163results about How to "Improve production continuity" patented technology

The invention discloses a step type mine quarrying face in-situ ore moving type head section treatment process which comprises the steps that a crawler belt impact type roller crusher is arranged on a mine quarrying face in situ, and the crawler belt impact type roller crusher receives, conveys and crushes in-situ ore mined on the mine quarrying face; each crawler belt moving belt conveyor comprises a movable crawler belt driving base and a conveying belt conveyor body arranged on the crawler belt driving base, and the crawler belt moving belt conveyors are connected end to end to convey materials; the mine quarrying working face comprises a top quarrying working face arranged on the mountain top and a stepped in-mountain quarrying working face arranged on the lower portion of the mountain top. By means of the mountain height difference, the crawler belt moves the belt conveyor, so that conveyed materials roll down from a mine quarrying face towards the mountain or are directly conveyed to the downhill through the long-distance belt conveyor. According to the invention, head section crushing work and quarrying work are combined, intermediate transportation links are reduced, energy consumption is saved, cost is reduced, and flexibility and efficiency are high.

The invention discloses boron-containing high-chromium cast iron and an intermediate frequency furnace for machining, and relates to the technical field of intermediate frequency furnaces. A plurality of air supply holes are evenly formed in the other side of an arc-shaped air box, the air outlet end of an exhaust fan is connected to one ends of two air supply pipes, the other ends of the two air supply pipes are connected with one sides of the two arc-shaped air boxes correspondingly, and a lifting cylinder is installed on the other side of a protective cylinder; the output end of the lifting cylinder is connected with a supporting suspension frame, the top end of the supporting suspension frame is connected with a material storage barrel, and a plurality of air inlet holes are evenly formed in the two sides of the material storage barrel. Filtered waste smoke flows through the air supply pipe, enters the arc-shaped air box and then enters the material storage barrel, and the filtered high-temperature waste smoke dries metal furnace burden in the material storage barrel; heat contained in waste smoke is effectively utilized, furnace charge is added into the storage barrel in advance, the dried furnace charge in the storage barrel can be quickly fed into the smelting furnace during next feeding, the intermediate waiting time is short, and the production efficiency is high.

The utility model discloses a double-layer composite floor extrusion die which comprises an upper die, a middle die and a lower die which are sequentially buckled from top to bottom, and is characterized in that an upper rear die lip is arranged at the front end of the upper die, a lower rear die lip is arranged at the front end of the lower die, and a first clothes hanger type runner is defined by the upper die, the upper rear die lip and the middle die; a second clothes hanger type runner is defined by the middle die, the lower rear die lip and the lower die, the first clothes hanger type runner and the second clothes hanger type runner are respectively provided with an independent feeding port, and the straight section of the first clothes hanger type runner and the straight section of the second clothes hanger type runner are communicated with each other.

The utility model discloses circumferential welding equipment for a battery shell. The circumferential welding equipment comprises a base, a turntable mechanism, a laser welding mechanism and a battery autorotation device, during production, a battery is placed in the battery placement position, the rotary disc driver drives the welding rotary disc to continuously rotate, and when the welding rotary disc drives the battery autorotation device to pass through a welding area, the autorotation driver drives the battery jig to rotate for at least one circle; the welding focus of the laser welding mechanism can adapt to the welding position of the battery shell, peripheral side welding of the battery can be completed, the welding rotary disc does not need to be started and stopped frequently, and therefore the production continuity of the battery shell circumferential welding equipment can be improved, and the production efficiency of the battery shell circumferential welding equipment is improved.

The invention discloses a large-handling-capacity horizontal scraper discharging centrifugal machine and a using method thereof. A driving motor included in the large-handling-capacity horizontal scraper discharging centrifugal machine provides power for the centrifugal machine, and the driving motor comprises a stator and a rotor; the transmission device realizes stable and efficient transmission of power of the driving motor, and adopts a herringbone toothed belt wheel to provide large torque output; the screen basket is used for centrifugally separating materials, and solid-liquid separation of the materials is achieved through centrifugal force generated by rotating the screen basket at a high speed; the scraper adopts a small-lead spiral blade design, and the small-lead spiral blade enables the scraper to scrape materials on the inner wall of the screen basket when the scraper rotates along with the screen basket; a feeding pipe of the feeding system is a circular pipeline, the inlet end of the feeding pipe is connected with the material conveying pipeline, and the outlet end of the feeding pipe is arranged on one side of the screening basket in the tangential direction. According to the centrifugal machine, the problems of processing capacity, transmission stability, feeding mode, maintenance convenience, part protection, environmental adaptability and the like of vertical and horizontal centrifugal machines in the prior art are solved.

