51results about How to "Simple and applicable structure" patented technology

The invention discloses an efficient agricultural fertilizer stirring and crushing device. A feeding inlet is fixedly connected to the upper end of a device body, movable partition plates are arranged at the lower end of the feeding inlet and hinged to the device body, the middle of the lower portion of each movable partition plate is hinged to the upper end of a supporting rod, the lower end of each supporting rod is hinged to a threaded sliding block, a two-way threaded rod is connected to the threaded sliding blocks in a threaded and sleeved manner, and the left end of the threaded sliding block is fixedly connected with a semicircular gear; and the upper end and the lower end of each semicircular gear are each intermittently meshed with a pinion, the pinions at the upper ends are rotationally connected with the device body, the pinions at the lower ends are fixedly connected with a driven shaft, the left end of each pinion is fixedly connected with a big gear wheel, and the left end of the driven shaft is fixedly connected with a second bevel gear. According to the efficient agricultural fertilizer stirring and crushing device, a bevel gear set is used for driving the semicircular gears to rotate positively or negatively, and then the two-way threaded rod is driven to rotate positively or negatively along with the semicircular gears; and the two-way threaded rod drives the threaded sliding blocks to move left and right to control intermittent feeding of the movable partition plates at the same time of driving a stirring roller to achieve stirring crushing. The device is simple and practical in structure, and the crushing and stirring efficiency of fertilizers are greatly improved.

The invention discloses a municipal green belt trimming device. The lower end of a first motor is rotationally connected with a driving shaft. The middle of the driving shaft is fixedly connected with a fourth bevel gear. The bottom of the driving shaft is fixedly connected with a semicircular bevel gear. A fifth bevel gear is fixedly connected with a sleeve shaft which is connected with a driving shaft in a sliding mode. A first bevel gear is fixedly connected with the middle of a bidirectional threaded rod. A boss is arranged on the surface of the driving shaft. A concave groove is formed in the sleeve shaft. One end of the driving shaft is fixedly connected with a third bevel gear which is meshed and connected with a second bevel gear. The second bevel gear is fixedly connected with the driving shaft. According to the device, the bidirectional threaded rod is driven by the bevel gear group and the semicircular bevel gear to rotate forward and backward in a reciprocating mode so as to drive the driven shaft to move leftward and rightward in a reciprocating mode, and the driving shaft drives the driven shaft to rotate when the driven shaft is driven to move leftward and rightward in the reciprocating mode; the device is simple and applicable in structure, the green belt trimming range is greatly enlarged, work efficiency is improved, and labor is reduced.

The invention discloses an efficient feed smashing device. A fixed plate is fixedly connected to the left side of the upper end of a device body, a movable tooth plate externally sleeves the fixed plate, the left end of the movable tooth plate is in engaged connection to a free gear, and the movable tooth plate is in intermittent engaged to an incomplete gear; the incomplete gear is in intermittent engaged to the free gear; a first bevel gear is arranged at the lower end of a transmission gear, and is fixedly connected to the lower end of a driving shaft, a second bevel gear is fixedly connected to a first smashing roller, and the right end of the first smashing roller is in belt transmission to a driving worm; the lower end of the driving worm is in engaged connection to a worm wheel, the edge of the worm wheel is hinged to a connecting rod, and the end portion of the connecting rod is hinged to a sieve plate. By means of a matching action of the free gear, the incomplete gear and the movable tooth plate, the movable tooth plate reciprocates up and down to grind the feed movably, and the ground feed is then secondarily smashed by the first smashing roller and the second smashing roller and the smashed feed is finally vibrated in a reciprocating manner to fall off on the sieve plate. The device is simple and applicable in structure, the feed smashing quality and efficiency are improved greatly, and the labor force is saved.

