411results about How to "Easy to block" patented technology

The invention discloses an RTO heat storage type incineration method waste gas treatment device which comprises a spraying adsorption box, one side of the spraying adsorption box is fixedly connected with a connecting pipe, the other end of the connecting pipe is fixedly connected with a gas inlet pipe, an impurity removal device is arranged on the inner side of the gas inlet pipe, a stirring assembly is arranged in an inner cavity of the spraying adsorption box, and the stirring assembly is fixedly connected with the spraying adsorption box. The waste gas treatment device has the advantages that through the arrangement of a filter plate, particle impurities contained in waste gas can be conveniently blocked at the front end of the filter plate, at the moment, airflow generated by the waste gas can conveniently drive a plurality of spiral blades to rotate, and therefore the waste gas treatment device is convenient to use. Furthermore, a rotating shaft can conveniently drive a cleaning brush to rotate and sweep at the front end of a filter plate, particle impurities on the outer side of the filter plate are removed, and at the moment, the particle impurities fall into a material collecting drawer under the action of gravity to be collected.

The utility model discloses a high-precision airflow classifier, and relates to the technical field of sorting. The high-precision airflow classifier comprises an airflow classifier shell and a classification device, the classification device comprises a feeding port, the feeding port is fixedly connected to the upper end of the airflow classifier shell and extends into the airflow classifier shell, the upper end of the feeding port is fixedly connected with a driving motor, and the output end of the driving motor is fixedly connected with a rotating shaft; the lower end of the rotating shaft is fixedly connected with a dispersing disc, the surface of the dispersing disc is fixedly connected with baffles, the surface of the dispersing disc is rotationally connected with blades, and resin raw material particles collide with the baffles and the blades through the centrifugal effect of rotation of the dispersing disc, so that the resin raw materials are scattered, and the resin raw materials are evenly distributed in the airflow classifier shell; the uniform distribution ensures that the resin raw materials can be subjected to uniform airflow and centrifugal force, so that the stability and precision of the grading process are improved, and the grading efficiency of the device is improved.

The invention discloses a transformer substation equipment identification method and system for image identification unmanned aerial vehicle route planning, and the method comprises the following operation steps: obtaining a layout plan of a transformer substation, and constructing a three-dimensional plan of transformer substation equipment for the layout plan of the transformer substation; generating an unmanned aerial vehicle flight route according to the three-dimensional plane graph; generating an unmanned aerial vehicle flight plan for the unmanned aerial vehicle flight route; when an unmanned aerial vehicle control system of the unmanned aerial vehicle flies according to the unmanned aerial vehicle flight plan, a transformer substation equipment image is collected according to the position of the transformer substation equipment in the three-dimensional planar graph; identifying the substation equipment from the substation equipment image and identifying a to-be-identified target object of the substation equipment at the target orientation; the to-be-identified target object is an electrical element on the substation equipment. According to the invention, the equipment image of the substation equipment is acquired through the unmanned aerial vehicle flight plan of the unmanned aerial vehicle, and the type of the substation equipment and the fault type when the fault occurs are further identified according to the equipment image.

The utility model relates to the technical field of screening devices, in particular to a coal mine screening device with a grading screening function, which comprises a mounting rack, a fixed frame is mounted on the inner side of the mounting rack, and the fixed frame is arranged on the inner side of the mounting rack; when coal is screened, a motor is started, under the action of a cam, the coal on the top of the upper fixing plate and the gravity of the coal, the two fixing plates are made to vibrate in a reciprocating mode, a first through hole and a second through hole are made to vibrate up and down in a reciprocating mode to screen the coal, and in the up-and-down reciprocating movement process of the first through hole and the second through hole, the coal screening efficiency is improved. By arranging the cleaning mechanism, the inner wall of the first through hole can be cleaned through a first cleaning ring, and the inner wall of the second through hole can be cleaned through a second cleaning ring, so that part of substances adhering to the inner walls of the first through hole and the second through hole can be scraped; and the risk that materials adhere to the inner walls of the first through holes and the inner walls of the second through holes to cause blockage is avoided, and therefore the coal screening effect is guaranteed.

