54results about How to "Set firmly" patented technology

The present invention provides a method of setting a set of left-and-right slide fastener's vertical-line slider,making one end which is automatically set at the chain tooth line possess detachable bottom stop block,and making the other side of the slide fastener possess top stop block.Following the present invention the method of setting the slide fastener's slider is setting the slider(10) on the chain tooth lines(3a,3b) between the first and second vertical strip(1,2),includes: the first working procedure of orienting the direction of the chain tooth lines(3a,3b) to make the first and the second vertical line of the slide fastener(1,2) in a right-and-left curving state;the second woking procedure of moving the slider(10) to make the first vertical strip(1) located on the side of the slider(10) and make the second vertical strip(2) linking to the below wing board(18);the third woking procedure of jointing the first vertical strip(1) to the slider(10);the fourth working procedure of moving the first and the second vertical strip ahead to joint the box-shaped pin(5) to the slider(10);and the fifth working procedure of countermarching the inserted pin(7) when it has moved to the frontage of the slider(10) to make the slider(10) setting on the right-and-left chain tooth line.

The invention discloses a hoop device based on a triangular structure, relates to the technical field of oil pipeline hoops, and avoids the inability to ensure the stability of the oil pipeline clamping in the prior art; it includes a support mechanism for hugging the oil pipeline periphery and an adjustment assembly for adjusting the distance between the support mechanisms and locking them. The support mechanism includes an upper support plate and a lower support plate oppositely arranged. There are three hoop plates and three sets of hoop plates for contacting the oil pipeline inside the support mechanism. An adjustable component that supports the hoop plate and is vertically connected with the support plate. The materials of the three hoop plates are all made of NBR. The three sets of adjustable components can make the corresponding hoop plate radially adjusted along the oil pipeline. A hollow cavity filled with a low-melting-point metal alloy is arranged in the hoop plate, and a heater for heating the low-melting-point metal alloy is arranged in the hollow cavity. By implementing the technical solution, the ductile triangular hoop mechanism is used to realize the stability of clamping the oil pipeline.

The embodiment of the invention provides a spring grinder with an automatic feeding function, and belongs to the technical field of spring grinders. The spring grinder with the automatic feeding function comprises a spring grinder main body, a conveying mechanism, a spring base, a feeding mechanism, an overturn assembly and a manipulator assembly, wherein the conveying mechanism comprises a rotating disc, and the rotating disc is movably arranged on the spring grinder main body; the spring base is arranged on the rotating disc; the feeding mechanism comprises a vibration plate assembly; the overturn assembly comprises an overturn base, an turnover shaft movably arranged on the turnover base, and a core rod arranged on the turnover shaft; the core rod can penetrate through a spring; and themanipulator assembly is movable and is arranged between the core rod and the spring base. The technical effect of smooth spring feeding is achieved.

The invention relates to an external expansion type soluble bridge plug. According to the technical scheme, the lower end of a connecting head is movably connected with the upper end of a pull rod; acentral tube sleeves the pull rod; an upper slip seat, an upper cone body, one first retaining ring, one second retaining ring, one dual-setting cone body, an external expansion rubber cylinder, another dual-setting cone body, another second retaining ring, another first retaining ring and a lower cone body sequentially sleeve the central tube from top to bottom. A lower slip seat sleeves the lower portion of the lower cone body and the pull rod. A base sleeves the lower portion of the lower slip seat and the pull rod. The two ends of an inner hole of the external expansion type rubber cylinder are of conical structures. The dual-setting cone body is in conical surface fit contact with the second retaining ring and the external expansion rubber cylinder. Slip teeth are inlaid in the upperslip seat and the lower slip seat. The external expansion type soluble bridge plug has the beneficial effects that the rubber cylinder is of an externally-expanded structure, the sealing compensationis large, and the sealing effect is good; the pull rod is designed in the inner hole of the central tube, the central tube is not stressed, strength requirements of the central tube are small, and theinner diameter is designed to be much larger; and the slip teeth are made of inlaid ultra-hard ceramic materials, so that the setting firmness is ensured.

