4results about How to "Increase the suction area" patented technology

The utility model relates to a kind of nonwoven fabric paving net negative pressure air suction device of adjustable, including negative pressure box, the outside of the negative pressure box is fixedly connected with negative pressure pipe, the top of the negative pressure box is set to opening, the top of the negative pressure box is fixedly connected with support plate, multiple sets of second negative pressure holes are equipped on the support plate, the position of corresponding second negative pressure hole on the support plate is equipped with sliding groove, the sliding groove is communicated with second negative pressure hole, sliding connection is achieved in the sliding groove with sliding plate, the outside of the sliding plate is fixedly connected with multiple sets of adjusting plate;In the utility model, according to the different types of nonwoven fabric adjustment air suction area, push sliding plate to slide, sliding plate drives adjusting plate to slide, adjusting plate slides adjustment, so second negative pressure hole's air suction area can be adjusted;Again open negative pressure fan, negative pressure fan is inhaled air in negative pressure box by negative pressure pipe, generates negative pressure;So sliding plate can be flexibly changed air suction area size in sliding process.

The utility model discloses a melon interspecific hybrid tissue culture seedling domestication device relates to plant seedling domestication device technical field. Its structure includes nutrient solution groove, matrix groove, double -deck light -transmitting light -supplementing cover and ventilation adjustment assembly, and the matrix groove is installed in the nutrient solution groove, and ventilation adjustment assembly is installed on the nutrient solution groove and matrix groove, and ventilation adjustment assembly divides matrix groove and is divided into a plurality of seedling domestication area, and every seedling domestication area installs a double -deck light -transmitting light -supplementing cover. The utility model discloses through double -deck light -transmitting light -supplementing cover and temperature feedback system realizes environment accurate control, adopts M shape cotton line, filter cotton section constructs microcirculation nutrition supply system, and combines the partition formula modular design and promotes space utilization rate and operating efficiency, and the device is verified through the test, can make interspecific hybrid domestication survival rate to improve, and domestication period shortens, provides efficient technical solution for melon interspecific hybrid breeding.

This invention discloses a waterproof and heat-dissipating integrated cable branch box structure, relating to the field of cable branch boxes. It includes a supporting base, a waterproof base fixedly installed on the upper surface of the supporting base, and a branch box fixedly installed on the upper surface of the waterproof base. An opening is provided in the center of the front face of the branch box, and a door is rotatably installed on the side of the front face of the branch box near the opening via a bearing. Several heat dissipation holes are provided through the bottom of both sides of the branch box. The waterproof mechanism solves the problem of backflow into the bottom of existing branch boxes. When water accumulates outdoors, a hollow float, driven by buoyancy, causes the connecting frame and waterproof cloth to rise synchronously. The folded waterproof cloth unfolds to form a ring-shaped waterproof barrier around the bottom of the branch box, preventing water from flowing back to the bottom of the box. The drainage holes can promptly drain small amounts of water from the fixed inner groove, preventing the waterproof cloth from aging due to long-term soaking, improving waterproof reliability, reducing component failures caused by rainwater immersion, and lowering the maintenance frequency.