The utility model relates to the technical field of clothes processing equipment, in particular to a drying system of drying equipment and the drying equipment, and aims to solve the problem that a filtering device of the existing drying equipment is poor in filtering effect. Therefore, the drying system comprises a drying air duct and a filtering device, a first inserting opening is formed in the drying air duct, and the filtering device comprises a first filter screen frame, a second filter screen frame, a first filter screen installed on the first filter screen frame and a second filter screen installed on the second filter screen frame. The first filter screen frame and the second filter screen frame penetrate through the first inserting opening and extend into the drying air channel, and the first filter screen frame is connected with the second filter screen frame in a pivoted mode. The air flow can be filtered twice through the first filter screen and the second filter screen, the filtering effect of the filtering device is improved, a user can conveniently detach the filtering device for cleaning by adopting an inserting mode, and the first filter screen frame and the second filter screen frame are pivotally connected so that the first filter screen and the second filter screen can be conveniently cleaned.

The utility model provides a cleaning robot, and relates to the technical field of cleaning equipment. The side brush module of the cleaning robot comprises a shell, a driver, a first side brush assembly connected with the driver and a second side brush assembly connected with the first side brush assembly. The friction force between the second side brush assembly and the shell is larger than the friction force between the second side brush assembly and the first side brush assembly. The side brush module has a gathering state and an unfolding state, when the side brush module is switched between the gathering state and the unfolding state, the driver is used for driving the first side brush assembly to rotate in the first direction or the second direction relative to the second side brush assembly, and at least in the unfolding state, the driver drives the first side brush assembly to rotate in the first direction or the second direction. The first side brush assembly is used for driving the second side brush assembly to synchronously rotate in the first direction. According to the cleaning robot, the side brush modules can be controlled to be in the unfolded state, the first side brush assembly and the second side brush assembly are used for efficiently cleaning the surface to be cleaned, and the side brush modules can also be controlled to be in the gathered state so that the cleaning robot can avoid obstacles.

The invention discloses electric leakage protection power line welding equipment which comprises a base and a movable shell, the movable shell slides in the horizontal direction under thrust, the inner surface of the movable shell is slidably connected with an extrusion plate, the bottom of the movable shell is slidably connected with a wire placement plate, and the bottom of the wire placement plate is fixedly connected with the base. A protection assembly is fixedly connected to the position, close to the wire placement plate, of the base, a welding assembly is slidably connected to the position, away from the wire placement plate, of the base, a processing assembly is rotatably connected to the side, close to the movable shell, of the welding assembly, and a mounting assembly is fixedly connected to the inner surface of the welding assembly. According to the electric leakage protection power line welding equipment, the alignment accuracy of a power line can be conveniently kept, the welding assembly is not prone to repeated welding when welding the power line, the processing assembly adsorbs and purifies peculiar smells generated during welding, and the situation that welding slag splashes around the equipment, and the cleaning difficulty is increased is prevented.

The utility model belongs to the technical field of food processing devices, and discloses a food processor convenient to use, which comprises a main machine with a support platform, a cup body and a drain valve, the drain valve comprises a valve body and a slurry nozzle, a valve core is arranged in the valve body, the slurry nozzle is communicated and matched with the valve core, the valve body is mounted on the cup body, the cup body is detachably mounted above the support platform, and the support platform is arranged on the support platform. The supporting platform is provided with a mounting opening, the supporting platform forms a slurry nozzle placing area surrounding the mounting opening, the slurry nozzle is detachably placed on the slurry nozzle placing area and can rotate along with the valve element, a slurry discharging pipe of the slurry nozzle downwards penetrates out of the mounting opening, and the food processor further comprises a first limiting part and a second limiting part which are used for limiting the slurry discharging pipe so as to limit the rotating angle of the slurry nozzle. The first limiting part and the second limiting part are both arranged on the lower side of the supporting platform in a protruding mode. Functional diversification and deep cleaning of the drain valve are achieved, and use is convenient. And when the slurry nozzle needs to be taken down, the upper surface of the supporting platform has a reasonable space to avoid fingers of a user, and the slurry nozzle is convenient to disassemble and assemble.

