Abstract: A bathtub massage nozzle includes a nozzle body, a nozzle body Venturi core, a bushing and a nozzle surface cover. The bathtub massage nozzle reduces the dilution and loss of bubbles in the process of water flow transmission. Therefore, the water flow can form dense bubbles in the nozzle, which are guided by the nozzle surface cover and released along a specific area of the bathtub. The massage water flow released by the nozzle surface cover carries more dense bubbles, which can enhance the strength and effect of massage. The nozzle surface cover and the bushing can be conveniently rotated to adjust the direction of the surface cover. Thus, different surface covers in the same bathtub can be kept in the same direction. In addition, position of the water outlet hole changes during rotation of the nozzle surface cover. Thus, the user can adjust position of the massage water outlet as needed.

Abstract: A bathtub massage nozzle with a switch function includes a nozzle body, a nozzle core seat and a nozzle surface cover. The nozzle core seat is provided with sealing rubber rings between a core seat water inlet hole and core seat air inlet holes, and at a side away from the core seat water inlet hole. The sealing rubber rings are compressed against an inner wall surface of the nozzle body, so that both ends of the nozzle body are hermetically connected, thereby forming a sealed air cavity with a better airtightness. When air flows in from the air inlet, the air entering from the air inlet passes through the air cavity and is mixed with water through the core seat air inlet holes, so that the Venturi effect is enhanced, and the air can have a greater acceleration and pressure, thereby creating more bubbles and stronger massage effect.

Abstract: A bathtub massage nozzle with switch function and good massage effect is provided. When in use, by aligning a core seat water inlet hole with a water inlet, water enters the nozzle core seat from the water inlet, and at the same time, the air is introduced from an air inlet, so that the air reaches a closed air cavity, and then the water flows out from the other end of the nozzle core seat to reach a gap between the nozzle core seat and the nozzle surface cover; at the same time, the gas is also discharged from an air outlet on the side of the nozzle core seat far away from the core seat water inlet hole through the closed air cavity, which reduces the dilution and loss of bubbles in the process of water flow transmission, and enables the water flow to form dense bubbles.

Abstract: An easy-to-install bathtub massage nozzle includes a nozzle body and a nozzle core seat. The nozzle core seat is inserted through an accommodating through hole of the nozzle body, and then the nozzle core seat is pressed, so that an annular rubber ring on the nozzle core seat is squeezed and compressed. When pressed to an annular groove on the nozzle body, the annular rubber ring returns to its original shape and expands into the annular groove, so that the nozzle core seat and the nozzle body can be tightly connected. The bathtub massage nozzle greatly simplifies the installation process, and users only need to insert and press easily to complete the installation without complicated rotation and tightening operations. In addition, the combination of the annular groove and the annular rubber ring also effectively improves the sealing performance, so that the water outlet effect is improved.

Abstract: A massage nozzle includes a nozzle body Venturi core having two ends welded with an inner side wall of a water inlet end of a nozzle body, and an end of the nozzle body Venturi core away from a water spraying end is welded between a water inlet and an air inlet, and the side wall of the nozzle body Venturi core is provided with air inlet through holes. The welding of the two ends of the nozzle body Venturi core achieves improved airtightness of the air cavity between the nozzle body Venturi core and the nozzle body. The air entering the air inlet passes through the air cavity and is mixed into the water through the air inlet through holes, which enhances the Venturi effect and enables the air to have a stronger acceleration and pressure when flowing through the nozzle, thus forming more bubbles and stronger massage effect.

Abstract: Disclosed are a power battery, a busbar component of the power battery and a method thereof. The busbar component comprises a busbar assembly. The busbar assembly comprises a busbar body, a first insulating layer and a second insulating layer. The busbar body is connected with one side of the first insulating layer facing a battery cell module, is integrated with a sampling line, and the sampling line is manufactured by a mechanical cutting and unloading process. The second insulating layer is attached to the first insulating layer and covers the sampling line, and the second insulating layer and the busbar body are on a same side of the first insulating layer and are arranged in a staggered manner. The cost is lowered, the process cycle of product is shortened, the production efficiency is improved, the applicability gets wider, the production process and the assembling process are simplified.

Abstract: A water curtain system with switch, comprising: a main housing, which is integrally formed, comprises a main cavity structure in the middle, a lower part of the main cavity structure is connected to a water inlet pipe part with an inner diameter smaller than that of the main cavity structure, the connecting port between the main cavity structure and the water inlet pipe part is a gate end, an upper part of the main cavity structure is integrally provided with a water outlet base, and an upper part of the water outlet base is provided with an upper cover; a threaded pressing rod, clamped in the main cavity structure above the gate end through a clamping structure, and a lower end of the threaded pressing rod is provided with a water-sealing washer; a pressing rod driver, which drives the threaded pressing rod to rise and fall through threaded cooperation.

