81results about How to "Guaranteed exhaust" patented technology

The invention belongs to the field of urban construction and particularly relates to a blockage-preventing inspection well lid. The blockage-preventing inspection well lid comprises a well lid body, wherein the upper end of the well lid body is provided with a round groove, vertically communicated water draining channels are uniformly formed around the round groove, an arc-shaped elastic plate isarranged at the upper end of the round groove, a fixing rod is fixedly connected to the bottom side wall of the round groove and is sleeved with a first spring and a sleeve, the upper end and the lower end of the first spring are fixedly connected with the sleeve and the bottom side wall of the round groove, the upper end of the sleeve is fixedly connected with the lower end of the arc-shaped elastic plate, the sleeve is externally in sleeved connection with a compressing plate matched with the rough groove, an air compressing chamber is formed between the compressing plate and the round groove, an air exhausting channel communicated with the water draining channels is formed in the side wall of the round groove, a control mechanism is arranged in the air exhausting channel, multiple air inlet channels are arranged at the bottom of the round groove, and a first one-way valve is arranged in each air inlet channel. The blockage-preventing inspection well lid can automatically clean the water draining channels in the inspection well lid and prevent the blockage situation of the inspection well lid.

The invention relates to an exhaust pipe for an automobile. The exhaust pipe for the automobile is characterized by comprising an exhaust pipe body provided with an exhaust channel; the exhaust pipe body comprises an exhaust main pipe, wherein one end of the exhaust main pipe is used for being communicated with an automobile exhaust port, and the other end of the exhaust main pipe is provided with two or more exhaust branch pipes in a divided mode; one end of each exhaust branch pipe is communicated with the exhaust main pipe, and the other end of each exhaust branch pipe extends in the direction away from the exhaust main pipe; the three exhaust branch pipes are located on the same plane as the exhaust main pipe, and the exhaust branch pipe in the middle is coaxial with the exhaust main pipe; the joints, in the direction of air flow in the exhaust channel, between every two adjacent exhaust branch pipes are provided with dividing baffle sheets respectively in a protruding mode. The exhaust pipe for the automobile has the advantages that the tail gas exhaust noise of an automobile exhaust system can be lowered, the structure is simple, manufacturing and processing are easy, and a muffler does not need to be mounted compared with the prior art.

The invention relates to a device structure used in the fields of liquefied natural gas heating gasification, natural gas heating, dust removal, central air-conditioning systems and the like. A device for guiding airflows to impact the liquid level in a tangential direction for forming moisture-containing airflows is characterized in that a conical spraying opening (4) communicated with a vertical downward airflow air inlet pipe (2) is arranged in a container (3), liquid (6) is arranged under the spraying opening (4), the lower part of an airflow swirl water element (5) in a reverse umbrella shape is soaked in the liquid (6), an airflow outlet (1) is led out on a passage formed between the inner wall of the container (3) and the outer walls of the air inlet pipe (2) and the spraying opening (4), the middle of the airflow swirl water element (5) is an upwards projected pointed top (5a) and then is an arc-shaped curve surface (5c) formed by being upwards bended a little after firstly going downwards to an edge by a curve line shape extending from the pointed top to the edge, and the horizontal projection of the outer ring of the airflow swirl water element (5) has the same shape as the horizontal cross section of the spraying opening (4) and is in a circular shape or a polygon shape. The invention has the advantages of simple structure and no movable component, is applicable to various kinds of strengthened heat transfer, has the functions of dust removal, humidifying purification and the like, and improves the heat efficiency and the dust removing efficiency.

The invention relates to a production process of ultrathin-wall and leakage-free aviation aluminium alloy castings. The production process is characterized by comprising the following steps of: manufacturing a pressure-casting mould, machining a double circular ingate, a pressure-casting inlet and a distribution pouring gate on a right mould of the pressure-casting mould; machining a T-shaped exhaust groove on a left mould of the pressure-casting mould, pouring, lightly pressing, strongly pressing and demoulding; and finally carrying out infiltration process treatment. The special pressure-casting mould of the ultrathin-wall and leakage-free aviation aluminium alloy castings adopts a double circular feeding structure and a T-shaped exhaust groove structure, wherein the double circular feeding structure ensures that aluminium liquid fast enters a cavity in the pressure casting process and the thin wall of a part is partially filled; and the T-shaped exhaust groove structure ensures the exhaust of the cavity during the fast filling of the aluminium liquid and prevents the castings from carrying gas. The infiltration process of the invention improves the air impermeability of the product and enables the part to have an inflaming retarding function in addition, and the infiltration is finished through carrying out the work procedures of cleaning with hot water, drying, infiltrating and baking on the castings.