The utility model relates to the technical field of clothes processing equipment, in particular to a drying system of drying equipment and the drying equipment, and aims to solve the problem that a filtering device of the existing drying equipment is poor in filtering effect. Therefore, the drying system comprises the drying air channel and the filtering device, the filtering device comprises a first filter screen frame, a second filter screen frame, a first filter screen and a second filter screen, the first filter screen frame, the second filter screen frame, the first filter screen and the second filter screen extend into the drying air channel, airflow can be filtered twice through the first filter screen and the second filter screen, and the airflow can be filtered twice through the first filter screen and the second filter screen. The filter device is mounted in an inserting manner, so that a user can conveniently detach the filter device for cleaning, the first filter screen frame and the second filter screen frame are pivotally connected, so that the first filter screen and the second filter screen are conveniently cleaned, and the first filter screen frame is arranged in the accommodating cavity of the second filter screen frame; the first filter screen frame can be effectively prevented from automatically facing the second filter screen frame, so that mounting and dismounting are facilitated.

The invention relates to the technical field of laser cutting, in particular to laser cutting equipment for a drawer sliding rail and a control method thereof.The laser cutting equipment comprises a cutting platform, a laser head, a laser cutting device and a laser cutting device, the side wall of the cutting platform is transversely and slidably connected with a portal frame, and the laser head is transversely and slidably connected to the top of the portal frame through a sliding block; the plane displacement mechanism is used for driving the laser head to move on an XY plane; the two clamping pieces are symmetrically arranged at the top of the cutting platform and used for clamping a to-be-machined piece; material information of a workpiece to be machined can be accurately recognized through the arranged material recognition unit, a basis is provided for follow-up parameter adjustment, the control unit automatically adjusts cutting parameters of the laser head and the plane displacement mechanism according to the recognized material information, meanwhile, the operation state of the negative pressure assembly is adjusted, and the cutting efficiency is improved. The intelligent adjustment ensures that the cutting parameters and the negative pressure degree adapt to the material characteristics, and the cutting effect and efficiency are greatly improved.

The utility model relates to the technical field of water conservancy irrigation, and provides an environment-friendly water conservancy irrigation device which comprises a water collecting tank, a water collecting funnel is fixedly installed at the top of the water collecting tank, through grooves are formed in the two sides, close to the upper end, of the water collecting tank, and a filter screen plate is fixedly embedded in the position, close to the upper end, of the water collecting tank; a water collecting funnel can more conveniently collect rainwater, the rainwater is stored in a water collecting tank, a filter screen plate is fixedly embedded in the upper end of the interior of the water collecting tank, the filter screen plate can better block impurities in the rainwater, and therefore the cleanliness of the rainwater is improved, a servo motor is started to drive a threaded rod to rotate when the blocked impurities are too many, and the rainwater can be stored in the water collecting tank. The threaded rod rotates and drives the cleaning brush plate to clean impurities on the outer surface of the filter screen plate into the collecting hoppers on the two sides at regular intervals, so that the filtering effect of the filter screen plate can be improved, and the situation that rainwater cannot enter the water collecting tank and the impurities fall into the collecting hoppers due to excessive accumulation of the impurities can be prevented.

The invention provides material strength detection equipment for civil engineering mechanics experiments, and relates to the technical field of material strength detection. The material strength detection equipment for the civil engineering mechanics experiment comprises a detection table, a mounting frame is fixedly connected to the upper side of the detection table, a first hydraulic cylinder is fixedly connected to the upper side of the mounting frame, a pressing plate is fixedly connected to the output end of the lower side of the first hydraulic cylinder, and a protection unit and a detection unit are arranged on the upper side of the detection table; the protection unit comprises a protection frame, the protection frame is fixedly connected to the upper side of the detection table, and a rectangular hole is formed in the front side of the protection frame. By arranging the first hydraulic cylinder and the pressing plate, the concrete plate can be conveniently pressed down for strength detection, and by arranging the protective frame, the transparent blocking frame, the rotating rod, the toothed plate and the connecting plate, when the pressing plate presses down the concrete plate, the transparent blocking frame is closed to block splashed chippings, so that the safety during detection is improved.