The invention discloses a pressure self-adaptive regulation and control system and method for a motor pump set, and particularly relates to the field of general control regulation and control, and the method comprises the steps: collecting multi-dimensional data step by step, synchronously collecting basic data such as a pressure time domain sequence, temperature, vibration and the like and derivative parameters, and carrying out the time sequence synchronization processing to form a unified data matrix; extracting multi-dimensional features, extracting dimensionless core features according to four dimensions such as pressure features, and constructing standardized feature vectors; multi-dimensional feature function construction: respectively constructing four types of functions including pressure characteristics and pump body states based on the features of each dimension, and quantifying the performance of each dimension; deep fusion and decision making are carried out, a comprehensive pressure control index is constructed through dynamic weight and kernel function mapping, a swash plate angle adjusting amount is generated in combination with fuzzy reasoning and converted into a control current, and a pump body is driven to adjust the displacement; meanwhile, a three-level quality judgment standard and an exception handling mechanism are established, and pressure control quality monitoring and fault early warning are achieved; the method improves the voltage control precision and stability, and guarantees the safety of equipment.

The invention relates to the technical field of feeding devices, in particular to an automatic feeding machine for steel pipe laser cutting, which comprises a buffer tank and a conveying frame, a feeding mechanism is mounted on one side of the conveying frame, the feeding mechanism comprises a discharging frame, the upper end of the discharging frame is of an inclined plane design, a blank pipe is arranged at the upper end of the discharging frame, and the upper end of the blank pipe is provided with a feeding mechanism. A feeding mechanism is installed at the upper end of the conveying frame, a plurality of sets of baffles are fixedly connected to the position, close to one side, of the upper end of the conveying frame, a first chain is matched with a feeding hook, a blank pipe can be lifted upwards to be fed and automatically disengaged from a feeding roller to move, and automatic feeding is conducted through the inclined plane design of a discharging frame; the feeding hook can automatically and circularly feed materials, automatic feeding can be continuously carried out, manual intervention is reduced, and the production efficiency is remarkably improved.

The utility model relates to moxa stick processing technical field, concretely is a kind of cutting device for moxa stick processing, including base, fixed mounting is equipped with fixed frame on the base upper surface, work, first moxa stick is placed in the inside of curved groove one of bearing platform surface, before cutting, push cover plate, and the curved block under cover plate slides in curved groove one, moxa stick is pushed to specified cutting position, hand wheel is rotated to drive threaded lead screw rotation, threaded lead screw drives fixed link to move down, using the cooperation of curved groove two and curved groove one, moxa stick is firmly fixed, then, through handle lever, lever drives mandrel and gear rotation, gear engages driven wheel, makes driven wheel rotate, and further drive inclined tooth bar to make inclined motion along the track of sliding slot one, since inclined tooth bar is fixedly connected with cutter bar, and inclined lever is guided by the sliding cooperation of sliding slot two and convex shaft two, cutter bar drives cutting knife to realize up-down cutting action, complete a cutting process, so circulate, realize the continuous accurate cutting of moxa stick.

The preparation method comprises the following steps: S1, pretreating raw materials; s2, cold heading manufacturing; a, blank pre-upsetting; b, preforming a flange surface; c, reducing the diameter of the screw and finishing the head; d, final upsetting and forming; e, auxiliary forming; s3, heat treatment strengthening; s4, thread machining; and S5, surface treatment. According to the automatic spraying device, the spraying heads are arranged between the stations of the cold header, the correlation type photoelectric sensor, the electromagnetic valve, the time relay, the spraying machine and the cold header are linked through the programmable logic controller to achieve full-automatic closed-loop control, manual intervention is not needed, operation errors are avoided, the production continuity is improved, meanwhile, an oil-based lubricant is sprayed to the surface of a blank, and the production efficiency is improved. The cold heading deformation resistance of the titanium alloy blank is reduced, mold blank adhesion is reduced, the screw forming integrity is guaranteed, and cracks and other defects are avoided.

