133results about How to "Uniform delivery" patented technology

The utility model provides an auxiliary device for installing a pipeline in a narrow space, belongs to the technical field of building construction, and provides the following technical scheme mainly aiming at the problem that the pipeline is difficult to be heated uniformly when the existing water pipeline is heated, softened and butted. Comprising two sets of mounting frames, sliding through grooves are formed in one sides of the two sets of mounting frames, two sets of clamping jaws are slidably mounted in the two sets of sliding through grooves correspondingly, a first mounting groove is formed in the top of one set of clamping jaws, a heater is mounted in the first mounting groove, one side of the heater makes contact with a vapor chamber, and the other side of the heater makes contact with the vapor chamber. By combining the heater with the clamping jaw, the auxiliary device for installing the pipeline in the narrow space can uniformly heat and soften the water pipe, can also adapt to water pipes of different sizes, and solves the problems that when an existing water pipe is heated, it is difficult to ensure that the pipeline is uniformly heated, and the pipeline is not uniform in heating. And construction by operators is not convenient.

The utility model discloses a large-span bridge-floor-free simply-supported tied arch bridge which comprises bridge piers, a first main arch and a second main arch. The first main arch and the second main arch are arranged on the two sides of the arch bridge. The bridge piers are arranged at the two ends of the first main arch and the two ends of the second main arch and connected with the first main arch and the second main arch through supports. The first main arch and the second main arch are each of a four-steel-pipe truss type structure. A first wind brace and a second wind brace are fixedly arranged between the first main arch and the second main arch, straining beams are arranged on the two sides of the arch bridge in the length direction, and a cross beam is arranged between the straining beams on the two sides of the arch bridge and used for bearing a coal conveying pipe belt machine. And suspenders are respectively arranged between the straining beam and the first main arch and between the straining beam and the second main arch. The steel consumption of the large-span arch bridge is reduced, the four-steel-pipe truss type main arch is adopted, the rise of the main arch is reduced, and the transverse stability of the structure is improved; and the suspender tensioning procedure is simplified, and the construction difficulty is reduced.

This utility model relates to the field of spillway tunnel support technology, specifically a reinforcement support device for spillway tunnel excavation. It includes a fixed frame, with lifting blocks bolted to both ends of the fixed frame. A support block is slidably connected to the lower end of each lifting block, and a support base is fixed to the lower end of each support block. Multiple brackets are fixed to the top surface of the lifting blocks. Connecting seats are fixed to the outer ends of the brackets and both ends of the top surface of the fixed frame. Arc-shaped blocks are bolted to the connecting seats. A first pressure-relief block is fixed between two adjacent arc-shaped blocks. A second pressure-relief component is installed at the end of each bracket near the arc-shaped block. A connecting component, including an insert block, is installed on the arc-shaped block. The first pressure-relief block between adjacent arc-shaped blocks and the second pressure-relief component at the end of the bracket undergo controllable limited deformation, absorbing the energy released by the surrounding rock while maintaining stable support for the surrounding rock. This reduces the rigid stress on the structure, decreases brittle failures such as retaining wall cracking, support bending, and joint collapse, and lowers the risk of collapse.

The present application relates to the technical field of archery equipment, and particularly relates to a metal mixed carbon fiber arrow shaft, which comprises a middle carbon fiber pipe, a head stainless steel pipe, a tail metal pipe and a solid connecting piece, the head stainless steel pipe is arranged at the front end of the middle carbon fiber pipe, the tail metal pipe is arranged at the rear end of the middle carbon fiber pipe, and the two are connected and fixed through the solid connecting piece arranged in the middle carbon fiber pipe, and the outside is wrapped with carbon cloth and is formed through high-temperature curing. The present application adopts a segmented metal mixed structure, replaces a long-size metal inner core with a short metal accessory matched with a carbon fiber main pipe, and greatly reduces the difficulty of straightness control. The thickened head stainless steel pipe effectively bears the impact force, the solid connecting piece is in surface contact with the inner wall of the carbon pipe to disperse the stress, and the service life of the arrow shaft is significantly prolonged. The present application has reasonable structure, low cost and high efficiency, and is suitable for manufacturing various archery equipment.

