44results about How to "For the purpose of cooling" patented technology

The invention discloses a method for preparing an inert porcelain ball by using an aluminum oxide dust-recovery powder and belongs to the technical field of new materials. A lot of aluminum oxide dust-recovery powder is used in the formulation of the method disclosed by the invention, the cost is obviously reduced, meanwhile a waste material is used and the environment is protected. According to the method disclosed by the invention, a composite sintering aid comprising calcium carbonate, talcum, and spodumene mineral powder is added into the formulation to facilitate the formation of magnesia-alumina spinel and mullite for enhancing in the product so as to improve the thermal shock resistance and strength of a product; a little kaolin is added into the formulation for improving the plasticity of a perform body, promoting molding conveniently and improving the strength of a green body; meanwhile in order to reduce the high energy consumption caused by wet ball milling, the powder for preparing the inert porcelain ball disclosed by the invention is subjected to continuous dry wet milling; the inert porcelain ball prepared by the method disclosed by the invention has the characteristics of high temperature resistance, high strength, good thermal shock resistance and the like, is excellent in comprehensive performance, and is completely suitable for requirements for a catalyst carrier and supporting performance in various industries.

The invention discloses a single-cooling air conditioner comprising a compressor, an outdoor heat exchanger, an electronic control radiator, a first throttle element, and an indoor heat exchanger. The compressor is provided with an exhaust hole and a suction hole. The outdoor heat exchanger is connected with the exhaust hole. The electronic control radiator is provided with a coolant passage. An inlet of the coolant passage is connected with the outdoor heat exchanger. The first throttle element is connected with an outlet of the coolant passage. The indoor heat exchanger is connected with both the first throttle element and the suction hole. The single-cooling air conditioner according to the embodiment is capable of well cooling an electronic control module, so that the single-cooling air conditioner can still operate under high frequency in the high temperature environment; the temperature of coolant entering the electronic control radiator is close to or higher than the outdoor ambient temperature, so that the temperature of the electronic control radiator can be higher than the ambient dew point temperature, and the problem that condensed water affects reliability of the electronic control module is solved basically.

The invention provides a vertical concrete mixer and a concrete production line. The vertical concrete mixer comprises a mixing drum, a mixing component, a cooling channel and a rack; the mixing drumis fixedly installed on the rack; the mixing component is installed on the mixing drum, and the mixing drum is provided with a material inlet and a material outlet; the mixing component extends into the mixing drum and can be used for mixing concrete; the cooling channel is wound on the outer wall of the mixing drum and is used for cooling the mixing drum after work; a water inlet end of the cooling channel is connected with a water tank, and a water outlet end of the cooling channel is connected with a refrigerator; the refrigerator is communicated with the water tank so as to form cooling cycle. The vertical concrete mixer and the concrete production line, which are provided by the invention, can cool the mixing drum with higher heat after work, and do not affect the internal temperatureof the mixing drum.

The invention provides a lithium ion battery and a positive electrode slurry stirring method therefor, and belongs to the technical field of lithium ion batteries. The positive plate of the lithium battery comprises a positive current collector and positive slurry coated on the positive current collector, wherein the positive electrode slurry contains a positive electrode active substance, a conductive agent and a binder; the positive electrode active substance is a mixture of lithium nickel cobalt manganate, lithium iron phosphate and lithium manganite; a mixer circulating water temperature control regulating system comprises a temperature frequency conversion regulating switch and a circulating water heating system in the stirring process of the positive electrode slurry of the lithium ion battery, and the circulating water temperature of the circulating water heating system is set to be 45-75 DEG C. The dispersity of the lithium battery positive electrode slurry is improved, the stirring time is shortened, the production qualification rate and the consistency of the lithium batteries are improved, and the lithium battery positive electrode slurry has higher convenience and operability and economic and practical values.

The invention relates to a heat dissipation and dust removal device for electromechanical equipment. The head dissipation and dust removal device comprises a shell, heat dissipation units, a heat conducting unit and a dust removal unit; a horizontally-arranged hollow installation plate is fixedly installed in the middle of the shell, two side plates are fixed to the top of the installation plate,and the side plates, the installation plate and the shell jointly form a space for containing the electromechanical equipment; the heat dissipation units comprises first heat dissipation units arranged on the side plates and second heat dissipation units fixedly arranged at the bottom of the installation plate; the heat conducting unit is cyclically arranged on the upper portion of the shell, andcooling liquid cyclically flows in the heat conducting unit; the dust removal unit comprises a dust removal net, a detachable sweeping unit for sweeping dust accumulated on the dust removal net and adust suction unit for sucking dust. Compared with the prior art, by means of the heat dissipation and dust removal device, the electromechanical equipment can achieve the advantages of being good in dust removal and heat dissipation effect and the like.

