42results about How to "Speed up ventilation" patented technology

The present invention relates to a gas detection and automatic fan control system for a coal mine, and comprises an exhaust fan; the input end of the fan is connected with a transducer which is connected with the output end of a SCM through a data/ mode converter; the input end of the SCM is connected with a gas consistency sensor through the data/mode converter and a safety fence which are connected in order; the another input and output of the SCM are respectively also connected with corresponding keypads and a LED which shows the measured consistency and sets the consistency. The present invention can realize a normal low-power operation of ventilation during the absence of gas, thereby saving energy; and as the increasing of the gas consistency, the fan can operate and ventilate in high speed, thereby reducing the gas temperature in very short time, preventing the gas explosion and safeguarding the life security.

The invention mainly discloses a constant-temperature silkworm frame applied to bombyx mori cocooning. The constant-temperature silkworm frame comprises a bottom frame, a silkworm breeding frame, a feeding frame, a ventilating frame and a top board which are arranged from bottom to top. A first heating device is disposed in the silkworm breeding frame. The first heating device comprises a thermal insulation board, a heating plate, a warming plate and a temperature-sensitive plate. Side portions of the feeding frame are provided with feeding holes, and a feeding plate is disposed in each feeding hole. Front and back sides of the ventilating frame are uniformly provided with air vents. An upper portion of the right side of the ventilating frame is provided with a slot. The top board is inserted into the slot to cover the ventilating frame. The top board is provided with a second heating device and a power supply device. The second heating device comprises a heating lamp, a temperature-sensitive rod, a display screen and an adjusting button. The heating lamp is installed at a lower surface of the top board. The temperature-sensitive rod is movably connected to the top board via a movable plate. Temperature of a silkworm breeding environment is strictly controlled, a good survival environment is provided for silkworms, survival rates of the silkworms are improved, feeding is convenient, permeability is good, cultivation space is large, breeding efficiency is high, and the constant-temperature silkworm frame is suitable for large-scale silkworm breeding.

The present invention relates to a synthetic ventilating system using the heat exchanging system in the indoor ventilating system including a heat exchanging system and a controller, it is characterized in that it includes the following components: a main air supply pipe which supplies outdoor air to the indoor room; an electric valve which only does air supplying to the kitchen area when the kitchen air exhausting cover works; a first auxiliary air supply pipe which is connected with the bedroom area; a second auxiliary air supply pipe which is connected with the kitchen area; a first flexible pipe which supplies air to the bedroom area and the kitchen area; and a second flexible pipe which sucks air from the bedroom area and kitchen area. According to the invention the air feeding room is respectively divided to an apartment and a kitchen (including a parlor), the system only provides air to the kitchen to do air changing when the air exhausting cover of the kitchen works thereby restricting the diffusing of the pollutant and accelerating the air changing. Besides, the acoustic material is arranged at the venting pipe thereby preventing the operating noise of the transferring heat exchanging device and therefore the system provides a comfortable surrounding.

The invention discloses a large Mongolian yurt. The large Mongolian yurt has a steel frame structure, so that the bearing capacity, the firmness and the stability of the Mongolian yurt are greatly improved, and the requirement of the large Mongolian yurt can be met without arranging upright posts in the large Mongolian yurt. An inner and outer ring top structure is adopted, so that the Mongolian yurt has a double-layer top visually, and the inner space is increased; meanwhile, ventilating and lighting windows are arranged at second-layer upright posts to ensure the ventilation and lighting of the Mongolian yurt. A central top is a lifting top to enhance the lighting, ventilation and air exchange of the Mongolian yurt. A Mongolian yurt frame adopts a structure that many unit steel frames are connected and combined through bolts as far as possible, is suitable for the large Mongolian yurt and industrial volume production and is convenient to transport, set up and roll up. A base is dampproof and enables the setup of the Mongolian yurt not to destroy the original grassland. The large Mongolian yurt maintains the characteristics of the traditional Mongolian yurt, improves the traditional Mongolian yurt, and is a large Mongolian yurt having both traditional and modern styles, and is particularly suitable for meetings, exhibitions and entertainment and dining places.

