53results about How to "Reduce splatter" patented technology

The invention relates to rapid and efficient methods and apparatuses for displacing target plant materials from seeds. In one embodiment, the invention relates to methods and apparatuses for displacing embryos from maize seeds. In yet another embodiment, the displaced embryos can be propagated and regenerated into plants.

The invention discloses a method for preparing titanyl sulfate solution with flotation ilmenite, which is characterized in that material spraying degree can be reduced in mineral acid reaction, and materials can be prevented from spraying outside an acidolysis pot and belongs to the field of chemical engineering. The method includes the following steps: a evenly mixing powder ilmenite and concentrated sulfuric acid; b placing the evenly mixed powder ilmenite and concentrated sulfuric acid in the acidolysis pot, adding triggering liquid to trigger a mineral acid reaction, and adding antifoaming agents in the acidolysis pot when a large amount of bubbles are generated in the acidolysis pot in the mineral acid reaction; c after mixture of the mineral acid reaction is cured, placing leaching liquid in the acidolysis pot for leaching, and then obtaining titanyl sulfate solution after filtering. The method avoids the phenomena that the materials are sprayed out of the acidolysis pot, ensures safety of operation staff in a production process, improves environment sanitation, reduces labor operation intensity, and further promotes popularization and application of the flotation ilmenite in production of titanium white in sulfuric acid.

The invention discloses a split, adjustable and splash-proof range hood with low noise and energy saving. A range hood cover is separated with a draught fan and is connected with the draught fan through a soft air hose and a hard air hose; the draught fan is installed away from a cooking bench or is installed outdoor; a vertical shaft and a horizontal shaft are added; the horizontal shaft can move along the vertical shaft; each of the two ends of the horizontal shaft is provided with a casing which can move left and right and can rotate along the horizontal shaft; connecting plates are arranged at the lateral sides of the casings; a fume hood is fixed on the connecting plates; and in such way, the fume hood can move left and right and up and down or rotate along the horizontal shaft. A screw rod and a motor can also be added to drag the horizontal shaft to move up and down. According to the invention, the split, adjustable and splash-proof range hood with low noise and energy saving has the advantages that influences on physical and mental health of a user caused by noises of the draught fan and the electromagnetic radiation can be avoided; an exhaust opening with the biggest suction of the fume hood can be directly aiming at a frying pan and can be lowered to almost cover the frying pan, so the power of the draught fan can be reduced; the fume hood can also rotate, so splash of hot oil can be prevented; and the cheap fume hood can be made into various shapes with different patterns and is easy to be disassembled for washing and replacing.

The invention discloses large-diameter pipe fitting butt welding equipment, and relates to the technical field of butt welding equipment, and the large-diameter pipe fitting butt welding equipment comprises a composite mechanism. According to the butt welding equipment for the large-diameter pipe fittings, through the design of the composite mechanism, the fixing mechanism is arranged on the square frame base, the square frame base slides on the sliding rail block, so that the effect of adjusting the fixing range is achieved, the fixing mechanism is used for fixing the pipe fittings, follow-up butt welding is facilitated, material stability is kept, and the welding quality is prevented from being affected; the fixing mechanism is driven by the motor to control materials to rotate and be matched with the welding mechanism, so that the effect of constant-speed welding is achieved, manual operation is reduced, welding deviation is avoided, the butt welding efficiency is improved, the buffer mechanism wraps the materials, on one hand, light pollution generated by welding is reduced, on the other hand, welding fire light is avoided, and the welding quality is improved. And meanwhile, due to the damping and buffering effects, objects are prevented from falling off, object abrasion is reduced, and therefore normal operation of equipment is kept.

