222 results about "Conical tube" patented technology

The invention is suitable for the technical field of tapered-straight composite shell ring processing, and provides a processing method of an integrated tapered-straight composite shell ring, which comprises the following steps: S1, cutting and blanking a steel plate according to the size of the tapered-straight composite shell ring, and cutting out a plate material; s2, preparation work before machining is conducted on the plate material, wherein the preparation work at least comprises groove machining, two-side edge pre-bending and generatrix, symmetric center line and step line drawing; s3, according to the drawn step line, pressing forming is conducted on the plate through a top pressing type plate bending machine, and a formed workpiece is of a composite structure of a semi-cylindrical pipe section and a semi-conical pipe section; s4, the formed workpiece is shaped; and S5, the two shaped workpieces are folded and welded, and the conical and straight composite shell ring is formed. Therefore, not only is the specific process problem of the integrated cone-straight composite shell ring in the bending forming process solved, but also the core advantages of no annular weld joint, high continuity and high performance pursued by the integrated design are achieved by guaranteeing the manufacturing precision and consistency of the integrated cone-straight composite shell ring.

The utility model relates to the technical field of immersion sealing blowing structures, in particular to a chip component end sealing machine immersion sealing blowing structure which comprises a fixing plate, a fan is arranged on the fixing plate, a conical pipe is arranged at the top end of the fixing plate, a corrugated pipe is arranged at the top end of the conical pipe, and a spray head is arranged at the top end of the corrugated pipe. A rotating rod is arranged on one side of the outer wall of the fixing plate, an overturning rod is fixedly connected to the rotating rod in a sleeving mode, the other end of the overturning rod is fixedly connected with one end of the spray head, a driving assembly is arranged on one side of the outer wall of the fixing plate, and the driving assembly is fixedly connected to the outer wall of the rotating rod in a sleeving mode. According to the immersion sealing and blowing structure of the chip component end capping machine, the problems that the angle of a spray head cannot be adjusted in the actual use process of an end capping machine immersion sealing and blowing structure in the prior art, so that resin for sealing and immersing a port is not uniformly distributed on a component and is uneven are solved.

The utility model discloses a corn planting topdressing device, which relates to the technical field of corn topdressing and comprises a blanking pipe with an opening structure at the upper end and a conical pipe integrally connected with the lower end of the blanking pipe, the lower end of the conical pipe is of an opening structure, and a conical head capable of moving up and down is arranged at the opening of the conical pipe. A semispherical groove is formed in the lower end of the interior of the discharging pipe, a discharging opening is formed between the lower end of the semispherical groove and the interior of the conical head, a semispherical part which is integrally formed and connected is arranged at the upper end of the conical head, a vertically-arranged shaft rod is connected to the upper end of the semispherical part, and a plugging block located in the discharging opening is arranged between the shaft rod and the semispherical part; the top dressing device is reasonable in design, the top dressing process can be completed through simple downward pressing and loosening actions, the conical head and the plugging block are ingenious in design, and it is ensured that the amount of fertilizer in the conical pipe is kept consistent every time top dressing is conducted.

According to the technical scheme, the mask smearing bottle based on mask storage comprises a bottle body, a mask squeezing conical head with the lower end in threaded connection with the interior of the bottle body in a sealed mode and a conical pipe with the lower end in threaded connection with the outer circumferential face of the bottle body, and the mask squeezing conical head is located in the conical pipe. The small-diameter opening of the film extruding conical head penetrates through the small-diameter opening of the conical pipe, and the conical pipe is further connected with a mask smearing brush located at the lower end of the small-diameter opening of the film extruding conical head. When the mask smearing device is used, the bottle body is squeezed, so that a mask flows to the mask smearing brush from the small-diameter opening of the squeezing conical head along the squeezing conical head, then the mask is smeared on the face through the mask smearing brush, mask smearing is achieved, and after the mask smearing device is used, the mask smearing brush is detached and cleaned; the mask is extruded out of the bottle body by extruding the bottle body, so that the mask can be prevented from being polluted, the contact area of the mask and air is small, the moisture loss of the mask is reduced, and the use skin feeling of the texture of the mask is kept.