The invention relates to an air tightness detection system for a pressure vessel. The system comprises a test platform, a pressure vessel body, a sealing device and a gas transmission device, and thepressure vessel body is placed on the test platform. The gas transmission device is arranged on the test platform; the upper end of the pressure vessel body is connected with the sealing device. According to the invention, the following problems existing in air tightness detection of a conventional pressure vessel can be solved: a, gas is introduced into a pressure container for detection in mostmethods adopted at the present stage, but often inaccurate detection results exist due to the fact that the leaked gas affects the judgment of detection personnel due to improper sealing treatment ata joint; and b, when the air tightness of the existing pressure vessel is detected, a clamping tool at the interface of the pressure vessel is complex in structure and inconvenient to use and maintain. The air tightness detection system can be suitable for detecting a large batch of pressure vessels, the detection effect can be ensured, and the labor amount of staff is reduced.

The invention relates to a bagging machine for automatic bagging and mouth tying of edible mushrooms. The bagging machine comprises a machine frame. An edible mushroom cultivation material automatic bagging mechanism, an edible mushroom cultivation material bag automatic bagging mechanism and an edible mushroom cultivation material automatic mouth tying mechanism are sequentially arranged on the machine frame. The edible mushroom cultivation material automatic bagging mechanism comprises a material filling assembly and an expansion-stopping holding cylinder assembly which are distributed on the left side and the right side. The edible mushroom cultivation material bag automatic bagging mechanism comprises an edible mushroom cultivation material bag storing box with an opening in the upperend, a bag suction box for taking bags, a lower bag suction box for supporting the bags, a vacuum negative-pressure draught fan and a bagging assembly for bagging. The edible mushroom cultivation material automatic mouth tying mechanism is reasonable in design, the automatic bagging operation of an edible mushroom cultivation material can be realized, the edible mushroom cultivation material can be covered with dual layers of mushroom bags, and the requirement for automatic production of the edible mushrooms is met.

The invention discloses a plastic film heat-sealing device, which comprises a heat-sealing box. A film storing notch is formed in one side of the heat-sealing box, a film placing mechanism is arrangedon the surface of the film storing notch, a hydraulic pump is mounted on the upper surface of the heat-sealing box, a film cutting mechanism is arranged at the position, at the hydraulic pump, insidethe heat-sealing box, a film conveying mechanism is arranged at the position, below the film cutting mechanism, inside the heat-sealing box, the film conveying mechanism comprises a metal transmission belt and two sets of transmission wheels, a plurality of sets of mounting openings are evenly formed in the upper surface and the lower surface of the metal transmission belt, suction cups are mounted in the mounting openings, one ends of the suction cups are connected with hoses in a communicating mode, an air pump is fixedly mounted inside the metal transmission belt, and the hoses are connected with the air outlet end of the air pump in a communicating mode. In the using process of the plastic film heat-sealing device, a plastic film coil is placed conveniently, and a film subjected to heat sealing can be moved to a film outlet to be discharged through transmission of the metal transmission belt; and artificial manual operation is not needed in the heat sealing process, and the heat sealing efficiency of the plastic film is improved.

The invention discloses a cutting device for a petroleum pipeline. The cutting device for the petroleum pipeline comprises a hoop which is arranged on the petroleum pipeline in a sleeving mode, wherein holes are formed in the side faces of the hoop. The cutting device for the petroleum pipeline further comprises a cutting ring, a circular ring and cutters, wherein the circular ring is fixed to one side face of the cutting ring and is concentric with the cutting ring, the cutters are fixed to the left side and right side of the other side face of the cutting ring respectively, and the circular ring penetrates through the holes formed in the side faces of the hoop to be arranged in the hoop in a rotary mode. Each cutter comprises a cutting base and a cutting knife, wherein the cutting base is of a cavity structure with the two side faces being open, and the cutting knife penetrates through the openings in the two side faces of the cutting base to be to be arranged in the cutting base. According to the cutting device for the petroleum pipeline, the position of the cutting ring is fixed through the hoop, and it is guaranteed that the petroleum pipeline is cut through the cutting knives smoothly. The two end faces of a semicircular shell A are arranged in the two end faces of a semicircular shell B in a sliding mode respectively, in this way, the size of the hoop can be slightly adjusted, and the cutting device can be suitable for petroleum pipelines in different sizes to a certain extent.

