FIELD: rock cutting tools, particularly flushing units thereof.
SUBSTANCE: flushing unit comprises body with channel and socket provided with annular bore, nozzle with sealing member installed in the socket and retaining split ring arranged in the annular bore and having fixer. The nozzle is of stepped shape. The body is provided with additional annular bore located below the nozzle. Fixer is made as collet bush having upper part installed between inner surface of retaining ring and outer nozzle surface having lesser diameter. Lower part of collet bush is arranged in additional annular bore of the body. Bush is provided with cuts formed in lower part thereof. In accordance with another embodiment annular bore for collet bush receiving is created in outer surface of nozzle stage having lesser diameter.
EFFECT: facilitation of flushing unit mounting and demounting.
6 cl, 6 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| FLUSHING ASSEMBLY OF DRILLING BIT (VERSIONS) | 2016 |
|
RU2617745C1 |
| FLUSHING ASSEMBLY OF DRILLING BIT (VERSIONS) | 2016 |
|
RU2618707C1 |
| FLUSHING ASSEMBLY OF DRILLING BIT (VERSIONS) | 2016 |
|
RU2618726C1 |
| FLUSHING ASSEMBLY OF DRILLING BIT (VERSIONS) | 2016 |
|
RU2618717C1 |
| FLUSHING ASSEMBLY OF DRILLING UNIT (OPTIONS) | 2017 |
|
RU2663516C1 |
| FLUSHING ASSEMBLY OF DRILLING UNIT (OPTIONS) | 2017 |
|
RU2663511C1 |
| FLUSHING ASSEMBLY OF THE DRILLING UNIT (OPTIONS) | 2017 |
|
RU2663520C1 |
| FLUSHING ASSEMBLY OF DRILLING BIT (VERSIONS) | 2016 |
|
RU2618734C1 |
| FLUSHING ASSEMBLY OF THE DRILLING UNIT (OPTIONS) | 2017 |
|
RU2658959C1 |
| FLUSHING ASSEMBLY OF THE DRILLING UNIT (OPTIONS) | 2017 |
|
RU2658960C1 |
