107results about How to "Guaranteed length" patented technology

The invention discloses a 24-channel optical fiber ring winding method which is characterized by comprising the following steps: S100, according to the length requirements of 24 groups of channel optical fibers, completing the fiber distribution work of 24 groups of optical fibers, and marking channel numbers; s200, feeding the optical fibers from the first channel to the twenty-fourth channel into optical fiber ring winding equipment, sequentially completing winding of the optical fibers from the first channel to the twenty-fourth channel according to a quadrupole symmetrical winding method, and measuring and ensuring length values; the working requirements are as follows: (1) after the optical fiber ring in each channel is wound in the winding process, two tail fibers are discharged along the fiber outlets in the side surfaces of the framework; and (2) three fiber outlets are uniformly distributed on the side surface of the skeleton in the circumferential direction, and tail fibers of eight channel optical fibers are discharged from each fiber outlet. According to the invention, a brand new 24-channel optical fiber ring winding method is designed, so that the problem of non-uniform discharge of channels of 24-channel optical fiber ring products is solved.

The invention provides an air outlet grille, an outdoor unit and an air conditioner, the air outlet grille comprises a central disc located in the center, an outer frame located on the outermost edge and a rib set located between the central disc and the outer frame, the rib set comprises circumferential ribs and radial ribs, and the radial ribs are distributed in a radiation mode with the central disc as the center; the curve along which the air guide surfaces of the radial ribs are arranged according to a position angle, an inlet angle and an outlet angle, the angle range of the position angle is 50-52 degrees, the angle range of the inlet angle is 5-10 degrees, and the angle range of the outlet angle is 10-20 degrees. The outdoor unit comprises an air outlet grille, and the air conditioner comprises the outdoor unit and an indoor unit. The radial ribs still meet the trend that the bending degree is increased along with the increase of the radius in the radial direction; and furthermore, the curve of the radial rib is ensured to have an angle which is adaptive to the rotation direction of the axial flow fan blade and the air outlet angle of the axial flow fan blade with a larger forward bend, so that the air outlet blocking is reduced, the air direction is adjusted, the local turbulence is reduced, and the heat dissipation efficiency is improved.

The invention discloses an adjustable drying box for non-woven fabric processing, which belongs to the technical field of non-woven fabric processing and comprises a box body, a first feed port positioned at the front end of the box body and a discharge port positioned at the rear end of the box body and positioned on the same horizontal plane with the first feed port. The high-pressure fan is mounted at the bottom in the box body, and the strip-shaped nozzles communicating with the output end of the high-pressure fan are arranged on the upper side and the lower side of the first feeding port, so that in the fabric conveying and drying process, gas exhausted by the strip-shaped nozzles is attached to the upper surface and the lower surface of fabric and exhausted in the fabric conveying direction, and the drying efficiency is improved. And the fabric is in a loose state in the box body, so that the fabric can be controlled to shake in a corrugated manner in the box body, the drying rate is improved, the fabric is not influenced by tension during conveying, and the quality of the dried fabric is ensured.

The invention relates to a laser catheter with a developing ring anti-falling structure, the laser catheter comprises an outer sheath tube, an optical fiber bundle, a guide wire tube and a developing ring, the guide wire tube is arranged in the outer sheath tube, the optical fiber bundle is arranged between the outer sheath tube and the guide wire tube, and the outer sheath tube, the optical fiber bundle, the guide wire tube and the developing ring at the far end of the laser catheter are fixed through filling glue. The far end of the outer sheath tube is connected with the near end of the developing ring; the developing ring is of a hollow conical structure, and the diameter of the far end is larger than that of the near end. The invention further discloses a preparation method of the laser catheter. The preparation method comprises the steps of S1, prefabricating the developing ring assembly; s2, combining the developing ring assembly with the outer sheath tube assembly; s3, injecting glue; s4, curing is conducted; and S5, grinding. The developing ring is designed to be trumpet-shaped, so that the developing ring is prevented from falling off; in the glue injection process, a silica gel cap is adopted to be matched with a dispensing machine for glue injection, the silica gel cap prevents glue from flowing out to guarantee the clean environment, the dispensing machine accurately controls the glue outlet amount, and then the length of the curing area of the far-end working area and the passability of the guide pipe are guaranteed.

