4676 results about "Guide tube" patented technology

The invention discloses an endoscope transparent cap which comprises a rotatable mechanism, a sliding sleeve, a guide pipe arranged on the outer wall of an endoscope and a driving component arranged at the near end of the endoscope. In the rotatable mechanism, an endoscope joint is provided with a first opening, a rotating cap body of a rotating cap is provided with a second opening, and a flexible net basket is arranged outside the rotating cap body and faces the second opening; the endoscope connector sleeves the far end of an endoscope, the rotating cap body rotatably sleeves the endoscope connector, the sliding sleeve sleeves the rotatable mechanism, the flexible mesh basket is compressed in the sliding sleeve, the sliding sleeve and the rotating cap body are connected with the driving component through the first driving tendon and the second driving tendon respectively, and part of the driving tendons penetrate through the guide pipe; the driving component can drive the sliding sleeve to move towards the near end through the first driving tendon so as to expose the flexible net basket, and can drive the rotating cap body to rotate through the second driving tendon so that the second opening can be communicated with the first opening or the endoscope connector can shield the second opening. When the transparent cap for the endoscope is applied, polyps can be stored, so that the polyps can be taken out simply and conveniently, and the efficiency and the operation safety are relatively high.

The invention relates to the technical field of tunnel construction, and discloses a rapid construction method and system for a lower step with an inverted arch of a horizontal rock stratum large-section tunnel, and the method comprises the steps: constructing a three-dimensional geological modeling system to carry out advanced geological forecast on a tunnel construction region; the three-arm drill jumbo is used for conducting self-positioning, geological self-adaptive intelligent hole arrangement, dynamic optimization of drilling parameters and dynamic allocation of drilling tasks through three-arm cooperative control; calculating the vector deviation between the actual excavation contour and the design contour; marking a preferential injection area based on a three-dimensional laser point cloud technology, and dynamically adjusting an injection track and thickness according to back break data; a multifunctional drilling and grouting integrated trolley is adopted for implementing pipe shed supporting, advanced small guide pipe reinforcement, pre-grouting reinforcement and anchor rod reinforcement; the main mechanical arm assists the trolley in drilling and laser scanning acceptance inspection of the feet-lock bolt; re-spraying to the designed thickness by adopting a wet spraying manipulator; the problems that an existing tunnel lower step inverted arch construction method is low in construction efficiency and large in construction risk are solved.

A wire guide module for an ultrasonic wire bonder, comprising a body made of a thermally stable metallic and / or ceramic material, wherein an elongated wire feed-through channel having a wire inlet opening and having a wire outlet opening is provided on the body, and comprising a guide tube provided in the wire feed-through channel. In addition, the invention relates to a thermosonic wire bonder having a wire guide module.

The invention relates to a complex soft rock double-layer primary supporting super-large section tunnel and a construction method. The complex soft rock double-layer primary supporting super-large section tunnel comprises a long pipe shed cover arch supporting system, a deformation control strong supporting structure, an anti-disengaging early-warning lining pouring trolley, a temporary inverted arch deformation control structure and a buffering yielding supporting system. The method has the beneficial effects that the curved surface formwork can be rapidly installed on the upper portion of the guide pipe and the lower portion of the steel arch frame, the installation efficiency is high, stability is good, and the construction period is shortened; a long pipe shed and a small guide pipe penetrate through the deformation control strong supporting structure and are driven into a tunnel, grouting is conducted, the overall stability of the supporting structure is enhanced, and the complex soft rock geology is reinforced; concrete pouring is monitored in real time, and the compactness of vault concrete is guaranteed; section steel is clamped in the inverted arch, reinforcing connecting ribs are welded between the section steel in a penetrating mode, surrounding rock collapse is prevented, and tunnel construction safety is guaranteed. And a buffer yielding support device is arranged between the interface and the double-layer arch frame, so that the pressure at the interface of the layered rock and soil stratum is in smooth transition, and the overall balance is improved.