The utility model discloses a paper cup framing system, which relates to the technical field of paper cup framing and comprises a paper cup conveying line used for conveying paper cups and a plastic frame conveying device used for conveying plastic frames, an open-close type interceptor is arranged at the tail end of the paper cup conveying line, and protective plates are arranged on the paper cup conveying line corresponding to two sides of the open-close type interceptor. The opening and closing interceptors are matched with protection plates on the two sides of the paper cup conveying line to position the paper cups; a grabbing device is arranged between the paper cup conveying line and the plastic frame conveying device, the grabbing device grabs paper cups on the paper cup conveying line into plastic frames on the plastic frame conveying device, the grabbing device comprises a collaborative robot, and a clamping jaw used for grabbing the paper cups is arranged at the moving end of the collaborative robot. The paper cup conveying line, the grabbing device and the plastic frame conveying device are matched with one another, so that the paper cups can be automatically and tidily placed in the plastic frames in the storage or transportation operation.

The utility model provides an automatic deburring device for laser cutting of plates, and relates to the technical field of plate machining, the automatic deburring device comprises a rack, a fixing mechanism, two first grinding mechanisms and two second grinding mechanisms, the fixing mechanism, the two first grinding mechanisms and the two second grinding mechanisms are arranged on the rack, a conveying roller set used for conveying the plates is arranged on the rack, and a mounting frame is fixedly arranged at the top of the rack; a laser cutter is arranged on the mounting frame, the fixing mechanism is close to the laser cutter and is used for clamping and fixing a plate, the first grinding mechanism is located at the feeding end of the rack, and the second grinding mechanism is located at the discharging end of the rack; the device integrates the functions of laser cutting, conveying and front, back, left and right four-edge grinding, grinding treatment of all side edges of the plate can be completed without manually overturning the plate, the safety risk is reduced, the labor intensity of operators is reduced, and the working efficiency is improved.

The utility model discloses a sterilization device for sea-buckthorn primary pulp, which comprises a sterilization heating box, two heat insulation plates are welded in the middle of an inner cavity of the sterilization heating box, the inner cavity of the sterilization heating box is divided into three continuous spaces, namely a heating cavity, a connecting cavity and a sterilization cavity, and a spiral heating pipe is fixedly mounted in the heating cavity; and a spiral sterilization pipe is fixedly mounted in the sterilization cavity. According to the utility model, the temperature of primary pulp is raised to 90 DEG C in a short time through the spiral heating pipe, so that the heating efficiency is improved; microorganisms in the primary pulp are fully killed through the spiral sterilization tube, and heat-sensitive nutritional ingredients are prevented from being damaged by high temperature for a long time; rapid cooling of the primary pulp is achieved through the cooling pipe, and secondary damage to nutrition caused by continuous heat action is reduced; the multiple temperature sensors monitor the temperature in the heating, sterilizing and cooling stages in real time, the feeding speed, the water suction pump power, the heater temperature and the semiconductor refrigeration power are dynamically adjusted in combination with the industrial computer, and whole-process precise temperature control is achieved.

A graphitization furnace body filling method comprises the following steps that a cavity at the bottom of a furnace body is filled and compacted with a first layer of first heat preservation materials, crucibles are placed and positioned on the heat preservation materials one by one, gaps in the outer areas of the crucibles are filled and compacted with second heat preservation materials, cavities in the crucibles are filled and compacted with negative electrode carbon black materials, and the graphitization furnace body is formed. A layer of first heat preservation material is flatly laid and compacted on a structural body formed in the step 4 and the step 5, repeated filling is carried out, the operation from the step 3 to the step 6 is repeatedly executed to form a multi-layer graphitized structure, a resistor material barrel is placed and positioned on the first heat preservation material laid on the uppermost layer, and the outer area of the resistor material barrel is filled with the heat preservation material; the resistance material is filled and compacted in an inner cavity of the resistance material barrel, the filling height is limited to be flush with the end of the furnace body, the stage is executed in a circulating mode, and uninterrupted continuous feeding is achieved through material switching through a switching bin replacing mechanism.

