5034 results about "Threaded pipe" patented technology

The invention discloses a phosphorus oxyfluoride reaction and separation integrated preparation tower, and belongs to the field of industrial equipment for phosphorus oxyfluoride preparation, the preparation tower comprises a tower body, the tower body is provided with a feeding area, a reaction area and a separation area, the feeding area and the separation area are both filled with filler sections of filler, a first feeding port is formed in the bottom of the filler section in the feeding area, and a second feeding port is formed in the bottom of the reaction area. A tubular heat exchanger is arranged in each reaction zone, a threaded pipe is arranged on each tubular heat exchanger, filler is also filled between the threaded pipes, a second feeding hole is formed in the upper part of the reaction zone on the top layer, and polyphosphoric acid and anhydrous hydrogen fluoride are contacted in the reaction zones to form a concentration stepped reaction and a temperature stepped reaction; and the phosphorus oxyfluoride gas generated after the reaction is fractionated through the filler section on the separation area and enters the next process from the top of the tower body. According to the invention, the reaction and separation of phosphorus oxyfluoride production are integrated, the energy consumption of phosphorus oxyfluoride production is reduced, the production cost is reduced, and the reaction yield is improved.

The invention relates to the technical field of copper pipe optimization, in particular to an internal thread copper pipe structure size optimization method, system and equipment and a storage medium, and the method comprises the steps: determining a transformation relation fitting curve, a heat exchange coefficient change rule curve and a gram weight per meter change rule curve of an internal thread pipe, and adjusting geometric parameters according to the curves, forming a parameter optimization scheme; according to the parameter optimization scheme, a three-dimensional model corresponding to the internal thread pipe is established, and quantitative solution calculation is carried out; according to the quantitative solution calculation result, when it is determined that the design requirement can be met, the three-dimensional model is loaded to form a corresponding forming mold; simulating a ball spinning process for the three-dimensional model and the forming mold, and performing finite element analysis; adjusting the design parameters of the forming die according to the analysis result until the forming design requirement can be met; the structure size of the internal thread copper pipe can be simulated and optimized, the product performance of the optimization scheme is predicted, the optimal optimization scheme is obtained, and the debugging requirement in actual production is reduced.

The utility model relates to the technical field of precise driving and positioning, and discloses a linear motor type electric screw which comprises a screw rod, a shell, a driving mechanism, a mechanism seat and a threaded pipe. The driving mechanism is arranged in a cavity defined by the shell and the mechanism base. The driving mechanism comprises a flexible hinge, piezoelectric ceramics and a pre-tightening spring. The flexible hinge comprises a first clamping jaw and a second clamping jaw. And the first clamping jaw and the second clamping jaw provide rotating force for the screw rod under the action of the piezoelectric ceramics. And the pre-tightening springs are used for applying pre-tightening force between the first clamping jaw and the screw rod and between the second clamping jaw and the screw rod. The threaded pipe is used for supporting the threaded rod and being connected with an external mechanism. According to the utility model, the piezoelectric ceramic is adopted for driving and the flexible hinge is combined, so that precise linear motion control is realized, and the touch-free adjusting device has the characteristics of high resolution, high precision and compact structure, and realizes touch-free adjustment of the optical adjusting bracket which is difficult to touch. A plurality of linear motor type electric screws are combined for use, so that two-dimensional or three-dimensional motion control can be realized.

The invention belongs to the technical field of radial artery haemostat, and particularly relates to a multifunctional radial artery haemostat which comprises a base, a haemostasis sliding hole is formed in the top of the base in a penetrating mode, a haemostasis pressure piece is arranged in the haemostasis sliding hole in a sliding mode, mounting grooves are formed in the two ends of the base, and a bandage is fixedly mounted between the two mounting grooves jointly. The bandage is made of flexible non-woven fabric, and the hemostasis pressing piece comprises a compression internal thread tube which is installed in the hemostasis sliding hole in a sliding mode. After a medical worker stops pressing the two pressing blocks, a reset spring pushes the friction tile to reset under the action of resilience force, and the abutting effect with the friction ring is relieved, that is, after the medical worker stops pressing the two pressing blocks, if the twisting sleeve rotates again, the adjusting screw cannot be driven to rotate, and therefore the pressing inner threaded pipe cannot move upwards or downwards, and the medical worker cannot be damaged. The twisting sleeve is prevented from rotating and hurting the wound of the radial artery of the patient again, and the safety protection performance of hemostasis is improved.