The present invention discloses a sound feedback mechanism, an injection driving mechanism and an automatic injection device, relating to the technical field of automatic syringes. The sound feedback mechanism is used for an automatic injection device, the automatic injection device includes a guiding tube, the sound feedback mechanism includes a sounding ring, a first energy storage element in an energy storage state and a sound feedback component, and the first energy storage element in the energy storage state provides kinetic energy for the sounding ring. The sound feedback component includes a guiding surface and a terminating surface, and the guiding surface includes a first abutting surface, a second abutting surface and an inclined surface located between the first abutting surface and the second abutting surface. During the movement of the sounding ring, a starting prompt sound is generated when the sounding ring moves from the mounting surface of the guiding tube to the first abutting surface. When the sounding ring moves on the inclined surface and drives the sounding ring to rotate, the first energy storage element can continue to store energy. When the sounding ring moves from the second abutting surface to the terminating surface, a terminating prompt sound is generated. The sound feedback mechanism improves the reliability and stability of sound feedback, and reduces the cost at the same time.

The invention belongs to the technical field of sewage treatment, and particularly relates to a zirconium dioxide production wastewater treatment and recovery device which comprises a flocculation part, a filtering mechanism, a material guide mechanism, a drainage mechanism and a control mechanism, the flocculation part comprises a flocculation basin, an aeration pipe and a guide pipe, one end of the aeration pipe is connected with an external aeration pump, the other end of the aeration pipe extends into the flocculation basin, and the guide pipe is obliquely arranged on the outer wall of the aeration pipe and is communicated with an inner cavity of the aeration pipe; the filtering mechanism comprises a bearing frame, a supporting barrel and a filtering barrel, the supporting barrel is mounted at the upper end of the flocculation basin through the bearing frame, and the filtering barrel is arranged at the bottom of the supporting barrel; the material guiding mechanism comprises a transmission shaft and a material guiding spiral plate, the transmission shaft is rotationally arranged in the supporting cylinder, the material guiding spiral plate is fixedly installed on the radial outer wall of the transmission shaft, and the outer wall of the material guiding spiral plate is attached to the inner wall of the supporting cylinder and the inner wall of the filtering cylinder; through cooperation of the structure, the content of flocculate in the flocculation basin can be reduced, and the sewage flocculation treatment efficiency is jointly improved under mutual promotion.

The invention discloses a planter with a righting structure in the technical field of planting righting, and the planter comprises a walking mechanism, a righting assembly installed at the tail end of the walking mechanism, a guide pipe, a ditching structure and a soil covering structure, and the righting assembly comprises a rack installed at the tail end of the walking mechanism; the chain transmission structures are mounted on the two sides of the rack in pairs; the driving part is mounted on the rack; a plurality of groups of centralizing frames are provided, each group comprises two pairs of centralizing frames, and the two pairs of centralizing frames are rotationally mounted on the chain transmission structures on the two sides respectively; the distance adjusting structure is used for driving the pair of righting frames on the same chain transmission structure to get close to each other; and the pressure regulator is arranged between the righting frame and the chain transmission structure and is used for regulating the clamping force of the righting frame to the seedlings according to the deflection angle of the righting frame. Through cooperation of the righting frame and the distance adjusting structure, the seedlings are righting, it is ensured that the seedlings are kept in a vertical state in the planting process, the situation that the seedlings incline due to influence of external factors is avoided, and therefore the survival rate of the seedlings is increased.

The invention provides a measurement system for the waviness of a neutron conduit. The measurement system comprises a high-precision granite guide rail, a total station, an auto-collimation eyepiece, a computer and a measurement auxiliary assembly. The high-precision granite guide rail provides a stable sliding reference, the total station slides along the high-precision granite guide rail for measurement, the auto-collimation eyepiece is matched with the normal direction of the measurement conduit, and the computer processes data. The system can adapt to measurement requirements of neutron conduits in different geometrical shapes, and the waviness is calculated through a preset formula, and the assembly precision of multiple sections of conduits and the influence on neutron reflection are evaluated; the measurement auxiliary assembly and the jack ensure stable measurement. The system is high in measurement precision, strong in universality, efficient in data processing, good in stability, simple and convenient to operate and capable of guiding design and manufacturing of neutron conduits, reducing production cost and improving neutron flux and experiment accuracy and reliability.