The invention discloses a window type air conditioning device, especially installed on the window of edifice. It includes window frame, carcass, indoor heat exchanger, air condition regulation section, and condensation water distributor. The invention could ventilate the air of the building fluently, and decrease the cost. It improves the use rate of the room space.

The invention discloses a multifunctional protective door and window, and belongs to the technical field of doors and windows. The multifunctional protective door and window comprises an outer frame,wherein an inner frame body is arranged in the outer frame, first chutes are formed in both sides of the inner frame body, the first chutes are located in the outer frame, and a first mounting bin isformed in the outer frame. According to the multifunctional protective door and window, the first mounting bin is formed in the outer frame, the first chutes which communicate with the first mountingbin are formed in the both sides of the inner frame body, and a driving mechanism in the mounting bin is matched with a transmission mechanism composed of a driving gear, a connecting rod, a toothed belt, a rack and a driven gear in the mounting bin, so that a protective rod can be driven to move in the first chutes, the position of the protective rod is adjusted, the protective rod is conveniently converted indoors and outdoors, and the use is convenient; the protective rod is arranged in the outer frame, so that the functionality and the protective effect of the device are increased, and potential safety hazards due to the installation of a protective fence on the outer side of the door and window are avoided.

The invention discloses a prevention and control method for tomato chlorosis virus disease. Tomatoes are cultivated in a sunlight greenhouse according to sizes, the large row spacing is 80cm, and thesmall row spacing is 60cm; trapping plants are transplanted before field planting of the tomatoes in 15-20 days, a row of the trapping plants is planted in the middle of small rows of field planting rows, and the plant spacing is 25 cm; substrate discs containing carbonized rice husks are used for the trapping plants to culture seedlings, carbonized rice husks are applied to planting pits, and thiamethoxam solution is used for disc dipping and root irrigation; before the trapping plants are transplanted, a 40-mesh insecticidal protective net is used for closing vents of the sunlight greenhouse. The prevention and control method can effectively reduce the incidence of tomato chlorosis viruses on the premise of greatly reducing chemical pesticide dosage and achieving non-contact chemical control of main crops, and the incidence of the chlorosis viruses in susceptible tomato varieties can generally be controlled within 4%.

The invention discloses a drying oven and a heat flow circulation control method, and belongs to the technical field of sample total moisture determination. The problem of low drying efficiency of a current drying oven is solved. According to the technical scheme, the drying oven comprises an oven body and a chamber formed by the oven body in an enclosing mode, and the chamber is internally provided with a separating plate used for dividing the chamber into a first chamber and a second chamber which are arranged up and down; one end of the first chamber is provided with a sample feeding door,and the end, relative to the sample feeding door, of the oven body is provided with a heating cavity; an exhaust port is formed at the position, close to the second chamber, on the heating cavity, andthe heating cavity is provided with a switching door switched between a first position and a second position is arranged at the position of the exhaust port; when the switching door is located at thesecond position, the communication position between the heating cavity and the second chamber is blocked by the switching door, and the exhaust port is opened for performing an outer circulation mode. According to the above technical scheme, the drying oven has the advantages of high drying efficiency and applicability and the like.

The present invention relates to a gas detection and automatic fan control system for a coal mine, and comprises an exhaust fan; the input of the fan is connected with a transducer which is connected with the output end of a SCM through a data/ mode converter; the input end of the SCM is connected with a gas consistency sensor through the data/mode converter and a safety fence which are connected in order; the another input and output of the SCM are respectively also connected with corresponding keypads and a LED which shows the measured consistency and sets the consistency. The present invention can realize a normal low-power operation of ventilation during the absence of gas, thereby saving energy; and as the increasing of the gas consistency, the fan can operate and ventilate in high speed, thereby reducing the gas temperature in very short time, preventing the gas explosion and safeguarding the life security.

