786 results about "Circular cavity" patented technology

In one instance, a dynamic slab gate valve includes a valve body having a through-bore formed therethrough; a round gate cavity formed within the valve body and orthogonal to and bisecting the though-bore; and at least two retrofit slabs located within the round gate cavity. The retrofit slabs form a slab gate cavity having two parallel planar sides. A slab gate is disposed within the slab gate cavity. In another instance, a method for retrofitting a round gate valve includes the steps of removing a round gate from a round gate cavity of the round gate valve; installing a plurality of retrofit slabs within the round gate cavity to form a slab gate cavity; and installing a slab gate within the slab gate cavity. Other instances include seat assemblies and dynamic skirt assemblies.

The present invention relates to the technical field of gallium oxide crystal growth, and in particular to a thermal field structure and a device and method for preparing gallium oxide single crystals based on a guided mold method. The present invention changes the inner cavity at the bottom of the thermal field structure from a circular cavity to an elliptical cavity, so that the thermal field structure in the width direction of the mold extends toward the mold side, thereby improving the thermal insulation of the thermal field structure on both sides of the mold, and then prompting the mold core to move closer to the edges on both sides of the mold, ensuring the constant temperature gradient on the mold surface during the shouldering process of the crystal, avoiding temperature differences, and improving production efficiency. In addition, since the extended thermal field structure will make the air inlet airflow closer to the mold surface, resulting in the problem of cold airflow directly blowing the crystallization area on the mold surface, a drainage port is added below the air inlet to guide the cold airflow to the crucible position, thereby ensuring the effect of the mold core moving closer to the edges on both sides of the mold.

The invention relates to the technical field of soil porosity detection, in particular to a frozen soil parameter detection device which comprises a detection box, a shooting analysis module and a pair of box doors hinged to the front side of the detection box, a round rod is rotatably connected to the inner side of the detection box, and an upper disc is fixedly connected to the outer wall of the round rod. Through the arrangement of the structure, the temperature of a frozen soil sample sampling position is simulated in cooperation with a high and low temperature controller in the box, so that frozen soil samples in the multiple cutting rings can be ejected out and scraped off in a running water mode, the working efficiency is improved, the working efficiency is improved, and the working efficiency is improved. According to the device, the porosity of multiple frozen soil samples can be detected at the same time, the detected cutting ring can be automatically pushed out, the cutting ring with the soil sample to be detected can be pushed into the circular cavity for detection, synchronous detection of the multiple samples can be achieved at the same time, the number of times of opening a door for lofting testing by detection personnel is reduced, and the detection efficiency and accuracy of the device are further improved.

A fastening device for sports equipment comprising a first weight plate and a second weight plate, the fastening device comprising: a first fastening mechanism provided on a face of the first weight plate comprising: an annular groove formed by a radial inner wall and a radial outer wall depending inwardly from and axially aligned with the face of the first weight plate, a plurality of circular cavities formed by a radial inward and a radial outward extension of the inner wall and the outer wall of the groove, the cavities located at a plurality of substantially evenly-spaced locations around the groove, a plurality of curved guides formed by radial recesses within the inner wall and the outer wall of the groove, each guide starting at a cavity and extending an equal length along the groove in a first direction and having a width substantially equal to a diameter of the cavity, and a notch formed by walls extending radially from an outer edge of the first weight plate to the annular groove and located at a circumferential notch position, a second fastening mechanism provided on a face of the second weight plate comprising: an annular ridge formed by a radial inner wall and a radial outer wall depending outwardly from and axially aligned with the face of the second weight plate, a plurality of circular cavities formed by a radial inward and a radial outward extension of the inner wall and the outer wall of the ridge, each located at a plurality of substantially evenly-spaced locations around the ridge, a plurality of rollers each located within one of the cavities and having a width less than a diameter of the cavity, a flexible clip located in a recess provided in the second weight plate at a circumferential clip position offset from the circumferential notch position by the length of the guides, the clip comprising a first portion received and attached within a first recess part in the face of the second weight plate extending radially from an outer edge of the second weight plate through the ridge and having a protrusion extending radially from the outer edge of the second weight plate towards the ridge and a second portion received within a second recess part extending axially from the outer edge and across a side wall of the second weight plate which second portion can be flexed to axially retract the protrusion.

