262results about How to "Avoid bringing out" patented technology

The invention relates to an automatic feed and discharge system of a press robot. The automatic feed and discharge system comprises at least one punch press, an automatic feed device, an automatic discharge device and a computer automatic-control system. The automatic feed device comprises a rotary feeding mechanism and a feed manipulator device, and the computer automatic-control system comprises an integrated chip, a numerical control circuit, a display screen and a control panel; automatic feed, stamping forming and automatic discharge of the punch press, the rotary feeding mechanism, the feed manipulator device and the automatic discharge device are achieved through the computer automatic-control system. By adopting the above structure, the automatic feed and discharge system has the advantages that the machining is quick and accurate, and the machining accuracy is even; the production efficiency is improved, and the manpower cost is reduced; and manual feed and discharge are avoided, and the production safety is improved.

The invention provides a method for extracting Fischer-Tropsch synthesis product heavy distillate from a slurry bed reactor, concretely comprising the following steps: in the slurry bed reactor, when a Fischer-Tropsch reaction gas phase stream and a slurry phase stream flow through a metal sintering filter stick arranged in a liquid phase of the slurry bed reactor, the Fischer-Tropsch synthesis heavy distillate and part of catalyst powder can be separated out from the slurry phase of the slurry bed reactor; and the Fischer-Tropsch synthesis heavy distillate and part of catalyst powder are fed into a subsequent solid-liquid separation device for further separating the Fischer-Tropsch synthesis heavy distillate and the catalyst powder, so as to make the obtained Fischer-Tropsch synthesis heavy distillate meet the demand of downstream processing. The method avoids the catalyst particles from being brought out from the top part of the reactor by the gas phase stream and depositing on equipment such as a heat exchanger after being further crushed, and also improves the operational stability of the slurry bed reactor and extends the operation cycle of the apparatus, and can also provide qualified Fischer-Tropsch synthesis product heavy distillate to downstream units.

The invention relates to a method for processing radioactive wastes, which comprises the following steps of: 1) heating the radioactive wastes to obtain hot gas with trace 134Cs or 137Cs nuclide and dehydrated or carbonized solid wastes, encapsulating the dehydrated or carbonized solid wastes by a nuclear waste processing container or cement, and carrying out step 2) to the hot gas with individual trace nuclide; and 2) quenching and extracting the hot gas with individual trace nuclide. The invention provides a method for processing radioactive wastes, which is capable of manufacturing a movable processing device, reduces storage space and avoids heavy pollution to the environment and is low in storage cost.

The invention discloses a greening flower pot and a wall type greening pergola. The wall type greening pergola comprises a plurality of greening flower pots, wherein each greening flower pot comprises a flower pot main body and an irrigation pipeline communicated with a first opening, the greening flower pot is provided with a cavity, the cavity is used for placing flowers, the first opening is formed in the bottom of the flower pot main body, and is a passage used for conveying irrigation water from the outside into the cavity, the irrigation pipeline points to the cavity from the bottom of the flower pot main body, the irrigation pipeline comprises a first port and a second port, the first port and the second port are in hollow communication, the first port of the irrigation pipeline is communicated with the first opening, the second port is hung in the cavity, and the irrigation pipeline leads the irrigation water in the first opening to flow out from the first port to the second port. According to the wall type greening pergola, the watering management of the wall body greening is optimized.

The invention relates to a manufacturing method for a toothbrush and the toothbrush manufactured with the method. According to the manufacturing method, a brush holder is formed first through injection molding, a brush head is formed at one end of the brush holder and is provided with multiple brush bristle holes formed integrally, a brush bristle part is implanted in the brush head, the brush bristles of the brush bristle part protrude from a second side face of the brush head, the brush bristles and corresponding thin fragments are fixed to the brush head through hot melting shaping, and finally, an encapsulating part is formed on the brush holder and the second side face of the brush head through injection molding. The toothbrush made with the method, the whole toothbrush is completely made of plastic, the toothbrush can be directly recycled when abandoned, the number of recovery processing steps is reduced and resources are saved.