The utility model discloses a heat-resisting structure of a smoke exhaust fan, and relates to the technical field of fans, the heat-resisting structure comprises a main pipe, a first conical pipe, an air inlet pipe, a second conical pipe and an air outlet pipe, the right end of the main pipe is fixedly communicated with the first conical pipe, the right end of the first conical pipe is fixedly communicated with the air inlet pipe, the upper end of the main pipe is provided with a mounting groove, and the main pipe is provided with a fan smoke exhaust mechanism. A dust filtering mechanism and a dust cooling and falling mechanism are arranged at the inner end of the air inlet pipe, the dust cooling and falling mechanism is arranged on the right side of the dust filtering mechanism, the fan smoke discharging mechanism is used for discharging smoke dust and isolating the stepping motor outside, and the dust filtering mechanism is used for filtering the external smoke dust. The stepping motor can be arranged at the outer end of the main pipe through the fan smoke exhaust mechanism, the stepping motor is separated from high-temperature smoke dust, the high-temperature smoke dust is prevented from being attached to the surface of the stepping motor, the heat dissipation efficiency of the stepping motor is improved, and the smoke exhaust effect of the main pipe is facilitated.

The utility model discloses a fastening structure of copper clad aluminum material in the technical field of fastener, including bolt and setting first conical washer, conical pipe, second conical washer and nut on bolt in assembly direction in proper order, the head of bolt and first conical washer are located one end of copper clad aluminum material, second conical washer and nut are located the other end of copper clad aluminum material, and conical pipe is located inside copper clad aluminum material. This fastening structure adopts the symmetrical structure of "bolt + conical washer + conical pipe + conical washer + nut", and through conical pipe and upper and lower conical washer constitutes clearance compensation unit, when aluminum matrix produces plastic deformation because of high temperature, conical pipe fills the clearance through axial slight expansion, and lower conical washer taper surface self -locking effect locks residual pre -tightening force simultaneously, forms the closed -loop control of deformation -compensation -locking, realizes stress self -adaptive adjustment through the geometric adaptation of rigid taper surface, and it has good application prospect in the fastening of copper clad aluminum material.

The utility model relates to a centrifuge tube rack which comprises a centrifuge tube inserting piece, the centrifuge tube inserting piece is an open conical tube, and a first notch axially extending to the bottom is formed in a conical body of the centrifuge tube inserting piece; the first gap enables the left front part and the right front part on the two sides to be overlapped in the radial direction and can be wound or unfolded in the circumferential direction. The centrifugal tube clamping device is simple in structure, easy and convenient to operate, capable of adapting to centrifugal tubes of various specifications and capable of achieving tight attachment and stable clamping of the centrifugal tubes.

The present application relates to the technical field of deep well natural gas exploitation, and particularly relates to an oil and foam removal separation device and a use method. The device comprises an inertial separator and a cyclone sand remover. The inertial separator comprises an inertial chamber, a conical tube and a gas distribution cone. The conical tube is located in the inertial chamber, the uphole section of the production string penetrates the bottom plate of the inertial chamber and is fixedly connected with the small end of the conical tube. The tip of the gas distribution cone is inserted into the large end of the conical tube, and there is a gap between the conical surface of the gas distribution cone and the inner wall of the conical tube. The other end of the gas distribution cone is provided with a connecting part which is fixedly connected to the top plate of the inertial chamber. The gas inlet pipe of the cyclone sand remover penetrates the top plate and is connected to the side of the connecting part which is towards the inside of the gas distribution cone. The device can avoid the rock and soil debris from entering the cyclone sand remover, thereby avoiding the impact damage of the rock and soil debris to the cyclone sand remover, and can also realize the continuous exploitation and separation of the deep well raw gas.

The utility model relates to insect situation monitoring technical field, concretely relates to an agricultural insect situation monitoring device, through the collection cover on the embedded connection has a plurality of conical tubes, the inboard of collection cover is installed with the moth lamp, the inboard slidingly connected with the bearing frame of frame body, and the both sides of the top of bearing frame are equipped with the bearing rod, and two bearing rods are rotatably connected between the inner wall of frame body, a plurality of broken rods are fixedly connected on two bearing rods, and the both sides of one end of two bearing rods are engagedly connected, and the operator can complete insect body collection and replacement without complicated dismounting operation, the use convenience and maintenance efficiency of equipment are improved significantly, can carry out automatic broken processing to insect body after its collection, effectively reduces insect body accumulation volume, improves the space utilization of bearing frame, prolongs the continuous working time in single monitoring period, avoids the influence of subsequent trapping effect because of too much insect body accumulation.

