454 results about "Funnel shape" patented technology

A grout tube system for precast wall panel installation is disclosed, comprising a tubular section, a flared base at one end, and an inlet section at the other. The grout tube is cast into the wall panel to guide starter bars from a floor slab into the tube during installation. The flared base defines a funnel-shaped opening to accommodate misalignment, enhancing safety and installation efficiency. Grout is injected via the inlet section to encapsulate the starter bars, securing the panel to the slab. The funnel may have an elongate cross-section, and the inlet rim lies flush with formwork to prevent concrete ingress.

The utility model relates to a powder storage bin, and aims to provide a powder anti-blocking discharging device which enables powder to be smoothly discharged from a hopper to a discharging port so as to solve the problem of material blocking of a large powder storage bin and guarantee normal production. According to the technical scheme, the powder anti-blocking discharging device comprises an air cannon and a plurality of vibrators; characterized in that; the powder anti-blocking discharging device further comprises a hopper-shaped vibration hopper installed at the bottom of the powder storage bin, the air cannon and the vibrators are all installed outside the vibration hopper, and a muzzle of the air cannon further sequentially penetrates through the vibration hopper and the wall of the powder storage bin to extend into the powder storage bin in an overhanging mode so as to be used for eliminating the blocking phenomenon of the powder storage bin.

The invention discloses a funnel-shaped pond precise feeding closed-loop control method based on multi-view vision, particularly relates to the technical field of aquaculture intelligent feeding control, and aims to solve the problem that when multi-view perception and water quality monitoring of a pond culture site fluctuate, are missing or are inconsistent, the multi-view perception and the water quality monitoring are not consistent. The problems that the caliber is easy to drift, the feeding decision is insufficient in reliability and difficult to reproduce and trace are solved. Collection results of a multi-view imaging unit and a water quality monitoring unit are aligned according to a period identifier in a unified control period, consistency checking is performed on detection results of all view angles to generate a fish school space occupation graph and identify credible marks, and when the identified credible marks do not meet conditions, the mode is switched to a delivery limiting mode or a delivery stopping mode. Therefore, under the abnormal conditions of communication fluctuation, shielding, brightness abrupt change and the like, a partition feeding decision can be stably output through a traceable and reproducible judgment caliber, and the risks of single-view misjudgment or over-feeding, missing feeding and repeated feeding driven by abnormal data are avoided.

The utility model discloses a special device for installing a buckle of an automobile real wood interior trim part, and particularly relates to a manipulator which comprises a mechanical arm and a vibration disc, and further comprises a buckle execution tool assembled on the mechanical arm, the buckle execution tool comprises bearing pieces distributed in a circumferential array mode, the bearing pieces are divided into horizontal parts, inclined parts and vertical parts according to the structure, and the horizontal parts, the inclined parts and the vertical parts are arranged on the vibration disc. A hinge part is arranged at the joint of the inclined part and the vertical part; in the material receiving station, the vertical parts are switched from the vertical state to the inclined state, and the two vertical parts are distributed in a funnel shape. And at the pressing station, the vertical part is in a vertical state, and the horizontal parts of the two bearing pieces are in a horizontal state. The device is simple in structure, convenient and fast to operate and capable of improving production efficiency.

The utility model relates to the technical field of millet processing, and provides a milling device for millet processing and production, which comprises a tank body, a first grinding disc is rotatably arranged at the upper part in the tank body, the first grinding disc is in a circular truncated cone shape, and one end with smaller diameter is positioned at the lower end; the first grinding disc sleeves the periphery of the lower side of the first grinding disc; the smaller-diameter end of the second grinding disc is fixedly arranged at the lower end of the first grinding disc; the second grinding disc is arranged in the tank body and sleeves the periphery of the upper side of the second grinding disc, and the second grinding disc is communicated with the first grinding disc; the third grinding disc is arranged at the lower end of the second grinding disc; a discharging pipe is arranged in the middle of the lower end of the third grinding disc; the filter screen is funnel-shaped and is positioned below the second millstone, and millet residues on the filter screen slide into the third millstone from the filter screen. By means of the technical scheme, the problems that according to an existing powder grinding device, regrinding treatment on raw materials which are not fully ground is tedious, and the grinding efficiency is low are solved.

