49results about How to "Jet far" patented technology

The invention discloses a water rotating gas direct spraying type pole plate spraying washing device which comprises an outer pipe and a center pipe. The outer pipe is connected with a water tank. The center pipe is connected with a compressed air storage tank. The outer pipe and the center pipe are of a jacket type structure. A gas spraying port is formed in the front end of the center pipe. Compressed air in the center pipe is directly sprayed into a Rafal curved face expansion chamber from the rear portion to the front portion; the conical part of the center pipe is coaxially embedded in the outer pipe in a non-full-contact manner; the inner flow guiding cross section of the outer pipe has a changing process where shrinkage and magnification are sequentially conducted; pressurizing water flows forwards in a conical-cylinder-shaped throttling channel between the outer pipe and the center pipe and enters the Rafal curved face expansion chamber in a rotary spraying manner through a spiral flow channel between a cyclone device and the center pipe; gas and water mixed gas is conveyed to a spraying pipe in front of the gas spraying port due to the Rafal effect; and finally, the mixed gas is jetted out of a spraying port in front of the spraying pipe at high speed. The water rotating gas direct spraying type pole plate spraying washing device is simple in structure, reliable, ingenious and low in cost, the kinetic energy of compressed air can promote gas and liquid to be homogenized and converted into jetting flying power most effectively, and efficient and high-quality electrolysis pole plate spraying washing operation is achieved.

The invention discloses a puncture outfit, which comprises a puncture rod, a sheath component and an exhaust port. The puncture rod is used for forming a through hole, and the sheath component sleevesthe outer side of the puncture rod and serves as a surgical channel. The sheath component comprises an inner tube and an outer tube, the outer tube sleeves the outer side of the inner tube to form aninterlayer, a thin end of the inner tube is provided with an opening, and the interlayer is internally provided with a smoke exhaust channel through which the opening and the vent port are communicated. Smoke is exhausted out of a surgical space when gas enters the surgical space, so that lens blurring caused by smoke can be eliminated, influences on sight of medical personnel are avoided, and surgical efficiency is improved. In addition, an air sac seal structure is delicate in design and reliable in sealing of surgical instruments in different sizes, and safety in product clinical application is achieved.

The invention discloses a fire extinguishing device, which belongs to the technical field of protective fire extinguishing equipment. A fire extinguishing device, comprising an installation box, an electric telescopic rod, a working box, a water pump, a motor and a water tank. The output end of the telescopic rod is fixedly connected with a sliding table, and the sliding table is connected with a lifting rail and a push-fit mechanism. The outer wall of the installation box is connected with an extension rail corresponding to the lifting rail. Roller, the bottom of the working box is rotatably connected with the first auxiliary wheel, and the rolling wheel is frictionally connected with the first auxiliary wheel. Both the rolling wheel and the first auxiliary wheel are rollingly connected on the lifting rail and the extension rail. It is connected with a water spray mechanism; the fire extinguishing track of the present invention is flexible and has a wide range, can kill flames from the root, and has strong ability to protect seedlings.

The invention discloses a cyclone water direct injection type washing device. An outer tube is connected with a compressed air tank, and a center tube is connected with a water tank; the outer tube and the center tube are of jacket type structures, a liquid spraying opening is formed in the front end of the center tube, and liquid in the center tube enters a Lafare hook face expansion chamber from back to front; a conic portion of the center tube is coaxially embedded into the outer tube in a non-full-contact manner, a flow guide cross section in the outer tube has the change process of amplifying after shrinking, compressed air forwards flows in a conic-cylinder-shaped throttle channel between the outer tube and the center tube and enters the Lafare hook face expansion chamber through a spiral runner between a swirler and the center tube in a spiral spraying manner, and the Lafare effect enables an air-water mixer to be conveyed to a spraying tube in front of a liquid spraying opening; and finally, the compressed air is jetted out at a high speed from the spraying opening in front of the spraying tube. The cyclone water direct injection type washing device is simple in structure, reliable, ingenious and low in cost; compressed air potential energy can be effectively converted into jetting flight power; and in addition, air and liquid mixing is quite uniform, and efficient, high-quality and ultralow-water-amount impact spraying operation is achieved.