The utility model belongs to traditional chinese medicine processing equipment technical field, concretely is a kind of traditional chinese medicine decoction pieces adjustable screw unloading mechanism, including connecting frame, the bottom surface of connecting frame is fixedly connected with telescopic ring, the bottom surface of telescopic ring is fixedly connected with conical tube, the bottom end of conical tube is fixedly connected with discharge pipe, the inside of connecting frame, telescopic ring, conical tube and discharge pipe is commonly provided with spiral shaft, the top of connecting frame is respectively provided with controller and rotating electrical machine, the output of rotating electrical machine penetrates connecting frame and is fixedly connected with the top end of spiral shaft, the upper surface of connecting frame is fixedly connected with feed pipe, the outer surface of telescopic ring is provided with two electric push rods, and the telescopic end of each electric push rod is fixedly connected with connecting plate, specifically, the utility model first drives telescopic ring and conical tube linkage through electric push rod, realizes flexible adjustment of discharge port height, accurately adapts different specifications receiving container, avoids material spilling or blocked conveying, improves scene applicability and operation convenience.

This invention discloses a defoamer for detecting liquid level under foam in liquids containing solid particles and bubbles, comprising a particle discharge pipe, a bubble guide pipe, a bubble collecting cone, a bubble discharge pipe, a liquid guide pipe, and a liquid level testing chamber. Except for the bubble discharge pipe, all other structures are coaxially arranged with their axes perpendicular to the horizontal plane. The defoamer for detecting liquid level under foam is placed in the liquid containing solid particles and bubbles. The lower end of the particle discharge pipe is connected to the liquid containing solid particles and bubbles, and the upper end of the particle discharge pipe is connected to the bubble guide pipe. The bubble guide pipe is formed by connecting two conical tubes with the same small ends at their small ends. One large end of the bubble guide pipe is connected to the upper end of the particle discharge pipe, and the other large end of the bubble guide pipe is connected to the bottom of the liquid guide pipe.

The utility model discloses a polyester staple fiber winding bobbin, which relates to the technical field of polyester staple fiber production and processing, and comprises a bobbin, one end of the bobbin is provided with a rotating shaft hole, and the outer wall of the bobbin is provided with a winding groove; the conical pipe is communicated with the bobbin, and the conical pipe is detachably connected with the bobbin; the take-up slotted hole is formed in the end, away from the conical pipe, of the bobbin, and the take-up slotted hole is arranged in a strip shape; the hook surface layer is arranged on the inner wall of one end, far away from the conical tube, of the bobbin, and the hook surface layer is made of a hook surface with small hooks. According to the utility model, the tail line of the polyester staple fiber is clamped in the take-up slot and is hooked on the hook surface layer on the inner wall of the bobbin, so that the problem that the tail line is difficult to find and loose is solved.

The utility model relates to the field of sounding pipe anti-blocking devices, and discloses a sounding pipe anti-blocking device which comprises a splicing pipe, the top of the splicing pipe is in threaded connection with a top pipe, the bottom of the top pipe is in threaded connection with a conical pipe, and the left side of the outer wall of the splicing pipe is fixedly connected with a motor. The output end of the motor penetrates through the splicing pipe and is fixedly connected with a bevel gear, a rotating ring is rotationally connected to the middle of the inner wall of the top pipe, a plurality of tooth grooves are formed in the top of the inner wall of the rotating ring, and the outer wall of the bevel gear is connected with the inner walls of the tooth grooves in an engaged mode. According to the utility model, a plurality of splicing pipes, a limiting connecting ring and a linkage ring are sequentially in threaded connection, the top splicing pipe is connected with a top pipe, and the bottom splicing pipe is connected with a conical pipe, so that fluid is discharged under the guidance of a spiral plate, a motor is started to drive a conical gear to rotate, a rotating ring rotates along with the conical gear, and the spiral plate scrapes off impurities; therefore, assembly can be carried out according to requirements, and impurities can be cleaned better.