Abstract: A massage nozzle includes a nozzle housing and a nozzle core detachably attached in the nozzle housing. The nozzle housing is split-type and includes a cover mounted in a hole of a wall of a hot tub, a nozzle seat and a fastener. The cover includes an end ring and a side wall extending from the end ring. The side wall is conformed with the hole. The nozzle seat includes an inlet and a spray end which has a surface conformed with the side wall. The nozzle seat passes through and detachably connects with the cover. The outer circumferential surface of the spray end contacts with an inner surface of the side wall. The fastener is detachably sleeved on the outer circumferential surface of the nozzle seat and cooperates with the cover to fix the nozzle seat to the hot tub. The installation is convenient and the cost is reduced.

Abstract: The present disclosure provides an electric water diverter, which includes a controller, a brushless DC motor, a core and a T-shaped body. The controller is electrically connected to a fixed Hall PCB circuit board and the brushless DC motor in turn. The brushless DC motor has a rotating shaft detachably connected to the core via a connector, which is also embedded with a magnet cooperating with the Hall PCB circuit board. The Hall PCB circuit board obtains a relative position signal of the rotating shaft through Hall induction and feeds the relative position signal back to the controller. A user controls the brushless DC motor to perform phase rotation through the controller and drive the connector and the core to selectively rotate forward or backward relative to the T-shaped body. Thereby, stepless adjustment of water flow from water outlet is achieved.

Abstract: Disclosed are a power battery, a busbar component of the power battery and a method thereof. The busbar component comprises a busbar assembly. The busbar assembly comprises a busbar body, a first insulating layer and a second insulating layer. The busbar body is connected with one side of the first insulating layer facing a battery cell module, is integrated with a sampling line, and the sampling line is manufactured by a mechanical cutting and unloading process. The second insulating layer is attached to the first insulating layer and covers the sampling line, and the second insulating layer and the busbar body are on a same side of the first insulating layer and are arranged in a staggered manner. The cost is lowered, the process cycle of product is shortened, the production efficiency is improved, the applicability gets wider, the production process and the assembling process are simplified.

Abstract: The present disclosure provides an electric water diverter, which includes a controller, a brushless DC motor, a core and a T-shaped body. The controller is electrically connected to a fixed Hall PCB circuit board and the brushless DC motor in turn. The brushless DC motor has a rotating shaft detachably connected to the core via a connector, which is also embedded with a magnet cooperating with the Hall PCB circuit board. The Hall PCB circuit board obtains a relative position signal of the rotating shaft through Hall induction and feeds the relative position signal back to the controller. A user controls the brushless DC motor to perform phase rotation through the controller and drive the connector and the core to selectively rotate forward or backward relative to the T-shaped body. Thereby, stepless adjustment of water flow from water outlet is achieved.

Abstract: The present disclosure relates to a luminous nozzle and a nozzle base thereof. The nozzle base includes a nozzle base body and a fastener. The fastener cooperates with a cover to clamp the nozzle base body for installation and fixation. The nozzle base body includes a water inlet portion and a water spray portion communicated with each other. A predetermined number of lamp holes are provided transversely on an outer periphery of the water inlet portion. The luminous nozzle includes a nozzle core and a predetermined number of SMD LED lamps and further includes the above-mentioned nozzle base, with the nozzle core installed in the nozzle base body and the SMD LED lamps detachably installed in the lamp holes. This luminous nozzle has high light utilization efficiency and the SMD LED lamps have a stable installation structure and is easy to install and maintain.

Abstract: The present disclosure provides an electric water diverter, which includes a controller, a brushless DC motor, a core and a T-shaped body. The controller is electrically connected to a fixed Hall PCB circuit board and the brushless DC motor in turn. The brushless DC motor has a rotating shaft detachably connected to the core via a connector, which is also embedded with a magnet cooperating with the Hall PCB circuit board. The Hall PCB circuit board obtains a relative position signal of the rotating shaft through Hall induction and feeds the relative position signal back to the controller. A user controls the brushless DC motor to perform phase rotation through the controller and drive the connector and the core to selectively rotate forward or backward relative to the T-shaped body. Thereby, stepless adjustment of water flow from water outlet is achieved.

Abstract: The present disclosure provides an electric water diverter, which includes a controller, a brushless DC motor, a core and a T-shaped body. The controller is electrically connected to a fixed Hall PCB circuit board and the brushless DC motor in turn. The brushless DC motor has a rotating shaft detachably connected to the core via a connector, which is also embedded with a magnet cooperating with the Hall PCB circuit board. The Hall PCB circuit board obtains a relative position signal of the rotating shaft through Hall induction and feeds the relative position signal back to the controller. A user controls the brushless DC motor to perform phase rotation through the controller and drive the connector and the core to selectively rotate forward or backward relative to the T-shaped body. Thereby, stepless adjustment of water flow from water outlet is achieved.