The invention discloses a hoop device for oil pipelines, relates to the technical field of hoop hoops for oil pipelines, and is used to solve the problem that the stability of oil pipeline clamping cannot be guaranteed in the prior art; Two sets of arc-shaped mechanisms on the oil pipeline, and an adjustment assembly for adjusting and locking the distance between the two sets of arc-shaped mechanisms. Both sets of arc-shaped mechanisms include arc-shaped hoop plates and arc-shaped hoops for supporting The supporting components of the plate, the material of the arc-shaped hoop plate is NBR, and each set of support components is symmetrically arranged at both ends of the arc-shaped hoop plate and can support the radial adjustment of the arc-shaped hoop plate along the oil pipeline, and the arc-shaped hoop plate A hollow cavity filled with a low-melting-point metal alloy is arranged in the hoop plate, and a heater for heating the low-melting-point metal alloy is arranged in the hollow cavity. By implementing the technical solution, it can adapt to oil pipelines of different sizes to a large extent, and the stability of clamping the oil pipeline can be guaranteed through the ductility of the arc mechanism.

The invention discloses an embedded dual restorer for heavy metal soil improvement, and belongs to the technical field of soil restoration, a microbial soil restoration agent can be periodically injected into an improver embedding box through cooperation of the improver embedding box and a plurality of U-shaped seepage rods, and the microbial soil restoration agent is guided into soil from a plurality of filter holes in the U-shaped seepage rods, so the diffusion balance degree of the microbial soil adsorbent is effectively improved; the microbial soil remediation agent has the effects of directly or indirectly improving soil, restoring soil fertility, preventing soil-borne diseases, maintaining rhizosphere microflora balance, degrading toxic and harmful substances and the like, and is matched with the attapulgite buried rod arranged on the outer side of the U-shaped material seeping rod; the attapulgite buried rod is matched with a plurality of heavy metal adsorption balls arranged outside the attapulgite buried rod in a sleeving mode, so the effects of gathering, adsorbing and passivating heavy metal in soil are achieved; the operation is easy, convenient and feasible, the improvement and adsorption are combined, and the remediation effect on the heavy metal soil is effectively improved to a certain degree.

The invention relates to an air extracting pump module and a refrigerating and freezing device. The air extracting pump module comprises a sealing box; the sealing box comprises a lower box body with an opened upper side, and an upper box body with an opened lower side; the upper box body tightly covers the upper side of the lower box body to define sealed space with the lower box body; an air extracting pump is arranged in the sealed space of the sealing box; an intake pipe and an exhaust pipe of the air extracting pump both upwards extend; an intake connecting pipe and an exhaust connecting pipe are embedded in the upper box body, and both extend in the up-down direction; the intake connecting pipe is positioned rightly above the intake pipe, and is sleeved on the intake pipe; and the exhaust connecting pipe is positioned rightly above the exhaust pipe, and is sleeved on the exhaust pipe. The air extracting pump module can reduce outward propagation of noise in operation of the air extracting pump, and can be convenient to dismount the upper box body onto the lower box body.

