775 results about "Waste product" patented technology

The invention discloses a cooling device and glass fiber production equipment, and relates to the technical field of glass fiber production, and the cooling device comprises a spray pipe, an air supply pipeline, a control valve and a control system. Wherein the spray pipe is provided with a plurality of air nozzles distributed at intervals along the longitudinal direction, the plurality of air nozzles are used for spraying air flow towards one side deviating from the bushing so as to form an air vortex capable of reducing the temperature of the bushing and the root of the glass fiber on one side deviating from the bushing of the spray pipe, and the air supply pipeline is connected with the spray pipe and is used for supplying the air flow to the spray pipe; the control valve is arranged on the air supply pipeline and used for controlling the flow of airflow in the air supply pipeline, and the control system is in communication connection with the control valve and used for controlling the opening degree of the control valve according to the wire drawing operation state. The cooling device can stabilize the temperature of the bushing plate when the wire drawing operation is interrupted or the machine head is switched, reduces the number of waste products, and meets the cooling requirement of the bushing plate with high hole number for producing small-diameter fibers, so that the productivity and the economic benefit of a wire drawing operation unit are improved.

The utility model provides a waste rejecting device of packaging bag manufacturing equipment and the packaging bag manufacturing equipment, and the waste rejecting device comprises a plurality of industrial cameras arranged on a rack, and a waste collecting part positioned at the downstream of a plurality of sealing stations along the transportation direction of a transportation assembly, each sealing station is correspondingly provided with at least one industrial camera, and a lens of each industrial camera faces the sealing part of the packaging bag located at the corresponding sealing station, so that an image of the packaging bag at the sealing part can be accurately shot; moreover, the waste collecting part comprises a waste discharge containing cavity communicating with the conveying channel of the conveying assembly and a path switching part movably arranged between the conveying channel and the waste discharge containing cavity, the path switching part communicates with the conveying channel and the waste discharge containing cavity in a switchable mode, and therefore the waste discharge containing cavity can be discharged through the path switching part under guiding of the path switching part. And waste products which do not meet the standard are output to the waste discharge containing cavity, and the yield of each batch of packaging bags produced by the packaging bag manufacturing equipment is increased.

The utility model relates to the technical field of plastic bottle processing, and discloses a plastic bottle processing scraped product crushing and recycling device which comprises a support, a crushing box is fixedly connected to the middle of the support, a supporting plate is fixedly connected to the left side of the exterior of the crushing box, and a crushing assembly is arranged on the upper portion of the supporting plate. A second motor is arranged on the right side of the exterior of the crushing box, a rotating disc is fixedly connected to the output end of the second motor, a mounting rod is fixedly connected to the right side of the exterior of the rotating disc, one end of a connecting rod is rotationally connected to the exterior of the mounting rod, and the other end of the connecting rod penetrates through the interior of the crushing box and is fixedly connected with a screening plate. According to the utility model, crushed waste particles can be conveniently screened, plastic particles with different sizes are discharged from different discharge ports, the plastic particles with different sizes or types are prevented from being mixed together, and the uniformity and consistency of each batch of raw materials can be ensured, so that the quality of final products is improved.

The present disclosure includes a prefabricated wall panel that is made from materials which are otherwise waste products in the agricultural and forestry industry. Each wall panel includes lateral and longitudinal channels with a step in the sidewalls thereof to accommodate installation of various items. Some of the sidewalls may also include an additional step further recessed into the channel to accommodate other items. Regardless of the number channels and steps therein, the wall panels are also devoid of any shear sharp corner, such that a curved section is provided between each transition to allow for easier manufacturing with composite materials.