The invention relates to a swirling de-swirling coupled efficient dedusting and demisting assembly. The assembly is arranged above a spraying layer in a desulfurizing absorption tower, and comprises multiple dedusting and demisting units, wherein each dedusting and demisting unit comprises an outer cylinder, and a first stage of centrifugal swirling plate, a second stage of centrifugal swirling plate and a de-swirling hydrophobic plate provided at the top of a hollow complex cylinder aslant which are sequentially and parallelly arranged inside the outer cylinder from bottom to top, and gaps for liquid film falling are reserved among the outer edge of the first stage of centrifugal swirling plate, the outer edge of the second stage of centrifugal swirling plate and the inner wall of the outer cylinder. Compared with the prior art, the swirling de-swirling coupled efficient dedusting and demisting assembly has the advantages of simple and compact overall structure, low investment cost, good operation stability, no scaling blockage risks, capability of realizing deep dedusting and demisting on saturated wet flue gas after desulfurizing, low resistance loss, and good application prospect under lower investment cost and operating cost.

The invention relates to a stirring device, in particular to a quick stirring device for water purifier assembling. According to the stirring device for water purifying equipment assembling, time and labor are saved, uniform smearing is easy, and smearing is convenient. The quick stirring device for water purifier assembling comprises a top plate and the like. A lifting mechanism and a bracket are arranged at the bottom of the top plate; the lifting mechanism is located on the left portion of the bracket; a stirring rod is arranged at the bottom of the lifting mechanism; a supporting rod is arranged on the left side of the bracket and connected with the lifting mechanism; a bottom plate is arranged under the bottom of the top plate; a stirring box is arranged on the top of the bottom plate; and the right side of the top of the bottom plate is connected with the bracket. According to the quick stirring device, a sealing ring and Vaseline are more conveniently stirred, so that the Vaseline is smeared on the sealing ring more evenly, and the sealing ring and the Vaseline can be stirred more quickly.

The invention relates to a combined and horizontal wet type electric dust precipitator comprising a shell, a horn-shaped inlet, a horn-shaped outlet, dust precipitation units and a dust bucket, wherein each dust precipitation unit comprises an anode system, a cathode system and a spraying and cleaning system and are of a vertically stacked two or more layer structure; and a dust-water isolator is arranged between each two dust precipitation units, and a cathode frame of each cathode system is suspended on a top beam of the shell of the layer of the corresponding dust precipitation unit. By virtue of the horizontal wet type electric dust precipitator, the flowing direction of smoke of the wet type electric dust precipitator is vertical to that of flushing liquid, so that a large amount of smoke can be processed, an anode plate conveniently collects fine particles and aerosol in the smoke, and the removal efficiency of the fine particles and the aerosol is further improved.

The invention discloses a vegetable washing and drying system which comprises a washing tank, a rotation transfer shaft and a reticular conveying belt, wherein a middle sloping plate is arranged between the rotation transfer shaft and the reticular conveying belt, a vegetable selecting rod through groove is formed in the middle sloping plate, a water spraying pipe is arranged on a side wall in the washing tank, a perforated plate is mounted at the lower part in the washing tank, a magnetic bar is mounted at the lower part of the perforated plate, a water spraying device is mounted at the upper part of the front segment of the reticular conveying belt, a compressed air blowpipe is mounted at the upper part of the rear segment of the reticular conveying belt, an ultrasonic wave generator is mounted at the bottom of the washing tank, an ozone generator is mounted at the bottom of the washing tank, the upper part of the rotation transfer shaft is covered with an arc-shaped ultraviolet disinfection lampshade, an ultraviolet disinfection lamp is mounted in the arc-shaped ultraviolet disinfection lampshade, and a chloride solution is placed in the washing tank. The vegetable washing and drying system disclosed by the invention has the advantages that the structure is simple, the use is convenient, water insoluble impurities such as scrap iron in vegetables can be effectively removed, the washing efficiency is high, the disinfection effect is obvious, the fresh preservation time is long, water is saved, and the drying time is shortened.