The invention relates to the technical field of silo grain storage engineering, and particularly discloses a construction process of a conical silo top of a large-diameter squat silo, which comprises the following steps: step 1, lifting a steel truss to a height not lower than the mounting position of a bracket, and then fixedly mounting the bracket on an embedded threaded pipe on a silo wall; secondly, a supporting plate of the bracket is fixedly connected with a stress plate fixed to the radiation beam through a bolt; wherein a plurality of mounting holes are formed in the supporting plate of the bracket, a plurality of matching holes are formed in the stress plate, fixed connection is achieved by inserting bolts into the mounting holes and the matching holes, and the mounting holes and / or the lap joint holes are adjusting holes. And thirdly, formworks are installed on the steel trusses, steel bars are bundled, then the silo top is poured, and during pouring, according to the principle of first bottom and then top, the lower ring beam connected with the silo wall is poured firstly, then the conical shell is poured, and finally the center of the silo top is poured. The scheme is used for solving the problems that disassembly is time-consuming and secondary utilization is affected due to welding of the steel truss and the bracket at present.

The invention belongs to the technical field of medical instruments, and particularly relates to a medical anesthetic gas purification device which comprises a purification shell and a PLC arranged on the purification shell, the PLC is used for controlling the working state of each electric appliance element on the purification shell, two purification cavities are formed in the purification shell, and the purification cavities are communicated with the purification shell. And threaded pipes are rotationally arranged in the two purification cavities correspondingly and communicate with butt joint pipes in a threaded mode. During purification operation, through cooperation of the joint control unit and the lifting gas guide unit, waste anesthetic gas and the activated carbon purification filter element form a three-dimensional and all-around contact mode, the use efficiency of all parts of the activated carbon purification filter element is guaranteed, resource waste is reduced, the use cost is reduced, and meanwhile, the waste anesthetic gas purification device is suitable for industrial production. And after the previous activated carbon purification filter element is saturated, the next activated carbon purification filter element is automatically switched to work, so that the continuity of purification operation in the replacement operation process is ensured.

The utility model relates to the technical field of wheel hub detection, in particular to a wheel hub fixing device for aluminum alloy wheel hub dynamic balance detection equipment, which comprises a dynamic balancing machine, a lifting mechanism, an output shaft, a limiting plate and a mounting component, the lifting mechanism is mounted at the bottom of one side of the dynamic balancing machine, the output shaft is arranged at the top of one side of the dynamic balancing machine, and the limiting plate is arranged on the output shaft. The limiting plate is installed on the outer side of the output shaft, the output shaft is sleeved with the installation assembly, and the installation assembly comprises a threaded pipe, a conical block, a lantern ring, a screw and a limiting insertion block. According to the hub fixing device for the aluminum alloy hub dynamic balance detection equipment, a hub is lifted to the position of the output shaft through the auxiliary lifting mechanism, the physical strength needed by workers for carrying is reduced, and the working efficiency is improved. And the hub limiting area is adjusted according to the size of the hub to be detected, so that the hub is fixed at a proper position on the output shaft, and the hub rotation stability is improved while the hub fixing effect is ensured.

