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47results about How to "Full inflow" patented technology

Flash memory structure, memory array, and programming, erasing, and reading method of flash memory structure and memory array

The invention discloses a flash memory structure, a memory array, and a programming, erasing, and reading method of the flash memory structure and the memory array. The flash memory structure comprises a semiconductor substrate, a bit line structure, a word line structure, a floating gate structure, and a control gate structure; the inner part of the semiconductor substrate is provided with a doping trap, and a source electrode and a drain electrode are formed by the doping trap; the bit line structure comprises a bit line structure 1 and a bit line structure 2 which are connected with the drain electrode and the source electrode respectively; the word line structure is arranged between the bit line structure 1 and the bit line structure 2; the floating gate structure comprises a floating gate structure 1 and a floating gate structure 2 which are arranged between the word line structure and the bit line structure respectively; the control gate structure comprises a control gate structure 1 and a control gate structure 2 which are arranged on the surface of the floating gate structure respectively; and the bit line structure, the word line structure, and the floating gate structure are all arranged on the surface of the semiconductor substrate. The flash memory structure is capable of reducing memory area, and increasing memory programming speed.
Owner:SHANGHAI HUAHONG GRACE SEMICON MFG CORP

Soil organic restoration device and soil restoration method for smart agriculture

The invention discloses a soil organic restoration device for smart agriculture. A thermal stripping box is clamped to one side of the top end of a supporting frame, a movable roller is placed on the inner side of the thermal stripping box, a discharging hopper is installed on the inner side of the thermal stripping box, a separation limiting plate is connected to the inner side of the thermal stripping box, a concentration sleeve is welded to one end of the thermal stripping box, and a gas conveying pipe penetrates through one end of the concentration sleeve. A gas inlet end of the gas conveying pipe is installed at the top end of a concentration box in a penetrating mode, a gas outlet pipe penetrates through one end of the movable roller, and a gas outlet end of the gas inlet pipe is installed at the bottom end of a separation box in a penetrating mode. Through a conveying belt, the movable roller and the gas conveying pipe, generated steam is exhausted while soil is subjected to thermal stripping, the moisture content in the thermal stripping box is reduced, and meanwhile, heat is recycled for the second time, so that the movable roller is heated, the temperature of the movable roller is guaranteed, soil is heated while the conveying belt is dried, the soil is prevented from being attached to the surface of the conveying belt, and the treatment effect of the soil is guaranteed.
Owner:芷兰生态环境建设有限公司

Coal slime drying system and drying technique thereof

The invention provides a coal slime drying system and a drying technique thereof. The coal slime drying system comprises a coal slime breaker, a drying beater and a pulverized coal collection device. The inlet end of the coal slime breaker is used for receiving wet coal slime. The outlet end of the coal slime breaker is used for being connected with the inlet end of the drying beater. The drying beater is provided with an air inlet. The outlet end of the drying beater is connected with the pulverized coal collection device.
Owner:YANKUANG GRP CO LTD +1

Pavement repairing equipment convenient for rapidly processing materials

The invention discloses pavement repairing equipment convenient for rapidly processing materials. The pavement repairing equipment comprises a main body, a partition board, a feeding hopper and a stainless steel corrugated discharging pipe, wherein a handle is mounted at the right end of the main body through welding, the partition board is fixedly welded to the left upper corner in the main body,the feeding hopper is formed above a control tank in the main body, a second breaking roll is arranged on the right side of a first breaking roll, transmission discs are connected to the top ends ofthe first breaking roll and the second breaking roll, a heating cavity is formed in the left side of the bottom of the feeding hopper, and the stainless steel corrugated discharging pipe is connectedto the bottom end of the heating cavity. According to the pavement repairing equipment, materials can be conveniently added and rapidly processed, the rapid operation of the pavement repairing is guaranteed, the adjustment and the control are convenient, the errors are reduced, and a large number of waste gas produced during the heating can be conveniently treated when an asphalt repairing material is heated, so that the air pollution is reduced.
Owner:嘉兴市顺凯鹿科技有限公司