The invention discloses an injection mold for multicolor injection molding and a production process thereof, a set of machine vision on-line inspection system with pattern detection and surface flatness detection is integrated, pattern detection is performed on a specific part of a formed part A through optical screen detection, horizontal and vertical coordinates of an actual contour are compared with a preset range, and the pattern of the specific part A is detected. Then, the surface flatness of the part is objectively evaluated by analyzing reflected light distribution on the surface of the part, whether a qualified matrix is provided for second injection or not is judged, and key quality attribute judgment on the intermediate product A before second injection is achieved; according to the method, the waste of raw materials, energy and working hours caused by the fact that known waste products continue to be subjected to second injection is effectively prevented, meanwhile, the position precision and visual definition of final multi-color products at the joints of different colors are guaranteed, the defects of boundary line distortion, blooming and the like are overcome, and the production yield and the resource utilization rate are remarkably increased.

The invention discloses an intelligent paid waste recovery system, which relates to the technical field of waste recovery and comprises an intelligent recovery box main body, a central control module, a user interaction module, a settlement module and a user side applet, the intelligent recycling bin main body comprises a single recycling bin door, an independent identification channel, a sorting execution module and a double-category sorting bin body; the double-category sorting cabin body comprises a paper-plastic cabin body and a fabric cabin body, electric sorting gates are arranged at the tops of the paper-plastic cabin body and the fabric cabin body, and weighing settlement units are arranged at the bottoms of the paper-plastic cabin body and the fabric cabin body; a dangerous goods detection module, a delivery quantity limiting module, an overlapping recognition module, an overlapping goods dispersing module and a self-adaptive illumination category recognition module are sequentially integrated in the independent recognition channel in the goods conveying direction; according to the scheme, identification precision fluctuation can be improved, and a stable and reliable classification effect is formed.

The invention discloses a packaging bag waste discharge system which comprises a waste discharge device and a detection and judgment device which are in communication connection. The waste discharging device comprises a first conveying roller set, a waste discharging unit and a second conveying roller set which are sequentially arranged along the conveying path of the packaging bag, and the waste discharging unit comprises a path switching assembly and a waste collecting assembly. An inlet of the path switching assembly communicates with an outlet of the first conveying roller set, and an outlet of the path switching assembly communicates with an inlet of the waste collecting assembly or an inlet of the second conveying roller set in a switchable mode. The detection and judgment device comprises an information detection unit and an information processing unit, the information processing unit judges whether the packaging bags are waste packaging bags or not according to detection information of the packaging bags, and when the packaging bags calibrated as the waste packaging bags are conveyed to the waste discharging unit along the conveying path, an outlet of the path switching assembly communicates with the waste collecting assembly. The waste discharge system can detect the packaging bags one by one in real time and has the advantages of high efficiency and high automation.

The invention relates to the technical field of injection molding, and discloses a high-precision adjustment dust collector injection molding part body injection molding process which comprises the following steps: before a melt enters a mold cavity, obtaining a feed-forward signal representing the physical performance of the melt through an online melt quality characterization (IMQ) system, and obtaining a feed-forward signal representing the physical performance of the melt based on the feed-forward signal; a dynamic valve needle fine tuning (DVM) system is used for applying rheological state intervention to the melt about to enter the cavity at a pouring gate; and on the basis of the feedforward signal, a local thermal field on the surface of a mold cavity is instantaneously and dynamically regulated and controlled through a dynamic energy field (AZT) active cavity system. By arranging the online melt mass characterization (IMQ) system, a feed-forward signal of performance fluctuation of the melt is obtained before the melt enters a cavity, the problem of continuous waste caused by adjustment lag in a traditional process is fundamentally solved, and high stability and process consistency of a dust collector injection molding part body in the continuous production process are ensured.

The utility model relates to a cork base injection mold for oblique ejection demolding, and belongs to the technical field of injection molds. Comprising a fixed mold plate, a movable mold plate, a foot plate and a bottom plate, a sliding groove is formed in a pitched roof block, an ejector pin capable of extending out of the outer side wall of the pitched roof block is arranged in the sliding groove, an abutting portion is arranged at the end, close to the inner side of the sliding groove, of the ejector pin, a chute is formed in the movable mold plate and is of a structure with the narrow upper portion and the wide lower portion, and the end of the abutting portion penetrates out of the sliding groove and abuts against the inner wall of the chute. A reset spring is arranged on the outer side of the ejector pin, and the two ends of the reset spring abut against the end of the sliding groove and one side of the abutting part respectively. According to the scheme, the ejector pin in the sliding groove obliquely moves upwards along with the sliding groove, when the ejector pin moves, the end, provided with the abutting part, of the ejector pin abuts against the inner wall of the inclined groove, the ejector pin can be gradually ejected out towards one side of the side cavity, a buckle formed in the side cavity is demolded from the inclined sliding block, the buckle cannot be pulled in the process that the inclined sliding block continues to be ejected out, and therefore the buckle cannot be damaged. And the situation that waste products appear in the production process is avoided.