The application belongs to the technical field of textiles, and particularly relates to a textile equipment for embedding metal wires and a working method thereof, which comprises a machine body, a winding roller arranged at the middle part of the machine body, a cutting assembly arranged above the machine body, wherein the cutting assembly comprises an upper cutter and a lower cutter which are slidably arranged above the winding roller, the upper surface of the upper cutter is provided with a protective piece which is used for isolating the cutting edge of the upper cutter from the silver-plated wire, one side of the cutting assembly is provided with a clamping assembly, the clamping assembly comprises two positioning clamps which are slidably arranged at one side of the upper cutter, and the two positioning clamps are used for clamping one end of the silver-plated wire which is cut off at the same time, and the problem of rebound of the silver-plated wire after suddenly losing the tension is solved by arranging the cutting assembly and the clamping assembly.

This invention relates to the field of gray cast iron material preparation technology, and particularly to a method for preparing multi-alloy synergistically strengthened gray cast iron, comprising: adding steel raw materials to a smelting apparatus and heating to form molten iron; adding a chromium alloy to the molten iron, heating and holding at that temperature to form a basic mixture; determining the degree of furnace lining peeling based on the vibration frequency of the smelting apparatus, and determining the overheating risk level of the basic mixture based on the degree of furnace lining peeling; determining a target heating temperature based on the overheating risk level; determining the eddy current risk level based on the actual rotation speed; adjusting the stirring intensity during the smelting process based on the eddy current risk level; detecting the mixing ratio of the basic mixture and adjusting the amount of steel raw materials or the chromium alloy added to form a target solution; and simultaneously adding manganese nitride, alloyed tin, and ferrous sulfide to the target solution in a specified ratio to form multi-alloy synergistically strengthened gray cast iron. This invention improves the strength, toughness, fluidity, and resistance to solidification defects of gray cast iron.

The utility model relates to the technical field of blank storage machines, and discloses a blank storage machine of a rock plate manufacturing line, which comprises a support frame, an up-down moving structure is arranged on the inner wall of the support frame, a second conveying belt and a first conveying belt are arranged on the inner wall of the support frame, and a moving platform is arranged on the side wall of the first conveying belt. A storage support is arranged on the side wall of the moving platform, a first supporting plate is fixedly connected to the bottom of the up-down moving structure, and a driving assembly is arranged at the bottom of the first supporting plate. The driving assembly comprises a first hydraulic cylinder, and the top of the first hydraulic cylinder is fixedly connected to the bottom of the first supporting plate. According to the stone blank clamping device, the output end of the first hydraulic cylinder drives the moving blocks to move, the moving blocks drive the connecting rod to rotate, the connecting rod gathers the moving blocks on the other side, and the problems that due to the difference of shapes, sizes or surface textures of stone blanks, clamping is not stable, scraping, fragmentation or edge damage are likely to be caused, and the rejection rate is increased are solved; and the diversity of the blank storage machine of the rock plate manufacturing line is improved.

This utility model discloses a quick-release water atomizing tundish positioning device, relating to the field of metal powder material manufacturing technology. The utility model includes a sealed air inlet cylinder, with a retaining ring and a positioning ring fixedly connected to the top and bottom of the inner cavity of the sealed air inlet cylinder, respectively. This utility model creates a sealed working environment through the sealed air inlet cylinder. Combined with the pores on the surface of the distribution ring, the externally input inert gas is evenly distributed within the sealed space, preventing the molten steel from contacting air before atomization, thus reducing the oxygen content at the source. Simultaneously, the heat-insulating positioning cylinder and the internal insulation material reduce heat loss from the molten steel in the tundish, ensuring the molten steel always maintains good fluidity. Furthermore, through the multiple positioning functions of the retaining ring, positioning ring, positioning frame, and the groove on the top of the heat-insulating positioning cylinder, the tundish is accurately placed, ensuring that the tundish opening and the spray plate remain coaxially aligned, effectively preventing the molten steel from sticking to the spray plate and causing channel blockage, thus preventing abnormal production stoppages.

