34results about How to "Easy to observe usage" patented technology

The invention discloses a roller belt conveyor. The roller belt conveyor comprises a middle frame, supporting legs, a transmission drum, a transmission drum driving device, a conveyor belt, a ball screw transmission device, an upper roller assembly, a return roller assembly and a turnabout drum. The conveyor belt is wound around the transmission drum, the upper roller assembly, the turnabout drum and the return roller assembly sequentially and then is sewn end to end. The upper roller assembly comprises a horizontal roller and an adjustable roller groove angle device, wherein the horizontal roller is provided with a roller bearing explosion prevention device; the adjustable roller groove angle device is installed adjacent to the horizontal roller and adjusts the wrap angle of the conveyor belt through the ball screw transmission device. The conveyor achieves adjustable conversion of conveying of bagged materials and bulk materials; in addition, when conveying the bulk materials, as the conveyor belt is folded towards the middle, the materials will not be scattered, and the burden of working staff is relieved. The usage conditions of roller bearings can be conveniently observed, observation, maintenance and replacement are facilitated, and safety performance is greatly improved.

The invention discloses an experiment system and an experiment method for tangential filtration of a high pressure resistant flat reverse osmosis (RO) membrane. The experiment system comprises a material feeding pot, a pressure pump, a flat RO membrane filtration device, a storage pot, a pressure gauge, an adjustment valve and a safety valve. The experiment method comprises the following steps of: (1) arranging an RO membrane between a top plate and a base plate, and fastening the top plate and the base plate together through bolts; (2) connecting equipment; (3) keeping the safety valve closed and the adjustment valve opened, and starting the high-pressure pump; (4) gradually turning down the opening degree of the adjustment valve, so that the liquid feeding pressure of the flat RO membrane filtration device is raised until material liquid flowing through the membrane flows out; and (5) finishing collecting the filtered material liquid, stopping the pump, and opening the adjustment valve and the safety valve to release pressure. The experiment system is feasible in a laboratory and can bear high pressure required by tangential filtration of the flat RO membrane so as to finish an RO filtration experiment; and according to the experiment method, the pollution situation of the membrane in each filtration stage can be observed conveniently, and researches on a pollution control technology is facilitated.

The invention provides a stirring machine capable of efficiently completing concrete stirring. The machine capable of efficiently completing concrete stirring comprises a base frame, a material storing mechanism, a preliminary mixing auxiliary mechanism and a stirring mechanism; the material storing mechanism comprises a material storing cylinder, a positioning pillar, a plurality of partition plates and an insulation plate, the material storing cylinder is installed on the base frame, the positioning pillar is located in the material storing cylinder and coaxially arranged with the material storing cylinder, the partition plates are located in the material storing cylinder and connected with the positioning pillar and the material storing cylinder, and the insulation plate is detachably installed on the lower portion of the material storing cylinder; the preliminary mixing auxiliary mechanism comprises a material guiding frame, a material gathering frame and a material splitting block, a material guiding through hole is formed in the material guiding frame, and a material gather through hole is formed in the material gathering frame; and the stirring mechanism comprises a first gear, an arc-shaped plate, an installing fame, a stirring barrel and a second gear, and a transmission ring is installed on the stirring barrel. The stirring machine capable of efficiently completing concrete stirring is convenient to use, stirring efficiency of concrete is effectively improved, and the using quantities of various materials are convenient to observe.

The invention discloses an oxygen adding device in a hospital ward. The oxygen adding device in the hospital ward comprises an oxygen generator wrapped by a machine case shell which is internally provided with an air purifying device; the air purifying device is composed of a composite filter screen driven by a motor and arranged in the air flowing direction, a crystal activated carbon filter, a nano-photocatalyst decomposition net and an anion generator; and the air purifying device and the oxygen generator are both operated through a control device. By means of the technical scheme, the oxygen adding device is arranged in the ward, meanwhile, air of the ward closed for a long time can also be purified, and the limited space of the ward is fully utilized; and the device is also suitable for a patient lying in bed for a long time at home.

