantages of small internal cavity size, simple structure, low cost, low energy consumption and low heat loss.

The invention discloses a winnowing device of a harvester. The winnowing device of the harvester comprises a scraper conveyor, a feeding tube and an exhaust tube, wherein an outlet of the scraper conveyor is connected with the feeding tube through a transitional tube; a throwing wheel is arranged in the transitional tube; a guiding roller and a support are arranged in the feeding tube; the support is in running fit with the upper end and the lower end of the guiding roller; the guiding roller is provided with a conical guiding surface; and the discharging direction of the transitional tube is tangent to the guiding surface. When the winnowing device of the harvester works, materials are thrown in the feeding tube at high speed along the tangential direction of the conical guiding surface through the throwing wheel, and move along annular space between the guiding roller and the feeding tube, so that the materials are scattered uniformly, and the separation rate of impurities and grains is improved; and moreover, the volume of a cavity of the feeding tube is reduced by the guiding roller, a structure which is similar to a laval spray tube is formed, and air flow is accelerated in the feeding tube, so that the efficiency on separation of the impurities and the grains is further improved. The winnowing device of the harvester is high in impurity removal rate and high in winnowing effect.

The invention relates to powder processing equipment, in particular to a high-speed ultrafine powder ball mill. A barrel body of the ball mill is designed as a disk-shaped cylinder, wherein the inner wall of the barrel body is provided with a round screen; grinding steel balls are arranged between a grinding impeller and the screen; the circumferential wall of the barrel body has a jacket; the round jacket has a cooling water inlet and a cooling water outlet; and the grinding impeller rotates at a high speed to drive the grinding steel balls to roll on the wall of the screen of the barrel body, thereby grinding the powder.

The invention belongs to the field of textile product processing and particularly relates to a processing method of terylene irregular drafting silk fabric. According to the specific technical scheme,the processing method of the terylene irregular drafting silk fabric comprises the steps of performing desizing, pre-shrinking, alkali decrement and finishing agent modified treatment on terylene silk fabric, wherein the finishing agent modified treatment method comprises the steps of immersing the silk fabric into a finishing agent to soak for 5 to 10 minutes, performing ultrasonic oscillation and then drying at the drying temperature of 110 to 115 DEG C; based on the total amount of 100 parts, the formula of the finishing agent comprises the following components in parts by weight: 5 to 10parts of chitosan oligosaccharide, 5 to 10 parts of silk fibroin, 30 to 100 parts of polyethylene glycol-8000, 3 to 5 parts of citric acid, 2 to 3 parts of disodium hydrogen phosphate and the balanceof deionized water; and the molecular weight of the chitosan oligosaccharide is less than 2000. The terylene treated by the method has high air permeability, high hygroscopicity and comfortable touchfeeling, has smooth feeling of natural silk fabric, is softer when being worn for more times, and has certain antibacterial ability.

The invention discloses a plunger type fracturing pump and an oil fracturing vehicle. The fracturing pump includes a pump head body and a reciprocating plunger body, the plunger body includes: a first plunger, the end of the first plunger is arranged in the pump head body, the The first plunger includes a first inner hole in the axial direction; a second plunger, the second plunger is arranged in the first inner hole of the first plunger; a mounting part, the installation part is arranged in the Between the first plunger and the second plunger, it is used to fasten or disengage the first plunger and the second plunger. The present invention can provide delivery of different pressures and displacements without replacing the plunger and the pump head body, has high pumping efficiency, simple structure, convenient assembly and disassembly, and low cost.

The invention discloses a laser-induced breakdown spectrum signal enhancement method. When laser-induced breakdown of a spectrum signal is performed, microplasma is used as an auxiliary excitation source, which acts on the surface of a sample to be tested with the laser at the same time, so as to realize LIBS signal enhancement; the laser-induced breakdown spectrum signal enhancement method is a method of using the microplasma as a new excitation source to achieve signal enhancement; the microplasma has the advantages of small size, high compactness, easy manufacturing, low gas flow rate, lowpower, low temperature portability and the like, and the spectrum signal enhancement of more than 10 times can be realized without adding an additional device. The method plays the signal enhancementrole on main elements, and obvious spectrum signals can be obtained from low-content elements that are difficult to be detected in the sample via the method.

