66 results about "Vertical tube" patented technology

This application relates to a connection structure between the car frame and the car bottom of a backpack frame lifting platform, including a car bottom welding assembly and a lower beam welding assembly. The car bottom welding assembly includes a car bottom plate and several connecting vertical tubes disposed within the car bottom plate. The lower beam welding assembly includes a support frame, lower beam cantilever arms disposed on both sides of the support frame, bottom angle steel disposed on the lower beam cantilever arms, connecting side tubes disposed on both sides of the support frame and connected to the bottom angle steel, and at least one connecting central tube disposed in the middle of the support frame. The connecting central tube, connecting side tubes, and connecting vertical tubes are detachably connected. By setting up the car bottom welding assembly, the lower beam welding assembly, and the detachably connected connecting vertical tubes, connecting side tubes, and connecting central tubes, a split splicing connection between the car frame and the car bottom is achieved, thereby avoiding the wear and damage problems caused by integral structures during transportation, and making installation, maintenance, and parts replacement more convenient, solving the problem of lack of flexibility in the integral connection structure of the prior art.

This invention belongs to the technical field of evaporation separation equipment, and particularly relates to a vertical tube falling film evaporation device with coupled gas-liquid path separation. It includes a vertically arranged shell closed at both ends, with at least one heat exchange tube inside the shell. An upper end cap is connected to the top of the shell, and a lower end cap is connected to the bottom. The lower end cap communicates with the heat exchange tube. A liquid distribution and separation buffer chamber is formed between the upper end cap and the top of the shell, and a liquid distributor communicating with the heat exchange tube is provided inside the chamber. The liquid distributor includes a liquid distributor connecting pipe, the interior of which is an outlet channel. A thickened outer circumferential wall is provided at the top of the heat exchange tube in the lower circumferential direction. Multiple spiral liquid inlet channels are evenly spaced on the outer side of the thickened outer circumferential wall. The top of the channels communicates with the liquid distribution and separation buffer chamber, and the bottom communicates with the heat exchange tube, with the side openings blocked by the inner wall of the heat exchange tube. The material forms a liquid film through the spiral liquid inlet channels. After the heat exchange medium heats the material, the evaporated gas is discharged through the outlet channel, and the concentrated material enters the lower end cap, achieving efficient gas-liquid separation and uniform liquid distribution.

This invention belongs to the field of enameled wire processing technology, specifically relating to an enameled flat wire production apparatus. It includes a housing, inside which a first partition divides the housing into an upper chamber and a lower chamber. A vertical tube is fixed to the first partition, penetrating it. A varnish supply pipe is connected to the side of the vertical tube, extending beyond the housing. When a conductive wire core passes through the vertical tube, a gap exists between the conductive wire core and the inner wall of the vertical tube. A first rubber stopper is provided on the bottom surface of the housing, penetrating the bottom surface and having a first through hole. When a conductive wire core passes through the first rubber stopper, it adheres to the inner wall of the first rubber stopper. A second rubber stopper is provided on the top surface of the housing, penetrating the top surface and having a second through hole. When a conductive wire core passes through the second rubber stopper, it adheres to the inner wall of the second rubber stopper. This enameled flat wire production apparatus offers relatively low production difficulty in producing enameled flat wire.

This utility model discloses a test tube shaking device for geochemical testing, comprising: a U-shaped base with multiple arc-shaped protrusions evenly spaced on its bottom inner wall; a U-shaped support with four rollers rotatably mounted on its rectangular bottom, the rollers making movable contact with the bottom inner wall of the U-shaped base and cooperating with the arc-shaped protrusions; and a test tube insert sealing and positioning anti-detachment plug assembly installed on the U-shaped support. This utility model, through a series of structures, facilitates the safe positioning of multiple test tubes and the simultaneous and safe sealing and anti-detachment of multiple test tube plugs, preventing the test tube plugs from detaching during shaking. It also facilitates single-drive, integrated, bidirectional reciprocating shaking of multiple vertical tubes. Utilizing this bidirectional reciprocating vibration method, it significantly increases the vibration interference of the liquid inside the test tubes, improving the mixing effect and efficiency of the liquid. Combined with the safe sealing and anti-detachment of multiple test tube plugs, it ensures the safety of the shaking operation.