The present invention relates to a semi-frame solar photovoltaic building structure, which comprises a substrate, a heat-insulating layer, a solar battery element, packaging material and a cover board. Wherein, the solar battery element is arranged on the packaging material of the substrate and positioned with the packaging material and the cover board in sequence. Here, wires for a positive electrode and a negative electrode are led. After the cover board is properly arranged, the whole structure is laminated and packaged vertically with an aluminum alloy frame. A horizontal part of the photovoltaic structure is fixed on a building beam through a mounting groove. The mounting groove is connected with the structure through industrial glue, thus ensuring horizontal packaging and connection. The present invention has the functions of heat insulation, water resistance, fire prevention and power generation, etc. and is directly arranged on a building roof, thus ensuring simple and applicable structure and facilitating integrated application of solar energy and building.

The invention discloses a municipal cement floor laying device. The left end of the transmission shaft is fixedly connected to the first bevel gear, and the left end of the first bevel gear is fixedly connected to the driving worm, the lower end of the driving worm meshes with the driven worm gear, and the lower end of the connecting rod is hinged to the connecting plate; The plate bolt is fixedly connected to the tamping block, the bearing at the end of the movable block is connected to the threaded rod in rotation, the threaded rod is threaded into the threaded sleeve, and the threaded sleeve is fixedly connected to the device body, and the end of the threaded rod is fixedly connected to the adjusting wheel; the residual gear is intermittently meshed The complete gear is connected, and a trowel is set at the lower end of the residual gear. The device drives the lower end of the connecting rod to reciprocate and move up and down through the transmission of worm gear and worm, and then drives the tamping block to tamp the ground, and the second motor drives the residual gear to intermittently mesh with the teeth on the upper end of the troweling plate and the complete gear to drive the troweling plate to move back and forth left and right to smooth the ground . The structure of the device is simple and applicable, which can realize the integration of cement laying and compaction, improve work efficiency and save labor.

The invention provides an input end assembly of a mechanical supercharger, which is applied to the field of mechanical superchargers. The input end assembly of the supercharger comprises a belt pulley (2). A front cover plate (20) and a bearing plate at the input end of the mechanical supercharger form a hollow cavity structure, an input shaft (3) and a driving shaft (12) are installed in a hollow cavity and are connected by a shaft coupling (15), a driving gear (13) is sleeved and installed on the driving shaft (12), a driven gear (14) is sleeved and installed on a driven shaft (16), the driving gear (13) and the driven gear (14) are engaged, the input shaft (3) is fixedly connected with the belt pulley (2), and a decorative cover (1) is installed on the other face of the belt pulley (2) which is connected with the input shaft (3). By the technical scheme, the coaxiality of the driving shaft and the input shaft when the supercharger is in different working conditions can be ensured, the running stability of the supercharger is enhanced, and the condition that the lubricating oil of the supercharger is free from maintenance perpetually is realized.

Bituminous mixture transfer car comprises hopper, material inlet helix, material tank body, material tank, first discharge device, moving system, second discharge device, second discharge drive system, hydraulic pressure system, electrical system, power system, driving cap, top, cleaning device, centralized lubricating system, exhaust emission system and discharge holding hopper. The invention improves the copper, material tank body, material tank, first discharge device, second discharge device, hydraulic pressure system, top, centralized lubricating system, and discharge holding hopper so as to increase the combination property index of the set. Meanwhile, the using effect and operating style gets a good improvement relative to the current bituminous mixture transfer car so as to improve the pavement spreading quality.

The invention discloses a snow removal device for municipal roads. A hydraulic cylinder is arranged at the lower end of a liquid conduit, the lower end of the hydraulic cylinder is hinged to the lower end of the device body, the right end of the hydraulic cylinder is slidably connected to a piston rod, the right end of the piston rod is hinged to the lower part of the bucket, and the hinge block is hinged to the upper part of the bucket; The bottom of the water storage tank is fixedly connected to the electric heater, and the upper part of the water storage tank is fixedly connected to the air intake pipe; the left side wall of the device body is provided with a No. 1 motor, the right end of the No. 1 motor is rotated and connected to a worm, and the worm is engaged and connected to the worm gear; the left end of the air pump is fixedly connected to the exhaust pipe, which discharges The lower end of the trachea is fixedly connected to the steam nozzle. The snow removal device initially removes snow through a shovel, and collects the snow on the filter wire mesh and heats it to melt it into liquid water, and then evaporates it into water vapor through an electric heater and sprays it to the ground for secondary fine snow removal to realize the circulation of water resources. use. The device is simple and applicable in structure and reasonable in design, greatly improves the snow removal effect on the road, and has high work efficiency, providing a strong guarantee for the travel safety of citizens.