The invention relates to the technical field of dissectors, and discloses a medical ablation electrode dissector which comprises a handle sleeve and further comprises an electric knife head fixedly connected with the handle sleeve, a splicing sleeve fixedly connected to one end of the handle sleeve, a push-pull piece slidably connected with an outer sleeve and a guide pipe fixedly connected between the splicing sleeve and the outer sleeve. The two separators are both connected with the push-pull piece in a sliding mode, the viscous sleeve is fixedly connected to the end, away from the splicing sleeve, of the guide pipe, the electrotome head penetrates through the splicing sleeve and the guide pipe, and the push-pull piece is attached to the guide pipe. Through a sliding connection structure of the push-pull piece and the separator, reciprocating motion of the separator is achieved, active cleaning of the surface of the electrotome head can be completed, impurity splashing caused by outward pushing force of a traditional pushing stripping structure is avoided, the separator is of an arc-shaped structure matched with the surface profile of the electrotome head, stress is uniform during cleaning, the cleaning precision is improved, and the service life of the electrotome head is prolonged. And cleaning blind areas are reduced.

The invention discloses a sealing ring inner diameter detection device and an inner diameter detection method thereof.The sealing ring inner diameter detection device comprises an outer taper pipe and a guide pipe, the guide pipe and one end of the outer taper pipe can be connected in an inserted mode, the outer circumferential face of the guide pipe is movably sleeved with a push pipe, the outer taper pipe is a pipe with the diameter gradually changing from small to large, and when the guide pipe and the outer taper pipe are connected in an inserted mode, the push pipe is inserted into the guide pipe. The small-caliber end of the outer taper pipe is arranged in the push pipe, scales are arranged on one side of the outer taper pipe side by side, and the outer taper pipe is sleeved with a sealing ring. The device is simple in structure and convenient to operate, can quickly and accurately measure the inner diameter of the rotary Glyd ring, and can detect the roundness, elasticity, wear degree, hardness and other performances of the rotary Glyd ring at the same time.

The utility model provides a straightening machine vertical roll mounting structure which comprises a mounting seat, a vertical roll and a vertical roll shaft. The mounting seat is detachably connected with the sliding plate; the sliding plate is installed on the inner side of the guide pipe, a strip-shaped hole corresponding to the installation base is formed in the guide pipe, the installation base is installed on the inner side in the strip-shaped hole, and the guide pipe is fixedly connected with the support; and the driving assembly is used for driving the sliding plate to move. The steel billet straightening device has the advantages that the positions of the vertical rollers and the distance between the two vertical rollers are adjusted through the driving assembly, the steel billet straightening device can still be continuously used by adjusting the positions of the vertical rollers after the vertical rollers are abraded, the steel billet straightening device is suitable for straightening operation of steel billets of different models, the application range is widened, and the wire conduit plays a guiding role; and the moving process of the sliding plate is more stable, and the sliding plate can be prevented from shaking.

The application provides a wire cutting machine tool automatic wire feeding guide mechanism. The application solves the problem that when the water flow contains many impurities, the internal structure of the machine head is abraded, the water flow is uneven, and the wire feeding is unsuccessful. The application directly drives the wire guide tube to pass through the upper machine head and align with the lower machine head after the workpiece, directly feeds the wire in the wire guide tube into the lower machine head, greatly improves the accuracy of wire feeding, and effectively reduces the number of wire feeding failures.

The invention relates to the field of tunnel supporting, and discloses a large pipe shed and advanced small pipe combined tunnel supporting system and a construction method. The tunnel support system comprises a plug wall; a large pipe shed supporting structure; provided is an advanced small pipe supporting structure. The construction method of the tunnel supporting system comprises the steps that S1, the plug wall is constructed, and the guide pipe is pre-buried; s2, a guide pipe is installed; s3, drilling is conducted, pipe shed steel pipes of the large pipe shed supporting structure are installed, and then grouting reinforcement is conducted; s4, a drilling machine is positioned, and follow-pipe drilling is conducted along the guide pipe; s5, holes are cleaned, and grouting of the pipe shed steel pipes is completed; s6, drilling and reserving a slot position of a guide steel pipe of the advanced small guide pipe supporting structure; s7, a guide steel pipe of the advanced small guide pipe supporting structure is installed, and then grouting reinforcement is conducted; and S8, excavation of a tunnel hole body is carried out. The large pipe shed is combined with the advanced small guide pipe, the bearing capacity of the tunnel arch and the consolidation effect of surrounding rock are remarkably improved, and the influence of construction on the existing viaduct pier is effectively reduced.

