67results about How to "Improve connection accuracy" patented technology

The utility model discloses a differential shell vertical run-out measuring device, which relates to the technical field of differential shell detection equipment and comprises a support provided with a workpiece clamping part and a workpiece detection part. The workpiece clamping part comprises a bottom boss and a top boss which are oppositely arranged, and the top boss is connected with the support through a lifting mechanism. The workpiece detection part comprises a supporting column, a first detection meter and a second detection meter, the supporting column is fixedly connected with the support, the supporting column is sleeved with a connecting plate, the connecting plate is provided with a plurality of adjusting holes, and the first detection meter and the second detection meter are fixedly connected with the connecting plate through the adjusting holes; and a positioning ball matched with the positioning hole is arranged in the positioning seat. Therefore, through the arrangement of the workpiece clamping part and the workpiece detection part, detection of coaxiality and circle run-out can be completed through one-time clamping of the differential shell, errors caused by clamping and positioning can be greatly avoided, and the device is suitable for rapid detection.

The utility model relates to a self-sealing pipeline connecting device which comprises a pipe fitting, a plurality of communicated pipeline connectors are arranged on the pipe fitting, pipelines are inserted into the pipeline connectors, installation grooves are formed in the inner walls of the pipeline connectors or the outer walls of the pipelines in the circumferential direction, sealing rings are arranged in the installation grooves, and the sealing rings are arranged between the pipeline connectors and the pipelines for sealing. After liquid is introduced into the pipeline, the liquid acts on the sealing ring, a structure matched with the liquid to increase the extrusion force of the sealing ring is arranged on the corresponding installation groove and / or the sealing ring, a locking mechanism convenient to disassemble and assemble is arranged between the pipeline connector and the pipeline, and the locking mechanism locks the pipeline connector and the pipeline. Liquid introduced into a pipeline is innovatively used as a key part of a sealing structure, sealing and locking structure design is carried out on the basis, the sealing structure has the advantages of being simple and reasonable in structural design, low in cost, convenient to disassemble and assemble, good in sealing effect, reliable in locking and the like, and the pipeline construction efficiency and quality can be improved easily.

The utility model discloses an assembly type power supply cabinet, which comprises an air inlet seat and an air outlet seat, at least one group of cabinet body is arranged between the air inlet seat and the air outlet seat, a bearing plate is arranged in the cabinet body, a plurality of groups of sliding mounting structures are arranged in cooperation with the bearing plate, first locking pieces are hinged to the top ends of the cabinet body and the air inlet seat, and second locking pieces are hinged to the top ends of the first locking pieces. Locking seats are arranged at the bottom ends of the cabinet body and the air outlet seat, locking grooves matched with the first locking pieces are formed in the locking seats, connection limiting structures matched with one another are arranged on the air inlet seat, the air outlet seat and the cabinet body, ventilation cavities are formed in the air inlet seat and the air outlet seat, ventilation openings matched with the ventilation cavities are formed in the air inlet seat and the air outlet seat, and protection filter screens are arranged at the ventilation openings. According to the utility model, the overall assembly convenience can be improved, the installation space in the cabinet body can be flexibly adjusted, and meanwhile, the ventilation and heat dissipation effects are good.

The invention discloses a reinforcement sleeve connection torque and displacement double-control intelligent monitoring vibration reminding device and a using method thereof, and relates to the technical field of building construction. The problems that existing steel bar sleeve connection depends on artificial experience, and the connection quality is difficult to ensure are solved. The torque sensor and the displacement sensor are integrated on the wrench, the torque value and the steel bar insertion depth in the connecting process are monitored in real time, and therefore dual control over the connecting quality is achieved; comprehensively judging a connection state by utilizing a PID controller and combining a feedforward and feedback control mechanism; when the monitored torque value and displacement data reach preset values at the same time, an acousto-optic vibration prompt is given out through a vibration reminding device to remind an operator that connection is completed; according to the method, the connection precision and the construction efficiency are improved, manual judgment errors are reduced, the reliability of a building structure and the construction safety are ensured, powerful support is provided for follow-up quality tracing, and therefore the intelligent process of the building construction industry is further promoted.

