35results about How to "Guaranteed rotation speed" patented technology

The invention provides a biomass particle fuel forming screening and split charging production line. An elevating mixing device, a forming device, a drying screening device, a split charging device and an elevating conveying device are included. The elevating mixing device comprises a first feeder, two elevators, a raw material bin and a mixing flow dividing machine. Each elevator is internally provided with a first conveying mechanism driven by a first drive motor. A first mixing mechanism is arranged in the raw material bin. A second mixing mechanism is arranged in the mixing flow dividing machine. An extrusion material stirring mechanism and a speed reduction mechanism are arranged in the forming device. The drying screening device comprises a drying machine and a vibration screen. The split charging device comprises a weighing machine, a packaging machine, a conveyor and a control system. A partition mechanism, an iron removal mechanism, a weight sensor and a fixing mechanism are arranged in the weighing machine. The biomass particle fuel forming screening and split charging production line has the characteristics that raw material mixing is uniform and sufficient, running stability is good, the production efficiency is high, the drying effect is good, and the finished product quality and the qualification rate are high.

The invention provides a rotary boiler. The rotary boiler comprises a boiler body and is characterized in that a water boiling chamber is formed in the boiler body and located at a rotary device below; flame spraying devices are installed on the left side and the right side of the water boiling chamber correspondingly; a heating strip is arranged in the water boiling chamber; a water adding opening is arranged above the water boiling chamber, and an air outlet is formed in the right side of the water adding opening. The flame spraying devices are used for spraying flame towards the water boiling chamber. The rotary device drives the water boiling chamber, so that the water inside the water boiling chamber is heated uniformly. A liquid level detector is used for detecting the water level in the water boiling chamber, and water adding is stopped when the water level reaches the water adding opening of the liquid level detector, so that water source waste is reduced. A position detection device is used for determining the position of the water boiling chamber according to the signal emitted by an infrared emitter, the rotation speed and the stop position of the water boiling chamber are guaranteed, manual operation is reduced, and economical benefits are increased for enterprises.

The invention relates to a horizontal type rotary blade paddle system of a kneader. The system comprises a kneading barrel and a kneading main shaft, wherein the kneading main shaft is horizontally and rotationally arranged inside the kneading barrel, and the two ends of the kneading main shaft are rotationally connected with the side walls of the two ends of the kneading barrel through a sealing device; two kneading blades are arranged inside the kneading barrel which are arranged at interval, and the two ends of each kneading blade are connected with the kneading main shaft through cutter bars; a discharging hole is formed in the bottom of the kneading barrel, and brackets are arranged at two sides of the kneading barrel and are provided with movable insertion plates; an air cylinder is fixedly arranged at the lower end of the kneading barrel, an output shaft of the air cylinder is connected with the insertion plate, and the insertion plate is driven to horizontally move to the discharging hole through flexibility of the air cylinder; the air cylinder is connected with an air source device through an electromagnetic valve; and the lower end of the kneading barrel is provided with a time relay and a pressure relay. Compared with the prior art, the system has the advantages that material feeding can be automatically controlled, the excessive kneading in the kneading barrel can be prevented, and the kneading quality can be guaranteed.

The invention relates to the field of stewing equipment and discloses a dried bean curd stewing device. The dried bean curd stewing device comprises a box body and supporting legs, wherein the box body is composed of an outer box and an inner box; the inner box is arranged at the inner side of the outer box and a rotary shaft sleeve is fixedly arranged at the bottom of the outer box; the rotary shaft sleeve is of a cavity structure; a rotary shaft is fixedly arranged at the bottom of the inner box; the rotary shaft penetrates into the rotary shaft sleeve; the rotary shaft is fixedly provided with a windmill vertical to the rotary shaft; a stirring rod is arranged in the inner box; the stirring rod is fixedly connected with the inner box; steam inlets are formed in the bottom of the outer box; the steam inlets are located below the windmill; each steam inlet is provided with a sealing sleeve; a steam pipeline is arranged among the sealing sleeves; the sealing sleeves are communicated through the steam pipeline; the steam pipeline is provided with a steam input hole and a steam output hole; the steam output hole is in sealed connection with a steam generator. By adopting the dried bean curd stewing device, stewing is more uniform, and the contact between soybean products and stewing liquid is more sufficient.