The zero-gravity seat passive safety system is characterized in that a seat body is provided with a base and a seat frame located on the upper side of the base, the rear end of the seat frame is rotationally connected with the base, a lifting driving mechanism is arranged between the front end of the seat frame and the base, and the rear end of the base is rotationally connected with a backrest; a backrest retractor and a waist retractor are arranged at the two ends of the safety belt respectively, the backrest retractor is installed at the shoulder position of the backrest, the waist retractor is installed on one side of the seat frame, a safety belt inserting base is arranged on the side, away from the waist retractor, of the seat frame, and an inserting opening piece is fixedly connected to the middle of the safety belt. The socket piece can be detachably inserted into the safety belt bayonet socket; an emergency locking mechanism is arranged in the waist retractor and used for fixing and locking the safety belt in emergency. The method has the beneficial effect that the riding safety in a zero-gravity riding mode is improved.

The adjustable lock rod comprises a telescopic rod, a clamp and a sleeve rod, the clamp is arranged at the first end of the telescopic rod, the sleeve rod is provided with an insertion groove matched with the telescopic rod in size, the second end of the telescopic rod is arranged in the insertion groove and can stretch out and draw back in the insertion groove, and a plurality of positioning holes are formed in the position close to the second end of the telescopic rod in the length direction. And a positioning assembly is arranged on the sleeve rod, is provided with a positioning pin and a positioning frame, and can push the positioning pin to be inserted into the positioning hole. The overall length is adjusted through the telescopic rod and the sleeve rod capable of supporting the telescopic rod to stretch out and draw back so as to adapt to working environments of various different heights or distances, and the position of the telescopic rod can be positioned through the positioning mechanism so as to keep the adjusted length.

The present invention discloses an adjustable drying box for non-woven fabric processing, which belongs to the technical field of non-woven fabric processing, and comprises a box body, a first feed inlet located at the front end of the box body, and a discharge outlet located at the rear end of the box body and at the same level as the first feed inlet. The present invention installs a high-pressure fan at the bottom of the box body, and provides strip nozzles that are connected to the output end of the high-pressure fan on the upper and lower sides of the first feed inlet. In the process of conveying and drying the fabric, the gas discharged from the strip nozzle can be respectively adhered to the upper and lower surfaces of the fabric and discharged in the conveying direction of the fabric, and the fabric is in a loose state inside the box body, so that the fabric can be controlled to shake in a corrugated shape inside the box body, which not only improves the drying rate, but also prevents the fabric from being affected by the tension during conveying, thereby ensuring the quality of the fabric after drying.

The invention relates to a laser catheter which comprises an outer sheath tube, an optical fiber bundle and a guide wire tube, the guide wire tube is arranged in the outer sheath tube, the optical fiber bundle is arranged between the outer sheath tube and the guide wire tube, and the outer sheath tube, the optical fiber bundle and the guide wire tube at the far end of the laser catheter are fixed through filling glue; metal powder is mixed in the glue, the area filled with the glue is a first developing area, and the glue mixed with the metal powder has the developing effect under X rays. The invention further discloses a preparation method of the laser catheter. The preparation method comprises the steps of S1, glue mixing; s2, injecting glue; s3, curing is conducted; and S4, grinding. A traditional developing ring is replaced by doping the metal powder in the glue at the far end of the laser catheter, and therefore the risk that the developing ring falls off is eradicated. In the glue injection process, the silica gel cap is adopted to be matched with the dispensing machine for glue injection operation, the silica gel cap can prevent glue from flowing out to guarantee the clean environment, the dispensing machine can accurately control the glue outlet amount, then the length of the curing area of the far-end working area is guaranteed, and therefore the passing ability of the catheter is guaranteed.