The invention provides an air compressor sound insulation protective device. The air compressor sound insulation protective device comprises an upper frame, a lower frame located under the upper frame, four supporting rods, a first sound insulation unit, three second sound insulation units and a third sound insulation unit. The upper frame and the lower frame each comprise four steel channels arranged in a rectangle shape. The upper frame and the lower frame form a stereoscopic skeleton through the supporting rods. The top of the upper frame is covered with the first sound insulation unit. Thesecond sound insulation units are arranged on the three side faces of the upper frame. The third sound insulation unit is arranged on the other side face of the upper frame. The first sound insulation unit and the second sound insulation units each comprise a high-temperature-resistant layer, a sound absorption layer, a sound insulation layer and an outer protective layer which are fixedly connected from inside to outside in sequence. The third sound insulation unit comprises two pieces of refractory glass which are arranged in a staggered mode. The two pieces of refractory glass are slidablyfixed to the interiors of grooves. Each piece of refractory glass comprises an inner glass layer and an outer glass layer, and a vacuum layer is arranged between the inner glass layer and the outer glass layer. By adopting the air compressor sound insulation protective device, the purpose of reducing noise of an air compressor is achieved.

The invention discloses a fat edge detection device for a rail. The fat edge detection device comprises a rail rolling disc, clamp plates and marker boxes. The rail rolling disc can roll along a rail surface, the width of the rail rolling disc is equal to that of the rail surface without fat edges, and a connecting rod is arranged on the upper end face of the rail rolling disc. The clamp plates are used for clamping two side edges of the rail rolling disc and two side edges of the rail, are connected with the connecting rod through springs and can be expanded through the springs when clamping the rail with fat edges. The marker boxes are arranged on the upper end face of the rail rolling disc and used for storing marking substances, an opening of each marker box faces downwards, and orientations of the openings correspond to clamping seams of the clamp plates and the two side edges of the rail rolling disc. Each opening is sealed through a seal plate which is connected with the corresponding clamp plate, and the seal plates can be removed to no longer completely seal the openings when the clamp plates are expanded. The fat edges are marked to facilitate grinding while the rail surface is subjected to fat edge detection, and detection results are visual and accurate.

The invention provides a two-section independent temperature-control biological 3D printing spray nozzle. The two-section independent temperature-control biological 3D printing spray nozzle comprisesa main shell, a material barrel, a spraying nozzle extruding device and a spraying nozzle needle, a first temperature-control device is arranged in the main shell, the material barrel is inserted intothe first temperature-control device, and the bottom end of the material barrel is connected with the spraying nozzle extruding device through a feeding pipe. A discharging pipe is arranged at the bottom end of the spraying nozzle extruding device, the spraying nozzle needle is connected with the discharging pipe and penetrates out to the outer side of the bottom of the main shell, a second temperature-control device is arranged between the tail end of the spraying nozzle needle and the top end of the discharging pipe, and a heat isolating device for preventing mutual interference of the temperatures is arranged between the first temperature-control device and the second temperature-control device. According to the two-section independent temperature-control biological 3D printing spray nozzle, independent temperature control over the spraying nozzle material barrel section and the spraying nozzle needle section is achieved, gradient temperature control of the spraying nozzle can be achieved, all gradient values are mutually independent, and temperature control is not affected by one another.

The invention discloses a rail fat edge detection device, which comprises a rail roller and a splint. The rail roller can roll along the rail surface, and the width of the rail roller is the same as the width of the rail surface without the fat edge. Consistently, the upper end surface of the rail roller is provided with a connecting rod; the splint is used to clamp the two sides of the rail roller and the two sides of the rail, the splint is connected to the connecting rod through a spring, and the splint passes through The spring can be stretched when clamping the fat edge rail; it also includes a marker box arranged on the upper end surface of the rail roller for storing marking media, the opening of the marker box is set downwards, and the opening faces the splint Corresponding to the clamping seams on both sides of the rail roller; the opening is sealed by a sealing plate connected to the splint, which can be removed when the splint is stretched and no longer fully sealed Keep your mouth shut. It can detect the fat edge of the rail surface and mark the fat edge for grinding, and the detection result is intuitive and accurate.

