Separator drum with piston slide valve and closing chamber

Abstract

The invention relates to a separator drum (10) with a hydraulically actuated, axially movable piston slide valve (20) which can seal off a solids space (14) from at least one solids outlet (18), wherein the piston slide valve (20) can be held in its closed position via a closing chamber (30) that can be filled with closing liquid, in particular closing water, wherein the closing chamber (30) is formed between an underside (21) of the piston slide valve (20) and a top side (35) of a drum lower part (15). According to the invention, the closing chamber (30) has a first closing chamber portion (31) near the rotation axis (R) and a second closing chamber portion (32) remote from the rotation axis (R), wherein the first closing chamber portion (31) is formed by two mutually parallel portions (22, 36) of the underside (21) of the piston slide valve (20) and of the top side (35) of the drum lower part (15), and the second closing chamber portion (32) has at least in part a conical cross section.

Claims

1. A separator drum (10) with a hydraulically actuated, axially movable piston slide valve (20) which can seal off a solids space (14) from at least one solids outlet (18), wherein the piston slide valve (20) can be held in its closed position via a closing chamber (30) that can be filled with closing liquid, wherein the closing chamber (30) is formed between an underside (21) of the piston slide valve (20) and a top side (35) of a drum lower part (15), characterized in that the closing chamber (30) has a first closing chamber portion (31) near the rotation axis (R) and a second closing chamber portion (32) remote from the rotation axis (R), wherein the first closing chamber portion (31) is formed by two mutually parallel portions (22, 36) of the underside (21) of the piston slide valve (20) and the top side (35) of the drum lower part (15), the second closing chamber portion (32) has at least in part a conical cross section, the second closing chamber portion (32) is formed by two portions (23; 37) of the underside (21) of the piston slide valve (20) and the top side (35) of the drum lower part (15), that are mutually arranged at an angle, and the two portions (23; 37) of the underside (21) of the piston slide valve (20) and the top side (35) of the drum lower part (15), that are mutually arranged at an angle, enclose an angle (α) of 10°-45°.

2. The separator drum (10) according to claim 1, characterized in that in the first closing chamber portion (31), a virtual diameter (D1) is formed, where a balance between the opening force by the drum filling and the closing force by the closing liquid situated within the closing chamber (30) is present.

3. The separator drum (10) according to claim 1, characterized in that in the first closing chamber portion (31), a virtual diameter (D1) is formed, where a balance between the opening force by the drum filling and the closing force by the closing liquid situated within the closing chamber (30) is present, and a flow off diameter (D4) of the first closing chamber portion (31) is larger than or equal to the virtual diameter (D1).

4. The separator drum (10) according to claim 1, characterized in that at least one drum valve (40) for discharging closing liquid, wherein between the first closing chamber portion (31) and the at least one drum valve (40), a first outflow channel (41), and between the second closing chamber portion (32) and the at least one drum valve (40), a second outflow channel (42) are formed, and an opening (43) of the second outflow channel (42) is formed in the area or in the proximity of the largest diameter of the closing chamber (30).

5. A separator drum (10) with a hydraulically actuated, axially movable piston slide valve (20) which can seal off a solids space (14) from at least one solids outlet (18), wherein the piston slide valve (20) can be held in its closed position via a closing chamber (30) that can be filled with closing liquid, wherein the closing chamber (30) is formed between an underside (21) of the piston slide valve (20) and a top side (35) of a drum lower part (15), characterized in that the closing chamber (30) has a first closing chamber portion (31) near the rotation axis (R) and a second closing chamber portion (32) remote from the rotation axis (R), wherein the first closing chamber portion (31) is formed by two mutually parallel portions (22, 36) of the underside (21) of the piston slide valve (20) and the top side (35) of the drum lower part (15), the second closing chamber portion (32) has at least in part a conical cross section, characterized in that the ratio of the closing liquid volume in the first closing chamber portion (31) to the closing liquid volume in the second closing chamber portion (32) is from 1:5 to 1:15.

