40results about How to "Guaranteed vacuuming effect" patented technology

The utility model discloses an integrated vacuum system which is characterized in that the integrated vacuum system comprises a box body, a first vacuum pump and a second vacuum pump, the first vacuum pump and the second vacuum pump are arranged in the box body, the top of the second vacuum pump is connected with the bottom of the first vacuum pump through a mounting plate, and two sides of the box body are respectively provided with a cross beam. Two sides of the first vacuum pump are respectively connected with the cross beam through supporting legs; a connecting port is formed in the mounting plate, and an air inlet in the top of the second vacuum pump is communicated with an air outlet in the bottom of the first vacuum pump through the connecting port. According to the utility model, the convenience of installation and debugging is improved, and the vacuum effect is also improved.

The invention relates to the technical field of grain crushing, in particular to a feed processing crusher which comprises a crushing box and a support for supporting the crushing box, rotor hammers for crushing are arranged in the crushing box, and the feed processing crusher further comprises a dust extraction shell arranged on one side of the crushing box and used for removing dust, one side of the dust suction shell communicates with a through pipe communicating with the interior of the crushing box, a plurality of blades for air suction are arranged in the dust suction shell, and a driving assembly for driving the rotor hammer pieces and the blades to rotate is arranged at the top of the support; and the material ejecting piece is arranged in the crushing box and used for supporting materials, a transmission assembly for driving the material ejecting piece to move is arranged in the crushing box, and a material pushing assembly matched with the transmission assembly is arranged in the crushing box. And through the arrangement of the dust suction shell and the blades in the dust suction shell, a through pipe, a middle through pipe and a plurality of auxiliary dust suction pipes diverging along the center, the dust suction efficiency is greatly improved, and it is ensured that dust generated in the crushing process of materials needed by livestock raising can be sucked away.

The utility model relates to the technical field of concrete prefabricated part production equipment, and discloses a mold table cleaning machine and a concrete prefabricated part production line, the mold table cleaning machine comprises a rack and a cleaning mechanism which is arranged on the rack in a liftable mode, and the cleaning mechanism comprises a scraper knife and a first air blowing device. Specifically, the first air blowing device is provided with an air jet hole, the first air blowing device is suitable for blowing the mold table through the air jet hole, and the blowing range of the air jet hole covers the width direction of the mold table. And in the flowing direction of the mold table, the air jet hole is positioned at the downstream of the scraper knife. According to the mold table cleaning machine and the precast concrete component production line, the side mold position of the mold table can be cleaned, and the cleaning quality is improved.

The invention relates to the technical field of welding equipment, in particular to a welding machine with a fixing clamp, which comprises a support frame and a welding mechanism, and further comprises a workpiece fixing assembly, the workpiece fixing assembly comprises a placing frame and the fixing clamp, and the fixing clamp is used for fixing two workpieces at preset positions; the movable turnover assembly is installed on the supporting frame and used for driving the containing frame to move in the X-axis direction and turn over by 180 degrees, so that the containing frame can be switched between a first position with the front face facing upwards and a second position with the back face facing upwards; and the two telescopic limiting assemblies are installed on the supporting frame and located below the first position and the second position correspondingly, and the telescopic limiting assemblies can stretch out or retract in the vertical direction so as to conduct overturning limiting or release overturning limiting on the containing frame. Automatic overturning and double-face welding of the workpiece are achieved, the welding efficiency and the welding quality are improved, and the labor intensity and the safety risk are reduced.

The utility model provides a multifunctional double-cavity vacuum coating device which comprises a spraying chamber and a vacuum coating chamber, the vacuum coating chamber is arranged at the top of the spraying chamber, and the vacuum coating chamber is communicated with the spraying chamber through a through hole. A rotating frame is arranged in the spraying chamber, the rotating frame is connected into the spraying chamber through a guide column, the guide column is vertically connected into the spraying chamber, the rotating frame is in driving connection with a driving device, and the driving device drives the rotating frame to ascend into the vacuum coating chamber for vacuum coating. According to the utility model, priming paint coating, vacuum coating and finishing paint coating are integrated into one device, so that workpiece carrying is reduced, workpiece collision is avoided, the surface quality of workpieces is improved, and the production efficiency is improved. The spraying chamber and the vacuum coating chamber which are arranged up and down can reduce the occupied area of equipment, and the rotating frame keeps rotating at a constant speed in the spraying process, so that spraying is more uniform, and the quality of workpieces is improved.