The utility model relates to a heat supply unit automatic exhaust equipment technical field, specifically speaking is a kind of heat supply unit primary network supplement secondary network automatic exhaust device, including jar body, the water inlet pipe and water outlet pipe for supplementing water are provided in the jar body periphery;Water source after the turbulence of the type plate will enter conical pipe, the spiral groove of conical pipe inner periphery is convenient to the water source and makes water source form spiral force pass through conical pipe and enter the bottom side of jar body, simultaneously, small particle solid and float carried in water source can be thrown to the inner wall on the bottom side of jar body under the centrifugal force generated by spiral conveying, and it is convenient to settle in jar body bottom, and the conical pipe of conical structure is convenient to the interception of small particle solid and float, and the vertical pipe of ring seat inner periphery in the bottom of conical pipe can be convenient to the water source of reflux and spiral conveying and shunt, to further reduce the condition that small particle solid and float are moved by water source and move accordingly.

The invention discloses a material grinding device with a sample mixing and separating structure, and relates to the technical field of grinding devices.The material grinding device comprises a tank body, a grinding disc and a fixing disc, the grinding disc and the fixing disc are arranged in the tank body, a sample separating mechanism is arranged on one side of the tank body and comprises a sampling pipe and a sampling bottle, and the sampling pipe and the sampling bottle are arranged on one side of the tank body; a first baffle plate and a second baffle plate are respectively arranged in the sampling pipe; the designed sample separation mechanism and the moving part are combined, material samples are discontinuously and continuously extracted in real time in the grinding process, sampling detection is facilitated, the sample separation process can be completed under the condition that the grinding device does not stop, meanwhile, the moving part drives the two sets of arc-shaped clamping plates to move in the opposite directions, and the sample separation efficiency is improved. The sampling bottles with different diameters and different lengths can be tightly clamped, so that the inclined plane pipes of the sampling bottles are always in tight contact with the inner wall of the conical rubber in the conical pipe.

The utility model relates to the technical field of laser welding, and discloses a smoke removal device for laser welding, which comprises a fixed pipe, the bottom of the fixed pipe is fixedly connected with a conical pipe, the bottom of the conical pipe is fixedly connected with a flow guide pipe, and the bottom of the flow guide pipe is fixedly connected with a smoke suction hood. The device comprises a flow guide pipe, a filtering assembly used for filtering smoke dust is arranged in the flow guide pipe, butt joint plates are fixedly connected to the front side and the rear side of the filtering assembly, clamping blocks are fixedly connected to the front side and the rear side of the exterior of the flow guide pipe, clamping plates are rotatably connected to the interiors of the two clamping blocks, and connecting rods are fixedly connected to the front sides of the two clamping plates. And the front sides of the two connecting rods are fixedly connected with cam discs. According to the filter assembly, the cam disc is rotated to enable the clamping plate to rotate, the sliding rod is extruded, the spring is compressed, after the cam disc is rotated by 90 degrees, the sliding rod is clamped into the clamping groove under the action of the spring, rapid installation is completed, the replacement efficiency of the filter assembly is greatly improved, and the equipment maintenance time is shortened.

The utility model discloses a kind of chlorantraniliprole processing reaction kettle feed pipe, comprising: reaction kettle, the upper surface rear end of the reaction kettle is inserted with feed pipe, the upper end of the feed pipe is equipped with first pipeline butt joint, the top of the first pipeline butt joint is fixedly connected with conical tube, the upper end of the conical tube is equidistantly equipped with four groups of feed pipe, by sealing ring, it is convenient to carry out secondary sealing protection to second pipeline butt joint, potential leakage is controlled in a limited range, to greatly improve security, by locking mechanism, it is convenient to lock the sealing ring after splicing, ensure the effectiveness of sealing ring sealing protection, by fastening mechanism, a certain pressure is applied to second pipeline butt joint, and then second pipeline butt joint can be better sealed for pipeline connection place, prevent the situation of leakage from occurring at pipeline connection place, and then the security of agricultural production can be improved.

