30results about How to "Reduced material required" patented technology

The invention relates to the technical field of photovoltaic packaging materials, and discloses a black high-reflection infrared integrated packaging material and a preparation method thereof, and the black high-reflection infrared integrated packaging material comprises a bonding packaging layer, a light management layer, a mechanical transition layer and an insulating supporting layer which are arranged from top to bottom; all the layers are subjected to integrated melting and co-extrusion to obtain the packaging material; the first melting point of the bonding packaging layer is 70-100 DEG C, the second melting point of the bonding packaging layer is 110-130 DEG C, and the content of the cross-linked gel after irradiation is 5-30%; the melting point of the light management layer is 70-130 DEG C, the light management layer comprises a perylene black surface layer and a white light reflecting layer which are sequentially arranged, the visible light absorptivity of the perylene black surface layer is larger than or equal to 90%, and the infrared light transmittance of the perylene black surface layer is larger than or equal to 50%; the melting point of the mechanical transition layer is 90-130 DEG C; and the melting point of the insulating support layer is 120-180 DEG C. According to the invention, the high transmittance of infrared light is maintained while the deep black appearance is realized, the secondary absorption of the infrared light can be realized, and the overall efficiency of the assembly is improved.

The application relates to a bag-in-bag-out filtering device, which relates to the technical field of biological safety and comprises the following: a ventilation duct is arranged in a box body; an air inlet and an air outlet are arranged on the box body and communicate with the ventilation duct; one or more filters are movably arranged in the ventilation duct; an opening is arranged on the box body and communicates with the ventilation duct; a sealing door is detachably arranged on the opening; a detection piece is arranged on one side of the box body close to the sealing door; and a frame body is arranged in the box body and abuts against the filter; the box body comprises a main body, an air inlet shell, an air outlet shell and a cover plate, and the ventilation duct is formed between the main body and the cover plate; the frame body and the main body are integrally bent and formed, one end of the frame body is embedded in the main body, and the other end of the frame body is bent and connected with the end of the main body. Compared with a traditional filtering box, the filtering device is integrally formed, welding leakage is avoided, the filtering device is not easy to deform, good sealing performance and pressure bearing strength are maintained, and the cost is reduced.

The embodiment of the utility model provides a battery and a battery pack. The battery comprises a shell, wherein an accommodating cavity with an opening is formed in the shell; the roll core is arranged in the accommodating cavity, and a tab is arranged at the end part, close to the opening, of the roll core; the cover plate comprises a pole, a metal cover frame and an insulating part; the metal cover frame covers the opening in a sealing manner and is connected with the shell; a pole hole is formed in the metal cover frame in a penetrating manner; the pole penetrates through the pole hole and is connected with the tab; the insulating part is wound on the peripheral side of the pole; a first connecting piece is arranged on the outer side of the pole, a second connecting piece is arranged on the inner side wall of the pole hole, and the insulating piece is respectively connected with the first connecting piece and the second connecting piece. Therefore, the connection tightness between the pole and the shell can be ensured, and the overall strength of the battery is improved.

The invention belongs to the field of heat absorption towers, and provides a molten salt pipeline system in a heat absorption tower and the heat absorption tower. Wherein the molten salt pipeline system in the heat absorption tower comprises a molten salt pipeline, a support hanger and a combined support steel beam; the combined supporting steel beam comprises a main beam and a supporting beam; the molten salt pipeline comprises an upper tower cold molten salt pipeline and a lower tower hot molten salt pipeline; the upper tower cold molten salt pipeline and the lower tower hot molten salt pipeline are respectively formed by connecting a plurality of pi-shaped bends end to end; the pi-shaped bend is formed by connecting two bent bends end to end; the bent bend is composed of a first vertical pipe, a first elbow, an inclined pipe, a second elbow and a second vertical pipe which are connected in sequence; the angle of the first elbow and the angle of the second elbow are both smaller than or equal to 75 degrees. The upper tower cold molten salt pipeline and / or the lower tower hot molten salt pipeline are rooted on the corresponding combined supporting steel beams through the supporting hangers; and the upper tower cold molten salt pipeline and the lower tower hot molten salt pipeline are arranged between the main beam and the cylinder wall of the heat absorption tower.