The utility model discloses a laser cutting machine for pipes, which relates to the field of laser cutting technology, and includes a workbench, a first mounting groove and a clamping mechanism, wherein the first mounting groove is arranged inside the workbench, the clamping mechanism is installed inside the first mounting groove, and the clamping mechanism includes a first forward and reverse motor. It can control the operation of the first forward and reverse motor through the clamping mechanism and the control switch, and drive the two clamping components to adjust to a suitable distance according to the length of the pipe under the cooperation of the first threaded column, the second threaded column, the first threaded cap, the first support block and the first limit slide rod, and then place the two ends of the pipe on the upper surfaces of the two second clamping blocks respectively, and drive the first clamping block to move downward to stably clamp the pipe by rotating the rotating rod, under the cooperation of the third threaded column, the threaded tube and the telescopic rod, and this setting can stably clamp and fix pipes of different sizes to avoid accidental sliding of the pipe during cutting.

The invention relates to the technical field of cable plugs, in particular to a cable plug capable of being quickly butted and separated. Comprising a first sleeve shell, an internal threaded pipe and a second sleeve shell, the internal threaded pipe is rotationally arranged on the first sleeve shell, a threaded groove is formed in the outer side of the second sleeve shell, a socket is arranged in the second sleeve shell, and a plug is arranged in the first sleeve shell. Through cooperation of the socket, the plug, the current-conducting plate, the sliding block, the fastening block and the screw rod, all wires in a cable can be in butt joint with the plug or the socket at a time, time and labor are saved, operation is convenient, errors are not likely to happen, and then by screwing an inner threaded pipe into a threaded groove or screwing the inner threaded pipe out of the threaded groove, the cable can be conveniently and rapidly connected. When the socket and the plug are in butt joint, the socket and the plug can be quickly in butt joint or separated, and when the socket and the plug are in butt joint, the air bag can be automatically utilized to seal the joint between the first sleeve shell and the second sleeve shell, so that moisture is prevented from invading into the first sleeve shell and the second sleeve shell, and short circuit or corrosion of the socket or the plug is avoided.

The utility model discloses a fire-fighting water pipe pressure testing device, and specifically relates to the fire-fighting water pipe testing technology field, the fire-fighting water pipe pressure testing device comprises a connecting seat and a support bench arranged on the upper part of the connecting seat, the top end of the connecting seat is provided with a water storage tank, the connecting seat is provided with a device groove beside the water storage tank, and the device groove is internally provided with a high pressure water pump. A water supply pipe is fixedly installed at the output end of the high-pressure water pump, and the other end of the water supply pipe communicates with the water distribution box. One end of each hose is fixedly provided with a threaded pipe disc matched with the corresponding second threaded hole, and the other end of each hose is fixedly provided with a flange plate. According to the pressure testing equipment for the fire-fighting water pipes, in the actual use process, the high-pressure water pump is arranged for fire fighting, water in the water storage tank is input into the water distribution tank at high pressure through the high-pressure water pump, the multiple hoses are arranged on the water distribution tank, the fire-fighting water pipes are connected with the hoses respectively, and therefore pressure testing is conducted on the multiple fire-fighting water pipes at the same time.

The invention belongs to the technical field of threaded pipe machining, and particularly relates to an intelligent control method, device and equipment for self-adaptive force control of a grinding device and a medium. Comprising the following steps that real-time data of a polishing device in the polishing process are collected; real-time data in the polishing process are analyzed, and control data of preset polishing force Fd are obtained; based on the control data of the preset polishing force, the polishing device is controlled in real time to reach the preset polishing force; by acquiring the polishing force data in real time and analyzing and acquiring the control data of the preset polishing force, the polishing quality of the pipeline is accurately controlled, so that the actual polishing force quickly and accurately approaches the preset polishing force, and the polishing effect on the threaded pipe is optimized.

