206results about How to "Easy to blow" patented technology

A sliding gas-tight seal on an access port promotes insufflation of an anatomical space formed in tissue at a surgical site only during insertion of an endoscopic instrument through the access port into the anatomical space, and promotes deflation of the inflated space upon removal of the endoscopic instrument from within the access port. An inflatable balloon disposed about the port near the distal end may be selectively expanded to seal and anchor the access port within an incision through which a surgical procedure with insufflation is to be performed. Multiple resilient seals may be attached to the body of the port, and an auxiliary resilient seal may be inserted within the aperture of a seal attached to the body to accommodate a wide range of endoscopic instruments of various exterior dimensions inserted through the seals.

A molding composition containing the following components:I. from 99.9 to 95 parts by weight of a polyetheramide obtained from 1) a linear aliphatic diamine having from 6 to 12 carbon atoms, 2) a linear aliphatic or aromatic dicarboxylic acid having from 6 to 12 carbon atoms, and 3) a polyetherdiamine having at least 3 carbon atoms per ethereal oxygen atom and having a primary amino group at an end of the chain, andII. from 0.1 to 5 parts by weight of a copolymer which contains from 0.8 to 20% by weight of an anhydride or an epoxide in copolymerized form,wherein the total amount of I. and II. is 100 parts by weight, is suitable for the extrusion of flexible pipes, and also for the production of flexible blow-molded articles.

The invention discloses a combined blowing and drawing kitchen ventilator, which comprises a kitchen ventilator shell and a cooking bench air supplement device. An inner shell is arranged in the kitchen ventilator shell at an interval; a smoke collecting cavity is arranged on an air drawing port of the inner shell; an oil filter screen is arranged in the inner shell on the top part of the smoke collecting cavity; the bottom face and the horizontal face of an oil collecting groove of the oil filter screen are arranged in an inclined way; an oil cup is slidably inserted into one groove on the side face of the smoke collecting cavity; an air outlet is formed in the top part of the kitchen ventilator shell; a smoke exhaust fan is arranged in the kitchen ventilator shell; and air outlet of the smoke exhaust fan communicates with an inlet of an air outlet pipeline penetrating through the air outlet; the cooking bench air supplement device comprises a still pressure box for supporting a gas stove; air curtain vertical pipes are fixed to the left side and the right side of the still pressure box along a vertical direction; the two air curtain vertical pipes respectively communicate with the still pressure box; and a plurality of side clearance air outlets are formed on the top parts of the air curtain vertical pipes. The device can be used for quickly discharging pollutants to outdoor.

The invention discloses an air-cooling refrigerator which comprises a refrigerator body, a door body, an air passage, an evaporator, a water receiving disk, a fan, an air inlet pipe and an air return pipe, wherein the refrigerator body is provided with a refrigerating chamber and a freezing chamber adjacent to the refrigerating chamber; the air passage is formed in the rear wall of the refrigerating chamber; the evaporator is arranged in the air passage and is adjacent to the refrigerating chamber; the water receiving disk is arranged below the evaporator in the air passage and is used for receiving defrosted water flowing down from the evaporator; the fan is arranged in the air passage and is used for blowing and sending cold air towards the refrigerating chamber and the freezing chamber; water vapour obtained by evaporating the defrosted water is blown into the refrigerating chamber by the fan; a first end of the air inlet pipe is communicated with the air passage, and a second end of the air inlet pipe is communicated with the freezing chamber; and a first end of the air return pipe is communicated with the freezing chamber, and a second end of the air return pipe is communicated with the air passage. According to the air-cooling refrigerator disclosed by the embodiment of the invention, the relative humidity in the refrigerating chamber can be improved.