The invention provides an intelligent agricultural maintenance management system based on Internet-of-Things control. The intelligent agricultural maintenance management system comprises a greenhousewall body, an air inlet hole, an air outlet hole, a sealing mechanism, a filtering mechanism, a temperature adjusting mechanism and a fan mechanism. The intelligent agricultural maintenance managementsystem based on Internet-of-Things control can solve the following problems in the agricultural maintenance management process that a, most ventilation devices related to agricultural greenhouses inthe current market are manually adjusted, the working intensity is relatively high, the environments in the greenhouses are basically controlled by human experience, and agricultural products are notmonitored in real time through an intelligent system; b, most existing ventilation devices do not adjust the temperature of air transmitted into the greenhouses from the outside, and the temperature is adjusted to the optimal temperature for the growth environment of the agricultural products; and c, the existing ventilation devices can only conduct ventilation and cannot effectively control the air speed, the situation that too high air speed affects production of the agricultural products and too low air speed cannot conduct effective ventilation is avoided.

The invention relates to a floatable comfortable high-elastic mattress, and belongs to the field of plastic products. The floatable comfortable high-elastic mattress comprises a mattress body, the mattress body comprises a first mattress layer and a second mattress layer which are arranged up and down, and the upper surface of the second mattress layer is provided with a groove group; the groove group comprises a plurality of grooves formed in the upper surface of the second mattress layer, the grooves are uniformly distributed in the upper surface of the second mattress layer in an array shape, through holes penetrating through the first mattress are formed in the first mattress corresponding to the grooves, and the diameter of each through hole is 0.5-1.5 mm; and two adjacent grooves in the groove group are communicated with each other through a channel, and the channel is embedded in the second mattress layer. The mattress has good elasticity and air permeability, and meanwhile has multiple purposes.

The invention relates to a parachute canopy ventilation speed obtaining method. Various factors such as surrounding airflow attributes in the high-altitude flight process of a parachute, parachute flight speed and fabric microstructure characteristics are comprehensively considered. Based on a porous medium theory and a parachute canopy differential pressure-flight dynamic pressure equation in theparachute working process, the parachute canopy ventilation speed at any speed-height in the high-altitude flight process of the parachute can be rapidly calculated, and therefore guidance is provided for further calculation of the total ventilation amount of the parachute and design of the parachute. The whole technical scheme design does not need to pass a fabric air permeability test, a brandnew design scheme is adopted, and the obtaining efficiency of the target parachute canopy ventilation speed can be effectively improved.

The invention discloses a safe elevator comprising an elevator shaft and a lift car; each layer of the elevator shaft is provided with an elevator opening; an elevator door is mounted at the elevator opening; the lift car is positioned inside the elevator shaft; even number of safe devices are mounted inside the elevator shaft; every two safe devices are set as a group, the safe devices of the same group are positioned at a same installation height, one is positioned at the elevator opening and the other is positioned at the other side, corresponding to the elevator opening, of the elevator shaft; the safe device comprises a cylinder, an extension spring and a support board; one end of the support board is hinged to the elevator shaft; one end of the extension spring is connected to the elevator shaft and the other end is connected to the support board; a pedestal of the cylinder is mounted on the elevator shaft; a push rod of the cylinder is hinged to the lower surface of the support board; the cylinders of all safe devices are connected to one controller; a switch of the controller is installed inside the lift car. By means of the safe elevator of the invention, falling accidents are avoided when elevator wire ropes are broken.

The invention provides a water-based open-edge beaded skin-feeling waxy synthetic leather, and relates to the field of synthetic leather. The water-based open-edge beaded skin-feeling waxy synthetic leather comprises an open-edge beaded layer, a first elastic layer is arranged in the open-edge beaded layer, and a reinforcing layer is arranged in the first elastic layer. When the synthetic leatheris used for making clothes, in order to avoid the layering of the synthetic leather in the use process, trapezoidal blocks are arranged on the first elastic layer and a second elastic layer; soft hairs are arranged on the two sides of the trapezoidal blocks; through the bonding of the glue, the overall strength of the synthetic leather is enhanced; air holes are arranged to increase the ventilation rate of the synthetic leather; the generated sweat can be absorbed by cotton blocks arranged in the air holes, the clothes are kept dry, when a large amount of sweat is generated, the sweat is discharged through an arranged one-way flow guide layer, the sweat is greatly absorbed through the cotton of a sweat absorption layer, and the situation that the sweat is retained for a long time, and a large amount of peculiar smells are generated is avoided.