The utility model discloses a gas drying device of an air compressor, which comprises a bottom plate, universal wheels are arranged on the lower side of the bottom plate, a supporting column is fixedly connected to the upper side of the bottom plate, an air compression dryer body is fixedly connected to the upper end of the supporting column, a fixing frame is fixedly connected to the outer side of the air compression dryer body, and the fixing frame is fixedly connected to the lower side of the bottom plate. A push plate is fixedly connected to the upper side of the right end of the bottom plate, a plurality of heat dissipation holes are formed in the lower side of the bottom plate, a stabilizing unit is arranged on the lower side of the bottom plate, a fan is fixedly connected to the left side of the fixing frame, the stabilizing unit comprises a sliding groove, and the sliding groove is formed in the lower side of the bottom plate. The inner sides of the left end and the right end of the sliding groove are slidably connected with sliding blocks. The heat dissipation holes, the fixing frame, the draught fan and the bottom plate are arranged, heat at the bottom of the air compression dryer body is conveniently dissipated, the baffles on the left side and the right side can conveniently block the heat dissipation holes through the first bidirectional screw, the sliding blocks and the baffles, and external water and dust are prevented from adhering to the bottom of the dryer.

The utility model discloses an oil and gas storage and transportation engineering container detection mechanism which comprises a semicircular plate, two sides of the semicircular plate are fixedly connected with composition plates, one side of the interior of the semicircular plate is fixedly provided with a detection box, one side of the detection box is provided with an installation threaded hole, and the installation threaded hole faces the inner wall of the semicircular plate. A combined hole is formed in the surface of one side of the semicircular plate, a combined screw is inserted into the combined hole, the combined screw is installed in the installation threaded hole in a threaded mode, the combined screw is connected to one side of the detection box, and supporting threaded rods are installed on the two sides of the semicircular plate in a threaded mode; a supporting block is rotationally connected to the end of the supporting threaded rod, a spherical groove is formed in one end of the supporting block, a supporting ball head is connected into the spherical groove in a rolling mode, the length can be adjusted in a threaded mode, the distance can be changed, the device adapts to pipelines with different diameters, the pipeline avoiding connecting position can be adjusted, adaptability is high, and adjustment and use are convenient.

The utility model belongs to the field of coal mine ventilation equipment, and provides a coal mine ventilation adjusting device. Comprising a bearing platform, a mounting frame welded to the upper end of the bearing platform, a first connecting block, a second connecting block, a first inserting hole formed in the first connecting block, a second inserting hole formed in the second connecting block, a fan body mounted between the first connecting block and the second connecting block, and a rectangular frame arranged on the front end face of the mounting frame, wherein the first connecting block and the second connecting block are welded to the inner side wall of the mounting frame; a second inserting rod is inserted into a second inserting hole, at the moment, a baffle is in a vertical state, a transverse air channel of the fan body can be blocked, the effect of adjusting the transverse air channel of the fan body can be achieved, after the second inserting rod is pulled out of the second inserting hole, a rectangular frame is rotated, at the moment, two connecting rods move in an installing frame, and the transverse air channel of the fan body can be adjusted. When the rectangular frame is adjusted to be in the vertical state, the two baffles are located above and below the front end face of the fan body correspondingly, and therefore a longitudinal air channel of the fan body can be blocked conveniently.