The invention relates to an aluminum antimonide polycrystalline material synthesizing process device and a synthesis method. High-purity antimony and high-purity aluminum are put into a silicon nitride ceramic crucible, a graphite gasket is covered and nested in a quartz crucible, an air gap exists between the graphite gasket and the upper surface of the silicon nitride ceramic crucible, and highvacuum in the silicon nitride ceramic crucible is not influenced during vacuumizing; after vacuumizing, a quartz plug and the quartz crucible are welded, and finally the quartz plug and the quartz crucible are synthesized in an inclinable rotating tubular furnace in a rotating mode, so that synthesis of single-phase aluminum antimonide in a small-cavity crucible without additional compensation isachieved, and elements are not lost in the synthesis process. According to the process device, the silicon nitride ceramic crucible does not react with an aluminum antimonide melt at high temperature,antimony evaporation is inhibited, the effect of cracking of the reaction that the outer quartz crucible adsorbs the aluminum element is prevented, it is guaranteed that melt components are not lostin the synthesis process, and the graphite gasket has the effect of adsorbing residual oxygen at high temperature. The synthesized aluminum antimonide polycrystalline material has the characteristic of uniform single-phase components.

The present invention relates to a disinfection chamber for use in a disinfection device for health care goods, such as bed pans, urine bottles and the like, the chamber in use being intended to receive the goods which are to be disinfected. The chamber has a self-supporting structure which is substantially made of a polymer material. The invention further relates to a disinfection device, for disinfection of health care goods, such as bed pans, urine bottles and the like, said device comprising a disinfection chamber, in which said goods are intended to be placed during a disinfection process, the chamber being of the above-described kind.

The invention discloses an online fault diagnosis method and a device for a secondary suspension air spring system. The method comprises the following steps: 1) when the air spring is subjected to a load force, deformation parameters of the air spring are acquired and according to the deformation parameters, a pressure-stiffness model for the air spring is built, wherein the deformation parameters comprise a spring height, an effective bearing area and an inner cavity volume; 2) multiple pressure values of the inner pressure of the air spring are acquired, and the multiple pressure values are inputted to the pressure-stiffness model for acquiring a stiffness decay curve of the air spring; 3) according to the stiffness decay curve, a stiffness threshold of the air spring is set; and 4) second stiffness of the air spring is acquired online, the second stiffness and the stiffness threshold are compared, and if the second stiffness is larger than the stiffness threshold, fault happens to the air spring. Defects that fault judgment is carried out on the air spring on the basis of the traditional visual inspection and experience judgment, and thus accuracy is low can be overcome.

The invention discloses a preparation method for a composite sound-absorbing material of an automotive interior trim part, and relates to the technical field of processing of automotive interior trimparts. According to the invention, a soundproofing mat is composed of two layers of soundproofing cotton felts; and the preparation method comprises the following steps: regenerated polyester fiber / polypropylene fiber spinning, hot press molding of a composite felt, premolding of a glass fiber mesh with a steam mold, cooling and molding, water cutting, and packaging and warehousing. The compositesound-absorbing material provided by the invention is prepared by compounding a plurality of layers of a sound-absorbing material, comprises six layers, and has good sound-absorbing effect and compactness and excellent aesthetic properties. The preparation method provided by the invention uses the regenerated polyester fiber and frequently-used polypropylene fiber as raw materials; a fiber composite sheet material applied to automotive interior trim parts is prepared by adopting a method provided by the invention; the regenerated polyester short fiber is a reinforcing body, and the polypropylene fiber is a matrix, so the effects of binding and reinforcing are exerted; and the composite felt prepared by strictly controlling parameters like temperature, time and pressure of a hot press molding machine has excellent mechanical properties.

The invention discloses a metal hard sealing spherical valve, and belongs to the technical field of switching valves for conveying systems. The metal hard sealing spherical valve comprises a guiding track and a spherical valve element, wherein the guiding track is arranged in a valve cavity; the two ends of the guiding track communicate with an inlet flow channel and an outlet flow channel correspondingly; the guiding track comprises a valve seat and a guiding assembly; the valve seat is arranged on one side of the guiding assembly; the middle of a valve element base is arranged in the guidingassembly in the mode that the middle of the valve element base can rotate around the axis of a valve rod component; a valve element flow channel is formed in the middle of the valve element base; a guiding sleeve is arranged on one side of the middle of the valve element base; one side of the spherical valve element is rotationally arranged on the guiding sleeve in the axial direction of the guiding sleeve in a sleeving mode; the guiding sleeve is internally provided with an elastic support component; the edge of one side of the spherical valve element is attached to the guiding assembly; theedge of the other side of the spherical valve element is attached to the valve seat; and the edge of the spherical valve element is of a sharp-knife structure. The metal hard sealing spherical valveprovided by the invention is better in sealing effect, the size of the valve cavity is reduced, the weight is low, and the cost is low.