This invention discloses a method for large-size ammonium fluoroborate single crystal vapor phase growth, comprising the following steps: weighing two or more compounds containing NH4, B, O, and F as raw materials in a stoichiometric ratio of 1:4:6:1, mixing them thoroughly, adding a transport agent to obtain an initial mixture, and loading the initial mixture into a crystallization vessel; during the crystal growth stage, seed crystals or suspended seed crystals are selected by geometric selection and temperature screening among the grains; the crystallization vessel is dynamically heated within the temperature gradient zone of a vertical tube furnace, the dynamic heating being achieved by independently raising or lowering the temperatures of the high-temperature and low-temperature zones to dynamically control the temperature gradient of the crystal growth zone, so as to match it with the temperature gradient required at each stage of the crystal growth process; the raw materials crystallize in the crystal growth zone under the transport agent, resulting in large-size ammonium fluoroborate crystals. This invention produces large-size single crystals, is simple to operate, and highly practical, representing a superior ammonium fluoroborate single crystal growth process.

This utility model discloses a chemical alcohol lamp experimental rack, including a base. A placement seat for holding the alcohol lamp is installed on one side of the top of the base. An adjustment mechanism is also installed on one side of the top of the base to fix chemical experimental vessels of different sizes. The adjustment mechanism includes a mounting housing fixedly installed on one side of the top of the base, and a vertical tube is connected to the top of the mounting housing. A slider is slidably mounted on the surface of the vertical tube. Using this mounting mechanism, when placing experimental vessels of different sizes, the experimenter rotates a double-ended screw via a second handle. The threaded connection between the double-ended screw and the moving seats drives the two moving seats and the clamping plate to move synchronously inward or outward, thereby adjusting the distance between the two worm gears. This allows for the fixing of experimental vessels of different sizes, preventing shaking and damage to the vessels during use.

This utility model discloses a layered focusing ultrasonic cleaning chamber for PCB boards, comprising a main chamber, a rinsing chamber, and a high-frequency transducer. The rinsing chamber is bolted to the left side of the main chamber near the top, and the top of the main chamber is open. A rotating mesh box is located near the top inside the rinsing chamber, and an electric door is installed on the front side of the rotating mesh box. The main chamber and the rinsing chamber each have slots matching the rotating mesh box. A sealing plate is slidably connected to the left inner wall of the main chamber. This technical solution, through the cooperation of components such as the rinsing chamber, high-frequency transducer, rotating mesh box, rotating tube, and vertical tube, enables effective rinsing and ultrasonic cleaning, thus achieving thorough cleaning and improving cleaning efficiency. It also allows for multi-position auxiliary drying, enabling effective drying and improving overall drying and utilization efficiency.

This utility model discloses a hanging rack for metal product processing, relating to the field of metal processing technology. It includes a base with a fixed seat on it. The fixed seat has a sliding groove and a sliding mechanism, a lifting mechanism, and a suspension mechanism. The sliding mechanism includes a sliding block and a socket. The sliding block is slidably installed in the sliding groove, and the socket is fixedly installed on the sliding block. The lifting mechanism includes a plug, a vertical tube, a vertical rod, and a top block. The plug is inserted into the socket, the vertical tube is fixedly installed on the plug, one end of the vertical rod is slidably installed in the vertical tube, and the top block is fixedly installed on the vertical rod. A fixing screw is provided on the vertical tube, with the end of the fixing screw contacting the vertical rod. The position between adjacent sets of sliding blocks can be adjusted according to the width of the metal product, thereby preventing collisions between adjacent metal products and providing good protection for the metal products. Through the cooperation between the vertical tube and the vertical rod, the height of the top block can be flexibly adjusted, facilitating the hanging of metal products of different lengths.