The utility model relates to the technical field of glue drying, in particular to a waste gas treatment device for glue drying. A waste gas treatment device for glue drying comprises a rack; the conveying device is arranged on the rack and is used for conveying paper; the furnace body shell is positioned above the conveying device and is arranged on the rack; the heating assembly comprises a first heating pipe and a second heating pipe, and the first heating pipe and the second heating pipe are parallel to each other up and down and are arranged in the furnace body shell; and the feeding hole is formed in one side of the furnace body shell. The waste gas treatment device has the beneficial effects that through the reasonable layout of the filtering assembly and the adsorption assembly, the high efficiency of waste gas treatment is ensured, the waste gas is prevented from being gathered in the furnace body, and when the filtering assembly needs to be replaced or cleaned, the maintenance can be completed only by pulling out the furnace cover without disassembling the whole device, so that the downtime is greatly reduced, and the production efficiency is improved. And the production continuity is improved.

The utility model discloses a mold beneficial to product lamination, which relates to the technical field of molds and comprises a main body module and a UV (ultraviolet) glue conveying device positioned on one side of the main body module, the main body module comprises a base and a cabinet body connected to the end face of the base, a workbench is arranged between the base and the cabinet body, a positioning assembly is arranged on the end face of the workbench, and the positioning assembly is used for positioning an assembly with a first component and a second component; a fixing plate is further installed on the end face of the workbench through a guide column, a UV light source is installed at the bottom of the fixing plate, and the UV light source is located over the positioning assembly. The UV glue conveying device comprises a glue storage tank and a conveying pipeline, one end of the conveying pipeline is connected with the glue storage tank, and the other end of the conveying pipeline extends into the cabinet body and corresponds to the assembly body on the positioning assembly; according to the utility model, positioning, glue injection and curing processes are integrated through the integral integrated design, so that the production cycle is shortened, and the production efficiency and the stability are remarkably improved.

The utility model relates to activated carbon processing technical field discloses a kind of efficient energy-saving vertical coal quality activated carbon calcining furnace of multilayer heat insulation structure, comprising: the support seat of supporting main body, the inner wall of the support seat is fixedly connected with combustion furnace, the top of the combustion furnace is fixedly connected with fixed box, the top of the fixed box is fixedly connected with first motor, the drive end of the first motor is fixedly connected with rotating rod and is penetrated through fixed box, the outer wall of the rotating rod is fixedly connected with connecting plate.The utility model in this paper, rotating rod is driven by first motor, rotating rod drives connecting plate, connecting plate rotates, gear and gear ring cooperate to drive rotating shaft, rotating rod and rotating shaft drive stirring plate to stir, then open air heater to make it suck external air and heat, air will enter from air inlet and then be discharged from air outlet, so that each particle or each layer of raw material can receive heat evenly, which helps to improve the stability of calcination effect and product quality.

The utility model relates to a vibration cutter which comprises a driving motor, a gear box assembly fixed below the driving motor and a cutter head assembly arranged below the gear box assembly. The tool bit assembly comprises a tool sleeve, a tool bit connecting piece arranged in the tool sleeve, a magnetic attraction block arranged in a groove of the tool bit connecting piece and a tool bit connected with the magnetic attraction block in a magnetic attraction mode, a positioning hole is formed in a blade clamp of the tool bit, a positioning rod capable of being inserted into the positioning hole is arranged in the groove, and the tool bit extends out of a tool edge at the front end of the tool sleeve. According to the vibration cutter, through the magnetic attraction type connecting technology, rapid installation and accurate positioning of the cutter head assembly are achieved, and the production efficiency and the cutting accuracy are improved. The magnetic connection between the magnetic block and the tool bit ensures the convenience of replacing the tool bit, and meanwhile, the design of the positioning hole and the positioning rod ensures the consistency and accuracy of installing the tool bit every time.