The invention discloses a cleaning device for a numerically controlled machine tool, which comprises a numerically controlled machine tool, a vibrating motor box, a machine base and a slide rail. A numerically controlled machine tool is fixedly installed on the top of the machine tool base, and a control panel is fixedly installed on the outer wall of one end side of the numerically controlled machine tool. A sliding door is slidably installed on the outer wall of the other end of the CNC machine tool, and a processing room is fixed in the middle of the CNC machine tool, and the sliding door is matched with the processing room, and the center of the inner wall on both sides of the processing room is respectively movably installed with a processing tool; The inner walls on both sides of the processing chamber are located on the top of the processing tool and are fixed with a vibrating motor box by screws. The vibrating motor box is fixed with a vibrating motor inside. The present invention cleans the CNC machine tool by using the cleaning method of electromagnet adsorption, avoiding the traditional The damage caused to the mechanical equipment by using the flushing cleaning method, and the invention can clean the equipment when the equipment is working, without affecting the production efficiency of the numerical control machine tool.

The invention discloses a bottle blowing device for a bottle blowing machine. The device comprises a mold frame, a left bottle body mold, a right bottle body mold, a left mold base, a right mold base, a left mold lock plate, a right mold lock plate, and a driving seat. The left and right mold lock plates are vertically and slidably arranged on the mold frame; mold lock blocks at intervals are arranged on the left and the right mold lock plates; the left and right mold seats are provided with embedding holes; the driving seat is driven by a power device; the driving seat is provided with a left mold opening and closing curve groove, a right mold opening and closing curve groove, a left mold lock curve groove and a right mold lock curve groove; the left and right mold seats are respectively provided with a mold opening and closing cooperation part constrained in the left mold opening and closing curve groove, the right mold opening and closing curve groove; and the left and right mold lock plates are respectively provided with a mold lock cooperation part constrained in the left and right mold lock curve grooves. The bottle blowing device uses the driving seat can be realize mold opening and closing and mold locking of the left and right bottle molds at the same time; and the whole bottle blowing action process reduces the number of cylinders, sensors and electromagnetic valves, saves cost, reduces the failure rate and repair, and is also very convenient.

The invention provides environment-friendly intelligent grain flat extruding and impurity removing equipment which comprises a spiral loading machine, a heating cylinder mounting frame, a cereal grainauxiliary heating conveying device, a peeling feeding hopper, a peeling box, a peeling roller, a rotating motor, peeling rubber cushion blocks, supporting frames, a fixing cross rod, a grain vibration separation frame structure, a triangular guiding block, a conveying table and electric rollers. The spiral loading machine is mounted on the lower left portion of the cereal grain auxiliary heatingconveying device. Through arrangement of a ceramic electric heating plate and a heat-insulation shell, the heating effect on cereal grain in a conveying sleeve is advantageously improved, and thus heat is prevented from being outwards diffused; through arrangement of a magnet piece, metal substances in the cereal grain passing through a guiding plate are conveniently sucked advantageously; and through matched arrangement of crushing blades, a connecting shaft and a crushing motor, scraps of the cereal grain are conveniently crushed advantageously, the crushed scraps can serve as animal feed, and then the environment-friendly effect is improved.

The invention discloses a surgical rinsing device for medical general surgery. The device comprises a liquid storage cylinder, a storage box, a power box and a base. Rollers are installed at the fourcorners of the bottom end of the base, the liquid storage cylinder is installed at the top end of the base, a motor is mounted at the top end of the liquid storage cylinder, a dosing opening is formedin the top end of the liquid storage tube on the side of the motor, a single chip microcomputer is installed on one side of the liquid storage cylinder, a stirring shaft is installed at an intermediate position inside the liquid storage cylinder, and the top end of the stirring shaft is connected to an output shaft of the motor through a coupler. As the device is provided with the base and the base is provided with rollers and a push handle, the device can be conveniently moved to the most convenient position for cleaning wound at the time of surgery, and at the same time, the device is provided with a rubber hose to make it easier to align a rinsing head with the wound for cleaning.