The invention provides a surgical suture fixing device for operating room nursing. The device comprises a suture storage box, a radiation lamp, a placement shaft, a box cover and a pressing rod. A liquid storage box is installed at the lower end of the suture storage box. A connecting cotton rope is installed in the liquid storage box. The radiation lamp is installed at the lower end in the suturestorage box. A suture shaft is installed on the inner side of the radiation lamp. The installed liquid storage box can store some medical alcohol solutions, so that the humidity of a surgical suturecan be conveniently maintained, and the surgical suture can be disinfected at any time. The liquid storage box can convey a solution into a placement groove through the connecting cotton rope. Due tothe fact that an alcohol solution is easy to volatilize, the surgical suture on the outer side can be disinfected. The connecting cotton rope in a sponge-shaped structure can facilitate transferring of the alcohol solution. The surgical suture on a wrapping post can penetrate through a line rail through the arranged line rail in a funnel-shaped structure, and therefore the surgical suture can be prevented from being wound in a pulling process.

The invention discloses an unmanned ship charging device. The device comprises a charging mechanism and an unmanned ship body, wherein a side surface of the charging mechanism is provided with a conjunction groove matched with the unmanned ship body, and the groove bottom of the conjunction groove is fixedly provided with an automatic telescopic pile, and the automatic telescopic pile is controlled by a built-in electric telescopic rod; the other end of the automatic telescopic pile is fixedly connected with a charging pile, a storage battery mechanism is detachably installed on the side, close to the charging mechanism, of the unmanned ship body, and a charging plug matched with the charging pile is arranged on the other side of the storage battery mechanism. According to the unmanned ship charging device, the side rail bar slides in the rail groove and cuts the induction line of the induction coil, so the automatic telescopic rod can be powered on, the automatic telescopic rod is started and extends to drive the charging pile to stretch out, and therefore the charging plug and the charging pile can be in butt joint conveniently, charging is more automatic, and in a charging state, the flashing lamp is turned on and flashes, charging is more striking, and the use condition of the charging mechanism in the area can be observed conveniently.

The invention discloses a warping creel of an automatic weaving machine for weaving and molding a carbon fiber three-dimensional fabric. The warping creel comprises a creel body, an acrylic plate, yarn guiding hooks, weft yarn detectors, an auxiliary agent groove, a tension force adjuster, a reflow groove and porcelain rings, wherein triaxial carbon fiber yarn cylinders are fixed side by side on the yarn retreating seats on the bottom end of the warping creel, yarn is inserted into the yarn guiding hook and the weft yarn detector, passes through the auxiliary agent groove, the tension force adjuster and the porcelain ring, is transported to the weft feeding device of an automatic weaving machine, the weft yarn detector detects wherein the yarn moves and is broken so as to ensure the normalworking of the weaving machine, the auxiliary agent groove provides necessary auxiliary agents for the yarn during the weaving, and the auxiliary agent reflux groove recovers the excess auxiliary agent to the auxiliary agent groove, such that the auxiliary agent can be recycled so as to save the auxiliary agent. According to the present invention, the warping creel has advantages of compact structure and novel and reasonable design, can assist the carbon fiber three-dimensional fabric automatic weaving machine to complete the automated production of the three-dimensional fabric, can real-timely detect the yarn unwinding, can improve the production efficiency and the consistency of the product, and further has advantages of strong practicability, use effect and easy promotion.

The invention relates to a kitchen water softener. The kitchen water softener comprises a shell, a water inlet, an interface pipeline, a softened water outlet and a washing water outlet, wherein a transparent organic glass layer is arranged on the upper part of the shell; a filter element and a salt core are sequentially arranged in the organic glass layer from top to bottom; an ion exchange resin core is arranged below the salt core; the filter element and the salt core are in tight communication with a two-branch control mechanism through the interface pipeline and are respectively in tight communication with the ion exchange resin core through the interface pipeline, the two-branch control mechanism and a three-branch control mechanism; the salt core is in tight communication with the ion exchange resin core through the interface pipeline and a control valve; one end of the filter element is in tight communication with the water inlet through the interface pipeline. The kitchen water softener is reasonable in structure and can be used for regenerating ion exchange resin, and meanwhile, yielding water contains natural sea salt with certain concentration and can be used for sterilizing and disinfecting so as to remove pesticide residues of vegetables.

