30 results about "Square cavity" patented technology

The utility model discloses a detachable plate heat exchanger shell which comprises a bottom shell plate, a top shell plate is fixedly installed at the top ends of a left shell plate, a right shell plate and a rear shell plate, a front cover plate is rotatably installed at the front end of the top shell plate, and a plurality of heat exchange plates are installed in a cavity formed by the bottom shell plate, the left shell plate, the right shell plate, the rear shell plate and the top shell plate. The inner side of the left shell plate is spirally connected with a heat exchange plate closer, the bottom shell plate, the left shell plate, the right shell plate, the rear shell plate and the top shell plate jointly form a square cavity, a plurality of heat exchange plates can be inserted into the cavity in parallel, and the heat exchange plates can be attached to one another to form a closed heat exchange channel by screwing the heat exchange plate closer. The heat exchange plate at the leftmost end is provided with a bent pipe, so that liquid or gas can circularly flow, the heat exchange plates can be quickly disassembled through reverse operation, protection can be provided by closing the front cover plate, and the device has the capacity of being convenient to install, disassemble and protect.

This invention provides a mobile wind tunnel device capable of outputting uniform droplets, belonging to the field of icing and anti-icing technology for ships and marine structures. The device includes: a stabilizing rectangular cavity and a transitional circular-to-square cavity, the stabilizing rectangular cavity and the transitional circular-to-square cavity being connected. The circular opening of the transitional circular-to-square cavity is connected to a variable frequency fan. A honeycomb rectifier and multiple airfoil spray frames are installed inside the stabilizing rectangular cavity, with the honeycomb rectifier located between the variable frequency fan and the airfoil spray frames. This mobile wind tunnel achieves uniform droplet output, maintaining a stable airflow field through the honeycomb rectifier; by arranging heating tape in the water and air pipes inside the airfoil spray frames, the wind tunnel device can operate for extended periods in low-temperature environments without icing; and a control cabinet controls wind speed, water pressure, and air pressure to obtain icing data for the ship's superstructure under different wind speeds and droplet diameters.

The invention provides an air spring low-frequency vibration isolation device based on turn-back type square cavity flow, which comprises an air spring main air chamber, an additional air chamber, a mass block and a turn-back type square cavity throttle pipe, the mass block is connected with the upper end of the air spring main air chamber, the additional air chamber is connected with the lower end of the air spring main air chamber, and the turn-back type square cavity throttle pipe is connected with the mass block. The turn-back type square cavity throttling pipe is arranged in the main air chamber and the auxiliary air chamber of the air spring, and air in the main air chamber of the air spring can flow into or flow out of the auxiliary air chamber through the turn-back type square cavity throttling pipe. According to the air spring, the turn-back type square cavity throttling pipes are arranged in the main air chamber and the auxiliary air chamber of the air spring in the vertical direction, so that air in the main air chamber of the air spring can flow into or out of the auxiliary air chamber through the turn-back type square cavity throttling pipes; the gas can form an airflow vortex in the square cavity of the turn-back type square cavity throttle pipe, so that energy consumption is increased, vertical low-frequency micro-vibration is effectively isolated, and vibration isolation performance is improved.

The utility model relates to an efficient heat dissipation blower shell in the blower field, which comprises an assembly shell, the assembly shell comprises a left piece and a right piece which are assembled through a buckle structure on the inner side of the assembly shell, the upper side of the interior of the assembly shell is provided with a first square cavity, and the top of the assembly shell is provided with a second square cavity; a first square cavity and a second square cavity are formed in the shell body, an assembly plate is inserted into the first square cavity, a cover plate is inserted into the second square cavity, heat dissipation holes are formed in the assembly plate, and heat dissipation fins are welded to the inner side of the assembly plate. And the assembly plate is limited through the limiting corner connector and the limiting shifting piece, so that the heat dissipation area is increased through the heat dissipation fins when the blower is used, heat can be effectively dissipated out, and the heat dissipation efficiency is improved.