6. The separator drum (10) according to claim 5, characterized in that in the first closing chamber portion (31), a virtual diameter (D1) is formed, where a balance between the opening force by the drum filling and the closing force by the closing liquid situated within the closing chamber (30) is present.

7. The separator drum (10) according to claim 5, characterized in that in the first closing chamber portion (31), a virtual diameter (D1) is formed, where a balance between the opening force by the drum filling and the closing force by the closing liquid situated within the closing chamber (30) is present, and a flow off diameter (D4) of the first closing chamber portion (31) is larger than or equal to the virtual diameter (D1).

8. The separator drum (10) according to claim 5, characterized in that at least one drum valve (40) for discharging closing liquid, wherein between the first closing chamber portion (31) and the at least one drum valve (40), a first outflow channel (41), and between the second closing chamber portion (32) and the at least one drum valve (40), a second outflow channel (42) are formed, and an opening (43) of the second outflow channel (42) is formed in the area or in the proximity of the largest diameter of the closing chamber (30).

9. A separator drum (10) with a hydraulically actuated, axially movable piston slide valve (20) which can seal off a solids space (14) from at least one solids outlet (18), wherein the piston slide valve (20) can be held in its closed position via a closing chamber (30) that can be filled with closing liquid, wherein the closing chamber (30) is formed between an underside (21) of the piston slide valve (20) and a top side (35) of a drum lower part (15), characterized in that the closing chamber (30) has a first closing chamber portion (31) near the rotation axis (R) and a second closing chamber portion (32) remote from the rotation axis (R), wherein the first closing chamber portion (31) is formed by two mutually parallel portions (22, 36) of the underside (21) of the piston slide valve (20) and the top side (35) of the drum lower part (15), the second closing chamber portion (32) has at least in part a conical cross section, at least one drum valve (40) for discharging closing liquid, wherein between the first closing chamber portion (31) and the at least one drum valve (40), a first outflow channel (41), and between the second closing chamber portion (32) and the at least one drum valve (40), a second outflow channel (42) are formed, and the inner diameter (D3) of the first outflow channel (41) is larger than the inner diameter (D2) of the second outflow channel (42).

10. The separator drum (10) according to claim 9, characterized in that in the first closing chamber portion (31), a virtual diameter (D1) is formed, where a balance between the opening force by the drum filling and the closing force by the closing liquid situated within the closing chamber (30) is present.

11. The separator drum (10) according to claim 9, characterized in that in the first closing chamber portion (31), a virtual diameter (D1) is formed, where a balance between the opening force by the drum filling and the closing force by the closing liquid situated within the closing chamber (30) is present, and a flow off diameter (D4) of the first closing chamber portion (31) is larger than or equal to the virtual diameter (D1).

12. The separator drum (10) according to claim 9, characterized in that an opening (43) of the second outflow channel (42) is formed in the area or in the proximity of the largest diameter of the closing chamber (30).

13. A separator drum (10) with a hydraulically actuated, axially movable piston slide valve (20) which can seal off a solids space (14) from at least one solids outlet (18), wherein the piston slide valve (20) can be held in its closed position via a closing chamber (30) that can be filled with closing liquid, wherein the closing chamber (30) is formed between an underside (21) of the piston slide valve (20) and a top side (35) of a drum lower part (15), characterized in that the closing chamber (30) has a first closing chamber portion (31) near the rotation axis (R) and a second closing chamber portion (32) remote from the rotation axis (R), wherein the first closing chamber portion (31) is formed by two mutually parallel portions (22, 36) of the underside (21) of the piston slide valve (20) and the top side (35) of the drum lower part (15), the second closing chamber portion (32) has at least in part a conical cross section, at least one drum valve (40) for discharging closing liquid, wherein between the first closing chamber portion (31) and the at least one drum valve (40), a first outflow channel (41), and between the second closing chamber portion (32) and the at least one drum valve (40), a second outflow channel (42) are formed, and a nozzle (44) is formed in the second outflow channel (42).