A locking apparatus for preventing loosening of a ring clamp, comprising an insertion tube (10) axially provided with a groove (11) along an outer circular wall surface, a vertical tube (20) axially provided with a notch (21) along a wall body, a ring clamp (30) sleeved on the outer circumference of the vertical tube (20), and an eccentric wheel locking mechanism (40) connected to the open end of the ring clamp (30), wherein the inner circular wall surface of the ring clamp (30) is provided with a boss (31) matching the groove (11); the boss (31) is connected to the inner circular wall surface of the ring clamp (30) by means of a guide block (32); the guide block (32) is engaged in the notch (21) of the vertical tube (20); the surface of the vertical tube (20) is provided with a positioning slot (22); the positioning slot (22) is arranged on one side of the notch (21); the positioning slot (22) is communicated with the notch (21); the positioning slot (22) is used for accommodating the guide block (32). In the locking apparatus for preventing loosening of the ring clamp, the guide block rotated into the positioning slot prevents relative axial movement of the insertion tube and the vertical tube in a harsh or bumpy environment, and thus, the safety is higher.

This utility model discloses a special profile for a loader's built-in sealing strip door frame, comprising a first horizontal tube surface, which is bent counterclockwise by 90° and extends to a first vertical tube surface; the first vertical tube surface is bent counterclockwise by 90° and extends to a second horizontal tube surface; the second horizontal tube surface is bent counterclockwise by 63.74° and extends to a first inclined tube surface; the first inclined tube surface is bent clockwise by 116.26° and extends to a third horizontal tube surface; and the third horizontal tube surface is bent clockwise by 90° and extends to the second vertical tube surface. The second vertical pipe surface is bent counterclockwise 180° and extends to the third vertical pipe surface. The third vertical pipe surface is bent counterclockwise 90° and extends to the fourth horizontal pipe surface. The fourth horizontal pipe surface is bent counterclockwise 90° and extends to the fourth vertical pipe surface. The fourth vertical pipe surface is bent clockwise 90° and extends to the fifth horizontal pipe surface. The fifth horizontal pipe surface is connected to the first horizontal pipe surface. The third horizontal pipe surface and the fourth horizontal pipe surface are fitted together on the side closest to the third vertical pipe surface. The second vertical surface and the third vertical surface are fitted together. This provides more optimized installation conditions for the sealing strip.

This utility model relates to a connected towing device for finished tricycles, including a hook, a clamp plate fixedly connected to the hook, and a clamp plate movably connected to one end of a towing vertical tube via a pivot. The other end of the towing vertical tube is welded to the middle of a towing horizontal tube. A clamping arm two is fixedly connected to one end of the towing horizontal tube. A clamping arm one is movably mounted on a U-shaped seat via a pivot. The ends of clamping arms one and two are provided with clamping sleeves that fit over the front axle of the tricycle. This utility model uses a parking mechanism to quickly control the opening and closing of clamping arms one and two, eliminating the need for rotational adjustment of the fitting width. The angle automatically adapts by directly utilizing the handbrake of the parking mechanism. The parking mechanism has a built-in locking function, greatly increasing the versatility and ease of operation of the device. By combining the towing vertical tube, the towing horizontal tube, and clamping arms one and two, the opening width is controlled, reducing the overall dimensions of the device. This allows for efficient transfer of finished tricycles of different shapes and sizes, effectively simplifying the operation steps.

1. Name of the product in this design: Folding vehicle vertical tube fitting. 2. Purpose of this design: Foldable vertical tube for folding bicycles and electric vehicles. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The utility model relates to the technical field of seeding machine, concretely relates to the traditional chinese medicinal material seeding machine seed guiding device of adjustable row spacing, including crossbeam rod, be provided with seed storage cylinder on crossbeam rod, the bottom fixed mounting of seed storage cylinder has the discharge hopper, be provided with a plurality of bottom and outside communication's discharge channel in the discharge hopper, the bottom fixed mounting of discharge hopper has a plurality of and corresponding discharge channel's vertical tube intercommunication, the bottom of vertical tube in side position department is provided with unloading hopper, unloading hopper moves along the rectangular rod left and right and carries out the adjusting operation of unloading position, be provided with the raking blade for controlling the unloading amount in the vertical tube, a plurality of raking blades drive through servo motor and long axle, the top fixed mounting of seed storage cylinder has the adding pipe, the utility model is convenient for and carries out the row spacing adjusting operation, and it is convenient to use.

