42results about How to "Eliminate vibration noise" patented technology

The invention discloses an oscillation mechanism for a soil VOCs treatment instrument and the soil VOCs treatment instrument, and relates to an oscillation mechanism for oscillating a soil sample. Thepurpose of the invention is to provide an oscillation mechanism for a soil VOCs treatment instrument and a soil VOCs treatment instrument with simple structure and excellent oscillation effects. Theoscillation mechanism for the soil VOCs treatment instrument comprises sampling bottles, the oscillation mechanism is used for vibrating the sampling bottles, the oscillation mechanism is arranged inan acute-angle inclined manner relative to the ground, the sampling bottles can automatically flow to the next procedure after finishing oscillation in the oscillation mechanism, the oscillation mechanism comprises oscillation guide rails, the oscillation guide rails are arranged in the flow direction of the sampling bottles and are arranged in an acute-angle inclined manner relative to the ground, and a plurality of sampling bottles are sequentially arranged on the oscillation guide rails in the flow direction and are horizontally arranged relative to the oscillation guide rails. The soil VOCs treatment instrument also comprises a headspace mechanism, the headspace mechanism is used for carrying out the headspace to the sampling bottles, the headspace mechanism is arranged in parallel relative to the ground, and the sampling bottles can automatically flow from the oscillation mechanism to the headspace mechanism.

The invention discloses an indoor safety lock which comprises a fixed base and a baffle block, wherein the fixed base comprises a mounting plate and a hinged block; the hinged block and the mounting plate are integrally formed; a strip-shaped hole is formed in the hinged block; one side of the baffle block is provided with a rotary shaft; the rotary shaft is inserted into the strip-shaped hole and capable of rotating in the strip-shaped hole; an elastic part capable of horizontally supporting the rotary shaft is arranged in the strip-shaped hole; the inner side of the hinged block is provided with a clamping edge; and a clamping slot matched with the clamping edge is arranged on the baffle block. According to the scheme, during mounting, only the fixed base is required to be mounted on a door frame, and a fixing part is not required to be arranged on a door plate, so that damages to a door are relieved.

The invention discloses a method for manufacturing iron core laminations. After the iron core laminations of the same type are stacked into a stack of iron core laminations, they are connected and fixed at the excess portion beyond the finished iron core, and then wire cutting, laser cutting or other processing methods are used to Cutting forms the middle shape of the iron core, and then installs the inner pressure plate to compress the stack of scattered iron cores and then cuts the shape of the iron core. The accuracy of the cutting process is used to ensure the accuracy of the size and position of the iron core. . In the manufacturing method of the core laminations of the present invention, the tooling used is only a pressure plate with good parallelism and common fasteners, which requires less accuracy of the tooling, and can solve the problem of silicon steel sheet crystal cracking and partial insulating layer in the traditional lamination method. The problem of damage, loss and high heat generation can fully fill the gaps between the core pieces, strengthen the heat conduction of the core, and eliminate the fanning phenomenon of the core and the vibration noise of the core.

The invention relates to a fan module, which includes a fan and a noise reduction device arranged on the fan. The silencing device includes a first silencing component, the first silencing component is attached to one side of the fan, and an airflow channel corresponds to an air outlet of the fan, wherein the material of the first silencing component is a porous material for absorbing Wind cutting sound or vibration generated during operation to reduce the noise generated by the fan during operation.