The invention discloses a polysilicon granule preparation system, and solves the problems of the polysilicon particles in prior art, such as easy deposition on wall of a fluidized bed reactor, nonuniform particle size, low utilization rate of the polysilicon seed crystal and large loss rate of polycrystalline silicon fine powder. The system comprises an aslant arranged rotating fluidized bed, a first stage cyclone separator, a second stage cyclone separator, a carrier gas filter, a material preheating tank and a tail gas buffer tank. The reaction cylinder in the middle of the rotating fluidized bed can rotate relatively to end sockets at the two ends; and the rotating fluidized bed is provided with a baffle plate. The invention can effectively restrain deposition of the polycrystalline silicon particles in the fluidized bed reactor wall, improve utilization rate of polycrystalline silicon and reduce the loss rate of polycrystalline silicon fine powder. The invention also discloses a preparation method of polycrystalline silicon particles. The preparation method has advantages of stable process, good continuity of operations, high utilization rate of polycrystalline silicon, high efficiency of polycrystalline production and uniform size of the obtained polysilicon granules.

The invention discloses a medicine pounding tank, and relates to the technical field of pounding appliances. The medicine pounding tank comprises a tank body device, a top cover, a medicine pounding device and a conical ring, wherein the top cover is connected to the top of the tank body device in a matched mode, the conical ring is fixed at the center of the bottom of the top cover and is located on the surface of the medicine pounding device, an inner tank is arranged inside an outer tank, a reset spring is fixed between the two sides, corresponding to the top of the surface of the inner tank, of the top of the outer tank, an elastic air bag is placed at the center of the bottom of the inner wall of the outer tank, an inner cavity is formed inside the outer tank, the air outlet end of the elastic air bag communicates with the inner cavity, and a knocking device is arranged inside the outer tank and is located in the inner cavity. According to the medicine pounding tank, the self-cleaning effect is achieved, the power of the medicine pounding tank during medicine pounding is fully utilized, residual powder on the side wall is automatically cleaned through impact and air flow, meanwhile, the medicine pounding is rapid and thorough, time and labor are saved, and the working efficiency and the use performance are improved.

The invention relates to an anaerobic reactor for treating waste water containing emulsified liquid. The height-diameter ratio of a tank body is greater than 3; an inlet water distributor is arranged at the bottom part of the tank body; the anaerobic reactor is provided with a granular sludge region which is suspended at the lower part of the tank body and a floccus sludge region which is suspended at the upper part of the granular sludge region; the surface loading of a deposit chamber of a triphase separator is not higher than 0.5m<3> / m<2>.h; and an outer circulating system is adopted. Because of the coexistence of the granular sludge region and the floccus sludge region of the anaerobic reactor, the COD (chemical oxygen demand) removal rate of the waste water containing the emulsified liquid is improved to more than 60%, the subsequent waste water processing technology pressure is reduced, the total effluent quality of a whole waste water treating system can reach the standard, and the operation cost of the whole waste water treating system is lowered.

The invention relates to a storage device for a tunnel seismic prediction (TSP) blast hole emulsion explosive and an operating method of the storage device. The storage device comprises a stainless steel protective outer cylinder, wherein the front end of the stainless steel protective outer cylinder is provided with a clamping groove and connected with a cone spacer through a connecting piece, and a sealed conical surface can be formed when the cone spacer is closed; a hand lever is arranged at the rear end of the stainless steel protective outer cylinder. An inner cylinder is arranged in the protective outer cylinder in a sleeved mode and used for storing the emulsion explosive. An internal protruding clamping head is arranged at the front end of the inner cylinder, a hand lever is arranged at the rear end of the inner cylinder, and an external protruding clamping head is arranged in the middle of the exterior of the hand lever. An explosion blocking push rod is arranged in the inner cylinder in a sleeved mode, the emulsion explosive and an electronic detonator are protected by the rigid outer cylinder when the front end of the outer cylinder is closed, and thus the situation that the explosive is damaged by gravel and silt in a blast hole in the explosive filling process can be avoided; meanwhile, a conic shape is formed when the spacer at the front end of the outer cylinder is closed so that the device can be pushed in the blast hole easily, and the success rate of TSP blast hole detonation is increased; furthermore, the device is simple in structure and convenient to operate, the explosive can be placed to a predetermined depth of the blast hole only by continuously pulling out the inner cylinder in the outer cylinder, and the TSP blast hole explosive storage efficiency is greatly improved.