The invention relates to the technical field of electronic components, and discloses a multi-coil series-parallel integrated inductor production process which comprises the following steps: S1, coil design and material selection: selecting a material with good conductivity; s2, coil winding and T-core pressing: winding the designed coil on a T-shaped magnetic core, and fixing the coil on the T-shaped magnetic core to form an independent structure; s3, forming mold arrangement and coil arrangement: arranging a plurality of coils in a forming mold according to a preset series or parallel connection mode; s4, coating and hot press molding of the magnetic material: coating the magnetic material in the mold; s5, carrying out a surface treatment and electroplating process: carrying out insulating coating treatment on the surface of the inductor, and carrying out electroplating; and S6, performance detection and quality control. The inductance value and the current bearing capacity are flexibly adjusted in a series-parallel connection mode, the inductor is made to adapt to different application scenes, for example, a high-inductance-value filter and a high-current power management system, and more design choices are provided.

The utility model relates to the technical field of pipe machining, and one embodiment of the utility model provides an automatic welding mechanism of a pipe welder, which comprises a feeding box, a welding table is arranged on one side of the feeding box, a supporting welding assembly is arranged on the welding table, and a feeding cleaning assembly is arranged in the feeding box; a handheld handle is arranged on the downward pressing frame, a falling opening is formed in the welding table, a collecting cover is arranged on the falling opening, and a collecting opening is formed in the lower end of the collecting cover. By means of the technical scheme, the problems that in the prior art, in the traditional welded pipe production process, manual welding occupies a large proportion, many defects exist in the mode, the requirements of manual welding for the technical level and the working state of welders are extremely high, the welding quality is uneven due to the operation habits and skill differences of different welders, and the welding quality is poor are solved. The technical problems that multiple welding defects such as air holes, slag inclusion, incomplete penetration and undercut occur in the welding process of the welded pipe, the defects not only reduce the strength and the sealing performance of the welded pipe, but also possibly cause potential safety hazards, and the service life of the welded pipe is shortened are solved.

The invention relates to the technical field of cell culture detection, and specifically discloses a method and system for in vitro culture detection of mesenchymal stem cells and hematopoietic stem cells. The method comprises: analyzing a cell culture environment and culture medium components, determining a reference evaluation value for cell culture detection, judging whether the culture of mesenchymal stem cells and hematopoietic stem cells is qualified, analyzing unqualified mesenchymal stem cells and hematopoietic stem cells to obtain characteristic values ​​of mesenchymal stem cells and hematopoietic stem cells, and determining an adjustment plan for the culture of unqualified mesenchymal stem cells and hematopoietic stem cells based on the characteristic values ​​of the mesenchymal stem cells and the hematopoietic stem cells. The invention solves the problems that traditional culture of mesenchymal stem cells and hematopoietic stem cells lacks comprehensive and unified culture and detection standards, and that the culture adjustment plan has insufficient adaptability, is helpful to maintain the healthy state and function of cells, and can also improve the success rate and efficiency of cell culture.

The present invention relates to a method for manufacturing a circuit board by processing electroplated holes and anti-etching patterns with laser, drilling holes and depositing thin metal layers on the holes and board surfaces, attaching non-photosensitive masking films, laser removing the masking layers covering the hole walls to expose the hole walls, only electroplating and thickening the conductive layer in the holes, only electroplating metal anti-etching agents in the holes, then using laser to make anti-etching patterns, etching to make conductive patterns, applying non-photosensitive solder resists on non-circuit areas, using laser to make solder resist patterns at the assembly site, and cleaning and solderability treatment of the welding area surface; the present invention can optimize and shorten the manufacturing process of circuit boards as a whole, using non-photosensitive materials as anti-plating materials, only electroplating and thickening the conductive layer in the holes, only electroplating anti-etching and solderable metals on the hole walls, using laser to manufacture electroplated hole patterns, anti-etching patterns, and solder resist patterns in steps, with fewer steps, lower costs, and manufacturing more sophisticated circuit boards, and improving quality and efficiency. It is suitable for large-scale production of various circuit boards or circuit board samples and small-batch, multi-variety production.