The utility model relates to the technical field of raw coal storage, in particular to a wall-adhesion-free coal blending anti-blocking partition bin which comprises a bin body, an anti-blocking mechanism and a partition plate, the lower end of the bin body is in a funnel shape, the partition plate is connected with the bin body in a sliding mode and located in the bin body, and the anti-blocking mechanism comprises a rotating block, a connecting frame, four rotating rollers and a driving assembly. The rotating block is rotationally connected with the partition plate, the cross section of the rotating block located below the partition plate is in a T shape, the connecting frame is fixedly connected with the rotating block, the connecting frame is in a cross shape, the four rotating rollers are fixedly connected with the connecting frame, the driving assembly is arranged below the connecting frame, and two openings are formed in the lower end of the partition plate; through the arrangement of the structure, the problems that in the prior art, a raw coal bunker separately stores different coal briquettes through a partition plate, and during coal blending, the coal briquettes fall down and are prone to blocking the lower end of the raw coal bunker are solved.

The utility model discloses a hoisting type hot waste gas collecting device, which comprises a rack, the gas collecting hood is connected with the rack, a connecting cylinder is arranged in the gas collecting hood, a plurality of gas holes are formed in the peripheral side of the connecting cylinder, an inverted-funnel-shaped water collecting plate is arranged at the bottom of the connecting cylinder, an annular water collecting groove is formed in the bottom of the gas collecting hood, the edge of the water collecting plate is located above the water collecting groove, and a water outlet pipe is connected to the outer side of the gas collecting hood; the water outlet pipe communicates with the water collecting tank; the collecting assembly comprises a collecting pipe, an exhaust fan and a collecting tank, and one end of the collecting pipe communicates with the connecting cylinder; by arranging the water collecting plate and the water collecting tank, when waste gas contains water vapor, the water vapor is gathered at the bottom of the water collecting plate, the gathered water vapor is condensed into water drops, the water drops drip into the water collecting tank along the water collecting plate, and water in the water collecting tank is discharged through the water outlet pipe, so that the water drops formed at the bottom of the gas collecting hood can be prevented from dripping downwards; and water drops are prevented from influencing work below the device.

The invention relates to a pipe for smoking tobacco. To achieve a compact and functional pipe with good cooling effect and cost-effective manufacturing, the pipe comprises a pipe stem (2) (a pipe tube), a pipe bowl (3), and a pipe bowl insert (4) detachably inserted into the pipe bowl (3), the pipe bowl insert having a shaft (5) connecting a bottom section (6) to an upper end section (7) of the pipe bowl insert (4). Within the pipe bowl (3) is a receiving area for smoking material forming a combustion chamber (8) and a smoke chamber (9). The receiving area (8) is formed by a funnel-shaped side wall of the pipe bowl (3) and the upper end section (6) of the pipe bowl insert (4). The smoke chamber (9) is bounded above by the upper end section (7) and below by the bottom section (6) of the pipe bowl insert (4). The pipe stem (2) is detachably attached to the pipe bowl (3) and is fluidically connected to it. stands,wherein the pipe stem (2) comprises a mouthpiece (10), a smoke cooling section (11) with extended air passage and at least part of a filter holder (12).

The utility model belongs to the technical field of grinding machines, and particularly relates to a high-temperature-resistant and low-temperature-resistant lubricating grease additive grinding device. Comprising a supporting rod, the upper end of the supporting rod is fixedly connected with a shell, the bottom of the shell is in a funnel shape, the bottom of the shell is provided with a discharging port, the left side of the shell is provided with a feeding port, the left side of the shell is symmetrically and fixedly connected with supporting plates located on the two sides of the feeding port, and a feeding assembly is slidably connected between the two supporting plates; a fixing plate fixedly connected to the inner wall of the shell is arranged below the feeding port, a through hole is formed in the upper surface of the right side of the fixing plate, and a grinding assembly fixedly installed on the shell is arranged below the fixing plate. The feeding assembly is arranged on the left side of the shell, the feeding amount can be controlled during feeding each time, blocking of raw materials during grinding is reduced, the raw materials can be ground for the second time by arranging the extrusion assembly and the grinding assembly, and the grinding effect of the raw materials is improved.