A green flower pot and a wall-type green flower stand, wherein the wall-type green flower stand includes: several green flower pots, each green flower pot includes: a flower pot main body, a cavity is provided in the flower pot main body, and the hollow The cavity is used to place flowers, and the bottom of the main body of the flower pot has a first opening, which is a channel for transporting water from the outside to the cavity; the watering pipe communicated with the first opening, and the watering pipe runs from the bottom of the main body of the flower pot Pointing to the cavity, the watering pipe includes a first port and a second port, the first port communicates with the second port, the first port of the watering pipe communicates with the first opening, and the second port is suspended in the air. In the cavity, the irrigation pipe guides the irrigation water in the first opening from the first port to the second port to flow out. The wall type greening flower stand of the present invention optimizes the watering management of wall greening.

The invention discloses a waste fan blade pyrolysis recovery system and a working method thereof, and belongs to the technical field of resource recovery. The waste fan blade pyrolysis recovery system comprises a crushing system, a circulating fluidized bed boiler system, a pyrolysis reactor, a material collecting and conveying device, a pyrolysis gas-solid separation system and a cracking oil separation system. According to the invention, composite materials in waste blades can be effectively cracked, cracking oil generated by cracking can be recovering, cracking gas is pumped to a hearth to be effectively incinerated, heat value contained in the cracking gas is effectively utilized, pollutants generated in the combustion process can be discharged in a standard reaching mode by means of an environment-friendly device arranged in an original boiler system, and a pyrolysis reaction in a pyrolysis reactor under an anoxic atmosphere effectively avoids the potential problems of dioxin generation and emission, and the like caused by direct incineration of the waste leaves, so that harmless and resourceful treatment of the waste leaves is completely achieved; and before the comprehensive recycling technology of the blade material is mature and utilized on a large scale, the influence of the waste blade on the environment and the like can be effectively solved, and good environmental protection benefits and economic benefits are generated.

The invention discloses a steam bag, which comprises a shell, a yielding water temperature reduction pipe and a steam-water separation device, wherein a water supply pipe, a water outlet pipe, a backflow pipe and a steam outlet pipe are arranged on the shell; a water inlet end of the water outlet temperature reduction pipe is communicated with the water supply pipe, and the water outlet end of the water outlet temperature reduction pipe is communicated with the water outlet pipe; and the steam-water separation device is arranged in the shell and is used for separating water and steam flowing back to the shell from the backflow pipe. The steam bag of the invention can reduce the temperature of the yielding water, prevent circulating cooling water from vaporization at a circulating pump, decrease the pressure fluctuation in a circulating system and reduce the damage and the harmful influence to the circulating pump. In addition, the steam bag can effectively separate the steam and the water, thereby preventing steam from flowing into the circulating water in the lower part of the steam bag and preventing the water in a boiler from being carried out of the steam bag when the steam is discharged.

The invention belongs to the technical field of lead-acid storage battery recovery, and aims to solve the problems that at present, waste gas for lead-acid storage battery recovery is simply filtered through a filter screen to filter out particle dust in the waste gas, acid gas in the waste gas cannot be effectively removed, and harmful acid gas in the waste gas can cause serious pollution to the environment; the invention particularly relates to a waste gas purification process for lead-acid storage battery recovery, wherein the waste gas purification process comprises the following steps: dust filtration treatment; filtering and deacidifying treatment: filtering and deacidifying waste gas by using filter cloth attached with acidic gas treatment liquid; and deacidification purification treatment: spraying out the treatment liquid through liquid spraying holes in the inner circumferential surface of a fixed pipe, so as to enable the waste gas to be in full contact with the treatment liquid. According to the invention, not only can the waste gas for lead-acid storage battery recovery be subjected to dust filtration treatment so as to filter out lead-containing dust in the waste gas, but also acidic harmful gas in the waste gas can be effectively absorbed, so that the pollution to the environment is remarkably reduced.