The invention belongs to a pressure test technology, and particularly discloses a low-temperature test system for a gas cylinder. The system comprises a test gas cylinder and an energy accumulator, which are positioned in a Dewar, wherein the lower end of the test gas cylinder and the bottom of the Dewar are connected with a liquid nitrogen filling pipeline respectively, and the liquid nitrogen filling pipeline is connected to a liquid nitrogen storage tank; a pipeline at the upper end of the test gas cylinder is communicated with a pipeline at the liquid nitrogen cylinder end of the energy accumulator, and extends upwards after being communicated, and a pipeline plug is arranged at an outlet of the pipeline. The pipeline at the upper end of the test gas cylinder extends upwards by a certain distance after being communicated with the pipeline at the liquid nitrogen cylinder end of the energy accumulator, and the pipeline plug is designed at the outlet of the pipeline, so that exhausting during liquid nitrogen filling of the test gas cylinder and the energy accumulator is ensured, and the test gas cylinder and the energy accumulator can be ensured to stay at a full liquid nitrogen filled state. The pipeline is sealed with the pipeline plug after the test gas cylinder and the energy accumulator are fully filled with liquid nitrogen.

The invention discloses an exhaust valve which comprises inside threads arranged at the upper part of a shell, an outside thread bolt joint arranged at the lower part of a valve cover, a threaded holearranged at the middle part of the valve cover, a valve core bolt joint, a valve seat welded with the lower part of the shell, a pipeline bolt joint, a valve core and an exhaust nozzle bolt joint, wherein exhaust holes are arranged in the valve core and an exhaust nozzle, and a floating ball is arranged in the shell. The exhaust valve is characterized in that the exhaust holes arranged at the lower end of the valve core are movably installed in a floating rod, and a valve core internal opening is arranged at the inside upper part of the exhaust hole at the lower end of the valve core. The invention adopts a silicone gasket to carry out seal set and efficiently eliminates the phenomenon of water leakage generated by impurity stacking. The silicone gasket is not easy to become aging, deformand harden. For being manufactured by adopting copper materials, the valve core 3 and the valve core internal opening 12 resist high temperature and are not easy to deform, thereby greatly improvingthe exhaust performance of the exhaust valve and efficiently ensuring the normal work of a boiler and a pipeline without causing the phenomena of pressure rise, explosion and the like in the boiler and the pipeline.

The invention discloses an integrally casting mold for an aero-engine diffuser. The mold comprises a pedestal and an upper cover plate, wherein an inner ring-shaped cavity structure of the diffuser is integrally formed between the pedestal and the upper cover plate, a frustum cone-shaped loose core is arranged at the center position of the inner ring-shaped cavity structure, a wax injection nozzle communicating with the inner ring-shaped cavity is arranged on the inner ring-shaped cavity structure; and an ejection structure for ejecting the molded diffuser is arranged at the bottom of the inner ring-shaped cavity structure. According to the mold provided by the invention, the diffuser cast can be integrally formed into a ring at a time without subsequent wax molding adhesion, and the problem of reverse pulling of the wax on the mold can be solved, and forming of the aero-engine diffuser with the thick wall is ensured.

The invention discloses a die casting mould special for an ultrathin-wall non-leakage aviation aluminium alloy element, comprising a right mould (1), a left mould (8) and a die casting inlet (4). The die casting mould is characterized in that the right mould (1) mainly comprises a fixed mould frame (10) and a fixed mould insert (11) embedded in the fixed mould frame (10); the die casting inlet (4) is arranged on the fixed mould frame (10); the fixed mould insert (11) is internally provided with a die cavity (112) in which a fixed mould insert body (12) is arranged; and the left mould (8) mainly comprises a movable mould frame (80) and a movable mould insert (81) embedded in the movable mould frame (80). The die casting mould special for the ultrathin-wall non-leakage aviation aluminium alloy element adopts a dual annular feeding structure and a T-shaped vent channel structure; the dual annular feeding structure ensures that aluminium liquid rapidly enters into the die cavity in the die casting process, thereby ensuring that the thin-wall part of the element is filled fully; and the T-shaped vent channel structure ensures the gas exhaust of the die cavity under the condition that the aluminium liquid is rapidly filled, thereby preventing the gasenclosure of a casting.