This application relates to the field of fans, and more particularly to a dual-purpose fan, comprising: a fan head assembly, a base assembly, and a vertical tube assembly; the vertical tube assembly consists of several vertical tubes, and when the multiple vertical tubes are connected end-to-end to form a first support structure, the fan head assembly and the base assembly are respectively installed at both ends of the first support structure to form a vertical fan; when the multiple vertical tubes are respectively connected to the fan head assembly to form a second support structure, the base assembly is installed on the air outlet surface of the fan head assembly to form a desktop fan. Compared with the prior art, this application breaks through the single-form limitation of traditional fans, significantly reduces the user's purchase and storage costs through component reuse, and requires no additional auxiliary components during structural conversion, ensuring the reliability and convenience of dual-mode switching.

This utility model discloses an enema bag with a scale display and replaceable anal tube, including a connector. The connector includes a connecting tube and an anal tube, which are connected by an installation mechanism. The other end of the connecting tube is connected to the enema bag body. The installation mechanism includes two vertical rods fixedly connected to the upper end of the connecting tube. The upper ends of the two vertical rods are jointly fixedly connected to a horizontal plate, and the lower end of the horizontal plate is fixedly connected to a vertical tube. This utility model aligns two guide blocks with two guide grooves, and then the anal tube is directly inserted into the connecting tube. When the two guide blocks are fully inserted into the two guide grooves, the alignment is complete. At this point, the limiting rod is pulled out. Without the limiting effect, the insertion rod moves downward under the elastic force of the connecting spring and enters the insertion hole of the anal tube, completing the limiting and installation of the connecting tube and anal tube. The overall disassembly and installation are extremely convenient.

This utility model relates to a novel car seat armrest. The novel car seat armrest includes an armrest frame and an outer protective plate. The armrest frame is set on the side panel of the seat cushion and specifically includes an upper horizontal tube, a front vertical tube, a rear vertical tube, and a rear vertical tube support. The front and rear vertical tubes are parallel and vertically arranged, with their top ends fixedly connected to both ends of the upper horizontal tube and their bottom ends fixedly connected to the rear vertical tube support, forming a U-shaped frame. The outer protective plate surrounds the outside of the armrest frame. The solution provided in this application significantly improves the rigidity and strength of the seat armrest. Furthermore, it eliminates the need to remodel the side panel of the seat cushion, allowing the armrest frame to be fixed to the side panel, greatly reducing mold costs and parts costs, thus balancing structural reliability and economy. It also effectively avoids swaying and resonance problems, ensuring the stability of the armrest under complex road conditions.

This utility model discloses an auxiliary nozzle angle adjustment device with graduated indication for an air-jet loom, relating to the field of air-jet loom nozzle technology. The device includes a base, an adjustment assembly on the upper surface of the base, and a nozzle connection assembly on the top of the adjustment assembly. The adjustment assembly includes a cylinder fixedly mounted on the base, a rotating block rotatably connected inside the cylinder, a pressure ring threaded to the top of the cylinder, and a screw inserted into one side of the cylinder. One end of the screw is rotatably connected to a clamping plate via a bearing. This utility model, through its adjustment assembly, facilitates the adjustment of the vertical tube's rotation angle during use, allowing for subsequent adjustment of the nozzle's orientation angle according to actual usage conditions. This improves the ease of use and efficiency of the device.