Water purification system using bioremediation plants

ActiveCN105916820AMaximize water purification efficiencyMaximum degree of purificationSustainable biological treatmentBiological water/sewage treatmentWater flowWater quality
A water purification system using bioremediation plants can comprise: a plurality of bioremediation plants to be planted on the surface of the earth having a slope; a plurality of water permeable blocks formed or buried on the surface of the earth around at least one bioremediation plant among the bioremediation plants, and into which waste water flowing on the surface of the earth flows; and a plurality of perforated pipes through which the waste water, which has flowed in through the water permeable blocks, flows and buried below the surface of the earth at a depth corresponding to the upper roots of the bioremediation plants. Waste water flowing through the perforated pipes is transferred to the roots of the bioremediation plants through the perforated pipes, filtered water to be discharged from the bioremediation plants flows into the perforated pipes, and the filtered water can converge with the waste water, which flows through the perforated pipes, so as to flow.
Owner:KOREA GREEN RESOURCES

Building and closed space high-temperature sterilization and new coronavirus elimination heat pump air conditioning device and application thereof

The invention discloses a building and closed space high-temperature sterilization and new coronavirus elimination heat pump air conditioning device and application thereof An air conditioning space is formed in a building or a closed space. The heat pump air conditioning device comprises a compressor, a high-temperature heat exchanger and an expansion machine. The temperature of high-temperatureand high-pressure gas output by the compressor reaches 100 DEG C or above so that bacteria and viruses carried in the high-temperature and high-pressure gas can be instantly killed. Sterile and non-toxic high-temperature and high-pressure gas sequentially passes through the high-temperature heat exchanger and the expansion machine to form sterile and non-toxic normal-pressure and low-temperature gas, and the sterile and non-toxic normal-pressure and low-temperature gas flows into the air conditioning space and exchanges heat with gas in the air conditioning space to form normal-temperature andnormal-pressure gas. The normal-temperature and normal-pressure gas flows into the compressor through an air return opening to be circulated next time, and therefore after multiple times of circulation, the heat pump air conditioning device can completely kill bacteria and viruses, especially new coronavirus COVID-19, in the air conditioning space, and the air conditioning space is purified intoa sterile and non-toxic space.
Owner:珠海卡洛斯工程咨询有限公司 +3

Modular data automatic measurement metabolic cage

The invention belongs to the technical field of animal experimental equipment, and particularly relates to a modular data automatic measurement metabolic cage. The modular data automatic measurement metabolic cage includes a squirrel cage and a metabolite separation cartridge. The squirrel cage is arranged above the metabolite separation cylinder, and the bottom of the squirrel cage has a grid; and a side wall of the squirrel cage is connected with a feeding duct. The modular data automatic measurement metabolic cage also includes a control box; the control box includes a controller; and the control box is arranged below the metabolite separation cartridge. According to the metabolic cage, the he temperature and humidity environment in the metabolic cage can be detected through a temperature and humidity sensor; the urine volume and the weight of the feces of a mouse can be detected separately by a liquid level sensor and a pressure sensor; the control box is connected to an LED display screen, and the detection data can be directly reflected in the LED display screen; and the controller is also connected with a Bluetooth chip, and the detected temperature and humidity value, the urine volume and the fecal weight are sent to the upper computer through the Bluetooth chip to realize remote monitoring.
Owner:JIANGXI UNIVERSITY OF TRADITIONAL CHINESE MEDICINE

Minitype mobile greenhouse

The invention provides a minitype mobile greenhouse, capable of effectively improving hydrothermal conditions around main trees for urban garden greening, achieving the effects of heat preservation and water retention, and realizing effective greening around the main trees for urban garden greening. The minitype mobile greenhouse is convenient and rapid to use and can be reused; fixing holes formed in edges can be used for fixing the whole mobile greenhouse around the trees by saw dust or nails and the like, and the mobile greenhouse cannot be blown away by wind due to weather causes; raised strips and water guide grooves can more efficiently guide water inside and outside the greenhouse into the periphery of tree roots and grass in the greenhouse.
Owner:青海富腾生态科技有限公司

Diaphragm wall reinforcing cage dovetail type sealing head structure

The invention provides a diaphragm wall reinforcing cage dovetail type sealing head structure. The structure is arranged on a dovetail of a reinforcing cage; steel plates C are symmetrically arranged at the dovetail position of a reinforcing cage B; the width of each steel plate C is more than or equal to the length of between a dovetail convex point F of the reinforcing cage B and a tangent point E of a joint pipe and a horizontal rib; one end point N of each steel plate C is in level with the dovetail convex point F of the reinforcing cage B; the length of each steel plate C is equal to thedistance between the horizontal rib D in the first channel of the reinforcing cage B and the horizontal rib D in the last channel; the vertical distance between a dovetail concave point G of the reinforcing cage B and the other end point M of each steel plate C is more than 15 cm; and the steel plates are horizontally connected with each other in different straight lines. The structure has the advantages that: the steel plates are arranged at the dovetail position, so that foundation is laid for development of diaphragm wall construction to deep direction, design basis is provided for the diaphragm wall reinforcing cage, concrete can completely flow between the dovetail of the reinforcing cage and the joint pipe, flatness of a slot wall is maintained, and scrubbing of the slot wall surface is facilitated.
Owner:TIANJIN SHENJI ENG +1