The utility model relates to permanent magnet motor technical field, concretely relates to a kind of permanent magnet motor suitable for oilfield pumping equipment, including speed reducer, the input end of speed reducer is fixedly connected with input shaft, the outside of one end of input shaft is fixedly connected with shaft sleeve, the outer wall of shaft sleeve is fixedly connected with rotor iron core, the outer wall of rotor iron core is fixedly connected with multiple equidistance evenly distributed permanent magnet, the outer wall of speed reducer near input shaft is fixedly connected with mounting flange, the side wall of mounting flange is provided with front end cover, and the side wall of front end cover is provided with machine shell.Compared with prior art, after the structure design of increasing air gap is used, even if slight axial displacement or radial swing occurs in the running process of rotor iron core, the interference between permanent magnet and stator iron core can be effectively avoided, and the reliability and adaptability of motor under high impact, high vibration working condition are improved.

This utility model relates to the field of cable tray technology and discloses a quick-assembly cable tray with a snap-fit ​​structure. The cable tray includes a cable tray with an installation mechanism at its right end. The installation mechanism includes a connecting frame fixedly connected to the right end of the cable tray, and a plug-in frame fixedly installed at the left end of the cable tray. A concave plate is fixedly connected to the inner side wall of the plug-in frame, and a rotating column is rotatably connected to the inner wall of the concave plate. A circular groove is formed at the top of the rotating column, and a carrying component is provided on the inner wall of the groove. A support plate is fixedly connected to the center of the rotating column, and an adjustment mechanism is provided at the right end of the plug-in frame. In this utility model, after releasing the bolt limit, rotating the rotating column drives the plug-in plate to move quickly and accurately embed into the square groove, eliminating the need for repeated alignment adjustments. This effectively avoids uneven force and misalignment caused by manual operation, improving installation efficiency and connection accuracy.

The utility model belongs to aluminum block seamless connection technical field especially, it is a kind of seamless connection mechanism of aluminum briquetting, including aluminum sheet, the aluminum sheet is connected by multiple aluminum blocks in horizontal direction, the periphery of aluminum block is provided with connecting assembly, and aluminum sheet is carried out horizontal seamless clamping by connecting assembly;The both sides of aluminum sheet are provided with clamping assembly.The connecting assembly is set in the application, the horizontal insertion connection of adjacent two aluminum blocks is carried out, then multiple horizontal insertion aluminum blocks are inserted into the matching convex plate and matching recessed plate of both sides vertically, and insertion rod is inserted into the inner wall of sliding slot, the overall aluminum sheet is further fixed, the aluminum block in aluminum sheet is assembled and replaced conveniently, and maintenance cost is reduced, the clamping assembly is set, the spring is elastically installed between limiting ring and the limiting block adjacent thereto, the limiting block is extruded inward, thereby the connection accuracy of aluminum block vertical direction is improved.

The utility model relates to the technical field of flow meters, and discloses an anti-interference signal shielding shell of a vortex shedding flow meter, which comprises two shell bodies which are oppositely arranged to form a square box shape, two end walls of the shell bodies are provided with pipe grooves which can be butted to form pipe holes, connecting edges are fixedly arranged at the edges of the opposite surfaces, and the connecting edges are fixed through a plurality of screws. The shell is composed of a stainless steel shell on the outer side and a copper shell on the inner side. And the supporting legs are detachably arranged below the shell. The vortex shedding flowmeter has the advantages that the vortex shedding flowmeter has a good signal shielding protection effect, and output data errors are prevented.

The utility model discloses a kind of flexible flat cable automatic plug-in mechanism, including workbench, rack and counterplug mechanism, two placement cavities are arranged at intervals on rack, one of two placement cavities is used to place test mainboard, another is used to place panel to be tested, test mainboard has first socket, panel to be tested has second socket;Counterplug mechanism includes rack, first driving part and clamping assembly, first driving part is set on rack, the drive end of first driving part is provided with clamping assembly, clamping assembly includes second driving part and two clamping pieces set on second driving part, clamping piece is used to clamp flexible flat cable, first driving part can drive clamping assembly to move along first direction, second driving part can drive two clamping pieces to be away from each other and the both ends of flexible flat cable are respectively inserted in first socket and second socket, realize the automatic connection of test mainboard, flexible flat cable and panel to be tested, and connection precision and connection efficiency are high.