The invention discloses a jet device having a storage chamber. The jet device includes a nozzle, a jet pipe, a valve core and an elastic member. The nozzle is provided with a nozzle chamber and a nozzle mouth communicated therewith. A valve base is arranged on an internal wall of the nozzle chamber. A front end of the jet pipe is communicated with and sealedly connected to a back end of the nozzle, wherein the front end is towards to a jetting direction. A back end of a valve core body of the valve core is provided with two or more than two connecting wings which are vertical to an axial line of the valve core. Channels which allow liquid to enter into the nozzle chamber through the jet pipe are formed between the connecting wings. Under the situation that the valve core is matched with the valve base, the storage chamber is formed between the front ends of the connecting wings and the valve base. The size, in the axial line direction of the valve core, of the storage chamber is 1-3 times of an internal diameter of the nozzle chamber. The elastic member applies a force to a connecting pipe, wherein the force enables the connecting pipe to move towards the valve base. The jet device overcomes a defect that a jet device in the prior art is liable to cause flow breaking or reduction of a jet distance when the jet device in the prior art is used in point jet, especially for jetting a liquid in high viscosity. The invention provides the jet device having the storage chamber. By means of the jet device, a liquid flow is sufficient during point jet so that flow breaking is avoided.

The invention discloses a water-swirl gas direct injection type pesticide spraying device. An outer tube is connected with a water tank; a central tube is connected with a compressed air storage tank; the outer tube and the central tube are jacket type structures; the front end of the central tube is provided with a gas spraying hole; compressed air in the central tube is directly sprayed into a Laval curved surface expansion chamber from rear to front; a tapered part of the central tube is coaxially embedded into the outer tube in a non-full-contact manner; an inner guide cross-section of the outer tube has a changing process of reducing and then enlarging; pressurized water flows forwards in a tapered-barrel-shaped throttling channel between the outer tube and the central tube, and is sprayed into the Laval curved surface expansion chamber in a rotary manner by virtue of a spiral runner between a swirler and the central tube; by virtue of the Laval effect, a gas-water mixture is conveyed towards a spraying tube; pesticides are added through a dosing cup; and the mixture is uniformly sprayed out at a high speed from a spraying hole in front of the spraying tube. The water-swirl gas direct injection type pesticide spraying device is simple, reliable and delicate in structure, low in cost, capable of using potential energy of the compressed air to promote gas-liquid homogenization most effectively and converting the potential energy into jetting and flying power, so that most efficient and high-quality pesticide spraying operation is realized.

The invention relates to the field of agricultural irrigation, in particular to a fully-automatic spraying agricultural irrigation device which comprises a water storage chamber and a control component. The water storage chamber comprises a main water storage chamber, an auxiliary water storage chamber, a water inlet valve, a closing cover, an air inlet valve, a partition plate, a closing plate and a water sprinkling device, the auxiliary water storage chamber is used for receiving rainwater and conveying the rainwater into the main water storage chamber through a water inlet valve, the closing cover is sealed on the upper portion of the main water storage chamber and used for storing the air, the closing plate is used for controlling water in the main water storage chamber to duly enter the water sprinkling device, the control component comprises a shell, a support, a sliding cylinder, a clamping block, a spring, an ejector column, an air bag and an air storage chamber, and the control component is used for controlling the state of the closing plate and further controlling whether water is sprinkled or not. The device can store the rainwater and automatically release the rainwaterin strong sunshine, the rainwater is under pressure when being released by the aid of inflated air, so that the rainwater can be sprinkled far, and the device is better in irrigation effect, simple in structure and environmentally friendly and saves energy.

