3results about How to "Does not affect cost" patented technology

The utility model belongs to the technical field of washing liquid boxes, and particularly relates to a liquid inlet filtering structure of a washing liquid box, and a liquid inlet is formed in a liquid storage cavity of the washing liquid box; the liquid inlet filtering structure is mounted on the liquid inlet; the liquid inlet filtering structure comprises a circular connecting plug, a U-shaped frame and an arched filter screen; a U-shaped opening of the U-shaped frame faces upwards and is connected to the upper end of the circular connecting plug, and the circular connecting plug is communicated with a U-shaped cavity of the U-shaped frame; the circular inserting head is matched with the liquid inlet in an inserting manner; the arched filter screen is mounted on the U-shaped frame and covers the U-shaped cavity, and the edge of the arched filter screen is connected with the edge of the U-shaped frame. According to the scheme, the liquid inlet filtering structure is simple in structure, can be mounted on washing liquid boxes with different capacities, and can be independently dismounted and mounted; moreover, the liquid inlet filtering structure adopts the arched filter screen, so that the filtering efficiency of the washing liquid can be improved, and particles in the washing liquid can be filtered, and are prevented from entering the negative pressure liquid suction device to influence the normal use of the washing liquid box.

Maintaining the characteristics of the power amplifier circuit without affecting cost. The power amplifier circuit has multiple amplification stages, including: a first amplification stage that amplifies the input high-frequency signal; a second amplification stage that amplifies the output of the first amplification stage; and a switching stage disposed on the power supply path to the first amplification stage, wherein power is supplied to the first amplification stage via the switching stage, and the switching stage sets the power supply to the first amplification stage to be on or off, and the power is directly supplied to the second amplification stage without passing through the switching stage.

The utility model provides a dam body panel surface water stopping and ice damage preventing device, and relates to the technical field of dam body protection, the dam body panel surface water stopping and ice damage preventing device comprises an air bag and a lifting appliance, one end of the lifting appliance is connected with the air bag, and the other end of the lifting appliance is used for being connected with a rivet on a wave wall; the air bag is of a double-layer structure and comprises an air bag upper layer and an air bag lower layer, the air bag upper layer is used for being filled with air, the air bag lower layer is used for being filled with counterweight fine sand, and the air bag lower layer is used for abutting against a panel and a surface water stop structure located on the panel. Compared with the prior art, the dam body panel surface water stopping and ice damage preventing device does not need to add a cast-in-place concrete anti-collision ridge or drill holes to install prefabricated anti-collision strips on the panel, does not damage the panel structure, and only needs to place the device on the panel surface of a water level amplitude variation area and a surface water stopping structure in the freezing period in winter, so that the water stopping and ice damage preventing device can be used for preventing ice damage. And the ice layer cannot be in contact with the surface water stop structure, so that the effect of protecting the surface water stop structure is achieved.