The invention discloses a spent liquor filtering device, which comprises a casing. The top of the casing is fixedly connected with a liquid inlet box, and the interior of the casing is respectively movably connected with a first screen and a second screen. The left sides of the two screens penetrate through the casing and extend to the outside of the casing to be respectively and fixedly connectedwith a fixed block and a fixture block. The right sides of the fixed block and the fixture block are both movably connected with the left side of the casing. A snap-gauge is movably connected insidethe first screen. One side of the snap-gauge sequentially penetrates the first screen and the casing and extends to the inside of the casing to be fixedly connected with a first spring. According to the invention, by cooperatively using the first screen, the second screen, the fixed block, the fixture block, the snap-gauge, the first spring, a movable block, a movable plate, a connecting block, asupport rod, a connecting plate and a second spring, the spent liquor filtering device is convenient for replacing filter elements, and the spent liquor filtering device does not need to be fixed by screws, thus saving time and labor and being beneficial to people for use.

The invention relates to the technical field of vacuum hot pressing, in particular to a vacuum hot pressing technology of an automobile Cu and Mg composite belt. According to the vacuum hot pressing technology, a base is included, and a control cabinet is arranged at one end of the top of the base; a display screen is arranged on the outer wall of the front face of the control cabinet; a work indicating lamp is arranged on one side of the display screen; a control button is arranged at the bottom of the work indicating lamp; the side wall of the side, close to the control button, of the control cabinet is fixedly connected with a first guide wire; the end, away from the control cabinet, of the first guide wire is fixedly connected to a vacuum pressure pump; the side, away from the controlcabinet, of the vacuum pressure pump is fixedly provided with a communicating tube; the end, away from the vacuum pressure pump, of the communicating tube fixedly communicates with the inner wall of afurnace body; a second guide wire is arranged at the top of the first guide wire; and one end of the second guide wire is fixedly connected to the control cabinet. According to the vacuum hot pressing technology, through the scientificity, practicability and effectiveness of the overall structural design, the whole working effect is better, using is more convenient, the working efficiency is improved, and meanwhile the manufacturing cost is lower compared with other similar products.

The invention provides a blighted grain dust remover which comprises a feeding hopper, a dust removal bin, a blowing pipeline, an air blower and a dust outlet pipeline. The top of the dust removal bin is communicated with the feeding hopper, a dust outlet and an air inlet are formed in the side of the dust removal bin, a discharging opening is formed in the bottom of the dust removal bin, the dust outlet pipeline is communicated with the dust outlet of the dust removal bin, a filter screen is arranged on the dust outlet, the filter screen is a metal filter screen with the length of 22 cm to 28 cm and the width of 13 cm to 17 cm, the aperture of meshes of the filter screen is 0.8 mm to 1.1 mm, the air inlet is communicated with the blowing pipeline, and the blowing pipeline is communicated with an air outlet of the air blower. The blighted grain dust remover is reasonable in structural design, dust and other impurities in blighted grain can be effectively removed on the premise of low dust, and the blighted grain can be reutilized conveniently.

The invention discloses a disposable enemator for outpatient nursing, and relates to the technical field of outpatient nursing. In order to solve the liquid medicine mixing problem of a disposable enemator, the following scheme is provided, the disposable enemator comprises a first shell, wherein a transverse plate is arranged in the first shell; a guide rod is movably connected into the first shell; stirring blades are arranged on the guide rod at equal intervals; a fixing plate located on the guide rod is arranged below the stirring blades; the bottom end of the guide rod is connected with asecond shell through a bolt; a second rubber plug is bonded to the outer wall of the bottom of the second shell; and two worm wheels are rotationally connected to the inner wall of the top of the second shell. According to the device, through combination of various structures, a liquid medicine is stirred and mixed, so that the effect of the liquid medicine is improved, waste of other medical instruments is reduced, the cost is saved, the working efficiency is improved, the use condition of the liquid medicine can be conveniently observed, and therefore the liquid medicine is prevented from being used excessively and lacking.

The invention discloses an experiment system and an experiment method for tangential filtration of a high pressure resistant flat reverse osmosis (RO) membrane. The experiment system comprises a material feeding pot, a pressure pump, a flat RO membrane filtration device, a storage pot, a pressure gauge, an adjustment valve and a safety valve. The experiment method comprises the following steps of: (1) arranging an RO membrane between a top plate and a base plate, and fastening the top plate and the base plate together through bolts; (2) connecting equipment; (3) keeping the safety valve closed and the adjustment valve opened, and starting the high-pressure pump; (4) gradually turning down the opening degree of the adjustment valve, so that the liquid feeding pressure of the flat RO membrane filtration device is raised until material liquid flowing through the membrane flows out; and (5) finishing collecting the filtered material liquid, stopping the pump, and opening the adjustment valve and the safety valve to release pressure. The experiment system is feasible in a laboratory and can bear high pressure required by tangential filtration of the flat RO membrane so as to finish an RO filtration experiment; and according to the experiment method, the pollution situation of the membrane in each filtration stage can be observed conveniently, and researches on a pollution control technology is facilitated.