The utility model relates to pipeline joint technical field, and disclose rail transit elbow joint, include: elbow joint, the inner wall of end portion and elbow joint is slidably arranged, wherein, the connecting pipe is connected with the setting of dismounting component between elbow joint, and the end portion of this connecting pipe has the sealing assembly setting with the inner wall of elbow joint. The outer wall of connecting pipe close to the one end of elbow joint has the first annular groove and second annular groove setting, the inner wall of first annular groove is closely contacted with the end surface of elbow joint and is set. The rail transit elbow joint, realizes firm connection through dismounting component, and in sealing assembly, sealing clamping body protruding end and sealing clamping seat arc sealing groove accurate clamping, increase the contact area, effectively prevent medium leakage, ensure that the sealing performance reliable at joint, and the preliminary contact structure of connecting pipe and elbow joint can also assist positioning, improve the connection accuracy.

The utility model discloses a grouting connection prestressed concrete precast pile with end plates, which comprises prestressed reinforcements, a concrete pile body, the end plates, sleeve assemblies and inserting rods, the prestressed reinforcements are arranged in the concrete pile body, and the end plates are arranged at two ends of the concrete pile body; the inserting rod comprises an inserting section and a fixing section, the fixing section is inserted into the open end of the second sleeve and fixedly connected with the second sleeve, and the inserting section is inserted into the open end of the first sleeve filled with the connecting grout of the adjacent grouting connecting prestressed concrete precast pile. The grouting connection prestressed concrete precast pile head with the end plate is high in strength, the manufacturing cost is lower than that of a mechanical connecting piece, and connection and positioning between piles are more accurate.

The application discloses a multi-circle combined pipe and a connecting and locking device thereof, relates to the technical field of pipe structure, and the connecting and locking device comprises a connecting shell and a connecting assembly. The connecting shell extends along the extension direction of a pipe jacking machine, and a limiting groove is formed between the connecting shell and the outer wall of the pipe jacking machine. The connecting assembly comprises a connecting rod, a plug-in rod, a connecting pivot, a locking piece and a telescopic driving structure. One end of the plug-in rod is in plug-in cooperation with the limiting groove, the other end of the plug-in rod extends out of the limiting groove and is hinged to the connecting rod through the connecting pivot. The end of the connecting rod away from the plug-in rod is hinged to the side wall of a pilot pipe through a hinge shaft. The telescopic driving structure is connected to the middle part of the connecting rod. The telescopic driving structure can drive the connecting rod to rotate around the hinge shaft. The locking piece can lock or unlock the connecting pivot, so that the plug-in rod can be fixed or rotated relative to the connecting rod. The multi-angle connection between the pilot pipe and the pipe jacking machine can be adapted, the adjustment efficiency of the connection posture of the pilot pipe and the pipe jacking machine is improved, and the connection precision and the connection reliability are improved.

This application relates to a duct mechanism and an air supply device. The duct mechanism includes: a duct assembly comprising a duct shell and a bushing, the outer wall of which has a first positioning portion radially; and a support base having a shaft hole channel, the two opposite ends of which along their axial direction are an inner end near the duct shell and an outer end away from the duct shell, respectively, and a stop portion surrounding the outer end is formed on the support base; wherein the bushing passes through the shaft hole channel from the outer end and is detachably connected to the duct shell, and the bushing is also rotatably connected to the shaft hole channel, and the stop portion is used to stop and limit the first positioning portion along the axial direction of the bushing. The duct mechanism of this application simplifies the positioning and alignment process of the duct assembly and support base during assembly, quickly and accurately completing the rotatable connection assembly of the entire duct assembly and support base, improving the connection efficiency and accuracy of the duct assembly and support base, reducing the production difficulty of the duct mechanism, and improving the production quality and efficiency of the air supply device.