The invention provides a structure of a channel for recovering in-situ leaching mother solution of rare earth ore. The structure is that a brick wall is built at the liquid recovering channel; gaps for water seepage are reserved in one surface of the brick wall, close to the mountain, and the other surface of the brick wall, back on to the mountain, is avoided water seepage; the bottom part of the channel is subjected to anti-seepage treatment; the middle lower layer of the channel is filled whit gravel layers or sand layers; the upper layer of the channel is filled with small bamboo poles; PVC water pipes are buried in the bottom part of the channel, and pores are formed in the PVC water pipes. Rare earth mother solutions seeping from the mountain can be effectively covered through a channel body of the liquid recovering channel, and that the recovery rate of the mother solutions is reduced due to the seepage of the mother solution in collecting can be prevented through a blocking wall at one side of the channel body. The optimized solution recovering work can reduce the potential risks of the side slope such as cutting of the slope toe due to the flushing of the running mother solution to the slope toe of the mountain and can also reach the purpose of fixing and stabilizing the slope to a certain extent, and thus the probability of landslide of the slope toe of the mountain can be greatly reduced.

An invisibility device which comprises color cameras be evenly distributed on the back surface of a three dimension support body. Camera lens of the color cameras are opposite to background images, a display screen is hanged in front of the three dimension support body, the bottom of the three dimension support body is connected with a base plate, and a rolling wheel is arranged below the base plate; at least one space is provided for containing objects in the inner part of the three dimension support body and a bracket is fixed on the inside surface of the three dimension support body and is connected with a signal transducer, an input terminal of the signal transducer is connected with a signal output terminal of the color camera, a video signal output terminal of the signal transducer is connected with a video signal input terminal of the display screen, the color cameras and the display screen are connected with a high capacity power source. The invisibility device realizes the ideal that a visible object becomes invisible in the visual field of people and disappears in the range of eyesight of people. The invisible device has a simple structure which can be widely applicable to important secret departments such as national defence department, military branch, national security council, information gathering department, anti-espionage institution , anti-terrorism institution, etc.

The invention relates to an automatic controller for opening and closing door, belonging to an automatic control device. It is mainly used to open and close door automatically. It mainly comprises remote control handle part and controller assembly. The remote control handle part comprises power switch, changeover switch, and remote control head. The controller assembly comprises fixed seat for motor, motor, signal receiver, driving gear, transmission gear, rail groove, trolley, connecting bar and joint hinge. The invention is provided with simple and practical structure, high automatic operation degree, opening and closing doors automatically and expediently.

The invention relates to a floating removable natural swimming pool, formed by floating cylinders 2, a support, and a stopping net 3. The swimming pool is characterized in that a group of interconnected PVC floating cylinders 2 connect to form a water channel of the swimming pool, and upper part pool walls of a closed swimming pool are formed. The upper part of a side stand column 6 of the swimming pool is connected with the floating cylinder 2 by threads. The lower part of the side stand column 6 is plugged on a bottom frame support 5. A swimming pool bottom board 4 is laid on the bottom frame support 5. The side frame of the swimming pool is provided with the stopping net 3. The swimming pool is novel in design, simple in structure, stable and safe in operation, convenient and fast in purchasing and installation, convenient in building and maintenance, and low in building and operation costs. The swimming pool can be integrally moved on water. The swimming pool is suitable to be built in development of tourism, vacationing, recuperating and intensified training campsites, and is suitable to be popularized and used in coast, urban area, harbor, lakeside, reservoir, and pond.