Kitchen waste treatment system

The invention discloses a kitchen waste treatment system. The kitchen waste treatment system comprises a box body, a material charge hopper, a material charge mechanism, a suction filtration mechanism, a crushing mechanism and a material discharge mechanism, wherein the material charge mechanism comprises a first cylinder body, a second cylinder body, a first screw rod and a plurality of groups ofmaterial discharge assemblies; the suction filtration mechanism comprises a material storage box, a liquid storage box and a first pipe body; the crushing mechanism comprises a first rotary body anda second rotary body; the material discharge mechanism comprises a material discharge box and a plurality of stirring assemblies. The kitchen waste treatment system has the advantages that the kitchenwaste can be timely and thoroughly crushed, and be smoothly discharged via a sewer, and the blockage accident of the sewer is prohibited; the structure is simple, the manufacturing cost is lower, theconsumption level of more users can be met, and the economy and practicality are higher.
Owner:李玉娟

A pavement repairing equipment that is convenient for rapid processing of materials

The invention discloses a pavement repairing device which is convenient for rapid processing of materials, which comprises a main body, a partition, a feeding hopper and a stainless steel corrugated feeding pipe. The right end of the main body is welded with a handle, and the partition is fixedly welded to the main body. The upper left corner of the interior, the feed hopper is set above the control box inside the main body, the second crushing roller is arranged on the right side of the first crushing roller, and the top ends of the first crushing roller and the second crushing roller are both A transmission plate is connected, a heating chamber is provided on the left side of the bottom of the feeding hopper, and the stainless steel corrugated feeding pipe is connected to the bottom end of the heating chamber. The pavement repair equipment that facilitates the rapid processing of materials is convenient for adding materials, for rapid processing of materials, and is conducive to ensuring the rapid progress of pavement repair, easy to control, and conducive to reducing errors, and the asphalt repair materials are heated. At the same time, it is convenient to process a large amount of waste gas generated during the heating process, which is beneficial to reducing air pollution.
Owner:嘉兴市顺凯鹿科技有限公司

External feeding system

An external feeding system comprises a receiving container, a top cover, a feeding container and a limiting structure. The top cover covers the upper end of the receiving container and is provided with a cutting part. The feeding container is rotatably mounted on the top cover, and the feeding container is provided with a discharge port and a sealing opening for sealing the discharge port. When the number of the cutting part is one, the limiting structure is used for limiting the relative rotation angle between the cutting part and the feeding container to be smaller than 360 degrees when thesealing opening is cut by the cutting part. When the number of the cutting parts is more than one, the multiple cutting parts are unevenly arranged at intervals along the same circumference, a centralangle corresponding to an arc between every two adjacent cutting parts is a cutting part included angle, wherein the maximum cutting part included angle is less than or equal to 180 degrees, and thelimiting structure is used for limiting the relative rotating angle between each cutting part and the feeding container to be smaller than the maximum cutting part included angle when the sealing opening is cut off by the cutting parts. When the sealing opening of the feeding container is cut open, it can be guaranteed that the sealing opening cannot fall into the receiving container.
Owner:AMSINO MEDICAL (SHANGHAI) CO LTD

Asg glue stop and glue volume control support structure

The invention discloses an asg glue stop and glue volume control support structure. The support structure comprises two supports arranged symmetrically. The front end of each support is provided witha plurality of slots allowing tungsten plates to be clamped into. The upper end face and the lower end face of each support are provided with a groove I and a groove II correspondingly, and the grooveI and the groove II communicate with the slots. Through the asg glue stop and glue volume control support structure, during gluing, glue just needs to be filled up into the grooves and then can naturally flow into the slots from the top. The support structure is easy to operate and high in efficiency.
Owner:FMI MEDICAL SYST CO LTD