The invention discloses a method for processing a spring steel arch belt. The method comprises the following steps: 1) feeding molten steel to a spring steel arch belt mold; 2) stamping an arch belt center groove from a spring steel arch belt blank; 3) coating a non-decarburization coating on the spring steel arch belt blank, heating to 840-870 DEG C, carrying out heat preservation for 30-40 minutes, and then quenching and cooling the spring steel arch belt blank coated with the non-decarburization coating in quenching oil at 75-85 DEG C for 4-6 minutes; 4) carrying out tempering treatment on the spring steel arch belt blank which is quenched and cooled; 5) carrying out cooling treatment of a nitrate bath on the tempered spring steel arch belt blank; and 6) polishing the top surface and the bottom surface of the spring steel arch belt blank cooled by the nitrate bath through a grinding machine, so as to form a spring steel arch belt product. By adopting the method, the strength of the spring steel arch belt is improved, the service life is prolonged, and the rotation speed of a double twister is ensured.

The invention discloses an environment-friendly flue gas desulfurization system. The system comprises a desulfurization tower body. A gas outlet is connected to the outer surface of the upper end of the desulfurization tower body in a penetrating mode. Four sets of supporting columns are fixedly installed at the positions, close to the edge, of the outer surface of the lower end of the desulfurization tower body. According to the device, an anti-blocking shell can be arranged, when water enters the anti-blocking shell from a water storage cavity and enters a flowing cavity through a second water inlet, the impact force of the water flow drives a fan to rotate, so that the problem that in actual work, after the furnace tail gas is filtered by a filter screen for desulfurization, fine calcium sulfate and calcium sulfite solid precipitate particles contained in the generated liquid can easily collide with and contact the surface of the filter screen and be stacked under the inertia effect when flowing along with the liquid, and a pipeline is blocked by filtered impurities after long time is avoided, it is guaranteed that the filter screen normally plays a role, and the overall practicability is improved.

The invention discloses a centrifugal ultrafine dry powder fire extinguishing device which comprises an outer cylinder, a dry powder storage tank and a motor. A first long seam extending in the axial direction is formed in the side wall of the outer cylinder. The two ends of the outer cylinder are connected with an upper cover and a lower cover correspondingly. A second long seam extending in the axial direction is formed in the side wall of the dry powder storage tank. A rotary shaft is arranged on the dry powder storage tank. The upper end of the rotary shaft penetrates out of the upper cover. The motor is in transmission connection with the rotary shaft through a transmission mechanism. According to the centrifugal ultrafine dry powder fire extinguishing device disclosed by the invention, the structure is simple, ultrafine dry powder is sprayed out of the long seams through the centrifugal spraying theory, thus, the ultrafine dry powder has a certain speed and can be rapidly spread into a narrow space in an electric control cabinet, and the ultrafine dry powder can be prevented from being blown away or carried away.

The invention discloses an automatic opening flattening machine for a thin-walled stainless steel pipe. The automatic opening flattening machine comprises a machine cabinet, and an electrical controldevice and an industrial personal computer are mounted in the machine cabinet; a base is mounted at the top of the machine cabinet; two mutually parallel linear slide rails are arranged on the base; ascrew rod supporting seat is mounted on the base; a screw rod is arranged on the screw rod supporting seat in a sleeving manner; one end of the screw rod is connected with a screw motor; a transmission box is arranged on the screw rod supporting seat; a driving motor connected with the transmission box is mounted on the transmission box; a rotating spindle is mounted in the transmission box; oneend of the rotating spindle is connected with a decelerator in the transmission box; the other end of the rotating spindle stretches out of the transmission box; a rotating lathe tool is mounted at the stretching end of the rotating spindle; and a pipe fixture is mounted on one side of the rotating lathe tool. According to the automatic opening flattening machine, the problems that pipe openings deform, the security risk is high, and efficiency is low when traditionally, devices like a cutting machine / angle grinder are manually utilized to flatten the openings are solved.