The vertical rotary table comprises a machining table, a supporting frame is welded to the top end of the machining table, a grinding sliding groove is formed in the top end of the supporting frame, a sliding block is slidably embedded into the inner side of the grinding sliding groove, and two bending pipes are connected to the bottom end of the grinding sliding groove; according to the scheme, the supporting rotary disc with a funnel-shaped groove is used as a support, the clamping mechanism is installed at the top end of the supporting rotary disc to clamp a workpiece, the adjustable characteristic of the grinding mechanism is utilized, the grinding mechanism is used for grinding the workpiece, and the grinding mechanism is used for grinding the workpiece. The water pipe is connected with the grinding mechanism, so that the water pipe can generate an adjustable function, dust generated in the grinding process is washed down through water, the attachment degree of the dust on the inner wall of a workpiece is reduced, the efficient dust removal function of the surface of the workpiece is achieved, and compared with the prior art, the dust removal effect is more thorough.

The utility model discloses a coin-operated spiral rolling game device which comprises a base and an operation assembly, a recovery cavity is arranged in the base, the operation assembly comprises a spiral rolling piece arranged at an installation opening of the base, the spiral rolling piece is of a funnel-shaped structure, and the inner wall of the spiral rolling piece is subjected to smooth treatment to form a rolling arc face. The lower end of the spiral rolling piece is provided with a recycling opening communicating with the recycling cavity. At least one coin inserting frame is further arranged on the circumference of the upper end of the spiral rolling piece, and an arc-shaped coin inserting channel which is arranged from top to bottom is arranged on the inner side face, close to the circle of the spiral rolling piece, of the coin inserting frame. After rolling out, the accelerated coin body rolls in a manner of being attached to the rolling arc surface of the inner wall of the spiral rolling piece, and after spirally falling, the coin body can finally fall into the recycling cavity in the base from the recycling opening to be recycled, so that higher entertainment interestingness is achieved.

The utility model discloses a sealing device of a reaction kettle, which comprises a reaction kettle body, the top of the reaction kettle body is fixedly connected with a truncated cone-shaped second connecting pipe for feeding, the top end of the second connecting pipe is fixedly connected with a funnel-shaped first connecting pipe, and the second connecting pipe is internally and fixedly connected with a support frame; the top of the supporting frame is fixedly connected with a spring, the top end of the spring is fixedly connected with a conical block for sealing a pipe opening of the second connecting pipe, the edge of the conical block is fixedly connected with a sealing gasket, the top of the supporting frame is provided with a telescopic component enabling the conical block to vertically move, and the top of the first connecting pipe is provided with a cover plate. A threaded groove is formed in the bottom of the cover plate. According to the reaction kettle, harmful gas in the reaction kettle cannot be dispersed out of the reaction kettle during feeding, the feeding sealing performance of the reaction kettle is improved, the sealing performance of the feeding pipe can be ensured, and the sealing effect of the reaction kettle is further improved.

The present invention discloses a plane wave tube and a design method for surface pulsating pressure measurement calibration. The plane wave tube includes a loudspeaker and a sound tube connected to the loudspeaker; the sound tube includes a continuously variable cross-section inner tube in a funnel shape, the large end of the continuously variable cross-section inner tube is connected to the sound-emitting end of the loudspeaker, and the small end is connected to an equal cross-section inner tube; along the axial direction of the inner wall of the equal cross-section inner tube, there are provided no less than two Helmholtz resonators; an equal cross-section branch pipe is installed between the outer tube and the equal cross-section inner tube, one end of the equal cross-section branch pipe leads to the inside of the equal cross-section inner tube, and the other end extends to the outer tube; and a microphone interface for connecting to a microphone is installed at the end of the equal cross-section branch pipe extending to the outer tube. The present invention can calibrate a surface pulsating pressure measurement system, making the measurement of the surface pulsating pressure by the measurement system more stable and accurate, and reducing measurement errors.