The application discloses a preparation method, product and device of a square core optical fiber preform. The preparation method comprises the following steps: (1) making the rotating central axis of a Leilo triangular drill bit coaxial with the geometric central axis of a circular cavity cladding sleeve, and drilling a rounded square with the width d as the side length by using the Leilo triangular drill bit to obtain a square cavity cladding sleeve; (2) sleeving a square core rod with the width d' into the square cavity cladding sleeve, and stretching or fusing the square core rod into a circular solid rod; and (3) manufacturing the square core optical fiber preform according to the designed shape size and refractive index profile. The Leilo triangular drill bit is designed according to the width fixing principle of the Leilo triangular structure, and can be used for square hole processing of brittle materials such as quartz glass. The optical fiber prepared by using the square core rod and the square hole sleeve combination drawing reduces the probability of uncontrollable core-cladding interface air line occurrence caused by the original square core rod and circular sleeve combination drawing, and guarantees the reliability of the optical fiber.

The invention relates to the technical field of large-size silicon carbide saggar dry-method mechanical pressing, and discloses a large-size thin-wall silicon carbide saggar dry-method mechanical pressing method and a large-size thin-wall silicon carbide saggar dry-method mechanical pressing forming die. The large-size thin-wall silicon carbide saggar dry-method mechanical pressing forming method comprises the steps that firstly, silicon carbide saggar raw materials are treated; step 2, processing and mounting a mechanical pressing forming frame and a movable block; step 3, positioning the loose piece; step 4, intervening the distribution of the mixed fine powder; 5, layered material distribution and pressing of the raw materials; and sixthly, the large-size thin-wall silicon carbide saggar is demolded. The invention discloses a dry-method mechanical pressing forming die for a large-size thin-wall silicon carbide saggar. The mechanical pressing die comprises a die sleeve I and a die sleeve II, the outer side wall of the die cavity is tightly attached and fixed to the interior of a square cavity defined by the first die sleeve and the second die sleeve. And the mechanical pressing forming frame is mounted in the mold cavity. The method has the beneficial effects that the forming strength and the density distribution uniformity are improved, so that the thermal shock stability is improved, and the defects of unfilled corners and pitted surfaces which are easy to generate during demolding are reduced.

This invention discloses a semi-circular lithium metal electrolytic cell, belonging to the field of electrolytic cell technology. It includes a shell with interconnected semi-circular and square cavities inside. The square cavities gradually narrow from the connection points of the semi-circular cavities, and the ends of the square cavities furthest from the semi-circular cavities are connected by arc-shaped corners. The cathode is located inside the square cavity of the electrolytic cell, and the anode is installed at the top of the electrolytic cell and extends into the cathode cavity. This invention relies on the magnetic-thermal field generated by the graphite anode group within the square cavity to drive the molten salt electrolyte to generate a flow field. The varying spacing of the square cavities within the inner shell drives the lithium metal liquid to flow into the semi-circular cavity, while the arc-shaped corners prevent any residual lithium metal liquid.

The invention discloses a device and a method for measuring a three-dimensional velocity field of a rod cluster channel, which are applied to the field of nuclear power reactor core thermal hydraulic power and are used for accurately measuring the three-dimensional velocity field of a coolant in the rod cluster channel. The lower rectifying chamber, the experimental square cavity and the upper rectifying chamber are sequentially communicated from bottom to top to form a fluid channel; a plurality of hollow-core fuel rods which are arranged in an array are arranged in the experimental square cavity, and the hollow-core fuel rods are fixed through a positioning grillwork and a positioning partition plate. The UDV ultrasonic probe system comprises a transverse UDV probe array, an axial UDV probe array and an embedded measuring unit, wherein the lateral surface of the transverse UDV probe array is arranged in a layered manner and corresponds to the rod gap; the axial UDV probe array is arranged at the top of the transverse UDV probe array; the axis of the axial UDV probe array is vertical to the cross section; the embedded measurement unit comprises an embedded UDV probe and a positioning device, the positioning device adjusts the position of the probe through an axial adjusting device, a circumferential adjusting knob and the like, and measurement coverage and accuracy are guaranteed.

The application discloses a kind of chip verification packages, technical solutions include DBC substrate and side plate, the side plate is vertically arranged in the edge of DBC substrate, and then the DBC substrate and side plate form a square cavity;Including gasket one, gasket two, gasket three and gasket four, the gasket one, gasket two, gasket three and gasket four are welded on DBC substrate and electrically connected with DBC substrate, pin needle one, pin needle two, pin needle three and pin needle four are vertically arranged on the gasket one, gasket two, gasket three and gasket four respectively, the advantages of the present application provide the mounting space of integrated sensor chip, avoid pin needle and chip back heat dissipation cause signal interference, directly measure chip performance is convenient.