The invention discloses an automatic pipe cutting machine, which comprises a machine tool. The machine tool is provided with a feed pipe, a knife rest and a cylinder group for controlling the movement of the knife rest. The automatic clamping device on the top, the feeding device includes a frame, a storage rack, a material distribution device, a clamping mechanism and a pushing device; the automatic clamping device includes a hollow tube, a collet and a tensioner, The hollow tube is set in the feeding tube, and one end of the hollow tube close to the tool holder is connected with a collet for clamping the tube material, and the other end is installed with a tensioner that drives the hollow tube to reciprocate in the feeding tube. The end of the tube close to the tool holder is provided with a compression ring adapted to the collet. In the present invention, the pipe material is clamped by setting a feeding device and an automatic clamping device for clamping the pipe material on the machine tool, and then the pipe material is cut through the knife rest on the machine tool, so that the pipe material can be continuously cut, and at the same time The input cost of equipment is also reduced.

The invention relates to the strategic emerging technical field, and discloses a wind driven generator with a self-adjusting rotating speed. The wind driven generator comprises a wind wheel shaft, one end of the wind wheel shaft penetrates through a cabin, one end of the wind wheel shaft is fixedly sleeved with a rotor, and the end, close to the cabin, of the rotor is fixedly connected with a second collecting ring. The wind wheel shaft is movably sleeved with a brake assembly, one end of the brake assembly is fixedly connected with a second electric brush penetrating through one end of the cabin, the second electric brush is clamped in the second collecting ring, and the center of the front end of the cabin is fixedly connected with a first collecting ring. According to the wind driven generator with the self-adjusting rotating speed, through designed main blades, designed auxiliary blades and designed movable electromagnets, when external wind power changes greatly, under the action of centrifugal force, the electromagnets displace, the magnitude of current received by the brake assembly is changed, the brake force of the brake assembly is reduced or increased, and therefore the speed reduction effect of the wind wheel shaft is reduced or increased, and the rotating speed of a wind wheel is kept within a safe range.

The invention belongs to the technical field of optical fibers, and particularly relates to optical fiber coupling equipment capable of automatically adjusting the stress of a wire body according to the rotating speed, wherein the optical fiber coupling equipment comprises a production seat, a rotating shaft is rotatably connected to the interior of the production seat, a coil spring is movably connected to the outer surface of the rotating shaft, and a coupling seat is fixedly connected to the interior of the production seat. A supporting seat is fixedly connected to the side surface of the coupling seat, a rotating disc is movably connected to the interior of the production seat, a protective seat is fixedly connected to the interior of the coupling seat, an electromagnetic seat is fixedly connected to the interior of the protective seat, and a magnetic seat is movably connected to the side, away from the electromagnetic seat, of the interior of the protective seat; a compression rodis movably connected to the side surface of the magnetic seat, and one end of the compression rod penetrates through the interior of a hollow cavity base. During use, the effect of keeping the rotating speed to properly wind an optical fiber body can be achieved, the internal stress is uniform after coupling is completed, and beneficial effects are brought to later use of the optical fiber.

In an apparatus at a spinning room machine, especially a carding machine, cleaner or the like, for drawing a clothing onto a roller using a roller drive unit, which apparatus comprises a drive motor arranged to be in drive connection with the roller drive unit or with at least one roller of the machine, the drive motor co-operates with a rotary speed adjustment device. In order to allow, by simple means, automatic matching of the actual value of the speed of rotation to a prespecified value of the speed of rotation, the drive motor co-operates with a closed-loop rotary speed control device which is incorporated into the control and regulation device of the spinning room machine.