The invention discloses an aeration tank with a double aeration structure. The aeration tank comprises a tank body, a fixing frame, an aeration plate, a draining pipe and an air blower, the top of thetank body is fixedly connected with the fixing frame, a first motor is fixedly connected on the upper surface of the fixing frame, a shaft extending end of the first motor is fixedly connected with aturnplate, a limiting sleeve is fixedly connected on the lower surface of the fixing frame, a sliding rod penetrates from the inside of the limiting sleeve, a rotating shaft is arranged on each of left and right sides of the sliding rod, the aeration plate is arranged at the bottom of the tank body, and the inside of the aeration plate is hollow. The air blower is utilized to deliver air to the aeration plate to aerate sewage; a stirring rod is utilized to stir the sewage to break bubbles in the sewage, so that the sewage and the air are mixed more uniformly, and aeration is more uniform; a stirring plate is utilized to stir the sewage on the surface layer to lift the sewage, so that the sewage and the air can fully contact; a brushing plate is utilized to brush an aeration nozzle on theaeration plate to prevent the aeration nozzle from being blocked; the aeration plate is utilized to drive the sewage on the bottom layer to turn over upwards, so that the aeration process is more uniform.

The invention provides a display module set, a display device and a manufacturing method for the display module set. The display module set comprises a display panel including a display area and a non-display area surrounding the display area, a rubber layer including first adhesive material and second adhesive material both overlapped, and a heat radiating member, wherein a plurality of projectedstructures are formed in an overlapping part of the first and second adhesive material; and heat radiating member is adhered to the back surface of the display panel via the rubber layer. The thickness of the projected structures is greater than the thickness of the first or second adhesive material. With the above arrangements, a way of double-faced adhesive tape extruded by release paper can bereplaced and grinding rubber can be achieved; the plurality of projected structures are formed on the overlapped part between the first rubber and second rubber material; when external force works onthe back surface of the display panel, a buffering action is provided by the projected structures; meanwhile, the projected structures of the rubber layer has great exhausting performance; and therefore, anti-impact capacity of the display panel can be greatly improved when exhausting performance is guaranteed.

A large-scale turbocharged diesel engine comprises exhaust boilers (20 and 23) and a power turbine (31), wherein the exhaust boilers (23) are used for recovering energy in exhausted gas. One of the exhaust boilers is a part of an integral body of an exhaust receiver (3). Part of exhaust in upstream of a turbocharger turbine (6) is distributed to the power turbine. The large-scale turbocharged diesel engine comprises a preheating boiler (20) arranged on the low-pressure side of the turbocharger turbine and an overheating boiler (23) arranged on the high-pressure side of the turbocharger turbine. The large-scale turbocharged diesel engine can run in scavenge air mode highly humidified to increase recoverable energy in the exhaust. The large-scale turbocharged diesel engine can also be utilized as a heat pump to enable the temperature of exhaust leaving the engine to be lower than an environmental temperature.

The invention provides a non-leakage reversible automatic exhaust valve invented by utilizing atmospheric pressure principle. The non-leakage reversible automatic exhaust valve comprises a valve seat and a valve cover which are hermetically connected together to form a valve body; the valve body is internally provided with a convex floating cylinder which is opened wide at the lower part and is provided with a check ring liquid tank; a sealing gasket is arranged on the top of the floating cylinder opposite to the exhaust port; a check ring is arranged on the edge of the top outside the floating cylinder to form a floating cylinder liquid groove. When the liquid level of air discharge rises, a liquid sealing is formed at the bottom of the floating cylinder, the floating cylinder rises therewith relying on buoyancy and the exhaust port at the top of the valve cover is closed; when the pressure is increased and the liquid level exceeds the check ring of the floating cylinder, the feed liquor in the floating cylinder liquid groove form a liquid sealing, the valve cover air chamber forms barometric pressure, ensuring that the liquid level can not rise and achieves the purpose of no leakage; and when the liquid level drops to the position that no buoyancy is formed to the floating cylinder, the exhaust port is opened, and when the liquid level drops below the check ring of the valve seat, the bottom of the floating cylinder drops to the bottom of the valve seat liquid groove. A liquid sealing is formed by utilizing the residue liquid of the valve seat liquid groove and the valve seat check ring, and the barometric pressure principle is utilized to ensure that the air outside the floating cylinder can not enter to form inversion.