The utility model relates to the technical field of seat angle adjuster machining, in particular to seat angle adjuster laser welding auxiliary clamping equipment which comprises an equipment table, a motor, a connecting ring, a dust hood, a screw rod, an exhaust pipe and a clamping mechanism, the motor is installed at the bottom of the equipment table, and the connecting ring is fixed to the upper surface of the equipment table; according to the auxiliary clamping equipment for laser welding of the seat angle adjustor, a core disc of the seat angle adjustor is effectively clamped, the core disc is controlled to rotate slowly in the welding process, the welding area is automatically adjusted, the welding efficiency is improved, and the welding quality is improved. Smoke dust generated by laser welding is effectively absorbed, the health problem caused by heavy metal smoke dust is reduced, in the clamping and welding process, the height of the clamping base can be adjusted, clamping is facilitated, meanwhile, the distance between the dust collection device and a welding area is effectively controlled, and therefore the dust collection effect is guaranteed.

This utility model belongs to the field of cast iron repair technology, specifically a device for repairing surface defects in cast iron pipes, including an arc spray cold welding machine body; a collection box is fixedly connected to the side wall of the arc spray cold welding machine body; an air pump is fixedly connected to the side wall of the collection box; a dust suction pipe is fixedly connected to one end of the air pump; metal dust generated during the repair process is sucked in through the dust suction pipe and sent into the collection box through the conveying pipe. The dust is intercepted and filtered by the filter screen in the collection box, and the purified air is discharged from the opening. The support rod and the base cooperate to form a stable support for the dust suction pipe, ensuring that the dust suction port is accurately aligned with the defect repair area. Through the cooperation of the air pump and the collection box, the dust is collected in real time during the repair process, avoiding the operator from inhaling harmful dust. The filter screen can effectively filter dust and prevent secondary pollution. The support structure of the base and the support rod improves the stability of the dust suction pipe and ensures the dust suction effect.

The present invention relates to a vacuum wheel rim assembly, comprising a wheel rim, spokes, spoke caps, a center hub and a sealing unit, wherein one end of the spoke is mounted on the center hub, and the other end is mounted on the wheel rim through the spoke caps, the wheel rim comprises an inner side facing the tire and an outer side facing the center hub, the sealing unit comprises a lining belt, a tightening belt and a sealing belt, the lining belt is sleeved on the wheel rim and the lining belt is attached to the inner side of the wheel rim, the sealing belt is sleeved on the wheel rim and the sealing belt is attached to the lining belt, the sealing belt is fixed to the inner side of the wheel rim through the tightening belt to seal the wheel rim, and a valve core is mounted on the wheel rim. The spokes of the present invention can protect the wheel rim and prevent its deformation, and at the same time, a simple and reliable sealing unit is adopted to ensure the vacuum performance of the wheel rim.

The utility model relates to the technical field of melamine tableware production, and discloses a melamine tableware edge grinding device which comprises a workbench, a plurality of supporting plates are fixedly connected to the rear portion of the top end of the workbench, dust suction devices are arranged at the top ends of the supporting plates, upper rotating rods are rotationally connected to the bottom sides of the front ends of the supporting plates, and lower rotating rods are rotationally connected to the bottom sides of the front ends of the supporting plates. A moving assembly is arranged on the outer wall of the middle end of the upper rotating rod, a moving ring is arranged on the outer wall of the bottom end of the upper rotating rod, a second telescopic rod is fixedly connected to the outer wall of the moving ring, a limiting ring is fixedly connected to the end, away from the moving ring, of the second telescopic rod, and a dust suction pipe is arranged on the inner circumference of the limiting ring. According to the edge grinding device, the height of the bottom end of the dust collection pipe is adjusted, so that the dust collection pipe is closer to dust and sweeps generated by edge grinding, the dust collection efficiency is improved, the dissipation of dust is reduced, the edge grinding requirements of different workpieces can be met, and the dust collection effect is ensured.