The invention discloses a system and method for steel making by spraying limestone powder to the bottom of a converter. The system includes a powder tank truck, a ring-slot valve group, a main blowingvalve group, a powder spray tank and the converter. The feeding end of the powder spray tank is provided with a safety Valve and a pressure relief valve, a fluidizing device is arranged at the lowermiddle part of the powder spray tank, the fluidizing device is connected to the ring-slot valve group through a fluidizing tube, an injector is arranged at the discharging end of the bottom of the powder spray tank, a discharging control valve is arranged between the injector and the powder spray tank, one end of the injector is connected with the main blowing valve group through a main blowing air pipe, and the other end of the injector is connected with a double-layer sleeve-type bottom blowing spray gun installed at the bottom of the converter through a conveying pipe. The passivated limestone powder is sprayed into the converter from the bottom of the converter by means of the double-layer sleeve-type bottom blowing spray gun, the limestone powder spray quantity is adjusted according to the early, medium and later stages of the smelting processe of converter smelting, the direct contact area between limestone and molten steel is greatly increased, the stirring conditions of the converter greatly improved, and the utilization efficiency of the limestone is improved.

The invention discloses a production processing device for automobile parts and relates to the technical field of automobile part production. In order to solve the problems are solved that when existing parts are drilled, sweeps are inconveniently collected, the part processing precision can be influenced accordingly, and cleaning in the later period is inconveniently performed, the following scheme is proposed. The production processing device comprises a mounting plate, a supporting plate is installed at one side of the top of the mounting plate, and a top plate is fixedly connected to the top of the supporting plate; a drilling device is installed at the bottom of the top plate, a collection mechanism is arranged below the drilling device, and the two sides of the collection mechanism are provided with retractable mechanisms which are connected with the drilling device. The production processing device is novel in design and easy to operate, waste is conveniently collected and treated in time, convenience is also provided for continuous collection in the later period, the later cleaning process is shortened, and the device helps to improve the workpiece processing precision andis suitable for market popularization.

Disclosed is a carbon nanotube powder, including a carbon nanotube averagely mixed with a dispersant, wherein the carbon nanotube and the dispersant have a weight ratio of 30:70 to 90:10. The carbon nanotube has a diameter of 10 nm to 100 nm, and a length / diameter ratio of 100:1 to 5000:1. The dispersant is an alternative copolymer, a block copolymer, or a random copolymer polymerized of a solvation segment (A) and a carbon affinity group (B). The carbon nanotube powder can be blended with a thermoplastic material to form a composite, wherein the carbon nanotube and the composite have a weight ratio of 0.5:100 to 50:100.

The invention discloses a blast furnace injection semi-coke additive as well as a preparation method and a use method thereof, and belongs to the technical field of blast furnace coal injection. The additive comprises the following components in percentage by mass: 0.1-0.25% of a grinding aid, 58-80% of a composite waste residue type catalyst, 18-40% of a composite compound type catalyst and 1-4%of a dispersing agent. By adding the additive, the grindability and the ash melting point of semi-coke can be improved, the combustion effect is good, the injection amount of the semi-coke in a blastfurnace is greatly increased, the additive is suitable for large-scale popularization and application of blast furnace injection semi-coke, and a good foundation is laid for finally achieving completereplacement of coal with the semi-coke and achieving coal removal in a blast furnace injection system.

The invention discloses a cloth drying device for spinning, and belongs to the field of spinning drying. The cloth drying device comprises a working box, wherein an inlet is formed in the left side ofthe working box, cloth stretches into the working box from the inlet, one end of the cloth is in lap joint to a driven roller and a driving roller through the position between two sets of rollers, and then the cloth reaches a winding mechanism from an outlet; when the cloth passes through the position between the two sets of rollers, the two sets of rollers extrude each other so as to remove water in the cloth, and the drying efficiency is improved; water drops slide into a collecting mechanism, a first motor is started to rotate the driving roller to drive the cloth to move, an exhaust fan sucks air into a drying box from the outside, the air enters the drying box to be heated by an electric heating wire net, and the heated air passes through an air outlet to uniformly dry the moving cloth; and the cloth moves at a constant speed all the time, the cloth can be uniformly dried, an electric fan on a moving mechanism is started to blow away hot air in the working box, the situation thatthe air volume is excessively concentrated in a certain area is avoided, and the drying efficiency is better.