The invention relates to the technical field of sapling protection, in particular to a camellia sapling protective cover which comprises a bottom ring, a top ring, a plurality of telescoping rods and a vibration device. A plurality of spiral holes are formed at intervals in the bottom ring and the top ring and the spiral holes are corresponding to each other. Two ends of each of the telescoping rods are respectively screwed with the corresponding spiral holes in the bottom ring and the top ring so that a protective cover body is formed. The top ring is provided with a plurality of slits with opening facing the ground; telescoping net screen, telescoping filter paper and telescoping breathable film are arranged in the slits from inside to outside sequentially, and can be extended to coat the protective cover body. The vibration device is arranged on the top ring and comprises a battery, a switch and a vibrator plate; the battery and the vibrator plate are in electric connection with the switch. The protective cover effectively prevents herbicides from touching camellia sapling to reduce damage to the camellia sapling, is telescopic, can be removed at any time to reduce space occupation, and is simple in structure.

The invention discloses petroleum pipeline machining equipment. The petroleum pipeline machining equipment comprises a hoop arranged on a petroleum pipeline in a sleeving mode, and a hole is formed in the side face of the hoop. The petroleum pipeline machining equipment further comprises a cutting ring which penetrates through the hole formed in the side face of the hoop and is arranged in the hoop in a rotating mode, and cutters which are fixed on the left side and the right side of the upper surface of the cutting ring respectively. Each cutter comprises a cutting base and a cutter body. Each cutting base is of a cavity structure with the two end faces opened, grooves are formed in the inner walls of cavities of the cutting bases, and the cutter bodies penetrate through openings in the front end face and the rear end face of the corresponding cutting base to be arranged in the grooves in a sliding mode. The petroleum pipeline machining equipment further comprises hydraulic cylinders fixed on the cutter bodies, and piston rods in the hydraulic cylinders are connected to the ends, located outside the cutting ring, of the cutter bodies. According to the petroleum pipeline machining equipment, the position of the cutting ring is made unchanged through the hoop, and it is guaranteed that the cutter bodies can cut the petroleum pipeline smoothly due to the arrangement of the hoop; the hydraulic cylinders fixed at the ends of the cutter bodies can continuously push the cutter bodies to move in the to-be-cut direction of the petroleum pipeline, the cutting thickness is increased continuously, and the cutting effect is guaranteed.

The invention relates to the technical field of tractor gearbox assembling, and discloses a part assembling device of a stepless gearbox for a tractor, the part assembling device comprises a machining table, a feeding part, a machining part and a moving part, the machining part and the moving part are arranged at the top of the machining table at an interval, and the feeding part is provided with two parts; one part of the feeding components are located below the machining table, and the other part of the feeding components are located above the machining table and connected with the moving component. The gearbox assembly line has the beneficial effects that through cooperation of the feeding component, the machining component and the moving component, automatic feeding and automatic assembly of multiple parts can be achieved, the gearbox assembly time is shortened, the manual labor intensity is lowered, and the production efficiency is improved.

The invention discloses a PBT material coating, which comprises a paint flame retardant base layer, the top surface of the paint flame retardant base layer is provided with an antioxidant layer, and the bottom surface of the paint flame retardant base layer is provided with an adhesion layer; the paint flame retardant base layer is prepared from the following raw materials in parts by weight: 9-11parts of latex paint, 2-3 parts of a flame retardant and 1-2 parts of a fluorescent material; the antioxidant layer is prepared from the following raw materials in parts by weight: 5-7 parts of polyethylene, 3-5 parts of iron powder and 12-14 parts of flame retardant rubber; the adhesion layer is prepared from the following raw materials in parts by weight: 7-9 parts of an adhesive and 1-2 partsof resin; the preparation method of the PBT material coating comprises the following steps: (1) manufacturing the adhesion layer; (2) producing the paint flame retardant base layer; and (3) producingthe antioxidant layer. The antioxidant layer is arranged on the surface of the paint flame retardant base layer to form protection for the paint flame-retardant base layer, prevents the paint flame retardant base layer from oxidizing and falling off, and weakens the flame-retardant performance of the paint flame retardant base layer; and the arrangement of the adhesion layer can ensure that the paint flame retardant base layer is more firmly combined with PBT materials and the paint flame retardant base layer.