This utility model discloses a fracture-resistant bolt connection pair structure for long-span steel bridges, including a bolt body, an anti-loosening nut assembly, an anti-corrosion washer assembly, a first steel bridge connection plate, and a second steel bridge connection plate. This utility model relates to the field of steel bridge connection structure technology. This fracture-resistant bolt connection pair structure for long-span steel bridges forms a dual stress dispersion structure through a tapered connector between the bolt head and the bolt segment, and four U-shaped stress relief grooves on the bolt segment. This significantly reduces the stress concentration coefficient at the bolt connection, preventing fatigue crack initiation under long-term alternating loads. Simultaneously, the main nut and auxiliary nut, in conjunction with an annular boss, compress the nitrile rubber elastic bushing, continuously compensating for preload attenuation caused by vibration, achieving a preload retention rate of over 90%. This solves the problem of uneven bolt stress caused by loosening of traditional nuts. It ensures the fracture-resistant performance of the bolt connection pair from both "fatigue resistance" and "loosening prevention" dimensions, meeting the core stress requirements of long-span steel bridges.

The utility model belongs to the technical field of hot welding device, specifically disclose a kind of inside hot welding device of hemispherical shell, including work panel, fixed with locating die on work panel, multiple hot welding holes are arranged on the hemispherical locating wall of locating die, locating die is accommodated with the hot riveting piece with vertical movement function, the top of hot riveting piece is respectively equipped with hot riveting head corresponding the position of each hot welding hole, locating die is equipped with the die with vertical movement function directly above, and the pressure column is elastically inserted in the die pressure surface that is hemispherical concave arrangement. The utility model is fixed with locating die on work panel, its hemispherical locating wall is equipped with hot welding hole, for the riveting piece welding leg guidance, locating die has the hot riveting piece that can be vertically moved, top hot riveting head accurately acts on welding leg, directly above has the die that can be vertically moved, and die pressure surface is consistent with shell, cooperate elastic pressure column, realize the high-precision positioning of the riveting piece and shell, uniform stable hot welding and reliable crimping, improve production efficiency, ensure product quality.

The utility model discloses a bamboo shoot bubbling bath boiling device which comprises a bath boiling box, a driving motor is fixedly installed on one side of the top face of the bath boiling box, the output end of the driving motor drives a spiral blade installed in the bath boiling box to rotate through a synchronous belt wheel set, and through holes and installation cavities are formed in the bath boiling box at intervals. A bamboo shoot collecting plate is arranged below the through hole, a blow-off pipe is fixedly mounted on the bottom surface of the bamboo shoot collecting plate, and a bubbling pipe is mounted in the mounting cavity. According to the utility model, the helical blade is arranged in the bath boiling box, under the driving of the driving motor and the synchronous belt wheel group, the helical blade conveys bamboo shoots and moves from the bamboo shoot inlet to the bamboo shoot outlet while the impurities are screened out through the through holes, and in the conveying process, the impurities on the surfaces of the bamboo shoots, such as chippings and soil, are removed through the through holes. The bamboo shoots can fall to the bottom of the bath boiling box through the through holes and then are discharged through the blow-off pipe, efficient impurity screening in the material conveying process is achieved, and the cleanliness of the bamboo shoots is guaranteed.

The utility model discloses a steel pipe pile foundation reinforcing device, including two symmetrical main hoop, and the end face of two main hoop is through bolt penetration, the inclined support is top rotation and is installed in the outside of main hoop, be provided with reinforcing subassembly on main hoop, and this reinforcing subassembly includes: connecting piece, vertical penetration main hoop to be arranged on main hoop equally, reinforcing part, install on connecting piece, and the vertical projection of reinforcing part coincides with the vertical projection of main hoop, in the utility model, the reinforcing subassembly of additional not only has promoted the contact area with steel pipe pile foundation greatly to the effectual enhancement of the support performance of whole, still through more extensive distribution, make the load can be more evenly transmitted, reduced the risk of local stress concentration, and on the inclined support structure, added auxiliary support subassembly, this design not only strengthened the bearing capacity of inclined support itself, more on the whole, promoted the stability of support structure.