The present invention discloses a large plate heat exchanger with large temperature difference and small end difference, and relates to the field of plate heat exchangers. The heat exchanger includes a frame formed by a fixed clamping plate, a bracket, an upper guide rod and a lower guide rod, a movable clamping plate is arranged in the frame, a plurality of plates are arranged between the fixed clamping plate and the movable clamping plate, and the upper and lower ends of the movable clamping plate and the plate are slidably connected with the upper guide rod and the lower guide rod, and the upper guide rod includes a support part and a guide part from top to bottom in sequence, and the movable clamping plate and the plate are respectively matched with the guide part to achieve sliding connection. The right end face of the guide part is located on the left side of the right end face of the support part, and the right end of the support part is fixedly connected with the upper end face of the bracket. The heat exchanger adopts a large aspect ratio, which can achieve a large temperature difference and a small end difference; the reinforced upper guide rod can ensure that the equipment is hung with the plates with the maximum installed area and always ensure safe disturbance and load bearing, while occupying a small space.

The invention discloses a composite material launch canister manufacturing device, and relates to the technical field of forming equipment. The forming mold comprises a core mold and an outer mold; the core mold is sleeved with the outer mold, and an annular gap between the core mold and the outer mold forms a launch canister workpiece forming gap; the outer die comprises a base, an upper die, a lower die and two side dies; a placing groove is formed in the base, and the lower ends of the two side dies and the lower die are arranged in the placing groove; the connecting positions of the upper die and the two side dies, the connecting positions of the lower die and the two side dies and the contact positions of the side dies and the base are all in an inclined plane mode. A plurality of first mounting holes are formed in the two sides of the upper die respectively, the first mounting holes are sequentially distributed in the length direction of the upper die, second mounting holes are formed in the positions, corresponding to the first mounting holes, of the base, and compression bolts are connected into the first mounting holes and the corresponding second mounting holes. The workpiece manufacturing process is simpler and more convenient, the forming size precision of the launch canister workpiece can be guaranteed, and demolding is convenient.

The utility model belongs to the technical field of manufacturing of air conditioners and air source heat pumps, and discloses a welding assembly and welding equipment for a temperature sensing pipe sleeve and a U-shaped pipe for an air conditioner, the welding assembly comprises the temperature sensing pipe sleeve and the U-shaped pipe, the temperature sensing pipe sleeve is arranged at the top or the outer side of the U-shaped pipe, and a straight line section b is additionally arranged at the top of the U-shaped pipe and is usually guaranteed to be 3-8mm. The welding assembly provided by the utility model can be directly mounted on the two devices of the air conditioner and can be automatically welded at one time along with row welding of the two devices, and manual welding does not need to be added; according to the welding equipment, the temperature sensing pipe sleeve and the U-shaped pipe can be well fixed, the length of a fusion line is guaranteed, the assembly position is guaranteed, and errors are reduced; stable cured parameters are adopted, so that the consistency of products is ensured; automatic welding is adopted, the welding efficiency is greatly improved, the equipment adopts linear passing type welding, and the structural design is simple and practical.

This utility model discloses a laser marking fixture, including a worktable, a marking support, a marking device, a workpiece support, and a length detection mechanism. The marking device is mounted on the worktable via the marking support, and the workpiece support is also mounted on the worktable. The length detection mechanism includes a first limiting block, a second limiting block, and a limiting cylinder. The first limiting block is located at one end of the worktable, and the second limiting block is located at the other end. A protrusion is provided on the side surface of the second limiting block closest to the first limiting block. A through hole is provided on the second limiting block at a location without the protrusion. The limiting cylinder is located on the side of the second limiting block furthest from the first limiting block. The workpiece is positioned between the first and second limiting blocks, and the piston rod of the limiting cylinder passes through the through hole in the second limiting block to clamp the workpiece in conjunction with the first limiting block. This utility model enables simultaneous laser marking and workpiece detection, preventing defective products from being shipped out.