The utility model relates to the technical field of plastic waste treatment, in particular to a device for separating plastic products from waste. Comprising a crushing box, a crushing assembly and an auxiliary assembly, the auxiliary assembly comprises a screening box, a sealing plate, a mounting frame, a screen, a water tank, a fluted disc frame, a filtering cover, a positioning plate, a waterproof motor, a driving gear, a transverse plate, a magnetic rod and a vibration component, and after plastic is crushed through the crushing assembly and screened through the screen, plastic particles capable of passing through the screen fall into the filtering cover; furthermore, a waterproof motor is controlled to act, a driving gear is driven to rotate, finally, a fluted disc frame rotates, a filtering cover can rotate, after rotation, clean water is sprayed into the filtering cover through a water spraying pipe, then the plastic part can be cleaned, and finally sewage is discharged by opening a discharging valve on a water tank. And therefore, the problem that secondary utilization of the plastic waste is affected due to the fact that silt on the surface of the plastic waste cannot be removed after the plastic waste is crushed and screened by an existing device can be solved.

The utility model discloses an anti-deformation bearing thin-wall part machining supporting and fixing structure which comprises a base and a supporting assembly, a machining table is connected to the top of the base, clamping blocks are arranged on the two sides of the top of the machining table, and the supporting assembly is arranged in the machining table and comprises a bevel gear ring and a plurality of bevel gears meshed with the bevel gear ring. A lead screw is arranged in the machining table through a plurality of rotating frames, the surface of the lead screw is in transmission connection with a supporting plate through a lead screw nut, the supporting and fixing structure is provided with a supporting assembly, a driving motor drives a bevel gear ring to rotate, a plurality of bevel gears rotate synchronously, then the lead screw is driven to rotate, and the supporting plate ascends to support the interior of the thin-wall part; by means of the internal supporting mode, pressure and friction force borne by the inner wall of the thin-wall part during polishing can be effectively dispersed, deformation caused by lack of supporting is avoided, the size precision, the shape precision and the surface quality of the bearing thin-wall part are guaranteed, the product percent of pass is increased, and waste products are reduced.

The utility model discloses an automobile seat sliding rail support stamping progressive die, and belongs to the field of stamping dies. The stamping progressive die comprises a fixed die and a movable die arranged on the fixed die; material fixing structures are symmetrically arranged at one end, close to the fixed mold, of the movable mold; the fixing seat is fixedly connected with one end, close to the fixed mold, of the guide rod; the roller rod is rotationally mounted on the fixing seat; the fastening spring is arranged on the guide rod in a sleeving manner and corresponds to a position between the fixing seat and the movable mold; and the baffle plate is fixedly connected to one end, far away from the fixing seat, of the guide rod. The blank is stably positioned through the material fixing structure, displacement of the blank in the stamping process is effectively prevented, and therefore the size precision and the shape consistency of stamped parts are improved. Stamping waste products caused by blank displacement are reduced, and the production cost is reduced. And as the shutdown adjustment time required by waste products is reduced, the overall production efficiency is remarkably improved. The design of the roller rod avoids the problem that the surface of the blank is scratched, and the blank quality is protected.