The utility model relates to the technical field of steel beam welding, in particular to a large I-beam welding platform which can adjust the clamping position and the supporting position according to the size of an I-beam, improve the clamping and fixing effect of the I-beam, avoid supporting deviation, improve the supporting stability and improve the practicability of the device. Comprising two sets of I-shaped steel arranged side by side, a plurality of sets of connecting beams are fixedly connected between the two sets of I-shaped steel at equal intervals, a bottom plate is fixedly welded to the top ends of the two sets of I-shaped steel and located over the connecting beams, and a left vertical plate and a right vertical plate are fixedly connected to the top end of the bottom plate in a bilateral symmetry mode; and two sets of limiting guide grooves are fixedly formed in the right vertical plate in a front-back symmetrical mode, limiting sliding blocks are installed on the two sets of limiting guide grooves in a sliding mode, adjusting studs are installed on the two sets of limiting sliding blocks in a screwed mode, knobs are fixedly connected to the right ends of the two sets of adjusting studs, and pressing blocks are fixedly connected to the left ends of the two sets of adjusting studs.

The invention discloses a threading pipe sealing air pressure detection device, and belongs to the technical field of threading pipe production. A threading pipe sealing air pressure detection device comprises an operation table, first rectangular sliding grooves are formed in the surfaces of the two sides of the upper end of the operation table, a moving assembly is connected into an inner cavity of each first rectangular sliding groove, and one end of each moving assembly is connected with an air pressure pump; the frame body connecting assembly adopts a double annular groove structure composed of a first annular connecting block and a second annular connecting block, the inner diameter and the outer diameter of the frame body connecting assembly are precisely matched with the end of the threading pipe, the arc-shaped guiding design is matched, the butt joint sealing performance is guaranteed, the pipe body is prevented from being scratched, and through the linkage feedback design of the air pressure jacking assembly and the polishing assembly, the polishing efficiency is improved. The air pressure in the pipe pushes the sealing block to ascend and descend, so that the sealing performance is judged, and compared with manual observation of a pressure gauge, tiny leakage points of the threading pipe can be accurately recognized, missing detection and false detection are avoided, and the detection precision is further improved.

The invention relates to an aluminum alloy cable connector, and belongs to the technical field of cable installation. The aluminum alloy cable connector comprises a crimping pipe, two insulating threaded pipes and two threaded sleeves, the two insulating threaded pipes are fixedly connected to the two ends of the crimping pipe respectively, and the two threaded sleeves are in threaded connection to the opposite ends of the two insulating threaded pipes respectively; the sealing device is arranged on the surface of the crimping pipe in a sleeving manner; a user only needs to rotate the threaded sleeve to perform internal and external sealing operation at the same time, and in the process, the first internal sealing mechanism not only can perform double sealing on a gap between the aluminum alloy cable and the insulating threaded pipe, but also can firmly bond the aluminum alloy cable and the insulating threaded pipe together, so that the sealing effect is good. Therefore, the aluminum alloy cable protection layer and the insulation threaded pipe are connected more tightly, and the overall connection strength of the connector is improved.

The invention discloses a pneumatic grabbing mechanism manipulator structure of an automatic wire plugging machine, which comprises a driving bin, one side of the driving bin is provided with a moving mechanism B, one end of the moving mechanism B is provided with a moving mechanism A, one end of the moving mechanism A is provided with a lifting rod, the bottom of the lifting rod is provided with a mounting plate A, the bottom of the mounting plate A is provided with a fixing plate A, and the bottom of the fixing plate A is provided with a clamping mechanism. A mounting plate B is arranged on one side of the fixing plate A, and a sliding groove is formed in one side of the mounting plate B; under the cooperation of the fixing plate A, the mounting plate B, the mounting frame, the suction cups, the annular pipe, the threaded pipe and the mounting head, in the process that objects need to be grabbed and transported, multiple sets of objects can be grabbed at a time for transportation in a suction mode, and under the action of the multiple suction cups, the objects can be conveniently transported. In the grabbing process, the objects can be effectively arranged, and in the process that the objects are grabbed to other stations, the objects can be effectively prevented from being stacked.