The invention relates to the technical field of liquid level monitoring, in particular to a liquid level display device of a red bayberry juice storage tank, and solves the problems that in the prior art, no liquid level display device exists, the use condition of red bayberry juice in the tank is inconvenient to observe, manual cleaning is adopted, and manpower is consumed. A liquid level display device of a red bayberry juice storage tank comprises a tank body, a sealing cover is fixedly connected to the top of the tank body, a feeding port is formed in one side of the top of the sealing cover, a floating cylinder is arranged in the tank body, a floating rod is fixedly connected to the center of the top of the floating cylinder and is of an L-shaped structure, and an observation through groove is formed in one side of an inner cavity of the tank body. A scale rod is arranged on the inner side of the observation through groove and sleeved with a sliding sleeve, the side, close to the floating cylinder, of the sliding sleeve is fixedly connected with one end of the horizontal section of the floating rod, and a transparent sealing plate is fixedly connected to the outer side of the observation through groove. The liquid level display device is arranged, so that the use condition of the red bayberry juice in the tank is conveniently observed, manual cleaning is replaced, and manpower is saved.

The invention discloses an adjustable stone needle smoke control suspended moxibustion cylinder and an operation method. The suspended moxibustion cylinder comprises an inner channel cylinder, an outer spiral sleeve, a moxa-stick fixing base, a stone needle ring and a fire extinction cover. The inner channel cylinder is sleeved with the outer spiral sleeve and provided with a plurality of radial channels, the inner wall of the outer spiral sleeve is provided with vertically-through spiral inner grooves, and the area of a moxa-stick combustion zone can be changed by changing the relative position of the inner channel cylinder and the outer spiral sleeve; the moxa-stick fixing base is arranged on one side of the inner channel cylinder, and the stone needle ring and the fire extinction cover are arranged on the other side of the inner channel cylinder so that the moxa-stick combustion surface and the upper port of the stone needle ring can be located in the same plane, the contact circulation between the moxa-stick combustion surface and air can be reduced, and reduction of the moxa-stick combustion speed and smoke control can be achieved.

The invention relates to a plug replacement device for vacuum use of a tank and a working method of the plug replacement device, and relates to the field of tank processing. The plug replacement device for vacuum use of the tank and the working method of the plug replacement device have the advantages of simple structure, convenient plug disassembly and assembly and avoiding of vacuum damage. An interlayer is arranged on the outer side wall of the tank, an auxiliary pipe communicates with the interlayer, a plug is arranged in the auxiliary pipe, and a sealing ring is arranged on the plug; theplug replacement device further comprises a valve body I, a valve body II, a vacuum ball valve I, a vacuum ball valve II and a valve rod, wherein openings are formed in the two ends of the valve bodyI, one end of the valve body I is detachably connected with the auxiliary pipe, and the other end of the valve body I is fixedly connected with the vacuum ball valve I; and a connecting opening is formed in the outer side of the valve body II, the connecting opening is connected with the vacuum ball valve II through a clamp II, and the vacuum ball valve II is connected with a vacuum pump. According to the plug replacement device for vacuum use of the tank and the working method of the plug replacement device, on the premise of not damaging vacuum, the use condition of the sealing ring can be conveniently observed, and the replacement is convenient.

The invention relates to an aromatherapy machine for solid balsam. The aromatherapy machine comprises a heating module, a shell, a fan and wind shielding assemblies, wherein a mounting cavity and a plurality of independent storage cavities are formed in the shell; the heating module and the fan are both arranged in the mounting cavity; an air inlet a for communicating the mounting cavity with theoutside is formed in the shell, and an air inlet b for communicating each storage cavity with the mounting cavity is formed in the position, between each storage cavity and the mounting cavity, in theshell; an air outlet for communicating the storage cavity with the outside is formed in the position, corresponding to each storage cavity, of the shell; and the wind shielding assembly for closing and opening the air inlet b communicating with the storage cavity is arranged at the position, corresponding to each storage cavity, of the shell separately. The beneficial effects are that a pluralityof storage cavities are formed, so that solid balsam with different fragrance types can be placed in the respective storage cavities, when the solid balsam in one or more storage cavities needs to beheated to generate aromatherapy smell, the air inlets b in the corresponding storage cavities can be opened through the wind shielding assemblies, and the application range is wider.