The invention discloses a meter weight control device and method for a cable crosslinking procedure, and belongs to the technical field of cable manufacturing, the meter weight control device comprises an extruder and a weighing unit, the extruder adopts a three-layer co-extrusion system and comprises a feeding device, a traction device and an extrusion device, and the meter weight control device further comprises a speed detection unit, a calculation unit and a control unit. The speed detection unit can detect the production line traction speed of the extruder, and the calculation unit can receive a speed signal and calculate a real-time meter weight value and an actual glue thickness value; the control unit controls the working parameters of the extruder according to the comparison between the data calculated by the calculation unit and the set data; the weighing unit, the speed detection unit, the calculation unit and the control unit work cooperatively to control the weight per meter of the extruder. According to the invention, the weighing unit is arranged, and the weight of the extruded material entering the extruder is adjusted through the cooperation of the speed detection unit, the calculation unit and the control unit. The situation that the thickness exceeds the standard can be avoided, and trial production and starting waste products are remarkably reduced.

The invention relates to a method for producing a workpiece (10) having a chamfer (20), in which a good part (18) is separated from a scrap skeleton (14) by cutting a blank (16) using at least one laser beam, the good part (18) is cut into a waste part (12) and into the workpiece (10) by means of the laser beam for production of the workpiece (10), whereby the chamfer (20) is formed, wherein, before complete separation from the workpiece (10), the waste part (12) is secured (24) to the workpiece (10) and / or the scrap skeleton (14), in a region that is already separated from the workpiece, by means of at least one welded joint (24).

The utility model relates to the technical field of plywood production, and discloses a plywood surface defect detection device which comprises a plate conveying mechanism, a defect detection mechanism is arranged on the plate conveying mechanism, and a sorting mechanism used for sorting qualified products and unqualified products is arranged at the sending-out end of the plate conveying mechanism. The classification mechanism comprises a front turnover conveyor, a rear turnover conveyor and a double-layer conveyor arranged between the front turnover conveyor and the rear turnover conveyor, the upper layer is an unqualified product conveyor, and the lower layer is a qualified product conveyor; the front turnover conveyor and the rear turnover conveyor can rotate to be connected with the qualified product conveyor and the unqualified product conveyor respectively, a waste product frame is arranged on one side of the unqualified product conveyor, and a material pushing mechanism for pushing waste products out of the unqualified product conveyor is arranged on the other side of the unqualified product conveyor. According to the device, qualified products and unqualified products can be classified conveniently, the unqualified products can be continuously conveyed to the next stage for operation after being confirmed and repaired, and waste products which cannot be repaired are collected on the waste product frame.

The invention provides a data analysis method and system, and the method comprises the steps: obtaining finished product quality inspection data and a production log in a preset time period, dividing qualified products into indirect qualified products and direct qualified products according to the finished product quality inspection data and the production log, and calculating a first-pass yield and a quality hidden danger score; extracting a key parameter set by adopting a mode of combining a dynamic sliding window and unsupervised feature selection based on the whole-flow process parameters of the preset time period; performing parameter abnormality judgment on the key parameter set of the indirect qualified product and the waste product, and mining an abnormal parameter combination by adopting a mode mining algorithm to obtain an operation problem item; and constructing a cause analysis table according to the first-pass yield, the classification information, the potential quality hazard score and the operation problem item of the finished product. According to the method and the device, the screening efficiency and accuracy of the key parameters are improved, and fine identification of potential quality hazards, accurate identification of operation problem items and visual display of process quality analysis are realized.

The invention belongs to the technical field of aluminum wheel production quality inspection, and provides an aluminum wheel quality index intelligent management method and system and a storage medium, based on real-time data acquisition and field intelligent terminal manual data filling and reporting, the rate of finished products, the rework rate, the number of waste products and other data of each process are calculated, and through a preset threshold value and color marking, the quality index of the aluminum wheel is obtained. According to the method, the index state is fed back in real time, multi-dimensional visual analysis of data is realized through dynamic graph display and data drilling, response adjustment of an optimal process is carried out on a production machine in combination with an analysis result and processing suggestions, performance appraisal of field production personnel is associated based on each shift quality index, and the enthusiasm of the field production personnel is aroused. AI modeling is formed through data accumulation to gradually improve a quality index management system, the method is suitable for multi-link production scenes such as casting, machining and coating in the aluminum wheel manufacturing process, the stability of the production quality of aluminum wheel products is improved, and the quality abnormity response time is shortened.