The utility model relates to the technical field of assembly type floor slabs, in particular to a novel DCKQ cavity component for house building engineering, which comprises a cavity component and a dense rib beam, the cavity component comprises a bottom concrete slab, a square cavity and a top concrete slab, the square cavity and the top concrete slab are equal in boundary dimension, and the dense rib beam is arranged in the cavity component. The boundary dimension of the bottom concrete slab is larger than that of the top concrete slab, and a plurality of first steel bars extending out of the side faces are embedded in the four side faces of the top concrete slab respectively. A plurality of second reinforcing steel bars are arranged on two adjacent side surfaces of the bottom concrete slab, and U-shaped grooves matched with the second reinforcing steel bars are formed in the other two corresponding side surfaces of the bottom concrete slab; the multi-ribbed beam is arranged between the two cavity components. According to the utility model, bottom slurry leakage caused by upward floating in the concrete pouring process is avoided, and the quality problems of installation position deviation and the like are avoided due to mutual fixed connection between the cavity components.

This invention discloses a method for ensuring the coaxiality of a high-energy electron gun body, belonging to the field of high-energy electron guns. The method includes: (1) first assembling the flange connector, Kovar ring I, Kovar ring II, and ceramic tubing onto an argon arc welding fixture I, and then using argon arc welding to weld Kovar ring I to the flange connector and flange to obtain a flange ceramic assembly; (2) milling the installation reference surface after welding; (3) argon arc welding the square cavity weldment; (4) machining the square cavity weldment after welding; (5) ion beam welding the anode plate; (6) ion beam welding the square cavity weldment; (7) brazing the ceramic tubing to Kovar ring I and Kovar ring II. By rationally arranging the welding and milling processes using this method, the coaxiality of the gun body can be ensured, thereby improving the assembly accuracy of the high-energy electron gun and the performance of the electron beam. This invention provides a method for the processing and manufacturing of a high-energy electron gun body, and this method also has guiding significance for the production and manufacturing of electron guns.

The present application belongs to the technical field of casting mold, and particularly relates to a square cavity casting mold. The square cavity casting mold comprises a mold body and supporting legs for supporting the mold body. The mold body comprises horizontally and intervally arranged first and second vertical mold plates. An outer mold cylinder and an inner mold cylinder are assembled between the first and second vertical mold plates. The first and second vertical mold plates, the outer mold cylinder and the inner mold cylinder cooperatively form an annular cavity. The first and second vertical mold plates are square in structure. The first and second vertical mold plates are fixed on the supporting legs in a manner that two opposite top vertices of the first and second vertical mold plates are vertically arranged and the connecting line is perpendicular to the horizontal plane. At least one of the first and second vertical mold plates is provided with a protrusion for forming a sealing groove. At least one of the first and second vertical mold plates is assembled with a threaded part for fixing a metal threaded insert. The top of the mold body is provided with a mold gate at the top vertex of the uppermost end. The mold gate is communicated with the cavity. The present application solves the problems of air holes and uneven bottom of the sealing groove caused by the existing casting method.

The utility model belongs to the technical field of quick replacement devices, and discloses an aluminum profile extrusion die quick replacement device which comprises a positioning body, a square cavity rectangular groove is formed in the positioning body, a fixing device is fixedly arranged in the square cavity rectangular groove, and second sliding rail grooves are formed in the two sides of the upper end face and the lower end face of the square cavity rectangular groove. A first sliding rail is fixedly arranged in the second sliding rail groove, first sliding blocks are arranged on the two sides of the first sliding rail in a sliding mode, a moving plate is fixedly arranged at one end of each first sliding block, a grinding tool body is fixedly arranged on the inner side of the moving plate, and through the first sliding rail, the moving plate, the sliding rail groove and the sliding blocks, a heavy grinding tool is simplified, the shutdown time is shortened, and cost expenditure is reduced; the risk that the grinding tool is smashed when replaced is reduced, much time is not wasted, the production efficiency is improved, and the service life of the grinding tool is prolonged.