The invention discloses a nonlinear automobile exhaust pipe with an inner wall self-cleaning function, and belongs to the field of automobile exhaust pipes. According to the nonlinear automobile exhaust pipe with the inner wall self-cleaning function, according to the internal shape of a nonlinear exhaust pipe body, auxiliary in-situ rotating frames and linear cleaners, and main in-situ rotating frames and bulk cleaners are correspondingly arranged in a linear area and a bent area inside the nonlinear exhaust pipe body respectively, when tail gas flows in the nonlinear exhaust pipe body, the auxiliary in-situ rotating frames and the main in-situ rotating frames are impacted through tail gas flow to rotate, and then the linear cleaners and the bulk cleaners are driven to carry out targetedcleaning on corresponding areas of the inner wall of the nonlinear exhaust pipe body respectively, so that particles attached to the inner wall of the nonlinear exhaust pipe body are comprehensively and effectively removed, the particles are discharged out of the nonlinear exhaust pipe body along with the tail gas flow, therefore the comprehensive cleaning process of the inner wall of the nonlinear exhaust pipe body is automatically achieved, and the normal exhaust process is ensured.

The invention provides a gas detection system easy to disassemble. The gas detection system comprises a gas collector and a detector arranged on a movable lifting platform. The gas collector and the detector are connected by a gas conveying pipe. The gas collector comprises a gas cylinder and a piston. The gas cylinder comprises an opening end and a tail end. The piston stretches into the gas cylinder from the opening end. The tail end is provided with a gas outlet. The gas outlet is connected to the gas conveying pipe. The side wall of the gas cylinder is provided with a gas inlet. The gas inlet is close to the tail end of the gas cylinder. One-way vents are arranged at the gas inlet and the gas outlet. A gas blocking ring and a rotation disc are arranged at the one-way vent. A filter isarranged between the gas outlet and the gas inlet. The piston is driven by a linear motor to move. The linear motor is connected to a controller. The gas detection system has detection accuracy, a wide application range and is easy to disassemble and repair.

The invention discloses an electrically automated anti-explosion power cabinet, which comprises a shell, an air leakage mechanism and a detection mechanism, wherein the air leakage mechanism comprisesa ventilation opening and an anti-explosion upper cover; the ventilation opening penetrates through the upper end of the shell; the anti-explosion upper cover is connected to the upper end of the shell through fusion connecting components; and the detection mechanism and the fusion connecting component are electrically connected. Compared with a door which is connected through a common hinge to rotate in the prior art, the opening way disclosed by the invention is stable, a rotation angle can be easily fixed, a wrong opening problem is not likely to happen, and equipment in the shell can be more favorably protected. When the problems of short circuit and the like internally happen, the detection mechanism controls the fusion connecting components to fuse to form the segmented rise of theupper cover, so that the ventilation and the breathability of the ventilation opening are guaranteed, and explosion is avoided.

The invention discloses a method for forming handmade-simulated dumplings and relates to the technical field of food processing. Particularly, the method for forming handmade-simulated dumplings is applicable to a dumpling mechanical-forming device and includes that a wrapper arranged on an annular forming workstation of a dumpling filling device is turned over by a pattern plate of a flexible forming device in a manner that outer edges of the wrapper is spread in a wrapping state, the wrapper is gradually wrapped from inside out and form a dumpling along with horizontally relatively moving of two flexible forming blocks of the flexible forming device; and the pattern plate drives the two flexible forming blocks to move horizontally relatively. By the method for forming handmade-simulated dumplings, the purpose of mass production of handmade-simulated dumplings can be realized, and the dumplings can be extruded and wrapped for multiple times on the same workstation so that the dumplings formed are similar to those wrapped with hands in shape, and an extra procedure of manual wrapping in the conventional art is omitted.

The invention discloses an injection mold. The injection mold is formed by splicing two secondary molds; a main sprue (1), secondary sprues (3) and cavities (4) which successively communicate with one another are arranged inside the mold, and a plurality of circular pits (2) are uniformly distributed in sprue walls of the main sprue (1) and the secondary sprues (3); and a plurality of arc-shaped grooves (5) which are in one-to-one correspondence to the cavities (4) are formed in each secondary mold of the mold; each complete gradually reduced round hole of which the radius is gradually reduced from inside to outside is formed by combining the corresponding two arc-shaped grooves (5) at corresponding positions of the two secondary molds; a circular truncated cone (6) of which the shape is matched with that of each gradually reduced round hole is in close fit with the inside of the gradually reduced round hole; and each spiral pressure relieving groove (7) through which the corresponding cavity (4) communicates with air of the outside is formed in a side surface of the corresponding circular truncated cone (6). By the injection mold, flow resistance of melt can be reduced effectively, and pressure loss is reduced.