The invention relates to the technical field of illumination, in particular to an office LED lamp with a fan function. The office LED lamp comprises a fan protection barrel, a fan, a lampshade and anLED modulator tube; the lower end of the fan protection barrel is open; the fan is arranged on the lower end of the fan protection barrel; a protection shield net is arranged at the lower end openingof the fan protection barrel; an air cavity is arranged above the fan; a first radiofrequency receiver and a second radiofrequency receiver are embedded on the upper end of the outer surface of the fan protection barrel; an annular lamp base is arranged on the lower end of the outer surface of the fan protection barrel; a modulator tube assembly groove and an annular air inlet are formed in the bottom surface of the annular lamp base; the annular air inlet communicates with the air cavity through an air pipe; a dustproof filter net is arranged at the lower end opening of the annular air inlet;the LED modulator tube is arranged in the modulator tube assembly groove; the lampshade is arranged below the LED modulator tube; and the first radiofrequency receiver and the second radiofrequency receiver are separately electrically connected with the fan and the LED modulator tube. By adopting the office LED lamp with the fan function, air motion in an office is improved; turning on and off isconvenient to control; and office comfort is improved favorably.

The invention relates to a radiating type collector ring and an application thereof. The radiating type collector ring comprises a collector ring body which sequentially includes an upper collector ring, a collector ring supporting plate and a lower collector ring from top to bottom. The upper surface of the upper collector ring is provided with a plurality of first air guide blades, and the lower surface of the lower collector ring is provided with a plurality of second air guide blades. The included angle between the mounting axis of each first air guide blade and the diameter direction of the upper collector ring at the position is 0-45 degrees. The included angle between the mounting axis of each second air guide blade and the diameter direction of the lower collector ring at the position is 0-45 degrees. When a generator unit is working, the first air guide blades and the second air guide blades make air around the collector ring body move regularly to form strong wind. In the process, the heat on the surface of the collector ring body can be effectively taken away to achieve the purpose of cooling. Moreover, carbon dust produced due to friction between a carbon brush and the collector ring body can be taken away, and carbon powder can be prevented from being attached to and deposited on the surface of the collector ring body to affect insulation.

The invention discloses a high heat radiation composite cable. The high heat radiation composite cable comprises a PVC protection layer which is outmost and a cable installed inside the PVC protection layer; more than one projection parts are uniformly arranged on an end surface of one side of the PVC protection layer; the projection parts are extended toward one side of the cable and is tightly pressed against the end surface of one side of the cable; an opening is formed on the upper end surface of the projection part and the opening end forms a containing chamber; the materials of the projection parts and the PVC protection layer are the same; the lower end surface of the projection part is provided with an arched opening; the arched opening is sealed through an arched bottom plate; the arched bottom plate and projection part are in sealing connection through an adhesive; and the lower end surface of the arched bottom plate is in sealing contact with the upper end surface of the cable. The high heat radiation composite cable is simple in structure. Through arrangement of projection parts which are projected internally, a gap layer is formed between the PVC protection layer and the cable, which improves a pressure resistance capability and prevents a hard object from cutting the cable. Besides, the arrangement of the projection parts which are projected internally can cool down the cable, and the cable is easy to take out from the PVC protection layer in a later stage.

The invention discloses a heat preservation vinasse anaerobic fermentation device capable of air isolation, wherein the device comprises a fermentation box, an air sucking pump and a temperature regulating tank. The outer side of the fermentation box is provided with a constant temperature oven, and the upper left end of the constant temperature oven is connected with a high temperature waterway;the temperature regulating tank is arranged at the tail end of the high temperature waterway, and the interior of the temperature regulating tank is provided with a rotating shaft; the air sucking pump is arranged above the temperature regulating tank, and the right end of the temperature regulating tank is connected with a low temperature pipeline; a stirring shaft is arranged at the middle position of a separation plate, and the top end of the stirring shaft is connected with a motor; the bottom end of the fermentation box is connected with an observation pipe, and the interior of the observation pipe is provided with a plunger. The invention also discloses an operation method of the heat preservation vinasse anaerobic fermentation device capable of air isolation. The air sucking pump arranged on the heat preservation vinasse anaerobic fermentation device capable of air isolation can extract air in the fermentation box through a gas conveying pipe so as to achieve the purpose of airisolation, so the working efficiency of anaerobic strains is improved, and the practicability of the heat preservation vinasse anaerobic fermentation device capable of air isolation is greatly improved.