The application belongs to the technical field of polymer preparation, and particularly relates to a high-strength self-supporting polypyrrole nano array and a preparation method and application thereof. The preparation method comprises the following steps: (1) first, dispersing a hydroxypropyl-beta-cyclodextrin and polyethylene glycol aqueous solution onto an ice surface, and then adding a pyrrole monomer to form a dispersion liquid; (2) adding an acid solution containing an oxidizing agent to the dispersion liquid, and obtaining the high-strength self-supporting polypyrrole nano array after reaction. The application directly uses a macroscopic ice block as a hard template for polypyrrole preparation, and introduces a cyclic molecule hydroxypropyl-beta-cyclodextrin with hydrophilic and hydrophobic dual functions and polyethylene glycol with a linear polymer chain as an array growth aid, so that a high-strength polypyrrole nano sheet array with a self-supporting structure is prepared through a one-step polymerization method. The high-strength polypyrrole nano sheet array can be used as a conductive filler of polyurethane in the field of 3D printing technology, and greatly improves the mechanical properties and antistatic ability of products.

The utility model discloses a prestressed hollow square pile reinforcing structure, include: pile body, reinforcing component, the reinforcing component includes upper reinforcing block, lower reinforcing block, reinforcing rib, support ring, hanging rod and positioning slot, upper reinforcing block distributes in the upper portion of the inner surface of pile body, and lower reinforcing block distributes in the lower portion of the inner surface of pile body, and support ring is fixedly connected between a plurality of upper reinforcing blocks and a plurality of lower reinforcing blocks respectively, and reinforcing rib is poured and is connected between a plurality of support rings, and hanging rod is fixed in the outer end of reinforcing rib. The utility model discloses being equipped with the reinforcing component, after upper reinforcing block, lower reinforcing block, reinforcing rib and support ring are installed in the inside of pile body, hanging rod is hung in the inside of positioning slot, and top ring is inlaid in the top and bottom of the inner surface of pile body and is clamped with the top of hanging rod through the clamping hole, pours and fills in the inside recess, makes top ring and upper reinforcing block, lower reinforcing block realize fusion between, forms integrated reinforcing structure, and the integrity of the inside of pile body is strengthened.

The utility model relates to the technical field of solar storage battery temperature control, in particular to a solar storage battery sensing temperature control self-heating system which comprises a protection box, a heating load module is arranged in the protection box, a storage battery is placed in the heating load module, and the storage battery is arranged in the protection box. A pulse generation and control module electrically connected with the heating load module is arranged at one end of the outer side wall of the protection box, and a temperature collection and feedback module is arranged in the middle of the side wall of the heating load module. The pulse generation and control module is combined with the PWM controller, so that the dynamic adjustment of the pulse frequency and the duty ratio is realized, the heating power can be accurately controlled according to the real-time temperature feedback, the energy consumption is obviously reduced, and the system adaptability is improved; a grid frame structure consisting of transverse and longitudinal PTC heating sheets is adopted, and a silica gel heat diffusion layer (the heat conductivity coefficient is greater than or equal to 3W / m.K) is combined, so that rapid and uniform transfer of heat is ensured.

The utility model provides a bulldozer drive gear bearing separation tool relates to engineering machinery maintenance tool technical field, it includes roof, jack and connecting rod, jack is movably arranged between bearing and roof for pressing, connecting rod detachably connects roof and drive gear. The roof has an annular mounting hole, the connecting rod passes through the drive gear process hole and the roof mounting hole, and the two ends are provided with stoppers and limit pins and other limit parts. The connecting hole is a long hole, the stopper is a central circular block and is integrally connected with the connecting rod, and the limit pin is L-shaped. The bottom of the jack is provided with a cylindrical wooden block pad, and the center of the roof is provided with a limiting cylinder matched with the telescopic shaft of the jack. The tool solves the problems of difficult operation, easy damage of components and low efficiency in the traditional separation mode, and has the beneficial effects of simple operation, labor intensity reduction, component damage avoidance, efficiency improvement and good universality.