The invention relates to the technical field of mold cooling, and discloses a high-temperature mold rapid cooling device which comprises an upper mold plate and a lower mold plate, an annular runner is arranged between the upper mold plate and the lower mold plate, and a flow guide assembly is arranged in the annular runner; a base is arranged at the bottom of the lower die plate, a circular cavity is formed between the lower die plate and the base, and a scraping assembly is arranged in the circular cavity. A cover plate is placed on the top of the upper mold plate, a drainage pipe is arranged on the right side of the cover plate, a square groove is formed in the top of the upper mold plate, and an assembling assembly is arranged between the cover plate and the base. When the groove-shaped base moves to the receding groove, the scraping plate is separated from the top wall of the stepped groove, after the supporting plate crosses the receding groove, the first spring is compressed, and the scraping plate is attached to the top wall of the stepped groove, so that the scraping plate scrapes on the top wall of the stepped groove, water scale is removed, the heat conduction effect of cooling water and a mold is guaranteed, water scale accumulation is restrained, and the service life of the mold is prolonged. And the cooling efficiency is ensured.

The utility model discloses a mixing device for processing high-strength anti-crack concrete, which comprises a stirring tank and a support disc arranged right above the stirring tank, the lower end of the support disc is rotatably connected with a support ring, and a plurality of annularly distributed support rods are fixedly connected between the lower end of the support ring and the upper end of the stirring tank. A supporting block is fixedly connected to the inner side wall of the supporting ring, a servo motor is fixedly connected to the upper end of the supporting block, an annular groove is formed in the lower end of the supporting disc, an annular rack is fixedly connected to the inner side wall of the groove, and a gear meshed with the rack is arranged in the groove. The tail end of an output shaft of the servo motor upwards penetrates through the supporting ring and is fixedly connected with the lower end of the gear, and a circular cavity is formed in the position, close to the center, in the supporting disc. Through the arrangement of the piston, the supporting disc and other mechanisms, an additive can be uniformly dispersed into concrete, so that the time required for mixing is shortened, and the mixing uniformity is improved.

The invention provides a low-torque hydraulic balance ball valve, which relates to the technical field of valves, and comprises a valve body, a circular cavity is arranged in the valve body, a rotating shaft is arranged on the valve body in a penetrating manner, a valve core is arranged in the circular cavity, the rotating shaft is connected with the valve core, the valve body is also provided with a connecting channel, and the inlet end of the valve body is connected with the circular cavity through the connecting channel in a penetrating manner; a connecting hole is formed in the valve element, the valve element is communicated with the circular cavity through the connecting hole, a driving rod is arranged in the connecting channel, a stable sealing device is further arranged in the valve body, the driving rod is used for driving the stable sealing device, and the stable sealing device is used for enhancing the sealing effect of the rotating shaft and the circular cavity. The stable sealing device is arranged, the sealing action and the hydraulic balance process are synchronously carried out, an additional power source is not needed, the sealing effect of the rotating shaft and the circular cavity is synchronously enhanced in the hydraulic balance process, and dual optimization of torque reduction and leakage prevention is achieved.

The utility model relates to the technical field of photovoltaics and semiconductors, in particular to a cavity and a reaction furnace, and solves the problem that the productivity of the reaction furnace is relatively low. The cavity comprises an outer cavity body and a cooling pipeline, the shape of the cross section of the outer cavity body comprises a rectangular ring, the outer cavity body is used for containing a product, and the cooling pipeline is arranged on the outer side of the outer cavity body and used for containing a cooling medium. Compared with a circular cavity, the rectangular cavity can contain more products, so that the bearing capacity of the inner cavity is improved, and the productivity of the reaction furnace is improved. In addition, the cooling medium in the cooling pipeline can accelerate cooling of the cavity, so that the cooling efficiency of the reaction furnace is improved, the cooling time of the reaction furnace is shortened, the production efficiency of the reaction furnace is improved, and the productivity of the reaction furnace is further improved.