The invention relates to a shaped deburring cutter. The middle of a cutter body (1) is provided with a shaft hole (2), the circumference of one side of the disk-shaped cutter body (1) is provided with a cutter edge (4), and curved teeth (5) are uniformly distributed on the cutter edge (4). Since the curved teeth are uniformly distributed on the cutter edge, the structure is simple and applicable, and the shaped deburring cutter can be used for scraping , trimming and deburring tools and castings made of various materials, and can be widely applied in machining and mould production. The shaped deburring cutter not only can be conveniently rotated clockwise and counterclockwise to remove burrs, but also can process complex machined surfaces.

The invention provides a chamfering device for floor packaging boxes. The chamfering device comprises two supports arranged in parallel; multiple rollers are arranged between the supports, a conveyingbelt is arranged on the rollers, and the conveying belt is used for conveying the floor packaging boxes; a door-shaped machine frame is installed on the supports, and two air cylinders are installedon the door-shaped machine frame; and chamfering blocks are arranged at the bottom parts of the air cylinders, and the two chamfering blocks are in contact with two corner edges at the two sides of the top part of each of the floor packaging boxes. The chamfering device for the floor packaging boxes has the advantages of being relatively good in rigidity integrity, structure is simple and applicable, adjustment is convenient and rapid, chamfers are orderly and uniform, the appearance of packaging of products of a company is improved, the universal adaptability with the machine frame is good, adjusting is simple and convenient, the structure meets mechanical requirements, and the defects in an existing manual operation are overcome.

The invention discloses a high-frequency straight-seam welded pipe forming machine die quick changer provided with a main connector. The main connector is provided with a base and a support. The middle of the support is provided with a lower bearing seat, an upper bearing seat and a horizontal machine cap sequentially from bottom to top. The middle of each bearing is provided with a transmission shaft, the front ends of the two transmission shafts are connected to the rear ends of two telescopic transmissions, the rear ends of the transmission shafts are connected to the front ends of two corresponding horizontal shafts of a die set through a clutch. The middle of the horizontal machine cap is provided with an adjusting screw standing vertically, the adjusting screw is engaged with an adjusting worm, and the lower end is hinged to the upper bearing seat. The lower face of the base is provided with sliding rails, and the front end of the base is connected with the piston bar of a cylinder. The die quick changer is adaptable to changing dies of a high-frequency straight-seam welded pipe forming machine, and is simple in structure, convenient and fast to use, low in cost and high in efficiency.

The invention provides an energy-storing capacitance type self-propelled electric workover rig. A transmission mechanism, an electric control system and a hydraulic system are mounted on a chassis vehicle; the transmission mechanism comprises a power taker, a universal shaft and a gear box; the electric control system comprises an electric control cabinet, an energy-saving capacitor, a braking resistor, an energy-saving management device and a motor; the hydraulic system comprises a hydraulic control cabinet, a hydraulic system auxiliary motor, a hydraulic pump, a hydraulic motor and an oil tank; a winch is mounted on one side of the gear box; and a derrick unit is fixed on the chassis vehicle. The energy-storing capacitance type self-propelled electric workover rig has the advantages of low noise, zero pollution, energy-saving and environment-friendly properties, and high use ratio of energy.

The invention discloses a gum collector for eucommia ulmoides samara husks. The gum collector comprises a spindle pulley, a motor pulley, a motor, an outer cylinder, gum collecting plates, a spindle, a feed hopper, an upper bearing pedestal, a discharge port, machine legs, a lower bearing pedestal, rotating disks and pins. The outer cylinder is a long steel pipe. The upper bearing pedestal and the lower bearing pedestal are disposed at two ends of the outer cylinder respectively to provide rotor supporting. The spindle that is long is provided with a plurality of the evenly spaced rotating disks. Each of the rotating disks is provided with four uniform circular holes where the pins can be inserted. Linings are disposed among the gum collecting plates, and the linings and the gum collecting plates are integrated by threading the pins to form four groups of rotors. The gum collector has characteristics of simple and applicable structure, reliable operation, high work efficiency, environmental protection, low cost and strong feasibility, and can efficiently collect eucommia ulmoides gum in the eucommia ulmoides samara husks.