The invention discloses a construction device and method for a floor conveying opening. The device comprises an outer sleeve, an inner supporting cylinder, an upper wood ring, a middle partition block and a lower partition ring. All the surfaces of the periphery of the outer sleeve are provided with quick-easy closing-up nets which are used as forming surfaces of the material conveying openings and are used for floor reinforcing steel bars to extend into to form reserved reinforcing steel bars; the inner supporting cylinder is used for directly abutting against the reserved steel bars and indirectly providing inner supporting for all the faces of the periphery of the outer sleeve in the installation process. The upper wood ring is used for being clamped at the upper end of the outer sleeve through the tongue-and-groove in the installation process, transferring inner supporting force from the upper end of the inner supporting barrel to the upper end of the outer sleeve and forming an installation point for a temporary sealing cover of the material conveying opening. The middle partition block is used for transmitting inner supporting force from the middle of the inner supporting cylinder to the middle of the outer sleeve during installation. The lower distance ring is used for transmitting inner supporting force from the lower end of the inner supporting cylinder to the lower end of the outer sleeve during installation. According to the device, the chiseling procedure is avoided, the labor cost is greatly reduced, the material conveying opening can be temporarily closed and protected without damaging a floor slab, enough inner support can be provided, and slurry leakage is avoided.

A combined Chinese yam tuber growth groove arranged in a trench belongs to agricultural planting appliances, the Chinese yam tuber growth groove comprises a combination part, a space part and a base, the combination part is used for overlapping an upper Chinese yam tuber growth groove and a lower Chinese yam tuber growth groove, and the Chinese yam tuber growth grooves are combined to form a Chinese yam tuber growth space. According to the Chinese yam tuber growing device, Chinese yam tubers are separated from soil, occurrence of soil infectious diseases is avoided, growth resistance of the Chinese yam tubers is reduced, and the Chinese yam tuber growing device has the advantages that the Chinese yam tuber growing device is simple in structure, convenient to use and high in yield, and the yield of the Chinese yam tubers is increased. Chinese yam tubers grow in the shallow soil layer, the planting density is increased, the tower furrow phenomenon is avoided, the yield and quality of Chinese yams are improved, the plot planting limitation is overcome, the planting range is expanded, mechanical planting is achieved, and the income of farmers is increased.

This utility model provides a battery, a battery pack, and a battery device. The battery includes a shell, a cover plate, terminals, and an insulating component. The cover plate covers the opening of the shell to form the outer shell of the battery, and has mounting holes. The terminals pass through the mounting holes, with their end faces exposed. The insulating component is located between the outer periphery of the terminals and the inner edge of the mounting holes, providing insulation for the terminals and the cover plate. The end faces form welding positions for busbar welding. Since the minimum distance d1 between the insulating components and the heat deformation temperature k of the insulating components satisfy 300 mm·℃ ≤ d1*k ≤ 1900 mm·℃, the welding position area and weld length can be guaranteed, ensuring the current carrying capacity of the terminals and busbars, while preventing the insulating components from melting under the residual heat of welding, thereby ensuring the insulation performance of the insulating components.

The utility model provides a cylindrical battery shell bottom welding mark structure and a cylindrical secondary battery. The cylindrical battery shell bottom welding mark structure comprises a shell bottom and a welding mark positioned on the shell bottom, the welding track of the shell bottom and the negative collector plate is the welding mark; the welding mark is in a vortex line shape, the center point of the welding mark is a point O, the vertex angle, away from the point O, of the outer end of the welding mark is a point A, the vertex angle, close to the point O, of the inner end of the welding mark is a point B, the area of a circle which takes the point O as the circle center and passes through the point A is S11, the area of a circle which takes the point O as the circle center and passes through the point B is S12, the area of a radiation surface of the welding mark is S10, the area of the shell bottom is S0, and S10 = S11-S12. And S10 is not less than 1.5% S0 and not more than 8.5% S0. According to the utility model, the welding print is arranged to be in the vortex line shape, so that the length of the welding print can be guaranteed, the area of the radiation surface of the welding print can be reduced, and the welding effect can be effectively improved, the safety performance of the battery can be guaranteed and the processing cost of the battery can be reduced by limiting the area of the radiation surface of the welding print.

