Dust sealing

1. A cone or gyratory crusher, comprising:

a slip ring;

a crusher head vertically adjustable for adjusting the setting of the crusher; and

a first sealing member positioned between the slip ring and the crusher head such that a first sliding surface of the first sealing member contacts the slip ring, wherein the first sealing member creates a closed first space between the slip ring and the crusher head that is located above the first sealing member; and

a first flexible member connected to the first sealing member and extending below the first sealing member, wherein the first flexible member creates a closed a second space between the first flexible member and the slip ring that is located below the first sealing member.

2. The crusher of claim 1 , wherein the first flexible member is attached to a second sealing member.

3. The crusher of claim 1 , wherein the first flexible member is attached to a holding member.

4. The crusher of claim 1 , wherein the crusher further comprises a second flexible member attached to the first sealing member and to a holding member and configured to prevent dust from entering into the gap between the first sealing member and the holding member.

5. The crusher of claim 1 , wherein the first flexible member comprises fibre glass, canvas, rubber or plastic or other dust tight material.

6. The crusher claim 2 , wherein the first flexible member or the second sealing member is configured to pull or push the first sealing member.

7. The crusher of claim 1 , wherein the first sealing member extends below a holding member.

8. The crusher of claim 2 , wherein the first sealing member or the second sealing member is configured not to rotate or slide with respect to the crusher head or the slip ring.

9. The crusher of claim 1 , wherein the first sealing member and the first flexible member form a single-piece element.

10. A mineral material processing plant comprising a cone or gyratory crusher according to claim 1 .

11. A mineral material processing plant according to claim 10 , wherein the mineral material processing plant comprises a mobile plant.

12. A sealing member configured to be arranged between a slip ring and a crusher head vertically adjustable for adjusting the setting of the crusher of a cone or a gyratory crusher, comprising:

a first sealing member positioned between the slip ring and the crusher head such that a first sliding surface of the first sealing member contacts the slip ring, wherein the first sealing member creates a closed first space between the slip ring and the crusher head that is located above the first sealing member; and

a first flexible member connected to the first sealing member and extending below the first sealing member, wherein the first flexible member creates a closed second space between the first flexible member and the slip ring that is located below the first sealing member.

13. A cone or gyratory crusher, comprising:

a slip ring;

a crusher head vertically adjustable relative to the slip ring; and

a first sealing member extending between the crusher head and the slip ring and having a first sliding surface configured to contact the slip ring to prevent dust from moving between the slip ring and the crusher head, wherein the first sealing member is attached to the crusher head by a holding member such that the first sealing member creates a closed first space above the first sealing member and between the slip ring and the crusher head; and

a first flexible member connected to the first sealing member and configured to prevent dust from moving between the first sliding surface of the slip ring and the crusher head, wherein the first flexible member creates a closed second space below the first sealing member and between the first flexible member and the slip ring.

14. The crusher of claim 2 , wherein the first flexible member is configured to flex when the first sealing member and the second sealing members are moved together or are moved further apart.