The invention discloses electronic throttle valve inner cavity spraying equipment and a spraying process, and relates to the field of spraying equipment.The electronic throttle valve inner cavity spraying equipment comprises a reserved supply spraying supply assembly and a spraying end head assembly, the spraying end head assembly is installed at the lower end of the reserved supply spraying supply assembly, and spraying treatment is conducted on an electronic throttle valve inner cavity through the spraying end head assembly; a built-in conical part is fixedly connected to the lower end of the interior of the spraying end head assembly, a reserved through hole is formed in the lower end of the outer side of the spraying end head assembly, and a movable guide part is installed on the inner side of the spraying end head assembly in a nested mode. According to the spraying equipment and the spraying process for the inner cavity of the electronic throttle valve, in the spraying process of the inner cavity of the electronic throttle valve, multi-direction rotation is conducted in a self-adaptive mode, uniform spraying work is conducted in the circular inner cavity of the electronic throttle valve, the phenomenon of uneven coating is avoided, automatic circumferential spraying treatment can be achieved in the single-time spraying work process, and the spraying efficiency is improved. Spraying materials are evenly utilized to the maximum degree, and the phenomenon of tedious waste is avoided.

The utility model provides a surface treatment polishing device for mobile toilet roof processing, which comprises a motor, a turntable, a small polishing head and a polishing piece, the output end of the motor is fixedly provided with the turntable, the outer end of the turntable is provided with a connector, and a round cavity is arranged between the connector and the turntable; an electromagnetic driver is detachably and fixedly mounted in the circular cavity, and a small polishing head is detachably and fixedly mounted on the electromagnetic driver; a polishing piece is detachably and fixedly installed on the connector, and a hole is formed in the surface of the polishing piece in a penetrating mode. The small polishing head is positioned in the hole; by means of the overall arrangement, in the using process, the surface of the roof of the mobile toilet can be polished in a large area, and concave positions and convex positions on the surface of the roof of the mobile toilet can be polished under the condition that no equipment is replaced; therefore, the polishing quality of the roof surface of the mobile toilet is guaranteed, and the whole mobile toilet is more convenient and flexible.

The utility model relates to the technical field of branch pipes, and discloses a branch pipe heat preservation jacket which comprises a heat preservation jacket body, the heat preservation jacket body is composed of a front jacket body and a rear jacket body, a first clamping cavity is formed in the inner side of the front jacket body, a second clamping cavity is formed in the inner side of the rear jacket body, and the first clamping cavity and the second clamping cavity form a circular cavity. One side of the front sheath is provided with a first protruding part and a second protruding part. According to the utility model, through the arrangement of the first protruding part and the second protruding part, the first protruding part and the second protruding part can be inserted into the first concave part and the second concave part respectively when the front sheath is attached to the rear sheath, so that an insertion mechanism is formed at the joint of the front sheath and the rear sheath, and the anti-shearing force or tensile force is effectively increased; meanwhile, the glue coating area of the inner sides of the front sheath and the rear sheath is increased, the reliability of the heat preservation sleeve main body is improved, and the condensation prevention and water dripping prevention effects of the heat preservation sleeve main body are improved.

The invention relates to the technical field of wafer heat treatment, in particular to wafer rapid heat treatment equipment which comprises a heat treatment equipment body, the side face of the heat treatment equipment body is concaved inwards to form a machining cavity, and the upper end of the machining cavity of the heat treatment equipment body is concaved upwards to form a circular cavity. A circular cavity is formed in the feeding area, a heating cover is installed in the circular cavity in an up-down sliding mode, a first tension spring is fixedly connected to the upper end of the heating cover, the upper end of the first tension spring is fixedly connected with the upper end of an inner cavity of the circular cavity, and a heating assembly is fixedly installed at the upper end of an inner cavity of the heating cover. A bearing disc with a wafer body is clamped into a placement groove of a placement table, an output shaft of a stepping motor rotates by a quarter of a circle, a rotary circular table drives the bearing disc and the wafer body to rotate by the quarter of the circle through the placement table, and the bearing disc with the wafer body rotates from a feeding area to a heat treatment area.

A multifunctional integrated interface for on-orbit assembly of modular space facilities belongs to the technical field of aerospace. A support structure is connected between an upper cover plate and a fixed base and constitutes a circular cavity structure, a driving ring is drivingly connected with a pin ring and can drive the pin ring to move up and down, the pin ring is used for realizing alignment positioning of the interface, the driving ring and the fixed ring are matched through a coupling pin and can drive a coupling ring to move up and down, the coupling ring is used for realizing locking function of the interface, a rotary base is drivingly connected with the driving ring at a lower end, a plurality of electric heating components are connected with the rotary base at an upper end and pass through the fixed ring, the driving ring drives the plurality of electric heating components to move up and down through the rotary base, and the plurality of electric heating components are used for realizing data transmission and power transmission function in cooperation with a counter interface. The interface has mechanical locking, data transmission, power transmission and heat exchange functions, and can meet on-orbit working requirements of the modular space structure.