The invention belongs to the technical field of water quality oxygenation, particularly relates to a high-pressure spraying water quality oxygenation device and aims to overcome the defect that damageis caused to an existing water pump due to the fact that the water pump is prone to sucking in sundries because no protection device is arranged for a water incoming pipe for water extraction of thewater pump and the defect that the water pump has poor oxygenation effect on large-area water areas due to the fact that spraying radius which is fixed cannot be adjusted according needs. The device comprises a water tank, two supports are placed in the water tank, a same supporting plate is fixedly mounted at the top ends of the two supports, a spraying pipe and a water pump are fixedly mounted on the top side of the supporting plate, a filter tank is fixedly mounted on one sides of the supports, and one side of the filter tank is open. When the water pump extracts water, impurities in the water are filtered by a filtering plate, so that damage to the water pump caused by the fact that the impurities in the water are sucked into the water pump is avoided; the filtering plate can be cleaned automatically when being blocked, and spraying area can be adjusted reasonably according to water area, so that oxygen dissolving efficiency is improved, and using needs are met.

The invention discloses a feeder for aquaculture. The feeder comprises a body base, wherein the outer wall of the upper portion of the body base is provided with a limiting table, a placement frame isarranged above the limiting table, the placement frame is internally provided with a storage box, a first feeding frame and a handrailing are arranged above the placement frame, the first feeding frame is composed of a storage chamber and feeding cavity, and a blocking cover is arranged above the first feeding frame. The feeder for the aquaculture has the advantages that the feeder is provided with the body base, the bottom of the placement frame is provided with universal self-locking wheels, when a user performs feeding, if the feeder needs to be moved, the placement frame can be pushed, sothat the placement frame slides on the limiting table on the body base, when the placement frame slides, the movement save more labor through the universal self-locking wheels, multi-user operation is not needed, thereby avoiding the situation of the waste of manpower resources, the practicability is high, the position of the placement frame is restricted and cannot slide at will due to the existence of the limiting table, the movement is more convenient and fast, and the safety is higher.

The invention belongs to the field of fertilizing device of foliar fertilizers, provides a fertilizing system for a sorghum foliar fertilizer, and aims to solve the problem that in the prior art, theabsorption of foliar fertilizer sprayed by a conventional fertilizing device is low. The fertilizing system comprises an agricultural machine, which comprises a vehicle frame, a power system that is fixed on the vehicle frame, and a wheel that is dynamically connected to the power system; a liquor storage box, which is provided with a urea cavity and a liquor cavity, wherein the urea cavity and the liquor cavity are independent, the liquor storage box is provided with a urea spray pipe and a liquor spray pipe, the urea spray pipe and the liquor spray pipe are respectively communicated with theurea cavity and the liquor cavity, the urea spray pipe faces the lateral-front side of the agricultural machine, the liquor spray pipe faces the lateral-rear side of the agricultural machine, and theurea spray pipe is provided with a water pump; and an atomization system, which comprises a driving rod and a jet-flow part, wherein one end of the driving rod is rotatingly connected to the wheel, and the joint between the driving rod and the wheel is not the center of the wheel.

The invention discloses an air-water full-rotation foliage spray device. According to the invention, an external pipe is connected with a compressed air storage tank; a central pipe is connected with a water tank; the external pipe and the central pipe are of a jacket structure; the front end of the central pipe is provided with a liquid spray opening; a liquid in the central pipe is rotationally sprayed into a Laval curved-surface expansion chamber through a spiral flow channel arranged between a swirler and a mandrel; the conical part of the central pipe is coaxially embedded into the external pipe in non-full contact; a draft section in the external pipe undergoes the process of changing from shrinking to enlarging; compressed air flows forward in a conical-cylinder-shaped throttle channel arranged between the external pipe and the central pipe and is also rotationally sprayed into the Laval curved-surface expansion chamber through the spiral flow channel arranged between the swirler and the central pipe; and Laval effect enables an air-water mixture to be transported to a spray pipe located at the front of the liquid spray opening and eventually jetted out at a high speed from an spray opening located at the front of the spray pipe. The device provided by the invention has the advantages of simple structure, reliability, craftiness and low cost and can most effectively transform potential energy of the compressed air into power for jet fly; meanwhile, mixing of air and liquid is uniform, so highly-efficient and high-quality spray operation is realized.