14. The separator drum (10) according to claim 13, characterized in that in the first closing chamber portion (31), a virtual diameter (D1) is formed, where a balance between the opening force by the drum filling and the closing force by the closing liquid situated within the closing chamber (30) is present.

15. The separator drum (10) according to claim 13, characterized in that in the first closing chamber portion (31), a virtual diameter (D1) is formed, where a balance between the opening force by the drum filling and the closing force by the closing liquid situated within the closing chamber (30) is present, and a flow off diameter (D4) of the first closing chamber portion (31) is larger than or equal to the virtual diameter (D1).

16. The separator drum (10) according to claim 13, characterized in that an opening (43) of the second outflow channel (42) is formed in the area or in the proximity of the largest diameter of the closing chamber (30).

17. A separator drum (10) with a hydraulically actuated, axially movable piston slide valve (20) which can seal off a solids space (14) from at least one solids outlet (18), wherein the piston slide valve (20) can be held in its closed position via a closing chamber (30) that can be filled with closing liquid, wherein the closing chamber (30) is formed between an underside (21) of the piston slide valve (20) and a top side (35) of a drum lower part (15), characterized in that the closing chamber (30) has a first closing chamber portion (31) near the rotation axis (R) and a second closing chamber portion (32) remote from the rotation axis (R), wherein the first closing chamber portion (31) is formed by two mutually parallel portions (22, 36) of the underside (21) of the piston slide valve (20) and the top side (35) of the drum lower part (15), the second closing chamber portion (32) has at least in part a conical cross section, at least one drum valve (40) for discharging closing liquid, wherein between the first closing chamber portion (31) and the at least one drum valve (40), a first outflow channel (41), and between the second closing chamber portion (32) and the at least one drum valve (40), a second outflow channel (42) are formed, and the second outflow channel (42) has an inner diameter (D2) of 0.5 mm to 5.0 mm.

18. The separator drum (10) according to claim 17, characterized in that in the first closing chamber portion (31), a virtual diameter (D1) is formed, where a balance between the opening force by the drum filling and the closing force by the closing liquid situated within the closing chamber (30) is present.

19. The separator drum (10) according to claim 17, characterized in that in the first closing chamber portion (31), a virtual diameter (D1) is formed, where a balance between the opening force by the drum filling and the closing force by the closing liquid situated within the closing chamber (30) is present, and a flow off diameter (D4) of the first closing chamber portion (31) is larger than or equal to the virtual diameter (D1).

20. The separator drum (10) according to claim 17, characterized in that an opening (43) of the second outflow channel (42) is formed in the area or in the proximity of the largest diameter of the closing chamber (30).

21. A separator drum (10) with a hydraulically actuated, axially movable piston slide valve (20) which can seal off a solids space (14) from at least one solids outlet (18), wherein the piston slide valve (20) can be held in its closed position via a closing chamber (30) that can be filled with closing liquid, wherein the closing chamber (30) is formed between an underside (21) of the piston slide valve (20) and a top side (35) of a drum lower part (15), characterized in that the closing chamber (30) has a first closing chamber portion (31) near the rotation axis (R) and a second closing chamber portion (32) remote from the rotation axis (R), wherein the first closing chamber portion (31) is formed by two mutually parallel portions (22, 36) of the underside (21) of the piston slide valve (20) and the top side (35) of the drum lower part (15), the second closing chamber portion (32) has at least in part a conical cross section, at least one drum valve (40) for discharging closing liquid, wherein between the first closing chamber portion (31) and the at least one drum valve (40), a first outflow channel (41), and between the second closing chamber portion (32) and the at least one drum valve (40), a second outflow channel (42) are formed, and the first outflow channel (41) has an inner diameter (D3) of 2.0 mm to 20.0 mm.

22. The separator drum (10) according to claim 21, characterized in that in the first closing chamber portion (31), a virtual diameter (D1) is formed, where a balance between the opening force by the drum filling and the closing force by the closing liquid situated within the closing chamber (30) is present.