The utility model relates to the technical field of building installation engineering, in particular to an anti-seismic inclined strut structure which comprises a channel steel vertical rod, a channel steel transverse rod and a channel steel inclined strut which are the same in shape and are in a concave shape with one side open and the other side provided with a kidney-shaped hole. The channel steel inclined struts are connected with the sides, provided with kidney-shaped holes, of the channel steel vertical rods or the channel steel transverse rods through first connecting pieces, or the channel steel inclined struts are connected with the sides, provided with U-shaped openings, of the channel steel vertical rods or the channel steel transverse rods through second connecting pieces; the first connecting piece comprises a first connecting part and a second connecting part; the second connecting piece comprises a third connecting part and a fourth connecting part, an L-shaped through groove is formed in the side face of one end of the fourth connecting part, the second connecting piece comprises a connecting rod, and the connecting rod penetrates through the opening side of the channel steel vertical rod or the channel steel transverse rod, the kidney-shaped hole and the L-shaped through groove of the fourth connecting part and then is locked through a nut. The utility model has the advantages that the multi-angle and multi-direction connection of the inclined support rod can be realized through the bolt and the screw rod without opening a hole on site, so that the requirement on labor force is reduced; and the connection precision of the structure is improved.

The utility model relates to the technical field of machine manufacturing, and discloses a ladder manufacturing positioning tool which comprises a supporting frame body and a plurality of connecting pieces, at least one pair of first positioning plates distributed at intervals in the first direction is arranged at the top of the supporting frame body, a first positioning hole is formed in each first positioning plate, and a second positioning hole is formed in each first positioning plate. A plurality of pairs of second positioning plates distributed at intervals in the first direction are arranged on one side of the supporting frame body in the height direction at intervals, each second positioning plate is provided with a second positioning hole, and the first direction is perpendicular to the height direction of the supporting frame body. Every two connecting plates located on different main frames can correspond to at least one pair of first positioning plates or at least one pair of second positioning plates, and the first positioning holes and the second positioning holes are used for assisting in positioning the positions of through holes to be formed in the corresponding connecting plates. Each connecting piece is detachably connected with a through hole formed in the connecting plate and the first positioning hole or the second positioning hole corresponding to the through hole. And the ladder stand manufacturing yield is high, and the universality is good.

The present invention discloses a measuring device for microelectronic components and a measuring method thereof, comprising a carrier board, a needle bed assembly and a signal conversion assembly, wherein the needle bed assembly is located between the carrier board and the signal conversion assembly and acts as an intermediate layer, the carrier board is provided with acupuncture points, the number of which is selected according to the positioning size of the microelectronic component to be measured, the needle bed assembly comprises a probe and a probe positioning tool, the probe positioning tool is provided with a probe positioning hole and a needle bed positioning hole, the probe positioning hole is used for axial and radial positioning of the probe, the present invention can be generally used in high temperature, low temperature, high pressure, vacuum and other environments according to the process requirements of microelectronic components, and can be generally used in all scenarios requiring small spacing and multi-channel online electrical connection.

The application discloses a gearbox and an electric drive vehicle. The gearbox comprises a first housing, a second housing connected to one side of the first housing, an intermediate plate arranged between the first housing and the second housing, and forming a first containing part with the first housing and a second containing part with the second housing, wherein the intermediate plate can be used for fixing bearings of a gear set, a motor arranged in the first containing part, a motor rotating shaft, one end of the motor rotating shaft being fixed to the first housing and the other end extending to the second housing and being fixed to the second housing, and a gear set arranged in the second containing part.

This utility model relates to the field of soundproof cabin technology and discloses a soundproof cabin with an arc-shaped cover, including an arc-shaped aluminum profile and an arc-shaped cover. The arc-shaped aluminum profile has arc-shaped covers at both ends, and a crossbar and a vertical bar are provided between the arc-shaped aluminum profiles. The arc-shaped aluminum profile, the crossbar, and the vertical bar form a rectangular frame. A sealed door is provided on one side of the rectangular frame, and horizontal sound insulation panels are provided at the top and bottom of the rectangular frame. This utility model's arc-shaped aluminum profile and arc-shaped cover, through precise positioning groove and positioning plate design, improve the connection accuracy and stability between components, reducing noise caused by loose components. The sound insulation panels are installed using a rectangular strip and rectangular groove splicing method, making installation more convenient and flexible, and ensuring the tightness of the splicing joints, thus improving the sound insulation effect. The arc-shaped design and cavity structure not only enhance the structural strength but also further improve the sound insulation and heat insulation performance, providing users with a better user experience.