The utility model relates to the technical field of filter elements, and discloses a detachable filter element for spraying, which comprises a filter cover and a folding filter element, the folding filter element is arranged in the filter cover, the top end of the folding filter element and the top end of the filter cover are respectively provided with a threaded pipe and a sealing threaded cover, the sealing threaded cover is in threaded connection with the threaded pipe, and the folding filter element is arranged in the filter cover. A sewage discharging assembly is arranged at the bottom end of the filtering cover, an output pipe is fixedly connected to the surface of the filtering cover, and a lead screw is installed at the top of the filtering cover through a supporting assembly; the filter has the beneficial effects that the filter cover can be used for loading the folding filter element and supporting the bottom end of the folding filter element, the folding filter element can be quickly disassembled and assembled by screwing the sealing threaded cover and fixedly connecting the folding filter element with the sealing threaded cover, and the folding filter element can be quickly disassembled and assembled by rotating the screw rod and driving the threaded sleeve to move. And the limiting block can be pushed to the top end of the sealing threaded cover, the sealing threaded cover is clamped, and the sealing threaded cover can be reinforced.

The invention relates to the technical field of crop harvesting, and discloses crop harvesting equipment which comprises a moving seat and a conveying frame installed at the position, close to the other side, of the top of the moving seat, a screening frame is installed at the position, close to the rear side, of the top of the moving seat, and a harvesting platform A is fixedly installed at the position, close to the rear side, of one side of the moving seat; a harvesting platform B is arranged on the front side of the harvesting platform A. A moving block is fixedly installed on the rear side of the harvesting platform B. The bottom of the moving block is slidably connected with the moving base. An adjusting assembly is arranged on the rear side of the harvesting platform A and the rear side of the harvesting platform B. Under cooperative use of the adjusting assembly and the harvesting assembly, the harvesting platform A and the harvesting platform B can be adjusted. When a rocking wheel is driven, a threaded pipe fixed to the rocking wheel can rotate, a harvesting platform B can move forwards through a threaded rod in threaded connection with the interior of an inner cavity of the threaded pipe, the distance between the harvesting platform A and the harvesting platform B can be adjusted, and the device is suitable for mechanical harvesting of soybeans flexibly planted at intervals in small plots in southern hilly areas.

The invention relates to the technical field of laser measuring instruments, and discloses a device for measuring roadway roof separation by laser, which comprises a roadway roof, a laser probe, a first threaded pipe, a second threaded pipe and a mounting mechanism, and is characterized in that the laser probe is mounted on the first threaded pipe and is connected with a cable; the mounting mechanism is used for mounting the second threaded pipe on the first threaded pipe; the mounting mechanism comprises a base arranged on the roadway top plate, a rotating mechanism and a lifting mechanism are arranged on the base, and the lifting mechanism is used for feeding the laser probe, the first threaded pipe and the second threaded pipe into drill holes formed in the roadway top plate. The device for laser measurement of roadway roof separation overcomes the defects that in the prior art, equipment is large in occupied area and depends on the stability of a bottom plate, and the measurement precision is prone to being interfered, and the roof separation measurement device is more efficient, more accurate and more suitable for the underground complex environment.

The invention is suitable for the technical field of laser cutting, and provides a cutting device for road and bridge steel formwork machining, which comprises bases, conveying units rotatably mounted on the inner sides of the adjacent bases, horizontal adjusting mechanisms symmetrically arranged at the top of the conveying units and abutting against steel formworks, and driving adjusting mechanisms arranged at the top ends of supporting rods. The box body is installed at the bottom of the transverse plate, a laser generator is arranged in the box body, the cooling system is arranged on the laser generator, the top end of the self-adaptive adjusting mechanism is connected with the water inlet pipe, and the bottom end of the self-adaptive adjusting mechanism is connected with the threaded pipe so that the laser generator can be adjusted according to the temperature when the laser generator works. The flow rate of cooling liquid is automatically adjusted; the cutting device is convenient to assemble and disassemble, stable in structure during cutting, high in cutting precision and capable of automatically adjusting the cooling flow so as to accurately control the working temperature of the laser generator to enable the laser generator to be in a proper environment temperature, and the utilization efficiency of cooling liquid is improved while high-efficiency operation of the laser generator is guaranteed.