The utility model relates to the field of elevator car handrail structure, relate to a kind of elevator car handrail structure, the utility model includes: handrail main body, two groups of fixed link, inner heating component and outer sheath, the fixed link one side thread connection handrail main body, the fixed link other side fixedly connected car main body, the inner heating component includes annular base core, cage heating wire, connecting socket, wire and power plug, the cavity is equipped in handrail main body inside, the annular base core is set in cavity and is attached to cavity inner wall setting, the cage heating wire is set in annular base core, the connecting socket electrically connected in the head of cage heating wire, the plug electrically plugged in the wire front end is connected with connecting socket, the wire passes through one group of fixed link inside to the outside of car main body and is connected power plug, the outer sheath can be detachably set in the outside of handrail main body, effectively solve the winter handrail ice cold problem, improve the comfort of passenger riding elevator.

The utility model discloses a kind of mould temperature control structures for multilayer cold storage board foaming solidification, belong to cold storage board production field. Including mould assembly, the mould assembly includes four groups of frame plates, four groups of frame plates form frame structure, and the frame structure is equidistantly spaced apart and provided with partition plate, the partition plate is formed by the spacing formed by separating frame structure and forms cooling space, and multiple groups of cooling space are provided with multiple groups of transverse vertical arrangement and set up pipeline;Temperature control component, temperature control component includes the water inlet portion being set in the side of frame plate, and the side of frame plate is provided with drainage portion opposite the water inlet portion. A kind of mould temperature control structures for multilayer cold storage board foaming solidification of the application, cooling space is divided by partition plate, and pipeline with gap in transverse and longitudinal arrangement is matched with temperature control component water inlet portion flow regulation, realize each space temperature control, guarantee that cold storage board core material is uniformly solidified;Mounting bracket is conveniently fixed, and the device of mould and temperature control component composition can be vertically spaced apart arrangement, and it is adapted to multilayer synchronous temperature control.

The invention belongs to the technical field of semiconductor manufacturing, micro electro mechanical systems and precise optical coating, and particularly discloses a method for activating the surface of a substrate in situ in an atomic layer deposition chamber, which comprises the following steps: selecting a donor substrate and a target substrate to be activated; etching the donor substrate to obtain a donor substrate with high-density hydroxyl groups; placing the donor substrate with the high-density hydroxyl groups and a target substrate to be activated in the same atomic layer deposition process chamber; and inert carrier gas is introduced into the atomic layer deposition process chamber, purging process parameters are controlled, and in-situ activation of the target substrate is completed. According to the method for activating the surface of the substrate in situ in the atomic layer deposition chamber, after the surface of the substrate is activated by the method, protective films such as aluminum oxide and the like are subjected to atomic layer deposition, so that the adhesive force and long-term reliability of the protective films on a whole device can be ensured; and interface engineering technical support is provided for manufacturing of high-performance and high-reliability three-dimensional heterogeneous integrated devices and micro-nano sensors.

The utility model relates to the technical field of highway reconstruction, specifically relates to a kind of rigid-flexible fusion asphalt pavement structure for old cement road white plus black reconstruction, from bottom to top include semi-rigid bottom base course, flexible cement concrete base course and asphalt concrete surface course in turn.Rigid-flexible fusion asphalt pavement structure enhances the structural synergy between asphalt surface course and old cement pavement, improves the adaptability to hidden disease of old pavement, improves the service life of road after white plus black reconstruction, and reduces the maintenance cost in later period.

The utility model discloses a power device double-string crimping structure for a converter valve, which relates to the field of flexible direct-current power transmission and comprises an IGBT (insulated gate bipolar transistor) voltage string and a diode voltage string, the IGBT voltage string is composed of a plurality of IGBTs and a first radiator which are stacked in a staggered manner, and the diode voltage string is composed of a plurality of diodes and a second radiator which are stacked in a staggered manner. The IGBT voltage string and the diode voltage string are parallel to each other and are connected through a supporting structural member to form a double-string crimping structure, the second radiator is provided with a protruding structure, the protruding structure is located on the outer side of the bottom of the double-string crimping structure, the first copper bar and the voltage-sharing resistor are installed on the protruding structure, and the second copper bar and the voltage-sharing resistor are installed on the protruding structure. The second copper bar is installed between the first radiator and the second radiator and corresponds to the installation position of the first copper bar, the third copper bar and the laminated busbar are sequentially installed on the side face of the double-string crimping structure in an overlapped mode, the third copper bar corresponds to the installation position of the first copper bar, the pipeline assembly is connected with the adjacent first radiator, and the pipeline assembly is connected with the second radiator. And the adjacent second radiators are connected.