The invention relates to the technical field of soft robots and software driving, in particular to a bionic ornithopter with bidirectional stay wires driven by dielectric elastomers. The problems that an existing bionic flapping wing is insufficient in control and poor in bionic flight stability are solved by aiming at the defects of an exploration and control technology of a micro material of an existing bionic robot. According to the technical scheme, a pair of bionic flapping wings are symmetrically arranged on the two sides of the upper portion of a power bin; a driving device is arranged in the power bin and is composed of six dielectric elastomer units which annularly surround an insulating tube and a compression spring which are coaxially arranged, a first dielectric elastomer clamp is arranged on the rear side of the driving device to divide the driving device into a front part and a rear part, and the dielectric elastomer units are formed by rolling thin films. The front-section dielectric elastomer is coated with an electrode, the rear-section dielectric elastomer is coated at intervals to form a lower semicircle coated electrode, and the upper semicircle is not coated; and a dielectric elastomer clamp II and a dielectric elastomer tail clamp are respectively arranged at the front end and the rear end of the driving device.

The device is characterized in that the device comprises a box body and a supporting plate, the box body is divided into a collecting part and a breeding part by the supporting plate, a feeding area is arranged on the inner side wall of the box body and located in the breeding part, an opening is formed in the supporting plate, and the feeding area is located in the breeding part. The supporting plate is provided with an oviposition medium covering the opening, the oviposition medium is provided with a hole through which eggs can penetrate, in the culture state, the supporting plate is located at the top of the culture part, imagoes are located at the bottom of the culture part, in the egg taking state, the collecting part is located below the culture part, and in the egg taking state, the collecting part is located below the collecting part. According to the silverfish egg collecting and processing device, efficient collection of synchronously developed eggs is achieved, materials and time consumed by a traditional collecting mode are effectively reduced, and fresh silverfish eggs are efficiently collected and fixed for embryonic research.

The utility model relates to a prefabrication anti-seismic electromechanical comprehensive support, and relates to the technical field of anti-seismic supports, the prefabrication anti-seismic electromechanical comprehensive support comprises two vertical rods, a plurality of cross arms and a plurality of inclined struts, the vertical rods are relatively fixed on a top wall, the plurality of cross arms are longitudinally and sequentially fixed between the two vertical rods, the cross arms are used for fixing electromechanical pipelines, one end of each inclined strut is fixed on the corresponding vertical rod, and the other end of each inclined strut is fixed on the corresponding vertical rod. The other end of the inclined strut is fixedly connected with a wall. By the adoption of the structure, the lateral or longitudinal inclined struts are arranged according to installation space and standard requirements, and the bearing and anti-seismic requirements are met. Meanwhile, due to the fact that the multiple cross arms are arranged, the pipelines are arranged in order, the problems that the centralized installation space of the pipelines is limited and the installation space of the anti-seismic support is limited are solved, the space is saved, the construction efficiency is improved, later pipeline maintenance is facilitated, later expansion is also facilitated, and waste of materials and manpower is reduced to a certain degree. According to the pipeline arrangement elevation, the pipeline prefabrication and installation sequence is reasonably organized before construction, and project construction organization is facilitated.

The utility model relates to a technical field of hot strip semi-finished product forming device, especially a kind of semi-finished product forming device for hot strip, including base, conveying assembly, drive assembly, cutting roller, cutting motor, cutting blade, mounting bracket, rotating seat, electric push rod and sliding seat;The inside of base is provided with conveying assembly, and the side of base is provided with drive assembly, and the top of base is provided with mounting bracket, and the inside of mounting bracket is provided with cutting roller, and the outside of cutting roller is provided with cutting blade, and the top of mounting bracket is provided with cutting motor, and the bottom of mounting bracket is provided with rotating seat, and the top of rotating seat is provided with electric push rod, and one end of electric push rod is provided with sliding seat;The utility model is by increasing the mode of angle adjusting structure, so that the device can be more conveniently adjusted to the slicing angle of hot strip semi-finished product, and simultaneously the slicing knife is designed as split type, so that the tool can be replaced individually when damaged, to reduce the material and time waste generated by maintenance.