The utility model discloses coating machine target position moving baffle equipment with high flexibility, and relates to the technical field of coating machines, the coating machine target position moving baffle equipment comprises a straight plate, the left end and the right end of the inner side of the straight plate are respectively provided with a square cavity I, and the outer wall of the front side of the straight plate is symmetrically provided with through openings which are communicated with the two square cavities I; and shielding plates are arranged on the inner sides of the two openings, a displacement assembly used for driving the two shielding plates to relatively move in the first square cavity is arranged on the outer top face of the straight plate, and fixing assemblies are arranged on the outer walls of the left side and the right side of the straight plate. Through mutual cooperation of the driving motor, the rotating shaft rod, the first bevel gear, the second bevel gear and the threaded rod, the two shielding plates can be conveniently driven to move in the first square cavity, so that the target position can be conveniently opened and closed, and the practicability of the whole device is improved.

The invention relates to the technical field of dust falling, in particular to an intelligent spraying dust falling device for house building construction flying dust, which comprises a movable seat and a water tank, a ventilation cylinder and a hollow cylinder are arranged on the movable seat, the hollow cylinder is fixed on one side of the ventilation cylinder, and a square cavity is formed in the middle of the hollow cylinder; arc-shaped grooves are formed in the top and the bottom of the interior of the square cavity, the two arc-shaped grooves are symmetrically arranged with the hollow cylinder as the axis, a filter screen plate is arranged between the two arc-shaped grooves, an air guide piece is arranged on the ventilation cylinder, and a driving mechanism is arranged on the water tank. According to the intelligent spraying and dust falling device for building construction flying dust, through the ventilation cylinder arranged on the water tank and the filter screen plate arranged in the ventilation cylinder, dust in air sucked by the induced draft fan can be treated, the dust in the air is prevented from being mixed with water mist when the air flows to the water mist, and therefore the dust falling performance of the water mist can be kept.

The application relates to a method for improving the regularity of a cold isostatic pressing graphite product mold, two panels, two side plates, a top cover plate and a bottom cover plate are prepared according to the size of the isostatic pressing graphite product to be prepared, transparent adhesive tape is used to paste the connecting positions of the two panels, the two side plates and the bottom cover plate, a square cavity structure with an opening at the top is formed after pasting, then filler for preparing the isostatic pressing graphite product is filled into the square cavity structure, finally, the top cover plate is pasted to the top of the square cavity structure filled with the filler through the transparent adhesive tape, and the inner mold is completed; the outer shell is used in cooperation with the disposable inner mold to replace traditional upper leather sleeve inner molds and lower leather sleeve inner molds, a preset blank shape can be obtained through one-time forming without needing to be cut again, raw materials are saved, the overall finished product has high regularity, and the product appearance is good.

This utility model discloses a prestressed concrete reinforcement component, relating to the field of building construction technology. It includes a base plate, with a U-shaped plate fixedly installed at the center of the outer top surface of the base plate. Grooves are formed at both ends of the rear outer wall of the vertical plate. T-shaped blocks are slidably fitted onto the left and right ends of the vertical plate, inside the two sets of grooves. A rectangular block is fixedly installed at the center of the front outer wall of the vertical plate, with a square cavity inside. A power component for driving the two sets of T-shaped blocks to move relative to each other is installed inside the square cavity. This utility model utilizes a worm gear and worm to drive a bidirectional lead screw to rotate, thereby allowing the straight column to move relative to the T-shaped blocks along the vertical plate. This allows for adjustment of the support width according to usage needs, improving practicality, increasing the efficiency of the device, and meeting application requirements.

The application discloses a kind of unequal height layering unit frame multi-cavity nodes and its processing method, node body is connected with unequal height difference chord in four orthogonal directions, so that overall node and truss connected thereon form spatial step-shaped layout;Node body forms the height decreasing cross-shaped cavity layer, the eye-shaped cavity layer, the sun-shaped cavity layer and the square cavity layer from bottom to top inside, the vertical height of each cavity layer corresponds with the height difference of the chord connected in its direction;The exposed surface of the chord and web is configured as the direct installation base surface of roof structure layer;Multiple nodes are connected to form standardized spatial step-shaped unit module by orthogonal truss, and multiple spatial step-shaped unit modules can be stacked to form overall building or structural system.The application solves the problems of traditional truss node in application scope, structure and building coordination, and processing precision, etc., and improves the spatial adaptability, construction efficiency, integration and mechanical properties of building structure.