The invention discloses a safety protective production machine tool facilitating waste recovery and achieving environment friendliness. A placement groove is formed in one end of a machine tool bed, amachine tool cover is installed on the inner wall of the placement groove in a sliding manner, inspection windows are uniformly installed on the outer side of the machine tool cover in an embedded manner, and contact sensors are symmetrically installed at one end of the machine tool cover in an embedded manner. The safety protective production machine tool is scientific and reasonable in structure and safe and convenient to use. By arranging a drive motor, a drive screw, internal thread mounting bases, a sliding mounting plate and cleaning scraping plates, machining scraps can be crushed, collected and stored, the efficiency of scrap collection is improved, and the cleanness of the production machine tool in use is improved. By arranging air cylinders, clamping plates, pressure sensors and the contact sensors, the clamping fastness of workpieces can be monitored and observed, the fastness of workpiece clamping is improved, the safety in the use process of the production machine tool is improved, and the protection performance of staff is improved.

Described is a metal fuse in a semiconductor device that can be readily blown up without compromising device reliability, as well as methods of manufacturing thereof. In one embodiment, a metal fuse structure according to the disclosed principles comprises a semiconductor substrate, and an interconnect layers located on the semiconductor substrate, where the interconnect layer has metal contacts formed through the interconnect layer. In addition, the structure includes a metal fuse formed over the interconnect layer and in electrical contact with the metal contacts. Furthermore, the structure includes a polymeric coating formed over the metal fuse and the interconnect layer, where the polymeric coating is selected to allow radiation to pass therethrough.

The invention relates to a breath training device which is designed for solving the technical problem that an existing similar product is not good enough in exhaling and inhaling structure design. The breath training device comprises a bottle body, a corrugated hose and an air nozzle; a cavity is formed in the bottle body by connecting bottle body shells on the two sides and a film at the bottom, an air hole of the bottle body is provided with an exhaling assembly, and an inhaling assembly is arranged in the bottle body. According to the technical scheme, the exhaling assembly comprises a cover shell, a pointer, a cover plate, a one-way membrane and a seat shell; the one-way membrane is arranged in the seat shell located at the air hole of the bottle body, the pointer is arranged in a fan-shaped air cavity window of the cover shell, an air inlet is formed at the communication position of the air cavity window and the cover shell, and a swaying block is arranged under a positioning hole of the pointer; a main air cavity and a side air cavity are formed in the bottle body, a main channel of the main air cavity is communicated with the main air cavity and a main air hole located in the air hole of the bottle body, and a piston valve is arranged in the main air cavity; a side channel of the side air cavity is communicated with the side air cavity and a side air hole located in the air hole of the bottle body, and a seal cone is arranged in the side air cavity. The breath training device is suitable for being used for rehabilitation training.

A monitor bank consists of test one time programmable memory that is programmed distinctively from functional one time programmable memory in order to determine whether the functional one time programmable memory has or will program successfully. In a specific embodiment, each monitor bank consists of a first eFuse configured to expectedly never blow, a second eFuse configured to expectedly always blow, and at least a third eFuse configured to be more difficult to blow than the first eFuse, but easier to blow than the second eFuse. The method of determining whether functional eFuses have or will be programmed successfully is described: programming a monitor bank; sensing whether the test eFuses have blown; creating a monitor bank bit line blow pattern; determining an anticipated bit line blow pattern; comparing the two patterns; and determining that the functional eFuses will not blow successfully if the patterns do not match.