The present invention relates to a solar light collecting device capable of adjusting the angle of a light collector by using an inclined portion having a slidable structure. In the present invention, when one arm structure of the inclined portion slides along the sliding frame portion, the other arm structure slides on the rear surface of the condenser and causes an inclined motion to adjust the angle of the condenser. Meanwhile, the angle of the reflector reflecting the parallel light is automatically adjusted according to the change of the angle caused by the sliding motion of the inclined part. Therefore, according to the structure of the present invention, tilting movement of the condenser can be performed with the diameter of the incident light mirror as the central axis. Therefore, the area required for tilting the condenser can be significantly reduced, and miniaturization and high integration of the device can be achieved. In addition, since the number of materials for light condensation and movement of the materials can be minimized, the device can achieve light weight. Further, since the cleaning portion is mounted externally, an operator does not need to perform a cleaning operation and move for cleaning, and thus excellent operational convenience and reliability can be obtained. In addition, due to low manufacturing and maintenance cost, the equipment has economic benefits.

The invention discloses a multi-role integrated common mode choke for a Marx generator. The multi-role integrated common mode choke comprises a foil type capacitive winding and a trigger switch. The foil type capacitive winding is formed by alternately stacking metal foils and insulating films and rolling the metal foils and the insulating films in parallel in the circumferential direction, the insulating films are arranged between the adjacent metal foils, and the metal foils and the insulating films jointly form an energy storage capacitor; each metal foil is a winding, two ends of each foil type capacitive winding are respectively provided with a lead, the head end and the tail end of each foil type capacitive winding are dotted terminals, and when the foil type capacitive windings work in a differential mode state, the foil type capacitive windings are connected with a charging power supply through low impedance. Current flows in from the dotted terminal of one foil type capacitive winding and flows out from the dotted terminal of the other foil type capacitive winding. As a basic unit, the multi-role integrated common mode choke can replace a traditional charging and discharging resistor, an energy storage capacitor and a trigger switch, is cascaded to form the Marx generator, is short in charging time, high in charging and discharging efficiency, capable of working at high repetition frequency, modularized and compact in structure.

The invention relates to the technical field of automobile trunks, in particular to a trunk storage box and a vehicle. The trunk storage box comprises a storage box body arranged on a rear vehicle body, and a first rail assembly for installing objects is arranged on the upper portion of the storage box body. Wherein at least part of the side supporting walls of the storage box are configured to be capable of supporting the bottom of the first rail assembly; the storage box of the trunk has good storage capacity and storage function, and the utilization rate of the internal space of the trunk is increased.

An aircraft tail section comprises: - a vertical tail; - an aft fuselage section attached to the vertical tail and comprising a skin and internal stiffening members; - a horizontal tail comprising two lateral torsion boxes and a frame structure between the two lateral torsion boxes, the frame structure comprising a front spar, a rear spar and two ribs extending between the front spar and the rear spar, and each rib being adjacent a lateral torsion box. The frame structure encloses a portion of the vertical tail along a spanwise direction of the vertical tail. The aircraft tail section comprises an attachment assembly attaching the frame structure to the aft fuselage section, the attachment assembly crossing the skin and extending between the internal stiffening members of the aft fuselage section and the frame structure.