The invention discloses a bionic cross plate tubular pile with the outer wall imitating snake scales, the inner wall imitating tree roots and the bottom end imitating tooth roots and a manufacturing method of the bionic cross plate tubular pile. The bionic cross plate tubular pile comprises a cylindrical tubular pile body, cross plates and tooth root imitating structures. The outer wall of the cylindrical pipe pile is provided with a plurality of snake-scale-imitated protruding structures, and the inner wall of the cylindrical pipe pile is provided with a plurality of tree-root-imitated protruding structures. The cross plate is arranged in the cylindrical pipe pile and divides a circular cavity in the cylindrical pipe pile into four first fan-shaped cavities; the tooth root imitating structure is arranged at the bottom end of the cylindrical pipe pile. According to the invention, the inertia moment of the pile body, the pile end resistance, the pile side friction resistance and the pulling resistance are synergistically enhanced through multiple bionic designs, so that the comprehensive bearing capacity of the tubular pile under the combined action of vertical and horizontal loads is remarkably improved, and a novel solution is provided for pile foundation engineering under complex load and geological conditions.

The invention discloses a multifunctional integrated interface for on-orbit assembly of modular space facilities, and belongs to the technical field of aerospace. The upper cover plate and the fixed base are connected through a supporting structure to form a circular cavity structure, the driving ring is in driving connection with the pin ring and can drive the pin ring to move up and down, the pin ring is used for achieving alignment positioning of a connector, and the driving ring and the fixed ring are matched through the coupling pin to drive the coupling ring to move up and down. The coupling ring is used for achieving the locking function of the interface, the lower end of the rotating base is in driving connection with the driving ring, the upper end of the rotating base penetrates through the fixing ring and is connected with the electric heating assemblies, the driving ring drives the electric heating assemblies to move up and down through the rotating base, and the electric heating assemblies are used for being matched with the interface on the opposite side to achieve data transmission and power transmission functions. The interface provided by the invention has the functions of mechanical locking, data transmission, power transmission and heat exchange at the same time, and can meet the on-orbit working requirement of a modular space structure.

The utility model provides a side pumping module based on a semiconductor laser, which belongs to the technical field of side pumping modules, and comprises a metal reflection cavity, a semiconductor laser, a side pumping module and a side pumping module, a plurality of groups of light inlets are uniformly formed in the outer wall of the metal reflection cavity in the axial direction; each group of light inlets comprises at least three light inlets which are uniformly formed in the circumferential direction of the outer wall of the metal reflection cavity; the glass sleeve is embedded in the metal reflection cavity and is coaxial with the cavity body; the two ends of the glass sleeve are connected with water channels; the two ends of the crystal rod are fixedly arranged in the glass sleeve and are coaxial with the glass sleeve; at least three groups of semiconductor modules; and each group of semiconductor modules comprises at least three semiconductor lasers which are electrically connected in series in sequence, are annularly and uniformly erected at the same group of light inlets of the metal reflection cavity, and emit laser to the glass sleeve through the light inlets. The side pumping module is high in conversion efficiency, uniform in pumping light distribution and stable in output energy.

The utility model discloses a power distribution network fault detection device, and belongs to the technical field of power detection. The device mainly comprises a box body; the detection assembly and the limiting assembly are arranged in the box body; the tensioning assembly is arranged in the box body; the contraction assembly is installed in the box body, the contraction assembly comprises at least two sets of installation frames, the installation frames are installed in the box body, winding boxes are installed on the installation frames, and round cavities are formed in the winding boxes; the fixed rod is mounted in the winding box; the rolling wheel is rotationally mounted on the fixing rod; the ratchet wheel is mounted on one side of the rolling wheel; the coil spring is arranged on the fixing rod in a sleeving mode, one end of the coil spring is connected to the fixing rod, and the other end of the coil spring is connected to the ratchet wheel. According to the power distribution network fault detection device, through the contraction assembly, the wire harness can be automatically contracted when contracted, so that the winding time is shortened, and the effect of automatically winding the wire harness is achieved.