The invention provides a float glass product quality optimization method and system, a medium and a product, and relates to the technical field of automatic control. Comprising the following steps: comparing a real-time transverse thickness distribution curve with a standard datum line to screen abnormal areas; tracing and positioning a target thermal control partition and a component according to the pulling speed; generating a mechanical stretching and temperature adjusting instruction based on the thickness out-of-tolerance quantity; when the temperature of the tin liquid does not reach the standard, mechanical stretching is executed, and temperature is increased synchronously; in the process, the difference value between the stretching speed and the glass flow speed is dynamically adjusted according to the temperature closeness degree until the temperature reaches the standard, and synchronous operation of the edge roller is recovered. According to the process, a non-response dead zone in a traditional single temperature control mode is eliminated, a long-distance waste strip generated by waiting for temperature rise is avoided, and the extremely short-term response speed and the long-term steady-state control precision in the float glass forming process are improved.

An automatic machining production line for a knife handle comprises a first numerical control machine tool, a second numerical control machine tool, a third numerical control machine tool, blind rivet loading and unloading equipment and a mechanical arm, the first numerical control machine tool is used for machining the end face, an inner hole, an outer circle face and a V-shaped groove of the knife handle, and the second numerical control machine tool is used for machining a conical hole and an inner threaded hole of the knife handle. The third numerical control machine tool is used for machining a driving groove, a locking threaded hole and an end face inner hole of the cutter handle, the blind rivet assembling and disassembling device is used for assembling or disassembling a blind rivet on the cutter handle, and the mechanical arm is used for grabbing the cutter handle. And waste products generated in production and processing can be detected.

The invention provides normal-pressure sintered silicon carbide ceramic and a preparation method thereof. The normal-pressure sintered silicon carbide ceramic is prepared from the following raw materials in percentage by weight: 40 to 90 percent of silicon carbide micro powder, 5 to 60 percent of quartz powder, 2 to 10 percent of graphite powder, 2 to 20 percent of phenolic resin solution, 40 to 60 percent of absolute ethyl alcohol solution and 0.5 to 2 percent of oleic acid. The preparation method comprises the following steps: stirring, grinding, dispersing, granulating and carrying out dry pressing to obtain a product, putting the pressed and molded product into a vacuum furnace, pre-sintering at 1200 DEG C, putting the pre-sintered product into a vacuum furnace into which argon is introduced, and carrying out high-temperature sintering to obtain the high-purity silicon carbide sintered body. The normal-pressure sintered silicon carbide ceramic produced by the method is stable and reliable in product quality, the shrinkage distortion is less than 18%, the porosity is less than 1%, the qualified rate of the product can reach more than 95%, a siliconizing process is canceled, waste products are greatly reduced, the production operation environment is improved, pollution is completely eradicated, and the occupational health of production operation personnel is ensured.

The invention relates to a control method for improving the wedge shape of an intermediate billet by a roughing mill. The control method comprises the step of distinguishing slabs tapped from different heating furnaces. And the plate blanks discharged from the same heating furnace are implemented according to the same set of roll gap lifting or pressing adjustment strategy. And adjusting parameters are set for each pass of the roughing mill unit. And rough rolling adjustment setting is conducted according to a finished product wedge-shaped index feedback result produced by the finishing mill, and automatic setting output is achieved. And the adjustment amount set by the R1 is distributed to each pass of each rough rolling rack according to the proportion. And R2, performing lifting or pressing adjustment on the three passes according to the calculated wedge-shaped data of the three sections divided by the finish rolling outlet strip steel. According to the method, the wedge size control precision of the hot-rolled intermediate billet can be effectively improved, so that the thickness, convexity, wedge shape and straightness of a final hot-rolled finished product meet precision requirements, and meanwhile, process waste products or head and tail rolling breakage caused by the fact that a finishing mill group cannot normally penetrate due to camber of the head of the intermediate billet are avoided.