23. The separator drum (10) according to claim 21, characterized in that in the first closing chamber portion (31), a virtual diameter (D1) is formed, where a balance between the opening force by the drum filling and the closing force by the closing liquid situated within the closing chamber (30) is present, and a flow off diameter (D4) of the first closing chamber portion (31) is larger than or equal to the virtual diameter (D1).

24. The separator drum (10) according to claim 21, characterized in that an opening (43) of the second outflow channel (42) is formed in the area or in the proximity of the largest diameter of the closing chamber (30).

25. A separator drum (10) with a hydraulically actuated, axially movable piston slide valve (20) which can seal off a solids space (14) from at least one solids outlet (18), wherein the piston slide valve (20) can be held in its closed position via a closing chamber (30) that can be filled with closing liquid, wherein the closing chamber (30) is formed between an underside (21) of the piston slide valve (20) and a top side (35) of a drum lower part (15), characterized in that the closing chamber (30) has a first closing chamber portion (31) near the rotation axis (R) and a second closing chamber portion (32) remote from the rotation axis (R), wherein the first closing chamber portion (31) is formed by two mutually parallel portions (22, 36) of the underside (21) of the piston slide valve (20) and the top side (35) of the drum lower part (15), the second closing chamber portion (32) has at least in part a conical cross section, at least one drum valve (40) for discharging closing liquid, wherein between the first closing chamber portion (31) and the at least one drum valve (40), a first outflow channel (41), and between the second closing chamber portion (32) and the at least one drum valve (40), a second outflow channel (42) are formed, and the ratio of the inner diameter (D3) of the first outflow channel (41) to the inner diameter (D2) of the second outflow channel (42) is from 1:3 to 1:15.

26. The separator drum (10) according to claim 25, characterized in that in the first closing chamber portion (31), a virtual diameter (D1) is formed, where a balance between the opening force by the drum filling and the closing force by the closing liquid situated within the closing chamber (30) is present.

27. The separator drum (10) according to claim 25, characterized in that in the first closing chamber portion (31), a virtual diameter (D1) is formed, where a balance between the opening force by the drum filling and the closing force by the closing liquid situated within the closing chamber (30) is present, and a flow off diameter (D4) of the first closing chamber portion (31) is larger than or equal to the virtual diameter (D1).

28. The separator drum (10) according to claim 25, characterized in that an opening (43) of the second outflow channel (42) is formed in the area or in the proximity of the largest diameter of the closing chamber (30).

Description

(1) Hereinafter, the invention will be explained in more detail on the basis of exemplary embodiments with reference to the enclosed schematic drawings.

(2) Shown are in:

(3) FIG. 1 a cross section of a separator drum according to the invention;

(4) FIG. 2 an enlarged representation of the area around the closing chamber according to a first exemplary embodiment of the invention; and

(5) FIG. 3 an enlarged representation of the area around the closing chamber according to a second exemplary embodiment of the invention.

(6) In the following, the same reference numerals will be used for identical parts or parts of identical action.

(7) A separator drum 10 is illustrated. It has a central inlet 11 for a mixture of solids and liquid to be separated, via which the mixture of solids and liquid reaches a centrifuge space 12. The centrifuge space 12 is composed of a separating space 13 and a solids space 14. The solids space 14 is formed as a double cone and delimited by a piston slide valve 20 in its lower area.

(8) In its upper area, the separator drum 10 is closed by a drum cover 16 which is connected to a drum lower part 15 by a closure ring 17. The piston slide valve 20 may close or release an outlet 18 provided in the drum lower part 15. In FIG. 1, the piston slide valve 20 is illustrated in an opened position. The outlet 18 is released. If the piston slide valve 20 is axially pushed upward within the centrifuge space 12, the outlet 18 can be closed.