A jig for assembling triangular window fittings includes a horizontal tube, a vertical tube positioned perpendicularly in the middle of the horizontal tube, end plates at both ends of the horizontal tube, and a triangular plate at the connection between the horizontal and vertical tubes. The jig includes a first support at the bottom of both ends of the horizontal tube, a second support at the bottom of one end of the vertical tube, a third support at the connection between the horizontal and vertical tubes, a fourth support below the triangular plate, a first rotary clamping cylinder on one side of both ends of the horizontal tube for downward pressure on the horizontal tube, a second rotary clamping cylinder below both ends of the horizontal tube for pressure on the end plates, a third rotary clamping cylinder at one end of the vertical tube for downward pressure on the vertical tube, and a first clamping cylinder on one side of the fourth support for pressure on the triangular plate. By using the supports to support the fittings and the rotary clamping cylinders to clamp each fitting, the spatial position of the triangular window fittings can be precisely constrained, achieving multi-point synchronous clamping.

The utility model relates to the technical field of scaffold, disclose a scaffold anti -falling self -lock connecting piece, including vertical tube, the vertical tube outside fixedly connected with fastener, two pipe heads are fixedly connected in fastener, the movable joint is limited to the post in pipe head, a plurality of first connecting plates are fixedly connected to one side of limited post, and the side fixedly connected with the limiting block of first connecting plate away from limited post, and a plurality of first connecting plates between movable joint have connecting block. The vertical tube outside sets fastener, and fastener two ends respectively set up a pipe head, and the telescopic limiting post is set up in the pipe head, and the telescopic shift block and the clamping block are set up outside the limiting post, when replacing and the pipe head connection, can make the pipe head utilize the slope surface of one end of limiting post and push the limiting post into the pipe head, when the cross pipe and the pipe head port alignment, can make the limiting post insert into the cross pipe with the first compression spring force, and cooperate the clamping block and realize the quick assembly of pipe head and cross pipe.

This utility model relates to the field of sand cooling technology, specifically a vertical pipe sand cooling system using Freon refrigerant. It includes an installation plate with a cooling box fixedly mounted on it. Several sets of lower installation pipes are fixedly connected to the top of the cooling box, and several sets of cooling pipes are fixedly connected to the bottom of each lower installation pipe. A compressor is fixedly mounted on the top of the installation plate, and the compressor contains Freon refrigerant gas. By using Freon refrigerant circulation, combined with copper alloy cooling pipes that ensure full contact with the sand aggregate, the system solves the problem of low efficiency in traditional cold air cooling, significantly improving the cooling efficiency of the sand aggregate. An exhaust fan and heat dissipation fins enhance the condensation effect, while the central pipe accelerates refrigerant circulation, further optimizing cooling performance. A cylinder drives a baffle to quickly discharge materials, making operation convenient. Ultimately, it can efficiently control the temperature of the sand aggregate, ensuring that the concrete outlet temperature meets standards and avoiding quality problems such as cracks caused by high temperatures.

This utility model discloses a plant protection device, comprising two semicircular frames, each with a protective net below it. Multiple mounting components for fixing the protective net are connected to the lower surface of each semicircular frame. Multiple support components are also mounted on the lower surface of each semicircular frame. Each support component includes a vertical tube fixed to the lower surface of the semicircular frame, with a slidable rod inside the vertical tube. A through hole is formed on the bottom sidewall of the vertical tube, through which a fixing component passes. This utility model includes two semicircular frames, support components, fixing components, connecting components, and a protective net. In use, the two semicircular frames are joined into a ring using the connecting components, allowing the two semicircular frames to surround the plant from the side. The height of the two semicircular frames can be adjusted using the support components to accommodate plants of different heights. The entire device is easier and faster to install.

