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

The invention relates to a binder, in particular to structural improvement on a low-concentration sampling nozzle forceps clip binder. The low-concentration sampling nozzle forceps clip binder is characterized by comprising a base (1) and a rotation mechanism (4) arranged in the base (1); and a binding mechanism (5) used for binding a low-concentration sampling nozzle is arranged on the base (1). The low-concentration sampling nozzle forceps clip binder has the advantages of reasonable design, simple structure, quite practicality, convenience for operation, high working efficiency, uniform binding and high binding quality.

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 control device and a control method thereof, in particular to a double-feed fan excitation control device and a control method thereof. The double-feed fan excitation control device is characterized by comprising a wind power characteristic simulation device, and an AC excitation power generation device and a DSP (Digital Signal Processor) control device which are respectively connected with the wind power characteristic simulation device, an excitation potential device is also connected to the DSP control device, and the excitation potential device is connected with the AC excitation power generation device through an excitation conversion switch. Therefore, the double-feed fan excitation control device and the control method thereof disclosed by the invention have the advantages of reasonable design, simple design, complete practicability and capacities of being used for simulating a wind power generation system of a speed-variable constant-frequency AC excitation double-feed power generator and being used for teaching and scientific research.

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 binding apparatus, in particular to structural improvement on a low-concentration sampling nozzle binding apparatus. The low-concentration sampling nozzle binding apparatus is characterized by comprising a base (1) and a press cover (2) fixed on the base (1); and a slide block (3) which can do vertical and horizontal reciprocating motion under the action of an expansiondevice (9) fixed on the base (1) is arranged between the base (1) and the press cover (2). Therefore, the low-concentration sampling nozzle binding apparatus has the advantages of reasonable design, simple structure, quite practicality, convenience for operation, high working efficiency, uniform binding and high binding quality.

A prefabricated household wall composite wall, including a heat-insulating wall, the heat-insulating wall includes a first wall panel and a second wall panel, a keel frame is arranged between the first wall panel and the second wall panel, and the The keel frame includes a plurality of horizontal frames and vertical frames, the horizontal frames are clamped with the vertical frames, a base is provided under the heat insulation wall, and a mounting groove is provided on the base, and the first wallboard and the The second wallboard is arranged inside the installation groove. The first wall panel and the second wall panel are detachable structures, and the detachable dragon skeleton is used between the first wall panel and the second wall panel, which is convenient for transportation, transported to the construction site, and then spliced, which is more suitable for mountainous areas , transportation is also more convenient.

The invention relates to a high-power-supply-rejection-ratio LC-VCO (LC-Voltage Controlled Oscillator) device, which comprises a complementary cross-coupled LC-VCO and a linear voltage regulator. The output end Vout of the linear voltage regulator is connected with the common-mode end VCM of the LC resonant circuit of the complementary cross-coupled LC-VCO. Therefore, the high-power-supply-rejection-ratio LC-VCO device has the advantages that 1) the design is reasonable, the structure is simple and the device is fully practical; and 2) the power supply noise suppression capability of the output voltage of the linear voltage regulator can be adjusted through the circuit and the power supply sensitivity of the LC-VCO can be reduced.

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.

The invention relates to a particle cutter and especially relates to a double-channel bypass-type air particle cutter. The double-channel bypass-type air particle cutter is characterized by comprising a shunting chamber (2), and a primary shunting device and a secondary shunting device arranged in the shunting chamber (2). The double-channel bypass-type air particle cutter has the advantages that 1, a design is reasonable; a structure is simple; and practical applicability is good; and 2, under the conditions of the same air source and the same power, two types of particles having different sizes can be collected respectively or simultaneously; a cost is saved; and air quality measure accuracy is improved.