The invention relates to the technical field of hollow glass, and discloses curved hollow glass and a preparation method thereof.The curved hollow glass comprises a first glass layer, a second glass layer, a diaphragm and spacing bars, the diaphragm is arranged between the first glass layer and the second glass layer, and the first glass layer, the second glass layer and the diaphragm are arranged at intervals through the spacing bars; the first glass layer, the diaphragm and the second glass layer are sequentially arranged at intervals to form a multi-cavity hollow glass structure; according to the curved-surface hollow glass, the multiple cavities are formed at intervals through the diaphragms, the overall glass thickness is reduced, the weight and materials are reduced, and the production and transportation cost is reduced.

This utility model discloses a pipeline rescue and safety device, belonging to the field of pipeline repair. It includes a pipe tube with a main baffle fixedly connected to its top. A sealing gasket is placed between the pipe tube and the main baffle. A secondary baffle, coaxially arranged with the main baffle, is connected to the top of the main baffle via connecting bolts. The main baffle has a first drain port, and the secondary baffle has a second drain port corresponding to the first drain port and of the same size. The secondary baffle can rotate around the connecting bolts, and the rotation of the secondary baffle controls the opening and closing of the first and second drain ports. A sealing ring groove is provided on the main baffle at the edge of the first drain port. This pipeline rescue and safety device replaces traditional methods of using airbags and bricks to block water, avoiding safety accidents caused by water leakage due to airbag rupture, and also solving the accident risk caused by sudden water gushing out when removing brick plugs, thus ensuring the safety of personnel working in manholes or pipes.

The technical problem to be solved by the utility model is to provide the oil inlet cooling oil path structure for the oil-cooled motor, and the oil inlet cooling oil path structure utilizes the casing and the end cover to form a combined oil inlet channel, so that the material and the volume of the rear end cover can be reduced, and the complexity and the cost of processing and casting are reduced. The oil inlet cooling oil way structure comprises a rear end cover, a machine shell, an oil storage shell, a cooler and an oil pump. A first oil groove is formed in the rear end cover, a second oil groove is formed in the machine shell, the first oil groove and the second oil groove form a closed cooling oil channel, the oil pump conveys cooling oil into the cooler through the cooling oil channel, and the oil grooves formed in the machine shell and the rear end cover form the cooling oil channel so that the material and the size of the rear end cover can be reduced. And the interchangeability of parts can be improved, the maintenance cost is reduced, the structure is compact, the design is simple, and the design complexity and the machining cost are reduced.

The application belongs to the technical field of architectural acoustics construction, and discloses a holographic acoustic module arc roof installation construction method, which completes curved surface partition and prefabrication through a 1:1 three-dimensional BIM model, generates a deviation analysis report by combining three-dimensional laser point cloud data comparison, automatically compensates installation errors through an AI algorithm, matches grid positioning and angle reference double positioning, and realizes real-time inclination angle feedback, so that the module installation deviation is controlled in a very small range, the installed module does not need to be removed for rectification, construction cost and construction period loss are reduced, arc curvature is matched, the broadband sound absorption effect of the holographic acoustic module is ensured, the curved surface roof installation precision and acoustic basic performance are synchronized to reach the standard, the automatic engagement of concave-convex tenon and groove between modules, magnetic sheet adsorption, elastic acoustic sealing strip sealing, the control of the splicing gap within 0.5 mm, the avoidance of sound diffraction and reflection interference, and the attenuation of vibration transmission through the butyl rubber acoustic isolation layer and the buffer assembly.

The utility model discloses an energy-saving refractory lining of a rotary kiln, which comprises a cylinder body steel plate 5, a heat insulation layer and refractory liners 1 and 3, the refractory liners are composed of a fixed base body 3 and a special-shaped surface body 1, a T-shaped groove 4 is arranged on the inner surface of the fixed base body, an inverted T-shaped protrusion 2 is arranged on the bottom surface of the special-shaped surface body 1, and the T-shaped groove 4 is arranged on the bottom surface of the special-shaped surface body 1. The special-shaped surface body is inserted into the T-shaped groove 4 in the inner surface of the fixing base body through the inverted-T-shaped protrusion 2, the groove 4 and the protrusion 2 are matched in a wedge shape, the fixing base body 3 is fixedly installed on the surface of the heat insulation layer through the fixing hole, materials are driven to turn over through the special-shaped surface body, the materials are prevented from sliding, the materials are forced to turn over, and the purpose that the materials are evenly heated is achieved.

