30results about How to "Increase ventilation" patented technology

The invention relates to a saline-sodic land reclamation and control method. Wide and deep research is long developed on the reclamation of saline-sodic land at home and abroad, and more focuses on engineering measures than applies biological techniques; although achievement has been made, some insurmountable difficulties still exist. The saline-sodic land reclamation and control method comprises the following steps: bulk deep loosening, applying soil deep loosening agents and saline-sodic soil improvement agents to deep loosening soil, purposefully and proportionally applying biologically organic fertilizer according to the composition of soil detected by adopting a nutrient balance method and a nitrogen phosphorus and potassium proportioning method which both comprise the following steps: subtracting soil nutrient-supplying amount from the fertilizer requirement of target yield, supplementing the balance through fertilizing, hathpace ridge forming, draining water and controlling salt, planting green manure-saline alkali tolerant high-yielding grass crop jerusalem artichoke to thoroughly improve the soil.

A protective sport helmet, such as for lacrosse includes a hard shell portion. The hard shell portion is constructed so as to provide protection to a wearer's head. The inner side of the hard shell portion includes a lining portion that is secured thereto. A chin strap portion is includes for attachment to the hard shell portion at a plurality of attachment points. The hard shell port ion includes a ledge portion that extends generally forwardly therefrom. A visor portion is secured to the hard shell portion and overlies the ledge portion. A facemask portion is secured to both the hard shell portion and the ledge portion in order to improve the structural integrity of the helmet.

A method for purging air in a goggle area on the interior of a face mask is provided. A mouthpiece is positioned in front of a mouth of a person. Positive purging of air in the goggle area on the interior of the face mask is assured by permitting air to flow from the goggle area on the interior of the face mask to the mouthpiece airway while substantially preventing air flow in the opposite direction to the goggle area. Air is purged through the mouthpiece by affirmative, breath-driven, passive ventilation while permitting a person to breathe freely and without distraction, obstruction, or deliberate action, by normal breathing with the lips in a natural position just behind the mouthpiece. Increased ventilation on the interior of the face mask is selectively forced by puckering the person's lips to engage the mouthpiece while not requiring support or retention of the mouthpiece.

The invention relates to a special fruit bag for a pomegranate and a preparation method of the fruit bag. The special fruit bag is prepared from the following components in parts by weight: 70-80 parts of linear low-density polyethylene resin, 20-30 parts of low-density polyethylene resin, 5-8 parts of antibacterial masterbatch, 2-3 parts of pest control masterbatch, 15-20 parts of antifog masterbatch, 15-20 parts of calcium carbonate masterbatch, 1-2 parts of ultraviolet absorbent, 0.1-0.5 part of antiblocking agent, 1-2 parts of antistatic agent, 1 part of liquid paraffin and 1-2 parts of foaming agent. The preparation method comprises the steps of uniformly stirring and mixing all the components in parts by weight, then, pouring the mixture into a film blowing machine to prepare a film bag with the thickness of 0.02-0.03mm, and sleeving a paper bag outside the fruit bag. The fruit bag is of a double-layer structure that the paper bag is sleeved outside a polyethylene bag, so that the strength and toughness of the fruit bag are enhanced, and the defects that the surface of the paper bag is rough to scratch the surface of a fruit and the paper bag is easy to tear and difficult to bag are overcome; in addition, the polyethylene bag is modified, so that the air and moisture permeability as well as pest control, antibacterial and anti-fog performances of the fruit bag are enhanced.

The invention discloses a temperature sensor for surface air temperature observation. The temperature sensor comprises a first flow guide plate and a second flow guide plate arranged below the first flow guide plate, and a flow guide ring piece, wherein the first flow guide plate and the second flow guide plate are both of a horizontally-placed circular truncated cone structure with the small upper portion and the large lower portion and are both of a hollow structure with the open lower bottom; the flow guide ring piece is of a hollow circular truncated cone structure with the large upper portion and the small lower portion and the open upper bottom surface, and the lower bottom edge of the flow guide ring piece and the lower bottom edge of the first flow guide plate coincide and are spliced; and the first flow guide plate and the second flow guide plate are connected and threaded by a heat insulation column, upper and lower extending ends are connected with a first reflecting plate and a second reflecting plate respectively, and a temperature sensor probe is arranged at the upper bottom of the second flow guide plate. The temperature sensor has the beneficial effects that the area of the air inlet is increased, the side surface forms an air gathering inclined face, horizontal air flow higher than the flow guide ring piece can be guided to enter, the measured temperature has good timeliness, the ventilation quantity is increased, and therefore lag errors are reduced, the structure has a relatively good ventilation environment, and radiation errors are reduced.