Systems and methods for a customized reusable guide for shoulder replacements. In an example embodiment, a method comprises providing an alignment compass base, wherein the alignment compass base is configured to enable rotational orientation of a radial offset insert and a K-wire guide tube with respect to a guide base, inserting the guide base component into the alignment compass base, inserting the radial offset insert into the guide base component, rotating, using a first alignment tool, the radial offset insert to a first orientation angle with respect to the guide base component, inserting the K-wire guide tube into the radial offset insert, rotating, using a second alignment tool, the K-wire guide tube to a second orientation angle with respect to the guide base component.

The present invention relates to a nuclear fuel assembly suitable for a small modular reactor (SMR), the nuclear fuel assembly comprising: a spacer grid (110) having 17x17 grid cells; a plurality of fuel rods (120) arranged in the grid cells of the spacer grid (110); guide tubes (130) arranged and fixed in the grid cells of the spacer grid (110); and an upper end fitting (140) and a lower end fitting (150) fixed to the upper end and the lower end of the guide tubes (130), respectively, wherein the guide tubes (130) are characterized in that eight guide tubes are arranged in the main axis directions (Ixx)(Iyy) with respect to the central cell of the spacer grid (110), four guide tubes are arranged in the diagonal direction (Ixy), and sixteen guide tubes are arranged in the non-diagonal directions (Ixxy)(Ixyy).

The invention provides a bird body collecting device for engine bird impact test speed calibration, which comprises a mounting bottom plate and a buffer collector, and is characterized in that the collector comprises a collecting guide pipe, and the guide pipe comprises a vertical section, a bent section and a horizontal section which are communicated in sequence; a buffer assembly is arranged at the bottom of the vertical section and fixed to the bottom plate, and a bird body divider is arranged at an opening of the horizontal section. The front cabin is fixedly connected with the opening of the horizontal section, a speed monitor and an electromagnetic switch device are arranged in the front cabin, an anti-splashing cabin door is arranged at the inlet end of the front cabin, the electromagnetic switch device is connected with the anti-splashing cabin door, and the speed monitor is used for monitoring the flight speed of a bird body and is connected with the electromagnetic switch device; when the speed signal is monitored, the electromagnetic switch device is triggered to control the anti-splashing cabin door to be closed. The device has the advantages of miniaturization, automation, good buffering effect, easiness in operation and the like, and solves the problems of large bird impact, difficulty in residue collection and the like during bird speed calibration.

The embodiment of the invention discloses a concrete vibrating method, a concrete vibrating device, electronic equipment and a readable medium. A specific implementation mode of the method comprises the following steps: in response to starting of concrete vibrating equipment, acquiring a real-time image sequence; according to the real-time image sequence, the vibration state is determined; in response to the vibration state being the first vibration state, generating a vibration area state according to the real-time image sequence; electromagnetic coil control information is generated according to the first temperature signal, the second temperature signal and the vibrating area state; and controlling the ferromagnetic moving body to move in the guide pipe through the electromagnetic coil group according to the electromagnetic coil control information. According to the embodiment, uniform vibration and exhaust of the concrete are achieved, and the concrete pouring quality is guaranteed.

The invention relates to the technical field of oil and gas field and coal bed gas field mining equipment, in particular to a wellhead suspension centrifugal pump drive double-pipe jet flow drainage and mining device and a using method. According to the technical scheme, a lower tubing head four-way joint, a middle tubing head four-way joint and an upper tubing head four-way joint are sequentially installed on a bottom flange, a motor is installed on the upper portion of the upper tubing head four-way joint, and an inner pipe plug-in pump core catcher is installed at the lower end of a submersible water injection centrifugal pump; the lower end of the inner pipe inserted pump core catcher is movably connected with an inner layer oil pipe, and a pump core installed in the double-pipe jet pump is arranged in a pump cylinder of the jet pump. The device has the advantages that due to the fact that a packer is omitted and the device is connected with the double-pipe jet pump, sand-containing liquid in a well can be sucked, and exploitation of natural gas or coal bed gas can be achieved; the inner pipe is inserted into an elastic clamping jaw of the pump core catcher to catch the pump core; and the submersible water injection centrifugal pump and the pump core can be lifted to the ground at one time by hoisting the motor at a ground wellhead, so that the maintenance is convenient.