The utility model discloses a folding type handheld dust collector which structurally comprises a main machine and a dust barrel and further comprises a handle rotationally installed at the rear end of the main machine and a dust collection pipe independently arranged, and when the handheld dust collector is used, the handle rotates outwards relative to the main machine to be unfolded to each use angle; the dust barrel directly sucks dust through the dust suction port or the end part of the dust suction pipe is detachably inserted into the dust suction port to suck dust; when the handheld dust collector is stored, the dust collection pipe only needs to be detachably attached to the outer surface of the main machine, and the handle is rotated and folded on the dust collection pipe; obviously, as the dust collection pipe is connected with or detached from the dust collection opening in an inserted mode, dust collection and air leakage can be effectively prevented in the use process, and the reliability of the dust collection effect is guaranteed; meanwhile, the folded handle can be wrapped in the folded handle in the storage state, so that a user is prevented from being accidentally touched and dirtied; besides, a clamping tongue is further arranged in the handle, a plurality of gear grooves are correspondingly formed in the rear end of the main machine, and therefore the clamping tongue can be selectively clamped into the different gear grooves, and all using angles of the handle can be locked.

This utility model relates to the technical field of release film slitting machines, and discloses a release film slitting machine with dust removal function. It includes a machine body, with an island platform fixedly connected to the side wall of the machine body. The island platform is equipped with a dust removal mechanism and a cleaning mechanism. The dust removal mechanism includes a positioning rod fixedly connected to the inner wall of the machine body, and a roller rotatably connected to the outer wall of the positioning rod. A high-voltage electrostatic generator is fixedly connected to the inner wall of the island platform, and a wire is fixedly connected to the output end of the high-voltage electrostatic generator. A vacuum cleaner is fixedly connected to the outer wall of the island platform, and a horizontal pipe is fixedly connected to the input end of the vacuum cleaner. In this utility model, through the design of the dust removal mechanism, dust on the film surface can be accurately adsorbed and efficiently collected in real time during the release film slitting process, blocking the contamination path of dust and impurities to the release film from the source, ensuring the cleanliness of the release film after winding, and laying a reliable quality foundation for subsequent processing stages.

This invention discloses an integrated vacuum system, characterized by: a housing, a first vacuum pump and a second vacuum pump disposed within the housing; the top of the second vacuum pump is connected to the bottom of the first vacuum pump via a mounting plate; a crossbeam is provided on each side of the housing, and the two sides of the first vacuum pump are connected to the crossbeams via support feet; a connection port is provided on the mounting plate, and the air inlet at the top of the second vacuum pump is connected to the air outlet at the bottom of the first vacuum pump via the connection port. This invention improves the convenience of installation and debugging, and also improves the vacuum effect.

The present invention relates to the field of microelectronic packaging technology, and specifically to an anti-interference infrared detection chip packaging structure, comprising a tube shell and a cutting component, wherein the tube shell is connected to an exhaust pipe, and a sealing component is slidably provided inside the exhaust pipe, wherein the sealing component comprises a connecting plate, and two or more partition groups are provided on the connecting plate along the front-to-back direction, and each partition group comprises a partition baffle and a sealing platform, and the partition baffle is sealingly slidably connected to the inner wall of the exhaust pipe, and the sealing platform is located in front of the partition baffle, and there is a gap between the sealing platform and the inner wall of the exhaust pipe, and a sealing groove is provided behind the sealing platform and close to the connecting plate; the cutting component is used to cut and flatten a specific position of the exhaust pipe, and when the exhaust pipe is cut and flattened, the sealing component is pushed to move backward as a whole, so that the end of the exhaust pipe can be inserted into the sealing groove, so that the sealing platform and the end of the exhaust pipe form a seal, and multiple sealing can reduce costs.