The invention relates to a metal oxide lightning arrester for GIS. A low-potential part of the lower part of a lightning arrester cylinder is of a necking-down close-up structure, the diameter of thelower part of the cylinder and the diameter of a corresponding base at the lower part of the cylinder are reduced, and the volume of the cylinder is reduced, so that the internal space of the cylinderis adequately utilized. Meanwhile, a conductive rod is directly fixedly connected to an insulator, and a voltage-sharing cover is fixed on the insulator in a top-pressure manner through a fixed connecting structure between the conductive rod and the insulator, so that components such as a touch seat and a voltage-sharing cover mounting seat are saved, the number of the components of the whole lightning arrester is decreased; and the periphery of the conductive rod can be completely covered with the voltage-sharing cover, so that the shielding effect of the voltage-sharing cover to the conductive rod is improved.

The invention relates to the technical field of gas ash dezincification and discloses a heat utilization device in a dezincification process of gas ashes. The heat utilization device comprises a rotary kiln, wherein a feeding device is arranged in a feeding hole of the rotary kiln; a smoke vent of the rotary kiln is connected with a dust collector through a cooler; the cooler comprises a transversely arranged long tube, and a smoke inlet is arranged at one end of the long tube; the smoke inlet is communicated with the smoke vent of the rotary kiln through a pipe and a smoke outlet is arranged in the outer end of the long tube; the smoke outlet is communicated with the dust collector through a pipe; and a plurality of inverted U-shaped tubes are uniformly arranged in the middle of the long tube, openings in two ends of each inverted U-shaped tube communicate with the long tube, an inner tube is arranged in each inverted U-shaped tube, one end of each inner tube communicates with air through an air pump and the other end of each inner tube sequentially passes through the corresponding inverted U-shaped tube and penetrates out of an outlet of the inner tube on the long tube, and each inner tube, which penetrates out of the outlet of the inner tube, is connected with the feeding device through a branch hose. According to the heat utilization device, raw materials of the gas ashes are heated by using the heat in the dezincification process to remove moisture.

The invention relates to bundling equipment. The bundling equipment comprises a workbench, a pressing plate assembly, a first driving assembly and a second driving assembly. The workbench is provided with a storage area for storing battery cells, and the pressing plate assembly is provided with an accommodating space for installing a bundling ring; the first driving assembly and the second driving assembly are both installed on the workbench, and the first driving assembly is used for driving the pressing plate assembly to clamp the battery cells placed in the storage area; and the second driving assembly is used for driving the pressing plate assembly to move, so that the accommodating space drives the bundling ring to approach the storage area, and the bundling ring is arranged on the battery cells clamped by the pressing plate assembly in a sleeving manner. When the binding equipment provided by the invention is used for assembling the battery module, the bundling ring can be automatically sleeved on the battery cells, so that the assembling efficiency of the battery module can be improved, and the labor intensity of workers is reduced.

The invention discloses an eye massage assembly. The eye massage assembly comprises a massage bottom plate, a heating assembly and a massage head sleeve made of the flexible glue, wherein the massagehead sleeve comprises a flexible glue substrate and a plurality of massage contacts, the flexible glue substrate is arranged on the massage bottom plate in a sleeving manner, the heating assembly comprises a heating body and a heat conduction piece, and the heating body is attached to the inner side of the heat conduction piece; and the massage bottom plate is provided with a plate surface curvedsurface facing the massage head sleeve, a concave part is formed in one side of the plate surface curved surface of the massage bottom plate, the heating body and the heat conduction piece are arranged on the massage bottom plate and located in the concave part, the exposed surface of the heat conduction piece and the plate surface curved surface are equal in height and consistent in trend, and the heat conduction piece makes contact with the flexible glue substrate. By means of the eye massage assembly, the hot compress effect is improved. The invention further provides a mechanical eye massager provided with the eye massage assembly.

