65results about How to "To achieve the effect of silence" patented technology

The invention discloses a temperature control system for an electronic element, which comprises: an evaporator, an expansion valve to transmit liquid refrigerant for said evaporator, a temperature controller, and a console to monitor the temperature of heat part. This invention can achieve silencing effect easily in room; can be used on computer to make cabinet much thin for a little space as well as sealing to reduce electromagnetic radiation on maximum limit. This invention also provides an adaptive and distributed temperature control method.

A wireless mute energy saving mouse comprises buttons and infrared baffles which are connected with the buttons, wherein the infrared baffles can block and release a infrared signal by pressing the buttons, infrared double tubes are used for sending and receiving infrared lights and generating switching signals under the action of the blocking and releasing by the infrared baffles; mouse signals are processed and coded by a single chip module, and then are sent to a wireless receiving terminal through a wireless module, and the wireless receiving terminal is connected with a universal serial bus (USB) of a computer to control motions of a screen arrow; a normally closed inching relaying switch is loaded at the position of a power input of a circuit module, when the mouse is idle for a long time or a power switch does not shut down, the normally closed inching relaying switch is off, and the single chip module is in a sleep state. According to the wireless mute energy saving mouse, the problems that the key sound of former wireless mice is noisy and batteries of the former wireless mice are replaced frequently and the like are effectively solved, and the style of an entity imitates that of a dolphin, thereby the wireless mute energy saving mouse is attractive and lovely and also very humanized.

The invention belongs to the technical field of municipal engineering well lids, and particularly relates to a municipal mute anti-theft well lid. The municipal mute anti-theft well lid comprises a well wall, an adjusting and position-clamping mechanism and a balance adjusting mechanism; and the balance adjusting mechanism is installed on a boss of the inner circle face of the well wall, and the adjusting and position-clamping mechanism is installed on the upper side of the balance adjusting mechanism. According to the well lid, the anti-theft function, the well lid height adjustment functionand the well lid balance adjustment function are achieved; clamping strips extending out of an adjusting shell adjusting groove can be inserted into an adjusting groove in the well wall, so that the function of limiting the up-and-down movement and the rotary movement of an adjusting shell and a top lid is achieved, and the beneficial effect that the well lid is prevented from being easily liftedis achieved; and the purpose of adjusting stretching and retracting of a clamping block is achieved by rotating an adjusting shaft through an auxiliary tool which is inserted into an adjusting shaft lock hole.

The invention belongs to the technical field of municipal engineering well lids, and particularly relates to a municipal engineering anti-theft well lid. The municipal engineering anti-theft well lidcomprises a well wall, an adjusting and position-clamping mechanism and a balance adjusting mechanism; and the balance adjusting mechanism is installed on a boss of the inner circle face of the well wall, and the adjusting and position-clamping mechanism is installed on the upper side of the balance adjusting mechanism. According to the well lid, the anti-theft function, the well lid height adjustment function and the well lid balance adjustment function are achieved; clamping strips extending out of an adjusting shell adjusting groove can be inserted into an adjusting groove in the well wall,so that the function of limiting the up-and-down movement and the rotary movement of an adjusting shell and a top lid is achieved, and the beneficial effect that the well lid is prevented from beingeasily lifted is achieved; and the purpose of adjusting stretching and retracting of a clamping block is achieved by rotating an adjusting shaft through an auxiliary tool which is inserted into an adjusting shaft lock hole.

The invention belongs to the technical field of municipal engineering manhole covers, and particularly relates to an anti-theft manhole cover used in municipal engineering. The manhole cover comprisesa well wall, an adjustment clamping position mechanism and a balance adjustment mechanism, wherein the balance adjustment mechanism is installed on a boss of the inner round surface of the well wall,and the adjustment clamping position mechanism is installed on the upper side of the balance adjustment mechanism; and functions of prevention of thievery, height adjustment of the manhole cover, andbalance adjustment of the manhole cover are achieved. Clamping strips extending out of adjusting grooves of an adjusting shell can be inserted into adjusting grooves on the well wall to play the roleof defining the up and down movement and the rotating movement of the adjusting shell and a top cover, and the manhole cover can be prevented from being prone to being lifted. The purpose of adjusting the expansion and contraction of a clamping block is achieved by inserting an auxiliary tool into a lock hole of an adjustment shaft to rotate the adjustment shaft.

The invention discloses a humidifier atomization device. The humidifier atomization device comprises a floater and an atomizer. The atomizer is connected with a timer. The floater is of a circularly annular structure and comprises a floater seat and an upper cover. Mutually corresponding annular grooves are formed in the floater seat and the upper cover correspondingly. When the upper cover is installed on the floater seat in a covering mode, the annular grooves are closed to form a sealed cavity. A holding bin is arranged in the middle of the floater seat. The atomizer is arranged in the holding bin. The bottom of the holding bin extends downwards until extending under the water surface and is provided with a water inlet. The atomizer is arranged in the holding bin and just immersed under the water surface. A small distance is always kept between the atomizer and the water surface through the floater, thus atomized water vapor generated by the atomizer can be discharged into air directly or by passing only a small distance, sound of the water vapor rolling on the water surface is reduced, so that the muting effect is achieved. In addition, the atomized water vapor makes little contact with water, dissolving of the water vapor is reduced, the discharge quantity of the atomized water vapor is increased, and thus the work efficiency of a humidifier is improved.