Abstract: The present disclosure relates to a luminous nozzle and a nozzle base thereof. The nozzle base includes a nozzle base body and a fastener. The fastener cooperates with a cover to clamp the nozzle base body for installation and fixation. The nozzle base body includes a water inlet portion and a water spray portion communicated with each other. A predetermined number of lamp holes are provided transversely on an outer periphery of the water inlet portion. The luminous nozzle includes a nozzle core and a predetermined number of SMD LED lamps and further includes the above-mentioned nozzle base, with the nozzle core installed in the nozzle base body and the SMD LED lamps detachably installed in the lamp holes. This luminous nozzle has high light utilization efficiency and the SMD LED lamps have a stable installation structure and is easy to install and maintain.

Abstract: The present application relates to a steel for grade R6 offshore mooring chain for use in anchoring and mooring floating bodies with cathodic protection: the chemical composition are C 0.18˜0.24%, N 0.006˜0.024, P 0.005˜0.025, S?0.005, Si 0.15˜0.35, Mn 0.20˜0.40, Cr 1.40˜2.60, Ni 0.80˜3.20, Mo 0.35˜0.75, Cu?0.50, Al?0.02, Ti?0.005, V 0.04˜0.12, Nb 0.02˜0.05, Ca 0.0005˜0.004, O?0.0015, H?0.00015, the balance is Fe: the total content of alloy ?M=(Si+Mn+Cr+Ni+Mo+Cu), 3.4<?M?6.8; the total content of microalloy ?MM=(Ti+Al+Nb+V), 0.065??MM?0.194. The corrosion potential is adjusted to prevent hydrogen embrittlement caused by cathodic overprotection on the basic premise of maintaining the strength, toughness and low corrosion rate of the steel.

Abstract: A massage nozzle includes a nozzle housing and a nozzle core detachably attached in the nozzle housing. The nozzle housing is split-type and includes a cover mounted in a hole of a wall of a hot tub, a nozzle seat and a fastener. The cover includes an end ring and a side wall extending from the end ring. The side wall is conformed with the hole. The nozzle seat includes an inlet and a spray end which has a surface conformed with the side wall. The nozzle seat passes through and detachably connects with the cover. The outer circumferential surface of the spray end contacts with an inner surface of the side wall. The fastener is detachably sleeved on the outer circumferential surface of the nozzle seat and cooperates with the cover to fix the nozzle seat to the hot tub. The installation is convenient and the cost is reduced.

Abstract: Disclosed is an anti-counterfeiting method based on a feature of a surface texture image of a product, including: obtaining a tag with a unique identity; implanting the tag into a product identification area with a unique texture feature on a surface of the product; collecting an image of the product identification area on the surface of the product implanted with the tag as an official product image using an image acquisition device; adopting a computing method of an eigenvalue of a multi-partition texture image to acquire a feature of the official product image; authenticating a user product image to be identified using a matching method of the texture image eigenvalue of similar partitions based on the identity of an image of the tag and the feature of the official product image to determine an authenticity.

Abstract: The present invention relates to a high-hardenability, medium-carbon, low-alloy round steel for fasteners, the chemical constituents by mass percentage are as follows: C: 0.36˜0.44%, Si: 0.15˜0.40%, Mn: 0.80˜1.00%, Cr: 1.00˜1.15%, Mo: 0.05˜0.25%, Ni: 0.05˜0.25%, Cu: 0.05˜0.25%, Al: 0.015˜0.050%, B: 0.0010˜0.0050%, Ti: 0.020˜0.050%, the balance is Fe; the maximum diameter of the round steel is 65 mm. The manufacturing process are as follows: the raw materials are processed, in sequence, by converter smelting, LF refining, RH/VD degassing to obtain molten steel, feeding Ti wires and ferroboron, continuous casting, rolling into the bar, obtaining the quenched and tempered round steel after quenching and tempering treatment; the quenched and tempered round steel is able to be directly used in processing fasteners which meet ISO 898-1 standard for grade 10.9, such as bolts and the like.

Abstract: A power-adjustable RF (radio frequency) output circuit is disclosed, which includes a RF frequency source transformer, wherein: one output end of the RF frequency source transformer is connected with a gate of a power amplifier module, another output end of the RF frequency source transformer is connected with a gate bias voltage control circuit; a source of the power amplifier module is connected with ground; the gate of the power amplifier module is connected with a resistor which is connected with ground, a drain of the power amplifier module is connected with a fixed voltage DC (direct current) power supply and also connected with a RF filtering network for outputting a RF power through the RF filtering network.