The invention relates to the technical field of environment-friendly dust removal, and discloses a spraying machine for environment-friendly dust removal. The spraying machine comprises a rotating base, wherein a supporting frame is fixedly installed on the upper surface of the rotating base, a fixing box is movably installed at the top end of the supporting frame, a movable groove is formed in the right side of the upper surface of the rotating base, a movable block is movably clamped in the movable groove, and threaded rod is movably connected to the right side of the moving block and is in threaded connection with the rotating base. Through the arrangement of an air compressor and an impeller, a gun mist machine sprays a water mist barrier at a certain frequency, so repeated coverage on the same area during movement is reduced, waste caused by continuous spraying is reduced, and dust removal cost is decreased; and meanwhile, under the action of a rubber sheet and a spring, when air is sprayed out, elastic energy of the rubber sheet and the spring is converted into kinetic energy of the air, so the initial kinetic energy of the air is increased, the water mist can be sprayed farther, the coverage range of the water mist is greatly increased, and dust removal efficiency is improved.

The invention discloses an ultrahigh-pressure long-distance vortex spray ring fire-fighting robot, and belongs to the technical field of fire-fighting robots. Comprising a fire-fighting robot body, a high-pressure vortex spray ring nozzle, a nozzle water inlet connector, rotating wheels, a crawler belt, a fixing groove, a clamping plate, a bottom plate, a rotating plate, a concave fixing plate, a rotating bolt, a hydraulic rod, a hydraulic pump, a concave clamping plate, a rubber pad, a sponge pad, a first spring plate, a compression spring, a second spring plate, a movable plate, a partition plate and an anti-skid pad. The high-pressure vortex spray ring fire-fighting robot comprises a fire-fighting robot body, a plurality of fixing grooves are formed in the top of the fire-fighting robot body, hydraulic pumps are arranged in the fixing grooves, hydraulic rods are arranged at the tops of the hydraulic pumps, top blocks are welded to the tops of the hydraulic rods, and concave fixing plates are welded to the tops of the top blocks. And a traditional integrated structure is abandoned, the high-pressure vortex spray ring nozzle can be freely mounted and dismounted, and a user can conveniently maintain and clean the high-pressure vortex spray ring nozzle.

The invention discloses a control device for preventing students from gathering together for campus epidemic protection. The problem that gathering together is prone to appearing on campus is solved.The control device comprises a material spraying mechanism, a strap, first air bags, a sleeving ring, a second air bag, a sleeve, first connecting blocks, connecting ropes, second connecting blocks, connecting rings, elastic strings, third air bags, a mounting rack, a motor, a rotary disc, a first rack, a second rack, a sliding rod, a supporting frame, a placing barrel, a guiding slot, a spiral spring, a top plate, a feeding pipe, a discharging pipe, first contact pieces, second contact pieces, third contact pieces, fourth contact pieces, contact balls and fifth contact pieces. The control device for preventing the students from gathering together for the campus epidemic protection is a wearable device, through the touch of people around on the first air bag, the second air bag and the third air bag, the material spraying mechanism is controlled, and candies are sprayed to evacuate crowds.

The invention relates to the technical field of irrigation, and discloses a water pressure-based irrigation base. The water pressure-based irrigation base comprises a fixed tower, a rotating taper sleeve is rotatably arranged at the upper end of the fixed tower, a rotating sleeve is rotatably arranged in the fixed tower, a flow limiting assembly is arranged at the upper end of the rotating sleeve, an arc buckle is arranged in the rotating taper sleeve, a nozzle is arranged on the outer wall of the rotating taper sleeve, and the flow limiting assembly comprises an inner inclined plate and an outer inclined plate. According to the water pressure-based irrigation base, a long metal rod does reciprocating motion, the long metal rod is arranged in an inverted U shape, in the bending process of the long metal rod, a U-shaped opening is extruded and is arranged in a circular shape, limiting metals in the long metal rod are close to each other, particles clamped in the limiting metals are extruded and can move along the wider sides of the limiting metals, so that the particles can fall off after the metal long rod recovers, the nozzle is prevented from being clamped, and a good irrigation effect is achieved; and the inner inclined plate and the outer inclined plate are matched, a flowing water channel is reduced, and the purpose of controlling water flow is achieved.