The utility model belongs to the technical field of concrete processing, and particularly relates to a pervious concrete preparation stirrer which comprises a movable base and a stirring tank, the stirring tank is rotatably installed on the upper side of the movable base, a containing groove matched with the stirring tank is formed in the upper side of the movable base, and a plurality of protruding teeth are fixedly arranged on the lower side of the stirring tank. A toothed plate is slidably assembled on the upper side of the movable base, the toothed plate is meshed with the multiple convex teeth, a square cavity is formed in the movable base, two square plates controlled by hydraulic cylinders are fixedly arranged on the side, close to the square cavity, of the toothed plate, and a stirring assembly is arranged in the stirring tank; the hydraulic cylinder drives the square plate to move, the square plate drives the toothed plate to move at the same time, and the toothed plate drives the stirring tank to rotate through the multiple convex teeth to adjust the inclination angle of the stirring tank, so that feeding and discharging are convenient, and the interior of the stirring tank is also convenient to clean.

The invention relates to the technical field of LCD manufacturing, in particular to a bonding machine pressing device for an LCD, which comprises an LCD display screen and an FPC connecting piece, the FPC connecting piece is arranged at the upper end of the LCD display screen, the upper end of the FPC connecting piece is provided with a pressing structure, the pressing structure comprises a pressing shell, the pressing shell can abut against the upper surface of the FPC connecting piece, the lower end of the pressing shell is provided with a square cavity, and the lower end of the pressing shell can abut against the upper surface of the FPC connecting piece. According to the ACF resin melting and curing device, temperature control over the ACF resin melting and curing process is achieved through switching of the stacking state and the unfolding state of the heating ceramic pieces and cooperation of contact and separation of the heat conduction plates, thermal fatigue damage of heating elements is avoided, meanwhile, through cooperation of a piston plate, an exhaust fan and an exhaust pipe, water vapor and waste heat in the pressing process can be effectively removed, the pressing quality is ensured, and the production efficiency is improved. Bubbles are prevented from being generated, the whole preheating, pressing and cooling process is integrated, and the production efficiency is improved while the process stability is guaranteed.

The utility model relates to the technical field of spraying machines, in particular to a double-station automatic spraying machine which comprises a box body and an electric telescopic rod, one end of the electric telescopic rod is fixedly connected to the upper end of the box body, the other end of the electric telescopic rod is fixedly connected with a piston plate, a conveying component is installed in the box body, and the piston plate is fixedly connected with the conveying component. The conveying component comprises a rack plate, a moving plate and a square cavity, the square cavity is fixedly connected to the bottom wall of the box body, the end, away from the electric telescopic rod, of the piston plate is slidably connected into the square cavity, the upper end of the rack plate is fixedly connected with the upper end of the piston plate, a rack rod is rotatably connected to the outer side wall of the box body, and the rack plate is fixedly connected with the upper end of the piston plate. In the process that the piston plate moves downwards in the square cavity, gas in the square cavity can be extruded to be exhausted to a moving machined part through the exhaust port, the upper surface of the machined part can be cleaned, and therefore the better spraying effect on the machined part is guaranteed.

The utility model relates to the technical field of glass detection, in particular to a display glass detection comparison device which comprises a supporting table, a detection box and two placing plates, the detection box is fixedly connected to the supporting table, the two placing plates are both connected to the bottom wall of the detection box in a sliding mode, automatic fixing parts are installed on the placing plates, and the automatic fixing parts are fixed to the bottom wall of the detection box. The automatic fixing part comprises cylinders, suckers, an air blocking block and a square cavity, and the plurality of cylinders are fixedly connected to the placing plate. Glass to be detected is placed on the suckers of the placing plate, and the suckers are stressed to deform by pressing the glass to be detected downwards; the internal gas pressure of a cylinder and a suction cup is increased to tightly suck the to-be-detected glass, then a threaded rod is rotated, the threaded rod drives a placement plate to move through a moving block until the placement plate reaches a detection position, rotation of the threaded rod is stopped, and the phenomena that the to-be-detected glass collides with the detection box and is not stably fixed are avoided.