The invention belongs to the technical field of municipal engineering manhole covers, and particularly relates to a manhole cover used in municipal engineering. The manhole cover comprises a well wall, an adjustment clamping position mechanism and a balance adjustment mechanism, wherein the balance adjustment mechanism is installed on a boss of the inner round surface of the well wall, and the adjustment clamping position mechanism is installed on the upper side of the balance adjustment mechanism; and functions of prevention of thievery, height adjustment of the manhole cover, and balance adjustment of the manhole cover are achieved. Clamping strips extending out of adjusting grooves of an adjusting shell can be inserted into adjusting grooves on the well wall to play the role of definingthe up and down movement and the rotating movement of the adjusting shell and a top cover, and the manhole cover can be prevented from being prone to being lifted. The purpose of adjusting the expansion and contraction of a clamping block is achieved by inserting an auxiliary tool into a lock hole of an adjustment shaft to rotate the adjustment shaft.

The invention relates to an electric cutting tool, and provides a mute dust-free electric saw. The mute dust-free electric saw comprises a machine base system, a cutting system, a lifting system, an angle control system, a mute cover system, a power supply and a control system, wherein the lifting system is provided with a lifting motor for driving a lifting sliding block to lifted in a balanced mode to realize adjustment of different cutting depths, the angle control system controls the angle of a saw blade to realize the adjustment of different inclination angles, the machine base system andthe mute cover system form a relatively closed sound insulation box body, the friction sound generated by the cutting saw blade a the workpiece is sealed in the sound insulation box, so that the effect of silencing during cutting is achieved, and dust can be prevented from diffusing; and a dust collecting fan is arranged below the machine base system and the cover box which are sealed, cutting dust is collected, and the dust-free effect is achieved. According to the mute dust-free electric saw, the noise and dust pollution of a working place are reduced, the energy is saved, the environment is protected, outstanding substantive features and remarkable progress are achieved, and relatively high economic and social benefits can be generated.

The invention discloses a manual translation curtain structure, comprising fixing plates and fixing slide rails. The manual translation curtain structure is characterized in that each fixing slide rail is arranged in parallel from outside to inside; and each fixing slide rail is provided with a short slide rail; a back stopper is positioned on the back part at the inner side of the outer short slide rail; the outer side of the other adjacent short slide rail corresponding to the inside is provided with a front stopper and a back stopper; and the front stopper and the back stopper at the outer side of the inner adjacent short slide rail are fitted with the back stopper at the inner side of the outer short slide rail, so that the indoor light can be improved, the use is convenient, and the muted effect is good.

The invention discloses a wear-resistant and silent dual-rotor high-speed motor. The sound insulation board is composed of two components, A and B, in the ratio of A: B = 2:1. A and B contain the following components in parts by mass: A component Include the following components in terms of parts by mass: nano-silica powder: 11-19 parts, nano-zinc oxide: 9-12 parts, dimethylacetamide: 7-10 parts, methyl acetate: 3-8 parts , chloroprene rubber: 10-14 parts, tetraethyl orthosilicate: 8-12 parts, amino resin: 6-9 parts, auxiliary materials: 30-33 parts; the second component includes the following components by mass parts: Base emulsion: 17‑20 parts, antifreeze agent: 4‑8 parts, filler: 12‑19 parts, plasticizing resin: 3‑9 parts, vapor phase corrosion inhibitor: 1‑4 parts, curing agent: 20‑24 parts parts, defoamer: 19-22 parts, film-forming aids: 23-27 parts, the present invention not only improves work efficiency, but also reduces production cost and scrap rate, saves time and effort, high efficiency and energy saving, simple steps and convenient operation .

A self-driven seawater desalination device and method, relating to the field of seawater desalination and energy saving and emission reduction, the inlet section of the Venturi tube of the seawater desalination device is connected to the evaporator; the diffusion section of the Venturi tube is connected to the condenser through a pipeline; the inside of the evaporator A porous core is provided, and the porous core divides the inner cavity of the evaporator into an isolated seawater cavity and a steam cavity; a seawater channel is opened at the axis of the porous core; one end of the seawater channel communicates with the seawater cavity, and the seawater cavity communicates with the water inlet The other end of the seawater channel communicates with the water outlet through the pipeline; the head space of the seawater chamber is provided with a non-condensable air pipe, and the non-condensable air pipe communicates with the throat of the Venturi tube; when the seawater desalination device is running, the air pressure in the throat is less than The air pressure in the headspace of the seawater chamber; the hydraulic pressure in the seawater chamber is greater than the hydraulic pressure at the water outlet, and smaller than the hydraulic pressure at the water inlet. The invention does not need a supplementary water pump, a brine pump and a vacuum pump, realizes long-term operation without any pumping equipment, and achieves the purpose of seawater desalination.