The invention discloses a seat stool in an elevator car. The handrail function can be achieved, and the seat function can further be achieved under the situation that the use area of the car is not affected. The elevator car is internally provided a pair of side walls and an inner wall, handrails are arranged on any wall or the two walls or the three walls, the elevator car further comprises a plate serving as the seat stool, and the handrails are hinged to the walls through the plate. The mode that a fixed seat is arranged in a car in the past is changed, the seat stool serving as the handrails is provided, and the seat stool is arranged in an overturning type structure. The seat stool is simple in structure and applicable, the car space is used reasonably, the taking demand of a specialhuman body can be met, and the original design integrity and the decorative effect of the car can be maintained; and a seat backrest can serve as a backrest and can block a gap generated after the seat is overturned, and a protective cover at the rear end of the seat achieves a good safety protection effect.

The invention discloses a wind power generation unit hub temperature control device which comprises a hub, a fairing and a plurality of blades connected with the hub, wherein each of the hub and the blades is provided with a chamber; ventilation driving equipment is mounted in the chamber of the hub; the chamber of at least one blade is provided with an air ducting device distributed in the lengthof the blade; the air inlet or the air outlet of the ventilation driving equipment communicates with one end of the air ducting device; and the other end of the air ducting device communicates with the chamber of the blade. The wind power generation unit hub temperature control device is simple in structure, applicable, high in reliability, low in cost and convenient to mount and maintain, controls the air temperature of the chamber of the hub, ensures that the wind power generation unit is prevented from external invasion while ensuring that the air temperature in the hub is within the rangeof the normal running environmental temperature of all components, meets the using requirement of the wind power generation unit under the condition of low cost and ensures the quality reliability ofthe wind power generation unit.

The invention relates to diagnostic equipment for fault points in an electrical control circuit, belonging to the technical field of circuit monitoring. The equipment comprises a group of relays connected to each control point terminal in parallel according to a certain sequence so as to form channels in multiple levels; the output end of the relay at each level is connected with a triode collector correspondingly and one input end of a conjunction gate at the same time; from the channel at the second level, the triode collector of each level is in reverse connection with the other input end of the conjunction gate at the previous level; except the final level, the emitter of the triode of each level is connected with the base of the triode at the next level; and the output of conjunction gates at different levels is connected with a digital display device via a coding circuit. As the equipment is connected on the control circuit terminal in parallel directly, an energy source of the control circuit is adopted directly to accurately reflect the operation condition of the control circuit, and especially indicates the fault position of the control circuit actually and timely. The circuit structure is simple and practicable, and has economic cost; and the fault of the circuit structure has no influence on the control circuit by means of the isolation of the relays.

The invention relates to an evaporator of a loop heat pipe and a preparation method of the evaporator. The evaporator comprises an outer cylindrical wall, a heat absorption face, an upper end cover, a capillary core and a vapor-liquid isolation barrel with openings in the two ends. A cavity structure is formed by the outer barrel wall, the heat absorption face and the upper end cover, the capillary core is attached to the heat absorption face, one end of the vapor-liquid isolation barrel is in contact with the surface of the capillary core, the capillary core is pressed on the heat absorption face, and the other end of the vapor-liquid isolation barrel is fixedly connected with the upper end cover; the cavity structure formed by the outer barrel wall, the heat absorption face and the upper end over is divided into two parts through the vapor-liquid isolation barrel, a vapor cavity is formed in the vapor-liquid isolation barrel, and a liquid cavity is formed outside the vapor-liquid isolation barrel. The evaporator is ingenious in structural design and excellent in performance, it is effectively guaranteed that vapor and liquid in the evaporator are separated, certain positive pressure and negative pressure can be borne, that is, a coupling face is not likely to deform, the machining method is simple and reliable, and volume production is convenient.