The invention relates to an asphalt mixture extraction instrument and an asphalt content measurement method. The asphalt mixture extraction instrument comprises a solvent box, a condensation box and a centrifugal extractor, wherein the centrifugal extractor comprises a control box, a conical screening base, a centrifugal cylinder, a spraying cover, a sleeve screen and an extraction filter cylinder. The asphalt mixture extraction instrument further comprises a draining support used for enabling the sleeve screen to be obliquely arranged right above the conical screening base, the draining support and the centrifugal cylinder are oppositely arranged on the two sides of the conical screening base, the draining support comprises a supporting column, a supporting plate and a fixing hook, the supporting column is arranged on the top of the control box, the supporting plate is hinged to the top of the supporting column and used for supporting the side wall of the sleeve screen, the side, which is close to the sleeve screen, of the supporting plate is matched with the outer side of the sleeve screen in radian, and the fixing hook is arranged on the side, which is close to the sleeve screen, of the bottom of the supporting plate and used for placing the sleeve screen. After the sample solution is extracted by the asphalt mixture extraction instrument, the sleeve screen is obliquely arranged right above the conical screening base through the draining support, and the residual mixed solution at the bottom of the sleeve screen is drained, so that the asphalt content measurement precision is improved.

The invention discloses a swinging corner and an application thereof in a tooth surface polishing and bleaching device. The swinging corner converts continuous rotation input into back-and-forth swingoutput through a single handle-driven swing output mechanism to output in a steering manner at a specific obtuse angle. The single handle-driven swing output mechanism can be divided into an inclinedhandle driving type and a bent handle driving type according to the single handle structure function of the single handle-driven swing output mechanism. A main body of the device is a portable bleaching handle, wherein a battery power source and a detachable swinging corner with a dual-functional rubber cup are arranged in the portable bleaching handle. The swinging corner can also be independently used as a tooth cleaning corner of a dental clinic. The device is further provided with a double-agent mixing assembly for separately storing a polishing agent and a bleaching agent, and the polishing agent and the bleaching agent are uniformly mixed by a handle power source before use and then applied to the tooth surface; and in addition, a personalized oral cavity protection support for protecting gums and lips is further arranged, so that bleaching agent infection possibly caused during operation is avoided.

The invention discloses a tundish with a slag-avoiding function under a protective atmosphere and a using method. The tundish comprises a body, an upper cover plate is arranged at the top of the body, a slag-avoiding device is installed at the position of the upper cover plate, a long nozzle is arranged in the slag-avoiding device in a sleeved mode, the bottom end of the slag-avoiding device extends to the position below the slag adding height, and a turbulence suppressor is arranged in the position, under the slag-avoiding device, of the upper surface of a bottom plate of the body. Argon blowing holes are formed in the two ends of the upper cover plate of the tundish, argon is continuously blown to the tundish through the argon blowing holes and the slag-avoiding device, air is completely exhausted, the tundish is kept in a micro-positive-pressure argon environment, and the protective atmosphere is formed; and secondary oxidation of air on molten steel is prevented. Besides, the molten steel can entrain argon in the pouring process, the dead zone volume in the tundish is remarkably reduced, the buoyancy of argon bubbles is beneficial to collision, growth and removal of inclusion particles, the floating bubbles can capture the inclusion particles and carry the inclusion particles to float upwards together, the floating speed of the fine inclusion particles is increased, inclusions in the molten steel are removed, the service life of the tundish is prolonged, the purity of the molten steel is improved, and the casting blank quality is improved.

The invention belongs to the technical field of cooling devices, and particularly relates to a turning-milling composite machine tool cutter cooling device. The device comprises a workbench, a main shaft and a cutter chuck, wherein a cutter is installed at the bottom end of the cutter chuck, a cooling sleeve is installed at the bottom end of the main shaft, a cooling cavity is formed in the cooling sleeve, the bottom end of the cooling sleeve is rotationally connected with a rotating ring, an annular boss and a positioning table are arranged on the upper end face of the rotating ring, an annular groove is formed in the bottom end of the cooling cavity, a through groove penetrating to the top face of the positioning table is formed in the top end of the rotating ring, a through type coolinggroove is formed in the rotating ring at the bottom end of the through groove in the radial direction of the rotating ring, and a spray head is connected to the side wall of the rotating ring corresponding to the end, away from the cutter, of the cooling groove. According to the device, by arranging an internal structure of the cooling device, cooling liquid or cold air can more effectively and efficiently cool all positions of the cutter, the using effect of the machine tool cutter is greatly improved, and the service life of the machine tool cutter is greatly prolonged.