The present invention discloses a boring machine simulation cutting force loading device and loading method, which relates to the boring machine technical field, including a mounting frame for mounting the device as a whole. The present invention realizes contactless energy transmission through a magnetic coupler, effectively avoiding the test error caused by friction and bolt influence in traditional bolt connection, and improving the accuracy and reliability of the test. Secondly, the flexibility and adjustability of the magnetic coupling component enable the device to easily adapt to boring machines of various models and specifications, enhancing the versatility and applicability. In addition, the high-precision concentricity calibration and stable connection design between the magnetic coupling component and the boring machine spindle not only reduce vibration and wear, but also extend the service life of the equipment. In summary, the magnetic coupling component, with its high-precision, contactless, flexible and adjustable characteristics, provides solid technical support for boring machine simulation cutting force loading test.

The utility model discloses PE tubular product hot melting processing equipment, including base, be equipped with screw rod on base rotation, and the outside fixed establishment of motor of base, motor output fixed connection screw rod one end, and the outside screw thread connection of screw rod is equipped with transmission block, and transmission block outer wall rotation is equipped with link rod, link rod sets up multiple and bottom all rotationally connected and is equipped with the block of holding, and multiple block top all abuts and is equipped with the pressing plate of setting up, and the fixed mechanism that all is equipped with between Yaan and the pressing plate, the fixed mechanism includes the plug -in rod and fixed cover, and the plug -in rod is fixed in the top surface of block and is inserted with the pressing plate, and the fixed cover is inserted in the top end of plug -in rod and abuts in the top surface of pressing plate, and the fixed cover inner wall is equipped with the clamping plate of fixed establishment, the clamping plate sets up multiple, and the fixed mechanism that plug -in rod is combined with fixed cover, and cooperate the pressing plate can fast and firmly fixed tubular product, effectively prevent the displacement of tubular product in the hot melting process, ensure the interface quality, and the working efficiency and connection precision of PE tubular product hot melting butt joint have improved greatly.

The utility model provides a kind of for arch rib segment temporary connection's quick fixing device, including two arch rib fixed sleeve, connecting rod bolt fixing device and two electromagnet adsorption device, two the arch rib fixed sleeve is connected symmetrically by connecting rod bolt fixing device, two the arch rib fixed sleeve is equally installed electromagnet adsorption device, the arch rib fixed sleeve includes two half-round sleeve, two mortise bolt, four rubber antiskid pad and several hoisting handles, the left side and right side in the half-round sleeve are equally installed rubber antiskid pad, and the rubber antiskid pad is attached half-round sleeve, several hoisting handles are installed in the half-round sleeve outside, two the half-round sleeve is connected by two mortise bolt.This utility model's beneficial effects: solve arch rib segment temporary connection's construction efficiency low, the problem of poor connection precision, improve the security of construction and applicability to complex construction environment.

The utility model discloses an LED display box body and an LED display screen, the LED display box body comprises two box units and a connecting structure, each box unit is provided with a display panel, one box unit is provided with a first inclined plane, the other box unit is provided with a second inclined plane used for being attached to the first inclined plane, and the connecting structure is connected with the first inclined plane. The first inclined plane and the second inclined plane are connected through a connecting structure, so that the display panels of the two box units are connected with each other; the connecting structure comprises screws, a plurality of screw holes formed in the first inclined face and a plurality of mounting holes formed in the second inclined face, the screw holes correspond to the mounting holes in a one-to-one mode, and the screws penetrate through the mounting holes to be connected with the screw holes. The first inclined plane and the second inclined plane are connected through the screws, additional connecting pieces are not needed, the appearance is more attractive, and mounting and dismounting are convenient; the alignment effect can be achieved through the screws, the mounting holes and the screw holes, the connection precision of the first inclined face and the second inclined face is improved, and the connection precision of the two display panels is guaranteed.