The invention discloses a demolding and cleaning mechanism for casting. The demolding and cleaning mechanism comprises a supporting frame, and a mold splitting mechanism, a dumping mechanism and a screening mechanism are arranged on the supporting frame; the mold splitting mechanism comprises a transfer sliding block, the transfer sliding block is slidably connected with the top of the supportingframe, the bottom of the transfer sliding block is connected with a separation frame through a first electric telescopic rod, the middle of the separation frame is vertically and slidably connected with an upper mold clamping plate, and a lower mold clamping plate is arranged at the bottom of the separation frame; the dumping mechanism comprises a supporting table, the supporting table is arrangedbelow the supporting frame, and one side of the supporting table is rotationally connected with a dumping plate through a first rotating shaft; and the screening mechanism comprises a conveying frame, the conveying frame is arranged on the side, close to the first rotating shaft, of the supporting table, a plurality of conveying rollers are rotationally connected with the middle of the conveyingframe, and a vibration motor is installed at the bottom of the conveying frame. According to the demolding and cleaning mechanism for casting, the purposes of casting taking-out and molding sand separation are automatically achieved, the efficiency is high, and the labor intensity is reduced.

The invention relates to a vertical metal plate strip friction composite device. The device comprises two extrusion rolls, a first groove, a first flow-through slot, a stabilizing groove, an arc-shaped plate, a first bevel, a micro-cylinder, an inclined block, an oil delivery pipe, and a feeding device, wherein the feeding device comprises a placement block, a spray port, and a rotating device, the rotating device is provided with a plurality of material discharge blocks, a branch communication pipe and a main communication pipe, wherein the main communication pipe penetrates through the placement block, a sealing device is arranged in the branch communication pipe, the sealing device comprises a micro motor fixedly connected to the outer side of the branch communication pipe, the micro motor is connected with a sealing plate, an opening area of the sealing plate and an opening area of the branch communication pipe is the same, a raw material barrel is arranged above the main communication pipe, an extrusion air cylinder is arranged above the raw material barrel, and an extrusion disc is connected to the extrusion air cylinder. The device has the advantage of capable of performinglubrication between the rolls.

The invention relates to the technical field of engines, in particular to a multifunctional timing gear chamber double-circulation cooling system of a diesel engine. The multifunctional timing gear chamber double-circulation cooling system comprises an engine body, wherein a timing gear chamber is fixedly arranged on one side of the engine body, the timing gear chamber comprises a timing gear shell and a timing gear shell cover, the timing gear shell cover is fixed on one side, away from the engine body, of the timing gear shell through a screw, a plurality of mutually meshed gears are fixedlyarranged inside the timing gear shell, and a second water guide pipe is wound and fixedly arranged in the side wall of the timing gear shell. According to the multifunctional timing gear chamber double-circulation cooling system, the timing gear chamber on one side of the engine can be cooled, the temperature of the periphery of the engine cannot be additionally increased, the gears in the timinggear chamber can be protected, and the service life of the gears is prolonged.

The invention belongs to the field of energy-saving facility devices, and discloses automatic water circulation system equipment for an aluminum alloy glass sun room. The automatic water circulation system equipment is provided with a box, and a water temperature adjusting device is fixedly installed inside the box through a bolt; and a booster water pump is communicated to the upper end of the box, and a drainage pipe and an electromagnetic valve are installed at the bottom of the box. According to the automatic water circulation system equipment for the aluminum alloy glass sun room, norm-temperature water, hot water and cold water can be provided for a roof of the sun room. At ordinary times, norm-temperature water is supplied to conduct micro-washing on the glass roof; the cold water is supplied in summer to achieve the aim of cooling the place in the glass sun room; and the hot water is supplied in winter to melt accumulated snow on the roof.