A locking unit with a hydraulically actuable piston, an electromagnet with a coil and an armature, at least one latching element, a coupling rod, and a magnetic element. The coupling rod connects the magnetic element to the armature or an armature rod which is attached thereto, and a prestressing element fixes the magnetic element in a guide tube radially. As a result, an advantageous position determination is made possible by way of sensing of a magnetic field which is generated by the magnetic element.

The invention discloses an overspeed protection device for a metallurgical electric hoist, and relates to the technical field of cranes. The overspeed protection device for the metallurgical electric hoist comprises the electric hoist, a walking device is fixedly connected to the top of the electric hoist, a connecting shaft is fixedly connected to the right side of a reel of the electric hoist, an overspeed detection mechanism is fixedly connected to the right side of the reel of the electric hoist, and a speed reduction mechanism is fixedly connected to the outer wall of the connecting shaft. The outer wall of the connecting shaft is fixedly connected with a brake mechanism on the right side of the speed reduction mechanism. According to the overspeed protection device for the metallurgical electric hoist, a locking telescopic rod extends and is clamped into a corresponding groove in a locking disc, so that a connecting wheel rolls up a pulling wire, a pulling-up block is lifted upwards from the bottom of a guide pipe, part of energy is converted into potential energy of the pulling-up block, and the speed of a lifting hook of the electric hoist is slowed down; and the disc brake disc is prevented from losing the braking capacity due to overheating.

The utility model relates to the technical field of assembling, in particular to a magnet assembling device which comprises a rack and an adjusting and guiding mechanism arranged on the rack. The adjusting and guiding mechanism is provided with an adaptive groove for temporarily placing the magnet, a first guiding pipe for guiding the magnet to fall into the adaptive groove, a second guiding pipe for guiding the magnet to enter the fixing groove and a pushing unit for pushing the magnet in the adaptive groove to enter the second guiding pipe, and the second guiding pipe is communicated with the adaptive groove; a pressing mechanism and a driving mechanism used for driving the pressing mechanism to downwards press a magnet in a second guide pipe to enter a fixing groove are arranged on the rack, the magnet is guided by a first guide pipe to enter an adaptive groove of an adjusting guide mechanism, and then a pushing unit is operated to push the magnet in the adaptive groove into the second guide pipe; and then the driving mechanism is used for driving the pressing and holding mechanism to downwards press the magnet in the second guide pipe, so that the magnet can be stably embedded into the fixing groove, and the assembling efficiency of the magnet is improved.

The invention discloses an offshore photovoltaic support loading and unloading type shipping and stacking tool and a lightering operation method thereof. The tool comprises a barge widening and reinforcing tool, a photovoltaic support mounting tool and a stacking tool. The barge widening and reinforcing tool is composed of a plurality of sets of extending mechanisms which are symmetrically arranged on ship boards on the left side and the right side of a barge, and each set of extending mechanism is composed of a plurality of extending assemblies. The photovoltaic support installation tool comprises a plurality of sets of guide assemblies composed of a plurality of guide pipes, the guide assemblies are distributed on the extension assembly and the deck, and supporting legs are further arranged at the centers of the guide pipes. The stacking tool is composed of a plurality of stacking assemblies, each stacking assembly is composed of a plurality of stacking supports, the top sides of the stacking supports are provided with support guide pipes and support supporting legs which are the same as and correspond to the guide pipes and the supporting legs respectively, and the bottom sides of the stacking supports are connected with the guide assemblies. The tool is simple in structural design and convenient to assemble, disassemble and operate, stacking arrangement and fixation of the offshore photovoltaic support in the height direction of the barge can be achieved, the transportation efficiency is improved in the lightering operation, and the cost is reduced.

