523results about How to "Improve working environment" patented technology

The invention provides stamping equipment for automobile engine oil pan production, and belongs to the technical field of oil pan stamping equipment. Which comprises a stamping equipment body and is characterized in that a lower die and an upper die are installed on the stamping equipment body, a first supporting frame is installed on one side of the stamping equipment body, and a second supporting frame is installed on the other side of the stamping equipment body; an automobile oil pan material plate is placed on the top of the first supporting frame. By arranging the auxiliary feeding mechanism and the auxiliary discharging mechanism, the auxiliary feeding mechanism can be utilized, workers do not need to make direct contact with an automobile oil pan material plate, the automobile oil pan material plate can be rapidly and stably transferred to the position between the lower die and the upper die, and accurate alignment can be achieved after transferring, and the automobile oil pan material plate can be reliably placed on the top of the lower die; and compared with a traditional manual handheld plate feeding mode, the feeding device is safer and more reliable.

A multi-wire cutting machine achieving feeding action through movement of a cutting wire net is provided with a base, a machine frame, a workbench, a cutting feeding system, a wiring system and a control system, the base is horizontally arranged, the machine frame and the workbench are installed on the base, the cutting feeding system and the machine frame are assembled, and the wiring system is arranged on the base and the machine frame; the cutting feeding system comprises a lifting seat, a lifting motor and a lead screw nut transmission mechanism, the lifting motor is installed on the top of the rack, and the lifting seat is driven by the lead screw nut transmission mechanism to move up and down; the routing system comprises a cutting wire, a pay-off mechanism, a guide wheel, a tensioning mechanism, a grooved wheel and a take-up mechanism, the cutting wire bypasses the guide wheel and the tensioning mechanism which are arranged on the rack and is wound on the grooved wheel to form a cutting wire net, and the grooved wheel is mounted on the lifting seat. According to the multi-wire cutting device, cutting operation of large graphite material workpieces is achieved, and the purposes of simplifying the structure of multi-wire cutting equipment and improving the machining quality of the workpieces are achieved.

The application belongs to the technical field of spraying, and particularly relates to a spraying tool and a spraying device for cylindrical workpieces. The spraying tool comprises a frame body, a transmission chain, a plurality of chain wheels, a driving system and a plurality of columnar positioning structures. The plurality of chain wheels are rotationally arranged on the top of the frame body, the transmission chain is engaged with the plurality of chain wheels to form a closed conveying route, the driving system is drivingly connected with at least one chain wheel, and the plurality of columnar positioning structures are distributed along the upper side of the transmission chain. The columnar positioning structure is used for inserting and fixing the cylindrical workpiece in an upward positioning posture. The spraying tool realizes vertical insertion and continuous conveying of the cylindrical workpiece, effectively avoids the shaking problem caused by single-point suspension of the traditional suspension tool, and significantly reduces the risk of collision between the workpieces and the collision of the spray gun. Meanwhile, the workpiece is sprayed in a vertical posture, which is beneficial to uniform distribution of the paint and improves the consistency of the coating thickness.

The utility model relates to the technical field of bus ducts, and discloses a bus duct with a heat dissipation structure, which comprises a bus duct body, a top plate positioned at the top of the bus duct body and connecting modules positioned on two sides of the bus duct body, and one side, far away from the connecting modules, of the bus duct body is provided with a flow guide assembly in sliding connection with a chute. A through hole is formed in the side, close to the flow guide assembly, of the bus duct body, and a heat dissipation assembly is arranged on the side, away from the bus duct body, of the through hole. According to the bus duct with the heat dissipation structure, the sealing rubber strips are rapidly installed in the grooves, then the heat conduction plates and the through holes are arranged in an inserted connection mode, expansion buckles and positioning holes are matched to serve as matching components, rapid installation of the heat conduction plates and the bus duct body can be achieved, and then locking blocks and the expansion buckles serve as the matching components, so that the heat dissipation structure is formed. The heat conduction plate and the bus duct body can be quickly fixed, and the heat conduction plate and the bus duct body can be quickly disassembled when the heat dissipation assembly is cleaned in the later period.

