Plugging device
View Patent ↗A plugging device includes a wrapping body, the wrapping body includes a flexible outer wall and a rigid body located inside the wrapping body, a filler is arranged in a remaining space, other than a space occupied by the rigid body, in the wrapping body; and the filler has fluidity. The plugging device can better cover, fill and plug special-shaped holes, and the deformed wrapping body will fill an inlet of a perforation hole and will not easily fall off without a pressure difference.
1 . A plugging device, comprising:
a wrapping body comprising a flexible outer wall, wherein the flexible outer wall surrounds a rigid body, and the flexible outer wall is more susceptible to deformation than the rigid body; and
a filler arranged in a remaining space, other than a space occupied by the rigid body, in the wrapping body, wherein the filler has fluidity and is configured to be displaceable inside the wrapping body to deform the wrapping body under external force.
2 . The plugging device according to claim 1 , wherein the plugging device comprises a plurality of rigid bodies.
3 . The plugging device according to claim 1 , wherein fluff is formed on the flexible outer wall of the wrapping body.
4 . The plugging device according to claim 3 , further comprising a shell; wherein the fluff and the wrapping body are arranged inside the shell, and the shell is configured to break when an external pressure is greater than 10 MPa.
5 . The plugging device according to claim 4 , wherein the shell is made of a plastic or polyglycolic acid material.
6 . The plugging device according to claim 3 , wherein the wrapping body, the fluff and the filler are made of soluble materials.
7 . The plugging device according to claim 1 , wherein a plurality of protrusions are formed on an surface of the wrapping body.
8 . The plugging device according to claim 1 , wherein a plurality of through holes are formed in the rigid body; and the plurality of through holes are in communication with each other.
9 . The plugging device according to claim 8 , wherein a coating is arranged on an inner wall of each of the plurality of through holes; and the coating has a property of swelling upon contact with water.