The invention discloses a cyclonic-water and sand direct-jet type washing device. An outer pipe is connected with a compressed air storage tank. A center pipe is connected with a water tank. The outer pipe and the center pipe are of a jacket structure. A liquid spray opening is formed in the front end of the center pipe. Liquid in the center pipe enters a Laval curved face expansion chamber. The conic section of the center pipe is coaxially embedded into the outer pipe in a partial contact manner. The flow guide section in the outer pipe shrinks firstly and then becomes large. Compressed air flows in a conical-cylinder-shaped throttling channel between the outer pipe and the center pipe and enters the Laval curved face expansion chamber in a rotary jet manner through a spiral runner between a hydrocyclone and the center pipe. A gas and water mixture is delivered to a spray pipe in the front due to the Laval effect, an hourglass is connected to the position above the spray pipe, and a gas, water and sand mixture is evenly jetted out through a spray opening in the front of the spray pipe at a high speed. The cyclonic-water and sand direct-jet type washing device is simple in structure, reliable, ingenious, low in cost and capable of converting compressed air potential energy into jet flight power in a most effective manner, the gas, the water and the sand are very evenly mixed as well, and efficient and high-quality strong impact spray-washing operation with the ultra-low amount of water is achieved.

A puncture device comprises a puncture rod (1) for causing a perforation, a sheath assembly (2) sleeved on the outer side of the puncture rod (1) as a surgical channel, and an exhaust vent (211), wherein the sheath assembly (2) comprises an inner tube (22) and an outer tube (21) sleeved on the outer side of the inner tube (22) to form an interlayer, the thiner end of the inner tube (22) is provided with an opening (221), a smoke exhaust passage (23) is arranged in the interlayer and communicates the opening (221) with the exhaust vent (211). Smoke is discharged out of the surgical space at the same time when air enters the surgical space, so that the lens blur caused by the smoke can be eliminated to avoid affecting the sight of medical staff, and improve the surgical efficiency. Meanwhile, the airbag sealing structure has an ingenious design with reliable sealing for surgical instruments of different sizes, and the product is safe in clinical use.

The present invention discloses a gas and water direct injection type flow hitting device which comprises an outer tube and a center tube. The outer tube is connected to a compressed air storage tank. The center tube is connected to a water tank. The outer tube and the center tube are a jacket structure. The front end of the center tube is a liquid nozzle. The liquid in the center tube enters into a Rafael curved surface expansion chamber from back to front. The cone part of the center tube is coaxially embedded into the outer tube in a non-full-contact way. The outer tube inner flow guide cross section has a change process of reduction and then amplification, compressed air flows forward in the cone-shaped throttle channel between the outer tube and the center tube to enter into the Rafael curved surface expansion chamber, a Rafael effect allows a gas and water mixture to be delivered to an injection tube in front of the liquid nozzle, and finally the mixture is injected from the nozzle in front of the injection tube in a high speed. The device has the advantage of simple, reliable and crafty structure and low cost, compressed air potential energy is most effectively transformed into jet flying force, the mixture of gas and liquid is very unit, and the flower hitting operation with high efficiency and high quality is realized.