The invention discloses a same-frequency interference adaptive processing method applied to a shipborne navigation radar, and the method comprises the steps: dividing each echo into sub-segments with equal sample lengths, and obtaining the amplitude mean value measurement and the flatness value measurement of each sub-segment; secondly, obtaining the interference number of each echo, the starting point and the ending point of each interference, and obtaining the bottom noise of each echo; thirdly, obtaining statistical characteristics of interference quantity, interference length and interference intensity, and obtaining bottom noise statistical characteristics of echoes in a frequency domain; and finally, calculating a new waveform adjustment parameter according to the analysis of the interference characteristics. Through omnidirectional detection and analysis of time-frequency characteristics and statistical characteristics of same-frequency interference, the shipborne radar adaptively selects waveform parameters to realize active interference avoidance, the influence of interference is reduced, and a guarantee is provided for perception robustness of the shipborne radar under the condition of same-frequency interference.

The utility model provides a mattress with high waterproof performance, which belongs to the technical field of mattresses, and comprises a mattress body, a silica gel frame, water-absorbing cotton cloth, a magic tape rough surface and a magic tape hook surface, the silica gel frame is fixedly arranged on the outer side of the upper surface of the mattress body, the magic tape rough surface is sewed on the upper surface of the mattress body, and the water-absorbing cotton cloth is arranged on the water-absorbing cotton cloth. A magic tape hook surface is sewn at the bottom of the water-absorbing cotton cloth; according to the mattress, the water-absorbing cotton cloth is arranged and can absorb body fluid generated by gatism of a patient, the water-absorbing cotton cloth is adhered to the mattress body in a hook-and-loop fastener adhering mode, the water-absorbing cotton cloth can be conveniently taken out of the mattress body, and therefore the water-absorbing cotton cloth can be conveniently cleaned, and due to the arrangement of the silica gel frame, the water-absorbing cotton cloth is convenient to clean. The side face of the water-absorbing cotton cloth is conveniently blocked, the water-absorbing cotton cloth is prevented from being extruded after absorbing body fluid, the body fluid is prevented from falling to the bottom face of a ward from the periphery of the mattress body after being extruded from the side face of the water-absorbing cotton cloth, and sanitation of the ward is guaranteed.

The utility model relates to the technical field of moving devices for maintenance, and discloses a moving device for maintenance of an automobile part production machine tool, which comprises a bearing mechanism and an auxiliary mechanism, the auxiliary mechanism is movably connected to the surface of the bearing mechanism, the auxiliary mechanism comprises a driving unit and a block unit, the driving unit is rotatably connected to the bottom of the bearing mechanism, and the block unit is movably connected to the surface of the bearing mechanism. The block unit is movably connected to the top of the bearing mechanism, and the bearing mechanism is composed of a bottom plate, a trunk protection rod, a head protection rod, a headrest, a slot, a storage box and a grip. According to the moving device for maintenance of the automobile part production machine tool, an electric motor is arranged for auxiliary driving, a steering wheel is matched, maintenance personnel can flexibly use the moving device conveniently, a trunk protection rod and a head protection rod are arranged on the top, the situation that the maintenance personnel are damaged due to accidental falling is prevented, and multiple rotating connecting structures are arranged; and the blocking frame can be flexibly moved, dust can be conveniently blocked and prevented from entering eyes, and auxiliary use is facilitated.

The mobile phone antenna easy to disassemble and replace comprises a mobile phone body, an antenna and an antenna connector, the mobile phone connector is arranged on one side of the top of the interior of the mobile phone body, a slot is formed in one side of the top of the mobile phone body and corresponds to the mobile phone connector in a penetrating mode, the antenna is connected to the mobile phone connector in a pluggable mode, and the antenna is connected to the mobile phone connector in a pluggable mode. According to the utility model, the fixing groove is arranged at the outer side of the slot of the mobile phone main body and the antenna, the damping rotating shaft is arranged at the bottom of the fixing groove, the large rotating block is arranged at the top of the damping rotating shaft, and the sealing cover is arranged at the outer side of the large rotating block, so that water vapor and dust are blocked through the sealing cover after the antenna is detached and replaced and are prevented from entering the mobile phone main body; and in order to further block water vapor and dust, a second rubber sealing strip is arranged on the outer surface of the sealing cover, so that the sealing performance of the sealing cover is improved, and water vapor and dust can be better blocked.