The invention discloses a compressive property detection device for tempered glass production and a detection method, and relates to the technical field of tempered glass production, the compressive property detection device comprises a bottom plate, the middle position of the upper surface of the bottom plate is provided with a bearing table, and the bearing table is used for placing glass; the pressurizing mechanism is mounted on the upper surface of the bottom plate, vertically corresponds to the bearing table and is used for applying pressure to the glass; the electric sliding table mechanism is installed on the upper surface of the bottom plate, and the moving end of the electric sliding table mechanism moves in the length direction of the bottom plate. And the liquid coating mechanism is mounted on one side of the moving end of the electric sliding table mechanism and is used for coating the surface of the glass with a layer of non-Newtonian liquid so as to prevent the glass from being sputtered all around when the glass is broken. According to the invention, the non-Newtonian liquid is coated on the outer side of the glass, and when the glass is broken in a compression resistance test process, the liquid is rapidly converted into a high-viscosity state due to a shear thickening effect to form a temporary barrier to effectively adhere and capture high-speed flying glass fragments, so that the splashing phenomenon of the glass fragments is obviously reduced.

The utility model discloses a polishing device for steel structure manufacturing, belongs to the technical field of steel structure polishing, and aims to solve the problems that in the prior art, two faces of a steel plate are difficult to polish by a polishing roller, the polishing roller is difficult to adjust according to steel plates with different thicknesses, and the polishing range is limited. Limiting sliding grooves are formed in the two sides of the inner wall of the U-shaped workbench. A steel plate is convenient to move through the transmission roller, the steel plate is polished through the first driving motor, the first polishing roller and the second polishing roller, and the effect of adjusting the distance between the first polishing roller and the second polishing roller is achieved through the arrangement of a fixing frame, a threaded rod, an L-shaped mounting block, a limiting sliding groove and other structures; and through arrangement of a protective cover, chippings brought out in the grinding process of the first grinding roller are protected and shielded, splashing of the chippings is reduced, and convenience is brought to follow-up surface cleaning of the U-shaped workbench.

The utility model discloses hydraulic valve cleaning equipment, which belongs to the technical field of hydraulic valve cleaning, aims at solving the problems that the hydraulic valve cleaning effect is poor and the working intensity of workers is easy to increase in the prior art, and comprises a cleaning box, a fixed plate, a hydraulic cylinder, a hydraulic cylinder and a hydraulic cylinder, a track plate is fixed on one side of the fixed plate; according to the hydraulic valve cleaning device, the placing net plate, the walking assembly, the cylindrical brush and the cleaning mechanism are matched with one another, so that the placing net plate drives the hydraulic valve to move into the cleaning box, the hydraulic valve is soaked through cleaning liquid in the cleaning box, stubborn stains on the surface of the hydraulic valve are loosened after the hydraulic valve is soaked, and the cleaning effect is good. And when the placement net plate moves to the position below the cylindrical brush, the cylindrical brush in the rotating process fully cleans the stains on the surface of the hydraulic valve, the cleaning effect of the hydraulic valve is improved, the two hands are released, and the working intensity of workers is relieved.