This utility model discloses a vehicle vacuum cleaner. A fan operates, drawing air from the vacuum chamber through ventilation holes, creating negative pressure inside. External air is then drawn in through the suction pipe, which is aimed at the area to be cleaned. Dust or moisture enters the air intake chamber along with the air through the suction pipe. Under the action of the filter assembly, large dust particles are intercepted and fall into the dust collection bin, while fine dust particles and moisture pass through the filter assembly into the air outlet chamber and are discharged through the ventilation holes. During the cleaning process, most of the water and dust mixture falls directly into the dust collection bin under gravity, preventing clogging of the filter assembly and ensuring effective vacuuming. Furthermore, dust and other debris do not accumulate in the air intake chamber, and the unobstructed airflow between the fan and the suction pipe further guarantees efficient vacuuming.

The utility model belongs to the technical field of coffee machines, and particularly relates to a vacuumizing port of a coffee machine and the coffee machine, the coffee machine comprises a machine body, a vacuumizing device is arranged in the machine body, and the vacuumizing port comprises a through hole formed in the side portion of the machine body, a side wall annularly arranged on the periphery of the through hole and an ejector pin penetrating through the through hole and arranged on the inner side of the side wall. The ejector pin is provided with a second air exhaust channel used for being communicated with a vacuumizing device, the ejector pin is sleeved with a sealing sleeve, and a plurality of ribs arranged at intervals are annularly arranged on the sealing sleeve. The sealing sleeve arranged on the ejector pin in a sleeving mode is arranged in the vacuumizing port, and when the vacuumizing port is in butt joint with an air exhaust connector of a container to be vacuumized, the sealing sleeve is sleeved with the ejector pin; the sealing sleeve is tightly attached to the inner surface of the air exhaust connector, and the ribs are additionally arranged, so that the tightness between the vacuumizing port and the air exhaust connector is improved, the air tightness of the vacuumizing port and the air exhaust connector is improved, and the vacuumizing effect is ensured.

The invention belongs to the technical field of semiconductors, and discloses a coating device and method for sealing adjustment of wafers in a plurality of reaction units, and the coating device comprises a transmission cavity, a plurality of reaction cavities and two transfer sealing cavities. The transmission cavity comprises two transfer pieces, and the two transfer pieces can work at the same time to transfer different wafers; the number of the reaction cavities is larger than or equal to 3 and smaller than or equal to 8, the reaction cavities are used for deposition reaction of wafers in the reaction cavities, the multiple reaction cavities are connected with the transmission cavity, and the two transfer pieces can be in butt joint with the multiple reaction cavities to take and place the wafers; the two transfer sealing cavities are respectively connected with the transmission cavity, each transfer sealing cavity comprises a transfer assembly, each transfer assembly comprises a driving mechanism and a rotating mechanism, the driving mechanisms can drive the rotating mechanisms to rotate, and the rotating mechanisms are used for bearing wafers and driving the wafers to horizontally rotate; the two transfer pieces can be in butt joint with the two transfer sealing cavities to take and place the wafers, and the deposition efficiency is improved.

The utility model discloses automatic dust removal equipment for electrical engineering, which relates to the technical field of electrical engineering, and comprises a main frame, four sliding sleeves are movably sleeved in the main frame, a placing plate is fixedly connected among the four sliding sleeves, a dust collection barrel is placed at the top of the placing plate, a mounting cover is fixedly connected in the main frame, and the mounting cover is fixedly connected with the bottom of the main frame. A filter bin is fixedly connected to the top of the main frame, a dust suction fan is mounted at the top of the filter bin, a conveying pipe is fixedly connected to the exterior of the mounting cover and communicates with the mounting cover, a mounting pipe is fixedly connected to the end, away from the mounting cover, of the conveying pipe, and a dust collection cover is fixedly connected to the end, away from the conveying pipe, of the mounting pipe; a cleaning assembly is arranged in the mounting pipe, and a sealing assembly is arranged in the main frame. Hardened dust can be brushed through the cleaning assembly, and therefore the cleaning effect can be improved.