The utility model relates to the field of building material detection equipment, and discloses building material tensile strength detection equipment which comprises a first U-shaped frame, the first U-shaped frame is fixed on the top surface of a U-shaped seat, a connecting plate is fixed on the rear side of the outer wall of the first U-shaped frame, a conveying belt is arranged in the U-shaped seat, and the conveying belt is fixed on the top surface of the U-shaped seat. And an infrared sensor is detachably arranged in the second U-shaped frame, a moving plate is fixed to one end of a telescopic rod of a first hydraulic push rod, second hydraulic push rods are fixed to the inner walls of two fixing holes correspondingly, and clamping plates are fixed to one ends of telescopic rods of two third hydraulic push rods correspondingly. According to the building material tensile strength detection device, a large number of building materials can be subjected to tensile detection one by one at a time by automatically supplementing and clamping the building materials, so that the time consumed by frequent manual operation is shortened, the detection is more convenient, the detection efficiency of the tensile strength of the building materials is improved, and the tensile strength detection device is more practical.

The utility model belongs to the technical field of workpiece detection devices, and particularly relates to a tension test device convenient to adjust, which comprises a body, a moving rod slidably connected to the surface of the body, a clamping assembly fixedly mounted on the surface of the moving rod, a limiting block connected to the bottom surface of a first sliding block, and a second sliding block slidably connected to the bottom surface of the limiting block. The surface of the second sliding block is transversely connected with a second bolt in a penetrating mode, the surface of the second bolt is transversely connected with a second limiting groove in a penetrating mode, the second limiting groove is formed in the surface of the limiting block, and the bottom surface of the second sliding block is connected with a clamping ring. Through the two groups of adjustable clamping assemblies oppositely arranged on the surface of the body, different clamping structures are used for clamping and fixing the material according to different shapes of the material to be tested, so that the aim of fixing the materials with different shapes by adjusting the clamping assemblies so as to facilitate detection is achieved.

The utility model provides a universal wheel lifting assembly of a sweeper and the sweeper, and relates to the technical field of electrical equipment. The universal wheel lifting assembly comprises a power mechanism and a universal wheel mechanism. The power mechanism is suitable for being installed in a machine shell of the sweeper, the power mechanism comprises a power pump and a power cylinder which are in driving connection, the power cylinder comprises a cylinder body and a piston located in the cylinder body, the universal wheel mechanism is connected with the piston, the power pump is used for driving the piston to move in the cylinder body, and the power pump is used for driving the piston to move in the cylinder body. Therefore, the universal wheel mechanism is driven to extend and retract relative to the machine shell. Through the arrangement, when the sweeper meets an obstacle, the universal wheel mechanism can be driven by the power mechanism to retract relative to the machine shell, the obstacle can be conveniently avoided, and the obstacle crossing function of the sweeper is achieved.

This utility model relates to the field of traditional Chinese medicine processing technology and discloses an intelligent steaming and cooking device for ginger and pinellia, including a heating device and a steaming and cooking barrel. A support plate is fixedly connected to the outer surface of the steaming and cooking barrel, a motor is fixedly connected to the top of the support plate, a rotating shaft is fixedly connected to the output end of the motor, a control frame is fixedly connected to the top of the rotating shaft, a connecting bracket is fixedly connected to the outer surface of the control frame, and a cylinder is fixedly connected to the top of the connecting bracket. This utility model has the following advantages and effects: When the operator needs to add mixed alum to the steaming and cooking ginger water, the motor drives the rotating shaft to rotate, which in turn rotates the control frame, causing it to move away from the steaming and cooking barrel to expose the opening. Then, water is added, and after the medicinal material device is placed in, the rotating shaft is rotated to rotate the control frame so that it aligns with the top of the steaming and cooking barrel. Then, the cylinder drives the air rod to control the sealing cap to press down, thereby closing the steaming and cooking barrel. The top of the sealing cap is provided with an exhaust hole.