This utility model discloses a surgical support frame with easy height adjustment, including a vertical tube, a base fixed to the bottom end of the vertical tube, a lifting rod inserted inside the vertical tube, a piston fixed to the bottom end of the lifting rod, a support plate set at the top end of the lifting rod, an air-blowing assembly fixed inside the base, and an exhaust assembly set on one outer wall of the base. The air-blowing assembly includes a cylinder embedded inside the base, a piston set inside the cylinder, and a pressing column fixed to the top end of the piston. This utility model uses the air-blowing assembly to inflate the vertical tube, thereby causing the piston to raise the vertical rod and the support plate at its top. The exhaust assembly can expel the air inside the vertical tube, causing the support plate to lower. This allows medical staff to adjust the height of the support plate with their feet, eliminating the need for hand adjustment and preventing hand contamination during the adjustment process, thus achieving a more convenient height adjustment of the support frame.

Device for mechanical separation of distillate fractions has for a novelty a rotating vessel (104) mounted concentrically with a vertical pipe (102), between an overflow ring (103) and a segmented collector vessel (105), wherin the rotating vessel (104) contains two concentric cylindrical walls and a bottom in the form of a circular ring connected to a distillate outlet (109). The rotating vessel (104) can rotate around the vertical tube (102) axis. The collector vessel (105) is located below the rotating vessel (104), and fixed to the vertical pipe (102) and consists of several segments separated by partition walls (108), where each segment has an independent distillate drain (109) which is connected to the storage tanks. The device also includes an inlet (101), the overflow ring (103) and a discharge valve (110). The distillate is fed into the vertical tube (102), where it is raised and poured over the overflow ring (103), and then collected in the rotating vessel (104) which direct the liquid to the corresponding segment of the collector vessel (105).

This utility model provides a verticality testing device for water conservancy engineering surveying, relating to the field of water conservancy engineering. The device includes a worktable with four support rods fixedly installed on its bottom surface at the four corners. Two plumb lines are fixedly installed on the bottom surface of the worktable, with a plumb bob A fixedly installed at the bottom end of each line. Two swing mechanisms are fixedly installed on the upper surface of the worktable, arranged vertically. A vertical tube is fixedly installed on the worktable, penetrating downwards through the worktable, with its inner hole extending through the worktable. Two arc-shaped plates are fixedly installed at the upper end of the tube, with a rotating ball positioned between them, allowing the ball to rotate omnidirectionally relative to the plates. This verticality testing device for water conservancy engineering surveying, through the use of a rotating ball, testing blocks, and a lever, achieves a convenient effect in detecting verticality, offering better results than traditional conical plumb bobs.

The present application relates to petrochemical equipment technical field, specifically to a kind of shell side exhaust blowdown structure suitable for vertical shell-and-tube waste boiler heat exchanger, the upper end portion outside of shell is equipped with the upper flow guide cover being communicated with shell side space, the upper flow guide cover is equipped with medium outlet, the upper flow guide cover extends across upper tube sheet cover and covers the partial of upper tube box, the position higher than the bottom surface of upper tube sheet of upper flow guide cover is equipped with exhaust port;The lower end portion outside of shell is equipped with the lower flow guide cover being communicated with shell side space, the lower flow guide cover is equipped with medium inlet, the lower flow guide cover extends across lower tube sheet cover and covers the partial of lower tube box, the position lower than the top surface of lower tube sheet of lower flow guide cover is equipped with blowdown port.Upper and lower flow guide cover structure makes shell side medium fill entire shell side as far as possible, reach the effect of balanced temperature difference, can solve the possible medium flow short circuit phenomenon that medium inlet and outlet are limited by shell and tube sheet connecting structure, effectively avoid the appearance of local high temperature failure of shell and tube sheet connecting position.

This invention discloses a biochip system integrating GUVs preparation and capture, cell membrane model construction and analysis, consisting of three sections: a preparation section, a stabilization section, and a capture and analysis section. The preparation section includes an internal aqueous solution channel, an oil-in-water droplet delivery channel, and a GUVs forming channel connected sequentially. Lipid solution channels are located above and below the right end of the internal aqueous solution channel, and external aqueous solution delivery channels are located above and below the end of the oil-in-water droplet delivery channel. The stabilization section is a serpentine flow channel. The capture and analysis section also includes a serpentine flow channel, with GUVs capture microcavity structures arranged in an array from top to bottom on the right side of the vertical tube of the serpentine flow channel. This invention utilizes microfluidic injection to precisely control the morphology and size of GUVs, combined with microstructures embedded in the serpentine flow channel to capture GUVs. The serpentine channel stabilizes the fluid and exerts high shear force, stabilizing the GUVs and reducing oil phase residue. No additional centrifugation collection and screening processes are required, enabling integrated research on cell membrane model construction and analysis.