The present application relates to the technical field of household appliances, and discloses a clothes processing device and a control method thereof, which comprises a device main body, a fan, a dust collection device and a control module. The device main body is provided with a clothes processing cavity, a first air duct and a second air duct; the air outlet end of the fan is communicated with the air inlet of the clothes processing cavity, and the first air duct selectively leads the air outlet of the clothes processing cavity and the air inlet of the fan. The dust collection device is provided with a dust collection cavity, the dust collection cavity is communicated with the air inlet of the fan, and the second air duct selectively leads the air outlet of the clothes processing cavity and the dust collection cavity. The control module can control the first air duct and the second air duct to be selectively led according to the processing program of the clothes processing device, so that the dust collection cavity is deeply cleaned, the dust collection device does not need to be disassembled, the cleaning steps are simplified, the dust collection capacity of the dust collection device can be ensured, the drying capacity of the clothes processing device is guaranteed, the drying energy consumption caused by excessive dust accumulation is avoided, and the use experience is improved.

The utility model discloses a viscose defoaming steam spraying device which comprises a first condensation box assembly, a steam spraying assembly is fixedly connected to one side of the first condensation box assembly, a fixing frame is fixedly connected to the surface of the steam spraying assembly, and a second condensation box assembly is fixedly connected to one end of the steam spraying assembly. One end of the fixing frame is fixedly connected with one side of the first condensation box assembly, the other end of the fixing frame is fixedly connected with one side of the second condensation box assembly, the first condensation box assembly comprises a first condensation bin, and one side of the top of the first condensation bin is fixedly connected with a first pressure gauge. According to the design, the two-stage condensation devices and the one-stage steam spraying mode are adopted, vacuum is formed in the two two-stage condensation devices, steam is sprayed out through the steam spraying assembly, condensation can be increased through one steam spraying assembly, vacuum spraying is further reduced, the vacuum effect is guaranteed, meanwhile, the vacuum gas consumption is greatly reduced, and the steam consumption is further reduced.

The present application relates to the technical field of lead-acid battery manufacturing, and particularly relates to a lead-acid battery vacuumizing and acid-adding device, which comprises a conveying belt, an acid-adding tank, a three-way valve, an acid storage mechanism, an acid-adding pipeline, a filling mechanism, an adjusting mechanism, a vacuum system and a control system. The three-way valve core is provided with valve holes one, two and three, and a closed arc surface. The filling mechanism is provided with a sealing plunger, which blocks the filling needle head during vacuumizing and opens during acid injection. After the vacuum system vacuums the battery, the acid storage mechanism injects pre-stored quantitative acid into the battery under negative pressure. The lead-acid battery vacuumizing and acid-adding device realizes accurate control of acid quantity, elimination of bubbles and automatic continuous production, and has the advantages of high acid-adding precision, high efficiency and good battery consistency.

The utility model discloses a tire mold temperature measuring line take-up device which comprises a mold shell assembly and a cavity assembly arranged in the mold shell assembly, the mold shell assembly comprises a middle sleeve, a base and an upper cover, and a through hole is formed in the middle sleeve; the cavity assembly comprises a plurality of pattern blocks arranged in the circumferential direction and an arch-shaped base arranged on one side of the pattern blocks. The linear guide rail is slidably connected with a sliding seat, the sliding seat is rotatably connected with pulleys, a temperature measuring line of the temperature measuring element sequentially bypasses the pulleys on the sliding seat and is led out of the middle sleeve from the through hole, one side of the sliding seat is provided with a fixing rod, one side of the fixing rod is provided with a tension spring in a hanging mode, and the other end of the tension spring is connected with the arch-shaped seat through a tension spring support. According to the utility model, the problem that the temperature measuring wire is extruded and broken due to looseness in the prior art is solved, the problems of large pay-off resistance and clamping stagnation of the temperature measuring wire caused by crossing and overlapping when the temperature measuring wire is wound are solved, and the operation stability of the temperature measuring device in the tire vulcanization process is ensured.