The application discloses a distillation device for camellia oil production, which comprises a heating tank, an oil inlet pipe is communicated with the front surface of the heating tank, and an oil outlet pipe is communicated with the bottom end of the heating tank; camellia oil to be processed is poured into the oil inlet pipe, and camellia oil after distillation is discharged from the oil outlet pipe; supporting legs are fixedly arranged on the bottom end surface of the heating tank and used for supporting; a condensation tower is arranged on the side of the heating tank, a transmission pipe is communicated between the top of the condensation tower and the top end surface of the heating tank; in the application, the rotatable heating assembly arranged in the heating tank can ensure that hot gas and oil liquid are fully contacted, and promotes uniform heat transfer, thereby obviously improving the heating efficiency; meanwhile, the specially designed functional plate rotates on the inner wall of the heating tank, the action drives the synchronous flow of camellia oil around, further strengthens the heating effect, and makes the camellia oil in the whole heating tank be fully heated.

The utility model belongs to the technical field of alkannin extraction, in particular relates to an alkannin extraction system, and aims to solve the problems of low extraction efficiency and unsmooth liquid drainage caused by difficulty in uniformly and circularly spraying layered materials in a temperature-pressure coordinated and controllable closed environment and easiness in blockage of a liquid outlet at the bottom of a tank in the conventional alkannin extraction device. According to the scheme, the extraction device comprises an extraction tank, a storage screen frame, an electric heating wire, a liquid spraying ring and a liquid spraying pipe, the pressure in the tank is adjustable in a stepped mode through a pressurization assembly, and the temperature in the tank is adjustable in a stepped mode through the electric heating wire; the bottom end of the liquid spraying pipe is connected with a pressing sleeve pipe, the tank bottom is connected with an alignment bottom pipe, the pressing sleeve pipe is movably inserted into the alignment bottom pipe, a pipe body of the pressing sleeve pipe is provided with filter screen holes, a pipe body of the alignment bottom pipe is provided with a liquid passing notch, and the positions of the pressing sleeve pipe and the alignment bottom pipe are adjustable. According to the utility model, efficient extraction and convenient cleaning of alkannin are realized through temperature and pressure stepped cooperative control, internal and external dual-circulation spraying and a tank bottom filtering structure capable of switching an extraction mode and a cleaning mode.

This application discloses a trough fermentation system for lignite fermentation, including a fermentation trough and a heating device for heating the fermentation trough. A floor heating coil is installed at the bottom of the fermentation trough. The heating device supplies heat to the fermentation trough through the floor heating coil, providing different amounts of heat to the fermentation trough in the early, middle, and late stages of fermentation, respectively, so that the fermentation trough is in the first, second, and third stages. The gradient temperature control of this application can accurately meet the temperature requirements of different stages in the fermentation process, significantly improving fermentation efficiency, accelerating the fermentation process, significantly shortening the fermentation cycle, and reducing greenhouse gas emissions, thus offering environmental advantages.

The invention relates to the technical field of industrial heating furnaces, and discloses a skid-mounted electric conduction oil boiler which comprises a bottom frame, a first shell is fixedly connected to the top of the bottom frame, a support is fixedly connected to the inner wall of the first shell, and a heating assembly is fixedly connected to the inner wall of the support. The circulation sectional area of an oil way is reduced, heat conduction oil flows through the annular channel closer to the heating pipe in a concentrated mode, and therefore the average heat transfer distance from the surface of the heating pipe to most oil liquid is shortened, and the problems that in traditional large-space heating, due to the fact that the distance between the oil liquid and a heat source is too long, heat resistance is increased, and heating efficiency is low are effectively solved. And meanwhile, the two internal threaded rings are utilized to guide oil liquid to spirally advance, so that a laminar flow boundary layer which is not beneficial to heat transfer is destroyed, an effective path of the oil liquid in a high-temperature heating area is prolonged, the retention time of the oil liquid in the high-temperature heating area is prolonged, and the overall heat efficiency of the heating device is improved.