The invention relates to the technical field of biological filter materials, in particular to a composite biological filter material for a biological aerated filter. The equipment comprises an outer cylinder body and an inner cylinder body, the outer cylinder body and the inner cylinder body are connected through a connecting rod; a plurality of outer through holes and a plurality of inner throughholes are respectively formed in the outer cylinder body and the inner cylinder body; the positions of the outer through holes in the outer cylinder body are in one-to-one correspondence with those of the inner through holes in the inner cylinder body; a fiber filter material is arranged between the outer through hole and the inner through hole, the fiber filter material is fixed in the inner through hole and penetrates through the outer cylinder body through the outer through hole, vermiculite and ceramsite are arranged in the inner cylinder body, baffle plates are arranged at the two ends of the inner cylinder body, and a plurality of water inlet holes or water outlet holes are formed in the two baffle plates respectively; the vermiculite, the ceramsite and the fiber filter material areused as the filter materials, and the vermiculite and the ceramsite are placed in the inner cylinder, so that the contact time of sewage and the vermiculite and the ceramsite is prolonged, the contact area of the sewage and the vermiculite and the ceramsite is increased, and the water treatment efficiency is higher.

The invention relates to a smoke discharging and filtering device of a laser engraving machine. The smoke discharging and filtering device comprises a laser engraving machine body and a sealing cover plate, the top side of the laser engraving machine body is movably connected with the sealing cover plate, a dust collecting mechanism is arranged at the left side of the top of the laser engraving machine body, and a filtering mechanism is arranged at the right side of the dust collecting mechanism; connecting pipelines are arranged at the top side of the sealing cover plate at equal intervals, sliding grooves are symmetrically dug in the left side of the top of the laser engraving machine body, the rear sides of inner cavities of the sliding grooves penetrate through the rear side of the laser engraving machine body, and the dust collecting mechanism and the laser engraving machine body can be rapidly assembled or disassembled. Smoke generated in the laser engraving machine body can be more quickly absorbed, the working efficiency is greatly improved, the absorbed smoke can be more visually detected and treated, the functionality is greatly improved, the smoke can be effectively purified and filtered, the situation that the smoke is directly discharged to the outside to cause environmental pollution is avoided, and the environment-friendly effect is greatly improved.

The invention provides an embedded sealing unit, and belongs to the field of well fixing devices. The embedded sealing unit comprises a sealing assembly and an expansion sealing assembly. The sealing assembly is arranged in a sealing sleeve. The expansion sealing assembly comprises a central pipe. One end of the central pipe is connected with a sleeve accessory through an internal thread. The other end of the central pipe is provided with a positioning notch groove. The expansion sealing assembly is fixed to the horizontal plane and can drive the sealing assembly for sealing. The defects in the prior art are overcome; the high cost for machining a special threaded sleeve accessory when a well is fixed through a special threaded sleeve is reduced; meanwhile, for reliably fixing the sleeve accessory in the sleeve, the embedded sealing unit is used in cooperation with the sleeve accessory, the functions of a conventional sleeve accessory can be provided, and the embedded sleeve accessory can be installed on a construction site; the embedded sealing unit is reasonable in structure, low in price, convenient to operate, reliable in function and capable of being applied to various threaded sleeves.

The invention discloses a small portable household clothes-washing bucket. The small portable household clothes-washing bucket comprises an agent storing can, a filter screen and a stirring device, wherein the filter screen is arranged on the upper left portion of the agent storing can, and the stirring device is arranged in the agent storing can. The agent storing can is of a rectangular box structure, a rubber connecting ring is arranged on the upper left portion of the agent storing can, and a can cover is clamped to an opening in the upper end of the rubber connecting ring. According to the small portable household clothes-washing bucket, the can cover can be opened separately, so that water and a clothes-washing agent are conveniently poured into the clothes-washing bucket; the filterscreen can be controlled to be disassembled and assembled through the rubber connecting ring, connection is easy, moreover, the rubber connecting ring is made of a rubber material, the leakproofnessis high, and convenience is brought to use; the stirring device is arranged in the agent storing can, the agent and water in the agent storing can can be fully stirred and mixed by using the stirringdevice, and the clothes-washing effect is improved.