Inking method for cover plate glass

PendingCN111923626AFull inflowAvoid uneven oil extractionPattern printingRotary pressesPad printingGlass cover
The invention relates to the field of 3D cover plate glass, and particularly discloses an inking method for cover plate glass. The method comprises the steps that S1, a pad printing rubber head is manufactured according to the size and shape of the cover plate glass; S2, a pad printing steel plate is manufactured according to the size and shape of the cover plate glass and an inking area of the cover plate glass; S3, the pad printing rubber head, the pad printing steel plate, an ink cup filled with ink and the cover plate glass are mounted on a pad printing machine; and S4, the pad printing machine is started to ink the cover plate glass. The method uses a way of pad printing inking to ink the cover plate glass, the defects of large solvent volatilization pollution and large solvent consumption in a spraying scheme are overcome, the cost is greatly reduced, the overall color effect is uniform, the ink printing position can be accurately controlled within + / - 0.03 mm, and the ink thickness is controlled within + / - 0.002 mm.
Owner:BIEL OPTIC HUIZHOU

Fluoride salt experiment system and method based on molten salt reactor passive waste heat removal system

The invention discloses a fluorine salt test system and a method based on a molten salt rector passive residual heat removal system. The fluorine salt test system comprises an argon gas assist systemformed of a argon gas bottle, a buffer tank, a argon gas pipe and a valve on the pipe, a storage tank used for storing fluorine salt for a long time, a simulated core tank used for simulating the relative position of the molten salt rector core, a heat pipe can with the quick heat radiation effect, a contrast tank used for playing a contrast effect on the heat pipe can and a fluorine salt pipe system connecting fluorine salt pipes of fluorine salt tank with the valve. The invention also provides the test method of the test system, which comprises the following steps: heating the fluorine saltin the storage tank into liquid state, entering the simulated core tank through the fluorine salt pipe under the pressure difference of the argon gas, flowing into the contrast tank or the heat pipe can to perform test under the action of the gravity, and finally flowing back to the storage tank along the fluorine salt pipes. The fluorine salt test system provided by the invention can bear high-temperature work condition, the test process operation is simple and the system loop is safe and reliable.
Owner:XI AN JIAOTONG UNIV

A pump casing casting equipment

The invention provides pump housing casting equipment. The pump housing casting equipment comprises a small chamber, leakage holes, a guide tube and an electrical appliance cabinet, wherein a bottom plate is of a cross structure; a base for supporting ground is mounted at each of four sections of the bottom surface of the bottom plate; two slide slots are formed in the top surface in the horizontal direction of the bottom plate; the bottom plate is in sliding connection with a slide block on the bottom surface through the two slide slots and a slide base; a first bracket is positioned at the rear side of the top surface of the bottom plate, and casting liquid is injected into the first bracket and flows in a switching mode, so that liquid uniformly flows more sufficiently in a mould cavity, and the liquid can flow into each forming corner of the mould cavity more comprehensively, and therefore, the quantity of vapor bubbles is reduced, the pump housing casting equipment is suitable forcasting and forming production of a pump housing with a relatively complex structure; and vapor bubbles are reduced, so that the quantity of sand holes after the housing is formed can be effectivelyreduced, and therefore, quality of products is improved.
Owner:常山正丽机电有限公司

Vertical oil-gas separator for separating petroleum

InactiveCN111927425APrevent impacts during bufferingFull inflowFluid removalDrive wheelControl valves
The invention discloses a vertical oil-gas separator for separating petroleum. The structure of the vertical oil-gas separator for separating petroleum includes a sealing end cover, a device body, aninlet and an oil outlet; the sealing end cover is installed on the upper end of the device body; the inlet is arranged on the left side of the device body, and the oil outlet is arranged on the rightside; the device body is equipped with a gas outlet, a pressure control valve, a mist trap, a buffer plate, an oil collection tank, and a separation cavity; the gas outlet is matched with the pressurecontrol valve; and the inside of the separation cavity is equipped with the mist trap, the buffer plate and the oil collection tank. According to the invention, a liquid squeezing piece and a connecting block are arranged, and the driving wheel is matched with a connecting slide rail, when the mixture is sprayed on the bottom surface of the plate, the formed oil layer is driven in the same direction by the driving wheel through the liquid squeezing piece, so that the oil in the oil layer is scraped from the bottom of the plate body, so as to prevent the formation of thick grease stain on theplate body and causing the impact on the buffering process of the plate body.
Owner:赵晓琳