A garment with subpanel ventilation assembly includes an upper air impervious panel having a top edge and a bottom edge, a lower air impervious panel having a top edge and a bottom edge, an air permeable vent panel having a top edge continuously joined with the bottom edge of the upper air impervious panel, and a bottom edge continuously joined with the top edge of the lower air impervious panel, and an air impervious underlay panel underlying and spanning the vent panel. The underlay panel includes peripheral edges affixed to the peripheral edges of the vent panel. The underlay panel includes a slit extending along a vent axis, wherein the slit includes a selectively operable closure assembly extending therealong.

The invention discloses a snail-like centrifugal ventilation device, and aims to provide the snail-like centrifugal ventilation device which can improve the ventilation volume of an air purification system and the working efficiency of the system. The snail-like centrifugal ventilation device comprises a main ventilation pipe (1) and an air inducing pipe (2), wherein the front half part of the main ventilation pipe (1) is circular, and the rear half part of the main ventilation pipe (1) is a reducing conical part; a port of the front half part of the main ventilation pipe (1) is sealed, and the port of the rear half part of the main ventilation pipe (1) is an air outlet (10); the side wall of the rear half part of the main ventilation pipe (1) is provided with a plurality of small holes (11); and the air inducing pipe (2) is communicated with the front half part of the main ventilation pipe (1), is perpendicular to the main ventilation pipe (1) and is tangent to the main ventilation pipe (1). The ventilation device can be widely applied to purification systems.

The invention provides a coal mill. The coal mill comprises a grinding device, wherein the grinding device comprises a grinding roller assembly and a grinding disc assembly; the grinding roller assembly comprises a grinding roller and a roller sleeve of the grinding roller; the grinding disc assembly is provided with a lining plate. The coal mill is characterized in that the width of the roller sleeve of the grinding roller is at least increased by 6% to 8% on the previous basis and the wrap angle of the roller sleeve is at least reduced by 18% to 20% on the previous basis; the wrap angle of the lining plate is at least reduced by 16% to 18% on the previous basis, and the circular arc radius of the lining plate is at least increased by 23% to 25% on the previous basis. Compared with the prior art, the coal mill has the beneficial effects that on the basis of a conventional type ZGM middle-speed coal mill, grinding and separating targets of the ZGM middle-speed coal mill are changed through technical improvement in the aspects of optimizing a grinding type molded line, a nozzle ring structure, a rotary separator structure, a hydraulic loading device and the like; the requirements of crushing, grinding, drying and separating rough grain coal powder (D50=0.4-0.5mm) ground by the ZGM middle-speed coal mill are completely met.

The invention provides a blower for an orchard. The blower comprises a power source, a fan and a hollow pipe tower arranged vertically. A transmission shaft is vertically arranged in the pipe tower, a rotatable top end spindle box is arranged at the top of the pipe tower, the power source is connected with the transmission shaft through a speed reducing steering mechanism, the other end of the transmission shaft is connected with the top end spindle box, a spindle is horizontally arranged on the top end spindle box, and the fan is installed on the spindle. When the blower works, the power source drives the spindle to rotate through the transmission shaft, and meanwhile the spindle drives the top end spindle box to rotate through the speed reducing steering mechanism. The blower can blow air to the crowns of fruit trees from the high position, a physical disturbance method is utilized to mix air in the upper layer and the lower layer in small environment of the orchard to increase ventilation quantity of the fruit trees, peripheral temperatures of all the fruit trees in the orchard are adjusted to be consistent, growth of the fruit trees is facilitated, the fruit quality is improved, and the fruit trees can be prevented from damage caused by frost or low temperature.