The invention discloses a preparation device and method for spiral auxetic fibers with a stable initial structure, and belongs to the technical field of building fiber preparation. Comprising a core fiber feeding control mechanism, a wrapping fiber feeding control mechanism, a spiral auxetic fiber forming and winding mechanism and a fiber cutting mechanism which are sequentially arranged, and a glue dripping mechanism is arranged above one end of the fiber cutting mechanism; the core fiber feeding control mechanism comprises a core fiber pipe, a fiber feeding roller, a tension disc and a fiber guiding pipe, the core fiber pipe is placed on the fiber feeding roller, the fiber guiding pipe is arranged above the tension disc, the end of core fiber on the core fiber pipe is wound on the tension disc, and the tension disc is arranged above the core fiber pipe. The wrapping fiber is vertically fed into the wrapping fiber feeding control mechanism from the bottom of the fiber guide pipe; according to the technical scheme, the spiral auxetic fiber which is uniform and stable in initial structure and obvious in negative Poisson's ratio effect is prepared in a physical consolidation and chemical gluing mode, and then the spiral auxetic fiber is cut into the short spiral auxetic fiber sections, so that the short spiral auxetic fiber sections can be conveniently applied to concrete.

The invention relates to the technical field of fractured stratum reinforcement, in particular to a fractured stratum rapid isolating and reinforcing device and method based on deep drilling lining repair. The device comprises drilling equipment, a double-film lining structure, an electric inflator pump, an ultraviolet curing piece and a controller. The double-membrane lining structure comprises an outer hose and an inner membrane tube; the outer hose is made of glass fiber reinforced thermoplastic plastics, the inner film pipe is arranged outside the drill rod in a sleeving mode, and the two ends of the inner film pipe are fixed to the drill rod in a sealed mode. The length of the outer hose is smaller than that of the inner film in the pipe, the outer hose adheres to the middle end of the inner film pipe through hot melt adhesive, an air guide opening is formed in the end, away from the drill bit, of the inner film pipe, and the inflator pump is communicated with the air guide opening through an air guide pipe. And the ultraviolet curing piece is arranged on the outer wall of the drill rod in the inner membrane tube. According to the device, the outer hose is tightly attached to the hole wall, then ultraviolet rays can be evenly irradiated to the outer hose through the ultraviolet emitter, rapid and complete curing of the outer hose is achieved, and the efficiency and safety of drilling operation are improved.

The utility model discloses a screw type sealing mechanism for powder feeding and a powder brewing machine, the sealing mechanism comprises a machine body and a powder box assembly, the powder box assembly comprises a powder storage box and a guide pipe, and the guide pipe is respectively provided with a powder inlet and a powder outlet; a powder outlet screw rod is arranged in the guide pipe, and the powder outlet screw rod rotates and extrudes powder out of the powder outlet; the sealing bottom cover is arranged at the bottom of the guide pipe; a powder falling opening communicated with the powder outlet and a sealing piece are arranged on the sealing bottom cover; the sealing bottom cover is further provided with a first transmission piece. In addition, the sealing device further comprises a first driving device and a second driving device, the output end of the first driving device is in transmission with the first transmission piece, and the output end of the second driving device is in transmission with the sealing piece. Therefore, the lower plane type sealing is adopted, so that the opening angle between the powder outlet and the powder falling opening is 180 degrees, and powder falling is smoother; in addition, the second driving device is independently arranged to drive the sealing piece to rotate, and the overall structure of the powder box assembly is simplified.

The invention discloses an ultralow-temperature cascade cold storage device, which belongs to the field of energy utilization and energy storage and comprises a cold quantity inlet, a porous structure, a cold flow spiral guide pipe, a first-stage cold storage structure, a partition plate I, a second-stage cold storage structure, a partition plate II, a third-stage cold storage structure, a shell, a cold quantity outlet, a hot flow inlet, a hot flow spiral guide pipe and a hot flow outlet. Through the phase change cold storage and sensible heat cold storage coupled composite energy storage system, redundant cold energy generated by gasification of liquefied natural gas in the daytime is stored in different cold storage media in a graded mode according to the temperature gradient, and cold storage and release are achieved through the refrigerant circulation system; when the gasification amount of the liquefied natural gas at night is reduced to cause insufficient cold energy supply, the cold storage device can accurately release low-temperature cold energy (-162 DEG C to-50 DEG C) and medium-temperature cold energy (-50 DEG C to 0 DEG C) stored in the cold storage device as required according to the real-time requirement of cold utilization equipment, and it is ensured that the cold energy utilization equipment can obtain stable cold energy supply under all-weather working conditions.