The utility model embodiment provides a kind of integrated cyclone dust collection dry quenching boiler blowdown water temperature interlocking control system, including water collecting well, integrated cyclone dust collection dry quenching boiler, temperature acquisition device, cold water supplement device and high-temperature interlocking control device.Temperature acquisition device is set in water collecting well.Cold water supplement device includes cold water pipe and electric control valve, and the water outlet of cold water pipe is set in water collecting well, and electric control valve is set in cold water pipe.High-temperature interlocking control device is electrically connected with temperature acquisition device and electric control valve respectively, when the temperature value reached upper limit preset condition that temperature acquisition device collects, high-temperature interlocking control device opens electric control valve, when the temperature value reached lower limit preset condition that temperature acquisition device collects, high-temperature interlocking control device closes electric control valve.High-temperature interlocking control device can automatically carry out cold water supplement to water collecting well, can continuously maintain water temperature in water collecting well within reasonable range, and reduce steam accumulation, reduce equipment corrosion risk, improve working environment.

This utility model relates to a cooling and dust removal system for an overhead crane electrical compartment, belonging to the technical field of cooling and dust removal equipment. The technical solution of this utility model is as follows: the lower end of a PVC pipe (1) is connected to the atmosphere; a three-way filter (2) is sealed to the PVC pipe (1); the three-way filter (2), the serpentine condenser (3), and the suction fan (4) are connected sequentially through the PVC pipe (1); an internal venturi tube (5) is connected to the exhaust port of the suction fan (4); the internal venturi tube (5), the electrical compartment (6), and the exhaust fan (7) are connected sequentially; and a dust filtration device (8) is connected to the outlet of the exhaust fan (7) through the PVC pipe (1). The beneficial effects of this utility model are: improving the efficiency and quality of cooling the electrical components in the electrical compartment, ensuring the stability of the cooling process; at the same time, improving the working environment of the electrical compartment, reducing the dust contamination in the cold air and the dust in the exhaust heat, ensuring the stability of the production line control and the cleanliness of the site environment.

The utility model discloses a kind of tail cutting devices of plastic bottle processing, belong to tail cutting device technical field, it includes pedestal, the rear of the pedestal upper end face is equipped with mobile tail cutting structure, the center of the pedestal upper end face is equipped with clamping structure on two sides, the center of the pedestal upper end face is equipped with dust extraction structure in front, in addition, the utility model, by the combination of multiple buffer columns and compression springs of rectangular arrangement, can realize multiple point elastic contact according to the actual shape of plastic bottle, avoid the damage of bottle body caused by local stress concentration, the sliding fit design of sliding plate and clamping plate, so that rubber clamping pad can automatically adjust contact angle with bottle body contour, always keep maximum contact area in clamping process, solve the problem that fixed clamping surface is unstable to special-shaped bottle body clamping, the elastic coefficient of compression spring is optimized design, enough clamping force can be provided to ensure that bottle body does not shake when cutting, and overload protection can be realized through excessive compression when sudden external force, reduce equipment failure rate.

The utility model relates to garbage treatment technical field discloses a combined feeding system, including frame, the frame front end is provided with feeding mechanism, the frame inside fixedly connected with push mechanism, the frame inside is provided with the material collecting bin, the feeding mechanism includes two big arms connecting shaft, two big arms connecting shaftes all are rotatively connected in the outside of frame, the big arms connecting shaft is rotatively connected with hopper away from frame one end, the hopper outside rotatively connected with connecting rod axle, the connecting rod axle is rotatively connected in the outside of frame away from hopper one end, two big arms connecting shaftes between fixedly connected with the turnover pivot. In the utility model, the scheme does not need to build double -deck station house or deep foundation pit, and the frame is used as the basis support feeding mechanism, push mechanism and material collecting bin, after the feeding mechanism receives the material on the ground, the garbage is poured into the material collecting bin through lifting and overturning, and the push mechanism pushes the garbage to the compression box, and the construction cost and construction difficulty are greatly reduced.