The invention discloses a heat-dissipation rain-proof power distribution cabinet which comprises a cabinet body, a top cover and a cross-flow fan, wherein the cabinet body is connected with a cabinet door by a hinge; a transparency window is formed in the upper part of the cabinet door; the position of the transparency window is corresponding to that of a circuit breaker in the cabinet body; a self-locking handle connected with the cabinet body is arranged on the cabinet door; a slot is formed in one side of the bottom of the cabinet body; guide rails are arranged at the bottom of the slot; the cross-flow fan is arranged on the guide rails in a sliding manner; air inlets are formed in the right side of the cross-flow fan; fly nets are arranged in the air inlets in a welded manner; an air outlet is formed in the upper end of the cross-flow fan; the top cover is fixedly arranged on the cabinet body; and heat-dissipation fins formed through single-process punching are arranged on the top cover in a relatively inclined manner. The cabinet is provided with the cross-flow fan and is simple in structure; ventilating, water-proof, dust-proof and fly-proof functions of equipment are improved; automatic air supply for equipment cooling or dehumidification can be performed when a climatic condition and a ventilating condition are not ideal, so that normal operation of the equipment is guaranteed.

A refrigeration cycle apparatus includes a compressor, a condenser such as an indoor heat exchanger, first expansion means, and an evaporator such as an outdoor heat exchanger that are connected by refrigerant pipes to form a refrigeration cycle. The evaporator is a heat exchanger including a plurality of plate-like heat transfer fins arranged in parallel and subjected to water slip or water repellent treatment, and a heat transfer tube provided in contact with the plurality of heat transfer fins such that refrigerant flows therein. The refrigeration cycle apparatus further includes a drain pan disposed below the evaporator, an evaporator fan for producing an air current flowing to the evaporator, such as an outdoor fan, and a heating unit disposed at a position below the heat transfer fins and on a leeward side of the heat transfer fins.

The invention discloses a cultivation method capable of enhancing a corn yield. Big ridges and small ridges are adopted to form mixed and combined ridges, the big ridges are 150-170cm wide, the small ridges are 25-45cm wide, and the directions of the ridges are 18-20 degrees to the west of magnetic south. According to the method, one large ridge is spaced when every two small ridges are used for cultivation, so that the rate of ventilation is increased, and the number of plants is increased by 10%; light illumination is good, water temperature is high, and accumulated temperature is high; pest and disease damage can be reduced, and lodging is resistant; in the second year and the third year, the small ridges for the cultivation are sequentially arranged in the big ridges spaced in the first year, and the ridge positions in the fourth year repeat those in the first year. Land nutrients are fully utilized, and therefore the purpose of the high corn yield is achieved. The average growing rate of the annual per-unit yield of corns can reach 15%-17%, and the corn yield per hectare can be increased by 2500 kilograms.

The invention relates to the technical field of ventilation opening and provides a ventilation grille, an inlet air filtering device and a traction motor cooling system for rail transit, wherein the ventilation grille comprises a plurality of grille bars; the grille bars comprise first stopping plates, second stopping plates and connecting plates; the first stopping plates are positioned on the external sides of the connecting plates and the top ends of the first stopping plates are connected with the connecting plates; the second stopping plates are positioned on the internal sides of the connecting plates and the bottom ends of the second stopping plates are connected with the connecting plates; and the bottom end of the first stopping plate of the grille bar on the upside is not higherthan the top end of the second stopping plate of the grille bar on the downside. The ventilation grille has the advantages that the grille bars occupy small area, the ventilation quantities of the grille bars are large and the wind resistances of the grille bars are small. And moreover, on the basis of controlling the area of an air inlet, the gaps between the adjacent connecting plates can be made larger to reduce the air speed so as to control noises. Except for these advantages, the ventilation grille also has the advantage that the position relationships of the adjacent grille bars form aspecial air duct to guarantee that impurities are not easy to pass through the ventilation grille to enter in an air inlet passage.

The invention discloses a ventilation plate rotary connection structure, which comprises an inner frame, a rotary connection assembly and a ventilation plate. The rotary connection assembly is arranged on the inner frame and is connected with the ventilation plate; the ventilation plate can rotate relative to the inner frame through the rotary connection assembly; the rotary connection assembly comprises a connecting piece, a fixed seat and a hinged assembly, wherein the connecting piece is arranged on the ventilation plate; the fixed seat is arranged on a mounting surface of the inner frame; and the hinged assembly is arranged on the fixed seat and one end of the hinged assembly can be rotatably connected with the connecting piece. The invention also discloses a window employing the ventilation plate rotary connection structure. Compared with the prior art, the invention has the advantages that: by adopting a novel rotary connection assembly, air can enter a room from two sides of the ventilation plate when the ventilation plate is opened, the ventilation quantity is greatly improved, and the indoor and outdoor air exchange effect is ideal.