The utility model relates to the technical field of traditional Chinese medicine dipping and soaking, and solves the problem of traditional Chinese medicine dipping and soaking dislocation caused by leg movement. The special traditional Chinese medicine dipping device comprises a supporting sleeve, the structural edge of the supporting sleeve is connected with binding belts which are symmetrical up and down, an adjusting belt which is used for being connected with the supporting sleeve and adapts to multi-angle binding is installed between the two binding belts, and the supporting sleeve comprises a first sleeve piece and a second sleeve piece; a telescopic compensation piece is arranged between the first sleeve piece and the second sleeve piece, the adjusting belt is connected to the first sleeve piece and the second sleeve piece, the adjusting belt comprises a first connecting belt connected with the first sleeve piece, a second connecting belt is connected to the second sleeve piece, and the second connecting belt is connected with the first connecting belt and the extending end point of the first connecting belt. The extending end points of the second connecting band and the first connecting band are connected with elastic bands connected to the bending positions of the legs of the user in a sleeving mode, and the two binding bands which are symmetrical up and down are connected with the first sleeve piece and the second sleeve piece respectively.

The utility model discloses a raw material grinder fan which comprises a shell, fan blades are arranged in the shell, a blocking filter screen is arranged on one side of the fan blades, and a first impurity filtering fine screen and a second impurity filtering fine screen are arranged on the left side and the right side of a cross filter plate respectively. Through the structure, the lower end of the blocking filter screen is fixedly connected with the fixing plate, the lower end of the fixing plate is fixedly connected with the first collecting box, and the first collecting groove is formed between the first collecting box and the shell, so that large impurities are conveniently blocked at the air inlet ends of the fan blades, and the fan blades are not prone to being damaged; a plurality of cross filter plates are uniformly and fixedly connected between the first impurity filter fine screen and the second impurity filter fine screen, and the lower ends of the first impurity filter fine screen and the second impurity filter fine screen are respectively provided with a second collecting box and a third collecting box, so that some fine substances can be prevented from entering the raw materials; the raw materials are not easily mixed with external impurities.

The utility model discloses a building roof structure, which belongs to the technical field of building roofs and comprises a building roof layer, a plurality of protective columns are arranged on the building roof layer, a plurality of protective barriers are arranged between every two adjacent protective columns, and two ends of each protective barrier are detachably mounted on the protective columns through connecting mechanisms. The connecting mechanism comprises a sleeve, the sleeve is arranged at one end of the protective handrail in a sleeving mode, a connecting groove is formed in one side wall of the protective column, the sleeve can be inserted into the inner wall of the connecting groove, a plurality of limiting blocks are arranged on the sleeve in a sliding mode, and a plurality of limiting grooves are formed in the inner wall of the connecting groove. And the multiple limiting blocks and the multiple limiting grooves are arranged in a one-to-one correspondence mode, the limiting blocks can be connected to the inner walls of the limiting grooves in an inserted mode, and a driving assembly used for driving the multiple limiting blocks to move is arranged in the sleeve. According to the utility model, the safety risk of roof personnel can be reduced.

This utility model provides an automatic sawing device for automotive castings, belonging to the field of casting riser sawing devices. It includes a machine room with a material drop chute at the bottom, within which a conveyor is installed; and a sawing assembly located on the inner rear side of the machine room. This utility model, through its separation shell, separation plate, and drive assembly, can collect falling structural parts and flowing cooling water during the sawing process of automotive castings. The cooling water is then discharged through a water trough on the separation plate and collected in a water collection tank through separation holes. After water separation, the structural parts fall after the separation plate is removed, enter the material drop chute, and are conveyed out of the machine room by the conveyor. This minimizes the problem of contaminating the conveyor when removing the sawn structure, improves the service life of the conveyor structure after long-term use, and reduces the frequency of conveyor belt cleaning.