The invention discloses a drilling and extracting integrated device. The drilling and extracting integrated device comprises a dill pipe, a drill bit and a drilling rig and is characterized in that the drill pipe is a hollow PVC drill pipe, the drill bit is a PVC drill bit, segments of the PVC drill pipe are in butt connection in a sealed mode one by one, and the tail end of the PVC drill pipe is connected to an air extractor in a sealed mode. After work of the drill pipe and the drill bit of the device is finished, the drill pipe and the drill bit are directly left in a dilled hole to serve as a gas extraction pipe, and therefore the device not only is favorable for gas blowing or gas extracting in the hole drilling process but also can better serve as a gas inlet for gas extraction. The drilling and extracting integrated device is easy and convenient to operate, high in efficiency, good in effect and very favorable for being popularized and implemented, and exploiting cost can be reduced, and exploiting speed is not affected.

The invention discloses an intelligent bathroom cabinet with self-drying function, including cabinet, drawers and retainers, the left side of the cabinet body is provided with a cavity, and the upperand lower side surfaces of the cavity are fixed with storage parts, and a partition frame is fixed on the right side of the cavity, the right side of the cabinet body is provided with a reserved cavity, and the lower end surface of the reserved cavity is fixed with a sliding groove, the drawer is fixed in the inside of the storage part, the lower end surface of the cabinet body is screwed with legs, and the right surface of the front end of the cabinet body is provided with a hollow groove, and the upper end of the hollow groove is fixed with a water stopper, and the upper end of the water stopper is provided with a first rotating shaft. The intelligent bathroom cabinet with self-drying function has a drying fan capable of blowing warm air to a placing frame inside and outside the device,accelerating towel drying while preventing excessive water vapor from accumulating inside the device, and playing a better self-drying effect.

The invention relates to a gravity-guided roadside cleaning machine, and belongs to the field of cleaning vehicles. The gravity-guided roadside cleaning machine comprises an inclined base which is provided with a roller, a traction frame, a slide rail, an inclined top plate and a limiting structure, wherein the inclined top plate is provided with a limiting slide block connected to the slide rail,a connecting plate with a Z-shaped plate having a U-shaped plate with a contact roller, and a dust sweeping structure including a first belt wheel, a belt, a second belt wheel, a second rotary shaft,a supporting plate, a circular plate, bristles and a bristle mounting plate, wherein the supporting plate is connected to the inclined top plate provided with the second rotary shaft; the second rotary shaft is provided with the circular plate; the circular plate is provided with the bristle mounting plate; the bristle mounting plate is provided with bristles; the second rotary shaft is providedwith the second belt wheel; the second belt wheel is provided with the belt; the drive motor is provided with the first belt wheel; the first belt wheel is connected to the belt; and the supporting plate is provided with a dust blowing structure. The roadside cleaning machine rotates the bristles for moving along road-tooth side walls to clear the road-tooth side walls, thereby saving time and labor.

The invention discloses a helical feeding mechanism. The helical feeding mechanism comprises a helical feeding machine and a fan, wherein the fan is provided with two blast pipes which are connected with the discharging hole of the helical feeding machine; the air outlets of the two blast pipes are arranged on the outer peripheral side of the discharging hole at an interval of 180 degrees. Compared with the conventional feeding device, the helical feeding mechanism has the advantages that the fan is combined with a helical feeding portion, thereby allowing the feeding amount to be controlled in production at any time according to practical requirements by controlling the supply air rate of the fan; moreover, since helical blades and a smashing tool are arranged inside the helical feeding portion, materials can be conveyed and smashed, air blowing is facilitated, the combustion contact area is enlarged indirectly if the conveyed materials are taken as fuel, the combustion efficiency is increased, and the fuel is saved under the condition of supplying equal heat; furthermore, the oxygen feeding amount can be adjusted in a combustion process by controlling the supply air rate, multiple purposes are achieved at one time, and the helical feeding mechanism is environment-friendly and efficient.