(9) The piston slide valve 20 can be hydraulically actuated. For this purpose, a closing chamber 20 is formed which can be filled with a closing liquid, in particular closing water. Due to the level formed within the closing chamber 30, the piston slide valve 20 can be actuated. The closing chamber 30 is formed between the underside 21 of the piston slide valve 20 and the top side 35 of the drum lower part 15.

(10) Since the piston slide valve 20 rests in FIG. 1 upon the top side 35 of the drum lower part 15, the complete closing chamber 30 cannot be recognized.

(11) The closing chamber 30 has a first closing chamber portion 31 near the rotation axis R and a second closing chamber portion 32 remote from the rotation axis R. The first closing chamber portion 31 is formed by two mutually parallel portions (22, 36) of the underside 21 of the piston slide valve 20 and the top side 35 of the drum lower part 15. In other words, the portion 22 of the piston slide valve 20 or the portion 22 of the underside 21 of the piston slide valve 20 is formed to be parallel to the portion 36 of the drum lower part 15 or the portion 36 of the top side 35 of the drum lower part 15. The distance between the portions 22 and 36 thus remains the same when the piston slide valve 20 is pushed upward. Accordingly, a substantially hollow circle-cylindrical first closing chamber portion 31 is formed between the portions 22 and 36.

(12) The second closing chamber portion 32 has at least in part a conical cross section. This conical cross section can be recognized in FIG. 1 in which the piston slide valve 20 is in an opening position. This conical cross section remains maintained even at a closing position of the piston slide valve 20. The conical cross section is formed such that the dimension of the cross section decreases toward the first closing chamber portion 31. The second closing chamber portion 32 is adjacent to the first closing chamber portion 31.

(13) The second closing chamber portion 32 furthermore has an outer portion 33 with a horizontal terminal surface 34.

(14) The second closing chamber portion 32 is formed by two portions mutually arranged at an angle. The second closing chamber portion 32 is in particular built by the portion 23 of the underside 21 of the piston slide valve 20 and the portion 37 of the top side 35 of the drum lower part 15.

(15) The two portions 23 and 37 of the underside 21 of the piston slide valve 20 and the top side 35 of the drum lower part 15, that are mutually arranged at an angle, enclose an angle α of in particular 20° (see FIG. 2).

(16) In FIG. 2, the closing chamber 30 and an associated drum valve 40 according to a first exemplary embodiment are illustrated in an enlarged manner. In FIG. 2, the piston slide valve 20 is illustrated in a slightly lifted position. This allows to recognize that the closing chamber 30 is in particular built of the two closing chamber portions 31 and 32. Between a substantially vertical portion 24 of the piston slide valve 20 and a vertical portion 38 of the drum lower part 15, a slit-like portion 39 of the closing chamber 30 is formed.

(17) The so-called virtual diameter D1 is sketched in FIG. 2. During normal operation, there is a balance in mathematical terms at this virtual diameter D1 between the opening force generated by the drum filling and the closing force generated by the closing liquid present within the closing chamber 30. It can be recognized that the separator drum 10, in particular the closing chamber 30, is formed such that the virtual diameter D1 is formed in the area of the first closing chamber portion 31. In particular, the virtual diameter D1 is formed to be approximately centered in the first closing chamber portion 31.

(18) In general, the principle applies that the separator drum 10 is closed if the closing liquid level is less than D1. If the closing liquid level is more than D1, the separator drum 10 is opened. The closing liquid proportion that is less than the diameter D1, thus is relatively small. Since the second closing chamber portion 32 has a relatively large volume due to the conical cross section, the closing liquid proportion that is more than the diameter D1 is relatively large.

(19) Also, a drum valve 40 of the separator drum 10 can be recognized in FIG. 2. Between the first closing chamber portion 31 and the drum valve 40, a first outflow channel 41 is formed. Whereas between the second closing chamber portion 32 and the drum valve 40, a second outflow channel 42 is formed. The second outflow channel 42 is substantially formed to be perpendicular to the first outflow channel 41.