This invention discloses a three-dimensional assembly method for ultra-large span double-layer steel truss bridges, including: setting two rows of steel piers according to the camber of the jig and preventing settlement; using a gantry crane with special clamps to achieve the horizontal and vertical conversion of the truss segments; assembling the first segment in the order of lower bridge deck, side trusses, and upper bridge deck; subsequently, matching and welding the mother segments in the same order; pre-setting vertical anti-deformation during assembly, and welding from the middle section to both sides; uniformly installing anchor pipes after the completion of the large segment assembly in a single round; setting three quality control points during assembly to check the total length, side curvature, truss width, diagonal difference, camber, and anchor point spacing; after passing the test, disassembling and removing the jig, retaining the mother segment for the next round. This application controls welding deformation and cumulative alignment error through multi-segment continuous matching assembly and anti-deformation pre-setting; the subsequent installation of anchor pipes avoids collisions and ensures anchor point accuracy; setting the jig according to the camber and re-measuring in rounds achieves a reliable transition from stress-free to stress-loaded installation.

The invention belongs to the technical field of welding, and provides a nickel-based ceramic and metal connecting method and a connecting piece obtained through the nickel-based ceramic and metal connecting method. The connecting method comprises the following steps that a connecting layer is arranged between nickel-based ceramic and metal, the portion between the connecting layer and the nickel-based ceramic and the portion between the connecting layer and the metal are coated with a binding agent, then vacuum brazing is conducted, and a connecting piece of the nickel-based ceramic and the metal is obtained; the connecting layer is alloy foil, and the alloy foil comprises silver, copper, titanium and molybdenum; the nickel-based ceramic comprises boron carbide powder, titanium powder, graphite powder and nickel powder; the melting point of the metal does not exceed 2000 DEG C. According to the connecting layer, residual thermal stress caused by different thermal expansion coefficients between ceramic and metal can be relieved, interface reaction can be controlled, and the joint quality can be improved. A joint of the nickel-based ceramic and metal connecting piece is uniform and compact, and no hole or microcrack is generated; connection efficiency and connection precision are high, and material deformation is small; and the connecting joint is high in strength, high in corrosion resistance and good in conductivity.

The utility model discloses a quick dismounting and connecting mechanism and modularization curtain wall belongs to building curtain wall technical field. The curtain wall includes the cross -shaped frame of main installation frame and the side installation frame of both sides and a plurality of curtain wall main parts and connecting assembly. The preliminary positioning is realized to curtain wall main part through the sliding fit of sliding slot and support rod, and the transverse and longitudinal spacing is realized through the bumping of first abutting convex strip, second abutting convex strip and the protruding block on connecting support. The locking assembly adopts the locking wheel with eccentric hole, and the fixing of curtain wall main part is realized after rotating and clamping into locking groove, and the perpendicular direction spacing is enhanced through the clamping of semicircle ring and limiting groove. U-shaped elastic plate and second end cover are used for shielding the gap between curtain wall board, and can adapt to the deformation caused by temperature change. The structure realizes the quick positioning, double locking and gap shielding of curtain wall, improves the installation precision, efficiency and long -term stability, and is convenient to dismount and maintain.

The embodiment of the invention relates to the technical field of vehicle bodies, and discloses a rear shock absorption tower structure, a rear vehicle body assembly and a vehicle, the rear shock absorption tower structure comprises a rear shock absorption tower main body, and the rear shock absorption tower main body comprises a first mounting part arranged at the top end of the rear shock absorption tower main body and used for fixing a rear shock absorber; the second mounting part is arranged at the lower end of the rear shock absorption tower main body and is used for being connected with a lower swing arm mounting bracket; the third mounting part is arranged on the inner side of the lower part of the rear shock absorption tower main body and is connected with a rear floor; the fourth mounting part is arranged on the outer side of the upper end of the rear shock absorption tower main body and is connected with a hub package inner plate; and the fifth mounting part is arranged on the front side of the lower end of the rear shock absorption tower body, the inner side of the fifth mounting part is connected with a cross beam, and the outer side of the fifth mounting part is connected with a doorsill boundary beam. According to the technical scheme, the bearing performance of the structure can be improved, and the vehicle space layout is optimized.