The invention discloses a convenient-to-position cutting machine for fused quartz plate processing, and relates to the technical field of cutting, and the convenient-to-position cutting machine comprises a composite mechanism. According to the cutting machine convenient to position and used for fused quartz plate machining, through the design of a composite mechanism, a quartz plate is placed on the inner side of the movable fixing assembly, and the quartz plate is fixed through the movable fixing assembly, so that the stability during cutting is kept, and the situation that the cutting effect is affected due to deviation during cutting is avoided; during operation, the movable fixing assembly slides in a groove in the top of the composite base and is in butt joint with the saw blade, the saw blade is controlled by the first motor to rotate, the cutting effect on a quartz plate is achieved, the sliding cross beam slides on the two sides of the composite base, the cutting position is convenient to move and adjust, and the sliding frame body slides on the sliding cross beam; and the saw blade is controlled to ascend and descend through the lifting table, so that the saw blade is conveniently attached to the surface of the quartz plate, different operation requirements are met, and normal operation of equipment is kept.

The invention relates to the technical field of optics and lasers, and discloses a hollow microstructure of an LED. The hollow structure comprises a hollow area and a microstructure area positioned onthe LED, wherein the microstructure area is distributed all over microstructure arrays which surround the hollow area without any microstructure array, and the hollow area is positioned above an LEDlight emitting source and overlaps with the cross section of a total reflection light cone at the height of the microstructure arrays; the invention further discloses a manufacturing method for the hollow microstructure of the LED and an optical path system adopted by the manufacturing method, and the structure can improve the light emitting intensity and the light emitting efficiency of the LED effectively.

The invention discloses a sieve plate anti-blocking vibrating screen, and relates to the technical field of sieve plate anti-blocking, the sieve plate anti-blocking vibrating screen comprises a main body mechanism, the main body mechanism comprises a vibrating frame and a bottom plate, a buffer mechanism for improving buffer protection is arranged between the vibrating frame and the bottom plate, a vibrator is arranged at the bottom of the vibrating frame, and two mounting notches are formed in the top of the vibrating frame; a fixing frame is fixedly arranged on the inner side wall of the vibration frame, inserting holes are formed in the four corners of the fixing frame, lug plates are welded to the outer walls of the two sides of the vibration frame, and a discharging mechanism is detachably arranged above the lug plates through a mounting frame. According to the material distributing device, the material distributing assembly is arranged above the vibration frame, materials are conveyed into the material guiding frame, firstly, a first rotating shaft drives a peripheral material distributing plate to rotate in an upper material guiding groove, so that the materials fall into a lower material guiding groove equivalently, and when the first rotating shaft rotates to drive a driven wheel to rotate through a belt, a second rotating shaft drives a spiral blade to crush the large materials; and through rotation of the spiral blades, the materials are prevented from directly accumulating and falling into the vibration frame to cause blockage, and the material screening process is smooth.

The invention discloses a steel strand cutting method after pre-stress tensioning in a cover beam deep-buried sleeve, relates to a steel strand cutting method, and aims to solve the problems that a steel strand in the cover beam deep-buried sleeve is reserved too long, round points are formed at the end part of a cover beam after anchor sealing, and the appearance quality of the end part of the cover beam is affected by corrosion after long time. The cutting method comprises the following steps that 1, a clamp is connected with an electric hydraulic pump through an oil conveying pipe; 2, a clamp is fixed on the steel strand in the deeply-buried steel sleeve; 3, the electric hydraulic pump is started, and the steel strand is pinched off through the clamp; and 4, the end part of a cover beam is blocked by adopting a steel form, a concrete pouring gap is reserved, micro-expansion fine aggregate concrete is poured into the steel sleeve, and the steel form is removed after the concrete reaches the strength. According to the steel strand cutting method, the hydraulic pump is adopted to control the clamp to pinch off the steel strand in the deep-buried sleeve at the end part of the cover beam, so that the end of the cover beam is better subjected to pre-stress tensioning and then end sealing, and the appearance quality of the end part of the cover beam is ensured.