The invention discloses a method for preparing a carbon nano hollow polyhedron by using a hydrothermal method and belongs to the field of nano graphite preparation. According to the method, a chemicalsynthesis method is utilized, pyrene with a benzene ring structure is taken as a raw material, a reaction is carried out under an alkaline condition and at a relatively low temperature, and a prepared reaction product is high in graphitization degree, the cavity volume is large, and the reaction product has potential characteristics of light weight and high strength. The method is low in energy consumption, short in consumed time and high in product quality, the adopted chemical synthesis method is completely different from the prior art, and innovation and novelty are achieved.

The invention discloses a PET / PP composite sound-absorbing material preparation method, and relates to the technical field of vehicle interior decoration member processing, wherein the sound insulation pad comprises two layers of sound insulation cotton felts, and the preparation method comprises: melt spinning of a PET / PP mixture, steam mold pre-molding, cooling setting, water cutting and packaging warehousing. According to the present invention, the PET / PP composite sound-absorbing material is formed by compounding the multiple layer sound absorbing materials, comprises six layers, has characteristics of good sound absorbing effect, good fitting degree and good aesthetics; and in the preparation method, the high temperature steam is introduced into the interior of the sound absorbing material by using the steam mold and the steam engine so as to completely absorb water, the PET / PP composite mesh surface can fully expand and coil so as to fill the entire molding cavity, and the shaping with the cold mold is performed, such that the sound insulation pad prepared from the sound absorbing material can be attached to the vehicle front enclose member, the volume of the cavity is small,and the sound transmission medium (air) is reduced; and through the tight attachment of the sound insulation pad, the vibration of the attached surface is reduced, and the noise is reduced.

A steady-flow control air pressure balancer relates to the technical field of wind power transmission. It includes an air inlet pipe, an air outlet pipe and a valve body. The valve body is provided with a valve cavity, and both ends of the valve cavity are respectively connected with an air inlet pipe and an air outlet pipe. The rear section of the valve cavity is the first conical diversion section, the front section of the valve cavity is the second conical diversion section, the cylindrical middle section between the first conical diversion section and the second conical diversion section, the valve cavity There is a fluid guide assembly and a fluid guide bracket in the middle; the fluid guide assembly includes a guide body and a cylindrical casing, and an electric cylinder for driving the guide body to move forward and backward is fixedly installed in the cylindrical casing. The width of the gap between the cavity walls of the second conical diversion section can adjust the working wind pressure of the corresponding winding unit; the diversion support includes a strut, the cylindrical shell and the valve body are fixedly connected to the strut, and the strut An air intake channel communicated with the external environment and an exhaust hole communicated with the inner cavity of the cylindrical shell are opened inside.

The invention discloses a stamp forging mould of long and thin forging with upsetting rate more than 3, which comprises an upper die and a lower die, wherein a punch of the upper die is just opposite to a die orifice of the lower die, and is characterized in that the outer circle of the punch is provided with a movable protection jacket, an inner hole of the protection jacket is in slide fit with the outer circle of the punch, the protection jacket is connected with the upper die through an elastic device, and the lower end surface of the protection jacket can be smoothly and closely attached to the plane on which the die orifice of the lower die is arranged when the lower end surface is contacted with the plane. The stamp forging mould adopts a near-net-shape technology; the produced forge piece is basically free from generating rough selvedge, and the utilization rate of the material can reach 99.5 percent, so not only the raw material can be saved, but also the forge piece can be obtained directly through the cold deformation, and the energy can be saved. The technical scheme breaks through the restriction of the one-time forge formation that the upsetting ratio cannot be more than 3. The service life of the mould is long.

The invention discloses a drilling device for releasing the fission gas of heavy water reactor fuel elements, which comprises a frame, on which a sealing seat A (4) is arranged, and a sealing seat A (4) is arranged inside the sealing seat A (4) for installing heavy water reactor fuel elements ( 3) Hole A, seal seat A (4) is connected with gas collection seat (5), pipe fittings (6), seal seat B (7) and electric drill (8) in sequence, and the motor shaft connecting shaft (2) of electric drill (8) ), the shaft (2) is rotatably installed in the shaft hole of the seal seat B (7), the drill bit (1) is fixedly installed on the lower end of the shaft (2), and the drive of the electric drill (8) is fixedly installed on the frame device (9). The beneficial effect of the invention is that the fuel element of the heavy water reactor can be drilled in a highly radioactive environment, and the fission gas can be completely released.