The invention provides a stirring machine capable of efficiently completing concrete stirring. The machine capable of efficiently completing concrete stirring comprises a base frame, a material storing mechanism, a preliminary mixing auxiliary mechanism and a stirring mechanism; the material storing mechanism comprises a material storing cylinder, a positioning pillar, a plurality of partition plates and an insulation plate, the material storing cylinder is installed on the base frame, the positioning pillar is located in the material storing cylinder and coaxially arranged with the material storing cylinder, the partition plates are located in the material storing cylinder and connected with the positioning pillar and the material storing cylinder, and the insulation plate is detachably installed on the lower portion of the material storing cylinder; the preliminary mixing auxiliary mechanism comprises a material guiding frame, a material gathering frame and a material splitting block, a material guiding through hole is formed in the material guiding frame, and a material gather through hole is formed in the material gathering frame; and the stirring mechanism comprises a first gear, an arc-shaped plate, an installing fame, a stirring barrel and a second gear, and a transmission ring is installed on the stirring barrel. The stirring machine capable of efficiently completing concrete stirring is convenient to use, stirring efficiency of concrete is effectively improved, and the using quantities of various materials are convenient to observe.

The invention discloses a condensation-type dryer. The condensation-type dryer comprises an outer barrel, an inner barrel and a gas circulation pipeline arranged between the outer barrel and the inner barrel; a drying chamber containing clothes is formed in the inner barrel, and the inner barrel is rotatably connected to the outer barrel; a first condenser and a second condenser are connected to the gas circulation pipeline, the portion, between the first condenser and the second condenser, in the gas circulation pipeline is provided with a thread chip collection device, and the thread crumb collection device comprises a thread crumb adsorption band which intersects with the gas circulation pipeline and is a net-shaped adsorption band with viscose on the surface. The dryer is good in condensation effect and thorough in thread crumb removing.

The invention discloses a maintenance system for the technical research service. The maintenance system comprises a box body and a wireless controller. A water pump is arranged on the upper side of the box body. Water pipes are arranged on the two sides of the water pump. One side of each water pipe is connected with the box body and extends into the bottom of the box body. The other ends of the water pipes are vertically and upward connected with a tee. Transverse pipes are correspondingly connected to the two sides of the tee. Side pipes are connected to the two sides of each transverse pipe. Multiple spray heads are arranged on the transverse pipes and the side pipes. The box body is filled with maintenance water. Irony support legs are arranged on the lower side of the box body. Walking wheels are arranged on the lower sides of the irony support legs. A drive motor is arranged on the lower side of the box body. A drive shaft is arranged at the output end of the drive motor. By theadoption of the maintenance system for the technical research service, water can be sprayed to the positions, such as the beam ends of bottom layers of bottom plates and the interiors of frange platesof the outer sides of box beams, the water is evenly sprayed, the maintenance effect is guaranteed effectively, automatic spraying and maintenance can be achieved through wireless control, the operations are convenient and fast, and the quality of the prefabricated box beams is guaranteed.

The invention relates to lubricating oil and a preparation method thereof. The lubricating oil comprises the following components in parts by weight: 65 to 95 parts of base oil; 1.5 to 3 parts of an antiwear functional agent; 2 to 8 parts of a reinforcing agent; 4 to 15 parts of a viscosity index agent; 0.2 to 1 part of a pour point depressant; 1.5 to 3 parts of an antioxidant and 0.1 to 0.5 partof an anti-foaming agent; the reinforcing agent is formed by mixing the following raw materials in parts by weight: 68 to 75 parts of polymethyl methacrylate; 28 to 35 parts of ester oil; 5 to 10 parts of a diphenylamine antioxidant containing butyl and octyl; 5 to 10 parts of beta-(3,5-di-tert-butyl-4-hydroxy phenyl)propionic acid isooctyl alcohol ester. The lubricating oil prepared through the method has the characteristics of good low-temperature property, appropriate viscosity and good antiwear effect.