The utility model provides a direct exhaust air duct structure in an integrated cooker, and belongs to the technical field of integrated cookers. A direct exhaust air duct structure in an integrated cooker is characterized by comprising an air bellow, the air bellow is integrally formed by a metal plate, a negative pressure cavity and a smoke collecting cavity are formed in the air bellow, an air outlet is formed in the side lower portion of the smoke collecting cavity, a fan system is arranged in the smoke collecting cavity, a smoke collecting cavity upper cover is obliquely arranged at the upper end of the smoke collecting cavity, and the bottom of the smoke collecting cavity is in a funnel shape. A waste oil hole is formed in the lower end of the smoke collecting cavity. The upper cover of the smoke collecting cavity is designed to be inclined, embedded and sunken, so that waste oil can be conveniently collected, and risks such as oil seepage and oil leakage are prevented; the whole air bellow adopts an integral forming process, so that the metal plate strength is improved, the noise of the whole air bellow can be reduced, and metal plate resonance is prevented.

The present invention relates to a wall section (WS) of a hot gas path part (HP) for a gas turbine, which wall section (WS) is additively manufactured by (AM) a powder based manufacturing process, comprising a first surface (FS) and at least one first channel (FC) to supply a coolant to a number of second channels (SC), which at respective junctions (JS) are branching off from the at least one first channel (FC) and which are designated to cool the wall section (WS) during operation. To provide a wall section of an additively manufactured part, which is easier to de-powder, at least one of the second channels (SC), preferably all second channels (SC), comprises a shaped sub-section (SN) which merges into the at least one first channel (FD), the sub-section (SN) is funnel-shaped or comprises a continuously diverging cross section towards the first channel (FC).

The utility model provides a feeding disc for steel ball production and machining, and relates to the technical field of steel ball production and machining, the feeding disc comprises a discharging disc, the discharging disc is of a funnel-shaped structure, the inner wall of the discharging disc is provided with a feeding assembly, the feeding assembly comprises a conveying belt, and the outer surface of the conveying belt is provided with multiple sets of feeding plates; the multiple sets of feeding plates are installed on the surface of the outer end of the conveying belt at equal intervals, a guide groove is formed in the top end of the conveying belt, the guide groove is obliquely installed, a sliding groove is formed in the inner wall of the discharging disc, and the conveying belt slides in the middle of the inner side of the sliding groove. According to the steel ball feeding device, the discharging disc is arranged to be of the funnel-shaped structure, then the feeding plates are driven by the conveying belt to ascend one by one, and therefore steel balls in the discharging disc are stably conveyed one by one, and the uniformity of the feeding speed of the steel balls is effectively improved; and meanwhile, the situation that in the background technology, residual steel balls fall into the discharging disc and cannot be conveyed and fed is effectively avoided.

The utility model discloses a stainless steel pipe fitting heat treatment device, which relates to the technical field of steel pipe treatment, and comprises a placing plate, a spray head, a driving mechanism, a connecting pipe, a supporting block, an auxiliary rod, a bottom plate, a driving rod and a holding block, the outer side of the driving rod is also connected with a mounting block, the inside of the mounting block is connected with a reset spring, and the outer side of the reset spring is connected with a top plate. A torsional spring is connected to the outer side of the top plate, a movable block is connected to the inner side of the torsional spring, an anti-disengaging block is connected to the outer side of the movable block, and elastic blocks are arranged on the periphery of the movable block. The elastic block and the movable block are arranged on the periphery of the mounting block, the elastic block is of a funnel-shaped structure, a pipe fitting is inserted into the mounting block in the using process, so that the movable block is located in the pipe fitting, meanwhile, the elastic block and the movable block are isolated through the pipe fitting, the movable block is supported towards the outer side under the driving of the torsion spring, and therefore the pipe fitting is prevented from being damaged. And the movable block and the anti-falling block are located in the pipe fitting, and the pipe fitting is fixed and limited.