The present invention belongs to the technical field of rock expansion fracturing equipment, and discloses a new type of longitudinally supported transversely expanded rock cracking pipe, including a liquid storage pipe with a receiving cavity, wherein the new type of longitudinally supported transversely expanded rock cracking pipe also includes a longitudinal cable arranged in the receiving cavity, the two ends of the longitudinal cable are respectively fixed to the two ends of the liquid storage pipe, and the middle part of the longitudinal cable is separated from the inner wall of the liquid storage pipe. Compared with the related art, the present invention improves the structure of the liquid storage pipe, and separates the middle part of the longitudinal cable from the wall of the liquid storage pipe. With this structure, on the one hand, the longitudinal cable will not limit the transverse expansion of the liquid storage pipe, and the liquid storage pipe can expand freely in the transverse direction, thereby ensuring the rock cracking ability of the rock cracking pipe. On the other hand, the longitudinal cable plays a role in supporting the liquid storage pipe. When the liquid storage pipe expands transversely, the longitudinal cable supports the liquid storage pipe, which can limit the shortening of the length of the liquid storage pipe and ensure the effective rock cracking length of the rock cracking pipe.

The improved ABS wheel speed sensor terminal crimping fixed-length cutting equipment comprises a bottom plate, an electric cabinet and a vertical plate, the electric cabinet is fixed to the bottom plate, the vertical plate is fixed to the left side of the upper end face of the bottom plate, a first air cylinder is fixed to the vertical plate, and a movable frame is fixed to the output end of the first air cylinder; a pressing plate with the end of an inclined structure is fixed to the right side of the movable frame. According to the improved ABS wheel speed sensor terminal crimping fixed-length cutting equipment, the automatic butt joint mechanism is adopted and matched with the separation guide mechanism, the automatic matching effect of a wire core and a terminal can be achieved, manual butt joint is not needed, the operation is more convenient and simpler, a linkage limiting mechanism is matched, positioning of a connecting wire can be achieved, the wire core is prevented from moving in the butt joint process, and the production efficiency is improved. And after butt joint is completed, acting force can be provided for the connecting wire through the limiting mechanism, and pulling force can be generated for the wiring terminal and the wire core through resetting of the butt joint mechanism, so that the detection effect is realized, and the stability of the wiring terminal and the wire core after crimping is determined.

The utility model relates to a portable POE (Power Over Ethernet) power supply, which comprises a shell, a POE power supply body arranged in the shell, a rotating shaft arranged in the shell, a winding reel sleeved on the rotating shaft, a clockwork spring arranged between the rotating shaft and the winding reel, a power line wound on the winding reel, baffles arranged at two ends of the winding reel in the axial direction, and a power supply wire wound on the power line. A plurality of sliding rods are arranged on the end face, away from the winding reel, of any baffle, the multiple sliding rods are in sliding connection with one first end face ratchet wheel, each sliding rod is sleeved with a spring located between the corresponding first end face ratchet wheel and the corresponding baffle, and a key column is arranged on the end face, away from the corresponding baffle, of each first end face ratchet wheel. A locking piece for preventing the first end face ratchet wheel from rotating is arranged on the inner side wall, opposite to the end face ratchet wheels, of the shell, the key column is pressed down, the first end face ratchet wheel is separated from the locking piece, the winding reel rotates under the action of the clockwork spring, the power line is automatically wound, and great convenience is achieved.

The utility model discloses a torsion nut with a pushing structure, which comprises a nut body, a split pushing component and a first pressure-bearing gasket, a first internal thread is arranged in the nut body, a plurality of first mounting holes are arranged on the outer wall of the nut body, the axial direction of the first mounting holes is consistent with that of the nut body, and the split pushing component is arranged in the nut body. The split pushing part is mounted in the first mounting hole, and the bottom of the split pushing part extends out of the first mounting hole to abut against the first pressure-bearing gasket; the split pushing part comprises a torsion bolt and a pressure-bearing column, the pressure-bearing column is arranged in the first mounting hole, the torsion bolt is meshed with threads in the first mounting hole, and the torsion bolt extrudes the pressure-bearing column towards the first pressure-bearing gasket; the torsion nut with the pushing structure and the bolt are simple in structure, reliable in connection, excellent in looseness prevention and capable of preventing the torsion bolt from being damaged.

The utility model discloses a long fiber carding device, and relates to the technical field of bast fiber processing equipment. The hemp fiber carding device aims to solve the problems that in the prior art, a traditional hemp fiber carding device adopts a large number of knife rests, fibers are prone to being damaged when cleaned, and the fiber carding effect is not ideal. The fiber carding device comprises an input clamping belt wheel, a clamping belt slide way, a first clamping belt, a reversing belt wheel, a second clamping belt, an output clamping belt wheel and four fiber carding devices arranged in a roller shell. The reversing belt wheel is arranged between the second carding roller and the third carding roller, the input clamping belt wheel is arranged on the outer side of the first carding roller, and the output clamping belt wheel is arranged on the outer side of the fourth carding roller. The bast fiber processing device is used for bast fiber processing.