The invention relates to the technical field of potassium phosphate preparation, and discloses an industrial preparation method of instant monopotassium phosphate, which comprises the following steps: transforming idle washing powder production equipment into an equipment system for preparing the instant monopotassium phosphate; preparing a potassium hydroxide solution with the concentration of 20-90% in an alkali dissolving tank; the method comprises the following steps: mixing a phosphoric acid solution with a potassium hydroxide solution for reaction to obtain a neutralization solution, and atomizing the neutralization solution into liquid drops through a pressure atomization system at the upper part of a drying tower. By breaking through waste heat recovery and utilization in industrial production, reform of a production process technology and establishment of an LTE (Long Term Evolution) technology, one-step puffing drying of a neutralization solution obtained by reaction of wet-process phosphoric acid and potassium hydroxide in a powder spraying tower is realized, and hollow, loose and porous KDP201 particles are formed.

The invention relates to material crushing equipment for a PVC drying pipeline. The material crushing equipment comprises a spiral conveyor, a cyclone drying bed, an airflow drying tower, a crusher and an air blower, the cyclone drying bed and the airflow drying tower are sequentially arranged from top to bottom, the upper end of the airflow drying tower is communicated with the cyclone drying bed, and the discharging end of the spiral conveyor is communicated with the middle of the airflow drying tower; an air outlet of the air blower communicates with the middle of the airflow drying tower and is located below the discharging end, and the air blower is used for feeding airflow into the airflow drying tower and is matched with the airflow drying tower to form an airflow conveying channel from bottom to top; the crusher is detachably installed in the airflow drying tower and correspondingly arranged on a material conveying path between the discharging end and the air outlet. According to the material crushing equipment for the PVC drying pipeline, large PVC materials can be crushed in time, the situation that a conveying channel is blocked due to the fact that the large materials fall into the bottom of an airflow drying tower to be stacked is avoided, and production continuity is guaranteed.

This utility model discloses a multifunctional four-sided planer with an adjustable cutter shaft structure, specifically relating to the field of four-sided planing technology. It includes a moving mechanism and a cutter shaft mechanism. The cutter shaft mechanism is installed below the moving mechanism, and the moving mechanism includes an X-axis translation component, a Y-axis translation component, and a vertical movement component. The Y-axis translation component is installed below the X-axis translation component, and the vertical movement component is installed below the Y-axis translation component. Through the cooperation of the moving mechanism and the cutter shaft mechanism, multi-angle adjustment of the cutter shaft is achieved, allowing it to plane wood from different angles. This solves the problems of traditional four-sided planers, which can only process wood in straight lines and cannot process dead angles during planing. Furthermore, the four-sided planer with an adjustable cutter shaft structure allows for customized design and personalized processing of wood by adjusting the angle of the cutter shaft.

This utility model relates to the technical field of gypsum board production equipment, specifically to a rapid adjustment mechanism for inkjet printing position, including a printhead, a three-axis adjustment platform, a detection device, and a control system. The printhead is mounted on the three-axis adjustment platform for inkjet printing on gypsum board. The three-axis adjustment platform includes an X-axis adjustment module extending along the width direction of the gypsum board, a Z-axis adjustment module extending along the thickness direction of the gypsum board, and a Y-axis adjustment module extending along the conveying direction of the gypsum board. The detection device is used to detect the edge position offset and thickness value of the gypsum board. The control system is electrically connected to the detection device and the three-axis adjustment platform, receiving the edge position offset signal and thickness value signal output by the detection device, and controlling the movement of the three-axis adjustment platform according to the signals to adjust the position of the printhead in the X, Y, and Z axis directions. This utility model can adapt to the positional changes of gypsum board of different specifications, meeting the requirements of high-precision inkjet printing.