The invention discloses a renewable ink box with a water retention function. The renewable ink box structurally comprises a water retention device, a renewable ink box body and a stirring mechanism, wherein the stirring mechanism and the water retention device are arranged on the renewable ink box body. Compared with the prior art, the renewable ink box has the beneficial effects that by utilizinghigh water-absorbing quality of a sponge, water evaporated by heating ink can be absorbed; the sponge slides downwards for self-weight after water absorption, so that a rotor rotates to generate electricity, an electromagnet generates magnetism to squeeze the sponge based on the attraction of the opposite magnetic poles, and the water is squeezed out to effectively prevent the ink from drying; and meanwhile, as the sponge slides downwards for self-weight, the resistance of the sliding rheostat can be adjusted, the more water is absorbed by the sponge, the smaller the resistance of the slidingrheostat is, the larger the current of the electromagnet is, the larger the squeezing force of two squeezing plates on the sponge is, and the water in the sponge is more favorably squeezed out.

The invention discloses grate cooler transmission mechanism sealing equipment for cement production in the technical field of grate coolers. The grate cooler transmission mechanism sealing equipment for cement production comprises a grate cooler transmission shaft and a grate cooler rack, a sealing isolation plate is fixedly connected to the left side of the grate cooler rack, the grate cooler transmission shaft penetrates through the sealing isolation plate, a waterproof sealing bearing is connected to the outer wall of the grate cooler transmission shaft in a sleeving mode, and the grate cooler transmission shaft is fixedly connected with the inner wall of the waterproof sealing bearing. According to the grate cooler transmission mechanism sealing equipment for cement production, the sealing property of a grate cooler transmission mechanism can be improved to a great extent, the condition that dusty gas is blown out to cause secondary pollution on the environment is effectively prevented, and the grate cooler transmission shaft can drive a cleaning brush to brush the outer side wall of the waterproof sealing bearing to prevent dust and impurity adhesion in the rotating process; and the device has the function of washing the outer side wall of the waterproof sealing bearing while brushing is conducted and also achieves the purpose of cooling the waterproof sealing bearing, water spraying treatment can be conducted if high-temperature dusty gas is blown out, and then the pollution degree is reduced.

The invention discloses a computer controlled indoor noise monitoring system, comprising a computer disposed in a monitoring room and noise decibel sensors respectively installed in different areas ofthe room, wherein the computer comprises a host provided with a chassis, and a display device; the signal output ends of the noise decibel sensors are connected to the signal input end of the CPU installed in the chassis; an air cooling system and a water cooling system are connected to the chassis; the display device includes a display and a fixed seat; the front side of the display is providedwith a display screen, and the fixed seat includes a base and a support rod vertically disposed on the base. The invention is capable of improving the heat dissipation of the computer, and the displaymay rotate left and right to adjust the position according to needs and form a protection against the display screen to prevent dust from accumulating and avoid touching the human body fingerprint.

The invention relates to a bathroom which can be used for showering, in particular to a shower system with an external heat-supplying system. The shower system with the external heat-supplying systemhas good use effect and comprises a water heater, a cool water pipe, a hot water pipe and a heat dissipating device; the two water outlet pipes are arranged on the water heater, the two water outlet pipes are the hot water pipe and the cool water pipe respectively, the heat dissipating device used for heat dissipation is connected onto the hot water pipe, a hot-water heat-dissipating pipe is arranged on the heat dissipating device, and the two ends of the hot-water heat-dissipating pipe are connected onto the hot water pipe respectively to form a circuit used for dissipating heat and then heating air. Corresponding valves are arranged on the water heater, the cool water pipe and the heat dissipating device and used for controlling the working states respectively; a heat-dissipating and ventilation pipe is arranged on the heat dissipating device, the hot-water heat-dissipating pipe is located in the heat-dissipating and ventilation pipe, an air inlet pipe is arranged at one end of the heat-dissipating and ventilation pipe, and a moisture exhausting pipe and an air outlet pipe are arranged at the other end of the heat-dissipating and ventilation pipe respectively; the moisture exhausting pipe is used for exhausting moisture in the bathroom.