The invention discloses a strengthened machining mechanism and equipment for machining a bearing outer ring raceway. The strengthened machining mechanism comprises a machining hopper, a clamping mechanism and a circumferential spraying mechanism. The machining hopper is located above the circumferential spraying mechanism. The circumferential spraying mechanism comprises a centrifugal rotary wheeland a rotation driving motor. The machining equipment comprises a strengthened machining module and a cyclic feeding module. The strengthened machining module comprises a machining box and a strengthened machining mechanism. The cyclic feeding module comprises a liquid feeding mechanism, a solid feeding mechanism and a solid-liquid separation mechanism. The liquid feeding mechanism comprises a storage container, a first delivery pipe and a delivery pump. The solid feeding mechanism comprises a feed hopper, a second delivery pipe and a conveyor. The solid-liquid separation mechanism comprisesa separation screen. The separation screen is located between the bottom of the feed hopper and an opening of the storage container. The strengthened machining mechanism and equipment realizes strengthened machining on the bearing outer ring raceway, also realizes continuous cyclic machining and greatly improves the machining efficiency.

The invention relates to the technical field of deaerator exhaust energy recovery, and discloses environment-friendly deaerator exhaust energy recycling equipment which comprises a barrel body, wherein supporting legs are arranged at the bottom of the barrel body, a breather tube and a cold water tube are embedded into the surface of the barrel body, a supporting rod is welded to the bottom of the inner wall of the barrel body; and an annular supporting table is arranged at the top end of the supporting rod. According to the environment-friendly deaerator exhaust energy recycling and recirculating equipment, vortex blades and a push plate are arranged on the surface of a rotary barrel, cold water and gas in the cold water tube and the breather tube directly hit the surface of the push plate when entering the barrel body, then the rotary barrel rotates by pushing the push plate through the flowing speed of the cold water and the gas, so that the exhaust energy of the deaerator can be recycled; and then the cold water and the gas are pressed into the bottom of the barrel body together through rotation of the vortex blades, so that the cold water and the gas have sufficient time to roll and mix, and thus, a heat absorption rate of the energy recycling device is further improved.

The invention discloses a new energy vehicle washing tool. The structure comprises a main body, wherein a water inlet cavity is formed in the main body; the water inlet cavity is fixedly connected andcommunicated with a water pipe, a handle is fixedly arranged at the top of the main body, and a control device used for controlling the flow speed of water flowing into the main body through the water pipe and the water inlet cavity and a car washing liquid device used for controlling the dosage of car washing liquid entering the water inlet cavity are fixedly arranged in the handle and the mainbody. A rotating device rotating through the speed of water flowing out of the water inlet cavity is fixedly arranged on the lower portion of the main body, the rotating device is rotationally connected with the main body through a first hole, and the first hole is formed in the bottom of the main body; a brush and a first sponge block are fixedly arranged on the bottom of the main body; accordingto the new energy vehicle washing tool, the flow of water entering the sixth inner cavity is controlled through the first pull rod, the use amount of automobile washing liquid is controlled through the button, the first sponge block can prolong the retention time of water on the two surfaces of an automobile to be washed, and the effects of water storage and water saving are achieved.

The invention discloses a method for processing a spring steel arch belt. The method comprises the following steps: 1) feeding molten steel to a spring steel arch belt mold; 2) stamping an arch belt center groove from a spring steel arch belt blank; 3) coating a non-decarburization coating on the spring steel arch belt blank, heating to 840-870 DEG C, carrying out heat preservation for 30-40 minutes, and then quenching and cooling the spring steel arch belt blank coated with the non-decarburization coating in quenching oil at 75-85 DEG C for 4-6 minutes; 4) carrying out tempering treatment on the spring steel arch belt blank which is quenched and cooled; 5) carrying out cooling treatment of a nitrate bath on the tempered spring steel arch belt blank; and 6) polishing the top surface and the bottom surface of the spring steel arch belt blank cooled by the nitrate bath through a grinding machine, so as to form a spring steel arch belt product. By adopting the method, the strength of the spring steel arch belt is improved, the service life is prolonged, and the rotation speed of a double twister is ensured.