The invention belongs to the technical field of smoke dust recycling, and discloses an antimony outlet smoke dust recycling device and method in the antimony ingot smelting process, the antimony outlet smoke dust recycling device comprises a bag-type dust collector shell, a motor is started, the motor drives a rotating shaft and a negative pressure fan to rotate, and negative pressure is generated downwards in the rotating process of the negative pressure fan; negative pressure enters the multiple conical pipes through the conical hopper and the six-pipe barrel and enters the multiple filter element barrels through the multiple conical pipes respectively, so that negative pressure is generated in the filter element barrels at the same time, airflow can be evenly distributed and enter the filter element barrels, each filter element barrel can effectively participate in the filtering process, and the filtering efficiency is improved. The overall filtering efficiency is improved. When the rotating shaft rotates, the fan is driven to rotate, so that the fan disturbs air flow, smoke entering the shell of the bag-type dust collector flows upwards along the bottom of the special-shaped barrel, and the smoke can be dispersed all around in the flowing process through stirring of the fan, so that the smoke suction uniformity of each filter element barrel is further promoted.

The utility model relates to the technical field of handrails, in particular to a high-strength stair handrail which comprises an inclined rod and a cross rod, an elbow is assembled between the inclined rod and the cross rod, and a plurality of groups of supporting rods for supporting are assembled on the bottom end surface of the elbow, the bottom end surface of the inclined rod and the bottom end surface of the cross rod; when the handrail is installed, the conical pipes at the two ends of the outer side of the elbow can be in butt joint with the conical bases at the outer side ends of the transverse rod and the inclined rod, meanwhile, welding is convenient after butt joint is completed, the welding position is located between the two sets of ring bodies on the outer sides of the conical pipes and the conical bases, and then a buckle ring base convenient to open and close is taken. The retaining ring seat can be matched with the ring body and clamped on the peripheries of the conical pipe and the conical seat, and then the fastening bolts are connected with the two groups of lug blocks on the periphery of the retaining ring seat, so that the retaining ring seat is convenient to fasten, and the retaining ring seat can wrap and protect a welding position; and the influence caused by breakage of the welding position is reduced.

The utility model relates to a plastic bottle injection molding device which comprises a connecting block, a conical through groove is formed in the connecting block, a cone frustum is coaxially arranged in the conical through groove, the small-diameter end of the cone frustum and the small-diameter end of the conical through groove face the same direction, and a feeding device is installed on the front side wall of the connecting block. An annular sliding groove is formed in the rear side wall of the connecting block, a conical pipe is slidably arranged in the annular sliding groove, the small-diameter end of the conical pipe and the small-diameter end of the cone frustum face the same direction, a connecting plate is arranged on the side wall of the side, away from the small-diameter end of the conical through groove, of the cone frustum, a vertical plate is installed on the connecting block, and a driving mechanism is arranged on the vertical plate. A groove is formed in the side wall of the side, facing the cone frustum, of the vertical plate, and the side wall of the side, facing the cone frustum, of the connecting plate abuts against the end, away from the feeding device, of the conical through groove. The injection molding machine has the beneficial effects that a worker can conveniently carry out injection molding operation on a bottle body, and the worker can conveniently adjust the wall thickness of the injection molded bottle body.

A beamless steel bifurcated pipe design method controlled by a waist line break angle based on a geometric method comprises the following steps that firstly, a taper pipe bus of a beamless steel bifurcated pipe is generated through the geometric method with the waist line break angle as a control condition; 2, generating a projection line of the intersecting line of the beamless steel branch pipe through a geometric method; 3, establishing a three-dimensional model of the beamless steel branch pipe by using the taper pipe generatrix in the step 1 and the horizontal projection of the intersecting line in the step 2; and 4, performing finite element analysis based on the three-dimensional model in the step 3, and rechecking and determining waist line reduction and pipe wall thickness. The geometric method is adopted, the steel bifurcated pipe body shape is designed with the waist line break angle as the control condition, and the design efficiency of the water conservancy project can be improved.

The utility model belongs to the water turbine runner detection technical field, especially relates to a water turbine runner detection device. Its technical scheme is: a water turbine runner detection device, including the seal cylinder, the seal cylinder is connected on the conical tube small door of the conical tube below the runner, be provided with the detector in the seal cylinder, the detector is carried with the propulsion unit, is used for adsorbing the adsorption unit on the blade, the mechanical arm, the detection unit that is connected in the mechanical arm terminal, the navigation unit that is connected with the propulsion unit signal and the communication unit that interacts with the ground. The utility model provides a kind of water turbine runner detection device of drainage-free, detection flexible.