The utility model provides a small line cutting device with gas protection cutting function, include: welding platform, welding platform top one end fixedly connected with first locating seat, welding platform top other end slidingly connected with second locating seat, the top of first locating seat and second locating seat all are rotatably connected with workpiece platform through steering assembly, the top of welding platform is welded with L type support. The utility model increases gas tank and high pressure gas nozzle, utilizes nitrogen protection, prevents workpiece oxidation, takes away heat and reduces heat influence area, improves working environment, cutting seat slides along cross track, satisfies various cutting demand, according to workpiece specification size, selects only first locating seat and carries out single -sided fixed, or first locating seat and second locating seat cooperate and fix, and conducting electricity clamp can fix circular or regular workpiece with high and low difference surface, workpiece platform can adjust angle in multiple directions with the help of steering assembly, satisfies complex profile or inclined plane workpiece cutting demand.

This application relates to the field of stone crusher technology, specifically disclosing a high-efficiency and energy-saving stone crusher crushing chamber structure, including a crushing chamber body, a power mechanism, and a return spring. The power mechanism includes a drive motor, belt, pulley, drive rod, eccentric wheel, and eccentric shaft. The power mechanism is arranged on the outer surface of the crushing chamber body, and the return spring is arranged in the inner cavity of the crushing chamber body. This invention uses protective components to buffer and intercept high-speed flying stone materials, preventing stone materials from flying out of the machine and effectively absorbing the impact energy of the stone materials. It can issue an alarm when a large-force splash occurs, facilitating maintenance by operators. The anti-clogging component can actively guide and assist the discharge of materials in the crushing chamber, disturbing the accumulated materials from different angles. Smooth discharge can also reduce the frequency of manual unclogging, improve the working environment, and enhance production safety and automation levels.

This utility model relates to the field of paint booth technology, specifically a fixing mechanism for an automotive paint booth. The mechanism includes a paint booth body with two safety doors hinged to its side walls. Two bases are installed on both sides of the paint booth body, arranged opposite each other. Two support frames are fixed to the top of each base, and connecting rods are fixed to the ends of the corresponding support frames. A first telescopic rod is fixed to the middle of each support frame, and a connecting shaft is hinged to the end of the first telescopic rod. A fixing plate is fixed to the end of the connecting shaft. Fixing the paint booth body to both sides with the fixing plate effectively reduces the overall structural instability caused by aging or damage after prolonged use, thereby increasing the overall stability of the paint booth body and reducing shaking or movement during long-term use, thus minimizing equipment damage caused by shaking.

The application discloses a kind of based on airflow sorting feed raw material multistage impurity removal equipment, belong to feed processing equipment technical field;The equipment includes rack, cloth feed structure, multistage crossflow sorting structure, gradient wind speed regulation structure, impurity collection mechanism and airflow purification structure;The cloth feed structure is used to uniform cloth and reduce raw material impact breakage;The multistage crossflow sorting structure realizes multistage step-by-step sorting, avoids impurity secondary mixing;The gradient wind speed regulation structure matches grading wind speed according to raw material characteristics, improves impurity removal precision;The impurity collection mechanism realizes light, medium, heavy impurity grading collection and rapid cleaning;The airflow purification structure carries out multistage processing to dust-containing waste gas, realizes standard discharge;The application solves the technical defects of low precision, high energy consumption, easy to block hole of traditional impurity removal equipment, can realize high-precision, low breakage, continuous high-efficiency impurity removal processing.