The invention relates to an oilless air compressor, in particular to an oilless air compressor with a circulating cooling function. According to the oilless air compressor with the circulating cooling function, the air compressor can be effectively cooled, and the air compressor is prevented from being damaged by high temperature. The oilless air compressor with the circulating cooling function comprises a base, a shell, a guide block, an air compressor body, fixing frames and the like, a groove is formed in the left side of the base, the shell is arranged at the top of the base, the guide block is arranged on the left side of the top of the base and located in the shell, the air compressor body is arranged on the guide block in a sliding mode, and the fixing frames are arranged on the right sides of the lower portions of the front side and the rear side of the shell. A piston rod slides left and right to continuously suck outside air into the shell, hot air in the shell is discharged through a through hole, air circulation in the shell is accelerated through left-right sliding of the piston rod, and the purpose of cooling the interior of the shell is achieved.

The invention discloses a cooling and lubricating pipeline system for a gear of a gear box. The cooling and lubricating pipeline system comprises a gear pump and a pipeline system, wherein the pipeline system comprises an oil pipe assembly, a front branch oil pipe assembly and a rear branch oil pipe assembly. The cooling and lubricating pipeline system has the advantages of simple and exquisite structure, flexibility, high heat dissipation and capability of fulfilling the aim of cooling during lubrication of the gear box.

The invention relates to a technical process for treating peculiar smell produced by animals died of illness. Comprising the steps of pretreatment cooling, pretreatment enrichment and palladium-carbon catalytic oxidation. The treatment process disclosed by the invention has the advantages of environmental protection, low treatment cost, simplicity and convenience in operation, high automation degree, low treatment energy consumption, up-to-standard discharged gas, no peculiar smell and the like.

The invention is suitable for the technical field of building construction equipment, and particularly relates to a processing shed for building construction. An embodiment of the invention provides the processing shed for building construction. The processing shed can automatically collect rainwater, and collects and stores the rainwater below the earth surface so as to prevent the temperature ofthe rainwater from being too high, so that when the temperature needs to be lowered, the water is pumped up through a water inlet component; the water is stored in a water storage tank on a top plateand in a transverse pipe; and the water in the transverse pipe slowly drips to a water absorbing layer, and then the water in the water absorbing layer is driven to volatilize under the flowing of air, and thus, the purpose of cooling the processing shed is achieved. The processing shed has a simple structure and reasonable design, can be quickly cooled, provides a comfortable working environmentfor workers, indirectly improves the work efficiency of workers, and avoids the physical discomfort of the workers caused by overheating.

The invention discloses a power equipment cooling device which comprises a cabinet body and a cabinet door, the cabinet door is rotatably mounted on the cabinet body, a locking assembly is mounted on the cabinet body and matched with the cabinet door, a cooling box is arranged in the cabinet body, a condensation pipe is mounted in the cooling box, a condenser is arranged at the top of the cabinet body, and a cooling fan is arranged in the condenser. One end of the condensation pipe is installed at the output end of the condenser, the other end of the condensation pipe is installed at the input end of the condensation pipe, and an exhaust fan and an air blower are installed at the top of the cooling box. Heat emitted by the power equipment is mixed with gas in the cooling box under the action of the exhaust fan and the blower, so that the temperature of the space where the power equipment is located is reduced, the aging speed of cables and electronic components in the power equipment is greatly reduced, and the service life of the power equipment is prolonged.

The invention discloses an efficient and energy-saving screw type air compressor, and relates to the field of air compressors. The efficient and energy-saving screw type air compressor comprises a cabinet body, a machine shell, a base and a driving motor; the machine shell and the driving motor are both located in the cabinet body, a screw is installed in the machine shell, and an air inlet pipe and an air outlet pipe penetrate through the top and one side of the machine shell correspondingly. According to the efficient and energy-saving screw type air compressor, a storage assembly is arranged, after the air compressor is moved to a designated position, a worker starts a servo motor, then a two-way lead screw rotates, the two-way lead screw rotates to drive a threaded sleeve to move and a worm to rotate, after the threaded sleeve moves, a supporting rod pulls a mounting frame to turn over, the worm rotates to enable a worm gear to drive a rotating shaft to rotate, and meanwhile, the rotating shaft drives the mounting frame to turn over, so that the mounting frame drives a roller to turn over upwards to be stored in the base; and meanwhile, supporting blocks make contact with the ground, so that the air compressor is placed more stably, automatic deviation is not prone to occurring, and the stability of the air compressor is improved.