The invention provides a car skylight sun shield capable of preventing a falling object and ventilating. The car skylight sun shield capable of preventing the falling object and ventilating comprises a car skylight frame, and a piece of skylight glass which is mounted into the car skylight frame; a concave groove is arranged in the skylight frame, corresponding to the lower end of the piece of skylight glass; a sun shield body is arranged in the concave groove and used in match with the concave groove; a chute which is used in match with the concave groove is arranged in the sun shield body; two U-shaped pulling grooves are uniformly arranged in one side of the sun shield body, corresponding to an opening port of the piece of car skylight glass; tapered push-pull handles are arranged in the middle parts of the two U-shaped pulling grooves; a plurality of reinforcing ribs are lengthways arranged on the sun shield body; a plurality of groups of ventilating holes are arranged in the sun shield body; gauze elements are adhered into the ventilating holes. According to the car skylight sun shield capable of preventing the falling object and ventilating, the structure of the traditional sun shield is changed, the ventilating performance of the sun shield is improved, the sundries can be prevented from falling into a car, and therefore the sanitation and comfort level in a cab can be further improved; in addition, the risk that an object falls from a high place can be effectively prevented, and the safety performance of driving the car can be effectively improved.

The invention discloses a multifunctional whole-vehicle automobile protection cover which comprises a fixing frame and a cover body sewn on the supporting frame. The fixing frame is composed of a plurality of supporting rods, ventilation ports are arranged on two sides of the cover body, the supporting rods are made of a memory material, the tail ends of the supporting rods are fixedly connected with an automobile body through arranged connecting members, and an isolating space is formed between the fixing frame and the automobile body. By adopting the supporting rods made of the memory material and the cover body made of a multilayer special material to enable an interval of certain distance to be formed between the protection cover and the automobile body, so that ventilative, waterproof, sunproof and heat-insulating functions are greatly improved; compared with common movable garages, the protection cover has the advantages of small occupied space, simple structure, convenience in mounting and demounting and high portability; due to the characteristic of easiness to carry and set up, the protection cover can be used as a traveling tent; the cover body can serve as an advertisement carrier.

The invention relates to the technical field of cell engineering of bioengineering, in particular to a cell perfusion culture method for a mini model based on a Tubespin bioreactor. The cell perfusionculture method for the mini model based on the Tubespin bioreactor comprises the following steps that cells are inoculated into the Tubespin bioreactor, the volume of cell sap accounts for 20-30% ofthe volume of the Tubespin bioreactor, the inclination angle of the Tubespin bioreactor is 60-90 degrees, and under the shaking condition, perfusion culture is conducted. According to the cell perfusion culture method, culture parameters of the Tubespin bioreactor are regulated and controlled, the ventilation amount of the Tubespin bioreactor is increased, shearing is reduced, and beneficial conditions are provided for high-density culture; meanwhile, the continuous perfusion culture process can be simulated, redundant cells are removed every day, centrifugation and liquid exchange are conducted, and the growth and yield of the cells are monitored, so that the culture process enters multiple steady states.

The invention discloses a method for adding feather fiber for making air filtering paper applied in the automobile industry. According to the method, hardwood pulp, softwood pulp and feather fiber pulp are mixed uniformly, a fast paper forming device is used for papermaking, then a paper blank is dried in a dryer, and an air filtering paper blank is prepared; styrene-acrylic emulsion and hydroxylsilicone oil emulsion are diluted by deionized water separately and then placed in soaking tanks respectively, the air filtering paper blank is soaked in the diluted styrene-acrylic emulsion at first,redundant emulsion on the paper blank is filtered off by a glue applying machine, and then the paper blank is dried on the dryer; then, the air filtering paper blank is placed into the diluted hydroxyl silicone oil emulsion for soaking, redundant emulsion on the paper is filtered off by the glue applying machine, then the paper blank is dried on a rotating drum type drier and put into a drying box for drying and solidification, and correspondingly the air filtering paper is prepared. The hydroxyl silicone oil emulsion can obviously improve the waterproof performance and dust holding capacityof the filtering paper. Since hydroxyl silicone oil has natural waterproof performance, the filtering paper has excellent waterproof performance, and especially through application of an adhesive structure, the dust holding capacity of the filtering paper is substantially increased.