The invention discloses an intelligent agriculture integrated control method and system based on edge calculation, and belongs to the field of mechanical automation control, and the method comprises the steps: building a dynamic twin body, quantifying a response deficit between an expected vehicle body attitude angle change rate and an actual attitude angle change rate under a driving instruction, and defining the response deficit as an observation signal; a control target is redefined based on the observation signal, the control target is set to track a stable manifold, the stable manifold is defined by a preset observation signal amplitude boundary, and the state of the target agricultural machine is controlled to be maintained in the stable manifold; monitoring the steering jerk of the target agricultural machine; according to the method, dynamic twinborn quantitative response deficit characters are constructed, observation signals are defined, absolute trajectory accurate tracking is replaced with stable manifold as a control target, physical disturbance in a dynamic farmland environment is effectively compensated, agricultural machine path tracking errors are reduced, and the operation problems of seedling pressing, seedling damage and the like are reduced.

The utility model discloses an angle cutter for circuit board processing, which comprises a processing table and a collecting mechanism, and a cutting blade is arranged on the upper surface of the processing table through an adjustable movable frame; the collecting mechanism comprises a dust collecting box, a chipping drawing box, a fan, a dust suction pipeline, a dust suction cover and a filter screen, the dust collecting box and the fan are arranged on the bottom wall of the machining table, a discharging opening in the front side of the dust collecting box communicates with an air suction opening of the fan through a pipeline, and the chipping drawing box is slidably connected into an opening in the left side face of the dust collecting box; a filter screen is arranged in a mounting groove in the lower surface of the scrap suction box, a dust suction pipeline is arranged at a feeding port in the left side of the dust collection box, and a corrugated pipe with a steel wire is arranged in the middle of the dust suction pipeline. Manual cleaning is not needed, the working environment is improved, and the efficiency of corner cutting work is improved.

The utility model discloses an automatic smoke purifying and collecting device for metal processing and welding, which comprises a machine body, and a decomposition bin, an adsorption bin and a filtering bin which are uniformly arranged in the machine body through partition plates, and further comprises a smoke collecting component, the smoke collecting assembly comprises an L-shaped pipeline installed on the top of the machine body through a connecting base and a smoke sucking cover arranged at the bottom of one end of the L-shaped pipeline through a telescopic corrugated pipe. The filter box is arranged in the filter bin and below the exhaust hood; the adsorption box is arranged in the adsorption bin below the filtering bin; and the catalysis box is arranged in the decomposition bin below the adsorption bin. Through the arrangement of the L-shaped pipeline and the smoke sucking cover in the smoke collecting assembly, smoke generated in the welding process can be effectively sucked in, and diffusion of the smoke in the working environment is avoided. The servo motor drives the L-shaped pipeline to rotate, and flexible adjustment of the smoke suction hood is achieved through meshing of the driving gear and the gear ring.

This utility model provides a green silicon carbide calcination and salt washing equipment with dust prevention function, belonging to the technical field of green silicon carbide calcination and salt washing equipment. It includes an installation mechanism comprising a fixed frame, a drive power supply adapted to and installed on the side surface of the fixed frame, a mounting plate fixedly connected to the inner surface of the fixed frame, and a protective component fixedly installed on the surface of the mounting plate; and an operating mechanism comprising an operating tank fixedly installed in the center of the fixed frame, a stirring component adapted to and installed on the surface of the operating pipe, a feeding tank connected to the side wall of the stirring component, a feeding motor adapted to and installed on the side surface of the feeding tank, a fixing rod fixedly installed on the side surface of the operating tank, a lifting pipe fixedly connected to the end of the fixing rod, and a suction pump adapted to and installed at the end of the lifting pipe. This utility model effectively suppresses dust overflow and improves the working environment through the setting of the protective component and the sealed operating tank structure; the combined use of the insulation layer and the heating layer improves thermal energy utilization and reduces energy consumption.

The utility model provides a kind of adjustable shock-absorbing pedestal for axial flow fan, including two interval and mirror image symmetry setting fixture plate, two the fixture plate vertical setting, adjustable assembly is connected in the upper portion of two the fixture plate, two the fixture plate is moved under the driving of adjustable assembly Face or mutually diverging;Two the fixture plate is respectively connected with the flange of the both ends of axial flow fan.The utility model provides a kind of adjustable shock-absorbing pedestal for axial flow fan, can effectively control fan pedestal length, so that the error caused by equipment ontology manufacturing or pedestal manufacturing can be reduced, so that the situation that pedestal cannot match fan.