The utility model discloses a shell pressing tool, and belongs to the technical field of shell pressing tools, the shell pressing tool comprises a base, one side surface of the base is fixedly connected with a placing table, the placing table is provided with a clamping assembly, two sides of the clamping assembly are provided with electronic telescopic rods, and the output ends of the electronic telescopic rods are fixedly connected with non-slip mats; by means of the clamping assembly arranged on the placing table and the electronic telescopic rod and the non-slip mat arranged on the clamping assembly, shell-pressing workpieces of different models can be stably clamped and placed in the pressing process, the workpieces are prevented from falling off, the working efficiency is improved, and the requirements of workers are met. According to the shell pressing device, the distance between the pressing plate and a workpiece to be subjected to shell pressing can be adjusted through the lifting assembly arranged on the fixing frame, so that the workpieces with different heights can be subjected to shell pressing, uniform pressure transmission in the pressing process can be guaranteed through the buffer pad arranged on the pressing plate, damage to the surface of a pressing shell can be avoided, and the practicability of the device is greatly improved.

The utility model discloses a kind of efficient energy-saving electric heating pipes, the device includes: pipe body, the pipe body one end is equipped with end cap, the end cap one end is equipped with two lead wires, the pipe body sequentially includes base layer, oxidation resistance layer, reflective heat insulation layer from inside to outside, the base layer inner wall is equipped with evenly distributed heat dissipation rib. The utility model has the advantages that: pipe body is sequentially set base layer, oxidation resistance layer and reflective heat insulation layer from inside to outside, reflective heat insulation layer is like a layer of "heat shield", can efficiently reflect the heat radiated outward in pipe body interior, heat is "intercepted" in pipe, reduce the dissipation of heat to surrounding environment, so that more heat can be concentrated for heating target object;Base layer inner wall is provided with the heat dissipation rib that is distributed in helical shape, this unique helical structure increases the surface area of base layer inner wall, provides more passageway and contact area for heat transfer, effectively reduces energy consumption, meets the environmental protection requirement of energy saving and emission reduction currently.

The invention relates to the technical field of current transformers, and discloses a current transformer which comprises a shell, a supporting frame and a body, the supporting frame comprises a heat conduction piece and a plurality of heat dissipation strips, the body is fixed to the heat conduction piece, the heat dissipation strips are all arranged on the heat conduction piece, the shell is arranged on the supporting frame in an injection molding mode, and the heat dissipation strips extend to the outer surface of the shell. The body is fixed through the heat conduction part, the heat dissipation strips are arranged on the heat conduction part, and the heat dissipation strips extend to the outer surface of the shell, so that the heat dissipation strips directly penetrate through the shell for heat dissipation treatment, the heat dissipation efficiency of the body is improved, and heat of the body can be quickly and uniformly transmitted to the surface of the shell; the temperature difference between the body and the shell is greatly reduced, so that the temperature difference between the body and the shell can be within the material fatigue limit; and meanwhile, the plurality of heat dissipation strips are thinner relative to the shell, and the heat dissipation strips can generate micro-bending to absorb and disperse deformation caused by thermal expansion, so that the adverse effect of stress concentration is reduced.