The invention discloses an automatic cleaning smoke exhaust ventilator. The automatic cleaning smoke exhaust ventilator comprises a smoke exhaust ventilator body; the smoke exhaust ventilator body mainly comprises a transmission shaft, a transmission bevel gear, residual gears, a bidirectional screw rod and cleaning plates; a driving motor is arranged at the upper end of the smoke exhaust ventilator body; the lower end of the driving motor is rotatably connected with the transmission shaft; the lower end of the transmission shaft is fixedly connected with each of the transmission bevel gear and an exhaust fan; the two ends of the transmission bevel gear are respectively engaged with a driven bevel gear; each driven bevel gear is fixedly connected with a driven shaft; each driven shaft is fixedly connected with a residual gear; the lower end of each residual gear is partially engaged with a large gear; the large gears are fixedly connected with the bidirectional screw rod; the cleaning plates are arranged at the lower end of the bidirectional screw rod; the lower ends of the cleaning plates are pressed against an air inlet plate. According to the smoke exhaust ventilator, the cleaning plates are driven to move left and right through discontinuous positive and negative rotation of the bidirectional screw rod, so that the exhaust fan is driven to rotate to exhaust while the cleaning plates are driven to move left and right to clean by one power source; a motor is fully utilized; electric resources is saved; the cleanness degree of the smoke exhaust ventilator is improved.

The invention discloses a multi-nozzle oppositely-arranged type gasifier nozzle mounting flange installing and welding method. The method includes the following steps: machining a nozzle mounting flange, selecting a gasifier assembly cylinder section where the nozzle mounting flange will be installed, installing an anti-deformation tool, machining a tube hole, where the nozzle mounting flange will be installed, in the assembly cylinder section, enabling the nozzle mounting flange to be matched with the assembly cylinder section, forming a fan-shaped groove with a big outside and a small inside between the nozzle mounting flange and the assembly cylinder section, enabling the inner bottom end of the fan-shaped groove to be in a semi-circular arc shape, enabling a location straight section to be arranged between the bottom and the inner wall of the assembly cylinder section, enabling the location straight section to have a 0.3-0.5mm fit clearance during assembling, adopting a 7-shaped connecting piece to connect and fix the nozzle mounting flange and the assembly cylinder section, detecting positional accuracy of four nozzles of the nozzle mounting flange, and welding the groove. By means of the mounting flange installing and welding method, the finally-obtained nozzle mounting flange is high in accuracy, good in quality and good in anti-deformation effect.

The invention discloses a foot earth contact detection mechanism suitable for a legged robot. The foot earth contact detection mechanism suitable for the legged robot is characterized in that an inner thread copper pillar (5) is installed on an A connection rod (1C) of a foot strut (1), a spring (4) sleeves a B connection rod (1D) of the foot strut (1), and is located between the inner thread copper pillar (5) and a fixing seat (3), an A copper pillar (6) and a B copper pillar (7) are installed on the fixing seat (3), the A copper pillar (6) is connected with a positive pole of a 5V power source, the B copper pillar (7) is connected with a signal detection input / output port, the fixing seat (3) is installed on the lower portion of a connection seat (2), and a B connection rod (1D) of the foot strut (1) passes through an A center through hole of the connection seat (2), and then is connected with a nut (8) through a thread. The foot earth contact detection mechanism suitable for the legged robot achieves a contact switch function through electric signal connections and disconnections of the A copper pillar (6), the B copper pillar (7) and the inner thread copper pillar (5) , and thereby detects earth contact and lifting status of a foot of the legged robot in real time.