The invention provides a fertilizer for preventing canker of Citrus maxima(Burm.) Merr. cv. Shatian Yu. and a preparing method thereof, and belongs to the technical field of agricultural fertilizers. The fertilizer is prepared form, by weight, 15-25 parts of peat soil, 30-40 parts of haiwu dung, 5-15 parts of Celastrus angulatus, 11-20 parts of extracting solution of Tithonia diversifolia A. Gray, 10-19 parts of volatile oil of Chenopodium ambrosioides L, 25-35 parts of maifan mineral, 10-18 parts of Calcium nitrate, 9-16 parts of plant ash, 12-22 parts of ardealite, 6-12 parts of hybrid strain powder, and 2-8 parts of microelement. By Making full use of the principle of scientific concerted application, the fertilizer for preventing canker of Citrus maxima(Burm.) Merr. cv. Shatian Yu. can effectively prevent canker of Citrus maxima(Burm.) Merr. cv. Shatian Yu., and prevent the fruit from being invaded by diseases, and meanwhile provides Citrus maxima(Burm.) Merr. cv. Shatian Yu. with nutrient elements necessary for growing period according to different characteristics in different period. Therefore, fertilizer efficiency can last longer and yield of Citrus maxima(Burm.) Merr. cv. Shatian Yu. is improved. Beside, through making use of invasive plant, that is, carrying out comprehensive control on the invasive plant to improve utilization percentage, the fertilizer for preventing canker of Citrus maxima(Burm.) Merr. cv. Shatian Yu. can effectively improve soil environment and prevent soil hardening.

The invention provides a germinating box and an akebia trifoliate seedling propagation method, and relate to the technical field of plant seedling raising. According to the germinating box provided by the invention, a ventilation unit is arranged in a box body and is communicated with a bottom wall, so that favorable ventilation and water penetration functions can be realized, and appropriate ventilation and humidity are provided for seed germination. According to the method for utilizing the germinating box for carrying out akebia trifoliate seed germination treatment provided by the invention, the capacities such as ventilation, light sheltering, heat preservation and moisture preservation of a germination medium are further improved, the germination percentage of seeds is high, seed sowing and taking operation can be carried out simply and conveniently, the seed sprouting white-exposing rate is high, the manpower is saved, and meanwhile, the seed loss rate is reduced. According to the akebia trifoliate seedling propagation method provided by the invention, seeds in the same type of more generation inbreeding orchard fruits are utilized for propagating seedlings, so that on the premise of ensuring offspring inheritable characters to be relatively uniform, the seedling propagation coefficient is big, the seedling supply capacity is high, the seedling quality is high, the characters of future generation plants and fruits have higher consistency, and the commodification of fruits is good.

The invention discloses a dustproof and moisture-proof charging device for an electronic product, comprising a base. A fixed pile is fixed on a top outer wall of the base by bolts, and a support rod is welded on the top outer wall of the fixed pile. The outer walls of two sides of the support rod are each welded with a protective device, the protective device comprises a top plate, the top outer wall of the top plate is fixedly provided with a solar cell panel through bolts, the bottom outer wall of the top plate is welded with a dustproof plate, and the outer walls of two sides of the supportrod are each welded with a telescopic device. The dustproof and moisture-proof charging device improves the effect of ventilation and dust resistance, improves the dustproof and moistureproof capacity of the device, improves the practicability of the device, and enables the device to absorb and store solar energy, plays the role of energy conservation and environmental protection, so that new energy is rationally utilized, and the environmental pollution is reduced, automatic power cutting is achieved by the processor, the probability of accident fans is reduced, and the protection of human life is improved.