The invention belongs to the technical field of surveying and mapping engineering, and particularly relates to ground levelness surveying and mapping equipment for surveying and mapping engineering, which comprises a base, adjusting screw rods are respectively inserted into four screw holes formed in the upper surface of the base close to four corners, and a surveying and mapping assembly is arranged on the surface of the base. The surveying and mapping assembly comprises an L-shaped supporting rod, an external thread pipe sleeve, a first rectangular frame, a first hexagonal rod and a built-in pipe sleeve, and the built-in pipe sleeve is inserted into a first circular groove formed in the upper surface of the base; the roll paper drum can vertically move according to the level condition of the ground, the recording pen draws a zigzag continuous line segment on the surface paper of the roll paper drum to reflect the level measurement condition of the ground, and during rotation of the L-shaped supporting rod, the sliding block slides to pull the balance weight ball through the pull rope to store force, so that the rotation radius is automatically changed, and the surveying and mapping range is adjusted.

The utility model discloses a logistics transportation wooden pallet, which belongs to the technical field of logistics transportation and comprises a pallet body, a plurality of fixing mechanisms and a first protective plate, the fixing mechanisms are arranged on the surface of the pallet body, the first protective plate is fixedly connected to the upper ends of the fixing mechanisms, and the fixing mechanisms are arranged on the pallet body. The logistics transportation wood pallet comprises a pallet body, a first protection plate is arranged on the upper end of the pallet body and symmetrically arranged on the two sides of the pallet body, a second protection plate is arranged at the upper end of the first protection plate, and an adjusting mechanism is fixedly connected to the side face of the second protection plate. According to the goods transportation device, a threaded column is driven to rotate only by rotating a rotary knob, and a second protection plate is driven to move under the cooperation of the threaded column and a threaded pipe, so that the purpose of adjusting the protection height is achieved, meanwhile, goods are protected, and the goods are prevented from falling off in the transportation process.

The utility model relates to a steel structure beam with a two-end splicing structure, which comprises a main beam, U-shaped supports are arranged at two ends of the main beam, one side of each U-shaped support is connected with a fixing shaft in a penetrating manner, one end of each fixing shaft is fixedly connected with the main beam, and the other end of each U-shaped support is fixedly connected with a mounting plate. First rotating supports are arranged on the upper side and the lower side of the mounting plate correspondingly, screws are connected into the first rotating supports, one ends of the screws are connected into threaded pipes, the other ends of the threaded pipes are connected into spherical seats, and the spherical seats are arranged in second rotating supports. The U-shaped support and the installation plate are arranged on the two sides of the main beam, the angle of the installation plate can be adjusted by adjusting the threaded pipe and the lead screw on the upper side and the lower side of the main beam, the installation plate can be installed on a steel structure in a rotating mode at a proper angle, and the lead screw and the threaded pipe can support the installation plate. And the supporting force and stability of the mounting plate to the main beam are improved.

The utility model discloses a hydraulic lifting ridge crossing device of a rice transplanter, and relates to the technical field of rice transplanters. The device comprises a rack, one side of the rack is fixedly connected with an adjusting mechanism, the other side of the rack is fixedly connected with a shell, an inner cavity of the shell is slidably connected with a sliding rod, one side of the sliding rod extends out of the shell, and one side of the adjusting mechanism and one side of the sliding rod are both fixedly connected with a lifting mechanism. The adjusting mechanism comprises a first mounting frame, and one side of the first mounting frame is fixedly connected with the rack. The motor is started through an external controller, the motor drives the threaded rod to rotate, the threaded rod drives the threaded pipe to move, the threaded pipe can drive the connecting frame to horizontally move under the limiting action of the sliding block and the sliding groove, and the position of the lifting mechanism can be adjusted according to the ridge width by adjusting the length of the connecting frame; therefore, the purpose of convenient operation is achieved, and the trafficability of the rice transplanter during ridge moving is improved.