The utility model belongs to the technical field of transformer substation waste recycling, and particularly relates to a transformer substation civil engineering waste recycling device based on low-carbon construction, which comprises a base, a plurality of treatment boxes distributed at intervals are fixedly mounted on the upper surface of the base, a conveying frame obliquely extending towards the top of a feed port is arranged on one side of each treatment box, and a compression mechanism is arranged on the upper surface of the base; by arranging the compression mechanism, crushed waste materials can be extruded into blocks, the size of the waste materials is reduced, automatic conveying, crushing, compression and returning of the waste materials are achieved, centralized treatment is facilitated, and follow-up recycling and transportation are facilitated; materials such as waste plastics, waste metals and waste paper generated in the civil construction process of the transformer substation can be classified and treated, the recycled waste materials can be compressed, recycling of the waste materials can be achieved, and the beneficial effects that resource classification and recycling are achieved, the automation degree is high, and the waste treatment efficiency is high are achieved.

The invention relates to the technical field of hot-rolled strip steel production, in particular to a method for automatically controlling the pressure balance of a coiler in-place system, which comprises the following steps: after strip steel enters finish rolling, a coiler guide ruler performs final opening degree setting, the strip steel enters a guide ruler control area, double-side guide rulers perform short-stroke clamping, and after a position control side is in place, position setting is kept unchanged. The strip steel is clamped in a position control mode, the pressure setting is kept unchanged after the pressure control side is in place, the strip steel is clamped in a pressure control mode, the stress of a guide ruler body exceeds the limit a * F of an adjustment starting control point, and the value of a safety coefficient is 0.85-0.95; reducing the pressure setting of the pressure control side according to the deviation proportion, controlling the transverse position fluctuation of the strip steel in the guide ruler area to be 5-10mm, setting a pressure adjustment starting initial point, and setting the adjustment limit of the pressure control side; the strip steel can stably enter the coiling machine for production, the coiling quality is good, waste products and residual materials are reduced, and the yield is increased.

The invention relates to the technical field of industrial machine tools, discloses an integrated quartz tube processing machine tool based on flexible traction, and aims at solving the problems that when a centerless grinding machine supports a quartz tube through line contact, due to the fact that the surface of a workpiece protrudes abnormally, limiting is poor, movement is prone to occurring, and the processing quality is affected. A guide wheel and a polishing wheel are arranged at the top; an arc-shaped opening is formed in the guide wheel, a flexible traction assembly is arranged in the guide wheel, the guide wheel comprises a flexible conveying belt, two groups of symmetrical limiting assemblies are arranged in the guide wheel and are supported from the inner wall of the flexible conveying belt, so that a semi-wrapped quartz tube workpiece is in surface contact, and a yielding assembly is arranged at the end part of each limiting assembly and comprises a telescopic inner column, an outer cylinder and a proximity sensor; according to the machine tool, the supporting area is enlarged through surface contact, the stability is improved through local yielding of the limiting assembly, targeted polishing and automatic reset of protrusions are achieved in combination with the proximity sensor, the machining precision and smoothness of quartz tubes are improved, the cracking risk and the rejection rate are reduced, and the production efficiency is optimized.

The present invention relates to the technical field of pet cans, and more specifically, to a pet feeder comprising a housing, a feeding port provided on the housing, a hopper, a waste storage bin, and a conveyor assembly within the housing, the hopper containing cans, and a can discharge port provided on the hopper. When the conveyor assembly rotates forward, it conveys cans dropped from the can discharge port to the feeding port and opens the cans at the feeding port via a lid opening device. When the conveyor assembly rotates backward, it conveys empty cans in the feeding port to the waste storage bin. This arrangement allows for automated mechanical processing of cans from discharge to recovery, forming a production line that operates in a cycle, replacing manual labor for opening and feeding pet cans, saving labor and providing greater convenience.