The invention discloses an eucommia winged fruit shell gum grinding machine comprising a lower machine body, a rotor, a discharge port, a feeding port, an upper machine body, a triangular belt, a motor, a motor pulley, a rotor pulley, and a pedestal. The machine has a structural form with a centralized rotor and an upper cap and a lower cap. The feeding port and the discharge port are arranged on the upper machine body. The pedestal and the bearing seat of the rotor are arranged on the lower machine body. The upper and lower machine bodies are connected by using a bolt, such that a cylindrical cavity is formed. The rotor is arranged in the cavity, and is fixed on both sides of the lower machine body by the bearing seat. The motor drives the rotor pulley through the motor pulley and the triangular belt, such that the rotor rotates flexibly. The machine has the advantages of simple and applicable structure, reliable operation, low cost, and high feasibility. The machine is green and environment-friendly. With the machine, eucommia gum in eucommia winged fruit shell can be effectively enriched.

The invention discloses a multi-nozzle oppositely-arranged type gasifier nozzle mounting flange installing and welding method. The method includes the following steps: machining a nozzle mounting flange, selecting a gasifier assembly cylinder section where the nozzle mounting flange will be installed, installing an anti-deformation tool, machining a tube hole, where the nozzle mounting flange will be installed, in the assembly cylinder section, enabling the nozzle mounting flange to be matched with the assembly cylinder section, forming a fan-shaped groove with a big outside and a small inside between the nozzle mounting flange and the assembly cylinder section, enabling the inner bottom end of the fan-shaped groove to be in a semi-circular arc shape, enabling a location straight section to be arranged between the bottom and the inner wall of the assembly cylinder section, enabling the location straight section to have a 0.3-0.5mm fit clearance during assembling, adopting a 7-shaped connecting piece to connect and fix the nozzle mounting flange and the assembly cylinder section, detecting positional accuracy of four nozzles of the nozzle mounting flange, and welding the groove. By means of the mounting flange installing and welding method, the finally-obtained nozzle mounting flange is high in accuracy, good in quality and good in anti-deformation effect.

A quickly connected flange is composed of flange, the sealing ring with internal limiting barrel and external pressure baffle ring, and flat washer. Its advantages are high connection strength and simple structure.

The invention relates to a method for manufacturing sewage intake equipment with a preliminary filtering function, which comprises the following steps: firstly, arranging a squirrel-cage-shaped filtering structure layer at the outside of the equipment; then, connecting an internal water intake sieve tube and a sewage intake pipeline; and finally, arranging a framework on the squirrel-cage-shaped filtering structure layer. The invention is used for carrying out preliminary filtering processing for sewage to prevent the blockage of pipelines, valves, water pumps, heat exchangers or heat pump unit equipment. The sewage intake equipment has the advantages of simple and applicable structure, easy manufacture and installation, convenient use and management as well as preliminary filtering and back flushing functions.

The invention relates to a coal seam hydraulic reaming drilling tool, which includes a drilling tool and a drill pipe joint, a hydraulic pump with a hydraulic pump connection end and a rack in the casing of the drilling tool, and the driving gear transmission on the rack and the hollow driving gear bearing. Link, after the hollow driving gear bearing passes through the upper shaft hole of the thick steel frame, the outside of the drilling tool is fixed by the nozzle fixing bracket on the hollow driving gear bearing, and the inside of the drilling tool is fixed on the thick steel frame by the hollow driving gear bearing positioning piece , the shaft hole on the thick steel frame is connected with the sliding bearing of the hollow driving gear bearing, the connecting end of the hydraulic pump is connected with the connecting end of the hollow driving gear bearing with a high-pressure water pipe, the nozzle fixing bracket on the hollow driving gear bearing has a fixing hole for the nozzle rod, and the hydraulic pump There is a spring to pull the rack inside, and a rack limiter is set inside the drilling tool shell to limit the forward position of the rack. The hole reaming process is also disclosed. When the spring fails, the drill rod is pulled out to realize successive hole reaming with different radii, increasing the pressure relief area and drainage range of the drilling gas.