The flying paint attachment preventing system comprises a paint spraying equipment body and an adjusting mechanism, the adjusting mechanism comprises a bottom pipe, a connecting part and a positioning part, the outer surface of the paint spraying equipment body is slidably sleeved with the bottom pipe, the connecting part comprises a connecting pipe, and the outer surface of the bottom pipe is slidably sleeved with the connecting pipe; the outer surface of the connecting pipe is slidably sleeved with a connecting ring, and one end of the connecting ring is in threaded connection with an adjusting ring. According to the paint spraying device, when the paint spraying device is used, the outer surface of the paint spraying device body is effectively sleeved with the bottom pipe, then the positioning ring can effectively move and extrude the pressing block by rotating the positioning ring, then the pressing block can effectively press the linkage rod downwards, and then the linkage rod can effectively press the positioning block downwards; under the limitation of the positioning position, the equipment can be stably arranged on the outer surface of the paint spraying equipment body in a sleeving mode, then the adjusting ring is rotated according to the actual spraying requirement, and then the adjusting ring can push the connecting ring.

The invention provides a flexible communication device. The flexible communication device comprises a display structure and a flexible protection mechanism; the display structure comprises a shell, anoutput screen, and a key part, wherein the output screen is arranged on the shell, the key part is arranged at one side, far away from the output screen, of the shell, and a key slot is arranged on the key part; and the flexible protection mechanism is sleeved on the periphery of the shell. The flexible communication device provided by the invention has a protection function.

The invention relates to the technical field of pleurotus geesteranus planting, and discloses a pleurotus geesteranus cultivar quantitative bagging mechanism which is characterized in that a discharging mechanism comprises a discharging barrel and a lifting rod, second sliding grooves are formed in the two side walls of the discharging barrel, second sliding blocks slide in the second sliding grooves, second springs are fixed to the tops of the second sliding blocks, and the second springs are fixed to the tops of the second sliding blocks; a second spring is fixed to the two ends of a lifting rod in a penetrating mode, the lifting rod is lifted upwards to drive two L-shaped rods to rotate towards the ends close to each other through a hinge and a movable base, a bag penetrates through two expansion plates and then is arranged on the outer wall of a discharging barrel in a sleeving mode, and the lifting rod descends through deformation recovery of the second spring. The lifting rod descends to drive the L-shaped rod to move towards the ends away from each other through the movement of the hinge and the movable seat, and the inner walls of the two sides of the bag are clamped in an expanding mode through the expansion plate, so that the bag can be stably arranged on the outer wall of the discharging barrel in a sleeving mode, and the problem that the bag falls off due to impact of quantitative seeds is solved.

The invention relates to the technical field of breakers and in particular to an iron core assembly of a small sized breaker. The iron core assembly includes a coil skeleton which has two end openings which assume a hollow cylindrical shape. One end opening of the coil skeleton is detachably in fixed connection to a static iron core. The iron core assembly also includes a first dynamic iron core which is disposed within a cavity of the coil skeleton and has one end penetrates the static iron core, a second dynamic iron core which abuts against one side of the first dynamic iron core distant away from the static iron core and has the other end abuts against the coil skeleton, a first spring which sleeves the first dynamic iron core and has one end abutted against the static iron core and the other end abutted against the first dynamic iron core, and a second spring which is arranged coaxial to the first spring and has one end abutted against the static iron core and the other end abutted against the second dynamic iron core. According to the invention, the technical solution lies in overcoming the problem of large electricity consumption of current products and providing an energy-saving iron core assembly of the small sized breaker.