The utility model relates to the technical field of grain processing, and discloses an agricultural grain oil press which comprises a shell, a mounting plate is fixedly connected to the right side of the top of the shell, a rotating motor is fixedly mounted at the top of the mounting plate, and a U-shaped cover is fixedly connected between a first vertical plate and a second vertical plate. A feeding hopper is detachably connected to the top of the second vertical plate, an oil pressing barrel is fixedly installed between the second vertical plate and the third vertical plate, an oil pressing mechanism is arranged in the oil pressing barrel, an isolation box is fixedly connected to the left side of the third vertical plate, and a residue discharging adjusting mechanism is arranged at the bottom of the isolation box; the oil pressing mechanism is arranged to push oil forwards and apply pressure, so that grease is extracted from the oil automatically and efficiently, oil residues are shielded through the isolation box, splashing of the oil residues is reduced, the size of a residue outlet in the bottom of the isolation box is adjusted under the cooperation of the residue outlet adjusting mechanism, and the discharging speed and amount of the oil residues are controlled; and blockage or unnecessary sputtering is avoided.

The invention discloses a furniture production and processing equipment, comprising a device main body, a table top is fixedly connected to the upper outer surface of the device main body, a material is arranged on the upper outer surface of the table top, and a positioning mechanism is arranged on the outer surface of one end of the material , the upper end of the table is provided with a cutting assembly, and the lower end of the cutting assembly is provided with a protection mechanism, the protection mechanism includes a drill lifting block, a pull rod, a fixing mechanism, a telescopic cover, a lifting rod, a limit groove and a sponge block, the The drill lifting block is located on the outer surface around the cutting assembly, and the fixing mechanism is located on the outer surface of the front end of the telescoping cover. The furniture production and processing equipment described in the present invention can effectively reduce dust splashing, can effectively improve the cleaning effect, can effectively expand and contract, can effectively fix, is convenient for disassembly and cleaning, can effectively fix and limit positions, and improves opening and closing. Material efficiency brings better prospects for use.

The utility model discloses a part conveying device for machining, which comprises a support, a conveying structure is rotatably arranged on the support, a cleaning assembly is arranged above the conveying structure, the cleaning assembly comprises a recovery tank A and a recovery tank B which are fixed below the support, and U-shaped connecting plates are fixedly arranged on the recovery tank A and the recovery tank B respectively. U-shaped connecting plates are fixedly arranged on the conveying belt A, telescopic air cylinders are fixedly arranged on the U-shaped connecting plates, motors are fixedly arranged at the output ends of the telescopic air cylinders, and the output ends of the motors are fixedly connected with polishing frames. And after one face of the part raw material is ground, the part raw material is turned over through a flow guide plate when entering the conveying belt B, and is ground through a grinding disc in a grinding frame on the conveying belt B and a watering plate on a U-shaped connecting plate, and the whole part raw material is ground.

The invention discloses a method for preparing titanyl sulfate solution with flotation ilmenite, which is characterized in that material spraying degree can be reduced in mineral acid reaction, and materials can be prevented from spraying outside an acidolysis pot and belongs to the field of chemical engineering. The method includes the following steps: a evenly mixing powder ilmenite and concentrated sulfuric acid; b placing the evenly mixed powder ilmenite and concentrated sulfuric acid in the acidolysis pot, adding triggering liquid to trigger a mineral acid reaction, and adding antifoaming agents in the acidolysis pot when a large amount of bubbles are generated in the acidolysis pot in the mineral acid reaction; c after mixture of the mineral acid reaction is cured, placing leaching liquid in the acidolysis pot for leaching, and then obtaining titanyl sulfate solution after filtering. The method avoids the phenomena that the materials are sprayed out of the acidolysis pot, ensures safety of operation staff in a production process, improves environment sanitation, reduces labor operation intensity, and further promotes popularization and application of the flotation ilmenite in production of titanium white in sulfuric acid.