The invention discloses a tea dryer which comprises a hopper used for containing to-be-dried tea, wherein the hopper is arranged on a frame; the hopper bottom of the hopper is composed of a screen; the bottom of the hopper is connected with a hot air pipe which is used for introducing hot air into the hopper so as to dry the tea; an air inlet hole is formed in a hopper wall at an opening of the hopper; the flow direction of the airflow at the air inlet hole inclines downwards, and the periphery of the hopper faces the interior of the hopper; and the air inlet hole is connected with an induced air component. According to the tea dryer with the structure, the possibility that tea dust escapes from the dryer can be effectively reduced, the operating environment of an operator is improved, and the service life of mechanical equipment is prolonged.

The invention relates to a magnetic separating device for separating ferromagnetic substances in materials in the production process of mine separation, iron and steel, chemical engineering, building materials, glass, foods and other industries, in particular to a crossed belt type permanent magnetic separator. The crossed belt type permanent magnetic separator comprises a feeding annular belt which is driven by a feeding roller and capable of closely and circularly moving; a material selecting annular belt which is driven by a material selecting roller and capable of closely and circularly moving is arranged above the feeding annular belt; the running direction of the material selecting annular belt is vertical to that of the feeding annular belt; and a set of permanent magnets are arranged in the annular inside of the material selecting annular belt and are positioned above the top surface of the feeding annular belt. The crossed belt type permanent magnetic separator has the advantages of simple structure, convenient manufacture and good separating effect.

The invention discloses a water seepage pipe, a revegetation area water-saving irrigation system and a construction method thereof and solves the problem that existing water seepage pipes waste water resources and are poor in irrigation effect. The water seepage pipe comprises a pipe body provided with multiple water seepage holes in the pipe wall and a water seepage filler arranged inside the pipe body. Through the water seepage filler arranged inside the pipe body, irrigation water entering the water seepage pipe slowly seeps out, water resources are saved, and absorption by vegetation is facilitated; the irrigation water entering the water seepage pipe is given convenience to diffuse around and enabled to seep out from the water seepage holes in the pipe body, so that irrigation effect is good.

The invention discloses an industrial carbon monoxide waste gas treatment device. The industrial carbon monoxide waste gas treatment device comprises a carbon monoxide converter, a carbon dioxide absorber and an activated carbon purifier, wherein the carbon monoxide converter comprises a vertically arranged shell, and a first partition board and a second partition board which are horizontally arranged inside the shell; the first partition board and the second partition board partition the shell into a mixing chamber, a primary converting chamber and a secondary converting chamber from the bottom to the top; multiple groups of baffle plates are arranged inside the mixing chamber; multiple groups of primary reaction plates are arranged inside the primary converting chamber; a plurality of gas-distributing pipes and a plurality of primary reaction tubes are arranged inside the secondary converting chamber; the carbon dioxide absorber is communicated with the carbon monoxide converter; thecarbon dioxide absorber comprises a body, a gas outlet header pipe, a plurality of gas outlet subpipes, a liquid outlet pipe and a liquid removing screen mesh. The industrial carbon monoxide waste gas treatment device can completely convert carbon monoxide into carbon dioxide and absorb the carbon dioxide, so that the pollution problem of carbon monoxide waste gas is fundamentally solved.

The invention relates to a punch die ejector for a screw heading machine. An advance and retreat track is formed in the middle of the machine frame; the outer side of the machine frame is provided with an ejector pin and a rotating plate, the ejector pin is alternately abutted against by two cams, and the rotating plate is arranged on the top of the base through the ejector pin in a linkage mode;the advance and retreat track is provided with a propelling seat in a sliding mode; the front surface of the propelling seat is concavely provided with three elongated slots left and right at intervals; an ejection plate is arranged in each elongated slot; the top of the propelling seat is provided with a throw shaft which is linked with the rotating plate; a plurality of linkage arms are combined with the throw shaft; the linkage arms can pull and be matched with the pull arm so as to eject the ejection plate forward; a sliding seat is combined with the front surface of the propelling seat; the front surface of the sliding seat is provided with a plurality of punch dies; and a push pin, which is ejected forward under the linkage action of the ejection plate, is arranged in the front end of each punch die. Thus, in the invention, the push pin can be ejected forward during punch forming, so that the workpiece can be positioned in the die cavity of the master die in deed, thereby achieving good processing quality.