(20) It can be recognized that the inner diameter D3 of the first outflow channel 41 is larger than the inner diameter D2 of the second outflow channel 42. The second outflow channel 42 has in particular an inner diameter D2 of 1.5 mm. The opening 43 of the second outflow channel 42 is formed in the area of the largest diameter of the closing chamber 30. The opening 43 is in particular formed in the horizontal terminal surface 34.

(21) It can moreover be recognized that the diameter D4, i.e. the discharge diameter of the first closing chamber portion 31 is larger than the virtual diameter D1.

(22) The formation of the separator drum 10, in particular the piston slide valve 20 and the closing chamber 30 according to the invention results in the following advantages:

(23) The relative low amount of closing liquid in the first closing chamber portion 31 may be carried directly to the drum valve 40 via the first outflow channel 41 which has a relatively large inner diameter D3. Via this drum valve 40, this proportion of the closing liquid may be discharged very quickly from the separator drum 10. Due to that, the piston slide valve 20 is moved downward very quickly.

(24) The relatively large amount of closing liquid in the second closing chamber portion 32 is carried simultaneously via the second outflow channel 42. This second outflow channel 42, however, has a relatively small inner diameter D2. Due to that, the flow off of the closing water flowing in is delayed such that the opened drum valve 40 can be closed again already before the closing liquid is discharged completely.

(25) For delaying the flow off of the closing liquid proportion from the second closing chamber portion 32, a nozzle 44 is moreover formed in the second outflow channel 42.

(26) The closing liquid permanently topped up from outside during a partial emptying process, simultaneously tops up the discharged closing liquid again.

(27) The piston slide valve 20 situated in the lowermost position during the emptying operation may thus be pressed again upward after a relatively short time so as to subsequently close the separator drum 10 or the outlet 18 again.

(28) Due to that, the switching times of the drum valve 40 are significantly shortened.

(29) As indicated in FIG. 2, the drum valve 40 is in known manner in operative connection with an opening liquid system. For this purpose, an opening liquid channel 45 is formed.

(30) In FIG. 3, the closing chamber 30 and an associated drum valve 40 according to a second exemplary embodiment are illustrated in an enlarged manner. In FIG. 3, the piston slide valve 20 is illustrated in a slightly lifted position. In this case, it can be seen that the closing chamber 30 is in particular built of the two closing chamber portions 31 and 32.

(31) First, the exemplary embodiment of FIG. 3 differs from the exemplary embodiment according to FIG. 2 in that the diameter D4, i.e. the flow off diameter of the first closing chamber portion 31 is (approximately) identical to the virtual diameter D1.

(32) In this context, the first outflow channel 41 has two portions, namely a first, vertical portion, and a second, oblique portion. In this case, the first, vertical portion begins in an opening of the top side 35 of the drum lower part 15 and ends in the second, oblique portion. The second, oblique portion in turn ends in the drum valve 40.

(33) It is moreover illustrated in FIG. 3 that the first outflow channel 41 and the second outflow channel 42 extend mutually obliquely, i.e. not mutually perpendicular.

LIST OF REFERENCE NUMERALS

(34) 10 separator drum 11 central inlet 12 centrifuge space 13 separating space 14 solids space 15 drum lower part 16 drum cover 17 closure ring 18 (solids) outlet 20 piston slide valve 21 underside of piston slide valve 22 portion of piston slide valve 23 portion of piston slide valve 24 vertical portion 30 closing chamber 31 first closing chamber portion 32 second closing chamber portion 33 outer portion 34 horizontal terminal surface 35 top side of drum lower part 36 portion of drum lower part 37 portion of drum lower part 38 vertical portion 39 slit-like portion 40 drum valve 41 first outflow channel 42 second outflow channel 43 opening of second outflow channel 44 nozzle 45 opening liquid channel D1 virtual diameter D2 inner diameter of second outflow channel D3 inner diameter of first outflow channel D4 flow off diameter of first closing chamber portion α angle of second closing chamber portion