The utility model discloses a stationary fixture for ball valve core drilling, which comprises a U-shaped support, a fixing assembly is arranged above the U-shaped support, the fixing assembly comprises a fixing plate A and a fixing plate B which are fixedly arranged on the U-shaped support, the fixing plate A is fixedly connected with a protective frame A through a connecting rod, and the protective frame B is fixedly connected with a connecting rod. And a telescopic air cylinder is fixedly arranged on the fixing plate B, a protection frame B is fixedly arranged at the output end of the telescopic air cylinder, and arc-shaped fixing plates are fixedly connected to the interior of the protection frame A and the interior of the protection frame B through elastic pieces. Chippings generated during punching can be blocked through a protection frame A and a protection frame B, the phenomenon that the chippings generated during punching splash is reduced, meanwhile, air pressure generated by an air pump is conveyed into the protection frame B through an air conveying pipe B, the chippings are conveyed into a dust collection box through a dust collection groove, and the dust collection efficiency is improved. And therefore, the workload during subsequent scrap cleaning is reduced, and the punching efficiency is improved.

The invention provides anti-dazzle LED lamp light guide plate wafer machining and angle lapping integrated equipment. The anti-dazzle LED lamp light guide plate wafer machining and angle lapping integrated equipment comprises a workbench, supporting legs, a transverse moving mechanism, a polishing mechanism and a rotating mechanism, wherein the supporting legs are fixedly installed at four cornersof the bottom of the workbench correspondingly, the supporting legs are fixedly connected through cross rods correspondingly, the transverse moving mechanism is fixedly installed at one end of the top of the workbench, the polishing mechanism is connected to one end of the top of the workbench in a sliding mode, and the bottom end of the polishing mechanism is fixedly connected with the output end of the transverse moving mechanism, the rotating mechanism is fixedly installed in the center of the bottom of the workbench and comprises a rotating motor, a suction cup, a rotating plate, a driving gear, an auxiliary gear, a pneumatic device and a connecting pipe. The anti-dazzle LED lamp light guide plate wafer machining and angle lapping integrated equipment is simple in structure, convenient and fast to operate, capable of stably grinding a wafer, capable of conducting machining according to the radius of the wafer and higher in practicability.

The invention discloses a swing angle and its application in a tooth surface polishing and bleaching device. The swing angle drives the swing output mechanism through a single handle, which converts the continuous rotation input into a back and forth swing output, so as to achieve a specific obtuse angle steering output. The single-handle drive swing output mechanism can be divided into two types: oblique handle drive and curved handle drive according to its single handle structure and function. The main body of the unit is a portable bleach handle with a built-in battery power source and a detachable swinging angle with dual-function rubber cup attached. The swing angle can also be used alone as a tooth cleaning angle in a dental clinic. The device also comes with a dual-dosage mixing component, which stores polish and bleach separately, and is mixed evenly by the handle power source before use and then applied to the tooth surface; Avoid possible bleach infection when handling.

The invention discloses mildew-proof and moisture-proof treatment equipment for wood-plastic floor processing machinery, and relates to the technical field of wood-plastic floor. The anti-mildew and moisture-proof treatment equipment for wood-plastic floor processing machinery includes an installation box, two sets of support plates are welded and installed on the top outer surface of the installation box, and two sets of support plates are welded and installed with installation plates on the top outer surface of the two sets of support plates. The top outer surface of the box is provided with an anti-mold liquid box and a drying box. The invention can rotate the anti-mold liquid box and the drying box left and right. On the one hand, the left-right rotation of the anti-mold liquid box makes the effect of heating and soaking better, and increases the fluidity of the liquid, avoiding partial soaking caused by static soaking The anti-mildew performance is effectively enhanced. On the other hand, the left and right rotation of the drying box can make the drying more uniform and thorough, avoiding the problem of water adhesion in the wood-plastic board, and effectively carrying out moisture-proof treatment. Effectively guarantee the mildew-proof and moisture-proof performance of this equipment.

