| 摘要 |
FIELD: mining; construction materials industry; other branches of industry; vibratory technique. ^ SUBSTANCE: the invention is pertaining to vibratory technique, is particular, to the devices for excitation of oscillations, and may be used in production of construction materials, in mining and other branches of industry, where vibrations are used. The technical result of the invention is simplification of the vibration exciter design. The vibration exciter contains a body with a working medium inlet channel, a striker movably mounted with formation of two chambers - a chamber of direct run connected by the inlet channel with the working medium source, and the chamber of reverse run, which is connected with the chamber of the direct run by a channel in the striker and with then aerosphere - by outlet channel in a branch pipe. The branch pipe one end is mounted on the body, and its other end is placed in the channel of the striker. The chamber of the direct run has a valve with a capability to interact with the outlet channel in the branch pipe or with the channel in the striker at its axial motions. In separate cases of production the striker is mounted at the expense one or two elastic diaphragms. ^ EFFECT: the invention ensures simplification of the vibration exciter design. ^ 3 cl, 2 dwg
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