The invention relates to a lump-shaped material forcible pressing device which comprises a barrel body and two feeding rollers, wherein the two feeding rollers are horizontally arranged in the barrelbody at an interval; two ends of each feeding roller are connected with a bearing structure by penetrating through two side walls of the barrel body respectively, and one end of one feeding roller isconnected with a first reversing gear and a chain wheel sequentially by penetrating through the bearing structure; one end of the other first feeding roller is connected with the second reversing gearby penetrating through the bearing structure; the first reversing gear and the second reversing gear are meshed and connected; a sealing structure is sleeved at the joint of each feeding roller and the side wall of the barrel body; the upper end of the barrel body is provided with a voice control switch, and the top of the inner side of the barrel body is provided with an electric magnetic generating device and an ultrasonic device; and a filter screen is arranged at the bottom of the inner side of the barrel body. Compared with the prior art, the lump-shaped material forcible pressing deviceprovided by the invention prevents an iron object from influencing the material pressing efficiency of the two feeding rollers, and accelerates the discharge of materials after the material pressingis completed; and the material of which the pressing is not completed is positioned at the upper part of the inner side of the barrel body, and the material pressing is repeated to ensure the materialpressing quality.

The invention relates to a roller anti-loose structure. The roller anti-loose structure comprises a roller, a locking inner sleeve and a clamping inner sleeve, the inner ring of the roller is matchedwith the outer ring of the locking inner sleeve; the locking inner sleeve is matched with the inner ring of the roller and the outer ring of the clamping inner sleeve; the inner ring of the clamping inner sleeve is connected with a shaft, and the outer ring of the clamping inner sleeve is matched with the inner ring of the locking inner sleeve. The roller anti-loose structure is simple in structure, reasonable in design and convenient to use, the original interference fit of a transmission device is changed to be fixedly connected, the abrasion of the roller and the inner sleeve is effectivelyreduced, the service life of the transmission device is prolonged, and the economic cost of equipment is reduced; in addition, the rotating speed of the roller can be well guaranteed through the roller anti-loose structure.

The invention relates to the technical field of pediatric masks, and discloses a pediatric immune system disease treatment mask which comprises: a mirror frame body which is provided with a half-surface observation opening, wherein the inner side of the mirror frame body is provided with a soft silica gel frame body used for being attached to the face, the two sides of the top of the mirror frame body are provided with hanging lug notches, binding bands used for binding are arranged in the hanging lug notches, and reserved binding pieces are arranged on the lower portions of the two sides of the mirror frame body. When the product is worn, the soft silica gel frame body is attached to the face of a patient, the binding band is tied tightly, through the use of the soft silica gel frame body, the mirror frame body can be better attached to the face of the patient, and under the action of the flexibility of the soft silica gel frame body, the sealing effect can be achieved, and external air cannot enter from the contact part of the soft silica gel frame body and the face, the sealing property and the safety are ensured, and the binding piece is reserved, so that the combinability of the mirror frame body and the face is improved, and the balance of the mirror frame body on the face is ensured.

The invention provides a preliming reactor, which comprises a cylinder, a juice inlet pipe, a juice outlet pipe, a stirring device, a pH control device, a flow control device, a phosphoric acid adder and a variable-frequency juice outlet pump; the variable-frequency juice outlet pump is communicated with the cylinder through the juice outlet pipe; the pH control device is used for detecting and controlling the pH of cane juice at the juice inlet pipe; the flow control device is used for detecting the flow information of the juice outlet pipe, and controlling the operating speed of the variable-frequency juice outlet pump according to the flow information, thus controlling output flow; and the phosphoric acid adder is used for adding phosphoric acid into the bottom of the cylinder or the juice outlet pipe. The invention further provides a preliming method by utilizing the preliming reactor. According to the preliming reactor and method, the large emergent flow change cannot occur in the follow-up procedures through the flow control of the preliming reactor, the stability of the follow-up procedures can be guaranteed, and further the output and quality of cane sugar can be guaranteed.