The invention discloses a wire discharging method, an FDM printing device, a storage medium and a processor. The wire discharging method comprises the steps that a printer carries out a command of heating a spray head when receiving a request of wire discharging, the spray head is heated to a temperature for melting printing wires, then a command of wire feeding is carried out, and the wire feeding is set as first wire feeding; residual printing wires in a melting cavity are melted by the heated spray head, and wires fed in the process of the first wire feeding squeeze the residual printing wires out of the melting cavity; a command of pullback treatment is carried out, the printing wires are lifted towards an opposite direction, and thus the lower ends of the printing wires are enabled tostay in an area between the center point of a heat dissipation area of a throat pipe and the entrance position of the throat pipe; and a cooling command is carried out, and when the printing wires after pullback are cooled to a hardened state, a wire discharging command is carried out to discharge the printing wires. According to the wire discharging method, the wires in the melting cavity are prevented from being brought out when the wire discharging is carried out, and the wires cannot be compressed flatly when passing a spring pressing device; the phenomenon of wire clamping is avoided, the wires in the melting cavity cannot be brought out, a wire guide hole is prevented from being hooked, and the success rate of wire discharging is guaranteed.

The invention relates to a mechanically-and-electrically-integrated packing machine for gloves, in particular to an automatic packing machine for soft gloves. The automatic packing machine for soft gloves aims at achieving the technical purpose of overcoming defects of the prior art. Air cylinders of the packing machine are reduced in the boxing procedure and the box sealing procedure, the packing procedure is optimized, and a new technical scheme is provided. The packing machine is simple in structure, low in cost and reliable in operation. Packing of side lugs of packing boxes is completed through slope sections of two tow chains. The packing machine further comprises a bicircular box unfolding mechanism and a tow chain movement boxing mechanism, wherein two rows of parallel double-gear-form chains are adopted in the tow chain movement boxing mechanism. Due to the fact that boxing is conducted through movement of the double-gear-form chains, an erecting air cylinder, a positioning air cylinder and other links in a packing machine in the prior art are eliminated. The automatic packing machine is simple in structure, convenient to operate and safe and reliable to use.

The invention discloses a method for removing large-particle undigested and undecomposed organic matter and sand in anaerobic digestive liquid stage by stage and a method for preparing organic liquid fertilizer base fluid with the anaerobic digestive liquid without large-particle undigested and undecomposed organic matter and sand as the raw material.Plant fibers and other large-particle undigested and undecomposed organic matter separated after staged treatment, sand and other inorganic matter are used as initial raw materials of solid biogas manure or soil conditioner, and anaerobic digestive liquid biogas residues and biogas slurry which are obtained through staged treatment are used as initial raw materials of the organic liquid fertilizer base fluid.By means of the method, the plant fibers and other large-particle undigested and undecomposed organic matter, sand and other inorganic matter can be removed from the anaerobic digestive liquid, an organic liquid fertilizer base fluid product is prepared by means of the anaerobic digestive liquid with the large-particle undigested and undecomposed organic matter, sand and inorganic matter removed, and accordingly the bottleneck problem about resource reuse of the anaerobic digestive liquid is solved.

The invention relates to a whole body disinfection spraying system, and belongs to the technical field of medical disinfection equipment. The whole body disinfection spraying system comprises an automatic opening and closing door, a cover body, a base, a grid plate and a rotary spraying device, wherein the automatic opening and closing door is arranged on the front side and the rear side of the cover body, the bottom of the cover body is open, the base is arranged at the bottom of the cover body, the base is hollow, and the grid plate is arranged at the top of the base; a rotary spraying device is arranged in the center of the top in the cover body, a liquid storage tank used for supplying a disinfectant for the rotary spraying device is arranged on one side outside the cover body, and a waste liquid tank used for collecting waste liquid in the cavity of the base through a liquid pump is arranged on the other side outside the cover body; and the rotary spraying device comprises a connecting disc, a connecting pipe, a rotary guide pipe and atomizing nozzles, wherein the connecting disc is arranged at the top in the cover body, the inner part of the connecting disc is hollow, and oneside of the connecting disc correspondingly communicates with the liquid storage tank through the pump. The whole body disinfection spraying system effectively solves the problem of incomplete disinfection caused by dead angles of the existing whole body disinfection spraying system.