The invention relates to the technical field of filtering equipment, in particular to an air filter and a vacuum pump with the same. The air filter comprises a fixed shell, a filter element assembly, a quick-release upper cover, a quick-locking assembly and an unlocking circular ring, the fixed shell comprises a hollow cylinder, an air inlet side pipe, an air outlet lower pipe, an annular convex edge and a guide lock groove; the filter element assembly comprises a bottom circular ring, a top circular ring, an inner filter ring, a middle filter ring and an outer filter ring; the quick-release upper cover comprises an upper cover body, an upper cover circular cavity, an upper annular groove, a contact disc and a lower annular groove. The quick lock assembly slides into the corresponding guide lock groove to lock the quick release upper cover; the unlocking ring comprises an unlocking ring body, an unlocking ring groove and an active inclined face. According to the air filter provided by the invention, layer-by-layer filtration from coarse to fine can be realized through the three layers of filter rings of the filter element assembly; the filter element assembly and the quick-release upper cover can be conveniently detached. The utility model further discloses a vacuum pump with the air filter.

The utility model discloses a waste chip collecting device in working of a horizontal milling machine, which belongs to the technical field of horizontal milling machines and comprises a base, a milling machine spindle box is fixedly connected to one side of the top of the base, a workbench is arranged on one side below the milling machine spindle box, an adjusting seat is arranged at the bottom of the workbench, and a mounting box is fixedly connected to the bottom of the adjusting seat. And a waste chip collecting assembly is arranged in the mounting box. According to the cooling device, the liquid pump conveys cooling liquid in the mounting box into the cooling mechanism through the pipeline, the water outlet pipe and the circular cavity, so that a milling cutter on the spindle box of the milling machine and the surface of a product are cooled, and sweeps in the cooling liquid can be filtered and separated through the filter frame; the cooling liquid flowing in the circular cavity can drive the inclined blades, the rotating shaft and the cam to rotate, so that the baffle plate drives the filter frame to move left and right to vibrate the sweeps in the filter frame, and the sweeps are uniformly laid in the filter frame while the separation efficiency of the cooling liquid and the sweeps in the filter frame is improved in an auxiliary manner.

The invention discloses a device and method for measuring the coaxiality of multiple circular cavities of a ceramic packaging shell, and belongs to the technical field of ceramic packaging shell production. The device comprises a test bench, the upper side of the test bench is fixedly connected with a constant-temperature fixing bench, the upper side of the constant-temperature fixing bench is provided with a clamping assembly, the upper side of the test bench is fixedly connected with a support, and a motor is fixedly connected in the support. In the process of measuring the coaxiality of the multiple circular cavities of the ceramic packaging shell, the motor is started to drive the measuring camera to rotate, the inner circular cavities of the ceramic packaging shell can be shot, in the process, the measuring camera can intermittently rotate back and forth, the shooting angle of the measuring camera can be changed, and the coaxiality of the multiple circular cavities of the ceramic packaging shell can be measured. In addition, due to the fact that the measuring camera is in the rotating state, the adverse effect of the inner circular bead of the cavity on normal shooting can be reduced, and then the shooting effect can be greatly improved.

The invention relates to the technical field of injection molds, in particular to an automatic ejection mechanism for an injection mold, which comprises a base, a supporting plate and a mounting plate are fixedly connected to the upper end of the base in front-back symmetry, a fixed mold seat is fixedly mounted at the upper end of the mounting plate, and guide columns are fixedly connected to the side, provided with a mold cavity, of the fixed mold seat in left-right symmetry; the ends, away from the fixed mold base, of the guide columns are fixedly connected with the supporting plate, the multiple guide columns are sleeved with a movable mold base in a front-back sliding mode, a hydraulic driving assembly is fixedly installed on the supporting plate, and the end of an inner rod of the hydraulic driving assembly is fixedly connected with the movable mold base. The mold has the beneficial effects that the movable mold base and the fixed mold base are opened, the driving mechanism drives the air guide assembly to move backwards, the sealing head slides into the circular cavity from the air outlet hole, an air outlet in the end of the telescopic air pipeline is separated from the inner wall of the circular cavity, and meanwhile the driving mechanism drives the air conveying mechanism to operate; and the gas transmission mechanism introduces gas into the gas guide assembly.