The utility model relates to an air-tight seal detection device based on a thin-wall shell, which comprises a detection table, a fixing plate, a product placing mechanism, a downward pressing mechanism and a horizontal pressing mechanism, and is characterized in that the fixing plate is fixed on the detection table, and the product placing mechanism, the downward pressing mechanism and the horizontal pressing mechanism are arranged above the fixing plate; the product placing mechanism comprises a sealing gasket, a sealing pressing block and a supporting block; the supporting block is the same as the interior of the shell in shape; the middle of the sealing pressing block is a square cavity, the width of the cavity is matched with the length of the shell, and a circle of protruding rib is arranged outside the square cavity on the downward face of the sealing pressing block. A screw penetrates through the supporting block and the sealing gasket and is fixed on the fixing plate; the horizontal pressing mechanism comprises a finger air cylinder, a horizontal pressing plate and a rubber pad, the horizontal pressing plate is fixed to a movable part of the finger air cylinder, and the rubber pad is fixed to the horizontal pressing plate; according to the utility model, the thin-wall shell is not easy to deform during air tightness detection through the supporting block, and the bottom, the left opening and the right opening of the shell are sealed through the design of the product placing mechanism.

The utility model relates to the technical field of vacuum equipment, and particularly discloses a high-vacuum tube furnace convenient to take and change samples, which comprises a tube furnace mounted on a support table, a quartz furnace tube arranged in the tube furnace, a heating element arranged in the tube furnace, and a sample taking device arranged in the tube furnace, one end of the quartz furnace tube penetrates through the tube furnace and is connected with a vacuum system through a quartz tube connecting flange, the vacuum system comprises a six-way square cavity supporting frame, a six-way square cavity, a mechanical pump connector, a sampling dismounting head and a molecular pump, one end of the six-way square cavity is connected with the molecular pump through a vacuum pipeline, and a gas circuit module is arranged in the supporting table; the gas circuit module is connected with the quartz furnace tube; the molecular pump is provided with a series of vacuum systems, so that the operation of replacing samples without shutdown is realized, the working efficiency is obviously improved, and the start and stop times of the molecular pump are reduced, so that the abrasion of the molecular pump is reduced, and the overall service life of the equipment is prolonged.

The application discloses a small fixed water intelligent photovoltaic power station, which comprises a floating mounting plate, the bottom of the floating mounting plate is provided with a flexible body, the inside of the flexible body is provided with a cavity, one side of the floating mounting plate is correspondingly connected with an anchor cable, one end of the anchor cable is provided with a fixed pile, the top of the floating mounting plate is provided with a fixed rod, the top end of the fixed rod is connected with a photovoltaic power generation plate, the photovoltaic power generation plate is electrically connected with a storage battery, the floating mounting plate is provided with a lower through pipe in a plug-in mode, the lower through pipe is in communication with the cavity, the top of the floating mounting plate is fixedly provided with a sliding support through bolts, the sliding support is uniformly provided with a sliding groove, the inside of the sliding groove is slidably provided with a square cavity, the bottom of the square cavity is integrally formed with a gas guide pipe, and the gas guide pipe is sleeved with the lower through pipe, so that the current poor practicality problem is solved.

The utility model relates to the technical field of building walls, and discloses a vacuumizing heat preservation wallboard structure which comprises two sets of X-direction outer frames and two sets of Y-direction outer frames, the two ends of each X-direction outer frame are attached to the two sides of the corresponding Y-direction outer frame, and the two ends of each Y-direction outer frame are attached to the two sides of the corresponding X-direction outer frame. The two groups of X-direction outer frames and Y-direction outer frames form a square frame body, a plurality of groups of Y-direction cross beams are mounted on the surfaces of the X-direction outer frames, a plurality of groups of X-direction cross beams are mounted on the surfaces of the Y-direction outer frames, and the plurality of groups of X-direction cross beams and the plurality of groups of Y-direction cross beams are in butt joint in a shape like a Chinese character'tian 'to form a square cavity; a supporting short column is fixedly connected to the butt joint position of the cross beam in the X direction and the cross beam in the Y direction. The vacuum cavity of the vacuumized wall body can effectively block heat transfer, and the vacuumized wall body is firm in structure and can effectively resist external atmospheric pressure; the width and the thickness of the wall body can be adjusted according to actual sizes, and flexibility is high.