The invention discloses needling equipment for nonwoven fabric, and belongs to the technical field of nonwoven fabric production equipment. The equipment includes a rack body, a needling device, driving parts, a feeding assembly and a discharging assembly. The rack body includes a moving upper board body and a fixing lower board body, a reset mechanism is mounted between the moving upper board body and the fixing lower board body, a needling assembly is mounted at the bottom of the moving upper board body, and the needling device includes a needling mounting board, needles and an anti-back-hooking assembly. When the needles break, the needling mounting board on the position is taken out, the puncturing rate of feeding and discharging is lowered, and the equipment does not need to be shut down. An elastic assembly is arranged, the elastic assembly presses down a pressing board into a surrounding frame during puncturing, the tension of the nonwoven fabric can be maintained, the needles are more convenient to puncture, the elastic assembly and the pressing board are combined to form a dust absorption channel, and sundries on the surface of the nonwoven fabric can be absorbed during puncturing.

The invention relates to a punch die ejector for a screw heading machine. An advance and retreat track is formed in the middle of the machine frame; the outer side of the machine frame is provided with an ejector pin and a rotating plate, the ejector pin is alternately abutted against by two cams, and the rotating plate is arranged on the top of the base through the ejector pin in a linkage mode;the advance and retreat track is provided with a propelling seat in a sliding mode; the front surface of the propelling seat is concavely provided with three elongated slots left and right at intervals; an ejection plate is arranged in each elongated slot; the top of the propelling seat is provided with a throw shaft which is linked with the rotating plate; a plurality of linkage arms are combined with the throw shaft; the linkage arms can pull and be matched with the pull arm so as to eject the ejection plate forward; a sliding seat is combined with the front surface of the propelling seat; the front surface of the sliding seat is provided with a plurality of punch dies; and a push pin, which is ejected forward under the linkage action of the ejection plate, is arranged in the front end of each punch die. Thus, in the invention, the push pin can be ejected forward during punch forming, so that the workpiece can be positioned in the die cavity of the master die in deed, thereby achieving good processing quality.

The invention relates to the field of fly breeding equipment, in particular to a large-scale fly breeding system which is simple in structure, good in ventilation performance in a breeding room and capable of ensuring the normal growth of flies. The large-scale fly breeding system comprises the breeding room, wherein the breeding room is composed of a top face, a bottom face and vertical faces, at least one of the vertical faces is composed of a steel wire mesh, an entrance and exit door and a window are arranged on one vertical face, fly berth parts are hung on the top face, an oviposition inducing device and a water supplying system are arranged at the lower end of the breeding room, and a plurality of food containing tables are arranged on the bottom face in the breeding room. According to the large-scale fly breeding system, the ventilation structure of the breeding room is excellent, and the stability of the liquid level in a water trough can be ensured through the water supplying system; meanwhile, a sponge layer arranged in the water trough can prevent the flies from drowning when the flies drink water, the structure of the oviposition inducing device can prevent the flies in an oviposition inducing basin from being brought out of the breeding room in the process of moving the oviposition inducing basin out of the breeding room, losses of the flies are reduced, and thus the economic benefit of an enterprise can be effectively improved.

The invention relates to the field of agricultural machinery, and in particular to a device applicable to deep pit seeding. The device comprises a seed storage mechanism and a soil drilling mechanism, wherein the seed storage mechanism comprises a cylindrical storage cabin; a discharge hole is formed in the storage cabin; the soil drilling mechanism comprises a conical drill bit; a connecting cover for opening the discharge hole is mounted on the drill bit; and the connecting cover is connected with the storage cabin in a sliding manner. By adopting the technical scheme, the purposes that influence of environment factors in the seeding process is avoided and seeding steps are simplified can be achieved.