The invention belongs to the technical field of water quality analysis, and particularly relates to a water quality analysis device and a use method thereof. Comprising an annular floating block which is placed on a water area to be detected; an I-shaped connecting block is arranged on the annular floating block, and the top and the bottom of the I-shaped connecting block are located at the top and the bottom of the annular floating block respectively and connected through bolts; a circular cavity channel is formed in the I-shaped connecting block, and the two sides of the circular cavity channel extend to the top and the bottom of the I-shaped connecting block correspondingly; the top of the I-shaped connecting block is connected with a foundation platform through a bolt, and a long-endurance actual detection mechanism is arranged on the foundation platform; through the long-endurance real-time detection mechanism, the device can be located in the water area to be detected for a long time and analyze the water quality in the water area in real time, the situation that an operator needs to frequently operate or adjust the device according to different monitoring requirements to meet the requirements is avoided, the limitation of the device in use is reduced, and therefore the use effect of the device is improved.

The utility model provides a workpiece center quick positioning compact laser device for a numerical control machine tool, which comprises a shell, a battery, a circuit board, a cross-shaped laser, a positioning frame assembly and a bottom cover, a circular cavity is arranged at the bottom of the shell, and the battery and the positioning frame assembly are arranged in the cavity and are respectively positioned on two sides of a sleeve part. The circuit board is installed in the positioning frame assembly, the battery and the cross-shaped laser device are both electrically connected with the circuit board, the bottom cover is combined at the bottom of the shell and closes the cavity, a through hole corresponding to the cross-shaped laser device is formed in the bottom cover in a penetrating mode, laser emitted by the cross-shaped laser device can be emitted out through the through hole, and a connecting handle part is arranged at the top of the shell. Rapid centering can be achieved by conducting coordinate measurement on the two opposite angles, the centering device has good concentricity, the structure is compact, the size is small, the centering accuracy is high, the centering operation process can be simplified, the operation mode is simple and easy to operate, labor is saved, the machine tool utilization rate is improved, the use experience feeling is better, and the centering device is worthy of application and popularization.

The invention discloses a transport device for plum processing, and belongs to the technical field of fruit processing. A conveying device for plum processing comprises a device body, the upper end of the device body is connected with a first conveying belt, the upper side surface of one end of the first conveying belt is connected with a plurality of guide channels, and a circular cavity is formed through cooperation of a storage groove and a circular groove, so that independent fixation of single plums is achieved; friction and collision caused by jolting during transportation are avoided, so that the breakage rate during long-distance transportation is reduced, the requirement of subsequent processing on fruit integrity is effectively guaranteed, fruit percolate can be quickly guided out through the leakage holes of the storage cavity, juice is directionally guided into the collection cavity through the inclined flowing grooves, and the situation that the juice is retained to breed molds is avoided; meanwhile, an air convection channel is formed by penetrating through the ventilation cavity of the storage frame body, and is matched with an interlayer gap during stacking, so that the internal humidity of the cavity is remarkably reduced, heat accumulation generated by fruit respiration is inhibited, and the mildew rate of plums is further reduced.

The utility model discloses a self-adaptive clamping and positioning device for a wafer expanding ring. The self-adaptive clamping and positioning device comprises a positioning and clamping seat, a bearing part and a floating pressing strip, the bearing part is fixed at the bottom of the positioning and clamping seat and is used for supporting the wafer expanding ring; the top of the positioning clamping seat is provided with a semi-annular structure matched with the wafer expanding ring. The floating pressing strip is of a semi-annular structure matched with the wafer expanding ring and is detachably installed on the positioning clamping base through a front face clamping structure and a side face clamping structure. When the floating pressing strip is installed in place, a circular cavity for placing the wafer expanding ring can be formed between the floating pressing strip and the positioning clamping seat. The wafer expanding ring positioning and clamping device conveniently and reliably solves the positioning and clamping problems of the wafer expanding ring, effectively assists production in the fields of micro electronic elements, semiconductor chips and the like, can be suitable for most of wafer expanding rings, and is wide in application range and small in limitation.

This invention discloses a device for thoroughly mixing sludge and raw coal, relating to the field of raw coal processing technology. It includes a U-shaped frame plate, with a left support plate fixedly connected to the upper surface of the U-shaped frame plate near the left side wall. A circular cavity column is fixedly connected to the inner side of the right side wall of the U-shaped frame plate, and an arc-shaped sliding groove is formed on the right side wall of the U-shaped frame plate. The mixing mechanism of this invention, through the collaborative operation of hollow plates, transverse partitions, and perforations, utilizes the high-speed flow of sludge within a continuous S-shaped channel cavity to successfully achieve top-to-bottom sprinkling of raw coal placed between multiple hollow plates, thereby achieving thorough mixing of sludge and raw coal. The hollow plates divide the raw coal into multiple narrow areas, allowing for more thorough sprinkling of the sludge onto the raw coal, avoiding dead zones during the sprinkling process, and greatly improving the mixing efficiency of sludge and raw coal. Furthermore, the mechanism is ingeniously designed, has low manufacturing costs, and is conducive to widespread application.