The utility model discloses a derusting device for heating tube production, which comprises supporting legs, an operating table, a fixer, a moving groove, a sliding block, a connecting block, a transmission rod and a derusting device, and the tops of the supporting legs are fixedly connected with the bottom of the operating table. Through the arrangement of the dust collection box, the collection box and the fan, rust scraps and dust generated in the rust removal process can be sucked away and collected in time, the situation that waste scraps diffuse in air to cause environmental pollution is avoided, the working environment is improved, the physical health of operators is protected, and the steel pipe polishing device can be convenient for a user to fix a steel pipe, so that the service life of the steel pipe is prolonged. The problems that in the prior art, a device for assisting in cleaning waste chips is not arranged, rust chips and dust generated in the rust removal process can diffuse in air, the air quality in a workshop is reduced, the body health of operators can be affected, respiratory diseases can be caused by long-term inhalation of the dust, and therefore the body health of users can be affected are solved.

This invention belongs to the field of textile technology, specifically a down-collecting device and processing method for down processing. It includes a down-filling hopper, an adjusting unit at one end of which contains a down-washing unit, and a pressure-relief unit within the down-washing unit. The invention uses an electric telescopic rod to move a filter plate inside the down-filling hopper away from the three-phase motor until the down inside the hopper is compressed to a designated area on one end of the electronic scale. Simultaneously, a crank connecting rod rotates, and a pressure-relief plate, under the control of a panel, rotates at a certain angle within the filter plate. This allows for real-time control of the alignment between the filter holes in the pressure-relief plate and the mesh of the filter plate. During this process, a pressure-relief valve extracts gas from inside the down-filling hopper to the outside, ensuring a vacuum in the down-retention area, eliminating the influence of air buoyancy, reducing airflow interference, effectively avoiding static electricity, improving the accuracy of the electronic scale's weight measurement, and ultimately improving product quality control precision.

The utility model provides a deburring device for taper gasket processing relates to taper gasket production and processing field, the utility model discloses a grinding machine and polishing belt, the utility model discloses a cleaning device is set up, in the polishing process, the fan on the support is started, makes it to the inside of the duct support and dust cover inhale, makes its inside form negative pressure state, inhales the burr scrapes attached on the polishing belt into the dust cover, then by the duct support and the fan inside last by the export place and is discharged, enters the cloth bag and is collected, also starts the auxiliary mechanism and carries out further cleaning processing simultaneously, in this way can effectively remove the burr on the surface of taper gasket, guarantees the taper gasket surface precision to satisfy the assembly demand, can also avoid the polishing ability weakening caused by the roughness of polishing belt surface drop, reduces the situation that needs frequent shutdown replacement because of polishing belt failure, maintains production continuity, improves processing efficiency, reduces burr residue, surface scratch and secondary scratch quality problem such as simultaneously, reduces the unqualified product rate.

The utility model discloses a cleaning device, which belongs to the technical field of household appliances and comprises a machine body provided with a mounting cavity, a driving device and a dust suction port, a rolling brush is arranged in the mounting cavity and comprises a driving end and a follow-up end, the dust suction port is arranged on the wall of the mounting cavity, and a gap is reserved between the peripheral surface of the rolling brush and the wall of the mounting cavity. The installation cavity comprises a flow guide section extending from the driving end to the position close to the dust collection opening and a dust removal section extending from the end of the flow guide section to the follow-up end, the dust collection opening corresponds to the dust removal section, and the width, corresponding to the flow guide section and the dust removal section, of the gap is increased from the side of the driving end to the side of the follow-up end. The width change rate of the gap corresponding to the dust removal section is greater than that of the gap corresponding to the flow guide section. And the dust suction port is communicated with the part with the larger width of the gap, so that dirt entering the dust removal section from the flow guide section under the driving of the rolling brush can be smoothly sucked away through the dust suction port, the dirt is prevented from being stuck in the dust removal section, and the dust suction effect is ensured.

