FIELD: mining.
SUBSTANCE: washing unit of a drilling bit comprises a body with a channel and a seat, in which a sealing element is placed, as well as an attachment fixed from axial displacement with a rod stop installed in combined grooves on the inner surface of the body seat and the outer surface of the attachment. In the groove on the outer surface of the attachment there is a composite ring, made of softer material compared to the attachment material, besides, the composite ring on the outer surface has a bore with the cross section in the form of a half-toroid, combined with the circular bore of the seat and forming jointly with it a channel for the rod stop.
EFFECT: increased reliability of attachment fixation.
2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| FLUSHING ASSEMBLY OF DRILLING BIT (VERSIONS) | 2016 |
|
RU2617745C1 |
| FLUSHING ASSEMBLY OF DRILLING BIT (VERSIONS) | 2016 |
|
RU2618726C1 |
| FLUSHING ASSEMBLY OF DRILLING BIT (VERSIONS) | 2016 |
|
RU2618707C1 |
| FLUSHING ASSEMBLY OF DRILLING BIT (VERSIONS) | 2016 |
|
RU2618717C1 |
| FLUSHING ASSEMBLY OF DRILLING BIT (VERSIONS) | 2016 |
|
RU2618734C1 |
| FLUSHING ASSEMBLY OF DRILLING UNIT (OPTIONS) | 2017 |
|
RU2663511C1 |
| FLUSHING ASSEMBLY OF THE DRILLING UNIT (OPTIONS) | 2017 |
|
RU2663520C1 |
| FLUSHING ASSEMBLY OF DRILLING UNIT (OPTIONS) | 2017 |
|
RU2663516C1 |
| FLUSHING ASSEMBLY OF THE DRILLING UNIT (OPTIONS) | 2017 |
|
RU2658961C1 |
| FLUSHING ASSEMBLY OF THE DRILLING UNIT (OPTIONS) | 2017 |
|
RU2658959C1 |