The utility model belongs to the technical field of pipe fitting connection, and relates to an internal direct multi-pass type square pipe quick connector which comprises a base and a conical pipe, and a first square pipe is fixedly installed on the outer wall of one side of the base. The connecting piece has the advantages that the square pipe, the jackscrew, the conical pipe, the two-way pipe, the three-way pipe, the four-way pipe, the five-way pipe and other standard connecting pieces are arranged, the inner diameters of all connectors are uniform, the connecting piece can be matched with square pipes and rectangular pipes with different wall thicknesses, the universality and interchangeability of the connecting piece are greatly improved, the symmetrical design is adopted, and the connecting piece is convenient to use. The connecting piece is composed of a plurality of cast steel connecting pieces which are symmetrically distributed, one connecting piece is provided with two holes with threads and is provided with two high-strength inner hexagonal jackscrews, the opening and closing size of the two symmetrical blocks can be accurately controlled by controlling the tightness of the screws so as to adapt to pipes of different specifications, the single-joint assembling time is shorter than 30 seconds, pre-drilling or welding is not needed, and the assembling efficiency is greatly improved. And the construction period is greatly shortened.

The application discloses a double-wire additive gun body based on cold cathode electron beam internal wire melting additive manufacturing, which comprises an anode, an insulator, an internal cathode, an external cathode, a ring-shaped wire nozzle, a discharge cavity, an upper joint plate, a wire guide pipe, a pipe for cooling the cathode and a high-voltage power supply; the anode is internally provided with the insulator, the lower middle part of the insulator is provided with the internal cathode, the external cathode is annular and connected with the lower part of the insulator; the insulator is internally provided with through holes for the two wire guide pipes, a water cooling channel, a gas feeding channel and a high-voltage power supply channel, the ring-shaped wire nozzle arranged at the lower end of the insulator is a conical tubular with a wide upper part and a narrow lower part, the pipe wall surface of the ring-shaped wire nozzle is provided with a wire feeding channel communicated with the wire guide pipe, the wire feeding double channels in the ring-shaped wire nozzle make the wire passing through point to the annular electron beam focal point, and the discharge cavity is formed between the internal cathode, the external cathode, the ring-shaped wire nozzle and the lower part of the anode shell. The application realizes multiple special functions of parts and adopts double wires to carry out internal wire melting additive manufacturing.

The invention relates to the technical field of valve driving, in particular to a positioner mounting mechanism for a valve pneumatic actuating mechanism. According to the technical scheme, a pneumatic executing mechanism is included, and a limiting switch assembly is installed on the outer surface of the pneumatic executing mechanism and comprises transverse positioning plates fixedly installed at the top and the bottom of the pneumatic executing mechanism through positioning sealing plates; and a positioner connecting shaft is rotationally mounted in the transverse positioning plate and is positioned at the top of the pneumatic actuating mechanism. The wider side of a conical pipe makes contact with the narrower surface of a clamping annular block, extrusion is generated between the conical pipe and the narrower surface of the clamping annular block, the clamping annular block extrudes a storage hollow pipe along a sliding way under limiting of a second spring, a hollow arc cavity frame, an arc-shaped lantern ring and a positioner connecting shaft are relatively tightly connected, mounting gaps are reduced, and the positioning precision is improved. And the movable area of the screw mechanism is reduced, so that screw loosening of the screw is avoided, and the situation that the threaded connection position is loosened or the threads are loosened is avoided.

The utility model relates to the field of lithium carbonate packaging, in particular to a dust collector special for a lithium carbonate packaging opening. A dust collector special for a lithium carbonate packaging opening comprises a supporting frame, supporting rods, a guiding piece, a feeding pipe, a valve, a conical pipe, an air pipe, an air pump and a first dust suction ring, the two supporting rods are fixedly connected to the left portion of the supporting frame, the guiding piece is fixedly connected between the tops of the two supporting rods, the feeding pipe is fixedly connected to the upper portion of the guiding piece, and the feeding pipe penetrates through the guiding piece; the upper portion of the feeding pipe is fixedly connected with a valve, the bottom of the feeding pipe is fixedly connected with a conical pipe, the feeding pipe communicates with the conical pipe, the inner side of the guiding piece is fixedly connected with a first dust suction ring, and the first dust suction ring surrounds the outer side of the conical pipe. According to the lithium carbonate dust removal device, the air pump is matched with the first dust collection ring and the second dust collection ring, lithium carbonate dust generated in the lithium carbonate packaging process is removed, the production safety is improved, the body health of workers is protected, and environmental pollution is reduced.