The application discloses an intelligent harvesting system for rye grass, belongs to the field of agricultural technology, and comprises an off-site identification module, a rye grass identification module, a data processing module, a rye grass harvesting module and a rye grass fertilization module; the off-site identification module is used for identifying and generating a planar image of a rye grass planting site to obtain the overall growth condition of the rye grass; the rye grass identification module is used for identifying the individual growth condition of the rye grass and environment information of the rye grass planting site; the data processing module is used for data processing to obtain a differentiated harvesting mode and a differentiated fertilization mode, and control the rye grass harvesting module to perform differentiated harvesting and control the rye grass fertilization module to perform differentiated fertilization. The application aims at the problem that the existing rye grass harvesting mode cannot accurately identify the growth condition of the rye grass, and different growth states of the rye grass cannot be subjected to differentiated treatment, and realizes the improvement of the yield and quality of the rye grass.

The application discloses a surface-defect-free high-purity oxygen-free copper wire manufacturing method based on continuous extrusion, relates to the field of non-ferrous metal precision machining technology, and directly adopts an up-drawing continuous casting billet to extrude a target specification wire rod in one step through continuous extrusion, so that a plurality of drawing processes and at least one intermediate annealing process in a traditional process are completely omitted, a process flow is compressed by more than 60%, a production cycle is significantly shortened, equipment investment, labor cost and energy consumption loss are reduced, wire rod production efficiency is greatly improved, large-scale production cost is greatly reduced, and the application has a strong industrialization advantage; the continuous extrusion process introduces large plastic deformation, can strongly break original as-cast coarse grains, and simultaneously compacts and eliminates internal defects such as pores and shrinkage porosity generated in the up-drawing continuous casting process, and improves wire rod density. Compared with a traditional processing method, the wire rod prepared by the application avoids problems such as annealing oxidation, uneven structure and performance fluctuation, and the elongation of a finished product is greater than or equal to 40%.

A calendering machine sucking device, it includes sucking box, the top opening of the sucking box is connected with cloth guide roller through bearing assembly, the outer surface of the cloth guide roller is fixed with spiral distributed brush, the top of the sucking box is connected with one end of first bellows through flange, the other end of the first bellows is communicated with the air inlet of fan, the air outlet of the fan is connected with the top end of second bellows through quick release joint, the bottom end of the second bellows is detachably connected with silk screen cylinder through clamp, the bottom of the silk screen cylinder extends to the inner cavity of water storage bucket, and the water body that submerges the bottom of the silk screen cylinder is filled in the water storage bucket, the device has novel structure, ingenious idea, increases fan, water storage bucket and silk screen cylinder and removes the impurities such as flower hair on the grey cloth, the device has good hair sucking effect, good dustproof effect, product quality is improved, and the situation of printing after printing is obviously reduced.

The utility model belongs to the technical field of machining centers, and particularly relates to an efficient chip removal device for a machining center, which comprises a base, supporting legs are fixedly connected to the end face of the base, a machining table top is fixedly connected to the upper end of the base, a machining assembly is fixedly connected to the right end of the base, and a fixing frame is fixedly connected to the upper end of the machining table top. The inner wall of the fixing frame is fixedly connected with a guide rod, the outer side of the guide rod is slidably sleeved with a sliding block, and the sliding block is slidably connected with the fixing frame. Through the arrangement of the motor, the winding wheel and other structures, a pull wire can be wound for use, then the mounting frame drives the magnetic roller to roll along the machining table top, scrap iron and the like left on the machining table top are automatically cleaned and eliminated for use, the subsequent good working environment is guaranteed, damage to cutters and the like is avoided, and the machining efficiency is improved. And under the action of the guide rod and the sliding block, the stable movement of the mounting frame can be ensured.