A mobile welding fume purifier with high-efficiency dust collection device, relating to the field of flue gas purification technology, includes a purifier body. A fixed tube is connected to the top of the purifier body, and a telescopic tube is connected to the upper end of the fixed tube. A suction tube is connected to the front end of the telescopic tube, and a dust collection hood is detachably connected to the front end of the dust collection tube. An angle adjustment mechanism is also provided at the top of the purifier body, and a clamping mechanism is provided at the top of the angle adjustment mechanism. The clamping mechanism is used to clamp the dust collection tube. This invention enables the adjustment of the dust collection hood angle through the angle adjustment mechanism, making it suitable for different working conditions. The clamping mechanism can clamp and fix the dust collection tube during adjustment, improving the accuracy of adjustment. During dust collection, the clamping mechanism can also support and fix the dust collection tube.

The application discloses an environment-friendly heat transfer printing device for green and environment-friendly printing, which comprises a horizontal rod, a processing roller and a protective cover, two supporting frames are arranged below the horizontal rod through fixing mechanisms, a moving groove is arranged on the outer wall of one side of the horizontal rod, a moving screw is rotatably arranged in the moving groove, the processing roller is connected with the moving screw through a moving mechanism, a driving motor is arranged above the horizontal rod, a welding ring is welded outside the driving motor, a movable groove is arranged on the upper end surface of the horizontal rod, and the welding ring is matched with the movable groove through a movable mechanism. The protective cover is arranged, a dust cover is arranged in the protective cover, a reciprocating screw is arranged and used in cooperation with the dust cover, the dust cover can be conveniently moved to absorb and treat the processing waste gas during processing, the dust cover has a certain moving range, the dust absorption effect is ensured, and the direct emission of the waste gas to the environment and the influence on the operating personnel are avoided.

The utility model provides a kind of material conveying energy-saving device on functional fertilizer energy-saving production line, it is related to fertilizer production conveying technical field, including conveying frame, the inner chamber of conveying frame is equipped with conveyor for conveying functional fertilizer, the top of conveying frame is fixedly connected with shielding frame, the left and right sides of the inner chamber of shielding frame are fixedly connected with shielding plate, the side of the top of shielding frame is equipped with the air extraction component for collecting fertilizer volatile heat energy, the other side of conveying frame bottom is equipped with cleaning assembly, the cleaning assembly is used to automatically clean the surface of conveyor belt and is handled, to guarantee conveying efficiency and reduce energy consumption.

The application discloses a coal conveying and unloading equipment with dustproof screening for coal preparation plant, which comprises a main body with a concave shape with an opening facing upwards, an installation groove is formed in the inner side wall of the main body, a back-shaped block is slidably connected to the inner side wall of the main body through the installation groove, a plurality of springs are fixedly connected between the back-shaped block and the inner bottom wall of the installation groove, and a screening mechanism is arranged in the main body. The screening mechanism comprises an air outlet groove, a transfer cavity, an installation hole and an air inlet groove, a first communication cavity and a driving cavity which are arranged in the inner side wall of one side of the main body and the inner side wall of the other side of the main body respectively. The application has the advantages that the feeding is more uniform and smooth when the coal blocks are screened, the blockage is avoided, the dust flying when the coal blocks are poured is prevented, the pollution to the environment and the influence on the health of the workers are avoided, the use state of the filter bag can be monitored automatically while the dust is removed, the filter bag can be replaced in time, and the filtering effect is ensured.

This utility model discloses a vacuum sealing device for packaging bags, comprising two hot-press sealing blocks arranged opposite each other and supported by a support block to maintain reverse movement; a heat source pipe disposed on the side of the hot-press sealing blocks and supplying a heating medium to the interior of the hot-press sealing blocks; and a vacuum pipe disposed between the two hot-press sealing blocks and continuously moving up and down; when the vacuum pipe descends to its lowest point, the bottom of the vacuum pipe is inserted into the opening of the packaging bag and positioned above the hot-press sealing blocks. This vacuum sealing device can be used on automatic packaging machines to facilitate automatic sealing and vacuuming of the packaging bag opening, thereby extending the storage time of the material.