An embedded liquid cooling plate structure relates to a liquid cooling box plate, and is characterized in that a box body (1) is arranged at the top of a bottom plate (12), a square notch (2) corresponds to a notch of a half groove (13) to form a square through hole (15), a liquid cooling block (5) penetrates through the square through hole (15), then the lower half part of the liquid cooling block (5) is arranged in the half groove (13), two protruding edges (7) are arranged in two clamping grooves (14), the upper half part of the liquid cooling block (5) is arranged in a square cavity (3) and the square notch (2), and the square cavity (3) and the square notch (2) are arranged on the bottom plate (12). After the bottom of the liquid cooling block (5) is attached to the groove bottom of the half groove (13), the liquid cooling groove (10) forms a liquid cooling channel; according to the utility model, the deeper liquid cooling channel is arranged on the thickened liquid cooling plate, the deepened liquid cooling channel plays a role in high-flux cooling, and the whole cover plate is used for covering and packaging the liquid cooling channel, so that the packaging process is simplified, and the sealing degree of packaging is increased.

The utility model discloses a flame-retardant anti-deformation PVC (polyvinyl chloride) environment-friendly hard wallboard which comprises a PVC wallboard main body, a decorative layer is adhered to the outer surface of the PVC wallboard main body, and the decorative layer is made of flax; a plurality of triangular cavities with the sections of equilateral triangle structures are formed in the PVC wallboard body, a protruding clamping strip is constructed on one side of the PVC wallboard body, a connecting clamping groove is formed in the other side of the PVC wallboard body, and a locking piece groove is formed in one side of the bottom of the PVC wallboard body. According to the utility model, the decorative layer on the outer surface of the PVC wallboard main body is made of the flax material which is a natural fiber material, so that the PVC wallboard is more environment-friendly and healthy, and the B1 fireproof and flame-retardant characteristics of the flax material are utilized, so that the flame-retardant property of the whole PVC wallboard main body can be improved, and the flame-retardant property of the PVC wallboard main body can be improved according to the stability of the triangular geometric structure. Compared with a square cavity structure, the strength of the triangular cavity formed in the PVC wallboard main body is higher, so that the deformation resistance of the PVC wallboard main body is effectively improved.

This invention proposes a square pipe pressing and side punching die, including an upper pressure plate and a lower pressure plate. The lower pressure plate is provided with at least one pressing assembly and a side punching assembly. The pressing assembly includes several support seats, and a lower die is provided on the support seats. The lower die has a square cavity, and support blocks are provided on the four sides of the bottom of the square cavity. A shaping block is provided at the center of the support blocks. The upper pressure plate is provided with a first punching assembly corresponding to the pressing assembly and a second punching assembly corresponding to the side punching assembly. This die is provided with four sets of rotatable rotating blocks in the lower die, which cooperate with the support blocks with arc-shaped bottoms. By setting a power at the lower part of the rotating blocks, the rotating blocks are pushed to open in a flared form to facilitate the insertion of square workpieces. When the upper punch presses down, it can drive the rotating blocks to move closer to the pipe, and at the same time, the upper part of the pipe is hard-pressed in the cavity to form a boss. When removing the material, the rotating blocks can be separated from the pipe in a flared shape to facilitate the removal of the pipe.

This invention relates to a heat conduction structure for a heat pipe with circular holes in a vapor chamber and a method for enhancing reflux, belonging to the technical field of vapor chambers. It includes a vapor chamber body with a cavity within it. The cavity is circular, and multiple raised strips are evenly arranged on its inner circumference. These raised strips, in conjunction with the cavity wall, form multiple capillary grooves distributed around the inner circumference. By utilizing the absence of sharp corners in the circular cavity, localized stress concentration caused by vapor pressure is avoided, significantly improving pressure resistance and deformation resistance, ensuring the long-term reliability of the vapor chamber under high heat loads. The raised strips are evenly arranged along the circumference, forming capillary grooves without dead corners in conjunction with the arc-shaped cavity wall, completely solving the problem of weakened capillary force and poor working fluid flow in the corner areas of square cavities. Under the same projected area, the circumference-to-area ratio of the circular cavity is superior to that of a rectangle, increasing the inner surface area and significantly improving heat exchange efficiency.