The accumulated water draining structure comprises a funnel-shaped water outlet surface cover and an inner frame plate, the inner frame plate is fixedly connected to the top of the water outlet surface cover, and a gap exists between the bottom surface of the inner frame plate and the top surface of the water outlet surface cover; the center of the water outlet surface cover is sunken to form a first groove, and the edge of the first groove is in smooth transition to the center; the center of the first groove continuously sinks downwards to form a water passing cavity, a plurality of flow guide grooves are formed in the first groove, and water inlets of the flow guide grooves are located in the water passing cavity; a plurality of flow guide grooves are formed in the water outlet surface cover and matched with the water passing cavity, accumulated water is rapidly and directionally drained, residues are reduced, the design of the horizontal flow grooves and the through holes assists in water flow dispersion, and the overall drainage efficiency is improved; moreover, the center of the first groove continuously sinks downwards to form the water passing cavity, accumulated water can be rapidly collected through the water passing cavity, the drainage speed is high, and flow can be stopped when water is turned off.

Disclosed in the present invention is a slope protection brick for restoring a vegetation buffer zone, which relates to the technical field of slope protection devices. The slope protection brick includes a regular hexagonal brick main body, and an interior of the brick main body employs a hollow structure. Each side wall of the brick main body is provided with a water input hole, a top and a bottom of the brick main body are provided with funnel-shaped drain hoppers, and a side wall of each drain hopper is made of a water permeable material. A sealing block is arranged in each drain hopper in an abutted manner, the sealing block and the brick main body are jointly provided with a plurality of inverted trapezoidal grooves which are in mutual communication, and a limiting block is clamped in each inverted trapezoidal groove.

A pressure sensor device for internal pressure monitoring in a hose, preferably an infusion hose, that is used for fluid transmission and that rests directly or indirectly on a pressure sensor housing. The hose is elastically deformable and connected via a contact side to a pressure transmission element located in the pressure sensor housing. The pressure transmission element transmits internal pressure changes absorbed via the contact side to a compressive force sensor for measurement. The contact side can have an elliptical shape, and the pressure transmission element can have a funnel-shaped extension, to make the pressure sensor device as robust as possible in terms of measurement accuracy, and independent of fluctuations in temperature and associated changes in material states.

The utility model discloses a rubber ball cleaning device used for condenser cleaning, and relates to the technical field of rubber ball cleaning, the rubber ball cleaning device comprises a water chamber, a ball collecting assembly comprises a collecting net, the collecting net is arranged in a ball collector, a guide frame is fixedly connected in the ball collector, the guide frame and the collecting net are arranged in an attached mode, and the water chamber is arranged in the water chamber. The collecting net is arranged in a funnel shape, one side of the collecting net is fixedly communicated with a ball discharging pipe, a fixing frame is fixedly connected in the ball collector, one side of the fixing frame is fixedly connected with a flow guide seat, and one side of the flow guide seat is fixedly connected with a flow guide ball. Rubber balls are collected through a collecting net and discharged out of a ball discharging pipe, a guide frame is arranged to protect the collecting net and the inner wall of a ball collector, the pressure of the collecting net and the inner wall of the ball collector is reduced, and the situation that the rubber ball recovery amount is reduced due to the fact that the inner wall of the collecting net and the inner wall of the ball collector are enlarged is avoided; and overlarge impulsive force caused by direct contact between the rubber balls and the collecting net is avoided.

The invention belongs to the field of plant spore collection, and provides a plant spore collecting device which comprises a mounting shell, a protective shell arranged on the upper side of the mounting shell, a connecting pipe fixedly communicated with the upper side of the protective shell, a siphon fixedly communicated with the upper end of the connecting pipe, a funnel-shaped mounting shell and a supporting ring arranged in the mounting shell. Placing boxes are placed in the supporting rings, through holes are formed in the lower surface of the mounting shell, and the three supporting rings are evenly distributed in the mounting shell; by arranging a combined structure of the funnel-shaped mounting shell and the protective shell and cooperating with the design of a siphon and a drainage block, air flow in the device is effectively promoted, drying and breaking of sporangiums are accelerated, and therefore the spore collecting efficiency is improved, a gap can be reserved between the containing box and the inner wall of the mounting shell through an arranged supporting ring, and the sporangiums are prevented from being damaged. And meanwhile, spores and the like can be placed in the placement box, so that the possibility of pollution to the interior of the mounting shell is reduced.