The utility model discloses a fork sleeve assembly of a forklift for hoisting goods, which belongs to the technical field of matched components of forklifts, aims at solving the problem that the goods are easy to fall off in the process of carrying the hoisted goods with irregular shapes by the forklift, and comprises a limiting hole, limiting rods penetrate through the inner sides of the limiting holes in the upper side and the lower side and are slidably connected with the inner sides of the limiting holes in the upper side and the lower side, and the top ends of the limiting rods are fixed to the left side and the right side of the bottom wall of the fixing plate correspondingly. After the pallet fork sleeve body is inserted into the outer side of the fork teeth, the limiting rod is aligned with the limiting hole, then the grabbing plate is rotated, the lower side fixing screw rod is rotated in the rotating process of the grabbing plate, and therefore the fixing screw rod moves downwards on the inner side of the threaded pipe; and in the downward moving process of the fixing screw rod, the fixing plate drives the limiting rod to move downwards and enables the limiting rod to be inserted into the inner side of the limiting hole, the pallet fork sleeve body and the fork teeth are fixed, and loss caused by falling of goods due to falling of the pallet fork sleeve body in the using process is avoided.

The utility model relates to the technical field of testing fixture structures, in particular to a testing fixture structure for a lower reinforcing plate of an automobile B pillar, which comprises a base, a controller fixedly connected to the top of the base, a stabilizing plate fixedly connected to the top of the base, and a connecting plate fixedly connected to the outer side of the stabilizing plate. A first electric telescopic rod is fixedly connected to the top of the connecting plate, a pushing rod is fixedly connected to the bottom of the first electric telescopic rod, a clamping frame is fixedly connected to the bottom of the pushing rod, a threaded pipe is fixedly connected to the outer side of the clamping frame, and a threaded rod is in threaded connection with the interior of the threaded pipe. A rotating cover is fixedly connected to the outer side of the threaded rod, a positioning rod is fixedly connected to the end, away from the rotating cover, of the threaded rod, and a moving groove is formed in the connecting plate. The reinforcing plate positioning device is simple in structure and convenient to use, reinforcing plates of different specifications can be positioned, and meanwhile the positioning position can be adjusted.

The utility model belongs to the field of wastewater treatment, in particular relates to multi-effect evaporative crystallization wastewater treatment and recovery equipment, and provides the following scheme aiming at the problems that the contact time with steam is difficult to adjust according to wastewater with different concentrations and the concentration process of the wastewater is inconvenient to manage more effectively in the multi-effect evaporative crystallization wastewater treatment and recovery equipment in the prior art. The device comprises a plurality of evaporators, each evaporator comprises a tank body, a liquid inlet end and an air inlet end are arranged on one side of the outer wall of each tank body, a liquid conveying end is arranged at the bottom end of each tank body, and an air outlet end is arranged on the other side of the outer wall of each tank body; the multiple sets of threaded pipes are used for prolonging the contact time of the wastewater and steam, water is gradually evaporated to form steam, solute is gradually concentrated, the steam and the concentrated wastewater enter the next evaporator, harmful substances in the wastewater are effectively separated out in the evaporation and crystallization process, and pollution to the environment is reduced.

The utility model discloses a circuit board heat dissipation structure, which comprises a circuit board and a chip, the chip is arranged at the top of the circuit board, the top of the chip is provided with a heat dissipation sheet, the left side and the right side of the heat dissipation sheet are respectively provided with a movable plate, one side of each movable plate close to the heat dissipation sheet is fixedly connected with two fixed rods, and the two fixed rods are fixedly connected with the circuit board. According to the circuit board heat dissipation structure, the movable plate drives the fixed rod to be inserted into the side wall of the heat dissipation sheet, the screw penetrates through the through hole to be screwed in the inner cavity of the screw hole, then the cylinder is rotated by means of mutual cooperation of the internal hexagonal wrench and the groove, and the cylinder drives the threaded pipe to rotate on the outer side of the screw through the connecting ring. The threaded pipe moves downwards relative to the screw under the action of the threads, the threaded pipe extrudes the movable plate downwards, the movable plate drives the fixing rod to move downwards, the fixing rod presses the cooling fins downwards, and therefore the cooling fins are fixed, the cooling fins do not need to be fixed through glue, the installation time is greatly shortened, the working efficiency is improved, and stability is high.