This utility model discloses a ball valve body punching machine, relating to the field of metal stamping technology. The ball valve body punching machine includes a base, a sliding seat, a top plate, and a punch. Two limiting components are provided on the base. Each limiting component includes a support plate, a first cylinder, a clamping block, and a liner. When the liner is a flat liner, a positioning slider is fixedly installed on the outer wall of the liner. By pushing the push block in the limiting component, the limiting block compresses the return spring, releasing the limiting of the liner, allowing the old liner to be removed. Then, the T-shaped block of the new liner is aligned with the positioning slider and slid into the corresponding slot of the clamping block. After releasing the push block, the return spring causes the limiting block to engage with the first limiting block's sliding groove. Finally, the limiting block is inserted to complete the fixing. This significantly shortens equipment downtime for changeovers, improves production continuity, and effectively increases overall production efficiency.

The utility model discloses a drying application device with a pipeline incrustation cleaning structure, relates to the technical field of drying application, and aims to solve the problems of pipeline blockage and low heat efficiency caused by incrustation accumulation of a closed water circulation system. On the basis of a drying room, a water supplementing tank, a circulating hot water pump, an air energy normal-temperature and high-temperature heat pump unit and other components are arranged, detachable connecting sleeves and connecting pipes are arranged on the outer sides of pipelines such as a main water pipe entering the drying room, cross rods are arranged on the inner sides of the pipelines, and the cross rods are matched with a cleaning device composed of a cleaning wiper and a pull rope. During use, the connecting sleeve and the connecting pipe are disconnected, the pull rope is pulled to enable the cleaning eraser to move in a manner of being attached to the inner wall of the pipeline, and scale can be quickly scraped. According to the device, through a convenient incrustation cleaning structure, corrosion of chemical cleaning to the pipeline is avoided, and the maintenance cost is reduced; pipeline heat transfer performance is recovered, and energy utilization efficiency is improved; the drying room has the advantages of being reasonable in structure and high in practicability.

The present invention relates to a polyamic acid and a polyimide fiber thereof and a preparation method thereof. The polyamic acid has a structure as shown in the following formula 1, wherein Ar is an aromatic residue containing a bridging structure; m is the molar ratio of a repeating unit having a structure of formula 2 in the polyamic acid, and 0.6≤m≤0.9. The polyimide fiber of the present invention has a breaking strength greater than 3.0 GPa, a modulus greater than 100 GPa, and an elongation at break greater than 4%, which solves the problem in the prior art that high-strength and high-model polyimide fibers are relatively brittle during imidization, have a generally low elongation at break, and are not conducive to continuous production and further processing.

This utility model discloses a flour processing feeding device, relating to the field of food processing equipment technology. It includes a feeding hopper with a support frame mounted on it. A stirring frame is rotatably connected inside the feeding hopper. A first servo motor is mounted on the feeding hopper, and its output end is connected to an extension of the stirring frame that passes through the feeding hopper. A cleaning brush is provided on the stirring frame. A feeding pipe is located at the lower end of the feeding hopper, with a uniform feeding component mounted on it. An infrared sensor is installed on the inner wall of the feeding pipe. A vibration motor is mounted on the feeding hopper, and a soft feeding cover is installed on the feeding pipe. This utility model, by setting a uniform feeding component and cooperating with the infrared sensor installed on the inner wall of the feeding pipe, establishes an active and precise feeding control mechanism. The cleaning brush simultaneously performs all-round wiping and cleaning of the inner wall of the feeding hopper, effectively removing attached flour residue.

This utility model proposes a dual-axis pipe cutting machine, including a feeding section and a processing section fixed on the frame. The feeding section includes a rectangular storage bin, a material conveying device, a material conveying chute, a pushing chute, and a pushing device. The material conveying device has a material chain plate with a bending angle of not less than 90°. The outlet of the pushing chute is aligned with the inner cutting shaft of the roll changing and cutting unit in the processing section. The roll changing and cutting unit has a roll changing disc and a power unit that drives the roll changing disc to rotate on both sides of the left side plate of the frame. The roll changing disc has an inner cutting shaft and an outer cutting shaft mounted on two fixed seats. The outer cutting shaft is equipped with a synchronous positioning mechanism on the right side plate of the frame. A cutting mechanism is installed below the outer cutting shaft, and an automatic loading and unloading mechanism is installed below the inner cutting shaft. This utility model improves the fit between the equipment and the material, thereby increasing production efficiency.