The invention relates to the technical field of chip pre-crystallization equipment, and relates to a polyester chip pre-crystallization system. The polyester chip pre-crystallization system comprisesa crystallization box, a feeding pipe arranged at one end of the crystallization box and a discharging pipe arranged on the lower side of the other end of the crystallization box, and a feeding deviceis arranged in the crystallization box. The polyester chip pre-crystallization system is characterized in that the feeding device comprises a rack arranged in the crystallization box and a conveyer belt which is arranged on the rack and does annular motion, guide rolls are rotatably connected to the two sides of the rack correspondingly, the guide rolls on the two sides are obliquely and downwards arranged towards the sides close to each other, the two sides of the conveyer belt abut against the guide rolls on the two sides to be cocked upwards, and a hot air device used for blowing chips isarranged over the conveyer belt. The polyester chip pre-crystallization system has the following effects that the chips are dried by hot air through clearances among the chips when the chips are turned over, the extrusion force among the chips is small, therefore, the possibility that the chips are adhered after being pressed is reduced, and the product quality is improved.

The invention relates to the technical field of robots, in particular to a multifunctional industrial robot for intelligent manufacturing. The robot comprises a rail car, a scissor lift arranged at the top end of the rail car, a high-precision rotating table arranged at the top end of the scissor lift, a multi-axis blowing mechanism, a multi-axis welding mechanism, a multi-axis polishing mechanismand an industrial camera; the mechanisms are evenly distributed at the working end of the high-precision rotating table in the radial direction; the working end of the multi-axis blowing mechanism comprises a blowing nozzle; the working end of the multi-axis welding mechanism comprises a welding head; the working end of the multi-axis polishing mechanism comprises a flexible abutting wheel whichhas the horizontal axis and can elastically move in the vertical direction and the two side directions; the multi-axis polishing mechanism further comprises a polishing belt arranged on the flexible abutting wheel in a sleeving mode and used for polishing; the working end of the industrial camera obliquely faces the working end of the mechanism and is arranged on the mechanism; and the industrialcamera is electrically connected with a controller. The robot is high in working efficiency and precision.

The invention discloses a device and a method for preparing a fiber reinforced silica sol composite shell through airflow laying. The device comprises a fiber laying chamber, a fiber storage chamber,an air supply unit and a support, wherein the fiber laying chamber is a hollow cube and is composed of four side vertical plates and an upper bottom surface exhaust hole plate and an upper bottom surface exhaust hole plate, and an exhaust hole is formed in the upper bottom surface exhaust hole plate; a rotating shaft used for bearing the shell sample is installed in the fiber laying chamber; the fiber storage chamber is of a hollow inverted quadrangular frustum shape formed by four side plates and a lower bottom surface air inlet plate, a fiber storage rack is arranged in the fiber storage chamber, and airflow guide holes are formed in the fiber storage rack; and the fiber spreading chamber is located right above the fiber storage chamber, the side length of the side vertical plate of thefiber spreading chamber is equal to the side length of the side plate of the fiber storage chamber, and the four side vertical plates and the four side plates are fixedly connected in a one-to-one correspondence manner. According to the device and the method, the fibers can be uniformly distributed in the shell, the fibers can be laid on the shell in a quantitative mode, so that the performance ofthe prepared shell is consistent, and the fiber with the large length-diameter ratio can also be added into the shell.

The invention discloses a straw drying and smashing device. The device comprises an upper cavity (1), a middle cavity (2) and a lower cavity (3) which successively communicate from top to down, wherein a straw feeding drum (4) is arranged at the side of the upper cavity (1) and communicates with the upper cavity (1), and a sealing cover plate (5) is arranged on the straw feeding drum (4); a strawrough cutting assembly is arranged in the middle cavity (2), and a straw smashing assembly is arranged in the lower cavity (3); and jet main pipes (6) are arranged in the upper cavity (1), and one endof each jet main pipe (6) is arranged in the upper cavity (1). The advantages of the device are that the device can overcome the disadvantages in the prior art and the structure design is reasonableand novel.