The invention discloses a composite spinning box for superfine denier ES fiber production, the composite spinning box comprises a box body and a spinning assembly, the box body is provided with a spinning chamber, and the spinning assembly is installed in the spinning chamber; the spinning assembly comprises a spinneret plate and a partition plate; the spinneret plate comprises a first plate body and a second plate body, the first plate body and the second plate body are connected into a whole, a skin component circulation gap is reserved between the first plate body and the second plate body, the first plate body is provided with a composite spinneret hole, a core spinneret body is arranged on the side, away from the first plate body, of the second plate body, and the core spinneret body and the installation hole are kept concentric. The core spinneret body is provided with a core spinneret hole communicated with the composite spinneret hole; the spinneret plate is located on one side of the partition plate, the partition plate is provided with a skin component supply hole and a core component supply hole, and the core component supply hole communicates with a gap between the second plate body and the partition plate; and the spinneret plate is provided with a skin component drainage hole communicated with the skin component supply hole. According to the spinning assembly, the coaxiality of the skin layer spinning channel and the core layer spinning channel in the spinning assembly can be improved.

The utility model discloses a waterproof heat preservation bag, which belongs to the technical field of heat preservation bags and comprises a bag body and a bag bottom, the bag body comprises liner cloth, first outer surface cloth and second outer surface cloth, two sides of the liner cloth are connected after the liner cloth is wound, the lower end of the liner cloth is connected with the bag bottom, and a first accommodating space is formed between the liner cloth and the bag bottom. The first outer surface cloth is connected with a sealing assembly, the two sides of the lower end of the second outer surface cloth are connected after the wrapping bottom is wound, the lower end of the second outer surface cloth is connected with the wrapping bottom side edge, the lower end of the first outer surface cloth is connected with the upper end of the second outer surface cloth, and a second containing space is formed among the first outer surface cloth, the second outer surface cloth and the liner cloth. A first heat preservation body is arranged in the second containing space. According to the utility model, unnecessary connecting structures and materials are reduced; liquid in the first accommodating space does not enter the middle layer; the magnetic-attraction-strip-sealed first containing space is arranged on the first outer surface cloth, the structure is simple, sealing and opening are convenient, and the sealing effect is good.

The utility model provides a metering mechanism for mold blank processing, which comprises a cutter handle, a connecting shaft is locked at the clamping position of the cutter handle, a fixing block is fixed at the right end of the connecting shaft, the fixing block is connected with a U-shaped locking buckle through a connecting assembly, a dial indicator locked through a locking bolt is arranged at the locking buckle in a penetrating manner, and the dial indicator is connected with the cutter handle. The connecting assembly can adjust the height, the length and the horizontal angle of the dial indicator. The utility model has the advantages that the dial indicator is connected to the old cutter handle, and the cutter handle is arranged in the cutter crown during metering, so that the service life of the dial indicator is greatly prolonged.

The invention discloses a compensation chain guide device, and belongs to the technical field of mechanical engineering. The compensation chain guiding device comprises three rolling wheels, the rolling wheels are sequentially connected end to end, the rolling wheels are rotationally and symmetrically distributed, a connecting piece is arranged on one side of each rolling wheel, a round pipe is fixed to the bottom of each connecting piece and penetrates into a second sleeve, the top face of each second sleeve abuts against the bottom face of the corresponding connecting piece, and the top face of each second sleeve abuts against the bottom face of the corresponding connecting piece. And a first sleeve is arranged between the circular pipe and the second sleeve. The problems that in the prior art, four-roller design is complex, the occupied space is large, large noise and vibration are likely to be generated, and load distribution is uneven are solved. The number of the idler wheels is reduced from four to three, the overall structure is simplified, the production cost is reduced, the stability is improved, the upper round pipe and the lower second sleeve are connected through the first sleeve made of plastic, the drawing force of the idler wheels can be controlled to be a design value, and the overall stability and durability are enhanced.