Pump housing casting equipment

The invention provides pump housing casting equipment. The pump housing casting equipment comprises a small chamber, leakage holes, a guide tube and an electrical appliance cabinet, wherein a bottom plate is of a cross structure; a base for supporting ground is mounted at each of four sections of the bottom surface of the bottom plate; two slide slots are formed in the top surface in the horizontal direction of the bottom plate; the bottom plate is in sliding connection with a slide block on the bottom surface through the two slide slots and a slide base; a first bracket is positioned at the rear side of the top surface of the bottom plate, and casting liquid is injected into the first bracket and flows in a switching mode, so that liquid uniformly flows more sufficiently in a mould cavity, and the liquid can flow into each forming corner of the mould cavity more comprehensively, and therefore, the quantity of vapor bubbles is reduced, the pump housing casting equipment is suitable forcasting and forming production of a pump housing with a relatively complex structure; and vapor bubbles are reduced, so that the quantity of sand holes after the housing is formed can be effectivelyreduced, and therefore, quality of products is improved.
Owner:常山正丽机电有限公司

Flow-stabilizing slag-stopping nodular cast iron pouring structure and working method thereof

The invention discloses a flow-stabilizing slag-stopping nodular cast iron pouring structure and a working method thereof. A first flow blocking piece is arranged at the joint of a main transverse pouring gate and a longitudinal pouring gate of the flow-stabilizing slag-stopping nodular cast iron pouring structure and comprises a head part and a neck part; the head part is in a U shape with an opening formed in one side; the top end of the head part is higher than the bottom of the main transverse pouring gate; the neck part extends to the longitudinal pouring gate from the head part; and first partition pieces are arranged on the head part and the neck part at intervals and divide the U-shaped opening into a plurality of first small feeding openings. Accordingly, floating slag can be effectively prevented from flowing in, the dispersion time of molten metal can be prolonged, and the yield of products is increased.
Owner:苏州石川制铁有限公司

Oil well induced flow system and induced flow process

The invention discloses an oil well induced flow system and induced flow process. The oil well induced flow system comprises a liquid control device for inputting thin oil into an annulus between an oil pipe and a sleeve and collecting return oil in the oil pipe, a pressurizing liquid mixing device for pressurizing the thin oil input into the annulus, and a negative pressure suction device for providing suction force for the return oil in the oil pipe, wherein a liquid outlet of the liquid control device is connected with one end of an oil mixing pipe, the other end of the oil mixing pipe is connected with one end of a thin oil output pipe, the other end of the thin oil output pipe extends into the annulus, the pressurizing liquid mixing device is arranged on the thin oil output pipe, a liquid return port of the liquid control device is connected with one end of an oil return pipe, the other end of the oil return pipe is connected with a liquid outlet of the negative pressure suction device, a liquid inlet of the negative pressure suction device is connected with one end of an oil return inlet pipe, and the other end of the oil return inlet pipe extends into the oil pipe. The system and the process solve the technical problems that crude oil in an oil well is not blown out thoroughly, and blowout is caused when energy accumulated in a stratum is released.
Owner:PETROCHINA CO LTD

Concentration regulation anesthesia outfit for anesthesiology department

The invention discloses a concentration regulation anesthesia outfit for anesthesiology department. The concentration regulation anesthesia outfit comprises a tank body and legs arranged at the bottomof the tank body; electric sliding tables are arranged at an upper side and a lower side of each of two sides of the tank body, a first motor is mounted on a guide block of each electric sliding table, and a bearing penetrates through an output shaft of each first motor, and the output shaft is connected with a cylinder; a clamp slot penetrates a cylinder output end; a stirring mechanism is horizontally mounted at the bottom of the tank body; a water pump is arranged at one side, far away from the stirring mechanism, of the tank body, a water outlet pipe of the water pump communicates and penetrates one side of the top of the tank body; three groups of branches are arranged on the water outlet pipe, and three groups of branches penetrate a convex support plate and are connected with nozzles; and a liquid inlet communicated with an external water pipe is formed at the top of the stirring mechanism on one side of the tank body. The concentration regulation anesthesia outfit disclosed bythe invention is free from manual operation, thereby preventing from contacting medicine raw materials to cause the pollution; the medicine blending quality and efficiency are improved, the concentration precision of the ratio regulation is improved, and the medicine waste is avoided.
Owner:李玉春