A folding self-locking structure for the vertical tube of a folding bicycle includes a first seat and a second seat, which are hinged to each other along one side edge. It also includes: a movable handle, one end of which is hinged to the free end of the first seat; a connecting rod, one end of which is hinged to the free end of the second seat, and the other end of which is hinged to the middle section of the movable handle; a locking block formed on the second seat; and a locking structure movably mounted on the connecting rod. When the first and second seats are in a mating state, the locking structure is driven to lock or disengage with the locking block. When the locking structure and the locking block are locked, the movable handle and the connecting rod are collinear. This technical solution reduces the force applied to the movable handle, allowing users to perform locking operations more conveniently and quickly.

The application belongs to the hydrogen energy technical field, and particularly relates to a marine environment interference resistant in-situ hydrogen production split-phase change mass transfer system. The technical scheme is as follows: a marine environment interference resistant in-situ hydrogen production split-phase change mass transfer system, comprising a plate-type mass transfer device combination and a tube-type mass transfer device combination surrounding the plate-type mass transfer device combination, the tube-type mass transfer device combination being a horizontal tube-type mass transfer device combination or a vertical tube-type mass transfer device combination, the hydrophobic gas permeable membrane thickness of the plate-type mass transfer device combination being 0.01-0.4 mm, and the membrane thickness of the tube-type mass transfer device combination being 0.5-1 mm. The marine environment interference resistant in-situ hydrogen production split-phase change mass transfer system is provided, high-density integration of the mass transfer system is realized, damage of sea wave fluctuation interference and the like to the mass transfer system is reduced, and the engineering application of seawater in-situ non-desalination direct electrolysis hydrogen production technology is promoted.

This utility model relates to the field of Panax notoginseng cultivation technology, specifically a biological control device for diseases and pests in Panax notoginseng cultivation. It includes a base, with two first supporting vertical plates on the top of the base. A biological trapping component is connected to the top of the two first supporting vertical plates. The biological trapping component includes a rectangular vertical tube, with a sponge pad in the upper middle part of the rectangular vertical tube and a frame-shaped insert plate in the lower middle part of the rectangular vertical tube. An electric grid is installed inside the frame-shaped insert plate. Two second supporting vertical plates are also provided on the top of the base, with a supporting horizontal plate supported by the top of the two second supporting vertical plates. A pheromone injection component and a driving component are located on the top of the supporting horizontal plate. This biological control device for diseases and pests in Panax notoginseng cultivation effectively attracts diseases and pests through the slow release of pheromones, significantly reducing the use of chemical pesticides. This method not only reduces environmental pollution and protects soil and water sources but also avoids harm to beneficial insects, helping to maintain ecological balance.

This utility model discloses a heat-dissipating transformer core assembly. A high-efficiency heat-conducting component is installed on the outside of the laminated core. Two clamping tubes at the same height have connecting outer tubes movably installed at the same end. An adjusting screw is rotatably connected to a pressing block at one end inside the clamping tube. The ends of the two clamping tubes at the same height are connected by a connecting screw. A supporting cooling component is installed at the bottom of the laminated core. Air is supplied through a supply pipe to the combination of clamping tubes and vertical tubes on one side of the laminated core, and then through the connecting outer and inner pipes to the same combination of clamping tubes and vertical tubes on the other side of the laminated core. Finally, the air is discharged through an exhaust pipe. The airflow outside the laminated core carries away the heat generated by the laminated core, reducing its temperature, preventing overheating and increased losses, avoiding accelerated aging of insulation components, and extending the transformer's service life.