An electromagnetic flowmeter comprises a shell, two symmetrical electrode holders are arranged on the outer wall of the shell, detection electrodes are fixedly arranged in the electrode holders, and a left half mold and a right half mold are inserted into the two ends of the shell correspondingly; a mold closing seam of the left half mold and the right half mold is located on a plane where the two detection electrodes are located, and grooves are formed in the positions, corresponding to the detection electrodes, of the left half mold and the right half mold; before injection molding is started, the left half mold and the right half mold are closed, the end of the detection electrode is inserted into a hemisphere formed by the two grooves, a material used for forming a lining is injected into an injection molding cavity between the shell and the left half mold and the right half mold, demolding is conducted after cooling, and redundant materials formed at the end of the detection electrode are removed. The electromagnetic flowmeter has the effect of avoiding lining damage caused by punching in the production process of the electromagnetic flowmeter.

The utility model provides a winding assembly convenient to wind a cable, and relates to the technical field of winding assemblys.The winding assembly convenient to wind the cable comprises a machine frame, two rotating shafts are symmetrically and rotationally connected to the machine frame, the opposite ends of the two rotating shafts are connected with a winding drum with the interior being of a hollow structure, and the winding drum is connected with the machine frame. A plurality of groups of guide limiting assemblies are arranged on the winding drum; the two-way lead screw rotates so that the two movable discs can move relatively at the same time and move by the same distance, at the moment, under the action of the movable hinge base and the rotary ejector rod, the winding plate moves in the direction of the hollow guide rod, and the position, around the circle center of the winding drum, of the winding plate can be adjusted; according to the winding assembly, the winding diameter of the winding assembly can be adjusted according to the actual situation during use, hard or soft cables can be wound conveniently, the position of the limiting stop lever can be adjusted, the length of the wound cables can be guaranteed while the cables are prevented from being broken, and the application range of the winding assembly is widened.

The invention relates to the field of automobile parts, and discloses an instrument panel cross beam machining method and an instrument panel cross beam. The instrument panel cross beam machining method adopts an injection molding mode to machine an instrument panel cross beam, and in the injection molding process of the instrument panel cross beam, injection molding is carried out by adopting injection molding parameters of a first injection speed and a first screw rotating speed in a first time period; in the second time period, injection molding parameters of the second injection speed and the second screw rotating speed are adopted for injection molding; wherein the first injection speed is greater than the second injection speed, and the first screw rotation speed is greater than or equal to the second screw rotation speed. Therefore, the distribution of the glass fibers can be optimized only by adjusting the injection molding parameters of the first time period and the second time period, so that the mechanical property of the instrument panel cross beam is improved, and compared with the mode that the content of defects and impurities needs to be accurately controlled in the related technology, the production cost and the production difficulty can be reduced.

The invention discloses a low-cost optical fiber length measuring system and method. The system comprises a first clock crystal oscillator and a second clock crystal oscillator, the first clock crystal oscillator and the second clock crystal oscillator are connected with the central processing unit, the central processing unit carries out pulse driving on the laser driver by referring to the second clock crystal oscillator, and the output end of the laser driver is connected with the input end of the laser diode; the output end of the laser diode is connected with one end of a to-be-measured optical fiber, and the other end of the to-be-measured optical fiber is connected with the receiving end of the photoelectric receiving module; the output end of the photoelectric receiving module is connected with the input end of the analog-to-digital converter, and the output end of the analog-to-digital converter is connected with the central processing unit. The method has the advantages of being high in precision, low in cost, simplified in implementation, high in robustness and the like, can greatly reduce complexity and improve system efficiency, has high expansibility and flexibility, and is suitable for being widely applied to various optical measurement, sensing and communication systems.