The utility model discloses a motor handling tool, including the mobile base of mobile wheel, be located the support mechanism on mobile base, one end be located the suspension arm on the support mechanism, be located the lifting mechanism on suspension arm, the lifting control of hook through lifting mechanism, the one end of suspension arm is inclined and stretches out to the front, the hook is hung in the front end of suspension arm through lifting mechanism, and the motor of waiting for handling is fixed through the hook, and then is hoisted up by lifting mechanism to move by pushing mobile base. Can save manpower, improve the work environment, and improve the operation safety.

The invention relates to the technical field of production of socket connectors of tunnel segments, in particular to tapping equipment for socket connectors of tunnel segments and a using method.The tapping equipment comprises a control box and a tapping turntable, a fence is fixedly connected to the upper end of the control box, a square chassis is fixedly mounted on the inner side of the fence through screws, and a detection assembly is embedded in the square chassis; the detection assembly comprises a pipe inserting assembly, a filter disc is installed on the inner side of the pipe inserting assembly, a small hole and a large hole are formed in the bottom end of the filter disc, a curved bar is welded to the bottom end of the filter disc, a sliding ball is arranged on the curved bar in a sliding mode, a moving assembly is installed in the filter disc, and the moving assembly comprises a clamping plate fixedly connected with the inner side wall of the filter disc. Abstract oil way faults are converted into visual mechanical displacement signals, whether oil supply of the two tapping machines is the same or not can be judged quickly and visually according to the backflow condition, and real-time monitoring and fault early warning of oil supply consistency of the double-station tapping machines are achieved.

The utility model discloses a yarn uniformity lifting mechanism, which relates to the technical field of yarn uniformity lifting, and comprises a base, a motor and a fixed disc are fixed on the base, a rotating disc is fixed on an output shaft of the motor, the rotating disc is arranged in the fixed disc, a rotating groove is arranged in the fixed disc, a lifting block is arranged in the rotating groove, and the lifting block is arranged in the rotating groove. A groove is formed in the fixing disc, a ball is arranged in the groove, the ball is in lap joint with the surface of the lifting block, a rotating shaft is fixed to the rear side face of the lifting block, the surface of the rotating shaft is sleeved with a bearing, a fixing block is fixed to the surface of the bearing, the fixing block is fixed to the fixing disc through a fixing bolt, and yarn penetrates through the lifting block. The lifting device is reasonable in design structure, the lifting block can be driven by the rotating disc to do circular motion, yarn is evenly stressed in all directions when moving, the situation of uneven stress is reduced, the yarn uniformity is remarkably improved, stable lifting block movement is matched with even acting force, and the yarn uniformity is guaranteed.

This utility model relates to the field of filtration technology and provides a circulating water filtration device, including: a housing and a connecting rod, and further including: a filter assembly disposed on the outer surface of the connecting rod for filtering circulating water, the filter assembly including: two T-shaped grooves, both formed on the outer surface of the connecting rod, the two T-shaped grooves being symmetrical; a filter screen box disposed on the filter assembly for intercepting impurities in the circulating water; circulating water flows into the upper guide box through the inlet pipe, the inside of the guide box is fixedly installed with a diverting plate to disperse the impact force of the flowing circulating water and prevent water splashing, a splash guard is fixedly installed at the upper end of the guide box to prevent circulating water from splashing out and improve the surrounding working environment, the circulating water flows through the guide box and passes through the filter screen box, the filter screen box can intercept and filter impurities in the circulating water, the bottom of the filter screen box is fixedly installed with a conical funnel to facilitate the flow of circulating water into the lower guide box.