The invention discloses a well washing sampling pump for an environment monitoring well, the structure of the well washing sampling pump comprises a main body, a base and a top cover, the bottom of the main body is provided with the base, the top cover is clamped at the top of the main body, the main body comprises a heat dissipation shell, a rear clamping cover and a water pumping device, the water pumping device comprises a rotating impeller, a water inlet and a water pumping groove, and the rotating impeller comprises a rotating shaft, an impeller and a sealing device. The impeller comprises an impeller body, a friction block, an inlet groove and a sand discharging opening, the sand discharging opening comprises a sand discharging groove, an elastic piece block and a deformation groove, the impeller is driven by the rotating shaft to rotate anticlockwise, so that water flow and silt mixed in the water flow can directly enter the inner side of the impeller, and the impeller pushes the water flow and the silt to flow into the water pumping groove; friction between impeller rotation and silt can be reduced, the rotation speed of the impeller is increased, and the extraction speed of the silt mixed in water is increased.

The invention discloses a watercolor easel for outdoor sketching, and relates to the technical field of watercolor easel. The watercolor easel for outdoor sketching comprises a connecting piece, first supporting legs are rotationally installed at the lower ends of the left side and the right side of the connecting piece, second supporting legs are rotationally installed at the lower end of the back face of the connecting piece, a fixing mechanism is movably inserted into the center of the top of the connecting piece, and an air inlet mechanism is fixedly installed at the upper end of the fixing mechanism, the bottom of the fixing mechanism is movably connected with a drawing board in a lap joint mode, and the drawing board is movably connected with the front face of the first supporting leg in a lap joint mode. According to the watercolor easel for outdoor sketching, the fixing mechanism is arranged to be matched with the air inlet mechanism, after the drawing board is fixed, the surface of a watercolor is air-dried through the air inlet mechanism, the air-drying time of the watercolor is greatly shortened, and the situation that the watercolor is contaminated by outdoor sundries and damaged in the long-time air-drying process is avoided.

The invention relates to the field of monitoring wiring box devices, in particular to an Internet-based wireless communication monitoring wiring box. A limit device is fixedly installed at the lower end, a limit slot is set inside the limit device, and the front end of the limit slot is communicated with the outside of the limit device, and limit blocks are movably installed on both sides of the limit slot corresponding to the inside of the limit device, so that the staff After completing the wiring inside the wiring box, the lower end of the wire can be put into the limit slot, so that there will be no shaking when the airflow for heat dissipation on both sides flows through, and then through the limit block, the end that penetrates into the limit slot is The arc-shaped convex setting can use the outer side of the wire to contact the arc surface on the limit block, so that the wire can be longitudinally separated to prevent the wire from shaking under the action of the air flow, and at the same time, the wires can be separated by a certain distance. The heat dissipation efficiency of the wire.

The invention provides an automatic fertilizing device without an additional power source. The automatic fertilizing device comprises an impeller, a feeding pump, a generator and a water-soluble fertilizer liquid barrel, wherein the impeller is used for being arranged in an irrigation pipeline; the generator is connected with the impeller which drives the generator to work and generate electricity; the feeding pump is connected with the output end of the generator, and an outlet of the feeding pump is used for being communicated with the irrigation pipeline; and the water-soluble fertilizer liquid barrel is connected with an inlet of the feeding pump through a material conveying pipe and is used for accommodating a liquid fertilizer. According to the automatic fertilizing device provided by the invention, when liquid flows in the irrigation pipeline, the impeller rotates to drive the generator to generate electricity and supply power to the feeding pump, and the liquid fertilizer enters the irrigation pipeline from the feeding pump to be mixed with the liquid, so that crops are fertilized while being irrigated, namely, water and fertilizer integrated irrigation is realized, and the automatic fertilizing device is widely applicable to irrigation and fertilization in channel irrigation areas, realizes automation of farmland irrigation and fertilization, and ensures uniform fertilization.