The utility model relates to a drill bit cooling device which comprises a workbench, a lifting device fixedly arranged on the workbench and an electric drill body fixedly arranged on the lifting device. The device comprises a workbench, vertical plates symmetrically and fixedly arranged on the top face of the workbench, a containing cavity formed between the vertical plates through a sliding plate, a funnel-shaped lower shielding cover arranged in the containing cavity in a sliding mode, a water passing pipe fixedly arranged on the inner side wall of the containing cavity in a surrounding mode, and nozzles arranged on the water passing pipe at intervals. The water passing pipe is communicated with the water storage container through a communicating pipe penetrating to the outer side of the containing cavity. According to the utility model, through the combination of the water passing pipe and the spray head, the cooling liquid can be directly and uniformly sprayed on the working area of the drill bit, so that the temperature of the drill bit is effectively reduced, the service life of the drill bit is prolonged, and meanwhile, the punching efficiency and precision are improved.

The present invention discloses an atmospheric precipitation collection device for geological survey, comprising: a liquid storage tank; a receiving assembly, which comprises a folding frame and a tough waterproof cloth arranged on the folding frame, the folding frame is unfolded to make the tough waterproof cloth unfold in a funnel shape, and the liquid storage tank is installed on the receiving assembly and communicated with the discharge port of the tough waterproof cloth. The atmospheric precipitation collection device for geological survey provided by the invention makes the tough waterproof cloth in a funnel shape by unfolding the folding frame, and the liquid storage tank is fixed by the receiving assembly and is located below the discharge port of the tough waterproof cloth, and the rainwater received by the tough waterproof cloth will be drained into the liquid storage tank, thereby ensuring the collection effect of the liquid storage tank on the accumulated water and improving the accuracy of the detection data.

This utility model discloses an epoxy resin injection container, including a storage tank, a support frame, a lifting mechanism, an auxiliary evacuation mechanism, a vibrating discharge mechanism, and a delivery pump. The bottom of the storage tank is funnel-shaped and made of transparent material. A suction pipe connected to the bottom of the storage tank is installed at the inlet of the delivery pump, and an output pipe is connected to the outlet of the delivery pump. The support frame is fixed to the storage tank. The lifting mechanism is installed on the support frame and is used to drive the auxiliary evacuation mechanism to move up and down. The vibrating discharge mechanism is fixedly installed on the outside of the storage tank. This utility model, through ultrasonic vibration and a rotatable and liftable high-pressure air blowing mechanism, can thoroughly remove epoxy resin adhering to the inner wall of the tank, significantly improving the thoroughness of discharge and reducing residual waste.

The utility model relates to the technical field of nut preparation, in particular to a nut pickling device which comprises a pickling box body, a first feeding hopper is arranged at the top of the pickling box body, and a material bearing box is rotatably arranged in the pickling box body; a second feeding hopper is arranged at the top of the material bearing box, a first rotating shaft is arranged on the left side of the material bearing box, a second rotating shaft is arranged on the right side of the material bearing box, and the first rotating shaft and the second rotating shaft are rotationally arranged in a first limiting sleeve and a second limiting sleeve respectively; a plurality of through holes are formed in the material bearing box, and the top of the material bearing box is in a funnel shape. The nut pickling device disclosed by the utility model has a good pickling cleaning effect and can be used for cleaning residual acid liquor on a nut after pickling.