The utility model relates to the field of sewage sampling, and discloses a sewage detection stratified sampling device, which comprises three sampling buckets, a support column and a sliding rod, the sampling buckets are internally provided with mounting cavities, the middle part of the support column is provided with a sliding chute, and the sliding rod slides in the sliding chute. The lower ends of the supporting columns penetrate through the sampling barrel and extend out of the sampling barrel, a plurality of sliding cavities are formed in the two sides, close to the sampling barrel, of the middle of the outer wall of a supporting column rod body, and connecting rods are fixedly connected to the two sides, close to the sampling barrel, of the middle of the outer wall of a sliding rod body. According to the stratified sampling device, when the stratified sampling device is used for sampling sewage, the stratified sampling device is in threaded connection with the filter screen on the outer wall of the threaded pipe, water plants, floating objects or other garbage in a sampling water area can be effectively prevented from blocking the water taking hole, the sampling process is ensured to be smoothly carried out, and in addition, the threaded connection mode is convenient to mount and dismount and simple and convenient to operate. And when the filter screen needs to be replaced or equipment needs to be maintained, a worker can quickly finish operation, so that the maintenance cost is reduced.

The utility model relates to the technical field of injection molding machine nozzles, in particular to an injection molding machine nozzle with an anti-blocking function. An injection molding machine nozzle with an anti-blocking function comprises a T-shaped pipe, a hollow threaded pipe and the like, the bottom of the T-shaped pipe is fixedly connected with the hollow threaded pipe, and the front side of the upper portion of the T-shaped pipe is fixedly connected with a conical nozzle. The T-shaped pipe is provided with an unblocking assembly used for being inserted into the solidified injection molding raw materials and heating and melting the solidified injection molding raw materials, and the unblocking assembly is provided with an auxiliary assembly. By starting the motor a and the motor b, the motor a pushes the electric heating bar to move forwards through the lead screw, the motor b drives the drill bit to rotate synchronously through the rotating shaft to drill solidified injection molding raw materials, the electric heating bar can be inserted conveniently, and after the electric heating bar is in place, the electric heating bar and the T-shaped electric heating sleeve are started to heat the solidified injection molding raw materials internally and externally at the same time to melt the solidified injection molding raw materials rapidly. The nozzle is effectively prevented from being blocked due to solidification of injection molding raw materials, and smooth injection molding operation is guaranteed.

The utility model provides a plate vacuum adsorption tool, and relates to the technical field of plate machining tools. The main body piece comprises a bottom plate and a side vertical plate, the side vertical plate is fixedly and vertically connected to the top face of the bottom plate, and a sliding way is welded to the inner end face of the side vertical plate; a threaded sleeve is clamped in the slide way in a sliding manner; the threaded sleeve is composed of a fixed-axis threaded pipe and a movable threaded pipe, the two ends of the threaded sleeve are connected with connecting plates through bolts, the interior of the fixed-axis threaded pipe is connected with the movable threaded pipe in a threaded meshing mode, and the upper side and the lower side of the movable threaded pipe and the inner wall of the sliding way are fixedly connected with guide plates. A fixed shaft threaded pipe is rotated to drive a movable threaded pipe to move, a telescopic rod is synchronously driven to change the length, a side vertical plate is driven to move through a connecting plate, then the position of a threaded sleeve in the front-back direction is moved, and the tool is suitable for machining of plates of different sizes.