The utility model discloses an alloy plate deburring device, which relates to the technical field of alloy plate deburring and comprises a base, a movable groove is arranged on the surface of the base, and a clamping mechanism and a deburring mechanism are arranged on the base. A third motor is started, the third motor drives a threaded column to rotate, the threaded column drives a movable frame to move so as to drive a grinding roller to move, a fourth motor drives the grinding roller to rotate so as to grind burrs on an alloy plate, an electric telescopic rod is started to drive a containing frame to be adjusted in a lifting mode, and the grinding roller is driven to move. And during grinding, a dust suction pump is started, the dust suction pump sucks floating dust generated during grinding into a dust collection box through a dust suction pipe and a dust suction cover, a space three-dimensional machining system is formed through cooperative control of a third motor, an electric telescopic rod and a fourth motor, various alloy plates can be treated, and the machining efficiency is improved. And the working environment can be improved through dust collection of the dust collection pump.

This invention belongs to the field of accessory painting, specifically relating to an accessory painting mold and its usage method. The accessory painting mold includes a housing with a cover plate connected to its top. A placement plate, a painting mechanism, and a rotating mechanism are installed on the side of the housing. The placement plate is rotatably connected to the inside of the housing for fixing the accessory. The painting mechanism includes a pump body and a spray plate fixedly installed inside the housing. The rotating mechanism includes a threaded post and a connecting plate. Compared with the prior art, this invention, through the cooperative connection between the cover plate and each component, allows the accessory to be painted in a sealed space, thereby effectively improving the working environment. It also allows for rapid connection and positioning between the connecting post and the placement plate, improving the loading and unloading efficiency of electronic components. Furthermore, it allows for rapid flipping of electronic components during the painting process, effectively improving painting efficiency.

The present application relates to the technical field of gas outburst chemical agent, in particular to a kind of methane esterification agent for preventing gas outburst and its preparation method and application method, and the methane esterification agent includes acid, I2, manganese-containing oxidizing agent and iron catalyst, relative to acid, the amount of I2 is 0.035-0.040 mol / L, the amount of manganese-containing oxidizing agent is 0.15-0.2 mol / L, and the amount of iron catalyst is 0.1-0.2 g / 100 mL;The iron catalyst is Fe-loaded MWCNTs, and the iron loading in the iron catalyst is 36-53% of the amount of MWCNTs in terms of mass content.The methane esterification agent of the present application can effectively esterify methane, and the formula and preparation method are simple and easy to operate, and the methane esterification agent has small corrosion hazard effect.

The utility model relates to an angle seat welding tool, which belongs to the technical field of welding tools and comprises a support frame fixed on the upper surface of a support table, a smoke extraction mechanism is arranged on the upper surface of the support frame, an L-shaped plate is fixed on the upper surface of the support table, and a positioning mechanism is arranged on the right side of the bottom wall of an inner cavity of the L-shaped plate. The smoke suction mechanism comprises a filter box fixed to the upper surface of the supporting frame, a draught fan is fixed to the right side of the upper surface of the supporting frame, and the air inlet end of the draught fan communicates with the right side of the filter box through a pipeline. According to the angle seat welding tool, smoke generated during welding is sucked into the filter frame through the flow guide frame, then filtered through the filter screen structure and discharged through the air outlet end of the fan, harmful substances in the welding smoke can be effectively filtered through the filter screen structure, the working environment of operators is improved, and the welding quality is improved. Meanwhile, pollution to the environment is reduced, the filter screen structure is easy to replace and dredge, and daily maintenance is facilitated.

The utility model relates to a bag cutting machine for an edible mushroom bag mouth, which comprises a rack and a conveying device centrally erected on the rack, and further comprises a bag lifting device which is arranged right above the conveying device in a lifting manner and is used for grabbing and secondarily lifting a mushroom bag conveyed by the conveying device; and the bag shearing mechanisms are movably erected between the bag lifting device and the conveying device and used for shearing bag openings after secondary lifting of the bag lifting device, and the moving directions of the adjacent bag shearing mechanisms are opposite. According to the edible mushroom bag opening cutting device, automatic operation of edible mushroom bag opening cutting is achieved, the bag cutting efficiency and quality are improved, the labor intensity of workers is reduced, it is guaranteed that mushroom bags are not damaged in the bag cutting process, and good conditions are created for growth of edible mushrooms.