The application relates to the technical field of ecological environment engineering, and discloses a modular rain flood resource deep purification and underground storage integrated device, which comprises a radial shear purification module, a hydraulic closed locking assembly and a spiral push flow storage module which are coaxially and communicatively arranged from top to bottom; the radial shear purification module comprises a first shell, a composite filter material layer filled in the first shell, an inverted funnel-shaped flow guide cover arranged above the composite filter material layer and a central siphon assembly, a horizontal annular flow channel is formed between the lower edge of the inverted funnel-shaped flow guide cover and the upper surface of the composite filter material layer; the spiral push flow storage module comprises a second shell and a spiral flow guide plate arranged in the second shell. Through cooperation of the inverted funnel-shaped flow guide cover and the central siphon assembly, vertical gravity flow during cleaning is converted into horizontal radial converging flow along the filter material surface, the integrity of a biofilm structure is maintained, and long-term stable operation of the filter layer can be realized without external power.

The utility model relates to a rod and wire flying shear outlet guide groove, and belongs to the technical field of rod and wire production equipment in the metallurgical industry. According to the technical scheme, the guide groove structure comprises a guide groove inlet (1), a hollow steel passing groove (2), a long-strip-shaped hole (3), a guide plate (4) and a support (5), the hollow steel passing groove (2) is arranged between the flying shear and the rolling mill and fixed to the support (5), the section of the hollow steel passing groove (2) is rectangular, the guide groove inlet (1) is formed in the end, close to the flying shear, of the hollow steel passing groove (2), and the guide groove inlet (1) is in a big-to-small funnel shape. A long-strip-shaped hole (3) is formed in the bottom of the hollow steel passing groove (2) in the length direction of the hollow steel passing groove (2), and a guide plate (4) which is obliquely arranged downwards is arranged on the long-strip-shaped hole (3). The steel scrap head guiding device has the advantages that steel scrap heads entering the guiding groove can be guided to the position below the guiding groove, and steel piling accidents caused by the fact that the steel scrap heads enter a downstream rolling mill are avoided.

The utility model relates to the technical field of air compressors, in particular to a waterproof air compressor which comprises a waterproof shell, an air outlet pipe, an air collecting cover, a partition plate and an air compressor shell, the upper portion of the left portion of the waterproof shell is communicated with the air outlet pipe, the funnel-shaped air collecting cover is fixed to the middle of the front portion of the waterproof shell, and an air inlet of the air collecting cover faces forwards and is located in the center. Partition plates are arranged on all the inner wall faces of the waterproof shell, all the partition plates form a closed cavity, the partition plate on the left portion is communicated with the air outlet pipe, the partition plate on the front portion is communicated with the air collecting cover, an air compressor shell is installed in the closed cavity, and the rear portion of the air compressor shell is designed to be in a cross-shaped hollowed-out mode. According to the utility model, the waterproof housing is combined with the separator plate, so that internal parts are not affected by external moisture intrusion; through the combined design of the heat dissipation fins and the embedded electric fan, heat generated by the first motor is effectively conducted and dissipated out, and faults caused by overheating are avoided; the air compressor shell designed in a cross-shaped hollow-out mode is beneficial for evenly distributing pressure, and the air compression effect is improved.

The present application relates to sample supernatant transfer equipment technical field, and disclose a built-in filter element pollution prevention device for biological sample processing, including the platform, the top of the platform is fixedly connected with first connecting frame, the top of first connecting frame is fixedly connected with auxiliary assembly, the top of auxiliary assembly is fixedly connected with second connecting frame, the surface of one end of auxiliary assembly is slidably connected with sliding cover, the surface of the other end of auxiliary assembly is fixedly connected with control center. The both sides of the top of auxiliary assembly are fixedly connected with fixture, the inside of auxiliary assembly is provided with pasteur pipette, the rear end surface of auxiliary assembly is fixedly connected with vertical table, the top of pasteur pipette is provided with funnel shape, the bottom of pasteur pipette is provided with conical shape, the inside of the middle part of pasteur pipette is provided with filter element, the material of filter element is provided with polypropylene, polytetrafluoroethylene and nylon mixed material, the device has the advantages of improving the extraction effect of the device on sample supernatant, convenient for users to use and the like.