The utility model relates to a novel navigation mark buoy's mooring ring mounting structure, including buoy body and mooring ring, buoy body buoy outer wall, top bulkhead, bottom bulkhead and steel baffle, top bulkhead and bottom bulkhead are welded in the upper and lower sides of buoy outer wall respectively, the steel baffle is provided with several and is welded in buoy outer wall, the upper and lower ends of steel baffle are welded on top bulkhead and bottom bulkhead respectively, and the mooring ring is provided with several and is welded on the bottom of bottom bulkhead and steel baffle respectively. The utility model welds the mooring ring at the connecting place of the steel baffle and bottom bulkhead in the buoy, because the steel baffle itself has higher structural strength and penetrates the buoy interior, uses as the welding base of mooring ring, can enhance the bearing capacity of connecting part significantly. The steel baffle plays the role of the reinforcing rib when being stressed, effectively disperses the tensile force, torsional load and impact stress that anchor chain transmits, avoids stress concentration and leads to the weld cracking.

The utility model provides two-stage sterilization equipment for bagged acidic drinks. The equipment comprises a feeding module, an enhanced heat transfer sterilization module and a cooling module which are connected in sequence, the enhanced heat transfer sterilization module comprises a fluid oscillation treatment section, a rapid heating section and a heating maintaining section; the fluid oscillation treatment section comprises a first chamber for accommodating raw materials to be treated and an oscillation element for driving the first chamber to generate mechanical oscillation with preset frequency and amplitude; the rapid heating section comprises a first heat exchange pipe and a first heating channel, the inner wall of the first heat exchange pipe is in a specific geometrical shape, and the specific geometrical shape comprises a continuous corrugated structure extending in the axial direction of the first heat exchange pipe, a spiral groove-shaped structure formed along the inner wall of the first heat exchange pipe and a static mixing structure fixedly arranged in the first heat exchange pipe. And a higher heating rate and more uniform temperature distribution can be realized in the rapid heating section, so that thermosensitive components in the natural acid beverage can be better protected while the sterilization effect is ensured, and the product quality is improved.

The utility model discloses a continuous distillation device in MCPP propionic acid production, which comprises a base as well as a distillation tower and a condensing tower which are arranged on the base, and further comprises a dispersion component which is arranged in the distillation tower and is used for dispersing discharged MCPP propionic acid mixed liquor, and the dispersion component comprises a fixed ring which is fixedly connected to the inner wall of the distillation tower, the fixing ring is located above the tower plate, the side, away from the tower plate, of the fixing ring is connected with a dispersion hollow ring through a positioning assembly, and the ends, close to each other, of the two corrugated pipes are fixedly connected with an L-shaped liquid outlet pipe. According to the utility model, through the arrangement of the dispersing assembly, the MCPP propionic acid mixed solution flows to the tower plate at different positions, so that the discharging uniformity of the MCPP propionic acid mixed solution is improved, and the risk of local accumulation or bias flow on the tower plate due to higher viscosity and single discharging position of the MCPP propionic acid mixed solution is reduced.

This utility model discloses a novel column-type sensor, including a base plate and a sensor body. A balancing base is mounted on the top of the base plate, and the sensor body is mounted on the balancing base. A sensor sealing shell is mounted on the outer side of the middle part of the sensor body, and a protective outer cover is mounted on the outer side of the base plate. The protective outer cover has multiple through holes evenly spaced at the base plate. This utility model provides a double barrier between the sensor sealing shell and the protective outer cover, effectively preventing dust from entering the sensor and affecting measurement accuracy. The multiple through holes evenly spaced at the base plate allow for the dumping of dust without affecting weighing accuracy.

The utility model discloses an induction heating type chip welding device, and relates to the technical field of chip welding. The device comprises a tool jig, wherein the tool jig is fixedly connected with a supporting rod for placing a chip through a placing cavity formed in the tool jig; the welding part comprises two hot-pressing seats, the two hot-pressing seats are symmetrically distributed by taking the tool jig as a center, one end, close to the tool jig, of each hot-pressing seat is fixedly connected with a heat conduction block, and a heat insulation plate is fixedly mounted on the outer surface of each hot-pressing seat. The utility model can effectively solve the problems in the prior art that no definite time sequence control exists in the heating and pressure applying process, the heating block starts to dissipate heat when approaching the chip, so that the welding flux is melted in advance when the pressure is not applied, the welding flux is oxidized, sheetted or bridged, and if the pressure is firstly applied and then the heating is performed, the welding flux cannot be heated. And the problem that the chip packaging material is deformed due to overlong pressure duration time is solved.