The present application relates to thin film deposition equipment technical field, disclose a shower head and its processing method, the shower head includes: cover plate has the through hole, the through hole includes first hole section and second hole section;Spray plate is provided with connecting column, connecting column includes thread section and base section;Connecting sleeve, including sleeve, sleeve is matched on the outside of thread section;First sealing structure, between the sleeve and the one end of thread section away from base section, the first sealing structure seals the sleeve and thread section.The present application is matched by the sleeve and connecting column thread connection, realize the connection of cover plate and spray plate, the consistency of thread cooperation is higher than welding, can effectively improve the connection precision, in addition, realize the process of connection without using welding and so on heating means, therefore can avoid the deformation of connecting column and so on connecting structure, in addition, still set up the first sealing structure, the first sealing structure can guarantee the sealing performance between connecting sleeve and connecting column, simple structure, convenient operation.

The invention belongs to the technical field of printing ink processing, particularly relates to a magnetic printing ink preparation device and a preparation method, and aims to solve the problems that an existing reaction kettle needs to be transferred to a subsequent step for filtering and washing a material after a reaction, transfer is inconvenient, and the processing efficiency is low due to the fact that stirring needs to be performed by depending on other equipment before the reaction. According to the scheme, the device comprises a reaction kettle, three charging barrels are fixedly arranged at the top of the reaction kettle in a penetrating mode, stirring shafts are rotatably arranged in the charging barrels in a penetrating mode, a plurality of stirring spoons used for stirring materials are fixedly arranged on the outer walls of the stirring shafts, and discharging mechanisms are arranged at the bottoms of the charging barrels; the whole magnetic ink preparation device integrates stirring, mixing, centrifugal separation, discharging and cleaning, automation and continuity of the production process are achieved, the number of times of material transfer can be reduced, meanwhile, the equipment is reasonable in structural design and easy and convenient to operate, the skill requirement for operators is lowered, and the flexibility and adaptability of a production line are improved.

The utility model discloses a kind of water leakage detection devices for intelligent water meter, comprising: U-shaped support plate, its left side is fixed with PLC controller;Extrusion sealing connection component, it is two groups, the extrusion sealing connection component of right side is fixedly installed on the right side inner wall of U-shaped support plate, the digital pressure gauge is fixedly connected in the right end of the extrusion sealing connection component of right side;Z-shaped pipe, left end of the extrusion sealing connection component of left side is fixedly connected in. The utility model is provided with a series of structures, it is convenient to automatically fast accurate control pressure and the two water end extrusion sealing connection of intelligent water meter body, utilize the mode that both sides accurate clamping sealing is formed by control pressure extrusion, automatically form the shielding limiting effect of both sides, avoid the risk of slipping when subsequent water pressure, improve connection stability and accuracy, and only need single start one electric telescopic rod can realize horizontal drive and sealing work, improve operation convenience.

This utility model discloses a self-locking three-dimensional metal node connection mechanism, relating to the field of structural engineering, including a connecting rod, a fixing rod, and a connecting sphere. A self-locking block is provided inside the connecting sphere, and a second spring is movably installed between the self-locking block and the connecting sphere. A fixing rod is movably installed around the connecting sphere, and a locking block is installed on the inner side of several fixing rods close to each other. A connecting rod is movably installed on the outer side of several fixing rods, and a first spring is movably installed between the locking block and the connecting block. A rectangular groove is provided inside the connecting sphere surrounding an annular groove. This utility model uses the connecting sphere as its core, achieving rapid assembly through a double self-locking structure, eliminating the need for complex tools, shortening time, facilitating secondary confirmation of the connection, and improving accuracy. Through the three-dimensional spherical structure and groove design, multi-directional connection is achieved, adapting to metal structures with different cross-sections, broadening the applicable scenarios, and reducing usage costs.