This invention discloses a method for producing 58-ton large flat steel ingots by die casting. The method includes determining the casting superheat after steel refining, determining the casting nozzle diameter, controlling the casting speed, covering the ingot mold with an insulation cover, and determining the demolding and slow cooling times for stacking. The appropriate casting superheat is determined based on the amount of molten steel, ladle condition, refining time, and ingot shape. The casting time for the ingot body and nozzle is controlled according to the nozzle size. An insulation cover is placed over the ingot mold within 30 minutes of casting completion. The demolding and slow cooling times for stacking are determined based on the ingot shape. This method is simple and easy to implement, improving the internal quality of the ingot, reducing defects such as porosity and shrinkage cavities at the ingot head, and preventing surface cracks, thus reducing unplanned scrap caused by cracks in the 58-ton large flat steel ingot.

The invention discloses a cutting device for plastic processing, and relates to the technical field of plastic cutting. The invention includes. The device has the advantages that the high-efficiency cutting, compacting and sewage discharge weight reduction processes of plastic waste can be realized by adopting single-drive equipment, the overall manufacturing cost is lower, the cutting efficiency can be effectively improved by adopting a symmetrical opposite cutting mode, the size of plastic fragments is reduced, and the plastic waste is more convenient to transport.

The utility model discloses a polytetrafluoroethylene particle recovery device, which relates to the field of polytetrafluoroethylene particle recovery, and comprises a recovery device body, a crushing bin is arranged in the recovery device body, a bearing is arranged in the crushing bin, the end part of the bearing is connected with a first motor, the outer wall of the bearing is provided with crushing blades, and the crushing blades are connected with the first motor. A material distributing bin is arranged at the bottom of the smashing bin, a filtering assembly is installed in the material distributing bin, a conveying bin is arranged on one side of the recycling device body, and a conveying assembly is installed in the conveying bin. According to the utility model, the crushing blades in the crushing bin crush polytetrafluoroethylene wastes, and polytetrafluoroethylene blocks which are not crushed into particles slide into the conveying bin through the material conveying inlet pipeline and then are conveyed by the spiral conveyor, so that the polytetrafluoroethylene blocks return to the crushing bin again; and the crushing blades in the crushing bin perform secondary crushing on the polytetrafluoroethylene blocks, so that the polytetrafluoroethylene waste can be fully crushed.

The application relates to the technical field of heat-shrinkable tube extrusion dies, and provides a high-smoothness high-speed heat-shrinkable tube extrusion die, which comprises a die head, a shunt is connected in the die head through a support, a joint is fixedly installed at one end of the die head, a die core is installed on the shunt, a die sleeve is fixedly installed at one end of the die head away from the shunt through a tightening sleeve, first and second heaters for heating are further arranged, and the die core comprises a tapered core rod; it can be understood that the short shaping end of the 1.5mm tungsten steel shaping ring is arranged to quickly release pressure, eliminate defects such as surface drag marks and stress marks, cooperate with the mirror surface level inner hole, the core rod gradual change structure and the 12mm die core shaping end, and the inner and outer wall smoothness of the heat-shrinkable tube is greatly improved; meanwhile, the flow channel is short and the resistance is small, the extrusion speed is increased from the traditional 20 m / min to 40-50 m / min, the production efficiency is obviously improved, the flow rate is stable, the pressure is balanced, the dependence on operation experience is reduced, and the debugging time and the waste product rate are reduced.

The invention relates to an air inlet nozzle for a fan, comprising a fastening part (1) and an annular wall (3) which is connected to the fastening part and on which at least one projecting pressure connection (18) is arranged. In order to be able to provide the pressure connection (18) in a simple and reliable manner and in a cost-effective manner, the pressure connection is formed integrally with the air inlet nozzle. As a result, an additional assembly step for placing the pressure connection (18) can be avoided. The pressure connection (18) is provided directly during the production of the intake nozzle. In this way, production and assembly costs and possible waste products due to the assembly method are avoided. And assembling equipment which can cause the manufacturing of the air inlet nozzle to become expensive is not needed. As the pressure connector (18) is part of the air inlet nozzle, an additional storage position does not need to be reserved for the pressure connector (18).