The invention provides a two-section independent temperature-control biological 3D printing spray nozzle. The two-section independent temperature-control biological 3D printing spray nozzle comprisesa main shell, a material barrel, a spraying nozzle extruding device and a spraying nozzle needle, a first temperature-control device is arranged in the main shell, the material barrel is inserted intothe first temperature-control device, and the bottom end of the material barrel is connected with the spraying nozzle extruding device through a feeding pipe. A discharging pipe is arranged at the bottom end of the spraying nozzle extruding device, the spraying nozzle needle is connected with the discharging pipe and penetrates out to the outer side of the bottom of the main shell, a second temperature-control device is arranged between the tail end of the spraying nozzle needle and the top end of the discharging pipe, and a heat isolating device for preventing mutual interference of the temperatures is arranged between the first temperature-control device and the second temperature-control device. According to the two-section independent temperature-control biological 3D printing spray nozzle, independent temperature control over the spraying nozzle material barrel section and the spraying nozzle needle section is achieved, gradient temperature control of the spraying nozzle can be achieved, all gradient values are mutually independent, and temperature control is not affected by one another.

The invention discloses a precise pain-measuring device for neurology department examination, which comprises a shell, wherein a vibration motor, a processor, a pressure sensor and a storage battery are fixedly connected to the top part of the inner cavity of the shell sequentially from left to right; the bottom of the vibration motor is fixedly connected with a connecting block; the bottom of theconnecting block runs through the shell and extends to the outside of the shell; the inner part of the connecting block is movably connected with a moving block; the bottom of the moving block runs through the connecting block and extends to the outside of the connecting block and is connected with a hammer; by arranging the shell, the vibration motor, the processor, the pressure sensor, the storage battery, the connecting block, the moving block, a first spring, a connecting plate, a moving rod, a circular arc block, a second spring and a display, the examination of the precise pain-measuring device for neurology department examination is precise, the device does not need a doctor to perform manual examination by using a hammer, and the treatment of a patient cannot be influenced due tothe experience judgment of a physician, thereby being beneficial to the use by people.

The invention discloses a roller belt conveyor. The roller belt conveyor comprises a middle frame, supporting legs, a transmission drum, a transmission drum driving device, a conveyor belt, a ball screw transmission device, an upper roller assembly, a return roller assembly and a turnabout drum. The conveyor belt is wound around the transmission drum, the upper roller assembly, the turnabout drum and the return roller assembly sequentially and then is sewn end to end. The upper roller assembly comprises a horizontal roller and an adjustable roller groove angle device, wherein the horizontal roller is provided with a roller bearing explosion prevention device; the adjustable roller groove angle device is installed adjacent to the horizontal roller and adjusts the wrap angle of the conveyor belt through the ball screw transmission device. The conveyor achieves adjustable conversion of conveying of bagged materials and bulk materials; in addition, when conveying the bulk materials, as the conveyor belt is folded towards the middle, the materials will not be scattered, and the burden of working staff is relieved. The usage conditions of roller bearings can be conveniently observed, observation, maintenance and replacement are facilitated, and safety performance is greatly improved.

The invention relates to a steam mop. The steam mop comprises a mop rod provided with a handle at the top end, a water tank, a steam generator and a planker provided with a mop cloth on the bottom surface. The steam mop is characterized by further comprising an ultraviolet lamp, a draught fan and a water tank installation base, the water tank installation base is installed at the lower end of the mop rod, the planker is installed at the lower end of the water tank installation base in a rotary mode, the water tank is embedded in the water tank installation base, a water outlet of the water tank is connected with an inlet of the steam generator arranged in the water tank installation base, a steam outlet of the steam generator is connected with a spray orifice in the planker through a pipeline, the outer circle of the bottom of the planker is provided with the ultraviolet lamp and an air outlet, and the air outlet is connected with the draught fan arranged inside the water tank installation base. The steam mop is scientific and reasonable in structural design, has the advantages that the sterilization effect is good, a cleaned surface can become dry instantly after being mopped, water injection efficiency is high, using is convenient, labor is saved, and service life is prolonged, and is a highly innovative water tank inlaid type steam mop.