The invention relates to electric equipment, in particular to an energy storage battery. The energy storage battery comprises a pole column, a box body, a pole plate, a box cover and a lead, wherein a battery jar is formed in the box body; the pole plate is arranged in the battery jar; the box cover further comprises an upper cover and a lower cover; the edge of the upper cover is connected with the upper surface of the lower cover; a wiring exhaust space is formed between the upper cover and the lower cover; the upper cover is provided with a lead exhaust channel used for communicating the outside space with the wiring exhaust space; the lower cover is matched with the box body; a pole column hole and a vent hole used for communicating the battery jar with the wiring exhaust space are formed on the lower cover; the lower end of the pole column passes through the pole column hole to be connected with the upper part of the pole column; the inner end of the lead is connected with the upper end of the pole column; and the outer end of the lead extends into the lead exhaust channel. The energy storage battery provided by the invention fully utilizes the protective performance of a shell and omits a special protective device, so the energy storage battery is very convenient and simple in mounting, reduces the mounting cost and has high water resistance and exhaust performance.

The invention relates to the technical field of automobiles, and particularly discloses an exhaust control method for a gas-driven urea pump system. The exhaust control method comprises the followingsteps of: S1, judging whether a key door is powered off or not, if so, entering step S2, and if not, entering step S3; S2, judging whether the gas pressure in a urea box is in a preset range and the environment temperature is higher than a preset temperature at the same time or not, if yes, not exhausting the urea box, and if not, exhausting the urea box; and S3, judging whether the rotating speedof an engine is zero, the current fuel injection quantity is zero, the vehicle speed is zero and the accelerator pedal opening degree is not smaller than a preset value within preset time at the sametime or not, if yes, exhausting the urea box, and if not, not exhausting the urea box. By means of the exhaust control method, the problems that the urea box is frequently exhausted, air consumptionof an air compressor is wasted, personnel safety cannot be guaranteed during manual exhaust, and threads of a urea box cover are abraded can be solved.

The present invention relates to a dust-removing system of a projector, which comprises an air discharging wall, wherein a plurality of air discharging holes is arranged on the air discharging wall for discharging air in the projector. The dust-removing system of a projector with a grid also comprises the grid. The grid is arranged at the air discharging wall; a plurality of lug bosses is arranged on the grid; and the lug bosses enable the air discharging holes to communicate with the outside, or to seal the air discharging holes. In the dust-removing system of a projector, the lug bosses are arranged on the grid to enable the air discharging holes to communicate with the outside when the projector works, which does not affect the radiation and air discharging of the projector. When the projector stops working, the lug bosses on the grid are used for sealing the air discharging holes, which prevents dust from entering, the dust-removing ability of the projector is improved, and good dust-removing effect is reached.

The invention belongs to the technical field of exhaust pipes, and particularly relates to an automobile exhaust pipe suspension damping device which comprises a first rubber shell, a second rubber shell, a fixing base, a hoop, a fastening sealing piece, a hoisting damping component and rubber sealing rings. The rubber sealing rings and the first rubber shell are driven by the vibrating silencer to vibrate together, so that the rubber sealing rings slightly move in a staggered mode, and meanwhile, the first rubber shell elastically deforms, so that flexible connection between the silencer andthe exhaust pipe is achieved while automobile exhaust is guaranteed, and meanwhile, the flexible joint between the silencer and the exhaust pipe is sealed through the first rubber shell and the secondrubber shell; flexible connection between the silencer and an automobile chassis is achieved by arranging a hoisting shock absorption part, and buffering and shock absorption are conducted on the vibrating silencer, so that vibration of the silencer is prevented from being transmitted to the vehicle body to generate resonance, noise generated by automobile exhaust is reduced, and then riding comfort is improved.

A large-scale turbocharged diesel engine comprises exhaust boilers (23) and a power turbine (31), wherein the exhaust boilers (23) are used for recovering energy in exhausted gas. One of the exhaust boilers is a part of an integral body of an exhaust receiver (3). Part of exhaust in upstream of a turbocharger turbine (6) is distributed to the power turbine. The large-scale turbocharged diesel engine comprises a preheating boiler (20) arranged on the low-pressure side of the turbocharger turbine and an overheating boiler (23) arranged on the high-pressure side of the turbocharger turbine. The large-scale turbocharged diesel engine can run in scavenge air mode highly humidified to increase recoverable energy in the exhaust. The large-scale turbocharged diesel engine can also be utilized as a heat pump to enable the temperature of exhaust leaving the engine to be lower than an environmental temperature.