The invention discloses a hanger for increasing the internal space of clothing during drying. The hanger comprises a hanger hook, hanger arms and a supporting rod, wherein the hanger arms and the supporting rod and the hanger hook are connected into a whole. The hanger is characterized in that each hanger arm and the supporting rod are formed by two thin rods respectively, wherein every two corresponding thin rods are separated from each other in the horizontal direction; a plurality of reinforcing rods are arranged between every two corresponding thin rods; one end of each hanger arm and the supporting rod are connected into a whole; the other end of each hanger arm is flexibly snapped to the supporting rod. According to the hanger for increasing the internal space of the clothing during drying, the internal space of the dried clothing can be increased and accordingly the ventilation is improved, the drying time of the clothing is shortened, and accordingly the time and the effort are saved and the clothing deformation can be reduced, the clothing can be neatly dried without too much finishing, the structure is simple, the use is convenient, and the cost is low.

The present invention relates to a split type sun shading hat with a solar energy power generation function. The split type sun shading hat comprises a hat frame, an assembly hat top arranged at the upper part of the hat frame, a sun shading plate arranged at a side portion of the hat frame, and a solar energy power storage device; the hat frame includes a bottom frame of an annulus structure and at least one arc-shaped stay which spans the bottom frame, hollow openings being formed between the adjacent arc-shaped stays; and the solar energy power storage device comprises a box body arranged on the bottom surface of the sun shading plate, a photovoltaic panel arranged at the upper end surface of the sun shading plate, a conversion circuit arranged on the box body, a lithium battery and a USB charging interface arranged at a side portion of the box body, wherein the photovoltaic panel, the lithium battery and the USB charging interface are all electrically connected with the conversion circuit. According to the split type sun shading hat with the solar energy power generation function of the invention, the fixed hat frame and the dismountable hat top are adopted, so that a user can change and combine the style of the hat top at any time according to needs, and the hat is beautiful; the hat has a power storage function and can charge an electronic device at any time; and the hat is convenient to use.

The invention discloses a rain-area dry and wet mixed cooling system with internal and external coordination of a natural draft wet cooling tower. The rain-area dry and wet mixed cooling system comprises the natural draft wet cooling tower, and a plurality of flow distribution plates are arranged in the rain area of the natural draft wet cooling tower. Each flow distribution plate is of a plate-shape structure, one end of the flow distribution plate is connected onto a tower wall of the natural draft wet cooling tower, and the other end of the flow distribution plate points to the adjacent flow distribution plate. The two sides of each flow distribution plate are arranged obliquely, and one side, close to the tower wall of the cooling tower, of the flow distribution plate is lower than theother side of the flow distribution plate. All the flow distribution plates show rotational symmetry about the center of the radial section of the super large wet cooling tower. The part of the rainarea covered by one flow distribution plate forms a dry area, and an air inlet in the bottom of the natural draft wet cooling tower is divided into a plurality of dry area inlets and a plurality of rain area inlets by a plurality of dry areas. Air deflectors are vertically arranged on the two sides of the ground of each dry area inlet, and the air deflectors are arranged on the outer side of the tower wall.

The invention provides a water-cooling combustion fire grate for a biological energy source. The water-cooling combustion fire grate for the biological energy source comprises a machine frame and a fuel feeding hopper; the machine frame is arranged as a slope; and a first combustion air inlet chamber, a second combustion air inlet chamber and a third combustion air inlet chamber are formed in themachine frame in sequence. According to the water-cooling combustion fire grate for the biological energy source provided by the invention, a driving device drives a transmission device and a rotatingdevice to rotate to perform certain stirring on biofuels, so that un-combusted part of the biofuels is exposed in the combustion chamber to combust fully; sleeve rings which are connected rotatably rotate after being in contact with the biofuels to drive the biofuel to rise at a certain height, so that the biofuels become looser; meanwhile, the ventilation quantity is increased through the ventilating holes formed in the fire grate, so that the biofuels are further combusted fully; and therefore, the combustion efficiency is improved.