The utility model discloses an automatic valve body casting cutting device which comprises a base, a supporting shaft is fixedly installed on the top face of the base, a workbench is rotatably installed on the surface of the supporting shaft, a partition plate is fixedly installed on the top face of the workbench, and a fixing plate is fixedly installed on the surface of the supporting shaft. A first driving assembly is arranged to drive a clamping plate to move, a valve body of a valve is fixedly clamped, the situation that the cutting precision is affected due to deviation during cutting is prevented, a second driving assembly is arranged to drive a threaded rod to rotate, an inner threaded barrel moves downwards, then a mounting frame is driven to move downwards, the height of a cutting knife is adjusted, valve body castings of different heights are conveniently cut, and the cutting efficiency is improved. Chippings generated during cutting can be blocked through the arrangement of the partition plate, splashing of the chippings can be reduced, the workbench can be driven to rotate through the arrangement of the first driving assembly, a worker cannot make contact with the cutting knife when taking and placing materials, and safety is higher.

The present invention provides a quenching device for CNC tool processing, which belongs to the technical field of tool quenching equipment. It includes a machine body, on which a heating component is provided, and the heating component includes a connected heating coil and a pair of heating pipelines; a quenching mechanism, and the quenching mechanism includes a positioning component for positioning the quenching of the CNC tool, a protective component for protecting the operator, and a circulating cooling component for rapid cooling, the positioning component is connected to the protective component, the protective component is connected to the machine body, and the circulating cooling component is connected to the positioning component and the protective component. By setting a quenching mechanism, the present invention not only improves the quenching effect of the CNC tool, making the quenching operation of the CNC tool simple and convenient, but also improves the safety of the operator, the operating environment and the work efficiency to a certain extent, avoids the quality problems of the CNC tool caused by improper quenching, and also saves water resources.

The invention relates to the field of optics and laser technology. The invention discloses a hollow microstructure of an LED, which includes a hollow area and a microstructure area on the LED. Hollow area, the hollow area is located above the LED light source, overlapping with the cross-section of the total reflection light cone at the height of the microstructure array; also discloses a method for manufacturing the hollow microstructure of the LED and the manufacturing method adopted The light path system, this structure can effectively improve the light intensity and light efficiency of the LED.

The invention relates to the technical field of centrifugal casting, and proposes a novel sprue bushing for centrifugal casting aluminum, which includes a sprue bushing body; The axes are perpendicular to each other; the deflector is set on the bottom surface of the first filter net, and the mesh of the deflector and the first filter net are misplaced; the connecting self-locking component is set on the sprue sleeve body to connect the sprue sleeve body In the feeding pipe of the sand box; the opening and closing assembly is arranged at the opening of the sprue sleeve body and includes a rotating shaft, a baffle and a coil spring. The body of the sprue sleeve is rotatably connected, and the coil spring is arranged on the body of the sprue sleeve. Through the above technical solution, the problem in the related art that the opening size of the sprue sleeve cannot be changed is solved.

The invention provides quenching equipment for numerical control tool machining, and belongs to the technical field of tool quenching equipment. Comprising a machine body, a heating assembly is arranged on the machine body, and the heating assembly comprises a heating coil and a pair of heating pipelines which are connected with each other; the quenching mechanism comprises a positioning assembly used for quenching positioning of the numerical control cutter, a protection assembly used for protecting operators and a circulating cooling assembly used for rapid cooling, the positioning assembly is connected with the protection assembly, the protection assembly is connected with the machine body, and the circulating cooling assembly is connected with the machine body. And the circulating cooling assembly is connected with the positioning assembly and the protection assembly. By arranging the quenching mechanism, the quenching effect of the numerical control tool is improved, the quenching operation of the numerical control tool is simple and convenient, the safety of operators, the operation environment and the working efficiency are improved to a certain extent, the quality problem of the numerical control tool caused by improper quenching is avoided, and meanwhile, water resources are saved.