The invention aims to solve the problems that an existing ball collecting device is likely to become loose, and manual picking takes much effort, and discloses a quick table tennis collecting device used for sports teaching. The quick table tennis collecting device comprises a containing pipe, a pull rod, a cavity, a collection plate, air guide plates, guide pipes and rotating rods. Through grooves are formed in the inner sides of the air guide plates, and air bags corresponding to the through grooves are uniformly installed on the inner side of the containing pipe. Extension type air bags are fixedly installed on the outer sides of the guide pipes respectively, magnetic blocks are fixedly installed on the upper sides of the rotating rods respectively, a sleeve is fixedly installed in the middle of the surface of the containing pipe, rotating blocks are installed between the sleeve and the rotating rods, and rotary shafts are installed between the rotating blocks and the sleeve. Through the attraction of the magnetic blocks, and the extension type air bags are extruded by the rotating rods, so that the air bags are inflated; the distance between the air bags becomes small, so that the resistance to table tennis is increased, and the table tennis is easily and quickly collected; the structure is simple, the design is reasonable, the operation is convenient, and the quick table tennis collecting device is worthy of popularization.

A device for filling processing stations (16) with a pumpable working material guarantees a permanent and sufficient supply of working material to the processing station with the lowest possible expense and greatest possible cleanliness. The device includes a transfer chamber (42) assigned to a central tank (55) for the working material. The transfer chamber (42) is assigned to a processing station (16), in such a way that the working material can be fed at first from the central tank (55) into the transfer chamber (42) and from there to the processing station (16). An arrangement is also provided that includes such a device.

The invention discloses a PCB (printed circuit board) positioning and blowing jig which comprises a base and an air compressor. The PCB positioning and blowing jig is characterized in that a boss is arranged on the base, each rotary retaining plate is arranged at the top of the boss and comprises a retaining strip, a movable shaft sleeve and a positioning shaft, each retaining strip is connected on the corresponding positioning shaft through the corresponding movable shaft sleeve in a sleeved manner and can rotate around the positioning shaft, blowing holes are arranged on a boss area formed by surrounding of the rotary retaining plates, an air inlet is arranged on the side face of the base and connected with an air outlet of a blowing electromagnetic valve, and an air inlet of the blowing electromagnetic valve is connected with the air compressor. By the PCB positioning and blowing jig, the problems that a lot of dust and sweeps can be left on a PCB, using effect of a PCB can be affected, damage to the PCB is caused, service life of the PCB is shortened, and blowing effect is affected due to the fact that the PCB is prone to moving during blowing are solved; the PCB positioning and blowing jig is stable and motionless in processing and capable of quickly removing the dust and the sweeps left on the PCB.

An improved purlin clip has an arm and a leg defining a channel to receive the lower flange of a ceiling purlin. A pin is integrally formed with the lower leg of the clip and extends downwardly. The pin is adapted to penetrate a ceiling membrane. A cap is frictionally fit onto the pin to retain the membrane adjacent the purlin, and to support the membrane, with the insulation blown in between the membrane and the ceiling deck. The pin includes teeth or barbs for retentively engaging the cap.

The invention discloses a laser cutting machine dust suction device and an optimized design method thereof. The dust suction device comprises a blowing device and an air suction device. The blowing device comprises a blower, a blowing pipeline and an air outlet structure, the air outlet structure is composed of a blowing cover, an air outlet pipe and an air pipe joint, multiple sets of blowing inclined holes are formed in the circumference side wall of the air outlet pipe, the air suction device comprises an exhaust fan, a chipping collection box, a dust suction cover and an exhaust pipeline,the exhaust fan, the chipping collection box and the dust suction cover are connected in sequence through the exhaust pipeline, the dust suction cover comprises a dust suction cover body and a dust collection frame connected to an air outlet, the blowing cover is connected to the dust collection frame, the dust collection frame is provided with a gap corresponding to an air outlet of the blowing cover, and the air outlet of the blowing cover is opposite to a dust suction opening of the dust suction cover. The device is simple in structure and good in use effect, through optimized design of theblowing device and the air suction device, the whole dust suction capacity is higher, meanwhile, chippings on the worktable are removed, and manual cost is saved.