Diaphragm wall reinforcing cage dovetail type sealing head structure

The invention provides a diaphragm wall reinforcing cage dovetail type sealing head structure. The structure is arranged on a dovetail of a reinforcing cage; steel plates C are symmetrically arranged at the dovetail position of a reinforcing cage B; the width of each steel plate C is more than or equal to the length of between a dovetail convex point F of the reinforcing cage B and a tangent point E of a joint pipe and a horizontal rib; one end point N of each steel plate C is in level with the dovetail convex point F of the reinforcing cage B; the length of each steel plate C is equal to thedistance between the horizontal rib D in the first channel of the reinforcing cage B and the horizontal rib D in the last channel; the vertical distance between a dovetail concave point G of the reinforcing cage B and the other end point M of each steel plate C is more than 15 cm; and the steel plates are horizontally connected with each other in different straight lines. The structure has the advantages that: the steel plates are arranged at the dovetail position, so that foundation is laid for development of diaphragm wall construction to deep direction, design basis is provided for the diaphragm wall reinforcing cage, concrete can completely flow between the dovetail of the reinforcing cage and the joint pipe, flatness of a slot wall is maintained, and scrubbing of the slot wall surface is facilitated.
Owner:TIANJIN SHENJI ENG +1

Modern streetcar fastener system

The invention discloses a modern streetcar fastener system, which comprises a substrate (3). Cylindrical and ellipsoidal combined substrate grooves (301) are formed in the bottom surface of the substrate (3), gas vents are formed between the substrate grooves (301), a contact area between the substrate (3) and concrete is increased, a gauge stop block (11) is arranged on the side, close to a track(12), of the top of the substrate (3), a height adjustment cushion block (4) is arranged on the outer side of the gauge stop block (11), and elastic strips (8) are arranged at the tops of the gauge stop block (11) and the height adjustment cushion block (4); and the positions, corresponding to the elastic strips (8), of the substrate (3) are provided with elastic strip installation grooves (302),and the position, corresponding to the height adjustment cushion block (4), of the substrate (3) is provided with a height adjustment cushion block seat (303). According to the modern streetcar fastener system, the more concrete flows into a cavity in the bottom of the substrate, it is ensured that the concrete fully enters the substrate, after construction is completed, the substrate and the lower concrete form a whole, overall bearing capacity of the fastener system is improved, and loads from vehicles are resisted better.
Owner:CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP

Thermal weight loss automatic detection device and system

The invention provides an automatic thermal weight loss detection device and system, and the device comprises a crucible which comprises a crucible cover and a crucible seat, and the crucible cover comprises a cover body and two limiting protrusions protruding outwards from the two sides of the cover body; the interior of the crucible seat is used for containing a sample to be detected, the upper part of the crucible seat is matched with the crucible cover, and at least two similar G-shaped sliding chutes matched with the limiting bulges are formed in the upper part of the crucible seat; the supporting piece comprises a fixed seat, a long supporting column which is arranged on the fixed seat, is hollow inside and is provided with vent holes in the side wall, and a limiting claw which is arranged at the top of the long supporting column, is matched with the crucible and is used for limiting the crucible suspension above the balance weighing disc and in the central area of the long supporting column; the limiting claw comprises a limiting seat and a plurality of limiting columns, the limiting seat corresponds to the bottom of the crucible, the corresponding area of the limiting seat is hollowed out, the limiting columns are arranged on the limiting seat at intervals and define a restraining space for restraining the position of the crucible, and the interval areas between the limiting columns correspond to the edges of the main body part of the crucible seat; a crucible connecting piece; a telescopic driving member; a rotating member; and a side pressure sensor.
Owner:HUAZHONG UNIV OF SCI & TECH

Welding copper column for PCB

The invention relates to the technical field of LED (light-emitting diode) display, and provides a welding copper column for a PCB (printed circuit board), which comprises a column body and a base plate part, the base plate part is arranged at the fitting end of the column body, the end surface of the fitting end of the column body is concave, at least one opening is formed in the base plate part, and the opening is communicated with the outside and the concave. More tin can be connected with the fitting end by arranging the concave part on the base plate part of the column body, liquid tin can conveniently flow in and flow out by arranging the opening, the liquid tin can be ensured to fully circulate at the bottom of the copper column, and the tin is fully contacted with the fitting end, so that the stability of the copper column is enhanced.
Owner:SHENZHEN INFILED ELECTRONICS
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