The utility model belongs to the technical field of building curtain walls, and discloses a building aluminum alloy curtain wall which comprises a supporting frame, long grooves are formed in the two sides of the interior of the supporting frame, the number of the long grooves is two, and baffles are fixedly installed at the top ends and the bottom ends of the interiors of the two long grooves. A glass body located in the long groove is movably installed between the baffles, and circular cavities are formed in the two sides of the top end and the bottom end in the supporting frame correspondingly. Through the arrangement of the circular cavity, the threaded rods, the nuts, the cylinders and the suction cups, when the glass body is installed in the long groove, an operator movably sleeves the glass body through the two threaded rods, and meanwhile the nuts are connected to the two ends of the threaded rods in a threaded and sleeving mode for locking, so that the glass body is preliminarily fixed; at the moment, due to the arrangement of the cylinders and the suction cups, the two sides of the glass body are adsorbed and fixed, and therefore the fixing enhancing effect is achieved.

The utility model relates to the field of pipe fitting forming, in particular to a pipe fitting shape correcting tool which comprises an outer frame support, a clamping plate assembly, a punch and a jack. The clamping plate assembly comprises a lower clamping plate and an upper clamping plate, a semicircular first arc-shaped groove is formed in the top face of the lower clamping plate, a semicircular second arc-shaped groove is formed in the bottom face of the upper clamping plate, and an opening penetrating through the top of the upper clamping plate to the second arc-shaped groove is formed in the top of the upper clamping plate. The lower clamping plate and the upper clamping plate are oppositely combined to form a circular cavity used for being attached to the outer wall of the pipe fitting, and the opening is formed in the top of the circular cavity. The lower end face of the punch is provided with an arc-shaped end face matched with the opening of the circular cavity, the punch extends into the circular-arc-shaped cavity through the opening of the upper clamping plate, and the arc-shaped end face at the bottom of the punch is placed at the opening and used for completely sealing and wrapping the outer wall of the pipe fitting. The upper end of the punch is connected with the telescopic end of the jack, and the upper end of the jack is fixed to the outer frame support.

The application relates to the technical field of filtering equipment, in particular to an air filter and a vacuum pump with the same. The air filter comprises a fixed shell, a filter core assembly, a quick-release upper cover, a quick-lock assembly, an unlocking ring, the fixed shell comprises a hollow cylinder, an air inlet side pipe, an air outlet lower pipe, an annular convex edge and a guide lock groove, the filter core assembly comprises a bottom ring, a top ring, an inner filter ring, a middle filter ring and an outer filter ring, the quick-release upper cover comprises an upper cover body, an upper cover circular cavity, an upper ring groove, a contact disc and a lower ring groove, the quick-lock assembly is slid into the corresponding guide lock groove to realize the locking of the quick-release upper cover, and the unlocking ring comprises an unlocking ring body, an unlocking ring groove and a driving inclined surface. The air filter can realize layer-by-layer filtering from coarse to fine through the three-layer filter rings of the filter core assembly, and the filter core assembly and the quick-release upper cover can be conveniently disassembled. The application further discloses the vacuum pump with the air filter.

A kind of manual device for identifying tape winding harness, including base frame, which is provided with an open circular cavity, a rotating wheel is rolling fitted in the open circular cavity, and an open slot extending to the center of the circle is arranged on the circumference of the rotating wheel;The follow-up mechanism includes a positioning block, support arms and support plates are arranged on both sides of the positioning block respectively, the support arms and / or support plates are used to support the identification tape reel, the support plate is connected with the heart shaft of the rotating wheel and rotates synchronously with the rotating wheel;The guide mechanism includes a first guide rod and a rotating compression block, the first guide rod is arranged above the positioning block and installed on the support arm and / or support plate, the rotating compression block is arranged between the first guide rod and the positioning block, a hinge shaft is fixed circumferentially in the rotating compression block and the rotating compression block is hinged on the support arm and / or support plate.