The invention relates to a siphoning type multifunctional ventilating fan, comprising a machine case, an isolating curved plate, a siphoning type curved plate, an induction trunk, a siphoning opening, an air inlet, a metal net, a sheath with the metal net and a high-voltage power supply. Based on a siphoning type principle structure and a design of efficiently removing pollutants with oxygen ions, the siphoning type multifunctional ventilating fan can rotate a part of indoor air to siphon outdoor fresh air into a room and mix the outdoor fresh air with the indoor air together and also can efficiently remove pollutants with oxygen ions when the indoor air is exhausts. Therefore, the fresh air can be siphoned, and the temperature of the mixed air is close to the indoor temperature, so people do not feel uncomfortable and the circulating indoor air is also purified. The siphoning type multifunctional ventilating fan disclosed by the invention has the advantages of simple structure, easiness in manufacturing, low cost and small size, and also has multifunction of a ventilating fan, an air purifier and an air-conditioning fan; in addition, due to a circular siphoning type horn-shaped structure, the pressure of an indoor air inlet is increased; and the jetting distance of air is large, and the charge and exhaust of indoor air are relatively isolated so as to avoid mixing.

The invention discloses a jet device having a storage chamber. The jet device includes a nozzle, a jet pipe, a valve core and an elastic member. The nozzle is provided with a nozzle chamber and a nozzle mouth communicated therewith. A valve base is arranged on an internal wall of the nozzle chamber. A front end of the jet pipe is communicated with and sealedly connected to a back end of the nozzle, wherein the front end is towards to a jetting direction. A back end of a valve core body of the valve core is provided with two or more than two connecting wings which are vertical to an axial line of the valve core. Channels which allow liquid to enter into the nozzle chamber through the jet pipe are formed between the connecting wings. Under the situation that the valve core is matched with the valve base, the storage chamber is formed between the front ends of the connecting wings and the valve base. The size, in the axial line direction of the valve core, of the storage chamber is 1-3 times of an internal diameter of the nozzle chamber. The elastic member applies a force to a connecting pipe, wherein the force enables the connecting pipe to move towards the valve base. The jet device overcomes a defect that a jet device in the prior art is liable to cause flow breaking or reduction of a jet distance when the jet device in the prior art is used in point jet, especially for jetting a liquid in high viscosity. The invention provides the jet device having the storage chamber. By means of the jet device, a liquid flow is sufficient during point jet so that flow breaking is avoided.

The invention discloses an intelligent watering, dedusting and spraying system of a stacker-reclaimer. The system comprises a water tank, a plurality of support plates, a water pipe, a plurality of spraying mechanisms, and a plurality of sealing connecting pieces, wherein the water tank is provided with a glass tube liquid level meter arranged on the outer side wall and a water pump arranged in the water tank; the plurality of support plates are distributed around the periphery of the water tank at intervals; the water pipe includes a main pipe and a plurality of branch pipes; one spraying mechanism is arranged on one supporting plate, and each spraying mechanism includes a rotary connecting piece, a spiral spraying pipe, a plurality of nozzles and a motor; and one sealing connecting pieceis arranged at the other end of one branch pipe, and each sealing connecting piece includes a clamping ring, a sealing ring, a bearing and a pressurizing column. The spiral spray pipe is rotatably connected with a water outlet branch pipe through the rotary connecting piece, rotation and spraying are achieved at the same time, a centrifugal force generated by rotation enables sprayed water to besprayed farther after the sprayed water is sprayed out of the nozzle, space distribution during spraying is increased, and the sprayed water can form a mist-shaped spraying effect easily.

The invention relates to a sanitation vehicle and a secondary pressurizing suction and spraying device and a spray gun thereof. The spray gun comprises a spray gun body of a cylindrical structure. Oneend of the spray gun body is provided with a jet orifice, and the other end of the spray gun body is provided with an air inlet which forms a relay air port of an exhaust outlet of a suction fan. Thespray gun body is internally provided with an air pressurizing device for re-pressurizing high-pressure air entering the gun spray body from the air inlet. The air flow path on the spray gun body isprovided with an air supplementing opening which is located at the upstream of the air pressurizing device. The spray gun body further includes an atomizing device located at the jet orifice of the spray gun body. The mist discharge position of the atomizing device is within the outer contour of an air outlet column of the spray gun body, the air pressurizing device increases the pressure and speed of the high-pressure air again, and thus the spray gun shoots farther. In order to meet the injection volume of the high-pressure air, the air supply in the spray gun body can be realized through the air supplementing opening, and sufficient air supply can be ensured in the spray gun body.