The invention relates to a numerically controlled rotary workbench, comprising a base, a workbench body, a mandrel, a support bearing, an oil injection pipe, a support ring, an angle detection device, a power transmission device, an oil retaining ring, a central control module, and the central control module and The angle detection device, the oil injection pipe, and the power transmission device are respectively connected to adjust the working mode of each component; the top surface of the base is in contact with the bottom surface of the worktable body, and there is lubricating oil between the contact surfaces. The present invention lubricates the workbench body with the oil bath between the top surface of the base and the workbench body, so that the workbench body can maintain a relatively high load, and the rotation speed is ensured by adjusting the torque during the rotation process, and the rotation speed is guaranteed within the standard range. Increased controllability further increases the precision of rotation.

The invention relates to a rotary self-propelled fire extinguishing head comprising a rotary sleeve, a swiveling cover, a fixed cove, an end cover, a screw rod, a guide bar, a driveshaft, a regulating rod, a fixing sleeve, a swiveling shaft, a guide holder and a water supply jacket. The middle of the swiveling shaft is provided with an arc-shaped convex block and the right end of the swiveling shaft is provided with a laddered water inlet; a left inclined hole is formed in the left end of the laddered water inlet; the guide holder is provided with an arc-shaped slot; a right inclined hole is formed in the left end of the water supply jacket; the left end of the water supply jacket is provided with a circular-truncated-cone-shaped seat and the right end of the water supply jacket is provided with a gate slot; the two ends of the gate slot are provided with location blocks and a semi-annular plate is arranged inside the gate slot. The arc-shaped slot, the arc-shaped convex block and the circular-truncated-cone-shaped seat can be favorite to guarantee of the rotation speed and the overall advance distance of the rotary sleeve. In addition, the function that an extinguishing head can propel while rotating can be realized, and the problem that a rescue operator can not close to the fire center for performing fire extinguish in a fire spot is effectively solved.

The invention relates to the technical field of agricultural equipment, in particular to a seed disinfection machine. The seed disinfection machine comprises a box, wherein a detachable upper cover isarranged on the box; a vertical breather pipe extends into the box and is externally connected with an air pump, and a chemical feed tube for introducing an atomized disinfectant is communicated withthe breather pipe; an exhaust port and a vertical air outlet pipe are further arranged in the box, and the air outlet pipe is located above the breather pipe and movably connected onto the upper cover of the box; a one-way open-closed type quick coupling is arranged in the box. The seed disinfection machine is provided in order to solve the problems of poor seed disinfection effect and low utilization rate of chemical mist due to the fact that seeds are not sufficiently contacted with the chemical mist in the prior art.

The invention relates to a rotary driving device for measuring and positioning, a fixed block and a movable block are arranged in an annular gap between a cylinder body and a rotating shaft, the annular gap is divided into two oil cavities between the fixed block and the movable block in the circumferential direction by the fixed block and the movable block, and two oil holes used for being communicated with the two oil cavities respectively are formed in the cylinder body. The oil hole is divided into two branch holes on the oil cavity side, the opening of the first branch hole is formed in the circumferential side wall, corresponding to the corresponding oil cavity, of the fixed block, the opening of the second branch hole is formed in the inner end wall, corresponding to the corresponding oil cavity, of the cylinder body and located in the swing area of the movable block, and a one-way valve only allowing media to flow into the corresponding oil cavity is arranged in the first branch hole. The invention also relates to a positioning measurement system adopting the rotation driving device. The driving device achieves buffering in the starting and stopping process, is simple in structure, convenient to install, reliable and durable, and facilitates improvement of efficiency and reliability of machine tool measurement positioning or other application equipment.