The invention discloses an air exhausting device of a centrifugal pump. A feed port and a discharge port of the centrifugal pump are communicated with corresponding material tanks through a feed pipe and a discharge pipe respectively; an air exhausting tank communicated with the feed port is fixedly arranged in the position, on the front portion of the feed port, of the feed pipe mode; an air exhausting pipe capable of being controlled to be opened and closed is formed on the air exhausting tank; a floating plug capable of floating on conveyed materials and sealing the air exhausting pipe is arranged in the air exhausting tank. Because the air exhausting device is additionally arranged at the front end of an air inlet of the centrifugal pump, conveyed air mixed up with Emu oil can enter the air exhausting tank through a pipeline and can be accumulated in the air exhausting tank, an air exhausting valve can be automatically or manually controlled to exhaust air along with the accumulation of air in the air exhausting tank, when air exhausting is conducted and the amount of the Emu oil in the air exhausting tank increases accordingly, the floating plug is driven to rise until the pipeline of the air exhausting tank is sealed because the liquid level of the Emu oil in the air exhausting tank rises, and accordingly the air exhausting device of the centrifugal pump can guarantee air exhausting and can also effectively avoid Emu oil leakage.

The invention discloses an environment-friendly new energy pure electric vehicle exhaust device. A device body is mounted at the top end of a new energy vehicle, a protective cover is mounted at the top of the device body, a left protective plate is mounted on the left side of the top of the protective cover, and a left electric pushing rod is mounted at the bottom of the left protective plate; and a right protective plate is mounted on the right side of the top of the protective cover, a right electric pushing rod is mounted at the bottom of the right protective plate, and an exhaust fan is mounted in the middle of the protective cover. According to the environment-friendly new energy pure electric vehicle exhaust device, the left protective plate and the left electric pushing rod are hinged, the right protective plate and the right electric pushing rod are hinged, the left electric pushing rod can push the left protective plate to move up and down, the right protective plate can pushthe right electric pushing rod to move up and down, the flexible and quick effects are achieved, and opening and closing of the left protective plate and the right protective plate are achieved conveniently; and the inclined angle of a solar cell panel can further be adjusted while the exhausting and the protective effects are ensured, the utilization rate of energy is increased, and the workingcost of the device body is reduced.

The invention discloses a centrifugal vibration impurity-filtering device for cereals. The centrifugal vibration impurity-filtering device comprises a shell, an upper cover, a motor, a rotating pipeline, an air-spraying pipeline, a filter net and a hot-air blower, the lower end of the motor is connected with the rotating pipeline through a coupling for transmission, the rotating pipeline is a hollow pipeline with the closed upper end, sliding grooves are symmetrically formed in the front side and the rear side of the middle of the rotating pipeline in an embedded mode, a first sliding ring isarranged at the periphery of the rotating pipeline in a connected mode, the filter net is arranged at the periphery of the first sliding ring in a welded mode and is in a circular-truncated-cone shape, the outer side edge of the filter net and the inner wall of the shell are slidably attached, and a vibration assembly is arranged at the periphery of the rotating pipeline in a connected mode and connected with the filter net and drives the filter net to move vertically in a reciprocating mode. According to the centrifugal vibration impurity-filtering device for the cereals, rapid and efficientscreening can be conducted through centrifugal swinging and vertical reciprocating shaking modes, by matching blowing of hot airflow, the cereals are convenient to dry, and impurity collection is promoted.

The invention discloses an injection mold. The injection mold is formed by splicing two secondary molds; a main sprue (1), secondary sprues (3) and cavities (4) which successively communicate with one another are arranged inside the mold, and a plurality of circular pits (2) are uniformly distributed in sprue walls of the main sprue (1) and the secondary sprues (3); and a plurality of arc-shaped grooves (5) which are in one-to-one correspondence to the cavities (4) are formed in each secondary mold of the mold; each complete gradually reduced round hole of which the radius is gradually reduced from inside to outside is formed by combining the corresponding two arc-shaped grooves (5) at corresponding positions of the two secondary molds; a circular truncated cone (6) of which the shape is matched with that of each gradually reduced round hole is in close fit with the inside of the gradually reduced round hole; and each spiral pressure relieving groove (7) through which the corresponding cavity (4) communicates with air of the outside is formed in a side surface of the corresponding circular truncated cone (6). By the injection mold, flow resistance of melt can be reduced effectively, and pressure loss is reduced.