The invention relates to a laundry rack, in particular to a domestic multifunctional laundry rack. Bed sheets, quilt covers and other large articles of daily use can be conveniently hung and air-dried, the laundry rack is also provided with a ventilation device and a propping device, so that the ventilation of the position under clothes is promoted and the clothes are quickly air-fried; the heightof supporting rods can also be adjusted, so that different lengths of clothes are convenient to hung. Sliding blocks II cooperate with supporting rod main bodies; the ventilation device is fixedly connected to the lower ends of the supporting rod main bodies through bolts; fixing devices are arranged on the supporting rod main bodies; fixed blocks II are fixedly connected to the outer sides of vertical rods through bonding; circular rings I are fixedly connected to the sides of sliding blocks I through welding; circular rings II are fixedly connected to the sides of the sliding blocks II through welding; a base plate is fixedly connected to the outer side of a base through welding; connecting rods cooperate with movable blocks I and fixed blocks I; the lower end of a fixed cylinder is fixedly connected to the upper end of an arc-shaped plate through welding.

The invention provides a multifunctional bottom rack and a cupboard. The multifunctional bottom rack comprises a rack. The rack is of a frame-shaped structure, a ventilation assembly is arranged on the rack, an air inlet which is connected with a motor is formed in one end of the ventilation assembly, and an air outlet is formed in the other end of the ventilation assembly. The multifunctional bottom rack and the cupboard have the advantages that the ventilation assembly is arranged on the rack, accordingly, the ventilation rate of the bottom of the cupboard with the multifunctional bottom rack can be increased, humid environments in kitchen spaces can be improved, bacteria or mold can be prevented from being bred at the bottom of the cupboard, and the safety of kitchenware arranged in thecupboard can be improved.

The invention relates to the technical field of textiles, in particular to a bristled fabric with a three-dimensional effect and a preparation process of the bristled fabric. According to the bristled fabric with the three-dimensional effect and the preparation process of the bristled fabric, a weft knitting double-sided machine is adopted, the thread length and the coil compactness of a concave part and a convex part are set through a knitting process, the thread length of the concave part is shorter, the coil is looser, the thread length of the convex part is longer, and the coil is tighter. A plurality of micro holes are formed in a first base layer and a joint of the concave part and the convex part, so that an air convection channel can be provided, and ventilation is enhanced. Therefore, the whole fabric not only has the three-dimensional effect formed by combining the concave parts and the convex parts, but also has soft fleece touch and visual effects formed by brushing treatment, and can prolong air retention and enhance heat preservation. Meanwhile, if yarns with more than two colors are adopted in the fabric, the fabric can present a double-color or multi-color effect with different colors of the concave parts and the convex parts, and the more colorful three-dimensional bristle fabric is provided.

The invention relates to a ventilator, in particular to a fireproof thin roof ventilator which comprises mounting frames. An emergency ventilation mechanism is arranged on the mounting frames, the emergency ventilation mechanism comprises a mounting plate fixed between the mounting frames, a transverse plate fixed to the mounting plate through a mounting seat and a top plate fixed to the transverse plate, and a through groove is formed in the mounting frame; and a sliding rail is fixed to the inner wall of the through groove, a moving plate matched with the transverse plate is slidably connected to the sliding rail, and a first driving mechanism used for driving the moving plate is arranged on the mounting plate. According to the fireproof thin roof ventilator in the technical scheme, thedefects that in the prior art, the ventilation quantity cannot be adjusted, and the waterproof performance is poor can be effectively overcome.

The invention discloses a combustion device, and aims to provide a combustion device with the high combustion efficiency. The combustion device comprises a frame body, a box body arranged on the framebody, a combustion pipe arranged on the box body, a spiral conveyer arranged on the box body, a draught fan of which an air outlet communicates with an inner cavity of the box body, an air distribution pipe shell which sleeves the combustion pipe and is fixedly connected with the box body, an igniter and a material pushing mechanism, wherein the igniter is arranged on the box body in a penetration mode, and the heating end of the igniter is located at the lower portion of the interior of the combustion pipe; the end, exhausting hot smoke, of the combustion pipe serves as a front end, and theother end of the combustion pipe serves as a rear end; the combustion pipe comprises an upper arc plate, and a lower arc plate which is connected with the lower end of the upper arc plate to form a combustion cavity; the diameter of the lower arc plate is smaller than that of the upper arc plate; the pipe wall of the lower portion of the combustion pipe is provided with a plurality of ventilationholes; the material pushing mechanism comprises a screw which penetrates through the box body, stretches into the combustion pipe and extends to the front end of the combustion pipe, and a gear motordriving the screw to rotate; and the screw is a hollow rod.