The utility model discloses a mobile frameless whiteboard, including open circular ring, the open circular ring lower surface is evenly provided with a plurality of universal wheel, and the open circular ring is fixedly connected with the fixed frame, and the fixed frame is provided with the first mounting hole, and the conical sleeve is insertedly connected and fixed in the first mounting hole, and the conical sleeve is fixedly connected with the limit cover, and the limit cover is arranged on the top of fixed frame, and the conical sleeve is insertedly connected and fixed with the conical pipe, and the first support pipe is fixedly connected with the top of conical pipe, and the second support pipe is slidably connected in the first support pipe, the utility model discloses open circular ring combines fixed frame as support seat, and the single telescopic pipe that utilizes the first support pipe and the second support pipe to support whiteboard body has the advantages that the floor space is small, is easy to adjust, and is easy to assemble, and the whiteboard body can be adjusted in multiple angles through the adjusting assembly installation whiteboard body, so that it is more flexible to use, and it is favorable for expanding the application range and improving the use experience of user.

The utility model discloses a rotation-stopping exhaust device for a cooling tower in the field of exhaust, which comprises a shell, the side surface of the shell is connected with a sewer pipe in a penetrating manner, and one end of the sewer pipe close to the shell is connected with a filter screen; one end of the water outlet pipe is sealed through a flange end cover, the other end of the water outlet pipe is provided with a variable-center conical pipe, the other end, away from the water outlet pipe, of the variable-center conical pipe is connected with a connecting pipe with the diameter smaller than that of the water outlet pipe, the top of the outer arc face of the water outlet pipe is connected with an exhaust valve in a penetrating mode, and the exhaust direction of the exhaust valve faces the outer side of the water outlet pipe. By means of the device, the effect of restraining generated vortexes in the water discharging process of the cooling tower can be effectively improved, meanwhile, the air pressure in the exhaust shell can be reduced through the effect of hydrodynamic force, and then bubbles can be rapidly separated from water flow conveniently.

The utility model relates to conical tube bending technical field, concretely to a large -scale conical tube bending die, including lower die seat and upper die seat, the surface of lower die seat is equipped with lower module, and the both sides of lower die seat are penetrated and have fastening bolt, the surface screw thread connection of fastening bolt penetration lower die seat has the nut, the bottom end surface fixed connection of inner groove has spring, and one end of spring is fixedly connected with the pressing plate, and the side wall fixed mounting of pressing plate has second guide rod, and the side wall fixed mounting of the same horizontal plane of insert piece and pressing plate has first guide rod, and the beneficial effect is: can adjust the opening size of lower module, can bend the product of similar specification, when not needing to use the insert piece, can press down second guide rod, slides through second guide rod and first guide rod in the guide groove, and through the elastic force of elastic assembly, the insert piece is retracted to store in the inner groove, when needing to use, can pop it out, thereby not needing to take down the insert piece, prevents the insert piece loss, and the applicability is improved.

The invention relates to the technical field of coal production, and discloses a coal rock tensile strength fracturing probe device which comprises an air expansion pipe, a seamless steel pipe is sleeved with the air expansion pipe, one side of the seamless steel pipe is fixedly connected with an oil pipe, the oil pipe is sleeved with a sleeve located on the inner side of the air expansion pipe, and a plurality of grooves are formed in the outer wall of the air expansion pipe at equal intervals in the axial direction. A plurality of thin metal strips are adhered to the outer surface of the inflatable tube along the axial direction, a pressure relief tube is sleeved outside the inflatable tube, the pressure relief tube is formed by combining a supporting tube and conical tubes, the conical tubes are fixedly connected to two sides of the supporting tube, and a plurality of through holes are formed in the outer side of each conical tube. The technical means that the seamless steel pipe, the oil pipe, the casing pipe, the gas expansion pipe and the pressure relief pipe are matched is adopted, and the defects that in the prior art, fracturing pressure distribution is uneven, coal rock fracture development is uncontrollable, and device recycling is difficult are overcome; and therefore, the technical effects that coal rock tensile strength is accurately fractured, the fracture form can be observed, the repeated utilization rate of the device is high, and the operation safety is high are achieved.