The present invention provides a feed dispensing and distributing apparatus (1) which distributes one portion at the time evenly over an aquaculture cage using a rotationally connected distributing unit, said apparatus comprising a feed portion container (2), a portion dispenser (3), a feed guiding tube (5), a weighing device (4) adapted to determine the weight of feed that has not been released from the feed portion container (2) and the feed guiding tube (5), a rotational feed distributer (6) comprising a rotating disc portion (11), radial blades (12), and a rotary actuator (7) for driving the rotational feed distributer, and a computing device (8), wherein the computing device (8) regulates the speed of the rotational feed distributer (6) during the distribution of a portion of feed in relation to the weight of the feed that has not been released onto the rotational feed distributer (6). A method for dispensing and distribution feed over an aquaculture cage comprises releasing feed from the feed portion dispenser (2) into the portion guiding structure (10), releasing the feed onto the rotational feed distributer (6), determining the weight of the not-released feed, and regulating the speed of the rotational feed distributer (6) in relation to the weight of the feed.

The utility model relates to the field of engineering construction, and discloses a multistage screening device for engineering construction, which comprises a base, the top end of the base is fixedly connected with a supporting plate, the inner wall of the bottom end of the supporting plate is elastically connected with a movable block through a reset spring, and the inner wall of the supporting plate is fixedly connected with a guide pipe. A sand screening barrel is fixedly connected to the right end of the movable block, an L-shaped frame is fixedly connected to the top end of the supporting plate, a connecting plate is fixedly connected to the top end of the base, a driving mechanism is arranged at the top end of the base, a contact plate is fixedly connected to the outer wall of the driving mechanism, and a movable pipe is arranged on the outer wall of the upper end of the driving mechanism through a transmission mechanism. According to the sand screening device, the rotating shaft drives the contact plate to rotate, the sand screening barrel vertically generates vibration to impact sticky sand, and the movable pipe continuously rotates to scatter the sticky sand, so that the whole sand separation effect is further improved, and the situation that the subsequent sticky sand influences the screening effect is reduced.

The utility model provides an emulsified asphalt heating device which comprises an air heater, a tank body and a heating unit, the air heater introduces hot air into an air inlet pipe, and heat is uniformly transferred to emulsified asphalt through a coil pipe. A stirring assembly in the device is composed of a sleeve, a plurality of stirrers, arc-shaped fan blades, a guide cylinder and the like, and the stirrers are driven to rotate under the action of airflow, so that emulsified asphalt is effectively stirred, and layering is avoided. By optimizing the structural design of the coil pipe and the airflow channel, hot air can be uniformly distributed, the heating process of emulsified asphalt is accelerated, and meanwhile, the heating efficiency is improved. Due to the design of the stirring assembly, the emulsified asphalt is always kept uniform in the heating process, and the defects of non-uniform heating and insufficient stirring possibly occurring in a traditional heating device are overcome. In addition, the device can reduce energy waste and achieve an energy-saving effect by accurately controlling the gas flow and the stirring force. The device has the advantages of reasonable structure, simplicity and convenience in operation and good heating and stirring effects.

A single spindle of the automatic winder comprises a tube replacing device, the yarn guiding device and an equipment air supply system, the yarn guiding device comprises a positioning support, an air tube, a yarn guiding tube body, a blowing nozzle and a tube sleeve, a yarn passing inner hole is vertically formed in the middle of the yarn guiding tube body, and a yarn guiding tube opening at the lower end of the yarn passing inner hole is provided with the tube sleeve. A blowing nozzle on an air pipe connected with an equipment air supply system is communicated with a yarn passing inner hole of the doffing pipe main body, and the doffing pipe is characterized in that a ventilation main hole which is arranged on the doffing pipe main body and is parallel to the yarn passing inner hole is communicated with the blowing nozzle, and the ventilation main hole is communicated with the yarn passing inner hole through at least two blowing holes which blow air towards the inclined upper part. And the outer wall of the doffing tube main body is provided with a process processing hole which is communicated with the blowing hole and is closed by a plug, yarns can effectively and reliably pass through the slender channel so as to complete each blowing yarn leading action, the structural design is reasonable, and the processing and manufacturing difficulty and the rejection rate of parts can be obviously reduced.