The utility model provides a free access type limiting fence which is provided with a fence body, the fence body comprises a rear fence door, a front fence door and a linkage mechanism, the linkage mechanism is provided with a linkage rod, the linkage rod is arranged between the rear fence door and the front fence door, and the rear fence door and the front fence door are both hinged to the linkage rod; the rear fence door is rotatably arranged at the rear end of the fence body, and the front fence door is rotatably arranged at the front end of the fence body; a pig enters from the rear pigsty door and pushes the front pigsty door forwards, the front pigsty door rotates forwards and upwards, and the rear pigsty door is driven to rotate forwards and downwards until the rear pigsty door is closed; the pigs retreat from the pigsty body and push the rear pigsty door backwards, the rear pigsty door rotates towards the upper rear portion, meanwhile, the front pigsty door is driven to rotate towards the lower rear portion, the pigs can retreat from the pigsty body smoothly, and the front pigsty door returns to the pigsty body again. The linkage rod is arranged between the rear fence door and the front fence door, synchronous rotation of the rear fence door and the front fence door can be guaranteed, the distance between the rear fence door and the front fence door is controlled, it is guaranteed that the length between the rear fence door and the front fence door can meet the body type of a pig, and the space in the fence body is fully utilized.

A laundry treating apparatus is configured to reduce a volume independently occupied by a driver that rotates a drum in which laundry is accommodated and a volume of a space defined between a rear surface of the drum and a cabinet rear panel.

The invention belongs to the technical field of aviation sensor design, and discloses an aviation five-level thunder and lightning protection circuit and a temperature and pressure composite sensor, which comprise a thunder and lightning protection circuit board and a power signal processing circuit board which are arranged in a layered manner. Through the thunder and lightning protection circuit and the structural design, the requirement of a five-level indirect thunder and lightning test is met, normal work of the sensor in a severe thunder and lightning environment can be ensured, and the thunder and lightning interference resistance is high.

The invention relates to a device and a method for purifying a DNA-containing sample, the device comprises: a sample chamber used for containing a DNA-containing sample to be treated, a first semipermeable membrane arranged at a first end and a second semipermeable membrane arranged at a second end, the first semipermeable membrane and the second semipermeable membrane being in membrane structures, and the first semipermeable membrane and the second semipermeable membrane being in a direction from the inner side to the outer side of the sample chamber, the first end and the second end can pass through a non-target isolate but cannot pass through a target isolate, an electrophoretic field is formed between the first end and the second end, the target isolate is DNA, and the non-target isolate comprises charged impurities; the first ends of the first liquid storage device and the second liquid storage device are sealed in the first liquid storage device, the second ends of the first liquid storage device and the second liquid storage device are sealed in the second liquid storage device, and the first liquid storage device and the second liquid storage device are used for containing an electrophoretic buffer solution; an electrode on one side of the electrode assembly extends into the first liquid storage device, an electrode on the other side of the electrode assembly extends into the second liquid storage device, a loop is formed, and a sample containing DNA is subjected to electrophoresis. By means of electrophoresis, impurities and DNA are migrated together, the DNA is intercepted through the semi-permeable membrane, the impurities can be removed through the semi-permeable membrane, and the purposes of removing the impurities such as protein and polysaccharide and purifying the DNA are achieved. Due to the fact that a mild impurity removal mode is adopted, operation such as violent vibration is avoided, the possibility that DNA breaks in the purification process is reduced, and the purposes of purifying DNA and keeping the length of the DNA at the same time are achieved.

The utility model relates to the technical field of medical instruments, and discloses a sample adding device for a chemical analyzer, which comprises an injection unit and a movable sampling unit arranged on the side of the injection unit, the injection unit comprises a mounting rack, a cleaning assembly arranged on the mounting rack, a driving module and an injector, a piston rod of an inner cavity of the injector is connected to the output end of the driving module, the movable sampling unit comprises a fixing frame, an up-down moving module arranged in the fixing frame and a sample adding needle, and the sample adding needle is connected to the output end of the up-down moving module through a limiting frame. The up-down moving module drives the sample adding needle to move up and down, one side of the injector is connected with the sample adding needle through a connecting pipeline to realize suction of liquid, and the other side of the injector is connected with the cleaning assembly to realize cleaning.