The invention provides a medicine spraying device for animal husbandry. The medicine spraying device comprises a rotating fan blade, a contracting bin, a movable rod, liquid outlet holes, a stressed ring, a buffer ring, a bearing part, a supporting part and a flow distributing part; the inner end of an isolation plate is installed in the middle of the interior of a main body in an embedded mode; arotating bin is installed at the side edge of the top end of the main body in a welding mode, and the middle position above the rotating bin is connected with the bottom end of the contracting bin ina welding mode. According to the spraying device, the rotating bin, the contracting bin and a moving rod are arranged, the rotating fan blade is arranged inside the rotating cabin so that medicine liquid ejected from the interior of the main body can be impact to the rotating fan blade, then the rotating fan blade is enabled to rotate, the medicine liquid sequentially enters the interior of the contracting bin, then the moving rod is gradually jacked up, the moving rod is used for spraying the medicine liquid and adjusting the height of the sprayed medicine liquid to enable the medicine liquid ejected from the rotating bin to be ejected upwards.

The invention relates to the technical field of humidifiers, and discloses an energy-saving pulse humidifier. The energy-saving pulse humidifier comprises a water tank and an air blower, an ultrasonicatomizer is fixedly mounted in the water tank, and a floating guide ring is movably connected into the water tank in a sleeved mode. Through the arrangement of an eccentric wheel and movable blades,air entering a compression cylinder is compressed and then released to form pulse type shock waves, generated water mist is impacted to be sprayed farther, the spraying range of the water mist is enlarged, meanwhile, through the arrangement of a distribution device, the water mist formed in the water tank is equally divided and intercepted, so that the compressed air sprayed from air nozzles can be equivalently mixed with water mist, the humidity of the mixed air is kept relatively consistent, the mixing uniformity of the air and the water mist is improved, a spraying opening is obliquely arranged upwards by 45 degrees, and sprayed wet air diffuses in an arc shape and can be sprayed farther, the humidifying range is further expanded, and the diffusion speed is increased.

The invention discloses an agriculture and forestry fire extinguishing device, and belongs to the technical field of protection and fire extinguishing equipment. The agriculture and forestry fire extinguishing device comprises a mounting box, an electric telescopic rod, a working box, a water pump, a motor and a water tank, the top of the mounting box is rotationally connected with a box door, thebottom of the mounting box is connected with a containing box, the electric telescopic rod is fixedly connected in the containing box, the output end of the electric telescopic rod is fixedly connected with a sliding table, the sliding table is connected with a lifting rail and a pushing-closing mechanism, the outer wall of the mounting box is connected with an extension rail corresponding to thelifting rail, the output end of the motor penetrates through the inner wall of the working box and extends to the bottom of the working box to be connected with a roller, the bottom of the working box is rotationally connected with a first auxiliary wheel, the roller is in friction connection with the first auxiliary wheel, the roller and the first auxiliary wheel are connected to the lifting rail and the extension rail in a rolling manner, the bottom of the working box is connected with a weeding mechanism, and the top of the working box is connected with a water-spraying mechanism. According to the agriculture and forestry fire extinguishing device, a fire extinguishing track is flexible and wide in range, flames can be killed from roots, and the nursery stock protection capacity is high.

The invention relates to the technical field of spray devices, in particular to an ultra-long-distance sprayer; the ultra-long-range sprayer of the present invention has a relatively high wind pressure and a relatively long shooting range; it includes a bracket and a sprayer body, and the sprayer body is designed On the bracket, the sprayer body includes a cylindrical casing, one end of the casing is the inlet end, and the other end is the outlet end, and the casing is equipped with a speed-increasing fan, which is a cone-shaped wheel structure The fan, the blade of the speed-increasing fan is a twisted airfoil blade, the lower part of the bracket is equipped with a pumping system, and the outlet end of the casing is equipped with a water mist system with multiple nozzles, and the water mist system is connected to the pumping system through a delivery pipe After the water is pressurized by the pumping system and atomized by the water mist system, the mixed water mist is continuously projected to the required area by the speed-increasing fan; the ultra-long-distance sprayer of the present invention is widely used in the technical field of spraying devices.