The invention provides a cultivation device for sprout vegetables. The device comprises a transparent barrel body, and an upper cover and a base which are movably connected with the upper and lower edges of the transparent barrel body, and is characterized in that the base is welded with a spiral support frame which extends upwards and is laid with a culture medium, and the culture medium is a sponge or a non-woven fabric. Through the cultivation device for sprout vegetables, the purpose of miniaturization of the cultivation device can be achieved.

The invention discloses a high heat radiation composite cable. The high heat radiation composite cable comprises a PVC protection layer which is outmost and a cable installed inside the PVC protection layer; more than one projection parts are uniformly arranged on an end surface of one side of the PVC protection layer; the projection parts are extended toward one side of the cable and is tightly pressed against the end surface of one side of the cable; an opening is formed on the upper end surface of the projection part and the opening end forms a containing chamber; the materials of the projection parts and the PVC protection layer are the same; the lower end surface of the projection part is provided with an arched opening; the arched opening is sealed through an arched bottom plate; the arched bottom plate and projection part are in sealing connection through an adhesive; and the lower end surface of the arched bottom plate is in sealing contact with the upper end surface of the cable. The high heat radiation composite cable is simple in structure. Through arrangement of projection parts which are projected internally, a gap layer is formed between the PVC protection layer and the cable, which improves a pressure resistance capability and prevents a hard object from cutting the cable. Besides, the arrangement of the projection parts which are projected internally can cool down the cable, and the cable is easy to take out from the PVC protection layer in a later stage.

The invention discloses a regenerated ink cartridge with water retention function. Its structure includes a water retention device, a regenerated ink cartridge body and a stirring mechanism. The regenerated ink cartridge body is equipped with a stirring mechanism and a water retention device. Compared with the prior art, the invention has the beneficial effects of : The sponge has strong water absorption, which can absorb the water evaporated by the ink. After absorbing the water, the sponge slides down by its own weight, so that the rotor rotates and generates electricity, so that the electromagnet generates electricity and generates magnetism. Squeeze the sponge so that the water can be squeezed out, effectively preventing the ink from drying out. At the same time, the sliding of the sponge can also adjust the resistance of the sliding rheostat. The more water the sponge absorbs, the smaller the resistance of the sliding rheostat, and the current of the electromagnet The larger the pressure is, the greater the extrusion force of the two extrusion plates on the sponge is, which is more conducive to extruding the moisture in the sponge.

The invention provides micro-nano-scale regenerated fiber non-woven fabric with moisture conducting and rapid drying properties and a preparation method of the non-woven fabric. The preparation method comprises steps as follows: bamboo strips are soaked in a degumming solution and subjected to steaming, water washing, dividing, reduction, softening and fiber combing under heating and pressurizing conditions, and long natural bamboo fiber and short natural bamboo fiber are obtained; the short natural bamboo fiber is subjected to enzymolysis in cellulase, and bamboo fiber nanowhiskers are obtained; a first absorption layer is formed by the long natural bamboo fiber, the bamboo fiber nanowhiskers are added to a regenerated silk protein solution to form a spinning solution, a transition layer is formed on the surface of the first absorption layer through spinning, long natural bamboo fiber is uniformly laid on the transition layer to form a second absorption layer, gray fabric formed by the first absorption layer, the transition layer and the second absorption layer is subjected to needling reinforcement and hot press forming, and the micro-nano-scale regenerated fiber non-woven fabric with moisture conducting and rapid drying properties is obtained.

The invention discloses a winter warm type sunlight greenhouse which comprises a rear wall and side walls. A planting area is formed among the rear wall and the side walls, a rear ceiling is arrangedat the top of the rear wall and extends upwards and obliquely extends towards the low ends of the side walls from the top of the rear wall, a ceiling is connected at the high end of the rear ceiling,one end of the ceiling extends towards the low ends of the side walls from the rear ceiling in an arc manner, the other end of the ceiling is arranged on the ground of the planting area, and a plurality of supporting structures are arranged at connecting positions of the rear ceiling and the ceiling. The rear ceiling and the ceiling are supported by the supporting structures, suitable height in the greenhouse is ensured by the aid of the oblique rear ceiling, downward digging of excessive lands is omitted, the height of the rear wall is reduced, so that the sunshade area can be greatly reduced, adjacent front and rear greenhouses can be more compactly built, land utilization rate is greatly increased, the height of the rear is reduced, the width of the rear wall is correspondingly reduced,and the land utilization rate can be further increased.