30results about How to "Simple in structure and totally functional" patented technology

The invention relates to a vertical lifting dryer outside swing door driven by a linear moving single cylinder. A dryer outside swing door device comprises a cylinder rack (200) arranged on a dryer (100) and fixed with a cylinder driver (300), wherein the inner wall of the dryer (100) is provided with a guide rail (400) and a device door outside swing mechanism (500) connected with the cylinder driver (300); and the device also comprises a device door (600) moving vertically up and down on the guide rail (400) and connected with the device door outside swing mechanism (500) and a supporting plate (700) arranged below the device door (600). The dryer outside swing door device has reasonable design, simple structure and full practicability, and can achieve outside swing by means of the deadweight of the device door; the outside swing distance of the device door is controlled by means of the inclined plane on a special-shaped block body, and the purpose of controlling the outside swing distance can be fulfilled by changing the angle of the inclined plane; and the device is convenient to maintain and stable and reliable in work.

The invention relates to an adjustable constant current drive circuit, which belongs to the technical field of laser control, in particular to an adjustable constant current drive circuit for semiconductor lasers with temperature compensation. Including: operational amplifier U10, MOS tube Q19, and laser LD connected in sequence, the positive input terminal of operational amplifier U10 is connected to the power supply input terminal through resistor R3, and the two ends of resistor R3 are connected to an NTC-type thermistor R2 with a negative temperature coefficient They are connected in parallel, and the thermistor R2 is located on the heat dissipation shell of the laser LD. Therefore, the present invention has the following advantages: 1. Improve the instability of the output of the laser caused by the influence of temperature factors in common constant current mode. 2. The structure is simple and completely practical.

The invention relates to a maintenance-free air cooler, which comprises at least one spiral cooling element and support plates, wherein the at least one spiral cooling element is formed by connecting a plurality of cooling pipes end to end in series to form annular shapes and laminating the annular shapes; the support plates are arranged on the two sides of the cooling element; one end of the support plate is fixed with a mounting plate positioned at the upper end of the cooling element, and the other end of the support plate is fixed with an end plate positioned at the lower end of the cooling element; the inlet and outlet ends of the cooling element are both connected with a connecting pipe by collecting pipes; and a connecting flange is also arranged on the connecting pipe. The maintenance-free air cooler has the advantages of rational design, simple structure, no maintenance, service life as long as that of a large-scale motor, and favorability for improving the running reliability of the large-scale motor.

A prefabricated composite wall panel, the heat insulation wall includes a first wall panel and a second wall panel, the wall panel includes a straw board base and a magnesite board, and the straw board base and the magnesite board pass through a hollow nut and a locking bolt connection, the inside of the heat insulation wall is provided with a keel frame, the long nut is locked on the keel frame through the hollow nut, and a shock absorber is provided between the wallboard and the keel frame, and the long nut passes through Shock-absorbing pad, the base side of the straw board is provided with glass fiber mesh cloth, the outer surface of the glass fiber mesh cloth is coated with waterproof paint, and the base side of the straw board is threaded and locked with the magnesite board through a hollow nut , does not need traditional structure for pasting, it is convenient to replace magnesite board, and multi-layer wall board can meet high heat preservation, heat insulation and fire protection requirements, and achieve the purpose of green environmental protection and energy saving. Use straw board to replace traditional osb slab, autoclaved light sand aerated concrete slab, etc., to further improve the fire resistance level.

The invention relates to a propulsion unit, in particular to a novel improved propulsion unit for a ship. The novel propulsion unit for the ship is characterized by comprising a first propulsion cylinder bar barrel (1) capable of containing a propeller of the ship and a connecting shaft connected with the propeller, a second propulsion cylinder bar barrel (2), a third propulsion cylinder bar barrel (3) and a control system used for controlling the first propulsion cylinder bar barrel (1), the second propulsion cylinder bar barrel (2) and the third propulsion cylinder bar barrel (3), wherein the second propulsion cylinder bar barrel (2) and the third propulsion cylinder bar barrel (3) are arranged at two sides of the propeller and communicated with the inside of the first propulsion cylinder bar barrel (1). Consequently, the invention has the advantages as follows: 1, the propulsion unit is rational in design, simple in structure and completely practical; and 2, the propulsion unit can run transversely and steer for 360 degrees without a rudder.