The invention discloses a fire-extinguishing water tanker comprising a traction vehicle head. A traction board is arranged on the right side surface of the traction vehicle head. A motor groove is formed in the left side of the upper surface of the traction board. A motor is arranged in the inner side surface of the motor groove. A second gear sleeves an output shaft of the motor. A rotary shaft is rotatably connected with the traction board through a bearing arranged on the middle of the upper surface of the traction board. A first gear engaged with the second gear sleeves the outer side of the rotary shaft. A rotary board is arranged on the upper end surface of the rotary shaft and is rotatably connected with a rotary rod through a hinge arranged on the left side of the upper surface ofthe rotary board. The fire-extinguishing water tanker has compact structure and is convenient to use, wherein a water tank can be quickly replaced, so that fire fighting efficiency is greatly increased. By means of a storage groove, fire fighting equipment can be conveniently stored. A turbo-pump can pressurize a fire-extinguishing solution, so that the fire-extinguishing can be jetted farther. Ahanging ring brings convenience to hoisting and replacement of a water storage cylinder.

The invention discloses a cyclonic-water and sand direct-jet type washing device. An outer pipe is connected with a compressed air storage tank. A center pipe is connected with a water tank. The outer pipe and the center pipe are of a jacket structure. A liquid spray opening is formed in the front end of the center pipe. Liquid in the center pipe enters a Laval curved face expansion chamber. The conic section of the center pipe is coaxially embedded into the outer pipe in a partial contact manner. The flow guide section in the outer pipe shrinks firstly and then becomes large. Compressed air flows in a conical-cylinder-shaped throttling channel between the outer pipe and the center pipe and enters the Laval curved face expansion chamber in a rotary jet manner through a spiral runner between a hydrocyclone and the center pipe. A gas and water mixture is delivered to a spray pipe in the front due to the Laval effect, an hourglass is connected to the position above the spray pipe, and a gas, water and sand mixture is evenly jetted out through a spray opening in the front of the spray pipe at a high speed. The cyclonic-water and sand direct-jet type washing device is simple in structure, reliable, ingenious, low in cost and capable of converting compressed air potential energy into jet flight power in a most effective manner, the gas, the water and the sand are very evenly mixed as well, and efficient and high-quality strong impact spray-washing operation with the ultra-low amount of water is achieved.

The invention discloses a method for preparing p-hydroxybenzoic acid, raw materials for preparing p-hydroxybenzoic acid are reacted in a reaction kettle, the reaction kettle comprises a kettle body and a kettle cover, the kettle cover is provided with a stirring device extending into the kettle body, the kettle body is provided with a feed port and a discharge port, and the discharge port is provided with a discharge port. The outer side of the kettle body is provided with a first pressure maintaining cavity and a second pressure maintaining cavity which are respectively communicated with the feed port and the discharge port, pressure monitoring devices are arranged in the first pressure maintaining cavity and the second pressure maintaining cavity, the first pressure maintaining cavity is communicated with a pressurizing jet device, the second pressure maintaining cavity is communicated with a buffer cavity, and a heating device and a cooling device are also arranged in the kettle body; the feeding port and the discharging port are each provided with a first valve, a second valve is arranged between the pressurizing jet flow device and the first pressure maintaining cavity, and the buffering cavity and the second pressure maintaining cavity are provided with a third valve in a communicating mode. The invention provides a preparation method of p-hydroxybenzoic acid, which can perform continuous reaction, and solves the problem of poor continuity of carboxylation reaction of p-hydroxybenzoic acid in the prior art.