The utility model discloses a composite material roof photovoltaic system which comprises a plurality of photovoltaic subsystems arranged on a color steel tile roof, and the plurality of photovoltaic subsystems are arranged in multiple rows and multiple columns. Each photovoltaic subsystem comprises at least one composite material bracket guide rail, a plurality of composite material frame photovoltaic modules are detachably arranged on each composite material bracket guide rail, and the plurality of composite material frame photovoltaic modules are arranged in parallel along the length direction of the composite material bracket guide rail; each composite material frame photovoltaic assembly comprises a composite material assembly frame, and the composite material assembly frame is used for installing a photovoltaic panel; the device has the advantages of being simple in structure, easy to manufacture, reliable in work, convenient to maintain and the like, and can be suitable for salt pans, seasides and heavily polluted areas.

The present invention provides a screw rivet conveying device, comprising a driving device, a conveying mechanism, a guide frame and a fixed frame, wherein the driving device and the conveying mechanism are fixed on the fixed frame, the driving device is connected to one end of the conveying mechanism, the driving device drives the conveying mechanism to rotate, the conveying mechanism is spiral, and the guide frame is hollow cylindrical. The structure solves the technical problems of the prior art that the structure is complex, the cost is high, and the volume is large, and most of the unnecessary components are reduced. The structure is simple, the volume is reduced to the extreme, and the use environment of the miniaturized machine can be met. In addition, the materials used and the cost are reduced, the operation is stable without additional vibration, and the control accuracy of the entire equipment is improved.

The invention relates to the technical field of mechanical part machining, in particular to a bimetallic nut and a machining method thereof. A shell is of a cylindrical structure which is made of a steel material and has two open ends, and internal threads are machined on the inner wall of the shell; the inner sleeve is of a cylindrical structure which is made of non-ferrous metal and has two open ends, and external threads matched with the internal threads of the shell are machined on the outer wall of the inner sleeve. The outer shell and the inner sleeve are connected through the inner threads and the outer threads to form the double-metal nut. And a layer of anaerobic adhesive is uniformly coated at the thread position where the shell is combined with the inner sleeve. A counter bore is machined in the tail end of the shell and used for positioning assembly of the inner sleeve. A shoulder matched with the counter bore is machined at the tail end of the inner sleeve and used for being matched with the counter bore for assembling and positioning. According to the technical scheme, the problems that in the prior art, a bimetallic nut manufactured through a centrifugal casting technology is long in machining period, complex in technology, low in yield, high in manufacturing cost and serious in environmental pollution, and non-ferrous metal is prone to stripping are solved.

The utility model discloses an aquaculture pond outside shellfish shell collecting device through circulating water pipeline collection, be applicable to factory shrimp culture field. The shrimp pool bottom outlet is used to realize the separation of shrimp manure and shellfish shell with shellfish live shrimp baffle, and the shellfish shell is blocked at the shellfish live shrimp baffle, and the smaller solid dirt such as shrimp manure is filtered through the baffle filter hole after using the circulating water flow, and then is discharged to the shellfish shell collecting basket in the pool side water level tank through the circulating pipeline, and then flows to the microfiltration machine after the filter hole of the shellfish shell collecting basket. When the shellfish shell accumulates to a certain number at the shellfish live shrimp baffle, the shellfish live shrimp baffle is lifted by using the rope, and the gap below the baffle is formed than the shellfish shell, and the shellfish shell is driven by the circulating water flow and flows to the shellfish shell collecting basket through the pipeline, and since the volume of the shellfish shell is larger than the shellfish shell collecting basket blowoff drain hole, the shellfish shell is blocked in the shellfish shell collecting basket. Thus, a single pipeline can satisfy the circulating water flow and the shellfish shell collection. In addition, the shellfish shell collecting basket is full of shellfish shell, and the shellfish shell can be easily taken out from the pool side water level tank and poured.